Communication method, communication device, communication system and storage medium

Abstract

The invention relates to a communication method, communication equipment, a communication system and a storage medium. The communication method comprises: during execution of an attachment process of a terminal, a first message is sent to a second core network device, the first message is used for determining an authorization result of the terminal on a store-and-forward service operation, and the attachment process of the terminal is an attachment process under the store-and-forward service operation. According to the invention, the Samp can be executed when the terminal is authorized; and F, under the condition of service operation, continuing the attachment process. The Samp is executed when the terminal is not authorized; and F, stopping the attachment process only when the service operation is carried out. Satellite resources can be prevented from being wasted as much as possible.

Description

Communication method, communication device, communication system, and storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method, a communication device, a communication system and a storage medium. BACKGROUND

[0002] Currently, both "transparent satellite payload" and "regenerative satellite payload" can be used for satellite communication.

[0003] In the "regenerative satellite payload" scenario, the satellite supports all radio network layer protocols, so that a signal received from the ground can be regenerated. The satellite can store and forward information, and the satellite can communicate with adjacent satellites through an intersatellite link (ISL). This mode of communication can also be referred to as a store & forward (S&F) service operation.

[0004] SUMMARY

[0005] In the execution of the service forwarding operation, if the authorization of the terminal to the store & forward operation is not determined, satellite resources will be wasted.

[0006] Embodiments of the present disclosure provide a communication method, a communication device, a communication system and a storage medium.

[0007] According to a first aspect of embodiments of the present disclosure, a communication method is provided, and the method comprises: during an attachment process of a terminal, sending a first message to a second core network device, the first message being used to determine an authorization result of the terminal to a store & forward service operation, the attachment process of the terminal being an attachment process under the store & forward service operation.

[0008] According to a second aspect of embodiments of the present disclosure, a communication method is provided, and the method comprises: receiving a first message sent by a first core network device, the first message being used to determine an authorization result of the terminal to a store & forward service operation, the first message being sent by the first core network device during an attachment process of a terminal, the attachment process of the terminal being an attachment process under the store & forward service operation.

[0009] According to a third aspect of the embodiments of the present disclosure, a communication method is provided. The method comprises: forwarding a third message sent by a first core network device during an attachment procedure of a terminal, the third message being used to indicate terminal identity authentication information for the terminal to continue the attachment procedure; or forwarding a fourth message sent by the first core network device, the fourth message being used to indicate that the first core network device rejects the attachment of the terminal; wherein the attachment procedure of the terminal is an attachment procedure under a store-and-forward service operation; and wherein the third message or the fourth message is determined by the first core network device based on an authorization result of the terminal on the store-and-forward service operation.

[0010] According to a fourth aspect of the embodiments of the present disclosure, a communication method is provided. The method comprises: receiving a third message forwarded by an access network device during an attachment procedure of a terminal, the third message being used to indicate terminal identity authentication information for the terminal to continue the attachment procedure; or receiving a fourth message forwarded by the access network device, the fourth message being used to indicate that the first core network device rejects the attachment of the terminal; wherein the third message or the fourth message is determined by the first core network device based on an authorization result of the terminal on a store-and-forward service operation; and wherein the attachment procedure of the terminal is an attachment procedure under the store-and-forward service operation.

[0011] According to a fifth aspect of the embodiments of the present disclosure, a communication method is provided. The method comprises: a first core network device sending a first message to a second core network device during an attachment procedure of a terminal, the first message being used to determine an authorization result of the terminal on a store-and-forward service operation, the attachment procedure of the terminal being an attachment procedure under the store-and-forward service operation; the second core network device receiving the first message sent by the first core network device; the authorization result being used for the first core network device to send a third message or a fourth message to the terminal; an access network device forwarding the third message or the fourth message sent by the first core network device; the terminal receiving the third message or the fourth message forwarded by the access network device; wherein the third message is used to indicate terminal identity authentication information for the terminal to continue the attachment procedure; and wherein the fourth message is used to indicate that the first core network device rejects the attachment of the terminal.

[0012] According to a sixth aspect of the embodiments of the present disclosure, a core network device is provided. The core network device comprises: a transceiver module, configured to send a first message to a second core network device during an attachment procedure of a terminal, the first message being used to determine an authorization result of the terminal on a store-and-forward service operation, the attachment procedure of the terminal being an attachment procedure under the store-and-forward service operation.

[0013] According to a seventh aspect of embodiments of the present disclosure, a core network device is provided, comprising: a transceiver configured to receive a first message sent by a first core network device, the first message being used to determine an authorization result of the terminal to a store-and-forward service operation, the first message being sent by the first core network device during an attachment procedure of the terminal, the attachment procedure of the terminal being an attachment procedure under the store-and-forward service operation.

[0014] According to an eighth aspect of embodiments of the present disclosure, an access network device is provided, comprising: a transceiver configured to forward, during an attachment procedure of a terminal, a third message sent by a first core network device, the third message being used to indicate terminal identity authentication information used by the terminal to continue the attachment procedure; or forward a fourth message sent by the first core network device, the fourth message being used to indicate that the first core network device rejects the attachment of the terminal; wherein the attachment procedure of the terminal is an attachment procedure under a store-and-forward service operation; wherein the third message or the fourth message is determined by the first core network device based on an authorization result of the terminal to the store-and-forward service operation.

[0015] According to a ninth aspect of embodiments of the present disclosure, a terminal is provided, comprising: a transceiver configured to receive, during an attachment procedure of the terminal, a third message forwarded by an access network device, the third message being used to indicate terminal identity authentication information used by the terminal to continue the attachment procedure; or receive a fourth message forwarded by the access network device, the fourth message being used to indicate that the first core network device rejects the attachment of the terminal; wherein the third message or the fourth message is determined by the first core network device based on an authorization result of the terminal to the store-and-forward service operation; wherein the attachment procedure of the terminal is an attachment procedure under a store-and-forward service operation.

[0016] According to a tenth aspect of embodiments of the present disclosure, a core network device is provided, comprising: one or more processors; wherein the processor is configured to execute the first aspect and any one of the communication methods in the first aspect.

[0017] According to an eleventh aspect of embodiments of the present disclosure, a core network device is provided, comprising: one or more processors; wherein the processor is configured to execute the second aspect and any one of the communication methods in the second aspect.

[0018] According to a twelfth aspect of embodiments of the present disclosure, an access network device is provided, comprising: one or more processors; wherein the processor is configured to execute the third aspect and any one of the communication methods in the third aspect.

[0019] According to a thirteenth aspect of embodiments of the present disclosure, a terminal is provided, comprising: one or more processors; wherein the processor is configured to execute the fourth aspect and any one of the communication methods in the fourth aspect.

[0020] According to a fourteenth aspect of the embodiments of the present disclosure, a communication system is provided, comprising a first core network device, a second core network device, an access network device, and a terminal, wherein the first core network device is configured to implement the communication method of the first aspect and any one of the first aspect, the second core network device is configured to implement the communication method of the second aspect and any one of the second aspect, the access network device is configured to implement the communication method of the third aspect and any one of the third aspect, and the terminal is configured to implement the communication method of the fourth aspect and any one of the fourth aspect.

[0021] According to a fifteenth aspect of the embodiments of the present disclosure, a storage medium is provided, which stores instructions, when the instructions are executed on a communication device, causing the communication device to perform the communication method of the first aspect and any one of the first aspect, or the second aspect and any one of the second aspect, or the third aspect and any one of the third aspect, or the fourth aspect and any one of the fourth aspect.

[0022] According to a sixteenth aspect of the embodiments of the present disclosure, a program product is provided, comprising a computer program, when the computer program is executed by a communication device, causing the communication device to perform the method described in the first aspect and any one of the first aspect, or the second aspect and any one of the second aspect, or the third aspect and any one of the third aspect, or the fourth aspect and any one of the fourth aspect.

[0023] The present disclosure determines the authorization result of the terminal to the S&F service operation by sending a first message from the first core network device to the second core network device during the attachment process of the terminal under the execution of the store-and-forward operation. That is, the attachment process can continue in the case that the terminal is authorized to perform the S&F service operation. In the case that the terminal is not authorized to perform the S&F service operation, the attachment process is stopped. The satellite resources can be avoided from being wasted as much as possible. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following describes the drawings required for the embodiments, and the following drawings are only some embodiments of the present disclosure, and do not specifically limit the protection scope of the present disclosure.

[0025] FIG. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present disclosure.

[0026] FIG. 2a is a schematic diagram of a communication method interaction according to an embodiment of the present disclosure.

[0027] FIG. 2b is a schematic diagram of a communication method interaction according to an embodiment of the present disclosure.

[0028] FIG. 3a is a flowchart of a communication method according to an embodiment of the present disclosure.

[0029] FIG. 3b is a flow chart of a communication method according to an embodiment of the present disclosure.

[0030] FIG. 3c is a flow chart of a communication method according to an embodiment of the present disclosure.

[0031] FIG. 4a is a flow chart of a communication method according to an embodiment of the present disclosure.

[0032] FIG. 4b is a flow chart of a communication method according to an embodiment of the present disclosure.

[0033] FIG. 4c is a flow chart of a communication method according to an embodiment of the present disclosure.

