CN111565459B - A communication method and device - Google Patents

Abstract

The embodiment of the application provides a communication method and a device, relates to the technical field of communication, and is used for effectively utilizing resources allocated by network equipment to a terminal. The method comprises the following steps: the terminal receives Timing Advance (TA) information from network equipment in a random access process; the terminal sends first indication information to the network equipment in the random access process. The first indication information is used for indicating a random access process to update the TA, and/or the first indication information is used for requesting to reserve the first preconfigured uplink resource PUR.

Description

A communication method and device

Technical Field

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

Background Art

With the development of wireless communication technology, the Internet of Things (IoT) has become more and more common in people's daily lives. The so-called Internet of Things refers to the communication network that connects things to things. Among them, narrowband Internet of Things (NB-IoT) and machine type communications (MTC) are two IoT technologies with great application prospects. Typical IoT applications include smart grids, smart agriculture, smart transportation, smart homes, and environmental detection. Since the Internet of Things needs to be applied in a variety of scenarios, such as from outdoor to indoor, from above ground to underground, many special requirements are put forward for the design of the Internet of Things. The terminals in the Internet of Things are idle most of the time. Occasionally, some status information needs to be reported, such as the status of street lights, water and electricity meters, etc.

In order to reduce signaling overhead, the base station can allocate preconfigured uplink resources (PUR) to the terminal. The terminal in idle state can transmit uplink data to the base station on the PUR. After transmitting the uplink data, the terminal can directly enter the sleep state. If the idle terminal uses PUR for uplink transmission, it needs to have correct timing advance (TA). The purpose of TA is to enable the uplink transmissions sent by terminals at different distances from the base station to arrive at the base station at the same time or the arrival time is within the cyclic prefix (CP) range.

TA is determined by the distance between the terminal and the base station. As the terminal moves, the terminal needs to update TA to maintain uplink synchronization. In the current prior art, the terminal can obtain TA through the random access process shown in Figure 1 or the random access response (RAR), also known as message 2 (Msg2) in the Early Data Transmission (EDT) technology as shown in Figure 2. For the scheme shown in Figure 1 or Figure 2, after the random access process, the terminal can establish a radio resource control (RRC) connection with the base station. In this way, the terminal can enter a connected state. Then the base station can allocate uplink resources to the terminal.

However, if the terminal only wants to update the TA and continue to use the PUR to transmit uplink data to the base station, then if the base station allocates uplink resources to the terminal, it may cause a waste of resources.

Summary of the invention

The embodiments of the present application provide a communication method and apparatus for effectively utilizing resources allocated by a base station to a terminal.

In order to achieve the above objectives, the present application provides the following technical solutions:

In a first aspect, an embodiment of the present application provides a communication method, including: a terminal receives timing advance TA information from a network device during a random access process. The terminal sends first indication information to the network device during the random access process, wherein the first indication information is used to indicate that the random access process is used to update the TA, and/or the first indication information is used to request to reserve a first pre-configured uplink resource PUR.

An embodiment of the present application provides a communication method, which obtains TA information sent by a network device through a terminal, and then the terminal sends a first indication information to the network device during a random access process, which is used to indicate that the random access process is used to update the TA, and/or, which is used to indicate that the first preconfigured uplink resource PUR allocated to the terminal is reserved. This can facilitate the network device to determine that the purpose of the terminal performing the random access process is to update the TA, so that the network device can not establish an RRC connection for the terminal, thereby avoiding signaling waste caused during the establishment of the RRC connection, and avoiding allocating resources for uplink transmission to the terminal after the terminal enters the connection state. And/or, the network device can determine whether to retain the first PUR allocated to the terminal based on the first indication information.

In a possible implementation manner, the terminal receives the timing advance TA information from the network device during a random access process, including: the terminal receives the TA information carried in a message 2 during the random access process.

In a possible implementation manner, the terminal sends first indication information to the network device during the random access process, including: the terminal sends message 3 during the random access process to the network device, and the first indication information is carried in message 3.

In a possible implementation, the method provided by the embodiment of the present application further includes: the terminal receives second indication information from the network device, the second indication information is used to indicate the release of the first PUR. It is convenient for the terminal to determine that the first PUR is released according to the second indication information, so as not to send uplink data on the first PUR in the idle state.

In a possible implementation manner, the terminal receives the second indication information from the network device, including: the terminal receives a message 4 from the network device during the random access process, and the second indication information is carried in the message 4. Signaling overhead can be reduced.

In a possible implementation, the method provided by the embodiment of the present application further includes: the terminal sends retention time information indicating the first PUR to the network device. By providing the retention time information, the network device can determine that the first PUR can be released when the retention time indicated by the retention time information arrives.

In a possible implementation, the first indication information provided in the embodiment of the present application is also used to request the network device to allocate a second PUR to the terminal. Alternatively, the first indication information is also used to request the network device not to allocate a second PUR to the terminal. In the case where the terminal does not have a second PUR or the network device has not allocated any PUR to the terminal, the terminal can facilitate the network device to determine that the terminal supports the PUR capability by sending the first indication information for requesting the second PUR to the network device. This facilitates the network device to allocate the second PUR to the terminal. Alternatively, the terminal can facilitate the network device to determine that the terminal does not support the PUR capability by sending the first indication information for requesting not to allocate the second PUR to the network device, thereby not allocating the second PUR to the terminal. This avoids the waste of resources caused by the network device blindly allocating PUR to the terminal because it is not sure whether the terminal supports the PUR capability.

In a second aspect, the method provided by the embodiment of the present application further includes: the terminal receives timing advance TA information from the network device during the random access process. The terminal sends first indication information to the network device during the random access process. The first indication information is used to request the network device to allocate a second PUR to the terminal, or to request the network device not to allocate a second PUR to the terminal.

In a possible implementation manner, the terminal receives the timing advance TA information from the network device during a random access process, including: the terminal receives the TA information carried in a message 2 during the random access process.

In a possible implementation manner, the first indication information is further used to indicate one or more of the following information: the service sent on the second PUR is a periodic service or a non-periodic service, and the second PUR is a shared PUR or a dedicated PUR.

It should be understood that the terminal in the first aspect of the embodiment of the present application can also execute the process executed by the terminal in the second aspect. That is, the first aspect and the second aspect can be implemented in combination.

In a third aspect, an embodiment of the present application provides a communication method, including: a network device sends timing advance TA information to a terminal during a random access process. The network device receives first indication information from the terminal during the random access process. The first indication information is used to indicate that the random access process is used to update the TA, and/or the first indication information is used to request to reserve a first preconfigured uplink resource PUR allocated to the terminal.

In a possible implementation manner, the network device sends timing advance TA information to the terminal during a random access process, including: the network device sends the TA information carried in message 2 during the random access process to the terminal.

In a possible implementation manner, the network device receives first indication information from the terminal during the random access process, including: the network device receives message 3 from the terminal during the random access process, and the first indication information is carried in message 3.

In a possible implementation, the method provided in the embodiment of the present application further includes: the network device sends second indication information to the terminal. The second indication information is used to indicate the release of the first PUR.

In a possible implementation manner, the network device sends the second indication information to the terminal, including: the network device sends a message 4 to the terminal during the random access process, and the second indication information is carried in the message 4.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: the network device receives retention time information indicating the first PUR from the terminal.

In a fourth aspect, an embodiment of the present application provides a communication method, including: a network device sends timing advance TA information to a terminal during a random access process. The network device receives first indication information from the terminal during the random access process. The first indication information is used to request the network device to allocate a second PUR to the terminal, or to request the network device not to allocate a second PUR to the terminal.

In a possible implementation manner, the network device sends timing advance TA information to the terminal during a random access process, including: the network device sends the TA information carried in message 2 during the random access process to the terminal.

In a possible implementation manner, the method provided in the embodiment of the present application further includes: the network device sends configuration information of the second PUR to the terminal through the second indication information.

In a possible implementation manner, the network device sends the second indication information to the terminal, including: the network device sends a message 4 to the terminal during a random access process, and the second indication information is carried in the message 4.

In a fifth aspect, an embodiment of the present application provides a communication method, comprising: a terminal in an idle state receives first indication information from a network device. The first indication information is used to notify the release of a preconfigured uplink resource PUR allocated to the terminal. The terminal sends a preamble sequence to the network device. The preamble sequence is used to indicate confirmation of the first indication information.

The embodiment of the present application provides a communication method, in which a terminal in an idle state receives first indication information from a network device and feeds back a leading sequence to the network device, so that the network device side can determine that the terminal has received the first indication information according to the leading sequence.

In a possible implementation, the method provided in the embodiment of the present application further includes: the terminal receives information about a first resource from a network device. The first resource is used by the terminal to send a preamble sequence, and the first resource is a non-contention resource.

In a possible implementation manner, the terminal sends a preamble sequence to a network device, including: the terminal sends the preamble sequence to a base station on a first resource.

In a sixth aspect, an embodiment of the present application provides a communication method, comprising: a network device sends a first indication message to a terminal in an idle state. The first indication message is used to notify the release of a preconfigured uplink resource allocated to the terminal. The network device receives a leading sequence from the terminal. The leading sequence is used to indicate confirmation of the first indication message.

