WO2023102693A1 - Wireless communication method, remote ue and network device - Google Patents

Abstract

A wireless communication method, a remote UE and a network device. The method comprises: a remote UE sending first information, wherein the first information is related to sidelink transmission of the remote UE. A remote UE reports information related to sidelink transmission of the remote UE, and a network device can thus configure an appropriate signal quality threshold for the remote UE on the basis of first information, such that the remote UE selects an appropriate relay UE.

Description

Wireless communication method, remote terminal and network equipment technical field

The embodiments of the present application relate to the communication field, and in particular to a wireless communication method, a remote terminal, and a network device.

Background technique

In the New Radio (NR) system, a terminal device with Proximity-based Services (ProSe) capability can directly communicate with another terminal device with ProSe capability through the PC5 interface. When a terminal device can connect to an external data network through the fifth generation mobile communication (The 5th Generation, 5G) network and also has ProSe capability, this terminal device can act as a relay terminal (Relay UE), and another ProSe capable The remote terminal (remote UE) can establish a direct connection with the relay terminal through the PC5 interface, and interact with the external network through the protocol data unit (Protocol Data Unit, PDU) session established between the relay terminal and the 5G network. The remote terminal can select the relay terminal according to the sidelink signal quality threshold configured by the network device. Therefore, how to configure the appropriate signal quality threshold for the remote terminal to select a suitable relay terminal for the network device is an urgent problem to be solved. .

Contents of the invention

The present application provides a wireless communication method, a remote terminal and a network device. The remote terminal reports information related to the side transmission of the remote terminal to the network device, so that the network device can send information to the remote terminal based on the information. Configure an appropriate sidelink signal quality threshold for the remote terminal to select an appropriate relay terminal.

In a first aspect, a wireless communication method is provided, including: a remote terminal sending first information, where the first information is related to sidelink transmission of the remote terminal.

In a second aspect, a wireless communication method is provided, including: a network device receiving first information sent by a remote terminal, where the first information is related to a sidelink transmission of the remote terminal.

In a third aspect, a remote terminal is provided, configured to execute the method in the above first aspect or various implementations thereof.

Specifically, the remote terminal includes a functional module for executing the method in the above first aspect or its various implementation manners.

In a fourth aspect, a network device is provided, configured to execute the method in the foregoing second aspect or various implementation manners thereof.

Specifically, the network device includes a functional module for executing the method in the above second aspect or each implementation manner thereof.

In a fifth aspect, a remote terminal is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above first aspect or its various implementations.

A sixth aspect provides a network device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above second aspect or its various implementations.

In a seventh aspect, a chip is provided for implementing any one of the above first aspect to the second aspect or the method in each implementation manner thereof.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes any one of the above-mentioned first to second aspects or any of the implementations thereof. method.

In an eighth aspect, there is provided a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute any one of the above-mentioned first to second aspects or the method in each implementation manner thereof.

A ninth aspect provides a computer program product, including computer program instructions, the computer program instructions cause a computer to execute any one of the above first to second aspects or the method in each implementation manner.

In a tenth aspect, a computer program is provided, which, when running on a computer, causes the computer to execute any one of the above-mentioned first to second aspects or the method in each implementation manner.

Through the above technical solution, the remote terminal reports information related to the sidelink transmission of the remote terminal to the network device, so that the network device can configure an appropriate sidelink signal quality threshold for the remote terminal based on the information for remote transmission. The terminal selects a suitable relay terminal.

Description of drawings

FIG. 1 is a schematic diagram of a communication system architecture applied in an embodiment of the present application.

Fig. 2 is a schematic diagram of another communication system architecture applied in the embodiment of the present application.

Fig. 3 is a schematic diagram of establishing a connection between a remote terminal and a relay terminal.

Fig. 4 is a schematic diagram of a relay discovery process according to an embodiment of the present application.

Fig. 5 is a schematic diagram of another relay discovery process according to an embodiment of the present application.

FIG. 6 is a schematic interaction diagram of a wireless communication method provided by an embodiment of the present application.

Fig. 7 is a schematic block diagram of a remote terminal provided according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of a network device provided according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of a chip provided according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. With regard to the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application may also be applied to these communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) deployment Web scene.

Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered as non-shared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In the embodiment of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).

In this embodiment of the application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.

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

In the embodiment of the present application, the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network A network device or a base station (gNB) in a network device or a network device in a future evolved PLMN network or a network device in an NTN network.

As an example but not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network equipment may be a satellite or a balloon station. For example, the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc. Optionally, the network device may also be a base station installed on land, water, and other locations.

In this embodiment of the present application, the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.

In this embodiment of the application, "predefined" or "preconfigured" can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The application does not limit its specific implementation. For example, pre-defined may refer to defined in the protocol.

In the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. The following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

Fig. 1 is a schematic diagram of a communication system to which the embodiment of the present application is applicable. The transmission resources of the vehicle-mounted terminals (vehicle-mounted terminal 121 and vehicle-mounted terminal 122 ) are allocated by the base station 110 , and the vehicle-mounted terminals transmit data on the sidelink according to the resources allocated by the base station 110 . Specifically, the base station 110 may allocate resources for a single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.

Fig. 2 is a schematic diagram of another communication system to which the embodiment of the present application is applicable. The vehicle-mounted terminals (vehicle-mounted terminal 131 and vehicle-mounted terminal 132 ) autonomously select transmission resources on sidelink resources for data transmission. Optionally, the vehicle-mounted terminal may select transmission resources randomly, or select transmission resources by listening.

It should be noted that device-to-device communication is based on a sidelink (Sidelink, SL) transmission technology based on device to device (D2D), and the communication data in the traditional cellular system is received or sent through the base station. The method is different. The Internet of Vehicles system adopts the method of terminal-to-terminal direct communication, so it has higher spectral efficiency and lower transmission delay. Two transmission modes are defined in 3GPP, which are respectively recorded as: mode (sidelink resource allocation mode A) and second mode (sidelink resource allocation mode B).

Mode A: The transmission resources of the terminal are allocated by the base station, and the terminal sends data on the sidelink according to the resources allocated by the base station; the base station can allocate resources for a single transmission to the terminal, and can also allocate resources for semi-static transmission to the terminal resource.

Mode B: the terminal selects a resource from the resource pool for data transmission.