[0034] FIG. 5 is a flow chart of a communication method according to an embodiment of the present disclosure.

[0035] FIG. 6a is a flow chart of a communication method according to an embodiment of the present disclosure.

[0036] FIG. 6b is a flow chart of a communication method according to an embodiment of the present disclosure.

[0037] FIG. 7 is an interaction diagram of a communication method according to an embodiment of the present disclosure.

[0038] FIG. 8 is an interaction diagram of a communication method according to an embodiment of the present disclosure.

[0039] FIG. 9 is a structural diagram of a first core network device according to an embodiment of the present disclosure.

[0040] FIG. 10 is a structural diagram of a second core network device according to an embodiment of the present disclosure.

[0041] FIG. 11 is a structural diagram of an access network device according to an embodiment of the present disclosure.

[0042] FIG. 12 is a structural diagram of a terminal according to an embodiment of the present disclosure.

[0043] FIG. 13 is a structural diagram of a communication device according to an embodiment of the present disclosure.

[0044] FIG. 14 is a structural diagram of a chip according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0045] The present disclosure provides a communication method, a communication device, a communication system and a storage medium.

[0046] In a first aspect, the present disclosure provides a communication method, comprising: sending, to a second core network device, a first message during an attachment procedure of a terminal, the first message being used to determine an authorization result of the terminal to a store-and-forward service operation, the attachment procedure of the terminal being an attachment procedure under the store-and-forward service operation.

[0047] In the above embodiment, by sending the first message from the first core network device to the second core network device during the attachment procedure of the terminal under the execution of the store-and-forward operation, the authorization result of the terminal to the S&F service operation is determined. That is, it is determined that the attachment procedure is continued in the case that the terminal is authorized to execute the S&F service operation. In the case that the terminal is not authorized to execute the S&F service operation, the attachment procedure is stopped. The satellite resources can be avoided to be wasted as much as possible.

[0048] In some optional embodiments of the first aspect, the sending of the first message to the second core network device comprises: sending the first message before sending a second message to the second core network device, the second message being used to indicate terminal identity authentication information returned for continuing the attachment procedure.

[0049] In the above embodiment, the first message can be sent before the second message, that is, the authorization of the terminal to execute the store-and-forward service operation is determined before the identity authentication is performed. In order to save resources and improve efficiency, the identity authentication can not be performed when the terminal is not authorized to execute the store-and-forward service operation.

[0050] In some optional embodiments of the first aspect, the method further comprises: receiving terminal subscription information sent by the second core network device, and determining the authorization result of the terminal to the store-and-forward service operation based on the terminal subscription information; or, receiving the authorization result sent by the second core network device.

[0051] In the above embodiment, the first core network device can receive the terminal subscription information to determine the authorization result of the terminal by itself, or can directly receive the authorization result. Different situations can be adapted to, and the strategy can be flexibly changed.

[0052] In some optional embodiments of the first aspect, the method further comprises: in response to the terminal being authorized to execute the store-and-forward service operation, sending the second message to the second core network device; receiving identity authentication information sent by the second core network device, and continuing the attachment procedure of the terminal; or, in response to the terminal not being authorized to execute the store-and-forward service operation, stopping the attachment procedure of the terminal.

[0053] In the above embodiment, when the terminal is authorized to execute the store-and-forward service operation, the first core network device can send the second message to continue the attachment procedure, and when the terminal is not authorized to execute the store-and-forward service operation, the attachment procedure can be stopped. That is, the second message can not be sent, and the process of identity authentication is saved, and resources are saved.

[0054] In some optional embodiments of the first aspect, the first message is further used to indicate terminal identity authentication information returned by the second core network device for continuing the attachment procedure.

[0055] In the above embodiment, the first message can also be used to indicate the return of terminal identity authentication information, that is, to assume the role of the second message, both to determine the terminal authorization result and to indicate the return of terminal identity authentication information, so as to save signaling consumption.

[0056] In some optional embodiments of the first aspect, the method further comprises: receiving terminal identity authentication information and terminal subscription information sent by the second core network device; wherein the terminal subscription information is used to determine the authorization result of the terminal to the store-and-forward service operation; and determining the authorization result of the terminal to the execution of the store-and-forward service operation based on the terminal subscription information.

[0057] In the above embodiment, the second core network device can return the identity authentication information and the terminal subscription information, so that the first core network device determines the authorization result of the terminal by itself, or directly receives the authorization result. This can adapt to different situations and flexibly change strategies.

[0058] In some optional embodiments of the first aspect, the method further comprises: in response to the terminal being authorized to perform the store-and-forward service operation, continuing the attachment process of the terminal based on the terminal identity authentication information; or, in response to the terminal not being authorized to perform the store-and-forward service operation, stopping the attachment process of the terminal.

[0059] In the above embodiment, if the terminal is authorized to perform the store-and-forward service operation, the attachment process can be continued directly based on the terminal identity authentication information, thereby improving efficiency. If the terminal is not authorized to perform the store-and-forward service operation, the attachment process can be stopped.

[0060] In some optional embodiments of the first aspect, the method further comprises: receiving terminal identity authentication information and / or the authorization result of the terminal to the store-and-forward service operation sent by the second core network device.

[0061] In the above embodiment, the identity authentication information and / or the authorization result can be received, that is, the authorization result is determined by the second core network device. When it is determined that the terminal is not authorized to perform the store-and-forward service operation, the identity authentication information can not be sent, thereby saving resources.

[0062] In some optional embodiments of the first aspect, the method further comprises: in response to receiving the identity authentication information and the authorization result sent by the second core network device, and the authorization result indicating that the terminal is authorized to perform the store-and-forward service operation, continuing the attachment process of the terminal based on the identity authentication information; or, in response to receiving the authorization result sent by the second core network device, and the authorization result indicating that the terminal is not authorized to perform the store-and-forward service operation, stopping the attachment process of the terminal.

[0063] In the above embodiments, the identity authentication information and the authorization result can be sent when the terminal is authorized to perform the store-and-forward service operation, so that the first core network device can continue the attachment process based on the identity authentication information and the authorization result. The authorization result can be sent without sending the identity authentication information when the terminal is not authorized to perform the store-and-forward service operation, so as to save resources.

[0064] In some optional embodiments of the first aspect, the continuing the attachment process of the terminal comprises: sending, to the terminal, a third message, the third message being used to instruct the terminal to return terminal identity authentication information for continuing the attachment process; or the stopping the attachment process of the terminal comprises: sending, to the terminal, a fourth message, the fourth message being used to instruct the first core network device to reject the attachment of the terminal.

[0065] In the above embodiments, the first core network device can continue the attachment process by sending a third message to the terminal, and can stop the attachment process by sending a fourth message to the terminal, so as to improve communication efficiency and save resources.

[0066] In the second aspect, a communication method is provided, the method comprising: receiving a first message sent by a first core network device, the first message being used to determine an authorization result of a terminal to a store-and-forward service operation, the first message being sent by the first core network device during an attachment process of the terminal, the attachment process of the terminal being an attachment process under the store-and-forward service operation.

[0067] In some optional embodiments of the second aspect, the receiving the first message sent by the first core network device comprises: receiving the first message before receiving a second message sent by the first core network device, the second message being used to instruct a second core network device to return terminal identity authentication information for continuing the attachment process.

[0068] In some optional embodiments of the second aspect, the method further comprises: sending terminal subscription information to the first core network device.

[0069] In some optional embodiments of the second aspect, the method further comprises: receiving the second message sent by the first core network device, the second message being sent by the first core network device in response to the terminal being authorized to perform the store-and-forward service operation; and sending identity authentication information to the first core network device.

[0070] In some optional embodiments of the second aspect, the first message is further used to instruct a second core network device to return terminal identity authentication information for continuing the attachment process.

[0071] In some embodiments of the second aspect, the method further comprises: sending, to the first core network device, terminal identity authentication information and terminal subscription information; and the terminal subscription information is used by the first core network device to determine an authorization result of the terminal for performing the store-and-forward service operation based on the terminal subscription information.

[0072] In some embodiments of the second aspect, the method further comprises: determining an authorization result of the terminal for the store-and-forward service operation based on terminal subscription information; and sending the authorization result and / or terminal identity authentication information to the first core network device.

[0073] In some embodiments of the second aspect, the sending of the authorization result and / or terminal identity authentication information to the first core network device comprises: in response to the terminal being authorized to perform the store-and-forward service operation, sending the authorization result and the terminal identity authentication information to the first core network device; or, in response to the terminal not being authorized to perform the store-and-forward service operation, sending the authorization result to the first core network device to stop the attachment process.

[0074] In a third aspect, a communication method is provided, the method comprising: during an attachment process of a terminal, forwarding a third message sent by a first core network device, the third message being used to indicate terminal identity authentication information for the terminal to return to continue the attachment process; or forwarding a fourth message sent by the first core network device, the fourth message being used to indicate that the first core network device rejects the attachment of the terminal; wherein the attachment process of the terminal is an attachment process under a store-and-forward service operation; and wherein the third message or the fourth message is determined by the first core network device based on an authorization result of the terminal for the store-and-forward service operation.

