WO2022012466A1

WO2022012466A1 - Paging method and communication apparatus

Info

Publication number: WO2022012466A1
Application number: PCT/CN2021/105732
Authority: WO
Inventors: 许胜锋; 杨艳梅; 李濛; 周润泽
Original assignee: 华为技术有限公司
Priority date: 2020-07-16
Filing date: 2021-07-12
Publication date: 2022-01-20
Also published as: CN113950146A; CN113950146B

Abstract

Provided are a paging method and a communication apparatus. The method comprises: a first AMF node receiving a second message from a second AMF node, with the second message being used for requesting the first AMF node to page a second terminal by means of a first terminal, wherein the first AMF node is a mobility management function node of the first terminal, and the first terminal provides a relay service for the second terminal; and where the state of the first terminal is a connected state, the first AMF node sending a first message to the first terminal, wherein the first message comprises first information, the first information is used for paging the second terminal, and the first message is a non-access stratum (NAS) message. A remote terminal in a relay communication can be paged.

Description

A paging method and communication device

This application claims the priority of the Chinese patent application with the application number of 202010688521.6 and the application title of "a paging method and communication device" filed with the China Patent Office on July 16, 2020, the entire contents of which are incorporated herein by reference middle.

technical field

The present application relates to the field of communication, and more particularly, to a paging method and a communication device.

Background technique

In the field of communication, user equipment (UE) can communicate through a cellular communication interface, namely, a user equipment-Universal Mobile Telecommunications Terrestrial Access Network (UE-UTRAN, Uu) interface, and can also communicate through a direct-connected communication interface, namely The near field-based service communication (interface) 5 (proximity-based service communication (interface) 5, PC5) interface directly communicates between user equipment, and the PC5 interface can be used for information transmission on the data plane and control plane, carrying discovery messages ( Such as discovery request (Discovery Request), communication message (such as direct communication request Direct Communication Request), etc. For example, device-to-device (D2D) communication allows direct communication between terminals, and can share spectrum resources with cell terminals under the control of a cell network, thereby effectively improving spectrum resource utilization.

When the terminal is outside the network coverage or the communication quality between the terminal and the radio access network (RAN) is poor, the indirect communication method can be adopted, that is, the relay communication can be realized through the communication architecture of the PC5 interface and the Uu interface. Specifically, the data of the terminal (referred to as a remote terminal, or a remote UE) can be transmitted to the relay terminal (also called a relay UE) through the PC5 interface, and the relay terminal can then pass between the relay terminal and the network device. The Uu interface of the remote terminal sends the data of the remote terminal to the network. In indirect communication, the remote terminal registers with the network and establishes a protocol data unit (PDU) session. When the remote terminal is in an idle state and its data arrives, how does the network device implement paging relay? The remote terminal in communication has become a problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

The present application provides a paging method and a communication device, which can realize paging of a remote terminal in relay communication.

In a first aspect, a paging method is provided, and the method can be executed by a first mobility management function node or a module (such as a chip) configured in (or used for) the first mobility management function node. The execution of an AMF node is described as an example.

The method includes: a first mobility management function AMF node receiving a second message from a second AMF node, the second message being used to request the first AMF node to page the second terminal through the first terminal, wherein the first AMF node The AMF node is the mobility management function node of the first terminal, and the first terminal provides relay services for the second terminal; when the state of the first terminal is the connected state, the first AMF node sends the first terminal to the first terminal. A first message is sent, where the first message includes first information, the first information is used for paging the second terminal, and the first message is a non-access stratum NAS message.

According to the above solution, the AMF node (ie the second AMF node) of the remote terminal (ie the second terminal) requests the AMF node (the first AMF node) of the relay terminal (ie the first terminal) to page the remote terminal through the relay terminal The terminal, when the relay terminal is in a connected state, notifies the first terminal network to page the second terminal through a NAS message. It can realize network paging of remote devices in relay communication, improve the success probability of network paging remote terminals, and prevent the network from sending paging messages to multiple RANs in the tracking area, reducing the information caused by paging. This reduces overhead and improves resource utilization.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: when the first terminal is in an idle state and is unreachable, the first AMF node sends a third message to the second AMF node , the third message is used to instruct the first AMF node to reject the request of the second AMF node to page the second terminal, or the third message includes first time information, and the first time information is used to indicate the first time The time when an AMF node sends the first message to the first terminal, or the first time information is used to indicate the time when the first terminal enters the idle state and is reachable or the time when the first terminal enters the connected state.

According to the above solution, when the relay terminal is in an idle state and is unreachable, the AMF node of the relay terminal notifies the AMF node of the remote terminal to reject the paging request, or notifies the AMF node of the remote terminal that the first terminal can pass the first terminal. The waiting time for paging the second terminal, so that the AMF node of the remote terminal can determine whether to wait for the first AMF to send the first message according to the third message, or page the remote terminal in other ways, which can improve the paging distance. end-terminal efficiency.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: when the first terminal is in an idle state and is reachable, sending the first AMF node to the first radio access network RAN node Send a fourth message, the fourth message is used to page the first terminal, the fourth message includes first information, the first information is used to page the second terminal, the first RAN node is located at the first terminal in the tracking area.

According to the above solution, when the relay terminal is in an idle state and is reachable, the AMF node of the relay terminal notifies the relay terminal network to page the remote terminal through a paging message (ie, the fourth message), so that the relay terminal can The remote terminal is notified according to the paging message.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first AMF node sends a fifth message to the second AMF node, where the fifth message is used to notify where the first terminal is located status.

According to the above solution, the AMF node of the relay terminal notifies the AMF node of the remote terminal of the state of the relay terminal through the fifth message, so that the AMF node of the remote terminal can determine whether to page the remote terminal through the relay terminal according to the fifth message end terminal. The efficiency of paging the remote terminal can be improved.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first AMF node receives a sixth message from the first terminal, where the sixth message includes an identifier of the second terminal; the The first AMF node acquires the identifier of the second AMF node according to the identifier of the second terminal.

According to the above solution, the AMF node of the relay terminal can determine the identity of the AMF node of the remote terminal through the sixth message from the relay terminal, so that the AMF node of the relay terminal notifies the AMF node of the remote terminal where the relay terminal is located. state.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: the first AMF node sends a seventh message to the second AMF node, where the seventh message is used to indicate the AMF of the first terminal The node is changed to the third AMF node.

According to the above solution, when the AMF node of the relay terminal changes, the first AMF node can notify the AMF node of the remote terminal, so that the AMF node of the remote terminal can obtain the AMF node currently corresponding to the relay terminal in time, which can improve the performance of the remote terminal. The efficiency with which the terminal's AMF node pages the far-end terminal.

In a second aspect, a paging method is provided, and the method can be executed by a second mobility management function node or a module (such as a chip) configured in (or used for) the second mobility management function node. The execution of two AMF nodes is taken as an example to illustrate.

The method includes: acquiring an identifier of a first AMF node by a second AMF node, wherein the first AMF node is a mobility management function node of the first terminal, and the second AMF node is a mobility management function node of the second terminal, The first terminal provides a relay service for the second terminal; the second AMF node sends a second message to the first AMF node according to the identifier of the first AMF node, where the second message is used to request the first AMF The node pages the second terminal through the first terminal.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second AMF node receiving a third message from the first AMF node, where the third message is used to indicate the first AMF node rejecting the request of the second AMF node to page the second terminal, or the third message includes first time information, where the first time information is used to instruct the first AMF node to send the first message to the first terminal time, or the first time information is used to indicate the time when the first terminal enters the idle state and is reachable or the time when the first terminal enters the connected state.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second AMF node sends an eighth message to the second radio access network RAN node according to the third message, the eighth message using For paging the second terminal, the second RAN node is located in the tracking area of the second terminal.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second AMF node receives a fifth message from the first AMF node, where the fifth message is used to notify the first terminal of the The second AMF node sends the second message to the first AMF node, including: the second AMF node sends the second message to the first AMF node according to the state of the first terminal.

With reference to the second aspect, in some implementations of the second aspect, the second AMF node sends the second message to the first AMF node according to the state of the first terminal, including: at the first terminal In a connected state, or in an idle state and reachable, the second AMF node sends the second message to the first AMF node.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second AMF node receiving a seventh message from the first AMF node or the third AMF node, where the seventh message is used to indicate The AMF node of the first terminal is changed to the third AMF node; the second AMF node updates the context information of the second terminal according to the seventh message.

In a third aspect, a paging method is provided. The method can be executed by a first mobility management function node or a module (such as a chip) configured in (or used for) a second mobility management function node. The execution of two AMF nodes is taken as an example to illustrate.

The method includes: a second AMF node obtains an identifier of a RAN node of a first terminal, wherein the second AMF node is a mobility management function node of a second terminal, and the first terminal provides a relay service for the second terminal; the The second AMF node sends a first message to the RAN node according to the identity of the RAN node, where the first message is used by the RAN node to page the second terminal through the first terminal.

According to the above solution, the AMF node (ie the second AMF node) of the remote terminal (ie the second terminal) notifies the RAN node where the relay terminal (ie the first terminal) resides to page the second terminal through the first terminal. It can realize network paging of remote devices in relay communication, improve the success probability of network paging remote terminals, and prevent the network from sending paging messages to multiple RANs in the tracking area, reducing the information caused by paging. This reduces overhead and improves resource utilization.

Optionally, the first message is a radio resource control RRC message.

With reference to the third aspect, in some implementations of the third aspect, the second AMF node acquiring the identifier of the RAN node of the first terminal includes: the second AMF node receiving a second message from the first AMF node, the The second message includes the identity of the RAN node, where the first AMF node is the mobility management function node of the first terminal.

According to the above solution, the AMF node of the remote terminal can obtain the identity of the RAN node of the relay terminal through the second message from the AMF node of the relay terminal, so that the AMF node of the remote terminal can notify the RAN node of the relay terminal to pass the middle The relay terminal pages the remote terminal, so as to realize the paging of the remote terminal in the relay communication, and provide the success probability of the network paging the remote terminal.

With reference to the third aspect, in some implementations of the third aspect, the method further includes: the second AMF node sends a third message to the first AMF node, where the third message is used to request the RAN of the first terminal Node information.

According to the above solution, the AMF node of the remote terminal can request the AMF node of the relay terminal for information of the RAN node of the relay terminal through the third message, so that the AMF node of the remote terminal can notify the RAN node of the relay terminal to pass the relay The terminal pages the remote terminal to realize the paging of the remote terminal in the relay communication and provide the success probability of the network paging the remote terminal.

With reference to the third aspect, in some implementations of the third aspect, the second message further includes an identifier of a first interface, where the first interface is used to transmit the first terminal between the RAN node and the first AMF node The data.

With reference to the third aspect, in some implementations of the third aspect, the first message includes an identifier of the second terminal, or the first message includes an identifier of the first terminal and an identifier of the second terminal.

