Communication method, device, system, and storage medium

Abstract

Embodiments of the present disclosure relate to the technical field of communications, and disclosed are a communication method, an apparatus, and a computer-readable storage medium. The communication method comprises: associating first information of a first terminal with second information of the first terminal, wherein the first information is used for identifying the first terminal in a control plane, and the second information is used for identifying the first terminal in a user plane. The embodiments of the present disclosure provide a solution for associating the first information for identifying the first terminal in the control plane with the second information for identifying the first terminal in the user plane.

Description

Communication method, device, system and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method, device, system, and storage medium. Background Art

[0002] Terminals can be located using either user plane positioning or control plane positioning. User plane positioning enables communication systems to have more efficient communication loads, allowing a single session to handle multiple transactions and supporting multiple positioning methods.

[0003] Summary of the Invention

[0004] Embodiments of the present disclosure provide a communication method, device, system, and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, which is applied to a first network element. The method includes:

[0006] Associating the first information of the first terminal with the second information;

[0007] The first information is used to identify the first terminal on the control plane, and the second information is used to identify the first terminal on the user plane.

[0008] A second aspect of the embodiments of the present disclosure provides a communication method, applied to a second network element, the method including:

[0009] A first message from a first terminal is transmitted to a first network element, where the first message includes second information, and the second information is used to identify the first terminal on a user plane.

[0010] In a third aspect, an embodiment of the present disclosure provides a communication method, applied to a second network element, the method comprising:

[0011] receiving a second message sent by the first network element, where the second message is used to request second information of the first terminal;

[0012] Sending a third message to the first network element, where the third message includes the second information;

[0013] The second information is used to identify the first terminal on the user plane.

[0014] In a fourth aspect, an embodiment of the present disclosure provides a communication method, applied to a third network element, the method comprising:

[0015] receiving a fourth message sent by the second network element, where the fourth message is used to request second information of the first terminal;

[0016] Sending a fifth message to the second network element, where the fifth message includes the second information;

[0017] The second information is used to identify the first terminal on the user plane.

[0018] In a fifth aspect, an embodiment of the present disclosure provides a communication method, applied to a fourth network element, the method including:

[0019] receiving a sixth message sent by the first network element, where the sixth message is used to request first information of the first terminal;

[0020] Sending a seventh message to the first network element, where the seventh message includes the first information;

[0021] The first information is used to identify the first terminal on the control plane.

[0022] In a sixth aspect, an embodiment of the present disclosure provides a communication method, applied to a first terminal, the method comprising:

[0023] A first message is sent to the first network element via the second network element, where the first message includes second information, and the second information is used to identify the first terminal on the user plane.

[0024] In a seventh aspect, an embodiment of the present disclosure provides a first network element, including:

[0025] A first processing module, configured to associate the first information of the first terminal with the second information;

[0026] The first information is used to identify the first terminal on the control plane, and the second information is used to identify the first terminal on the user plane.

[0027] In an eighth aspect, an embodiment of the present disclosure provides a second network element, including:

[0028] A second transceiver module is configured to transmit a first message from a first terminal to a first network element, where the first message includes second information, and the second information is used to identify the first terminal on a user plane;

[0029] or,

[0030] The second transceiver module is used to receive a second message sent by the first network element, where the second message is used to request second information of the first terminal, and is also used to send a third message to the first network element, where the third message includes the second information; wherein the second information is used to identify the first terminal on the user side.

[0031] In a ninth aspect, an embodiment of the present disclosure provides a third network element, including:

[0032] The third transceiver module is used to receive a fourth message sent by the second network element, where the fourth message is used to request second information of the first terminal, and is also used to send a fifth message to the second network element, where the fifth message includes the second information; wherein the second information is used to identify the first terminal on the user side.

[0033] In a tenth aspect, an embodiment of the present disclosure provides a fourth network element, including:

[0034] The fourth transceiver module is used to receive the sixth message sent by the first network element, the sixth message is used to request the first information of the first terminal, and is also used to send a seventh message to the first network element, the seventh message includes the first information; wherein the first information is used to identify the first terminal on the control plane.

[0035] In an eleventh aspect, an embodiment of the present disclosure provides a first terminal, including:

[0036] The fifth transceiver module is used to send a first message to the first network element via the second network element, where the first message includes second information, and the second information is used to identify the first terminal on the user plane.

[0037] In a twelfth aspect, an embodiment of the present disclosure provides a first network element, including:

[0038] one or more processors;

[0039] The first network element is used to execute the method described in the optional implementation manner of the first aspect.

[0040] In a thirteenth aspect, an embodiment of the present disclosure provides a second network element, including:

[0041] one or more processors;

[0042] The second network element executes the method described in the optional implementation of the second aspect or the third aspect.

[0043] In a fourteenth aspect, an embodiment of the present disclosure provides a third network element, including:

[0044] one or more processors;

[0045] Among them, the first network element is used to execute the method described in the optional implementation manner of the fourth aspect.

[0046] In a fifteenth aspect, an embodiment of the present disclosure provides a fourth network element, including:

[0047] one or more processors;

[0048] Among them, the first network element is used to execute the method described in the optional implementation manner of the fifth aspect.

[0049] In a sixteenth aspect, an embodiment of the present disclosure provides a first terminal, including:

[0050] one or more processors;

[0051] Among them, the first terminal is used to execute the method described in the optional implementation manner of the sixth aspect.

[0052] In a seventeenth aspect, an embodiment of the present disclosure provides a communication system, including: a first terminal and a first network element, wherein:

[0053] The first network element is configured to associate the first information and the second information of the first terminal;

[0054] The first information is used to identify the first terminal on the control plane, and the second information is used to identify the first terminal on the user plane.

[0055] According to the eighteenth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, in which executable instructions are stored. The executable instructions are loaded and executed by the processor to implement the method described in the optional implementation of any one of the aforementioned first to sixth aspects.

[0056] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0058] FIG1a is a schematic structural diagram of a wireless communication system according to an exemplary embodiment;

[0059] FIG1b is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0060] FIG1c is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0061] FIG2a is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0062] FIG2 b is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0063] FIG2c is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0064] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure;

[0065] FIG4a is a flow chart of a communication method according to an embodiment of the present disclosure;

[0066] FIG4 b is a flow chart of a communication method according to an embodiment of the present disclosure;

[0067] FIG5 is a flow chart of a communication method according to an embodiment of the present disclosure;

[0068] FIG6 is a flow chart of a communication method according to an embodiment of the present disclosure;

[0069] FIG7 a is a flow chart of a communication method according to an embodiment of the present disclosure;

[0070] FIG7 b is a flow chart of a communication method according to an embodiment of the present disclosure;

[0071] FIG7c is a flow chart of a communication method according to an embodiment of the present disclosure;

[0072] FIG7 d is a flow chart of a communication method according to an embodiment of the present disclosure;

[0073] FIG8a is a schematic structural diagram of a first network element proposed in an embodiment of the present disclosure;

[0074] FIG8b is a schematic structural diagram of a second network element proposed in an embodiment of the present disclosure;

[0075] FIG8c is a schematic structural diagram of a third network element proposed in an embodiment of the present disclosure;

[0076] FIG8 d is a schematic structural diagram of a fourth network element according to an embodiment of the present disclosure;

[0077] FIG8e is a schematic structural diagram of a first terminal shown in an embodiment of the present disclosure;

[0078] FIG9a is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure;

[0079] FIG9 b is a schematic structural diagram of a chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0080] The embodiments of the present disclosure provide a communication method, a device, a communication system, and a storage medium.

[0081] In a first aspect, an embodiment of the present disclosure provides a communication method, applied to a first network element, the method including:

[0082] Associating the first information of the first terminal with the second information;

[0083] The first information is used to identify the first terminal on the control plane, and the second information is used to identify the first terminal on the user plane.

[0084] In the above embodiment, the first information for identifying the terminal on the control plane and the second information for identifying the terminal on the user plane of the same terminal can be associated, so as to match the user plane message and the control plane message of the same terminal.

[0085] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0086] A first message sent by the first terminal is received via a second network element, where the first message includes the second information.

[0087] In combination with some embodiments of the first aspect, in some embodiments, the first message is used to notify that the first user plane connection between the first terminal and the first network element is established, and the first message includes the second information.

[0088] In the above embodiment, the terminal may provide the first network element with second information for identifying the terminal in the user plane after establishing the user plane connection, so that the first network element associates the second information with the first information for identifying the terminal in the control plane.

[0089] In combination with some embodiments of the first aspect, in some embodiments, the first message is used to confirm the establishment of a first user plane connection between the first terminal and the first network element, and the first message includes the second information.

[0090] In the above embodiment, the terminal may provide the first network element with second information for identifying the terminal in the user plane after establishing the user plane connection, so that the first network element associates the second information with the first information for identifying the terminal in the control plane.

[0091] In combination with some embodiments of the first aspect, in some embodiments, the second information is acquired by the first terminal.

[0092] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0093] Sending a second message to the second network element, where the second message is used to request the second information;

[0094] Receive a third message sent by the second network element, where the third message includes the second information.

[0095] In the above embodiment, the first network element may request the second information used to identify the terminal in the user plane from the second network element, so as to associate the second information with the first information used to identify the terminal in the control plane.

[0096] In conjunction with some embodiments of the first aspect, in some embodiments, the second message includes at least one of the following information:

[0097] the first information;

[0098] Information about PDU sessions;

[0099] The first indication information is used to indicate a request for the second information.

[0100] In combination with some embodiments of the first aspect, in some embodiments, the second information is included in the context of the first terminal stored in the second network element.

[0101] In the foregoing embodiment, the second network element may store the second information used to identify the terminal in the user plane in the context of the terminal, so as to provide the second information to the first network element.

[0102] In combination with some embodiments of the first aspect, in some embodiments, the second information is obtained by the second network element from a third network element.

[0103] In the above embodiment, the second network element may obtain the second information used to identify the terminal on the user plane from the third network element, so as to provide the second information to the first network element.

[0104] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0105] The second information is stored in the context of the first terminal.

[0106] In the above embodiment, the first network element may store the acquired second information used to identify the terminal on the user plane in the context of the terminal for subsequent use.

[0107] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0108] sending a sixth message to the fourth network element, where the second message is used to request the first information;

[0109] Receive a seventh message sent by the fourth network element, where the seventh message includes the first information.

[0110] In the above embodiment, the first network element may request the first information used to identify the terminal on the control plane from the fourth network element, so as to associate the first information with the second information used to identify the terminal on the user plane.

