WO2021217376A1 - Communication method, apparatus and system - Google Patents

Abstract

Embodiments of the present application relate to the technical field of communications, and provided therein are a communication method, apparatus and system, for reducing power consumption of a terminal when transmitting data on a direct communication interface. The solution comprises: a terminal receives resource information from an access network device, the resource information being used to represent resources of a direct communication interface; and the terminal transmits data by means of the resources of the direct communication interface, and the terminal is in a radio resource control (RRC)-inactive state. In the method provided in the embodiments of the present application, when a terminal is in an RRC-inactive state, data can still be transmitted by using resources of a direct communication interface from an access network device. Therefore, power consumption of a terminal when transmitting data on a direct communication interface can be reduced. In addition, said solution may be applied to a direct communication scenario.

Description

Communication method, device and system Technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method, device, and system.

Background technique

Vehicle to everything (V2X) technology in the 3rd generation partnership project (3rd generation partnership project, 3GPP) SA2 version (Release, R) 14 and R15 in the long term evolution (long term evolution, LTE) Projects have been established in the system and the new radio (NR) system.

In V2X communication, terminal A can use the PC5 interface between terminal A and terminal B to send data to terminal B on the sidelink resource.

In V2X communication, for terminal A in the radio resource control (radio resource control, RRC)-active state (for example, idle state), the base station can use the network scheduling operation mode (network scheduled operation mode) to configure the side chain for terminal A Road resources. For the terminal A in the RRC-inactive state (for example, the idle state), the side link resource can be determined through the terminal autonomous resource selection mode (UE autonomous resources selection mode). Among them, the network scheduling operation mode may refer to that the base station uses dynamic scheduling or semi-persistent scheduling to configure side link resources for the terminal. The autonomous resource selection mode of the terminal may refer to that the terminal selects the side link resources in the resource pool by means of resource frame sensing.

However, since the terminal adopts the terminal autonomous resource selection mode to determine the side link resources, sensing is required, and when the terminal uses the network scheduling operation mode, frame listening is not required. Therefore, the terminal adopts the terminal autonomous resource selection mode to determine the side link resources. The power consumption of the resource is higher than that of the terminal using the network scheduling operation mode to determine the power consumption of the side link resource. Therefore, the power consumption of the terminal in the RRC-inactive state to send side link data using the side link resource is higher than that of the terminal in the RRC state. -The power consumption of the terminal in the active state to use the side-link resource to send the side-link data.

Based on this, how to reduce the power consumption of the terminal using the side-link resource to send the side-link data is a technical problem that needs to be solved urgently.

Summary of the invention

The embodiments of the present application provide a communication method, device, and system to reduce the power consumption of a terminal to transmit data on a directly connected communication interface.

In order to achieve the foregoing objectives, the embodiments of the present application provide the following technical solutions:

In the first aspect, an embodiment of the present application provides a communication method, including: a terminal receives resource information from an access network device, the resource information is used to characterize a direct communication interface resource; the terminal transmits data through the direct communication interface resource, where , The terminal is in a radio resource control RRC-inactive state (RRC-inactive), or the terminal is in an RRC-active state, and the terminal adopts a power saving mode. In this method, the terminal receives the resource information from the access network device. Since the resource information is used to characterize the resources of the direct communication interface, then when the terminal is in the radio resource control RRC-inactive state, or when the terminal is in the RRC-active state , And when the terminal adopts the power saving mode, it can transmit data on the direct connection communication interface resource. In this way, for the terminal in the RRC-inactive state, it is possible to avoid the power consumption caused by the terminal adopting the terminal independent selection resource mode to obtain the direct connection communication interface resource in order to transmit data. For the terminal in the RRC-active state and adopts the power-saving mode, the power consumption generated when it transmits data on the direct communication interface resources can still be lower than the power generated by the terminal in the RRC-active state that does not adopt the power-saving mode. Consumption. Therefore, the method provided by the embodiment of the present application can reduce the power consumption of the terminal transmitting data on the direct communication interface.

Among them, the direct communication interface refers to a communication interface between two terminals that does not transit through the base station but communicates. Direct communication interface communication includes data transmission, for example, the transmission of signaling and service data. The direct communication interface can also be referred to as a PC5 interface.

In a possible implementation of the first aspect, the resource information is obtained from the access network device when the terminal is in the RRC-activated state.

In a possible implementation of the first aspect, the direct communication interface resource is a direct communication interface resource based on a network scheduling mode.

In a possible implementation of the first aspect, before the terminal transmits data through the direct communication interface resource, the method provided in the embodiment of the present application may further include: the terminal determines that the network side (for example, access to the management network element) allows the terminal Use direct connection communication interface resources based on network scheduling mode to transmit data. For example, the terminal receives information from the network side that is used to indicate that the terminal is allowed to use the direct communication interface resource based on the network scheduling mode to transmit data. Among them, the direct connection communication interface resource based on the network scheduling mode may be the direct connection communication interface resource configured by the access network device for the terminal.

In a possible implementation manner of the first aspect, before the terminal receives the resource information from the access network device, the above method further includes: the terminal requests the access network device for direct communication interface resources.

In a possible implementation of the first aspect, the above-mentioned data is data of a first application of the terminal, and the direct communication interface resource is used to transmit data of the first application. The first application is an application that uses a direct communication interface for communication, for example, a direct communication interface is used to send/broadcast information of a vulnerable roadside unit (VRU).

In a possible implementation manner of the first aspect, the first application belongs to an allowed service of the terminal. Further, the above method may further include: the terminal determines the identity of the permitted service of the terminal.

In a possible implementation manner of the first aspect, the terminal determining the identifier of the permitted service of the terminal includes: the terminal receives the identifier of the permitted service from the terminal that accesses the management network element. The terminal receives the identifier of the permitted service from the access management network element, so that it is convenient for the terminal to determine the identifier of the service that the network side (for example, the access management network element) allows the terminal to transmit. In other words, for the non-allowed service of the terminal, the terminal It cannot be transmitted.

In a possible implementation of the first aspect, the permitted service of the terminal may refer to the permitted service of the terminal on the direct connection communication interface. In this way, it is convenient for the terminal to determine the services that the network side (for example, the access management network element) allows the terminal to transmit on the directly connected communication interface.

In a possible implementation of the first aspect, the allowed services of the terminal include not only the services allowed on the direct communication interface of the terminal, but also the allowed services on the non-direct communication interface (for example, the Uu communication interface). The permitted services are not limited in the embodiment of this application.

In a possible implementation manner of the first aspect, before the terminal receives the identifier of the allowed service from the terminal that accesses the management network element, the above method further includes: the terminal sends the identifier of at least one service to the access management network element. The identifier of the at least one service is used to indicate the service requested by the terminal. The at least one service may be a service transmitted through a direct communication interface, for example, a V2X service. Correspondingly, the identifier of at least one service is used to indicate the service that the terminal requests to be transmitted through the direct communication interface. In this way, it is convenient for the network side to determine which services the data requested by the terminal to transmit on the direct communication interface originate from, thereby authorizing the services requested by the terminal for transmission.

In a possible implementation manner of the first aspect, the identifier of at least one service is carried in a first message, and the first message further includes a first parameter, and the first parameter is used to characterize that the terminal requests to use the direct communication interface. Use network scheduling mode to transmit data. In order to use the first parameter to indicate to the access management network element that the terminal requests to use the network scheduling mode to transmit data on the directly connected communication interface. In this way, it is convenient for the network side to determine that the terminal requires the use of the network scheduling mode to transmit data on the direct connection communication interface, that is, the terminal requests the direct connection communication interface resource configured by the access network device to transmit data.

In a possible implementation of the first aspect, before the terminal transmits data on the direct communication interface resource, the above method further includes: the terminal receives first indication information, the first indication information is used to indicate that the terminal is allowed to be in The RRC-inactive state uses the direct communication interface resource based on the network scheduling mode to transmit the data of the first application. Correspondingly, the terminal transmits data through the direct communication interface resource, including: the terminal transmits the data through the direct communication interface according to the first instruction information The resource transmits the data of the first application. In this way, it is convenient for the terminal to determine, according to the first indication information, that when the terminal is in the RRC-inactive state, it can continue to transmit the data of the first application on the direct communication interface resource acquired based on the network scheduling mode. The first indication information may be an independent indication sent by the access network device to the terminal, or may be the direct communication interface resource itself configured by the access network device for the terminal. According to an independent instruction, when the terminal is in the RRC-inactive state, the terminal may use the above-mentioned direct communication interface resource to send the data of the first application on the direct communication interface. Alternatively, the terminal may also use the direct communication interface resource to send the data of the first application on the direct communication interface when it is in the RRC-inactive state according to the direct communication interface resource sent by the access network device to the terminal.

In a possible implementation manner of the first aspect, the terminal receiving the first indication information may be implemented in the following manner: the terminal receives the first indication information from the access management network element, or the terminal receives the first indication information from the access network device. Instructions.

In a possible implementation manner of the first aspect, the first message further includes a first link identifier, and the first link identifier indicates a communication link used for the terminal to transmit data on the directly connected communication interface. For example, the first link identifier may include a first identifier and a second identifier. The first identifier is the source address, that is, the address of the terminal, and the second identifier is the destination address, that is, the address of the device that receives the data of the first application. The first link identifier may also be an identifier assigned by the terminal to the communication link of the directly connected communication interface, and is used to uniquely determine the communication link of the directly connected communication interface of the terminal.

In a possible implementation of the first aspect, the allowed service is a service of the terminal that is allowed to be transmitted through the direct communication interface. It should be understood that the allowed services of the terminal may also be other services besides the services that are allowed to be transmitted through the direct communication interface.

In a possible implementation manner of the first aspect, the above method further includes: the terminal sends a first quality of service parameter to the access management network element, where the first quality of service parameter is a request from the terminal to transmit data on the directly connected communication interface. The quality of service parameters used. The first quality of service parameter may be used for the access management network element to determine an authorized quality of service parameter for the terminal.

In a possible implementation of the first aspect, the above method further includes: the terminal receives an authorized quality of service parameter from the access management network element, and the authorized quality of service parameter is used for the terminal to transmit data on the directly connected communication interface.

In a possible implementation of the first aspect, the data is data of the first application, and the direct communication interface is a PC5 interface. The above method further includes: the terminal generates a PC5 interface quality of service flow (PC5 QoS) corresponding to the first application. Flow). The terminal associates the data of the first application with the PC5 interface quality of service flow. Among them, the first application may be one of the permitted services of the terminal. The PC5 interface quality of service flow may include a PC5 interface packet filter, where a parameter value in the PC5 interface packet filter is the identifier of the first application. For example, the one parameter may be a PC5 interface quality of service flow identifier (PC5 QoS Flow identifier, PFI). The terminal associates the data of the first application with the PC5 interface quality of service flow according to the PC5 interface packet filter, so that the data of the first application is transmitted in the PC5 interface quality of service flow.

In a possible implementation of the first aspect, the terminal generating the PC5 interface quality of service flow corresponding to the first application includes: the terminal receives configuration information from the policy control network element, and the terminal generates the PC5 corresponding to the first application according to the configuration information Interface quality of service flow.

In a possible implementation manner of the first aspect, the terminal generating the PC5 interface quality of service flow corresponding to the first application includes: the terminal receives the PC5 interface quality of service flow corresponding to the first application from the policy control network element.

In a possible implementation of the first aspect, the terminal generating the PC5 interface quality of service flow corresponding to the first application includes: the terminal generates the PC5 interface quality of service flow corresponding to the first application according to pre-configured parameters.

In a possible implementation of the first aspect, the above method further includes: the terminal sends a second parameter to the access management network element, the second parameter is used to characterize that the terminal stops transmitting data on the directly connected communication interface. The second parameter is used by the access management network element to instruct the access network device to release the directly connected communication interface resources configured for the terminal.

In a possible implementation of the first aspect, before the terminal transmits data through the direct communication interface resource, the above method further includes: the terminal enters the RRC-inactive state; or the terminal enters the power saving mode in the RRC-active state .

In a possible implementation of the first aspect, the above method further includes: the terminal receives a first notification message from the access network device, where the first notification message is used to notify the terminal to enter the RRC-inactive state. Correspondingly, the terminal entering the RRC-inactive state includes: the terminal enters the RRC-inactive state according to the first notification message.

In a possible implementation of the first aspect, the above method further includes: the terminal receives a second notification message from the access network device, the second notification message is used to notify the terminal to enter the power saving mode, and the state of the terminal is RRC-active status. Correspondingly, the terminal entering the power saving mode includes: the terminal enters the power saving mode according to the first notification message.

In a possible implementation manner of the first aspect, the above method further includes: the terminal sends a fifth message to the access management network element, the fifth message indicating that the terminal supports sending the data of the first application.

In a possible implementation of the first aspect, the above method may further include: the terminal sends a third parameter to the access management network element, the third parameter is used to characterize the terminal request to use the network scheduling mode on the direct communication interface .

In a possible implementation of the first aspect, the above method may further include: the terminal receives second indication information, the second indication information is used to indicate that the terminal is allowed to use the The direct connection communication interface resource of the network scheduling mode transmits data. The terminal transmitting data through the direct connection communication interface resource includes: the terminal transmits the above data through the direct connection communication interface resource according to the second instruction information.

In a possible implementation of the first aspect, the method provided in the embodiment of the present application may further include: the terminal receives second indication information, where the second indication information is used to indicate that the terminal is allowed to be in the RRC-activated state and use the province. In the electric mode, the direct connection communication interface resources based on the network scheduling mode are used to transmit data. The terminal transmitting data through the direct connection communication interface resource includes: the terminal transmits the above data through the direct connection communication interface resource according to the second instruction information.

In a possible implementation manner of the first aspect, the terminal receiving the second indication information includes: the terminal receiving the second indication information from the access management network element, or the terminal receiving the second indication information from the access network device.

In a second aspect, an embodiment of the present application provides a communication method, including: the access network device sends resource information to the terminal, the resource information is used to characterize the direct communication interface resource, and the direct communication interface resource is used when the terminal is in the wireless resource. Control RRC-inactive state, or transmit data when in RRC-active state and in power saving mode.

In a possible implementation of the second aspect, the direct communication interface resource is a direct communication interface resource based on a network scheduling mode.

In a possible implementation manner of the second aspect, the above method further includes: the access network device receives a preferred scheduling mode from the terminal that accesses the management network element. The sending of resource information by the access network device to the terminal may include: the access network device sending the resource information to the terminal according to the preferred scheduling mode of the terminal. The priority scheduling mode is the network scheduling mode.

In a possible implementation of the second aspect, the above method further includes: the access network device receives a request message from the terminal, where the request message is used to request the direct communication interface resource.

In a possible implementation manner of the second aspect, the above-mentioned data is data of the first application, and the preferred scheduling mode is a preferred scheduling mode corresponding to the first application.

In a possible implementation manner of the second aspect, the foregoing first application belongs to an allowed service of the terminal.

In a possible implementation of the second aspect, the allowed service is a service of the terminal that is allowed to be transmitted through the direct communication interface.

In a possible implementation of the second aspect, the above method further includes: the access network device sends first indication information to the terminal, where the first indication information is used to indicate that the terminal is allowed to use the network-based network in the RRC-inactive state. The direct communication interface resource in the scheduling mode transmits the data of the first application; or, the first indication information is used to indicate that the terminal is allowed to be in the RRC-active state and use the direct communication interface resource based on the network scheduling mode when the power saving mode is adopted. Transfer the data of the first application.

In a possible implementation of the second aspect, the above method further includes: the access network device sends a first notification message to the terminal, where the first notification message is used to notify the terminal to enter the RRC-active state from the RRC-active state to the RRC-inactive state .

In a possible implementation of the second aspect, the above method further includes: the access network device sends a first notification message to the terminal, the first notification message is used to notify the terminal to enter the power saving mode, and the terminal is in RRC-activated state.

In a possible implementation manner of the second aspect, the above method further includes: within a preset time, if there is no data transmission on the Uu interface between the terminal and the access network device, the access network device performs according to the first The third indication information is to send a first notification message to the terminal. The first notification message is used to notify the terminal to enter the RRC-inactive state from the RRC-active state. Wherein, the third indication information is used to indicate that when the Uu interface between the access network device and the terminal has no data for a preset time (for example, 30s), the access network device needs to configure the terminal to enter the RRC-inactive state And in the RRC-inactive state, the terminal can use the direct communication interface resources configured by the access network device for the terminal to transmit data.

In a possible implementation manner of the second aspect, the above method further includes: within a preset time, if there is no data transmission on the Uu interface between the terminal and the access network device, the access network device performs according to the first Four indication information, sending a second notification message to the terminal. The second notification message is used to configure the terminal to maintain the RRC connection with the access network device, and when the terminal maintains the RRC connection with the access network device, the terminal uses Power saving technology, in other words, the second notification message is used to notify the terminal to enter the power saving mode in the RRC-active state. Wherein, the fourth indication information is used to indicate the access network device. When there is no data on the Uu interface between the access network device and the terminal for a preset time (for example, 30s), the access network device needs to keep communicating with the terminal The RRC connection between the two, and the access network equipment needs to configure the terminal to use power-saving technology.

In a possible implementation of the second aspect, the foregoing method further includes: when the terminal stops transmitting data through the foregoing direct communication interface resource, the access network device releases the foregoing direct communication interface resource; or, the access network device Receive instruction information from the access management network element or terminal, where the instruction information is used to instruct the release of the direct connection communication interface resource or to instruct the terminal to stop transmitting data through the direct connection communication interface resource, and the access network device releases the direct connection Communication interface resources.

In a possible implementation of the second aspect, the above method further includes: the access network device determines to release the direct communication interface resource configured for the terminal, and the access network device releases the direct communication interface resource configured for the terminal.

In a possible implementation manner of the second aspect, the access network device determining to release the direct communication interface resources configured for the terminal includes: the access network device receives instruction information from the access management network element, and the instruction information is used Instructed to release the direct communication interface resources configured for the terminal. The access network device determines to release the direct communication interface resources configured for the terminal according to the instruction information.

In a possible implementation manner of the second aspect, the above method further includes: the access network device receives the third indication information or the fourth indication information from the access management network element.

In a possible implementation manner of the second aspect, the foregoing method may further include: the access network device determines, according to the fourth indication information, that the terminal is allowed to be in the RRC-activated state, and the network-based scheduling mode is used when the power saving mode is adopted. The directly connected communication interface resources continue to transmit the data of the first application.

In a possible implementation of the second aspect, the above method may further include: the access network device determines according to the third indication information that the terminal is allowed to continue using the direct communication interface resource based on the network scheduling mode when the terminal is in the RRC-inactive state. Transfer the data of the first application.

In a possible implementation of the second aspect, the above method further includes: the access network device receives a first request message from the terminal, where the first request message is used to request that the terminal be configured to transmit the first request on the direct communication interface. An application data resource.

In a third aspect, an embodiment of the present application provides a communication method, including: accessing a management network element to obtain subscription information of a terminal. The access management network element sends the terminal's allowed service identification to the terminal according to the subscription information.

In a possible implementation of the third aspect, the access management network element sends the terminal's permitted service identification to the terminal according to the contract information, including: the access management network element obtains the terminal's permitted service from the contract information Of the logo. Then the access management network element sends the terminal's allowed service identification to the terminal.

In a possible implementation manner of the third aspect, before sending the terminal's permitted service identifier to the terminal, the above method further includes: the access management network element receives the identifier of at least one service from the terminal, and the at least one service The identifier is used to indicate the service requested by the terminal.

In a possible implementation manner of the third aspect, the identifier of the at least one service is used to indicate the service that the terminal requests to be transmitted on the direct communication interface.

In a possible implementation manner of the third aspect, the identifier of at least one service is carried in a first message, and the first message further includes a first parameter, and the first parameter is used to characterize that the terminal requests to use the direct communication interface. Use network scheduling mode to transmit data. The above method may further include: the access management network element sends first indication information to the access network device or terminal according to the first parameter, where the first indication information is used to indicate that the terminal is allowed to use the network-based scheduling mode in the RRC-inactive state The directly connected communication interface resource transmits the data of the first application, and the first application belongs to at least one service.

In a possible implementation manner of the third aspect, the first message further includes a first link identifier, and the first link identifier indicates a communication link used for the terminal to transmit data on the directly connected communication interface.