[0075] In some embodiments of the third aspect, the third message is sent by the first core network device in response to the terminal being authorized to perform the store-and-forward service operation; and the fourth message is sent by the first core network device in response to the terminal not being authorized to perform the store-and-forward service operation.

[0076] In a fourth aspect, a communication method is provided, the method comprising: during an attachment process of a terminal, receiving a third message forwarded by an access network device, the third message being used to indicate terminal identity authentication information for the terminal to return to continue the attachment process; or receiving a fourth message forwarded by the access network device, the fourth message being used to indicate that the first core network device rejects the attachment of the terminal; wherein the third message or the fourth message is determined by the first core network device based on an authorization result of the terminal for the store-and-forward service operation; and wherein the attachment process of the terminal is an attachment process under a store-and-forward service operation.

[0077] In some optional embodiments of the fourth aspect, the third message forwarded by the receiving access network device comprises: terminal identity authentication information for returning to continue the attachment procedure, so as to continue the attachment procedure; and the fourth message forwarded by the receiving access network device comprises: stopping the attachment procedure.

[0078] In a fifth aspect, a communication method is provided, which comprises: a first core network device sending a first message to a second core network device during an attachment procedure of a terminal, the first message being used to determine an authorization result of the terminal for a store-and-forward service operation, the attachment procedure of the terminal being an attachment procedure under the store-and-forward service operation; the second core network device receiving the first message sent by the first core network device; the authorization result being used for the first core network device to send a third message or a fourth message to the terminal; an access network device forwarding the third message or the fourth message sent by the first core network device; the terminal receiving the third message or the fourth message forwarded by the access network device; wherein the third message is used to instruct the terminal to return terminal identity authentication information for continuing the attachment procedure; and the fourth message is used to instruct the first core network device to reject the attachment of the terminal.

[0079] In a sixth aspect, a core network device is provided, which comprises: a transceiver module configured to send a first message to a second core network device during an attachment procedure of a terminal, the first message being used to determine an authorization result of the terminal for a store-and-forward service operation, the attachment procedure of the terminal being an attachment procedure under the store-and-forward service operation.

[0080] In some optional embodiments of the sixth aspect, the transceiver module is configured to send the first message to the second core network device in the following manner: the first message is sent before a second message is sent to the second core network device, the second message being used to instruct terminal identity authentication information for continuing the attachment procedure.

[0081] In some optional embodiments of the sixth aspect, the transceiver module is further configured to receive terminal subscription information sent by the second core network device, and the first core network device further comprises a processing module configured to determine the authorization result of the terminal for the store-and-forward service operation based on the terminal subscription information; or the transceiver module is further configured to receive the authorization result sent by the second core network device.

[0082] In some optional embodiments of the sixth aspect, the transceiver module is further configured to: in response to the terminal being authorized to perform the store-and-forward service operation, send the second message to the second core network device; receive the identity authentication information sent by the second core network device, and continue the attachment procedure of the terminal; or in response to the terminal not being authorized to perform the store-and-forward service operation, stop the attachment procedure of the terminal.

[0083] In some possible embodiments of the sixth aspect, the first message is further used to instruct the second core network device to return terminal identity authentication information for continuing the attachment procedure.

[0084] In some possible embodiments of the sixth aspect, the transceiver is further configured to: receive terminal identity authentication information and terminal subscription information sent by the second core network device; wherein the terminal subscription information is used to determine the authorization result of the terminal for the store-and-forward service operation; and determine the authorization result of the terminal for performing the store-and-forward service operation based on the terminal subscription information.

[0085] In some possible embodiments of the sixth aspect, the transceiver is further configured to: in response to the terminal being authorized to perform the store-and-forward service operation, continue the attachment procedure of the terminal based on the terminal identity authentication information; or, in response to the terminal not being authorized to perform the store-and-forward service operation, stop the attachment procedure of the terminal.

[0086] In some possible embodiments of the sixth aspect, the transceiver is further configured to: receive terminal identity authentication information and / or the authorization result of the terminal for the store-and-forward service operation sent by the second core network device.

[0087] In some possible embodiments of the sixth aspect, the transceiver is further configured to: in response to receiving the identity authentication information and the authorization result sent by the second core network device, and the authorization result indicating that the terminal is authorized to perform the store-and-forward service operation, continue the attachment procedure of the terminal based on the identity authentication information; or, in response to receiving the authorization result sent by the second core network device, and the authorization result indicating that the terminal is not authorized to perform the store-and-forward service operation, stop the attachment procedure of the terminal.

[0088] In some possible embodiments of the sixth aspect, the continuing the attachment procedure of the terminal comprises: sending a third message to the terminal, the third message being used to instruct the terminal to return terminal identity authentication information for continuing the attachment procedure; or, the stopping the attachment procedure of the terminal comprises: sending a fourth message to the terminal, the fourth message being used to instruct the first core network device to reject the attachment of the terminal.

[0089] In a seventh aspect, a core network device is provided, comprising: a transceiver configured to receive a first message sent by a first core network device, the first message being used to determine an authorization result of a terminal for a store-and-forward service operation, the first message being sent by the first core network device during an attachment procedure of the terminal, the attachment procedure of the terminal being an attachment procedure under the store-and-forward service operation.

[0090] In some embodiments of the seventh aspect, the transceiver module is configured to receive the first message from the first core network device in the following manner: before receiving a second message from the first core network device, the second message being used to indicate terminal identity authentication information for the second core network device to return to continue the attach procedure; the terminal identity authentication information being used to perform identity authentication on the terminal.

[0091] In some embodiments of the seventh aspect, the transceiver module is further configured to send terminal subscription information to the first core network device.

[0092] In some embodiments of the seventh aspect, the transceiver module is further configured to receive the second message from the first core network device, the second message being sent by the first core network device in response to the terminal being authorized to perform the store-and-forward service operation; and send identity authentication information to the first core network device.

[0093] In some embodiments of the seventh aspect, the first message is further used to indicate terminal identity authentication information for the second core network device to return to continue the attach procedure.

[0094] In some embodiments of the seventh aspect, the transceiver module is further configured to send terminal identity authentication information and terminal subscription information to the first core network device; and the terminal subscription information is used by the first core network device to determine an authorization result of the terminal to perform the store-and-forward service operation based on the terminal subscription information.

[0095] In some embodiments of the seventh aspect, the second core network device further comprises a processing module configured to determine an authorization result of the terminal to perform the store-and-forward service operation based on terminal subscription information; and the transceiver module is further configured to send the authorization result and / or the terminal identity authentication information to the first core network device.

[0096] In some embodiments of the seventh aspect, the transceiver module is configured to send the authorization result and / or the terminal identity authentication information to the first core network device in the following manner: in response to the terminal being authorized to perform the store-and-forward service operation, the authorization result and the terminal identity authentication information are sent to the first core network device; or, in response to the terminal not being authorized to perform the store-and-forward service operation, the authorization result is sent to the first core network device to stop the attach procedure.

[0097] In an eighth aspect, an access network device is provided, comprising: a transceiver configured to forward, during an attachment procedure of a terminal, a third message sent by a first core network device, the third message being used to indicate terminal identity authentication information for the terminal to return to continue the attachment procedure; or forward a fourth message sent by the first core network device, the fourth message being used to indicate that the first core network device rejects the attachment of the terminal; wherein the attachment procedure of the terminal is an attachment procedure under a store-and-forward service operation; and wherein the third message or the fourth message is determined by the first core network device based on an authorization result of the terminal performing the store-and-forward service operation.

[0098] In some optional embodiments of the eighth aspect, the third message is sent by the first core network device in response to the terminal being authorized to perform the store-and-forward service operation; and the fourth message is sent by the first core network device in response to the terminal not being authorized to perform the store-and-forward service operation.

[0099] In a ninth aspect, a terminal is provided, comprising: a transceiver configured to receive, during an attachment procedure of the terminal, a third message forwarded by an access network device, the third message being used to indicate terminal identity authentication information for the terminal to return to continue the attachment procedure; or receive a fourth message forwarded by the access network device, the fourth message being used to indicate that the first core network device rejects the attachment of the terminal; wherein the third message or the fourth message is determined by the first core network device based on an authorization result of the terminal performing a store-and-forward service operation; and wherein the attachment procedure of the terminal is an attachment procedure under the store-and-forward service operation.

[0100] In some optional embodiments of the ninth aspect, the receiving the third message forwarded by the access network device comprises: returning the terminal identity authentication information for the terminal to continue the attachment procedure; and the receiving the fourth message forwarded by the access network device comprises: stopping the attachment procedure.

[0101] In a tenth aspect, a core network device is provided, comprising: one or more processors; wherein the processors are configured to perform the first aspect and any one of the communication methods in the first aspect.

[0102] In an eleventh aspect, a core network device is provided, comprising: one or more processors; wherein the processors are configured to perform the second aspect and any one of the communication methods in the second aspect.

[0103] In a twelfth aspect, an access network device is provided, comprising: one or more processors; wherein the processors are configured to perform the third aspect and any one of the communication methods in the third aspect.

[0104] In a thirteenth aspect, a terminal is provided, comprising: one or more processors; wherein the processor is configured to perform the communication method of the fourth aspect and any one of the fourth aspect.

