Information interaction method, device and equipment

Abstract

The invention discloses an information interaction method, device and equipment, and belongs to the technical field of communication, and the information interaction method comprises the steps that a third network function receives first information from a second network function; and the third network function sends second information to the second network function based on the first information, so that the second network function executes related operations of session association and / or identification association.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to an information interaction method, apparatus, and device. Background Art

[0002] Some terminals can establish multiple sessions with the network side simultaneously. For example, a DualSteer Device can establish two sessions using one Subscription Permanent Identifier (SUPI), or can also establish two sessions with the network side using two SUPIs.

[0003] However, there is currently no corresponding technical solution for how to associate two sessions established by the same terminal device using two user identifiers. Summary of the Invention

[0004] Embodiments of this application provide an information interaction method, apparatus, and device to solve the problem of how to associate two sessions established by the same terminal device using two user identifiers.

[0005] In a first aspect, an information interaction method is provided, including:

[0006] A third network function receives first information from a second network function;

[0007] The third network function sends second information to the second network function based on the first information;

[0008] Wherein, the first information includes any one of the following:

[0009] A third identifier;

[0010] A third identifier and at least one of the following: first session information, first identifier association information, second session information, registration indication or location update indication, deregistration indication or location cancellation indication;

[0011] Wherein, the second information includes at least one of the following:

[0012] Third information;

[0013] Fourth information;

[0014] Wherein, the third information includes at least one of the following:

[0015] Second identifier association information;

[0016] Dual registration indication or multi-registration indication;

[0017] Wherein, the fourth information includes at least one of the following:

[0018] Third session information;

[0019] Fourth session information;

[0020] Fifth session information;

[0021] First session association information;

[0022] Information related to the fourth network function;

[0023] Wherein, the fourth session information indicates at least one of the session information of allowed, accepted, and subscribed;

[0024] Wherein, the fifth session information indicates the session information of not allowed or rejected.

[0025] In a second aspect, an information interaction method is provided, including:

[0026] The second network function sends first information to the third network function;

[0027] The second network function receives second information sent by the third network function;

[0028] The second network function performs a first operation based on the second information;

[0029] Wherein, the first operation includes at least one of the following:

[0030] Sending the second information to the first network function;

[0031] Sending fifth information to the fourth network function;

[0032] Performing session association;

[0033] Performing identification association;

[0034] Wherein, the first information includes any one of the following:

[0035] Third identifier;

[0036] The third identifier and at least one of the following: first session information, first identification association information, second session information, registration indication or location update indication, deregistration indication or location cancellation indication;

[0037] Wherein, the fifth information includes at least one of the following:

[0038] Information related to the sixth network function, the sixth network function being related to the third identifier;

[0039] Third identifier association information;

[0040] Second session association information.

[0041] In a third aspect, an information interaction method is provided, including:

[0042] A fourth network function receives fifth information sent by a second network function;

[0043] The fourth network function performs a second operation based on the fifth information:

[0044] Wherein, the second operation includes at least one of the following:

[0045] Perform session association;

[0046] Perform identity association.

[0047] In a fourth aspect, an information interaction method is provided, including:

[0048] The second network function sends first information to a third network function, where the first information is used to indicate a third identifier or information associated with the third identifier;

[0049] The third network function sends second information to the second network function, where the second information is used to perform session association and / or perform identity association;

[0050] The second network function performs a first operation based on the second information;

[0051] Wherein, the first operation includes at least one of the following:

[0052] Send the second information to a first network function;

[0053] Send fifth information to a fourth network function for performing session association and / or performing identity association;

[0054] Perform session association;

[0055] Perform identity association.

[0056] In a fifth aspect, a network-side device is provided. The network-side device includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in any one of the first aspect, the second aspect, and the third aspect are implemented.

[0057] In a sixth aspect, a network-side device is provided, including a processor and a communication interface. Wherein, the communication interface is used to receive first information from a second network function and send second information to the second network function based on the first information;

[0058] Wherein, the first information includes any one of the following:

[0059] A third identifier;

[0060] a third identifier and at least one of the following: first session information, first identifier association information, second session information, a registration indication or a location update indication, a deregistration indication or a location cancellation indication;

[0061] wherein the second information includes at least one of the following:

[0062] third information;

[0063] fourth information;

[0064] wherein the third information includes at least one of the following:

[0065] second identifier association information;

[0066] a dual registration indication or a multiple registration indication;

[0067] wherein the fourth information includes at least one of the following:

[0068] third session information;

[0069] fourth session information;

[0070] fifth session information;

[0071] first session association information;

[0072] information related to a fourth network function;

[0073] wherein the fourth session information indicates at least one of allowed, accepted, and subscribed session information;

[0074] wherein the fifth session information indicates disallowed or rejected session information.

[0075] In a seventh aspect, a network-side device is provided, including a processor and a communication interface. The communication interface is configured to send first information to a third network function and receive second information sent by the third network function; the processor is configured to perform a first operation based on the second information;

[0076] wherein the first operation includes at least one of the following:

[0077] sending the second information to a first network function;

[0078] sending fifth information to a fourth network function;

[0079] performing session association;

[0080] performing identifier association;

[0081] wherein the first information includes any one of the following:

[0082] The third identifier;

[0083] The third identifier and at least one of the following: the first session information, the first identifier association information, the second session information, the registration indication or the location update indication, the deregistration indication or the location cancellation indication;

[0084] Wherein, the fifth information includes at least one of the following:

[0085] The related information of the sixth network function, where the sixth network function is related to the third identifier;

[0086] The third identifier association information;

[0087] The second session association information.

[0088] In an eighth aspect, a network-side device is provided, including a processor and a communication interface. Wherein, the communication interface is used to receive the fifth information sent by the second network function; the processor is used to perform a second operation based on the fifth information:

[0089] Wherein, the second operation includes at least one of the following:

[0090] Perform session association;

[0091] Perform identifier association.

[0092] In a ninth aspect, a communication system is provided, including: a second network function and a third network function. The second network function can be used to execute the steps of the information interaction method described in the second aspect, and the third network function can be used to execute the steps of the information interaction method described in the first aspect.

[0093] In a tenth aspect, a readable storage medium is provided. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, the steps of the method described in any one of the first aspect, the second aspect and the third aspect are implemented.

[0094] In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement the method described in any one of the first aspect, the second aspect and the third aspect.

[0095] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the steps of the method described in any one of the first aspect, the second aspect and the third aspect.

[0096] In the embodiments of the present application, since after the third network function receives the first information including the third identifier, it can send second information to the second network function based on the first information to inform the second network function whether relevant judgment information for session association or identifier association can be performed, enabling the second network function to perform at least one of session association and identifier association by itself, or the second network function to trigger the fourth network function to perform at least one of session association and identifier association, thereby realizing the association of different sessions and / or different identifiers of the same terminal device. Brief Description of the Drawings

[0097] Figure 1 is a block diagram of a wireless communication system provided by an embodiment of the present application.

[0098] Figure 2 is a schematic flowchart of an information interaction method provided by an embodiment of the present application.

[0099] Figure 3 is a schematic flowchart of an information interaction method provided by another embodiment of the present application.

[0100] Figure 4 is a schematic flowchart of an information interaction method provided by another embodiment of the present application.

[0101] Figure 5 is a schematic flowchart of an information interaction method provided by Specific Embodiment 1 of the present application.

[0102] Figure 6 is a schematic flowchart of an information interaction method provided by Specific Embodiment 2 of the present application.

[0103] Figure 7 is a schematic flowchart of an information interaction method provided by Specific Embodiment 3 of the present application.

[0104] Figure 8 is a schematic flowchart of an information interaction method provided by an embodiment of the present application.

[0105] Figure 9 is a schematic structural diagram of an information interaction device provided by an embodiment of the present application.

[0106] Figure 10 is a schematic structural diagram of an information interaction device provided by another embodiment of the present application.

[0107] Figure 11 is a schematic structural diagram of a communication device of the present application.

[0108] Figure 12 Hardware structural diagram of the terminal in the embodiments of the present application.

[0109] Figure 13 Schematic diagram of the hardware structure of the network-side device according to an embodiment of the present application. Detailed implementation manners

[0110] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. According to the embodiments in the present application, every other embodiment obtained by those of ordinary skill in the art shall fall within the protection scope of the present application.

[0111] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same type, and the number of objects is not limited. For example, the first access object can be one or multiple. In addition, the "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0112] It should be noted that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, and 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), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as the 6th Generation (6G) communication system. th Generation, 6G) communication system.

[0113] Figure 1 The block diagram of a wireless communication system to which the embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 01 and a network-side device 02. Among them, the terminal 01 can be a mobile phone, a tablet personal computer, a laptop computer or a notebook computer, a personal digital assistant (PDA), a palm computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), a game console, a personal computer (PC), a teller machine or a self-service machine, etc. The wearable device includes: a smart watch, a smart bracelet, a smart earphone, a smart glasses, smart jewelry (smart bracelet, smart bracelet, smart ring, smart necklace, smart anklet, smart ankle chain, etc.), a smart wristband, a smart clothing, etc. It should be noted that the specific type of the terminal 01 is not limited in the embodiments of the present application. The network-side device 02 may include an access network device or a core network device. Among them, the access network device 02 may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function or a radio access network unit. The access network device 02 may include a base station, a WLAN access point or a WiFi node, etc. The base station may be referred to as a Node B, an evolved Node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B, a home evolved Node B, a transmitting and receiving point (TRP) or some other suitable term in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical term. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0114] In order to solve the problem of how to associate two sessions established by the same terminal device using two user identifiers, the embodiment of the present application proposes an information interaction method, apparatus and device, which are described in detail below with reference to the accompanying drawings.

[0115] The terminal equipment (User Equipment, UE) involved in the embodiments of the present application refers to a terminal equipment having at least one of dual registration, dual connection, dual access, multi-access, multi-registration and multi-connection capabilities. For example, the terminal equipment involved in the embodiments of the present application may be a dual-boot device (DualSteer Device). A dual-boot device is a device with capabilities such as dual registration and dual-path transmission. The dual-boot device may include two terminal equipment (Terminal Equipment, TE): TE1 and TE2. TE has similar functions to UE and can also be regarded as a UE, specifically as a modem (Modem) of the UE. Alternatively, the dual-boot device can also be regarded as a UE, which includes at least an independent modem and an independent SIM card.

[0116] The network elements involved in the embodiments of the present application include a first network function, a second network function, a third network function, a fourth network function, a fifth network function, a sixth network function and a ninth network function.

[0117] In the case where the network access situation of the terminal device includes any one of 4G network and 5G network dual access, 5G network dual access, 4G network and 5G network dual registration, 5G network dual registration, 4G network and 5G network dual connection, 5G network dual connection, etc., exemplary:

[0118] The first network function may include: a second mobility and access management entity (Access and MobilityManagement Function, AMF) or a second mobility management entity (Mobile Management Entity, MME).

[0119] The second network function may include: a second session management function (Session Management Function, SMF).

[0120] The third network function may include: Unified Data Management (UDM).