Proximity-based Services (ProSe) involves device-to-device communication, mainly for public safety services. In ProSe, by configuring the position of the resource pool in the time domain, for example, the resource pool is discontinuous in the time domain, so that the UE can discontinuously send/receive data on the sidelink, thereby achieving the power saving effect.

The Internet of Vehicles system is mainly researched on the scene of vehicle-to-vehicle communication, which is mainly oriented to relatively high-speed mobile vehicle-to-vehicle and vehicle-to-human communication services. In V2X, because the vehicle system has continuous power supply, power efficiency is not the main issue, but the delay of data transmission is the main issue, so the system design requires the terminal equipment to perform continuous transmission and reception.

The wearable device (FeD2D) scenario studies the scenario where wearable devices access the network through mobile phones, and it is mainly oriented to scenarios with low mobile speed and low power access.

In FeD2D, the base station can configure Discontinuous Reception (DRX) parameters of the remote terminal through a relay terminal.

In the new air interface-vehicle to other equipment (New Radio-Vehicle to Everything, NR-V2X), it supports automatic driving, so it puts forward higher requirements for data interaction between vehicles, such as higher throughput, lower Latency, higher reliability, larger coverage, more flexible resource allocation, etc.

In the LTE-V2X system, the broadcast transmission mode is supported, and in the NR-V2X system, the unicast and multicast transmission modes are introduced.

Similar to the LTE V2X system, the NR V2X system can also define the above two resource authorization modes, mode A/mode B. The resource acquisition is indicated through the sidelink authorization, that is, the sidelink authorization indicates the corresponding physical sidelink control channel (Physical Sidelink Control Channel, PSCCH) and physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH) resources time frequency position.

In addition to the Hybrid Automatic Repeat reQuest (HARQ) retransmission initiated by UE without feedback, feedback-based HARQ retransmission is introduced in NR V2X, which is not limited to unicast communication, but also includes multicast communication.

To facilitate a better understanding of the embodiments of the present application, the sidelink relay technology (UE-to-network Relay) related to the present application will be described.

In ProSe, the UE-to-network relay function based on Layer-3 (Layer-3, L3) relay is introduced, that is, the remote UE accesses the network through the relay UE, and the relay UE undertakes the Internet Protocol (Internet Protocol, The function of IP) layer relay is to transfer data between the remote UE and the network equipment, and the remote UE and the relay UE are connected through the side link. Fig. 3 shows a schematic flowchart of establishing a connection between a remote UE and a relay UE. Wherein, in S25, the relay UE reports the ID and IP information of the remote UE to the network, and according to the reported message, the network learns the association relationship between the relay UE and the remote UE, so as to perform corresponding bearer/session management and configuration, Thus, the remote UE is connected to the network through the relay UE.

In some scenarios, the Remote UE and the Relay UE need to perform a discovery process before establishing a connection. The discovery process can use Model A (Model A) or Model B (Model B). Figure 4 and Figure 5 show an example of the discovery process of mode A and mode B respectively.

As shown in FIG. 4, UE1 can function as a Relay UE to send an Announcement message, or a discovery notification message, to notify the Remote UE. The UE that has received the discovery notification message can establish a connection with the UE1 when a relay service is needed, and transmit relay data through the UE1.

As shown in Figure 5, UE1 can be used as a Remote UE, and if it wants to find a Relay UE, it can send a Solicitation message, or a Discovery Solicitation message, to notify the Relay UE. The UE receiving the Solicitation message may reply a discovery response message (Response message) to UE1 when it can perform the relay service, and notify UE1 that it can perform the relay service.

In other scenarios, the UE may also use a direct communication request (direct communication request, DCR) message to perform device discovery. For example, the source UE may broadcast a DCR message, which includes information about the target UE, and the relay UE forwards the DCR message to the corresponding target UE after receiving the DCR message, thereby completing the discovery process.

In some scenarios, the network device can configure the signal quality threshold for the remote terminal to select the relay terminal, and the remote terminal can select the relay terminal based on this threshold. Therefore, how does the network device configure an appropriate threshold for the remote terminal? Selecting a suitable relay terminal for the terminal is an urgent problem to be solved.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies may be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

FIG. 6 is a schematic interaction diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 6, the method 200 includes at least part of the following content:

S210. The remote terminal sends first information, where the first information is related to the sidelink transmission of the remote terminal.

Correspondingly, the network device receives the first information.

Optionally, the remote terminal may be a terminal device in the Internet of Vehicles system, or may also be a terminal device in other systems supporting side communication and relay technology, and the present application is not limited thereto.

In some embodiments of the present application, the fact that the first information is related to the sidelink transmission of the remote terminal may refer to: the first information includes information related to the sidelink transmission of the remote terminal. For example, the first information may include relay terminal-related information, and/or sidelink transmission information between the remote terminal and the relay terminal.

In this embodiment of the present application, the first information may be regarded as a sidelink transmission status report. That is, the remote terminal can report the sidelink transmission status or the information about the relay terminal to the network device through the sidelink transmission status report. Further, the network device may configure an appropriate sidelink signal quality threshold for selecting a relay terminal for the remote terminal based on the above information.

In some embodiments of the present application, the first information includes but is not limited to at least one of the following:

a sidelink signal quality threshold, where the sidelink signal quality threshold is used to select a relay terminal;

Signal quality information of the sidelink between the remote terminal and the relay terminal;

The channel occupancy ratio CBR of the resource pool of the relay terminal;

Time information of the measurement performed by the remote terminal;

Time information for the remote terminal to perform the sidelink transmission;

location information for measurements performed by the remote terminal;

The remote terminal performs the location information of the lateral transmission;

Transmission parameter information between the remote terminal and the relay terminal;

The number of relay terminals satisfying the relay terminal selection condition;

Report the cause value of the first information.

The sidelink signal quality threshold may be a signal quality threshold used by the remote terminal to select the relay terminal.

Optionally, the sidelink signal quality threshold may be, for example, a sidelink Reference Signal Received Power (Reference Signal Receiving Power, RSRP) threshold. Alternatively, it can also be other signal quality thresholds, such as the threshold of the sidelink Reference Signal Receiving Quality (RSRQ), the threshold of the sidelink Signal to Interference plus Noise Ratio (SINR), etc., the present application There is no limit to this.

As an example, for a remote terminal in a connected state, a relay terminal can be selected based on the sideline RSRP threshold (SL-RSRP threshold); The terminal may select a relay terminal based on a sideline discovery RSRP threshold (SL discovery RSRP threshold).