[0105] In a fourteenth aspect, a communication system is provided, comprising a first core network device, a second core network device, an access network device, and a terminal, wherein the first core network device is configured to implement the communication method of the first aspect and any one of the first aspect, the second core network device is configured to implement the communication method of the second aspect and any one of the second aspect, the access network device is configured to implement the communication method of the third aspect and any one of the third aspect, and the terminal is configured to implement the communication method of the fourth aspect and any one of the fourth aspect.

[0106] In a fifteenth aspect, a storage medium is provided, which stores instructions, when the instructions are executed on a communication device, causing the communication device to perform the communication method of the first aspect and any one of the first aspect, or the second aspect and any one of the second aspect, or the third aspect and any one of the third aspect, or the fourth aspect and any one of the fourth aspect.

[0107] In a sixteenth aspect, a program product is provided, comprising a computer program, when the computer program is executed by a communication device, causing the communication device to perform the method described in the first aspect and any one of the first aspect, or the second aspect and any one of the second aspect, or the third aspect and any one of the third aspect, or the fourth aspect and any one of the fourth aspect.

[0108] In a seventeenth aspect, the embodiments of the present disclosure provide a chip or a chip system. The chip or the chip system comprises processing circuitry configured to perform the method described in the first aspect or the optional implementation of the second aspect.

[0109] It can be understood that the terminal, the access network device, the first network element, the other network element, the core network device, the communication system, the storage medium, the program product, the computer program, the chip or the chip system involved in the embodiments of the present disclosure are all used to execute the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved thereby can refer to the beneficial effects in the corresponding method, which will not be described here.

[0110] The embodiments of the present disclosure propose a communication method, a communication device, a communication system, and a storage medium. In some embodiments, the communication method and the information processing method, and the communication method and the like can be replaced with each other, the communication device and the information processing device, and the communication device and the like can be replaced with each other, and the information processing system and the communication system and the like can be replaced with each other.

[0111] The communication device involved in the present disclosure may, for example, comprise a first core network device, a second core network device, an access network device, a terminal, and the like.

[0112] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing part of the steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, part or all of the steps of different embodiments can be combined arbitrarily, an embodiment can be combined with the optional implementation of other embodiments arbitrarily.

[0113] In each embodiment of the present disclosure, the terms and / or descriptions between the embodiments have consistency if there is no special description and logical conflict, and can be referred to each other, and the technical environment in different embodiments can be combined to form a new embodiment according to the inherent logical relationship.

[0114] The terms used in the embodiments of the present disclosure are only for the purpose of describing the specific embodiments, and not as a limitation on the present disclosure.

[0115] In the embodiments of the present disclosure, unless otherwise specified, the elements expressed in singular form, such as "one", "a", "the", "above", "said", "preceding", "this" and the like, can represent "one and only one", and can also represent "one or more", "at least one" and the like. For example, in the case of using articles such as "a", "an", "the" and the like in English, the noun after the article can be understood as singular expression, and can also be understood as plural expression.

[0116] In the embodiments of the present disclosure, "a plurality of" means two or more.

[0117] In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple" and the like can be replaced with each other.

[0118] In some embodiments, the description of "at least one of A, B", "A and / or B", "in a case A, in another case B", "in response to a case A, in response to a case B", and the like, can include the following technical solutions according to the case: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, A and B are selected from A and B (A and B are selectively executed); in some embodiments, A and B (A and B are executed). When there are more branches such as A, B, C, and the like, the above is similar.

[0119] In some embodiments, the description of "A or B" and the like can include the following technical solutions according to the case: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, A and B are selected from A and B (A and B are selectively executed). When there are more branches such as A, B, C, and the like, the above is similar.

[0120] The prefix words "first", "second", and the like in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute a limitation on the position, order, priority, quantity, or content of the description objects. The description of the description objects should refer to the description in the context of the claims or embodiments, and should not constitute an additional limitation because of the use of the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified thereby are in the same message or not, nor limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and the types thereof can be the same or different; for another example, the description object is "information", and "first information" and "the performance of each AI model" can be the same information or different information, and the content thereof can be the same or different.

[0121] In some embodiments, "including A", "containing A", "for indicating A", "carrying A", can be interpreted as directly carrying A, or indirectly indicating A.

[0122] In some embodiments, the terms “in response to,” “in response to determining,” “in the event that,” “when,” “if,” “upon,” and the like can be replaced with each other.

[0123] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” “above,” and the like can be replaced with each other, and the terms “less than,” “less than or equal to,” “not greater than,” “fewer than,” “fewer than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” “below,” and the like can be replaced with each other.

[0124] In some embodiments, the apparatuses and devices can be interpreted as physical or virtual, and their names are not limited to the names described in the embodiments, and in some cases can also be understood as “equipment,” “device,” “circuit,” “network element,” “node,” “function,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” “subject,” and the like.

[0125] In some embodiments, “network” can be interpreted as an apparatus included in the network, such as an access network device, a core network device, and the like.

[0126] In some embodiments, an “access network device (AN device)” can also be referred to as a “radio access network device (RAN device),” a “base station (BS),” a “radio base station,” a “fixed station,” and in some embodiments can also be understood as a “node,” an “access point,” a “transmission point (TP),” a “reception point (RP),” a “transmission / reception point (TRP),” a “panel,” an “antenna panel,” an “antenna array,” a “cell,” a “macro cell,” a “small cell,” a “femto cell,” a “pico cell,” a “sector,” a “cell group,” a “serving cell,” a “carrier,” a “component carrier,” a “bandwidth part (BWP),” and the like.

[0127] In some embodiments, a "terminal" or "terminal device" can be referred to as a "user equipment" (UE), a "user terminal," a "mobile station" (MS), a "mobile terminal" (MT), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, etc.

[0128] In some embodiments, data, information, etc. can be obtained in compliance with laws and regulations of the country in which the location is situated.

[0129] In some embodiments, data, information, etc. can be obtained after obtaining consent from a user.

[0130] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0131] Currently, both "transparent satellite payloads" and "regenerative satellite payloads" can be used for satellite communications.

[0132] In the "regenerative satellite payload" scenario, the satellite supports all radio network layer protocols, so that signals received from the ground can be regenerated. The satellite can store and forward information, and the satellite can communicate with adjacent satellites through an intersatellite link (ISL). This mode of communication can also be referred to as a store & forward (S&F) service operation.

[0133] In store-and-forward service operation, the serving link between the UE and the satellite (SAT) and the feeder link between the SAT and the non-terrestrial network (NTN) gateway may not be available at the same time. If the serving link is available but the feeder link is not, the SAT can temporarily store uplink (UL) data from the UE. If the feeder link is available but the serving link is not, the SAT can temporarily store downlink (DL) UE data from the core network (CN).

[0134] However, if UE authorization is not confirmed before performing S&F service operations, SAT resources may be wasted. For example, SAT storage resources may be wasted. For another example, the network function on the SAT interacts with the network function on the ground to perform authentication and key agreement (AKA) for the UE. If the UE is not authorized, this operation is meaningless and wastes SAT resources.

[0135] Therefore, the present disclosure provides a communication method in which, during a terminal's attach process under store-and-forward operation, a first core network device sends a first message to a second core network device to determine the terminal's authorization for S&F service operations. Specifically, if the terminal is authorized to perform S&F service operations, the attach process can be continued. If the terminal is not authorized to perform S&F service operations, the attach process is terminated. This minimizes waste of satellite resources.

[0136] FIG1 is a schematic diagram showing a communication system architecture according to an embodiment of the present disclosure.

[0137] As shown in FIG1 , the communication system 100 includes a first core network device 101 , a second core network device 102 , an access network device 103 , and a terminal 104 .

[0138] In some embodiments, the first core network device 101 may be, for example, a mobility management entity (MME). The second core network device 102 may be, for example, a home subscriber server (HSS). The access network device 103 may be, for example, an evolved NodeB (eNB) in a 4G communication system. However, the specific device types described in this embodiment are merely exemplary and the present disclosure is not limited thereto.

[0139] In some embodiments, the access network device 103 can be deployed on a SAT, and the second core network device 102 can be deployed on a terrestrial network. The first core network device can be deployed on a SAT, or can be deployed on a terrestrial network, or can be partially deployed on a SAT and partially deployed on a terrestrial network. For example, when the functions of the first core network device are split for deployment, a non-terrestrial MME (NT) is deployed on a SAT, and a terrestrial MME (MME-T) is deployed on a terrestrial network.

[0140] In some embodiments, the terminal 104 includes at least one of a mobile phone, a wearable device, an Internet of Things device, a communication-capable car, a smart car, a tablet, a wireless transceiver-equipped computer, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, or the like, but is not limited thereto.

[0141] In some embodiments, the access network device 103, for example, is a node or device that accesses a terminal to a wireless network, and the access network device can include at least one of an evolved NodeB (eNB) in a 4G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

[0142] In some embodiments, the technical solutions of the present disclosure can be applicable to an Open RAN architecture, at this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be realized through software or programs.

[0143] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), wherein the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, and the functions of part of the protocol layers are controlled by the CU, and the functions of the remaining part or all of the protocol layers are distributed in the DU and controlled by the CU, but the present disclosure is not limited thereto.