In a possible implementation, the method provided in the embodiment of the present application further includes: in response to the preamble sequence, the network device releases the PUR of the terminal.

In a possible implementation, the method provided in the embodiment of the present application further includes: the network device sends information of a first resource to the terminal. The first resource is used by the terminal to send a preamble sequence, and the first resource is a non-contention resource.

In a possible implementation manner, the network device receives a preamble sequence from a terminal, including: the network device receives the preamble sequence from the terminal on a first resource.

In the seventh aspect, an embodiment of the present application provides a communication device, which may be a terminal or a chip in a terminal. The communication device may include a receiving unit and a sending unit. When the communication device is a terminal, the receiving unit may be a receiver, and the sending unit may be a transmitter. The transmitter may be integrated with the receiver and is called a transceiver. The communication device may also include a processing unit and a storage unit. The storage unit may be a memory. The storage unit is used to store instructions. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit so that the terminal implements a communication method described in the first aspect or any possible implementation of the first aspect. When the communication device is a chip in a terminal, the processing unit may be a processor, and the receiving unit and the sending unit may be communication interfaces. For example, the communication interface in the chip may be an input/output interface, a pin or a circuit, etc. The processing unit executes the instructions stored in the storage unit so that the terminal implements a communication method described in the first aspect or any possible implementation of the first aspect. The storage unit can be a storage unit within the chip (for example, a register, a cache, etc.) or a storage unit within the terminal that is located outside the chip (for example, a read-only memory, a random access memory, etc.).

In an eighth aspect, an embodiment of the present application provides a communication device, which may be a terminal or a chip in a terminal. The communication device may include a receiving unit and a sending unit. When the communication device is a terminal, the receiving unit may be a receiver, and the sending unit may be a transmitter. The transmitter may be integrated with the receiver and is referred to as a transceiver. The communication device may also include a processing unit and a storage unit. The storage unit may be a memory. The storage unit is used to store instructions. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit so that the terminal implements a communication method described in the second aspect or any possible implementation of the second aspect. When the communication device is a chip in a terminal, the processing unit may be a processor, and the receiving unit and the sending unit may be communication interfaces. For example, the communication interface in the chip may be an input/output interface, a pin or a circuit, etc. The processing unit executes the instructions stored in the storage unit so that the terminal implements a communication method described in the second aspect or any possible implementation of the second aspect. The storage unit can be a storage unit within the chip (for example, a register, a cache, etc.) or a storage unit within the terminal that is located outside the chip (for example, a read-only memory, a random access memory, etc.).

In the ninth aspect, an embodiment of the present application provides a communication device, which may be a network device or a chip in a network device. The communication device may include a sending unit and a receiving unit. When the communication device is a network device, the sending unit may be a transmitter. The receiving unit may be a receiver. Generally, the transmitter and the receiver in a network device may be integrated together and referred to as a transceiver. The communication device may also include a processing unit and a storage unit. The storage unit may be a memory. The storage unit is used to store instructions. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit so that the network device implements a communication method described in the third aspect or any possible implementation of the third aspect. When the communication device is a chip in a network device, the processing unit may be a processor, and the sending unit and the receiving unit may be communication interfaces. For example, the communication interface of the chip in the network device may be an input/output interface, a pin or a circuit, etc. The processing unit executes the instructions stored in the storage unit so that the network device implements a communication method described in the third aspect or any possible implementation of the third aspect. The storage unit can be a storage unit within the chip (for example, a register, a cache, etc.), or it can be a storage unit within the network device that is located outside the chip (for example, a read-only memory, a random access memory, etc.).

In the tenth aspect, an embodiment of the present application provides a communication device, which may be a network device or a chip in a network device. The communication device may include a sending unit and a receiving unit. When the communication device is a network device, the sending unit may be a transmitter. The receiving unit may be a receiver. Generally, the transmitter and the receiver in the network device may be integrated together and referred to as a transceiver. The communication device may also include a processing unit and a storage unit. The storage unit may be a memory. The storage unit is used to store instructions. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit so that the network device implements a communication method described in the fourth aspect or any possible implementation of the fourth aspect. When the communication device is a chip in a network device, the processing unit may be a processor, and the sending unit and the receiving unit may be communication interfaces. For example, the communication interface of the chip in the network device may be an input/output interface, a pin or a circuit, etc. The processing unit executes the instructions stored in the storage unit so that the network device implements a communication method described in the fourth aspect or any possible implementation of the fourth aspect. The storage unit can be a storage unit within the chip (for example, a register, a cache, etc.), or it can be a storage unit within the network device that is located outside the chip (for example, a read-only memory, a random access memory, etc.).

In the eleventh aspect, an embodiment of the present application provides a communication device, which may be a terminal or a chip in a terminal. The communication device may include a receiving unit and a sending unit. When the communication device is a terminal, the receiving unit may be a receiver, and the sending unit may be a transmitter. The transmitter may be integrated with the receiver and is called a transceiver. The communication device may also include a processing unit and a storage unit. The storage unit may be a memory. The storage unit is used to store instructions. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit so that the terminal implements a communication method described in the fifth aspect or any possible implementation of the fifth aspect. When the communication device is a chip in a terminal, the processing unit may be a processor, and the receiving unit and the sending unit may be communication interfaces. For example, the communication interface in the chip may be an input/output interface, a pin or a circuit, etc. The processing unit executes the instructions stored in the storage unit so that the terminal implements a communication method described in the fifth aspect or any possible implementation of the fifth aspect. The storage unit can be a storage unit within the chip (for example, a register, a cache, etc.) or a storage unit within the terminal that is located outside the chip (for example, a read-only memory, a random access memory, etc.).

In the twelfth aspect, an embodiment of the present application provides a communication device, which may be a network device or a chip in a network device. The communication device may include a sending unit and a receiving unit. When the communication device is a network device, the sending unit may be a transmitter. The receiving unit may be a receiver. Usually, the transmitter and receiver in a network device can be integrated together and called a transceiver. The communication device may also include a processing unit and a storage unit. The storage unit may be a memory. The storage unit is used to store instructions. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit so that the network device implements a communication method described in the sixth aspect or any possible implementation of the sixth aspect. When the communication device is a chip in a network device, the processing unit may be a processor, and the sending unit and the receiving unit may be communication interfaces. For example, the communication interface of the chip in the network device may be an input/output interface, a pin or a circuit, etc. The processing unit executes the instructions stored in the storage unit so that the network device implements a communication method described in the sixth aspect or any possible implementation of the sixth aspect. The storage unit can be a storage unit within the chip (for example, a register, a cache, etc.) or a storage unit within the network device that is located outside the chip (for example, a read-only memory, a random access memory, etc.).

In the thirteenth aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is run on a computer, the computer executes a communication method described in any possible implementation of any one of the first aspect, the second aspect, the third aspect, the fourth aspect, the fifth aspect or the sixth aspect.

In the fourteenth aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when the instructions are executed on a computer, enables the computer to execute a communication method described in any possible implementation of any one of the first aspect, the second aspect, the third aspect, the fourth aspect, the fifth aspect or the sixth aspect.

In the fifteenth aspect, an embodiment of the present application provides a communication system, which includes: the terminal described in the seventh aspect and various possible implementations, and the network device described in the ninth aspect and various possible implementations of the ninth aspect.

In the sixteenth aspect, an embodiment of the present application provides a communication system, which includes: the terminal described in the eighth aspect and various possible implementations, and the network device described in the tenth aspect and various possible implementations of the tenth aspect.

In the seventeenth aspect, an embodiment of the present application provides a communication system, which includes: the terminal described in the eleventh aspect and various possible implementations, and the network device described in the twelfth aspect and various possible implementations of the twelfth aspect.

In the eighteenth aspect, an embodiment of the present application provides a communication device, which includes a processor and a storage medium, wherein the storage medium stores instructions, and when the instructions are executed by the processor, the communication method described in the first aspect or various possible implementation methods of the first aspect is implemented.

In the nineteenth aspect, an embodiment of the present application provides a communication device, which includes a processor and a storage medium, wherein the storage medium stores instructions, and when the instructions are executed by the processor, the communication method described in the second aspect or various possible implementation methods of the second aspect is implemented.

In the twentieth aspect, an embodiment of the present application provides a communication device, which includes a processor and a storage medium, wherein the storage medium stores instructions, and when the instructions are executed by the processor, the communication method described in the third aspect or various possible implementation methods of the third aspect is implemented.

In the twenty-first aspect, an embodiment of the present application provides a communication device, which includes a processor and a storage medium, wherein the storage medium stores instructions, and when the instructions are executed by the processor, the communication method described in the fourth aspect or various possible implementation methods of the fourth aspect is implemented.

In the twenty-second aspect, an embodiment of the present application provides a communication device, which includes a processor and a storage medium, wherein the storage medium stores instructions, and when the instructions are executed by the processor, the communication method described in the fifth aspect or various possible implementation methods of the fifth aspect is implemented.