In a possible implementation of the third aspect, the above method further includes: the access management network element sends an authorized quality of service parameter to the terminal, and the authorized quality of service parameter is used for the terminal to transmit data on the directly connected communication interface.

In a possible implementation of the third aspect, the above method further includes: the access management network element receives a first quality of service parameter from the terminal, where the first quality of service parameter is the terminal's request to transmit data on the directly connected communication interface The quality of service parameters used.

In a possible implementation of the third aspect, the above method further includes: the access management network element receives a second parameter from the terminal, where the second parameter is used to characterize that the terminal stops transmitting data on the directly connected communication interface. The access management network element instructs the access network device to release the directly connected communication interface resources of the terminal according to the second parameter. Alternatively, the second parameter is used to characterize that the terminal stops transmitting the data of the first application on the directly connected communication interface.

In a possible implementation manner of the third aspect, the method provided in the embodiment of the present application further includes: the access management network element sends the preferred scheduling mode of the terminal to the access network device. For example, the preferred scheduling mode of the terminal may be the network scheduling mode.

In a possible implementation manner of the third aspect, the allowed service is a service of the terminal that is allowed to be transmitted through the direct communication interface.

In a possible implementation of the third aspect, the above method further includes: the access management network element receives a third parameter from the terminal, the third parameter representing that the terminal requests to use the network scheduling mode on the direct communication interface. The access management network element sends second indication information to the access network device or terminal according to the third parameter, and the second indication information is used to indicate that the terminal is allowed to use the direct communication interface based on the network scheduling mode in the RRC-inactive state Resource transfer data. Alternatively, the second indication information is used to indicate that the terminal is allowed to use the direct communication interface resource based on the network scheduling mode to transmit data when the terminal is in the RRC-activated state and adopts the power saving mode.

In the fourth aspect, the embodiments of the present application provide a communication device, which can implement the first aspect or any one of the possible implementations of the first aspect, and therefore can also implement the first aspect or The beneficial effects in any possible implementation of the first aspect. The communication device may be a terminal, or a device that can support the terminal to implement the first aspect or any one of the possible implementation manners of the first aspect. For example, it is applied to the chip in the terminal. This kind of communication device can implement the above method by software, hardware, or by hardware executing corresponding software.

An example is the communication device, the communication device may be a terminal or a chip applied to the terminal, the communication device includes: a communication unit, and a processing unit, wherein the processing unit is used for processing information, and the communication unit is used for sending and receiving information. For example, the communication unit is configured to receive resource information from the access network device, and the resource information is used to characterize the resources of the directly connected communication interface. The communication unit is also used to transmit data through direct communication interface resources, where the terminal is in a radio resource control RRC-inactive state, or the terminal is in an RRC-active state, and the terminal adopts a power saving mode.

Among them, the direct communication interface refers to a communication interface between two terminals that does not transit through the base station but communicates. Direct communication interface communication includes control signaling and data transmission. The direct communication interface can also be referred to as a PC5 interface.

In a possible implementation manner of the fourth aspect, the direct communication interface resource is a direct communication interface resource based on a network scheduling mode.

In a possible implementation of the fourth aspect, the communication unit is used for the processing unit before transmitting data through direct communication interface resources, and is also used for determining that the network side (for example, the access management network element) allows the terminal to use the interface The network access device is the direct connection communication interface resource based on the network scheduling mode configured for the terminal to transmit data.

In a possible implementation manner of the fourth aspect, the communication unit is further configured to request direct communication interface resources from the access network device.

In a possible implementation manner of the fourth aspect, the above-mentioned data is data of the first application of the terminal, and the direct communication interface resource is used to transmit the data of the first application. The first application is an application that uses a direct communication interface for communication, for example, a direct communication interface is used to send/broadcast information of a vulnerable roadside unit (VRU).

In a possible implementation manner of the fourth aspect, the first application belongs to the permitted service of the terminal, and the processing unit is further used to determine the identifier of the permitted service of the terminal.

In a possible implementation manner of the fourth aspect, the processing unit is configured to receive, through the communication unit, the identifier of the permitted service from the terminal that accesses the management network element, so as to determine the identifier of the permitted service of the terminal.

In a possible implementation manner of the fourth aspect, the communication unit is further configured to send an identifier of at least one service to the access management network element, and the identifier of the at least one service is used to indicate the service requested by the terminal. The at least one service may be a service transmitted through a direct communication interface, for example, a V2X service. Correspondingly, the identifier of at least one service is used to indicate the service that the terminal requests to be transmitted through the direct communication interface. In this way, it is convenient for the network side to determine which services the data requested by the terminal comes from, so as to authorize the application requested by the terminal for transmission.

In a possible implementation manner of the fourth aspect, the identifier of at least one service is carried in the first message, and the first message further includes a first parameter, which is used to characterize that the terminal requests to use on the direct communication interface Network scheduling mode transmits data. In order to use the first parameter to indicate to the access management network element that the terminal requests to use the network scheduling mode to transmit data on the directly connected communication interface. This is convenient for the network side to determine that the terminal requires the use of the network scheduling mode to transmit data on the PC5 interface communication link, that is, the terminal requests to use the direct communication interface resource configured by the access network device to transmit data.

In a possible implementation manner of the fourth aspect, the communication unit is further configured to receive first indication information, where the first indication information is used to indicate that the terminal is allowed to use the direct connection based on the network scheduling mode in the RRC-inactive state. The communication interface resource transmits the data of the first application; correspondingly, the communication unit is further configured to transmit the data of the first application through the directly connected communication interface resource according to the first indication information. In this way, it is convenient for the processing unit to determine, according to the first indication information, that when the terminal is in the RRC-inactive state, it can continue to transmit the data of the first application on the direct communication interface resource acquired based on the network scheduling mode. The first indication information may be an independent indication sent by the access network device to the terminal, or may be the direct communication interface resource itself configured by the access network device for the terminal. The processing unit may, according to an independent instruction, when the terminal is in the RRC-inactive state, use the direct communication interface resource to send the data of the first application on the direct communication interface through the communication unit. Alternatively, the processing unit may also use the direct communication interface resource to send the second communication interface on the direct communication interface through the communication unit when the terminal is in the RRC-inactive state according to the direct communication interface resource sent by the access network device to the terminal. One application data.

In a possible implementation manner of the fourth aspect, the communication unit is further configured to receive first indication information from an access management network element, or receive first indication information from an access network device.

In a possible implementation manner of the fourth aspect, the first message further includes a first link identifier, and the first link identifier indicates a communication link used for the terminal to transmit data on the directly connected communication interface. For example, the first link identifier may include a first identifier and a second identifier. The first identifier is the source address, that is, the address of the terminal, and the second identifier is the destination address, that is, the address of the device that receives the data of the first application. The first link identifier may also be an identifier assigned by the terminal to the PC5 communication link, and is used to uniquely determine the terminal PC5 communication link.

In a possible implementation manner of the fourth aspect, the allowed service is a service of the terminal that is allowed to be transmitted through the direct communication interface. It should be understood that the allowed services of the terminal may also be other services besides the services that are allowed to be transmitted through the direct communication interface.

In a possible implementation manner of the fourth aspect, the communication unit is further configured to send a first quality of service parameter to the access management network element, where the first quality of service parameter is a request from the terminal to transmit data on the directly connected communication interface. The quality of service parameters used. So that the access management network element determines the authorized quality of service parameter for the terminal according to the first quality of service parameter.

In a possible implementation manner of the fourth aspect, the communication unit is further configured to receive an authorized quality of service parameter from the access management network element, and the authorized quality of service parameter is used for the terminal to transmit data on the directly connected communication interface. The authorized service quality parameter is determined by the first service quality parameter.

In a possible implementation of the fourth aspect, the data is the data of the first application, the direct communication interface is the PC5 interface, and the processing unit is also used to generate the PC5 interface quality of service flow (PC5 QoS Flow) corresponding to the first application. ). The processing unit is also used to associate the data of the first application with the quality of service flow of the PC5 interface. The first application in the embodiment of the present application may be one of the permitted services of the terminal. The PC5 interface quality of service flow includes a PC5 interface packet filter, where a parameter value in the PC5 interface packet filter is an identifier of the first application. For example, the one parameter may be a PC5 interface quality of service flow identifier (PC5 QoS Flow identifier, PFI). The processing unit is configured to associate the data of the first application with the PC5 interface quality of service flow according to the PC5 interface packet filter, so that the data of the first application is transmitted in the PC5 interface quality of service flow.

In a possible implementation of the fourth aspect, the processing unit is configured to receive configuration information from the policy control network element through the communication unit, and the processing unit is configured to generate a PC5 interface quality of service flow corresponding to the first application according to the configuration information .

In a possible implementation manner of the fourth aspect, the processing unit is configured to receive, through the communication unit, the PC5 interface quality of service flow corresponding to the first application from the policy control network element.

In a possible implementation manner of the fourth aspect, the processing unit is configured to generate the PC5 interface quality of service flow corresponding to the first application according to the pre-configured parameters.

In a possible implementation manner of the fourth aspect, the communication unit is configured to send a second parameter to the access management network element, where the second parameter is used to characterize that the terminal stops transmitting data on the directly connected communication interface. The second parameter is convenient for the access management network element to instruct the access network device to release the directly connected communication interface resources configured for the terminal.

In a possible implementation manner of the fourth aspect, before the communication unit transmits data through the direct communication interface resource, the processing unit is further configured to control the terminal to enter the RRC-inactive state. Or the processing unit is also used to control the terminal to enter the power saving mode in the RRC-active state.

In a possible implementation manner of the fourth aspect, the communication unit is further configured to receive a first notification message from the access network device, where the first notification message is used to notify the terminal to enter the RRC-inactive state. The corresponding processing unit is configured to control the terminal to enter the RRC-inactive state, and includes: a processing unit, configured to control the terminal to enter the RRC-inactive state according to the first notification message.

In a possible implementation manner of the fourth aspect, the communication unit is further configured to receive a first notification message from the access network device, where the first notification message is used to notify the terminal to enter the RRC-activated state, and uses power saving model. The corresponding processing unit is configured to control the terminal to enter the RRC-activated state and adopt the power saving mode, including: a processing unit, configured to control the terminal to enter the RRC-activated state and adopt the power saving mode according to the first notification message.

In a possible implementation manner of the fourth aspect, the communication unit is further configured to send a fifth message to the access management network element, where the fifth message indicates that the terminal supports sending the data of the first application.

In a possible implementation manner of the fourth aspect, the communication unit is also used for the terminal to send a third parameter to the access management network element, and the third parameter is used to characterize that the terminal requests to use the network scheduling mode on the direct communication interface .

In a possible implementation manner of the fourth aspect, the communication unit is further configured to receive second indication information, the second indication information is used to indicate that the terminal is allowed to use network-based Directly connected communication interface resources in scheduling mode transmit data. The communication unit is configured to transmit data through the directly connected communication interface resource, and includes: a communication unit, configured to transmit the above-mentioned data through the directly connected communication interface resource according to the second instruction information.

In a possible implementation manner of the fourth aspect, the communication unit is configured to receive second indication information from an access management network element, or the terminal receives second indication information from an access network device.

In another example, an embodiment of the present application provides a communication device. The communication device may be a terminal or a chip in the terminal. The communication device may include a communication unit. When the communication device is a terminal, the communication device may further include a processing unit and a storage unit. The communication unit may be a transceiver for sending and receiving data/information, and the storage unit may be a memory. The storage unit is used to store computer program code, and the computer program code includes instructions. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit, so that the terminal implements the first aspect or a communication method described in any one of the possible implementation manners of the first aspect. When the communication device is a chip in the terminal, the processing unit may be a processor, and the communication interface may be an input/output interface, a pin, a circuit, or the like. The processing unit executes the computer program code stored in the storage unit, so that the terminal implements the communication method described in the first aspect or any one of the possible implementations of the first aspect, and the storage unit may be in the chip The storage unit (for example, a register, a cache, etc.) may also be a storage unit (for example, a read-only memory, a random access memory, etc.) located outside the chip in the terminal.

Optionally, the processor, the communication interface and the memory are coupled with each other.

In the fifth aspect, the embodiments of the present application provide a communication device, which can implement the second aspect or any one of the communication methods described in the possible implementation of the second aspect, so the second aspect can also be implemented. Aspect or the beneficial effects in any possible implementation manner of the second aspect. The communication device of this type may be an access network device, or a device that can support the access network device to implement the second aspect or any one of the possible implementation manners of the second aspect. For example, it is applied to chips in access network equipment. This kind of communication device can implement the above method by software, hardware, or by hardware executing corresponding software.

As an example, an embodiment of the present application provides a communication device, including: a processing unit and a communication unit, the processing unit is used to perform information or data processing, and the communication unit is used to send and receive information or receipts. For example, the communication unit is used to send resource information to the terminal. The resource information is used to characterize the direct communication interface resources. The direct communication interface resources are used when the terminal is in the radio resource control RRC-inactive state, or the terminal is in the RRC-inactive state. Active state, but the terminal transmits data when the power saving mode is adopted.

In a possible implementation manner of the fifth aspect, the direct communication interface resource is a direct communication interface resource based on a network scheduling mode.

In a possible implementation manner of the fifth aspect, the communication unit is configured to receive a preferred scheduling mode from a terminal that accesses the management network element. The communication unit is configured to send resource information to the terminal, including: the processing unit is configured to use the communication unit to send resource information to the terminal according to a preferred scheduling mode of the terminal. The priority scheduling mode is the network scheduling mode.

In a possible implementation manner of the fifth aspect, the communication unit is configured to send resource information to the terminal, including: a communication unit, configured to receive a request message from the terminal, and the request message is used to request the direct communication interface resource .

In a possible implementation manner of the fifth aspect, the data is data of the first application, and the preferred scheduling mode is the preferred scheduling mode corresponding to the first application.

In a possible implementation manner of the fifth aspect, the first application belongs to an allowed service of the terminal.

In a possible implementation manner of the fifth aspect, the allowed service is a service of the terminal that is allowed to be transmitted through the direct communication interface.

In a possible implementation manner of the fifth aspect, the communication unit is configured to send first indication information to the terminal, where the first indication information is used to indicate that the terminal is allowed to use the direct network scheduling mode based on the RRC-inactive state. Connect the communication interface resource to transmit the data of the first application. Alternatively, the first indication information is used to indicate that the terminal is allowed to be in the RRC-activated state, and when the power saving mode is adopted, the direct communication interface resource based on the network scheduling mode is used to transmit the data of the first application.

In a possible implementation manner of the fifth aspect, the communication unit is configured to send a first notification message to the terminal, where the first notification message is used to notify the terminal to enter the RRC-inactive state from the RRC-active state.

In a possible implementation manner of the fifth aspect, the communication unit is configured to send a first notification message to the terminal, where the first notification message is used to notify the terminal to adopt the power saving mode in the RRC-activated state.

In a possible implementation manner of the fifth aspect, within a preset time, if there is no data transmission on the Uu interface between the terminal and the access network device, the processing unit is configured to, according to the third instruction information, The first notification message is sent to the terminal through the communication unit, and the first notification message is used to notify the terminal to enter the RRC-inactive state. Wherein, the third indication information is used to indicate that when the Uu interface between the access network device and the terminal has no data for a preset time (for example, 30s), the access network device needs to configure the terminal to enter the RRC-activated state RRC-inactive state, and in the RRC-inactive state, the terminal can continue to use the direct communication interface resources configured by the access network device for the terminal to transmit data.

In a possible implementation manner of the fifth aspect, within a preset time, if there is no data transmission on the Uu interface between the terminal and the access network device, the processing unit is configured to, according to the fourth instruction information, A second notification message is sent to the terminal through the communication unit. The second notification message is used to configure the terminal to maintain the RRC connection with the access network device, and when the terminal maintains the RRC connection with the access network device, the terminal uses the Power technology, in other words, the second notification message is used to notify the terminal to enter the power saving mode in the RRC-active state. Wherein, the fourth indication information is used to indicate the access network device. When there is no data on the Uu interface between the access network device and the terminal for a preset time (for example, 30s), the access network device needs to keep communicating with the terminal The RRC connection between the two, and the access network equipment needs to configure the terminal to use power-saving technology.

In a possible implementation manner of the fifth aspect, when the terminal stops transmitting data through the direct connection communication interface resource, the processing unit is also used to release the direct connection communication interface resource, or when the communication unit receives data from the access management network When the unit or terminal indicates the instruction information, the instruction information is used to instruct to release the direct communication interface resource or to instruct the terminal to stop transmitting data through the direct communication interface resource, and the processing unit is used to release the direct communication interface resource.

In a possible implementation manner of the fifth aspect, the communication unit is configured to receive instruction information from an access management network element, where the instruction information is used to instruct the terminal to stop transmitting data through the directly connected communication interface resource. The processing unit is configured to determine, according to the instruction information, that the terminal stops transmitting data through the direct communication interface resource.

In a possible implementation manner of the fifth aspect, the processing unit is configured to determine to release the direct communication interface resource configured for the terminal, and the processing unit releases the direct communication interface resource configured for the terminal.

In a possible implementation manner of the fifth aspect, the processing unit is configured to determine to release direct communication interface resources configured for the terminal, and includes: a communication unit, configured to receive instruction information from an access management network element, the instruction The information is used to indicate the release of direct communication interface resources configured for the terminal. The processing unit is configured to determine to release the direct communication interface resources configured for the terminal according to the instruction information.

In a possible implementation manner of the fifth aspect, the communication unit is further configured to receive the third indication information or the fourth indication information from the access management network element.

In a possible implementation manner of the fifth aspect, the processing unit is further configured to determine, according to the fourth indication information, that the terminal is allowed to be in the RRC-active state and use the direct communication interface based on the network scheduling mode when the power saving mode is adopted. The resource continues to transmit the data of the first application.

In a possible implementation manner of the fifth aspect, the processing unit is further configured to determine according to the third indication information that the terminal is allowed to use the direct communication interface resource based on the network scheduling mode to continue transmission when the terminal is in the RRC-inactive state. Application data.

In a possible implementation of the fifth aspect, the communication unit is further configured to receive a first request message from the terminal, and the first request message is used to request that the terminal be configured to transmit the first application on the direct communication interface. Data resources.

In another example, an embodiment of the present application provides a communication device. The communication device may be an access network device or a chip in the access network device. The communication device may include a communication unit. When the communication device is an access network device, the communication device may further include a processing unit and a storage unit. The communication unit may be a transceiver for sending and receiving data/information, and the storage unit may be a memory. The storage unit is used to store computer program code, and the computer program code includes instructions. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit, so that the access network device implements the second aspect or a communication method described in any one of the possible implementation manners of the second aspect. When the communication device is a chip in an access network device, the processing unit may be a processor, and the communication interface may be an input/output interface, a pin, or a circuit. The processing unit executes the computer program code stored in the storage unit, so that the access network device implements the communication method described in the second aspect or any one of the possible implementations of the second aspect, and the storage unit may be the The storage unit (for example, register, cache, etc.) in the chip may also be a storage unit (for example, read-only memory, random access memory, etc.) located outside the chip in the access network device.

Optionally, the processor, the communication interface and the memory are coupled with each other.

In the sixth aspect, the embodiments of the present application provide a communication device, which can implement the third aspect or any one of the possible implementations of the third aspect described in the communication method, so the third aspect can also be implemented. Aspect or the beneficial effects in any possible implementation manner of the third aspect. The communication device of this type may be an access management network element, or a device that can support the access management network element to implement the third aspect or any one of the possible implementation manners of the third aspect. For example, it is applied to the chip in the access management network element. This kind of communication device can implement the above method by software, hardware, or by hardware executing corresponding software.

As an example, an embodiment of the present application provides a communication device. The communication device includes a communication unit configured to obtain contract information of a terminal. The communication unit is also used to send the terminal's allowed service identification to the terminal according to the contract information.

In a possible implementation manner of the sixth aspect, the processing unit is configured to obtain the identifier of the permitted service of the terminal from the subscription information. Then the processing unit sends the identification of the allowed service of the terminal to the terminal through the communication unit.

In a possible implementation of the sixth aspect, before the communication unit is configured to send the terminal's allowed service identifier to the terminal, the communication unit is also configured to receive at least one service identifier from the terminal, and the at least one service identifier is The service identifier is used to indicate the service requested by the terminal.

In a possible implementation manner of the sixth aspect, the identifier of the at least one service is used to indicate the service that the terminal requests to be transmitted on the direct communication interface.