[0111] With reference to some embodiments of the first aspect, in some embodiments, the sixth message includes the following information:

[0112] the second information;

[0113] Information of the first network element.

[0114] In combination with some embodiments of the first aspect, in some embodiments, the first information is obtained by the fourth network element from a fifth network element.

[0115] In the above embodiment, the fourth network element may obtain the first information used to identify the terminal on the control plane from the fifth network element, so as to provide the first information to the first network element.

[0116] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0117] The first information is stored in a context of the first terminal.

[0118] In the above embodiment, the first network element may store the acquired first information for identifying the terminal on the control plane in the context of the terminal for subsequent use.

[0119] In a second aspect, an embodiment of the present disclosure provides a communication method, applied to a second network element, the method including:

[0120] A first message from a first terminal is transmitted to a first network element, where the first message includes second information, and the second information is used to identify the first terminal on a user plane.

[0121] In combination with some embodiments of the second aspect, in some embodiments, the first message is used to notify that the first user plane connection between the first terminal and the first network element is established, and the first message includes the second information.

[0122] In combination with some embodiments of the second aspect, in some embodiments, the first message is used to confirm the establishment of the first user plane connection between the first terminal and the first network element, and the first message includes the second information.

[0123] In combination with some embodiments of the second aspect, in some embodiments, the second information is information corresponding to the PDU session obtained by the first terminal.

[0124] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0125] The second information is stored in the context of the first terminal.

[0126] In a third aspect, an embodiment of the present disclosure provides a communication method, applied to a second network element, the method comprising:

[0127] receiving a second message sent by the first network element, where the second message is used to request second information of the first terminal;

[0128] Sending a third message to the first network element, where the third message includes the second information;

[0129] The second information is used to identify the first terminal on the user plane.

[0130] In conjunction with some embodiments of the third aspect, in some embodiments, the second message includes at least one of the following information:

[0131] The first information of the first terminal is used to identify the first terminal on the control plane;

[0132] Information about PDU sessions;

[0133] The first indication information is used to indicate a request for the second information.

[0134] In combination with some embodiments of the third aspect, in some embodiments, the second information is included in the context of the first terminal stored in the second network element.

[0135] In conjunction with some embodiments of the third aspect, in some embodiments, before sending the third message to the first network element, the method further includes:

[0136] determining SM context information and PDU session information according to the first information, and sending a fourth message to a third network element, where the fourth message is used to request the second information;

[0137] Receive a fifth message sent by the third network element, where the fifth message includes the second information.

[0138] In conjunction with some embodiments of the third aspect, in some embodiments, the fourth message includes at least one of the following information:

[0139] Information about the SM context;

[0140] Information about the PDU session;

[0141] The second indication information is used to indicate a request for the second information.

[0142] In conjunction with some embodiments of the third aspect, in some embodiments, the method further includes:

[0143] The second information is stored in the context of the first terminal.

[0144] In the above embodiment, the second network element may store the second information obtained from the third network element and used to identify the terminal on the user plane in the context of the terminal, so as to provide the information to the first network element.

[0145] In a fourth aspect, an embodiment of the present disclosure provides a communication method, applied to a third network element, the method comprising:

[0146] receiving a fourth message sent by the second network element, where the fourth message is used to request second information of the first terminal;

[0147] Sending a fifth message to the second network element, where the fifth message includes the second information;

[0148] The second information is used to identify the first terminal on the user plane.

[0149] In a fifth aspect, an embodiment of the present disclosure provides a communication method, applied to a fourth network element, the method including:

[0150] receiving a sixth message sent by the first network element, where the sixth message is used to request first information of the first terminal;

[0151] Sending a seventh message to the first network element, where the seventh message includes the first information;

[0152] The first information is used to identify the first terminal on the control plane.

[0153] With reference to some embodiments of the fifth aspect, in some embodiments, the sixth message includes the following information:

[0154] The second information of the first terminal is used to identify the first terminal on a user plane;

[0155] Information of the first network element.

[0156] In combination with some embodiments of the fifth aspect, in some embodiments, the first information is obtained by the fourth network element from the fifth network element.

[0157] In a sixth aspect, an embodiment of the present disclosure provides a communication method, applied to a first terminal, the method comprising:

[0158] A first message is sent to the first network element via the second network element, where the first message includes second information, and the second information is used to identify the first terminal on the user plane.

[0159] With reference to some embodiments of the sixth aspect, in some embodiments, the first message is used to notify the first terminal and the first network element that the first user plane connection between the first terminal and the first network element is established, and the second information is carried in the first message;

[0160] or,

[0161] The first message carries first notification information and the second information, wherein the first notification information is used to notify that the first user plane connection between the first terminal and the first network element is established.

[0162] With reference to some embodiments of the sixth aspect, in some embodiments, the first message is used to confirm establishment of a first user plane connection between the first terminal and the first network element, and the second information is carried in the first message;

[0163] or,

[0164] The first message carries first notification information and the second information, wherein the first notification information is used to confirm the establishment of a first user plane connection between the first terminal and the first network element.

[0165] In conjunction with some embodiments of the sixth aspect, in some embodiments, the method further includes:

[0166] Obtain the second information corresponding to the PDU session.

[0167] In a seventh aspect, an embodiment of the present disclosure provides a first network element, including:

[0168] A first processing module, configured to associate the first information of the first terminal with the second information;

[0169] The first information is used to identify the first terminal on the control plane, and the second information is used to identify the first terminal on the user plane.

[0170] In an eighth aspect, an embodiment of the present disclosure provides a second network element, including:

[0171] A second transceiver module is configured to transmit a first message from a first terminal to a first network element, where the first message includes second information, and the second information is used to identify the first terminal on a user plane;

[0172] or,

[0173] The second transceiver module is used to receive a second message sent by the first network element, where the second message is used to request second information of the first terminal, and is also used to send a third message to the first network element, where the third message includes the second information; wherein the second information is used to identify the first terminal on the user side.

[0174] In a ninth aspect, an embodiment of the present disclosure provides a third network element, including:

[0175] The third transceiver module is used to receive a fourth message sent by the second network element, where the fourth message is used to request second information of the first terminal, and is also used to send a fifth message to the second network element, where the fifth message includes the second information; wherein the second information is used to identify the first terminal on the user side.

[0176] In a tenth aspect, an embodiment of the present disclosure provides a fourth network element, including:

[0177] The fourth transceiver module is used to receive the sixth message sent by the first network element, the sixth message is used to request the first information of the first terminal, and is also used to send a seventh message to the first network element, the seventh message includes the first information; wherein the first information is used to identify the first terminal on the control plane.

[0178] In an eleventh aspect, an embodiment of the present disclosure provides a first terminal, including:

[0179] The fifth transceiver module is used to send a first message to the first network element via the second network element, where the first message includes second information, and the second information is used to identify the first terminal on the user plane.

[0180] In a twelfth aspect, an embodiment of the present disclosure provides a first network element, including:

[0181] one or more processors;

[0182] The first network element is used to execute the method described in the optional implementation manner of the first aspect.

[0183] In a thirteenth aspect, an embodiment of the present disclosure provides a second network element, including:

[0184] one or more processors;

[0185] The second network element executes the method described in the optional implementation of the second aspect or the third aspect.

[0186] In a fourteenth aspect, an embodiment of the present disclosure provides a third network element, including:

[0187] one or more processors;

[0188] Among them, the first network element is used to execute the method described in the optional implementation manner of the fourth aspect.

[0189] In a fifteenth aspect, an embodiment of the present disclosure provides a fourth network element, including:

[0190] one or more processors;

[0191] Among them, the first network element is used to execute the method described in the optional implementation manner of the fifth aspect.

[0192] In a sixteenth aspect, an embodiment of the present disclosure provides a first terminal, including:

[0193] one or more processors;

[0194] Among them, the first terminal is used to execute the method described in the optional implementation manner of the sixth aspect.

[0195] In a seventeenth aspect, an embodiment of the present disclosure provides a communication system, including: a first terminal and a first network element, wherein:

[0196] The first network element is configured to associate the first information and the second information of the first terminal;

[0197] The first information is used to identify the first terminal on the control plane, and the second information is used to identify the first terminal on the user plane.

[0198] In conjunction with some embodiments of the seventeenth aspect, in some embodiments, the method further includes: a second network element, wherein:

[0199] The first network element is further configured to receive a first message sent by the first terminal via the second network element, where the first message includes the second information.

[0200] In combination with some embodiments of the seventeenth aspect, in some embodiments, the first message is used to notify that the first user plane connection between the first terminal and the first network element is established, and the first message includes the second information.

[0201] In combination with some embodiments of the seventeenth aspect, in some embodiments, the first message is used to confirm the establishment of the first user plane connection between the first terminal and the first network element, and the first message includes the second information.

[0202] In combination with some embodiments of the seventeenth aspect, in some embodiments, the second information is information corresponding to a protocol data unit PDU session obtained by the first terminal.

[0203] In conjunction with some embodiments of the seventeenth aspect, in some embodiments, the method further includes: a second network element, wherein:

[0204] The first network element is further configured to send a second message to the second network element, where the second message is used to request the second information;

[0205] The first network element is further used to receive a third message sent by the second network element, where the third message includes the second information.

[0206] In conjunction with some embodiments of the seventeenth aspect, in some embodiments, the second message includes at least one of the following information:

[0207] the first information;

[0208] Information about PDU sessions;

[0209] The first indication information is used to indicate a request for the second information.

[0210] In combination with some embodiments of the seventeenth aspect, in some embodiments, the second information is included in the context of the first terminal stored in the second network element.

[0211] In conjunction with some embodiments of the tenth aspect, in some embodiments, the method further includes: a third network element, wherein:

[0212] The second network element is further configured to determine SM context information and PDU session information based on the first information, and send a fourth message to the third network element, where the fourth message is used to request the second information;

[0213] The second network element is further used to receive a fifth message sent by the third network element, where the fifth message includes the second information.

[0214] In conjunction with some embodiments of the seventeenth aspect, in some embodiments, the fourth message includes at least one of the following information:

[0215] Information about the SM context;

[0216] Information about the PDU session;

[0217] The second indication information is used to indicate a request for the second information.

[0218] In combination with some embodiments of the seventeenth aspect, in some embodiments, the second network element is further used to store the second information in the context of the first terminal.

[0219] In combination with some embodiments of the seventeenth aspect, in some embodiments, the first network element is further used to store the second information in the context of the first terminal.

