WO2021031030A1

WO2021031030A1 - Communication method and communication apparatus

Info

Publication number: WO2021031030A1
Application number: PCT/CN2019/101206
Authority: WO
Inventors: 卢前溪; 杨皓睿; 刘建华
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2021-02-25
Also published as: CN113491162A

Abstract

Disclosed is a communication method, comprising: a relay terminal device determining first information, wherein the first information comprises first radio access technology (RAT) information and/or first coverage information of a first terminal device, the first terminal device being a remote terminal device; and the relay terminal device sending the first information to a network device. In the above-mentioned method, after receiving the first information, the network device formulating an appropriate control policy according to the first RAT information and/or the first coverage information of the first terminal device, so that the communication quality of the remote terminal device in a complex communication scenario is improved.

Description

Communication method and communication device

Technical field

This application relates to the field of communication, and specifically to a communication method and communication device.

Background technique

The 5th generation (5G) communication system supports communication between vehicles and everything (V2X). V2X communication is a sidelink transmission technology. A terminal device does not need to be forwarded by a network device. Communicate directly with another terminal device, thus having higher spectrum efficiency and lower transmission delay.

A side link transmission method is: the terminal device A and the terminal device B establish a side link, and the terminal device B communicates with the network device. Among them, the terminal device A may be called a remote terminal device, and the terminal device B may be called a relay terminal device. The relay terminal device can report the remote terminal device's identifier (ID) and Internet protocol (IP) information to the network device. Based on this information, the network device can identify the remote terminal device and manage and maintain the remote terminal device. Bearer and/or session of end terminal equipment.

However, when the remote terminal device faces a complex scenario, for example, when the signal quality of the cell where the remote terminal device is located decreases, the network device cannot further manage the remote terminal device based on the above information. How to enhance the ability of network equipment to manage remote terminal equipment is currently a problem that needs to be solved.

Summary of the invention

The present application provides a communication method and communication device, which can enhance the management capability of network equipment to remote terminal equipment.

In a first aspect, a communication method is provided, including: a relay terminal device determines first information, where the first information includes first radio access technology RAT information and/or first coverage information of the first terminal device, The first terminal device is a remote terminal device; the relay terminal device sends the first information to a network device.

In a second aspect, another communication method is provided, including: a first terminal device sends first information to a relay terminal device, where the first information includes first radio access technology RAT information of the first terminal device and /Or the first coverage area information, the first terminal device is a remote terminal device.

In a third aspect, another communication method is provided, including: a network device receives first information from a relay terminal device, where the first information includes first radio access technology RAT information and/or first coverage of the first terminal device Range information, the first terminal device is a remote terminal device.

In a fourth aspect, a communication device is provided for executing the method of the first aspect. Specifically, the device includes a functional module for executing the method in the first aspect.

In a fifth aspect, a communication device is provided for executing the method of the second aspect. Specifically, the device includes a functional module for executing the method in the second aspect.

In a sixth aspect, a communication device is provided for executing the method of the third aspect. Specifically, the device includes a functional module for executing the method in the third aspect.

In a seventh aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above first aspect.

In an eighth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above second aspect.

In a ninth aspect, a network device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the third aspect.

In a tenth aspect, a chip is provided for executing the method in the first aspect. Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip is used to execute the method in the first aspect.

In an eleventh aspect, a chip is provided for executing the method in the second aspect. Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip is used to execute the method in the second aspect.

In a twelfth aspect, a chip is provided for executing the method in the third aspect. Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip is used to execute the method in the third aspect.

In a thirteenth aspect, a computer-readable storage medium is provided for storing a computer program that enables a computer to execute the method in the above-mentioned first aspect.

In a fourteenth aspect, a computer-readable storage medium is provided for storing a computer program that enables a computer to execute the method in the second aspect.

In a fifteenth aspect, a computer-readable storage medium is provided for storing a computer program that enables a computer to execute the method in the third aspect.

In a sixteenth aspect, a computer program product is provided, including computer program instructions that cause a computer to execute the method in the first aspect.

In a seventeenth aspect, a computer program product is provided, which includes computer program instructions that cause a computer to execute the method in the second aspect.

In an eighteenth aspect, a computer program product is provided, including computer program instructions that cause a computer to execute the method in the third aspect.

In a nineteenth aspect, a computer program is provided, which, when run on a computer, causes the computer to execute the method in the first aspect.

In a twentieth aspect, a computer program is provided, which when running on a computer, causes the computer to execute the method in the second aspect.