In the twenty-third aspect, an embodiment of the present application provides a communication device, which includes a processor and a storage medium, wherein the storage medium stores instructions, and when the instructions are executed by the processor, the communication method described in the sixth aspect or various possible implementation methods of the sixth aspect is implemented.

In the twenty-fourth aspect, an embodiment of the present application provides a communication device, comprising: a processor, the processor is coupled to a memory, the memory is used to store a computer program or instructions, and the processor is used to execute the computer program or instructions in the memory, so that the communication device executes the communication method described in various possible embodiments of any one of the first aspect, the second aspect, the third aspect, the fourth aspect, the fifth aspect or the sixth aspect.

In an optional implementation, the communication device in the embodiment of the present application may also include a transceiver and a memory.

It should be understood that when the communication device described in the twenty-fourth aspect corresponds to the first aspect and various possible implementations of the first aspect, the communication device may be a terminal or a device applied in a terminal. For example, the device applied in a terminal may be a chip, a chip system, or a circuit system. When the communication device described in the twenty-fourth aspect corresponds to the second aspect and various possible implementations of the second aspect, the communication device may be a terminal or a device applied in a terminal. For example, the device applied in a terminal may be a chip, a chip system, or a circuit system. When the communication device described in the twenty-fourth aspect corresponds to the third aspect and various possible implementations of the third aspect, the communication device may be a network device or a device applied in a network device. For example, the device applied in a network device may be a chip, a chip system, or a circuit system. When the communication device described in the twenty-fourth aspect corresponds to the fourth aspect and various possible implementations of the fourth aspect, the communication device may be a network device or a device applied in a network device. For example, the device applied in a network device may be a chip, a chip system, or a circuit system. When the communication device described in the twenty-fourth aspect corresponds to the fifth aspect and various possible implementations of the fifth aspect, the communication device may be a terminal or a device applied in a terminal. For example, the device applied in a terminal may be a chip, a chip system, or a circuit system. When the communication device described in the twenty-fourth aspect corresponds to the sixth aspect and various possible implementations of the sixth aspect, the communication device may be a network device, or a device applied to a network device. For example, the device applied to a network device may be a chip, a chip system, or a circuit system.

The beneficial effects of the second to twenty-fourth aspects of the present application and their various implementations can be referred to the analysis of the beneficial effects of the first aspect and its various implementations, and will not be repeated here.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a flowchart of a random access process provided by an embodiment of the present application;

FIG2 is a second flow diagram of a random access process provided in an embodiment of the present application;

FIG3 is a schematic diagram of the structure of a communication system provided in an embodiment of the present application;

FIG4 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

FIG5 is a schematic diagram of a TA provided in an embodiment of the present application;

FIG6 is a flow chart of a communication method according to an embodiment of the present application;

FIG7 is a second flow chart of a communication method provided in an embodiment of the present application;

FIG8 is a third flow chart of a communication method provided in an embodiment of the present application;

FIG9 is a fourth flow chart of a communication method provided in an embodiment of the present application;

FIG10 is a flow chart of a communication method according to an embodiment of the present application;

FIG11 is a sixth flow chart of a communication method provided in an embodiment of the present application;

FIG12 is a first structural diagram of a communication device provided in an embodiment of the present application;

FIG13 is a second structural diagram of a communication device provided in an embodiment of the present application;

FIG14 is a third structural diagram of a communication device provided in an embodiment of the present application;

FIG15 is a fourth structural diagram of a communication device provided in an embodiment of the present application;

FIG16 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.

DETAILED DESCRIPTION

In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and effects. For example, the first PUR and the second PUR are only used to distinguish different PURs, and their order is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

It should be noted that, in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in this application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

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

The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. It is known to those skilled in the art that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems. In the embodiments of the present application, the method provided is applied to a new radio (NR) system or a 5G network as an example for explanation.

In this application, "at least one" means one or more, and "plurality" means two or more. "And/or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character "/" generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple.

As shown in Fig. 3, an embodiment of the present application provides a communication system, which includes: a network device 100 and one or more terminals 200 communicating with the network device 100. It should be understood that only one terminal and network device are shown in Fig. 3. In actual processes, there may be more network devices and terminals.

The terminal 200 can be connected to the network device 100 in a wireless manner and can be accessed to the core network through the network device 100. The terminal 200 can be fixed or movable. FIG3 is only a schematic diagram, and the communication system can also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG3. The embodiments of the present application do not limit the number of terminals 200 and network devices 100 included in the communication system.

It should be noted that the communication system shown in FIG3 may further include: a core network. The network device 100 may be connected to the core network. The core network may be a 4G core network (e.g., an Evolved Packet Core (EPC)) or a 5G core network (5G Core, 5GC), or a core network in various future communication systems.

Taking the core network as an example, the network device 100 may be an evolved Node B (eNB or eNodeB) in the 4G system. The terminal 200 is a terminal that can transmit information with the eNB. The eNB accesses the EPC network through the S1 interface.

Taking the core network as an example, the 5G core network, the network device 100 may be the next generation node B (gNB) in the NR system, and the terminal 200 may be a terminal that can transmit information with the gNB. The gNB accesses the 5GC through the NG interface.

There may be different names in different communication systems. For example, the network device 100 may also be a third generation partnership project (3GPP) protocol base station, or may be a non-3GPP protocol base station.

The terminal 200 can establish a connection with the network device 100 and obtain uplink synchronization through a random access procedure, and then can send uplink data to the connected network device 100.

Terminal 200 is a device with wireless communication function, which can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted, and can also be a sensor device. It can also be deployed on the water surface (such as ships, etc.). It can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.). The terminal can also be called user equipment (UE), access terminal (Access Terminal), user unit (User Unit), user station (User Station), mobile station (MobileStation), mobile station (Mobile), remote station (Remote Station), remote terminal (Remote Terminal), mobile equipment (Mobile Equipment), user terminal (User Terminal), wireless communication equipment (Wireless Telecom Equipment), user agent (User Agent), user equipment (User Equipment) or user device. The terminal 200 may be a station (STA) in a wireless local area network (WLAN), a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, and a terminal in a next-generation communication system (e.g., a fifth-generation (5G) communication network) or a terminal in a future-evolved public land mobile network (PLMN) network, etc. Among them, 5G can also be referred to as a new radio (NR).

In addition, the terminal 200 can also be: a wearable device, which is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, etc., as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring. For example, smart watches, smart bracelets, pedometers, etc. Vehicle-mounted equipment (e.g., automobiles, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), virtual reality (VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control, smart home equipment (e.g., refrigerators, televisions, air conditioners, electric meters, etc.), intelligent robots, workshop equipment, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, flight equipment (e.g., intelligent robots, hot air balloons, drones, airplanes), etc. In this application, for the sake of ease of description, chips deployed in the above-mentioned devices, such as system-on-a-chip (SOC), baseband chips, etc., or other chips with communication functions can also be referred to as terminals.

The network device in the embodiment of the present application can be a device for communicating with a terminal. The network device can be a base station (base transceiver station, BTS) in a global system for mobile communications (GSM) system or code division multiple access (CDMA), or a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolved base station (evoled NodeB, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a future 5G network, or a network device in a future evolved PLMN network, etc., and the embodiment of the present application is not limited.

As shown in Figure 4, Figure 4 shows a schematic diagram of the hardware structure of a communication device provided in an embodiment of the present application. The hardware structure of the terminal 200 and the network device 100 in the embodiment of the present application can refer to the structure shown in Figure 4. The communication device includes a processor 41.

Optionally, the communication device may further include: a communication line 44 and at least one communication interface (the example of including the transceiver 43 in FIG. 4 is merely illustrative).

The processor 41 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application.

The communication link 44 may include a pathway for transmitting information between the above-mentioned components.

The transceiver 43 uses any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.

Optionally, the communication device may further include a memory 42 .

The memory 42 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including a compressed optical disc, a laser disc, an optical disc, a digital versatile disc, a Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may be independent and connected to the processor via a communication line 44. The memory may also be integrated with the processor.

The memory 42 is used to store computer-executable instructions for executing the solution of the present application, and the execution is controlled by the processor 41. The processor 41 is used to execute the computer-executable instructions stored in the memory 42, thereby implementing the policy control method provided in the following embodiments of the present application.

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

In a specific implementation, as an embodiment, the processor 41 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 4 .

In a specific implementation, as an embodiment, the communication device may include multiple processors, such as processor 41 and processor 45 in FIG. 4. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

The transmission method provided in the embodiment of the present application will be described in detail below in conjunction with Figures 3 and 4.

It should be noted that the message names between network elements or the names of parameters in the messages in the following embodiments of the present application are merely examples, and other names may be used in specific implementations, and the embodiments of the present application do not impose any specific limitations on this.

