Communication method, apparatus, terminal, network-side device, medium, and product

Abstract

The application discloses a communication method, device, terminal, network side equipment, medium and product, and belongs to the communication field. The communication method comprises the following steps: a first network function (NF) performs at least one of the following: in the case of receiving a first message sent by a second NF, a second message is sent to an access network equipment; wherein the first message comprises a NAS message sent by the second NF to a terminal, and / or the first message is used for triggering the first NF to page the terminal; the second message is used for paging the terminal, and the second message comprises a first identifier, wherein the first identifier comprises a terminal identifier corresponding to the terminal and the second NF; in the case of receiving a third message sent by the access network equipment, a fourth message is sent to the access network equipment, the third message is used for requesting information of the second NF, and the fourth message comprises the information of the second NF; wherein the second NF is other NFs except the NFs containing mobility management functions.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a communication method, device, terminal, network-side equipment, medium, and product. Background Technology

[0002] In the 5th-Generation (5G) Service Based Architecture (SBA), the core network control plane elements include network functions (NFs) such as Access & Mobility Management Function (AMF), Session Management Function (SMF), Policy Control Function (PCF), Unified Data Management (UDM), and Authentication Server Function (AUSF).

[0003] In related technologies, when a network-side device triggers a terminal to enter the connected state from the idle state, it can only do so through the mobility management function, resulting in a heavy load on the mobility management function. Summary of the Invention

[0004] This application provides a communication method, apparatus, terminal, network-side equipment, medium, and product that can solve the problem of heavy workload in mobility management functions.

[0005] Firstly, a communication method is provided, the method comprising:

[0006] The first network function (NF) performs at least one of the following:

[0007] Upon receiving a first message from a second NF, a second message is sent to the access network device; wherein, the first message includes a non-access stratum NAS message sent by the second NF to the terminal, and / or, the first message is used to trigger the first NF to paging the terminal; the second message is used to paging the terminal, and the second message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF;

[0008] Upon receiving a third message from the access network device, a fourth message is sent to the access network device, wherein the third message is used to request information of the second NF, and the fourth message includes information of the second NF;

[0009] The second NF is any NF other than the NF that includes mobility management functionality.

[0010] Secondly, a communication method is provided, the method comprising:

[0011] The terminal executes at least one of the following:

[0012] Receive an eleventh message sent by an access network device, wherein the eleventh message is used for paging a terminal, and the eleventh message includes a first identifier, the first identifier including a terminal identifier of the terminal corresponding to a second NF;

[0013] Receive the twelfth message sent by the access network device, the twelfth message including information of the second NF;

[0014] The second NF is any NF other than the NF that includes mobility management functionality.

[0015] Thirdly, a communication method is provided, the method comprising:

[0016] Access network devices perform at least one of the following:

[0017] Send an eleventh message to the terminal, wherein the eleventh message is used to page the terminal, and the eleventh message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF;

[0018] Send a twelfth message to the terminal; wherein the twelfth message is a response message to the fifteenth message, the fifteenth message is used to request information of the second NF, and the twelfth message includes information of the second NF;

[0019] The second NF is any NF other than the NF that includes mobility management functionality.

[0020] Fourthly, a communication method is provided, which includes:

[0021] The second NF sends a first message to the first NF, the first message including a NAS message sent by the second NF to the terminal, and / or the first message is used to trigger the first NF to paging the terminal;

[0022] The first message includes a first identifier, which includes the terminal identifier of the terminal corresponding to the second NF;

[0023] The second NF is any NF other than the NF that includes mobility management functionality.

[0024] Fifthly, a communication method is provided, the method comprising:

[0025] The first network function (NF) sends first identification information and second identification information to the first communication node;

[0026] Wherein, the first identification information is used by the first communication node to determine the timing of sending the first broadcast message, and the second identification information is used by the first communication node to carry in the first broadcast message;

[0027] The second identification information indicates the first communication device, or is identification information used by the first communication device. The first identification information is also used by the first communication device to determine the timing of receiving or listening to broadcast messages.

[0028] Sixthly, a communication method is provided, the method comprising:

[0029] The first communication node receives first identification information and second identification information from the first NF;

[0030] The first communication node determines the timing of sending the first broadcast message based on the first identification information, and the first broadcast message carries the second identification information;

[0031] The first communication node sends the first broadcast message based on the specified sending timing;

[0032] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0033] Seventhly, a communication method is provided, the method comprising:

[0034] The first communication device determines the timing for receiving or listening to broadcast messages based on the first identification information;

[0035] The first communication device receives or listens to the broadcast message based on the receiving or listening timing;

[0036] The first communication device accepts and / or responds to the broadcast message if the broadcast message includes the second identification information;

[0037] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0038] Eighthly, a communication device is provided, comprising:

[0039] The first execution module includes:

[0040] A first sending module is configured to send a second message to an access network device upon receiving a first message sent by a second NF; wherein the first message includes a non-access stratum (NAS) message sent by the second NF to a terminal, and / or the first message is configured to trigger the communication device to page a terminal; the second message is configured to page a terminal, and the second message includes a first identifier, the first identifier including a terminal identifier of the terminal corresponding to the second NF;

[0041] The second sending module is configured to send a fourth message to the access network device upon receiving a third message from the access network device, wherein the third message is used to request information of the second NF, and the fourth message includes information of the second NF.

[0042] The second NF is any NF other than the NF that includes mobility management functionality.

[0043] Ninthly, a communication device is provided, comprising:

[0044] The third execution module includes at least one of the following:

[0045] The third receiving module is used to receive the eleventh message sent by the access network device, wherein the eleventh message is used to page the communication device, and the eleventh message includes a first identifier, the first identifier including the terminal identifier of the communication device corresponding to the second NF;

[0046] The fourth receiving module is used to receive the twelfth message sent by the access network device, the twelfth message including information of the second NF;

[0047] The second NF is any NF other than the NF that includes mobility management functionality.

[0048] Tenthly, a communication device is provided, comprising:

[0049] The fourth execution module includes at least one of the following:

[0050] The sixth sending module is used to send an eleventh message to the terminal, wherein the eleventh message is used to page the terminal, and the eleventh message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF;

[0051] The seventh sending module is used to send a twelfth message to the terminal; wherein the twelfth message is a response message to the fifteenth message, the fifteenth message is used to request information of the second NF, and the twelfth message includes information of the second NF;

[0052] The second NF is any NF other than the NF that includes mobility management functionality.

[0053] Eleventhly, a communication device is provided, comprising:

[0054] The ninth sending module is used to send the first message to the first NF;

[0055] Wherein, the first message includes a NAS message sent by the communication device to the terminal, and / or, the first message is used to trigger the first NF paging terminal;

[0056] The first message includes a first identifier, which includes a terminal identifier corresponding to the communication device.

[0057] The communication device includes NFs other than those containing mobility management functions.

[0058] In a twelfth aspect, a communication device is provided, comprising:

[0059] The fourteenth sending module is used to send first identification information and second identification information to the first communication node;

[0060] Wherein, the first identification information is used by the first communication node to determine the timing of sending the first broadcast message, and the second identification information is used by the first communication node to carry in the first broadcast message;

[0061] The second identification information indicates the first communication device, or is identification information used by the first communication device. The first identification information is also used by the first communication device to determine the timing of receiving or listening to broadcast messages.

[0062] In a thirteenth aspect, a communication device is provided, comprising:

[0063] The twelfth receiving module is used to receive first identification information and second identification information from the first NF;

[0064] The second determining module is used to determine the timing of sending the first broadcast message based on the first identification information, wherein the first broadcast message carries the second identification information;

[0065] The fifteenth sending module is used to send the first broadcast message based on the sending timing;

[0066] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0067] In a fourteenth aspect, a communication device is provided, comprising:

[0068] The third determining module is used to determine the timing of receiving or listening to broadcast messages based on the first identification information;

[0069] The thirteenth receiving module is used to receive or listen to the broadcast message based on the receiving or listening timing;

[0070] A response module is configured to accept and / or respond to the broadcast message if the broadcast message includes second identification information;

[0071] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0072] In a fifteenth aspect, a communication device is provided, the device being configured to perform the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect, or implement the steps of the method described in the third aspect, or implement the steps of the method described in the fourth aspect, or implement the steps of the method described in the fifth aspect, or implement the steps of the method described in the sixth aspect, or implement the steps of the method described in the seventh aspect.

[0073] In a sixteenth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect, or implementing the steps of the method as described in the sixth aspect, or implementing the steps of the method as described in the seventh aspect.

[0074] In a seventeenth aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is configured to perform at least one of the following:

[0075] Receive an eleventh message sent by an access network device, wherein the eleventh message is used for paging a terminal, and the eleventh message includes a first identifier, the first identifier including a terminal identifier of the terminal corresponding to a second NF;

[0076] Receive the twelfth message sent by the access network device, the twelfth message including information of the second NF;

[0077] The second NF is any NF other than the NF that includes mobility management functionality.

[0078] Alternatively, the communication interface is used for:

[0079] Receive first identification information and second identification information from the first NF;

[0080] The timing of sending the first broadcast message is determined based on the first identification information, and the first broadcast message carries the second identification information;

[0081] The first broadcast message is sent based on the specified sending timing;

[0082] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0083] Alternatively, the communication interface is used for:

[0084] The timing for receiving or listening to broadcast messages is determined based on the first identification information;

[0085] Receive or listen to the broadcast message based on the specified receiving or listening timing;

[0086] If the broadcast message includes second identification information, accept and / or respond to the broadcast message;

[0087] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0088] Eighteenthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect, or implementing the steps of the method as described in the third aspect, or implementing the steps of the method as described in the fourth aspect, or implementing the steps of the method as described in the fifth aspect, or implementing the steps of the method as described in the sixth aspect.

[0089] In a nineteenth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is configured to perform at least one of the following:

[0090] Upon receiving a first message from a second NF, a second message is sent to the access network device; wherein, the first message includes a non-access stratum NAS message sent by the second NF to the terminal, and / or, the first message is used to trigger the first NF to paging the terminal; the second message is used to paging the terminal, and the second message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF;

[0091] Upon receiving a third message from the access network device, a fourth message is sent to the access network device, wherein the third message is used to request information of the second NF, and the fourth message includes information of the second NF;

[0092] The second NF is any NF other than the NF that includes mobility management functionality.

[0093] Alternatively, the communication interface may be used to perform at least one of the following:

[0094] Send an eleventh message to the terminal, wherein the eleventh message is used to page the terminal, and the eleventh message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF;

[0095] Send a twelfth message to the terminal; wherein the twelfth message is a response message to the fifteenth message, the fifteenth message is used to request information of the second NF, and the twelfth message includes information of the second NF;

[0096] The second NF is any NF other than the NF that includes mobility management functionality.

[0097] Alternatively, the communication interface is used to send a first message to the first NF, the first message including a NAS message sent by the second NF to the terminal, and / or, the first message is used to trigger the first NF to page the terminal;

[0098] The first message includes a first identifier, which includes the terminal identifier of the terminal corresponding to the second NF;

[0099] The second NF is any NF other than the NF that includes mobility management functionality.

[0100] Alternatively, the communication interface is used to send first identification information and second identification information to the first communication node;

[0101] Wherein, the first identification information is used by the first communication node to determine the timing of sending the first broadcast message, and the second identification information is used by the first communication node to carry in the first broadcast message;

[0102] The second identification information indicates the first communication device, or is identification information used by the first communication device. The first identification information is also used by the first communication device to determine the timing of receiving or listening to broadcast messages.

[0103] Alternatively, the communication interface is used for:

[0104] Receive first identification information and second identification information from the first NF;

[0105] The timing of sending the first broadcast message is determined based on the first identification information, and the first broadcast message carries the second identification information;

[0106] The first broadcast message is sent based on the specified sending timing;

[0107] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0108] In a twentieth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fourth aspect, or the steps of the method described in the fifth aspect, or the steps of the method described in the sixth aspect, or the steps of the method described in the seventh aspect.

[0109] In a twenty-first aspect, a wireless communication system is provided, comprising: a first NF, a terminal, an access network device, and a second NF, wherein the first NF is configured to perform the steps of the method described in the first aspect, the terminal is configured to perform the steps of the method described in the second aspect, the access network device is configured to perform the steps of the method described in the third aspect, and the second NF is configured to perform the steps of the method described in the fourth aspect.

[0110] Alternatively, a wireless communication system is provided, comprising: a first NF, a first communication node, and a first communication device, wherein the first NF is available to perform the steps of the method as described in the fifth aspect, the first communication node is available to perform the steps of the method as described in the sixth aspect, and the first communication device is available to perform the steps of the method as described in the seventh aspect.

[0111] In a twenty-second aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method as described in the first aspect, or the steps of the method as described in the second aspect, or the steps of the method as described in the third aspect, or the steps of the method as described in the fourth aspect, or the steps of the method as described in the fifth aspect, or the steps of the method as described in the sixth aspect, or the steps of the method as described in the seventh aspect.

[0112] In a twenty-third aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect, or to implement the steps of the method described in the third aspect, or to implement the steps of the method described in the fourth aspect, or to implement the steps of the method described in the fifth aspect, or to implement the steps of the method described in the sixth aspect, or to implement the steps of the method described in the seventh aspect.