According to the above solution, the first message includes the identifier of the second terminal, so that the RAN node of the relay terminal can determine the terminal equipment that the network needs to page through the identifier of the second terminal. Optionally, the first message may also include the middle The identifier of the relay terminal is used, so that the RAN node of the relay terminal can determine to page the remote terminal through the relay terminal corresponding to the identifier.

A fourth aspect provides a paging method, which can be executed by a RAN node or a module (eg, a chip) configured in (or used for) the RAN node.

The method includes: a RAN node receiving a first message from a second AMF node, the first message being used by the RAN node to page a second terminal through a first terminal, the second AMF node being a mobility management function of the second terminal node, the first terminal provides relay service for the second terminal; when the first terminal is in a connected state, the RAN node sends a fourth message to the first terminal according to the first message, the fourth The message includes first information for paging the second terminal.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first message includes the identifier of the second terminal, or the first message includes the identifier of the first terminal and the identifier of the second terminal.

With reference to the fourth aspect, in some implementations of the fourth aspect, the fourth message is a radio resource control RRC message.

A fifth aspect provides a paging method, which can be executed by a first terminal or a module (such as a chip) configured in (or used for) the first terminal. The following is performed by taking the method being executed by the first terminal as an example. instruction.

The method includes: a first terminal receives first information, the first information is used for paging a second terminal, the first terminal provides a relay service for the second terminal; the first terminal sends a message to the second terminal according to the first information The second terminal sends a ninth message, where the ninth message is used to request the second terminal to establish a connection with the network.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first information comes from the first AMF node or the first radio access network RAN node, where the first AMF node is the mobility management of the first terminal A functional node, where the first RAN node is the RAN node of the first terminal.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the fifth message includes the first information, or the fifth message includes second information, and the second information is used to indicate that the second terminal has to be received downlink data.

With reference to the fifth aspect, in some implementations of the fifth aspect, the method further includes: the first terminal sends a sixth message to the first AMF node, where the sixth message includes an identifier of the second terminal.

A sixth aspect provides a paging method, which can be executed by a first mobility management function node or a module (such as a chip) configured in (or used for) the first mobility management function node. The execution of an AMF node is described as an example.

The method includes: a first AMF node obtains an identifier of a RAN node of a first terminal, where the first AMF node is a mobility management function node of the first terminal; the first AMF node sends a second message to the second AMF node, the The second message includes the identity of the RAN node, where the second AMF node is a mobility management function node of the second terminal, and the first terminal provides relay services for the second terminal.

With reference to the sixth aspect, in some implementations of the sixth aspect, the second message further includes an identifier of a first interface, and the first interface is used for transmitting the first terminal between the RAN node and the first AMF node The data.

With reference to the sixth aspect, in some implementation manners of the sixth aspect, the method further includes: the first AMF node receiving a third message from the second AMF node, where the third message is used to request the first terminal's RAN node information.

With reference to the sixth aspect, in some implementations of the sixth aspect, the method further includes: the first AMF node receives a sixth message from the first terminal, where the sixth message includes an identifier of the second terminal; the The first AMF node acquires the identifier of the second AMF node according to the identifier of the second terminal.

In a seventh aspect, a communication device is provided, the device is configured on a first AMF node, the device includes: a transceiver unit configured to receive a second message from a second AMF node, where the second message is used to request the first AMF node The AMF node pages the second terminal through the first terminal, where the first AMF node is the mobility management function node of the first terminal, and the first terminal provides relay services for the second terminal; the processing unit determines the first terminal The state of a terminal is a connected state; the transceiver unit is further configured to send a first message to the first terminal when the state of the first terminal is a connected state, where the first message includes first information, and the first information For paging the second terminal, the first message is a non-access stratum NAS message.

With reference to the seventh aspect, in some implementations of the seventh aspect, the transceiver unit is further configured to send a third message to the second AMF node when the first terminal is in an idle state and is unreachable, the third The message is used to instruct the first AMF node to reject the request of the second AMF node to page the second terminal, or the third message includes first time information, and the first time information is used to instruct the first AMF node to The time when the first terminal sends the first message, or the first time information is used to indicate the time when the first terminal enters the idle state and is reachable or the time when the first terminal enters the connected state.

With reference to the seventh aspect, in some implementations of the seventh aspect, the transceiver unit is further configured to send a fourth message to the first radio access network RAN node when the first terminal is in an idle state and is reachable , the fourth message is used to page the first terminal, the fourth message includes first information, the first information is used to page the second terminal, the first RAN node is located in the tracking area of the first terminal .

With reference to the seventh aspect, in some implementations of the seventh aspect, the transceiver unit is further configured to send a fifth message to the second AMF node, where the fifth message is used to notify the state of the first terminal.

With reference to the seventh aspect, in some implementations of the seventh aspect, the transceiver unit is further configured to receive a sixth message from the first terminal, where the sixth message includes the identifier of the second terminal; the processing unit is further configured to use for obtaining the identity of the second AMF node according to the identity of the second terminal.

With reference to the seventh aspect, in some implementations of the seventh aspect, the transceiver unit is further configured to send a seventh message to the second AMF node, where the seventh message is used to instruct the AMF node of the first terminal to change to the first terminal Three AMF nodes.

In an eighth aspect, a communication device is provided, the communication device is configured on a second AMF node, the communication device includes: a processing unit configured to acquire an identifier of a first AMF node, wherein the first AMF node is the first AMF node a mobility management function node of a terminal, the second AMF node is a mobility management function node of the second terminal, and the first terminal provides a relay service for the second terminal; a transceiver unit is used to identify the first AMF node according to the , sending a second message to the first AMF node, where the second message is used to request the first AMF node to page the second terminal through the first terminal.

With reference to the eighth aspect, in some implementations of the eighth aspect, the transceiver unit is further configured to receive a third message from the first AMF node, where the third message is used to instruct the first AMF node to reject the second AMF node A request from the AMF node to page the second terminal, or the third message includes first time information, where the first time information is used to indicate the time when the first AMF node sends the first message to the first terminal, or The first time information is used to indicate the time when the first terminal enters the idle state and is reachable or the time when the first terminal enters the connected state.

With reference to the eighth aspect, in some implementations of the eighth aspect, the transceiver unit is further configured to send an eighth message to the second radio access network RAN node according to the third message, where the eighth message is used to page the A second terminal, the second RAN node is located in the tracking area of the second terminal.

With reference to the eighth aspect, in some implementations of the eighth aspect, the transceiver unit is specifically configured to send the second message to the first AMF node according to the state of the first terminal.

With reference to the eighth aspect, in some implementations of the eighth aspect, the transceiver unit is specifically configured to send the first terminal to the first AMF node when the first terminal is in a connected state, or is in an idle state and is reachable Two news.

With reference to the eighth aspect, in some implementations of the eighth aspect, the transceiver unit is further configured to receive a seventh message from the first AMF node or the third AMF node, where the seventh message is used to indicate the first terminal The AMF node of the first terminal is changed to the third AMF node; the processing unit is further configured to update the context information of the second terminal according to the seventh message.

In a ninth aspect, a communication device is provided, the communication device is configured on a second AMF node, the communication device includes: a processing unit configured to acquire an identifier of a RAN node of a first terminal, wherein the second AMF node is the first terminal The mobility management function node of the two terminals, the first terminal provides relay services for the second terminal; the transceiver unit is used to send a first message to the RAN node according to the identifier of the RAN node, and the first message is used for the RAN node. The RAN node pages the second terminal through the first terminal.

With reference to the ninth aspect, in some implementations of the ninth aspect, the transceiver unit is specifically configured to receive a second message from the first AMF node, where the second message includes an identifier of the RAN node, wherein the first AMF node is the mobility management function node of the first terminal.

With reference to the ninth aspect, in some implementations of the ninth aspect, the processing unit is further configured to send a third message to the first AMF node, where the third message is used to request information of the RAN node of the first terminal.

With reference to the ninth aspect, in some implementations of the ninth aspect, the second message further includes an identifier of a first interface, and the first interface is used for transmitting the first terminal between the RAN node and the first AMF node The data.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the first message includes an identifier of the second terminal, or the first message includes an identifier of the first terminal and an identifier of the second terminal.

In a tenth aspect, a communication device is provided, the communication device is configured on a RAN node, the communication device includes: a transceiver unit, configured to receive a first message from a second AMF node, where the first message is used by the RAN node to pass The first terminal pages the second terminal, the second AMF node is the mobility management function node of the second terminal, and the first terminal provides relay services for the second terminal; the processing unit determines that the first terminal is in a connected state ; The transceiver unit is also configured to send a fourth message to the first terminal according to the first message when the first terminal is in a connected state, the fourth message includes the first information, and the first information is used to find the first message. call the second terminal.

With reference to the tenth aspect, in some implementation manners of the tenth aspect, the first message includes an identifier of the second terminal, or the first message includes an identifier of the first terminal and an identifier of the second terminal.

With reference to the tenth aspect, in some implementations of the tenth aspect, the fourth message is a radio resource control RRC message.

In an eleventh aspect, a communication device is provided, the communication device is configured on a first terminal, the communication device includes: a transceiver unit for receiving first information, the first information is used for paging a second terminal, the first information A terminal provides a relay service for the second terminal; the processing unit is configured to determine to send a ninth message to the second terminal, where the ninth message is used to request the second terminal to establish a connection with the network, and the transceiver unit is further configured to send a ninth message to the second terminal according to the the first information, and send the ninth message to the second terminal.

With reference to the eleventh aspect, in some implementations of the eleventh aspect, the first information comes from a first AMF node or a first radio access network RAN node, where the first AMF node is a A mobility management function node, where the first RAN node is the RAN node of the first terminal.

With reference to the eleventh aspect, in some implementation manners of the eleventh aspect, the fifth message includes the first information, or the fifth message includes second information, and the second information is used to indicate that the second terminal exists Downlink data to be received.

With reference to the eleventh aspect, in some implementations of the eleventh aspect, the transceiver unit is further configured to send a sixth message to the first AMF node, where the sixth message includes the identifier of the second terminal.

A twelfth aspect provides a communication device, the communication device is configured on a first AMF node, the communication device includes: a processing unit configured to acquire an identifier of a RAN node of a first terminal, where the first AMF node is the first AMF node A mobility management function node of a terminal; a transceiver power supply for sending a second message to a second AMF node, where the second message includes an identifier of the RAN node, wherein the second AMF node is a mobility management function node of the second terminal , the first terminal provides a relay service for the second terminal.

With reference to the twelfth aspect, in some implementations of the twelfth aspect, the second message further includes an identifier of a first interface, and the first interface is used for transmitting the first interface between the RAN node and the first AMF node. data of a terminal.