In some embodiments, the signal quality information of the sidelink between the remote terminal and the relay terminal may be RSRP, RSRQ, or SINR of the sidelink between the remote terminal and the relay terminal. The relay terminal here may include a relay terminal that has established a connection with the remote terminal, or a relay terminal that has established a connection with the remote terminal.

In some embodiments, the relay terminals satisfying the relay terminal selection condition may include the relay terminals satisfying the foregoing sidelink signal quality threshold. The terminal device reports the number of relay terminals that meet the selection condition to the network device, so that the network device can adjust the quality threshold of the sidelink signal according to the number of optional relay terminals.

For example, if the remote terminal reports that there are no optional relay terminals, or there are only a few optional relay terminals, the network device may lower the sidelink signal quality threshold so that the remote terminal can select an available relay terminal.

For another example, if the remote terminal reports that there are many optional relay terminals, and the transmission parameter index between the relay terminal and the remote terminal is poor (for example, the average number of transmissions is large), the network device can increase the side The line signal quality threshold is set so that the terminal equipment can select a more suitable relay terminal.

In some embodiments, the channel busy ratio (Channel Busy Ratio, CBR) of the resource pool of the relay terminal may reflect the relay traffic of the relay terminal. The larger CBR of the resource pool of the relay terminal indicates that more remote terminals perform relay services through the relay terminal. Therefore, the remote terminal reports the CBR of the resource pool of the relay terminal to the network device. In this way, the network device can comprehensively consider the traffic of the relay terminal and configure the sidelink signal quality threshold for selecting the relay terminal, which is beneficial to balance the Following the terminal's business volume.

For example, if the CBR of the resource pool of the relay terminal reported by the remote terminal to the network device is large, the network device can configure a larger signal quality threshold, thereby reducing the number of relay links and reducing the traffic of the relay terminal .

In some embodiments, the measurement performed by the remote terminal may refer to the remote terminal measuring the signal quality of the sidelink link between the remote terminal and the relay terminal.

In some embodiments, measurements performed by the remote terminal may refer to measurements that have been performed by the remote terminal. After the remote terminal performs the measurement, it can record the time information and/or location information of the measurement, and further report it to the network device, so as to assist the network device to configure the remote terminal with a suitable side for selecting the relay terminal. Line signal quality threshold.

In some embodiments, the remote terminal performing a sidelink transmission may refer to a sidelink transmission that the remote terminal has performed. After performing the lateral transmission, the remote terminal can record the time information and/or location information of the lateral transmission, and further report it to the network device, so as to assist the network device to configure the remote terminal with a suitable The signal quality threshold of the relay terminal.

In some embodiments, the time information of the measurement performed by the remote terminal may be represented by a time node before the measurement is performed by the remote terminal, or may also be represented by the time when the measurement is performed by the remote terminal.

That is, the time information for the remote terminal to perform the measurement is the time information before the remote terminal performs the measurement, or it may also be the time information when the remote terminal performs the measurement.

In some embodiments, the time information at which the remote terminal performs the sidelink transmission may be represented by a time node before the remote terminal performs the sidelink transmission, or may also be represented by a time when the remote terminal performs the sidelink transmission.

That is, the time information for the remote terminal to perform the sidelink transmission is time information before the remote terminal performs the sidelink transmission, or may be time information when the remote terminal performs the sidelink transmission.

In some embodiments, the location information of the remote terminal performing the measurement may be characterized by a reference location before the remote terminal performs the measurement, or may also be represented by the location when the remote terminal performs the measurement.

That is, the location information for the remote terminal to perform the measurement is the location information before the remote terminal performs the measurement; or, it may also be the location information when the remote terminal performs the measurement.

In some embodiments, the position information of the remote terminal performing the lateral transmission may be characterized by a reference position before the remote terminal performs the lateral transmission, or may also be represented by the position of the remote terminal when the lateral transmission is performed.

That is, the location information of the remote terminal performing the lateral transmission is the location information before the remote terminal performs measurement; or, it may also be the location information when the remote terminal performs the lateral transmission.

In summary, the network device can determine the distribution of relay terminals based on the time information and/or location information based on the above time information and/or location information reported by the remote terminal, combined with the number information that meets the relay terminal selection conditions . For example, in which time period the number of available relay terminals is larger, or in which location range the number of relay terminals is larger, and so on.

It should be understood that in this embodiment of the present application, the transmission parameter information between the remote terminal and the relay terminal may refer to any parameter used to characterize the sidewalk transmission between the remote terminal and the relay terminal. Not limited.

As an example but not a limitation, the transmission parameter information between the remote terminal and the relay terminal includes at least one of the following:

Information on the average number of transmission times of data packets between the remote terminal and the relay terminal;

The average transmission times level of data packets between the remote terminal and the relay terminal;

The average throughput of the sidelink between the remote terminal and the relay terminal.

For example, if the first data packet between the remote terminal and the relay terminal is successfully transmitted once, the number of transmissions of the first data packet is one time, or if the second data packet between the remote terminal and the relay terminal If the packet retransmission succeeds once, the number of transmissions of the second data packet is 2 times, and the remote terminal can count the number of transmissions of multiple data packets with the relay terminal to obtain the number of transmissions between the remote terminal and the relay terminal. The average transmission times information of the data packets.

For another example, the remote terminal may classify the average number of transmission times of data packets between the remote terminal and the relay terminal. For example, the average number of transmissions can be divided into three grades: excellent, neutral, and poor. The average number of transmissions is less than or equal to the first threshold, and the corresponding average number of transmissions is excellent. The average number of transmissions is greater than the second threshold. The corresponding average number of transmissions is The grade is Poor, and the average number of transfers corresponding to the other average transfers is rated Medium. As an example, the first threshold is 1, and the second threshold is 3.

The average transmission times information or the average transmission times level of the data packets between the remote terminal and the relay terminal can reflect the link quality or transmission experience of the sidelink link between the remote terminal and the relay terminal. Less means that the link quality or transmission experience of the sidelink is better; otherwise, it means that the link quality or transmission experience of the sidelink is worse. Therefore, the remote terminal reports the average transmission times information or the average transmission times level information to the network device, and the network device can configure the sidelink signal quality threshold for selecting the relay terminal based on the average transmission times information or the average transmission times, for example, When the average number of transmissions is large, configuring a larger sidelink signal quality threshold will help improve the performance of sidelink transmission.

