Information transmission method, service request method, apparatus and device

Abstract

The present disclosure provides an information transmission method, a service request method, an apparatus and a device, the information transmission method comprising: a first network function sends a first request to a second network function, wherein the first request is used for requesting at least one of the following: authenticating a terminal or a first terminal identifier of the terminal; acquiring address information of a third network function and / or a fourth network function; subscription information of the terminal; and context information of the terminal.

Description

Information transmission method, service request method, device and equipment

[0001] Cross-reference to Related Applications

[0002] The present disclosure claims priority from Chinese Patent Application No. 202410641622.6 filed on May 22, 2024 in China, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the field of communication technology, and in particular to an information transmission method, a service request method, a device and equipment. BACKGROUND

[0004] In related technologies, a 6th Generation Mobile Communication Technology (6G) network distributed deployment architecture has a design concept of distribution, autonomy and self-containment. In the architecture, based on the localization requirement of data, network nodes are distributed (in the order of thousands or ten thousands), the architecture is a Distributed Autonomous Network (DAN) architecture, and the DAN network architecture is composed of a Small Cloud Unit (SCU) and related protocols. The SCU is the most critical module unit of the DAN architecture, can support distributed deployment in the network, and has self-containment and autonomy capabilities.

[0005] However, under the DAN architecture, based on the localization requirement of data, the distributed SCU only stores local data, which can cause the following problems and thus cause terminal access failure:

[0006] 1. When a terminal that has not subscribed to the distributed SCU accesses the network, authentication cannot be performed, and subscription cannot be obtained.

[0007] 2. For a session that needs to insert a centralized User Plane Function (UPF), the distributed SCU cannot select to insert the centralized UPF.

[0008] Therefore, there is a problem of terminal access failure under the distributed autonomous architecture in the prior art. SUMMARY

[0009] The purpose of the present disclosure is to provide an information transmission method, a service request method, a device and equipment to support solving the problem of terminal access failure under the distributed autonomous architecture in the prior art.

[0010] To solve the above technical problems, an information transmission method is provided, comprising:

[0011] The first network function sends a first request to a second network function;

[0012] The first request is used to request at least one of the following:

[0013] authentication of the terminal or a first terminal identifier of the terminal;

[0014] address information of a third network function and / or a fourth network function;

[0015] subscription information of the terminal;

[0016] context information of the terminal.

[0017] Optionally, the first request comprises the first terminal identifier of the terminal.

[0018] Optionally, the method further comprises:

[0019] The first network function receives first information sent by the second network function, and the first information comprises at least one of the following:

[0020] a second terminal identifier, the second terminal identifier being related to the first terminal identifier;

[0021] address information of the third network function;

[0022] address information of the fourth network function;

[0023] subscription information of the terminal;

[0024] context information of the terminal.

[0025] Optionally, the first network function sends a first request to a second network function, comprising:

[0026] The first network function sends the first request to the second network function according to the fact that the first network function cannot select a fifth network function and / or a sixth network function; or,

[0027] The first network function sends the first request to the second network function when the first network function cannot select the fifth network function and / or the sixth network function.

[0028] Optionally, the method further comprises:

[0029] The first network function sends a second request to the second network function, the second request carrying the second terminal identifier, and the second request being used to request context information of the terminal and / or subscription information of the terminal;

[0030] The first network function receives the context of the terminal and / or the subscription information of the terminal sent by the second network function.

[0031] Optionally, the first network function sends a second request to the second network function, comprising:

[0032] The first network function sends the second request to the second network function according to the failure to select the sixth network function; or,

[0033] The first network function sends the second request to the second network function when the first network function fails to select the sixth network function.

[0034] Optionally, the method further comprises:

[0035] The first network function requests the third network function and / or the fourth network function to perform authentication; and / or,

[0036] The first network function performs authentication with the third network function and / or the fourth network function.

[0037] Optionally, further comprising:

[0038] The first network function receives the context of the terminal and / or the subscription information of the terminal sent by the fourth network function.

[0039] Optionally,

[0040] The first network function is an access and mobility management function (AMF); and / or,

[0041] The second network function is an AMF; and / or,

[0042] The third network function is an authentication server function (AUSF); and / or,

[0043] The fourth network function is a unified data management (UDM); and / or,

[0044] The fifth network function is an AUSF; and / or,

[0045] The sixth network function is a UDM; and / or,

[0046] The first terminal identifier is a concealed terminal identifier; and / or,

[0047] The second terminal identifier is a permanent terminal identifier.

[0048] Optionally,

[0049] The first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit; and / or,

[0050] One or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function.

[0051] The embodiments of the present disclosure further provide an information transmission method, comprising:

[0052] The second network function receives the first request sent by the first network function;

[0053] The first request is used to request at least one of the following:

[0054] authentication of the terminal or a first terminal identifier of the terminal;

[0055] obtaining address information of the third network function and / or the fourth network function;

[0056] subscription information of the terminal;

[0057] context information of the terminal.

[0058] Optionally, the first request comprises the first terminal identifier of the terminal.

[0059] Optionally, the method further comprises:

[0060] The second network function sends first information to the first network function; the first information comprises at least one of the following:

[0061] a second terminal identifier, the second terminal identifier being related to the first terminal identifier;

[0062] address information of the third network function;

[0063] address information of the fourth network function;

[0064] subscription information of the terminal;

[0065] context information of the terminal.

[0066] Optionally, the method further comprises:

[0067] The second network function receives a second request sent by the first network function, the second request carrying the second terminal identifier, and the second request being used to request to obtain context information of the terminal and / or subscription information of the terminal;

[0068] The second network function sends the context of the terminal and / or the subscription information of the terminal to the first network function.

[0069] Optionally,

[0070] The first network function is an access and mobility management function (AMF); and / or,

[0071] The second network function is an AMF; and / or,

[0072] The third network function is an authentication server function (AUSF); and / or,

[0073] The fourth network function is a unified data management (UDM); and / or,

[0074] The first terminal identifier is a concealed terminal identifier; and / or,

[0075] The second terminal identifier is a permanent terminal identifier.

[0076] Optionally,

[0077] The first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit; and / or,

[0078] One or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function.

[0079] The embodiments of the present disclosure also provide an information transmission method, the method comprising:

[0080] The seventh network function sends a third request to an eighth network function, the third request comprising a data network name (DNN).

[0081] Optionally, the seventh network function sending the third request to the eighth network function comprises:

[0082] The seventh network function sends the third request to the eighth network function in a case where the first network or the first network function set does not support the DNN, or in a case where the seventh network function does not support the DNN; and / or,

[0083] The seventh network function sends the third request to the eighth network function according to that the first network or the first network function set does not support the DNN, and / or that the seventh network function does not support the DNN; and / or,

[0084] When the first network or the first set of network functions does not support the DNN, and / or when the seventh network function does not support the DNN, the seventh network function sends the third request to the eighth network function.

[0085] Optionally,

[0086] The seventh network function is a session management function (SMF); and / or,

[0087] The eighth network function is an SMF; and / or,

[0088] The first network is a local micro cloud unit (SCU) and / or a distributed SCU; and / or,

[0089] The first set of network functions is a local SCU and / or a distributed SCU.

[0090] Optionally,

[0091] The seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit; and / or,

[0092] The eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit.

[0093] The embodiments of the present disclosure further provide an information transmission method, which comprises:

[0094] The eighth network function receives the third request sent by the seventh network function, and the third request comprises a DNN.

[0095] Optionally,

[0096] The seventh network function is a session management function (SMF); and / or,

[0097] The eighth network function is an SMF.

[0098] Optionally,

[0099] The seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit; and / or,

[0100] The eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit.

[0101] The embodiments of the present disclosure further provide an information transmission method, which comprises at least one of:

[0102] The seventh network function obtains first subscription information from the ninth network function through a first session, wherein the first session is a session through which the eighth network function obtains second subscription information from the fourth network function;

[0103] The seventh network function obtains first session policy information from the tenth network function through the first session, wherein the first session is a session through which the eighth network function obtains second session policy information from the eleventh network function.

[0104] Optionally, the first session policy information is generated by the tenth network function, and the second session policy information is generated by the eleventh network function.

[0105] Optionally,

[0106] The fourth network function is a unified data management (UDM); and / or,

[0107] The seventh network function is a session management function (SMF); and / or,

[0108] The eighth network function is the SMF; and / or,

[0109] The ninth network function is the UDM; and / or,

[0110] The tenth network function is a policy control function (PCF); and / or,

[0111] The eleventh network function is the PCF.

[0112] Optionally,

[0113] One or more of the following is a distributed network function, or at least one of the following is a network function of a distributed network, or at least one of the following is a network function of a distributed micro cloud unit: the seventh network function, the ninth network function, and the tenth network function; and / or,

[0114] One or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the fourth network function, the eighth network function, and the eleventh network function.

[0115] The embodiments of the present disclosure further provide a service request method, applied to a twelfth network function of a second network, and the method comprises the following steps:

[0116] Receiving a fourth request message from a thirteenth network function of a third network;

[0117] Sending second information to the thirteenth network function, wherein the second information carries at least one of the following:

[0118] indication information of a non-direct communication mode supporting proxy discovery;

[0119] indication information of a non-direct communication mode not supporting proxy discovery;

[0120] indication information of selecting a network function (NF) in a target domain;

[0121] identification information of a candidate network function instance;

[0122] information of a service communication proxy (SCP) in a target domain.

[0123] optionally,

[0124] the fourth request message is forwarded by the thirteenth network function according to a fifth request message of a network function service consumer, and the fifth request message is used by the network function service consumer to request discovery of a target network function in the target domain;

[0125] the fifth request message carries at least one of the following:

[0126] a network function load requirement;

[0127] a network function selection mechanism;

[0128] identification information of the second network;

[0129] identification information of the third network;

[0130] an NF type of the network function service consumer.

[0131] optionally,

[0132] when the second information includes indication information of a non-direct communication mode not supporting proxy discovery, indication information of selecting a network function (NF) in a target domain, and identification information of a candidate network function instance, the thirteenth network function forwards the second information to the network function service consumer;

[0133] the network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function.

[0134] optionally,

[0135] the fourteenth network function belongs to the third network, and the fourteenth network function is a service communication proxy (SCP);

[0136] the fifteenth network function belongs to the second network, and the fifteenth network function is a service communication proxy (SCP);

[0137] The network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function, including: the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message;

[0138] The sixth request message carries at least one of the following:

[0139] Network function load requirement;

[0140] Network function selection mechanism;

[0141] Identification information of the second network;

[0142] Identification information of the third network.

[0143] Optionally,

[0144] When the second information contains the indication information of the non-direct communication mode supporting non-proxy discovery and the indication information of selecting the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer;

[0145] The network function service consumer discovers and selects the target network function through a sixteenth network function.

[0146] Optionally,

[0147] The sixteenth network function belongs to the second network, and the sixteenth network function is a network repository function (NRF);

[0148] The network function service consumer discovers and selects the target network function through a sixteenth network function, including: the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and forwards the sixth request message to the sixteenth network function;

[0149] The sixteenth network function discovers and selects the target network function according to the sixth request message, and sends a second feedback message to the fifteenth network function;

[0150] The fifteenth network function communicates with the target network function according to the second feedback message;

[0151] wherein the sixth request message carries at least one of:

[0152] network function load requirement;

[0153] network function selection mechanism;

[0154] identification information of the second network;

[0155] identification information of the third network.

[0156] optionally,

[0157] when the second information contains the indication information of the non-direct communication mode supporting proxy discovery and the indication information of selecting the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer;

[0158] the network function service consumer discovers and selects the target network function through a fifteenth network function.

[0159] optionally, the network function service consumer discovers and selects the target network function through a fifteenth network function, comprising:

[0160] the network function service consumer sends a sixth request message to a fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message;

[0161] the fifteenth network function communicates with the target network function;

[0162] wherein the sixth request message carries at least one of:

[0163] network function load requirement;

[0164] network function selection mechanism;

[0165] identification information of the second network;

[0166] identification information of the third network.

[0167] optionally,

[0168] the second network is a remote public land mobile network; and / or,

[0169] the third network is a local public land mobile network; and / or,

[0170] The twelfth network function is a network repository function, NRF; and / or

[0171] The thirteenth network function is a network repository function, NRF.

[0172] The present disclosure further provides an information transmission apparatus, comprising:

[0173] A first sending module, configured to send, by a first network function, a first request to a second network function;

[0174] The first request is used to request at least one of the following:

[0175] authentication of a terminal or a first terminal identifier of the terminal;

[0176] address information of a third network function and / or a fourth network function;

[0177] subscription information of the terminal;

[0178] context information of the terminal.

[0179] Optionally, the first request comprises the first terminal identifier of the terminal.

[0180] Optionally, the apparatus further comprises:

[0181] A first receiving module, configured to receive, by the first network function, first information sent by the second network function; the first information comprises at least one of the following:

[0182] a second terminal identifier, the second terminal identifier being related to the first terminal identifier;

[0183] address information of the third network function;

[0184] address information of the fourth network function;

[0185] subscription information of the terminal;

[0186] context information of the terminal.

[0187] Optionally, the first network function sending the first request to the second network function comprises:

[0188] The first network function sends the first request to the second network function according to the fact that the fifth network function and / or the sixth network function cannot be selected; or

[0189] When the first network function cannot select the fifth network function and / or the sixth network function, the first network function sends the first request to the second network function.

[0190] Optionally, the apparatus further comprises:

[0191] a second sending module, configured to send, by the first network function, a second request to the second network function, the second request carrying the second terminal identifier, the second request being used to request to obtain the context of the terminal and / or the subscription information of the terminal;

[0192] a second receiving module, configured to receive, by the first network function, the context of the terminal and / or the subscription information of the terminal sent by the second network function.

[0193] Optionally, the first network function sending the second request to the second network function comprises:

[0194] the first network function sends the second request to the second network function according to the failure to select the sixth network function; or,

[0195] the first network function sends the second request to the second network function when the first network function fails to select the sixth network function.

[0196] Optionally, the apparatus further comprises:

[0197] a first processing module, configured to request, by the first network function, the third network function and / or the fourth network function to perform authentication; and / or,

[0198] the first network function performs authentication with the third network function and / or the fourth network function.

[0199] Optionally, the apparatus further comprises:

[0200] a third receiving module, configured to receive, by the first network function, the context of the terminal and / or the subscription information of the terminal sent by the fourth network function.