With reference to the twelfth aspect, in some implementations of the twelfth aspect, the transceiver unit is further configured to receive a third message from the second AMF node, where the third message is used to request the RAN node of the first terminal Information.

With reference to the twelfth aspect, in some implementations of the twelfth aspect, the transceiver unit is further configured to receive a sixth message from the first terminal, where the sixth message includes an identifier of the second terminal; the first The AMF node acquires the identity of the second AMF node according to the identity of the second terminal.

In a thirteenth aspect, a communication apparatus is provided, including a processor. The processor is coupled to the memory and can be used to execute instructions in the memory, so as to implement the method of the first aspect to the sixth aspect and any one of the possible implementations of the first aspect to the sixth aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

A fourteenth aspect provides a processor, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method of the first aspect to the sixth aspect and any one of the possible implementations of the first aspect to the sixth aspect .

In the specific implementation process, the above-mentioned processor may be one or more chips, the input circuit may be input pins, the output circuit may be output pins, and the processing circuit may be transistors, gate circuits, flip-flops and various logic circuits, etc. . The input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver, the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter, and the input circuit and output The circuit can be the same circuit that acts as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.

A fifteenth aspect provides a processing apparatus including a processor and a memory. The processor is configured to read the instructions stored in the memory, and can receive signals through the receiver and transmit signals through the transmitter, so as to execute the first aspect to the sixth aspect and any possible implementation manner of the first aspect to the sixth aspect method in .

Optionally, the processor is one or more, and the memory is one or more.

Alternatively, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

In the specific implementation process, the memory can be a non-transitory memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be separately set in different On the chip, the embodiment of the present application does not limit the type of the memory and the setting manner of the memory and the processor.

It should be understood that the relevant data interaction process, such as sending indication information, may be a process of outputting indication information from the processor, and receiving capability information may be a process of receiving input capability information by the processor. Specifically, the data output by the processor can be output to the transmitter, and the input data received by the processor can be from the receiver. Among them, the transmitter and the receiver may be collectively referred to as a transceiver.

The processing device in the fifteenth aspect above may be one or more chips. The processor in the processing device may be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general-purpose processor, implemented by reading software codes stored in a memory, which can Integrated in the processor, can be located outside the processor, independent existence.

A sixteenth aspect provides a computer program product, the computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes the computer to execute the above-mentioned first to sixth aspects Aspects and methods of any possible implementations of the first to sixth aspects.

In a seventeenth aspect, a computer-readable medium is provided, the computer-readable medium stores a computer program (also referred to as code, or instruction) when it is run on a computer, causing the computer to execute the above-mentioned first to sixth aspects. The method in the sixth aspect and any possible implementation manner of the first aspect to the sixth aspect.

In an eighteenth aspect, a communication system is provided, including the aforementioned first AMF node, the second AMF node, the first terminal, and the second terminal, or, including the aforementioned first AMF node, RAN node, first terminal, and second terminal.

Description of drawings

Figure 1 is a schematic diagram of a system architecture.

FIG. 2 is a schematic flowchart of an example of a paging method provided by an embodiment of the present application.

FIG. 3 is a schematic flowchart of another example of a paging method provided by an embodiment of the present application.

FIG. 4 is a schematic flowchart of another example of a paging method provided by an embodiment of the present application.

FIG. 5 is a schematic flowchart of another example of a paging method provided by an embodiment of the present application.

FIG. 6 is a schematic block diagram of an example of the communication device of the present application.

FIG. 7 is a schematic configuration diagram of an example of a terminal device of the present application.

FIG. 8 is a schematic structural diagram of an example of an access network device of the present application.

FIG. 9 is a schematic configuration diagram of an example of a communication device of the present application.

detailed description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system for mobile communications (GSM), code division multiple access (CDMA) system, wideband code division Multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) ) system, LTE time division duplex (TDD), universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5th generation, 5G) system or new radio (new radio, NR), etc.

A terminal in this embodiment of the present application may refer to a UE, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal device, a wireless communication device, a user agent, or a user device. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication A functional handheld device, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in a 5G network or terminal in the future evolution of the public land mobile network (PLMN) equipment, etc., which are not limited in this embodiment of the present application.

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

In addition, in the embodiments of the present application, the terminal device may also be a terminal device in an Internet of Things (IoT) system. IoT is an important part of the future development of information technology, and its main technical feature is that items pass through communication technology Connect with the network, so as to realize the intelligent network of human-machine interconnection and interconnection of things.

The network device in this embodiment of the present application may be a device used to communicate with a terminal device, and the network device may be a base station (base transceiver station, BTS) in a GSM or CDMA system, or a base station (nodeB, BTS) in a WCDMA system NB), it can also be an evolved base station (evolutional nodeB, eNB or eNodeB) in the LTE system, it can also be a wireless controller in the cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can It is a relay station, an access point, a vehicle-mounted device, and a network device in a 5G network or a network device in a future evolved PLMN network, etc., which are not limited in the embodiments of the present application.

In this embodiment of the present application, the PC5 interface may be a reference point between two UEs, and may be used to complete signaling and data transmission, proximity service discovery, direct communication, etc. on the control plane and the user plane. The PC5 interface may be used for short-range direct communication or direct connection communication between UEs, which may be referred to as PC5 communication or PC5 interface communication for short. The UE communicating through the PC5 interface may be located within the network coverage or may be located outside the network coverage, and the network may be a 4G network or a 5G network, which is not specifically limited in this embodiment of the present application.

In this embodiment of the present application, the Uu interface may be an interface between a UE and an access network device. Wherein, the access network equipment may be a base station in UMTS, an evolved base station (evolutional node B, eNodeB or eNB) in a 4G network, a next generation base station (next generation node base station, gNodeB or gNB) in a 5G network, or the base station in the subsequent evolution network, without limitation. When two or more UEs communicate through an access network device, the communication may be referred to as Uu communication or Uu interface communication for short.

Figure 1 is a schematic diagram of a system architecture. As shown in Figure 1, the system framework may include the following network elements:

1. A terminal, such as UE1-UE4 in FIG. 1 .

2. Radio access network (RAN) node: A module, device or device that implements access network functions based on wireless communication technology can be called a RAN node. The RAN node is mainly used to provide UE wireless access to the mobile network. The interface can manage radio resources, provide access services for the UE, and then complete the forwarding of control signals and user data between the UE and the core network. For example, the RAN node can be a base station. The radio access network used in the 5G system is the next generation radio access network (NG-RAN), and the RAN node in the 5G system is the gNB.

3. Access and mobility management function (AMF): mainly used for mobility management and access management. Specifically, AMF can be used to implement other functions other than session management among the functions of a mobility management entity (mobility management entity, MME), for example, functions such as legal interception, or access authorization (or authentication), which can achieve The AMF module, apparatus or device, etc. may be referred to as an AMF node.

4. Session management function (SMF): mainly used for session management, UE's internet protocol (IP) address allocation and management, selection of manageable user plane functions, policy control, or charging function interfaces The termination point and downlink data notification, configuration of routing information for user plane functions, etc., the modules, devices or devices that can implement the SMF can be called SMF nodes.

5. Policy control function (PCF): a unified policy framework for guiding network behavior, providing policy rule information for control plane functional network elements (such as AMF, SMF network elements, etc.), and capable of implementing the PCF module , apparatus or equipment, etc. may be referred to as PCF nodes.

6. Unified data management (UDM): used to handle user identification, access authentication, registration, or mobility management.

7. User plane function (UPF): used for packet routing and forwarding, or quality of service (QoS) processing of user plane data. UPF is specifically divided into intermediate-UPF (intermediate-UPF, I-UPF) and anchor UPF (anchor-UPF, A-UPF). Among them, the I-UPF is connected to the RAN, the A-UPF is the UPF of the session anchor, and the A-UPF can also be called the PDU session anchor (PSA), and the modules, devices or devices that can realize the UPF can be Called a UPF node.

8. Application function (AF): mainly supports interaction with the 3rd generation partnership project (3GPP) core network to provide services, for example, affecting data routing decisions, policy control functions, or providing services to the network side Provide some services of third parties. It can be understood as a third-party server, such as an application server in the Internet, that provides relevant service information, including providing service quality requirement information corresponding to the service to the PCF, and sending user plane data information of the service to the PSA-UPF. The AF can also be a content provider (CP). For example, ProSe application server is a kind of AF.

9. Network exposure function (NEF), which connects core network elements and external application servers, and provides services such as authentication and data forwarding when external application servers initiate service requests to the core network.

10. Data network (DN): A network used to provide data transmission, such as the Internet network.

11. Unified data repository (UDR): It is used to provide storage and retrieval for PCF policies, storage and retrieval of open structured data, and user information storage for application function requests.

Among them, the UE (eg, UE1, UE4) accesses the 5G network through the wireless air interface and obtains services, the UE interacts with the RAN node through the air interface, and interacts with the AMF node through a non-access stratum (non-access stratum, NAS) message. The UPF node is responsible for the forwarding and reception of user data in the terminal. The transmission resources and scheduling functions of the UPF node serving the terminal are managed and controlled by the SMF node. The AMF node is mainly responsible for the signaling processing part, such as: access control, mobility management, attach and detach, and gateway selection, etc., and the AMF node can also provide services for the session of the terminal. Storage resources of the control plane to store the session ID, the SMF network element ID associated with the session ID, and the like. The SMF node is responsible for user plane node selection, user plane node redirection, Internet Protocol (IP) address allocation, bearer establishment, modification and release, and quality of service (QoS) control. When the remote terminal (eg, UE2 in FIG. 1 ) is outside the coverage of the network or the signal quality with the RAN node is not good (eg, lower than a preset threshold), the remote terminal can perform the communication through the relay terminal. Assistance, for example, in FIG. 1, UE2 can be assisted by UE1, and the communication between the remote terminal and the relay terminal and the communication between the relay terminal and the RAN node are used to realize the communication between the remote terminal and the RAN node. .

The remote terminal communicates indirectly through the relay mode. The relay terminal forwards the uplink and downlink data of the remote terminal according to the configuration of the access stratum (AS). The remote terminal accesses the RAN through the relay terminal and the remote terminal The terminal will register in the network and establish a PDU session. Therefore, when the remote terminal is in an idle state and its data arrives, how the network device implements the remote terminal in paging relay communication has become a problem to be solved by those skilled in the art .

In the traditional communication mode (ie non-relay communication mode), after the terminal enters the idle state, in order to save the terminal energy, the terminal monitors the paging message within the specified paging time, and the terminal can determine its needs according to the paging parameters configured by the network. Paging time to monitor paging messages. The paging parameters configured by the network may include discontinuous reception (discontinuous reception, DRX) and temporary mobile subscriber identifier (temporary mobile subscription identifier, TMSI) and the like. When the terminal needs to be paged, the AMF node of the terminal sends a paging message to the RAN node in the tracking area (TA) of the terminal, and the RAN node in the tracking area sends the paging message at the paging time of the terminal. A paging message for a terminal to page the terminal. The tracking area refers to the location area of the terminal when the terminal is in an idle state stored by the AMF node.