[0113] In this embodiment of the application, the first network function (NF) performs at least one of the following: upon receiving a first message from a second NF, it sends a second message to the access network device; wherein the first message includes a NAS message sent by the second NF to the terminal, and / or, the first message is used to trigger the first NF to paging the terminal; the second message is used to paging the terminal, and the second message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF; upon receiving a third message from the access network device, it sends a fourth message to the access network device, the third message being used to request information from the second NF, the fourth message including information from the second NF; wherein, the second NF is an NF other than the NF containing mobility management functions. That is, when there is a data transmission requirement in an NF other than the NF containing mobility management functions, the access network device can directly obtain the relevant information of that NF, thereby enabling the terminal to communicate directly with that NF, thus reducing the detour of information transmission paths and reducing the load on the NF containing mobility management functions. Attached Figure Description

[0114] Figure 1 This is a block diagram of a wireless communication system applicable to embodiments of this application;

[0115] Figure 2 This is a block diagram of another wireless communication system to which the embodiments of this application can be applied;

[0116] Figure 3 This is a block diagram of another wireless communication system to which the embodiments of this application can be applied;

[0117] Figure 4 This is a flowchart of a wireless communication method applicable to embodiments of this application;

[0118] Figure 5 This is a flowchart of a communication method provided in an embodiment of this application;

[0119] Figure 6 This is a flowchart of another communication method provided in an embodiment of this application;

[0120] Figure 7 This is a flowchart of another communication method provided in an embodiment of this application;

[0121] Figure 8 This is a flowchart of another communication method provided in an embodiment of this application;

[0122] Figure 9 This is a flowchart of another communication method provided in an embodiment of this application;

[0123] Figure 10This is a flowchart of another communication method provided in an embodiment of this application;

[0124] Figure 11 This is a flowchart of another communication method provided in an embodiment of this application;

[0125] Figure 12 This is a flowchart of another communication method provided in an embodiment of this application;

[0126] Figure 13 This is a flowchart of another communication method provided in an embodiment of this application;

[0127] Figure 14 This is a flowchart of another communication method provided in an embodiment of this application;

[0128] Figure 15 This is a flowchart of another communication method provided in an embodiment of this application;

[0129] Figure 16 This is a flowchart of another communication method provided in an embodiment of this application;

[0130] Figure 17 This is a flowchart of another communication method provided in an embodiment of this application;

[0131] Figure 18 This is a flowchart of another communication method provided in an embodiment of this application;

[0132] Figure 19 This is a schematic diagram of a communication device provided in an embodiment of this application;

[0133] Figure 20 This is a schematic diagram of another communication device provided in an embodiment of this application;

[0134] Figure 21 This is a schematic diagram of another communication device provided in an embodiment of this application;

[0135] Figure 22 This is a schematic diagram of another communication device provided in an embodiment of this application;

[0136] Figure 23 This is a schematic diagram of another communication device provided in an embodiment of this application;

[0137] Figure 24 This is a schematic diagram of another communication device provided in an embodiment of this application;

[0138] Figure 25 This is a schematic diagram of another communication device provided in an embodiment of this application;

[0139] Figure 26 This is a schematic diagram of a communication device provided in an embodiment of this application;

[0140] Figure 27 This is a schematic diagram of a terminal provided in an embodiment of this application;

[0141] Figure 28 This is a schematic diagram of a network-side device provided in an embodiment of this application;

[0142] Figure 29 This is a schematic diagram of another network-side device provided in an embodiment of this application. Detailed Implementation

[0143] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0144] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0145] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0146] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0147] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0148] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform station).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (e.g., 6G), it is also within the scope of protection of this application.

[0149] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0150] For ease of understanding, the following describes some aspects of the embodiments of this application:

[0151] In related technologies, such as Figure 2 As shown, in the 5G Service Based Architecture (SBA), the core network control plane elements AMF, SMF, PCF, UDM, and AUSF communicate with each other through a Service Based Interface (SBI). The Radio Access Network (RAN) communicates with the AMF through the Reference Point Interface (N2). The N2 interface is also used to transmit Non-Access Stratum (NAS) messages between the UE and the AMF on the N1 interface. The AMF forwards messages between the RAN and the SMF, as well as session management-related NAS messages between the UE and the SMF, through the N2 interface.

[0152] In another type of SBA, such as Figure 3 As shown, the N2 interface between the RAN and AMF is service-oriented, enabling communication between the RAN and NFs such as AMF and SMF based on the SBI interface.

[0153] The above NF is a general term for all core network elements. For example, it can be a general term for 6G core network control plane elements. The above NF can be replaced by different NF types, such as AMF, SMF, PCF, etc.

[0154] In related technologies, Figure 2 and Figure 3 In the framework shown, the forwarding of NAS messages between the UE and other NFs by the AMF results in path detours and low transmission efficiency.

[0155] In this application embodiment, consideration is given to Figure 2 and Figure 3 Under the framework shown ( Figure 2(Interface improvements are needed within the framework) The UE can communicate with any NF via NAS without needing to go through AMF forwarding, thus resolving the issues of AMF overload and / or NAS path detours caused by AMF forwarding NAS messages. Specifically, Figure 2 Within this framework, reference point interfaces can be established between the RAN and other NFs in the core network, allowing the RAN to forward NAS messages between the UE and other NFs. Figure 3 Within this framework, the RAN can transmit NAS messages between the UE and the corresponding NF (such as SMF, PCF) through the SBI interface.

[0156] For example, such as Figure 4 As shown, when other NFs (e.g., SMF) in the network need to send downlink messages (DL NAS transport request) to the UE while the UE is in Connection Management Idle (CM_IDLE) state, the AMF needs to use the UE's S-Temporary Mobile Subscriber Identity (S-TMSI) to paging the UE. The UE listens for paging messages at the paging time corresponding to the S-TMSI. After receiving the paging message, the UE sends a Service Request (SR) to the AMF and enters Connection Management Connected (CM_CONNECTED) state, so that the SMF can send downlink messages (e.g., DL NAS) to the UE.

[0157] In related technologies, during the process of a terminal transitioning from an idle state to a connected state via paging, the terminal does not know which NF triggered the paging and therefore cannot paging through the NF that triggered the paging (e.g., Figure 4 Even if the SMF enters the connected state, it can still only enter the connected state through the AMF. The distributed NAS approach still has the problems of heavy AMF load and long path detour and delay.

[0158] To reduce the problems of circuitous information transmission paths and low transmission efficiency in related technologies, this application considers that the UE can communicate with any NF in NAS without needing to go through AMF forwarding (which can be understood as a distributed NAS architecture). However, in the distributed NAS approach, the UE's transition from idle state to connected state triggered by the network still can only be done through AMF, resulting in problems such as heavy AMF load and long delays due to circuitous paths.

[0159] The communication methods, devices, terminals, network-side equipment, media, and products provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0160] See Figure 5 , Figure 5 This is a flowchart of a communication method provided in an embodiment of this application, used for a first network function (NF) device, such as... Figure 5 As shown, the method includes the following steps:

[0161] Step 501: The first network function (NF) performs at least one of the following:

[0162] Upon receiving a first message from a second NF, a second message is sent to the access network device; wherein, the first message includes a non-access stratum NAS message sent by the second NF to the terminal, and / or, the first message is used to trigger the first NF to paging the terminal; the second message is used to paging the terminal, and the second message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF;

[0163] Upon receiving a third message from the access network device, a fourth message is sent to the access network device, wherein the third message is used to request information of the second NF, and the fourth message includes information of the second NF;

[0164] The second NF is any NF other than the NF that includes mobility management functionality.

[0165] In this application embodiment, an NF containing mobility management functionality refers to a network function, a network device, or a network node that possesses mobility management functionality. An NF containing mobility management functionality includes, but is not limited to, at least one of the following: a Mobility Management Function (MMF) resulting from the separation of 5G AMF, 6G AMF, or AMF into Access Management (AM) and Mobility Management (MM), wherein the MMF may further include other functions. A second NF is any NF other than the NF containing mobility management functionality; that is, a second NF that does not contain mobility management functionality, i.e., a second NF is not an NF such as 5G AMF, 6G AMF, or MMF.

[0166] Optionally, the first NF mentioned above is an NF that includes mobility management functions, that is, the first NF can be any of 5G AMF, 6G AMF or MMF, but the type of the first NF is not limited to this.

[0167] In this embodiment of the application, the first NF can send relevant information of the second NF to the access network device under different conditions.

[0168] In one optional implementation, upon receiving a first message from a second NF, the first NF carries a first identifier (the terminal corresponds to the terminal identifier of the second NF) in the paging message. The second NF sends a first message to the first NF to indicate that the second NF needs to send information to the terminal. Optionally, the first message can be a NAS message that the second NF needs to send to the terminal; that is, upon receiving a downlink NAS message from the second NF, the first NF sends a second message to the access network device. After receiving the first message, if the first NF finds that the terminal is in the CM_IDLE state, it will trigger the paging terminal process; that is, the first message can optionally be used to trigger the first NF to paging the terminal. Optionally, the first NF sends the aforementioned second message upon receiving a downlink NAS message from the second NF and finding that the terminal is in the CM_IDLE state.

[0169] It is understood that the aforementioned first message may include a Non-Access Stratum (NAS) message sent by the second NF to the terminal, and is used to trigger the first NF paging terminal. In an optional embodiment, the NAS message sent by the second NF to the terminal is used to trigger the first NF paging terminal.

[0170] In this embodiment of the application, the above-mentioned NAS message can also be described as NAS information or NAS signaling.

[0171] The aforementioned second message is used for paging terminals. The aforementioned first identifier includes the terminal identifier of the terminal corresponding to the second NF. That is, during the paging process of the first NF, the access network device is informed that the terminal identifier of the terminal corresponding to the second NF is the terminal identifier of the second NF, so that the access network device forwards this information to the terminal, thereby enabling the terminal to know that the reason for the current paging is that the second NF needs to perform data downlink, or enabling the terminal to know that the triggering NF of the current paging is the second NF, or enabling the terminal to know that the target NF of information transmission is the second NF.

[0172] Optionally, the method further includes: the first identifier comprising at least one of the following:

[0173] First NF set identifier, first NF pointer, second NF set identifier, second NF pointer, 6G temporary mobile identifier.

[0174] For example, when the first identifier is S-TMSI, the first identifier may include the following composition:

[0175] Method 1:

[0176] <AMF Set ID(10bit)+AMF Pointer(6bit)+6G-TMSI(32bit)>Wherein, AMF Set ID is the AMF set identifier (first NF set identifier), AMF Pointer is the AMF pointer (first NF pointer), and 6G-TMSI is the 6G temporary mobile subscriber identifier;

[0177] Method 2:

[0178] <NF Set ID(10bit)> +NF pointer(6bit)+6G-TMSI(32bit)>, where NF Set ID is the NF set identifier (second NF set identifier), NF pointer is the NF pointer (second NF pointer), and 6G-TMSI is the 6G temporary mobile subscriber identifier.

[0179] Optionally, the first message includes the first identifier.

[0180] In this embodiment of the application, the first identifier may be an identifier provided by the second NF to the first NF.

[0181] Optionally, the paging timing of the second message is the paging timing corresponding to the target identifier; the target identifier is one of a plurality of third identifiers possessed by the terminal, and different third identifiers are terminal identifiers of the terminal corresponding to different NFs, the plurality of third identifiers including at least one of the first identifier and the fourth identifier, the fourth identifier being the terminal identifier of the terminal corresponding to the first NF.

[0182] In this embodiment of the application, considering a distributed NAS architecture, a terminal can communicate with any NF (Network Function). The terminal has different terminal identifiers corresponding to different NFs. For example, the terminal identifier corresponding to the first NF (second S-TMSI), the terminal identifier corresponding to the second NF (first S-TMSI), the terminal identifier corresponding to the third NF (third S-TMSI), and so on. These multiple third identifiers can be understood as a set of terminal identifiers corresponding to different NFs, for example, {first S-TMSI, second S-TMSI, third S-TMSI, fourth S-TMSI, ...}. Optionally, the NF corresponding to the third identifier may include the first NF, the second NF, and / or other NFs (NFs other than the first and second NFs). Optionally, the multiple third identifiers include at least one of the first identifier and the fourth identifier, where the fourth identifier is the terminal identifier of the terminal corresponding to the first NF.

[0183] In related technologies, when the terminal side has terminal identifiers (multiple identifiers) corresponding to multiple network nodes (NFs), the terminal will listen for paging based on the paging timing corresponding to multiple identifiers, resulting in high terminal power consumption. In this embodiment, specifically, based on multiple identifiers, one (or some) of the multiple identifiers is determined to determine the paging timing, thereby reducing terminal power consumption. The determination of the target identifier can be based on protocol agreement or on instructions from network-side devices.

[0184] For example, such as Figure 6 As shown, a first S-TMSI (corresponding to the second NF) can be used as the first identifier. The first identifier includes the terminal identifier of the terminal corresponding to the second NF, so that the terminal knows that the current paging is paging itself and that the paging triggering node is the second NF. At the same time, the second S-TMSI (the S-TMSI corresponding to the AMF) can be determined as the target identifier, and the paging timing can be determined using the second S-TMSI.