In the twenty-first aspect, a computer program is provided, which, when run on a computer, causes the computer to execute the method in the third aspect.

In the communication method provided in this application, after receiving the first information, the network device formulates an appropriate control strategy according to the first RAT information and/or the first coverage information of the first terminal device to improve the remote terminal device (ie, The first terminal device) communication quality in a complex communication scenario.

Description of the drawings

Figure 1 is a schematic diagram of a communication system suitable for the present application;

Figure 2 is a schematic diagram of a communication method provided by the present application;

Figure 3 is a schematic diagram of another communication method provided by the present application;

Fig. 4 is a schematic diagram of a communication device provided by the present application;

Fig. 5 is a schematic diagram of another communication device provided by the present application;

Fig. 6 is a schematic diagram of yet another communication device provided by the present application;

Fig. 7 is a schematic diagram of a communication device provided by the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

Fig. 1 shows a schematic diagram of a communication system 100 suitable for the present application.

The system 100 includes a network device 110, a terminal device 121, and a terminal device 122. The terminal device 121 and the terminal device 122 may be vehicles with communication functions, or in-vehicle electronic systems, or mobile phones, or wearable electronic devices, or other communication devices that implement the V2X protocol.

The network device 110 may be an evolved base station (evolutional node B, eNB) in an LTE system, or a base station (gNB) in a 5G communication system. The above network device is only an example. The network device 110 may also be a relay station, Entry points, in-vehicle devices, wearable devices, and other types of devices.

Before transmitting data through the side link, the terminal device 121 and the terminal device 122 may determine the side link transmission resource through the instruction of the network device 110. The terminal device 121 and the terminal device 122 may not determine the side link transmission resource through the instruction of the network device 110.

The above two examples are the two transmission modes of side link communication, the centralized scheduling transmission mode (also referred to as Mode A) and the distributed transmission mode (also referred to as Mode B). Below, a brief introduction to the two transmission modes:

Centralized scheduling transmission mode: In this mode, the terminal device needs to apply for resources from the network device every time before sending data, and send V2X service data according to the resources allocated by the network device. Since the resources of the terminal equipment are uniformly allocated by the network equipment, there will be no situation where adjacent terminal equipment is allocated the same resources. Therefore, the centralized transmission mode can ensure better transmission reliability. However, since signaling needs to be exchanged each time between the terminal equipment and the network equipment, relatively speaking, compared with the distributed transmission mode, the transmission delay of sending data in the centralized scheduling transmission mode is longer.

Distributed transmission mode: In a scenario with network coverage, network equipment configures a resource pool for terminal equipment through system information block (SIB) or radio resource control (RRC) signaling to send V2X data to terminal equipment Data can be sent by random selection, based on listening reservation mechanism, or based on partial listening reservation mechanism from at least part of the resources obtained from the master and slave resource pools. In a scenario without network coverage, the terminal device autonomously sends data from at least part of the resources acquired from the resource pool in the pre-configuration information. The pre-configuration information may be a resource pool configured inside the terminal when the terminal leaves the factory, or may be information pre-configured by a network device and stored inside the terminal. Since terminal devices independently select resources, it may happen that different terminal devices select the same resource to send data, so transmission collisions may occur.

The communication system 100 is only an example, and the communication system applicable to the present application is not limited to this.

In the following, the communication method of the V2X communication system provided by this application will be described in detail.

Figure 2 is a communication method provided by this application. Method 200 includes:

S201: Establish a connection (link establishment).

The first terminal device is a remote terminal device, and the first terminal device establishes a side link connection with the relay terminal device. The side link connection may use a centralized scheduling transmission mode or a distributed transmission mode.

In this application, "first" and "second" are used to distinguish two different individuals in the same type of object. For example, "first terminal device" and "second terminal device" described below indicate two There are no other restrictions for different terminal devices.

S202: The first terminal device sends the first information to the relay terminal device.

The first information includes first radio access technology (radio access technology, RAT) information and/or first coverage information.

The first RAT information is used to indicate the information of the RAT used by the side link of the first terminal device. For example, the first RAT information may be long term evolution (LTE) side link connection information and/or new Wireless (new radio, NR) side link connection information.

The first coverage information is used to indicate at least one of the following situations:

Whether the first terminal device is within the coverage of the cellular network device;

The identity of the public land mobile network (PLMN) covering the first terminal device;

The identification of the tracking area (TA) covering the first terminal device;

The identity of the mobility management entity (MME) of the first terminal device;

The identification of the access and mobility management function (AMF) of the first terminal device;

The cell identity or base station identity to which the first terminal device belongs.