In the relay communication mode, when the remote terminal enters the idle state, the network device can page in the following ways:

Manner 1, the remote terminal monitors the paging message within the paging time according to the paging parameters configured by the network, and the network device sends the paging message within the paging time of the remote terminal.

In a second manner, the relay terminal acquires the paging parameters of the remote terminal from the remote terminal and/or the network device, and determines the paging time of the remote terminal. The relay terminal monitors the paging message of the remote terminal during the paging time of the remote terminal, and forwards the paging message to the remote terminal when it acquires the paging message of the remote terminal during the paging time of the remote terminal. remote terminal.

Mode 3: The AMF node of the remote terminal obtains the paging parameters of the relay terminal. When the remote terminal needs to be paged, the AMF node of the remote terminal sends the RAN node of the tracking area of the relay terminal to the RAN node of the relay terminal. Paging message, the paging message for paging the relay terminal includes information for paging the remote terminal, and the RAN node in the tracking area of the relay terminal receives the paging message at the paging time of the relay terminal Send a paging message for the relay terminal. After receiving the paging message within its paging time, the relay terminal forwards the information for paging the remote terminal to the remote terminal if the paging message includes the information for paging the remote terminal .

In the above method 1, the remote terminal may be outside the coverage of the RAN node, and may fail to receive the paging message due to the fact that the remote terminal cannot receive the paging message. In the above-mentioned

ways

2 and 3, on the one hand, the relay terminal equipment needs to monitor the paging message even if it is in the connected state, on the other hand, the remote AMF node needs to send messages to multiple RAN nodes (RAN nodes in the remote terminal tracking area, or the RAN node in the tracking area of the relay terminal) to send the information for paging the remote terminal, the signaling overhead is relatively high, and the communication resource occupancy rate is relatively high.

The embodiment of the present application provides a method for paging a remote terminal, which can improve the success probability of the network paging the remote terminal and reduce the signaling overhead caused by paging the remote terminal.

The embodiments of the present application will be described below with reference to the accompanying drawings.

FIG. 2 is a schematic flowchart of a paging method provided by an embodiment of the present application.

In the embodiment shown in FIG. 2 , the first terminal establishes direct communication with the second terminal, and the first terminal can provide a relay service for the second terminal. That is, the first terminal can serve as a relay terminal to provide a relay service for the second terminal, which is a remote terminal. The second terminal registers with the network and establishes a PDU session. The data of the second terminal can be transmitted to the first terminal through the PC5 interface, and the first terminal transmits the data of the remote terminal through the Uu interface between the first terminal and the RAN node. sent to the network. When the second terminal is in an idle state, the network paging the second terminal may be implemented through the following steps. Wherein, the mobility management function node in FIG. 2 is described by taking an AMF node (eg, a first AMF node and a second AMF node) as an example, but the present application is not limited to this.

S210, the second AMF node acquires the identifier of the first AMF node.

Wherein, the identifier of the first AMF node may be used to identify the first AMF node, and may specifically be the name and address of the first AMF node, or a globally unique AMF identifier (globally unique AMF identify, GUAMI) and the like.

The second AMF node is a node that provides mobility management function services for the second terminal, and the first AMF node is a node that provides mobility management function services to the first terminal. In this application, the first AMF node may be referred to as an AMF node corresponding to the first terminal or an AMF node of the first terminal, and the second AMF node may be referred to as an AMF node corresponding to the second terminal or an AMF node of the second terminal.

In an optional implementation manner, the second AMF node acquires the identifier of the first AMF node from the second terminal.

For example, the second AMF node receives a NAS message from the second terminal, where the NAS message includes an identifier of the first terminal, indicating that the first terminal corresponding to the identifier provides a relay service for the second terminal. The NAS message may be a NAS message sent by the second terminal during registration, but the present application is not limited thereto. The identifier of the first terminal may be acquired by the second terminal from the first terminal through the PC5 interface. The identity of the first terminal may be a globally unique temporary identity (globally unique temporary identity, GUTI) of the first terminal. The second AMF node determines the GUAMI of the AMF node (ie, the first AMF node) of the first terminal according to the GUTI of the first terminal, and the GUAMI of the first AMF node is a part of the GUTI of the first terminal, but the present application is not limited to this.

In another optional implementation manner, the second AMF node acquires the identifier of the first AMF node from the first AMF node.

For example, the first AMF node receives a NAS message (that is, an example of the sixth message) from the first terminal, where the NAS message includes the identifier of the second terminal, indicating that the first terminal provides the middle terminal for the second terminal corresponding to the identifier continue service. The identifier of the second terminal may be acquired by the first terminal from the second terminal through the PC5 interface. The identifier of the second terminal may be the GUTI of the second terminal, and the first AMF node may determine the GUAMI of the second AMF node according to the GUTI of the second terminal, and send a message A to the second AMF node, where the message A is used to notify The first terminal served by the first AMF node of the second AMF node provides a relay service for the second terminal. Correspondingly, after receiving the message A from the first AMF node, the second AMF node can determine the identity of the first AMF node corresponding to the first terminal. Optionally, the message A includes the identifier of the first terminal and the identifier of the second terminal. Correspondingly, after receiving the message A, the second AMF node may determine that the first terminal provides a relay service for the second terminal. Further optionally, the message A also includes the identifier of the first AMF node, but the present application is not limited to this.

Optionally, after acquiring the identifier of the first AMF node, the second AMF node may store the identifier of the first AMF node in the context of the second terminal. Alternatively, the second AMF node may store the acquired GUTI of the first terminal in the context of the second terminal, and acquire the GUAMI of the first AMF node according to the GUTI of the first terminal in the context of the second terminal.

S220, the second AMF node sends a second message to the first AMF node.

The second message may be used to request or notify or trigger the first AMF node to page the second terminal through the first terminal.

Accordingly, the first AMF node receives the second message from the second AMF node.

Optionally, the second message may be a UE context transfer (UE Context Transfer) message.

Optionally, when there is downlink NAS signaling of the second terminal or downlink data of the second terminal to be transmitted, the second AMF node may send the second message to the first AMF node.

For example, the second AMF node may receive a message B from the second SMF node, where the message B is used to notify the second AMF node that there is downlink NAS signaling or downlink data of the second terminal to be transmitted. Optionally, the message B can be an N1N2 message transfer (N1N2 message transfer) message, and the message B includes a user permanent identifier (subscription permanent identifier, SUPI) of the second terminal, and the SUPI can be an international mobile subscriber identity code (international mobile user identity code). subscriber identity, IMSI), but this application is not limited to this. When the second AMF node determines according to the message B that there is downlink data of the second terminal being transmitted and the second terminal is in an idle state, the second AMF node sends the second message to the first AMF node to request the first AMF node to pass the The first terminal pages the second terminal, so that the second terminal activates the PDU session corresponding to the downlink data. Optionally, the second AMF node determines, according to the first PDU session identifier included in the message B, that there is downlink data of the second terminal being transmitted, and the first PDU session is used to transmit data of the second terminal. When the second AMF node determines according to the message B that there is downlink NAS signaling of the second terminal being transmitted and the second terminal is in an idle state, the second AMF node sends the second message to the first AMF node to request the first AMF The node pages the second terminal through the first terminal, so that the second terminal establishes a NAS connection. Optionally, the second AMF node may determine that there is downlink NAS signaling of the second terminal to be transmitted by including the first PDU session identifier in the middle of the message B, but the present application is not limited to this.

Optionally, the second message includes the identity of the first terminal and the identity of the second terminal.

In an optional implementation manner, the location of the identifier of the first terminal and the identifier of the second terminal in the second message is used to indicate that the second terminal is paged through the first terminal, for example, in the second message, the first terminal The identifier of the first terminal is followed by the identifier of the second terminal, indicating that the second AMF node notifies the first AMF node to page the second terminal through the first terminal, but the present application is not limited to this.

In another optional implementation manner, after receiving the second message, the first AMF node determines, according to the identifier of the first terminal, the terminal that the first terminal provides services for the first AMF node, and the first terminal provides the second terminal with Relay service, it is determined that the second AMF node notifies the first AMF node to page the second terminal through the first terminal, but the present application is not limited to this.

As an example and not limitation, the identifier of the first terminal in the second message may be the GUTI of the first terminal, and/or the identifier of the second terminal in the second message may be the temporary mobile subscriber identifier TMSI of the second terminal.

Optionally, before the second AMF node performs S220, the second AMF node may send a paging message (that is, an eighth message) of the second terminal to the second RAN node, and the second RAN node is used to page the second terminal, the first The second RAN node is a RAN node located in the tracking area of the second terminal. In the case that the second AMF node does not receive a response message (eg, a service request message or a registration request message) from the second terminal, the second AMF node performs S220.

Optionally, before the second AMF node performs S220, the paging method may further include the steps shown in FIG. 3 .

S211, the first AMF node acquires the state of the first terminal.

The state in which the first terminal is located may be a connected state, an idle state and reachable, or an idle state and unreachable.

Wherein, when the NAS signaling connection between the first terminal and the first AMF node exists, the first terminal is in a connected state. When the NAS signaling connection between the first terminal and the first AMF node does not exist, the first terminal is in an idle state.

Wherein, when the first terminal is in an idle state but can receive downlink paging messages, the first terminal is in an idle state and is reachable.

For example, when the first terminal is in an idle state and is in a wake up state (wake up mode) of discontinuous reception (DRX) or a wake up state of enhanced discontinuous reception (extended DRX, eDRX), the first terminal is in Idle and reachable. DRX means that in order to save energy when the terminal is in an idle state, the terminal will periodically enter a sleep mode (sleep mode). In the sleep state, the terminal is in a low power consumption mode and does not receive downlink paging messages. After the sleep state ends, the terminal enters the sleep mode. The awake state can receive downlink paging messages, but the present application is not limited to this.

Wherein, when the first terminal is in an idle state but does not receive downlink paging messages, the first terminal is in an idle state and cannot be reached.

For example, when the first terminal is in an idle state and is in a sleep state of DRX or eDRX, the first terminal is in an idle state and cannot be reached. Or when the first terminal is in a mobile-initiated connection only (MICO) mode, or when the first terminal is in a connection mode initiated by the first terminal, the first terminal is in an idle state and cannot be reached.

S212, the first AMF node sends a fifth message to the second AMF node.

Wherein, the fifth message may be used to notify the state of the first terminal.

Accordingly, the second AMF node receives the fifth message from the first AMF node.

Optionally, the fifth message may be a UE context transfer (UE Context Transfer) message.