[0220] In conjunction with some embodiments of the seventeenth aspect, in some embodiments, the method further includes: a fourth network element, wherein:

[0221] The first network element is further configured to send a sixth message to the fourth network element, where the sixth message is used to request the first information;

[0222] The first network element is further used to receive a seventh message sent by the fourth network element, where the seventh message includes the first information.

[0223] In conjunction with some embodiments of the seventeenth aspect, in some embodiments, the sixth message includes the following information:

[0224] the second information;

[0225] Information of the first network element.

[0226] In combination with some embodiments of the seventeenth aspect, in some embodiments, it also includes: a fifth network element, wherein the first information is obtained by the fourth network element from the fifth network element.

[0227] In combination with some embodiments of the seventeenth aspect, in some embodiments, the first network element is further used to store the first information in the context of the first terminal.

[0228] In aspect 18, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional implementation of any one of aspects 1 to 6.

[0229] In the nineteenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation manner of any one of the first to sixth aspects.

[0230] In the twentieth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation manner of any one of the first to sixth aspects.

[0231] In aspect 21, an embodiment of the present disclosure proposes a chip or a chip system, which includes a processing circuit for executing the method described in the optional implementation manner of any one of aspects 1 to 6 above.

[0232] It is understandable that the above-mentioned communication devices, communication systems, storage media, program products, and computer programs are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here. Among them, the communication device can be a terminal or a network element.

[0233] The present disclosure provides a communication method, a communication device, a communication system, and a storage medium. In some embodiments, the terms communication method and information processing method are interchangeable, the terms communication device and information processing device are interchangeable, and the terms information processing system and communication system are interchangeable.

[0234] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the embodiments of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0235] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0236] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present disclosure.

[0237] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0238] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0239] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0240] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include any combination of any multiple of A, B, C…, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0241] In some embodiments, descriptions such as "in one case A, in another case B," or "in response to one case A, in response to another case B," may include the following technical solutions depending on the situation: executing A independently of B (in some embodiments, A); executing B independently of A (in some embodiments, B); selectively executing A and B (in some embodiments, selecting between A and B); and executing both A and B (in some embodiments, A and B). The same applies when there are more branches, such as A, B, and C.

[0242] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different. For another example, if the description object is "information", then the "first configuration" and the "second configuration" can be the same information or different information, and their contents can be the same or different.

[0243] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0244] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0245] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0246] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0247] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0248] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be described as device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, languages ​​such as "uplink" and "downlink" can also be replaced with languages ​​corresponding to communication between terminals (for example, "side").

[0249] For example, an uplink channel, a downlink channel, etc. may be replaced by a side channel, and an uplink, a downlink, etc. may be replaced by a side link.

[0250] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0251] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0252] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0253] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0254] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0255] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0256] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0257] FIG1a is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0258] As shown in FIG. 1 a , a communication system 100 includes a terminal 101 and a network device 102 .

[0259] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0260] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0261] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0262] In some embodiments, the technical solutions of the embodiments of the present disclosure may be applicable to the Open RAN architecture. In this case, the interfaces between or within the network devices involved in the embodiments of the present disclosure may become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.

[0263] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be described as a control unit. The CU-DU structure can be used to split the protocol layer of the network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0264] In some embodiments, the access network device may be a single device, multiple devices, or a group of devices. The network element may be virtual or physical. The network device may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0265] In some embodiments, the core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a 6G Core Network (6GCN), and a Next Generation Core (NGC).

[0266] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0267] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1a, or a portion thereof, but are not limited thereto. The entities shown in FIG1a are illustrative only. The communication system may include all or a portion of the entities shown in FIG1a, or may include other entities other than those shown in FIG1a. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0268] The embodiments of the present disclosure may be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G New Radio (NR), 6th generation mobile communication system (6G), Future Radio Access (FRA), New Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0269] In some examples, a location management function (LMF) or a user equipment (UE) may trigger the establishment of a user plane connection, and the UE and the LMF may maintain the established user plane connection.

[0270] Specifically, in some embodiments, the LMF triggers the process of establishing a user connection with the UE. The LMF can send the user plane information of the LMF (i.e., Internet Protocol (IP) address or fully qualified domain name (FQDN)) to the UE via the downlink non-access stratum transport (DL NAS TRANSPORT) message of the access and mobility management function (AMF). If the LMF sends the FQDN of the LMF to the UE, the UE can use the Domain Name System (DNS) server / resolver to resolve the IP address of the LMF (e.g., Edge Application Server Discovery Function (EASDF) or local DNS for local LMF address resolution). The UE uses the UE Route Selection Policy (URSP) including user plane positioning-related PDU session parameters (e.g., dedicated data network name (DNN) and single network slice selection assistance information (S-NSSAI)) to establish a packet data unit (PDU) session for user plane positioning. The Session Management Function (SMF) selects a PDU Session Anchor User Plane Function (PSA UPF) connected to the LMF for the PDU session based on the S-NSSAI, DNN, and UE location information.

[0271] In some examples, FIG1b shows a flow chart of a process of establishing a user plane connection initiated by the network side. The method shown in FIG1b includes:

[0272] S111. When the LMF determines to use LCS-UPP for user plane positioning and there is no established user plane connection, it sends an AMF communication N1N2 transmission (Namf_Communication_N1N2MessageTransfer) message to the AMF to deliver the user plane connection establishment command (User plane connection establishment command) message.

[0273] S112. The AMF sends a downlink non-access layer transport (DL NAS TRASPORT) message to the UE, where the payload container in the message includes a user plane connection establishment command.

[0274] S113. The UE establishes a user plane connection with the LMF using the LMF LCS-UP address in the user plane connection establishment command.

[0275] S114. The UE sends an uplink non-access layer transport (UL NAS TRASPORT) message to the AMF, where the payload container of the message includes a user plane connection establishment complete message.

[0276] S115. AMF sends a user plane connection establishment completion message and / or UE ID to LMF through the AMF communication N1 notification (Namf_Communication_N1MessageNotify) message.

[0277] In other examples, FIG1c shows a flow chart of a process of establishing a user plane connection initiated by the UE side. The method shown in FIG1c includes:

[0278] S121. The UE requests to establish a user plane connection for user plane positioning and sends an uplink non-access stratum transport (UL NAS TRASPORT) message to the AMF, which includes a user plane connection establishment request.

[0279] S122. The AMF selects an LMF for the UE and sends a user plane connection establishment request message to the selected LMF through the AMF communication N1 notification (Namf_Communication_N1MessageNotify) message.

[0280] S123. When the LMF accepts user plane positioning using LCS-UPP and there is no established user plane connection, it sends an AMF communication N1N2 transfer (Namf_Communication_N1N2MessageTransfer) message to the AMF to deliver the user plane connection establishment response (user plane connection establishment response) (or user plane connection establishment command).

[0281] S124. The AMF sends a downlink non-access layer transport (DL NAS TRASPORT) message to the UE, where the payload container in the message includes a user plane connection establishment response (or a user plane connection establishment command).

[0282] S125. The UE establishes a user plane connection with the LMF using the LMF LCS-UP address in the user plane connection establishment command. Optionally, after the user plane connection establishment is complete, the UE sends an uplink non-access stratum transport (UL NAS TRASPORT) message to the AMF, in which the payload container includes a user plane connection establishment complete message. The AMF sends the user plane connection establishment complete message and / or the UE ID to the LMF via an AMF communication N1 notification (Namf_Communication_N1MessageNotify) message.

[0283] In some embodiments, in the control plane, the LMF may use the UE's SUPI to identify the UE. For example, the AMF may send the UE's SUPI to the LMF, and the LMF may use the SUPI to identify the UE.

[0284] In some embodiments, the UE ID includes at least one of a SUPI (Subscription Permanent Identifier), a GPSI (Generic Public Subscription Identifier), and an application layer ID.

[0285] In other embodiments, during the user plane connection establishment process, the LMF may send the LMF LCS-UP address to the UE via the AMF. The LMF LCS-UP address may be the IP address (IPv4, IPv6, or IPv4 / IPv4v6) or FQDN of the LMF. Therefore, before the user plane connection establishment step, the UE can obtain the LMF address, but the LMF cannot obtain the UE's IP address.

[0286] When establishing a user plane connection, the LMF can obtain the IP address of the UE establishing the user plane connection, but the LMF cannot associate the UE with the IP address establishing the user plane connection with the UE ID used to send or receive control plane messages. Therefore, the LMF cannot associate the IP address and UE ID of the same UE.

[0287] Therefore, the solution provided by the embodiment of the present disclosure provides a method for associating the IP address of the UE used in the user plane with the UE ID used in the control plane.

[0288] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0289] Based on the above wireless communication system, various embodiments of the communication method proposed in the present disclosure are described in detail below.

[0290] FIG2a is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2a , the communication method is used in a communication system 100, and the method includes:

[0291] S201-1. A first terminal sends a first message to a second network element.

[0292] In some embodiments, the second network element may be an AMF.

[0293] In some embodiments, the first message includes second information of the first terminal, where the second information is used to identify the first terminal in a user plane.

[0294] In some embodiments, the second information may be an address of the first terminal. Optionally, the address of the first terminal may be a UE IP address.

[0295] In some embodiments, the UE IP address may be an address of the following types, such as IPv4, IPv6, or IPv4v6.

[0296] In some embodiments, the second information is acquired by the first terminal.

[0297] In some embodiments, the first terminal may obtain the second information during a protocol data unit (PDU) session establishment process.

[0298] Optionally, the first terminal may obtain an IP address allocated by the SMF or UPF during the PDU session establishment process, that is, the UE IP address is the IP address corresponding to a certain PDU session.

[0299] In some embodiments, the first message is used to notify the first terminal that the first user plane connection between the first terminal and the first network element is established. Optionally, the second information may be carried in the first message.

[0300] In some embodiments, the first message may be a user plane connection establishment complete message. Optionally, the second information is carried in the user plane connection establishment complete message.

[0301] Exemplarily, the second information may be carried in the user plane establishment completion command message carried in the message sent in step 114 as shown in FIG. 1 b .

[0302] In some embodiments, the first message carries the first notification information and the second information.

[0303] Optionally, the first notification information is used to notify that establishment of the first user plane connection between the first terminal and the first network element is complete.

[0304] Exemplarily, the user plane establishment completion command message and the second information may be carried in the message sent in step 114 as shown in FIG. 1 b .

[0305] In some embodiments, the first message is used to confirm the establishment of a first user plane connection between the first terminal and the first network element. Optionally, the second information may be carried in the first message.