In a possible implementation manner of the sixth aspect, the identifier of at least one service is carried in a first message, and the first message further includes a first parameter, and the first parameter is used to characterize that the terminal requests to use the direct communication interface. Use network scheduling mode to transmit data. The processing unit is further configured to send first indication information to the access network device or terminal according to the first parameter, where the first indication information is used to indicate that the terminal is allowed to use the direct communication interface based on the network scheduling mode in the RRC-inactive state The resource transmits data of the first application, and the first application belongs to at least one service.

In a possible implementation manner of the sixth aspect, the first message further includes a first link identifier, and the first link identifier indicates a communication link used for the terminal to transmit data on the directly connected communication interface.

In a possible implementation manner of the sixth aspect, the communication unit is further configured to send authorized service quality parameters to the terminal, and the authorized service quality parameters are used for the terminal to transmit data on the directly connected communication interface.

In a possible implementation of the sixth aspect, the communication unit is further configured to receive a first quality of service parameter from the terminal, where the first quality of service parameter is a service used by the terminal to request data transmission on the directly connected communication interface Quality parameters.

In a possible implementation manner of the sixth aspect, the communication unit is further configured to receive a second parameter from the terminal, and the second parameter is used to characterize that the terminal stops transmitting data on the directly connected communication interface. The access management network element instructs the access network device to release the directly connected communication interface resources of the terminal according to the second parameter.

In a possible implementation manner of the sixth aspect, the communication unit is further configured to send the preferred scheduling mode of the terminal to the access network device.

In a possible implementation manner of the sixth aspect, the allowed service is a service of the terminal that is allowed to be transmitted through the direct connection communication interface.

In a possible implementation of the sixth aspect, the communication unit is further configured to receive a third parameter from the terminal, and the third parameter represents that the terminal requests to use the network scheduling mode on the direct communication interface. The access management network element sends second indication information to the access network device or the terminal according to the third parameter, where the second indication information is used to indicate that the terminal is allowed to use the network-based network in the RRC-inactive state. Directly connected communication interface resources in scheduling mode transmit data.

In another example, an embodiment of the present application provides a communication device. The communication device may be an access management network element or a chip in the access management network element. The communication device may include a communication unit. When the communication device is an access network device, the communication device may also include a processing unit and a storage unit. The communication unit may be a transceiver for sending and receiving data/information, and the storage unit may be a memory. The storage unit is used to store computer program code, and the computer program code includes instructions. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit, so that the access management network element implements a communication method described in the third aspect or any one of the possible implementation manners of the third aspect. When the communication device is a chip connected to the management network element, the processing unit may be a processor, and the communication interface may be an input/output interface, a pin, a circuit, or the like. The processing unit executes the computer program code stored in the storage unit, so that the access management network element implements a communication method described in the third aspect or any one of the possible implementations of the third aspect. The storage unit may be The storage unit (for example, register, cache, etc.) in the chip may also be a storage unit (for example, read-only memory, random access memory, etc.) located outside the chip in the access management network element.

Optionally, the processor, the communication interface and the memory are coupled with each other.

In a seventh aspect, the embodiments of the present application provide a computer-readable storage medium, and the computer-readable storage medium stores a computer program or instruction. When the computer program or instruction runs on a computer, the computer can execute the operations as described in the first aspect to the first aspect. A communication method described in any one of the possible implementations on the one hand.

In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, and a computer program or instruction is stored in the computer-readable storage medium. A communication method described in any one of the possible implementations of the two aspects.

In the ninth aspect, the embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium stores a computer program or instruction. When the computer program or instruction is run on a computer, the computer executes operations such as the third aspect to the first aspect. A communication method described in any one of the three possible implementations.

In a tenth aspect, embodiments of the present application provide a computer program product including instructions, which when the instructions run on a computer, cause the computer to execute the communication method described in the first aspect or various possible implementations of the first aspect .

In an eleventh aspect, the present application provides a computer program product including instructions that, when the instructions run on a computer, cause the computer to execute the second aspect or a communication method described in various possible implementations of the second aspect.

In a twelfth aspect, this application provides a computer program product including instructions, which when the instructions run on a computer, cause the computer to execute the second aspect or a communication method described in various possible implementations of the second aspect.

In a thirteenth aspect, an embodiment of the present application provides a communication system, which includes any one or more of the following: the fourth aspect and the communication device described in various possible implementation manners, and the fifth aspect and the fifth aspect Various possible implementations of the aspects described in the communication device.

In a possible implementation, the communication system may further include: the communication device described in the sixth aspect and various possible implementation manners of the sixth aspect.

In a fourteenth aspect, an embodiment of the present application provides a communication device. The communication device includes a processor and a storage medium. The storage medium stores instructions. When the instructions are executed by the processor, the Possible implementations describe a communication method.

In a fifteenth aspect, an embodiment of the present application provides a communication device. The communication device includes a processor and a storage medium. The storage medium stores instructions. Possible implementations describe a communication method.

In a sixteenth aspect, an embodiment of the present application provides a communication device that includes a processor and a storage medium. The storage medium stores instructions. When the instructions are executed by the processor, they can implement various aspects such as the third aspect or the third aspect. Possible implementations describe a communication method.

In a seventeenth aspect, the present application provides a chip or chip system. The chip or chip system includes at least one processor and a communication interface. The communication interface and at least one processor are interconnected by wires, and the at least one processor is used to run computer programs or instructions. , To perform a communication method described in any one of the first aspect to any one of the possible implementation manners of the first aspect.

In an eighteenth aspect, the present application provides a chip or chip system. The chip or chip system includes at least one processor and a communication interface. The communication interface and the at least one processor are interconnected by wires, and the at least one processor is used to run computer programs or instructions. , To perform a communication method described in any one of the second aspect to any one of the possible implementation manners of the second aspect.

In a nineteenth aspect, the present application provides a chip or chip system that includes at least one processor and a communication interface. The communication interface and at least one processor are interconnected by wires, and the at least one processor is used to run computer programs or instructions. , In order to perform a communication method described in any one of the third aspect to any one of the possible implementation manners of the third aspect.

Among them, the communication interface in the chip can be an input/output interface, a pin, or a circuit.

In a possible implementation, the chip or chip system described above in this application further includes at least one memory, and instructions are stored in the at least one memory. The memory may be a storage unit inside the chip, for example, a register, a cache, etc., or a storage unit of the chip (for example, a read-only memory, a random access memory, etc.).

In a twentieth aspect, an embodiment of the present application provides a communication device. The communication device includes a processor, the processor is coupled to a memory, and instructions are stored in the memory, and the processor is used to execute the instructions to implement the first aspect or the first aspect. A communication method described in the various possible implementations.

In a twenty-first aspect, an embodiment of the present application provides a communication device. The communication device includes a processor, the processor is coupled to a memory, and instructions are stored in the memory, and the processor is used to execute the instructions to implement the second aspect or the second aspect A communication method described in the various possible implementations.

In a twenty-second aspect, an embodiment of the present application provides a communication device that includes a processor, the processor is coupled to a memory, and instructions are stored in the memory, and the processor is used to execute the instructions to implement the third aspect or the third aspect A communication method described in the various possible implementations.

It is understandable that the memory described in the twentieth aspect to the twenty-second aspect in the embodiments of the present application may be located inside or outside the communication device, which is not limited in the embodiment of the present application.

For the beneficial effects of the second aspect to the twenty-second aspect and various implementation manners of this application, reference may be made to the analysis of the beneficial effects in the first aspect and various implementation manners, which will not be repeated here.

Description of the drawings

FIG. 1 is an architecture diagram of a communication system provided by an embodiment of this application;

FIG. 2 is a diagram of a 5G network architecture provided by an embodiment of this application;

FIG. 3 is a schematic structural diagram of a communication device provided by an embodiment of this application;

4 to 13 are schematic diagrams of related interaction processes of a communication method provided by embodiments of this application;

FIG. 14 is a schematic structural diagram of a communication device provided by an embodiment of this application;

15 is a schematic structural diagram of another communication device provided by an embodiment of this application;

FIG. 16 is a schematic structural diagram of a chip provided by an embodiment of the application.

Detailed ways

In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same items or similar items that have substantially the same function and effect. For example, the first message and the second message are only for distinguishing different messages, and the sequence of the messages is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and order of execution, and words such as "first" and "second" do not limit the difference.

It should be noted that in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in this application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner.

In this application, "at least one" refers to one or more, and "multiple" refers to two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a). For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .

The technical solution of this application can be applied to various communication systems, such as: long time evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) ) System, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, public land mobile network (PLMN) system, device-to-device (device to device, D2D) network system or machine to machine (M2M) network system or new radio (NR) system or the 5th generation (5G) network system and future network systems, etc. .

The network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems. In the embodiments of the present application, the method provided is applied to an NR system or a 5G network as an example for description.

As shown in Figure 1, Figure 1 shows an architecture diagram of a communication system provided by an embodiment of the present application. The communication system includes: an access network device 10, a terminal 20 communicating with the access network device 10, and a terminal 20 20 terminal 30 for communication. There is a first interface between the access network device 10 and the terminal 20, and a second interface between the terminal 20 and the terminal 30.

Exemplarily, the first interface may be referred to as a Uu interface, using a cellular network frequency band (such as 1.8 GHz), and the Uu interface is the communication between the terminal and the network. For example, as shown in Figure 1, for upload transmission, the terminal 10 can send data a to the access network device 10 through the Uu interface, and then the access network device 10 uses the core network to send the data a to the application server (application server, AS) (for example, V2X application server). Or for downlink transmission, the AS may send the downlink data to the core network, and then the core network sends the downlink data to the access network device 10, and then the access network device 10 sends the downlink data to the terminal 10 using the Uu interface.

Exemplarily, the second interface may be referred to as a direct communication interface. For example, the direct communication interface is a PC5 interface, which uses a dedicated frequency band (such as 5.9 GHz) for the Internet of Vehicles. The direct communication interface is an interface used for communication between the terminal and the terminal. For example, the terminal 20 sends data b to the terminal 30 through the direct communication interface. The difference between direct communication interface communication and Uu interface communication is that the direct communication interface communication does not require the participation of the network (data b does not pass through the base station). Of course, there may also be a first interface between the terminal 30 and the access network device 10. Direct communication interfaces are generally used in vehicle-to-everything (V2X) communication scenarios, or device-to-device (D2D) scenarios where direct communication between devices can be performed.

The names of the first interface and the second interface in the embodiments of the present application are only examples, and the embodiments of the present application do not limit the names of the first interface and the second interface.

In the embodiment of the present application, the communication between the terminal 20 and the terminal 30 is realized by using the side link on the direct communication interface. In the embodiment of the present application, the side link on the direct communication interface may be referred to as the PC5 interface communication link. Road, or directly connected to the communication interface link. The so-called PC5 interface communication link refers to a link through which one terminal 20 sends data to another terminal 30 through a directly connected communication interface link.

In the embodiment of the present application, the resources used for data transmission between the terminal 20 and the terminal 30 using the direct communication interface may be referred to as the direct communication interface resource.

In a possible implementation manner, as shown in FIG. 1, the communication system may further include: an access management network element 40.

As an example, the core network in FIG. 1 may be a 4th generation (4G) core network (for example, evolved packet core (EPC)) or a 5G core network (5G core, 5GC), or The core network in various future communication systems.

Taking the core network may be a 4G core network as an example, the access network device 10 may be an evolved Node B (eNB or eNodeB) in a 4G system. The terminal 20 or the terminal 30 is a terminal that can perform information transmission with an eNB. The eNB accesses the EPC network through the S1 interface. The network element or entity corresponding to the access management network element 40 may be a mobility management entity (mobility management entity, MME).

Taking the core network may be a 5G core network as an example, the access network device 10 may be the next generation node B (gNB) in the NR system, and the terminal 20 or the terminal 30 is a terminal that can transmit information with the gNB . The gNB accesses the 5GC through the NG interface, and the network element or entity corresponding to the access management network element 40 may be an access and mobility management function (AMF) network element.

Exemplarily, taking the core network as 5GC and the access network device 10 as the (radio) access network ((R)AN) as an example, as shown in Figure 2, in 5GC, except for the above In addition to the arrived AMF network elements, it can also include: session management function (SMF) network elements, or policy control function (policy control function) network elements or application function (AF) network elements, network capabilities Open function (network exposure function, NEF) network elements, user data repository (UDR), unified data management (unified data management, UDM) network elements, and user plane function (UPF) network elements.

Among them, the terminal communicates with the AMF network element through the N1 interface (N1 for short). The AMF entity communicates with the SMF network element through the N11 interface (N11 for short). The SMF network element communicates with one or more UPF network elements through the N4 interface (N4 for short). Any two UPF network elements among one or more UPF network elements communicate through an N9 interface (abbreviated as N9). The UPF network element communicates with the data network (DN) managed and controlled by the AF network element through the N6 interface (N6 for short). The terminal accesses the network through the (R)AN), and the (R)AN) communicates with the AMF network element through the N2 interface (abbreviated as N2). The SMF network element communicates with the PCF network element through the N7 interface (N7 for short), and the PCF network element communicates with the AF network element through the N5 interface. (R) AN) communicates with UPF network element through N3 interface (abbreviated as N3). Any two AMF network elements communicate through the N14 interface (N14 for short). The SMF network element communicates with the UDM through the N10 interface (N10 for short). The AMF network element communicates with AUSF through the N12 interface (N12 for short). The AUSF network element communicates with the UDM network element through the N13 interface (N13 for short). The AMF network element communicates with the UDM network element through the N8 interface (N8 for short).

It should be understood that, in the network architecture shown in FIG. 2, the control plane network elements may also interact with service-oriented interfaces. For example, AMF network elements, SMF network elements, UDM network elements, or PCF network elements use service-oriented interfaces to interact. For example, the service-oriented interface provided by the AMF network element to the outside may be Namf. The service-oriented interface provided by the SMF network element to the outside may be Nsmf. The service-oriented interface provided by the UDM network element to the outside may be Nudm. The service-oriented interface provided by the PCF network element to the outside may be Npcf. It should be understood that related descriptions of the names of various service-oriented interfaces can refer to the 5G system architecture (5G system architecture) diagram in the prior art, which will not be repeated here.

It should be noted that Fig. 2 only exemplarily shows a UPF network element and SMF network element. Of course, multiple UPF network elements and SMF network elements may be included, such as SMF network element 1 and SMF network element 2, which are not specifically limited in the embodiment of the present application.

It should be noted that (R)AN), AMF network element, SMF network element, UDM network element, UPF network element, and PCF network element in FIG. 2 are only a name, and the name does not constitute a limitation on the device itself. In 5G networks and other networks in the future, the network elements or entities corresponding to (R)AN), AMF network elements, SMF network elements, UDM network elements, UPF network elements, and PCF network elements can also have other names. The application embodiment does not specifically limit this. For example, the UDM network element may also be replaced with a user home server (home subscriber server, HSS) or user subscription database (user subscription database, USD) or a database entity, etc., which will be uniformly explained here and will not be repeated in the following .

The terminal can be a terminal device, including a device that provides voice and/or data connectivity to the user, specifically, includes a device that provides voice to the user, or includes a device that provides data connectivity to the user, or includes a device that provides voice and data to the user Connectivity equipment. For example, it may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem. The terminal device can communicate with the core network via a radio access network (RAN), exchange voice or data with the RAN, or exchange voice and data with the RAN. The terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, vehicle to everything (V2X) terminal equipment , Machine-to-machine/machine-type communications (M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station) ), mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent (user agent), or user equipment (user device), etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal equipment, portable, pocket-sized, hand-held, mobile devices with built-in computers, and so on. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants, PDA), and other equipment. It also includes restricted devices, such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.

As an example and not a limitation, in the embodiment of the present application, the terminal may also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

The various terminals introduced above, if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be regarded as vehicle-mounted terminal equipment, for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU). .

The method and apparatus provided in the embodiments of the present application can be applied to a terminal device or a network device. The terminal device or network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer . The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. Moreover, in the embodiment of the present application, the specific structure of the execution body of the method of transmitting a signal is not particularly limited in the embodiment of the present application, as long as the program that records the code of the method of transmitting the signal of the embodiment of the present application can be run to It is sufficient to communicate according to the signal transmission method of the embodiment of the present application. For example, the execution subject of the wireless communication method of the embodiment of the present application may be a terminal device or a network device, or a terminal device or a network device that can call a program and The functional module that executes the program.

In addition, various aspects or features of the embodiments of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques. The term "article of manufacture" used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, computer-readable storage media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs, DVDs) ), etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, various storage media described herein may represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

The access network device 10 may also be referred to as a base station, which is an entity that can be used to transmit or receive signals in cooperation with a terminal. It is mainly used to realize functions such as physical layer functions, resource scheduling and management, terminal access control, and mobility management. The access network device can be a device that supports wired access or a device that supports wireless access. Exemplarily, the access network equipment may be an access network (access network, AN)/radio access network (radio access network, RAN), which is composed of multiple 5G-AN/5G-RAN nodes. 5G-AN/5G-RAN nodes can be: access point (AP), base station (nodeB, NB), enhanced base station (enhance nodeB, eNB), next-generation base station (NR nodeB, gNB), transmission and reception Point (transmission reception point, TRP), transmission point (transmission point, TP), or some other access node, etc.

The access network device 10 in the embodiment of the present application may configure the direct communication interface resources for the terminal 20, and notify the terminal 20 to enter the RRC-inactive state, or notify the terminal 20 to enter the RRC-active state and adopt the power saving mode.

The AMF network element mainly uses the N1 interface to access the terminal's NAS signaling (including session management (SM) signaling) and the N2 interface to access the RAN signaling to complete the user registration process and the forwarding of SM signaling and Mobility management.

The SMF network element is used to implement procedures related to session establishment, release, and update.

The PCF network element is responsible for user policy management, including both mobility-related policies and PDU session-related policies, such as QoS policies and charging policies.

UDM network element, used to save the user's subscription data.

The AUSF network element is used to implement authentication and authorization service functions, and is responsible for authentication and authorization of terminal access.

DN, the destination of the terminal's PDU session access.

NEF network elements are used to support the security interaction between 3GPP networks and third-party applications. NEF network elements can safely expose network capabilities and events to third parties to enhance or improve application service quality. 3GPP networks can also safely The three parties obtain relevant data to enhance the intelligent decision-making of the network; at the same time, the network element supports the restoration of structured data from the unified database or the storage of structured data in the unified database.

The AF network element is used to implement interaction with the 3GPP core network to provide services, such as influencing data routing decisions, policy control functions, or providing third-party services to the network side.

NRF network element, used to maintain real-time information of all network functions and services in the network. The NRF network element saves the information of the deployed network function (NF) component, such as the identity and network address of the NF component, the identity of the supported network slice, or the information of the data plane instance, etc. The NRF network element provides other NFs Services such as registration and discovery of NF components.

Data network (DN) refers to an operator network that provides data transmission services for terminals, such as IP Multi-media Service (IMS), Internet, etc.

In the embodiments of the present application, the terminal may obtain the direct connection communication interface resource through the network scheduling mode or the terminal autonomous selection mode, so as to send data to other terminals on the PC5 interface communication link.

The so-called network scheduling mode, which can also be called mode 1, refers to the terminal requesting the access network device to configure the terminal to directly connect communication interface resources (for example, PC5 interface) to send data to other terminals.

The so-called terminal autonomous selection mode can also be referred to as mode 2 means that the terminal selects direct communication interface resources that send data to other terminals on the direct communication interface from a pre-configured resource pool.

In the embodiments of this application, the data sent by the terminal on the direct communication interface to other terminals may refer to: control information (such as control information on the PC5 interface, control signaling, etc.) or V2X application layer messages (such as smart Information about the transportation system (Intelligent Transport Systems, ITS) or the wireless access (Wireless Access in Vehicular Environments, WAVE) of the Internet of Vehicles).

As shown in FIG. 3, FIG. 3 shows a schematic structural diagram of a communication device in an embodiment of the present application. For the structure of the terminal and the access network device in the embodiment of the present application, reference may be made to the structure of the communication device shown in FIG. 3. The communication device includes a processor 31, a communication line 34, and at least one communication interface (in FIG. 3, it is only an example that includes the transceiver 33 as an example for illustration).

Optionally, the communication device may further include a memory 32.

The processor 31 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of this application. integrated circuit.