Before executing S212, the first AMF node may acquire the identifier of the second AMF node, that is, before sending the fifth message, the first AMF node determines the AMF node corresponding to the second terminal for which the first terminal provides the relay service, Thus, the fifth message is sent to the second AMF node in S212. Optionally, the first AMF node may acquire the identifier of the second AMF node from the first terminal, or the first AMF node may acquire the identifier of the second AMF node from the second AMF node. The first AMF node acquiring the identifier of the second AMF node is similar to the implementation manner in which the second AMF node acquires the identifier of the first AMF node. The specific implementation may refer to the above description, which is not repeated here for brevity.

In an optional implementation manner, the first AMF node sends the fifth message to the second AMF node when the state of the first terminal changes, so as to notify the second AMF node of the changed state of the first terminal .

For example, after the state of the first terminal changes from an idle state to a connected state, the first AMF node sends the fifth message to the second AMF node, where the fifth message is used to notify the second AMF node that the state of the first terminal is updated as Connection Status.

In another optional implementation manner, the first AMF node periodically sends a fifth message to the second AMF node to notify the state of the first terminal.

S213, the second AMF node determines the state of the first terminal according to the fifth message.

Exemplarily, the second AMF node determines the state of the first terminal according to the fifth message. When the first terminal is in a connected state, or is in an idle state and is reachable, the second AMF node may perform the steps in the embodiment of FIG. 2 . S220; or, in the case that the first terminal is in an idle state and is unreachable, the second AMF node may not perform S220 in the embodiment of FIG. 2, and the second AMF node may send the second RAN node to the second RAN node. A paging message (ie, an eighth message) to page the second terminal through a second RAN node located in a tracking area of the second terminal, which may include one or more second RAN nodes.

Corresponding to S220 in the embodiment shown in FIG. 2 , the first AMF node receives the second message, and further, for different states of the first terminal, the above method may further include different steps. For example, the first AMF node determines the state of the first terminal according to the second message, and performs different actions according to the state of the first terminal. The following three cases are used as examples for illustration, which are not limited in this application.

Case 1, when the first terminal is in a connected state, the method includes steps S230, S240 and S250.

S230, the first AMF node sends the first message to the first terminal according to the second message.

Wherein, the first message may include first information, and the first information is used for paging the second terminal, and the first message may be a NAS message, for example, a NAS notification message (NAS notification message).

Accordingly, the first terminal receives the first message from the first AMF node.

Exemplarily, when the first terminal is in a connected state, it can exchange information with the first AMF node through a NAS message. Therefore, the first message can be a NAS message. Correspondingly, the first AMF node can notify the first terminal through a NAS message. The terminal network pages the second terminal so that the first terminal informs the second terminal network to page the second terminal.

Optionally, the first information may include identification information of the second terminal, and the identification of the second terminal may be the S-TMSI or GUTI of the second terminal. Correspondingly, the first information is used to page the second terminal, so that the second terminal establishes a NAS signaling connection with the network. For example, the name of the first information may be paging information, and the identifier of the second terminal included in the first information indicates that the network is paging the second terminal.

For example, when the network has a NAS message to be transmitted to the second terminal, the second terminal may be paged, and specifically, the second terminal may be requested to establish a NAS signaling connection with the network through the first information, wherein the first The information can be sent by the second AMF node to the first AMF node, and then forwarded by the first AMF node to the second terminal through the first terminal, so that the second terminal can establish a NAS signaling connection with the network after acquiring the first information, but this The application is not limited to this.

Optionally, the first information may include identification information of the second terminal and identification information of a first PDU session, where the first PDU session is used to transmit data of the second terminal. Accordingly, the first information is used to page the second terminal, so that the second terminal activates the first PDU session. Activating the first PDU session may be understood as re-establishing the communication resource corresponding to the first PDU session. For example, the name of the first information may be paging information, the identifier of the second terminal included in the first information indicates that the network is paging the second terminal, and the first PDU session identification information included in the first information indicates that the network is paging the second terminal. The calling second terminal is specifically used to request the second terminal to activate the first PDU session.

For example, in the case that the second AMF node can learn that there is data to be transmitted to the second terminal through the above-mentioned message B from the second SMF node, the second terminal can be paged, and specifically, the second terminal can be requested through the first information. The terminal activates the PDU session to transmit the data of the second terminal, wherein the first information may be sent by the second AMF node to the first AMF node, and forwarded by the first AMF node to the second terminal through the first terminal, so that the first information can be sent to the second terminal through the first terminal. The two terminals activate the PDU session after acquiring the first information, but the present application is not limited to this.

S240, the first terminal sends a ninth message to the second terminal according to the first message.

Wherein, the ninth message may be used to request the second terminal to establish a connection with the network.

Accordingly, the second terminal receives the ninth message from the first terminal.

In S240, the first terminal sends the ninth message through the PC5 interface with the second terminal. The ninth message may be a PC5-S (PC5-Signalling) message or a PC5-RRC message, and may specifically be a downlink data notification message or a PC5 link modification message.

Optionally, the ninth message is used to request or trigger the second terminal to establish a NAS connection with the network or activate a PDU session.

Optionally, the first terminal sends a ninth message to the second terminal according to the first information in the first message, where the ninth message includes the above-mentioned first information.

Exemplarily, after receiving the first message from the first AMF node, the first terminal determines to forward the first information to the second terminal device according to the first information in the first message. The first information may include identification information of the second terminal, or the first information includes identification information of the second terminal and identification information of the first PDU session. Optionally, the first terminal may determine to forward the first information to the second terminal according to the identifier of the second terminal in the first message.

S250, the second terminal sends the tenth message to the second AMF node according to the ninth message.

Wherein, the tenth message may be used to respond to the paging of the network, and the tenth message is a service request message or a registration request message.

Accordingly, the second AMF node receives the tenth message.

Optionally, the second terminal determines, according to the ninth message, that the network paging the second terminal.

For example, the second terminal determines that the network is paging the second terminal according to the first information in the ninth message. The first information may include identification information of the second terminal, or the first information may include identification information of the second terminal and first PDU session identification information. Specifically, the second terminal receives the identification information of the second terminal from the ninth message, and the second terminal determines that the network pages the second terminal.

For example, the second terminal determines that the network paging the second terminal according to the ninth message type and the first information in the ninth message. The ninth message type may be a downlink data notification message or a PC5 link modification message. Specifically, the second terminal receives the ninth message, and the message includes identification information of the second terminal, and the second terminal determines that the network paging the second terminal.

Optionally, the second terminal relays and forwards the tenth message through the first terminal.

For example, the second terminal sends the tenth message to the first terminal through the PC5 interface with the first terminal, the first terminal forwards the tenth message to the RAN node of the first terminal through the Uu interface, and the first terminal forwards the tenth message to the RAN node of the first terminal through the Uu interface. The RAN node of a terminal transmits the tenth message to the second AMF node, but the present application is not limited thereto.

It should be noted that the RAN node of the terminal refers to the RAN node where the terminal establishes a wireless connection through the access process, or the RAN node where the terminal resides, or the RAN node where the terminal resides or connects in the connected state.

Optionally, the tenth message is a service request message or a registration request message.

For example, after the second terminal determines that the network is paging the second terminal according to the ninth message, it can send a service request message to the second AMF node to initiate a service request process, and then can respond to the paging of the network. The service request process can be used to change the state of the second terminal from an idle state to a connected state. When the ninth message received by the second terminal includes the identifier of the first PDU session, the service request message includes the identifier of the first PDU session, and the identifier of the first PDU session indicates that the service request process can be used for activation The first PDU session of the second terminal, but the present application is not limited thereto.

For another example, after the second terminal determines according to the ninth message that the network is paging the second terminal, the second terminal may initiate a registration process by sending a registration request to the second AMF node to respond to the paging of the network. The registration request is used for mobility and periodic registration information update, but this application is not limited thereto.

According to the above solution, when the first terminal (ie, the relay terminal) is in a connected state, the first AMF node can notify the first terminal through a NAS message to forward the information (ie, the first information) of the network paging the second terminal, so as to enable the Signaling overhead and resource consumption caused by sending paging messages to multiple RAN nodes in the tracking area are reduced.

In case 2, the first terminal is in an idle state and is reachable, and the above method further includes the steps in the embodiment of FIG. 4 .

S410, the first AMF node sends a fourth message to the first RAN node.

Wherein, the fourth message may be used for paging the first terminal, and the fourth message is a paging message. The fourth message includes the identifier of the first terminal.

The fourth message also includes first information for paging the second terminal.

Accordingly, the first RAN node receives the fourth message from the first AMF node. Wherein, the first RAN node is located in a tracking area of the first terminal, and the tracking area may include one or more first RAN nodes.

Exemplarily, after judging that the first terminal is in an idle state and reachable, the first AMF node pages the first terminal through the first RAN node, and includes a message for paging the second terminal in the fourth message of the first terminal. the first information, so that the first RAN node sends the first information to the second terminal through the first terminal.

S420, the first RAN node sends a paging message according to the fourth message.

Wherein, the paging message is used for paging the first terminal, and the paging message includes the first information.

Accordingly, the first terminal receives a paging message from the first RAN node.

Specifically, the first RAN node sends the paging message according to the identifier of the first terminal in the fourth message.

S430, the first terminal sends the first information to the second terminal according to the paging message.

Accordingly, the second terminal receives the first information from the first terminal. Specifically, after receiving the paging message from the first RAN node, the first terminal may forward the first information to the second terminal according to the paging message.

Optionally, the first terminal sends the first information to the second terminal through a PC5-S message or a PC5-RRC message. The PC5-S message may be a downlink data notification message or a PC5 link modification message.

For example, the paging message may include the identifier of the second terminal, and the first terminal determines to send the first information to the second terminal according to the identifier of the second terminal, but the present application is not limited to this.

S440, the second terminal sends the tenth message to the second AMF node according to the first information.

Accordingly, the second AMF node receives the tenth message from the second terminal.

For the specific implementation of S440, reference may be made to the description of S250 in the embodiment of FIG. 2 in Case 1, which is not repeated here for brevity.

In case three, the first terminal is in an idle state and is unreachable, and the first AMF node sends a third message to the second AMF node.

The third message may be used to respond to the second message, for example, a response message of the second message.

In an optional implementation manner, the third message is used to instruct the first AMF node to reject the request of the second AMF node to page the second terminal.

Optionally, the second AMF node sends to the second RAN a paging message (that is, an eighth message) for sending the second terminal to the second RAN node according to the third message, and the second RAN node is used to page the second terminal, the The second RAN node is located in a tracking area of the second terminal, which may include one or more second RAN nodes.

For example, after receiving the third message, the second AMF node determines that the second terminal cannot be paged through the first terminal, the second AMF node sends a paging message to the second RAN node in the tracking area of the second terminal, and the first terminal The second RAN node then sends a paging message to try to page the second terminal, but the present application is not limited to this.