The network device 100 can allocate preconfigured uplink resources (PUR) to the terminal 200. The terminal in the idle state can transmit uplink data on the PUR and directly enter the sleep state after transmitting the uplink data. That is, for a terminal with a PUR, it can transmit uplink data on the PUR. Thus, the random access process is skipped. However, due to the delay in signal propagation between the network device 100 and the terminal 200, there may be a large time difference between the signals from multiple terminals 200 to the network device 100, thereby causing interference between multiple terminals. Therefore, if the terminal in the idle state uses the PUR to transmit uplink data, it needs to have a correct timing advance (TA). Among them, TA refers to the offset of the uplink transmission relative to the downlink transmission. That is, as shown in Figure 5, TA means that the uplink radio frame (Uplink radioframe) i starts (N _TA +N _{TA offset} )×T _s seconds before the corresponding downlink radio frame (Downlink radio frame) i. The purpose of TA is to enable uplink data sent by terminals 200 at different distances from the network device 100 to arrive at the network device 100 at the same time. This can eliminate interference between terminals 200. Or the time when uplink data of different terminals 200 arrive at the network device 100 is within the range of cyclic prefix (CP).

Therefore, in order to eliminate the influence of the time difference, the eNB can usually indicate the timing advance instruction to the terminal during the random access process, and the terminal determines the TA according to the received timing advance instruction. Thereby avoiding interference between multiple terminals. The terminal can access the eNB through the four-step random access process shown in Figure 1 or the random access process shown in Figure 2. As shown in Figure 1: The specific content of the four-step random access process can refer to the description in the prior art, and the embodiments of the present application will not be repeated here. For the random access process shown in Figure 2, the Msg1 sent by the terminal to the eNB includes a random access preamble and a data channel (for example, a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH)), that is, uplink data is sent before the uplink synchronization is completed, thereby reducing the delay of uplink data transmission. In addition, compared with the random access process shown in Figure 1, the Msg2 sent by the eNB to the terminal during the random access process shown in Figure 2 does not need to send scheduling information of the data channel to the terminal, thereby reducing the signaling overhead.

Regardless of the random access process shown in Figure 1 or the random access process shown in Figure 2, the eNB can carry a timing advance command (TA command) and uplink grant information in Msg2. Multiple terminals perform timing advances respectively according to the received timing advance commands, thereby avoiding interference between multiple terminals.

However, if the terminal only updates the TA and then transmits uplink data on the PUR, the terminal does not need to enter the connected state. However, for the solution shown in Figure 1, the terminal can update the TA through the traditional RACH mechanism. After the legacy RACH, the terminal can enter the connected state. Then the eNB needs to allocate resources for uplink transmission to the terminal. For the solution shown in Figure 2, the terminal updates the TA through the EDT process. After the EDT process, the terminal can enter the connected state or remain in the idle state.

The connected state means that after the terminal establishes an RRC connection with the base station, the terminal is in the connected state.

The idle state means that no RRC connection is established between the terminal and the base station, and the UE is in the idle state.

As shown in FIG1 , the specific process of the traditional random access procedure mechanism is as follows: an idle terminal sends a random access preamble (Random Access Preamble), also known as message 1 (message 1, Msg1) to a base station (for example, FIG1 takes eNB as an example) (for example, the terminal can send a Preamble to the base station on a random access channel). After detecting the random access preamble, the base station sends a random access response (Random Access Response, RAR) to the terminal, also known as message 2 (Msg2). The terminal sends an uplink message, also known as message 3 (Msg3), through a data channel (for example, a physical uplink shared channel (PUSCH)) in the allocated uplink resources according to the instruction of Msg2. In order to resolve the conflict, after successfully receiving a Msg3, the base station returns a conflict resolution message (also known as Msg4) to the terminal that has successfully accessed. The Msg4 carries the unique identity in Msg3 to specify the terminal that has successfully accessed. The difference between the EDT process and the traditional random access mechanism is that, as shown in Figure 2, the Msg3 sent by the terminal to the base station carries user data. The terminal receives Msg4, which can carry downlink user data.

For the convenience of description, the random access process shown in FIG1 may be referred to as a RACH process. The random access process shown in FIG2 may be referred to as an EDT process.

However, the base station is not sure whether the terminal performs the random access process for the purpose of updating the TA or for entering the connected state through the RACH process to transmit uplink data, and the PUR is no longer used.

Based on this, an embodiment of the present application provides a communication method, in which after the terminal obtains the TA, it sends to the base station an indication information indicating that the purpose of the random access process is to update the TA and/or to retain the first PUR allocated to the terminal. This allows the network device to distinguish that the terminal needs to continue to retain the first PUR and/or does not need to enter the connected state. This can avoid entering the connected state and avoiding the waste of resources caused by allocating resources for uplink transmission to the terminal.

The embodiment of the present application provides a communication method, and the execution subject of the sending end of the communication method can be a network device or a chip used in the network device. The execution subject of the receiving end of the communication method can be a terminal or a chip used in the terminal. The following embodiment takes the execution subject of the sending end of the communication method as a network device and the execution subject of the receiving end of the communication method as a terminal as an example.

As shown in FIG. 6 , FIG. 6 shows that an embodiment of the present application provides a communication method, the method comprising:

Step 101: The network device sends timing advance TA information to the terminal during the random access process.

The TA information is used to determine the TA allocated by the network device to the terminal.

Exemplarily, the network device may send the TA to the terminal in a message (Msg) 2 in the random access process. That is, the TA is sent in the message 2 in the random access process. For example, the message 2 may be a random access response (RAR).

In one example, step 101 in the embodiment of the present application can be implemented in the following manner: the network device sends the TA information carried in the message 2 in the random access process to the terminal. In another example, the TA can also be sent to the terminal together with the message 2 when the network device sends the message 2 to the terminal in the random access process. However, the TA information may not be carried in the message 2 at this time. That is, if the network device receives the message 1 sent by the terminal, in the process of giving feedback to the message 1, in addition to feeding back the message 2, the TA information can also be fed back.

In the embodiment of the present application, after the cell search process, the terminal can achieve downlink synchronization with the cell, but the terminal can only perform uplink transmission after achieving uplink synchronization with the cell. Therefore, the terminal can establish a connection with the cell and achieve uplink synchronization through a random access process. The random access process in the embodiment of the present application can be triggered by the following events: 1) Establishing a wireless connection when the terminal initially accesses. That is, the terminal changes from the RRC idle state to the RRC connected state. 2) RRC connection reconstruction process. So that the terminal can rebuild the wireless connection after the wireless link fails. 3) Cell switching. That is, the terminal needs to establish uplink synchronization with the new cell. 4) In order to locate the terminal, TA is required. It should be understood that when the terminal completes the above purpose through the random access process, the random access process initiated by the terminal this time ends.

The main purpose of the random access process in the embodiment of the present application is as follows: to establish uplink synchronization; to establish a unique terminal identifier C-RNTI and request the network to allocate uplink resources to the terminal. Therefore, the random access process is not only used for initial access, but also for new cell access during handover, access after radio link failure, re-restoration of uplink synchronization when there is uplink/downlink data transmission, and UL-SCH resource request, etc.

The random access process in the embodiment of the present application may be the random access process shown in FIG1 , or may be the EDT process shown in FIG2 . The embodiment of the present application does not limit this.

Exemplarily, message 2 of the random access process carries a field for indicating the TA.

It should be understood that the network device in the embodiment of the present application may be the network device 100 as shown in FIG3 . The terminal may be the terminal 200 as shown in FIG3 .

Step 102: The terminal receives TA information from the network device during the random access process.

In one example, step 102 in the embodiment of the present application can be specifically implemented in the following manner: the terminal receives the TA information carried in message 2 of the random access process. Exemplarily, the terminal can receive the TA information from the network device in message 2 of the random access process. That is, the TA information is received in message 2 of the random access process.

In another example, the terminal receives TA information from the network device during the random access process while receiving message 2 from the network device. That is, after sending message 1, the terminal can receive TA information from the network device before sending message 3 to the network device.

Step 103: The terminal sends first indication information to the network device during the random access process.

The first indication information is used to indicate that the random access process is used to update the TA, and/or the first indication information is used to request to reserve the first pre-configured uplink resource PUR allocated to the terminal.

It should be understood that the first indication information in the embodiment of the present application is used to indicate that the random access process is used to update the TA so that the terminal can continue to use the PUR. Or the first indication information is used to request to reserve the first pre-configured uplink resource PUR allocated to the terminal. Or, the first indication information is used to indicate that the random access process is used to update the TA and reserve the first pre-configured uplink resource PUR allocated to the terminal.

Optionally, the first indication information is used to indicate that the random access process is used to update the TA and can be used: the first indication information is used to request not to establish an RRC connection replacement for the terminal.

It should be understood that the terminal has a first PUR. The first PUR may be preconfigured for the terminal. The first PUR may also be allocated to the terminal by the network device before the random access process.

In an optional implementation, step 103 may be implemented in the following manner: the terminal sends message 3 in the random access process to the network device, and the first indication information is carried in message 3. In another optional implementation, step 103 may be implemented in the following manner: the terminal sends the first indication information to the network device during the process of sending message 3 in the random access process to the network device and receiving message 4 from the network device. That is, the network device may receive the first indication information during the time period of receiving message 3 and feeding back message 4 to the terminal.

The first indication information may be carried by an idle bit or an idle state in message 3. Of course, some bits may also be added to message 3 to carry the first indication information. Of course, the first indication information may also be sent in other uplink messages sent by the terminal to the network device during the random process.