[0201] Optionally,

[0202] the first network function is an access and mobility management function (AMF); and / or,

[0203] the second network function is an AMF; and / or,

[0204] the third network function is an authentication server function (AUSF); and / or,

[0205] the fourth network function is a unified data management (UDM); and / or,

[0206] a fifth network function is an AUSF; and / or,

[0207] a sixth network function is a UDM; and / or,

[0208] The first terminal identifier is a hidden terminal identifier; and / or,

[0209] The second terminal identifier is a permanent terminal identifier.

[0210] Optionally,

[0211] The first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit; and / or,

[0212] The following one or more is a centralized network function, or the following at least one is a network function of a centralized network, or the following at least one is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function.

[0213] The embodiments of the present disclosure further provide an information transmission device, comprising:

[0214] The fourth receiving module is configured to receive, by the second network function, the first request sent by the first network function.

[0215] The first request is used to request at least one of the following:

[0216] authentication of the terminal or the first terminal identifier of the terminal;

[0217] obtaining address information of the third network function and / or the fourth network function;

[0218] subscription information of the terminal;

[0219] context information of the terminal.

[0220] Optionally, the first request comprises the first terminal identifier of the terminal.

[0221] Optionally, the device further comprises:

[0222] The third sending module is configured to send, by the second network function, first information to the first network function; the first information comprises at least one of the following:

[0223] The second terminal identifier is related to the first terminal identifier;

[0224] The address information of the third network function;

[0225] The address information of the fourth network function;

[0226] The subscription information of the terminal;

[0227] The context information of the terminal.

[0228] Optionally, the device further comprises:

[0229] a fifth receiving module, configured to receive, by the second network function, a second request sent by the first network function, the second request carrying the second terminal identifier, the second request being used to request to obtain the context of the terminal and / or the subscription information of the terminal;

[0230] a fourth sending module, configured to send, by the second network function, the context of the terminal and / or the subscription information of the terminal to the first network function.

[0231] Optionally,

[0232] the first network function is an access and mobility management function (AMF); and / or,

[0233] the second network function is an AMF; and / or,

[0234] the third network function is an authentication server function (AUSF); and / or,

[0235] the fourth network function is a unified data management (UDM); and / or,

[0236] the first terminal identifier is a concealed terminal identifier; and / or,

[0237] the second terminal identifier is a permanent terminal identifier.

[0238] Optionally,

[0239] the first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit; and / or,

[0240] one or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function.

[0241] Embodiments of the present disclosure further provide an information transmission apparatus, the apparatus comprising:

[0242] a fifth sending module, configured to send, by the seventh network function, a third request to the eighth network function, the third request comprising a data network name (DNN).

[0243] Optionally, the seventh network function sending the third request to the eighth network function comprises:

[0244] The seventh network function sends a third request to the eighth network function when the first network or the first set of network functions does not support the DNN, or when the seventh network function does not support the DNN; and / or,

[0245] The seventh network function sends the third request to the eighth network function according to that the first network or the first set of network functions does not support the DNN, and / or, the seventh network function does not support the DNN; and / or,

[0246] The seventh network function sends the third request to the eighth network function when the first network or the first set of network functions does not support the DNN, and / or, when the seventh network function does not support the DNN.

[0247] Optionally,

[0248] The seventh network function is a session management function (SMF); and / or,

[0249] The eighth network function is an SMF; and / or,

[0250] The first network is a local micro cloud unit (SCU) and / or a distributed SCU; and / or,

[0251] The first set of network functions is a local SCU and / or a distributed SCU.

[0252] Optionally,

[0253] The seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit; and / or,

[0254] The eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit.

[0255] The embodiments of the present disclosure further provide an information transmission apparatus, comprising:

[0256] A sixth receiving module is configured to receive, by the eighth network function, the third request sent by the seventh network function, wherein the third request comprises a DNN.

[0257] Optionally,

[0258] The seventh network function is a session management function (SMF); and / or,

[0259] The eighth network function is an SMF.

[0260] Optionally,

[0261] The seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit; and / or,

[0262] The eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit.

[0263] The embodiments of the present disclosure further provide an information transmission apparatus, which is used for at least one of the following:

[0264] The seventh network function obtains first subscription information from the ninth network function through a first session, wherein the first session is a session through which the eighth network function obtains second subscription information from the fourth network function;

[0265] The seventh network function obtains first session policy information from the tenth network function through the first session, wherein the first session is a session through which the eighth network function obtains second session policy information from the eleventh network function.

[0266] Optionally, the first session policy information is generated by the tenth network function, and the second session policy information is generated by the eleventh network function.

[0267] Optionally,

[0268] The fourth network function is a unified data management (UDM); and / or,

[0269] The seventh network function is a session management function (SMF); and / or,

[0270] The eighth network function is the SMF; and / or,

[0271] The ninth network function is the UDM; and / or,

[0272] The tenth network function is a policy control function (PCF); and / or,

[0273] The eleventh network function is the PCF.

[0274] Optionally,

[0275] The seventh network function, the ninth network function, and the tenth network function are one or more of the following: a distributed network function, or a network function of a distributed network, or a network function of a distributed micro cloud unit; and / or,

[0276] One or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the fourth network function, the eighth network function, and the eleventh network function.

[0277] The embodiments of the present disclosure also provide a service request device, applied to a twelfth network function of a second network, the device comprising:

[0278] A seventh receiving module configured to receive a fourth request message from a thirteenth network function of a third network;

[0279] A sixth sending module configured to send second information to the thirteenth network function, the second information carrying at least one of the following:

[0280] Indication information of a non-direct communication mode supporting proxy discovery;

[0281] Indication information of a non-direct communication mode not supporting proxy discovery;

[0282] Indication information of selecting a network function NF in a target domain;

[0283] Identification information of a candidate network function instance;

[0284] Information of a service communication proxy SCP in the target domain.

[0285] Optionally,

[0286] The fourth request message is forwarded by the thirteenth network function according to a fifth request message of a network function service consumer, and the fifth request message is requested by the network function service consumer to discover a target network function in the target domain;

[0287] The fifth request message carries at least one of the following:

[0288] Network function load requirements;

[0289] Network function selection mechanism;

[0290] Identification information of the second network;

[0291] Identification information of the third network;

[0292] NF type of the network function service consumer.

[0293] Optionally,

[0294] when the second information contains the indication information of the non-direct communication mode supporting non-proxy discovery, the indication information of selecting the NF in the target domain, and the identification information of the candidate network function instance, the thirteenth network function forwards the second information to the network function service consumer;

[0295] The network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function.

[0296] Optionally,

[0297] The fourteenth network function belongs to the third network, and the fourteenth network function is a service communication proxy SCP.

[0298] The fifteenth network function belongs to the second network, and the fifteenth network function is a service communication proxy SCP.

[0299] The network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function, including: the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; and the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message.

[0300] The sixth request message carries at least one of the following:

[0301] Network function load requirement;

[0302] Network function selection mechanism;

[0303] Identification information of the second network;

[0304] Identification information of the third network.

[0305] Optionally,

[0306] when the second information contains the indication information of the non-direct communication mode supporting non-proxy discovery, and the indication information of selecting the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer;

[0307] The network function service consumer discovers and selects the target network function through a sixteenth network function.

[0308] Optionally,

[0309] The sixteenth network function belongs to the second network, and the sixteenth network function is a network repository function (NRF);

[0310] The network function service consumer discovers and selects the target network function through the sixteenth network function, including that the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; and the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and forwards the sixth request message to the sixteenth network function;

[0311] The sixteenth network function discovers and selects the target network function according to the sixth request message, and sends a second feedback message to the fifteenth network function;

[0312] The fifteenth network function communicates with the target network function according to the second feedback message;

[0313] The sixth request message carries at least one of the following:

[0314] A network function load requirement;

[0315] A network function selection mechanism;

[0316] Identification information of the second network;

[0317] Identification information of the third network.

[0318] Optionally,

[0319] When the second information contains the indication information of the supported proxy discovery non-direct communication mode and the indication information of the selection of the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer;

[0320] The network function service consumer discovers and selects the target network function through the fifteenth network function.

[0321] Optionally, the network function service consumer discovers and selects the target network function through the fifteenth network function, including:

[0322] The network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; and the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message;

[0323] The fifteenth network function communicates with the target network function;

[0324] The sixth request message carries at least one of the following:

[0325] Network function load requirement;

[0326] Network function selection mechanism;

[0327] Identity information of the second network;

[0328] Identity information of the third network.

[0329] Optionally,

[0330] The second network is a remote public land mobile network; and / or,

[0331] The third network is a local public land mobile network; and / or,

[0332] The twelfth network function is a network repository function (NRF); and / or,

[0333] The thirteenth network function is a network repository function (NRF).

[0334] The embodiments of the present disclosure further provide an information transmission device, comprising: a transceiver;

[0335] The transceiver is configured to send a first request from a first network function to a second network function;

[0336] The first request is used to request at least one of the following:

[0337] Authentication of a terminal or a first terminal identifier of the terminal;

[0338] Obtain address information of a third network function and / or a fourth network function;

[0339] Subscription information of the terminal;

[0340] Context information of the terminal.

[0341] Optionally, the first request includes the first terminal identifier of the terminal.

[0342] Optionally, the transceiver is further configured to:

[0343] The first network function receives first information sent by the second network function; the first information includes at least one of the following:

[0344] Second terminal identifier, the second terminal identifier is related to the first terminal identifier;

[0345] Address information of the third network function;

[0346] address information of the fourth network function;

[0347] subscription information of the terminal;

[0348] context information of the terminal.

[0349] Optionally, the first network function sends a first request to a second network function, comprising:

[0350] the first network function sends the first request to the second network function according to that the fifth network function and / or the sixth network function cannot be selected; or,

[0351] the first network function sends the first request to the second network function when the fifth network function and / or the sixth network function cannot be selected.

[0352] Optionally, the transceiver is further configured to:

[0353] the first network function sends a second request to the second network function, the second request carrying the second terminal identifier, the second request being used to request to acquire context information of the terminal and / or subscription information of the terminal;

[0354] the first network function receives the context information of the terminal and / or the subscription information of the terminal sent by the second network function.

[0355] Optionally, the first network function sends a second request to the second network function, comprising:

[0356] the first network function sends the second request to the second network function according to that the sixth network function cannot be selected; or,

[0357] the first network function sends the second request to the second network function when the sixth network function cannot be selected.

[0358] Optionally, the transceiver is further configured to:

[0359] the first network function requests the third network function and / or the fourth network function to perform authentication; and / or,

[0360] the first network function performs authentication with the third network function and / or the fourth network function.

[0361] Optionally, the transceiver is further configured to:

[0362] the first network function receives the context information of the terminal and / or the subscription information of the terminal sent by the fourth network function.

[0363] Optionally,

[0364] The first network function is an access and mobility management function (AMF); and / or,

[0365] The second network function is an AMF; and / or,

[0366] The third network function is an authentication server function (AUSF); and / or,

[0367] The fourth network function is a unified data management (UDM); and / or,

[0368] The fifth network function is an AUSF; and / or,

[0369] The sixth network function is a UDM; and / or,

[0370] The first terminal identifier is a concealed terminal identifier; and / or,

[0371] The second terminal identifier is a permanent terminal identifier.

[0372] Optionally,

[0373] The first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit; and / or,

[0374] One or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function.

[0375] The present disclosure also provides an information transmission device, comprising: a transceiver;

[0376] The transceiver is configured to receive, by the second network function, a first request sent by the first network function;

[0377] The first request is used to request at least one of the following:

[0378] authentication of a terminal or a first terminal identifier of the terminal;

[0379] address information of a third network function and / or a fourth network function;

[0380] subscription information of the terminal;

[0381] context information of the terminal.

[0382] Optionally, the first request includes the first terminal identifier of the terminal.

[0383] Optionally, the transceiver is further configured to:

[0384] The second network function sends first information to the first network function, and the first information comprises at least one of:

[0385] A second terminal identifier, the second terminal identifier being related to the first terminal identifier;

[0386] Address information of the third network function;

[0387] Address information of the fourth network function;

[0388] Subscription information of the terminal;

[0389] Context information of the terminal.

[0390] Optionally, the transceiver is further configured to:

[0391] The second network function receives a second request sent by the first network function, the second request carrying the second terminal identifier, and the second request being used for requesting to obtain the context of the terminal and / or the subscription information of the terminal;

[0392] The second network function sends the context of the terminal and / or the subscription information of the terminal to the first network function.

[0393] Optionally,

[0394] The first network function is an access and mobility management function (AMF); and / or,

[0395] The second network function is an AMF; and / or,

[0396] The third network function is an authentication server function (AUSF); and / or,

[0397] The fourth network function is a unified data management (UDM); and / or,

[0398] The first terminal identifier is a concealed terminal identifier; and / or,

[0399] The second terminal identifier is a permanent terminal identifier.

[0400] Optionally,

[0401] The first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit; and / or,

[0402] One or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function.

[0403] The embodiments of the present disclosure further provide an information transmission device, the device comprising: a transceiver;

[0404] The transceiver is configured to send, by the seventh network function, a third request to an eighth network function, the third request comprising a data network name (DNN).

[0405] Optionally, the seventh network function sending, to the eighth network function, the third request comprises:

[0406] The seventh network function sends the third request to the eighth network function in a case where the first network or the first set of network functions does not support the DNN, or in a case where the seventh network function does not support the DNN; and / or,

[0407] The seventh network function sends the third request to the eighth network function according to that the first network or the first set of network functions does not support the DNN, and / or that the seventh network function does not support the DNN; and / or,

[0408] The seventh network function sends the third request to the eighth network function when the first network or the first set of network functions does not support the DNN, and / or when the seventh network function does not support the DNN.

[0409] Optionally,

[0410] The seventh network function is a session management function (SMF); and / or,

[0411] The eighth network function is an SMF; and / or,

[0412] The first network is a local micro cloud unit (SCU) and / or a distributed SCU; and / or,

[0413] The first set of network functions is a local SCU and / or a distributed SCU.

[0414] Optionally,

[0415] The seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit; and / or,

[0416] The eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit.

[0417] The embodiments of the present disclosure further provide an information transmission device, comprising a transceiver.

[0418] The transceiver is configured to receive, by an eighth network function, a third request sent by a seventh network function, wherein the third request comprises a DNN.

[0419] Optionally,

[0420] The seventh network function is a session management function (SMF); and / or,

[0421] The eighth network function is the SMF.

[0422] Optionally,

[0423] The seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit; and / or,

[0424] The eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit.

[0425] The embodiments of the present disclosure further provide an information transmission device, comprising a transceiver; and the transceiver is configured to perform at least one of the following:

[0426] The seventh network function obtains first subscription information from a ninth network function through a first session, wherein the first session is a session through which an eighth network function obtains second subscription information from a fourth network function;

[0427] The seventh network function obtains first session policy information from a tenth network function through the first session, wherein the first session is a session through which an eighth network function obtains second session policy information from an eleventh network function.