[0306] In some embodiments, the first message may be a user plane connection establishment acknowledgement message. Optionally, the second information is carried in the user plane connection establishment acknowledgement message.

[0307] Exemplarily, after step 125 as shown in FIG. 1 c , the second information may be carried in the message sent.

[0308] In some embodiments, the first message carries the first notification information and the second information.

[0309] Optionally, the first notification information is used to notify the first terminal and the first network element of the confirmation of establishment of the first user plane connection.

[0310] In some embodiments, the first message may be carried by an uplink non-access stratum transport (UL NAS TRASPORT) message, but the name of the message is not limited thereto.

[0311] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", and "data" can be used interchangeably.

[0312] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0313] S201-2. The second network element sends a first message to the first network element.

[0314] In some embodiments, the first network element may be a LMF, or a SF (Sensing Function), or an enhanced LMF.

[0315] In some embodiments, the first message may be carried by an AMF communication N1 notification (Namf_Communication_N1MessageNotify) message, but the name of the message is not limited thereto.

[0316] In some embodiments, the first message carries first information of the first terminal.

[0317] In some embodiments, the first information of the first terminal is used to identify the first terminal on the control plane.

[0318] In some embodiments, the first information may be an identifier of the first terminal. Optionally, the identifier of the first terminal includes at least one of a SUPI (Subscription Permanent Identifier), a GPSI (Generic Public Subscription Identifier), and an application layer ID.

[0319] Exemplarily, the message sent in step 115 as shown in FIG. 1 b carries the first information of the first terminal.

[0320] In some embodiments, if the first message is used to notify that the first user plane connection between the first terminal and the first network element is established, the second information may be carried in the first message.

[0321] Exemplarily, the second information may be carried in the user plane establishment completion command message carried in the message sent in step 115 as shown in FIG. 1 b .

[0322] In some embodiments, if the first message is used to confirm the establishment of the first user plane connection between the first terminal and the first network element, the second information may be carried in the first message.

[0323] In some embodiments, the first message may carry first notification information and second information, wherein the first notification information is used to notify that the establishment of the first user plane connection between the first terminal and the first network element is complete.

[0324] Exemplarily, the user plane establishment completion command message and the second information may be carried in the message sent in step 115 as shown in FIG. 1 b .

[0325] In some embodiments, the first message may carry first notification information and second information, wherein the first notification information is used to confirm the establishment of the first user plane connection between the first terminal and the first network element.

[0326] S202: The first network element associates the first information and the second information of the first terminal.

[0327] In some embodiments, the first network element obtains the first information and the second information of the first terminal based on the first message, and associates the two.

[0328] In some embodiments, the first network element may store the second information in the context of the first terminal.

[0329] In some embodiments, associating the first information of the first terminal with the second information can also be understood as binding the two so as to identify that the two belong to the same UE, or to identify the same PDU session of the UEs corresponding to the two.

[0330] FIG2b is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2b , the communication method is used in a communication system 100, and the method includes:

[0331] S210. The first terminal establishes a user plane connection with the first network element.

[0332] In some embodiments, the first network element may be a LMF, or a SF, or an enhanced LMF.

[0333] In this embodiment, step S210 can be implemented by steps S111 to S115 in FIG. 1 b or steps S121 to S125 in FIG. 1 c , which will not be repeated here for the sake of brevity.

[0334] In some embodiments, the first network element may obtain the first information of the first terminal through step S115 in FIG. 1b or step S125 in FIG. 1c .

[0335] In some embodiments, the first information of the first terminal is used to identify the first terminal on the control plane.

[0336] In some embodiments, the first information may be an identifier of the first terminal. Optionally, the identifier of the first terminal includes at least one of SUPI, GPSI, and application layer ID.

[0337] S211. The first network element sends a second message to the second network element.

[0338] In some embodiments, the first network element may be a LMF, or a SF, or an enhanced LMF.

[0339] In some embodiments, the second network element may be an AMF.

[0340] In some embodiments, the second message is used to request second information of the first terminal, where the second information is used to identify the first terminal in a user plane.

[0341] In some embodiments, the second information may be an address of the first terminal. Optionally, the address of the first terminal may be a UE IP address.

[0342] In some embodiments, the UE IP address may be an address of the following types, such as IPv4, IPv6, or IPv4v6.

[0343] In some embodiments, the second message is a request message.

[0344] In some embodiments, the second message includes at least one of the following information:

[0345] first information of the first terminal, used to identify the first terminal on the control plane;

[0346] Information about PDU sessions;

[0347] The first indication information is used to indicate a request for second information of the first terminal.

[0348] In some embodiments, the first information may be an identifier of the first terminal. Optionally, the identifier of the first terminal includes at least one of SUPI, GPSI, and application layer ID.

[0349] In some embodiments, the information of the PDU session may be an identifier of the PDU session (eg, a PDU session ID).

[0350] In some embodiments, the first indication information may also be indication information for requesting the second information of the first terminal, for example, an IP address indication is used to indicate the requested UE IP address.

[0351] In some embodiments, the second information may be included in the context of the first terminal stored in the second network element.

[0352] Optionally, if the second information of the first terminal is stored in the context of the first terminal stored in the second network element, then after receiving the second message, the second network element can search for the corresponding second information from the stored context of the first terminal based on the information included in the second message and return it to the first network element.

[0353] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", and "data" can be used interchangeably.

[0354] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0355] S212. The second network element sends a third message to the first network element.

[0356] In some embodiments, the third message is a response message for responding to the second message.

[0357] In some embodiments, the third message includes the second information of the first terminal.

[0358] In some embodiments, the second information may be included in the context of the first terminal stored in the second network element.

[0359] Optionally, if the second information of the first terminal is stored in the context of the first terminal stored in the second network element, then after receiving the second message, the second network element can search for the corresponding second information from the stored context of the first terminal based on the information included in the second message, and return the second information to the first network element through a third message.

[0360] In some embodiments, if the context of the first terminal stored by the second network element does not store the second information of the first terminal, or the second information of the first terminal does not belong to part of the context of the first terminal, the above method may further include:

[0361] S214. The second network element sends a fourth message to the third network element.

[0362] In some embodiments, the fourth message is used to request second information of the first terminal.

[0363] In some embodiments, the third network element may be an SMF.

[0364] Optionally, if the second information of the first terminal is not stored in the context of the first terminal stored in the second network element, the second network element determines the SM context information and the PDU session information based on the information in the second message, and sends a fourth message to the third network element.

[0365] In some embodiments, the fourth message includes at least one of the following information:

[0366] SM context information;

[0367] Information about PDU sessions;

[0368] The second indication information is used to indicate a request for second information of the first terminal.

[0369] In some embodiments, the information of the SM context may be an SM context ID.

[0370] In some embodiments, the information of the PDU session may be an identifier of the PDU session (eg, a PDU session ID).

[0371] In some embodiments, the second indication information may also be indication information for requesting the second information of the first terminal, for example, the SM context type may indicate the requested UE IP address.

[0372] In some embodiments, the fourth message may be an SMF PDU session context request (Nsmf_PDUSessionContext Request) message, but the name of the message is not limited thereto.

[0373] S215. The third network element sends a fifth message to the second network element.

[0374] In some embodiments, the fifth message is a response message for responding to the fourth message.

[0375] In some embodiments, the fifth message includes the second information of the first terminal.

[0376] In some embodiments, the fourth message may be an SMF PDU session context response (Nsmf_PDUSessionContextResponse) message, but the name of the message is not limited thereto.

[0377] In some embodiments, the second network element receives a fifth message sent by the third network element.

[0378] Optionally, the second network element obtains the second information carried in the fifth message.

[0379] In some embodiments, the third network element searches for the corresponding second information from the context of the first terminal based on the information included in the received third message, and returns the second information to the second network element through the fifth message, so that the second network element returns the second information to the first network element through the third message.

[0380] In some embodiments, the second network element may store the second information in the context of the first terminal.

[0381] S213. The first network element associates the first information and the second information of the first terminal.

[0382] In some embodiments, the first network element associates the acquired first information of the first terminal with the second information.

[0383] In some embodiments, the first information of the first terminal is used to identify the first terminal on the control plane.

[0384] In some embodiments, the first information may be an identifier of the first terminal. Optionally, the identifier of the first terminal includes at least one of SUPI, GPSI, and application layer ID.

[0385] In some embodiments, the first network element may store the second information in the context of the first terminal.

[0386] The method involved in the embodiment of the present disclosure may include at least one of steps S211 to S215. For example, step S213 may be implemented as an independent embodiment, and steps S211, S212, and S213 may be implemented as independent embodiments, but are not limited thereto.

[0387] In some embodiments, steps S214 and S215 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0388] FIG2c is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2c, the communication method is used in a communication system 100, and the method includes:

[0389] S220. The user plane connection between the first terminal and the first network element is established.

[0390] In some embodiments, the first network element may be a LMF, or a SF, or an enhanced LMF.

[0391] In this embodiment, step S220 can be implemented by steps S111 to S113 in FIG. 1 b or steps S121 to S125 in FIG. 1 c , and for the sake of brevity, details are omitted here.

[0392] In some embodiments, the first network element may obtain the second information of the first terminal through step S113 in FIG. 1b or step S125 in FIG. 1c .

[0393] S221. The first network element sends a sixth message to the fourth network element.

[0394] In some embodiments, the fourth network element may be a NEF (Network Exposure Function).

[0395] In some embodiments, the sixth message is used to request first information of the first terminal, where the first information is used to identify the first terminal on the control plane.

[0396] In some embodiments, the first information may be an identifier of the first terminal. Optionally, the identifier of the first terminal includes at least one of SUPI, GPSI, and application layer ID.

[0397] In some embodiments, the sixth message is a request message.

[0398] In some embodiments, the sixth message includes at least one of the following information:

[0399] second information of the first terminal, used to identify the first terminal on a user plane;

[0400] Information of the first network element.

[0401] In some embodiments, the second information may be an address of the first terminal. Optionally, the address of the first terminal may be a UE IP address.

[0402] In some embodiments, the UE IP address may be an address of the following types, such as IPv4, IPv6, or IPv4v6.

[0403] In some embodiments, the information of the first network element may be an identifier of the first network element.

[0404] In some embodiments, the sixth message may be carried by an NEF UE ID acquisition request (Nnef_UEId_Get request) message.

[0405] S222. The fourth network element sends a seventh message to the first network element.

[0406] In some embodiments, the seventh message is a response message for responding to the sixth message.