[0144] In some embodiments, the core network device can be one device including one or more network elements, or can be multiple devices or device groups including all or part of the one or more network elements respectively. The network element can be virtual or physical. The core network includes at least one of an evolved packet core (EPC), a 5G core network (5GCN), a next generation core (NGC), for example.

[0145] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed in the embodiments of the present disclosure. Those skilled in the art can know that, as the system architecture evolves and new business scenarios appear, the technical solutions proposed in the embodiments of the present disclosure are also applicable to similar technical problems.

[0146] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1 or part of the subject, but are not limited thereto. The subjects shown in FIG. 1 are exemplary, and the communication system can include all or part of the subjects in FIG. 1, or other subjects other than FIG. 1. The number and form of each subject is arbitrary, each subject can be physical or virtual, the connection relationship between each subject is exemplary, each subject can not be connected or can be connected, the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0147] Embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based thereon, and the like. In addition, a plurality of systems can be combined (for example, combination of LTE or LTE-A and 5G, and the like).

[0148] FIG. 2a is a schematic diagram of an interaction of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2a, the embodiment of the present disclosure relates to a communication method for the communication system 100, and the above method comprises:

[0149] In step S2101, the terminal 104 sends an attach request.

[0150] In some embodiments, the first core network device 101 receives an attach request. The attach request is used to initiate an attach procedure, i.e., the terminal 104 can request to attach in the mobile communication system to which the first core network device 101 belongs. Wherein, the attach procedure is an attach procedure under store-and-forward operation.

[0151] In some embodiments, the terminal can forward the attach request through the access network device. That is, the terminal establishes a radio resource control (RRC) connection with the access network device, and after the RRC establishment is completed, the terminal sends an attach request to the access network device. If the first core network device is deployed in a ground network, and the feeder link between the access network device deployed on the SAT and the first core network device deployed in the ground network is unavailable, the access network device can temporarily store the attach request until the feeder link is available, and then forward the stored attach request to the first core network device. If the first core network device is deployed on the SAT, or partially deployed on the SAT, the access network device can forward the attach request to the first core network device, and the first core network device processes the attach request.

[0152] If the service link between the terminal and the access network device deployed on the SAT is about to be unavailable, the access network device can send an RRC connection release message to the terminal.

[0153] In some embodiments, the access network device can temporarily store the attach request message. The present disclosure does not limit the location of the first message storage.

[0154] Step S2102, the first core network device 101 sends a first message to the second core network device 102 during the execution of the attach procedure of the terminal, and the attach procedure of the terminal is an attach procedure under store-and-forward operation.

[0155] In some embodiments, the second core network device 102 receives the first message sent by the first core network device 101 during the attachment procedure of the terminal, the attachment procedure of the terminal is the attachment procedure under the store-and-forward operation. If the first core network device is deployed on the SAT, and the feeder link between the first core network device and the second core network device deployed in the ground network is unavailable, the first core network device can indicate to temporarily store the first message until the feeder link is available, and then send the stored first message to the second core network device. For example, the first core network device can indicate to temporarily store the first message by itself. For another example, the first core network device can also indicate to temporarily store the first message by other core network devices on the SAT. For example, there can be a third core network device deployed on the SAT, and the third core network device is used to store the first message. The first core network device can temporarily store the first message in the third core network device. When the first core network device temporarily stores the first message in the first core network device, the first core network device can directly send the temporarily stored first message to the second core network device when the feeder link is available. When the first core network device temporarily stores the first message in the third core network device, the first core network device can read the first message from the third core network device and send the first message to the second core network device when the feeder link is available. If the first core network device is deployed in the ground network, or the first core network device is partially deployed on the SAT, the first core network device can send the first message to the second core network device.

[0156] In some embodiments, the first core network device can temporarily store the first message. Other core network devices deployed on the SAT can temporarily store the first message. The disclosure does not limit the location of the storage of the first message.

[0157] In some embodiments, the first core network device can send the first message before sending the second message. The second message is used to indicate the identity authentication information for continuing the attachment procedure. The identity authentication information is used to authenticate the identity of the terminal.

[0158] In some embodiments, the first message can be an update location request message, but is not limited thereto.

[0159] In some embodiments, the second message can be an authentication request message.

[0160] In some embodiments, the first message is used to determine the authorization result of the terminal to the store-and-forward service operation. The authorization result can include that the terminal is authorized to perform the store-and-forward service operation, or the terminal is not authorized to perform the store-and-forward operation.

[0161] Optionally, the first message can comprise information for instructing the second core network device to return the terminal subscription information. That is, the first message can instruct the second core network device to return the terminal subscription information. The terminal subscription information can be used to determine the authorization result of the terminal to perform the S&F service operation. The first core network device can receive the terminal subscription information returned by the second core network device, and determine the authorization result based on the terminal subscription information. Alternatively, the first message can instruct the second core network device to return the terminal subscription information related to the S&F service. The terminal subscription information related to the S&F service can be used to determine the authorization result of the terminal to perform the S&F service operation. The first core network device can receive the terminal subscription information related to the S&F service returned by the second core network device, and determine the authorization result based on the terminal subscription information related to the S&F service.

[0162] Optionally, the first message can comprise information for instructing the second core network device to return the authorization result. That is, the first message can instruct the second core network device to return the authorization result of the terminal to perform the S&F service operation. Then, the second core network device can determine the authorization result of the terminal to perform the S&F service operation based on the terminal subscription information, and return the authorization result of the terminal to perform the S&F service operation to the first core network device.

[0163] Optionally, the first message can comprise information for instructing the first core network device to perform the attachment procedure of the terminal, and the attachment procedure of the terminal is an attachment procedure under the S&F service operation. That is, the first message can instruct the second core network device that the first core network device is performing the attachment procedure of the terminal under the S&F service operation. The second core network device determines to return the terminal subscription information or the authorization result. If the second core network device returns the terminal subscription information, the first core network device can determine the authorization result based on the terminal subscription information.

[0164] It can be understood that, during the attachment procedure of the terminal under the S&F service operation, the first message is sent by the first core network device to the second core network device to determine the authorization result of the terminal to perform the S&F service operation. That is, the attachment procedure can be continued in the case that the terminal is authorized to perform the S&F service operation. The attachment procedure can be stopped in the case that the terminal is not authorized to perform the S&F service operation. The satellite resource can be avoided from being wasted as much as possible.

[0165] In some embodiments, the names of the first message and the second message are not limited, wherein the first message can be, for example, an “instruction message”, a “request message”, etc. The second message can be, for example, a “request message”, etc.

[0166] In step S2103, the second core network device 102 sends the terminal subscription information to the first core network device 101.

[0167] In some embodiments, the first core network device 101 receives the terminal subscription information or the authorization result sent by the second core network device 102.

[0168] In some embodiments, the first core network device can receive the terminal subscription information sent by the second core network device, and determine the authorization result based on the terminal subscription information. Alternatively, the first core network device can receive the authorization result sent by the second core network device.

[0169] In step S2104, the first core network device 101 determines the authorization result of the terminal 104 to the store-and-forward service operation based on the terminal subscription information.

[0170] In some embodiments, if the first core network device 101 receives the terminal subscription information sent by the second core network device 102, the authorization result can be determined based on the terminal subscription information.

[0171] It can be understood that steps S2103 and S2104 are optional. For example, the second core network device can directly determine the authorization result based on the terminal subscription information and send the authorization result to the first core network device, and steps S2103 and S2104 can be omitted, and steps S2105 and S2106 described below are executed.

[0172] In step S2105, the second core network device 102 determines the authorization result of the terminal 104 to the store-and-forward service operation based on the terminal subscription information.

[0173] In some embodiments, the second core network device 102 can determine the authorization result based on the terminal subscription information. For example, if the first message includes information indicating to return the authorization result, the second core network device 102 can determine the authorization result based on the subscription information and return the authorization result.

[0174] In step S2106, the second core network device 102 sends the authorization result to the first core network device 101.

[0175] In some embodiments, the first core network device 101 receives the authorization result sent by the second core network device 102.

[0176] It can be understood that steps S2105 and S2106 are optional. For example, the second core network device can also directly return the terminal subscription information, and the first core network device determines the authorization result based on the terminal subscription information. Then steps S2105 and S2106 can be omitted, and steps S2103 and S2104 described above are executed.

[0177] Steps S2103 and S2104 in FIG. 2a are represented by solid lines, and steps S2105 and S2106 are represented by dashed lines, that is, in different embodiments, either "steps S2103 and S2104" or "steps S2105 and S2106" can be performed, and there is no primary and secondary relationship between the two, and "steps S2103 and S2104" or "steps S2105 and S2106" can be selected for execution according to actual conditions, and the present disclosure is not limited in this regard.

[0178] It can be understood that the first core network device in the present disclosure can receive terminal subscription information to determine the authorization result of the terminal by itself, or can directly receive the authorization result. It can adapt to different situations and flexibly change strategies.

[0179] In step S2107, in response to the terminal being authorized to perform the store-and-forward service operation, the first core network device 101 sends a second message to the second core network device 102.

[0180] In some embodiments, the second core network device 102 receives the second message sent by the first core network device 101, and the second message is sent by the first core network device in response to the terminal being authorized to perform the store-and-forward service operation. The second message is used to indicate identity authentication information for continuing the attachment process.