[0428] Optionally, the first session policy information is generated by the tenth network function, and the second session policy information is generated by the eleventh network function.

[0429] Optionally,

[0430] The fourth network function is a unified data management (UDM); and / or,

[0431] The seventh network function is a session management function (SMF); and / or,

[0432] The eighth network function is the SMF; and / or,

[0433] The ninth network function is the UDM; and / or,

[0434] the tenth network function is a policy control function, PCF; and / or,

[0435] the eleventh network function is a PCF.

[0436] Optionally,

[0437] one or more of the following is a distributed network function, or at least one of the following is a network function of a distributed network, or at least one of the following is a network function of a distributed micro cloud unit: the seventh network function, the ninth network function, the tenth network function; and / or,

[0438] one or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the fourth network function, the eighth network function, the eleventh network function.

[0439] The embodiments of the present disclosure also provide a service request device, applied to a twelfth network function of a second network, the device comprising: a transceiver;

[0440] the transceiver is configured to receive a fourth request message from a thirteenth network function of a third network;

[0441] the transceiver is configured to send second information to the thirteenth network function, the second information carrying at least one of the following:

[0442] indication information of a non-direct communication mode supporting proxy discovery;

[0443] indication information of a non-direct communication mode not supporting proxy discovery;

[0444] indication information of selecting a network function, NF, in a target domain;

[0445] identification information of a candidate network function instance;

[0446] information of a service communication proxy, SCP, in the target domain.

[0447] Optionally,

[0448] the fourth request message is forwarded by the thirteenth network function according to a fifth request message of a network function service consumer, and the fifth request message is a request of the network function service consumer to discover a target network function in the target domain;

[0449] the fifth request message carries at least one of the following:

[0450] network function load requirement;

[0451] network function selection mechanism;

[0452] identity information of the second network;

[0453] identity information of the third network;

[0454] the NF type of the network function service consumer.

[0455] Optionally,

[0456] when the second information contains the indication information of the non-direct communication mode supporting non-proxy discovery, the indication information of selecting the NF in the target domain, and the identity information of the candidate network function instance, the thirteenth network function forwards the second information to the network function service consumer;

[0457] the network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function.

[0458] Optionally,

[0459] the fourteenth network function belongs to the third network, and the fourteenth network function is a service communication proxy SCP;

[0460] the fifteenth network function belongs to the second network, and the fifteenth network function is a service communication proxy SCP;

[0461] the network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function, including: the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message;

[0462] wherein the sixth request message carries at least one of:

[0463] network function load requirement;

[0464] network function selection mechanism;

[0465] identity information of the second network;

[0466] identity information of the third network.

[0467] Optionally,

[0468] when the second information contains the indication information of the non-direct communication mode supporting non-proxy discovery and the indication information of selecting the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer;

[0469] The network function service consumer discovers and selects the target network function through a sixteenth network function.

[0470] Optionally,

[0471] The sixteenth network function belongs to the second network, and the sixteenth network function is a network repository function (NRF);

[0472] The network function service consumer discovers and selects the target network function through a sixteenth network function, including: the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; a fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and forwards the sixth request message to the sixteenth network function;

[0473] The sixteenth network function discovers and selects the target network function according to the sixth request message, and sends a second feedback message to the fifteenth network function;

[0474] The fifteenth network function communicates with the target network function according to the second feedback message;

[0475] The sixth request message carries at least one of the following:

[0476] Network function load requirement;

[0477] Network function selection mechanism;

[0478] Identification information of the second network;

[0479] Identification information of the third network.

[0480] Optionally,

[0481] When the second information contains the indication information of the supported proxy discovery non-direct communication mode and the indication information of the selection of the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer;

[0482] The network function service consumer discovers and selects the target network function through a fifteenth network function.

[0483] Optionally, the network function service consumer discovers and selects the target network function through a fifteenth network function, including:

[0484] The network function service consumer sends a sixth request message to a fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message;

[0485] The fifteenth network function communicates with the target network function;

[0486] The sixth request message carries at least one of the following:

[0487] Network function load requirements;

[0488] Network function selection mechanism;

[0489] Identification information of the second network;

[0490] Identification information of the third network.

[0491] Optionally,

[0492] The second network is a remote public land mobile network; and / or,

[0493] The third network is a local public land mobile network; and / or,

[0494] The twelfth network function is a network repository function (NRF); and / or,

[0495] The thirteenth network function is a network repository function (NRF).

[0496] The embodiments of the present disclosure further provide a communication device, including a memory, a processor, and a program stored in the memory and executable on the processor; the processor implements the information transmission method described above when executing the program; or the processor implements the service request method described above when executing the program.

[0497] The embodiments of the present disclosure further provide a readable storage medium having a program stored thereon, the program being executable by a processor to implement the steps in the information transmission method described above; or the program being executable by a processor to implement the steps in the service request method described above.

[0498] The embodiments of the present disclosure further provide a computer program product including computer instructions, the computer instructions being executable by a processor to implement the steps in the information transmission method described above; or the computer instructions being executable by a processor to implement the steps in the service request method described above.

[0499] The above technical solutions of the present disclosure have the following beneficial effects:

[0500] In the above solution, the information transmission method sends a first request to a second network function through a first network function; wherein the first request is used to request at least one of the following: authentication of a terminal or a first terminal identifier of the terminal; address information of a third network function and / or a fourth network function; subscription information of the terminal; context information of the terminal; and support for requesting centralized SCU authentication or subscription through distributed SCU, thereby solving the problem of incomplete distributed SCU authentication or subscription information, and supporting avoidance of terminal access failure in a distributed autonomous architecture. BRIEF DESCRIPTION OF DRAWINGS

[0501] FIG. 1 is a schematic diagram of a distributed autonomous network architecture according to an embodiment of the present disclosure;

[0502] FIG. 2 is a schematic diagram of an information transmission method according to an embodiment of the present disclosure;

[0503] FIG. 3 is a schematic diagram of an information transmission method according to an embodiment of the present disclosure;

[0504] FIG. 4 is a schematic diagram of an information transmission method according to an embodiment of the present disclosure;

[0505] FIG. 5 is a schematic diagram of an information transmission method according to an embodiment of the present disclosure;

[0506] FIG. 6 is a schematic diagram of an information transmission method according to an embodiment of the present disclosure;

[0507] FIG. 7 is a schematic diagram of a service request method according to an embodiment of the present disclosure;

[0508] FIG. 8 is a schematic diagram of a specific implementation of an information transmission method according to an embodiment of the present disclosure;

[0509] FIG. 9 is a schematic diagram of a specific implementation of an information transmission method according to an embodiment of the present disclosure;

[0510] FIG. 10 is a schematic diagram of a specific implementation of an information transmission method according to an embodiment of the present disclosure;

[0511] FIG. 11 is a schematic diagram of a specific implementation of an information transmission method according to an embodiment of the present disclosure;

[0512] FIG. 12 is a schematic diagram of an information transmission device according to an embodiment of the present disclosure;

[0513] FIG. 13 is a schematic diagram of an information transmission device according to an embodiment of the present disclosure;

[0514] FIG. 14 is a schematic diagram of an information transmission device according to an embodiment of the present disclosure;

[0515] FIG. 15 is a schematic diagram of an information transmission device according to an embodiment of the present disclosure;

[0516] Fig. 16 is a schematic diagram of the information transmission device structure of the embodiment of the present disclosure;

[0517] Fig. 17 is a schematic diagram of the service request method device structure of the embodiment of the present disclosure;

[0518] Fig. 18 is a schematic diagram of the information transmission equipment structure of the embodiment of the present disclosure;

[0519] Fig. 19 is a schematic diagram of the information transmission equipment structure of the embodiment of the present disclosure;

[0520] Fig. 20 is a schematic diagram of the information transmission equipment structure of the embodiment of the present disclosure;

[0521] Fig. 21 is a schematic diagram of the information transmission equipment structure of the embodiment of the present disclosure;

[0522] Fig. 22 is a schematic diagram of the information transmission equipment structure of the embodiment of the present disclosure;

[0523] Fig. 23 is a schematic diagram of the service request equipment structure of the embodiment of the present disclosure. DETAILED DESCRIPTION

[0524] In order to make the technical problems, technical solutions and advantages of the present disclosure clearer, the following will be described in detail in combination with the drawings and specific embodiments.

[0525] Firstly, the related content of the present scheme will be introduced.

[0526] (I) Distributed;

[0527] 6G network distributed deployment will become inevitable. In order to cope with the demand of large-scale connection, ultra-low latency communication and diversification customization in the 6G era, the network needs to introduce distributed deployment mechanism.

[0528] Large-scale connection leads to the increase of base station scale, which needs to be managed efficiently. It is predicted that the traffic density of 6G era will be 10-1000 times higher than that of the 5th Generation Mobile Communication Technology (5G) (the traffic density of 5G is 10 Mbps / m 2 ), and the connection density will reach 100-1000 million devices / km 3 . 6G era is expected to use higher bandwidth spectrum to carry 6G business, and the communication base station will be "densified", which is expected to reach tens of millions. How to manage the large-scale connection of terminals, as well as the large-scale base stations and small base stations, becomes a key problem in the design of 6G network architecture.

[0529] Ultra-low latency communication requirements: Immersive interaction, vehicle-to-everything (V2X) services are becoming more mature, and such services require the network to have lower latency and faster response capabilities to achieve high real-time service experience. The network must be deployed close to the user end to support the localized deployment of control devices (such as robotic arms, intelligent cars, positioning services, etc.).

[0530] Data localization requirements: Due to security and privacy considerations, enterprise users have high requirements for the privacy and security of their own production and operation data, and have strong data localization requirements. This requires the network not only to achieve local transmission and analysis of data, but also to achieve local transmission and processing of control signaling.

[0531] (2) Network autonomy;

[0532] Network autonomy refers to the ability of a 6G network to self-organize, self-manage, and self-optimize. Among them:

[0533] Self-organization can support flexible deployment of network capabilities, dynamic connection, efficient interworking, and plug-and-play. Compared with 5G and previous networks, which require long deployment time through pre-planning, fixed configuration, and networking, 6G faces future distributed deployment and needs to support dynamic establishment and dynamic optimization of network connections, so it can consider introducing a universal and quickly interoperable IP protocol.

[0534] The management complexity brought about by distributed deployment needs to be solved by network self-management. Compared with centralized network architecture, the rapid interaction between distributedly deployed (thousands or millions) edge nodes of network nodes multiplies the complexity of network management, and network autonomy needs to be introduced. The control plane functions of the 6G network (such as mobility management, session management, data storage, and other core capabilities) need to be distributed and deployed at the network edge, and control information needs to be processed and responded to reasonably. To support the on-demand sinking of capabilities, the related network resources and network connections also need to be deployed.

[0535] To manage diverse network functions and adapt to diverse scenarios, network self-optimization capabilities need to be introduced. A large number of diversified and customized functions or services will appear in the 6G network to adapt to the customized requirements of thousands of industries. It will be extremely complex to design, quickly launch, version manage, and schedule the entire life cycle of diverse services.

[0536] (3) 6G network distributed deployment architecture;

[0537] Based on the design concept of distribution, autonomy, and self-containment, a 6G networking design is proposed, namely the Distributed Autonomous Network (DAN) architecture, which can be as shown in FIG. 1. Among them:

[0538] The DAN network architecture is composed of a distributed small cloud unit (SCU) and related protocols. The SCU is the most critical module unit of the DAN architecture, can be distributedly deployed in a network, and has self-contained and autonomous capabilities. The micro network in the figure refers to the SCU.

[0539] Based on the above, the present disclosure aims at the problem of terminal access failure under the distributed autonomous architecture in the prior art, and provides an information transmission method, as shown in FIG. 2, which includes the following steps:

[0540] Step 21: The first network function sends a first request to the second network function; wherein the first request is used to request at least one of the following: authentication of a terminal or a first terminal identifier of the terminal; obtaining address information of a third network function and / or a fourth network function; subscription information of the terminal; context information of the terminal.

[0541] The information transmission method provided by the embodiment of the present disclosure can support requesting centralized SCU for authentication or obtaining subscription through distributed SCU, solve the problem of incomplete authentication or subscription information of the distributed SCU, and thus support avoiding the problem of terminal access failure under the distributed autonomous architecture.

[0542] The first request includes the first terminal identifier of the terminal. In this way, the first terminal identifier can be accurately transmitted.

[0543] Further, the information transmission method further includes: the first network function receives first information sent by the second network function; and the first information includes at least one of the following: a second terminal identifier, the second terminal identifier being related to the first terminal identifier; address information of the third network function; address information of the fourth network function; subscription information of the terminal; and context information of the terminal. In this way, the first information can be accurately obtained.

[0544] The first network function sends a first request to a second network function, including: the first network function sends the first request to the second network function according to the inability to select a fifth network function and / or a sixth network function; or the first network function sends the first request to the second network function when the first network function is unable to select the fifth network function and / or the sixth network function. This can specifically implement sending a first request; the present scheme does not limit the selection method of the fifth network function or the selection method of the sixth network function, and a possible implementation is to select according to a UE identifier (such as a subscription concealed identifier (SUCI) or a subscription permanent identifier (SUPI)).

[0545] Further, the method further includes: the first network function sends a second request to the second network function, the second request carrying the second terminal identifier, and the second request being used to request to obtain the context of the terminal and / or the subscription information of the terminal; and the first network function receives the context of the terminal and / or the subscription information of the terminal sent by the second network function. This can implement obtaining the context of the terminal and / or the subscription information of the terminal.

[0546] The first network function sends a second request to the second network function, including: the first network function sends the second request to the second network function according to the inability to select the sixth network function; or the first network function sends the second request to the second network function when the first network function is unable to select the sixth network function. This can specifically implement sending a second request; the present scheme does not limit the selection method of the sixth network function, and a possible implementation is to select according to a UE identifier (such as a SUCI or a SUPI).

[0547] Further, the method further includes: the first network function requests the third network function and / or the fourth network function to perform authentication; and / or, the first network function performs authentication with the third network function and / or the fourth network function. This can support specific implementation of authentication operations.

[0548] In the embodiments of the present disclosure, the information transmission method further includes: the first network function receives the context of the terminal and / or the subscription information of the terminal sent by the fourth network function. This can also accurately obtain the context of the terminal and / or the subscription information of the terminal.