[0121] The fourth network function may include: a first SMF.

[0122] The fifth network function may include: a first AMF or a first MME.

[0123] The sixth network function may include: a first MME or a first AMF.

[0124] The ninth network function may include at least one of an access network node and a core network function. Among them, the access network node may be, for example, the Next Generation Radio Access Network (NG-RAN) of 5G, and the core network function may be the AMF.

[0125] It should be noted that the above descriptions of the first network function, the second network function, the third network function, the fourth network function, the fifth network function, the sixth network function, and the ninth network function are only examples. In some cases, the specific names of these network functions may change, and the specific situation shall be subject to the relevant embodiments in the following text.

[0126] First, a method for information interaction proposed in an embodiment of the present application will be described below.

[0127] First, as a prerequisite, a method for information interaction proposed in an embodiment of the present application may include: the ninth network function performs any one of the following:

[0128] 1) Broadcasting the fourth indication information;

[0129] 2) Sending the fourth indication information to the terminal device.

[0130] Among them, the fourth indication information indicates at least one of the following:

[0131] Supporting context merging, supporting session merging, supporting registration mode conversion, supporting switchover, supporting steering, supporting splitting.

[0132] Among them, the ninth network function includes any one of the following:

[0133] An access network node, a core network function.

[0134] Among them, the registration mode conversion includes: converting from a single registration mode to a dual registration mode, converting from a dual registration mode to a single registration mode, and so on.

[0135] Among them, the ninth network function may be at least one of an access network function and a core network function. For example, when the access network of the terminal device is a 5G network, the ninth network function may be the NG-RAN of 5G, and the fourth indication information may be broadcast by the 5G NG-RAN; or, the ninth network function may be the AMF, and correspondingly, the fourth indication information may be sent by the AMF to the terminal device.

[0136] Further, as Figure 2 shown, a method for information interaction proposed in an embodiment of the present application may include:

[0137] Step 201: The third network function receives the first information from the second network function.

[0138] Among them, the second network function may be the second SMF, and the third network function may specifically be the UDM.

[0139] Among them, the first information may include at least one of the following:

[0140] The third identifier;

[0141] The third identifier and at least one of the following: the first session information, the first identifier association information, the second session information, the registration indication or the location update indication, the deregistration indication or the location cancellation indication.

[0142] As an example, the third identifier may include at least one of the following:

[0143] The first Subscriber Permanent Identifier (SUPI), such as SUPI1;

[0144] The first International Mobile Subscriber Identity (IMSI), such as IMSI1.

[0145] As an example, the first information may be sent by the second network function after receiving a pair of session information from the first network function (such as AMF2). The pair of session information is sent to the second network function by the first network function after receiving a PDU session establishment request from the terminal device and establishing a second session based on the third identifier carried in the session establishment request.

[0146] The session information involved in the embodiments of the present application may include at least one of the following: Data Network Name (DNN), Single Network Slice Selection Assistance Information (S-NSSAI), Access Point Name (APN), Protocol Data Unit (PDU) Session ID, Evolved Packet System (EPS) Bearer ID, and Session ID.

[0147] As an example, the sixth session information may include: PDU session ID = #2, (DNN2, S-NSSAI2), SUPI2, PDU session pair information.

[0148] Step 202, the third network function sends second information to the second network function based on the first information.

[0149] Wherein, the second information includes at least one of the following:

[0150] Third information;

[0151] Fourth information.

[0152] Wherein, the third information includes at least one of the following:

[0153] Second identification association information;

[0154] Dual registration indication or multi-registration indication.

[0155] Wherein, the fourth information includes at least one of the following:

[0156] Third session information;

[0157] Fourth session information;

[0158] Fifth session information;

[0159] First session association information;

[0160] Relevant information of the fourth network function.

[0161] For example, as Figure 5 shown, the UDM (i.e., the third network function) executes step 5 to query the SUPI1 associated with the fourth identifier (SUPI2), the (DNN1, S-NSSAI1) associated with (DNN2, S-NSSAI2), and the relevant information of the corresponding SMF1, and sends the second information including the SUPI1 (i.e., the second identification association information) and the relevant information of the SMF1 (i.e., the fourth network function) to the SMF2 (i.e., the second network function) by executing step 6.

[0162] Wherein, the fourth session information indicates at least one of the session information of allowed, accepted, and subscribed.

[0163] Wherein, the fifth session information indicates the session information of not allowed or rejected.

[0164] It should be noted that in the embodiments of the present application, the session information in the first session information, the second session information, the third session information, the fourth session information, the fifth session information, the sixth session information, and the seventh session information may include at least one of the following: DNN, S-NSSAI, APN, PDU session ID, EPS bearer ID, and session ID. However, these information in different session information may be different. That is to say, the first session information, the second session information, the third session information, the fourth session information, the fifth session information, the sixth session information, and the seventh session information may be session information including different DNNs, different S-NSSAIs, different EPS bearer IDs, etc., respectively, corresponding to indicating multiple sessions.

[0165] It should also be noted that any one of the above-mentioned first session information, second session information, third session information, fourth session information, fifth session information, sixth session information, and seventh session information may include a session information list, that is, the relevant information of multiple sessions may be included in any one of the above-mentioned session information.

[0166] Optionally, the first identification association information includes a fourth identifier, and / or the second identification association information includes a fifth identifier, and the fifth identifier is related to the third identifier. For example, the fifth identifier is the SUPI associated with the third identifier.

[0167] Optionally, the third identifier is different from the fourth identifier, and / or the third identifier is different from the fifth identifier.

[0168] Wherein, the fourth identifier includes at least one of the following:

[0169] Second SUPI;

[0170] Second IMSI;

[0171] Wherein, the fifth identifier includes at least one of the following:

[0172] Third SUPI;

[0173] Third IMSI.

[0174] In some embodiments, the fourth network function is related to at least one of the following:

[0175] At least one of the second session information and the second session indicated by the second session information;

[0176] At least one of the third session information and the third session indicated by the third session information;

[0177] At least one of the fourth session information and the fourth session indicated by the fourth session information.

[0178] In some other embodiments, the fourth network function is related to at least one of the following:

[0179] At least one of the fourth identifier and the terminal device indicated by the fourth identifier;

[0180] At least one of the fifth identifier and the terminal device indicated by the fifth identifier.

[0181] Wherein, the first session association information includes at least one of the following:

[0182] IP address information;

[0183] Transport address information;

[0184] Association ID;

[0185] A pair of session information including the sixth session information and the seventh session information.

[0186] Wherein, the relevant information of the fourth network function may include at least one of the following: SMF ID, Fully Qualified Domain Name (FQDN), IP address, etc.

[0187] Optionally, Figure 2 The method shown may further include:

[0188] The third network function determines the third information based on the first information and the subscription information;

[0189] The third network function determines the fourth information based on the first information and the subscription information;

[0190] Wherein, the subscription information is related to at least one of the third identifier, the fourth identifier, and the fifth identifier.

[0191] Specifically, the third network function can obtain the third information through the third identifier and the subscription information corresponding to the third identifier, or can obtain the fifth identifier, and then obtain the third information through the subscription information corresponding to the fifth identifier, or synthesize the third information through the subscription information of the third identifier and the subscription information of the fifth identifier.

[0192] Figure 2An information interaction method provided by the illustrated embodiment. Since the third network function can, after receiving the first information containing the third identifier, send the second information to the second network function based on the first information to inform the second network function of relevant judgment information for session association or identifier association, enabling the second network function to perform at least one of session association and identifier association by itself, or the second network function to trigger the fourth network function to perform at least one of session association and identifier association, thereby realizing the association of different sessions and / or different identifiers of the same terminal device.

[0193] As Figure 3 shown, an information interaction method proposed in another embodiment of the present application may include:

[0194] Step 301, the second network function sends the first information to the third network function.

[0195] Step 302, the second network function receives the second information sent by the third network function.

[0196] Step 303, the second network function performs a first operation based on the second information.

[0197] Wherein, the first operation includes at least one of the following:

[0198] 1) Sending the second information to the first network function;

[0199] 2) Sending the fifth information to the fourth network function;

[0200] 3) Performing session association;

[0201] 4) Performing identifier association.

[0202] Wherein, the first information includes any one of the following:

[0203] The third identifier;

[0204] The third identifier and at least one of the following: the first session information, the first identifier association information, the second session information, the registration indication or location update indication, the deregistration indication or location cancellation indication.

[0205] Wherein, the fifth information includes at least one of the following:

[0206] Relevant information of the sixth network function, the sixth network function being related to the third identifier;

[0207] The third identifier association information;

[0208] The second session association information.

[0209] Among them, the sixth network function may be the second AMF or the second MME. The fact that the sixth network function is related to the third identifier specifically refers to serving the terminal device indicated by the third identifier or the AMF or MME, or sending the third identifier to the second network function AMF or MME.

[0210] Among them, the third identifier includes at least one of the following:

[0211] The first SUPI;

[0212] The first IMSI.

[0213] Among them, the second information includes at least one of the following:

[0214] The third information;

[0215] The fourth information.

[0216] Among them, the third information includes at least one of the following:

[0217] The first identifier association information;

[0218] The dual registration indication or the multi-registration indication.

[0219] Among them, the fourth information includes at least one of the following:

[0220] The third session information;

[0221] The fourth session information;

[0222] The fifth session information;

[0223] The first session association information;

[0224] The relevant information of the fourth network function.

[0225] Among them, the fourth session information indicates at least one of the allowed, accepted, and subscribed session information;

[0226] Among them, the fifth session information indicates the disallowed or rejected session information.

[0227] Optionally, the first identifier association information includes a fourth identifier, and the fourth identifier is received from the sixth network function; and / or, the third identifier association information includes a fifth identifier.

[0228] Optionally, the fifth identifier is different from the third identifier, and / or, the third identifier is different from the fourth identifier.

[0229] Among them, the fourth identifier includes at least one of the following:

[0230] The second SUPI;

[0231] The second IMSI,

[0232] wherein, the fifth identifier includes at least one of the following:

[0233] The third SUPI;

[0234] The third IMSI.

[0235] In some embodiments, if the fifth information includes second session association information, and the second session association information includes: the first session information and the second session information, then performing session association in the above first operation includes at least one of the following:

[0236] Associating the first session information and the second session information, or, associating the first session indicated by the first session information and the second session indicated by the second session information;

[0237] Assigning the same IP address or transmission address to the first session indicated by the first session information and the second session indicated by the second session information;

[0238] Assigning the same IP address or transmission address to the terminal device related to the first session information and the terminal device related to the second session information.

[0239] Among them, the terminal device related to the first session information includes, for example, the terminal device that creates the first session, the terminal device that sends the first session information, the terminal device indicated by the third identifier, etc., and the terminal device related to the second session information includes, for example, the terminal device that creates the second session, the terminal device that sends the second session information, the terminal device indicated by the fourth identifier, etc.

[0240] In other embodiments, if the fifth information includes second session association information, and the second session association information includes at least one of the following:

[0241] The first session information and the third session information;

[0242] The first session information and the fourth session information.