It should be noted that, for the EDT process, in addition to the first indication information, the message 3 in the EDT process may also carry uplink data sent to the network device.

Step 104: The network device receives first indication information from the terminal during the random access process, where the first indication information is used to indicate that the random access process is used to update the TA, and/or the first indication information is used to request to reserve a first preconfigured uplink resource PUR allocated to the terminal.

Exemplarily, for the network device, the first indication information is received in message 3 during the random access process. The network device receives message 3 from the terminal during the random access process, and the first indication information is carried in the message 3. Of course, the first indication information may also be received in other uplink messages sent by the terminal to the network device during the random access process.

An embodiment of the present application provides a communication method, which obtains TA information sent by a network device through a terminal, and then the terminal sends a first indication information to the network device during a random access process, which is used to indicate that the random access process is used to update the TA, and/or, which is used to indicate that the first preconfigured uplink resource PUR allocated to the terminal is reserved. This can facilitate the network device to determine that the purpose of the terminal performing the random access process is to update the TA. In this way, the network device may not establish an RRC connection for the terminal, thereby avoiding signaling waste caused during the establishment of the RRC connection, and avoiding allocating resources for uplink transmission to the terminal after the terminal enters the connected state. And/or, the network device can determine whether to retain the first PUR allocated to the terminal based on the first indication information.

It should be understood that after the terminal sends the first indication information to the network device, if there is uplink data, the terminal can send the uplink data to the network device on the first PUR.

It should be noted that if the terminal determines that the size of the first PUR cannot meet the needs of the uplink data sent by the terminal or the time of the first PUR configured by the network device for the terminal has timed out, the terminal can use the first indication information to indicate to the network device that an RRC connection needs to be established. In this way, the terminal can obtain the uplink resources allocated by the network device after the RRC connection is established. Then, uplink data can be sent to the network device on the uplink resources.

Since the specific contents of message 3 are different for the EDT process or the RACH process, examples will be given below respectively.

Example 1-1, for the RACH process, message3 is used to request to establish an RRC connection. At this time, the specific content of message3 is as follows:

Example 1-2, for the RACH process, message3 is used to request to re-establish the RRC connection. At this time, the specific content of message3 is as follows:

Example 1-3, for the EDT process, the message 3 is used to request to resume the suspended RRC connection, or to perform UP-EDT. At this time, the specific content of message 3 is as follows:

Example 1-4, for the EDT process, message3 is used to start CP-EDT. At this time, the specific content of message3 is as follows:

It should be understood that the first indication information may be carried by some spare state in RRC message 3, for example, by the spare state in establishmentCause.

In the embodiment of the present application, after the network device determines that the random access process is used to update the TA according to the first indication information, the network device can autonomously determine whether it is necessary to establish an RRC connection with the terminal. For example, if the network device determines that downlink data can be sent to the terminal in message 4 of the EDT process, or the network device determines that it is temporarily not necessary to send downlink data to the terminal, the network device can determine that an RRC connection is not established with the terminal. If the network device determines that downlink data needs to be sent to the terminal, the network device can determine that an RRC connection can be established with the terminal.

Exemplarily, the network device may carry third indication information in message 4, and the third indication information is used to instruct the terminal to establish an RRC connection or not to establish an RRC connection. In addition to carrying the third indication information, message 4 in the EDT process may also carry downlink data sent to the terminal, or may not carry downlink data sent to the terminal. Message 4 in the RACH process may carry the third indication information.

For example, the size of the third indication information may be 1 bit. For example, the third indication information may be the first indicator, or the third indication information may be the second indicator. For example, the first indicator is "1" and the second indicator is "0".

It should be understood that the network device and the terminal may negotiate that if the RRC connection does not need to be established, the network device may not send the third indication information to the terminal. Alternatively, the network device and the terminal may negotiate that if the RRC connection needs to be established, the network device may not send the third indication information to the terminal.

If the terminal receives the indication information in the message 4 indicating that the terminal establishes an RRC connection or does not establish an RRC connection, it can determine whether it needs to establish an RRC connection with the network device or not. If the terminal determines that it needs to establish an RRC connection, the RRC connection is established between the network device and the RRC connection by executing the RRC establishment process in the prior art. If the terminal determines that it does not need to establish an RRC connection, the terminal can send the uplink data to the network device on the PUR (for example, the first PUR) allocated by the network device to the terminal according to the TA. After that, the terminal can enter the sleep state.

In an embodiment of the present application, if the network device determines that the terminal requests to retain the first PUR according to the first indication information, the network device can independently determine whether the first PUR needs to be retained for the terminal. For example, if the network device determines that the frequency of using the first PUR is lower than a preset frequency threshold, or the current resources are tight, the network device can instruct the terminal to release the first PUR. Of course, if the network device determines that the current resources are sufficient, the network device can instruct the terminal to retain the first PUR.

Exemplarily, if the network device believes that current resources are sufficient, or the service priority sent by the terminal on the first PUR is high, the network device may instruct the terminal to retain the first PUR.

Since the specific contents of message 4 are different for the EDT process or the RACH process, examples will be given below respectively.

Example 2-1, for the RACH process, message4 is used to establish an RRC connection. At this time, the specific content of message4 is as follows:

Example 2-2, for the RACH process, message4 is used to resume the suspended RRC connection. At this time, the specific content of message4 is as follows:

Example 2-3, for the EDT process, the message 4 is used to release the RRC connection or complete the UP-EDT process. At this time, the specific content of message 4 is as follows:

Example 2-4, for the EDT process, message4 is used to confirm the successful completion of the CP-EDT process. At this time, the specific content of message4 is as follows:

It should be understood that the third indication information and/or the second indication information in the embodiment of the present application can utilize the newly added bits in message 4, or add a new IE to send the third indication information and/or the second indication information.

As shown in FIG. 7 , in an optional embodiment, the method provided in the embodiment of the present application further includes:

Step 105: The network device sends second indication information to the terminal, where the second indication information is used to instruct to release the first PUR.

Exemplarily, step 105 in the embodiment of the present application may be implemented in the following manner: the network device sends message 4 to the terminal during the random access process, and the second indication information is carried in message 4.

Step 106: The terminal receives second indication information from the network device.

Exemplarily, step 106 in the embodiment of the present application may be implemented in the following manner: the terminal receives message 4 from the network device during the random access process, and the second indication information is carried in message 4.

After step 106, that is, after the terminal receives the second indication information, the terminal can determine that the first PUR needs to be released. Of course, in the embodiment of the present application, the second indication information can also be used to indicate the release time information of the first PUR or to indicate how long the first PUR is released. In this way, the terminal can determine to release the first PUR when the time indicated by the release time information arrives.

It should be noted that the second indication information in the embodiment of the present application may also be carried in other messages during the period between the network device receiving the message 3 of the terminal and the terminal establishing an RRC connection with the network device.

It should be noted that step 105 provided in the embodiment of the present application can also be replaced by the following method: the network device sends a second indication information to the terminal, and the second indication information is used to instruct the terminal to retain the first PUR. Step 106 can also be replaced by the following method: the terminal receives the second indication information from the network device to determine that the terminal retains the first PUR. Of course, in the embodiment of the present application, the second indication information is also used to indicate the retention time information of the first PUR. In this way, the terminal can determine the time when the first PUR can be retained. And release the first PUR when the time indicated by the retention time information is reached.

It should be noted that step 103 provided in the embodiment of the present application can also be replaced by the following method: the terminal sends Msg3 to the network device, and the Msg3 can be Msg3 in Figure 1 or Figure 2. That is, the terminal may not carry the first indication information in the Msg3 sent to the network device. The terminal may receive the indication information for indicating the release of the first PUR in Msg4.

When the network device instructs the terminal to retain the first PUR, the second indication information is equivalent to confirmation. When the terminal receives the second indication information for instructing to retain the first PUR, the terminal can also restart the timer of the first PUR (this timer means that the first PUR resource is released after the timer times out).

Alternatively, in an optional implementation, regardless of whether the second indication information is used to indicate the retention or release of the first PUR, the second indication information can also be used to indicate the configuration information of the second PUR reallocated to the terminal. The configuration information of the second PUR may include the number of repetitions, the number of resource units (RUnumber), etc.

The above embodiment mainly describes the case where the first indication information is used to request to retain the first PUR. Of course, in an alternative implementation, the first indication information used to request to retain the first PUR can also be replaced by the first indication information used to indicate a request to release the first PUR. If the network device receives the first indication information used to indicate a request to release the first PUR. The network device can determine whether to retain the first PUR or release the first PUR. The network device sends the second indication information to the terminal. The second indication information is used to indicate the release of the first PUR or the retention of the first PUR.

In the embodiment of the present application, the request and the release are independent of each other. The first indication information may request to retain the first PUR, and the second indication information is used to indicate the release of the first PUR. Alternatively, the first indication information may request to release the first PUR, but the second indication information is used to indicate the retention of the first PUR.

In an optional implementation, the network device in the embodiment of the present application may send the second indication information and/or the third indication information to the terminal in message 4 during the random access process. That is, the second indication information and/or the third indication information is sent in message 4 during the random access process. For the terminal, the second indication information and/or the third indication information is received in message 4 during the random access process. For the EDT process, message 4 in the EDT process may also carry downlink data or may not carry downlink data.