The first coverage area information may be current coverage area information of the first terminal device, or coverage area information when the first terminal device communicates with the network device for the last time. If the first coverage information is the coverage information when the first terminal device communicates with the network device for the last time, the first coverage information may be carried in the identification information of the first terminal device, for example, the first coverage information is MME The identifier can be carried in the globally unique temporary UE identifier (GUTI).

Optionally, the first information may also include at least one of the following information:

User encrypted identifier (subscription concealed identifier, SUCI), user permanent identifier (subscription permanent identifier, SUPI), permanent equipment identifier (permanent equipment identifier, PEI), general public user identifier (generic public subscription identifier, GPSI).

Optionally, the first information may also include IP information or port information of the first terminal device.

S203: The relay terminal device receives the first information from the first terminal device, and sends the first information to the network device.

The aforementioned network equipment includes access network equipment and/or core network equipment. If the relay terminal device sends the first information to the access network device, the access network device may send the first information to the core network device through the S1 interface or the N2 interface. The core network device is, for example, AMF, MME, or session management function (session management function, SMF). The core network device may save the first information and send the first information to other network elements, for example, to a packet data network gateway (packet data network gateway). data network gateway (PGW) or user plane function (user plane function, UPF), so that the PGE or UPF can control the first terminal device based on a specific policy.

The relay terminal device may also send coverage information of the relay terminal device to the network device, so that the network device can formulate a control strategy more suitable for the first terminal device. The coverage information of the relay terminal device may or may not be sent together with the first information.

In some cases, the first information sent by the relay terminal device to the network device may be determined by the relay terminal device itself, for example, after the relay terminal device establishes a connection with the first terminal device, the first RAT information can be determined; For another example, when it is necessary to report the coverage information of the first terminal device when the first terminal device communicated with the network device for the last time, the relay terminal device may report the coverage information of the first terminal device received the last time to the network device.

After the network device receives the first information, it formulates an appropriate control strategy according to the first RAT information and/or the first coverage information of the first terminal device to improve the remote terminal device (ie, the first terminal device) in complex communication scenarios The quality of communication.

After receiving the first information, the network device can also perform the following steps.

S204. Send an acknowledgement (acknowledgement, ACK) to the relay terminal device.

The above method is an example in which the relay terminal device directly receives the first information from the first terminal device. Optionally, the relay terminal device may also receive the first information of the first terminal device through other remote terminal devices, as shown in FIG. 3 As shown, the method 300 includes:

S301: The second terminal device establishes a connection with the relay terminal device. Wherein, the second terminal device is the next hop terminal device of the first terminal device.

S302: The second terminal device establishes a connection with the first terminal device.

This application does not limit the execution sequence of S302 to S301.

S303: The first terminal device sends the first information to the second terminal device.

S303 may be executed before S301, may be executed after S301, or simultaneously with S301. The first information in the method 300 is the same as the first information in the method 200, and will not be repeated here.

S304: The second terminal device sends the first information to the relay terminal device.

Optionally, the second terminal device may also send second information to the relay terminal device, where the second information includes second RAT information and/or second coverage information of the second terminal device. The second RAT information may be RAT information of the connection between the second terminal device and the first terminal device, and may also be RAT information of the connection between the second terminal device and the relay terminal device.

S305: The relay terminal device sends the first information to the network device.

S306: Send an ACK to the relay terminal device.

The example of the communication method provided by this application is described in detail above. It can be understood that, in order to realize the above-mentioned functions, the communication device includes a hardware structure and/or software module corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The present application may divide the communication device into functional units according to the foregoing method examples. For example, each function may be divided into each functional unit, or two or more functions may be integrated into one processing unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in this application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

Fig. 4 is a schematic structural diagram of a communication device provided by the present application. The device 400 includes a processing unit 410. Optionally, it may also include a sending unit 420 and a receiving unit 430. The sending unit 420 can execute the sending step under the control of the processing unit 410, and the receiving unit 430 can execute under the control of the processing unit 410. The receiving step (or obtaining step).

The processing unit 410 is configured to determine first information, where the first information includes first RAT information and/or first coverage information of a first terminal device, and the first terminal device is a remote terminal device;

The sending unit 420 is configured to send the first information to a network device.

Optionally, the first RAT information includes RAT information of a side link between the first terminal device and the apparatus 400.