In another optional implementation manner, the third message includes first time information, where the first time information is used to indicate the time when the first AMF node sends the above-mentioned first message to the first terminal, or the first time The information is used to indicate the time when the first terminal enters the idle state and is reachable or the time when the first terminal enters the connected state.

For example, the first AMF node determines the first time information according to the first terminal DRX information or eDRX information. Specifically, the first AMF node determines the time interval before the first terminal device enters the wake-up state as the first time information, or the first AMF node determines the length of time that the first terminal device is in the sleep state as the first time information, but The present application is not limited to this.

Optionally, after receiving the third message, the second AMF node may determine, according to the third message, whether to wait for the first AMF node to send the first message to page the second terminal through the first terminal, and determine at the second AMF node whether to wait for the first AMF node to send the first message to page the second terminal through the first terminal. In the waiting case, the second AMF node waits for the first AMF node to send the first message to page the second terminal. Specifically, the second AMF node determines whether to wait according to the first time information in the third message. If the time corresponding to the first time information is longer than the threshold time length, the second AMF node determines not to wait. If the time corresponding to the first time information When not longer than the threshold time length, the second AMF node determines to wait. The threshold time length may be preconfigured at the second AMF node.

Optionally, when the second AMF node waits for the first AMF node to send the first message after a time interval corresponding to the first time information, and does not receive the NAS message of the second terminal after a period of time after sending the first message , the second AMF node can page the second terminal through the second RAN. Alternatively, when the second AMF node determines not to wait, the second AMF node may page the second terminal through the second RAN, but the present application is not limited thereto.

Optionally, after the AMF node of the first terminal is changed from the first AMF node to the third AMF node, the second AMF node may determine the changed AMF node of the first terminal, that is, the third AMF node, in the following manner. So that when the second AMF node needs to page the second terminal, the second AMF node can send a second message to the third AMF node to achieve by paging the second terminal.

The second AMF node receives the seventh message, where the seventh message is used to instruct the AMF node of the first terminal to be changed to the third AMF node.

Optionally, the seventh message comes from the first AMF node or the third AMF node.

Optionally, the seventh message includes the identifier of the first terminal, or the seventh message includes the identifier of the first terminal and the identifier of the third AMF node.

For example, the seventh message includes the identifier of the first terminal, and the second AMF node obtains the identifier of the third AMF according to the identifier of the first terminal in the seventh message, thereby determining that the AMF node of the first terminal is changed to the third AMF node. The identifier of the first terminal in the seventh message is GUTI, and the second AMF node determines that the AMF node of the first terminal is changed to the third AMF node according to the GUAMI in the GUTI of the first terminal, but the present application is not limited to this.

For another example, the seventh message includes the identity of the first terminal and the identity of the third AMF node. After receiving the seventh message, the second AMF node determines that the AMF node of the first terminal has changed according to the identifier of the first terminal in the seventh message, and determines that the first terminal is changed according to the identifier of the third AMF node in the seventh message. The AMF node of the terminal is changed to the third AMF node.

Optionally, when the second AMF node subscribes to the AMF node change event of the first terminal, the second AMF node receives the seventh message, and determines according to the seventh message that the AMF node of the first terminal is changed to the third AMF node. .

Optionally, the second AMF node updates the context information of the second terminal according to the seventh message.

For example, when the seventh message includes the identifier of the first terminal, the second AMF node updates the identifier of the first terminal in the context information of the second terminal to the identifier of the first terminal indicated by the seventh message, but the present application is not limited to this .

For another example, when the seventh message includes the identifier of the first terminal and the third AMF node, the second AMF node updates the identifier of the first terminal in the context information of the second terminal to the identifier of the first terminal indicated by the seventh message, and updating the identity of the AMF node corresponding to the first terminal in the context information of the second terminal to the identity of the third AMF node indicated by the seventh message, but the present application is not limited to this.

According to the solution of the present application, when the network needs to page the remote terminal in the relay communication mode, when the relay terminal is in a connected state, the first terminal can be notified through a NAS message to forward the network to page the second terminal. information (that is, the first information), when the relay terminal is in an idle state and is reachable, the first terminal is notified to forward the first information through a paging message of the first terminal. In this case, the first AMF node notifies the second AMF node in time, so that the second AMF node pages the second terminal through the RAN node of the tracking area of the second terminal, which can improve the success probability of the network paging the remote terminal and reduce the number of search results. Signaling overhead brought by calling the remote terminal.

FIG. 5 is another schematic flowchart of a paging method provided by an embodiment of the present application.

It should be noted that, for the same or similar parts in the embodiment of FIG. 5 and the embodiment of FIG. 2 , unless otherwise defined or explained, reference may be made to the description in the embodiment of FIG. 2 , which is not repeated here for brevity.

The first terminal acts as a relay terminal to provide a relay service for a second terminal that is a remote terminal, and the second terminal registers with the network and establishes a PDU session. When the second terminal is in an idle state, the network may use the paging method provided by the embodiment of the present application shown in FIG. 5 to page the second terminal through the RAN node of the first terminal and the first terminal. The paging method includes but is not limited to the following steps.

S510, the second AMF node acquires the identifier of the RAN node of the first terminal.

The second AMF node is an AMF node corresponding to the second terminal, and the second AMF node obtains the identifier of the RAN node of the first terminal, and determines the RAN node that provides the radio access network service for the first terminal according to the identifier, so as to pass the first terminal through the identifier of the RAN node. The RAN node of a terminal and the first terminal pages the second terminal.

The RAN node of the first terminal refers to a RAN node where the first terminal establishes a wireless connection through an access process, or a RAN node where the first terminal resides, or a RAN where the first terminal resides or is connected in a connected state node.

Optionally, the second AMF node may acquire the identifier of the RAN node of the first terminal from the first AMF node, where the first AMF node is an AMF node corresponding to the first terminal. For example, the second AMF node receives a second message from the first AMF node, where the second message includes the identifier of the RAN node of the first terminal, but the present application is not limited thereto.

In an optional implementation manner, the second AMF node may page the second terminal when it is necessary (for example, there is NAS signaling of the second terminal to be transmitted or downlink data of the second terminal requires the second terminal) Next, send a third message to the first AMF node, where the third message is used to request the information of the RAN node of the first terminal. After receiving the third message, the first AMF node sends the second message to the second AMF node, but the present application is not limited to this.

Optionally, the first AMF node receives the third message from the second AMF node, and when the first terminal is in a connected state, the first AMF node sends the second message to the second AMF node to notify the Information of the RAN node of the first terminal of the two AMF nodes; when the first terminal is not in a connected state (for example, the first terminal is in an idle state), the first AMF node does not send the second AMF node to the second AMF node message, or, the first AMF node sends a message D to the second AMF node, where the message D is used to notify the second AMF node that the first terminal is not in the connected state or the state in which the first terminal is.

Optionally, before sending the third message, the second AMF node may obtain the state of the first terminal, and when the second AMF node obtains that the first terminal is in the connected state, sends the third message to the first AMF node. message to request information of the RAN node of the first terminal.

In another optional implementation manner, the first AMF node sends the second message to the second AMF node to notify the second AMF node that the first terminal provides a relay service for the second terminal The identity of the RAN node of a terminal. When the RAN node of the first terminal changes (eg in the case of handover), the first AMF node notifies the second AMF node of the current identity of the RAN node of the first terminal through the second message, but the present application is not limited to this.

Optionally, the second message further includes an identifier of a first interface, where the first interface is used for transmitting data of the first terminal between the RAN node of the first terminal and the first AMF node.

As an example and not limitation, the identifier of the first interface is the identifier of the N2 interface allocated to the first terminal by the RAN node of the first terminal. For example, the identifier of the first interface is a RAN UE next generation application protocol (next generation application protocol, NGAP) identifier, which can be written as a RAN UE NGAP ID.

S520, the second AMF node sends the first message to the RAN node of the first terminal.

The first message may be used by the RAN node to page the second terminal through the first terminal.

Accordingly, the RAN node of the first terminal receives the first message from the second AMF node. The first message is used by the RAN node to page the second terminal through the first terminal. In other words, the first message is used to notify or instruct the RAN node to page the second terminal through the first terminal. When the second AMF node needs to page the second terminal, it can send the first message to the RAN node corresponding to the identifier according to the identifier of the RAN node of the first terminal obtained in S510 to notify the RAN node to pass the first The terminal pages the second terminal.

Optionally, the first message may include the identity of the second terminal. Alternatively, the first message may include the identity of the second terminal and the identity of the first terminal.

For example, the first message includes the identifier of the second terminal. After receiving the first message, the RAN node of the first terminal determines that the network paging the second terminal, and according to the identifier of the second terminal and the first terminal stored in the RAN node The correspondence between the terminal and the second terminal determines that the first terminal is used to page the second terminal, but the present application is not limited to this.

For another example, the first message includes the identifier of the first terminal and the identifier of the second terminal, for example, the identifier of the first terminal may be the identifier of the first interface (the identifier of the first interface may uniquely identify the first terminal, Therefore, it can be called the identifier of the first terminal), the RAN node of the first terminal can determine the first terminal according to the identifier of the first interface, so the RAN node can determine to page the second terminal through the first terminal, However, the present application is not limited to this.

As an example and not limitation, the identifier of the first terminal may be the GUTI or S-TMSI of the first terminal, and/or the identifier of the second terminal may be the GUTI or S-TMSI of the second terminal.

Optionally, the first message further includes an identifier of the first PDU session, where the first PDU session is used to transmit data of the second terminal.

S530, the RAN node of the first terminal sends a fourth message to the first terminal.

Wherein, the fourth message includes first information, and the first information is used for paging the second terminal, and the fourth message may be an RRC message.

Accordingly, the first terminal receives the fourth message from the RAN node of the first terminal.

Optionally, the first information may include identification information of the second terminal, or the first information includes identification information of the second terminal and identification information of the first PDU session.

When the first terminal is in a connected state, the first terminal and the RAN node of the first terminal can exchange information through an RRC message. Therefore, the RAN node of the first terminal can notify the first terminal through an RRC message (ie, a fourth message). The terminal network pages the second terminal so that the first terminal informs the second terminal network to page the second terminal.

Optionally, the fourth message includes the identifier of the second terminal.

Optionally, the first information is specifically used to request the second terminal to establish a NAS signaling connection with the network, or the first information is used to request the second terminal to activate the first PDU session.

S540, the first terminal sends a ninth message to the second terminal.

Wherein, the ninth message is used to request the second terminal to establish a connection with the network.

Accordingly, the second terminal receives the ninth message from the first terminal. For the specific implementation of the S540, reference may be made to the specific implementation of the S240 in the embodiment of FIG. 2 , which is not repeated here for brevity.

S550, the second terminal sends a tenth message to the second AMF node.