[0185] In another optional implementation, the first NF provides the access network device with the information of the second NF based on the request message (third message) of the information of the second NF, so that the terminal knows that the target NF of the information transmission is the second NF.

[0186] Optionally, the information of the second NF includes at least one of the following:

[0187] Service type, NF type, NF identification information.

[0188] In this embodiment of the application, the access network device and / or terminal can determine the second NF based on at least one of the service type, NF type, and NF identification information. For example, a specific service type corresponds to a specific second NF, a specific NF type corresponds to a specific second NF, and specific NF identification information corresponds to a specific second NF.

[0189] For example, such as Figure 7 As shown in steps 5 and 6, the RAN (access network device) requests the second NF information (service type, NF type indication, or NF ID) from the AMF (first NF), and the AMF (first NF) feeds back (service type, NF type indication, or NF ID) to the terminal through the RAN (access network device).

[0190] Optionally, the first NF provides the access network device with the information of the second NF through the fourth message. This can be done without the first identifier being carried in the paging message (second message) sent by the first NF to the access network device (i.e., the regular paging procedure).

[0191] In one alternative approach, the first NF is in the message of the paging access network device (in the conventional paging process, such as...). Figure 7 Step 2 can carry information about the second NF (service type, NF type indication, or NF ID). In this case, the access network device does not need to request the information about the second NF from the first NF through the third message. That is, when the terminal requests the information about the second NF from the access network device based on the fifteenth message, the access network device can directly feed back the information about the second NF (service type, NF type indication, or NF ID) to the terminal.

[0192] It is understood that the sending of the second and fourth messages in step 501 above can be performed individually or in combination. That is, the first network function (NF) can perform either one of the following: upon receiving the first message sent by the second NF, it sends the second message to the access network device; or upon receiving the third message sent by the access network device, it sends the fourth message to the access network device. Alternatively, it can perform both of the above.

[0193] For ease of understanding, an example is provided, such as Figure 8 This illustrates two possible ways for the first NF to inform the terminal of the second NF:

[0194] In one implementation, in response to a first message sent by a second NF, the paging terminal (specifically via the second and eleventh messages) carries a first identifier during the paging process;

[0195] In another implementation, the first NF responds to a first message sent by the second NF and pagees the terminal (specifically via the sixteenth and fourteenth messages). This paging process can be understood as a regular paging process (without carrying the first identifier). After receiving the paging, the terminal requests information from the second NF to know which NF (second NF) initiated the paging or which NF (second NF) triggered the paging. In this implementation, one option is to carry the second NF information in the process of the first NF paging the access network device. In this case, when the terminal sends the fifteenth message requesting the second NF information, the access network device can directly provide the second NF information. Another option is that when the terminal sends the fifteenth message requesting the second NF information, the access network device requests the second NF information from the first NF via a third message, and the first NF provides the second NF information to the terminal through the access network device.

[0196] Optionally, the terminal is a terminal for service operations of environmental Internet of Things (AIoT) devices, and the service operations include at least one of the following: inventory, reading, and writing.

[0197] In this embodiment, the terminal involved can be referred to Figure 1 The terminal 11 shown is specifically designed to perform service operations on Ambient Internet of Things (AIoT) devices, such as inventory, read, and / or write operations. For example, the terminal could be a UE Reader. This terminal is for performing service operations on AIoT devices, specifically including inventory, read, and / or write operations.

[0198] In this application, the first NF sends either a second message or a fourth message to the access network device to inform the access network device (the access network device informs the terminal) of the relevant information of the second NF. This enables the terminal and the access network device to know that the target NF for the current data transmission is the second NF. Thus, in the distributed NAS framework, there are multiple NFs that can communicate directly with the terminal and do not contain mobility management functions. The terminal knows the communication target NF (the second NF) among the NFs that do not contain mobility management functions, making it possible for the terminal to communicate directly with other NFs other than those that contain mobility management functions. This reduces the detour of information transmission paths and reduces the load on NFs that contain mobility management functions.

[0199] In this embodiment, the terminal determines the second NF based on the first identifier. This can be achieved by the network-side device pre-assigning the first identifier to the terminal when the terminal is in a connected state, and the terminal storing the relationship between the first identifier and its corresponding NF.

[0200] In one alternative approach, the aforementioned first identifier is generated by the first NF, and allocation is performed (e.g., as an example). Figure 9 and Figure 10 (As shown).

[0201] Optionally, the method further includes:

[0202] When the terminal is in a connected state, the first NF performs at least one of the following:

[0203] Send a fifth message to the second NF, the fifth message including the first identifier;

[0204] A sixth message is sent to the access network device, the sixth message including the first identifier.

[0205] In this embodiment, the first NF generates a first identifier and assigns the first identifier to the access network device and / or the second NF. Optionally, when the second NF obtains the first identifier, the first identifier can be carried in the first message.

[0206] Optionally, the method further includes:

[0207] The first NF receives a seventh message sent by the second NF, the seventh message being used to request the first identifier.

[0208] In this embodiment of the application, the first NF generates a first identifier and provides the first identifier to the second NF based on the request of the second NF.

[0209] In an optional manner, the first NF generates a first identifier and assigns the first identifier to the second NF, which then provides the first identifier to the access network device. For example, the first identifier obtained by the access network device comes from the seventeenth message, rather than the sixth message.

[0210] In one alternative approach, the first identifier mentioned above is generated by the second NF, and allocation is performed (exemplary, such as...). Figure 9 and Figure 11 (As shown).

[0211] Optionally, the method further includes:

[0212] When the terminal is in a connected state, the first NF receives an eighth message sent by the second NF. The eighth message includes a second identifier, which is the terminal identifier of the terminal corresponding to the second NF.

[0213] In this embodiment, the second NF generates a second identifier and provides it to the first NF. The first NF can directly use the second identifier as the first identifier, or it can verify the second identifier and determine the verified second identifier as the first identifier.

[0214] In this embodiment of the application, the first NF can verify the second identifier (e.g., whether it is duplicated with the identifier generated by other NFs). If the verification passes (e.g., it is not duplicated with the identifier generated by other NFs), the second identifier is determined as the first identifier. If the verification fails, the second NF is instructed to regenerate and send the second identifier, or the first NF directly generates the first identifier and provides it to the second NF.

[0215] Optionally, the method further includes:

[0216] The first NF verifies the second identifier;

[0217] The first NF sends a ninth message to the second NF, the ninth message being used to indicate the verification result of the second identifier.

[0218] In this embodiment, the first NF may determine the verified second identifier as the first identifier when the second identifier is verified, and the first NF provides the first identifier to the access network device (tenth message); or the second NF may determine the verified second identifier as the first identifier when the ninth message indicates that the second identifier has been verified, and the second NF provides the first identifier to the access network device (eighteenth message).

[0219] Optionally, the method further includes: the first NF sending a tenth message to the access network device, the tenth message including a first identifier, the first identifier in the tenth message being determined based on a second identifier.

[0220] In this embodiment of the application, when the access network device obtains the first identifier through the sixth, seventeenth, tenth, or eighteenth messages, it sends the first identifier to the terminal through the thirteenth message. That is, when the terminal is in the connected state, it obtains the terminal identifier corresponding to the second NF and saves the correspondence between the first identifier and the second NF, for example, saving the correspondence between the first S-TMSI and the NF ID.

[0221] It is understandable that a terminal in connected mode can obtain terminal identifiers corresponding to multiple Functional Levels (NFs), such as the terminal identifier corresponding to the SMF (Sensing Function) or the terminal identifier corresponding to the Sensing Function (SF), thus enabling the terminal to obtain multiple third-party identifiers in connected mode. The generation and allocation process for terminal identifiers corresponding to different NFs (excluding NFs containing mobility management functions) can be found in [reference needed]. Figure 9 The process shown is as follows (i.e., different NFs can be used as the second NF to execute this process).

[0222] In this embodiment, the first network function (NF) performs at least one of the following: upon receiving a first message from a second NF, it sends a second message to the access network device; wherein the first message includes a NAS message sent by the second NF to the terminal, and / or, the first message is used to trigger the first NF to paging the terminal; the second message is used to paging the terminal, and the second message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF; upon receiving a third message from the access network device, it sends a fourth message to the access network device, the third message being used to request information from the second NF, the fourth message including information from the second NF; wherein, the second NF is an NF other than the NF containing mobility management functions. That is, when there is a data transmission requirement in an NF other than the NF containing mobility management functions, the access network device can directly obtain the relevant information of that NF, thereby enabling the terminal to communicate directly with that NF, thus reducing the detour of information transmission paths and reducing the load on the NF containing mobility management functions.

[0223] See Figure 12 , Figure 12 This is a flowchart of a communication method provided in an embodiment of this application, used for a terminal, such as... Figure 12 As shown, the method includes the following steps:

[0224] Step 1201: The terminal executes at least one of the following:

[0225] Receive an eleventh message sent by an access network device, wherein the eleventh message is used for paging a terminal, and the eleventh message includes a first identifier, the first identifier including a terminal identifier of the terminal corresponding to a second NF;

[0226] Receive the twelfth message sent by the access network device, the twelfth message including information of the second NF;

[0227] The second NF is any NF other than the NF that includes mobility management functionality.

[0228] In this embodiment, the terminal receives information from the access network device about other NFs besides the NF containing mobility management functions, so that the terminal knows the communication target NF (second NF). That is, in the distributed NAS framework, there are multiple other NFs besides the NF containing mobility management functions that can communicate directly with the terminal. The terminal knows the communication target NF (second NF) among the other NFs besides the NF containing mobility management functions, making it possible for the terminal to communicate directly with the other NFs besides the NF containing mobility management functions.

[0229] Optionally, the eleventh message sent by the receiving access network device includes:

[0230] Based on the paging listening timing corresponding to the target identifier, receive the eleventh message sent by the access network device;

[0231] The target identifier is one of a plurality of third identifiers possessed by the terminal, and different third identifiers are terminal identifiers of the terminal corresponding to different NFs; the plurality of third identifiers include at least one of the first identifier and the fourth identifier, and the fourth identifier is the terminal identifier of the terminal corresponding to the first NF.

[0232] In this embodiment, similar to the paging timing of the second message, the paging / listening timing of the eleventh message is also determined based on the target identifier among multiple third identifiers. The determination of the target identifier can be based on protocol agreements or on instructions from network-side devices.

[0233] Optionally, the method further includes:

[0234] When the terminal is in a connected state, it receives a thirteenth message sent by the access network device, the thirteenth message including a first identifier.

[0235] Optionally, the information of the second NF includes at least one of the following:

[0236] Service type, NF type, NF identification information.

[0237] Optionally, the method further includes:

[0238] Upon receiving the fourteenth message, the terminal sends a fifteenth message to the access network device. The fourteenth message is used to page the terminal, and the fifteenth message is used to request information from the second NF.

[0239] In this embodiment of the application, after receiving the paging message, the terminal may request the information of the second NF through the fifteenth message. That is, after receiving the paging message, the terminal may request to determine the triggering NF of the current paging through the fifteenth message, or it may request to determine the target network device that triggers the current paging through the fifteenth message.

[0240] Optionally, the method further includes:

[0241] The terminal determines the identifier of the second NF based on at least one of the eleventh and twelfth messages.

[0242] In this embodiment of the application, the terminal may obtain the relevant information of the second NF without using different messages. For example, the terminal identifier corresponding to the second NF may be obtained through the eleventh message, and the information of the second NF may be obtained through the twelfth message. The terminal may determine the second NF (e.g., the identifier of the second NF) based on the terminal identifier corresponding to the second NF and / or the information of the second NF.

[0243] Optionally, the terminal is a terminal for service operations of environmental Internet of Things (AIoT) devices, and the service operations include at least one of the following: inventory, reading, and writing.

[0244] It should be noted that this embodiment is as a comparison with... Figure 5-11 The embodiments shown in the diagram correspond to the implementation methods of the terminal. For specific implementation methods, please refer to [link / reference]. Figure 5-11 The relevant descriptions in the illustrated embodiments all achieve the same or similar beneficial effects. To avoid repetition, these descriptions will not be repeated in this embodiment.

[0245] See Figure 13 , Figure 13 This is a flowchart of a communication method provided in an embodiment of this application, used for access network devices, such as... Figure 13 As shown, the method includes the following steps:

[0246] Step 1301: The access network device performs at least one of the following:

[0247] Send an eleventh message to the terminal, wherein the eleventh message is used to page the terminal, and the eleventh message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF;

[0248] Send a twelfth message to the terminal; wherein the twelfth message is a response message to the fifteenth message, the fifteenth message is used to request information of the second NF, and the twelfth message includes information of the second NF;

[0249] The second NF is any NF other than the NF that includes mobility management functionality.

[0250] Optionally, the method further includes at least one of the following:

[0251] The access network device receives a second message sent by the first NF; wherein the second message is used for paging terminals and includes a first identifier;

[0252] The access network device receives a fourth message sent by the first NF; wherein the fourth message is a response message to the third message, the third message is used to request information from the second NF, and the fourth message includes information from the second NF.