Optionally, the first RAT information includes NR information and/or LTE information.

Optionally, the first coverage area information is used to indicate at least one of the following situations: whether the first terminal device is within the coverage area of a cellular network device; an identity of a PLMN covering the first terminal device; and coverage The identity of the TA of the first terminal device; the identity of the MME of the first terminal device; the identity of the AMF of the first terminal device; the cell identity or base station identity of the first terminal device.

Optionally, the first coverage area information is current coverage area information of the first terminal device.

Optionally, the first coverage information is coverage information when the first terminal device communicates with the network device for the last time.

Optionally, the first coverage information is carried in identification information of the first terminal device.

Optionally, the identification information of the first terminal device is GUTI.

Optionally, the first information further includes at least one of the following information: SUCI, SUPI, PEI, GPSI.

Optionally, the network device includes an access network device and/or a core network device.

Optionally, the processing unit 410 is specifically configured to: receive the first information of the first terminal device from a second terminal device through the receiving unit 430, and the second terminal device is a remote terminal device.

Optionally, the processing unit 410 is further configured to: determine that the second terminal device is the next hop terminal of the first terminal device according to the first information of the first terminal device received from the second terminal device equipment.

Optionally, the processing unit 410 is further configured to: receive second information from the second terminal device through the receiving unit, where the second information includes second RAT information of the second terminal device and/or Second coverage information; the second information is sent to the network device through the sending unit 420.

Optionally, the sending unit 420 is further configured to send coverage information of the apparatus to the network device.

Fig. 5 is a schematic structural diagram of another communication device provided by the present application. The device 500 includes a processing unit 510 and a sending unit 520, and the sending unit 520 can perform sending steps under the control of the processing unit 510.

The sending unit 520 is configured to perform: sending first information to the relay terminal device, the first information includes the first RAT information and/or the first coverage information of the device, and the device is a remote terminal device .

Optionally, the first RAT information includes RAT information of a side link between the apparatus and the relay terminal device.

Optionally, the first coverage area information is used to indicate at least one of the following situations: whether the device is within the coverage area of a cellular network device; the identity of the PLMN that covers the device; the TA that covers the device Identity; the identity of the MME of the device; the identity of the access and mobility management function AMF of the device; the cell identity or base station identity of the device.

Optionally, the first coverage area information is current coverage area information of the device.

Optionally, the first coverage information is coverage information when the apparatus communicates with the network device for the last time.

Optionally, the first coverage information is carried in identification information of the device.

Optionally, the identification information of the device is GUTI.

Optionally, the sending unit 520 is specifically configured to send the first information to the relay terminal device through a second terminal device, where the second terminal device is a remote terminal device.

Fig. 6 is a schematic structural diagram of a communication device provided by the present application. The device 600 includes a processing unit 610. Optionally, it may also include a sending unit 620 and a receiving unit 630. The sending unit 620 can execute the sending step under the control of the processing unit 610, and the receiving unit 630 can execute under the control of the processing unit 610. The receiving step (or obtaining step).

The processing unit 610 is configured to control the receiving unit 630 to execute:

The first information is received from the relay terminal device, the first information includes the first RAT information and/or the first coverage information of the first terminal device, and the first terminal device is a remote terminal device.

Optionally, the first RAT information includes RAT information of a side link between the first terminal device and the relay terminal device.

Optionally, the first coverage area information is coverage area information when the first terminal device communicates with the apparatus for the last time.

Optionally, the device is a core network device, and the receiving unit 630 is specifically configured to receive the first information through an S1 interface or an N2 interface.

Optionally, the device is an access network device, and the sending unit 620 is configured to send the first information of the first terminal device to the core network device through an S1 interface or an N2 interface.

Optionally, the receiving unit 630 is further configured to: receive coverage information of the relay terminal device from the relay terminal device.

Optionally, the receiving unit 630 is further configured to: receive second information from the relay terminal device, the second information including the second RAT information and/or the second coverage information of the second terminal device, and the second The terminal device is the next hop terminal device of the first terminal device.

Optionally, the sending unit 620 is further configured to send feedback information to the relay terminal device, where the feedback information is used to indicate that the first information is successfully received.

Fig. 7 shows a schematic structural diagram of a communication device provided by the present application. The dotted line in Figure 7 indicates that the unit or the module is optional. The device 700 may be used to implement the methods described in the foregoing method embodiments. The device 700 may be a terminal device or a network device or a chip.