[0407] In some embodiments, the seventh message includes first information of the first terminal.

[0408] In some embodiments, the first information is obtained by the fourth network element from the fifth network element.

[0409] In some embodiments, the fifth network element may be a UPF (User Plane Function) or a BSF (Binding Support Function).

[0410] In some embodiments, the fourth network element may request the fifth network element to provide the first information of the first terminal.

[0411] In some embodiments, the seventh message may be carried by an NEF UE ID acquisition response (Nnef_UEId_Get response) message.

[0412] S223. The first network element associates the first information and the second information of the first terminal.

[0413] In some embodiments, the first network element associates the acquired first information of the first terminal with the second information.

[0414] In some embodiments, the first information of the first terminal is used to identify the first terminal on the control plane.

[0415] In some embodiments, the first information may be an identifier of the first terminal. Optionally, the identifier of the first terminal includes at least one of SUPI, GPSI, and application layer ID.

[0416] In some embodiments, the first network element may store the first information in the context of the first terminal.

[0417] FIG3 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3 , the communication method may be executed by a first network element, and the method includes:

[0418] S301: Associate first information and second information of a first terminal.

[0419] In some embodiments, the first information is used to identify the first terminal on a control plane, and the second information is used to identify the first terminal on a user plane.

[0420] The optional implementation of step S301 can refer to the optional implementation of step S202 in Figure 2a, the optional implementation of step S213 in Figure 2b, the optional implementation of step S223 in Figure 2c, and other related parts in the embodiments involved in Figures 2a-2c, which will not be repeated here.

[0421] In some embodiments, the first information may be an identifier of the first terminal. Optionally, the identifier of the first terminal includes at least one of SUPI, GPSI, and application layer ID.

[0422] In some embodiments, the second information may be an address of the first terminal. Optionally, the address of the first terminal may be a UE IP address.

[0423] In some embodiments, the UE IP address may be an address of the following types, such as IPv4, IPv6, or IPv4v6.

[0424] In some embodiments, the above method may further include:

[0425] A first message sent by the first terminal is received via a second network element, where the first message includes the second information.

[0426] In some embodiments, the first message is used to notify that establishment of a first user plane connection between the first terminal and the first network element is complete, and the second information is carried in the first message;

[0427] or,

[0428] The first message carries first notification information and the second information, wherein the first notification information is used to notify that the first user plane connection between the first terminal and the first network element is established.

[0429] In some embodiments, the first message is used to confirm establishment of a first user plane connection between the first terminal and the first network element, and the second information is carried in the first message;

[0430] or,

[0431] The first message carries first notification information and the second information, wherein the first notification information is used to confirm the establishment of a first user plane connection between the first terminal and the first network element.

[0432] In some embodiments, the second information is information corresponding to the PDU session obtained by the first terminal.

[0433] The above optional implementation methods can refer to the optional implementation methods of steps S201-1 and S201-2 in Figure 2a, and other related parts in the embodiment involved in Figure 2a, which will not be repeated here.

[0434] In some embodiments, the above method may further include:

[0435] Sending a second message to the second network element, where the second message is used to request the second information;

[0436] Receive a third message sent by the second network element, where the third message includes the second information.

[0437] In some embodiments, the second message includes at least one of the following information:

[0438] the first information;

[0439] Information about PDU sessions;

[0440] The first indication information is used to indicate a request for the second information.

[0441] In some embodiments, the second information is included in the context of the first terminal stored in the second network element.

[0442] In some embodiments, the second information is obtained by the second network element from a third network element.

[0443] In some embodiments, the above method may further include: storing the second information in the context of the first terminal.

[0444] The above optional implementation methods can refer to the optional implementation methods of step S211 and step S212 in Figure 2b, and other related parts in the embodiment involved in Figure 2b, which will not be repeated here.

[0445] In some embodiments, the above method may further include:

[0446] sending a sixth message to the fourth network element, where the second message is used to request the first information;

[0447] Receive a seventh message sent by the fourth network element, where the seventh message includes the first information.

[0448] In some embodiments, the sixth message includes the following information:

[0449] the second information;

[0450] Information of the first network element.

[0451] In some embodiments, the first information is obtained by the fourth network element from a fifth network element.

[0452] In some embodiments, the above method may further include: storing the first information in the context of the first terminal.

[0453] The above optional implementation methods can refer to the optional implementation methods of step S221 and step S222 in Figure 2c, and other related parts in the embodiment involved in Figure 2c, which will not be repeated here.

[0454] FIG4a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4a , the communication method may be executed by a second network element, and the method includes:

[0455] S401: Transmit a first message from a first terminal to a first network element, where the first message includes second information, and the second information is used to identify the first terminal on a user plane.

[0456] Optional implementations of step S401 can refer to the optional implementations of steps S201-1 and S201-2 in FIG2a, and other related parts in the embodiment involved in FIG2a, which will not be described in detail here.

[0457] In some embodiments, the first message is used to notify that establishment of a first user plane connection between the first terminal and the first network element is complete, and the second information is carried in the first message;

[0458] or,

[0459] The first message carries first notification information and the second information, wherein the first notification information is used to notify that the first user plane connection between the first terminal and the first network element is established.

[0460] In some embodiments, the first message is used to confirm establishment of a first user plane connection between the first terminal and the first network element, and the second information is carried in the first message;

[0461] or,

[0462] The first message carries first notification information and the second information, wherein the first notification information is used to confirm the establishment of a first user plane connection between the first terminal and the first network element.

[0463] In some embodiments, the second information is information corresponding to the PDU session obtained by the first terminal.

[0464] In some embodiments, the above method may further include:

[0465] The second information is stored in the context of the first terminal.

[0466] FIG4b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4b , the communication method may be executed by a second network element, and the method includes:

[0467] S411. Receive a second message sent by a first network element, where the second message is used to request second information of a first terminal.

[0468] The optional implementation of step S411 can refer to the optional implementation of step S211 in Figure 2b and other related parts in the embodiment involved in Figure 2b, which will not be repeated here.

[0469] S412. Send a third message to the first network element, where the third message includes the second information.

[0470] The optional implementation of step S412 can refer to the optional implementation of step S212 in Figure 2b and other related parts in the embodiment involved in Figure 2b, which will not be repeated here.

[0471] In some embodiments, the second message includes at least one of the following information:

[0472] The first information of the first terminal is used to identify the first terminal on the control plane;

[0473] Information about PDU sessions;

[0474] The first indication information is used to indicate a request for the second information.

[0475] In some embodiments, the second information is included in the context of the first terminal stored in the second network element.

[0476] In some embodiments, before step S412, the method may further include:

[0477] determining SM context information and PDU session information according to the first information, and sending a fourth message to a third network element, where the fourth message is used to request the second information;

[0478] Receive a fifth message sent by the third network element, where the fifth message includes the second information.

[0479] In some embodiments, the fourth message includes at least one of the following information:

[0480] Information about the SM context;

[0481] Information about the PDU session;

[0482] The second indication information is used to indicate a request for the second information.

[0483] The above optional implementation can refer to the optional implementation of step S214-step S215 in Figure 2b and other related parts in the embodiment involved in Figure 2b, which will not be repeated here.

[0484] In some embodiments, the above method may further include:

[0485] The second information is stored in the context of the first terminal.

[0486] The communication method may also be performed by a third network element, and the method includes:

[0487] receiving a fourth message sent by the second network element, where the fourth message is used to request second information of the first terminal;

[0488] Send a fifth message to the second network element, where the fifth message includes the second information.

[0489] In some embodiments, the second information is used to identify the first terminal in a user plane.

[0490] The above implementation can refer to the optional implementation of step S214-step S215 in Figure 2b and other related parts in the embodiment involved in Figure 2b, which will not be repeated here.

[0491] FIG5 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5 , the communication method may be executed by a fourth network element, and the method includes:

[0492] S501: Receive a sixth message sent by a first network element, where the sixth message is used to request first information of a first terminal.

[0493] The optional implementation of step S501 can refer to the optional implementation of step S221 in Figure 2c and other related parts in the embodiment involved in Figure 2c, which will not be repeated here.

[0494] S502. Send a seventh message to the first network element, where the seventh message includes the first information.

[0495] In some embodiments, the first information is used to identify the first terminal on a control plane.

[0496] The optional implementation of step S502 can refer to the optional implementation of step S222 in Figure 2c and other related parts in the embodiment involved in Figure 2c, which will not be repeated here.

[0497] In some embodiments, the sixth message includes the following information:

[0498] The second information of the first terminal is used to identify the first terminal on a user plane;

[0499] Information of the first network element.

[0500] In some embodiments, the first information is obtained by the fourth network element from a fifth network element.

[0501] FIG6 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG6 , the communication method can be executed by a first terminal, and the method includes:

[0502] S601. Send a first message to a first network element via a second network element, where the first message includes second information, and the second information is used to identify the first terminal on a user plane.

[0503] The optional implementation of step S601 can refer to the optional implementation of step S201-1 in Figure 2a and other related parts in the embodiment involved in Figure 2a, which will not be repeated here.

[0504] In some embodiments, the first message is used to notify that the first user plane connection between the first terminal and the first network element is established, and the first message includes the second information.

[0505] In some embodiments, the first message is used to confirm the establishment of a first user plane connection between the first terminal and the first network element, and the first message includes the second information.

[0506] In some embodiments, the above method may further include:

[0507] Obtain the second information corresponding to the PDU session.

[0508] In some embodiments, the first terminal may obtain the second information during the PDU session establishment process.

[0509] Optionally, the first terminal may obtain an IP address allocated by the SMF or UPF during the PDU session establishment process, that is, the UE IP address is the IP address corresponding to a certain PDU session.

[0510] The present disclosure also provides an optional implementation scheme, where the LMF queries the UE ID from the NEF by using the UE IP address.

[0511] In some embodiments, the communication method may include:

[0512] After the UE establishes a user plane connection with the LMF, the LMF sends an acquisition request message to the NEF. The acquisition request message includes the UE's IP address and is used to request the UE ID corresponding to the IP address.

[0513] The LMF receives the acquisition response message sent by the NEF, where the acquisition response message includes the UE ID;

[0514] The LMF associates the IP address of the UE with the UE ID.

[0515] In some embodiments, the method shown in FIG. 7 a may include:

[0516] S700: The user plane connection between the UE and the LMF is established.

[0517] Optionally, in this embodiment, step S700 may be implemented by steps S111-S113 in FIG. 1 b or steps S121-S125 in FIG. 1 c , which will not be described again for the sake of brevity.