The average throughput of the sidelink between the remote terminal and the relay terminal can reflect the load of the sidelink. For example, the greater the average throughput, the greater the load of the sidelink, and vice versa. The load on the sidelink is less. Therefore, the remote terminal reports the average throughput of the sidelink between itself and the relay terminal to the network device, and the network device can learn the load of the sidelink based on this. In this way, the network device can comprehensively consider the sidelink throughput. According to the load condition of the road, configure the sidelink signal quality threshold for selecting the relay terminal. For example, if the average throughput reported by the remote terminal to the network device is large, the network device can configure a larger sidelink signal quality threshold, thereby reducing the number of relay links and reducing the traffic of the relay terminal.

In some embodiments, the remote terminal may also indicate to the network device a reason value for reporting the first information (that is, a sidelink transmission status report), or in other words, a reason value for generating the first information. For example, the remote terminal may have a poor sidelink link quality between the relay terminal and the remote terminal, or the sidelink transmission index between the relay terminal and the remote terminal is poor, or there is no optional intermediate link. In the case of a subsequent terminal, report a sidelink transmission status report, or generate the sidelink transmission status report.

In some embodiments, the reason value for the terminal device to report the first information may include but not limited to at least one of the following:

No relay terminal satisfying the relay terminal selection condition is detected;

The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold;

The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold;

The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third times threshold;

A radio link failure (Radio Link Failure, RLF) occurs on the sidelink between the remote terminal and the relay terminal.

Optionally, the first number threshold may be predefined, or configured by the network device, or determined by the terminal device.

Optionally, the second times threshold may be predefined, or configured by the network device, or determined by the terminal device.

Optionally, the third times threshold may be predefined, or configured by the network device, or determined by the terminal device.

In some embodiments of this application, S210 may include:

If the first condition is met, the remote terminal sends the first information.

The first condition may indicate that the quality of the sidelink link between the relay terminal and the remote terminal is poor, or that the sidelink transmission index between the relay terminal and the remote terminal is poor, or that there is no optional relay Arbitrary conditions of the terminal.

As an example and not limitation, the first condition includes at least one of the following:

No relay terminal satisfying the relay terminal selection condition is detected;

The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold;

The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold;

The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third times threshold;

RLF occurs on the sidelink between the remote terminal and the relay terminal.

In some embodiments of the present application, the remote terminal may report the first information through first radio resource control (Radio Resource Control, RRC) signaling. That is, the sidelink transmission status report may be reported through RRC signaling.

For example, for a remote terminal in a connected state, a sidelink transmission status report may be sent to a network device through an uplink information transfer signaling (ULInformationTransfer).

In other embodiments of the present application, S210 includes:

The remote terminal sends second RRC signaling, where the second RRC signaling is used to notify the network device that the first information is stored on the terminal device;

The remote terminal receives an information request message (InformationRequest), where the information request message is used to notify the remote terminal to report the first information;

The remote terminal sends an information response message (InformationResponse), where the information response message includes the first information.

For example, when the remote terminal resides in the first cell, it generates a sidelink transmission report, and then the terminal equipment enters a non-connected state (such as idle (IDLE) state/inactive state (INACTIVE)), after entering the connected state, The terminal device camps on the second cell. In this case, the remote terminal may send a second RRC signaling to the network device corresponding to the second cell to inform the network device that it stores a sidelink transmission report, and the network device passes the InformationRequest When requesting the terminal device to report the side transmission status report, the terminal device reports the side transmission status report through the InformationResponse.

In some embodiments, the first cell is different from the second cell. In this case, the remote terminal may also indicate the cell identity information (eg, CellID) of the first cell to the network device corresponding to the second cell. Further, the network device corresponding to the second cell may forward the sidelink transmission status report to the network device corresponding to the first cell, so that the network device corresponding to the first cell can determine the remote transmission status report according to the sidelink transmission status report. Target sidelink signal quality threshold configured by the terminal.

In some embodiments of the present application, the method 200 also includes:

S202. The network device determines a target sidelink signal quality threshold configured for the remote terminal according to the first information, and the target sidelink signal quality threshold is used to select a relay terminal.

It should be understood that the network device configures the same target sidelink signal quality threshold for all terminal devices, that is, the target sidelink signal quality gate type may be cell-level, or the target sidelink signal quality threshold may also be UE-specific. For example, the target sidelink signal quality threshold configured for the first remote terminal may be determined in combination with the location information of the first remote terminal and sidelink transmission status reports reported by one or more remote terminals.

For example, if the CBR of the resource pool of the relay terminal reported by the remote terminal is greater than the first CBR threshold, indicating that the relay traffic on the relay terminal is relatively large, the network device can raise the sidelink signal quality threshold, for example, set the current The configured sidelink signal quality threshold is increased by 3dB as the target sidelink signal quality threshold, and the target sidelink signal quality threshold is further configured for the remote terminal.

For another example, if the number of relay terminals that meet the relay terminal selection condition reported by the remote terminal is less than the first quantity threshold (for example, 2), or, within the time period corresponding to the time information when the remote terminal performs measurement (or , within the time period corresponding to the time information for performing sidelink transmission) the number of relay terminals that meet the relay terminal selection condition is less than the first quantity threshold, then the network device can lower the sidelink signal quality threshold, for example, the currently configured sidelink The horizontal signal quality threshold is lowered by 3dB as the target sidelink signal quality threshold, and the target sidelink signal quality threshold is further configured for the remote terminal.

For another example, if the number of relay terminals that meet the relay terminal selection condition reported by the remote terminal is greater than a second quantity threshold (for example, 4), but the transmission parameter index between the relay terminal and the remote terminal is poor ( For example, if the average number of transmissions is large, etc.), the network device can increase the sidelink signal quality threshold, for example, increase the currently configured sidelink signal quality threshold by 3dB as the target sidelink signal quality threshold, and further configure the target for the remote terminal Sidewalk signal quality threshold.

For another example, if the remote terminal reports to the network device the location information of the sideline transmission (and/or the measurement to be performed) and the number information of the relay terminals that meet the selection conditions of the relay terminal, then when the remote terminal needs to switch To another relay terminal, the network device can determine the target configured for the remote terminal based on the current location information of the remote terminal and referring to the number of relay terminals around the location information in the sidelink transmission status report The sidelink signal quality threshold further configures the target sidelink signal quality threshold for the remote terminal.