The device 700 includes one or more processors 701, and the one or more processors 701 can support the device 700 to implement the method in the method embodiment corresponding to FIG. 2 or FIG. 3. The processor 701 may be a general-purpose processor or a special-purpose processor. For example, the processor 701 may be a central processing unit (CPU). The CPU can be used to control the device 700, execute software programs, and process data of the software programs. The device 700 may further include a communication unit 705 to implement signal input (reception) and output (transmission).

For example, the device 700 may be a chip, and the communication unit 705 may be an input and/or output circuit of the chip, or the communication unit 705 may be a communication interface of the chip, and the chip may be used as a terminal device or a network device or other wireless communication device Part.

For another example, the device 700 may be a terminal device or a network device, and the communication unit 705 may be a transceiver of the terminal device or the network device, or the communication unit 705 may be a transceiver circuit of the terminal device or the network device.

The device 700 may include one or more memories 702 with a program 704 stored thereon. The program 704 can be run by the processor 701 to generate an instruction 703 so that the processor 701 executes the method described in the foregoing method embodiment according to the instruction 703. Optionally, the memory 702 may also store data. Optionally, the processor 701 may also read data stored in the memory 702. The data may be stored at the same storage address as the program 704, and the data may also be stored at a different storage address from the program 704.

The processor 701 and the memory 702 may be provided separately or integrated together, for example, integrated on a single board of a network device or a system on chip (SOC) of a terminal device.

The device 700 may also include an antenna 706. The communication unit 705 is configured to implement the transceiver function of the device 700 through the antenna 706.

For the specific manner in which the processor 701 executes the communication method, reference may be made to the related description in the method embodiment.

It should be understood that each step of the foregoing method embodiment may be completed by a logic circuit in the form of hardware or instructions in the form of software in the processor 701. The processor 701 may be a CPU, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices , For example, discrete gates, transistor logic devices, or discrete hardware components.

This application also provides a computer program product, which, when executed by the processor 701, implements the method described in any method embodiment in this application.

The computer program product may be stored in the memory 702, for example, a program 704. The program 704 is finally converted into an executable object file that can be executed by the processor 701 after preprocessing, compilation, assembly, and linking.

This application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a computer, the method described in any method embodiment in this application is implemented. The computer program can be a high-level language program or an executable target program.

The computer-readable storage medium is, for example, the memory 702. The memory 702 may be a volatile memory or a non-volatile memory, or the memory 702 may include both a volatile memory and a non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM).

Those skilled in the art can clearly understand that, for the convenience and conciseness of the description, the specific working process and technical effects of the device and equipment described above can refer to the corresponding process and technical effects in the foregoing method embodiments. No longer.

In the several embodiments provided in this application, the disclosed system, device, and method may be implemented in other ways. For example, some features of the method embodiments described above may be ignored or not implemented. The device embodiments described above are merely illustrative. The division of units is only a logical function division. In actual implementation, there may be other division methods, and multiple units or components may be combined or integrated into another system. In addition, the coupling between the units or the coupling between the components may be direct coupling or indirect coupling, and the foregoing coupling includes electrical, mechanical, or other forms of connection.

It should be understood that in the various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation.

In addition, the terms "system" and "network" in this article are often used interchangeably in this article. The term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three types of relationships. For example, A and/or B can mean that there is A alone, and both A and B exist. There are three cases of B. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship.

In short, the above descriptions are only preferred embodiments of the technical solutions of the present application, and are not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A communication method, characterized in that it comprises:

The relay terminal device determines first information, where the first information includes first radio access technology RAT information and/or first coverage information of the first terminal device, and the first terminal device is a remote terminal device;

The relay terminal device sends the first information to the network device.
The method according to claim 1, wherein the first RAT information includes RAT information of a side link between the first terminal device and the relay terminal device.
The method according to claim 1 or 2, wherein the first RAT information includes new radio NR information and/or Long Term Evolution LTE information.
The method according to any one of claims 1 to 3, wherein the first coverage information is used to indicate at least one of the following situations:

Whether the first terminal device is within the coverage of a cellular network device;

The identity of the public land mobile network PLMN covering the first terminal device;

The identifier of the tracking area TA covering the first terminal device;

The identity of the mobility management entity MME of the first terminal device;

The identifier of the access and mobility management function AMF of the first terminal device;