[0243] Then, performing session association in the above first operation includes at least one of the following:

[0244] Associating the first session information and the third session information, or, associating the first session indicated by the first session information and the third session indicated by the third session information;

[0245] Assigning the same IP address or transmission address to the first session indicated by the first session information and the third session indicated by the third session information;

[0246] Assign the same IP address or transmission address to the terminal device associated with the first session information and the terminal device associated with the third session information;

[0247] Associate the first session information and the fourth session information, or associate the first session indicated by the first session information and the fourth session indicated by the fourth session information;

[0248] Assign the same IP address to the first session indicated by the first session information and the fourth session indicated by the fourth session information;

[0249] Assign the same IP address or transmission address to the terminal device associated with the first session information and the terminal device associated with the fourth session information.

[0250] Among them, the terminal device associated with the third session information includes, for example, the terminal device that creates the third session, the terminal device indicated by the fifth identifier or the fourth identifier, etc., and the terminal device associated with the fourth session information includes, for example, the terminal device that creates the fourth session, the terminal device indicated by the fourth identifier or the fifth identifier, etc.

[0251] In some other embodiments, if the fifth information includes second session association information, and the third identifier association information includes at least one of the following:

[0252] The third identifier and the fourth identifier;

[0253] The third identifier and the fifth identifier.

[0254] Then, the identifier association in the above first operation includes at least one of the following:

[0255] Associate the third identifier and the fourth identifier, or associate the terminal device indicated by the third identifier and the terminal device indicated by the fourth identifier;

[0256] Associate the third identifier and the fifth identifier, or associate the terminal device indicated by the third identifier and the terminal device indicated by the fifth identifier.

[0257] Among them, the session association information includes at least one of the following:

[0258] IP address information;

[0259] Transmission address information;

[0260] Association ID;

[0261] A pair of session information including the sixth session information and the seventh session information.

[0262] Among them, the session information includes at least one of the following:

[0263] Data Network Name DNN;

[0264] Single Network Slice Selection Assistance Information S-NSSAI;

[0265] Access Point Name APN;

[0266] Protocol Data Unit PDU session ID;

[0267] Evolved Packet System EPS bearer ID;

[0268] Session ID.

[0269] Figure 3 An information interaction method provided by the illustrated embodiment. Since the second network function can determine whether to perform session association and / or identity association based on the second information after receiving the second information sent by the third network function, and perform the association of the corresponding session and / or the corresponding identity when association is required, it is possible to realize the association of different sessions and / or different identities of the same terminal device.

[0270] As Figure 4 shown, an information interaction method provided by another embodiment of the present application may include:

[0271] Step 401, the fourth network function receives the fifth information sent by the second network function.

[0272] Step 402, the fourth network function performs a second operation based on the fifth information.

[0273] Wherein, the second operation includes at least one of the following:

[0274] Perform session association;

[0275] Perform identity association.

[0276] Wherein, the fifth information may include at least one of the following:

[0277] Relevant information of the sixth network function;

[0278] Third identity association information;

[0279] Second session association information.

[0280] Wherein, the third identity association information may include at least one of the following:

[0281] Third identifier and fourth identifier;

[0282] Third identifier and fifth identifier.

[0283] Among them, the second session association information may include at least one of the following:

[0284] The first session information and the second session information;

[0285] The first session information and the third session information;

[0286] The first session information and the fourth session information.

[0287] In some embodiments, if the fifth information includes the second session association information, then the session association in the second operation may include:

[0288] Associating the first session information and the second session information, or associating the first session indicated by the first session information and the second session indicated by the second session information;

[0289] Assigning the same IP address or transmission address to the first session indicated by the first session information and the second session indicated by the second session information;

[0290] Assigning the same IP address or transmission address to the terminal device associated with the first session information and the terminal device associated with the second session information;

[0291] Associating the first session information and the third session information, or associating the first session indicated by the first session information and the third session indicated by the third session information;

[0292] Assigning the same IP address to the first session indicated by the first session information and the third session indicated by the third session information;

[0293] Assigning the same IP address or transmission address to the terminal device associated with the first session information and the terminal device associated with the third session information;

[0294] Associating the first session information and the fourth session information, or associating the first session indicated by the first session information and the fourth session indicated by the fourth session information;

[0295] Assigning the same IP address to the first session indicated by the first session information and the fourth session indicated by the fourth session information;

[0296] Assigning the same IP address or transmission address to the terminal device associated with the first session information and the terminal device associated with the fourth session information.

[0297] In some embodiments, if the fifth information includes the third identification association information, then the session association in the second operation may include:

[0298] Associate the third identifier with the fourth identifier, or associate the terminal device indicated by the third identifier with the terminal device indicated by the fourth identifier;

[0299] Associate the third identifier with the fifth identifier, or associate the terminal device indicated by the third identifier with the terminal device indicated by the fifth identifier.

[0300] Optionally, in the third identifier association information, the third identifier is different from the fourth identifier, or the third identifier is different from the fifth identifier.

[0301] Wherein, the third identifier includes at least one of the following:

[0302] The first Subscriber Permanent Identifier (SUPI);

[0303] The first International Mobile Subscriber Identity (IMSI).

[0304] Wherein, the fourth identifier includes at least one of the following:

[0305] The second SUPI;

[0306] The second IMSI.

[0307] Wherein, the fifth identifier includes at least one of the following:

[0308] The third SUPI;

[0309] The third IMSI.

[0310] Wherein, the session information includes at least one of the following:

[0311] Data Network Name (DNN);

[0312] Single Network Slice Selection Assistance Information (S-NSSAI);

[0313] Access Point Name (APN);

[0314] Protocol Data Unit (PDU) session ID;

[0315] Evolved Packet System (EPS) bearer ID;

[0316] Session ID.

[0317] Optionally, Figure 4 The method shown may further include: the fourth network function indicating the association result information to the sixth network function, and returning a response as Figure 5 or Figure 6 shown in.

[0318] Figure 4An information interaction method provided by the illustrated embodiment, since after the fourth network function receives the fifth information sent by the second network function, it can determine whether to perform session association and / or identity association according to the fifth information, and when association is required, perform the association of the corresponding session and / or the association of the corresponding identity, so that the association of different sessions and / or different identities of the same terminal device can be realized.

[0319] The above has introduced an information interaction method proposed in this application from the perspectives of the second network function, the third network function, and the fourth network function respectively. Next, an information interaction method proposed in this application will be described from the perspective of the interaction of each network function.

[0320] In one embodiment, an information interaction method provided by this application may include:

[0321] Step 1, the second network function sends the first information to the third network function, and the first information is used to indicate the third identifier or the information associated with the third identifier.

[0322] Step 2, the third network function sends the second information to the second network function, and the second information is used to perform session association and / or identity association.

[0323] Step 3, the second network function performs the first operation based on the second information.

[0324] Wherein, the first information includes any one of the following:

[0325] The third identifier;

[0326] The third identifier and at least one of the following: the first session information, the first identity association information, the second session information, the registration indication or the location update indication, the deregistration indication or the location cancellation indication.

[0327] As an example, the third identifier may include at least one of the following:

[0328] The first Subscription Permanent Identifier (SUPI), such as SUPI1;

[0329] The first International Mobile Subscriber Identity (IMSI), such as IMSI1.

[0330] Wherein, the second information includes at least one of the following:

[0331] The third information;

[0332] The fourth information.

[0333] Wherein, the third information includes at least one of the following:

[0334] Second identifier association information;

[0335] Dual registration indication or multi-registration indication.

[0336] Optionally, the first identifier association information includes a fourth identifier, and / or the second identifier association information includes a fifth identifier, and the fifth identifier is related to the third identifier, for example, the fifth identifier is the SUPI associated with the third identifier.

[0337] Optionally, the third identifier is different from the fourth identifier, and / or the third identifier is different from the fifth identifier.

[0338] Wherein, the fourth identifier includes at least one of the following:

[0339] Second SUPI;

[0340] Second IMSI;

[0341] Wherein, the fifth identifier includes at least one of the following:

[0342] Third SUPI;

[0343] Third IMSI.

[0344] Wherein, the fourth information includes at least one of the following:

[0345] Third session information;

[0346] Fourth session information;

[0347] Fifth session information;

[0348] First session association information;

[0349] Information related to the fourth network function, such as SMF ID, Fully Qualified Domain Name (FQDN), IP address, etc.

[0350] In some embodiments, the fourth network function is related to at least one of the following:

[0351] At least one of the second session information and the second session indicated by the second session information;

[0352] At least one of the third session information and the third session indicated by the third session information;

[0353] At least one of the fourth session information and the fourth session indicated by the fourth session information.

[0354] In some other embodiments, the fourth network function is related to at least one of the following:

[0355] At least one of the fourth identifier and the terminal device indicated by the fourth identifier;

[0356] At least one of the fifth identifier and the terminal device indicated by the fifth identifier.

[0357] Optionally, an information interaction method provided in an embodiment of the present application may further include:

[0358] The third network function determines the third information based on the first information and the subscription information;

[0359] The third network function determines the fourth information based on the first information and the subscription information;

[0360] Wherein, the subscription information is related to at least one of the third identifier, the fourth identifier, and the fifth identifier.

[0361] Specifically, the third network function may obtain the third information through the third identifier and the subscription information corresponding to the third identifier, or may obtain the fifth identifier, and then obtain the third information through the subscription information corresponding to the fifth identifier, or synthesize the third information through the subscription information of the third identifier and the subscription information of the fifth identifier.

[0362] Wherein, the first session association information includes at least one of the following:

[0363] IP address information;

[0364] Transport address information;

[0365] Association ID;

[0366] A session information pair including sixth session information and seventh session information.

[0367] Wherein, the fourth session information indicates at least one of allowed, accepted, and subscribed session information.

[0368] Wherein, the fifth session information indicates session information that is not allowed or rejected.

[0369] Wherein, the fifth information includes at least one of the following:

[0370] Information related to the sixth network function;

[0371] Third identifier association information;

[0372] Second session association information.

[0373] Wherein, the third identifier association information includes at least one of the following:

[0374] The third identifier and the fourth identifier;

[0375] The third identifier and the fifth identifier.

[0376] Wherein, the second session association information includes at least one of the following:

[0377] The first session information and the second session information;

[0378] The first session information and the third session information;

[0379] The first session information and the fourth session information.

[0380] Wherein, the first operation includes at least one of the following:

[0381] 1) Sending the second information to the first network function;

[0382] 2) Sending the fifth information to the fourth network function;

[0383] 3) Performing session association;

[0384] 4) Performing identifier association.

[0385] In some embodiments, if the fifth information includes the second session association information, and the second session association information includes: the first session information and the second session information, then the performing session association in the above first operation includes at least one of the following:

[0386] Associating the first session information and the second session information, or, associating the first session indicated by the first session information and the second session indicated by the second session information;

[0387] Assigning the same IP address or transport address to the first session indicated by the first session information and the second session indicated by the second session information;

[0388] Assigning the same IP address or transport address to the terminal device associated with the first session information and the terminal device associated with the second session information.