[0253] Optionally, the twelfth message is determined based on the sixteenth message or based on the fourth message, wherein the sixteenth message is a paging message sent by the first NF to the access network device, and the sixteenth message is used for paging terminals.

[0254] Optionally, the method further includes:

[0255] The access network device receives a first identifier sent by the first NF or the second NF.

[0256] In this embodiment of the application, the access network device receives the first identifier from the first NF via the sixth message (first NF allocates a first identifier) ​​or the tenth message (second NF allocates a first identifier), or the access network device receives the first identifier from the second NF via the seventeenth message (first NF allocates a first identifier) ​​or the eighteenth message (second NF allocates a first identifier). Specifically, as follows... Figure 9 As shown, when the terminal is processing the connection state, the access network device receives a first identifier sent by the first NF or the second NF, and provides the first identifier to the terminal.

[0257] Optionally, the access network device sends a thirteenth message to the terminal, the thirteenth message including the first identifier.

[0258] Optionally, the paging timing of the eleventh message is the paging timing corresponding to the target identifier; the target identifier is one of a plurality of third identifiers possessed by the terminal, and different third identifiers are terminal identifiers of the terminal corresponding to different NFs, the plurality of third identifiers including at least one of the first identifier and the fourth identifier, the fourth identifier being the terminal identifier of the terminal corresponding to the NF containing mobility management functions.

[0259] It should be noted that this embodiment is as a comparison with... Figure 5-12 The implementation methods of the access network devices shown in the embodiments can be found in the following examples. Figure 5-12 The relevant descriptions in the illustrated embodiments all achieve the same or similar beneficial effects. To avoid repetition, these descriptions will not be repeated in this embodiment.

[0260] See Figure 14 , Figure 14 This is a flowchart of a communication method provided in an embodiment of this application, used for a second NF, such as... Figure 14 As shown, the method includes the following steps:

[0261] Step 1401: The second NF sends a first message to the first NF, the first message including a NAS message sent by the second NF to the terminal, and / or, the first message is used to trigger the first NF to paging the terminal;

[0262] The first message includes the first identifier, which includes the terminal identifier of the terminal corresponding to the second NF.

[0263] In this embodiment of the application, when the second NF needs to send a downlink message to the terminal, the first message is sent, and the terminal identifier corresponding to the second NF is carried in the first message, so that the terminal can know that the target NF of the information transmission is the second NF.

[0264] Optionally, when the terminal is in a connected state, the second NF performs at least one of the following:

[0265] Receive a fifth message sent by the first NF, the fifth message including the first identifier;

[0266] Send an eighth message to the first NF, the eighth message including a second identifier, the second identifier being the terminal identifier of the terminal corresponding to the second NF.

[0267] Optionally, the method further includes:

[0268] The second NF sends a seventh message to the first NF, the seventh message being used to request the first identifier.

[0269] Optionally, the method further includes: the second NF sending a seventeenth message to the access network device, the seventeenth message including a first identifier.

[0270] Optionally, the method further includes:

[0271] The second NF receives a ninth message sent by the first NF, the ninth message being used to indicate the verification result of the second identifier.

[0272] Optionally, the method further includes at least one of the following:

[0273] If the ninth message indicates verification failure or indicates rejection of the eighth message, the second NF sends an updated second identifier to the first NF;

[0274] If the ninth message indicates verification failure or indicates rejection of the eighth message, the second NF receives the fifth message sent by the first NF, the fifth message including the first identifier.

[0275] In this embodiment of the application, when the first NF fails to verify the second identifier (for example, it is determined that the second identifier is duplicated by an identifier allocated by another NF), it may instruct the second NF to reassign the second identifier, or the first NF may directly assign the first identifier to the second NF.

[0276] Optionally, the method further includes: the second NF sending an eighteenth message to the access network device, the eighteenth message including a first identifier, the first identifier in the eighteenth message being determined based on the second identifier.

[0277] Optionally, the method further includes: the first identifier comprising at least one of the following:

[0278] First NF set identifier, first NF pointer, 5G temporary mobile identifier, second NF set identifier, second NF pointer, 6G temporary mobile identifier.

[0279] It should be noted that this embodiment is as a comparison with... Figure 5-13 The implementation of the second NF corresponding to the illustrated embodiment can be found in the following examples. Figure 5-13 The relevant descriptions in the illustrated embodiments all achieve the same or similar beneficial effects. To avoid repetition, these descriptions will not be repeated in this embodiment.

[0280] For ease of understanding, several examples are provided below as optional implementation methods of this application.

[0281] In a specific example, the AMF is used as the first NF, and other NFs (hereinafter referred to as NFs) are used as the second NFs. The AMF or NF assigns the first S-TMSI of the UE corresponding to the NF. The NF triggers the AMF to send a paging message to the RAN, carrying the first S-TMSI and the second S-TMSI of the UE corresponding to the AMF (i.e., the S-TMSI used by the AMF to page the UE in related technologies, which is part of the globally unique temporary UE identity (5G-GUTI) assigned by the 5G GMF). The RAN carries the first S-TMSI in the paging message sent to the UE, which is used by the UE to determine the NF that triggered the paging.

[0282] To avoid power consumption caused by the UE listening for paging messages at multiple paging occupancy (PO) times corresponding to multiple S-TMSIs, the RAN and UE send and receive paging messages at a fixed PO corresponding to a single S-TMSI (Target Identifier). In this example, the second S-TMSI is selected as the fixed S-TMSI. It is understood that the S-TMSI corresponding to other NFs can also be used to determine the PO.

[0283] The technical solution also includes the allocation and composition method of S-TMSI for each NF.

[0284] (1) Distributed uniformly by AMF

[0285] (2) Allocation is handled by each NF itself.

[0286] The specific composition method is explained in Example 2.

[0287] Example 1: The process of a UE transitioning from an idle state to a connected state via an NF (Network Functions) triggered by an NF (Network Functions) - Method 1

[0288] Taking the process of a UE entering the connected state from the idle state by sending a downlink message from the NF (second NF) as an example, the paging message carries (includes) the first S-TMSI, which is used by the UE to determine the NF (second NF) that initiated the paging. Thus, the UE can send an uplink NAS to the corresponding NF and enter the connected state through the NF (second NF). For example, see the attached... Figure 6 As shown, the specific steps include the following:

[0289] Step 0: In connected mode, allocate the first S-TMSI corresponding to the NF to the UE. The UE enters idle mode. See Example 2 and Example 3 for the allocation process, or refer to [other resources]. Figure 9 The steps are shown. This embodiment is based on the assumption that the first S-TMSI has already been allocated to the UE.

[0290] Step 1: The NF needs to send a DL NAS and the first message (Namf_communication_N1N2Msg) to the AMF. If the UE is in CM_IDLE, the AMF will page the UE, which includes the UE's Subscription Permanent Identifier (SUPI) or the first S-TMSI. Optionally, Namf_communication_N1N2Msg also carries an N1 container, which contains the NAS message sent to the UE.

[0291] Optionally, the AMF sends a response message corresponding to the first message to the NF;

[0292] Step 2: The AMF uses the period of the second S-TMSI of the UE corresponding to the AMF to page the UE and sends a paging to the RAN in the registration area, carrying the second S-TMSI and the first S-TMSI.

[0293] Step 3: The RAN sends a Paging message containing the UE's first S-TMSI using the paging occasion (PO) corresponding to the second S-TMSI.

[0294] Step 4: The UE determines the paging listening opportunity (PO) based on the second S-TMSI (there is consensus between the UE and the RAN regarding the S-TMSI for determining the PO). When the UE has multiple S-TMSIs, the UE and the network need to determine the corresponding paging opportunity (PO) based on the same S-TMSI; otherwise, the UE would need to listen for paging messages at each paging opportunity corresponding to each S-TMSI, resulting in high UE power consumption. This embodiment uses the preferred example of the UE using the PO corresponding to the second S-TMSI to listen for paging messages for illustration.

[0295] In Embodiment 2 or Embodiment 3, the NF and UE can be dynamically configured to use which PO corresponding to the S-TMSI to page the UE, or the PO corresponding to the S-TMSI can be pre-defined.

[0296] Step 5: The UE determines the NF ID based on the first S-TMSI in the received paging message. In Embodiment 2 or Embodiment 3, the UE obtains the correspondence between the first S-TMSI and the NF ID when the first S-TMSI is assigned. Optionally, the UE updates the CM state to the connected state, or the UE updates the CM state to the connected state in step 10.

[0297] Step 6: The UE uses Radio Resource Control (RRC) messages to send an uplink NAS message (UL NAS) to the NF via the RAN. The uplink NAS message carries a globally unique temporary UE identity (NF Globally Unique Temporary UE Identity, NF GUTI) assigned by the 6G NF. Optionally, the RRC message also carries the NF ID.

[0298] Step 7: The RAN forwards the uplink NAS message to the NF through the message Nnf_NASTransport. The Nnf_NASTransport carries the UE's unique identifier within the RAN (RAN UE Identity, RAN UE ID), and the uplink NAS message carries the NFGUTI.

[0299] Step 8: The SMF notifies the AMF of the UE's serving RAN information (RAN UE ID) via the message Namf_communication_N1N2msg, and includes a downlink NAS message (DL NAS) to be sent to the UE. The DL NAS message carries the NF GUTI.

[0300] Step 9: The AMF sends a DL NAS message to the RAN via message N1msg.

[0301] It is understandable that when the NF sends the DL NAS message to the terminal, it can bypass the AMF; that is, steps 8-9 can be replaced by the NF directly sending the DL NAS to the RAN. The reason steps 8-9 send the DL NAS through the AMF is primarily to inform the AMF of the UE's serving RAN information in step 8.

[0302] Step 10: The RAN sends a DL NAS message to the UE via an RRC message. After receiving the DL NAS message, the UE updates the CM state to the connected state.

[0303] During the network-triggered UE entry into connected state process, the UE can enter connected state through NF, which solves the problems of AMF overload and NAS message path detour.

[0304] Example 2: AMF uniformly assigns paging identifiers corresponding to NF.

[0305] Example 1: The network carries the UE's first S-TMSI corresponding to the NF in the paging message sent to the UE. This is used by the UE to determine the NF ID that initiated the paging, so that the UE can send an uplink NAS to the corresponding NF and enter the connected state.

[0306] In this example, the AMF uniformly assigns the first S-TMSI corresponding to the NF for the UE and sends it to the UE and the NF. The first S-TMSI assigned in this embodiment is used in Example 1.

[0307] In 5G, for paging purposes, the network uses 5G-S-TMSI to page the UE. In the relevant technology standards, 5G S-TMSI is part of 5G-GUTI, consisting of the AMF Set ID, AMF Pointer, and 5G Temporary Mobility Identifier (5G-TMSI). Prior to 5G-S-TMSI, 5G-GUTI also includes the Mobile Country Code (MCC), Mobile Network Code (MNC), and AMF Region ID.

[0308] <5G-GUTI>:= <guami><5G-TMSI>

[0309] <guami> :＝ <mcc> <mnc><AMF Region ID><AMF Set ID><AMF Pointer>in <mcc> <mnc>PLMN ID

[0310] Composition of 5G-S-TMSI:<AMF Set ID(10bit)+AMF Pointer(6bit)+5G-TMSI(32bit)>

[0311] In optional mode 1 of this embodiment, the first S-TMSI corresponding to NF is composed as follows:

[0312] <AMF Set ID(10bit)+AMF Pointer(6bit)+6G-TMSI(32bit)>

[0313] The composition of the first S-TMSI is the same as in 5G technology, but the 6G-TMSI differs for different NFs. The method for generating 6G-TMSI can reuse the related technologies used in 5G to generate 5G-TMSI.

[0314] This embodiment may also have other configurations of the first S-TMSI. As an example, the possible configurations are as follows:

[0315] Optional methods:<NF Set ID(10bit)> +NF pointer(6bit)+6G-TMSI(32bit)>, in this mode, the encoding method of the S-TMSI corresponding to the NF refers to the design of the S-TMSI corresponding to the AMF. The PLMN ID and Region ID information to which the NF belongs are sent to the UE through other signaling, such as registration acceptance message, service acceptance message, Protocol Data Unit (PDU) session activation acceptance message or other separate messages.

[0316] Referring to the encoding of 5G-GUTI, for example, one encoding form of NF-GUTI can be:

[0317] <nf-guti>:=<NF ID> <6G-TMSI>

[0318] <NF ID> := <mcc> <mnc><NF Region ID><NF Set ID><NF Pointer>

[0319] This shows that the first S-TMSI corresponding to NF can be a part of the NF GUTI, combined with <mcc> <mnc><NF Region ID>The NF ID information can be obtained. When the UE first enters the connected state, the NF can assign an NF-GUTI to the UE and send it to the UE.

[0320] Taking the allocation of the first S-TMSI by the AMF and its transmission to the SMF and UE during the PDU session activation process as an example, it can be understood that the SMF can also be other NFs. For example, see attached... Figure 10 As shown, the specific steps include the following:

[0321] Step 0: The UE enters the connected state.