To sum up, the remote terminal can send a sidelink transmission status report to the network device, so that the network device can determine a reasonable sidelink signal quality threshold for relay terminal selection according to the sidelink transmission status report, and further the remote terminal When the relay terminal is selected based on the sidelink signal quality threshold, it is beneficial to select a more suitable relay terminal, thereby ensuring more reliable sidelink transmission.

The method embodiment of the present application is described in detail above in conjunction with FIG. 6 . The device embodiment of the present application is described in detail below in conjunction with FIG. 7 to FIG. 11 . It should be understood that the device embodiment corresponds to the method embodiment, and similar descriptions can be Refer to the method example.

FIG. 7 shows a schematic block diagram of a remote terminal 400 according to an embodiment of the present application. As shown in Figure 7, the remote terminal 400 includes:

The communication unit 410 is configured to send first information, where the first information is related to the sidelink transmission of the remote terminal.

In some embodiments of the present application, the first information includes at least one of the following:

a sidelink signal quality threshold, where the sidelink signal quality threshold is used to select a relay terminal;

Signal quality information of a sidelink link between the remote terminal and the relay terminal;

The channel occupancy ratio CBR of the resource pool of the relay terminal;

The time information of the measurement performed by the remote terminal;

Time information for the remote terminal to perform sidelink transmission;

The location information of the remote terminal performing the measurement;

The location information of the remote terminal performing sidelink transmission;

Transmission parameter information between the remote terminal and the relay terminal;

The number of relay terminals satisfying the relay terminal selection condition;

Report the cause value of the first information.

In some embodiments of the present application, the time information at which the remote terminal performs the measurement is time information before the remote terminal performs the measurement; or

The time information of the measurement performed by the remote terminal is the time information when the measurement is performed by the remote terminal.

In some embodiments of the present application, the time information at which the remote terminal performs sidelink transmission is time information before the remote terminal performs sidelink transmission; or

The time information that the remote terminal performs the sidelink transmission is the time information when the remote terminal performs the sidelink transmission.

In some embodiments of the present application, the location information of the remote terminal performing the measurement is the location information before the remote terminal performs the measurement; or

The location information of the measurement performed by the remote terminal is the location information when the measurement is performed by the remote terminal.

In some embodiments of the present application, the location information of the remote terminal performing the lateral transmission is the location information of the remote terminal before performing the lateral transmission; or

The location information of the remote terminal performing the lateral transmission is the location information when the remote terminal performs the lateral transmission.

In some embodiments of the present application, the transmission parameter information between the remote terminal and the relay terminal includes at least one of the following:

Information on the average number of transmission times of data packets between the remote terminal and the relay terminal;

The average number of transmission times of data packets between the remote terminal and the relay terminal;

The average throughput of the sidelink between the remote terminal and the relay terminal.

In some embodiments of the present application, the reason value for reporting the first information includes at least one of the following:

No relay terminal satisfying the relay terminal selection condition is detected;

The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold;

The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold;

The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold;

A radio link failure RLF occurs on the sidelink between the remote terminal and the relay terminal.

In some embodiments of the present application, the communication unit 410 is also used to:

When the first condition is met, the first information is sent, where the first condition includes at least one of the following:

No relay terminal satisfying the relay terminal selection condition is detected;

The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold;

The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold;

The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold;

RLF occurs on the side link between the remote terminal and the relay terminal.

In some embodiments of the present application, the communication unit 410 is also used to:

Sending first radio resource control RRC signaling, where the first RRC signaling includes the first information.

In some embodiments of the present application, the first RRC signaling includes uplink information transfer signaling.

In some embodiments of the present application, the communication unit 410 is also used to:

Sending second RRC signaling, where the second RRC signaling is used to notify the remote terminal that the first information is stored;

receiving an information request message, where the information request message is used to notify the remote terminal to report the first information;

sending an information response message, where the information response message includes the first information.

In some embodiments of the present application, the information response message further includes cell identity information of the first cell, and the first information is obtained by the remote terminal camping on the first cell.

Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system on chip. The aforementioned processing unit may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the remote terminal in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the remote terminal 400 are respectively in order to realize the The corresponding process of the remote terminal in the method 200 is shown, and for the sake of brevity, details are not repeated here.

Fig. 8 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 500 of FIG. 8 includes:

The communication unit 510 is configured to receive first information sent by the remote terminal, where the first information is related to the sidelink transmission of the remote terminal.

In some embodiments of the present application, the first information includes at least one of the following:

a sidelink signal quality threshold, where the sidelink signal quality threshold is used to select a relay terminal;

Signal quality information of a sidelink link between the remote terminal and the relay terminal;

The channel occupancy ratio CBR of the resource pool of the relay terminal;

The time information of the measurement performed by the remote terminal;

Time information for the remote terminal to perform sidelink transmission;

The location information of the remote terminal performing the measurement;

The location information of the remote terminal performing sidelink transmission;

Transmission parameter information between the remote terminal and the relay terminal;

The number of relay terminals satisfying the relay terminal selection condition;

Report the cause value of the first information.

In some embodiments of the present application, the time information at which the remote terminal performs the measurement is time information before the remote terminal performs the measurement; or

The time information of the measurement performed by the remote terminal is the time information when the measurement is performed by the remote terminal.

In some embodiments of the present application, the time information at which the remote terminal performs sidelink transmission is time information before the remote terminal performs sidelink transmission; or

The time information that the remote terminal performs the sidelink transmission is the time information when the remote terminal performs the sidelink transmission.

In some embodiments of the present application, the location information of the remote terminal performing the measurement is the location information before the remote terminal performs the measurement; or

The location information of the measurement performed by the remote terminal is the location information when the measurement is performed by the remote terminal.

In some embodiments of the present application, the location information of the remote terminal performing the lateral transmission is the location information of the remote terminal before performing the lateral transmission; or

The location information of the remote terminal performing the lateral transmission is the location information when the remote terminal performs the lateral transmission.

In some embodiments of the present application, the transmission parameter information between the remote terminal and the relay terminal includes at least one of the following:

Information on the average number of transmission times of data packets between the remote terminal and the relay terminal;

The average number of transmission times of data packets between the remote terminal and the relay terminal;

The average throughput of the sidelink between the remote terminal and the relay terminal.