[0389] Wherein, the terminal device associated with the first session information includes, for example, the terminal device that creates the first session, the terminal device that sends the first session information, the terminal device indicated by the third identifier, etc., and the terminal device associated with the second session information includes, for example, the terminal device that creates the second session, the terminal device that sends the second session information, the terminal device indicated by the fourth identifier, etc.

[0390] In other embodiments, if the fifth information includes the second session association information, and the second session association information includes at least one of the following:

[0391] the first session information and the third session information;

[0392] the first session information and the fourth session information.

[0393] Then, the session association in the above first operation includes at least one of the following:

[0394] associating the first session information and the third session information, or associating the first session indicated by the first session information and the third session indicated by the third session information;

[0395] assigning the same IP address or transmission address to the first session indicated by the first session information and the third session indicated by the third session information;

[0396] assigning the same IP address or transmission address to the terminal device related to the first session information and the terminal device related to the third session information;

[0397] associating the first session information and the fourth session information, or associating the first session indicated by the first session information and the fourth session indicated by the fourth session information;

[0398] assigning the same IP address or transmission address to the first session indicated by the first session information and the fourth session indicated by the fourth session information;

[0399] assigning the same IP address or transmission address to the terminal device related to the first session information and the terminal device related to the fourth session information.

[0400] Among them, the terminal device related to the third session information includes, for example, the terminal device that creates the third session, the terminal device indicated by the fifth identifier or the fourth identifier, etc., and the terminal device related to the fourth session information includes, for example, the terminal device that creates the fourth session, the terminal device indicated by the fourth identifier or the fifth identifier, etc.

[0401] In some other embodiments, if the fifth information includes second session association information, and the third identifier association information includes at least one of the following:

[0402] the third identifier and the fourth identifier;

[0403] the third identifier and the fifth identifier.

[0404] Then, the identifier association in the above first operation includes at least one of the following:

[0405] associating the third identifier and the fourth identifier, or associating the terminal device indicated by the third identifier and the terminal device indicated by the fourth identifier;

[0406] Associate the third identifier and the fifth identifier, or, associate the terminal device indicated by the third identifier and the terminal device indicated by the fifth identifier.

[0407] Wherein, the session association information includes at least one of the following:

[0408] IP address information;

[0409] Transport address information;

[0410] Association ID;

[0411] A pair of session information including the sixth session information and the seventh session information.

[0412] Wherein, the session information includes at least one of the following:

[0413] Data network name DNN;

[0414] Single network slice selection assistance information S-NSSAI;

[0415] Access point name APN;

[0416] Protocol data unit PDU session ID;

[0417] Evolved packet system EPS bearer ID;

[0418] Session ID.

[0419] Optionally, in another embodiment, an information interaction method provided in this application may further include:

[0420] When the fourth network function receives the fifth information from the second network function, the fourth network function performs a second operation based on the fifth information.

[0421] Wherein, the second operation includes at least one of the following:

[0422] Perform session association;

[0423] Perform identifier association.

[0424] In some embodiments, if the fifth information includes the second session association information, the performing session association in the second operation may include:

[0425] Associate the first session information and the second session information, or, associate the first session indicated by the first session information and the second session indicated by the second session information;

[0426] Assign the same IP address or transport address to the first session indicated by the first session information and the second session indicated by the second session information;

[0427] Assign the same IP address or transport address to the terminal device associated with the first session information and the terminal device associated with the second session information;

[0428] Associate the first session information with the third session information, or associate the first session indicated by the first session information with the third session indicated by the third session information;

[0429] Assign the same IP address or transport address to the first session indicated by the first session information and the third session indicated by the third session information;

[0430] Assign the same IP address or transport address to the terminal device associated with the first session information and the terminal device associated with the third session information;

[0431] Associate the first session information with the fourth session information, or associate the first session indicated by the first session information with the fourth session indicated by the fourth session information;

[0432] Assign the same IP address or transport address to the first session indicated by the first session information and the fourth session indicated by the fourth session information;

[0433] Assign the same IP address or transport address to the terminal device associated with the first session information and the terminal device associated with the fourth session information.

[0434] In some embodiments, if the fifth information includes the third identification association information, the session association in the second operation may include:

[0435] Associate the third identification with the fourth identification, or associate the terminal device indicated by the third identification with the terminal device indicated by the fourth identification;

[0436] Associate the third identification with the fifth identification, or associate the terminal device indicated by the third identification with the terminal device indicated by the fifth identification.

[0437] As can be seen from the above introduction, for an information interaction method provided in an embodiment of this application, after the second network function receives the second information sent by the third network function, it can determine whether to perform session association and / or whether to perform identity association based on the second information, and when association is required, perform the association of the corresponding session and / or the association of the corresponding identity, so as to realize the association of different sessions and / or different identities of the same terminal device; and / or, after the fourth network function receives the fifth information sent by the second network function, it can determine whether to perform session association and / or whether to perform identity association based on the fifth information, and when association is required, perform the association of the corresponding session and / or the association of the corresponding identity, so as to realize the association of different sessions and / or different identities of the same terminal device.

[0438] In summary, by applying the information interaction method provided in the embodiment of this application, when the terminal device is in a dual registration situation, the association of two sessions or two identities can be realized, so that the terminal device can establish two associated sessions using different identities.

[0439] The following uses specific embodiments to illustrate the information interaction method provided in this application.

[0440] It should be noted that in the following embodiments, the terminal device is a DualSteerDevice, and a DualSteerDevice is a device with capabilities such as dual registration and dual-path transmission. The DualSteerDevice may include two Terminal Equipments (TEs): TE1 and TE2. A TE is similar to a UE function and can also be regarded as a UE, specifically as a modem of a UE. Alternatively, the DualSteerDevice can also be regarded as a UE, and this UE includes at least one independent modem and one independent SIM card.

[0441] It should also be noted that in the following embodiments, the first identity may be a GUTI 1 / 5G-GUTI or a first mapped GUTI (additional GUTI / mapped GUTI) mapped from the GUTI 1 / 5G-GUTI; the second identity may be a GUTI 2 / 4G-GUTI or a second mapped GUTI (additional GUTI / mapped GUTI) mapped from the GUTI 2 / 4G-GUTI; the third identity may be a SUPI1 or an IMSI1, and the fourth identity may be a SUPI2 or an IMSI2. Specific Embodiment 1

[0443] As Figure 5As shown, the first network function is AMF2, the second network function is SMF2, the third network function is UDM, the fourth network function is SMF1, and the fifth or sixth network function is AMF1 / MME1.

[0444] As Figure 5 shown, in the first specific embodiment, an information interaction method provided by the present application includes:

[0445] Step 1, the UE has registered in the 5G network based on SUPI1 and established a first PDU session based on (DNN1, S-NSSAI1).

[0446] Among them, the first session information corresponding to the first PDU session (i.e., the first session) includes: PDU session ID = #1, and the SMF serving the first PDU session is SMF1.

[0447] Step 2, the UE sends a session establishment request to AMF2 in the 5G network (the first network or the second network) based on GUTI2, requesting to establish a second PDU session.

[0448] For example, the UE sends a PDU Session Establishment Request to AMF2, carrying information related to the second PDU session, such as the PDU Session ID is ID#2, (DNN2, S-NSSAI2), and also carrying the first PDU session information (i.e., the first session information), for example, specifically can carry: SUPI2, PDU session ID = #2, (DNN2, S-NSSAI2), PDU session pair information (#1 / (DNN1, S-NSSAI1)).

[0449] Among them, GUTI2 is a temporary identifier of SUPI2.

[0450] Step 3, AMF2 receives the session establishment request, selects SMF2 to serve the second PDU session, and sends the sixth session information to SMF2.

[0451] Among them, the sixth session information may include: SUPI2, the second PDU session information, and the first PDU session information.

[0452] Step 4, SMF2 sends the first information to the UDM, and the first information is used to request session-related subscription information.

[0453] For example, carry at least one of the following in the first information: SUPI2, (DNN2, S-NSSAI2) in the second PDU session information.

[0454] Optionally, the first information may further include first indication information for indicating session association and / or identity association.

[0455] Step 5, the UDM determines second information based on the first information.

[0456] For example, the UDM learns the associated SUPI1 based on the subscription information of SUPI2 in the first information; the UDM learns the associated PDU session information (i.e., the first session association information) of the second PDU session based on the subscription information of SUPI2 or the operator's policy, such as (DNN1, S-NSSAI1) associated with (DNN2, S-NSSAI2); the UDM learns the relevant information of SMF1 serving the session, such as SMF ID or FQDN, etc., based on the associated SUPI1 and the associated (DNN1, S-NSSAI1).

[0457] Step 6, the UDM returns the second information to SMF2.

[0458] As an example, the second information may include: the subscription information of SUPI2, the relevant information of SMF1, and SUPI1. Optionally, the second information may further include: the first PDU session information, such as (DNN1, S-NSSAI1).

[0459] The UDM may also execute Step 5 and Step 6 based on the indication information. For example, upon receiving the above first indication information, it executes the above Step 5 and 6.

[0460] Step 7, SMF2 sends fifth information to SMF1 based on the second information.

[0461] Among them, the fifth information may include: SUPI2, the second PDU session information, SUPI1, and the first PDU session information.

[0462] Optionally, the fifth information may further include the relevant information of AMF2, such as AMF ID, FQDN, IP address, or transport address information, etc.

[0463] Among them, the first PDU session information in the fifth information may come from Step 3 or Step 6.

[0464] Optionally, SMF2 may also execute Step 7 based on the first PDU session information in Step 3 and Step 6. For example, if (DNN1, S-NSSAI1) of the first PDU session in Step 6 is different from (DNN1, S-NSSAI1) in Step 3, then Step 7 is not executed.

[0465] Step 8, SMF1 may perform a second operation based on the fifth information and return a response to AMF2.

[0466] Among them, the second operation includes at least one of the following:

[0467] Perform session association;

[0468] Perform identification association.

[0469] Among them, performing session association may include:

[0470] SMF1 may associate the first PDU session related to SUPI1 and the second PDU session related to SUPI2 based on the fifth information, and / or assign the same IP address to the first PDU session and the second PDU session.

[0471] Optionally, SMF1 returns response information to SMF2 or AMF2. The response information may include: information related to SMF1, subsequent operations related to the second PDU session. AMF2 may interact with SMF1.

[0472] Step 9, AMF2 returns a response message to the UE. The second PDU session is established, and the network side associates the first PDU session and the second PDU session. Specific Embodiment 2

[0474] As Figure 6 shown, the first network function is MME2, the second network function is SMF2, the third network function is UDM, the fourth network function is SMF1, and the fifth network function or the sixth network function is AMF1.

[0475] As Figure 6 shown, in Specific Embodiment 2, an information interaction method provided in this application includes:

[0476] Step 1, the UE has registered in the 5G network based on SUPI1 and established a first PDU session based on (DNN1, S-NSSAI1).

[0477] Among them, the first session information corresponding to the first PDU session (i.e., the first session) includes: PDU session ID = #1, and the SMF serving the first PDU session is SMF1.