[0549] The first network function is an Access and Mobility Management Function (AMF), and / or the second network function is an AMF, and / or the third network function is an Authentication Server Function (AUSF), and / or the fourth network function is a Unified Data Management (UDM), and / or the fifth network function is an AUSF, and / or the sixth network function is a UDM, and / or the first terminal identifier is a concealed terminal identifier, and / or the second terminal identifier is a permanent terminal identifier. In this way, the related network functions and identifiers can be specified. The first terminal identifier (concealed terminal identifier) can be a SUCI (Subscription Concealed Identifier), and the second terminal identifier (permanent terminal identifier) can be a SUPI (Subscription Permanent Identifier), but the present application is not limited thereto.

[0550] In the embodiments of the present application, the first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit, and / or one or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function. In this way, the present application can support various network functions.

[0551] The embodiments of the present application also provide an information transmission method, as shown in FIG. 3, comprising:

[0552] In step 31, the second network function receives the first request sent by the first network function. The first request is used to request at least one of the following: authentication of a terminal or a first terminal identifier of the terminal, address information of the third network function and / or the fourth network function, subscription information of the terminal, and context information of the terminal.

[0553] The information transmission method provided by the embodiments of the present application can receive, by the second network function, the first request sent by the first network function. The first request is used to request at least one of the following: authentication of a terminal or a first terminal identifier of the terminal, address information of the third network function and / or the fourth network function, subscription information of the terminal, and context information of the terminal. The present application can support requesting authentication or subscription of a centralized SCU by a distributed SCU, and solve the problem of incomplete authentication or subscription information of the distributed SCU, thereby supporting avoiding terminal access failure in a distributed autonomous architecture.

[0554] The first request includes a first terminal identifier of the terminal. In this way, the first terminal identifier can be accurately transmitted.

[0555] Further, the information transmission method further includes: the second network function sends first information to the first network function; and the first information includes at least one of the following: a second terminal identifier, the second terminal identifier being related to the first terminal identifier; address information of the third network function; address information of the fourth network function; subscription information of the terminal; and context information of the terminal. In this way, the first network function can accurately obtain the first information.

[0556] Further, the method further includes: the second network function receives a second request sent by the first network function, the second request carrying the second terminal identifier, and the second request being used to request to obtain context of the terminal and / or subscription information of the terminal; and the second network function sends the context of the terminal and / or the subscription information of the terminal to the first network function. In this way, the first network function can realize obtaining of the context of the terminal and / or the subscription information of the terminal.

[0557] The first network function is an access and mobility management function (AMF), the second network function is the AMF, the third network function is an authentication server function (AUSF), the fourth network function is a unified data management (UDM), the first terminal identifier is a hidden terminal identifier, and the second terminal identifier is a permanent terminal identifier. In this way, the related network functions and identifiers can be specified. The first terminal identifier (hidden terminal identifier) can be a subscription concealed identifier (SUCI), and the second terminal identifier (permanent terminal identifier) can be a subscription permanent identifier (SUPI), but is not limited thereto.

[0558] In the embodiments of the present disclosure, the first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit; and / or one or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function. In this way, the present scheme can be supported by various network functions.

[0559] The embodiments of the present disclosure further provide an information transmission method, as shown in FIG. 4, the method includes:

[0560] Step 41: a seventh network function sends a third request to an eighth network function, and the third request includes a data network name (DNN).

[0561] The information transmission method provided in the embodiments of the present disclosure sends a third request to an eighth network function through a seventh network function, and the third request includes a data network name (DNN). The method can support centralized UPF selection and insertion through a distributed SCU, and solve the problem that a terminal cannot access a centrally deployed service through a distributed autonomous architecture, thereby supporting avoiding terminal access failure under the distributed autonomous architecture.

[0562] In the embodiments of the present disclosure, the seventh network function sends the third request to the eighth network function in the case that the first network or the first network function set does not support the DNN, or in the case that the seventh network function does not support the DNN. Alternatively, the seventh network function sends the third request to the eighth network function according to whether the first network or the first network function set supports the DNN, and / or whether the seventh network function supports the DNN. Alternatively, the seventh network function sends the third request to the eighth network function when the first network or the first network function set does not support the DNN, and / or when the seventh network function does not support the DNN. In this way, the sending of the third request can be implemented.

[0563] In the embodiments of the present disclosure, the seventh network function is a session management function (SMF), and / or the eighth network function is an SMF, and / or the first network is a local micro cloud unit (SCU) and / or a distributed SCU, and / or the first network function set is a local SCU and / or a distributed SCU. In this way, the related network functions and networks can be specified and clarified.

[0564] In the embodiments of the present disclosure, the seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit, and / or the eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit. In this way, the present solution can be implemented by various network functions.

[0565] The embodiments of the present disclosure also provide an information transmission method, as shown in FIG. 5, which includes the following steps:

[0566] In step 51, the eighth network function receives the third request sent by the seventh network function, and the third request includes a DNN.

[0567] The information transmission method provided in the embodiments of the present disclosure receives a third request sent by a seventh network function through an eighth network function, the third request comprising a DNN; the distributed SCU can be used to request the centralized SCU to select and insert the centralized UPF, thereby solving the problem that the distributed SCU cannot be used to access the centrally deployed service, and thereby supporting the problem of avoiding terminal access failure under the distributed autonomous architecture.

[0568] The seventh network function is a session management function (SMF), and / or the eighth network function is an SMF. In this way, the related network functions can be specified and made clear.

[0569] In the embodiments of the present disclosure, the seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit; and / or the eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit. In this way, the present scheme can be supported by various network functions.

[0570] The embodiments of the present disclosure also provide an information transmission method, as shown in FIG. 6, the method comprising step 61, which comprises at least one of the following:

[0571] The seventh network function obtains first subscription information from a ninth network function through a first session, wherein the first session is a session through which an eighth network function obtains second subscription information from a fourth network function;

[0572] The seventh network function obtains first session policy information from a tenth network function through the first session, and the first session is a session through which an eighth network function obtains second session policy information from an eleventh network function.

[0573] The execution precondition of step 61 can include but is not limited to being triggered by a DNN or a third request, without limitation. The first session is a session through which the eighth network function obtains the second subscription information from the fourth network function, that is, the first session is a session based on which the eighth network function obtains the second subscription information from the fourth network function; and / or the seventh network function obtains the first subscription information from the ninth network function through the first session, wherein the first session is a session through which the eighth network function obtains the second subscription information from the fourth network function, which can be understood as that the seventh network function obtains the first subscription information from the ninth network function through the first session, and the eighth network function obtains the second subscription information from the fourth network function through the first session; and / or the first session is a session through which the eighth network function obtains the second session policy information from the eleventh network function, that is, the first session is a session based on which the eighth network function obtains the second session policy information from the eleventh network function; and / or the seventh network function obtains the first session policy information from the tenth network function through the first session, and the first session is a session through which the eighth network function obtains the second session policy information from the eleventh network function, but is not limited thereto.

[0574] The information transmission method provided by the embodiment of the present disclosure can be used to obtain the first subscription information from the ninth network function through the first session by the seventh network function, wherein the first session is a session through which the eighth network function obtains the second subscription information from the fourth network function; and / or the seventh network function obtains the first session policy information from the tenth network function through the first session, wherein the first session is a session through which the eighth network function obtains the second session policy information from the eleventh network function; which can support requesting the centralized SCU to select and insert the centralized UPF through the distributed SCU, solve the problem that the distributed SCU cannot access the centrally deployed service, and thus support avoiding the terminal access failure under the distributed autonomous architecture.

[0575] The first session policy information is generated by the tenth network function, and the second session policy information is generated by the eleventh network function. In this way, the generation object of the session policy information can be determined.

[0576] In the embodiments of the present disclosure, the fourth network function is a unified data management (UDM), and / or the seventh network function is a session management function (SMF), and / or the eighth network function is an SMF, and / or the ninth network function is a UDM, and / or the tenth network function is a policy control function (PCF), and / or the eleventh network function is a PCF. In this way, the related network functions can be specified and clear.

[0577] Among them, one or more of the following is a distributed network function, or at least one of the following is a network function of a distributed network, or at least one of the following is a network function of a distributed micro cloud unit: the seventh network function, the ninth network function, and the tenth network function; and / or one or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the fourth network function, the eighth network function, and the eleventh network function. In this way, the present solution can be implemented by various network functions.

[0578] The embodiments of the present disclosure also provide a service request method, as shown in FIG. 7, applied to a twelfth network function of a second network, and the method comprises:

[0579] Step 71: receiving a fourth request message from a thirteenth network function of a third network;

[0580] Step 72: sending second information to the thirteenth network function, wherein the second information carries at least one of the following:

[0581] Indication information supporting a non-direct communication mode (Model D) of proxy discovery;

[0582] Indication information supporting a non-direct communication mode (Model C) of non-proxy discovery;

[0583] Indication information for selecting a network function (NF) in a target domain;

[0584] Identity (ID) information of a candidate network function instance (NF instance);

[0585] Information of a service communication proxy (SCP) in the target domain.

[0586] Among them, the "domain" in the target domain can refer to a network domain, such as a public land mobile network (PLMN) domain.

[0587] The information transmission method provided by the embodiments of the present disclosure comprises the following steps: receiving a fourth request message from a thirteenth network function of a third network; and sending second information to the thirteenth network function, wherein the second information carries at least one of the following: indication information of a non-direct communication mode supporting proxy discovery; indication information of a non-direct communication mode not supporting proxy discovery; indication information of selecting a network function (NF) in a target domain; identification information of a candidate network function instance; information of a service communication proxy (SCP) in the target domain; and information capable of supporting accurate service request and avoiding terminal access failure in a distributed autonomous architecture. Specifically, roaming may involve a cross-network access NF service (network function service) between two PLMNs (public land mobile networks); and the basis of cross-network access is cross-network element discovery. In the NF discovery scenario between multiple PLMNs, there may be problems: 1) not supporting avoiding disclosure of sensitive or frequently changing NF information in the target network, such as load and capacity information; 2) the operator's strategy for network internal NF discovery and selection is independent of the NF implementation of other networks; and 3) when using an indirect communication mode based on SCP discovery, an out-of-network SCP does not know the information of a candidate NF instance. Therefore, how to realize cross-network element discovery without exposing sensitive information in the subnet is a technical problem to be solved. The present scheme supports local NFs requesting target network discovery and selecting target NFs in the target network in the local network in a non-direct communication mode, thereby solving the above cross-network element discovery problem.

[0588] The fourth request message is forwarded by the thirteenth network function according to a fifth request message of a network function service consumer (NF service consumer), and the fifth request message is used by the network function service consumer to request discovery of a target network function in the target domain. The fifth request message carries at least one of the following: network function load requirement; network function selection mechanism; identification information of the second network; identification information of the third network; and NF type of the network function service consumer. In this way, the sending of related messages and the carrying of information can be clearly defined. The fourth request message can also be understood as being obtained by the thirteenth network function according to the fifth request message of the network function service consumer (NF service consumer), and / or the fifth request message can also be understood as being used by the network function service consumer to request discovery of a target network function in the target domain, but is not limited thereto. The target domain is the second network, and the target network function in the target domain can also be referred to as the target network function in the second network, but is not limited thereto.

[0589] In the embodiments of the present disclosure, when the second information contains the indication information of the non-direct communication mode supporting non-proxy discovery, the indication information of selecting the NF in the target domain, and the identification information of the candidate network function instance, the thirteenth network function forwards the second information to the network function service consumer; and the network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function. In this way, the relevant communication process can be determined.

[0590] The fourteenth network function belongs to the third network, and the fourteenth network function is a service communication proxy SCP; the fifteenth network function belongs to the second network, and the fifteenth network function is a service communication proxy SCP; the network function service consumer communicates with the target network function through the fourteenth network function and the fifteenth network function, including: the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message; wherein the sixth request message carries at least one of the following: network function load requirement; network function selection mechanism; identification information of the second network; identification information of the third network. In this way, the communication scheme can be more specifically implemented.

[0591] In the embodiments of the present disclosure, when the second information contains the indication information of the non-direct communication mode supporting non-proxy discovery, the indication information of selecting the NF in the target domain, and the identification information of the candidate network function instance, the thirteenth network function forwards the second information to the network function service consumer; and the network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function. In this way, the relevant communication process can be determined.

[0592] The sixteenth network function belongs to the second network, and the sixteenth network function is a network repository function (NRF). The network function service consumer discovers and selects the target network function through the sixteenth network function, including that the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and forwards the sixth request message to the sixteenth network function; the sixteenth network function discovers and selects the target network function according to the sixth request message, and sends a second feedback message to the fifteenth network function; the fifteenth network function communicates with the target network function according to the second feedback message; and the sixth request message carries at least one of the following: a network function load requirement, a network function selection mechanism, identification information of the second network, and identification information of the third network. In this way, the communication scheme can be more specifically implemented. It is explained herein that the parameters carried by the sixth request message can be different in different scenarios (for example, scenario one, the fourteenth network function belongs to the third network, and the fourteenth network function is a service communication proxy SCP; the fifteenth network function belongs to the second network, and the fifteenth network function is a service communication proxy SCP; and scenario two, the sixteenth network function belongs to the second network, and the sixteenth network function is a network repository function NRF), which are different request scenarios when different replies are received, and are not limited herein.

[0593] In the embodiments of the present disclosure, when the second information contains the indication information of the non-direct communication mode supported by the proxy discovery and the indication information of the selection of the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer; and the network function service consumer discovers and selects the target network function through the fifteenth network function. In this way, the relevant communication process can also be clearly determined. The network function service consumer discovers and selects the target network function through the fifteenth network function can include that the network function service consumer communicates with the target network function through the fourteenth network function and the fifteenth network function, but is not limited thereto.

[0594] The network function service consumer discovers and selects the target network function through a fifteenth network function, including: the network function service consumer sends a sixth request message to a fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message; and the fifteenth network function communicates with the target network function; wherein the sixth request message carries at least one of the following: a network function load requirement; a network function selection mechanism; identification information of the second network; and identification information of the third network. In this way, the communication scheme can be more specifically implemented.

[0595] In the embodiments of the present disclosure, the second network is a remote public land mobile network (remote PLMN), such as a home PLMN (Home PLMN); and / or, the third network is a local public land mobile network (local PLMN), such as a serving PLMN (serving PLMN); and / or, the twelfth network function is a network repository function (NRF); and / or, the thirteenth network function is a network repository function (NRF). In this way, the related networks and network functions can be clearly defined.

[0596] In the above description, the related content of the related operations performed by each network function can be referred to each other, and repeated parts will not be described again.