Wherein, the tenth message may be used to respond to the paging of the network.

Accordingly, the second AMF node receives the tenth message from the second terminal. For the specific implementation of the S550, reference may be made to the specific implementation of the S240 in the embodiment of FIG. 2 , which is not repeated here for brevity.

According to the above solution, when the first terminal (ie, the relay terminal) is in the connected state, the RAN node of the first terminal can notify the first terminal through an RRC message to forward the information (ie, the first information) of the network paging the second terminal. , the signaling overhead and resource consumption caused by sending paging messages to multiple RAN nodes in the tracking area can be reduced.

It should be understood that, in the above-mentioned embodiments, the size of the sequence numbers of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. .

Those skilled in the art can clearly understand that the various numbers or letter numbers such as "first", "second", "1", "2", "A", "B" in this application are only for the convenience of description Differentiation is not intended to limit the embodiments of the present application.

In the above, the methods provided by the embodiments of the present application are described in detail with reference to FIG. 2 to FIG. 5 . Hereinafter, the apparatus provided by the embodiments of the present application will be described in detail with reference to FIG. 6 to FIG. 9 .

FIG. 6 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application. As shown in FIG. 6 , the communication apparatus 600 may include a processing unit 610 and a transceiver unit 620 .

In a possible design, the communication apparatus 600 may correspond to the first terminal in the above method embodiments, or be configured in (or used in) a chip in the first terminal.

It should be understood that the communication apparatus 600 may correspond to the first terminal in the

methods

300, 400, and 500 according to the embodiments of the present application, and the communication apparatus 600 may include a method for executing the method 300 in FIG. 3, FIG. 4, and FIG. In 400 and 500, the unit of the method executed by the first terminal. The units in the communication apparatus 600 and the other operations and/or functions mentioned above are respectively to implement the corresponding processes of the

methods

300 , 400 and 500 in FIG. 3 , FIG. 4 , and FIG. 5 .

In another possible design, the communication device 600 may correspond to the second terminal in the above method embodiments, or be configured in (or used in) a chip in the second terminal.

It should be understood that the communication apparatus 600 may correspond to the second terminal in the

methods

300, 400, and 500 according to the embodiments of the present application, and the communication apparatus 600 may include a method for executing the method 300 in FIG. 3, FIG. 4, and FIG. In 400 and 500, the unit of the method executed by the second terminal. The units in the communication apparatus 600 and the other operations and/or functions mentioned above are respectively to implement the corresponding processes of the

methods

300 , 400 and 500 in FIG. 3 , FIG. 4 , and FIG. 5 .

It should also be understood that when the communication apparatus 600 is a chip configured (or used in) a terminal device, the transceiver unit 620 in the communication apparatus 600 may be an input/output interface or circuit of the chip, and the processing in the communication apparatus 600 Unit 610 may be a processor in a chip.

Optionally, the communication apparatus 600 may further include a processing unit 610, and the processing unit 610 may be configured to process instructions or data to implement corresponding operations.

Optionally, the communication apparatus 600 may further include a storage unit, which may be used to store instructions or data, and the processing unit 610 may execute the instructions or data stored in the storage unit, so that the communication apparatus realizes corresponding operations, the The transceiver unit 620 in the communication device 600 in the communication device 600 may correspond to the transceiver 720 in the terminal device 700 shown in FIG. 7 , and the storage unit may correspond to the memory in the terminal device 700 shown in FIG. 7 . 730.

It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiments, and for the sake of brevity, it will not be repeated here.

It should also be understood that when the communication apparatus 600 is a terminal device, the transceiver unit 620 in the communication apparatus 600 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it may correspond to the terminal shown in FIG. 7 . The transceiver 720 in the device 700, the processing unit 610 in the communication device 600 may be implemented by at least one processor, for example, may correspond to the processor 710 in the terminal device 700 shown in FIG. The processing unit 610 may be implemented by at least one logic circuit.

In another possible design, the communication apparatus 600 may correspond to the RAN node in the above method embodiments, or be configured in (or used in) a chip in the RAN node.

It should be understood that the communication apparatus 600 may correspond to the RAN node in the

methods

400 and 500 according to the embodiments of the present application, and the communication apparatus 600 may include the RAN node for executing the

methods

400 and 500 in FIG. 4 and FIG. 5 . method unit. The units in the communication device 600 and the other operations and/or functions mentioned above are to implement the corresponding processes of the

methods

400 and 500 in FIG. 4 and FIG. 5 , respectively.

It should also be understood that when the communication device 600 is a chip configured (or used in) a RAN node, the transceiver unit 620 in the communication device 600 may be an input/output interface or circuit of the chip, and the processing in the communication device 600 Unit 610 may be a processor in a chip.

Optionally, the communication apparatus 600 may further include a storage unit, which may be used to store instructions or data, and the processing unit 610 may execute the instructions or data stored in the storage unit, so that the communication apparatus realizes corresponding operations, the The transceiver unit 620 in the communication apparatus 600 in the communication apparatus 600 may correspond to the transceiver 810 in the RAN apparatus 800 shown in FIG. 8 , and the storage unit may correspond to the memory in the RAN apparatus 800 shown in FIG. 8 . 821.

It should also be understood that when the communication apparatus 600 is a RAN device, the transceiver unit 620 in the communication apparatus 600 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the RAN shown in FIG. 8 . The transceiver 810 in the apparatus 800, the processing unit 610 in the communication apparatus 600 may be implemented by at least one processor, for example, may correspond to the processor 820 in the RAN apparatus 800 shown in FIG. The processing unit 610 may be implemented by at least one logic circuit.

In another possible design, the communication device 600 may correspond to the AMF node in the above method embodiment, or be configured in (or used in) a chip in the AMF node.

It should be understood that the communication apparatus 600 may correspond to an AMF node (a first AMF node or a second AMF node) in the

methods

200, 300, 400, and 500 according to the embodiments of the present application, and the communication apparatus 600 may include a graph for executing the 2. Units of the method performed by the AMF node in Figure 3, Figure 4, and Figure 4 in Figure 5 and Figure 5. Each unit in the communication device 600 and the above-mentioned other operations and/or functions are intended to implement the corresponding processes of the blocks 4 and 5 in FIG. 2 , FIG. 3 , FIG. 4 , and FIG. 5 , respectively.

It should also be understood that when the communication device 600 is a chip configured in (or used in) an AMF node, the transceiver unit 620 in the communication device 600 may be an input/output interface or circuit of the chip, and the processing in the communication device 600 Unit 610 may be a processor in a chip.

Optionally, the communication apparatus 600 may further include a storage unit, which may be used to store instructions or data, and the processing unit 610 may execute the instructions or data stored in the storage unit, so that the communication apparatus realizes corresponding operations, the The transceiver unit 620 in the communication apparatus 600 in the communication apparatus 600 may correspond to the transceiver 920 in the communication apparatus 900 shown in FIG. 9 , and the storage unit may correspond to the memory in the communication apparatus 900 shown in FIG. 9 . 930.

It should also be understood that when the communication apparatus 600 is a communication device, the transceiver unit 620 in the communication apparatus 600 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the communication shown in FIG. 9 . The transceiver 920 in the device 900, the processing unit 610 in the communication device 600 may be implemented by at least one processor, for example, may correspond to the processor 910 in the communication device 900 shown in FIG. The processing unit 610 may be implemented by at least one logic circuit.

FIG. 7 is a schematic structural diagram of a terminal device 700 provided by an embodiment of the present application. The terminal device 700 can be applied to the system shown in FIG. 1 to perform the functions of the terminal device in the foregoing method embodiments. As shown, the terminal device 700 includes a processor 710 and a transceiver 720 . Optionally, the terminal device 700 further includes a memory 730 . Exemplarily, the processor 710, the transceiver 720 and the memory 730 can communicate with each other through an internal connection path to transmit control and/or data signals, the memory is used to store computer programs, and the processor 710 is used to execute the memory 730. in the computer program to control the transceiver 720 to send and receive signals.

The above-mentioned processor 710 and the memory 730 can be combined into a processing device, and the processor 720 is configured to execute the program codes stored in the memory 730 to realize the above-mentioned functions. During specific implementation, the memory 730 may also be integrated in the processor 720 or independent of the processor 720 . The processor 720 may correspond to the processing unit in FIG. 6 .

The transceiver 720 described above may correspond to the transceiver unit in FIG. 6 . The transceiver 720 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Illustratively, the receiver is used for receiving signals, and the transmitter is used for transmitting signals.

It should be understood that the terminal device 700 shown in FIG. 7 can implement various processes involving the terminal device in the method embodiments shown in FIG. 2 , FIG. 4 , and FIG. 5 . The operations and/or functions of each module in the terminal device 700 are respectively to implement the corresponding processes in the foregoing method embodiments. For details, reference may be made to the descriptions in the foregoing method embodiments, and to avoid repetition, the detailed descriptions are appropriately omitted here.

The above-mentioned processor 710 may be used to perform the actions described in the foregoing method embodiments that are implemented internally by the terminal device, and the transceiver 720 may be used to execute the operations described in the foregoing method embodiments that the terminal device sends to or receives from the network device. action. For details, please refer to the descriptions in the foregoing method embodiments, which will not be repeated here.

Optionally, the above-mentioned terminal device 700 may further include a power supply for providing power to various devices or circuits in the terminal device. In addition, in order to make the functions of the terminal device more complete, the terminal device 700 may further include one or more of an input unit 760, a display unit 770, an audio circuit 780, a camera 790, a sensor 711, etc., the audio circuit Speakers 782, microphones 784, etc. may also be included.

FIG. 8 is a schematic structural diagram of a RAN device 800 provided by an embodiment of the present application. The RAN device 800 can be applied to the system as shown in FIG. 1 to perform the functions of the RAN node in the above method embodiments. As shown, the RAN device 800 includes a processor 820 and a transceiver 810. Optionally, the RAN device 800 further includes a memory. Exemplarily, the processor 820, the transceiver 810 and the memory can communicate with each other through an internal connection path to transmit control and/or data signals, the memory is used for storing computer programs, and the processor 820 is used for executing the memory in the memory. The computer program controls the transceiver 810 to send and receive signals. Optionally, the transceiver 810 of the RAN device 800 may include an antenna and/or radio frequency circuitry.

It should be understood that the RAN device 800 shown in FIG. 8 can implement various processes involving the RAN device 800 in the method embodiments shown in FIGS. 4 and 5 . The operations and/or functions of each module in the RAN device 800 are respectively to implement the corresponding processes in the foregoing method embodiments. For details, reference may be made to the descriptions in the foregoing method embodiments, and to avoid repetition, the detailed descriptions are appropriately omitted here.