[0478] Step 2, the UE sends a PND connection establishment request to MME2 in the 4G network (the first network or the second network) based on GUTI2, requesting to establish a PDN connection.

[0479] For example, the UE sends a PDN Connection Setup to MME2, carrying GUTI2 and the first PDU session information (i.e., the first session information), and the first PDU session information is carried through the Protocol Configuration Option (PCO) field. For example, specifically, it can carry: SUPI2, APN, PCO (PDU session pair information (#1 / (DNN1, S-NSSAI1))).

[0480] Among them, GUTI2 is the temporary identifier of SUPI2.

[0481] Step 3: MME2 receives the PND connection establishment request, selects SMF2 to serve the PDN connection, and sends a session information pair to SMF2.

[0482] Among them, the session information pair may include: SUPI2, APN, PCO (PDU session pair information (#1 / (DNN1, S-NSSAI1))).

[0483] Step 4: SMF2 sends the first information to the UDM, and the first information is used to request session-related subscription information.

[0484] For example, at least one of the following is carried in the first information: SUPI2, (DNN2, S-NSSAI2) in the PDN connection information.

[0485] Optionally, the first information may further include a first indication information for indicating session association and / or identity association.

[0486] Step 5: The UDM determines the second information based on the first information.

[0487] For example, the UDM learns the associated SUPI1 based on the subscription information of SUPI2 in the first information; the UDM learns the associated PDU session information of the second PDU session information (i.e., the first session association information) based on the subscription information of SUPI2 or the operator's policy, such as (DNN1, S-NSSAI1) associated with (DNN2, S-NSSAI2); the UDM learns the relevant information of SMF1 serving the session based on the associated SUPI1 and the associated (DNN1, S-NSSAI1), such as SMF ID or FQDN, etc.

[0488] Step 6: The UDM returns the second information to SMF2.

[0489] As an example, the second information may include: the subscription information of SUPI2, the relevant information of SMF1, and SUPI1. Optionally, the second information may further include: the first PDU session information, such as (DNN1, S-NSSAI1).

[0490] The UDM may also perform steps 5 and 6 based on the indication information. For example, if the above first indication information is received, steps 5 and 6 are performed.

[0491] Step 7, SMF2 sends the fifth information to SMF1 based on the second information.

[0492] Among them, the fifth information may include: SUPI2, the second PDU session information, SUPI1, and the first PDU session information.

[0493] Optionally, the fifth information may further include the relevant information of MME2, such as AMF ID, FQDN, IP address, or transport address information, etc.

[0494] Among them, the first PDU session information in the fifth information may come from step 3 or step 6.

[0495] Optionally, SMF2 may also perform step 7 based on the first PDU session information in steps 3 and 6. For example, if (DNN1, S-NSSAI1) of the first PDU session in step 6 is different from (DNN1, S-NSSAI1) in step 3, step 7 is not performed.

[0496] Step 8, SMF1 may perform a second operation based on the fifth information and return a response to MME2.

[0497] Among them, the second operation includes at least one of the following:

[0498] Perform session association;

[0499] Perform identity association.

[0500] Among them, performing session association may include:

[0501] SMF1 may associate the first PDU session related to SUPI1 and the second PDU session related to SUPI2 based on the fifth information, and / or allocate the same IP address to the first PDU session and the second PDU session.

[0502] Optionally, SMF1 returns response information to SMF2 or MME2. The response information may include: the relevant information of SMF1, and subsequent operations related to the second PDU session. MME2 may interact with SMF1.

[0503] Step 9, MME2 returns a response message to the UE. The establishment of the second PDU session is completed, and the network side associates the first PDU session and the second PDU session.

[0504] Further, after associating the sessions and / or identifiers with relevant relationships, the network side can, based on this association relationship, process these requests of the terminal device when the terminal device decides to perform any of the following, so as to ensure service continuity and reduce the number of connections of the terminal device in the same network when the terminal device updates or switches from one network to another network, thereby improving communication efficiency:

[0505] 1) Stop at least one of dual connection, multi-connection, dual access, multi-access, dual transmission, multi-transmission, concurrent transmission, dual registration, multi-registration, session merging, context merging, stop handover Switch, stop steering Steer, and stop splitting Split;

[0506] 2) Start at least one of single connection, single access, single transmission, and single registration.

[0507] For example, the following Specific Embodiment III.

[0508] Specific Embodiment III (4G to 5G handover, becoming single access)

[0509] In Specific Embodiment III, as Figure 7 shown, the first network function is MME2, the second network function is SMF, the third network function is UDM / AUSF, the fifth network function or the sixth network function is AMF1, and the seventh network function is AMF2. AMF1 is the target AMF of the dual-boot device, and AMF2 is the source AMF of the dual-boot device.

[0510] As Figure 7 shown, in Specific Embodiment III, an information interaction method provided by the present application may include:

[0511] Step 1a, the dual-boot device has registered based on SUPI1 in the 5G network, the dual-boot device has registered based on SUPI2 in the 4G network, and the dual-boot device may have established a session (PDN connection) in the 4G network.

[0512] Wherein, SUPI1 and SUPI2 may be different or the same.

[0513] Step 1b, perform handover required

[0514] Step 1c, the dual-boot device first initiates a cross-system handover process from 4G to 5G, and AMF1 is the target AMF.

[0515] Specifically, the 4G base station performs a handover of the 4G connection of the dual-boot device and sends a handover request to MME2. The dual-boot device performs a cross-system handover process. At this time, the dual-boot device is in a temporary state with two registrations and two connections in 5G, and the 4G context information is transferred to AMF1.

[0516] Suppose the dual-boot device needs to perform an inter-system mobility update from the 5G network to the 4G network, for example, the 5G network signal can no longer be used, and at the same time, it is desired to use only a single connection mode after moving to the 4G network, that is, there will be no complex situation of two registrations and two connections in the 4G network.

[0517] Step 2, the dual-boot device sends an inter-system mobility registration message to AMF1 in the 4G network, such as sending a Registration Request message. Among them, the registration request carries 5G-GUTI and / or the first mapped GUTI (additional GUTI), where 5G-GUTI is the GUTI obtained by the dual-boot device during 5G registration, and additional GUTI is the mapped GUTI; the registration request may also carry an inter-system mobility update indication (i.e., the first indication information), such as carrying an indication of "moving from EPC".

[0518] In this specific Embodiment 3, the 4G context information has been transferred to AMF1.

[0519] Among them, the 4G context information includes SUPI2 (the fourth identifier).

[0520] Optionally, the 4G context information may further include: second session information (such as PDU session ID, related DNN, S-NSSAI, SMF information).

[0521] Optionally, the 4G context information may further include identification association information for indicating that the terminal device has an associated SUPI, such as indicating by carrying SUPI2.

[0522] Optionally, the 4G context information may further include session association information, such as the mapping relationship between (DNN, S-NSSAI) and APN, and the EPS bearer ID corresponding to the PDU session.

[0523] Step 3, optionally, AMF1 may request the 5G context information (i.e., the first context information) of the dual-boot device from AMF2 based on 5G-GUTI.

[0524] Specifically, AMF1 may send a Namf_Communication_UEContextTransfer Request carrying a 5G-GUTI (the first identifier) to AMF2 to request 5G context information.

[0525] Step 4. Optionally, AMF2 returns the 5G context information.

[0526] Among them, the 5G context information may include SUPI1 (the third identifier).

[0527] Optionally, the 5G context information may further include first session information (such as PDU session ID, related DNN, S-NSSAI, SMF information).

[0528] Optionally, the 5G context information may further include identification association information for indicating that the terminal device has an associated SUPI, such as indicating by carrying SUPI2.

[0529] Optionally, the 5G context information may further include session association information, such as the mapping relationship between (DNN, S-NSSAI) and APN, and the EPS bearer ID corresponding to the PDU session.

[0530] It can be understood that when AMF2 and AMF1 are the same AMF, steps 3 and 4 are internal operations.

[0531] Step 5. Optionally, AMF1 may request subscription information from UDM 4 based on SUPI1 and / or SUPI2, or at least one of the second session information, identification association information, and session association information obtained in step 4, or request subscription information based on the SUPI1 registered in 5G or the SUPI2 registered in 4G.

[0532] For example, call the Nudm_SDM_Get operation to request subscription information.

[0533] UDM 4 returns the subscription information of SUPI1. The subscription information may include session association relationships, such as the mapping relationship between (DNN, S-NSSAI) and APN. The subscription information may further include identification association information.

[0534] Step 6. AMF1 combines the 5G context information and the 4G context information into third context information.

[0535] Optionally, AMF1 associates the third context information with a SUPI, such as associating it with SUPI1 or SUPI2.

[0536] Specifically, AMF1 can determine whether to merge 5G context information and 4G context information based on the identity association information and / or session association information in step 3 or step 5. If the associated SUPI of 5G registration is the SUPI of 4G registration, or the associated SUPI of 4G registration is the SUPI of 5G registration, or there is identity association information, then AMF1 performs the merging of 5G context information and 4G context information. Conversely, if the associated SUPI of 5G registration is not the SUPI of 4G registration, or the associated SUPI of 4G registration is not the SUPI of 5G registration, or there is no identity association information, then AMF1 can indicate registration rejection to the dual-boot device, or not perform context merging, and indicate through step 9 that the dual-boot device has not merged the context.

[0537] Step 7: AMF1 creates new PDU sessions for all 4G sessions of SUPI2 in 5G, and then, based on the merged context, determines whether an additional PDU session needs to be created for SUPI2 in 5G (for example, based on session association information, it is determined that a certain 5G session has no associated 4G session). If so, it instructs SMF to create a PDU session for SUPI2, such as by invoking the Nsmf_PDUSession_CreateSMContext operation. The parameters can include indication information 1 to indicate preparation for transfer / handoff. After the creation of this PDU session is completed, SMF notifies PGW-U (UPF) to transmit the downlink data packets for the corresponding 4G session through the PDU session path of SUPI2, and the corresponding 4G session no longer transmits downlink data. This operation can be based on indication information 1.

[0538] Another embodiment of steps 6 and 7 is that step 7 is executed first and then step 6, which is specifically as follows:

[0539] Step 7: AMF1 creates new PDU sessions for all 5G sessions of SUPI1 in 5G for SUPI2, which can carry identity association information, such as by carrying SUPI1 indication. SMF can decide whether to create a PDU session based on the identity association information and local session association information, and return the result to AMF1.

[0540] Step 6: AMF1 merges the two contexts based on the returned result, that is, when there are the same sessions (with an association relationship, or the returned result during creation indicates an associated session, failure, etc.), the PDU session in 5G is retained while the PDN connection or EPS bearer in 4G is invalidated.

[0541] Step 8: When AMF1 is not AMF2, AMF1 indicates the registration of AMF to UDM for the 4G-registered SUPI2.

[0542] The purpose of step 8 is to record the serving AMF information of SUPI2 in UDM.