[0322] Step 1: The UE sends an RRC message to the RAN, carrying the NF ID and the UL NAS message for PDU session activation. Optionally, the ULNAS message carries the NF-GUTI.

[0323] Step 2: The RAN forwards the UL NAS message for PDU session activation to the SMF via the message Nsmf_NASTransport. The Nsmf_NASTransport message carries the RAN UE ID assigned by the RAN to the UE.

[0324] Step 3: The SMF requests the AMF to allocate the first S-TMSI corresponding to the UE of the SMF via the message Namf_communication_STMSIAssignment Request, carrying the UE's SUPI.

[0325] Step 4: The AMF sends the first S-TMSI of the UE corresponding to the SMF to the SMF via the message Namf_communication_STMSIAssignment Response. Optionally, the Namf_communication_STMSIAssignmentResponse carries the SUPI.

[0326] Step 5: The SMF requests the RAN to forward a PDU session activation response NAS message to the UE via the message Nsmf_NASTransport. Nsmf_NASTransport contains the RAN UE ID and the NAS message. The NAS message contains the UE's first S-TMSI. Optionally, the NAS message may also include the NF-GUTI.

[0327] Step 6: The RAN forwards the NAS message to the UE via an RRC message, which includes the UE's first S-TMSI.

[0328] Step 7: The UE obtains the NF ID information from the NF-GUTI and saves the correspondence between the first S-TMSI and the NF ID.

[0329] Note: After step 4, the AMF can also send the first S-TMSI to the UE. In this case, the SMF needs to send the RANUE ID to the AMF in step 3.

[0330] Example 3: Each NF assigns its own paging identifier corresponding to the NF.

[0331] Example 2 is that the AMF uniformly assigns the first S-TMSI corresponding to the NF for the UE and sends it to the UE and the NF.

[0332] In this example, each NF assigns its own first S-TMSI to the UE corresponding to that NF and sends it to the AMF and the UE. The composition of the first S-TMSI is the same as in Example 2.

[0333] Taking the allocation of the first S-TMSI by the SMF and its transmission to the AMF and UE in the PDU session activation process as an example, it can be understood that the SMF can also be other NFs. For example, refer to... Figure 11 The specific process is as follows:

[0334] Steps 0 to 2: Same as Example 2.

[0335] Step 3: The SMF allocates the first S-TMSI corresponding to the UE of the SMF and sends it to the AMF via Namf_communication_STMSITransfer, carrying the UE's SUPI.

[0336] Step 4: The AMF sends a response message to the SMF regarding the first S-TMSI transmission, carrying acceptance or rejection information. For example, if the AMF determines that there is a duplicate S-TMSI allocated by the SMF and other NFs, it sends a rejection message. After receiving the rejection message, the SMF can reallocate a different S-TMSI and send it to the AMF and UE.

[0337] Steps 5 to 7: Same as Example 2.

[0338] Example 3: Each NF allocates the first S-TMSI corresponding to the NF's UE, reducing the load on the AMF.

[0339] Optional, use option 2.<NF Set ID(10bit)> The formula `+NF pointer(6bit)+6G-TMSI(32bit)>` avoids the problem of duplicate first S-TMSIs assigned to different NFs by including the NF Set ID information in the first S-TMSI. In this case, step 4 above can be omitted.

[0340] Example 4: The process of a UE transitioning from an idle state to a connected state via an NF (Network Functions) triggered by an NF (Network Functions) - Method 2

[0341] Example 1: The NF triggers the AMF to use the UE's first S-TMSI to page the UE. After receiving the paging message, the UE sends a UL NAS message to the NF to enter the connected state.

[0342] This example demonstrates how an NF triggers an AMF to use S-TMSI to paging a UE. After receiving a paging message, the UE sends its S-TMSI to the RAN via an RRC message. The RAN then requests the NF information that triggered the paging from the AMF and sends the received NF information from the AMF back to the UE. The UE determines the NF ID based on the received NF information, sends a UL NAS message to the NF, and enters connected state. This allows the UE to enter connected state via the NF, reducing the load on the AMF.

[0343] For example, such as Figure 7 As shown, the specific process is as follows:

[0344] Step 1: The NF has downlink NAS messages that need to be sent to the UE. The AMF is triggered to initiate paging through the first message (Namf_communication_N1N2MessageTransfer). Optionally, the first message carries SUPI and N1 container. The N1 container contains the NAS messages to be sent to the UE.

[0345] Step 2: The AMF uses the UE's S-TMSI periodicity to page the UE and sends a paging message to the RAN, which may optionally carry the serviceType, NF type, or NF ID.

[0346] Step 3: The RAN determines the paging timing PO according to the UE's S-TMSI and sends a paging message.

[0347] Step 4: The UE listens for paging messages according to the PO corresponding to the UE's S-TMSI. If a match is found, the UE sends an RRC establishment request message to the RAN, carrying the S-TMSI.

[0348] Step 5: The RAN requests the NF information (service type or NF type or NF ID indication) to trigger paging from the AMF via the message Namf_communication_N1N2MessageTransfer.

[0349] Step 6: The RAN sends the NF information obtained from the AMF to the UE via the message RRCSetup.

[0350] Steps 7-10: Same as steps 6-9 in Embodiment 1 (wherein, the illustration shows the NF directly sending DL NAS messages to the RAN, and the DL NAS messages can be sent without going through the AMF).

[0351] In this embodiment, during the process of a UE entering the connected state triggered by a network (second NF), the UE can enter the connected state through the NF (second NF), solving the problems of heavy AMF load and NAS message path detour. In Example 1, the NF (second NF) triggers AMF paging of the UE, carrying a first S-TMSI in the paging message, which is used by the UE to determine the NF (second NF) that triggered the paging, so that the UE can enter the connected state through the NF (second NF).

[0352] See Figure 15 , Figure 15 This is a flowchart of a communication method provided in an embodiment of this application, used for a first NF, such as... Figure 15 As shown, the method includes the following steps:

[0353] Step 1501: The first network function (NF) sends the first identification information and the second identification information to the first communication node;

[0354] Wherein, the first identification information is used by the first communication node to determine the timing of sending the first broadcast message, and the second identification information is used by the first communication node to carry in the first broadcast message;

[0355] The second identification information indicates the first communication device or is identification information used by the first communication device. The first identification information is also used by the first communication device to determine the timing of receiving or listening to broadcast messages.

[0356] In this embodiment, it is considered that the terminal may have multiple terminal identifiers for determining the paging timing. For example, in a distributed NAS architecture, the terminal can communicate with any NF, and the terminal has different terminal identifiers (first S-TMSI, second S-TMSI) for different NFs. Another example is in the Ambient Internet of Things (AIoT) field, where the permanent identifier of an AIoT device is ID#1. The Ambient Internet of Things Function (AIoTF) sends a new temporary ID#2 generated based on ID#1 to the AIoT device. If the AIoT device fails to save ID#2, but the AIoTF does not receive a response, it does not know whether ID#2 has been used by the AIoT device. In this case, a device may also correspond to multiple terminal identifiers (ID#1 and ID#2). In related technologies, each identifier is used both to determine the paging timing and to identify the paging object. Assuming that the device performs paging based on the paging timing corresponding to each terminal identifier, it will lead to increased device power consumption.

[0357] Optionally, the first communication device is a terminal or an environmental Internet of Things (AIoT) device, and the first communication node is an access network node or a terminal.

[0358] In this embodiment of the application, the first communication node may be an access network node, an access network reader (RAN Reader), or a terminal reader (UE Reader), and the first communication device may be a terminal or an AIoT device.

[0359] Optionally, the first broadcast message includes at least one of the following: a paging message, a system information message, and an air interface short message;

[0360] And / or, the broadcast message includes at least one of the following: paging message, system information message, and air interface short message.

[0361] In this embodiment of the application, the aforementioned first broadcast message can be understood as a specific broadcast message sent by the first communication node, and the aforementioned broadcast message can be understood as various broadcast messages that the first communication device can listen to. The first broadcast message includes at least one of the following: paging message, system information message, and short message.

[0362] The first NF sends two identification information (first identification information and second identification information) to the first communication node. One of the identification information (first identification information) is used by the first communication node to determine the timing of sending the first broadcast message, and the first communication device to determine the timing of receiving or listening to the broadcast message. That is, the receiving and sending devices of the broadcast message reach a consensus on communicating at the timing corresponding to the first identification information. The other identification information (second identification information) carried in the first broadcast message is used to indicate the paging target.

[0363] In this embodiment of the application, when the terminal has multiple terminal identifiers, the timing for sending, receiving, or listening to broadcast messages is specifically determined by the first identifier information, thereby avoiding the device from sending or listening at the timing corresponding to each identifier, thus saving system energy consumption.

[0364] Optionally, the method further includes at least one of the following:

[0365] The first NF receives at least one of the first identification information and the second identification information from the second NF;

[0366] The first NF allocates or generates at least one of the first identification information and the second identification information for the first communication device.

[0367] In this embodiment of the application, the first identification information may be generated or configured by the first NF, or it may be generated or configured by the second NF and sent to the first NF; the second identification information may be generated or configured by the first NF, or it may be generated or configured by the second NF and sent to the first NF.

[0368] The aforementioned NF is a general term for all core network elements, and its type is not specifically limited in this application embodiment. This application embodiment uses the descriptions of the first NF and the second NF, which can be compared with... Figure 5-14 The first NF and the second NF in the embodiment correspond to each other, but may not be the same. Figure 5-14 In the embodiment, the first NF and the second NF correspond.

[0369] Optionally, the first identification information indicates the first communication device, or is identification information used by the first communication device.

[0370] In this embodiment, the aforementioned first identification information is used to determine the transmission timing, but it is essentially still the identification information of the first communication device and can be used to indicate the first communication device. Upon receiving the first and second identification information sent by the first NF, the first communication node can determine the transmission timing of the first broadcast message corresponding to the first communication device.

[0371] For example, such as Figure 16 As shown, in step 1, ID#2 can be a new ID generated based on ID#1 through encryption. ID#1 can be a permanent identifier or the identifier that was successfully saved and notified to AIoTF last time.

[0372] In step 2, the AIoTF (first NF) sends an inventory request to the RAN / UE Reader (first communication node), which carries ID#1 and ID#2 (first identification information and second identification information).

[0373] In step 3, the AIoT Device and RAN / UE Reader calculate the paging occasion (PO) based on ID#1.

[0374] In step 4, the RAN / UE Reader sends a paging message to the AIoT Device, carrying ID#2 (second identification information).

[0375] In step 5, if the AIoT Device successfully saves ID#2, it can directly determine whether it is paged itself. If it fails to save ID#2, it can use ID#1 to calculate ID#2 to determine whether it is paged itself, or decrypt ID#2 to obtain ID#1 to determine whether it is paged itself.

[0376] In step 6, if the AIoT Device determines that it is being paged, it sends an inventory response to the AIoTF, carrying ID#2.

[0377] In this embodiment, the first communication node determines the transmission timing of the first broadcast message based on the first identification information, and the first broadcast message carries the second identification information; the first communication node sends the first broadcast message based on the transmission timing; wherein, the second identification information indicates the first communication device, or is identification information used by the first communication device. When a terminal has multiple terminal identifiers, the transmission timing, reception, or listening timing of the broadcast message is specifically determined based on the first identification information, avoiding the device from transmitting or listening at each identifier's corresponding timing, thereby saving system energy consumption.

[0378] See Figure 17 , Figure 17 This is a flowchart of a communication method provided in an embodiment of this application, used for a first communication node, such as... Figure 17 As shown, the method includes the following steps:

[0379] Step 1701: The first communication node receives the first identification information and the second identification information from the first NF;

[0380] Step 1702: The first communication node determines the timing of sending the first broadcast message based on the first identification information, and the first broadcast message carries the second identification information;

[0381] Step 1703: The first communication node sends the first broadcast message based on the sending timing;

[0382] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0383] Optionally, the first identification information indicates the first communication device, or is identification information used by the first communication device.

[0384] Optionally, the first communication device is a terminal or an AIoT device, and the first communication node is an access network node or a terminal.

[0385] Optionally, the first broadcast message includes at least one of the following: a paging message, a system information message, or an air interface short message.

[0386] It should be noted that this embodiment is used as a reference for... Figure 15-16 The implementation method of the first communication node in the illustrated embodiment can be found in the following examples. Figure 15-16 The relevant descriptions in the illustrated embodiments all achieve the same or similar beneficial effects. To avoid repetition, these descriptions will not be repeated in this embodiment.

[0387] See Figure 18 , Figure 18 This is a flowchart of a communication method provided in an embodiment of this application, used for a first communication device, such as... Figure 18 As shown, the method includes the following steps:

[0388] Step 1801: The first communication device determines the timing for receiving or listening to the broadcast message based on the first identification information;

[0389] Step 1802: The first communication device receives or listens to the broadcast message based on the receiving or listening timing;

[0390] Step 1803: If the broadcast message includes the second identification information, the first communication device accepts and / or responds to the broadcast message;

[0391] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0392] Optionally, the first identification information indicates the first communication device, or is identification information used by the first communication device.