[0597] The information transmission method provided by the embodiments of the present disclosure is exemplified below, wherein the first network function is taken as an example of a Distributed-Access and Mobility Management Function (D-AMF), the second network function is taken as an example of a Centralized-Access and Mobility Management Function (C-AMF), the third network function is taken as an example of a Centralized-Authentication Server Function (C-AUSF), the fourth network function is taken as an example of a Centralized-Unified Data Management (C-UDM), the fifth network function is taken as an example of an AUSF, the sixth network function is taken as an example of a UDM, the seventh network function is taken as an example of a Distributed-Session Management Function (D-SMF), the eighth network function is taken as an example of a Centralized-Session Management Function (C-SMF), the first network is taken as an example of a local micro cloud unit SCU, the first terminal identifier is taken as an example of a Subscription Concealed Identifier (SUCI), the second terminal identifier is taken as an example of a Subscription Permanent Identifier (SUPI), the ninth network function is taken as an example of a Distributed-Unified Data Management (D-UDM), the tenth network function is taken as an example of a Distributed-Policy Control Function (D-PCF), and the eleventh network function is taken as an example of a Centralized-Policy Control Function (C-PCF).

[0598] To solve the above technical problems, the embodiment of the present disclosure provides an information transmission method, which can be specifically implemented as a terminal access method under a distributed autonomous architecture, and can support solving the user equipment / terminal (User Equipment, UE) registration and authentication related problems under the distributed autonomous scenario in the new 6G network architecture. It mainly involves a centralized (Access and Mobility Management Function, AMF) as a medium, based on the interactive communication of the centralized AMF and the distributed AMF, to realize the authentication or subscription of the terminal that has not subscribed to the distributed SCU when accessing the network, and based on the communication of the centralized SMF and the distributed SMF, to realize the selection and insertion of the centralized UPF by the distributed SCU. Among them, by requesting the centralized SCU for authentication or subscription through the distributed SCU, the problem of incomplete distributed SCU authentication or subscription information can be solved; by requesting the centralized SCU to select and insert the centralized UPF through the distributed SCU, the problem of being unable to access the centralized deployed service through the distributed SCU can be solved.

[0599] The scheme provided by the embodiment of the present disclosure is specifically exemplified as follows.

[0600] (I) Embodiment 1 of the present disclosure;

[0601] In this embodiment, the distributed AMF sends a subscription concealed identifier (Subscription Concealed Identifier, SUCI) to the centralized AMF, and requests the centralized AMF to initiate authentication. The specific process can be as shown in FIG. 8, including the following steps:

[0602] 1. The terminal UE (via a radio access network (Radio Access Network, RAN)) sends a registration request to the distributed AMF, carrying the SUCI.

[0603] 2. When the distributed AMF cannot select an AUSF (authentication service function) according to the SUCI, the distributed AMF sends a request information (corresponding to the authentication request in the figure) carrying the SUCI to the centralized AMF, to request to authenticate the UE; corresponding to the first network function sending a first request to the second network function; wherein the first request is used to request to authenticate the terminal or the first terminal identifier of the terminal; and the first request includes the first terminal identifier of the terminal. The first network function sending the first request to the second network function includes: the first network function sending the first request to the second network function according to the failure to select the fifth network function and / or the sixth network function; or when the first network function fails to select the fifth network function and / or the sixth network function, sending the first request to the second network function.

[0604] - optionally, including indication information A, indicating to perform authentication.

[0605] 3. The centralized AMF selects the centralized AUSF according to the received SUCI.

[0606] 4. The authentication procedure is performed in the centralized SCU, which can refer to the current related content.

[0607] - wherein, in the authentication procedure, the C-AUSF returns a subscription permanent identifier SUPI (related to the SUCI) to the centralized AMF.

[0608] 5. The centralized AMF returns the SUPI to the distributed AMF (carried in the authentication response in the figure); corresponding to the above-mentioned first network function receiving the first information sent by the second network function; the first information includes a second terminal identifier, and the second terminal identifier is related to the first terminal identifier.

[0609] - optionally, including indication information B, indicating to request subscription information or context.

[0610] 6. When the distributed AMF cannot select a unified data management UDM according to the SUPI (cannot determine which UDM serves this procedure, specifically, cannot determine which UDM to obtain the subscription information), the distributed AMF sends a request information (corresponding to the UE context request in the figure) to the centralized AMF, carrying the SUPI. "Cannot select" can also be understood as: cannot select a suitable UDM (i.e. a UDM that stores the UE subscription information or UE context). This step corresponds to the above-mentioned first network function sending a second request to the second network function, the second request carrying the second terminal identifier, and the second request being used to request to obtain the context of the terminal and / or the subscription information of the terminal. The first network function sending the second request to the second network function includes: the first network function sending the second request to the second network function according to being unable to select the sixth network function; or, when the first network function is unable to select the sixth network function, sending the second request to the second network function.

[0611] 7. The centralized AMF obtains the subscription information of the UE or the context of the UE from the C-UDM.

[0612] - If the centralized AMF stores the subscription information of the UE or the context of the UE, step 7 can not be performed.

[0613] 8. The centralized AMF returns the UE context or the subscription information of the UE to the distributed AMF (carried in the UE context response in the figure); corresponding to the above-mentioned first network function receiving the context of the terminal and / or the subscription information of the terminal sent by the second network function.

[0614] Wherein, step 2-8 can also be executed as: the D-AMF requests the C-AMF for authentication and subscription information, after step 4 is executed, step 5-6 is skipped and step 7 is executed, and in step 8, the C-AMF returns the SUPI and subscription information to the D-AMF, etc.

[0615] 9. The distributed AMF sends the registration accept information (carrying Globally Unique Temporary UE Identity (GUTI)) to the UE (via the RAN), completing the registration.

[0616] (ii) Embodiment 2 of the present disclosure;

[0617] The embodiment scheme is that the distributed AMF sends the SUCI to the centralized AMF, and requests the centralized AMF to initiate authentication; the specific process can be as shown in FIG. 9, including the following steps:

[0618] 1. The UE (via the RAN) sends a registration request to the distributed AMF, carrying the SUCI.

[0619] 2. When the distributed AMF cannot select the AUSF according to the SUCI (i.e., cannot determine which UDM serves this process, specifically, it refers to that it cannot determine which AUSF performs this authentication), the distributed AMF sends a request information (corresponding to the centralized NF discovery request in the figure) to the centralized AMF, carrying the SUCI, to request to discover the centralized AUSF and the centralized UDM; corresponding to the above-mentioned first network function sending a first request to a second network function; wherein, the first request is used to request to obtain address information of a third network function and / or a fourth network function; the first request includes a first terminal identifier of the terminal. The first network function sending the first request to the second network function includes: the first network function sending the first request to the second network function according to the failure to select the fifth network function and / or the sixth network function; or, when the first network function fails to select the fifth network function and / or the sixth network function, sending the first request to the second network function.

[0620] Optionally, the indication information C is included, indicating to discover the C-AUSF and the C-UDM. NF in the figure represents network function.

[0621] 3. The centralized AMF selects the centralized AUSF and the centralized UDM according to the request information received from the distributed AMF.

[0622] 4. The centralized AMF returns the address of the centralized AUSF and the centralized UDM to the distributed AMF (carried in the centralized NF discovery response in the figure); the first network function receives the first information sent by the second network function; the first information includes the address information of the third network function and / or the fourth network function.

[0623] 5. The distributed D-AMF initiates UE authentication performed at the centralized AUSF and the centralized UDM; the first network function requests the third network function and / or the fourth network function to perform authentication; and / or, the first network function performs authentication with the third network function and / or the fourth network function.

[0624] 6. The distributed AMF obtains the subscription information of the UE from the centralized UDM; the first network function receives the context and / or subscription information of the terminal sent by the fourth network function.

[0625] 7. The distributed AMF sends registration acceptance information to the UE (via the RAN), completing registration.

[0626] In the above embodiments, the distributed SCU requests the centralized SCU to perform authentication or obtain subscription; wherein the SCU includes AMF, SMF, etc.

[0627] (Three) Embodiment 3 of the present disclosure;

[0628] The embodiment scheme is that the distributed SMF requests the centralized SMF to select and insert the centralized UPF according to the DNN (Data Network Name). The embodiment assumes that the distributed deployment service and the non-distributed deployment service have different DNNs. Specifically, the embodiment 3 process can be as shown in FIG. 10, including the following steps:

[0629] 1-2. The UE sends a session establishment request to the distributed SMF (via the RAN, AMF), carrying the DNN. Specifically, the UE sends a session establishment request to the D-AMF (carrying the DNN), and the D-AMF sends a session context establishment request to the D-SMF (carrying the DNN).

[0630] 3. When the distributed SMF determines that the local SCU does not support the DNN (DNN represents network; not support can be understood as unable to manage; or the network function of the SCU does not support the DNN), the distributed SMF sends a request message (corresponding to the session context establishment request in the figure) carrying the DNN to the centralized SMF to request to select a centralized UPF; corresponding to the seventh network function sending the third request to the eighth network function, the third request includes a data network name DNN. The seventh network function sends the third request to the eighth network function, including: the seventh network function sends the third request to the eighth network function in the case that the first network or the first network function set does not support the DNN, or in the case that the seventh network function does not support the DNN; and / or, the seventh network function sends the third request to the eighth network function according to that the first network or the first network function set does not support the DNN, and / or, the seventh network function does not support the DNN; and / or, the seventh network function sends the third request to the eighth network function when the first network or the first network function set does not support the DNN, and / or, the seventh network function does not support the DNN.

[0631] It should be noted that the embodiment mainly involves: the trigger condition for the D-SMF to request the C-SMF to insert the centralized user plane function (C-UPF), that is, the D-SMF initiates a request to the C-SMF to trigger subsequent operations.

[0632] 4-5. The centralized SMF establishes a session management (SM) policy association and selects a centralized UPF. Specifically, the C-SMF interacts with the C-PCF to perform SM policy association establishment; the C-SMF interacts with the C-UPF to perform N4 session establishment.

[0633] 6. The centralized SMF sends centralized core network tunnel information (Core Network (CN) Tunnel Info), such as UPF address, and SM policy (which can be carried in the session context establishment response in the figure) to the distributed SMF.

[0634] 7. The distributed SMF selects a distributed intermediate UPF (Intermediate UPF, I-UPF; that is, a UPF that is not a protocol data unit (PDU) session anchor (PSA)). Specifically, it can be realized by the D-SMF interacting with the D-UPF to perform N4 session establishment.

[0635] 8-9. Distributed SMF sends Distributed CN Tunnel Info to RAN. Specifically, it can include: D-SMF sends N1N2 message (carrying D-UPF (Distributed-User Plane Function) CN Tunnel Info) to D-AMF; D-AMF sends N2 session request (carrying D-UPF CN Tunnel Info) to RAN. Wherein, N1 represents N1 interface, and N2 represents N2 interface.

[0636] 10. RAN sends session setup accept to UE.

[0637] 11-12. RAN returns AN (Access Network) Tunnel Info to distributed SMF. Specifically, it can include: RAN sends N2 session response (carrying AN Tunnel Info) to D-AMF; D-AMF sends session context update message (carrying AN Tunnel Info) to D-SMF.

[0638] 13. Distributed SMF sends Distributed CN Tunnel Info to centralized SMF (which can be carried in the session context update message in the figure).

[0639] In the embodiment, steps 3, 4, and 5 can embody the related content of “inserting a centralized C-UPF”.

[0640] (Four) Embodiment 4 of the disclosure;

[0641] The embodiment scheme is to insert a UPF by the distributed SMF and the centralized SMF in the same PDU (Protocol Data Unit) session. The embodiment assumes that the distributed deployment service and the non-distributed deployment service have different DNNs. Specifically, the embodiment 4 flow can be as shown in FIG. 11, including the following steps:

[0642] 1-2. UE (via RAN, AMF) sends session setup request to distributed SMF. Specifically, the UE sends a session setup request (carrying DNN) to the D-AMF, and the D-AMF sends a session context setup request (carrying DNN) to the D-SMF.

[0643] 3. Distributed SMF sends session setup request to centralized SMF (corresponding to the session context setup request in the figure).

[0644] 4. In the same session, the distributed SMF and the centralized SMF respectively acquire subscription information from the distributed UDM and the centralized UDM; the seventh network function corresponds to acquiring first subscription information from the ninth network function through the first session, and the eighth network function acquires second subscription information from the fourth network function through the first session. Specifically, this step includes the following in the figure: step 4a, D-SMF and D-UDM interact to acquire subscription information; and step 4b, C-SMF and C-UDM interact to acquire subscription information.

[0645] 5. In the same session, the distributed PCF and the centralized PCF respectively generate and send session policy information to the distributed SMF and the centralized SMF; the seventh network function corresponds to acquiring first session policy information from the tenth network function through the first session; and the eighth network function acquires second session policy information from the eleventh network function through the first session; the first session policy information is generated by the tenth network function, and the second session policy information is generated by the eleventh network function. Specifically, this step includes the following in the figure: step 5a, D-SMF and D-PCF interact to establish SM policy association; and step 5b, C-SMF and C-PCF interact to establish SM policy association.

[0646] It should be noted that in the embodiment, in the same PDU session, both the D-SMF insertion and the C-SMF insertion of the D-UPF and the C-UPF occur.

[0647] 6. The distributed SMF and the centralized SMF respectively select a UPF and establish an N4 session. Specifically, this step includes the following in the figure: step 6a, D-SMF and D-UPF interact to establish an N4 session; and step 6b, C-SMF and C-UPF interact to establish an N4 session.

[0648] 7. The centralized SMF sends the centralized CN Tunnel Info (which can be carried in the session context establishment response in the figure) to the distributed SMF.

[0649] 8. The distributed D-SMF selects an uplink classifier or branching point (UL CL / BP) and establishes a tunnel according to the CN Tunnel Info, which can be referred to the related content at present and will not be repeated here.

[0650] It is explained that the related content of each embodiment can be referred to each other, and the repeated part will not be repeated.

[0651] From the above, the scheme provided by the embodiments of the disclosure relates to the following content:

[0652] Regarding D-AMF side:

[0653] Embodiment 1

[0654] 1. The D-AMF sends a request message to the C-AMF including the SUCI to request authentication of the SUCI.

[0655] 2. According to 1, the D-AMF sends the request message to the C-AMF when the D-AMF is unable to select an AUSF and / or a UDM based on the SUCI.

[0656] 3. According to 1, the D-AMF receives SUPI sent by the C-AMF, the SUPI being related to (or understood as being determinable from) the SUCI.

[0657] 4. According to 3, the D-AMF sends a request message to the C-AMF including the SUPI to request subscription information.

[0658] 5. According to 4, the D-AMF sends the request message to the C-AMF when the D-AMF is unable to select a UDM based on the SUPI.