The communication line 34 may include a path to transmit information between the aforementioned components.

The transceiver 33 is used to exchange information with other devices, for example, any device such as a transceiver is used to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), Wireless local area networks (WLAN), etc.

The memory 32 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions The dynamic storage device can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be used by a computer Any other media accessed, but not limited to this. The memory can exist independently and is connected to the processor through the communication line 34. The memory can also be integrated with the processor.

The memory 32 is used to store computer execution instructions for executing the solution of the present application, and the processor 31 controls the execution. The processor 31 is configured to execute computer-executable instructions stored in the memory 32, so as to implement a communication method provided in the following embodiments of the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the processor 31 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 3.

In a specific implementation, as an embodiment, the communication device may include multiple processors, such as the processor 31 and the processor 35 in FIG. 3. Each of these processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).

In the embodiment of this application, the specific structure of the execution body of a communication method is not particularly limited in the embodiment of this application, as long as the program recorded with the code of a communication method of the embodiment of this application can be run according to this application. Only one communication method of the application embodiment can be used for communication. The following embodiments are described by taking a communication method as an example where the execution body is a terminal and an access network device.

It should be pointed out that the various embodiments of the present application can be used for reference or mutual reference, for example, the same or similar steps or similar terms, method embodiments, device embodiments, or system embodiments can all be referred to each other. To limit.

As shown in FIG. 4, FIG. 4 is an interactive embodiment of a communication method provided by an embodiment of the application, and the method includes:

Step 401: The access network device sends resource information to the terminal.

Correspondingly, the terminal receives resource information from the access network device.

Wherein, the resource information may be used to characterize a direct communication interface resource, or the resource information may be used to characterize a direct communication interface resource used to transmit data of the first application.

In a possible embodiment, the above-mentioned data is data of the first application of the terminal, and the direct communication interface resource is used to transmit the data of the first application.

In the embodiments of the present application, the access network device may actively configure the above-mentioned direct communication interface resources for the terminal. Of course, the access network device can also configure the aforementioned direct communication interface resources for the terminal at the request of the terminal. The direct communication interface resource may be the data of the first application configured by the access network device for the terminal. In this case, the direct communication interface resource may be referred to as the exclusive resource of the first application, that is, the direct communication The interface resource is only used to transmit the data of the first application. Of course, the direct communication interface resource can also be shared by the data of the first application and the data of other applications, that is, the direct communication interface resource is a common resource, that is, the terminal can not only transmit the first application on the direct communication interface resource The data can also transmit data from other applications.

Exemplarily, the directly connected communication interface resources allocated by the access network device in the embodiment of the present application to the terminal are wireless resources used for data transmission on the directly connected communication interface, such as specific time slots and specific frequency resources.

For example, the aforementioned direct communication interface resources may be used as periodic resources configured by the access network equipment for the terminal in a semi-static manner.

Exemplarily, the aforementioned direct communication interface resource may be a semi-persistent scheduling (Semi-Persistent Scheduling, SPS) resource allocated by the access network device on the direct communication interface for the terminal. The semi-continuously scheduled direct communication interface resource allocated by the access network device to the terminal enables the terminal to periodically use the direct communication interface resource to send data on the direct communication interface. There is no need to send a request to the access network device before each communication to obtain the directly connected communication interface resource.

It is understandable that the directly connected communication interface resource in the embodiment of the present application may be configured by the access network device in a dynamic configuration mode or a semi-static configuration mode for the terminal, or the directly connected communication interface resource may be an access network device. Previously configured for the terminal, when the terminal needs to use the direct communication interface resource to transmit data, the access network device can activate the direct communication interface resource through the physical downlink control channel (PDCCH) control signaling, so that The terminal can determine that the activated direct communication interface resource can be used to transmit data. The dynamic configuration mode means that each time a terminal sends data, it needs to request and obtain the corresponding direct communication interface resource from the access network device, and the terminal sends data on the corresponding direct communication interface resource. When the terminal has new data that needs to be sent, the terminal needs to request the access network device again for direct connection communication interface resources. Semi-static configuration means that after the terminal requests the direct connection communication interface resource from the access network device, the access network device authorizes the terminal to use a certain resource periodically, for example, taking 100 milliseconds as an interval. The terminal only needs to periodically use the authorized direct communication interface resource to send data, and does not need to request the direct communication interface resource from the access network device every time.

The above-mentioned data in the embodiment of the present application may be transmitted on the direct connection communication interface resource obtained by the terminal through the network scheduling mode. Of course, the data in the embodiments of this application can also be transmitted on the direct communication interface resources acquired by the terminal through the terminal autonomous selection mode, but the power consumption of the direct communication interface resources acquired by the terminal in the terminal autonomous selection mode for data transmission is higher than The power consumption of the terminal to transmit data on the direct communication interface resource acquired in the network scheduling mode.

The aforementioned direct communication interface resources in the embodiments of the present application may be configured by the access network device for the terminal when the terminal and the access network device maintain the RRC-active state on the Uu interface. In this way, when the terminal enters the RRC-inactive state from the RRC-active state or the terminal adopts the power saving mode in the RRC-active state, the terminal can still use the direct communication interface resource to transmit the data of the first application.

For example, the access network device may be the access network device 10 in FIG. 1, and the terminal may be the terminal 20 in FIG. 1.

Step 402: The terminal transmits data through the direct connection communication interface resource.

Among them, as an example, the terminal is in a radio resource control RRC-inactive state. Or another example, the terminal is in the RRC-active state and the terminal adopts the power saving mode. In other words, when the terminal is in the RRC-active state and adopts the power saving mode, the terminal can still transmit data through the direct communication interface resources.

For example, the terminal may adopt long discontinuous reception (DRX) technology on the direct communication interface, so that the terminal is in a power saving mode.

On the one hand, the direct communication interface resources in the embodiments of the present application can only be used when the terminal is in the radio resource control RRC-inactive state, or used when the terminal is in the RRC-active state and adopts the power saving mode. In other words, the The direct communication interface resource is specifically configured for the terminal, and is used for the terminal to transmit data in the radio resource control RRC-inactive state, or for the terminal to transmit data in the RRC-active state, and the terminal adopts the power saving mode to transmit data.

On the other hand, the direct communication interface resource can not only transmit data when the terminal is in the radio resource control RRC-inactive state, or when the terminal is in the RRC-active state and the terminal adopts the power saving mode, the direct communication interface resource can also be The terminal transmits data when it is in the RRC-active state. For example, when the terminal is in the RRC-active state, regardless of whether the terminal adopts the power saving mode, the terminal can use the direct communication interface resource to transmit data that needs to be transmitted on the direct communication interface.

In a possible implementation manner, step 402 in the embodiment of the present application can be implemented in the following manner: the terminal uses the direct communication interface resource to transmit data to other terminals on the PC5 interface communication link with other terminals.

In the embodiment of the present application, if the terminal maintains a Uu interface connection with the access network device or the terminal maintains an RRC connection with the access network device, the terminal is in the RRC-activated state. When the terminal is in the RRC-activated state, the access network device can configure direct communication interface resources for the terminal. If the terminal and the access network device do not maintain the Uu interface connection or the RRC connection between the terminal and the access network device is released, the terminal is in the RRC-inactive state. Here are unified descriptions, and will not be repeated in the following. The power consumption generated by the power saving mode when the terminal is in the RRC-active state is lower than the power consumption when the terminal is not used in the power saving mode when the terminal is in the RRC-active state.

It is understandable that in the embodiments of this application, the terminal can enter the RRC-inactive state from the RRC-active state under the configuration of the access network device, or the terminal can change from the RRC-active state to the normal state under the configuration of the access network device. The mode (for example, the non-power saving mode) enters the power saving mode of the RRC-active state, which is not limited in the embodiment of the present application.

The embodiment of the present application provides a communication method in which a terminal receives resource information from an access network device. Since the resource information is used to characterize the resources of a directly connected communication interface, then when the terminal is in a radio resource control RRC-inactive state , Or when the terminal is in the RRC-activated state and the terminal adopts the power saving mode, data can be transmitted on the direct communication interface resource. In this way, for the terminal in the RRC-inactive state, it is possible to avoid the power consumption caused by the terminal adopting the terminal independent selection resource mode to obtain the direct connection communication interface resource in order to transmit data. For the terminal in the RRC-active state and adopts the power-saving mode, the power consumption generated when it transmits data on the direct communication interface resources can still be lower than the power generated by the terminal in the RRC-active state that does not adopt the power-saving mode. Consumption. Therefore, the method provided by the embodiment of the present application can reduce the power consumption of the terminal transmitting data on the direct communication interface.

In a possible embodiment, before step 401, the above method may further include: the access management network element sends the preferred scheduling mode of the terminal to the access network device.

Correspondingly, the access network device receives the preferred scheduling mode from the terminal accessing the management network element.

As an example, the access management network element may determine the preferred scheduling mode of the terminal from the subscription information of the terminal, or the access management network element may determine the preferred scheduling mode of the terminal based on the request of the terminal. Or the access management network element can independently determine the preferred scheduling mode of the terminal on the directly connected communication interface. It is understandable that the preferred scheduling mode of the terminal in the embodiment of the present application may refer to the preferred scheduling mode of the terminal on the directly connected communication interface.

As an example, the preferred scheduling mode of the terminal may be a network scheduling mode.

Based on this, the access network device sending resource information to the terminal includes: the access network device sends the resource information to the terminal according to the preferred scheduling mode of the terminal.

As a specific implementation, the access network device sends resource information to the terminal according to the preferred scheduling mode of the terminal, including: the access network device allocates direct communication interface resources to the terminal in the scheduling mode indicated by the priority scheduling mode, and then connects The network access device sends resource information used to characterize the resources of the directly connected communication interface to the terminal.

As an optional example, the preferred scheduling mode is the preferred scheduling mode corresponding to the first application. In other words, the preferred scheduling mode is the preferred scheduling mode of the first application of the terminal on the directly connected communication interface. It should be understood that for the same terminal, different applications may have different corresponding preferred scheduling modes on the direct communication interface.

In a possible embodiment, before step 402, the above method may further include: within a preset time, if there is no data transmission on the Uu interface between the terminal and the access network device, the access network device The terminal sends the first notification message, and correspondingly, the terminal receives the first notification message from the access network device.

Wherein, the first notification message is used to configure the terminal to enter the RRC-inactive state. In this way, it is convenient for the terminal to release the RRC connection between the terminal and the access network device according to the first notification message, so as to enter the RRC-inactive state from the RRC-active state. However, when the terminal is in the RRC-inactive state, the terminal can maintain a connection with the core network, that is, the terminal is still in the CM-Connected state (Connection Management).

It can be understood that when the terminal receives the second notification message, the terminal is in the RRC-activated state, in other words, there is an RRC connection between the terminal and the access network device, and the configured DRX parameters enable the terminal to obtain the effect of saving power.

In a possible embodiment, before step 402, the above method may further include: within a preset time, if there is no data transmission on the Uu interface between the terminal and the access network device, the access network device The terminal sends the second notification message, and correspondingly, the terminal receives the second notification message from the access network device.

Wherein, the second notification message is used to instruct the terminal to adopt the power saving mode in the RRC-activated state (or the connection state between the terminal and the access network equipment maintained on the Uu interface). In this way, after receiving the second notification message, the terminal can use the power saving mode in the RRC-active state.

In a possible embodiment, before step 402, the foregoing method may further include: the terminal determining that the terminal can use the foregoing direct communication interface resource based on the network scheduling mode configured by the access network device for the terminal to transmit data.

In an example, the terminal may determine, according to predefined or pre-configured information, that the terminal can use the aforementioned direct communication interface resource based on the network scheduling mode configured by the access network device for the terminal to transmit data.

In another example, the terminal may determine that the terminal can use the direct communication interface resource based on the network scheduling mode configured by the access network device for the terminal to transmit data according to the instruction of the access management network element or the access network device.

As a specific implementation, the terminal can determine that the terminal can use the direct communication interface resource based on the network scheduling mode configured by the access network device for the terminal to transmit the data of the first application when the terminal is in the RRC-inactive state.

As another specific implementation: the terminal can determine that the terminal can use the above-mentioned network scheduling mode-based direct communication interface resources configured by the access network device for the terminal to transmit the first application when the terminal is in the RRC-active state and in the power saving mode The data.

Figure 5 shows another embodiment of the present application. This embodiment includes steps 501 to 512, where step 507 can refer to the above step 401, which will not be repeated here. Step 509 is a possibility of the above step 402 The way to achieve.

Among them, steps 501 to 506, step 508, step 510, step 511, and step 512 are optional steps.

Step 501: The terminal sends an identifier of at least one service to the access management network element.

Correspondingly, the access management network element receives the identification of at least one service from the terminal.

Wherein, the identifier of at least one service is the service requested by the terminal. The at least one service may be a service transmitted through a direct communication interface, for example, a V2X service. Correspondingly, the at least one service is used to indicate the service that the terminal requests to be transmitted through the direct communication interface, and the at least one service includes the first application.

As a possible example, the direct communication interface may be a PC5 interface.

It is understandable that the data of at least one service in the embodiment of the present application can be transmitted on the direct communication interface resource acquired by the terminal in the network scheduling mode. In other words, the data of at least one service can also be transmitted on the access network device based on network scheduling. The mode is transmission on the direct connection communication interface resource configured by the terminal. The at least one service is a service for the terminal to request data transmission.

As a possible implementation manner, step 501 in the embodiment of the present application may be implemented in the following manner: the terminal sends a first message to the access management network element, and correspondingly, the access management network element receives the first message from the terminal. The first message carries the identifier of at least one service. For example, the first message may be a packet data unit (packet data unit, PDU) session (session) connection establishment (PDU) session establishment message or a service request (service request) message.

Exemplarily, the access management network element may be an AMF network element.

As an example, the first message may also carry indication information used to indicate that the at least one service is a service requested by the terminal.

Step 502: The access management network element sends the identification of the allowed service of the terminal to the terminal.

Correspondingly, the terminal receives the identifier of the permitted service from the terminal that accesses the management network element.

The permitted service is a service in which the access management network element authorizes the terminal to transmit data on the directly connected communication interface, and the permitted service includes the first application, in other words, the first application belongs to the permitted service of the terminal.

Specifically, step 502 may be implemented in the following manner: access to the management network element to obtain the subscription information of the terminal. The access management network element sends the terminal's allowed service identification to the terminal according to the subscription information.

As an example, the access management network element sending the identifier of the permitted service of the terminal to the terminal according to the subscription information includes: the access management network element obtains the identifier of the permitted service of the terminal from the subscription information of the terminal. The access management network element sends the identification of the allowed service of the terminal to the terminal.

In a possible implementation manner, before step 502, the method provided in the embodiment of the present application may further include: accessing the management network element to determine the identifier of the permitted service of the terminal.

As a possible implementation manner, the access management network element can determine the identifier of the permitted service in the following manner: the access management network element obtains the identifier of the permitted service of the terminal from the contract information of the terminal. For example, the access management network element may obtain the subscription information of the terminal from the UDR network element or the UDM network element, and the subscription information includes the identifier of the allowed service of the terminal.

As another possible implementation manner, the access management network element determining the permitted service can be implemented in the following manner: the access management network element determines the permitted service of the terminal from at least one service.

It should be understood that the permitted services of the terminal in the embodiment of the present application may be all or part of at least one of the services. For example, at least one business is business 1, business 2, and business 3, and the permitted business can be business 1 and business 2. Therefore, the first application may be one or more of Service 1 and Service 2.

The first application in the embodiment of the present application may represent all services in the permitted services, or represent part of the services in the permitted services, for example, a service, which is not limited in the embodiments of the present application.

As an example, the data of the permitted service in the embodiment of the present application may be transmitted on the direct communication interface resource acquired by the terminal in the network scheduling mode. Of course, the data of the permitted service can be transmitted on the direct connection communication interface resource acquired by the terminal in the terminal autonomous selection mode.

It should be noted that the access management network element in the embodiment of the present application can actively send the identifier of the allowed service to the terminal. In this case, step 501 can be omitted, that is, step 501 is an optional step. For example, when the terminal indicates to the access management network element that the terminal has the ability to transmit PC5 service data on the PC5 interface during the registration procedure (Registration Procedures), the access management network element can send the identification of the allowed service to the terminal . The data of the PC5 service includes the data of the permitted service.

Of course, the access management network element in the embodiment of the present application may also decide whether to send the identifier of the allowed service to the terminal at the request of the terminal. In this case, step 501 needs to be included before step 502. Specifically, if the access management network element allows the terminal to use the directly connected communication interface resources acquired in the network scheduling mode to transmit data of the allowed service, the access management network element sends the identification of the allowed service to the terminal. If the access management network element does not allow the terminal to use the directly connected communication interface resources acquired in the network scheduling mode to transmit data of the allowed service, the access management network element does not send the identification of the allowed service to the terminal.

It is understandable that the identifier of the permitted service sent by the access management network element to the terminal is the identifier of the service that the access management network element allows the terminal to use the direct communication interface resource acquired in the network scheduling mode to transmit data. The identifier of the permitted service sent by the access management network element to the terminal may be the identifier of all the services or the identifiers of part of the services among the identifiers of at least one service requested by the terminal, which is not limited in the embodiment of the present application. In other words, the terminal requests to use the network scheduling mode to transmit service 1 data and service 2 data. The access management network element can allow the terminal to use the network scheduling mode to transmit service 1 data and service 2 data. At this time, the access management network element sends the service ID and the service 2 ID to the terminal as the ID of the allowed service. Of course If the access management network element allows the terminal to use the network scheduling mode to transmit the data of the service 1, the access management network element sends the identifier of the service 1 to the terminal as the identifier of the allowed service.

As a possible implementation, the identity of the allowed service can be determined by the access management network element according to the terminal's subscription information and the identity of at least one service from the terminal, or the access management network element can be determined based on the terminal's subscription information And the ability of the terminal is determined. For example, the identifier of the permitted service is the intersection of the identifier of the service in the subscription information and the identifier of at least one service.

As a possible implementation, step 502 in the embodiment of the present application may be implemented in the following manner: the access management network element sends a sixth message to the terminal. Correspondingly, the terminal receives the sixth message from the access management network element. Wherein, the sixth message includes the identifier of the allowed service. The sixth message is used to indicate that the terminal is allowed to use the direct communication interface resource acquired in the network scheduling mode to transmit the data of the allowed service. Of course, the sixth message may also carry indication information x, which is used to indicate that the terminal is allowed to use the direct communication interface resource acquired in the network scheduling mode to transmit the data of the allowed service. For example, the sixth message may be a service acceptance message.

Step 503: The terminal sends a first message to the access management network element.

Correspondingly, the access management network element receives the first message from the terminal.

Wherein, the first message contains a first parameter, and the first parameter is used to characterize the terminal request to use the network scheduling mode to transmit data on the direct communication interface, or the first parameter is used to characterize the terminal request to use the network on the direct communication interface The scheduling mode transmits data of at least one service. The access management network element determines whether the terminal can transmit data on the direct communication interface using the direct communication interface resource acquired in the network scheduling mode according to the first parameter and the contract information of the terminal.

It is understandable that the subscription information of the terminal includes not only the identification of the allowed service of the terminal, but also information indicating whether the terminal is allowed to use the direct communication interface resource acquired in the network scheduling mode to transmit data.

If the contract information of the terminal indicates that the terminal is allowed to use the direct communication interface resources obtained in the network scheduling mode to transmit data on the direct communication interface, the access management network element sends authorization information to the terminal. The authorization information is used to indicate that the terminal is allowed to be in the direct connection The direct connection communication interface resource obtained by the network scheduling mode is used to transmit data on the connection communication interface.

If the contract information of the terminal indicates that the terminal is not allowed to use the direct communication interface resource acquired in the network scheduling mode to transmit data on the direct communication interface, the access management network element does not send authorization information to the terminal. Alternatively, the access management network element sends prohibition indication information to the terminal, where the prohibition indication information is used to indicate that the terminal is forbidden to use the direct communication interface resource acquired in the network scheduling mode to transmit data on the direct communication interface. If the terminal does not receive the authorization information, or the terminal receives the prohibition indication information, the terminal will not subsequently transmit data on the direct communication interface using the direct communication interface resources acquired through the network scheduling mode.