[0543] Step 9, AMF1 sends a registration acceptance message to the dual-boot device, such as sending a Registration Accept message. The registration acceptance message may carry indication information for instructing the dual-boot device to perform at least one of the following: merging 5G context information and 4G context information, and 5G or 4G related information (such as indicating registration using 5G, 5G RAT type indicating registration using 5G, PLMN ID of the 5G network indicating registration using 5G, etc.).

[0544] Optionally, the dual-boot device merges the original 5G context information and 4G context information into 5G context information.

[0545] In the merged 5G context information, only one associated session is retained. For example, if two sessions have the same PDU session ID or EPS bearer ID, they are associated sessions. Optionally, the security context of 4G may not be included in the merge, that is, only the 5G security context is retained. In one embodiment, if single registration is not entered, there are two 5G context information, one of which has no session context; in another embodiment, if single registration is entered, there is only one 5G context information, the device enters the 5G single registration (SUPI2 registration) state, and the dual-boot device cancels at least one of the 4G context information and the local exit from the 4G registration state.

[0546] Step 10, optionally (for example, when dual registration is no longer required), after step 10, AMF1 also instructs the UDM to cancel the registration for SUPI1 of the 5G registration.

[0547] Step 11, optionally, link two registrations (Link two Registration).

[0548] Specifically, after step 8, the UDM learns about the service network element registration situation of the dual-boot device based on the indication information in step 8, or after step 10, the UDM learns about the service network element registration situation of the dual-boot device.

[0549] The service network element registration situation of the dual-boot device may include at least one of the following:

[0550] Register with MME / AMF;

[0551] Register with MME / AMF associated with SUPI.

[0552] It can be understood that when SUPI1 and SUPI2 are the same, there is one registration for SUPI with one MME and one AMF.

[0553] Optionally, when the dual-boot device establishes two registrations using two different SUPIs, after step 8, step 13 is executed to notify AMF2 of deregistration, and after step 10, step 12 is executed to notify MME2 of deregistration. When the two registrations of the dual-boot device on the network side are based on the same SUPI, step 13 is not executed, step 10 carries a single-registration indication, UDM deregisters MME2, and if the AMF1 registered in step 10 is not the existing registration in UDM (AMF1 is not AMF2), then step 16 is executed to deregister AMF2.

[0554] In step 15, UDM can perform a deregistration operation based on the association result of step 14 to deregister the registration of the dual-boot device on MME2 based on SUPI2.

[0555] In step 16, UDM notifies AMF2 of deregistration to deregister the registration of the dual-boot device on AMF2 based on SUPI1.

[0556] It should be noted that in addition to 4G and 5G networks, an information interaction method provided in an embodiment of the present application can also be applied to the interaction (interworking) aspect when 6G and 5G networks coexist.

[0557] It should be noted that for the information interaction method provided in an embodiment of the present application, the execution entity can be an information interaction device. In an embodiment of the present application, taking the information interaction device executing the information interaction method as an example, an information interaction device provided in an embodiment of the present application is described.

[0558] An information interaction device provided in an embodiment of the present application is described below with reference to the accompanying drawings. Since an information interaction device provided in an embodiment of the present application corresponds to an information interaction method provided in an embodiment of the present application, the description of an information interaction device provided in an embodiment of the present application is relatively brief, and for detailed content, reference can be made to the introduction in the method embodiment part above.

[0559] As Figure 8 shown, an embodiment of the present application provides an information interaction device 800, which can be applied to a third network function. The device 800 may include: an information receiving module 801 and an information sending module 802.

[0560] The information receiving module 801 is configured to receive first information from a second network function.

[0561] Among them, the second network function may be a second SMF, and the third network function may specifically be a UDM.

[0562] Among them, the first information may include at least one of the following:

[0563] A third identifier;

[0564] The third identifier and at least one of the following: the first session information, the first identifier association information, the second session information, the registration indication or the location update indication, the deregistration indication or the location cancellation indication.

[0565] As an example, the third identifier may include at least one of the following:

[0566] The first subscription permanent identifier (SUPI), such as SUPI1;

[0567] The first international mobile subscriber identity (IMSI), such as IMSI1.

[0568] The information sending module 802 is configured to send second information to the second network function based on the first information.

[0569] Wherein, the second information includes at least one of the following:

[0570] The third information;

[0571] The fourth information.

[0572] Wherein, the third information includes at least one of the following:

[0573] The second identifier association information;

[0574] The dual registration indication or the multiple registration indication.

[0575] Wherein, the fourth information includes at least one of the following:

[0576] The third session information;

[0577] The fourth session information;

[0578] The fifth session information;

[0579] The first session association information;

[0580] The relevant information of the fourth network function.

[0581] Wherein, the fourth session information indicates at least one of the allowed, accepted, and subscribed session information.

[0582] Wherein, the fifth session information indicates the session information that is not allowed or refused.

[0583] Optionally, the first identifier association information includes a fourth identifier, and / or, the second identifier association information includes a fifth identifier, and the fifth identifier is related to the third identifier, for example, the fifth identifier is the SUPI associated with the third identifier.

[0584] Optionally, the third identifier is different from the fourth identifier, and / or the third identifier is different from the fifth identifier.

[0585] Wherein, the fourth identifier includes at least one of the following:

[0586] Second SUPI;

[0587] Second IMSI;

[0588] Wherein, the fifth identifier includes at least one of the following:

[0589] Third SUPI;

[0590] Third IMSI.

[0591] In some embodiments, the fourth network function is related to at least one of the following:

[0592] At least one of the second session information and the second session indicated by the second session information;

[0593] At least one of the third session information and the third session indicated by the third session information;

[0594] At least one of the fourth session information and the fourth session indicated by the fourth session information.

[0595] In other embodiments, the fourth network function is related to at least one of the following:

[0596] At least one of the fourth identifier and the terminal device indicated by the fourth identifier;

[0597] At least one of the fifth identifier and the terminal device indicated by the fifth identifier.

[0598] Wherein, the first session association information includes at least one of the following:

[0599] IP address information;

[0600] Transport address information;

[0601] Association ID;

[0602] A pair of session information including sixth session information and seventh session information.

[0603] Wherein, the relevant information of the fourth network function may include at least one of the following: SMF ID, Fully Qualified Domain Name (FQDN), IP address, etc.

[0604] Optionally, Figure 8The device 800 shown may further include:

[0605] A first determination module, configured to determine the third information based on the first information and the subscription information.

[0606] A second determination module, configured to determine the fourth information based on the first information and the subscription information.

[0607] Wherein, the subscription information is related to at least one of the third identifier, the fourth identifier, and the fifth identifier.

[0608] Specifically, the third network function may obtain the third information through the third identifier and the subscription information corresponding to the third identifier, or may obtain the fifth identifier, and then obtain the third information through the subscription information corresponding to the fifth identifier, or synthesize the third information through the subscription information of the third identifier and the subscription information of the fifth identifier.

[0609] It should be noted that Figure 8 the device shown can implement Figure 2 the method shown, and can achieve the same technical effect. Therefore, the description is relatively simple, and for related parts, reference can be made to the description of the Figure 2 embodiment shown above.

[0610] As Figure 9 shown, an embodiment of the present application provides an information interaction device 900, which can be applied to a second network function. The device 900 may include: an information receiving module 901, an information sending module 902, and an operation execution module 903.

[0611] The information receiving module 901 is configured to send the first information to a third network function.

[0612] The information sending module 902 is configured to receive the second information sent by the third network function.

[0613] The operation execution module 903 is configured to execute a first operation based on the second information.

[0614] Wherein, the first operation includes at least one of the following:

[0615] 1) Sending the second information to a first network function;

[0616] 2) Sending the fifth information to a fourth network function;

[0617] 3) Performing session association;

[0618] 4) Performing identifier association.

[0619] Wherein, the first information includes any one of the following:

[0620] The third identifier;

[0621] The third identifier and at least one of the following: first session information, first identifier association information, second session information, registration indication or location update indication, deregistration indication or location cancellation indication.

[0622] Wherein, the fifth information includes at least one of the following:

[0623] Information related to a sixth network function, the sixth network function being related to the third identifier;

[0624] Third identifier association information;

[0625] Second session association information.

[0626] Wherein, the sixth network function may be a second AMF or a second MME, and the sixth network function being related to the third identifier specifically refers to the AMF or MME that serves the terminal device indicated by the third identifier or the third identifier, or the AMF or MME that sends the third identifier to the second network function.

[0627] Wherein, the third identifier includes at least one of the following:

[0628] First SUPI;

[0629] First IMSI.

[0630] Wherein, the second information includes at least one of the following:

[0631] Third information;

[0632] Fourth information.

[0633] Wherein, the third information includes at least one of the following:

[0634] First identifier association information;

[0635] Dual registration indication or multi-registration indication.

[0636] Wherein, the fourth information includes at least one of the following:

[0637] Third session information;

[0638] Fourth session information;

[0639] Fifth session information;

[0640] First session association information;

[0641] Information related to the fourth network function.

[0642] Wherein, the fourth session information indicates at least one of allowed, accepted, and subscribed session information;

[0643] Wherein, the fifth session information indicates session information of not allowed or rejected.

[0644] Optionally, the first identification association information includes a fourth identification, and the fourth identification is received from the sixth network function; and / or, the third identification association information includes a fifth identification.

[0645] Optionally, the fifth identification is different from the third identification, and / or, the third identification is different from the fourth identification.

[0646] Wherein, the fourth identification includes at least one of the following:

[0647] Second SUPI;

[0648] Second IMSI,

[0649] Wherein, the fifth identification includes at least one of the following:

[0650] Third SUPI;

[0651] Third IMSI.

[0652] In some embodiments, if the fifth information includes second session association information, and the second session association information includes: the first session information and the second session information, then the session association in the above first operation includes at least one of the following:

[0653] Associating the first session information and the second session information, or, associating the first session indicated by the first session information and the second session indicated by the second session information;

[0654] Allocating the same IP address or transport address to the first session indicated by the first session information and the second session indicated by the second session information;

[0655] Allocating the same IP address or transport address to the terminal device related to the first session information and the terminal device related to the second session information.

[0656] Wherein, the terminal device related to the first session information includes, for example, the terminal device that creates the first session, the terminal device that sends the first session information, the terminal device indicated by the third identification, etc., and the terminal device related to the second session information includes, for example, the terminal device that creates the second session, the terminal device that sends the second session information, the terminal device indicated by the fourth identification, etc.

[0657] In other embodiments, if the fifth information includes second session association information, and the second session association information includes at least one of the following:

[0658] The first session information and the third session information;

[0659] The first session information and the fourth session information.

[0660] Then, the session association in the above first operation includes at least one of the following:

[0661] Associate the first session information and the third session information, or associate the first session indicated by the first session information and the third session indicated by the third session information;

[0662] Assign the same IP address or transmission address to the first session indicated by the first session information and the third session indicated by the third session information;

[0663] Assign the same IP address or transmission address to the terminal device related to the first session information and the terminal device related to the third session information;

[0664] Associate the first session information and the fourth session information, or associate the first session indicated by the first session information and the fourth session indicated by the fourth session information;

[0665] Assign the same IP address or transmission address to the first session indicated by the first session information and the fourth session indicated by the fourth session information;

[0666] Assign the same IP address or transmission address to the terminal device related to the first session information and the terminal device related to the fourth session information.