[0659] 6. According to 4, the D-AMF receives UE context or subscription information sent by the C-AMF.

[0660] Embodiment 2

[0661] 1. The D-AMF sends a request message to the C-AMF including the SUCI to request address information of a C-AUSF and / or a C-UDM.

[0662] 2. According to 1, the D-AMF sends the request message to the C-AMF when the D-AMF is unable to select an AUSF and / or a UDM based on the SUCI.

[0663] 3. According to 1, the D-AMF receives address information of a C-AUSF and / or address information of the C-UDM sent by the C-AMF.

[0664] 4. According to 1, the D-AMF performs authentication with the C-AUSF, the C-UDM.

[0665] 5. According to 1, the D-AMF receives subscription information sent by the C-UDM.

[0666] Regarding D-SMF side:

[0667] Embodiment 3

[0668] 1. The D-SMF sends a request information to the C-SMF, carrying a DNN, to request selection of a centralized UPF.

[0669] 2. According to 1, the request information is sent when the D-SMF determines that the local SCU does not support the DNN.

[0670] Embodiment 4

[0671] 1. In the same session, the D-SMF receives first session policy information from the D-PCF, and the C-SMF receives second session policy information from the C-PCF.

[0672] 2. According to 1, the first session policy information is generated by the D-PCF, and the second session policy information is generated by the C-PCF.

[0673] 3. In the same session, the D-SMF receives first subscription information from the D-UDM, and the C-SMF receives second subscription information from the C-UDM.

[0674] In summary, the scheme provided by the embodiments of the present disclosure can solve the two problems in the distributed autonomous network in the following ways:

[0675] (1) Request the centralized SCU to perform authentication or obtain subscription through the distributed SCU, to solve the problem of incomplete authentication or subscription information of the distributed SCU;

[0676] (2) Request the centralized SCU to select and insert the centralized UPF through the distributed SCU, to solve the problem of inability to access the centrally deployed service through the distributed SCU.

[0677] The embodiments of the present disclosure further provide an information transmission apparatus, as shown in FIG. 12, which comprises:

[0678] A first sending module 121 is configured to send a first request from a first network function to a second network function.

[0679] The first request is used to request at least one of the following:

[0680] authentication of a terminal or a first terminal identifier of the terminal;

[0681] obtaining address information of a third network function and / or a fourth network function;

[0682] subscription information of the terminal;

[0683] context information of the terminal.

[0684] In the embodiments of the present disclosure, the scheme of FIG. 12 can be understood as that the first sending module 121 is suitable for sending a first request from a first network function to a second network function, that is, the first sending module 121 can be applied to perform sending the first request from the first network function to the second network function; specifically, the scheme of FIG. 12 can also be understood as that an information transmission apparatus is applied to the first network function, and the apparatus comprises the first sending module 121 configured to send the first request to the second network function, but is not limited thereto.

[0685] The information transmission apparatus provided by the embodiments of the present disclosure sends a first request from a first network function to a second network function; wherein the first request is used to request at least one of the following: authenticating a terminal or a first terminal identifier of the terminal; obtaining address information of a third network function and / or a fourth network function; subscription information of the terminal; context information of the terminal; and supporting requesting centralized SCU to authenticate or obtain subscription through distributed SCU, thereby solving the problem of incomplete authentication or subscription information of the distributed SCU, and supporting avoiding the problem of terminal access failure under the distributed autonomous architecture.

[0686] The first request comprises the first terminal identifier of the terminal.

[0687] Further, the information transmission apparatus further comprises a first receiving module configured to receive, by the first network function, first information sent by the second network function; and the first information comprises at least one of the following: a second terminal identifier, the second terminal identifier being related to the first terminal identifier; address information of the third network function; address information of the fourth network function; subscription information of the terminal; and context information of the terminal.

[0688] The first network function sending the first request to the second network function comprises: the first network function sending the first request to the second network function according to that the first network function cannot select a fifth network function and / or a sixth network function; or the first network function sending the first request to the second network function when the first network function cannot select the fifth network function and / or the sixth network function.

[0689] Further, the apparatus further comprises a second sending module configured to send, by the first network function, a second request to the second network function, the second request carrying the second terminal identifier, and the second request being used to request obtaining context of the terminal and / or subscription information of the terminal; and a second receiving module configured to receive, by the first network function, the context of the terminal and / or the subscription information of the terminal sent by the second network function.

[0690] The first network function sends a second request to the second network function, including: the first network function sends the second request to the second network function according to the failure to select the sixth network function; or the first network function sends the second request to the second network function when the first network function fails to select the sixth network function.

[0691] Further, the apparatus further includes: a first processing module, configured to request the third network function and / or the fourth network function to perform authentication; and / or, the first network function performs authentication with the third network function and / or the fourth network function.

[0692] In the embodiments of the present disclosure, the information transmission apparatus further includes: a third receiving module, configured to receive, by the first network function, the context of the terminal and / or the subscription information of the terminal sent by the fourth network function.

[0693] The first network function is an access and mobility management function (AMF), and / or the second network function is an AMF, and / or the third network function is an authentication server function (AUSF), and / or the fourth network function is a unified data management (UDM), and / or the fifth network function is an AUSF, and / or the sixth network function is a UDM, and / or the first terminal identifier is a concealed terminal identifier, and / or the second terminal identifier is a permanent terminal identifier.

[0694] In the embodiments of the present disclosure, the first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit; and / or one or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function.

[0695] The related implementation embodiments of the information transmission method are applicable to the embodiments of the apparatus, and can achieve the same technical effects.

[0696] The embodiments of the present disclosure further provide an information transmission apparatus, as shown in FIG. 13, including:

[0697] A fourth receiving module 131 is configured to receive, by the second network function, a first request sent by the first network function.

[0698] The first request is used to request at least one of the following:

[0699] authentication of a terminal or a first terminal identifier of the terminal;

[0700] obtain address information of the third network function and / or the fourth network function;

[0701] subscription information of the terminal;

[0702] context information of the terminal.

[0703] The information transmission apparatus provided by the embodiments of the present disclosure receives a first request sent by a first network function through a second network function; wherein the first request is used to request at least one of the following: to authenticate a terminal or a first terminal identifier of the terminal; to obtain address information of a third network function and / or a fourth network function; subscription information of the terminal; context information of the terminal; and to support requesting centralized SCU for authentication or obtaining subscription through distributed SCU, thereby solving the problem of incomplete authentication or subscription information of the distributed SCU, and supporting to avoid the problem of terminal access failure under the distributed autonomous architecture.

[0704] The first request includes the first terminal identifier of the terminal.

[0705] Further, the information transmission apparatus further includes a third sending module configured to send first information from the second network function to the first network function; wherein the first information includes at least one of the following: a second terminal identifier, the second terminal identifier being related to the first terminal identifier; address information of the third network function; address information of the fourth network function; subscription information of the terminal; and context information of the terminal.

[0706] In the embodiments of the present disclosure, the apparatus further includes a fifth receiving module configured to receive a second request sent by the first network function by the second network function, the second request carrying the second terminal identifier, and the second request being used to request to obtain context information of the terminal and / or subscription information of the terminal; and a fourth sending module configured to send the context information of the terminal and / or the subscription information of the terminal from the second network function to the first network function.

[0707] The first network function is an access and mobility management function (AMF); and / or, the second network function is an AMF; and / or, the third network function is an authentication server function (AUSF); and / or, the fourth network function is a unified data management (UDM); and / or, the first terminal identifier is a concealed terminal identifier; and / or, the second terminal identifier is a permanent terminal identifier.

[0708] In the embodiments of the present disclosure, the first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit; and / or, one or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function.

[0709] The related implementation embodiments of the information transmission method are applicable to the embodiments of the device, and can achieve the same technical effects.

[0710] The embodiments of the present disclosure also provide an information transmission device, as shown in FIG. 14, the device comprises:

[0711] The fifth sending module 141 is configured to send, by the seventh network function, a third request to an eighth network function, and the third request comprises a data network name DNN.

[0712] The information transmission device provided by the embodiments of the present disclosure can support requesting, by a distributed SCU, a centralized SCU to select and insert a centralized UPF, and solve the problem that a distributed autonomous architecture cannot access a centralized deployed service, thereby supporting avoiding terminal access failure in the distributed autonomous architecture.

[0713] The seventh network function sends a third request to an eighth network function, including: the seventh network function sends a third request to the eighth network function when the first network or the first network function set does not support the DNN, or when the seventh network function does not support the DNN; and / or, the seventh network function sends the third request to the eighth network function according to that the first network or the first network function set does not support the DNN, and / or, the seventh network function does not support the DNN; and / or, the seventh network function sends the third request to the eighth network function when the first network or the first network function set does not support the DNN, and / or, the seventh network function does not support the DNN.

[0714] In the embodiments of the present disclosure, the seventh network function is a session management function SMF; and / or, the eighth network function is an SMF; and / or, the first network is a local micro cloud unit SCU and / or a distributed SCU; and / or, the first network function set is a local SCU and / or a distributed SCU.

[0715] In the embodiments of the present disclosure, the seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit; and / or, the eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit.

[0716] The related implementation embodiments of the information transmission method are applicable to the embodiments of the device, and the same technical effects can be achieved.

[0717] The embodiments of the present disclosure further provide an information transmission device, as shown in FIG. 15, comprising:

[0718] The sixth receiving module 151 is configured to receive, by the eighth network function, a third request sent by the seventh network function, wherein the third request comprises a DNN.

[0719] The information transmission device provided by the embodiments of the present disclosure can support requesting, by a distributed SCU, a centralized SCU to select and insert a centralized UPF, and solve the problem that a distributed autonomous architecture cannot access a centralized deployed service, thereby supporting avoiding terminal access failure in the distributed autonomous architecture.

[0720] The seventh network function is a session management function (SMF), and / or the eighth network function is an SMF.

[0721] In the embodiments of the present disclosure, the seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit; and / or, the eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit.

[0722] The related implementation embodiments of the information transmission method are applicable to the embodiments of the device, and the same technical effects can be achieved.

[0723] The embodiments of the present disclosure further provide an information transmission device, as shown in FIG. 16, wherein the device (comprising modules such as the second processing module 161) is configured to perform at least one of the following:

[0724] The seventh network function obtains first subscription information from the ninth network function through a first session, wherein the first session is a session through which the eighth network function obtains second subscription information from the fourth network function;

[0725] The seventh network function obtains first session policy information from a tenth network function through the first session, wherein the first session is a session through which an eighth network function obtains second session policy information from an eleventh network function.

[0726] The information transmission apparatus provided in the embodiments of the present disclosure can support requesting centralized SCU selection and inserting a centralized UPF through a distributed SCU, and solve the problem that a distributed autonomous architecture cannot access a centralized service, thereby supporting avoiding terminal access failure in the distributed autonomous architecture.

[0727] The first session policy information is generated by the tenth network function, and the second session policy information is generated by the eleventh network function.

[0728] In the embodiments of the present disclosure, the fourth network function is a unified data management (UDM), the seventh network function is a session management function (SMF), the eighth network function is an SMF, the ninth network function is a UDM, the tenth network function is a policy control function (PCF), and the eleventh network function is a PCF.

[0729] In the embodiments of the present disclosure, one or more of the following is a distributed network function, or at least one of the following is a network function of a distributed network, or at least one of the following is a network function of a distributed micro cloud unit: the seventh network function, the ninth network function, and the tenth network function; and / or one or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the fourth network function, the eighth network function, and the eleventh network function.

[0730] The related implementation embodiments of the information transmission method are applicable to the embodiments of the apparatus, and can achieve the same technical effects.

[0731] The embodiments of the present disclosure also provide a service request apparatus, as shown in FIG. 17, applied to a twelfth network function of a second network, and the apparatus comprises:

[0732] The seventh receiving module 171 is configured to receive a fourth request message from a thirteenth network function of a third network.

[0733] The sixth sending module 172 is configured to send second information to the thirteenth network function, and the second information carries at least one of the following:

[0734] indication information of a non-direct communication mode supporting proxy discovery;

[0735] indication information of a non-direct communication mode not supporting proxy discovery;

[0736] indication information of selecting a network function NF in a target domain;

[0737] identification information of a candidate network function instance;

[0738] information of a service communication proxy SCP in the target domain.

[0739] The information transmission device provided in the embodiments of the present disclosure receives a fourth request message from a thirteenth network function of a third network, and sends second information to the thirteenth network function, wherein the second information carries at least one of the following: indication information of a non-direct communication mode supporting proxy discovery; indication information of a non-direct communication mode not supporting proxy discovery; indication information of selecting a network function NF in a target domain; identification information of a candidate network function instance; information of a service communication proxy SCP in the target domain; and the device can support accurate service request and avoid terminal access failure in a distributed autonomous architecture.

[0740] The fourth request message is forwarded by the thirteenth network function according to a fifth request message of a network function service consumer, and the fifth request message is used to request to discover a target network function in the target domain; and the fifth request message carries at least one of the following: network function load requirement; network function selection mechanism; identification information of the second network; identification information of the third network; and NF type of the network function service consumer.

[0741] In the embodiments of the present disclosure, when the second information contains indication information of a non-direct communication mode not supporting proxy discovery, indication information of selecting a network function NF in a target domain, and identification information of a candidate network function instance, the thirteenth network function forwards the second information to the network function service consumer; and the network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function.

[0742] The fourteenth network function belongs to the third network, and the fourteenth network function is a service communication proxy (SCP); the fifteenth network function belongs to the second network, and the fifteenth network function is a service communication proxy (SCP); the network function service consumer communicates with the target network function through the fourteenth network function and the fifteenth network function, including that the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message; wherein the sixth request message carries at least one of the following: a network function load requirement; a network function selection mechanism; identification information of the second network; identification information of the third network.

[0743] In the embodiments of the present disclosure, when the second information contains the indication information of the non-direct communication mode supporting the non-proxy discovery and the indication information of selecting the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer; and the network function service consumer discovers and selects the target network function through a sixteenth network function.

[0744] The sixteenth network function belongs to the second network, and the sixteenth network function is a network repository function (NRF); the network function service consumer discovers and selects the target network function through the sixteenth network function, including that the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and forwards the sixth request message to the sixteenth network function; the sixteenth network function discovers and selects the target network function according to the sixth request message, and sends a second feedback message to the fifteenth network function; the fifteenth network function communicates with the target network function according to the second feedback message; wherein the sixth request message carries at least one of the following: a network function load requirement; a network function selection mechanism; identification information of the second network; identification information of the third network.