It should be understood that, on the one hand, the data in the "terminal request to use the network scheduling mode to transmit data on the direct communication interface" can refer to "general data", that is, the data can be not only PC5 service data, but also PC5 service data. Other data. On the other hand, the data in "the terminal requests to use the network scheduling mode to transmit data on the direct communication interface" can refer to "specified data". For example, the specified data may be PC5 service data. At the same time, the specified data may also be data of other services, for example, direct communication is used to send text messages, audio or video data. The data may belong to the data of permitted services, which is not limited in the embodiment of the present application.

It is understandable that if the data in the "terminal request to use the network scheduling mode to transmit data on the PC5 interface" can refer to the "specified data", if the terminal does not receive the authorization information, or the terminal receives the prohibition instruction information, then The terminal will not subsequently use the direct communication interface resource acquired in the network scheduling mode to transmit the "specified data" on the direct communication interface, but the terminal can use the direct communication interface resource acquired in the network scheduling mode to communicate in the direct connection. Data other than "specified data" is transmitted on the interface.

Exemplarily, the first message may be a service request message. In a possible implementation manner, the identifier of at least one service is carried in the first message. It should be understood that if the first parameter and the identifier of the at least one service can be carried in the same message, the first message may be used to indicate that the terminal requests to use the network scheduling mode to transmit data of at least one service on the direct communication interface. If the first parameter and the identification of the at least one service are carried in different messages, on the one hand, this step 503 may be before step 501, that is, the terminal requests the access management network element to use the network scheduling mode to transmit on the direct communication interface For data, when the access management network element is allowed to use the network scheduling mode to transmit data on the directly connected communication interface, the terminal sends at least one service identifier to the access management network element. On the other hand, this step 503 may be located after step 501, that is, the terminal first sends the identification of at least one service to the access management network element. After obtaining the identification of the authorized service authorized by the access management network element, the terminal sends the The access management network element requests to use the network scheduling mode to transmit data on the directly connected communication interface.

In a possible implementation manner, the first message further includes the first link identifier. The first link identifier indicates a communication link used for the terminal to transmit data on the directly connected communication interface, or the first link identifier indicates a communication link used for the terminal to transmit data of the first application on the directly connected communication interface . For example, the first link identifier may be a source address and a destination address. The source address is the layer 2 address of the terminal, and the destination address is the layer 2 address of the receiver that receives the data of the first application (for example, the layer 2 address of the other terminal described above). The access management network element uses the first link identifier to manage the first link (for example, the communication link through which the terminal transmits data on the directly connected communication interface). Exemplarily, the access management network element may use the first link identifier to instruct the terminal to stop sending data on the first link, or instruct the access network device to stop allocating direct communication interface resources for the first link, or access management The network element indicates that the direct communication interface resource configured by the access network device for the terminal is for the first link. At this time, the terminal can transmit the direct communication interface resource configured for the terminal by the access network device for the first link. data.

Step 504: The terminal sends a second message to the access management network element.

Correspondingly, the access management network element receives the second message from the terminal.

Wherein, the second message includes a first quality of service parameter, and the first quality of service parameter is a quality of service parameter used by the terminal to request data transmission on the directly connected communication interface.

It is understandable that the second message may include indication information y, and the indication information y is used to indicate the quality of service parameters used by the terminal to request data transmission on the directly connected communication interface.

It is understandable that the first quality of service parameter is the quality of service parameter of the directly connected communication interface that has not been authorized by the network side.

It is understandable that the second message and the first message may be the same message. Specifically, if the first quality of service parameter is sent to the access management network element after the terminal obtains the identifier of the permitted service, the first quality of service parameter is the data that the terminal requests to transmit the permitted service on the directly connected communication interface. The quality of service parameters used. For example, the second message may be a PDU session establishment request message or a PDU session modification request message.

Through step 504, the access management network element can send authorized service quality parameters to the terminal, and the authorized service quality parameters are authorized by the policy control network element. In addition, through step 504, the access management network element can also send instruction information to the terminal or the access network device, which is used to indicate that the resource allocation mode of the direct communication interface resource for transmitting the data of the first application is the network scheduling mode. In addition, through step 504, the access management network element may also send indication information to the access network device, the indication information is used to indicate to the access network device when the terminal is in the RRC-inactive state, or the RRC-active state and in the power saving mode At this time, the terminal is allowed to continue to use the direct communication interface resources acquired in the network scheduling mode to transmit data on the direct communication interface.

Step 505: The access management network element sends a third message to the terminal.

Correspondingly, the terminal receives the third message from the access management network element.

Wherein, the third message includes the authorized service quality parameter, and the authorized service quality parameter is used for the terminal to transmit data on the directly connected communication interface. Or the authorized service quality parameter is the service quality parameter of the terminal authorized by the network side to transmit data on the directly connected communication interface.

For example, the access management network element determines the authorized service quality parameter according to the first service quality parameter requested by the terminal and the subscription data of the terminal. For example, the authorized quality of service parameter may be the first quality of service parameter.

The service quality parameters involved in the embodiments of this application include resource type (resource Type), for example, the resource type can be: guaranteed bit rate (guaranteed bit rate, GBR), delay critical GBR or non-guaranteed bit rate (Non-GBR) ；Priority level; Data delay (packet delay budget); Data error rate (packet error rate); Calculation window (Averaging window), for GBR resource type and delay-critical GBR resource type; Maximum data burst (Maximum Data Burst Volume), for delay-critical GBR resource types; PC5 QoS flow rate (PC5 Flow Bit Rates); PC5 connection aggregation rate (PC5 Link Aggregated Bit Rates); range (range); resource allocation mode (resource allocation mode) ).

Step 506: The terminal sends a message for requesting direct connection communication interface resources to the access network device. Correspondingly, the access network device receives a message for requesting direct connection communication interface resources from the terminal.

Specifically, the terminal requests the directly connected communication interface resource corresponding to the first application from the access network device. At this time, the direct communication interface resource configured by the access network device for the terminal is for the first application. Correspondingly, the above-mentioned message for requesting direct communication interface resources carries the identifier of the first application.

As an example, step 506 in the embodiment of the present application may be specifically implemented in the following manner: the terminal sends a first request message to the access network device, and correspondingly, the access network device receives the first request message from the terminal. The first request message is used to request direct communication interface resources. Exemplarily, when the terminal is in the RRC-activated state, the terminal sends the first request message to the access network device. It is understandable that if the first request message also carries the first link identifier, the direct communication interface resource requested by the terminal from the access network device is also associated with the first link identifier, which means that the direct communication interface resource Used to transmit data for the first link.

In a possible implementation manner, before step 506, the method provided in this embodiment of the present application may further include: the terminal determines that when the terminal is in the RRC-inactive state, it can use the direct communication interface resources configured by the access network device for the terminal Transmit data on the directly connected communication interface, or the terminal determines that when the terminal is in the RRC-active state and in the power saving mode, the terminal can use the direct communication interface resources configured by the access network device for the terminal to transmit data on the directly connected communication interface . The so-called terminal being able to use the direct connection communication interface resources configured by the access network equipment for the terminal to transmit data on the direct connection communication interface is equivalent to the terminal determining that it can use the network scheduling mode to transmit data on the direct connection communication interface.

It is understandable that, in the embodiment of the application, the terminal determines that when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and is in the power saving mode, the terminal can use the direct communication interface configured by the access network device for the terminal. In the case of resource transmission data, the terminal then requests direct communication interface resources from the access network device, which can avoid when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and in the power saving mode, but the terminal does not It is impossible to use the direct connection communication interface resources configured by the access network equipment for the terminal to transmit data on the direct connection communication interface, and resource waste caused by blindly applying for resources.

In one example, the access network device uses an implicit way to indicate that when the terminal is in the RRC-inactive state, the terminal can use the direct communication interface resources configured by the access network device for the terminal to transmit data on the direct communication interface, or connect The network access device uses an implicit way to indicate that when the terminal is in the RRC-active state and in the power saving mode, the terminal can use the direct communication interface resources configured by the access network device for the terminal to transmit data on the direct communication interface. For example, the direct communication interface resources configured by the access network equipment for the terminal are resources in a specific location, and the resources in the specific location can be used when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and is in the province. In the electric mode, the data of the first application is transmitted on the direct communication interface, or the data is transmitted on the direct communication interface. In this way, if the terminal determines that the resource configured by the access network device for the terminal is a resource in a specific location, it can use the access when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and in the power saving mode. The network equipment transmits data for the directly connected communication interface resources configured for the terminal.

In another example, the access network device uses an explicit way to indicate that when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and in the power saving mode, the terminal can use the direct connection configured by the access network device for the terminal. The communication interface resource transmits data. For example, the access network device executes step 507. This is convenient for the terminal to determine according to the first indication information that when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and in the power saving mode, the terminal can use the direct communication interface resources configured by the access network device for the terminal to transmit data .

Step 507: The access network device sends resource information to the terminal.

Correspondingly, the terminal receives resource information from the access network device.

For the description of step 507, reference may be made to the description of step 401, which will not be repeated here.

It should be noted that if the terminal requests the access network device to configure the direct connection communication interface resource for the terminal and also carries the first link identifier, the direct connection communication interface resource configured by the access network device for the terminal may also be connected to the first link. Identify the association. The so-called association of the directly connected communication interface resource with the first link identifier may indicate that the destination of the data to be transmitted by the directly connected communication interface resource is the destination of the communication link indicated by the first link identifier.

Step 508: The access network device or the access management network element sends the first indication information to the terminal.

Correspondingly, the terminal receives the first indication information from the access network device or the access management network element.

Wherein, the first indication information is used to indicate that the terminal is allowed to use the direct communication interface resource based on the network scheduling mode to transmit the data of the first application when the terminal is in the RRC-inactive state. Alternatively, the first indication information is used to indicate that when the terminal is allowed to be in the RRC-activated state and in the power saving mode, the direct communication interface resource based on the network scheduling mode is used to transmit the data of the first application.

Correspondingly, the terminal determines that when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and in the power saving mode, it can use the direct communication interface resource based on the network scheduling mode to transmit the first application on the direct communication interface The data includes: the terminal determines according to the first indication information that when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and is in the power saving mode, the direct connection based on the network scheduling mode can be used on the direct connection communication interface The communication interface resource transmits the data of the first application.

Correspondingly, when the terminal receives the first indication information, step 402 in the embodiment of the present application can be implemented in the following manner: when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and in the power saving mode When the terminal transmits the data of the first application on the direct communication interface resource according to the first indication information, it includes: the terminal determines according to the first indication information when the terminal is in the RRC-inactive state, or the terminal is in the RRC-active state and When the data of the first application is transmitted on the direct communication interface when in the power saving mode, the terminal uses the resources of the direct communication interface to transmit the data of the first application.

In a possible embodiment, the method provided in the embodiment of the present application may further include: the terminal receives permission indication information from the access management network element, where the permission indication information is used to indicate that the terminal is allowed to transmit data on the directly connected communication interface Through the permission indication information, it is convenient for subsequent terminals to transmit data on the directly connected communication interface.

In a possible embodiment, taking the data involved in the embodiment of this application as the data of the first application, and the direct communication interface being the PC5 interface as an example, the method provided in the embodiment of this application may further include before step 508 : The terminal generates a PC5 interface quality of service flow (PC5 QoS Flow) corresponding to the first application. The PC5 interface quality of service flow includes a PC5 interface packet filter. Among them, a parameter value in the PC5 interface packet filter is the identifier of the first application. The terminal associates the data of the first application with the PC5 interface quality of service flow. Among them, the PC5 interface packet filter is used to determine the data of the first application.

As a specific implementation, the terminal determines the data of the first application according to the PC5 interface packet filter, including: the terminal obtains one or more data to be sent, and the terminal associates the application identifier corresponding to the one or more data to be sent with the PC5 The identification of the first application in the interface packet filter is compared, and if the application identification corresponding to the target data in one or more to-be-sent data is the same as the identification of the first application, the terminal determines that the target data is the identification of the first application data. The so-called terminal associating the data of the first application with the PC5 interface quality of service flow may refer to: the terminal uses the PC5 interface quality of service flow to transmit the data of the first application on the resources configured by the access network device for the terminal.

In a possible implementation manner, before the aforementioned terminal generates the PC5 interface quality of service flow corresponding to the first application, it can be achieved by obtaining the mapping relationship between the first application and the PC5 interface quality of service flow through the following manner 1 or manner 2:

Manner 1. The terminal receives the PC5 interface quality of service flow or configuration information corresponding to the first application from the policy control network element. Among them, the configuration information is used to generate the PC5 interface quality of service flow corresponding to the first application. The terminal generates the PC5 interface quality of service flow corresponding to the first application according to the configuration information. Among them, the parameter of the PC5 interface quality of service flow may be the PC5 interface quality of service flow identifier (PFI, PC5 QoS Flow Identifier).

Exemplarily, the policy control network element may be a PCF network element, and the PC5 interface quality of service flow or configuration information corresponding to the first application may be actively sent by the policy control network element to the terminal. Of course, the policy control network element may also send configuration information or the quality of service flow of the PC5 interface corresponding to the first application to the terminal at the request of the terminal. In the embodiment of the present application, the priority of the PC5 interface quality of service flow or configuration information corresponding to the first application from the policy control network element is higher than the priority of the PC5 interface quality of service flow corresponding to the first application pre-configured at the terminal.

Manner 2: The terminal generates the PC5 interface quality of service flow corresponding to the first application according to the pre-configured parameters. The terminal is configured in advance with the PC5 service quality parameters that can be used by the first application in the SIM card or the built-in storage of the terminal. The terminal generates the corresponding PC5 interface quality of service flow through the preset PC5 interface quality of service parameters, and writes the identification of the first application into the PC5 interface packet filter of the PC5 interface quality of service flow.

Step 509: When the terminal is in the RRC-inactive state, or when the terminal is in the RRC-active state and in the power saving mode, the terminal transmits the first instruction on the direct communication interface resource configured for the terminal by the access network device according to the first indication information. One application data.

When the data transmission of the first application ends, in order to prevent the access network equipment from wasting the direct connection communication interface resources configured for the terminal based on the network scheduling mode, the access network equipment can release in time the direct connection communication interface resources configured for the terminal. The direct connection communication interface resource for transmitting the data of the first application on the interface. Based on this, in a possible embodiment, as shown in FIG. 5, the method provided in this embodiment of the present application may further include after step 509:

Step 510: The terminal sends a fourth message to the access management network element.

Correspondingly, the access management network element receives the fourth message from the terminal.

Wherein, the fourth message includes a second parameter, and the second parameter is used to characterize that the terminal stops transmitting data on the directly connected communication interface. Or the second parameter is used to characterize that the terminal has completed the data transmission of the first application. Or the second parameter is used to characterize that the terminal wishes to stop transmitting data on the directly connected communication interface. Or the second parameter is used to characterize that the terminal wishes to stop transmitting the data of the first application on the directly connected communication interface.

Exemplarily, the fourth message may be a service request message.

Step 511: The access management network element instructs the access network device to release the directly connected communication interface resources of the terminal according to the second parameter.

For example, the access management network element sends release instruction information to the access network device, where the release instruction information is used to instruct the access network device to release the direct communication interface resources of the terminal. Or the release indication information is used to instruct the terminal to stop using the direct communication interface resource to transmit the data of the first application on the direct communication interface, or the first indication information is used to indicate that the terminal has completed the data transmission of the first application.

Step 512: When the terminal stops transmitting data through the direct communication interface resource, the access network device releases the direct communication interface resource.

Specifically, step 512 may be implemented in the following manner: the access network device releases the aforementioned direct communication interface resources according to the release instruction information. Or step 512 can be replaced in the following manner: the terminal has completed the data transmission of the first application, or the access network device needs to release the direct communication interface resource configured for the terminal, then the access network device releases the direct communication interface resource. Specifically, the access network device receives instruction information from the access management network element, where the instruction information is used to indicate that the terminal has completed the data transmission of the first application. Specifically, the need for the access network device to release the direct communication interface resources configured for the terminal includes: the access network device determines that it needs to release the direct communication interface resources configured for the terminal according to the instruction information from the access management network element.

As a possible implementation, after the access network device releases the direct communication interface resources configured for the terminal in the embodiment of the present application, the access network device may also send a third notification message to the terminal, where the third notification message is used for It indicates that the direct communication interface resource configured for the terminal is released, so that it is convenient for the terminal to determine that the direct communication interface resource is released according to the third notification message.

In a possible implementation manner, the method provided in the embodiment of the present application may further include: the terminal sends a third parameter to the access management network element, and correspondingly, the access management network element receives the third parameter from the terminal. The third parameter is used to characterize that the terminal requests to use the network scheduling mode on the direct communication interface. The third parameter facilitates the access management network element to determine that the resource scheduling mode for the terminal to transmit data on the directly connected communication interface is the network scheduling mode.

In a possible implementation manner, the method provided in the embodiment of the present application may further include: the terminal receives second indication information, the second indication information is used to indicate that the terminal is allowed to be in the RRC-activated state and use the power saving mode based on The direct connection communication interface resource of the network scheduling mode transmits data. The terminal transmitting data through the direct connection communication interface resource includes: the terminal transmits the above data through the direct connection communication interface resource according to the second instruction information.

As an example, the terminal transmits the above-mentioned data through the direct communication interface resource according to the second indication information, including: the terminal determines according to the second indication information that the access management network element allows the terminal to be in the RRC-active state and adopts the power saving mode The direct connection communication interface resource based on the network scheduling mode is used to transmit data, and then the terminal transmits the above-mentioned data through the direct connection communication interface resource.

It is worth noting that if the second parameter is used to characterize that the terminal wants to stop transmitting data on the direct communication interface or the second parameter is used to characterize that the terminal stops transmitting data on the direct communication interface, the access management network element can instruct the connection The network access device releases all directly connected communication interface resources for the terminal. If the second parameter is used to characterize that the terminal wishes to stop transmitting data of the first application on the direct communication interface or the second parameter is used to characterize that the terminal stops transmitting data of the first application on the direct communication interface, then access the management network element The access network device may be instructed to release the direct connection communication interface resource configured for the first application, but other data transmission on the direct connection communication interface does not stop.

As shown in Figure 6, Figure 6 takes the terminal as the UE, the access network equipment as the (R)AN equipment, the access management network element as the AMF network element, and the direct communication interface as the PC5 interface as an example. This application is described in detail. An embodiment provides a communication method, which includes:

Step 601: The UE sends a registration request (registration request) message to the AMF network element through the (R)AN device.

Correspondingly, the AMF network element receives the registration request message from the UE.

Wherein, the registration request message may carry a first mode indicator (indicator). The registration request message is used to request registration of the UE to the core network.

The first mode indication is used to indicate that the UE requests to transmit PC5 service data in the network scheduling mode on the PC5 interface, or the first mode indication is used to indicate that the UE has the ability to transmit PC5 service data on the PC5 interface.

For example, the PC5 service may be a VRU service, and the PC5 service may also be another service that uses a PC5 interface for communication, such as a service for direct communication between terminals.

Optionally, the registration request message may also carry the identity of the UE.

After step 601, the UE may perform other steps in the registration procedure with other network elements in the core network.

Step 602: The AMF network element sends a registration request message to the UDM network element.

Correspondingly, the UDM network element receives the registration request message from the AMF network element.

Step 603: The UDM network element sends a registration response (registration response) message to the AMF network element.

Correspondingly, the AMF network element receives the registration response message from the UDM network element.

The registration response message may carry the subscription information of the UE, where the subscription information of the UE includes one or more of the following information: first capability (capability) information, and authorization indication information. Wherein, the first capability information indicates that the UE has the capability of transmitting PC5 service data on the PC5 interface. The authorization indication information is used to indicate that the UE is allowed to use the direct communication interface resources obtained in the network scheduling mode to transmit data of the PC5 service on the PC5 interface.

Step 604: The AMF network element selects a PCF network element that provides services for the UE.

Step 605: The AMF network element and the PCF network element execute an access and mobility policy (Access and Mobility Policy, AM Policy) policy connection establishment/modification (association Establishment/Modification) process.

After step 605, the UE and other network elements in the core network perform other steps in the registration procedure.

Step 606: The AMF network element sends a registration accept message to the UE. Correspondingly, the UE receives the registration accept message from the AMF network element.

Wherein, the registration acceptance message includes authorization instruction information.

The UE can determine through the authorization indication information that the UE can use the direct communication interface resources acquired in the network scheduling mode to transmit the data of the PC5 service on the PC5 interface.