In an optional embodiment, as shown in FIG8 , the method provided in the embodiment of the present application further includes:

Step 107: The terminal sends retention time information indicating the first PUR to the network device.

It should be noted that if the first indication information does not indicate a request to retain the first PUR, step 107 and step 108 may be omitted. That is, step 107 and step 108 are optional steps.

Exemplarily, the retention time information may be the retention period or duration of the first PUR.

For example, the retention time information used to indicate the first PUR may be the start time and end time of retaining the first PUR. Or the retention time information used to indicate the first PUR may be the start time and duration of retaining the first PUR. Or the retention time information used to indicate the first PUR may be the start period and end period of retaining the first PUR. Or the retention time information used to indicate the first PUR may be the start period and duration of retaining the first PUR. Or the retention time information used to indicate the first PUR may be the number of periods for retaining the first PUR. Of course, if the first indication information does not carry the start time of retaining the first PUR or the period of retaining the first PUR, the network device and the terminal may use the moment or period of receiving the first indication information as the start time or start period, and the embodiments of the present application do not limit this.

Step 108: The network device receives retention time information indicating the first PUR from the terminal.

It should be understood that after the network device receives the retention time information indicating the first PUR, when the retention time of the first PUR is reached, the network device may actively determine to release the first PUR.

In an optional implementation, the retention time information for indicating the first PUR may also be carried in Msg3. For example, the first indication information may also be used to indicate the retention time information of the first PUR. For example, more bits are added in Msg3 to indicate the retention time information. Of course, the retention time information for indicating the first PUR may also be in other high-layer signaling in the random access process.

For example, the retention time information specifically refers to how many cycles are retained.

If the terminal does not have the first PUR when performing the random access process, or the first PUR currently possessed by the terminal does not meet the preset requirements, in a possible embodiment, as shown in FIG. 9, the method provided in the embodiment of the present application further includes:

Step 109: The terminal sends fourth indication information to the network device.

The fourth indication information is used to request allocation of the second PUR to the terminal. Alternatively, the fourth indication information is used to indicate whether the terminal has the PUR capability or does not have the PUR capability.

In the embodiment of the present application, if a terminal has PUR capability, it means that the network device can allocate PUR to the terminal so that the terminal can send uplink data to the network device on PUR when it is in idle state. In the embodiment of the present application, if a terminal does not have PUR capability, it means that the network device may not allocate PUR to the terminal.

Exemplarily, the fourth indication information may be sent in message 3 during the random access process.

Step 110: The network device receives fourth indication information from the terminal.

Exemplarily, the fourth indication information may be received by the network device in message 3 during the random access process.

By executing step 109 and step 110, the network device can determine to allocate the second PUR to the terminal according to the request of the terminal in the embodiment of the present application, so as to avoid the problem of resource waste caused by some terminals not supporting PUR capability or not needing PUR when the network device blindly allocates the second PUR to the terminal.

It should be noted that step 109 and step 110 in the embodiment of the present application can also be implemented separately. That is, for the steps described in Figure 9, step 101, step 102, step 103, step 104, step 107, and step 108 in Figure 9 can also be omitted. That is, step 101, step 102, step 103, step 104, step 107, and step 108 are optional.

Optionally, the fourth indication information is also used to indicate one or more of the following information: whether the service sent on the second PUR is a periodic service or a non-periodic service, whether the second PUR is a shared PUR or a dedicated PUR, the period of the second PUR, and the size of the data packet transmitted on the second PUR.

Exemplarily, the size of the fourth indication information may be N bits, where N is an integer greater than or equal to 1. For example, the terminal uses 1 bit in Msg3 to request the second PUR from the network device; or uses 1 bit to request the network device whether the service sent on the second PUR is periodic or non-periodic; or uses 1 bit to request the network device whether to use a dedicated PUR or a shared PUR.

In the embodiment of the present application, the size of the data packet transmitted on the second PUR requested by the terminal to the network device may be a data packet of a fixed size, or may be a data packet within a numerical range, for example, 500-600 bits, or 200-300 bits.

The method provided in the embodiment of the present application may further include, before step 101: the terminal sends a preamble sequence (Preamble) to the network device, which may also be referred to as message 1. It should be noted that for the RACH process shown in FIG1 , the terminal may select a traditional Preamble resource to send the Preamble. For the EDT process shown in FIG1 , the terminal may select an EDTPreamble resource to send the Preamble.

As shown in FIG. 10 , FIG. 10 shows another communication method provided in an embodiment of the present application, the method comprising:

Step 201: The network device sends first indication information to a terminal in an idle state, where the first indication information is used to notify the release of a pre-configured uplink resource PUR allocated to the terminal.

It should be understood that the network device may be the network device 100 shown in Figure 3, and the terminal may be the terminal 200 shown in Figure 3. The terminal has a PUR.

Exemplarily, the network device may send downlink control information (DCI) to the terminal, and the DCI may use a bit, a state, or a separate field to notify the release. Specifically, for example, the DCI may be a narrowband physical downlink control channel (NPDCCH) order. The NPDCCH order may also include fields such as a preamble format indicator, a starting number of NPRACH repetitions, a subcarrier indication of NPRACH, and a carrier indication of NPRACH.

The search space where the DCI is located may be type2-CSS, or USS, or a search space specifically defined for PUR.

Exemplarily, the network device may also send a media access control signaling (media access control element, MAC CE) to the terminal, wherein the MAC CE carries the first indication information.

Step 202: The terminal in the idle state receives first indication information from the network device.

It should be understood that the terminal may receive the first indication information from the network device via the DCI. Optionally, the first indication information is also used to indicate the time information for releasing the PUR.

Step 203: The terminal sends a preamble sequence to the network device, where the preamble sequence is used to indicate confirmation of the first indication information.

Specifically, the leading sequence sent by the terminal to the network device is used to indicate confirmation of receiving the first indication information.

Exemplarily, after receiving the first indication information, the terminal sends a Preamble on the next available narrowband physical random access channel (NPRACH) resource (the next available NPRACH resource may be n+k2, where k2 is greater than or equal to 8, and n is the end time of receiving the first indication information).

It should be understood that the preamble sequence is used to indicate confirmation of receiving the first indication information, which can be understood as: the preamble sequence is used to indicate that the terminal agrees to release the PUR, or correctly receives the first indication information.

Step 204: The network device receives the Preamble from the terminal.

In an optional implementation, the method provided in the embodiment of the present application further includes:

Step 205: In response to the Preamble, the PUR of the terminal is released.

Exemplarily, if the network device receives the Preamble, it may release the PUR when the time for releasing the PUR is reached.

Optionally, the network device may also send a feedback message to the terminal, the feedback message is used to confirm the release of the PUR, or the network device has successfully released the PUR, or the network device has correctly received the Preamble. Of course, optionally, after receiving the feedback message, the terminal may also send a confirmation message to the network device, the confirmation message is used to indicate that the terminal has confirmed that the PUR is released.

In an optional implementation manner, the first indication information in the embodiment of the present application is also used to instruct the terminal to send a preamble sequence, or to instruct the terminal to perform a random access process, or to indicate information of the terminal preamble sequence.

If the first indication information notifies the terminal to perform a random access process, but does not notify the terminal of the preamble sequence information, the terminal can randomly select a Preamble to send. If the first indication information notifies the terminal of the preamble sequence information, the terminal uses the Preamble indicated by the network device to send.

In an optional embodiment, as shown in FIG11 , the method provided in the embodiment of the present application further includes:

Step 206: The network device sends information about a first resource to the terminal, where the first resource is used by the terminal to send a preamble sequence, and the first resource is a non-contention resource.

Optionally, the information of the first resource may also be carried in the first indication information, that is, the first indication information in step 201 may also be used to indicate the information of the first resource. The information of the first resource is used to determine the first resource. For example, it may be parameters such as the length of the first resource and the location of the first resource.

For example, the information of the first resource includes a subcarrier ID and a coverage level.

That the first resource belongs to a non-competitive resource may also be understood as that the first resource is a dedicated resource of the terminal.

Step 207: The terminal receives information about the first resource from the network device.

Accordingly, step 203 may be specifically implemented in the following manner: the terminal sends a preamble sequence to the network device on the first resource. Step 204 may be implemented in the following manner: the network device receives a preamble sequence from the terminal on the first resource.

The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the interaction between various network elements. It can be understood that, in order to realize the above functions, each network element, such as a terminal and a network device, includes a hardware structure and/or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed in this document, the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the embodiments of the present application.

The embodiment of the present application can divide the functional modules of the terminal and the network device according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation. The following is an example of dividing each functional module according to each function:

In the case of using an integrated unit, FIG12 shows a schematic diagram of the structure of a communication device involved in the above embodiment, which may be a terminal or a chip used in a terminal. The communication device includes: a receiving unit 101 and a sending unit 102.

In one example, the receiving unit 101 is used to support the communication device to execute step 102 executed by the terminal in the above embodiment. The sending unit 102 is used to support the communication device to execute step 103 executed by the terminal in the above embodiment.