[0745] In the embodiments of the present disclosure, when the second information contains the indication information of the non-direct communication mode supporting the proxy discovery and the indication information of selecting the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer; and the network function service consumer discovers and selects the target network function through a fifteenth network function.

[0746] The network function service consumer discovers and selects the target network function through a fifteenth network function, including: the network function service consumer sends a sixth request message to a fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message; and the fifteenth network function communicates with the target network function; wherein the sixth request message carries at least one of the following: a network function load requirement; a network function selection mechanism; identification information of the second network; and identification information of the third network.

[0747] In the embodiments of the present disclosure, the second network is a remote public land mobile network; and / or, the third network is a local public land mobile network; and / or, the twelfth network function is a network repository function (NRF); and / or, the thirteenth network function is a network repository function (NRF).

[0748] The related implementation embodiments of the service request method are applicable to the embodiments of the device, and the same technical effects can be achieved.

[0749] The embodiments of the present disclosure also provide an information transmission device, as shown in FIG. 18, including: a transceiver 181;

[0750] The transceiver 181 is configured to send a first request from a first network function to a second network function.

[0751] The first request is used to request at least one of the following:

[0752] authentication of a terminal or a first terminal identifier of the terminal;

[0753] obtaining address information of a third network function and / or a fourth network function;

[0754] subscription information of the terminal;

[0755] context information of the terminal.

[0756] The information transmission device can be implemented as a first network function, but is not limited thereto. In the embodiments of the present disclosure, the scheme of FIG. 18 can be understood as that the transceiver 181 is applicable to sending, by a first network function, a first request to a second network function, that is, the transceiver 181 can be applied to performing sending, by the first network function, the first request to the second network function; specifically, the scheme of FIG. 18 can also be understood as that an information transmission device is applied to a first network function, and the device includes the transceiver 181 configured to send, by the first network function, the first request to the second network function, but is not limited thereto. The information transmission device can further include a processor capable of communicating with the transceiver 181, which is not limited herein.

[0757] The information transmission device provided in the embodiments of the present disclosure sends a first request to a second network function through a first network function; wherein the first request is used to request at least one of the following: authentication of a terminal or a first terminal identifier of the terminal; address information of a third network function and / or a fourth network function; subscription information of the terminal; context information of the terminal; and support for requesting centralized SCU authentication or subscription through distributed SCU, thereby solving the problem of incomplete distributed SCU authentication or subscription information, and supporting avoiding terminal access failure in a distributed autonomous architecture.

[0758] The first request includes the first terminal identifier of the terminal.

[0759] In the embodiments of the present disclosure, the transceiver is further configured to: receive, by the first network function, first information sent by the second network function; and the first information includes at least one of the following: a second terminal identifier, the second terminal identifier being related to the first terminal identifier; address information of the third network function; address information of the fourth network function; subscription information of the terminal; and context information of the terminal.

[0760] The first network function sends the first request to the second network function, including: the first network function sends the first request to the second network function according to the inability to select a fifth network function and / or a sixth network function; or the first network function sends the first request to the second network function when the first network function is unable to select the fifth network function and / or the sixth network function.

[0761] In the embodiments of the present disclosure, the transceiver is further configured to: send, by the first network function, a second request to the second network function, the second request carrying the second terminal identifier, and the second request being used to request to obtain context of the terminal and / or subscription information of the terminal; and receive, by the first network function, the context of the terminal and / or the subscription information of the terminal sent by the second network function.

[0762] The first network function sends a second request to the second network function, including: the first network function sends the second request to the second network function according to the failure to select the sixth network function; or the first network function sends the second request to the second network function when the first network function fails to select the sixth network function.

[0763] In the embodiments of the present disclosure, the transceiver is further configured to: the first network function requests the third network function and / or the fourth network function to perform authentication; and / or, the first network function performs authentication with the third network function and / or the fourth network function.

[0764] The transceiver is further configured to: the first network function receives the context of the terminal and / or the subscription information of the terminal sent by the fourth network function.

[0765] In the embodiments of the present disclosure, the first network function is an access and mobility management function (AMF); and / or, the second network function is an AMF; and / or, the third network function is an authentication server function (AUSF); and / or, the fourth network function is a unified data management (UDM); and / or, the fifth network function is an AUSF; and / or, the sixth network function is a UDM; and / or, the first terminal identifier is a concealed terminal identifier; and / or, the second terminal identifier is a permanent terminal identifier.

[0766] In the embodiments of the present disclosure, the first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit; and / or, one or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function.

[0767] The related implementation embodiments of the information transmission method are applicable to the embodiments of the device, and the same technical effects can be achieved.

[0768] The embodiments of the present disclosure also provide an information transmission device, as shown in FIG. 19, comprising: a transceiver 191;

[0769] The transceiver 191 is configured to: the second network function receives a first request sent by the first network function.

[0770] The first request is used to request at least one of the following:

[0771] authentication of a terminal or a first terminal identifier of the terminal;

[0772] obtaining address information of a third network function and / or a fourth network function;

[0773] subscription information of the terminal;

[0774] context information of the terminal.

[0775] The information transmission device can be implemented as a second network function, but is not limited thereto.

[0776] The information transmission device provided by the embodiments of the present disclosure receives a first request sent by a first network function through a second network function; wherein the first request is used to request at least one of the following: authentication of a terminal or a first terminal identifier of the terminal; obtaining address information of a third network function and / or a fourth network function; subscription information of the terminal; context information of the terminal; and supporting authentication or obtaining subscription of a centralized SCU through a distributed SCU, thereby solving the problem of incomplete authentication or subscription information of the distributed SCU, and supporting to avoid terminal access failure under a distributed autonomous architecture.

[0777] The first request includes the first terminal identifier of the terminal.

[0778] In the embodiments of the present disclosure, the transceiver is further configured to: send, by the second network function, first information to the first network function; and the first information includes at least one of the following: a second terminal identifier, the second terminal identifier being related to the first terminal identifier; address information of the third network function; address information of the fourth network function; subscription information of the terminal; and context information of the terminal.

[0779] The transceiver is further configured to: receive, by the second network function, a second request sent by the first network function, the second request carrying the second terminal identifier, the second request being used to request to obtain context information of the terminal and / or subscription information of the terminal; and send, by the second network function, the context information of the terminal and / or the subscription information of the terminal to the first network function.

[0780] In the embodiments of the present disclosure, the first network function is an access and mobility management function (AMF); and / or, the second network function is an AMF; and / or, the third network function is an authentication server function (AUSF); and / or, the fourth network function is a unified data management (UDM); and / or, the first terminal identifier is a concealed terminal identifier; and / or, the second terminal identifier is a permanent terminal identifier.

[0781] In the embodiments of the present disclosure, the first network function is a distributed network function, or the first network function is a network function of a distributed network, or the first network function is a network function of a distributed micro cloud unit; and / or, one or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the second network function, the third network function, and the fourth network function.

[0782] The related implementation embodiments of the information transmission method are applicable to the embodiments of the device, and the same technical effects can also be achieved.

[0783] The present disclosure also provides an information transmission device, as shown in FIG. 20, the device comprises: a transceiver 201;

[0784] The transceiver 201 is configured to send, by a seventh network function, a third request to an eighth network function, and the third request comprises a data network name DNN.

[0785] The information transmission device can be implemented as a seventh network function, but is not limited thereto.

[0786] The information transmission device provided by the embodiments of the present disclosure sends, by a seventh network function, a third request to an eighth network function, and the third request comprises a data network name DNN; can support requesting a centralized SCU to select and insert a centralized UPF through a distributed SCU, and solve the problem that a centralized deployed service cannot be accessed through a distributed SCU, thereby supporting avoiding the problem of terminal access failure under a distributed autonomous architecture.

[0787] The seventh network function sends, to the eighth network function, the third request, including: the seventh network function sends, to the eighth network function, the third request when the first network or the first network function set does not support the DNN, or when the seventh network function does not support the DNN; and / or, the seventh network function sends, to the eighth network function, the third request according to that the first network or the first network function set does not support the DNN, and / or, the seventh network function does not support the DNN; and / or, the seventh network function sends, to the eighth network function, the third request when the first network or the first network function set does not support the DNN, and / or, the seventh network function does not support the DNN.

[0788] In the embodiments of the present disclosure, the seventh network function is a session management function SMF; and / or, the eighth network function is an SMF; and / or, the first network is a local micro cloud unit SCU and / or a distributed SCU; and / or, the first network function set is a local SCU and / or a distributed SCU.

[0789] In the embodiments of the present disclosure, the seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit; and / or, the eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit.

[0790] The related implementation embodiments of the information transmission method are applicable to the embodiments of the device, and the same technical effects can be achieved.

[0791] The present disclosure also provides an information transmission device, as shown in FIG. 21, which includes a transceiver 211;

[0792] The transceiver 211 is configured to receive, by the eighth network function, a third request sent by the seventh network function, and the third request includes a DNN.

[0793] The information transmission device can be implemented as the eighth network function, but is not limited thereto.

[0794] The information transmission device provided by the embodiments of the present disclosure receives, by the eighth network function, a third request sent by the seventh network function, and the third request includes a DNN; and can support requesting, by a distributed SCU, a centralized SCU to select and insert a centralized UPF, thereby solving the problem of being unable to access a centralized deployed service through a distributed SCU, and supporting avoiding terminal access failure under a distributed autonomous architecture.

[0795] The seventh network function is a session management function (SMF), and / or the eighth network function is an SMF.

[0796] In the embodiments of the present disclosure, the seventh network function is a distributed network function, or the seventh network function is a network function of a distributed network, or the seventh network function is a network function of a distributed micro cloud unit; and / or, the eighth network function is a centralized network function, or the eighth network function is a network function of a centralized network, or the eighth network function is a network function of a centralized micro cloud unit.

[0797] The related implementation embodiments of the information transmission method are applicable to the embodiments of the device, and the same technical effects can be achieved.

[0798] The present disclosure also provides an information transmission device, as shown in FIG. 22, which includes a transceiver 221; and the transceiver 221 is configured to perform at least one of the following:

[0799] The seventh network function obtains first subscription information from the ninth network function through a first session, wherein the first session is a session through which the eighth network function obtains second subscription information from the fourth network function;

[0800] The seventh network function obtains first session policy information from the tenth network function through the first session, wherein the first session is a session through which the eighth network function obtains second session policy information from the eleventh network function.

[0801] The information transmission device can be implemented as the seventh network function and / or the eighth network function, but is not limited thereto.

[0802] The information transmission device provided in the embodiments of the present disclosure obtains first subscription information from the ninth network function through a first session by the seventh network function, wherein the first session is a session through which the eighth network function obtains second subscription information from the fourth network function; and / or, the seventh network function obtains first session policy information from the tenth network function through the first session, wherein the first session is a session through which the eighth network function obtains second session policy information from the eleventh network function; the distributed SCU request centralized SCU selection and insertion of the centralized UPF can be supported, and the problem that the distributed deployment service cannot be accessed through the distributed SCU can be solved, thereby supporting avoiding the terminal access failure under the distributed autonomous architecture.

[0803] The first session policy information is generated by the tenth network function, and the second session policy information is generated by the eleventh network function.

[0804] In the embodiments of the present disclosure, the fourth network function is a unified data management (UDM), the seventh network function is a session management function (SMF), the eighth network function is an SMF, the ninth network function is a UDM, the tenth network function is a policy control function (PCF), and the eleventh network function is a PCF.

[0805] In the embodiments of the present disclosure, one or more of the following is a distributed network function, or at least one of the following is a network function of a distributed network, or at least one of the following is a network function of a distributed micro cloud unit: the seventh network function, the ninth network function, and the tenth network function; and / or, one or more of the following is a centralized network function, or at least one of the following is a network function of a centralized network, or at least one of the following is a network function of a centralized micro cloud unit: the fourth network function, the eighth network function, and the eleventh network function.

[0806] The related implementation embodiments of the information transmission method are applicable to the embodiments of the device, and the same technical effects can be achieved.

[0807] The embodiment of the present disclosure further provides a service request device, as shown in Fig. 23, a twelfth network function applied to a second network, the device comprising: a transceiver 231;

[0808] The transceiver 231 is configured to receive a fourth request message from a thirteenth network function of a third network;

[0809] The transceiver 231 is configured to send second information to the thirteenth network function, wherein the second information carries at least one of the following:

[0810] Indication information of a non-direct communication mode supporting proxy discovery;

[0811] Indication information of a non-direct communication mode not supporting proxy discovery;

[0812] Indication information of selecting a network function NF in a target domain;

[0813] Identification information of a candidate network function instance;

[0814] Information of a service communication proxy SCP in the target domain.

[0815] The information transmission device can be implemented as the twelfth network function, but is not limited thereto.

[0816] The information transmission device provided by the embodiment of the present disclosure receives a fourth request message from a thirteenth network function of a third network; and sends second information to the thirteenth network function, wherein the second information carries at least one of the following: indication information of a non-direct communication mode supporting proxy discovery; indication information of a non-direct communication mode not supporting proxy discovery; indication information of selecting a network function NF in a target domain; identification information of a candidate network function instance; information of a service communication proxy SCP in the target domain; and the information transmission device can support accurate service request and avoid terminal access failure in a distributed autonomous architecture.

[0817] The fourth request message is forwarded by the thirteenth network function according to a fifth request message of a network function service consumer, and the fifth request message is used by the network function service consumer to request to discover a target network function in the target domain; and the fifth request message carries at least one of the following: network function load requirement; network function selection mechanism; identification information of the second network; identification information of the third network; and NF type of the network function service consumer.

[0818] In the embodiments of the present disclosure, when the second information contains the indication information of the non-direct communication mode supporting non-proxy discovery, the indication information of selecting the NF in the target domain, and the identification information of the candidate network function instance, the thirteenth network function forwards the second information to the network function service consumer; and the network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function.

[0819] The fourteenth network function belongs to the third network, and the fourteenth network function is a service communication proxy SCP; the fifteenth network function belongs to the second network, and the fifteenth network function is a service communication proxy SCP; the network function service consumer communicates with the target network function through the fourteenth network function and the fifteenth network function, including: the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message being a request for the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message; wherein the sixth request message carries at least one of the following: network function load requirement; network function selection mechanism; identification information of the second network; identification information of the third network.

[0820] In the embodiments of the present disclosure, when the second information contains the indication information of the non-direct communication mode supporting non-proxy discovery and the indication information of selecting the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer; and the network function service consumer discovers and selects the target network function through a sixteenth network function.