The purpose of the embodiment shown in FIG. 6 is that the UE determines through the registration process that the UE can use the direct communication interface resources acquired in the network scheduling mode on the PC5 interface to transmit PC5 service data.

Wherein, the registration request message in the embodiment shown in FIG. 6 may correspond to the first message in the foregoing embodiment, and the first mode indication may correspond to the foregoing first parameter or third parameter.

As shown in Figure 7, Figure 7 takes the terminal as the UE, the access network device as the (R)AN device, the access management network element as the AMF network element, the PC5 service includes at least one service, and the direct communication interface is the PC5 interface as an example. , Describes a method for UE to transmit PC5 service data in a low-power consumption manner, and the method includes:

Step 701: The UE enters the mode of transmitting the data of the PC5 service.

As a specific implementation, step 701 can be implemented in the following manner: the upper layer invokes an AT command (AT command) between the upper layer and the V2X layer to trigger the UE to enter the mode of transmitting PC5 service data. For example, the upper layer may be the application layer of the UE, and the upper layer and the V2X layer may be located inside the UE.

Step 702: The UE sends a service request message (service request message) to the AMF network element through the (R)AN device.

Correspondingly, the AMF network element receives the service request message from the terminal through the (R)AN device.

Among them, the service request message carries the request of the PC5 service, the identifier of at least one service, and the quality of service parameters (requested PC5 QoS parameters) that the UE requests to transmit data on the PC5 interface 1, but does not carry the PDU session list (list of PDU Session) .

Among them, the PC5 service request is used to indicate that the UE requests to transmit PC5 service data on the PC5 interface. The service request message does not carry the list of PDU Session, which is used to indicate that the purpose of the terminal sending the service request message is not because there is data to be sent on the Uu.

For example, the requested PC5 QoS parameters can include one or more of the following parameters:

-PC5 5G QoS Identifier (PQI);

-Resource Type, for example, the resource type can be: guaranteed bit rate (guaranteed bit rate, GBR), delay critical GBR (delay critical GBR) or non-guaranteed bit rate (Non-GBR);

-Priority level;

-Data delay (packet delay budget);

-Data error rate (packet error rate);

-Averaging window, for GBR resource type and delay-critical GBR resource type;

-Maximum Data Burst Volume, for the delay-critical GBR resource type;

-PC5 QoS flow rate (PC5 Flow Bit Rates);

-PC5 Link Aggregated Bit Rates;

-Range (range);

-Resource allocation mode.

It should be understood that the resource allocation mode included in the requested PC5 QoS parameters is the resource allocation mode requested by the terminal. For example, the resource allocation mode may be a network scheduling mode.

Step 703: The AMF network element sends an AM policy request (policy request) message to the PCF network element.

Correspondingly, the PCF network element receives the AM policy request message from the AMF network element.

Among them, the AM policy request message carries the identifier of at least one service and the requested PC5 QoS parameters1.

Step 704: The PCF network element sends an AM policy response (policy response) message to the AMF network element.

Correspondingly, the AMF network element receives the AM policy response message from the PCF network element.

Among them, the AM policy response message carries the QoS parameters (authorized PC5 QoS parameters) that the PCF network element authorizes the UE to use on the PC5 interface, the identifier of the allowed service, and the preferred scheduling mode (allocation mode). For example, the preferred scheduling mode may be the network scheduling mode, that is, mode 1 (mode 1). The network side authorizes the UE to use the direct communication interface resources acquired based on the network scheduling mode to transmit data of allowed services on the PC5 interface.

It can be understood that the preferred scheduling mode may also be a mode independently selected by the terminal, that is, mode 2 (mode 2). The terminal transmits the data of the permitted service on the PC5 interface through the directly connected communication interface resource selected by itself.

The preferred scheduling mode indicates that the PC5 interface quality of service stream corresponding to the permitted service needs to be transmitted in a low power consumption manner.

Among them, the PC5 interface quality of service flow includes a PC5 interface packet filter. A PC5 interface quality of service flow (PC5 QoS Flow Identifer, PFI) value in the PC5 interface packet filter is an identifier of an allowed service.

Among them, low-power transmission of data, including (not limited to) the use of SPS resource allocation on the PC5 interface (that is, the UE uses the SPS resources configured by the (R)AN device on the PC5 interface for the UE), or in specific resources In the pool, the terminal randomly selects the directly connected communication interface resource to send data.

Step 705: The AMF network element sends an N2 (N2 request) message to the (R)AN device, and correspondingly, the (R)AN device receives the N2 message from the AMF network element.

Among them, the N2 message includes authorized PC5 QoS parameters 2, the preferred scheduling mode, the identifier of the allowed service, and the service accept message. Among them, the service accept message includes the identifier of the allowed service. The authorized PC5 QoS parameters 2 includes the identifier of the allowed service and the preferred scheduling mode. For example, the preferred scheduling mode is the network scheduling mode. Wherein, the identifier of the allowed service is the identifier of the service that authorizes the UE to transmit data on the PC5 interface. The permitted business belongs to all or part of at least one business. authorized PC5 QoS parameters 2, the preferred scheduling mode, and the identifier of the allowed service can be carried in the context of the UE.

It should be understood that after the (R)AN device receives authorized PC5 QoS parameters 2, it can allocate direct communication interface resources for the terminal to transmit data of allowed services according to authorized PC5 QoS parameters 2. For example, authorized PC5 QoS parameters 2 means that the guaranteed bandwidth for the AMF network element to authorize the terminal to transmit the data of the allowed service is 5M, and the (R)AN device allocates the bandwidth of the direct communication interface resource for the terminal to transmit the data of the allowed service At least 5M to ensure reliable transmission of data for permitted services. Of course, when the (R)AN device allocates direct communication interface resources for the terminal to transmit data of allowed services, it not only needs to refer to authorized PC5 QoS parameters, but also refer to the remaining resources at the (R)AN device or other terminal needs. Direct connection communication interface resources are not limited in this embodiment of the application.

Optionally, the AMF network element may also send a mode indication 1 (corresponding to fourth indication information) to the (R)AN device. The mode indication 1 is used to indicate when the (R)AN device and the UE are on the air interface (for example, Uu interface). ) When there is no data, the (R)AN device maintains the Uu interface connection with the UE (that is, the (R)AN device maintains an RRC connection between the UE and the UE), and the UE needs to use the power saving mode to maintain the Uu interface with the (R)AN device connect.

As a possible implementation, the mode indication 1 (corresponding to the fourth indication information) is used to indicate that if there is no data transmission between the (R)AN device and the UE on the air interface within the preset time period, the (R)AN device needs to keep with the UE. When the Uu interface is connected, and the Uu interface connection is maintained between the (R)AN device and the UE, the UE needs to adopt a power saving mode. It is understandable that after the preset time period is exceeded, if there is still no data transmission between the (R)AN device and the UE on the air interface, the (R)AN device can release the Uu interface connection with the UE, that is, the (R)AN device releases The RRC connection with the UE makes the UE in the RRC-inactive state.

Step 706: The (R)AN device sends RRC connection reconfiguration (connection reconfiguration) information to the UE.

Among them, the RRC connection reconfiguration information includes the configuration of the side link radio bearer (SL RB) and the service acceptance message.

Among them, the service acceptance message includes the identifier of the allowed service and authorized PC5 QoS parameters 2.

It is understandable that the configuration of the side link radio bearer (SL RB) is used to configure the radio bearer for the UE to transmit data of the allowed service on the PC5 interface. The RRC connection reconfiguration information may be actively sent by the (R)AN device to the UE, or the (R)AN device may send the RRC connection reconfiguration information to the UE based on the request of the UE. For example, if the (R)AN device obtains the N2 message from the AMF network element, it will actively send the RRC connection reconfiguration information to the UE.

The goal of step 706 in the embodiment of this application is that the UE receives the identifier of the allowed service from the AMF network element and authorized PC5 QoS parameters 2 through the (R)AN device.

Step 707: The PCF network element updates the UE's policy.

Among them, the policy may include the identifier of the permitted service and the PC5 interface quality of service flow corresponding to the identifier of the permitted service.

Wherein, the PC5 interface quality of service flow may include a PC5 interface filter, and the PC5 interface filter is used to determine the data of allowed services. Specifically, the PC5 interface filter may include the identifier of the allowed service. Taking the permitted service including application 1 as an example, the PC5 interface filter may include the identification of application 1.

Step 708: The PCF network element sends the updated UE policy to the UE.

Correspondingly, the UE receives the updated UE policy from the PCF network element.

As an example, the PCF network element may actively send the updated UE policy to the UE. As another example, the PCF network element may send the updated UE policy to the UE based on the request of the UE. For example, the PCF network element receives a UE policy update (UE policy update) request message from the UE. The UE policy update request message is used to request the UE's policy. The PCF network element sends a UE policy update response message to the UE according to the UE policy update request message. The UE policy update response message includes the updated UE policy.

The following steps 709 to 711 take the permitted service including application 1 as an example.

Step 709: The UE requests the (R)AN device for direct communication interface resources for transmitting data of application 1 on the PC5 interface.

In a possible implementation manner, step 709 can be replaced by the following method: the UE requests the (R)AN device to transmit application 1 on the PC5 interface according to the application 1 identification, source layer 2 identification, and destination layer 2 identification. Data direct communication interface resources. The UE provides the source layer 2 identification and the destination layer 2 identification to the (R)AN device so that the (R)AN device can determine the address of the sender of the application 1 data and the address of the recipient of the application 1 data.

Step 710: The (R)AN device allocates SPS resources to the UE according to the preferred scheduling mode.

Among them, the SPS resource can be used to transmit application 1 data on the PC5 interface. It can be understood that the SPS resource is a type of direct communication interface resource.

Step 711: The UE uses the above-mentioned SPS resource to send data of application 1 on the PC5 interface according to the quality of service flow of the PC5 interface.

As a possible implementation, step 711 in the embodiment of this application can be implemented in the following way: the UE determines the data of application 1 according to the PC5 interface packet filter, and then the UE uses the above-mentioned data on the PC5 interface communication link. The direct communication interface resource sends application 1 data. For example, the UE determining the data of application 1 according to the PC5 interface packet filter can be achieved in the following way: the UE determines that the identifier of the application corresponding to the data to be sent is the same as the identifier of the application 1 carried in the PC5 interface packet filter. Then the UE determines that the data to be sent is application 1 data.

If the other PC5 interface packet filter in the UE is inconsistent with the PC5 interface packet filter provided by the PCF network element for the UE, the priority of the PC5 interface packet filter provided by the PCF network element for the UE is higher than the other PC5 interface packet filters in the UE. The priority of the interface packet filter. In other words, the PC5 interface packet filter in step 711 may be, on the one hand, other PC5 interface packet filters in the UE, or it may be a PC5 interface packet filter provided by the PCF network element for the UE. When the two are inconsistent, the PC5 interface packet filter in step 711 is the PC5 interface packet filter provided by the PCF network element for the UE.

It should be noted that when the UE uses the direct communication interface resources configured by the (R)AN device for the UE to send application 1 data on the PC5 interface, the (R)AN device configures the UE on the air interface according to the mode indication 1 (for example, Uu interface) When there is no data transmission, keep the Uu interface connection. Specifically, the UE maintains the RRC-Connected state on the Uu interface and needs to use power-saving technologies, such as Long DRX. It is understandable that when the UE maintains the RRC-Connected state on the Uu interface and adopts power saving technology, the (R)AN device can indicate to the UE, and the UE can continue to use the above resource transmission configured by the (R)AN device for the UE. Apply the data of 1.

The content measured by the terminal in the RRC connected state is more than the content measured by the terminal in the idle state, and the terminal in the RRC connected state actually consumes more power than the terminal in the idle state.

In the embodiment shown in Figure 7, if there is no data transmission on the Uu interface between the UE and the (R)AN device, the UE also needs to perform data transmission on the PC5 interface. In this case: Although the UE can keep RRC connection with the (R)AN device, but the UE needs to adopt a power saving mode. At this time, the UE can continue to use the direct communication interface resources configured by the (R)AN device for the UE to send data of allowed services to reduce UE power consumption. On the other hand, in this solution, when data transmission between the UE and the (R)AN device needs to be performed on the Uu interface, the UE does not need to re-establish an RRC connection with the (R)AN device through the random access process to transmit data. . And for downlink transmission, the (R)AN device can also omit the process of re-paging the terminal.

In the embodiment shown in FIG. 7, the service request message (Service Request message) corresponds to the first message in the foregoing embodiment. The identification of application 1 corresponds to the identification of the first application in the above-mentioned embodiment, and the terminal requests the quality of service parameters (requested PC5 QoS parameters) of data transmission on the PC5 interface 1 corresponds to the first quality of service parameter in the above-mentioned embodiment, source layer 2 The identifier (source L2 ID) and the destination layer 2 identifier (destination L2 ID) correspond to the first link identifier. authorized PC5 QoS parameters2 corresponds to the authorized quality of service parameters in the foregoing embodiment. For the following embodiments, if relevant names are involved, please refer to the description here.

The embodiment shown in FIG. 7 describes the process in which the UE obtains authorized PC5 QoSparameters2 and the PC5 interface packet filter in the service request process, and when the UE needs to transmit application 1 data on the PC5 interface, when the UE is on the Uu interface When the upper and (R)AN device does not have data transmission, the UE maintains the RRC-Connected state on the Uu interface with the (R)AN device and adopts power-saving technology. At this time, the UE can continue to use the (R)AN device as The direct communication interface resource resource configured for the UE based on the network scheduling mode transmits the data of the application 1 on the PC5 interface.

Referring to FIG. 8, FIG. 8 shows another communication method of an embodiment of the present application. The difference between this method and the embodiment shown in FIG. 7 is that the UE is in a packet data unit (PDU) session (session). In the process, the authorized PC5 QoS parameters2 and PC5 interface packet filter are obtained from the PCF network element. The method includes:

Step 801: The UE sends a PDU session establishment request (PDU session establishment request) message to the AMF network element.

Correspondingly, the AMF network element receives the PDU session establishment request message from the UE.

Among them, the PDU session establishment request message may include: data network name (data network name, DNN), PC5 service indication, at least one service identifier, and the UE requested quality of service parameters (requested PC5 QoS) for data transmission on the PC5 interface. parameters)1. Wherein, the service quality parameter 1 includes at least one service identifier. The identification of at least one service included in the service quality parameter 1 indicates that the service quality parameter 1 is a service quality parameter used when transmitting data of at least one service. Among them, the indication of the PC5 service is used to indicate that the UE has the ability to transmit the PC5 service on the PC5 interface.

Step 802: The AMF network element selects the SMF network element that establishes the aforementioned PDU session for the UE.

Step 803: The AMF network element triggers the PDU session establishment session management context request (Nsmf_PDU session_CreateSMContext request) service operation to the SMF network element. Correspondingly, the SMF network element receives the Nsmf_PDU session_CreateSMContext request service operation from the AMF network element.

Among them, the Nsmf_PDU session_CreateSMContext request service includes the indication of the PC5 service, the identifier of at least one service, and the requested PC5 QoS parameters 1.

It can be understood that after step 803, the UE and other network elements in the core network continue to perform other procedures in the PDU session establishment process.

Step 804: The SMF network element sends a session management policy connection modification (SM Policy Association Modification) request message to the PCF network element.

Correspondingly, the PCF network element receives the SM Policy Association Modification request message from the SMF network element.

Among them, the SM Policy Association Modification request message can carry at least one service identifier and requested PC5 QoS parameters 1.

Step 805: The PCF network element sends a session management policy connection modification (SM Policy Association Modification) response message to the SMF network element.

Correspondingly, the SMF network element receives the SM Policy Association Modification response message from the PCF network element. Among them, the SM Policy Association Modification response message may include: authorized PC5 QoS parameters2.

Among them, authorized PC5 QoS parameters2 may include authorized PC5 QoS parameters2. The preferred scheduling mode corresponding to authorized PC5 QoS parameters2 is the network scheduling mode.

It can be understood that after step 805, the UE and other network elements in the core network continue to perform other procedures in the PDU session establishment process.

Step 806: The SMF network element sends an N1 container and an N2 container to the AMF network element.

Correspondingly, the AMF network element receives the N1 container and the N2 container from the SMF network element.

Among them, the N1 container can include the identifier of the allowed service, authorized PC5 QoS parameters2, and the PC5 interface packet filter. Among them, the PC5 interface packet filter may include the identifier of the allowed service.

Among them, the N2 container may include authorized PC5 QoS parameters2 and the identification of allowed services.

Among them, the permitted service is an application in at least one service.

Step 807: The AMF network element sends the N2 container to the (R)AN device.

Step 808: The AMF network element sends the N1 container to the UE.

Correspondingly, the UE receives the N1 container from the AMF network element. In this way, it is convenient for the UE to know in time the authorized PC5 QoS parameters2 and the PC5 interface packet filter used by the PCF network element to authorize the UE to transmit the data of the allowed service on the PC5 interface.

In the embodiment shown in FIG. 8, the UE can obtain the identifier of the allowed service authorized by the network side through the PDU session establishment process, and the data for determining the allowed service can use the direct communication interface resource obtained by the UE in the network scheduling mode. transmission. In addition, the UE can also obtain the authorized PC5 QoS parameters2 and the PC5 interface packet filter through the PDU session establishment process, so that the authorized PC5 QoS parameters2 and the PC5 interface packet filter can be directly used when the UE needs to transmit the data of the allowed service in the subsequent.

It should be understood that the embodiment shown in FIG. 8 takes the PDU session establishment process as an example, and the foregoing PDU session establishment process may also be replaced by a PDU session modification/update process. The foregoing PDU session establishment request message may correspond to the first message. In addition, the embodiment shown in FIG. 8 uses the UE to obtain authorized PC5 QoS parameters 2 in the PDU session establishment process.

Refer to FIG. 9 for another communication method provided by an embodiment of this application, and the method includes:

Step 901: The UE sends a service request message to the AMF network element through the (R)AN device, and correspondingly, the AMF network element receives the service request message from the UE through the (R)AN device.

Wherein, the service request message includes the identifier of the PDU session, the identifier of at least one service, and the request of the PC5 service. Among them, the PC5 service request is used to indicate that the UE requests to transmit PC5 service data on the PC5 interface.

Step 902: The AMF network element triggers a PDU session update session management context request (Nsmf_PDUSession_Update SM context request) service operation to the SMF network element. Correspondingly, the SMF network element receives the PDU session update session management context request service from the AMF network element. Wherein, the PDU session update session management context request service operation includes at least one service identifier and a PC5 service request.

Step 903: The SMF network element triggers a PDU session update session management context response (Nsmf_PDUSession_Update SM context response) service operation to the AMF network element, and accordingly, the AMF network element receives a serviced PDU session update session management context response from the SMF network element Service operation.

Among them, the PDU session update session management context response service operation includes the identifier of the allowed service, the authorized PC5 QoS parameters2, the authorized PC5 QoS parameters2 corresponding preferred scheduling mode, and the second mode indication. Among them, the preferred scheduling mode corresponding to authorized PC5 QoS parameters2 is the network scheduling mode. The permitted service may be a service in at least one service. The second mode indication is used to indicate that the (R)AN device can still use the direct communication interface resource acquired in the network scheduling mode to transmit data of the PC5 service when the terminal is in the RRC-inactive state.

The PDU session update session management context request service operation in FIG. 9 may correspond to the above-mentioned first message.

Step 904: The AMF network element sends the N2 container to the (R)AN device, and the corresponding (R)AN device receives the N2 container from the AMF network element.

Among them, the N2 container includes authorized PC5 QoS parameters2, authorized PC5 QoS parameters2 corresponding to the preferred scheduling mode and the second mode indication. Through the second mode indication (R)AN device, it is possible to configure the terminal to still use the direct communication interface resources obtained in the network scheduling mode to transmit the data of the PC5 service when the terminal is in the RRC-inactive state.

Step 905: The SMF network element sends the N1 container to the UE, and correspondingly, the UE receives the N1 container from the SMF network element.

Among them, the N1 container includes the identifier of the allowed service, authorized PC5 QoS parameters2, and the PC5 interface packet filter.

The following steps 906 to 911 take the permitted service including application 1 as an example. In other words, the subsequent steps 906 to 911 take the UE using the direct communication interface resource to transmit data of the application 1 on the PC5 interface as an example.

Step 906: The UE requests the (R)AN device for direct connection communication interface resources for transmitting application 1 data.