[0393] Optionally, the method further includes:

[0394] The first communication device receives at least one of the first identification information and the second identification information from the first NF; or,

[0395] The first communication device receives at least one of the first identification information and the second identification information from the second NF; or,

[0396] The first communication device receives the first identification information from the first NF and the second identification information from the second NF; or,

[0397] The first communication device receives the second identification information from the first NF and the first identification information from the second NF.

[0398] In this embodiment of the application, the first communication device obtains the first identification information and the second identification information from the NF device in advance, and uses them to determine the transmission timing and whether to send a message to itself during the broadcast message reception or listening process.

[0399] Optionally, the first communication device is a terminal or an AIoT device, and the first communication node is an access network node or a terminal.

[0400] Optionally, the broadcast message includes at least one of the following: paging message, system information message, and air interface short message.

[0401] It should be noted that this embodiment is used as a reference for... Figure 15-16 The implementation method of the first communication device corresponding to the illustrated embodiment can be found in the following examples. Figure 15-16 The relevant descriptions in the illustrated embodiments all achieve the same or similar beneficial effects. To avoid repetition, these descriptions will not be repeated in this embodiment.

[0402] The communication method provided in this application can be executed by a communication device. This application uses the example of a communication device executing the communication method to illustrate the communication device provided in this application.

[0403] This application provides a communication device. As an example, the communication device may be a communication equipment or a component within a communication equipment, such as a chip. The communication equipment may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0404] The communication device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0405] See Figure 19 When the communication device is a network-side device or a component within a network-side device, the communication device 1900 includes:

[0406] The first execution module 1901 includes:

[0407] A first sending module is configured to send a second message to an access network device upon receiving a first message sent by a second NF; wherein the first message includes a non-access stratum (NAS) message sent by the second NF to a terminal, and / or the first message is configured to trigger the communication device to page a terminal; the second message is configured to page a terminal, and the second message includes a first identifier, the first identifier including a terminal identifier of the terminal corresponding to the second NF;

[0408] The second sending module is configured to send a fourth message to the access network device upon receiving a third message from the access network device, wherein the third message is used to request information of the second NF, and the fourth message includes information of the second NF.

[0409] The second NF is any NF other than the NF that includes mobility management functionality.

[0410] Optionally, the device includes:

[0411] The second execution module is configured to execute at least one of the following when the terminal is in a connected state:

[0412] Send a fifth message to the second NF, the fifth message including the first identifier;

[0413] A sixth message is sent to the access network device, the sixth message including the first identifier.

[0414] Optionally, the device further includes:

[0415] The first receiving module is configured to receive a seventh message sent by the second NF, the seventh message being used to request the first identifier.

[0416] Optionally, the device includes:

[0417] The second receiving module is configured to receive an eighth message sent by the second NF when the terminal is in a connected state. The eighth message includes a second identifier, which is the terminal identifier of the terminal corresponding to the second NF.

[0418] Optionally, the device includes:

[0419] The verification module is used to verify the second identifier;

[0420] The third sending module is used to send a ninth message to the second NF, the ninth message being used to indicate the verification result of the second identifier.

[0421] Optionally, the device includes:

[0422] The fourth sending module is used to send a tenth message to the access network device. The tenth message includes a first identifier, and the first identifier in the tenth message is determined according to the second identifier.

[0423] The communication device provided in this application embodiment can achieve... Figures 5 to 11 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0424] For details, see Figure 20 When the communication device is a terminal or a component within a terminal, the communication device 2000 includes:

[0425] The third execution module 2001 includes at least one of the following:

[0426] The third receiving module is used to receive the eleventh message sent by the access network device, wherein the eleventh message is used to page the communication device, and the eleventh message includes a first identifier, the first identifier including the terminal identifier of the communication device corresponding to the second NF;

[0427] The fourth receiving module is used to receive the twelfth message sent by the access network device, the twelfth message including information of the second NF;

[0428] The second NF is any NF other than the NF that includes mobility management functionality.

[0429] Optionally, the third receiving module includes:

[0430] The first receiving submodule is used to receive the eleventh message sent by the access network device based on the paging listening time corresponding to the target identifier.

[0431] The target identifier is one of a plurality of third identifiers possessed by the terminal, and different third identifiers are terminal identifiers of the terminal corresponding to different NFs; the plurality of third identifiers include at least one of the first identifier and the fourth identifier, and the fourth identifier is the terminal identifier of the terminal corresponding to the first NF.

[0432] Optionally, the device further includes:

[0433] The fifth receiving module is used to receive the thirteenth message sent by the access network device when in a connected state, the thirteenth message including a first identifier.

[0434] Optionally, the device further includes:

[0435] The fifth sending module is used to send a fifteenth message to the access network device upon receiving the fourteenth message. The fourteenth message is used to page the terminal, and the fifteenth message is used to request information from the second NF.

[0436] Optionally, the device further includes:

[0437] The first determining module is configured to determine the identifier of the second NF based on at least one of the eleventh and twelfth messages.

[0438] The communication device provided in this application embodiment can achieve... Figures 5 to 12 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0439] See Figure 21 When the communication device is a network-side device or a component within a network-side device, the communication device 2100 includes:

[0440] The fourth execution module 2101 includes at least one of the following:

[0441] The sixth sending module is used to send an eleventh message to the terminal, wherein the eleventh message is used to page the terminal, and the eleventh message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF;

[0442] The seventh sending module is used to send a twelfth message to the terminal; wherein the twelfth message is a response message to the fifteenth message, the fifteenth message is used to request information of the second NF, and the twelfth message includes information of the second NF;

[0443] The second NF is any NF other than the NF that includes mobility management functionality.

[0444] Optionally, the device further includes:

[0445] The sixth receiving module is used to receive a second message sent by the first NF; wherein the second message is for a paging terminal and includes a first identifier;

[0446] The seventh receiving module is used to receive a fourth message sent by the first NF; wherein the fourth message is a response message to the third message, the third message is used to request information from the second NF, and the fourth message includes information from the second NF.

[0447] Optionally, the device further includes:

[0448] The eighth receiving module is used to receive the first identifier sent by the first NF or the second NF.

[0449] Optionally, the device further includes:

[0450] The eighth sending module is used to send a thirteenth message to the terminal, the thirteenth message including the first identifier.

[0451] The communication device provided in this application embodiment can achieve... Figures 5 to 13 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0452] See Figure 22 When the communication device is a network-side device or a component within a network-side device, the communication device 2200 includes:

[0453] The ninth sending module 2201 is used to send the first message to the first NF;

[0454] Wherein, the first message includes a NAS message sent by the communication device to the terminal, and / or, the first message is used to trigger the first NF paging terminal;

[0455] The first message includes a first identifier, which includes a terminal identifier corresponding to the communication device.

[0456] The communication device includes NFs other than those containing mobility management functions.

[0457] Optionally, the device further includes:

[0458] The fifth execution module is used to execute at least one of the following when the terminal is in a connected state:

[0459] Receive a fifth message sent by the first NF, the fifth message including the first identifier;

[0460] Send an eighth message to the first NF, the eighth message including a second identifier, the second identifier being the terminal identifier of the terminal corresponding to the communication device.

[0461] Optionally, the device further includes:

[0462] The tenth sending module is used to send a seventh message to the first NF, the seventh message being used to request the first identifier.

[0463] Optionally, the device further includes:

[0464] The eleventh sending module is used to send a seventeenth message to the access network device, the seventeenth message including a first identifier.

[0465] Optionally, the device further includes:

[0466] The ninth receiving module is used to receive the ninth message sent by the first NF, the ninth message being used to indicate the verification result of the second identifier.

[0467] Optionally, the device further includes at least one of the following:

[0468] The twelfth sending module is used to send an updated second identifier to the first NF if the ninth message indicates verification failure or indicates rejection of the eighth message;

[0469] The tenth receiving module is configured to receive the fifth message sent by the first NF when the ninth message indicates verification failure or indicates rejection of the eighth message, the fifth message including the first identifier.

[0470] Optionally, the device further includes:

[0471] The thirteenth sending module is used to send an eighteenth message to the access network device. The eighteenth message includes a first identifier, which is determined based on the second identifier.

[0472] The communication device provided in this application embodiment can achieve... Figures 5 to 14 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0473] See Figure 23 When the communication device is a network-side device or a component within a network-side device, the communication device 2200 includes:

[0474] The fourteenth sending module 2301 is used to send first identification information and second identification information to the first communication node;

[0475] Wherein, the first identification information is used by the first communication node to determine the timing of sending the first broadcast message, and the second identification information is used by the first communication node to carry in the first broadcast message;

[0476] The second identification information indicates the first communication device, or is identification information used by the first communication device. The first identification information is also used by the first communication device to determine the timing of receiving or listening to broadcast messages.

[0477] Optionally, the device further includes at least one of the following:

[0478] The eleventh receiving module is configured to receive at least one of the first identification information and the second identification information from the second NF;

[0479] A generation module is used to allocate or generate at least one of the first identification information and the second identification information for the first communication device.

[0480] The communication device provided in this application embodiment can achieve... Figures 15 to 16 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0481] See Figure 24 When the communication device is a network-side device or a component of a network-side device, or a terminal or a component of a terminal, the communication device 2400 includes:

[0482] The twelfth receiving module 2401 is used to receive first identification information and second identification information from the first NF;

[0483] The second determining module 2402 is used to determine the timing of sending the first broadcast message based on the first identification information, wherein the first broadcast message carries the second identification information;

[0484] The fifteenth sending module 2403 is used to send the first broadcast message based on the sending timing;

[0485] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0486] The communication device provided in this application embodiment can achieve... Figures 15 to 17 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0487] See Figure 25 When the communication device is a terminal or a component within a terminal, the communication device 2500 includes:

[0488] The third determining module 2501 is used to determine the timing of receiving or listening to the broadcast message based on the first identification information;

[0489] The thirteenth receiving module 2502 is used to receive or listen to the broadcast message based on the receiving or listening timing;

[0490] Response module 2503 is configured to accept and / or respond to the broadcast message if the broadcast message includes second identification information;

[0491] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0492] Optionally, the device includes:

[0493] The fourteenth receiving module is configured to receive at least one of the first identification information and the second identification information from the first NF; or...

[0494] The fifteenth receiving module is configured to receive at least one of the first identification information and the second identification information from the second NF; or...

[0495] The sixteenth receiving module is configured to receive the first identification information from the first NF and the second identification information from the second NF; or...

[0496] The tenth receiving module is used to receive the second identification information from the first NF and the first identification information from the second NF.

[0497] The communication device provided in this application embodiment can achieve... Figures 15 to 18 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0498] like Figure 26 As shown in the illustration, this application also provides a communication device 2600, including a processor 2601 and a memory 2602. The memory 2602 stores a program or instructions that can run on the processor 2601. For example, when the communication device 2600 is a terminal, the program or instructions executed by the processor 2601 implement the various steps of the above-described communication method embodiments and achieve the same technical effect. When the communication device 2600 is a network-side device, the program or instructions executed by the processor 2601 implement the various steps of the above-described communication method embodiments and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0499] This application embodiment also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 12 or Figure 17 or Figure 18 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be... Figure 20 or Figure 24 Or the communication device shown in Figure 25. Specifically, Figure 27 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0500] The terminal 2700 includes, but is not limited to, at least some of the following components: radio frequency unit 2701, network module 2702, audio output unit 2703, input unit 2704, sensor 2705, display unit 2706, user input unit 2707, interface unit 2708, memory 2709, and processor 2710.

[0501] Those skilled in the art will understand that the terminal 2700 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 2710 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 27 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0502] It should be understood that, in this embodiment, the input unit 2704 may include a graphics processor 27041 and a microphone 27042. The graphics processor 27041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 2706 may include a display panel 27061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 2707 includes at least one of a touch panel 27071 and other input devices 27072. The touch panel 27071 is also called a touch screen. The touch panel 27071 may include a touch detection device and a touch controller. Other input devices 27072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0503] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 2701 can transmit it to the processor 2710 for processing; in addition, the radio frequency unit 2701 can send uplink data to the network-side device. Typically, the radio frequency unit 2701 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0504] The memory 2709 can be used to store software programs or instructions, as well as various data. The memory 2709 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 2709 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 2709 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0505] Processor 2710 may include one or more processing units; optionally, processor 2710 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 2710.

[0506] The radio frequency unit 2701 is configured to perform at least one of the following:

[0507] Receive an eleventh message sent by an access network device, wherein the eleventh message is used for paging a terminal, and the eleventh message includes a first identifier, the first identifier including a terminal identifier of the terminal corresponding to a second NF;

[0508] Receive the twelfth message sent by the access network device, the twelfth message including information of the second NF;

[0509] The second NF is any NF other than the NF that includes mobility management functionality.

[0510] Alternatively, radio frequency unit 2701 is used to receive first identification information and second identification information from the first NF;

[0511] Processor 2710 is configured to determine the timing of sending a first broadcast message based on the first identification information, wherein the first broadcast message carries the second identification information;

[0512] Radio frequency unit 2701 is used to send the first broadcast message based on the transmission timing;

[0513] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0514] Alternatively, processor 2710 is used to determine the timing of receiving or listening to a broadcast message based on the first identification information;

[0515] Radio frequency unit 2701 is used to receive or listen to the broadcast message based on the receiving or listening timing;

[0516] Processor 2710 is configured to accept and / or respond to the broadcast message if the broadcast message includes second identification information;

[0517] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0518] It is understood that the implementation process of each implementation method mentioned in this embodiment can be referred to the method embodiment. Figure 12 or Figure 17 or Figure 18 The relevant descriptions and the achievement of the same or corresponding technical effects will not be repeated here to avoid duplication.