[0667] Among them, the terminal device related to the third session information includes, for example, the terminal device that creates the third session, the terminal device indicated by the fifth identifier or the fourth identifier, etc., and the terminal device related to the fourth session information includes, for example, the terminal device that creates the fourth session, the terminal device indicated by the fourth identifier or the fifth identifier, etc.

[0668] In some other embodiments, if the fifth information includes second session association information, and the third identifier association information includes at least one of the following:

[0669] The third identifier and the fourth identifier;

[0670] The third identifier and the fifth identifier.

[0671] Then, the identifier association in the above first operation includes at least one of the following:

[0672] Associate the third identifier and the fourth identifier, or associate the terminal device indicated by the third identifier and the terminal device indicated by the fourth identifier;

[0673] Associate the third identifier with the fifth identifier, or, associate the terminal device indicated by the third identifier with the terminal device indicated by the fifth identifier.

[0674] Wherein, the session association information includes at least one of the following:

[0675] IP address information;

[0676] Transport address information;

[0677] Association ID;

[0678] A pair of session information including sixth session information and seventh session information.

[0679] Wherein, the session information includes at least one of the following:

[0680] Data network name DNN;

[0681] Single network slice selection assistance information S-NSSAI;

[0682] Access point name APN;

[0683] Protocol data unit PDU session ID;

[0684] Evolved packet system EPS bearer ID;

[0685] Session ID.

[0686] It should be noted that Figure 9 The shown device can implement Figure 3 The shown method and can achieve the same technical effects. Therefore, the description is relatively simple, and for relevant parts, reference can be made to the description of the Figure 3 Shown embodiment above.

[0687] As Figure 10 Shown, an embodiment of the present application provides an information interaction device 1000, which can be applied to the fourth network function. The device 1000 may include: an information receiving module 1001 and an operation execution module 1002.

[0688] The information receiving module 1001 is configured to receive the fifth information sent by the second network function.

[0689] The operation execution module 1002 is configured to execute a second operation based on the fifth information.

[0690] Wherein, the second operation includes at least one of the following:

[0691] Perform session association;

[0692] Perform identifier association.

[0693] Among them, the fifth information may include at least one of the following:

[0694] Information related to the sixth network function;

[0695] Third identifier association information;

[0696] Second session association information.

[0697] Among them, the third identifier association information may include at least one of the following:

[0698] The third identifier and the fourth identifier;

[0699] The third identifier and the fifth identifier.

[0700] Among them, the second session association information may include at least one of the following:

[0701] The first session information and the second session information;

[0702] The first session information and the third session information;

[0703] The first session information and the fourth session information.

[0704] In some embodiments, if the fifth information includes the second session association information, then the session association in the second operation may include:

[0705] Associating the first session information and the second session information, or, associating the first session indicated by the first session information and the second session indicated by the second session information;

[0706] Assigning the same IP address or transport address to the first session indicated by the first session information and the second session indicated by the second session information;

[0707] Assigning the same IP address or transport address to the terminal device related to the first session information and the terminal device related to the second session information;

[0708] Associating the first session information and the third session information, or, associating the first session indicated by the first session information and the third session indicated by the third session information;

[0709] Assigning the same IP address or transport address to the first session indicated by the first session information and the third session indicated by the third session information;

[0710] Assigning the same IP address or transport address to the terminal device related to the first session information and the terminal device related to the third session information;

[0711] Associate the first session information with the fourth session information, or associate the first session indicated by the first session information with the fourth session indicated by the fourth session information;

[0712] Assign the same IP address or transport address to the first session indicated by the first session information and the fourth session indicated by the fourth session information;

[0713] Assign the same IP address or transport address to the terminal device associated with the first session information and the terminal device associated with the fourth session information.

[0714] In some embodiments, if the fifth information includes the third identifier association information, the session association in the second operation may include:

[0715] Associate the third identifier with the fourth identifier, or associate the terminal device indicated by the third identifier with the terminal device indicated by the fourth identifier;

[0716] Associate the third identifier with the fifth identifier, or associate the terminal device indicated by the third identifier with the terminal device indicated by the fifth identifier.

[0717] Optionally, in the third identifier association information, the third identifier is different from the fourth identifier, or the third identifier is different from the fifth identifier.

[0718] Wherein, the third identifier includes at least one of the following:

[0719] The first Subscriber Permanent Identifier (SUPI);

[0720] The first International Mobile Subscriber Identity (IMSI).

[0721] Wherein, the fourth identifier includes at least one of the following:

[0722] The second SUPI;

[0723] The second IMSI.

[0724] Wherein, the fifth identifier includes at least one of the following:

[0725] The third SUPI;

[0726] The third IMSI.

[0727] Wherein, the session information includes at least one of the following:

[0728] Data Network Name (DNN);

[0729] Single Network Slice Selection Assistance Information (S-NSSAI);

[0730] Access Point Name APN;

[0731] Protocol Data Unit PDU session ID;

[0732] Evolved Packet System EPS bearer ID;

[0733] Session ID.

[0734] It should be noted that Figure 10 the device shown can implement Figure 4 the method shown and can achieve the same technical effects. Therefore, the description is relatively simple. For related parts, reference can be made to the description of the Figure 4 embodiment shown above.

[0735] It should be noted that the information interaction device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices other than the terminal. Exemplarily, the terminal can include but is not limited to the types of the terminal 12 listed above, and other devices can be a server, a Network Attached Storage (NAS), etc. The embodiments of the present application do not make specific limitations.

[0736] Optionally, as Figure 11 shown, the embodiments of the present application further provide a communication device 1100, including a processor 1101 and a memory 1102. A program or instruction that can run on the processor 1101 is stored on the memory 1102. For example, when the communication device 1100 is a terminal, when the program or instruction is executed by the processor 1101, it implements each step of the above-mentioned information interaction method embodiment and can achieve the same technical effects.

[0737] The embodiments of the present application further provide a terminal, including a processor and a communication interface. The communication interface is used to receive the fourth indication information broadcast or sent by the ninth network function. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this terminal embodiment and can achieve the same technical effects. Specifically, Figure 12 is a schematic diagram of the hardware structure of a terminal for implementing the embodiments of the present application.

[0738] The terminal 1200 includes but is not limited to at least some components such as a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1208, an interface unit 1209, a memory 1210, and a processor 1211.

[0739] Those skilled in the art can understand that the terminal 1200 may further include a power source (such as a battery) for powering each component. The power source can be logically connected to the processor 1211 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 12 The terminal structure shown in Figure 12 does not limit the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0740] It should be understood that in the embodiments of the present application, the input unit 1204 may include a Graphics Processing Unit (GPU) 12041 and a microphone 12042. The graphics processor 12041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1208 includes at least one of a touch panel 12081 and other input devices 12082. The touch panel 12081 is also called a touch screen. The touch panel 12081 may include two parts: a touch detection device and a touch controller. The other input devices 12082 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be elaborated here.

[0741] In the embodiments of the present application, after receiving downlink data from a network-side device, the radio frequency unit 1201 can transmit it to the processor 1211 for processing; in addition, the radio frequency unit 1201 can send uplink data to the network-side device. Generally, the radio frequency unit 1201 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0742] The memory 1210 can be used to store software programs or instructions and various data. The memory 1210 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1210 may include a volatile memory or a non-volatile memory, or the memory 1210 may include both a volatile memory and a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (Synchronous DRAM, SDRAM), a double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), an enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), a synchronous link dynamic random access memory (Synch link DRAM, SLDRAM), and a direct rambus random access memory (Direct Rambus RAM, DRRAM). The memory 1210 in the embodiments of the present application includes, but is not limited to, these and any other suitable types of memories.

[0743] The processor 1211 may include one or more processing units; optionally, the processor 1211 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1211.

[0744] Specifically, the embodiments of the present application also provide a network-side device. Such as Figure 13As shown in the figure, the network-side device 1300 includes: an antenna 1301, a radio frequency device 1302, a baseband device 1303, a processor 1304, and a memory 1305. The antenna 1301 is connected to the radio frequency device 1302. In the uplink direction, the radio frequency device 1302 receives information through the antenna 1301 and sends the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes the information to be sent and sends it to the radio frequency device 1302. After processing the received information, the radio frequency device 1302 sends it out through the antenna 1301.

[0745] In the above embodiments, the method executed by the network-side device can be implemented in the baseband device 1303, and the baseband device 1303 includes a baseband processor.

[0746] The baseband device 1303 may include, for example, at least one baseband board, and a plurality of chips are provided on the baseband board, such as Figure 13 As shown in the figure, one of the chips is, for example, a baseband processor, which is connected to the memory 1305 through a bus interface to call the program in the memory 1305 and execute the operations of the network device shown in the above method embodiments.

[0747] The network-side device may further include a network interface 1306, and the interface is, for example, a common public radio interface (CPRI).

[0748] Specifically, the network-side device 13000 in the embodiments of the present invention further includes: instructions or programs stored on the memory 1305 and executable on the processor 1304. The processor 1304 calls the instructions or programs in the memory 1305 to execute Figure 8 、 Figure 9 and Figure 10 the methods executed by each module shown in any of the attached drawings in , , and , and achieve the same technical effects. To avoid repetition, it will not be described in detail here.

[0749] The embodiments of the present application further provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the various processes of the above information interaction method embodiments are implemented, and the same technical effects can be achieved. To avoid repetition, it will not be described in detail here.

[0750] Wherein, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc.

[0751] Another embodiment of the present application further provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement each process of the above information interaction method embodiment, and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0752] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0753] Another embodiment of the present application further provides a computer program / program product, which is stored in a non-volatile storage medium. The computer program / program product is executed by at least one processor to implement each process of the above information interaction method embodiment, and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0754] The embodiments of the present application further provide a communication system, including: a second network function, a third network function, and a fourth network function. The second network function can be used to execute the steps of Figure 3 the information interaction method as described above, the third network function can be used to execute the steps of Figure 2 the information interaction method as described above, and the fourth network function can be used to execute the steps of Figure 4 the information interaction method as described above.

[0755] It should be noted that in this article, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including one..." does not exclude the presence of additional identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0756] Through the description of the above embodiments, those skilled in the art can clearly understand that the above method of the embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art can be embodied in the form of a computer software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions to enable a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present application.

[0757] The embodiments of the present application have been described above with reference to the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. An information interaction method, characterized in that, The method includes: A third network function receives first information from a second network function; The third network function sends second information to the second network function based on the first information; Wherein, the first information includes any one of the following: A third identifier; The third identifier and at least one of the following: first session information, first identifier association information, second session information, registration indication or location update indication, deregistration indication or location cancellation indication; Wherein, the second information includes at least one of the following: Third information; Fourth information; Wherein, the third information includes at least one of the following: Second identifier association information; Dual registration indication or multi-registration indication; Wherein, the fourth information includes at least one of the following: Third session information; Fourth session information; Fifth session information; First session association information; Relevant information of a fourth network function; Wherein, the fourth session information indicates at least one of allowed, accepted, subscribed session information; Wherein, the fifth session information indicates session information that is not allowed or rejected.