It can be understood that step 906 to step 911 are optional steps, and step 906 to step 911 can be executed when the UE needs to send data of an allowed service.

Step 907: The (R)AN device configures the direct communication interface resource for transmitting application 1 data for the UE based on the preferred scheduling mode of the UE, and correspondingly, the UE receives the data for transmitting application 1 from the (R)AN device Directly connected communication interface resources.

Step 908: According to the PC5 interface packet filter, the UE uses the direct communication interface resource configured by the (R)AN device for the UE to send the data of the application 1 on the PC5 interface.

Step 909: The (R)AN device sends a first notification message to the UE according to the second mode indication, and correspondingly, the UE receives the first notification message from the (R)AN device. The first notification message is used to instruct the UE to enter the RRC-inactive state from the RRC-active state.

It can be understood that, before step 909, it further includes: the (R)AN device determines that there is no data transmission on the Uu interface between the (R)AN device and the UE.

Step 910: The (R)AN device sends first indication information to the UE, where the first indication information is used to indicate that when the UE enters the RRC-inactive state, the UE is allowed to continue to use the aforementioned direct communication configured by the (R)AN device for the UE. The interface resource sends application 1 data on the PC5 interface.

Step 911: According to the first indication information, the UE continues to use the direct communication interface resources configured by the (R)AN device for the UE to send application 1 data on the PC5 interface when the UE enters the RRC-inactive state.

The service request message (Service Request message) in the embodiments shown in FIG. 7 and FIG. 8 and FIG. 9 corresponds to the first message in the foregoing embodiment. The identification of application 1 corresponds to the identification of the first application in the foregoing embodiment, and the QoS parameter (requested PC5 QoS parameters) 1 for which the terminal requests to transmit data on the PC5 interface corresponds to the first quality of service parameter in the foregoing embodiment. The source layer 2 identifier (source L2 ID) and the destination layer 2 identifier (destination L2 ID) correspond to the first link identifier. authorized PC5 QoS parameters2 corresponds to the authorized quality of service parameters in the foregoing embodiment.

Refer to FIG. 10 for another communication method provided by an embodiment of this application, and the method includes:

Step 1001: The UE sends a registration request message to the AMF network element through the (R)AN.

Correspondingly, the AMF network element receives the registration request message from the UE through the (R)AN.

Wherein, the registration request message may include requested PC5 QoS parameters1, at least one service identifier.

Optionally, the registration request message may further include a PC5 communication ID (communication ID), where the PC5 communication ID is used to characterize the PC5 communication link through which the UE transmits data of at least one service on the PC5 interface. For example, the PC5 communication link can consist of a source address and a destination address. The source address is the source layer 2 identifier, for example, the layer 2 address (source L2 ID) of the UE, and the destination address is the destination layer 2 identifier (destination L2 ID), for example, the layer 2 address of the UE that receives the data of the PC5 service.

Optionally, the registration request message may also include a first mode indication, the first mode indication is used to indicate that the UE requests to transmit PC5 service data in the network scheduling mode on the PC5 interface, or the first mode indication is used to indicate that the UE It has the ability to transmit PC5 service data on the PC5 interface.

Step 1002: The AMF network element triggers a terminal policy control update (Npcf_UEPolicyControl_Update) message to the PCF network element.

Correspondingly, the PCF network element receives a service-oriented terminal policy control update message from the AMF network element.

Wherein, the terminal policy control update message carries the requested PC5 QoS parameters1 requested by the UE in step 1001, and the identifier of at least one service. Optionally, the terminal policy control update message may also include the first mode indication and the PC5 communication identifier.

Step 1003: The PCF network element updates the UE's policy.

Among them, the UE's policy includes the PC5 communication ID used to transmit the data of the permitted service, the ID of the permitted service, and the PC5 interface quality of service flow corresponding to the ID of the permitted service. Among them, the PC5 interface quality of service flow includes the PC5 interface Packet filter set. The Packet filter set of the PC5 interface includes the identifier of the allowed service.

Step 1004: The PCF network element sends the N1N2 communication message transmission service to the AMF network element

(Namf_Communication_N1N2Message Transfer).

Correspondingly, the AMF network element receives Namf_Communication_N1N2Message Transfer from the PCF network element. Among them, Namf_Communication_N1N2Message Transfer includes the PC5 interface Packet filter set. Optionally, the Namf_Communication_N1N2Message Transfer may also include the PC5 communication identifier.

Step 1005: The AMF network element transmits the UE's strategy to the UE.

Correspondingly, the UE receives the UE's policy from the AMF network element.

Among them, the UE's policy may include the PC5 communication ID used to transmit the data of the permitted service, the ID of the permitted service, and the PC5 interface quality of service flow corresponding to the ID of the permitted service.

The embodiment shown in FIG. 10 mainly describes that the UE obtains the PC5 interface Packet filter set, the PC5 communication ID authorized by the network side, and the identifier of the allowed service from the PCF network element through the registration process.

Refer to FIG. 11 for another communication method provided by an embodiment of this application, and the method includes:

Step 1101, the UE sends a service request message (Service Request message) to the AMF network element.

Correspondingly, the AMF network element receives the service request message from the UE.

Among them, the service request message can be used for the UE to request the transmission of at least one service data on the PC5 interface. Further, the service request message can be used for the UE to request the transmission of at least one service on the PC5 interface in network scheduled mode (network scheduled mode). The data.

Exemplarily, the service request message may carry the identifier of at least one service. For this service, please refer to the aforementioned related description.

Optionally, the service request message also carries PC5 communication ID and/or operation (Operation) indication.

Among them, the PC5 communication ID is used to characterize the PC5 communication link through which the UE transmits at least one service on the PC5 interface. For example, the PC5 communication link can consist of a source address and a destination address. The source address is the layer 2 address of the UE, and the destination address is the layer 2 address of the UE that receives the data of the at least one service.

Among them, the operation instruction is used to characterize the activation of the PC5 service. The so-called PC5 service refers to the service transmitted by the UE on the PC5 interface. The PC5 service may include at least one service described above. The PC5 service in the embodiment of the present application may also be referred to as a VRU service.

Exemplarily, the Operation indication is set to "activate", which means that the UE requests to transmit data of the aforementioned at least one service on the PC5 interface in the network scheduling mode. Or Operation is set to "Activate

(activate)" means that the UE requests activation to transmit the data of the above at least one service on the PC5 interface in the network scheduling mode. Among them, "activate" can be represented by a preset value, for example, a preset binary "1" "Express.

As a possible implementation, step 1101 can be implemented in the following manner: the UE sends a service request message to the (R)AN device. Correspondingly, the (R)AN device sends a NAS message to the AMF network element, and the NAS message includes a service request message.

Step 1102, when the AMF network element does not have the context corresponding to the PC5 communication ID of the UE, the AMF network element sends a message 1 to the PCF network element.

Correspondingly, the PCF network element receives the message 1 from the AMF network element.

Among them, the message 1 may carry the PC5 communication ID and the identification of at least one service. For example, message 1 may be an AM policy request (AM policy request).

The context corresponding to the PC5 communication ID may refer to: the context of the PC5 communication link associated with the PC5 communication ID, and the context of the PC5 communication link includes at least the authorized PC5 QoS parameters of the service transmitted on the PC5 communication link.

It should be pointed out that steps 1102 to 1103 are optional steps and may not be executed.

Step 1103: The PCF network element sends a response message 1 to the AMF network element.

Correspondingly, the AMF network element receives the response message 1 from the PCF network element.

Wherein, the response message 1 may include authorized PC5 QoS parameters (Authorized PC5 QoS parameters), the identifier of the allowed service, and the preferred scheduling mode of the PC5 service.

The permitted service may be all or part of the at least one service, or the identifier of the permitted service may be obtained by the AMF network element from the subscription information of the UE. For example, the preferred scheduling mode of the PC5 service may be the network scheduling mode. For example, the preferred scheduling mode of the PC5 service may be carried in RRC Inactive Assistance Information (RRC Inactive Assistance Information).

Assuming that the preferred scheduling mode of the PC5 service is the network scheduling mode, then through the response message 1 in step 1103, the AMF network element can determine that the network side authorizes the UE to use the network scheduling mode to transmit data of allowed services on the PC5 interface.

Step 1104: The AMF network element sends an N2 message to the (R)AN device.

Correspondingly, the (R)AN device receives the N2 message from the AMF network element. Among them, the N2 message may include the PC5 communication ID, the preferred scheduling mode of the PC5 service, the identifier of the allowed service, and the Authorized PC5 QoS parameters.

The preferred scheduling mode of the PC5 service may be carried in RRC Inactive Assistance Information (RRC Inactive Assistance Information), or the Authorized PC5 QoS parameters include the preferred scheduling mode of the PC5 service.

The aforementioned PC5 communication ID, the preferred scheduling mode of the PC5 service, the identifier of the allowed service, and the Authorized PC5 QoS parameters can be carried in the context of the UE.

Taking the preferred scheduling mode of the PC5 service as the network scheduling mode as an example, the preferred scheduling mode of the PC5 service can be used to indicate to the (R)AN device, when the Uu between the (R)AN device and the UE is at a preset time ( For example, after 30s) there is no data, the (R)AN device needs to configure the UE to enter the RRC-inactive state, and when the UE is in the RRC-inactive state, the UE can continue to use the PC5 interface for network scheduling The direct communication interface resource acquired by the mode sends the data of the allowed service.

It is understandable that the (R)AN device can determine through the preferred scheduling mode of the PC5 service that when the UE is in the RRC-inactive state, the UE can continue to use the direct communication interface obtained in the network scheduling mode on the PC5 interface The resource sends the data of the allowed service.

In a possible implementation, the N2 message may also include a PC5 service mode indication. The PC5 service mode indication is that when there is no data transmission between the UE and the (R)AN device on the Uu interface, (R) The AN device configures the terminal to enter the RRC-inactive state from the RRC-active (active) state.

In a possible implementation manner, the N2 message may also include a service acceptance message (service accept message) sent by the AMF network element to the UE, and the service acceptance message (service accept message) includes an identifier of an allowed service. Optionally, the service acceptance message may also include the PC5 interface quality of service flow provided by the PCF network element.

Of course, the identifier of the allowed service can also be carried in the N1 container sent by the AMF network element to the UE through the (R)AN device.

Step 1105: The (R)AN device sends an RRC connection reconfiguration message to the UE.

Correspondingly, the UE receives the RRC connection reconfiguration message from the (R)AN device. The RRC connection reconfiguration message includes the identifier of the allowed service sent by the AMF network element to the UE. Optionally, the RRC connection reconfiguration message includes the PC5 interface quality of service flow provided by the PCF network element sent by the AMF network element to the UE.

Taking the permitted service including the first application as an example, the method provided in this embodiment of the present application may further include: step 1106.

Step 1106: The UE determines the PC5 interface quality of service flow of the first application.

Specifically, step 1106 can be implemented in the following manner: the UE determines the PC5 interface quality of service flow of the first application according to the PC5 interface quality of service flow provided by the PCF network element, or the UE determines the PC5 interface quality of service of the first application according to pre-configured parameters flow.

It is understandable that after the Service Request process, if the UE intends to transmit data of the first application, the method may further include steps 1107 to 1112:

Step 1107: The UE requests the (R)AN device for direct connection communication interface resources for transmitting data of the first application.

Step 1108: The (R)AN device configures a direct communication interface resource for transmitting data of the first application for the terminal.

Correspondingly, the UE receives the direct communication interface resource used to transmit the data of the first application from the (R)AN device.

Step 1109: The UE uses the direct communication interface resources configured by the (R)AN device for the UE to transmit the data of the first application on the PC5 interface according to the quality of service flow of the PC5 interface of the first application.

Specifically, a parameter in the quality of service flow of the PC5 interface is the identity of the first application. If the UE determines that the application identity corresponding to the data to be transmitted is the same as the identity of the first application, it is determined that the data to be transmitted is the identity of the first application. Data, and then use the direct communication interface resources configured by the (R)AN device for the UE to transmit the data of the first application on the PC5 interface.

It is understandable that step 1109 is a process in which the UE transmits the data of the first application on the directly connected communication interface resource when the UE is in the RRC-active (active) state. Of course, this step 1109 can be omitted.

Step 1110: The (R)AN device sends a first notification message to the UE according to the PC5 service mode indication.

The first notification message is used to notify the UE to enter the RRC-inactive state from the RRC-active (active) state.

For example, when there is no data transmission between the UE and the (R)AN device on the Uu interface, the (R)AN device configures the terminal to enter the RRC-inactive state from the RRC-active (active) state. In the active state, the RRC connection between the UE and the (R)AN device is released.

Step 1111, the (R)AN device sends first indication information to the UE.

Correspondingly, the UE receives the first indication information from the (R)AN device. The first indication information is used to indicate that when the UE is in the RRC-inactive state, the UE can continue to use the direct communication interface resources configured by the (R)AN device for the UE to transmit data of allowed services on the PC5 interface.

Step 1112, when the UE is in the RRC-inactive state, the UE uses the direct communication interface resources configured by the (R)AN device for the UE to transmit the data of the first application on the PC5 interface according to the first indication information.

It should be noted that step 1111 is an optional step. Accordingly, step 1112 can be replaced with: when the UE is in the RRC-inactive state, the UE uses the direct communication interface resources configured by the (R)AN device for the UE in the PC5 The data of the first application is transmitted on the interface.

It can be understood that, in the embodiment shown in FIG. 11, Authorized PC5 QoS parameters2 corresponds to the above-mentioned authorized quality of service parameters. The service acceptance message may correspond to the foregoing fourth message. The service request message may correspond to the first message in the foregoing embodiment.

Refer to FIG. 12 for another communication method provided by an embodiment of this application, and the method includes:

Step 1201: The UE sends a service request message (Service Request message) to the AMF network element.

Correspondingly, the AMF network element receives the service request message from the UE.

The service request message can be used for the UE to request to upload PC5 service data on the PC5 interface, and further, the service request message can be used for the UE to request to transmit the PC5 service data on the PC5 interface in a network scheduled mode (network scheduled mode).

Exemplarily, the service request message may carry the identification and/or operation (Operation) indication of the PC5 service. For this service, please refer to the aforementioned related description. The PC5 service can also be referred to as the VRU service.

The operation indication is used to indicate that the UE requests to activate the PC5 service, or the UE requests activation to transmit the PC5 service in the network scheduling mode.

Exemplarily, the Operation indication is set to "activate", which means that the UE requests to transmit the above-mentioned PC5 service data on the PC5 interface in the network scheduling mode. Or the Operation is set to "activate", which means that the UE requests activation to transmit the above-mentioned PC5 service data on the PC5 interface in the network scheduling mode. Among them, "activate" can be represented by a preset value, for example, represented by a preset binary "1".

As a possible implementation, step 1201 can be implemented in the following manner: the UE sends a service request message to the (R)AN device. Correspondingly, the (R)AN device sends a NAS message to the AMF network element, and the NAS message includes a service request message.

It is worth noting that other processes may also be included between step 1201 and step 1202. For example, the UE intends to send uplink data to the (R)AN device (the UE intends to send uplink data at the same time).

Step 1202, the AMF network element sends an N2 message to the (R)AN device.

Correspondingly, the (R)AN device receives the N2 message from the AMF network element. Wherein, the N2 message may include the preferred scheduling mode (The Preferred Scheduled Mode for PC5 Service) of the PC5 service and the identifier of the allowed service of the UE. The permitted business belongs to the business in the PC5 business.

In a possible implementation manner, the N2 message may also include a service accept message sent by the AMF network element to the UE. Wherein, the service acceptance message includes the identifier of the allowed service of the UE.

It is understandable that the (R)AN device can determine the preferred scheduling mode of the allowed service of the UE through the N2 message.

Step 1203: The (R)AN device sends an RRC connection reconfiguration message to the UE.

Correspondingly, the UE receives the RRC connection reconfiguration message from the (R)AN device.

Among them, the RRC connection reconfiguration message includes a service acceptance message.

The foregoing steps 1201 to 1203 may be referred to as a service request procedure. After the service request procedure, the method provided in this embodiment of the present application may further include: the UE requests the radio resource for transmitting the data of the PC5 service, and the UE uses The data of the PC5 service is transmitted in an energy-saving manner. For example, the UE transmitting the data of the PC5 service in an energy-saving manner may be the direct communication interface resource obtained by the UE in the network scheduling mode to transmit the data of the PC5 service. For example, step 1107 to step 1112 in FIG. 11.

FIG. 13 shows another embodiment provided by an embodiment of the present application, and this embodiment includes:

Step 1301: The UE sends a service request (service request) message to the (R)AN device.

Correspondingly, the (R)AN device receives the service request message from the UE.

The service request message is used to indicate that the UE wishes to stop transmitting data on the PC5 interface, or used to indicate that it stops transmitting data on the PC5 interface using the network scheduling mode. Or, if the service request message also carries the identifier of the first application, the service request message is used to indicate that the UE wishes to stop transmitting the data of the first application on the PC5 interface. The first application belongs to the allowed service of the UE.

Among them, the service request message contains an Operation indication. Operation instruction is set to "deactivate

(deactivate)" means that the UE wants to stop transmitting data on the PC5 interface. Or Operation is set to "deactivate" means that the UE requests deactivation to transmit data on the PC5 interface in network scheduling mode. Or Operation is set to "deactivate" (deactivate)” means that the UE wishes to stop transmitting the data of the first application on the PC5 interface. Among them, “deactivate” can be represented by a preset value, for example, represented by a preset binary “0”.

Step 1302: The (R)AN device sends a NAS message to the AMF network element.

Correspondingly, the AMF network element receives the NAS message from the (R)AN device.

Among them, the NAS message includes a service request message.

Step 1303: The AMF network element sends an N2 message to the (R)AN device.

Correspondingly, (R)AN receives the N2 message from the AMF network element.

As an example, the N2 message does not include the preferred scheduling mode of the PC5 service. If the N2 message does not include the preferred scheduling mode of the PC5 service, the (R)AN device can determine to release the direct communication interface resources configured for the PC5 service through the N2 message. For example, the N2 message includes RRC Inactive Assistance Information (RRC Inactive Assistance Information), and the RRC Inactive Assistance Information (RRC Inactive Assistance Information) does not include the preferred scheduling mode of the PC5 service.

As an example, the N2 message may carry auxiliary information, which is used by the (R)AN device to determine to release the direct communication interface resources configured for the PC5 service.

Step 1304: According to the N2 message, the (R)AN device releases the direct communication interface resource configured for the UE for transmitting the data of the PC5 service.

It is worth noting that if the UE wishes to stop transmitting the data of the first application on the PC5 interface in step 1301, the N2 message sent by the AMF network element to the (R)AN device can also carry the identity of the first application, which is convenient ( R) The AN device releases the direct communication interface resources configured for the UE to transmit the data of the first application. In other words, the (R) AN device may not release the direct communication configured for the data of the non-first application in the PC5 service. Interface resources.

It is understandable that in this embodiment, after the Service Request procedure, when the (R)AN device determines that there is no data transmission on the Uu interface with the UE within a preset time, the (R)AN device configures the UE Enter RRC_IDLE and CM_IDLE.

The Service Request message in the embodiment shown in FIG. 13 corresponds to the fourth message in the foregoing embodiment.

For the various steps between the embodiments described in FIG. 4 to FIG. 13 in the embodiments of the present application, related terms can be used for reference from each other.

The foregoing mainly introduces the solution of the embodiment of the present application from the perspective of interaction between various network elements. It can be understood that each network element, such as an access network device, a terminal, an access management network element, etc., includes hardware structures and/or software modules corresponding to each function in order to realize the above-mentioned functions. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The embodiments of this application can divide functional units according to the above-mentioned method examples, access network equipment, terminals, and access management network elements. For example, each functional unit can be divided corresponding to each function, or two or more functions can be integrated. In a processing unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

The method of the embodiment of the present application is described above in conjunction with FIG. 4 to FIG. 13, and the communication device provided by the embodiment of the present application for performing the foregoing method is described below. Those skilled in the art can understand that the method and the device can be combined and referenced with each other, and the communication device provided in the embodiment of the present application can execute the steps performed by the access network equipment, the terminal, and the access management network element in the foregoing communication method.

In the case of using an integrated unit, FIG. 14 shows the communication device involved in the foregoing embodiment, and the communication device may include: a communication unit 102 and a processing unit 101.