The cell identity or base station identity of the first terminal device.
The method according to any one of claims 1 to 4, wherein the first coverage information is current coverage information of the first terminal device.
The method according to any one of claims 1 to 4, wherein the first coverage information is coverage information when the first terminal device communicates with the network device for the last time.
The method according to claim 6, wherein the first coverage area information is carried in the identification information of the first terminal device.
The method according to claim 7, wherein the identification information of the first terminal device is a globally unique temporary user equipment identification GUTI.
The method according to any one of claims 1 to 8, wherein the first information further includes at least one of the following information:

User encryption identification SUCI, user permanent identification SUPI, permanent equipment identification PEI, general public user identification GPSI.
The method according to any one of claims 1 to 9, wherein the network device comprises an access network device and/or a core network device.
The method according to any one of claims 1 to 10, wherein determining the first information by the relay terminal device comprises:

The relay terminal device receives the first information of the first terminal device from a second terminal device, and the second terminal device is a remote terminal device.
The method according to claim 11, further comprising:

The relay terminal device determines that the second terminal device is the next hop terminal device of the first terminal device according to the first information of the first terminal device received from the second terminal device.
The method according to claim 11 or 12, further comprising:

Receiving, by the relay terminal device, second information from the second terminal device, the second information including second RAT information and/or second coverage information of the second terminal device;

The relay terminal device sends the second information to the network device.
The method according to any one of claims 1 or 13, further comprising:

The relay terminal device sends coverage information of the relay terminal device to the network device.
A communication method, characterized in that it comprises:

The first terminal device sends first information to the relay terminal device, where the first information includes the first radio access technology RAT information and/or the first coverage information of the first terminal device, and the first terminal device It is a remote terminal device.
The method according to claim 15, wherein the first RAT information includes RAT information of a side link between the first terminal device and the relay terminal device.
The method according to claim 15 or 16, wherein the first RAT information includes new radio NR information and/or Long Term Evolution LTE information.
The method according to any one of claims 15 to 17, wherein the first coverage information is used to indicate at least one of the following situations:

Whether the first terminal device is within the coverage of a cellular network device;

The identity of the public land mobile network PLMN covering the first terminal device;

The identifier of the tracking area TA covering the first terminal device;

The identity of the mobility management entity MME of the first terminal device;

The identifier of the access and mobility management function AMF of the first terminal device;

The cell identity or base station identity of the first terminal device.
The method according to claim 18, wherein the first coverage information is current coverage information of the first terminal device.
The method according to claim 18, wherein the first coverage area information is the coverage area information when the first terminal device communicates with the network device for the last time.
The method according to claim 20, wherein the first coverage information is carried in the identification information of the first terminal device.
The method according to claim 21, wherein the identification information of the first terminal device is a globally unique temporary user equipment identification GUTI.
The method according to any one of claims 20 to 22, wherein the network device comprises an access network device and/or a core network device.
The method according to any one of claims 15 to 23, wherein the first information further comprises at least one of the following information:

User encryption identification SUCI, user permanent identification SUPI, user equipment identification PEI, and general public user identification GPSI.
The method according to any one of claims 15 to 24, wherein the sending of the first information by the first terminal device to the relay terminal device comprises:

The first terminal device sends the first information to the relay terminal device through a second terminal device, and the second terminal device is a remote terminal device.
A communication method, characterized in that it comprises:

The network device receives first information from the relay terminal device, where the first information includes first radio access technology RAT information and/or first coverage information of the first terminal device, and the first terminal device is a remote terminal device .
The method according to claim 26, wherein the first RAT information includes RAT information of a side link between the first terminal device and the relay terminal device.
The method according to claim 26 or 27, wherein the first RAT information includes new radio NR information and/or Long Term Evolution LTE information.
The method according to any one of claims 26 to 28, wherein the first coverage information is used to indicate at least one of the following situations:

Whether the first terminal device is within the coverage of a cellular network device;

The identity of the public land mobile network PLMN covering the first terminal device;

The identifier of the tracking area TA covering the first terminal device;

The identity of the mobility management entity MME of the first terminal device;

The identifier of the access and mobility management function AMF of the first terminal device;

The cell identity or base station identity of the first terminal device.
The method according to claim 29, wherein the first coverage information is current coverage information of the first terminal device.
The method according to claim 29, wherein the first coverage information is coverage information when the first terminal device communicates with the network device for the last time.
The method according to claim 31, wherein the first coverage area information is carried in the identification information of the first terminal device.
The method according to claim 32, wherein the identification information of the first terminal device is a globally unique temporary user equipment identification GUTI.
The method according to any one of claims 26 to 33, wherein the network device is a core network device, and the network device receiving first information from a relay terminal device comprises:

The core network device receives the first information through the S1 interface or the N2 interface.
The method according to any one of claims 26 to 33, wherein the network device is an access network device, and the method further comprises:

The access network device sends the first information of the first terminal device to the core network device through the S1 interface or the N2 interface.
The method according to any one of claims 26 to 35, further comprising:

The network device receives coverage information of the relay terminal device from the relay terminal device.
The method according to any one of claims 26 to 36, further comprising:

The network device receives second information from the relay terminal device, which includes second RAT information and/or second coverage information of the second terminal device, and the second terminal device is the first terminal device The next hop terminal device.
The method according to any one of claims 26 to 37, wherein the first information further comprises at least one of the following information:

User encryption identification SUCI, user permanent identification SUPI, permanent equipment identification PEI, general public user identification GPSI.
The method according to any one of claims 26 to 38, further comprising:

The network device sends feedback information to the relay terminal device, where the feedback information is used to indicate that the first information is successfully received.
A communication device, characterized by comprising a processing unit and a sending unit,

The processing unit is configured to determine first information, where the first information includes first radio access technology RAT information and/or first coverage information of a first terminal device, and the first terminal device is a remote terminal equipment;

The sending unit is configured to send the first information to a network device.
The apparatus according to claim 40, wherein the first RAT information comprises RAT information of a side link between the first terminal device and the apparatus.
The apparatus according to claim 40 or 41, wherein the first RAT information includes new radio NR information and/or Long Term Evolution LTE information.
The device according to any one of claims 40 to 42, wherein the first coverage information is used to indicate at least one of the following situations:

Whether the first terminal device is within the coverage of a cellular network device;

The identity of the public land mobile network PLMN covering the first terminal device;

The identifier of the tracking area TA covering the first terminal device;

The identity of the mobility management entity MME of the first terminal device;

The identifier of the access and mobility management function AMF of the first terminal device;

The cell identity or base station identity of the first terminal device.
The apparatus according to any one of claims 40 to 43, wherein the first coverage information is current coverage information of the first terminal device.
The apparatus according to any one of claims 40 to 43, wherein the first coverage information is coverage information when the first terminal device communicates with the network device for the last time.
The apparatus according to claim 45, wherein the first coverage area information is carried in the identification information of the first terminal device.
The apparatus according to claim 46, wherein the identification information of the first terminal device is a global unique temporary user equipment identification GUTI.
The device according to any one of claims 40 to 47, wherein the first information further comprises at least one of the following information:

User encryption identification SUCI, user permanent identification SUPI, permanent equipment identification PEI, general public user identification GPSI.
The apparatus according to any one of claims 40 to 48, wherein the network equipment comprises an access network equipment and/or a core network equipment.
The device according to any one of claims 40 to 49, wherein the device further comprises a receiving unit, and the processing unit is specifically configured to:

The first information of the first terminal device is received from the second terminal device through the receiving unit, and the second terminal device is a remote terminal device.
The device according to claim 50, wherein the processing unit is further configured to:

According to receiving the first information of the first terminal device from the second terminal device, it is determined that the second terminal device is the next hop terminal device of the first terminal device.
The device according to claim 50 or 51, wherein the processing unit is further configured to:

Receiving second information from the second terminal device through the receiving unit, where the second information includes second RAT information and/or second coverage information of the second terminal device;

Sending the second information to the network device through the sending unit.
The device according to any one of claims 40 or 52, wherein the sending unit is further configured to:

Sending the coverage information of the device to the network device.
A communication device, characterized by comprising a processing unit and a sending unit, the processing unit being used to control the sending unit to execute:

Sending first information to the relay terminal device, where the first information includes the first radio access technology RAT information and/or the first coverage information of the device, and the device is a remote terminal device.
The apparatus according to claim 54, wherein the first RAT information comprises RAT information of a side link between the apparatus and the relay terminal device.
The apparatus according to claim 54 or 55, wherein the first RAT information includes new radio NR information and/or Long Term Evolution LTE information.
The device according to any one of claims 54 to 56, wherein the first coverage information is used to indicate at least one of the following situations:

Whether the device is within the coverage of cellular network equipment;

The identity of the public land mobile network PLMN covering the device;

The identification of the tracking area TA covering the device;

The identity of the mobility management entity MME of the device;

The identifier of the access and mobility management function AMF of the device;