[0181] In some embodiments, if the terminal is authorized to perform the store-and-forward service operation, the first core network device can send a second message to the second core network device to continue the attachment process. If the terminal is not authorized to perform the store-and-forward service operation, the first core network device can not send the second message and stop the attachment process.

[0182] In step S2108, the second core network device 102 sends identity authentication information to the first core network device 101.

[0183] In some embodiments, the first core network device 101 receives the identity authentication information sent by the second core network device 102.

[0184] In some embodiments, the first core network device receives the identity authentication information and can continue the attachment process, that is, continue to perform the store-and-forward operation.

[0185] In step S2109, the first core network device 101 sends a third message.

[0186] In some embodiments, the first core network device can forward the third message to the terminal 104 via the access network device to continue the attach procedure. If the first core network device is deployed in the ground network and the access network device is deployed on the SAT, the first core network device can send the third message to the access network device, and the access network device forwards the third message. If the service link between the access network device and the terminal is unavailable, the access network device can temporarily store the third message until the service link is available, and then forward the third message. If the first core network device is deployed on the SAT or partially deployed on the SAT, and the service link between the first core network device deployed on the SAT and the terminal deployed in the ground network is unavailable, the first core network device can instruct to temporarily store the third message until the service link is available, and then send the stored third message to the terminal. For example, the first core network device can instruct itself to temporarily store the third message. For another example, the first core network device can also instruct other core network devices on the SAT to temporarily store the third message. For example, there can be a third core network device deployed on the SAT, which can be used to store the third message. The first core network device can temporarily store the third message in the third core network device. When the first core network device temporarily stores the third message in the first core network device, when the feeder link is available, the first core network device can directly send the temporarily stored third message to the second core network device. When the first core network device temporarily stores the third message in the third core network device, when the feeder link is available, the first core network device can read the third message from the third core network device and send the third message to the second core network device. Wherein, there can be multiple core network devices including the first core network device deployed on the SAT. That is, the first core network device or other core network devices can temporarily store the third message until the service link is available, and then send the stored third message to the access network device and forward it to the terminal by the access network device.

[0187] In some embodiments, the access network device can temporarily store the third message. The first core network device can temporarily store the third message. Other core network devices deployed on the SAT can temporarily store the third message. The present disclosure does not limit the location of the third message storage.

[0188] In some embodiments, the terminal 104 receives the third message sent by the first core network device 101 to continue the attach procedure.

[0189] In some embodiments, the third message is used to instruct the terminal to return the terminal identity authentication information for continuing the attach procedure. For example, the third message can be an authentication request. The terminal can return the authentication information, and the first network device continues the subsequent process to perform the store-and-forward operation.

[0190] In some embodiments, the first core network device can send the third message to the terminal through the access network device. For example, the first core network device can send the third message to the access network device, and the access network device forwards the third message to the terminal.

[0191] In some embodiments, the name of the third message is not limited, which can be, for example, an “indication message”, a “response message”, and the like.

[0192] In step S2110, the first core network device 101 sends a fourth message in response to the terminal not being authorized to perform the store-and-forward service operation.

[0193] In some embodiments, the first core network device 101 can send the fourth message to the terminal to indicate to stop the attachment process. For example, the fourth message can be an attach reject message. If the first core network device is deployed in the ground network and the access network device is deployed on the SAT, the first core network device can send the fourth message to the access network device, and the access network device forwards the fourth message. If the service link between the access network device and the terminal is unavailable, the access network device can temporarily store the third message until the service link is available, and then forward the third message. If the first core network device is deployed on the SAT or partially deployed on the SAT, and the service link between the first core network device deployed on the SAT and the terminal deployed in the ground network is unavailable, the first core network device can indicate to temporarily store the fourth message until the service link is available, and then send the stored fourth message to the terminal. The first core network device can temporarily store the fourth message itself. For another example, the first core network device can also instruct other core network devices on the SAT to temporarily store the fourth message. For example, there can be a third core network device deployed on the SAT, which can be used to store the fourth message. The first core network device can temporarily store the fourth message in the third core network device. When the first core network device temporarily stores the fourth message in the first core network device, when the feeder link is available, the first core network device can directly send the temporarily stored fourth message to the second core network device. When the first core network device temporarily stores the fourth message in the third core network device, when the feeder link is available, the first core network device can read the fourth message from the third core network device and send the fourth message to the second core network device. Wherein, there can be multiple core network devices including the first core network device on the SAT. That is, the first core network device or other core network devices can temporarily store the fourth message until the service link is available, and then send the stored fourth message to the access network device and forward it to the terminal by the access network device.

[0194] In some embodiments, the access network device can temporarily store the fourth message. The first core network device can temporarily store the fourth message. Other core network devices deployed on the SAT can temporarily store the fourth message. The disclosure does not limit the location of the fourth message storage.

[0195] In some embodiments, the first core network device can send the fourth message to the terminal through the access network device. For example, the first core network device can send the fourth message to the access network device, and the access network device forwards the fourth message to the terminal.

[0196] In some embodiments, the fourth message is used to indicate that the first core network device rejects the attachment of the terminal.

[0197] In some embodiments, the name of the fourth message is not limited, which can be, for example, “indication message”, “response message”, etc.

[0198] It can be understood that in some cases, steps S2105, S2106 and S2107 are optional. For example, if the terminal is authorized to perform the store-and-forward service operation, the first core network device can send the second message to the second core network device, receive the identity authentication information sent by the second core network device, and continue the attachment process. In some cases, step S2108 is optional. For example, if the terminal is not authorized to perform the store-and-forward service operation, the first core network device can not send the second message and stop the terminal attachment process. That is, stop the service forwarding operation. That is, if the terminal is authorized to perform the store-and-forward service operation, steps S2105, S2106 and S2107 can be performed, and if the terminal is not authorized to perform the store-and-forward service operation, step S2108 can be performed.

[0199] The communication method related to the embodiments of the disclosure can include at least one of steps S2101-S2110. Steps S2101-S2110 can be implemented as separate embodiments, and under non-contradictory conditions, each embodiment can be combined and adjusted in order. For example, step S2102 can be implemented as an independent embodiment, but is not limited thereto.

[0200] In some embodiments, some steps are optional, and one or more of these steps can be omitted or replaced in different embodiments. For example, steps S2103 and S2104 are optional. For another example, steps S2105, S2106 and S2107 are optional. For another example, step S2108 is optional.

[0201] In some embodiments, other optional implementations described before or after the description corresponding to FIG. 2a can be referred to.

[0202] It can be understood that the disclosure can send the second message for identity authentication after sending the first message and determining the authorization result of the terminal to the store-and-forward service operation. That is, the authorization of the terminal to perform the store-and-forward service operation is determined before identity authentication. So that when the terminal is not authorized to perform the store-and-forward service operation, identity authentication can not be performed, resources are saved, and efficiency is improved.

[0203] FIG. 2b is an interaction diagram of a communication method according to an embodiment of the disclosure. As shown in FIG. 2b, the embodiment of the disclosure relates to a communication method for the communication system 100, and the above method comprises:

[0204] In step S2201, the terminal 104 sends an attach request.

[0205] The optional implementation of step S2201 can refer to the optional implementation of step S2101 in FIG. 2a and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0206] In step S2202, the first core network device 101 sends a first message to the second core network device 102 during the execution of the terminal's attach process, which is an attach process under the store-and-forward operation.

[0207] In some embodiments, the second core network device 102 receives the first message sent by the first core network device 101 during the execution of the terminal's attach process, which is an attach process under the store-and-forward operation. If the first core network device is deployed on the SAT, and the feeder link between the first core network device and the second core network device deployed in the ground network is unavailable, the first core network device can indicate to temporarily store the first message until the feeder link is available, and then send the stored first message to the second core network device. For example, the first core network device can indicate itself to temporarily store the first message. For another example, the first core network device can also indicate other core network devices on the SAT to temporarily store the first message. For example, there can be a third core network device deployed on the SAT, which is used to store the first message. The first core network device can temporarily store the first message in the third core network device. When the first core network device temporarily stores the first message in the first core network device, when the feeder link is available, the first core network device can directly send the temporarily stored first message to the second core network device. When the first core network device temporarily stores the first message in the third core network device, when the feeder link is available, the first core network device can read the first message from the third core network device and send it to the second core network device. If the first core network device is deployed in the ground network, or the first core network device is partially deployed on the SAT, the first core network device can send the first message to the second core network device.

[0208] In some embodiments, the first core network device can temporarily store the first message. Other core network devices deployed on the SAT can temporarily store the first message. The disclosure does not limit the location of the first message storage.

[0209] In some embodiments, the first message is used to determine the authorization result of the terminal for the store-and-forward service operation. The first message is also used to instruct the second core network device to return the terminal identity authentication information used to continue the attachment process, which is used to authenticate the identity of the terminal.

[0210] In some embodiments, the first message can be sent alone. For example, the first message is used to determine the authorization result of the terminal for the store-and-forward service operation, and is also used to achieve the function of the second message, i.e., is also used to instruct the second core network device to return the terminal identity authentication information used to continue the attachment process.