In some embodiments of the present application, the reason value for reporting the first information includes at least one of the following:

No relay terminal satisfying the relay terminal selection condition is detected;

The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold;

The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold;

The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold;

A radio link failure RLF occurs on the sidelink between the remote terminal and the relay terminal.

In some embodiments of the present application, the communication unit 510 is also used to:

Receive the first information sent by the remote terminal when a first condition is met, where the first condition includes at least one of the following:

No relay terminal satisfying the relay terminal selection condition is detected;

The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold;

The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold;

The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold;

RLF occurs on the side link between the remote terminal and the relay terminal.

In some embodiments of the present application, the communication unit 510 is also used to:

Receive first radio resource control RRC signaling sent by the remote terminal, where the first RRC signaling includes the first information.

In some embodiments of the present application, the first RRC signaling includes uplink information transfer signaling.

In some embodiments of the present application, the communication unit 510 is also used to:

receiving second RRC signaling sent by the remote terminal, where the second RRC signaling is used to notify the remote terminal that the first information is stored;

sending an information request message to the remote terminal, where the information request message is used to notify the remote terminal to report the first information;

Receive an information response message sent by the remote terminal, where the information response message includes the first information.

In some embodiments of the present application, the information response message further includes cell identity information of the first cell, and the first information is obtained by the remote terminal camping on the first cell.

In some embodiments of the present application, the communication unit 510 is also used to:

Sending the first information to a network device corresponding to the first cell.

In some embodiments of the present application, the network device further includes:

A processing unit, configured to determine a target sidelink signal quality threshold configured for the remote terminal according to the first information, where the target sidelink signal quality threshold is used to select a relay terminal.

Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system on chip. The aforementioned processing unit may be one or more processors.

It should be understood that the network device 500 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 500 are for realizing the method shown in FIG. 6 For the sake of brevity, the corresponding processes of the network devices in 200 will not be repeated here.

FIG. 9 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application. The communication device 600 shown in FIG. 9 includes a processor 610, and the processor 610 can invoke and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 9 , the communication device 600 may further include a memory 620 . Wherein, the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.

Wherein, the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .

Optionally, as shown in FIG. 9, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.

Wherein, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be the network device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 600 may specifically be the remote terminal of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the remote terminal in each method of the embodiment of the present application. Let me repeat.

FIG. 10 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in FIG. 10 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 10 , the chip 700 may further include a memory 720 . Wherein, the processor 710 can invoke and run a computer program from the memory 720, so as to implement the method in the embodiment of the present application.

Wherein, the memory 720 may be an independent device independent of the processor 710 , or may be integrated in the processor 710 .

Optionally, the chip 700 may also include an input interface 730 . Wherein, the processor 710 may control the input interface 730 to communicate with other devices or chips, specifically, may obtain information or data sent by other devices or chips.

Optionally, the chip 700 may also include an output interface 740 . Wherein, the processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

Optionally, the chip can be applied to the remote terminal in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the remote terminal in the methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

Fig. 11 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in FIG. 11 , the communication system 900 includes a terminal device 910 and a network device 920 .

Wherein, the terminal device 910 can be used to realize the corresponding functions realized by the remote terminal in the above method, and the network device 920 can be used to realize the corresponding functions realized by the network device in the above method. repeat.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented 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, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (Static RAM, SRAM), Dynamic Random Access Memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the remote terminal in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the remote terminal in each method of the embodiment of the present application. For the sake of brevity, I won't repeat them here.

The embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, the Let me repeat.

Optionally, the computer program product can be applied to the remote terminal in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the remote terminal in the methods of the embodiments of the present application. For brevity, the This will not be repeated here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program is run on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , which will not be repeated here.

Optionally, the computer program can be applied to the remote terminal in the embodiment of the present application, and when the computer program is run on the computer, the computer executes the corresponding process implemented by the remote terminal in each method of the embodiment of the present application, For the sake of brevity, details are not repeated here.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (62)