Optionally, the receiving unit 101 is further configured to support the communication device to execute step 106 executed by the terminal in the above embodiment. Optionally, the sending unit 102 is configured to support the communication device to execute step 107 and step 109 executed by the terminal in the above embodiment.

In another example, the receiving unit 101 is used to support the communication device to execute step 202 executed by the terminal in the above embodiment. The sending unit 102 is used to support the communication device to execute step 203 executed by the terminal in the above embodiment.

Optionally, the receiving unit 101 is further configured to support the communication device to execute step 207 executed by the terminal in the above embodiment.

All relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

In the case of using an integrated unit, FIG13 shows a possible logical structure diagram of the communication device involved in the above embodiment. The communication device can be a terminal or a chip in a terminal. The communication device includes: a communication module 113.

Optionally, the communication device may further include: a processing module 112.

The processing module 112 is used to control and manage the actions of the communication device, for example, the processing module 112 is used to execute the steps of message or data processing on the communication device side. The communication module 113 is used to support the steps of message/data sending or message/data receiving on the communication device side.

In one example, the communication module 113 is used to support the communication device to execute step 102 and step 103 executed by the terminal in the above embodiment.

Optionally, the communication module 113 is further configured to support the communication device to execute step 106 executed by the terminal in the above embodiment. Optionally, the communication module 113 is configured to support the communication device to execute step 107 and step 109 executed by the terminal in the above embodiment.

In another example, the communication module 113 is used to support the communication device to execute step 202 executed by the terminal in the above embodiment. The communication module 113 is used to support the communication device to execute step 203 executed by the terminal in the above embodiment.

Optionally, the communication module 113 is further configured to support the communication device to execute step 207 executed by the terminal in the above embodiment.

Optionally, the communication device may further include a storage module 111 for storing program codes and data of the terminal.

Among them, the processing module 112 can be a processor or a controller, for example, a central processing unit, a general processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of the present invention. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, etc. The communication module 113 can be a transceiver, a transceiver circuit or a communication interface, etc. The storage module 111 can be a memory.

When the processing module 112 is the processor 41 or the processor 45 , the communication module 113 is the transceiver 43 , and the storage module 111 is the memory 42 , the communication device involved in the embodiment of the present application may be the communication device shown in FIG. 4 .

Among them, the transceiver 43, the processor 41 and the processor 45 and the memory 42 are connected to each other through a communication line 44. The communication line 44 can be a PCI bus or an EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in FIG4, but it does not mean that there is only one bus or one type of bus. Among them, the memory 42 is used to store the program code and data of the communication device. The transceiver 43 is used to support the communication device to communicate with other devices (for example, network devices), and the processor 41 or the processor 45 is used to support the communication device to execute the program code and data stored in the memory 42 to implement a communication method provided in an embodiment of the present application.

Exemplarily, take the communication device shown in FIG. 13 as a terminal.

In one example, the transceiver 43 is used to support the communication device to execute step 102 and step 103 executed by the terminal in the above embodiment.

Optionally, the transceiver 43 is further configured to support the communication device to execute step 106 executed by the terminal in the above embodiment. Optionally, the transceiver 43 is configured to support the communication device to execute step 107 and step 109 executed by the terminal in the above embodiment.

In another example, the transceiver 43 is used to support the communication device to execute step 202 executed by the terminal in the above embodiment. The transceiver 43 is used to support the communication device to execute step 203 executed by the terminal in the above embodiment.

Optionally, the transceiver 43 is further configured to support the communication device to execute step 207 executed by the terminal in the above embodiment.

It should be understood that if the communication device shown in FIG. 13 is a chip in a terminal, the steps performed by the transceiver 43 may be replaced by a communication interface of the chip in the terminal.

In the case of using an integrated unit, a possible structural diagram of the communication device involved in the above embodiment is shown in FIG14. The communication device can be a network device or a chip in the network device. The communication device includes: a sending unit 201 and a receiving unit 202.

In one example, the sending unit 201 is used to support the communication device to execute step 101 in the above embodiment. The receiving unit 202 is used to support the communication device to execute step 104 in the above embodiment.

Optionally, the sending unit 201 in the embodiment of the present application is further configured to support the communication device to execute step 105 in the above embodiment. The receiving unit 202 is further configured to support the communication device to execute step 108 and step 110 in the above embodiment.

In another example, the sending unit 201 is used to support the communication device to execute step 201 in the above embodiment. The receiving unit 202 is used to support the communication device to execute step 204 in the above embodiment.

Optionally, the communication device in the embodiment of the present application may further include: a processing unit 203, used to support the communication device to execute step 205 in the above embodiment.

Optionally, the sending unit 201 is further configured to support the communication device to execute step 206 in the above embodiment.

All relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

In the case of using an integrated unit, FIG15 shows a possible logical structure diagram of the communication device involved in the above embodiment. The communication device can be a network device or a chip in the network device. The communication device includes: a communication module 213.

Optionally, the communication device may further include a processing module 212.

The processing module 212 is used to control and manage the actions of the communication device. For example, the processing module 212 is used to support the communication device to perform the operations of message or data processing on the communication device side in the above-mentioned embodiments. The communication module 213 is used to support the communication device to perform the operations of sending and receiving messages or data on the communication device side in the above-mentioned embodiments.

For example, in one example, the communication module 213 is used to support the communication device to execute step 101 in the above embodiment. The receiving unit 202 is used to support the communication device to execute step 104 in the above embodiment.

Optionally, the communication module 213 in the embodiment of the present application is also used to support the communication device to execute step 105 in the above embodiment. The communication module 213 is also used to support the communication device to execute step 108 and step 110 in the above embodiment.

In another example, the communication module 213 is used to support the communication device to execute step 201 in the above embodiment. The communication module 213 is used to support the communication device to execute step 204 in the above embodiment.

Optionally, the communication device in the embodiment of the present application may further include: a processing module 212, used to support the communication device to execute step 205 in the above embodiment.

Optionally, the communication module 213 is further used to support the communication device to execute step 206 in the above embodiment.

Optionally, the communication device as shown in FIG. 15 may further include a storage module 211 for storing program codes and data of the communication device.

Among them, the processing module 212 can be a processor or a controller, for example, a central processing unit, a general processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of the present invention. The processor can also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, etc. The communication module 213 can be a transceiver, a transceiver circuit or a communication interface, etc. The storage module 211 can be a memory.

When the processing module 212 is the processor 41 or the processor 45, the communication module 213 is the transceiver 43, and the storage module 211 is the memory 42, the network device involved in the embodiment of the present application may be the communication device shown in FIG. 4 .

For example, in one example, the transceiver 43 is used to support the communication device to execute step 101 in the above embodiment. The transceiver 43 is used to support the communication device to execute step 104 in the above embodiment.

Optionally, the transceiver 43 in the embodiment of the present application is also used to support the communication device to execute step 105 in the above embodiment. The transceiver 43 is also used to support the communication device to execute step 108 and step 110 in the above embodiment.

In another example, the transceiver 43 is used to support the communication device to execute step 201 in the above embodiment. The transceiver 43 is used to support the communication device to execute step 204 in the above embodiment.

Optionally, the communication device in the embodiment of the present application may further include: a processor 41 or a processor 45, used to support the communication device to execute step 205 in the above embodiment.

Optionally, the transceiver 43 is further configured to support the communication device to execute step 206 in the above embodiment.

The above receiving unit (or unit for receiving) is an interface circuit of the device, which is used to receive signals from other devices. For example, when the device is implemented in the form of a chip, the receiving unit is an interface circuit of the chip used to receive signals from other chips or devices. The above sending unit (or unit for sending) is an interface circuit of the device, which is used to send signals to other devices. For example, when the device is implemented in the form of a chip, the sending unit is an interface circuit of the chip used to send signals to other chips or devices.

16 is a schematic diagram of the structure of a communication device 150 provided in an embodiment of the present application. The communication device 150 includes at least one processor 1510 .

Optionally, the communication device 150 provided in the embodiment of the present application may further include a communication interface 1530 .

Optionally, the communication device 150 further includes a memory 1550, which may include a read-only memory and a random access memory, and provides operation instructions and data to the processor 1510. A portion of the memory 1550 may also include a non-volatile random access memory (NVRAM).

In some embodiments, the memory 1550 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof:

In the embodiment of the present application, the corresponding operation is performed by calling the operation instruction stored in the memory 1550 (the operation instruction may be stored in the operating system).

The communication device shown in Figure 16 can be the network device or terminal involved in the embodiments of the present application, or it can be a device in the network device or a device in the terminal, such as a chip, or a chip system, or a circuit structure.

One possible implementation is that the structures of the chips used in the network device and the terminal are similar, and different devices can use different chips to implement their respective functions.