[0211] In some embodiments, when the first message is used to determine the authorization result of the terminal for the store-and-forward service operation, and is also used to instruct the second core network device to return the terminal identity authentication information used to continue the attachment process, the first message can be an identity authentication request message. That is, the identity authentication request message can be used to instruct the return of the identity authentication information, and is also used to determine the authorization result of the terminal for the store-and-forward service operation.

[0212] In some embodiments, the first message can include information used to instruct the return of the terminal subscription information; can include information used to instruct the return of the authorization result; and can include information used to instruct the first core network device to perform the attachment process of the terminal, and the attachment process of the terminal is the attachment process under the store-and-forward service operation. For details, reference can be made to the above embodiments, which will not be described here.

[0213] It can be understood that the first message can also be used to instruct the return of the terminal identity authentication information, i.e., assumes the function of the second message, which is used to determine the authorization result of the terminal and is also used to instruct the return of the terminal identity authentication information, so as to save the signaling consumption.

[0214] Step S2203: The second core network device 102 sends the identity authentication information and the terminal subscription information to the first core network device 101.

[0215] In some embodiments, the first core network device 101 receives the identity authentication information and the terminal subscription information sent by the second core network device 102.

[0216] In some embodiments, the terminal subscription information can be used by the first core network device to determine the authorization result. The identity authentication information can be used to continue the attachment process, i.e., to continue the store-and-forward service operation, when the terminal is authorized to perform the store-and-forward operation.

[0217] In some embodiments, when the first message comprises information for indicating the terminal subscription information, the second core network device can return the identity authentication information and the terminal subscription information. When the first message comprises information for indicating that the first core network device performs the attachment procedure of the terminal, and the attachment procedure of the terminal is the attachment procedure under the store-and-forward service operation, the second core network device can return the identity authentication information and the terminal subscription information.

[0218] In step S2204, the first core network device 101 determines the authorization result of the terminal 104 to the store-and-forward service operation based on the terminal subscription information.

[0219] The optional implementation of step S2204 can refer to the optional implementation of step S2104 in FIG. 2a and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0220] It can be understood that steps S2203 and S2204 are optional. For example, the second core network device can return the identity authentication information and / or the authorization result, and then steps S2203 and S2204 are omitted, and steps S2205 and S2206 described below are performed.

[0221] In step S2205, the second core network device 102 determines the authorization result of the terminal 104 to the store-and-forward service operation based on the terminal subscription information.

[0222] The optional implementation of step S2205 can refer to the optional implementation of step S2105 in FIG. 2a and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0223] In step S2206, the second core network device 102 sends the identity authentication information and / or the authorization result to the first core network device 101.

[0224] In some embodiments, the first core network device 101 receives the identity authentication information and / or the authorization result sent by the second core network device 101.

[0225] In some embodiments, the second core network device 102 can send the identity authentication information to the first core network device 101. For example, the second core network device 102 can send the identity authentication information to the first core network device 101 in response to the terminal being authorized to perform the store-and-forward service operation. When the first core network device receives the identity authentication information, it can be determined that the terminal is authorized to perform the store-and-forward service operation, and the attachment procedure is continued based on the identity authentication information. On the contrary, if the first core network device does not receive the identity authentication information, it can be determined that the terminal is not authorized to perform the store-and-forward operation, and the attachment procedure is stopped.

[0226] In some embodiments, the second core network device 102 can send the authorization result to the first core network device 101. For example, the second core network device 102 can send the authorization result to the first core network device 101 in response to that the terminal is not authorized to perform the store-and-forward service operation. And the authorization result indicates that the terminal is not authorized to perform the store-and-forward service operation. When the first core network device receives the authorization, and the authorization result indicates that the terminal is not authorized to perform the store-and-forward service operation, the terminal stops the attachment process.

[0227] In some embodiments, the second core network device 102 can send the identity authentication information and the authorization result to the first core network device 101. For example, the second core network device 102 can send the identity authentication information and the authorization result to the first core network device 101 in response to that the terminal is authorized to perform the store-and-forward service operation. And the authorization result indicates that the terminal is authorized to perform the store-and-forward service operation.

[0228] In some embodiments, the second core network device 102 can send an attachment rejection message to the first core network device 101 to indicate that the authorization result is that the terminal is not authorized to perform the store-and-forward service operation. The second core network device 102 can send an identity authentication response message to the first core network device 101 to indicate that the authorization result is that the terminal is not authorized to perform the store-and-forward service operation.

[0229] In some embodiments, the second core network device 102 can send an identity authentication response message to the first core network device 101, and indicate the authorization result of the terminal to the store-and-forward service operation by carrying different values in the identity authentication response message.

[0230] It can be understood that if the terminal is not authorized to perform the store-and-forward service operation, the second core network device can not return the identity authentication information, and directly send the authorization result to indicate the first core network device to stop the attachment process of the terminal. And when the terminal is authorized to perform the store-and-forward service operation, the second core network device returns the identity authentication information, so that the first core network device continues the attachment process based on the identity authentication information, that is, continues to perform the store-and-forward service operation.

[0231] It can be understood that steps S2205 and S2206 are optional. For example, the second core network device can return the identity authentication information and the terminal subscription information, and the first core network device determines the authorization result based on the terminal subscription information by itself. Then steps S2205 and S2206 are omitted, and steps S2203 and S2204 are executed.

[0232] It can be understood that the second core network device can return the identity authentication information and the terminal subscription information, so that the terminal can determine the authorization result based on the terminal subscription information, and directly continue the attachment process based on the identity authentication information when the terminal is authorized to perform the store-and-forward service operation, to improve efficiency. The second core network device can only return the identity authentication information, and the first core network device can determine that the terminal is authorized to perform the store-and-forward service operation upon receiving the identity authentication information, and continue the attachment process based on the identity authentication information. That is, the first core network device does not need to separately receive the authorization result, saving resources. Correspondingly, the second core network device can also only return the authorization result that the terminal is not authorized to perform the store-and-forward service operation, and the first core network device can stop the attachment process based on the authorization result. The second core network device does not need to send the identity authentication information to the first core network device, improving efficiency and saving resources. The second core network device can also return the identity authentication information and the authorization result, and the first core network device can directly continue or not continue the attachment process based on the authorization result, improving efficiency.

[0233] In step S2207, the first core network device 101 sends a third message in response to that the terminal is authorized to perform the store-and-forward service operation.

[0234] The optional implementation of step S2207 can refer to the optional implementation of step S2109 in FIG. 2a, and other associated parts in the embodiments involved in FIG. 2a, which will not be described here.

[0235] It can be understood that, since the first message is also used to indicate the return of the identity authentication information in the embodiment, if the terminal is authorized to perform the store-and-forward service operation, the first core network device does not need to send the second message to the second core network device again. The attachment process can be directly continued to continue the store-and-forward service operation.

[0236] In step S2208, the first core network device 101 sends a fourth message in response to that the terminal is not authorized to perform the store-and-forward service operation.

[0237] The optional implementation of step S2208 can refer to the optional implementation of step S2110 in FIG. 2a, and other associated parts in the embodiments involved in FIG. 2a, which will not be described here.

[0238] The communication method involved in the embodiments of the present disclosure can include at least one of steps S2201 to S2208. Steps S2201 to S2208 can each be implemented as a separate embodiment, and the embodiments can be combined and adjusted in order as long as they are not contradictory. For example, step S2202 can be implemented as an independent embodiment, but is not limited thereto.

[0239] In some embodiments, some steps are optional, and one or more of these steps can be omitted or replaced in different embodiments. For example, step S2203 and step S2204 are optional. For another example, step S2205, step S2206 are optional.

[0240] In some embodiments, other optional implementations can be found in the description before or after the description of Figure 2b.

[0241] Figure 3a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 3a, the embodiment of the present disclosure relates to a communication method, which is performed by the first core network device 101, and the above method comprises the following steps:

[0242] Step S3101, obtaining an attachment request.

[0243] Optional implementations of step S3101 can be found in the optional implementations of step S2101 of Figure 2a and other associated parts of the embodiments involved in Figure 2a, which will not be repeated here.

[0244] In some embodiments, the first core network device 101 receives the attachment request sent by the terminal 104, but is not limited thereto, and can also receive the attachment request sent by other subjects.

[0245] In some embodiments, the first core network device 101 obtains the attachment request specified by the protocol.

[0246] In some embodiments, the first core network device 101 obtains the attachment request from the upper layer(s).

[0247] In some embodiments, the first core network device 101 processes to obtain the attachment request.

[0248] In some embodiments, step S3101 is omitted, and the first core network device 101 autonomously implements the function indicated by the attachment request, or the above function is default or default.

[0249] In some embodiments, the attachment request is forwarded by the access network device.

[0250] Step S3102, during the execution of the attachment process of the terminal, a first message is sent, and the attachment process of the terminal is an attachment process under a store-and-forward operation.

[0251] Optional implementations of step S3102 can be found in the optional implementations of step S2102 of Figure 2a and other associated parts of the embodiments involved in Figure 2a, which will not be repeated here.

[0252] In some embodiments, the first core network device 101 sends the first message to the second core network device 102, but is not limited thereto, and can send the first message to other entities.

[0253] In step S3103, terminal subscription information is acquired, and based on the terminal subscription information, an authorization result of the terminal 104 to the store-and-forward service operation is determined; or the authorization result is acquired.