A method for wireless communication, comprising: The remote terminal sends first information, where the first information is related to the sidelink transmission of the remote terminal. The method according to claim 1, wherein the first information includes at least one of the following: a sidelink signal quality threshold, where the sidelink signal quality threshold is used to select a relay terminal; Signal quality information of a sidelink link between the remote terminal and the relay terminal; The channel occupancy ratio CBR of the resource pool of the relay terminal; The time information of the measurement performed by the remote terminal; Time information for the remote terminal to perform sidelink transmission; The location information of the remote terminal performing the measurement; The location information of the remote terminal performing sidelink transmission; Transmission parameter information between the remote terminal and the relay terminal; The number of relay terminals satisfying the relay terminal selection condition; Report the cause value of the first information. The method according to claim 2, characterized in that the time information at which the remote terminal performs the measurement is time information before the remote terminal performs the measurement; or The time information of the measurement performed by the remote terminal is the time information when the measurement is performed by the remote terminal. The method according to claim 2 or 3, characterized in that the time information for the remote terminal to perform sidelink transmission is the time information before the remote terminal performs sidelink transmission; or The time information that the remote terminal performs the sidelink transmission is the time information when the remote terminal performs the sidelink transmission. The method according to any one of claims 2-4, wherein the location information of the remote terminal performing the measurement is the location information before the remote terminal performs the measurement; or The location information of the measurement performed by the remote terminal is the location information when the measurement is performed by the remote terminal. The method according to any one of claims 2-5, characterized in that, the location information of the remote terminal performing the sidelink transmission is the location information of the remote terminal before the sidelink transmission is performed; or The location information of the remote terminal performing the lateral transmission is the location information when the remote terminal performs the lateral transmission. The method according to any one of claims 2-6, wherein the transmission parameter information between the remote terminal and the relay terminal includes at least one of the following: Information on the average number of transmission times of data packets between the remote terminal and the relay terminal; The average number of transmission times of data packets between the remote terminal and the relay terminal; The average throughput of the sidelink between the remote terminal and the relay terminal. The method according to any one of claims 2-7, wherein the reason value for reporting the first information includes at least one of the following: No relay terminal satisfying the relay terminal selection condition is detected; The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold; The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold; The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold; A radio link failure RLF occurs on the sidelink between the remote terminal and the relay terminal. The method according to any one of claims 1-8, wherein the sending of the first information by the remote terminal includes: The remote terminal sends the first information when a first condition is met, where the first condition includes at least one of the following: No relay terminal satisfying the relay terminal selection condition is detected; The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold; The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold; The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold; RLF occurs on the side link between the remote terminal and the relay terminal. The method according to any one of claims 1-9, wherein the sending of the first information by the remote terminal includes: The remote terminal sends first radio resource control RRC signaling, where the first RRC signaling includes the first information. The method according to claim 10, wherein the first RRC signaling includes uplink information transfer signaling. The method according to any one of claims 1-11, wherein the sending of the first information by the remote terminal includes: The remote terminal sends second RRC signaling, where the second RRC signaling is used to notify the remote terminal that the first information is stored; The remote terminal receives an information request message, where the information request message is used to notify the remote terminal to report the first information; The remote terminal sends an information response message, where the information response message includes the first information. The method according to claim 12, wherein the information response message further includes cell identification information of the first cell, and the first information is obtained by the remote terminal camping on the first cell. A method for wireless communication, comprising: The network device receives the first information sent by the remote terminal, where the first information is related to the sidelink transmission of the remote terminal. The method according to claim 14, wherein the first information includes at least one of the following: a sidelink signal quality threshold, where the sidelink signal quality threshold is used to select a relay terminal; Signal quality information of a sidelink link between the remote terminal and the relay terminal; The channel occupancy ratio CBR of the resource pool of the relay terminal; The time information of the measurement performed by the remote terminal; Time information for the remote terminal to perform sidelink transmission; The location information of the remote terminal performing the measurement; The location information of the remote terminal performing sidelink transmission; Transmission parameter information between the remote terminal and the relay terminal; The number of relay terminals satisfying the relay terminal selection condition; Report the cause value of the first information. The method according to claim 15, wherein the time information for the remote terminal to perform the measurement is time information before the remote terminal performs the measurement; or The time information of the measurement performed by the remote terminal is the time information when the measurement is performed by the remote terminal. The method according to claim 15 or 16, characterized in that, the time information for the remote terminal to perform the sidelink transmission is the time information before the remote terminal performs the sidelink transmission; or The time information that the remote terminal performs the sidelink transmission is the time information when the remote terminal performs the sidelink transmission. The method according to any one of claims 15-17, wherein the location information of the remote terminal performing the measurement is the location information before the remote terminal performs the measurement; or The time information of the measurement performed by the remote terminal is the location information when the measurement is performed by the remote terminal. The method according to any one of claims 15-18, characterized in that, the location information of the remote terminal performing the sidelink transmission is the location information of the remote terminal before the sidelink transmission is performed; or The time information that the remote terminal performs the lateral transmission is the location information when the remote terminal performs the lateral transmission. The method according to any one of claims 15-19, wherein the transmission parameter information between the remote terminal and the relay terminal includes at least one of the following: Information on the average number of transmission times of data packets between the remote terminal and the relay terminal; The average number of transmission times of data packets between the remote terminal and the relay terminal; The average throughput of the sidelink between the remote terminal and the relay terminal. The method according to any one of claims 15-20, wherein the reason value for reporting the first information includes at least one of the following: No relay terminal satisfying the relay terminal selection condition is detected; The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold; The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold; The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold; A radio link failure RLF occurs on the sidelink between the remote terminal and the relay terminal. The method according to any one of claims 14-21, wherein the network device receiving the first information sent by the remote terminal includes: The network device receives the first information sent by the remote terminal when a first condition is met, where the first condition includes at least one of the following: No relay terminal satisfying the relay terminal selection condition is detected; The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold; The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold; The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold; RLF occurs on the side link between the remote terminal and the relay terminal. The method according to any one of claims 14-22, wherein the network device receiving the first information sent by the remote terminal includes: The network device receives first radio resource control RRC signaling sent by the remote terminal, where the first RRC signaling includes the first information. The method according to claim 23, wherein the first RRC signaling includes uplink information transfer signaling. The method according to any one of claims 14-24, wherein the network device receiving the first information sent by the remote terminal includes: The network device receives second RRC signaling sent by the remote terminal, where the second RRC signaling is used to notify the remote terminal that the first information is stored; The network device sends an information request message to the remote terminal, where the information request message is used to notify the remote terminal to report the first information; The network device receives an information response message sent by the remote terminal, where the information response message includes the first information. The method according to claim 25, wherein the information response message further includes cell identity information of the first cell, and the first information is obtained by the remote terminal camping on the first cell. The method according to claim 26, further comprising: The network device sends the first information to a network device corresponding to the first cell. The method according to any one of claims 14-27, further comprising: The network device determines a target sidelink signal quality threshold configured for the remote terminal according to the first information, and the target sidelink signal quality threshold is used to select a relay terminal. A remote terminal, characterized in that it comprises: A communication unit, configured to send first information, where the first information is related to the sidelink transmission of the remote terminal. The remote terminal according to claim 29, wherein the first information includes at least one of the following: a sidelink signal quality threshold, where the sidelink signal quality threshold is used to select a relay terminal; Signal quality information of a sidelink link between the remote terminal and the relay terminal; The channel occupancy ratio CBR of the resource pool of the relay terminal; The time information of the measurement performed by the remote terminal; Time information for the remote terminal to perform sidelink transmission; The location information of the remote terminal