It should be understood that the RAN device 800 shown in FIG. 8 is only a possible architecture of the RAN device, and should not constitute any limitation to the present application. The methods provided in this application may be applicable to network devices of other architectures. For example, network equipment including CU, DU, and AAU, etc. This application does not limit the specific architecture of the network device.

FIG. 9 shows a communication device 900 provided by an embodiment of the present application, and the device 900 may be the above-mentioned AMF node or a communication device having the above-mentioned AMF node function. The device may adopt the hardware architecture shown in FIG. 9 . The apparatus may include a processor 910 and a transceiver 920, and optionally, the apparatus may further include a memory 930, and the processor 910, the transceiver 920 and the memory 930 communicate with each other through an internal connection path. The related functions implemented by the processing unit 610 in FIG. 6 can be implemented by the processor 910 , and the related functions implemented by the transceiver unit 620 can be implemented by the processor 910 controlling the transceiver 920 .

An embodiment of the present application further provides a processing apparatus, including a processor and an interface, where the processor is configured to execute the method in any of the foregoing method embodiments.

It should be understood that the above-mentioned processing device may be one or more chips. For example, the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), or a It is a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller unit). , MCU), it can also be a programmable logic device (PLD) or other integrated chips.

In the implementation process, each step of the above-mentioned method can be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.

It should be noted that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The aforementioned processors may be general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components . The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Exemplarily, the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (erasable PROM, EPROM), Electrically Erasable Programmable Read Only Memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), 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 link dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the present application, the present application further provides a computer program product, the computer program product includes: computer program code, when the computer program code is executed by one or more processors, the computer program code including the processor The apparatus executes the methods in the embodiments shown in FIG. 3 , FIG. 4 , and FIG. 5 .

According to the methods provided by the embodiments of the present application, the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores program codes, and when the program codes are executed by one or more processors, the processing includes the processing The device of the controller executes the methods in the embodiments shown in FIG. 3 , FIG. 4 , and FIG. 5 .

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the aforementioned one or more network devices. The system may also include one or more of the aforementioned terminal devices.

The network equipment in each of the above apparatus embodiments completely corresponds to the terminal equipment and the network equipment or terminal equipment in the method embodiments, and corresponding steps are performed by corresponding modules or units. For the sending step, other steps except sending and receiving may be performed by a processing unit (processor). For functions of specific units, reference may be made to corresponding method embodiments. Exemplarily, there may be one or more processors.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state discs, SSD)) etc.

The network equipment in each of the above apparatus embodiments completely corresponds to the terminal equipment and the network equipment or terminal equipment in the method embodiments, and corresponding steps are performed by corresponding modules or units. For the sending step, other steps except sending and receiving may be performed by a processing unit (processor). For functions of specific units, reference may be made to corresponding method embodiments. The number of processors may be one or more.

The terms "component", "module", "system" and the like are used in this specification to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device may be components. One or more components may reside within a process and/or thread of execution, and a component may be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet interacting with other systems via signals) Communicate through local and/or remote processes.

Those of ordinary skill in the art can realize 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. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

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

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

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in 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 alone, or two or more units may be integrated into one unit.

In the above embodiments, the functions of each functional unit may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.

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

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

A paging method, comprising:

The first mobility management function node receives a second message from the second mobility management function node, the second message is used to request the first mobility management function node to page the second terminal through the first terminal, wherein the first mobility management function node A mobility management function node is a mobility management function node of the first terminal, and the first terminal provides a relay service for the second terminal;

When the state of the first terminal is a connected state, the first mobility management function node sends a first message to the first terminal, where the first message includes first information, and the first information uses For paging the second terminal, the first message is a non-access stratum NAS message.
The method according to claim 1, wherein the method further comprises:

When the first terminal is in an idle state and is unreachable, the first mobility management function node sends a third message to the second mobility management function node,

The third message is used to instruct the first mobility management function node to reject the request of the second mobility management function node to page the second terminal, or,

The third message includes first time information, where the first time information is used to indicate the time when the first mobility management function node sends the first message to the first terminal, or the first time The information is used to indicate the time when the first terminal enters the idle state and is reachable or the time when the first terminal enters the connected state.
The method according to claim 1 or 2, wherein the method further comprises:

When the first terminal is in an idle state and is reachable, the first mobility management function node sends a fourth message to the first radio access network RAN node, where the fourth message is used for paging the first terminal A terminal, the fourth message includes first information for paging the second terminal, the first RAN node being located in the tracking area of the first terminal.
The method according to any one of claims 1 to 3, wherein the method further comprises:

The first mobility management function node sends a fifth message to the second mobility management function node, where the fifth message is used to notify the state of the first terminal.
The method according to claim 4, wherein the method further comprises:

receiving, by the first mobility management function node, a sixth message from the first terminal, where the sixth message includes an identifier of the second terminal;

The first mobility management function node acquires the identifier of the second mobility management function node according to the identifier of the second terminal.
The method according to any one of claims 1 to 5, wherein the method further comprises:

The first mobility management function node sends a seventh message to the second mobility management function node, where the seventh message is used to instruct the first terminal's mobility management function node to be changed to a third mobility management function node.
A paging method, comprising:

The second mobility management function node obtains the identifier of the first mobility management function node, wherein the first mobility management function node is the mobility management function node of the first terminal, and the second mobility management function node is the mobility management function node of the second terminal a management function node, the first terminal provides a relay service for the second terminal;

The second mobility management function node sends a second message to the first mobility management function node according to the identifier of the first mobility management function node, where the second message is used to request the first mobility management function node The second terminal is paged through the first terminal.
The method according to claim 7, wherein the method further comprises:

the second mobility management function node receives a third message from the first mobility management function node, the third message is used to instruct the first mobility management function node to reject the second mobility management function node from paging the request of the second terminal, or,

The third message includes first time information, where the first time information is used to indicate the time when the first mobility management function node sends the first message to the first terminal, or the first time information It is used to indicate the time when the first terminal enters the idle state and is reachable or the time when the first terminal enters the connected state.
The method according to claim 8, wherein the method further comprises:

The second mobility management function node sends an eighth message to the second radio access network RAN node according to the third message, where the eighth message is used to page the second terminal, and the second RAN node is located in in the tracking area of the second terminal.
The method according to any one of claims 7 to 9, wherein the method further comprises:

receiving, by the second mobility management function node, a fifth message from the first mobility management function node, where the fifth message is used to notify the state of the first terminal;

The second mobility management function node sends the second message to the first mobility management function node, including:

The second mobility management function node sends the second message to the first mobility management function node according to the state of the first terminal.
The method according to claim 10, wherein, according to the state of the first terminal, the second mobility management function node sends the second message to the first mobility management function node, comprising:

When the first terminal is in a connected state or in an idle state and is reachable, the second mobility management function node sends the second message to the first mobility management function node.
The method according to any one of claims 7 to 11, wherein the method further comprises:

The second mobility management function node receives a seventh message from the first mobility management function node or the third mobility management function node, where the seventh message is used to instruct the first terminal's mobility management function node to be changed to the third mobility management function node;

The second mobility management function node updates the context information of the second terminal according to the seventh message.
A paging method, comprising:

The second mobility management function node obtains the identity of the RAN node of the first terminal, wherein the second mobility management function node is the mobility management function node of the second terminal, and the first terminal provides a relay for the second terminal Serve;

The second mobility management function node sends a first message to the RAN node according to the identity of the RAN node, where the first message is used by the RAN node to page the second terminal through the first terminal .
The method according to claim 13, wherein the second mobility management function node obtains the identifier of the RAN node of the first terminal, comprising:

The second mobility management function node receives a second message from the first mobility management function node, where the second message includes the identifier of the RAN node, wherein the first mobility management function node is the first terminal The mobility management function node of .
The method of claim 14, wherein the method further comprises:

The second mobility management function node sends a third message to the first mobility management function node, where the third message is used to request information of the RAN node of the first terminal.
The method according to claim 14 or 15, wherein the second message further includes an identifier of a first interface, and the first interface is used between the RAN node and the first mobility management function node Data of the first terminal is transmitted.
The method according to any one of claims 13 to 15, wherein the first message includes the identifier of the second terminal, or the first message includes the identifier of the first terminal and the identifier of the first terminal. the identifier of the second terminal.
A paging method, comprising:

The RAN node of the radio access network receives a first message from the second mobility management function node, the first message is used by the RAN node to page the second terminal through the first terminal, and the second mobility management function node is the a mobility management function node of the second terminal, and the first terminal provides a relay service for the second terminal;

When the first terminal is in a connected state, the RAN node sends a fourth message to the first terminal according to the first message, where the fourth message includes first information, and the first information is used for The second terminal is paged.
The method according to claim 18, wherein the first message includes an identifier of the second terminal, or the first message includes an identifier of the first terminal and an identifier of the second terminal .
The method according to claim 18 or 19, wherein the fourth message is a radio resource control RRC message.
A paging method, comprising:

The first terminal receives first information, the first information is used to page the second terminal, and the first terminal provides a relay service for the second terminal;

The first terminal sends a ninth message to the second terminal according to the first information, where the ninth message is used to request the second terminal to establish a connection with the network.
The method according to claim 21, wherein the first information comes from a first mobility management function node of the first terminal or a RAN node of the first terminal.
The method according to claim 21 or 22, wherein the fifth message includes the first information, or,

The fifth message includes second information, where the second information is used to indicate that there is downlink data to be received by the second terminal.
The method according to any one of claims 21 to 23, wherein the method further comprises:

The first terminal sends a sixth message to the first mobility management function node, where the sixth message includes the identifier of the second terminal.
A paging method, comprising:

The first mobility management function node obtains the identifier of the RAN node of the first terminal, and the first mobility management function node is the mobility management function node of the first terminal;

the first mobility management function node sends a second message to the second mobility management function node, where the second message includes the identity of the RAN node,

The second mobility management function node is a mobility management function node of the second terminal, and the first terminal provides a relay service for the second terminal.
The method according to claim 25, wherein the second message further includes an identifier of a first interface, and the first interface is used to transmit all data between the RAN node and the first mobility management function node. data of the first terminal.
The method of claim 25, wherein the method further comprises:

The first mobility management function node receives a third message from the second mobility management function node, where the third message is used to request information of the RAN node of the first terminal.
The method according to any one of claims 25 to 27, wherein the method further comprises:

receiving, by the first mobility management function node, a sixth message from the first terminal, where the sixth message includes an identifier of the second terminal;

The first mobility management function node acquires the identifier of the second mobility management function node according to the identifier of the second terminal.
A communication device, characterized by comprising a module for performing the method according to any one of claims 1 to 28.
A communication device, characterized in that it comprises a processor and a memory, the processor and the memory are coupled, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory to achieve A method as claimed in any one of claims 1 to 28.
A computer-readable storage medium, characterized by comprising a computer program, which, when the computer program runs on a computer, causes the computer to execute the method according to any one of claims 1 to 28.