[0519] This application embodiment also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 5 , Figure 13 , Figure 14 , Figure 15 or Figure 17 The steps of the method embodiment shown are illustrated. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0520] Specifically, embodiments of this application also provide a network-side device, which can be... Figure 21 or Figure 24 The communication device shown. (As shown) Figure 28 As shown, the network-side device 2800 includes: an antenna 281, a radio frequency (RF) device 282, a baseband device 283, a processor 284, and a memory 285. The antenna 281 is connected to the RF device 282. In the uplink direction, the RF device 282 receives information through the antenna 281 and transmits the received information to the baseband device 283 for processing. In the downlink direction, the baseband device 283 processes the information to be transmitted and sends it to the RF device 282. The RF device 282 processes the received information and transmits it through the antenna 281.

[0521] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 283, which includes a baseband processor.

[0522] Baseband device 283 may include, for example, at least one baseband board on which multiple chips are disposed, such as Figure 28 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 285 via a bus interface to call the program or instructions in the memory 285 to execute the network-side device operations shown in the above method embodiments.

[0523] The network-side device may also include a network interface 286, such as a Common Public Radio Interface (CPRI).

[0524] The radio frequency device 282 performs at least one of the following:

[0525] Send an eleventh message to the terminal, wherein the eleventh message is used to page the terminal, and the eleventh message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF;

[0526] Send a twelfth message to the terminal; wherein the twelfth message is a response message to the fifteenth message, the fifteenth message is used to request information of the second NF, and the twelfth message includes information of the second NF;

[0527] The second NF is any NF other than the NF that includes mobility management functionality.

[0528] Alternatively, radio frequency device 282 is used to receive first identification information and second identification information from the first NF;

[0529] Processor 284 is configured to determine the timing of sending a first broadcast message based on the first identification information, wherein the first broadcast message carries the second identification information;

[0530] Radio frequency device 282 is used to send the first broadcast message based on the transmission timing;

[0531] The second identification information indicates the first communication device, or is identification information used by the first communication device.

[0532] Furthermore, the network-side device 2800 in this embodiment of the application also includes: a program or instructions stored in a memory 285 and executable on a processor 284, wherein the processor 284 calls the program or instructions in the memory 285 to execute. Figure 21 or Figure 24 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0533] Specifically, embodiments of this application also provide a network-side device. For example... Figure 29 As shown, the network-side device 2900 includes: a processor 2901, a network interface 2902, and a memory 2903. This network-side device can be... Figure 19 or Figure 22 or Figure 23 The communication device shown. The network interface 2902 is, for example, a common public radio interface (CPRI).

[0534] Network interface 2902 is used to perform at least one of the following:

[0535] Upon receiving a first message from a second NF, a second message is sent to the access network device; wherein, the first message includes a non-access stratum NAS message sent by the second NF to the terminal, and / or, the first message is used to trigger the first NF to paging the terminal; the second message is used to paging the terminal, and the second message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF;

[0536] Upon receiving a third message from the access network device, a fourth message is sent to the access network device, wherein the third message is used to request information of the second NF, and the fourth message includes information of the second NF;

[0537] The second NF is any NF other than the NF that includes mobility management functionality.

[0538] Alternatively, network interface 2902 is used for the first NF to send a first message, the first message including a NAS message sent by the second NF to the terminal, and / or, the first message is used to trigger the first NF to page the terminal;

[0539] The first message includes a first identifier, which includes the terminal identifier of the terminal corresponding to the second NF;

[0540] The second NF is any NF other than the NF that includes mobility management functionality.

[0541] Alternatively, network interface 2902 is used to send first identification information and second identification information to the first communication node;

[0542] Wherein, the first identification information is used by the first communication node to determine the timing of sending the first broadcast message, and the second identification information is used by the first communication node to carry in the first broadcast message;

[0543] The second identification information indicates the first communication device, or is identification information used by the first communication device. The first identification information is also used by the first communication device to determine the timing of receiving or listening to broadcast messages.

[0544] Furthermore, the network-side device 2900 in this embodiment of the application also includes: a program or instructions stored in a memory 2903 and executable on a processor 2901, wherein the processor 2901 calls the program or instructions in the memory 2903 to execute. Figure 19 or Figure 22 or Figure 23 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0545] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described communication method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0546] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0547] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described communication method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0548] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0549] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described communication method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0550] This application also provides a communication system, including: a first NF, a terminal, an access network device, and a second NF, wherein the first NF can be used to perform the above-described operations. Figure 5 The steps of the method shown are described above, and the terminal can be used to perform the actions described above. Figure 12 The steps of the method shown can be performed by the access network device as described above. Figure 13 The steps of the method shown above, the second NF described above can be used to perform the steps described above. Figure 14 The steps of the method shown.

[0551] This application also provides a communication system, including: a first NF, a first communication node, and a first communication device, wherein the first NF can be used to perform the above-described functions. Figure 15 The steps of the method shown are such that the first communication node can be used to perform the steps described above. Figure 17 The steps of the method shown, wherein the first communication device can be used to perform the steps described above. Figure 18 The steps of the method shown.

[0552] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one…" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0553] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0554] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.< / mnc> < / mcc> < / mnc> < / mcc> < / mnc> < / mcc> < / mnc> < / mcc> < / guami> < / guami>

Claims

1. A communication method, characterized in that, include: The first network function (NF) performs at least one of the following: Upon receiving a first message from a second NF, a second message is sent to the access network device; wherein, the first message includes a non-access stratum NAS message sent by the second NF to the terminal, and / or, the first message is used to trigger the first NF to paging the terminal; the second message is used to paging the terminal, and the second message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF; Upon receiving a third message from the access network device, a fourth message is sent to the access network device, wherein the third message is used to request information of the second NF, and the fourth message includes information of the second NF; The second NF is any NF other than the NF that includes mobility management functionality.

2. The method according to claim 1, characterized in that, The first message includes the first identifier.

3. The method according to claim 1 or 2, characterized in that, The method further includes: When the terminal is in a connected state, the first NF performs at least one of the following: Send a fifth message to the second NF, the fifth message including the first identifier; A sixth message is sent to the access network device, the sixth message including the first identifier.

4. The method according to claim 3, characterized in that, The method further includes: The first NF receives a seventh message sent by the second NF, the seventh message being used to request the first identifier.

5. The method according to claim 1 or 2, characterized in that, The method further includes: When the terminal is in a connected state, the first NF receives an eighth message sent by the second NF. The eighth message includes a second identifier, which is the terminal identifier of the terminal corresponding to the second NF.

6. The method according to claim 5, characterized in that, The method further includes: The first NF verifies the second identifier; The first NF sends a ninth message to the second NF, the ninth message being used to indicate the verification result of the second identifier.

7. The method according to claim 5 or 6, characterized in that, The method further includes: the first NF sending a tenth message to the access network device, the tenth message including a first identifier, the first identifier in the tenth message being determined according to a second identifier.

8. The method according to claim 1 or 2, characterized in that, The paging timing of the second message is the paging timing corresponding to the target identifier; the target identifier is one of a plurality of third identifiers possessed by the terminal, and different third identifiers are terminal identifiers of the terminal corresponding to different NFs, the plurality of third identifiers include at least one of the first identifier and the fourth identifier, and the fourth identifier is the terminal identifier of the terminal corresponding to the first NF.

9. The method according to claim 1, characterized in that, The information of the second NF includes at least one of the following: Service type, NF type, NF identification information.

10. The method according to any one of claims 1-9, characterized in that, The terminal is a terminal for service operations of environmental Internet of Things (AIoT) devices, and the service operations include at least one of the following: inventory, reading, and writing.

11. The method according to any one of claims 1-10, characterized in that, The first identifier includes at least one of the following: First NF set identifier, first NF pointer, second NF set identifier, second NF pointer, 6G temporary mobile identifier.

12. A communication method, characterized in that, include: The terminal executes at least one of the following: Receive an eleventh message sent by an access network device, wherein the eleventh message is used for paging a terminal, and the eleventh message includes a first identifier, the first identifier including a terminal identifier of the terminal corresponding to a second NF; Receive the twelfth message sent by the access network device, the twelfth message including information of the second NF; The second NF is any NF other than the NF that includes mobility management functionality.

13. The method according to claim 12, characterized in that, The eleventh message received from the access network device includes: Based on the paging listening timing corresponding to the target identifier, receive the eleventh message sent by the access network device; The target identifier is one of a plurality of third identifiers possessed by the terminal, and different third identifiers are terminal identifiers of the terminal corresponding to different NFs; the plurality of third identifiers include at least one of the first identifier and the fourth identifier, and the fourth identifier is the terminal identifier of the terminal corresponding to the first NF.

14. The method according to claim 12 or 13, characterized in that, The method further includes: When the terminal is in a connected state, it receives a thirteenth message sent by the access network device, the thirteenth message including a first identifier.

15. The method according to claim 12, characterized in that, The information of the second NF includes at least one of the following: Service type, NF type, NF identification information.

16. The method according to claim 12 or 15, characterized in that, The method further includes: Upon receiving the fourteenth message, the terminal sends a fifteenth message to the access network device. The fourteenth message is used to page the terminal, and the fifteenth message is used to request information from the second NF.

17. The method according to any one of claims 12-16, characterized in that, The method further includes: The terminal determines the identifier of the second NF based on at least one of the eleventh and twelfth messages.

18. The method according to any one of claims 12-17, characterized in that, The terminal is a terminal for service operations of environmental Internet of Things (AIoT) devices, and the service operations include at least one of the following: inventory, reading, and writing.

19. A communication method, characterized in that, include: Access network devices perform at least one of the following: Send an eleventh message to the terminal, wherein the eleventh message is used to page the terminal, and the eleventh message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF; Send a twelfth message to the terminal; wherein the twelfth message is a response message to the fifteenth message, the fifteenth message is used to request information of the second NF, and the twelfth message includes information of the second NF; The second NF is any NF other than the NF that includes mobility management functionality.

20. The method according to claim 19, characterized in that, The method further includes at least one of the following: The access network device receives a second message sent by the first NF; wherein the second message is used for paging terminals and includes a first identifier; The access network device receives a fourth message sent by the first NF; wherein the fourth message is a response message to the third message, the third message is used to request information from the second NF, and the fourth message includes information from the second NF.

21. The method according to claim 20, characterized in that, The twelfth message is determined based on the sixteenth message or based on the fourth message, wherein the sixteenth message is a paging message sent by the first NF to the access network device.

22. The method according to any one of claims 19-21, characterized in that, The method further includes: The access network device receives a first identifier sent by the first NF or the second NF.

23. The method according to claim 22, characterized in that, The method further includes: The access network device sends a thirteenth message to the terminal, the thirteenth message including the first identifier.

24. The method according to any one of claims 19-23, characterized in that, The paging timing of the eleventh message is the paging timing corresponding to the target identifier; the target identifier is one of a plurality of third identifiers possessed by the terminal, and different third identifiers are terminal identifiers corresponding to different NFs of the terminal, the plurality of third identifiers include at least one of the first identifier and the fourth identifier, and the fourth identifier is the terminal identifier of the terminal corresponding to the NF containing mobility management functions.

25. A communication method, characterized in that, include: The second NF sends a first message to the first NF, the first message including a NAS message sent by the second NF to the terminal, and / or the first message is used to trigger the first NF to paging the terminal; The first message includes a first identifier, which includes the terminal identifier of the terminal corresponding to the second NF; The second NF is any NF other than the NF that includes mobility management functionality.

26. The method according to claim 25, characterized in that, The method further includes, when the terminal is in a connected state, the second NF performing at least one of the following: Receive a fifth message sent by the first NF, the fifth message including the first identifier; Send an eighth message to the first NF, the eighth message including a second identifier, the second identifier being the terminal identifier of the terminal corresponding to the second NF.

27. The method according to claim 26, characterized in that, The method further includes: The second NF sends a seventh message to the first NF, the seventh message being used to request the first identifier.

28. The method according to claim 26 or 27, characterized in that, The method further includes: the second NF sending a seventeenth message to the access network device, the seventeenth message including a first identifier.

29. The method according to claim 26, characterized in that, The method further includes: The second NF receives a ninth message sent by the first NF, the ninth message being used to indicate the verification result of the second identifier.

30. The method according to claim 29, characterized in that, The method further includes at least one of the following: If the ninth message indicates verification failure or indicates rejection of the eighth message, the second NF sends an updated second identifier to the first NF; If the ninth message indicates verification failure or indicates rejection of the eighth message, the second NF receives the fifth message sent by the first NF, the fifth message including the first identifier.

31. The method according to any one of claims 26, 29-30, characterized in that, The method further includes: the second NF sending an eighteenth message to the access network device, the eighteenth message including a first identifier, the first identifier in the eighteenth message being determined based on the second identifier.