performing the measurement; The location information of the remote terminal performing sidelink transmission; Transmission parameter information between the remote terminal and the relay terminal; The number of relay terminals satisfying the relay terminal selection condition; Report the cause value of the first information. The remote terminal according to claim 30, wherein the time information for the remote terminal to perform the measurement is the time information before the remote terminal performs the measurement; or The time information of the measurement performed by the remote terminal is the time information when the measurement is performed by the remote terminal. The remote terminal according to claim 30 or 31, characterized in that, the time information for the remote terminal to perform sidelink transmission is the time information before the remote terminal performs sidelink transmission; or The time information that the remote terminal performs the sidelink transmission is the time information when the remote terminal performs the sidelink transmission. The remote terminal according to any one of claims 30-32, wherein the location information of the remote terminal performing the measurement is the location information before the remote terminal performs the measurement; or The time information of the measurement performed by the remote terminal is the location information when the measurement is performed by the remote terminal. The remote terminal according to any one of claims 30-33, wherein the location information of the remote terminal performing sidelink transmission is the location information of the remote terminal before performing sidelink transmission; or The time information that the remote terminal performs the lateral transmission is the location information when the remote terminal performs the lateral transmission. The remote terminal according to any one of claims 30-34, wherein the transmission parameter information between the remote terminal and the relay terminal includes at least one of the following: Information on the average number of transmission times of data packets between the remote terminal and the relay terminal; The average number of transmission times of data packets between the remote terminal and the relay terminal; The average throughput of the sidelink between the remote terminal and the relay terminal. The remote terminal according to any one of claims 30-35, wherein the reason value for reporting the first information includes at least one of the following: No relay terminal satisfying the relay terminal selection condition is detected; The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold; The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold; The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold; A radio link failure RLF occurs on the sidelink between the remote terminal and the relay terminal. The remote terminal according to any one of claims 29-36, wherein the communication unit is further used for: When the first condition is met, the first information is sent, where the first condition includes at least one of the following: No relay terminal satisfying the relay terminal selection condition is detected; The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold; The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold; The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold; RLF occurs on the side link between the remote terminal and the relay terminal. The remote terminal according to any one of claims 29-37, wherein the communication unit is further used for: Sending first radio resource control RRC signaling, where the first RRC signaling includes the first information. The remote terminal according to claim 38, wherein the first RRC signaling includes uplink information transfer signaling. The remote terminal according to any one of claims 29-39, wherein the communication unit is further used for: Sending second RRC signaling, where the second RRC signaling is used to notify the remote terminal that the first information is stored; receiving an information request message, where the information request message is used to notify the remote terminal to report the first information; sending an information response message, where the information response message includes the first information. The remote terminal according to claim 40, wherein the information response message further includes cell identification information of the first cell, and the first information is acquired by the remote terminal in the first cell of. A network device, characterized in that it includes: The communication unit is configured to receive the first information sent by the remote terminal, where the first information is related to the sidelink transmission of the remote terminal. The network device according to claim 42, wherein the first information includes at least one of the following: a sidelink signal quality threshold, where the sidelink signal quality threshold is used to select a relay terminal; Signal quality information of a sidelink link between the remote terminal and the relay terminal; The channel occupancy ratio CBR of the resource pool of the relay terminal; The time information of the measurement performed by the remote terminal; Time information for the remote terminal to perform sidelink transmission; The location information of the remote terminal performing the measurement; The location information of the remote terminal performing sidelink transmission; Transmission parameter information between the remote terminal and the relay terminal; The number of relay terminals satisfying the relay terminal selection condition; Report the cause value of the first information. The network device according to claim 43, wherein the time information for the remote terminal to perform the measurement is time information before the remote terminal performs the measurement; or The time information of the measurement performed by the remote terminal is the time information when the measurement is performed by the remote terminal. The network device according to claim 43 or 44, characterized in that, the time information for the remote terminal to perform sidelink transmission is the time information before the remote terminal performs sidelink transmission; or The time information that the remote terminal performs the sidelink transmission is the time information when the remote terminal performs the sidelink transmission. The network device according to any one of claims 43-45, wherein the location information of the remote terminal performing the measurement is the location information before the remote terminal performs the measurement; or The time information of the measurement performed by the remote terminal is the location information when the measurement is performed by the remote terminal. The network device according to any one of claims 43-46, wherein the location information of the remote terminal performing sidelink transmission is the location information of the remote terminal before performing sidelink transmission; or The time information that the remote terminal performs the lateral transmission is the location information when the remote terminal performs the lateral transmission. The network device according to any one of claims 43-47, wherein the transmission parameter information between the remote terminal and the relay terminal includes at least one of the following: Information on the average number of transmission times of data packets between the remote terminal and the relay terminal; The average number of transmission times of data packets between the remote terminal and the relay terminal; The average throughput of the sidelink between the remote terminal and the relay terminal. The network device according to any one of claims 43-48, wherein the reason value for reporting the first information includes at least one of the following: No relay terminal satisfying the relay terminal selection condition is detected; The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold; The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold; The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold; A radio link failure RLF occurs on the sidelink between the remote terminal and the relay terminal. The network device according to any one of claims 42-49, wherein the communication unit is further configured to: Receive the first information sent by the remote terminal when a first condition is met, where the first condition includes at least one of the following: No relay terminal satisfying the relay terminal selection condition is detected; The number of retransmissions of a single data packet between the remote terminal and the relay terminal is greater than the first number threshold; The cumulative number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the second threshold; The average number of retransmissions of multiple data packets between the remote terminal and the relay terminal is greater than the third threshold; RLF occurs on the side link between the remote terminal and the relay terminal. The network device according to any one of claims 42-50, wherein the communication unit is further configured to: Receive first radio resource control RRC signaling sent by the remote terminal, where the first RRC signaling includes the first information. The network device according to claim 51, wherein the first RRC signaling includes uplink information transfer signaling. The network device according to any one of claims 42-52, wherein the communication unit is further configured to: receiving second RRC signaling sent by the remote terminal, where the second RRC signaling is used to notify the remote terminal that the first information is stored; sending an information request message to the remote terminal, where the information request message is used to notify the remote terminal to report the first information; Receive an information response message sent by the remote terminal, where the information response message includes the first information. The network device according to claim 53, wherein the information response message further includes cell identification information of the first cell, and the first information is obtained by the remote terminal staying in the first cell . The network device according to claim 54, wherein the communication unit is further used for: Sending the first information to a network device corresponding to the first cell. The network device according to any one of claims 42-55, wherein the network device further comprises: A processing unit, configured to determine a target sidelink signal quality threshold configured for the remote terminal according to the first information, where the target sidelink signal quality threshold is used to select a relay terminal. A remote terminal, characterized in that it includes: a processor and a memory, the memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory, to perform the tasks described in claims 1 to 13 any one of the methods described. A network device, characterized by comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to invoke and run the computer program stored in the memory, and execute any of the following claims 14 to 28 one of the methods described. A chip, characterized in that it includes: a processor, used to call and run a computer program from a memory, so that the device installed with the chip executes the method according to any one of claims 1 to 13, or as described in A method as claimed in any one of claims 14 to 28. A computer-readable storage medium, characterized in that it is used to store a computer program, the computer program causes a computer to perform the method according to any one of claims 1 to 13, or any one of claims 14 to 28 method described in the item. A computer program product, characterized in that it includes computer program instructions, the computer program instructions cause the computer to perform the method as described in any one of claims 1 to 13, or as described in any one of claims 14 to 28 Methods. A computer program, characterized in that the computer program causes a computer to execute the method according to any one of claims 1-13, or the method according to any one of claims 14-28.

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