2. The method according to claim 1, characterized in that The third identifier includes at least one of the following: First Subscriber Permanent Identifier (SUPI); First International Mobile Subscriber Identity (IMSI).

3. The method according to claim 1 or 2, characterized in that, The fourth network function is related to at least one of the following: At least one of the second session information and the second session indicated by the second session information; At least one of the third session information and the third session indicated by the third session information; At least one of the fourth session information and the fourth session indicated by the fourth session information.

4. The method according to any one of claims 1 to 3, characterized in that, The first identifier association information includes a fourth identifier, and / or, the second identifier association information includes a fifth identifier, and the fifth identifier is related to the third identifier.

5. The method according to claim 4, wherein The third identifier is different from the fourth identifier, and / or, the third identifier is different from the fifth identifier.

6. The method according to claim 4 or 5, characterized in that, The fourth identifier includes at least one of the following: Second SUPI; Second IMSI; And / or, the fifth identifier includes at least one of the following: Third SUPI; Third IMSI.

7. The method according to any one of claims 4 to 6, characterized in that The fourth network function is related to at least one of the following: At least one of the fourth identifier and the terminal device indicated by the fourth identifier; At least one of the fifth identifier and the terminal device indicated by the fifth identifier.

8. The method according to any one of claims 1 to 7, characterized in that The first session association information includes at least one of the following: IP address information; Transport address information; Association ID; A pair of session information including sixth session information and seventh session information.

9. The method according to any one of claims 1 to 8, characterized in that The method further includes at least one of the following: The third network function determines the third information based on the first information and subscription information; The third network function determines the fourth information based on the first information and subscription information; Wherein, the subscription information is related to at least one of the third identifier, fourth identifier, and fifth identifier.

10. The method according to any one of claims 1 to 9, characterized in that, The session information includes at least one of the following: Data Network Name (DNN); Single Network Slice Selection Assistance Information (S-NSSAI); Access Point Name (APN); Protocol Data Unit (PDU) session ID; Evolved Packet System (EPS) bearer ID; Session ID.

11. An information interaction method, characterized in that, The method includes: The second network function sends the first information to the third network function; The second network function receives the second information sent by the third network function; The second network function performs a first operation based on the second information; Wherein, the first operation includes at least one of the following: Sending the second information to the first network function; Sending the fifth information to the fourth network function; Performing session association; Performing identity association; Wherein, the first information includes any one of the following: The third identifier; The third identifier and at least one of the following: the first session information, the first identity association information, the second session information, the registration indication or location update indication, the deregistration indication or location cancellation indication; Wherein, the fifth information includes at least one of the following: The related information of the sixth network function, and the sixth network function is related to the third identifier; The third identifier association information; The second session association information.

12. The method according to claim 11, wherein The third identifier includes at least one of the following: The first Subscriber Permanent Identifier (SUPI); The first International Mobile Subscriber Identity (IMSI).

13. The method according to claim 11 or 12, characterized in that, The performing session association includes at least one of the following: Associating the first session information and the second session information, or, associating the first session indicated by the first session information and the second session indicated by the second session information; Allocating the same IP address or transport address to the first session indicated by the first session information and the second session indicated by the second session information; Allocating the same IP address or transport address to the terminal device related to the first session information and the terminal device related to the second session information; And / or, the second session association information includes: The first session information and the second session information.

14. The method according to any one of claims 11 to 13, characterized in that, The second information includes at least one of the following: The third information; The fourth information; Wherein, the third information includes at least one of the following: The first identity association information; The dual registration indication or multi-registration indication; Wherein, the fourth information includes at least one of the following: The third session information; The fourth session information; The fifth session information; The first session association information; The related information of the fourth network function; Wherein, the fourth session information indicates at least one of the session information of allowed, accepted, and subscribed; Wherein, the fifth session information indicates the session information of not allowed or refused.

15. The method according to claim 14, wherein The performing session association includes at least one of the following: Associating the first session information and the third session information, or, associating the first session indicated by the first session information and the third session indicated by the third session information; Allocating the same IP address or transport address to the first session indicated by the first session information and the third session indicated by the third session information; Allocating the same IP address or transport address to the terminal device related to the first session information and the terminal device related to the third session information; Associating the first session information and the fourth session information, or, associating the first session indicated by the first session information and the fourth session indicated by the fourth session information; Allocating the same IP address or transport address to the first session indicated by the first session information and the fourth session indicated by the fourth session information; Assign the same IP address or transport address to the terminal device associated with the first session information and the terminal device associated with the fourth session information; And / or, the second session association information includes at least one of the following: The first session information and the third session information; The first session information and the fourth session information.

16. The method according to any one of claims 11 to 15, characterized in that, The first identifier association information includes a fourth identifier, and the fourth identifier is received from the sixth network function; and / or, the third identifier association information includes a fifth identifier.

17. The method according to claim 16, wherein The fifth identifier is different from the third identifier, and / or, the third identifier is different from the fourth identifier.

18. The method according to claim 16 or 17, characterized in that, The fourth identifier includes at least one of the following: Second SUPI; Second IMSI; And / or, the fifth identifier includes at least one of the following: Third SUPI; Third IMSI.

19. The method according to any one of claims 16 to 18, characterized in that, The performing identifier association includes at least one of the following: Associate the third identifier and the fourth identifier, or, associate the terminal device indicated by the third identifier and the terminal device indicated by the fourth identifier; Associate the third identifier and the fifth identifier, or, associate the terminal device indicated by the third identifier and the terminal device indicated by the fifth identifier; And / or, the third identifier association information includes at least one of the following: The third identifier and the fourth identifier; The third identifier and the fifth identifier.

20. The method according to any one of claims 11 to 19, characterized in that, The session association information includes at least one of the following: IP address information; Transport address information; Association ID; A pair of session information including the sixth session information and the seventh session information.

21. The method according to any one of claims 11 to 20, characterized in that, The session information includes at least one of the following: Data network name DNN; Single network slice selection assistance information S-NSSAI; Access point name APN; Protocol data unit PDU session ID; Evolved packet system EPS bearer ID; Session ID.

22. An information interaction method, characterized in that, The method includes: The fourth network function receives the fifth information sent by the second network function; The fourth network function performs a second operation based on the fifth information: Wherein, the second operation includes at least one of the following: Perform session association; Perform identifier association.

23. The method according to claim 22, characterized in that, The fifth information includes at least one of the following: Information related to the sixth network function; Third identifier association information; Second session association information.

24. The method according to claim 23, wherein The third identifier association information includes at least one of the following: Third identifier and fourth identifier; Third identifier and fifth identifier.

25. The method according to claim 24, characterized in that, The second session association information includes at least one of the following: First session information and second session information; First session information and third session information; First session information and fourth session information.

26. The method according to claim 25, wherein The performing session association includes: Associate the first session information and the second session information, or, associate the first session indicated by the first session information and the second session indicated by the second session information; Assign the same IP address or transport address to the first session indicated by the first session information and the second session indicated by the second session information; Assign the same IP address or transport address to the terminal device associated with the first session information and the terminal device associated with the second session information; Associate the first session information with the third session information, or associate the first session indicated by the first session information with the third session indicated by the third session information; Assign the same IP address or transport address to the first session indicated by the first session information and the third session indicated by the third session information; Assign the same IP address or transport address to the terminal device associated with the first session information and the terminal device associated with the third session information; Associate the first session information with the fourth session information, or associate the first session indicated by the first session information with the fourth session indicated by the fourth session information; Assign the same IP address or transport address to the first session indicated by the first session information and the fourth session indicated by the fourth session information; Assign the same IP address or transport address to the terminal device associated with the first session information and the terminal device associated with the fourth session information.

27. The method according to any one of claims 24 to 26, characterized in that, The performing of the identification association includes: Associate the third identifier with the fourth identifier, or associate the terminal device indicated by the third identifier with the terminal device indicated by the fourth identifier; Associate the third identifier with the fifth identifier, or associate the terminal device indicated by the third identifier with the terminal device indicated by the fifth identifier.

28. The method according to any one of claims 24 to 27, characterized in that, The third identifier is different from the fourth identifier, or the third identifier is different from the fifth identifier.

29. The method according to any one of claims 24 to 28, wherein The third identifier includes at least one of the following: The first Subscriber Permanent Identifier (SUPI); The first International Mobile Subscriber Identity (IMSI); And / or, the fourth identifier includes at least one of the following: The second SUPI; The second IMSI; And / or, the fifth identifier includes at least one of the following: The third SUPI; The third IMSI.

30. The method according to any one of claims 23 to 29, wherein The fourth network function indicates the association result information to the sixth network function.

31. The method according to any one of claims 22 to 30, characterized in that, The session information includes at least one of the following: Data Network Name (DNN); Single Network Slice Selection Assistance Information (S-NSSAI); Access Point Name (APN); Protocol Data Unit (PDU) session ID; Evolved Packet System (EPS) bearer ID; Session ID.

32. An information interaction method, characterized in that, Includes: The second network function sends a first message to the third network function, and the first message is used to indicate the third identifier or the information associated with the third identifier; The third network function sends a second message to the second network function, and the second message is used to perform session association and / or perform identification association; The second network function performs a first operation based on the second message; Wherein, the first operation includes at least one of the following: Send the second message to the first network function; Send a fifth message to the fourth network function for performing session association and / or performing identification association; Perform session association; Perform identification association.

33. The method according to claim 32, wherein The first message includes any one of the following: The third identifier; a third identifier and at least one of the following: first session information, first identifier association information, second session information, a registration indication or a location update indication, a deregistration indication or a location cancellation indication; and / or, the second information includes at least one of the following: third information; fourth information; wherein, the third information includes at least one of the following: second identifier association information; a dual registration indication or a multiple registration indication; wherein, the fourth information includes at least one of the following: third session information; fourth session information; fifth session information; first session association information; information related to a fourth network function; wherein, the fourth session information indicates at least one of allowed, accepted, subscribed session information; wherein, the fifth session information indicates disallowed or rejected session information; and / or, the fifth information includes at least one of the following: information related to a sixth network function; third identifier association information; second session association information; wherein, the third identifier association information includes at least one of the following: a third identifier and a fourth identifier; a third identifier and a fifth identifier; wherein, the second session association information includes at least one of the following: first session information and second session information; first session information and third session information; first session information and fourth session information.

34. The method according to claim 32 or 33, characterized in that, The method further includes: when the fourth network function receives the fifth information from the second network function, the fourth network function performs a second operation based on the fifth information; wherein, the second operation includes at least one of the following: performing session association; performing identifier association.

35. A network-side device, characterized in that, comprising a processor and a memory, the memory stores a program or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the information interaction method according to any one of claims 1 to 31 are implemented.

36. A readable storage medium, characterized in that, The program or instructions are stored on the readable storage medium, and when the program or instructions are executed by the processor, the steps of the information interaction method according to any one of claims 1 to 31 are implemented.

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