32. The method according to any one of claims 25-31, characterized in that, The method further includes: the first identifier comprising at least one of the following: First NF set identifier, first NF pointer, 5G temporary mobile identifier, second NF set identifier, second NF pointer, 6G temporary mobile identifier.

33. A communication method, characterized in that, include: The first network function (NF) sends first identification information and second identification information to the first communication node; Wherein, the first identification information is used by the first communication node to determine the timing of sending the first broadcast message, and the second identification information is used by the first communication node to carry in the first broadcast message; The second identification information indicates the first communication device, or is identification information used by the first communication device. The first identification information is also used by the first communication device to determine the timing of receiving or listening to broadcast messages.

34. The method according to claim 33, characterized in that, The method further includes at least one of the following: The first NF receives at least one of the first identification information and the second identification information from the second NF; The first NF allocates or generates at least one of the first identification information and the second identification information for the first communication device.

35. The method according to claim 33 or 34, characterized in that, The first identification information indicates the first communication device, or is identification information used by the first communication device.

36. The method according to any one of claims 33-35, characterized in that, The first communication device is a terminal or an environmental Internet of Things (AIoT) device, and the first communication node is an access network node or a terminal.

37. The method according to any one of claims 33-36, characterized in that, The first broadcast message includes at least one of the following: a paging message, a system information message, or an air interface short message; And / or, the broadcast message includes at least one of the following: paging message, system information message, and air interface short message.

38. A communication method, characterized in that, include: The first communication node receives first identification information and second identification information from the first NF; The first communication node determines the timing of sending the first broadcast message based on the first identification information, and the first broadcast message carries the second identification information; The first communication node sends the first broadcast message based on the specified sending timing; The second identification information indicates the first communication device, or is identification information used by the first communication device.

39. The method according to claim 38, characterized in that, The first identification information indicates the first communication device, or is identification information used by the first communication device.

40. The method according to claim 38 or 39, characterized in that, The first communication device is a terminal or an AIoT device, and the first communication node is an access network node or a terminal.

41. The method according to any one of claims 38-40, characterized in that, The first broadcast message includes at least one of the following: a paging message, a system information message, or an air interface short message.

42. A communication method, characterized in that, include: The first communication device determines the timing for receiving or listening to broadcast messages based on the first identification information; The first communication device receives or listens to the broadcast message based on the receiving or listening timing; The first communication device accepts and / or responds to the broadcast message if the broadcast message includes the second identification information; The second identification information indicates the first communication device, or is identification information used by the first communication device.

43. The method according to claim 42, characterized in that, The first identification information indicates the first communication device, or is identification information used by the first communication device.

44. The method according to claim 42 or 43, characterized in that, The method further includes: The first communication device receives at least one of the first identification information and the second identification information from the first NF; or, The first communication device receives at least one of the first identification information and the second identification information from the second NF; or, The first communication device receives the first identification information from the first NF and the second identification information from the second NF; or, The first communication device receives the second identification information from the first NF and the first identification information from the second NF.

45. The method according to any one of claims 42-44, characterized in that, The first communication device is a terminal or an AIoT device, and the first communication node is an access network node or a terminal.

46. ​​The method according to any one of claims 42-45, characterized in that, The broadcast message includes at least one of the following: paging message, system information message, and air interface short message.

47. A communication device, characterized in that, include: The first execution module includes: A first sending module is configured to send a second message to an access network device upon receiving a first message sent by a second NF; wherein the first message includes a non-access stratum (NAS) message sent by the second NF to a terminal, and / or the first message is configured to trigger the communication device to page a terminal; the second message is configured to page a terminal, and the second message includes a first identifier, the first identifier including a terminal identifier of the terminal corresponding to the second NF; The second sending module is configured to send a fourth message to the access network device upon receiving a third message from the access network device, wherein the third message is used to request information of the second NF, and the fourth message includes information of the second NF. The second NF is any NF other than the NF that includes mobility management functionality.

48. The apparatus according to claim 47, characterized in that, The device includes: The second execution module is configured to execute at least one of the following when the terminal is in a connected state: Send a fifth message to the second NF, the fifth message including the first identifier; A sixth message is sent to the access network device, the sixth message including the first identifier.

49. The apparatus according to claim 48, characterized in that, The device further includes: The first receiving module is configured to receive a seventh message sent by the second NF, the seventh message being used to request the first identifier.

50. The apparatus according to claim 47, characterized in that, The device includes: The second receiving module is configured to receive an eighth message sent by the second NF when the terminal is in a connected state. The eighth message includes a second identifier, which is the terminal identifier of the terminal corresponding to the second NF.

51. The apparatus according to claim 50, characterized in that, The device includes: The verification module is used to verify the second identifier; The third sending module is used to send a ninth message to the second NF, the ninth message being used to indicate the verification result of the second identifier.

52. The apparatus according to claim 50 or 51, characterized in that, The device includes: The fourth sending module is used to send a tenth message to the access network device. The tenth message includes a first identifier, and the first identifier in the tenth message is determined according to the second identifier.

53. A communication device applied to a terminal, characterized in that, include: The third execution module includes at least one of the following: The third receiving module is used to receive the eleventh message sent by the access network device, wherein the eleventh message is used to page the communication device, and the eleventh message includes a first identifier, the first identifier including the terminal identifier of the communication device corresponding to the second NF; The fourth receiving module is used to receive the twelfth message sent by the access network device, the twelfth message including information of the second NF; The second NF is any NF other than the NF that includes mobility management functionality.

54. The apparatus according to claim 53, characterized in that, The third receiving module includes: The first receiving submodule is used to receive the eleventh message sent by the access network device based on the paging listening time corresponding to the target identifier. The target identifier is one of a plurality of third identifiers possessed by the terminal, and different third identifiers are terminal identifiers of the terminal corresponding to different NFs; the plurality of third identifiers include at least one of the first identifier and the fourth identifier, and the fourth identifier is the terminal identifier of the terminal corresponding to the first NF.

55. The apparatus according to claim 53 or 54, characterized in that, The device further includes: The fifth receiving module is used to receive the thirteenth message sent by the access network device when in a connected state, the thirteenth message including a first identifier.

56. The apparatus according to claim 53, characterized in that, The device further includes: The fifth sending module is used to send a fifteenth message to the access network device upon receiving the fourteenth message. The fourteenth message is used to page the terminal, and the fifteenth message is used to request information from the second NF.

57. The apparatus according to any one of claims 53-56, characterized in that, The device further includes: The first determining module is configured to determine the identifier of the second NF based on at least one of the eleventh and twelfth messages.

58. A communication device, characterized in that, include: The fourth execution module includes at least one of the following: The sixth sending module is used to send an eleventh message to the terminal, wherein the eleventh message is used to page the terminal, and the eleventh message includes a first identifier, the first identifier including the terminal identifier of the terminal corresponding to the second NF; The seventh sending module is used to send a twelfth message to the terminal; wherein the twelfth message is a response message to the fifteenth message, the fifteenth message is used to request information of the second NF, and the twelfth message includes information of the second NF; The second NF is any NF other than the NF that includes mobility management functionality.

59. The apparatus according to claim 58, characterized in that, The device further includes: The sixth receiving module is used to receive a second message sent by the first NF; wherein the second message is for a paging terminal and includes a first identifier; The seventh receiving module is used to receive a fourth message sent by the first NF; wherein the fourth message is a response message to the third message, the third message is used to request information from the second NF, and the fourth message includes information from the second NF.

60. The apparatus according to claim 58 or 59, characterized in that, The device further includes: The eighth receiving module is used to receive the first identifier sent by the first NF or the second NF.

61. The apparatus according to claim 60, characterized in that, The device further includes: The eighth sending module is used to send a thirteenth message to the terminal, the thirteenth message including the first identifier.

62. A communication device, characterized in that, include: The ninth sending module is used to send the first message to the first NF; Wherein, the first message includes a NAS message sent by the communication device to the terminal, and / or, the first message is used to trigger the first NF paging terminal; The first message includes a first identifier, which includes a terminal identifier corresponding to the communication device. The communication device includes NFs other than those containing mobility management functions.

63. The apparatus according to claim 62, characterized in that, The device further includes: The fifth execution module is used to execute at least one of the following when the terminal is in a connected state: Receive a fifth message sent by the first NF, the fifth message including the first identifier; Send an eighth message to the first NF, the eighth message including a second identifier, the second identifier being the terminal identifier of the terminal corresponding to the communication device.

64. The apparatus according to claim 63, characterized in that, The device further includes: The tenth sending module is used to send a seventh message to the first NF, the seventh message being used to request the first identifier.

65. The apparatus according to claim 63 or 64, characterized in that, The device further includes: The eleventh sending module is used to send a seventeenth message to the access network device, the seventeenth message including a first identifier.

66. The apparatus according to claim 63, characterized in that, The device further includes: The ninth receiving module is used to receive the ninth message sent by the first NF, the ninth message being used to indicate the verification result of the second identifier.

67. The apparatus according to claim 66, characterized in that, The device further includes at least one of the following: The twelfth sending module is used to send an updated second identifier to the first NF if the ninth message indicates verification failure or indicates rejection of the eighth message; The tenth receiving module is configured to receive the fifth message sent by the first NF when the ninth message indicates verification failure or indicates rejection of the eighth message, the fifth message including the first identifier.

68. The apparatus according to any one of claims 63, 66-67, characterized in that, The device further includes: The thirteenth sending module is used to send an eighteenth message to the access network device. The eighteenth message includes a first identifier, which is determined based on the second identifier.

69. A communication device, characterized in that, include: The fourteenth sending module is used to send first identification information and second identification information to the first communication node; Wherein, the first identification information is used by the first communication node to determine the timing of sending the first broadcast message, and the second identification information is used by the first communication node to carry in the first broadcast message; The second identification information indicates the first communication device, or is identification information used by the first communication device. The first identification information is also used by the first communication device to determine the timing of receiving or listening to broadcast messages.

70. The apparatus according to claim 69, characterized in that, The device further includes at least one of the following: The eleventh receiving module is configured to receive at least one of the first identification information and the second identification information from the second NF; The generation module is used to allocate or generate at least one of the first identification information and the second identification information for the first communication device.

71. A communication device, characterized in that, include: The twelfth receiving module is used to receive first identification information and second identification information from the first NF; The second determining module is used to determine the timing of sending the first broadcast message based on the first identification information, wherein the first broadcast message carries the second identification information; The fifteenth sending module is used to send the first broadcast message based on the sending timing; The second identification information indicates the first communication device, or is identification information used by the first communication device.

72. A communication device, characterized in that, include: The third determining module is used to determine the timing of receiving or listening to broadcast messages based on the first identification information; The thirteenth receiving module is used to receive or listen to the broadcast message based on the receiving or listening timing; A response module is configured to accept and / or respond to the broadcast message if the broadcast message includes second identification information; The second identification information indicates the first communication device, or is identification information used by the first communication device.

73. The apparatus according to claim 72, characterized in that, The device includes: The fourteenth receiving module is configured to receive at least one of the first identification information and the second identification information from the first NF; or... The fifteenth receiving module is configured to receive at least one of the first identification information and the second identification information from the second NF; or... The sixteenth receiving module is configured to receive the first identification information from the first NF and the second identification information from the second NF; or... The tenth receiving module is used to receive the second identification information from the first NF and the first identification information from the second NF.

74. A terminal, characterized in that, The device includes a processor and a memory, the memory storing a program or instructions executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the communication method as described in any one of claims 12 to 18, or, when executed by the processor, the program or instructions implement the steps of the communication method as described in any one of claims 38 to 41, or, when executed by the processor, the program or instructions implement the steps of the communication method as described in any one of claims 42 to 46.

75. A network-side device, characterized in that, The device includes a processor and a memory, the memory storing a program or instructions executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the communication method as described in any one of claims 1 to 11; or, the program or instructions, when executed by the processor, implement the steps of the communication method as described in any one of claims 19 to 24; or, the program or instructions, when executed by the processor, implement the steps of the communication method as described in any one of claims 25 to 32; or, the program or instructions, when executed by the processor, implement the steps of the communication method as described in any one of claims 33 to 37; or, the program or instructions, when executed by the processor, implement the steps of the communication method as described in any one of claims 38 to 41.

76. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the communication method as described in any one of claims 1-11, or implement the steps of the communication method as described in any one of claims 12-18, or implement the steps of the communication method as described in any one of claims 19-24, or implement the steps of the communication method as described in any one of claims 25-32, or implement the steps of the communication method as described in any one of claims 33-37, or implement the steps of the communication method as described in any one of claims 38-41, or implement the steps of the communication method as described in any one of claims 42-46.

77. A computer program product, characterized in that, The computer program product is stored in a storage medium and is executed by at least one processor to implement the steps of the communication method as described in any one of claims 1 to 11, or the steps of the communication method as described in any one of claims 12 to 18, or the steps of the communication method as described in any one of claims 19 to 24, or the steps of the communication method as described in any one of claims 25 to 32, or the steps of the communication method as described in any one of claims 33 to 37, or the steps of the communication method as described in any one of claims 38 to 41, or the steps of the communication method as described in any one of claims 42 to 46.

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