[0518] S701. LMF requests to query UE ID (which may correspond to the first information above) through NEF UE ID acquisition request (Nnef_UEId_Get request) message (which may correspond to the sixth message above).

[0519] Optionally, the request message includes the UE address (which may correspond to the second information above, such as an IP address or a MAC address) and an LMF identifier, and may also include a port number associated with the IP address, IP domain, DNN and / or S-NSSAI.

[0520] S702. NEF (which may correspond to the fourth network element mentioned above) identifies the request message from LMF and authorizes LMF.

[0521] Optionally, if the NEF has received the port number in step S701, based on the configuration, the NEF can determine whether the received address is an IP address different from the actual dedicated UE IP address assigned by the 5GC, that is, the UE is behind NAT in the UPF. If so, the NEF executes steps S703 to S706. Otherwise, steps S703 to S706 are skipped.

[0522] S703. The NEF uses an NRF NF discovery request (Nnrf_NFDiscovery request) message to obtain the address of the UPF that implements the NAT function of the UE (public) IP address.

[0523] Optionally, the request message includes the UE (public) IP address and may also include at least one of the DNN and S-NSSAI associated with the LMF ID and the IP domain.

[0524] S704. The NRF responds with an NRF NF discovery response (Nnrf_NFDiscovery response) message.

[0525] Optionally, the response message includes the UPF address that implements the NAT function of the UE (public) IP address.

[0526] S705. The NEF uses the UPF to obtain the UE private IP address and identifier acquisition request (Nupf_GetUEPrivateIPaddrAndIdentifiers_Get request) message to request the UPF for the UE's (private) IP address.

[0527] Optionally, the request message includes the UE (public) IP address and port number, and may also include at least one of the IP domain, DNN and S-NSSAI associated with the LMF ID.

[0528] S706. The UPF responds with a UPF obtain response (Nupf_GetUEPrivateIPaddrAndIdentifiers_Get response) message.

[0529] Optionally, the response message includes the IP address of the UE and an optional IP domain.

[0530] Optionally, if the UPF has applied the NAT function, the UE IP address returned by the UPF is a private UE IP address.

[0531] Optionally, if the IP domain of the UE private IP address is returned from the UPF, regardless of whether the LMF provides the IP domain information in step 701, the IP domain returned from the UPF is always used first.

[0532] Alternatively, if the UPF has the SUPI or GPSI of the UE, the UPF may return the SUPI or GPSI and skip steps S707-S708 in this case.

[0533] S707. The NEF uses a BSF management discovery request (Nbsf_Management_Discovery request) message to query the session binding information of the UE.

[0534] Optionally, the request message includes: UE IP address, and may also include at least one of the DNN and S-NSSAI associated with the LMF ID and the IP domain.

[0535] S708. The BSF responds with a BSF management discovery response (Nbsf_Management_Discovery response) message.

[0536] Optionally, the response message includes session binding information.

[0537] Optionally, if the NEF does not receive the SUPI from the BSF in the session binding information, it replies to the LMF with a value indicating that the UE ID is not available.

[0538] S709. The NEF uses an Nnef_UEId_Get response message (which may correspond to the seventh message above) to send the SUPI or GPSI received from the UPF in step S706, or the SUPI or GPSI received from the BSF in step S708, to the LFM.

[0539] S710. The LMF receives a UE ID (eg, SUPI or GPSI) and associates the UE address with the UE ID.

[0540] Optionally, the LMF may also save the UE ID as part of the UE context.

[0541] The present disclosure also provides an optional implementation scheme, where the UE can report the UE's IP address to the LMF while sending a user plane establishment completion message to the LMF.

[0542] In some embodiments, the communication method may include:

[0543] The UE sends a user plane establishment completion message to the LMF, where the user plane establishment completion message includes the UE's IP address and UE ID;

[0544] The LMF receives the user plane establishment completion message sent by the UE and obtains the UE's IP address and UE ID;

[0545] The LMF associates the obtained UE IP address with the UE ID.

[0546] In some embodiments, the UE may obtain an IP address during the PDU session establishment process.

[0547] Optionally, the UE can obtain an IP address allocated by the SMF or UPF during the PDU session establishment process.

[0548] In some embodiments, the method shown in FIG. 7b may include:

[0549] S711. When LMF determines to use LCS-UPP for user plane positioning and there is no established user plane connection, it sends an AMF communication N1N2 transmission (Namf_Communication_N1N2MessageTransfer) message to AMF to convey the user plane connection establishment command.

[0550] S712. The AMF sends a downlink non-access layer transport (DL NAS TRASPORT) message to the UE, where the payload container in the message includes a user plane connection establishment command.

[0551] S713. The UE establishes a user plane connection with the LMF using the LMF LCS-UP address in the user plane connection establishment command.

[0552] Before the user plane connection is established, if there is no applicable PDU session for user plane positioning, the UE uses the URSP including the PDU session parameters related to user plane positioning (e.g., dedicated DNN and S-NSSAI) to establish a PDU session for user plane positioning. During the PDU session establishment process, the SMF or UPF will allocate an IP address to the UE. If there is an available established PDU session, it means that the UE has performed the PDU session establishment process and obtained an IP address.

[0553] After the PDU session is prepared, the UE establishes a user plane connection for LCS-UPP using the LMF LCS-UP address in the user plane connection establishment command.

[0554] S714. The UE sends a user plane connection establishment complete message and the UE IP address to the AMF.

[0555] Optionally, the user plane connection establishment completion message may be carried by an uplink non-access stratum transport (UL NAS TRASPORT) message.

[0556] Optionally, the UE may include the UE IP address in a user plane connection establishment complete message (e.g., UL NAS TRANSPORT (User Plane Connection Establishment Complete Message (UE IP Address))). That is, the user plane connection establishment complete message is carried by the UL NAS TRANSPORT, and the UE IP address is included in the user plane connection establishment complete message.

[0557] Optionally, the UE may also send a user plane connection setup complete message with the UE IP address (eg, UL NAS TRANSPORT (user plane connection setup complete message, UE IP address)). That is, both the user plane connection setup complete message and the UE IP address are carried by the UL NAS TRANSPORT.

[0558] S715. AMF sends a user plane connection establishment completion message and UE IP address to LMF through the AMF communication N1 notification (Namf_Communication_N1MessageNotify) message.

[0559] Optionally, the UE IP address is included in a user plane connection establishment completion message (eg, Namf_Communication_N1MessageNotify (user plane connection establishment completion message (UE IP address))).

[0560] Optionally, a user plane connection establishment completion message Namf_Cmmunication_N1MessageNotify (user plane connection establishment completion message, UE IP address) with the UE IP address is sent.

[0561] Optionally, the message used to carry the user plane connection establishment completion message and the UE IP address may correspond to the first message mentioned above.

[0562] S716. The LMF receives the UE address (eg, UE IP address) and the UE ID (eg, SUPI), and the LMF may associate the UE address with the UE ID.

[0563] Optionally, the LMF may save the UE address as part of the UE context.

[0564] The present disclosure also provides an optional implementation scheme, where the UE can send the UE's IP address to the LMF after establishing a user plane connection with the LMF.

[0565] In some embodiments, the communication method may include:

[0566] The UE sends a user plane establishment confirmation message to the LMF, where the user plane establishment confirmation message includes the UE's IP address and UE ID;

[0567] The LMF receives the user plane establishment confirmation message sent by the UE and obtains the UE's IP address and UE ID;

[0568] The LMF associates the obtained UE IP address with the UE ID.

[0569] Optionally, the UE can obtain an IP address allocated by the SMF or UPF during the PDU session establishment process.

[0570] In some embodiments, the method shown in FIG. 7 c may include steps S721 - S728 .

[0571] Optionally, in this embodiment, the UE, LMF and AMF execute steps S121-S125 in Figure 1c to implement the user plane connection establishment process. For the sake of brevity of description, steps 721-725 are not repeated here.

[0572] S726. After establishing the user plane connection, the UE sends a user plane connection establishment confirmation message and the UE IP address to the AMF.

[0573] Optionally, the user plane connection establishment confirmation message may be carried by an uplink non-access stratum transport (UL NAS TRASPORT) message.

[0574] Optionally, the UE may include the UE IP address in a user plane connection establishment confirm message (e.g., UL NAS TRANSPORT (User Plane Connection Establishment Confirm Message (UE IP Address))). That is, the user plane connection establishment confirm message is carried by the UL NAS TRANSPORT, and the UE IP address is included in the user plane connection establishment confirm message.

[0575] Optionally, the UE may also send a user plane connection establishment confirmation message (UL NAS TRANSPORT (user plane connection establishment confirmation message, UE IP address)) with the UE IP address. That is, both the user plane connection establishment confirmation message and the UE IP address are carried by the UL NAS TRANSPORT.

[0576] S727. AMF sends a user plane connection establishment confirmation message and UE IP address to LMF through the AMF communication N1 notification (Namf_Communication_N1MessageNotify) message.

[0577] Optionally, the UE IP address is included in a user plane connection establishment confirmation message (eg, Namf_Communication_N1MessageNotify (user plane connection establishment confirmation message (UE IP address))).

[0578] Optionally, a user plane connection establishment confirmation message Namf_Cmmunication_N1MessageNotify (user plane connection establishment confirmation message, UE IP address) with the UE IP address is sent.

[0579] Optionally, the message used to carry the user plane connection establishment confirmation message and the UE IP address may correspond to the first message mentioned above.

[0580] S728. The LMF receives the UE address (eg, UE IP address) and the UE ID (eg, SUPI), and the LMF may associate the UE address with the UE ID.

[0581] Optionally, the LMF may save the UE address as part of the UE context.

[0582] The present disclosure also provides an optional implementation scheme, where LMF queries the UE IP address from SMF through AMF.

[0583] In some embodiments, the UPF or SMF can allocate the UE IP address, and the LMF can query the UE IP address from the SMF through the AMF.

[0584] In some embodiments, the communication method may include:

[0585] After the user plane connection between the UE and the LMF is established, the LMF obtains the UE ID of the UE;

[0586] The LMF sends a UE context transfer request message to the AMF, where the UE context transfer request message includes the UE ID, which is used to request the IP address of the UE corresponding to the UE ID;

[0587] The LMF receives the UE context transfer response message sent by the AMF, where the UE context transfer response message includes the IP address of the UE;

[0588] The LMF associates the IP address of the UE with the UE ID.