The processor 1510 controls the operation of the network device or terminal, and the processor 1510 may also be referred to as a central processing unit (CPU). The memory 1550 may include a read-only memory and a random access memory, and provides instructions and data to the processor 1510. A portion of the memory 1550 may also include a non-volatile random access memory (NVRAM). In a specific application, the memory 1550, the communication interface 1530, and the memory 1550 are coupled together through a bus system 1520, wherein the bus system 1520 may include a power bus, a control bus, and a status signal bus in addition to a data bus. However, for the sake of clarity, various buses are labeled as bus system 1520 in FIG. 16.

The communication interface 1530 may be an input/output interface, a pin, or a circuit, etc.

The memory 1550 may be a storage unit (eg, a register, a cache, etc.) within the chip.

The method disclosed in the above embodiment of the present application can be applied to the processor 1510, or implemented by the processor 1510. The processor 1510 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 1510. The above processor 1510 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a readily available programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to execute, or the hardware and software modules in the decoding processor can be executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 1550, and the processor 1510 reads the information in the memory 1550 and completes the steps of the above method in combination with its hardware.

Optionally, the communication interface 1530 is used to execute the receiving and sending steps of the network device or terminal in the embodiments shown in Figures 4, 5, 6, 7, 8, 9, and 11.

The processor 1510 is used to execute the processing steps of the network device or terminal in the embodiments shown in Figures 4, 5, 6, 7, 8, 9, and 11.

In the above embodiments, the instructions stored in the memory for execution by the processor may be implemented in the form of a computer program product. The computer program product may be pre-written in the memory, or downloaded and installed in the memory in the form of software.

The computer program product includes one or more computer instructions. When loading and executing the computer program instructions on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instruction can be stored in a computer-readable storage medium, or transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, the computer instruction can be transmitted from a website site, a computer, a server, or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server, or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server, a data center, etc. that includes one or more available media integration. Available media can be magnetic media, (e.g., floppy disk, hard disk, tape), optical media (e.g., DVD), or semiconductor media (e.g., solid-state hard disk Solid State Disk, SSD), etc.

On the one hand, a computer storage medium is provided, in which instructions are stored. When the instructions are executed, the terminal executes step 102, step 103, step 106, step 107 and step 109 in the embodiment.

On the one hand, a computer storage medium is provided, in which instructions are stored. When the instructions are executed, the terminal executes step 202, step 203, and step 207 in the embodiment.

On the other hand, a computer storage medium is provided, in which instructions are stored. When the instructions are executed, the network device executes step 101, step 104, step 108 and step 110 in the embodiment.

On the other hand, a computer storage medium is provided, in which instructions are stored. When the instructions are executed, the network device executes step 201, step 204, step 205 and step 206 in the embodiment.

On the one hand, a computer program product including instructions is provided. The computer program product stores instructions, and when the instructions are executed, the terminal executes step 102, step 103, step 106, step 107 and step 109 in the embodiment.

On the one hand, a computer program product including instructions is provided. The computer program product stores the instructions. When the instructions are executed, the terminal executes step 202, step 203, and step 207 in the embodiment.

On the other hand, a computer program product including instructions is provided. The computer program product stores the instructions, and when the instructions are executed, the network device executes step 101, step 104, step 108 and step 110 in the embodiment.

On the other hand, a computer program product including instructions is provided. The computer program product stores instructions, and when the instructions are executed, the network device executes step 201, step 204, step 205 and step 206 in the embodiment.

On the one hand, a chip is provided, which is applied to a terminal, and the chip includes at least one processor and a communication interface, the communication interface is coupled to at least one processor, and the processor is used to run a computer program or instruction to execute steps 102, 103, 106, 107 and 109 in the embodiment.

On the one hand, a chip is provided, which is applied in a terminal, and the chip includes at least one processor and a communication interface, the communication interface is coupled to at least one processor, and the processor is used to run a computer program or instruction to execute steps 202, 203, and 207 in the embodiment.

On the other hand, a chip is provided, which is applied to a network device, the chip comprising at least one processor and a communication interface, the communication interface and at least one processor are coupled, and the processor is used to run a computer program or instruction to execute steps 201, 204, 205 and 206 in the embodiment.

On the other hand, a chip is provided, which is applied to a network device. The chip includes at least one processor and a communication interface. The communication interface is coupled to at least one processor, and the processor is used to run a computer program or instruction to execute steps 202, 203, and 207 in the embodiment.

In addition, an embodiment of the present application also provides a communication system, which includes a terminal as shown in Figures 12-13 and a network device as shown in Figures 14-15.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

In the several embodiments provided in the embodiments of the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be 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 distributed on multiple network units. Some or all of the units may 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, or each unit may exist physically separately, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment 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 a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program code.

The above are only specific implementations of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the embodiments of the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (25)

1. A communication method, characterized in that it includes: The terminal receives timing advance TA information from the network device during the random access process; The terminal sends first indication information to the network device during the random access process, where the first indication information is used to indicate that the random access process is used to update the TA, and/or, The first indication information is used to request to reserve a first preconfigured uplink resource PUR to trigger the terminal to remain in an idle state. 2. The method according to claim 1, wherein the terminal receives timing advance TA information from the network device during a random access process, including: The terminal receives the TA information carried in message 2 in the random access process. 3. The method according to claim 1 or 2, characterized in that the terminal sends first indication information to the network device during the random access process, including: The terminal sends message 3 in the random access process to the network device, and the first indication information is carried in the message 3. 4. The method according to any one of claims 1-3, characterized in that the method further includes: The terminal receives second indication information from the network device, and the second indication information is used to instruct release of the first PUR. 5. The method according to claim 4, wherein the terminal receives the second indication information from the network device, including: The terminal receives message 4 from the network device during the random access process, and the second indication information is carried in the message 4 . 6. The method according to any one of claims 1-5, characterized in that the method further includes: The terminal sends the retention time information of the first PUR to the network device. 7. A communication method, characterized by including: The network device sends timing advance TA information to the terminal during the random access process; The network device receives first indication information from the terminal during the random access process, wherein the first indication information is used to indicate that the random access process is used to update the TA, and/or , the first indication information is used to request to reserve the first preconfigured uplink resource PUR allocated to the terminal, so as to trigger the terminal to remain in an idle state. 8. The method according to claim 7, characterized in that the network device sends timing advance TA information to the terminal during the random access process, including: the network device sends to the terminal the information carried in the random access. Enter the TA information in message 2 during the process. 9. The method according to claim 8, wherein the network device receives the first indication information from the terminal during the random access process, including: The network device receives the message 3 from the terminal during the random access process, and the first indication information is carried in the message 3. 10. The method according to any one of claims 7-9, characterized in that the method further includes: The network device sends second indication information to the terminal, where the second indication information is used to instruct release of the first PUR. 11. The method according to claim 10, characterized in that the network device sends second indication information to the terminal, including: The network device sends message 4 to the terminal during the random access process, and the second indication information is carried in the message 4. 12. The method according to any one of claims 7-11, characterized in that the method further includes: The network device receives retention time information from the terminal indicating the first PUR. 13. A communication device, characterized by comprising: A receiving unit, configured to receive timing advance TA information from the network device during the random access process; A sending unit configured to send first indication information to the network device during the random access process, where the first indication information is used to indicate that the random access process is used to update the TA, and/ Or, the first indication information is used to request to reserve the first preconfigured uplink resource PUR to trigger the communication device to remain in an idle state. 14. The device according to claim 13, wherein the receiving unit is specifically configured to receive the TA information carried in message 2 in the random access process. 15. The device according to claim 13 or 14, characterized in that the sending unit is specifically configured to send the message 3 in the random access process to the network device, and the first indication information is carried in the in message 3. 16. The device according to any one of claims 13 to 15, characterized in that the receiving unit is further configured to receive second indication information from the network device, the second indication information is used to indicate release The first PUR. 17. The apparatus according to claim 16, wherein the receiving unit is further configured to receive the message 4 from the network device during the random access process, and the second indication information is carried in Said message 4. 18. The apparatus according to any one of claims 13 to 17, wherein the sending unit is further configured to send the retention time information of the first PUR to the network device. 19. A communication device, characterized by comprising: A sending unit, used to send timing advance TA information to the terminal during the random access process; A receiving unit configured to receive first indication information from the terminal during the random access process, wherein the first indication information is used to indicate that the random access process is used to update the TA, and/ Or, the first indication information is used to request to reserve the first preconfigured uplink resource PUR allocated to the terminal, so as to trigger the terminal to remain in an idle state. 20. The device according to claim 19, wherein the sending unit is specifically configured to send the TA information carried in the message 2 in the random access process to the terminal. 21. The device according to claim 19 or 20, characterized in that the receiving unit is specifically configured to receive the message 3 from the terminal during the random access process, and the first indication information is carried in the message. 3 in. 22. The device according to any one of claims 19 to 21, characterized in that the sending unit is further configured to send second indication information to the terminal, the second indication information is used to instruct to release the First PUR. 23. The device according to claim 22, wherein the sending unit is further configured to send message 4 to the terminal during the random access process, and the second indication information is carried in the in message 4. 24. The device according to any one of claims 19 to 23, wherein the receiving unit is further configured to receive retention time information indicating the first PUR from the terminal. 25. A computer-readable storage medium, characterized by comprising instructions that, when executed, cause the method of any one of claims 1 to 12 to be executed.