The cell identity or base station identity of the device.
The device according to claim 57, wherein the first coverage information is current coverage information of the device.
The device according to claim 57, wherein the first coverage information is coverage information when the device communicates with a network device for the last time.
The device of claim 59, wherein the first coverage area information is carried in identification information of the device.
The apparatus according to claim 60, wherein the identification information of the apparatus is a globally unique temporary user equipment identification GUTI.
The apparatus according to any one of claims 59 to 61, wherein the network device comprises an access network device and/or a core network device.
The device according to any one of claims 54 to 62, wherein the first information further comprises at least one of the following information:

User encryption identification SUCI, user permanent identification SUPI, user equipment identification PEI, and general public user identification GPSI.
The device according to any one of claims 54 to 63, wherein the sending unit is specifically configured to:

The first information is sent to the relay terminal device through a second terminal device, and the second terminal device is a remote terminal device.
A communication device, characterized by comprising a processing unit and a receiving unit, the processing unit being used to control the receiving unit to execute:

The first information is received from the relay terminal device, where the first information includes first radio access technology RAT information and/or first coverage information of the first terminal device, and the first terminal device is a remote terminal device.
The apparatus according to claim 65, wherein the first RAT information comprises RAT information of a side link between the first terminal device and the relay terminal device.
The apparatus according to claim 65 or 66, wherein the first RAT information includes new radio NR information and/or Long Term Evolution LTE information.
The device according to any one of claims 65 to 67, wherein the first coverage information is used to indicate at least one of the following situations:

Whether the first terminal device is within the coverage of a cellular network device;

The identity of the public land mobile network PLMN covering the first terminal device;

The identifier of the tracking area TA covering the first terminal device;

The identity of the mobility management entity MME of the first terminal device;

The identifier of the access and mobility management function AMF of the first terminal device;

The cell identity or base station identity of the first terminal device.
The apparatus according to claim 68, wherein the first coverage information is current coverage information of the first terminal device.
The apparatus according to claim 68, wherein the first coverage area information is coverage area information when the first terminal device communicated with the apparatus for the last time.
The apparatus according to claim 70, wherein the first coverage area information is carried in identification information of the first terminal device.
The apparatus according to claim 71, wherein the identification information of the first terminal device is a globally unique temporary user equipment identification GUTI.
The device according to any one of claims 65 to 72, wherein the device is a core network device, and the receiving unit is specifically configured to:

The first information is received through the S1 interface or the N2 interface.
The device according to any one of claims 65 to 72, wherein the device is an access network device, and the device further comprises a sending unit, configured to:

Send the first information of the first terminal device to the core network device through the S1 interface or the N2 interface.
The device according to any one of claims 65 to 74, wherein the receiving unit is further configured to:

Receiving coverage information of the relay terminal device from the relay terminal device.
The device according to any one of claims 65 to 75, wherein the receiving unit is further configured to:

Receive second information from the relay terminal device, which includes second RAT information and/or second coverage information of the second terminal device, and the second terminal device is the next hop of the first terminal device Terminal Equipment.
The device according to any one of claims 65 to 76, wherein the first information further comprises at least one of the following information:

User encryption identification SUCI, user permanent identification SUPI, permanent equipment identification PEI, general public user identification GPSI.
The device according to any one of claims 65 to 77, wherein the device further comprises a sending unit, configured to:

Send feedback information to the relay terminal device, where the feedback information is used to indicate that the first information is successfully received.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 14 The method according to one item, or the method according to any one of claims 15 to 25 is performed.
A network device, characterized by comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any of claims 26 to 39 The method described in one item.
A chip, characterized by comprising: a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes: the method according to any one of claims 1 to 14, or , The method according to any one of claims 15 to 25.
A chip, characterized by comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 26 to 39.
A computer-readable storage medium, characterized in that it is used to store a computer program that causes a computer to execute: the method according to any one of claims 1 to 14, or as claimed in claims 15 to 25 Any one of the methods.
A computer-readable storage medium, characterized in that it is used to store a computer program that enables a computer to execute: the method according to any one of claims 26 to 39.
A computer program product, characterized by comprising computer program instructions that cause a computer to execute: the method according to any one of claims 1 to 14, or, as claimed in any one of claims 15 to 25 The method described.
A computer program product, characterized by comprising computer program instructions that cause a computer to execute the method according to any one of claims 26 to 39.
A computer program, wherein the computer program causes a computer to execute: the method according to any one of claims 1 to 14, or the method according to any one of claims 15 to 25.
A computer program, wherein the computer program causes a computer to execute: the method according to any one of claims 26 to 39.