[0589] In some embodiments, after the AMF sends the UE context transfer response message to the LMF, it may also include:

[0590] The AMF determines the SM context information and PDU session information based on the UE ID;

[0591] The AMF sends a PDU session context request message to the SMF, where the PDU session context request message includes SM context information and PDU session information, and is used to request the IP address of the corresponding UE.

[0592] The AMF receives the PDU session context response message sent by the SMF, where the PDU session context response message includes the IP address of the UE.

[0593] In some embodiments, the method shown in FIG. 7d may include:

[0594] S731. The user plane connection between the UE and the LMF is established.

[0595] Optionally, in this embodiment, step S731 may be implemented by steps S111-S115 in FIG. 1 b or steps S121-S125 in FIG. 1 c , which will not be described again for the sake of brevity.

[0596] Optionally, the LMF receives a user plane connection establishment completion or confirmation message from the UE via the AMF. The LMF may obtain the UE ID of the UE from the user plane connection establishment completion or confirmation message.

[0597] S732. LMF sends a request message (which may correspond to the second message above) to AMF to request the IP address of the UE.

[0598] Optionally, the LMF may send at least one of a UE ID (e.g., SUPI and / or GPSI), a PDU session ID, and an IP address indication (which may correspond to the first indication information above) to the AMF to request the UE's IP address.

[0599] S733. If the IP address is part of the UE context, the AMF uses the received UE ID (e.g., SUPI) to query the UE context and obtain the IP address of the UE identified by the UE ID. The rest of step S733 and S734 will be skipped.

[0600] If the IP address is not part of the UE context, the AMF may use the received UE ID (e.g., SUPI) to determine the PDU session ID and SM context ID, and send an SMF PDU session context request (Nsmf_PDUSessionContext Request) message to the SMF (which may correspond to the fourth message above).

[0601] Optionally, the request message includes at least one of an SM context ID, an SM context type, and an optional PDU session ID, wherein the SM context type (which may correspond to the second indication information above) is used to indicate the requested UE IP address.

[0602] S734. SMF uses the received SM context ID to query the UE IP address in the UE context, and includes the UE IP address in the SMF PDU session context response (Nsmf_PDUSessionContextResponse) message (which can correspond to the fifth message above).

[0603] S735. AMF uses the response message of the request message in step S732 (which may correspond to the third message above) to send the IP address of the UE to the LMF.

[0604] Optionally, if the AMF receives the UE IP address from the SMF, the AMF may save the IP address as part of the UE context.

[0605] S736. The LMF receives the UE address (eg, UE IP address), and the LMF may associate the UE address with the UE ID.

[0606] Optionally, the LMF may save the UE address as part of the UE context.

[0607] FIG8a is a schematic diagram of the structure of a first network element proposed in an embodiment of the present disclosure. As shown in FIG8a, the first network element may include at least one of a first transceiver module 811 and a first processing module 812.

[0608] In some embodiments, the first processing module 812 associates the first information of the first terminal with the second information;

[0609] The first information is used to identify the first terminal on the control plane, and the second information is used to identify the first terminal on the user plane.

[0610] Optionally, the above-mentioned first transceiver module 811 is used to execute the steps related to sending and receiving signaling performed by the first network element in any of the above methods, for example: at least one of steps S201-2 shown in Figure 2a, steps S210, S211, S212 shown in Figure 2b, and steps S220, S221, S222 shown in Figure 2c, which are not repeated here.

[0611] FIG8b is a schematic diagram of the structure of the second network element proposed in an embodiment of the present disclosure. As shown in FIG8b , the second network element includes at least one of: a second transceiver module 821 , a second processing module 822 , and the like.

[0612] In some embodiments, the second transceiver module 821 is used to transmit a first message from a first terminal to a first network element, where the first message includes second information, and the second information is used to identify the first terminal on a user plane.

[0613] Optionally, the second transceiver module 821 is used to execute steps related to signaling transmission and reception performed by the second network element in any of the above methods, for example, at least one of steps S201-1 and S201-2 shown in Figure 2a, which will not be repeated here.

[0614] In some embodiments, the second transceiver module 821 is used to receive a second message sent by the first network element, where the second message is used to request second information of the first terminal, and is also used to send a third message to the first network element, where the third message includes the second information; wherein the second information is used to identify the first terminal on the user side.

[0615] Optionally, the second transceiver module 821 is used to execute steps related to signaling transmission and reception performed by the second network element in any of the above methods, for example, at least one of steps S211, S212, S214, and S215 shown in Figure 2b, which are not repeated here.

[0616] Figure 8c is a schematic diagram of the structure of a third network element proposed in an embodiment of the present disclosure. As shown in Figure 8c, the third network element may include: at least one of a third transceiver module 831, a third processing module 832, etc.

[0617] In some embodiments, the third transceiver module 831 is used to receive a fourth message sent by the second network element, wherein the fourth message is used to request second information of the first terminal, and is also used to send a fifth message to the second network element, wherein the fifth message includes the second information; wherein the second information is used to identify the first terminal on the user side.

[0618] Optionally, the third transceiver module 831 is used to execute steps related to signaling transmission and reception performed by the third network element in any of the above methods, for example, at least one of steps S214 and S215 shown in Figure 2b, which will not be repeated here.

[0619] FIG8 d is a schematic diagram of the structure of a fourth network element proposed in an embodiment of the present disclosure. As shown in FIG8 d , the fourth network element may include at least one of a fourth transceiver module 841 and a fourth processing module 842 .

[0620] In some embodiments, the fourth transceiver module 841 is used to receive a sixth message sent by the first network element, wherein the sixth message is used to request first information of the first terminal, and is also used to send a seventh message to the first network element, wherein the seventh message includes the first information; wherein the first information is used to identify the first terminal on the control plane.

[0621] Optionally, the fourth transceiver module 841 is configured to execute steps related to signaling transmission and reception performed by the fourth network element in any of the above methods, for example, at least one of steps S221 and S222 shown in FIG2c .

[0622] FIG8e is a schematic diagram of the structure of a first terminal according to an embodiment of the present disclosure. As shown in FIG8e , the first terminal may include at least one of a fifth transceiver module 851 and a fifth processing module 852 .

[0623] In some embodiments, the fifth transceiver module 851 is used to send a first message to the first network element via the second network element, where the first message includes second information, and the second information is used to identify the first terminal on the user plane.

[0624] Optionally, the fifth transceiver module 851 is used to execute steps related to sending and receiving signaling performed by the first terminal in any of the above methods, for example: at least one of step S201-1 shown in Figure 2a, step S210 shown in Figure 2b, and step S220 shown in Figure 2c, which are not repeated here.

[0625] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above units or modules are realized by designing the logical relationship of the elements in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be implemented by a programmable logic device (PLD), taking a field programmable gate array (FPGA) as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, thereby realizing the functions of some or all of the above units or modules.

[0626] All units or modules of the above devices can be implemented in the form of software called by the processor, or in the form of hardware circuits, or partially implemented in the form of software called by the processor, and the remaining part implemented in the form of hardware circuits. In the embodiment of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by a processor as an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0627] Figure 9a is a schematic diagram of the structure of a communication device 900 proposed in an embodiment of the present disclosure. Communication device 900 can be a network element (such as the first network element or second network element described above), a terminal (such as user equipment), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 900 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0628] As shown in Figure 9a, the communication device 900 includes one or more processors 901. The processor 901 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, baseband chip, terminal device, terminal device chip, DU or CU, etc.), execute programs, and process program data. The processor 901 is used to call instructions to enable the communication device 900 to perform any of the above methods.

[0629] In some embodiments, the communication device 900 further includes one or more transceivers 902. When the communication device 900 includes one or more transceivers 902, the transceiver 902 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, at least one of steps S201-1 and S201-2 shown in FIG. 2a , steps S210, S211, S212, S214, and S215 shown in FIG. 2b , and steps S220, S221, and S222 shown in FIG. 2c , but not limited thereto), and the processor 901 performs at least one of the other steps (for example, at least one of step S203 shown in FIG. 2a , step S213 shown in FIG. 2b , and step S223 shown in FIG. 2c , but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, terms such as transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface can be replaced with each other, terms such as transmitter, transmitting unit, transmitter, and transmitting circuit can be replaced with each other, and terms such as receiver, receiving unit, receiver, and receiving circuit can be replaced with each other.

[0630] In some embodiments, the communication device 900 further includes one or more memories 902 for storing instructions. Optionally, all or part of the memories 902 may be located outside the communication device 900.

[0631] In some embodiments, the communication device 900 further includes one or more transceivers 903. When the communication device 900 includes one or more transceivers 903, the communication steps such as sending and receiving in the above method are performed by the transceiver 903, and the other steps are performed by the processor 901.

[0632] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0633] Optionally, the communication device 900 further includes one or more interface circuits 904, which are connected to the memory 902. The interface circuits 904 may be configured to receive signals from the memory 902 or other devices, and may be configured to send signals to the memory 902 or other devices. For example, the interface circuits 904 may read instructions stored in the memory 902 and send the instructions to the processor 901.

[0634] The communication device 900 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 900 described in the embodiment of the present disclosure is not limited thereto, and the structure of the communication device 900 may not be limited by FIG. 9a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0635] FIG9 b is a schematic diagram of the structure of a chip 910 according to an embodiment of the present disclosure. If the communication device 900 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 910 shown in FIG9 b , but the present disclosure is not limited thereto.

[0636] The chip 910 includes one or more processors 911. The chip 910 is configured to execute any of the above methods.

[0637] In some embodiments, chip 910 also includes one or more interface circuits 912. Alternatively, terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 910 also includes one or more memories 913 for storing data. Alternatively, all or part of memory 913 may be located outside chip 910. Optionally, interface circuit 912 is connected to memory 913 and may be used to receive data from memory 913 or other devices, or may be used to send data to memory 913 or other devices. For example, interface circuit 912 may read data stored in memory 913 and send the data to processor 911.

[0638] In some embodiments, the interface circuit 912 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, at least one of steps S201-1 and S201-2 shown in FIG. 2a , steps S210, S211, S212, S214, and S215 shown in FIG. 2b , and steps S220, S221, and S222 shown in FIG. 2c , but not limited thereto). The interface circuit 912 performing the communication steps such as sending and / or receiving in the above method, for example, means that the interface circuit 912 performs data exchange between the processor 911, the chip 910, the memory 913, or the transceiver device. In some embodiments, the processor 911 performs at least one of the other steps (for example, at least one of step S203 shown in FIG. 2a , step S213 shown in FIG. 2b , and step S223 shown in FIG. 2c , but not limited thereto).