In an example, the communication device is a terminal or a chip applied in the terminal. In this case, the communication unit 102 is used to support the communication device to perform the receiving action performed by the terminal in step 401 of FIG. 4 in the above-mentioned embodiment. The processing unit 101 is configured to support the communication device to execute the processing actions executed by the terminal in step 402 of FIG. 4. The communication unit 102 is also configured to support the communication device to execute the sending action performed by the terminal in step 402 in the foregoing embodiment.

In a possible embodiment, the communication unit 102 is further configured to support the communication device to execute the sending actions performed by the terminal in step 501, step 503, step 504, step 506, step 509, and step 510 in the foregoing embodiment, The communication unit 102 is also configured to support the communication device to execute the receiving actions performed by the terminal in step 502, step 505, and step 508 in the foregoing embodiment.

In another example, the communication device is an access network device or a chip applied to the access network device. In this case, the communication unit 102 is configured to support the communication device to perform the sending action performed by the access network device in step 401 in the foregoing embodiment. The processing unit 101 is configured to support the communication device to execute the resources determined in the foregoing embodiment to allocate the terminal for transmitting the data of the first application.

In a possible implementation manner, the communication unit 102 is further configured to support the communication device to execute the sending action performed by the access network device in step 508 in the foregoing embodiment. The communication unit 102 is further configured to support the communication device to execute the receiving action performed by the access network device in step 511 in the foregoing embodiment. The processing unit 101 is configured to support the communication device to execute the processing action performed by the access network device in step 512 of the foregoing embodiment.

In another example, the communication device is an access management network element, or a chip applied to an access management network element. In this case, the communication unit 102 is configured to support the communication device to perform the sending action performed by the access management network element in step 502 of FIG. 5 in the foregoing embodiment. The processing unit 101 is further configured to support the communication device to execute the action of determining the identity of one or more applications in the foregoing embodiment.

In a possible embodiment, the communication unit 102 is further configured to support the communication device to perform the receiving actions performed by the access management network element in step 503, step 504, and step 510 in the foregoing embodiment. The communication unit 102 is also used to support the communication device to execute the sending action performed by the access management network element in step 505 and step 511 in the foregoing embodiment.

In the case of using an integrated unit, FIG. 15 shows a schematic diagram of a possible logical structure of the communication device involved in the foregoing embodiment. The communication device includes: a processing module 112 and a communication module 113. The processing module 112 is used to control and manage the actions of the communication device. For example, the processing module 112 is used to perform information/data processing steps on the communication device. The communication module 113 is used to support the communication device to send or receive information/data.

In a possible embodiment, the communication device may further include a storage module 111 for storing program codes and data that can be used by the communication device.

In an example, the communication device is a terminal or a chip applied in the terminal. In this case, the communication module 113 is used to support the communication device to perform the receiving action performed by the terminal in step 401 of FIG. 4 of the above-mentioned embodiment. The processing module 112 is configured to support the communication device to execute the processing actions executed by the terminal in step 402 of FIG. 4. The communication module 113 is also used to support the communication device to execute the sending action performed by the terminal in step 402 in the foregoing embodiment.

In a possible embodiment, the communication module 113 is also used to support the communication device to execute the sending actions performed by the terminal in step 501, step 503, step 504, step 506, step 509, and step 510 in the foregoing embodiment, The communication module 113 is also used to support the communication device to execute the receiving actions performed by the terminal in step 502, step 505, and step 508 in the foregoing embodiment.

In another example, the communication device is an access network device or a chip applied to the access network device. In this case, the communication module 113 is used to support the communication device to execute the sending action performed by the access network device in step 401 in the foregoing embodiment. The processing module 112 is configured to support the communication device to execute the resources determined in the foregoing embodiment to allocate the terminal for transmitting the data of the first application.

In a possible implementation manner, the communication module 113 is further configured to support the communication device to perform the sending action performed by the access network device in step 508 in the foregoing embodiment. The communication module 113 is also used to support the communication device to perform the receiving action performed by the access network device in step 511 in the foregoing embodiment. The processing module 112 is configured to support the communication device to perform the processing actions performed by the access network device in step 512 of the foregoing embodiment.

In another example, the communication device is an access management network element, or a chip applied to an access management network element. In this case, the communication module 113 is configured to support the communication device to perform the sending action performed by the access management network element in step 502 of FIG. 5 in the foregoing embodiment. The processing module 112 is also configured to support the communication device to perform the action of determining the identifier of the authorized service in the foregoing embodiment.

In a possible embodiment, the communication module 113 is further configured to support the communication device to perform the receiving actions performed by the access management network element in step 503, step 504, and step 510 in the foregoing embodiment. The communication module 113 is also used to support the communication device to execute the sending action performed by the access management network element in step 505 and step 511 in the foregoing embodiment.

The processing module 112 may be a processor or a controller, for example, a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, Hardware components or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication module 113 may be a transceiver, a transceiver circuit, or a communication interface. The storage module 111 may be a memory.

When the processing module 112 is the processor 31 or the processor 35, the communication module 113 is the transceiver 33, and the storage module 111 is the memory 32, the communication device involved in this application may be the communication device shown in FIG. 3.

It should be noted that if the communication device shown in FIG. 3 is an access management network element, the transceiver 33 in FIG. 3 can be replaced with a communication interface.

In an example, the communication device is a terminal or a chip applied in the terminal. In this case, the transceiver 33 is used to support the communication device to perform the receiving action performed by the terminal in step 401 of FIG. 4 of the above-mentioned embodiment. The processor 31 and/or the processor 35 are configured to support the communication device to execute the processing actions executed by the terminal in step 402 of FIG. 4. The transceiver 33 is also used to support the communication device to execute the sending action performed by the terminal in step 402 in the foregoing embodiment.

In a possible embodiment, the transceiver 33 is also used to support the communication device to execute the sending actions performed by the terminal in step 501, step 503, step 504, step 506, step 509, and step 510 in the foregoing embodiment, The transceiver 33 is also used to support the communication device to perform the receiving actions performed by the terminal in step 502, step 505, and step 508 in the foregoing embodiment. The processor 31 and/or the processor 35 are configured to support the communication device to execute step 509 in the foregoing embodiment.

In another example, the communication device is an access network device, or a chip applied to the access network device. In this case, the transceiver 33 is used to support the communication device to perform the sending action performed by the access network device in step 401 in the foregoing embodiment. The processor 31 and/or the processor 35 are configured to support the communication device to execute the resources determined in the foregoing embodiment to allocate the terminal for transmitting the data of the first application.

In a possible implementation manner, the transceiver 33 is also used to support the communication device to perform the sending action performed by the access network device in step 508 in the foregoing embodiment. The transceiver 33 is also used to support the communication device to perform the receiving action performed by the access network device in step 511 in the foregoing embodiment. The processor 31 and/or the processor 35 are configured to support the communication device to execute the processing actions performed by the access network device in step 512 of the foregoing embodiment.

In another example, the communication device is an access management network element, or a chip applied to an access management network element. In this case, the communication interface is used to support the communication device to perform the sending action performed by the access management network element in step 502 of FIG. 5 in the foregoing embodiment. The processor 31 and/or the processor 35 are further configured to support the communication device to perform the action of determining the identity of one or more applications in the foregoing embodiment.

In a possible embodiment, the communication interface is also used to support the communication device to perform the receiving actions performed by the access management network element in step 503, step 504, and step 510 in the foregoing embodiment. The communication interface is also used to support the communication device to execute the sending action performed by the access management network element in step 505 and step 511 in the foregoing embodiment.

FIG. 16 is a schematic structural diagram of a chip 150 provided by an embodiment of the present application. The chip 150 includes one or more (including two) processors 1510 and a communication interface 1530.

Optionally, the chip 150 further includes a memory 1540. The memory 1540 may include a read-only memory and a random access memory, and provides operation instructions and data to the processor 1510. A part of the memory 1540 may also include a non-volatile random access memory (NVRAM).

In some embodiments, the memory 1540 stores the following elements, execution modules or data structures, or their subsets, or their extended sets.

In the embodiment of the present application, the corresponding operation is executed by calling the operation instruction stored in the memory 1540 (the operation instruction may be stored in the operating system).

One possible implementation is that the chips used in the access network equipment, terminals, and access management network elements have similar structures, and different devices can use different chips to achieve their respective functions.

The processor 1510 controls processing operations of any one of the access network equipment, the terminal, and the access management network element. The processor 1510 may also be referred to as a central processing unit (CPU).

The memory 1540 may include a read-only memory and a random access memory, and provides instructions and data to the processor 1510. A part of the memory 1540 may also include NVRAM. For example, in an application, the memory 1540, the communication interface 1530, and the memory 1540 are coupled together through a bus system 1520, where the bus system 1520 may include a power bus, a control bus, and a status signal bus in addition to a data bus. However, for the sake of clear description, various buses are marked as the bus system 1520 in FIG. 16.

The methods disclosed in the foregoing embodiments of the present application may be applied to the processor 1510 or implemented by the processor 1510. The processor 1510 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by hardware integrated logic circuits in the processor 1510 or instructions in the form of software. The above-mentioned processor 1510 may be a general-purpose processor, a digital signal processing (digital signal processing, DSP), an ASIC, an off-the-shelf programmable gate array (field-programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistors. Logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 1540, and the processor 1510 reads the information in the memory 1540, and completes the steps of the foregoing method in combination with its hardware.

In a possible implementation manner, the communication interface 1530 is used to perform the steps of receiving and sending the access network device, terminal, and access management network element in the embodiment shown in FIG. 4 to FIG. 13. The processor 1510 is configured to execute the processing steps of the access network device, the terminal, and the access management network element in the embodiments shown in FIG. 4 to FIG. 13.

The above communication unit may be a communication interface of the device for receiving signals from other devices. For example, when the device is implemented in the form of a chip, the transceiver unit is a communication interface for the chip to receive signals or send signals from other chips or devices.

On the one hand, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium. When the instructions are executed, the functions of the terminal as shown in FIGS. 4 to 5 are realized.

On the one hand, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium. When the instructions are executed, the functions of the access network device as shown in Figs. 4 to 5 are realized.

On the one hand, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions. When the instructions are executed, the functions of accessing the management network element as shown in Figs. 4 to 5 are realized.

On the one hand, a computer program product including instructions is provided. The computer program product includes instructions. When the instructions are executed, the functions of accessing management network elements as shown in Figs. 4 to 5 are realized.

In yet another aspect, a computer program product including instructions is provided. The computer program product includes instructions. When the instructions are executed, the functions of the access network devices shown in Figs. 4 to 5 are realized.

In another aspect, a computer program product including instructions is provided. The computer program product includes instructions. When the instructions are executed, the functions of the terminal as shown in Figs. 4 to 5 are realized.

On the one hand, a chip is provided. The chip is applied to a terminal. The chip includes at least one processor and a communication interface. The communication interface is coupled to the at least one processor. Function.

In yet another aspect, a chip is provided. The chip is applied to an access network device. The chip includes at least one processor and a communication interface. The communication interface is coupled to the at least one processor. Figure 5 shows the functions of the access network equipment.

In yet another aspect, a chip is provided. The chip is applied to an access management network element. The chip includes at least one processor and a communication interface. The communication interface is coupled to the at least one processor. ~ The function of access management network element in Figure 5.

An embodiment of the present application provides a communication system, which includes a terminal, an access management network element, and an access network device. Wherein, the terminal is used to perform the functions performed by the terminal in FIGS. 4 to 5, and the access management network element is used to perform the steps performed by the access management network element in any one of 4 to FIG. 5. The access network equipment is used to perform the functions performed by the access network equipment as shown in Figures 4 to 5.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on the computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, network equipment, user equipment, or other programmable devices. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program or instruction may be transmitted from a website, a computer, or The server or data center transmits to another website site, computer, server or data center through wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that integrates one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, and a magnetic tape; it may also be an optical medium, such as a digital video disc (digital video disc, DVD); and it may also be a semiconductor medium, such as a solid state drive (solid state drive). , SSD).

Although the present application is described in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and realize the disclosure by looking at the drawings, the disclosure, and the appended claims. Other changes to the embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality. A single processor or other unit may implement several functions listed in the claims. Certain measures are described in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

Although the application has been described in combination with specific features and embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the application. Correspondingly, the specification and drawings are merely exemplary descriptions of the application as defined by the appended claims, and are deemed to cover any and all modifications, changes, combinations or equivalents within the scope of the application. Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims (41)

A communication method, characterized in that it comprises: The terminal receives resource information from the access network device, where the resource information is used to characterize the resources of the directly connected communication interface; The terminal transmits data through the direct communication interface resource, and the terminal is in a radio resource control RRC-inactive state. The method according to claim 1, wherein the direct communication interface resource is a direct communication interface resource based on a network scheduling mode. The method according to claim 1 or 2, before the terminal receives the resource information from the access network device, the method further comprises: The terminal requests the direct communication interface resource from the access network device. The method according to any one of claims 1 to 3, wherein the data is data of a first application of the terminal, and the direct communication interface resource is used to transmit the data of the first application. The method according to claim 4, wherein the first application belongs to an allowed service of the terminal, and the method further comprises: The terminal receives the identifier of the permitted service from the terminal that accesses the management network element. The method according to claim 5, characterized in that, before the terminal receives the identifier of the permitted service from the terminal of the access management network element, the method further comprises: The terminal sends an identifier of at least one service to the access management network element, where the identifier of the at least one service is used to indicate the service requested by the terminal. The method according to claim 6, wherein the identifier of the at least one service is carried in a first message, and the first message further includes a first parameter, and the first parameter is used to characterize the terminal request Use the network scheduling mode to transmit data on the direct communication interface. The method according to claim 7, wherein the method comprises: The terminal receives first indication information, where the first indication information is used to indicate that the terminal is allowed to use the direct communication interface resource based on the network scheduling mode to transmit the data of the first application while in the RRC-inactive state ； The transmission of data by the terminal through the direct communication interface resource includes: The terminal transmits the data of the first application through the direct communication interface resource according to the first indication information. The method according to claim 7 or 8, wherein the first message further includes a first link identifier, and the first link identifier indicates a data transmission method used by the terminal on the directly connected communication interface. Communication link. The method according to any one of claims 5 to 9, wherein the allowed service is a service of the terminal that is allowed to be transmitted through a direct communication interface. The method according to any one of claims 1-10, wherein the method further comprises: The terminal sends a first quality of service parameter to the access management network element, where the first quality of service parameter is a quality of service parameter used by the terminal to request data transmission on the directly connected communication interface. The method according to any one of claims 1 to 11, wherein the method further comprises: The terminal receives an authorized quality of service parameter from an access management network element, and the authorized quality of service parameter is used for the terminal to transmit data on a direct communication interface. The method according to any one of claims 1-12, wherein the data is data of a first application, the direct communication interface is a PC5 interface, and the method further comprises: Generating, by the terminal, a PC5 interface quality of service flow corresponding to the first application; The terminal associates the data of the first application with the PC5 interface quality of service flow. The method according to claim 13, wherein the terminal generating the PC5 interface quality of service flow corresponding to the first application comprises: The terminal receives the configuration information from the policy control network element, and the terminal generates the PC5 interface quality of service flow corresponding to the first application according to the configuration information; or, The terminal generates the PC5 interface quality of service flow corresponding to the first application according to the pre-configured parameters. The method according to any one of claims 1 to 14, wherein the method further comprises: The terminal sends a second parameter to the access management network element, where the second parameter is used to characterize that the terminal stops transmitting data on the directly connected communication interface. The method according to any one of claims 1 to 15, wherein before the terminal transmits data through the direct communication interface resource, the method further comprises: The terminal enters the RRC-inactive state. The method according to claim 16, wherein the method further comprises: Receiving, by the terminal, a first notification message from the access network device, where the first notification message is used to notify the terminal to enter the RRC-inactive state; The terminal entering the RRC-inactive state includes: The terminal enters the RRC-inactive state according to the first notification message. A communication method, characterized in that it comprises: The access network device sends resource information to the terminal, where the resource information is used to characterize direct communication interface resources, and the direct communication interface resources are used to transmit data when the terminal is in a radio resource control RRC-inactive state. The method according to claim 18, wherein the direct communication interface resource is a direct communication interface resource based on a network scheduling mode. The method according to claim 18 or 16, wherein the method further comprises: Receiving, by the access network device, the preferred scheduling mode of the terminal from the access management network element; The sending of resource information by the access network device to the terminal includes: The access network device sends the resource information to the terminal according to the preferred scheduling mode of the terminal. The method according to claim 20, wherein the data is data of a first application, and the preferred scheduling mode is a preferred scheduling mode corresponding to the first application. The method according to claim 21, wherein the first application belongs to an allowed service of the terminal. The method according to claim 22, wherein the allowed service is a service of the terminal that is allowed to be transmitted through a direct communication interface. The method according to any one of claims 18 to 23, wherein the method further comprises: The access network device sends first indication information to the terminal, where the first indication information is used to indicate that the terminal is allowed to use the direct communication interface resource transmission based on the network scheduling mode in the RRC-inactive state The data of the first application. The method according to any one of claims 18 to 24, wherein the method further comprises: The access network device sends a first notification message to the terminal, where the first notification message is used to notify the terminal to enter the RRC-inactive state. The method according to any one of claims 18 to 25, wherein the method further comprises: When the terminal stops transmitting data through the direct communication interface resource, the access network device releases the direct communication interface resource. A communication method, characterized in that it comprises: Access management network element to obtain terminal contract information; The access management network element sends the identifier of the allowed service of the terminal to the terminal according to the subscription information. The method according to claim 27, characterized in that, before said sending an identifier of the permitted service of the terminal to the terminal, the method further comprises: The access management network element receives an identifier of at least one service from the terminal, and the identifier of the at least one service is used to indicate the service requested by the terminal. The method according to claim 28, wherein the identifier of the at least one service is carried in a first message, and the first message further includes a first parameter, and the first parameter is used to characterize the terminal request Use the network scheduling mode to transmit data on the direct communication interface; The method also includes: The access management network element sends first indication information to the access network device or the terminal according to the first parameter, where the first indication information is used to indicate that the terminal is allowed to use The direct communication interface resource in the network scheduling mode transmits data of the first application, and the first application belongs to the at least one service. The method according to claim 29, wherein the first message further includes a first link identifier, and the first link identifier indicates a communication link used for the terminal to transmit data on the directly connected communication interface road. The method according to any one of claims 27-30, wherein the method further comprises: The access management network element sends an authorized quality of service parameter to the terminal, where the authorized quality of service parameter is used for the terminal to transmit data on a direct communication interface. The method according to claim 31, wherein the method further comprises: The access management network element receives a first quality of service parameter from the terminal, where the first quality of service parameter is a quality of service parameter used by the terminal to request data transmission on a directly connected communication interface. The method according to any one of claims 27 to 32, wherein the method further comprises: The access management network element receives a second parameter from the terminal, where the second parameter is used to characterize that the terminal stops transmitting data on the directly connected communication interface; The access management network element instructs the access network device to release the direct communication interface resource of the terminal according to the second parameter. The method according to any one of claims 27 to 33, wherein the method further comprises: The access management network element sends the preferred scheduling mode of the terminal to the access network device. The method according to any one of claims 27 to 34, wherein the allowed service is a service of the terminal that is allowed to be transmitted through a direct communication interface. A communication device, characterized by comprising: at least one processor, the at least one processor is coupled with a memory, and instructions are stored in the memory, and the processor runs the instructions to implement claims 1-17 Any of the methods. A communication device, comprising: at least one processor, the at least one processor is coupled to a memory, the memory stores instructions, and the processor runs the instructions to implement claims 18 to 26 Any of the methods. A communication device, comprising: at least one processor, the at least one processor is coupled to a memory, the memory stores instructions, and the processor runs the instructions to implement claims 27 to 35 Any of the methods. A communication system, characterized by comprising: an access network device and an access management network element, wherein the access network device is used to execute the method according to any one of claims 18 to 26, and the connection The incoming management network element is used to execute the method according to any one of claims 27 to 35. The system according to claim 39, further comprising a terminal configured to execute the method according to any one of claims 1-17. A computer-readable storage medium, characterized in that instructions are stored in the computer-readable storage medium, and when the instructions are executed, the method according to any one of claims 1 to 17 is realized, or, To implement the method according to any one of claims 18 to 26, or to implement the method according to any one of claims 27 to 35.

Images