[0821] The sixteenth network function belongs to the second network, and the sixteenth network function is a network repository function (NRF). The network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message is a request for the fourteenth network function to discover and select the target network function in the target domain, the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and forwards the sixth request message to the sixteenth network function, the sixteenth network function discovers and selects the target network function according to the sixth request message, and sends a second feedback message to the fifteenth network function, and the fifteenth network function communicates with the target network function according to the second feedback message, wherein the sixth request message carries at least one of the following: network function load requirement, network function selection mechanism, identification information of the second network, and identification information of the third network.

[0822] When the second information contains the indication information of the non-direct communication mode supported by the proxy discovery and the indication information of the selection of the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer, and the network function service consumer discovers and selects the target network function through the fifteenth network function.

[0823] The network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message is a request for the fourteenth network function to discover and select the target network function in the target domain, the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message, and the fifteenth network function communicates with the target network function, wherein the sixth request message carries at least one of the following: network function load requirement, network function selection mechanism, identification information of the second network, and identification information of the third network.

[0824] In the embodiments of the present disclosure, the second network is a remote public land mobile network, and / or the third network is a local public land mobile network, and / or the twelfth network function is a network repository function (NRF), and / or the thirteenth network function is a network repository function (NRF).

[0825] The implementation embodiments of the service request method are applicable to the embodiments of the device, and the same technical effects can be achieved.

[0826] It should be understood that the above-mentioned network functions can be mutually referred to each other, and the repeated parts will not be described herein.

[0827] The embodiments of the present disclosure further provide a communication device, comprising a memory, a processor and a program stored in the memory and executable on the processor; the processor implements the information transmission method when executing the program; or the processor implements the service request method when executing the program.

[0828] The implementation embodiments of the information transmission method or the service request method are applicable to the embodiments of the communication device, and the same technical effects can be achieved.

[0829] The embodiments of the present disclosure further provide a readable storage medium, which stores a program, the program is executed by a processor to implement the steps in the information transmission method; or the program is executed by a processor to implement the steps in the service request method.

[0830] The implementation embodiments of the information transmission method or the service request method are applicable to the embodiments of the readable storage medium, and the same technical effects can be achieved.

[0831] The embodiments of the present disclosure further provide a computer program product, comprising computer instructions, the computer instructions are executed by a processor to implement each process of the method embodiments of the information transmission method, and the same technical effects can be achieved, to avoid repetition, which will not be described herein; or the computer instructions are executed by a processor to implement each process of the method embodiments of the service request method, and the same technical effects can be achieved, to avoid repetition, which will not be described herein.

[0832] It should be noted that many of the functional units described in this specification are referred to as modules to more particularly emphasize their implementation independence.

[0833] In the embodiments of the present disclosure, the modules can be implemented in software, so as to be executed by various types of processors. For example, an identified executable code module can include one or more physical or logical blocks of computer instructions, for example, which can be constructed as objects, processes or functions. However, the executable code of the identified module does not need to be physically located together, but can include different instructions stored in different bits, which are logically combined together to form a module and achieve the specified purpose of the module.

[0834] Indeed, a module of executable code can be a single instruction, or many instructions, and can even be distributed over several different code segments, among different programs, and across several memory devices. Similarly, operational data can be identified and illustrated herein within modules, and can be embodied in any suitable form and organized within any suitable type of data structure. The operational data can be collected as a single data set, or can be distributed over different locations including over different storage devices, and can exist, at least partially, merely as electronic signals on a system or network.

[0835] Where a module can be implemented in software, the module can be stored in and / or transmitted over as one or more modules in any suitable type of computer-readable medium or memory medium, including random access memory (RAM), read-only memory (ROM), magnetic discs, optical discs, hard drives, floppy disks, flash memory, or any other suitable type of computer-readable medium or memory medium. Accordingly, various proprietary and non-proprietary computer system architectures and configurations can be used to implement the modules.

[0836] The foregoing is considered as illustrative only of the principles of the disclosure. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the disclosure to the exact construction and practice described. Accordingly, all such variations are intended to be included within the scope of the present disclosure.

Claims

An information transmission method, comprising: a first network function sending a first request to a second network function; wherein the first request is used to request at least one of the following: authentication of a terminal or a first terminal identifier of the terminal; address information of a third network function and / or a fourth network function; subscription information of the terminal; context information of the terminal. The information transmission method according to claim 1, wherein The first request comprises the first terminal identifier of the terminal. The information transmission method according to claim 1, further comprising: the first network function receiving first information sent by the second network function; the first information comprises at least one of the following: a second terminal identifier, the second terminal identifier being related to the first terminal identifier; address information of the third network function; address information of the fourth network function; subscription information of the terminal; context information of the terminal. The information transmission method according to claim 1, wherein The first network function sending a first request to a second network function, comprising: the first network function sending the first request to the second network function according to that the first network function is unable to select a fifth network function and / or a sixth network function; or, the first network function sending the first request to the second network function when the first network function is unable to select the fifth network function and / or the sixth network function. The information transmission method according to claim 3, further comprising: the first network function sending a second request to the second network function, the second request carrying the second terminal identifier, the second request being used to request to obtain context of the terminal and / or subscription information of the terminal; the first network function receiving context of the terminal and / or subscription information of the terminal sent by the second network function. The information transmission method according to claim 5, wherein The first network function sending a second request to the second network function, comprising: the first network function sending the second request to the second network function according to that the first network function is unable to select the sixth network function; or, the first network function sending the second request to the second network function when the first network function is unable to select the sixth network function. The information transmission method according to claim 3, further comprising: the first network function requesting the third network function and / or the fourth network function to perform authentication; and / or, the first network function performing authentication with the third network function and / or the fourth network function. The information transmission method according to claim 7, further comprising: the first network function receiving context of the terminal and / or subscription information of the terminal sent by the fourth network function. An information transmission method, comprising: a second network function receiving a first request sent by a first network function; wherein the first request is used to request at least one of the following: authentication of a terminal or a first terminal identifier of the terminal; address information of a third network function and / or a fourth network function; subscription information of the terminal; context information of the terminal. The information transmission method according to claim 9, wherein The first request comprises the first terminal identifier of the terminal. The information transmission method according to claim 9, further comprising: the second network function sending first information to the first network function; the first information comprises at least one of the following: a second terminal identifier, the second terminal identifier being related to the first terminal identifier; address information of the third network function; address information of the fourth network function; subscription information of the terminal; context information of the terminal. The information transmission method according to claim 11, further comprising: receiving, by the second network function, a second request sent by the first network function, the second request carrying the second terminal identifier, the second request being used for requesting to obtain the context of the terminal and / or the subscription information of the terminal; sending, by the second network function, the context of the terminal and / or the subscription information of the terminal to the first network function. An information transmission method, the method comprising: sending, by a seventh network function, a third request to an eighth network function, the third request comprising a data network name DNN. The information transmission method according to claim 13, wherein The seventh network function sends a third request to an eighth network function, comprising: The seventh network function sends a third request to the eighth network function when the first network or the first network function set does not support the DNN, or when the seventh network function does not support the DNN; and / or, The seventh network function sends the third request to the eighth network function according to that the first network or the first network function set does not support the DNN, and / or, the seventh network function does not support the DNN; and / or, The seventh network function sends the third request to the eighth network function when the first network or the first network function set does not support the DNN, and / or, when the seventh network function does not support the DNN. An information transmission method, comprising: receiving, by an eighth network function, a third request sent by a seventh network function, the third request comprising a DNN. An information transmission method, the method comprising at least one of the following: The seventh network function obtains the first subscription information from the ninth network function through the first session, wherein The first session is a session through which the eighth network function obtains second subscription information from a fourth network function; obtaining, by a seventh network function, first session policy information from a tenth network function through the first session, wherein the first session is a session through which the eighth network function obtains second session policy information from an eleventh network function. The information transmission method according to claim 16, wherein The first session policy information is generated by the tenth network function, and the second session policy information is generated by the eleventh network function. A service request method applied to a twelfth network function of a second network, the method comprising: receiving a fourth request message from a thirteenth network function of a third network; sending, to the thirteenth network function, second information, the second information carrying at least one of the following: indication information of a non-direct communication mode supporting proxy discovery; indication information of a non-direct communication mode not supporting proxy discovery; indication information of selecting a network function NF in a target domain; identification information of a candidate network function instance; information of a service communication proxy SCP in the target domain. The method according to claim 18, wherein, The fourth request message is forwarded by the thirteenth network function according to a fifth request message of a network function service consumer, and the fifth request message is used by the network function service consumer to request discovery of a target network function in the target domain; The fifth request message carries at least one of the following: Network function load requirements; Network function selection mechanism; Identity information of the second network; Identity information of the third network; NF type of the network function service consumer. According to the method of claim 19, wherein When the second information contains indication information of a non-direct communication mode supporting non-proxy discovery, indication information of selecting an NF in a target domain, and identity information of a candidate network function instance, the thirteenth network function forwards the second information to the network function service consumer; The network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function. According to the method of claim 20, wherein The fourteenth network function belongs to the third network, and the fourteenth network function is a service communication proxy SCP; The fifteenth network function belongs to the second network, and the fifteenth network function is a service communication proxy SCP; The network function service consumer communicates with the target network function through a fourteenth network function and a fifteenth network function, including that the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message is used to request the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message; The sixth request message carries at least one of the following: Network function load requirements; Network function selection mechanism; Identity information of the second network; Identity information of the third network. According to the method of claim 19, wherein When the second information contains indication information of the non-direct communication mode supporting non-proxy discovery and indication information of selecting an NF in a target domain, the thirteenth network function forwards the second information to the network function service consumer; The network function service consumer discovers and selects the target network function through a sixteenth network function. According to the method of claim 22, wherein The sixteenth network function belongs to the second network, and the sixteenth network function is a network repository function NRF; The network function service consumer discovers and selects the target network function through a sixteenth network function, including that the network function service consumer sends a sixth request message to the fourteenth network function, the sixth request message is used to request the fourteenth network function to discover and select the target network function in the target domain; the fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and forwards the sixth request message to the sixteenth network function; The sixteenth network function discovers and selects the target network function according to the sixth request message, and sends a second feedback message to the fifteenth network function; The fifteenth network function communicates with the target network function according to the second feedback message; The sixth request message carries at least one of the following: Network function load requirement; Network function selection mechanism; Identification information of the second network; Identification information of the third network. According to claim 19, wherein, When the second information contains the indication information of the non-direct communication mode supported by the proxy discovery and the indication information of selecting the NF in the target domain, the thirteenth network function forwards the second information to the network function service consumer; The network function service consumer discovers and selects the target network function through the fifteenth network function. The method of claim 24, wherein, The network function service consumer discovers and selects the target network function through the fifteenth network function, comprising: The network function service consumer sends a sixth request message to the fourteenth network function, and the sixth request message is a request for the fourteenth network function to discover and select the target network function in the target domain; The fifteenth network function receives the sixth request message forwarded by the fourteenth network function, and discovers and selects the target network function according to the sixth request message; The fifteenth network function communicates with the target network function; The sixth request message carries at least one of the following: Network function load requirement; Network function selection mechanism; Identification information of the second network; Identification information of the third network. According to claim 18, wherein, The second network is a remote public land mobile network; and / or, The third network is a local public land mobile network; and / or, The twelfth network function is a network repository function (NRF); and / or, The thirteenth network function is a network repository function (NRF). An information transmission device, comprising: A first sending module for a first network function to send a first request to a second network function; Or, a fourth receiving module for the second network function to receive the first request sent by the first network function; Or, a fifth sending module for a seventh network function to send a third request to an eighth network function, the third request including a data network name (DNN); Or, a sixth receiving module for the eighth network function to receive the third request sent by the seventh network function, the third request including a DNN; Or, the device is used for at least one of the following: The seventh network function obtains first subscription information from a ninth network function through a first session, wherein the first session is a session through which the eighth network function obtains second subscription information from a fourth network function; The seventh network function obtains first session policy information from a tenth network function through the first session, wherein the first session is a session through which the eighth network function obtains second session policy information from an eleventh network function; The first request is used to request at least one of the following: Authentication of a terminal or a first terminal identifier of the terminal; obtain address information of the third network function and / or the fourth network function; subscription information of the terminal; context information of the terminal. A service request apparatus applied to a twelfth network function of a second network, the apparatus comprising: a seventh receiving module configured to receive a fourth request message from a thirteenth network function of a third network; a sixth sending module configured to send second information to the thirteenth network function, the second information carrying at least one of the following: indication information of a non-direct communication mode supporting proxy discovery; indication information of a non-direct communication mode not supporting proxy discovery; indication information of selecting a network function NF in a target domain; identification information of a candidate network function instance; information of a service communication proxy SCP in the target domain. An information transmission device comprising: a transceiver; the transceiver is configured to send, by a first network function, a first request to a second network function; or, the transceiver is configured to receive, by a second network function, the first request sent by a first network function; or, the transceiver is configured to send, by a seventh network function, a third request to an eighth network function, the third request comprising a data network name DNN; or, the transceiver is configured to receive, by an eighth network function, the third request sent by a seventh network function, the third request comprising a DNN; or, the transceiver is configured to perform at least one of the following: obtain, by a seventh network function, first subscription information from a ninth network function through a first session, wherein the first session is a session through which a second subscription information is obtained by an eighth network function from a fourth network function; obtain, by a seventh network function, first session policy information from a tenth network function through the first session, wherein the first session is a session through which a second session policy information is obtained by an eighth network function from an eleventh network function; wherein the first request is configured to request at least one of the following: authenticate a terminal or a first terminal identifier of the terminal; obtain address information of the third network function and / or the fourth network function; subscription information of the terminal; context information of the terminal. A service request device, applied to a twelfth network function of a second network, the device comprising: a transceiver; the transceiver is configured to receive a fourth request message from a thirteenth network function of a third network; send second information to the thirteenth network function, the second information carrying at least one of the following: indication information of a non-direct communication mode supporting proxy discovery; indication information of a non-direct communication mode not supporting proxy discovery; indication information of selecting a network function NF in a target domain; identification information of a candidate network function instance; information of a service communication proxy SCP in the target domain. A communication device comprising a memory, a processor, and a program stored on the memory and executable on the processor; wherein, the processor implements the information transmission method according to any one of claims 1 to 17 when executing the program; or the processor implements the service request method according to any one of claims 18 to 26 when executing the program. A readable storage medium having a program stored thereon, wherein, the program, when executed by the processor, implements the steps in the information transmission method according to any one of claims 1 to 17; or the program, when executed by the processor, implements the steps in the service request method according to any one of claims 18 to 26. A computer program product comprising computer instructions which, when executed by a processor, implement the steps of the information transmission method according to any one of claims 1 to 17; or, which, when executed by a processor, implement the steps of the service request method according to any one of claims 18 to 26.

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