[0639] The present disclosure also provides a program product, which, when executed by the communication device 900, enables the communication device 900 to perform any of the above methods. Optionally, the program product is a computer program product.

[0640] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0641] The technical solutions described in the embodiments of the present disclosure can be arbitrarily combined without conflict.

[0642] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0643] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A communication system, characterized in that, Including: A first terminal and a first network element, where the first network element is configured to associate first information and second information of the first terminal; wherein, the first information is used to identify the first terminal on the control plane, and the second information is used to identify the first terminal on the user plane.

2. The communication system according to claim 1, characterized in that, It further includes: A second network element, where the first network element is further configured to receive a first message sent by the first terminal via the second network element, and the first message includes the second information.

3. The communication information according to claim 2, wherein The first message is used to notify that the establishment of a first user plane connection between the first terminal and the first network element is completed, and the first message includes the second information.

4. The communication information according to claim 2, wherein The first message is used for the first user plane connection establishment confirmation between the first terminal and the first network element, and the first message includes the second information.

5. The communication system according to any one of claims 1-4, characterized in that, The second information is obtained by the first terminal.

6. The communication system according to claim 1, wherein It further includes: A second network element, where the first network element is further configured to send a second message to the second network element, and the second message is used to request the second information; the first network element is further configured to receive a third message sent by the second network element, and the third message includes the second information.

7. The communication information according to claim 6, wherein The second message includes at least one of the following information: The first information; Information of a PDU session; First indication information for indicating a request for the second information.

8. The communication system according to claim 6 or 7, characterized in that, The second information is included in the context of the first terminal stored in the second network element.

9. The communication system according to claim 6 or 7, characterized in that, It further includes: A third network element, where the second network element is further configured to determine information of an SM context and information of a PDU session according to the first information, and send a fourth message to the third network element, and the fourth message is used to request the second information; the second network element is further configured to receive a fifth message sent by the third network element, and the fifth message includes the second information.

10. The communication system according to claim 9, wherein The fourth message includes at least one of the following information: The information of the SM context; The information of the PDU session; Second indication information for indicating a request for the second information.

11. The communication system according to claim 9, wherein the second network element is further configured to store the second information in the context of the first terminal.

12. The communication system according to any one of claims 2-11, wherein the first network element is further configured to store the second information in the context of the first terminal.

13. The communication system according to claim 1, characterized in that, It further includes: A fourth network element, where the first network element is further configured to send a sixth message to the fourth network element, and the sixth message is used to request the first information; the first network element is further configured to receive a seventh message sent by the fourth network element, and the seventh message includes the first information.

14. The communication system according to claim 13, characterized in that, The sixth message includes the following information: The second information; Information of the first network element.

15. The communication system according to claim 13 or 14, characterized in that, It further includes: A fifth network element, where the first information is obtained by the fourth network element from the fifth network element.

16. The communication system according to any one of claims 13-15, wherein the first network element is further configured to store the first information in the context of the first terminal.

17. A communication method, characterized in that, Applied to a first network element, the method includes: Associate the first information and the second information of the first terminal; Among them, the first information is used to identify the first terminal on the control plane, and the second information is used to identify the first terminal on the user plane.

18. The method according to claim 17, wherein It further includes: The second network element receives a first message sent by the first terminal, and the first message includes the second information.

19. The method according to claim 18, wherein The first message is used to notify that the establishment of the first user plane connection between the first terminal and the first network element is completed, and the first message includes the second information.

20. The method according to claim 18, wherein The first message is used for the first user plane connection confirmation between the first terminal and the first network element, and the first message includes the second information.

21. The method according to any one of claims 18 - 20, characterized in that, The second information is information corresponding to the PDU session obtained by the first terminal.

22. The method according to claim 17, wherein It further includes: Send a second message to the second network element, and the second message is used to request the second information; Receive a third message sent by the second network element, and the third message includes the second information.

23. The method according to claim 22, wherein The second message includes at least one of the following information: The first information; Information of the PDU session; The first indication information, which is used to indicate the request for the second information.

24. The method according to claim 22 or 23, characterized in that, The second information is included in the context of the first terminal stored in the second network element.

25. The method according to claim 22 or 23, characterized in that, The second information is obtained by the second network element from a third network element.

26. The method according to any one of claims 18-25, characterized in that, It further includes: Store the second information in the context of the first terminal.

27. The method according to claim 17, characterized in that, It further includes: Send a sixth message to the fourth network element, and the second message is used to request the first information; Receive a seventh message sent by the fourth network element, and the seventh message includes the first information.

28. The method according to claim 27, wherein The sixth message includes the following information: The second information; Information of the first network element.

29. The method according to claim 27 or 28, characterized in that, The first information is obtained by the fourth network element from a fifth network element.

30. The method according to any one of claims 27-29, characterized in that, It further includes: Store the first information in the context of the first terminal.

31. A communication method, characterized in that, Applied to the second network element, the method includes: Transmit a first message from the first terminal to the first network element, and the first message includes the second information, and the second information is used to identify the first terminal on the user plane.

32. The method according to claim 31, wherein The first message is used to notify that the establishment of the first user plane connection between the first terminal and the first network element is completed, and the first message includes the second information.

33. The method according to claim 31, wherein The first message is used for the first user plane connection confirmation between the first terminal and the first network element, and the first message includes the second information.

34. The method according to any one of claims 30-33, characterized in that, The second information is information corresponding to the PDU session obtained by the first terminal.

35. The method according to any one of claims 30 - 34, characterized in that, It further includes: Store the second information in the context of the first terminal.

36. A communication method, characterized in that, Applied to the second network element, the method includes: Receive a second message sent by the first network element, and the second message is used to request the second information of the first terminal; Send a third message to the first network element, and the third message includes the second information; Among them, the second information is used to identify the first terminal on the user plane.

37. The method according to claim 36, wherein The second message includes at least one of the following information: The first information of the first terminal, which is used to identify the first terminal on the control plane; Information of the PDU session; The first indication information, which is used to indicate the request for the second information.

38. The method according to claim 36 or 37, characterized in that, The second information is included in the context of the first terminal stored in the second network element.

39. The method according to claim 37, characterized in that, Before sending a third message to the first network element, it further includes: Determining information on the SM context and information on the PDU session according to the first information, and sending a fourth message to a third network element, where the fourth message is used to request the second information; Receiving a fifth message sent by the third network element, where the fifth message includes the second information.

40. The method according to claim 39, wherein The fourth message includes at least one of the following information: Information on the SM context; Information on the PDU session; Second indication information for indicating a request for the second information.

41. The method according to any one of claims 36 - 40, characterized in that, It further includes: Storing the second information in the context of the first terminal.

42. A communication method, characterized in that, Applied to a third network element, the method includes: Receiving a fourth message sent by a second network element, where the fourth message is used to request second information of a first terminal; Sending a fifth message to the second network element, where the fifth message includes the second information; Wherein, the second information is used to identify the first terminal in the user plane.

43. A communication method, characterized in that, Applied to a fourth network element, the method includes: Receiving a sixth message sent by a first network element, where the sixth message is used to request first information of a first terminal; Sending a seventh message to the first network element, where the seventh message includes the first information; Wherein, the first information is used to identify the first terminal in the control plane.

44. The method according to claim 44, characterized in that, The sixth message includes the following information: Second information of the first terminal for identifying the first terminal in the user plane; Information on the first network element.

45. The method according to claim 44 or 45, characterized in that The first information is obtained by the fourth network element from a fifth network element.

46. A communication method, characterized in that, Applied to a first terminal, the method includes: Sending a first message to a first network element via a second network element, where the first message includes second information for identifying the first terminal in the user plane.

47. The method according to claim 46, wherein The first message is used to notify that the establishment of a first user plane connection between the first terminal and the first network element is completed, and the first message includes the second information.

48. The method according to claim 46, wherein The first message is used for the first user plane connection confirmation between the first terminal and the first network element, and the first message includes the second information.

49. The method according to any one of claims 46 - 48, characterized in that, It further includes: Obtaining the second information corresponding to a protocol data unit (PDU) session.

50. A first network element, characterized in that, It includes: A first processing module for associating first information and second information of a first terminal; Wherein, the first information is used to identify the first terminal in the control plane, and the second information is used to identify the first terminal in the user plane.

51. A second network element, characterized in that, It includes: A second transceiver module for transmitting a first message from a first terminal to a first network element, where the first message includes second information for identifying the first terminal in the user plane; Or, The second transceiver module is used to receive a second message sent by the first network element, where the second message is used to request second information of the first terminal, and is further used to send a third message to the first network element, where the third message includes the second information; wherein, the second information is used to identify the first terminal in the user plane.

52. A third network element, characterized in that, It includes: A third transceiver module, configured to receive a fourth message sent by a second network element, where the fourth message is used to request second information of a first terminal, and is further configured to send a fifth message to the second network element, where the fifth message includes the second information; wherein, the second information is used to identify the first terminal in the user plane.

53. A fourth network element, characterized in that, Comprising: A fourth transceiver module, configured to receive a sixth message sent by a first network element, where the sixth message is used to request first information of a first terminal, and is further configured to send a seventh message to the first network element, where the seventh message includes the first information; wherein, the first information is used to identify the first terminal in the control plane.

54. A first terminal, characterized in that, Comprising: A fifth transceiver module, configured to send a first message to a first network element via a second network element, where the first message includes second information, and the second information is used to identify the first terminal in the user plane.

55. A first network element, characterized in that, Comprising: One or more processors; Wherein, the first network element is configured to execute the communication method according to any one of claims 17 to 30.

56. A second network element, characterized in that, Comprising: One or more processors; Wherein, the second network element is configured to execute the communication method according to any one of claims 31 to 35, or claims 36 to 41.

57. A third network element, characterized in that, Comprising: One or more processors; Wherein, the third network element is configured to execute the communication method according to claim 42.

58. A fourth network element, characterized in that Comprising: One or more processors; Wherein, the fourth network element is configured to execute the communication method according to any one of claims 43 to 45.

59. A first terminal, characterized in that, Comprising: One or more processors; Wherein, the first terminal is configured to execute the communication method according to any one of claims 46 to 49.

60. A computer-readable storage medium having a computer program stored thereon, characterized in that, The computer-readable storage medium stores executable instructions, and the executable instructions are loaded and executed by the processor to implement the communication method according to any one of claims 17 to 30, or claims 31 to 35, or claims 36 to 41, or claim 42, or claims 43 to 45, or claims 46 to 49.

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