[0254] The optional implementation of step S3103 can refer to the optional implementation of steps S2103 to S2106 in FIG. 2a and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0255] In some embodiments, the first core network device 101 receives the terminal subscription information or the authorization result sent by the second core network device 102, but is not limited thereto, and can receive the terminal subscription information or the authorization result sent by other entities.

[0256] In some embodiments, the first core network device 101 acquires the terminal subscription information or the authorization result specified by a protocol.

[0257] In some embodiments, the first core network device 101 acquires the terminal subscription information or the authorization result from an upper layer.

[0258] In some embodiments, the first core network device 101 processes to obtain the terminal subscription information or the authorization result.

[0259] In some embodiments, step S3103 is omitted, and the first core network device 101 autonomously implements the function indicated by the terminal subscription information or the authorization result, or the above function is default or default.

[0260] In some embodiments, the authorization result is determined based on the terminal subscription information.

[0261] In step S3104, a second message is sent in response to the terminal being authorized to perform the store-and-forward service operation.

[0262] The optional implementation of step S3104 can refer to the optional implementation of step S2107 in FIG. 2a and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0263] In some embodiments, the first core network device 101 sends the second message to the second core network device 102, but is not limited thereto, and can send the second message to other entities.

[0264] In step S3105, identity authentication information is acquired.

[0265] The optional implementation of step S3105 can refer to the optional implementation of step S2108 in FIG. 2a, and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0266] In some embodiments, the first core network device 101 receives the identity authentication information sent by the second core network device 102, but is not limited thereto, and can also receive identity authentication information sent by other subjects.

[0267] In some embodiments, the first core network device 101 obtains the identity authentication information specified by a protocol.

[0268] In some embodiments, the first core network device 101 obtains the identity authentication information from an upper layer.

[0269] In some embodiments, the first core network device 101 processes to obtain the identity authentication information.

[0270] In some embodiments, step S3105 is omitted, and the first core network device 101 autonomously implements the function indicated by the identity authentication information, or the above function is default or default.

[0271] Step S3106, sending a third message.

[0272] The optional implementation of step S3106 can refer to the optional implementation of step S2109 in FIG. 2a, and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0273] In some embodiments, the first core network device 101 sends the third message to the terminal 104, but is not limited thereto, and can also send the third message to other entities.

[0274] Step S3107, in response to the terminal not being authorized to perform the store-and-forward service operation, the first core network device 101 sends a fourth message to the terminal 104.

[0275] The optional implementation of step S3107 can refer to the optional implementation of step S2110 in FIG. 2a, and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0276] In some embodiments, the first core network device 101 sends the fourth message to the terminal 104, but is not limited thereto, and can also send the fourth message to other entities.

[0277] FIG. 3b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3b, the embodiment of the present disclosure relates to a communication method, which is performed by the first core network device 101, and the above method comprises:

[0278] Step S3201: obtaining the attach request.

[0279] The optional implementation of step S3201 can refer to the optional implementation of step S2201 in FIG. 2b, and other associated parts in the embodiments related to FIG. 2b, which will not be repeated here.

[0280] In some embodiments, the first core network device 101 receives the attach request sent by the terminal 104, but is not limited thereto, and can also receive the attach request sent by other subjects.

[0281] In some embodiments, the first core network device 101 obtains the attach request specified by a protocol.

[0282] In some embodiments, the first core network device 101 obtains the attach request from an upper layer.

[0283] In some embodiments, the first core network device 101 processes to obtain the attach request.

[0284] In some embodiments, step S3201 is omitted, and the first core network device 101 autonomously implements the function indicated by the attach request, or the above function is default or default.

[0285] In some embodiments, the attach request is forwarded by an access network device.

[0286] Step S3202: sending a first message during execution of the attach procedure of the terminal, the attach procedure of the terminal being the attach procedure under the store-and-forward operation.

[0287] The optional implementation of step S3202 can refer to the optional implementation of step S2202 in FIG. 2b, and other associated parts in the embodiments related to FIG. 2b, which will not be repeated here.

[0288] In some embodiments, the first core network device 101 sends the first message to the second core network device 102, but is not limited thereto, and can also send the first message to other entities.

[0289] Step S3203: obtaining identity authentication information and terminal subscription information, and determining an authorization result of the terminal 104 to the store-and-forward service operation based on the terminal subscription information; or obtaining the identity authentication information and / or the authorization result.

[0290] The optional implementation of step S3203 can refer to the optional implementation of steps S2203 to S2206 in FIG. 2b, and other associated parts in the embodiments related to FIG. 2b, which will not be repeated here.

[0291] In some embodiments, the first core network device 101 receives the identity authentication information, the terminal subscription information and / or the authorization result sent by the second core network device 102, but is not limited thereto, and can also receive the identity authentication information, the terminal subscription information and / or the authorization result sent by other subjects.

[0292] In some embodiments, the first core network device 101 obtains the identity authentication information, the terminal subscription information and / or the authorization result specified by a protocol.

[0293] In some embodiments, the first core network device 101 obtains the identity authentication information, the terminal subscription information and / or the authorization result from upper layer(s).

[0294] In some embodiments, the first core network device 101 processes to obtain the identity authentication information, the terminal subscription information and / or the authorization result.

[0295] In some embodiments, the step S3203 is omitted, and the first core network device 101 autonomously implements the function indicated by the identity authentication information, the terminal subscription information and / or the authorization result, or the above function is default or default.

[0296] In some embodiments, the authorization result is determined based on the terminal subscription information.

[0297] Step S3204, in response to the terminal being authorized to perform the store-and-forward service operation, sending a third message.

[0298] The optional implementation of step S3204 can refer to the optional implementation of step S2207 in FIG. 2b, and other associated parts in the embodiments involved in FIG. 2b, which will not be repeated here.

[0299] In some embodiments, the first core network device 101 sends the third message to the terminal 104, but is not limited thereto, and can also send the third message to other entities.

[0300] Step S3205, in response to the terminal not being authorized to perform the store-and-forward service operation, sending a fourth message.

[0301] The optional implementation of step S3205 can refer to the optional implementation of step S2208 in FIG. 2b, and other associated parts in the embodiments involved in FIG. 2b, which will not be repeated here.

[0302] In some embodiments, the first core network device 101 sends the fourth message to the terminal 104, but is not limited thereto, and can also send the fourth message to other entities.

[0303] FIG. 3c is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3c, the embodiment of the present disclosure relates to a communication method, which is performed by the first core network device 101, and the method comprises the following steps.

[0304] In step S3301, a first message is sent during an attachment procedure of the terminal, and the attachment procedure of the terminal is an attachment procedure under a store-and-forward operation.

[0305] The optional implementation of step S3301 can refer to the optional implementation of step S2102 in FIG. 2a, the optional implementation of step S2202 in FIG. 2b, and other associated parts in the embodiments related to FIGS. 2a and 2b, which will not be repeated here.

[0306] In some embodiments, the first core network device 101 sends the first message to the second core network device 102, but is not limited to this, and can also send the first message to other entities.

[0307] FIG. 4a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4a, the embodiment of the present disclosure relates to a communication method, which is performed by the second core network device 102, and the method comprises the following steps.

[0308] In step S4101, a first message is acquired.

[0309] The optional implementation of step S4101 can refer to the optional implementation of step S2102 in FIG. 2a, and other associated parts in the embodiments related to FIG. 2a, which will not be repeated here.

[0310] In some embodiments, the second core network device 102 receives the first message sent by the first core network device 101, but is not limited to this, and can also receive the first message sent by other subjects.

[0311] In some embodiments, the second core network device 102 acquires the first message specified by a protocol.

[0312] In some embodiments, the second core network device 102 acquires the first message from an upper layer.

[0313] In some embodiments, the second core network device 102 processes to obtain the first message.

[0314] In some embodiments, step S4101 is omitted, and the second core network device 102 autonomously implements the function indicated by the first message, or the above function is default or default.

[0315] In step S4102, terminal subscription information is sent; or based on the terminal subscription information, an authorization result of the terminal 104 to the store-and-forward service operation is determined, and the authorization result is sent.

[0316] The optional implementation of step S4102 can refer to the optional implementation of steps S2103-S2106 in FIG. 2a and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0317] In some embodiments, the second core network device 102 sends the terminal subscription information or the authorization result to the first core network device 101, but is not limited thereto, and can send the terminal subscription information or the authorization result to other entities.

[0318] In some embodiments, the authorization result is determined based on the terminal subscription information.

[0319] Step S4103: obtaining a second message.

[0320] The optional implementation of step S4103 can refer to the optional implementation of step S2107 in FIG. 2a and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0321] In some embodiments, the second core network device 102 receives the second message sent by the first core network device 101, but is not limited thereto, and can receive the second message sent by other subjects.

[0322] In some embodiments, the second core network device 102 obtains the second message specified by a protocol.

[0323] In some embodiments, the second core network device 102 obtains the second message from an upper layer.

[0324] In some embodiments, the second core network device 102 processes to obtain the second message.

[0325] In some embodiments, step S4103 is omitted, and the second core network device 102 autonomously implements the function indicated by the second message or the above function is default.

[0326] Step S4104: sending identity authentication information.

[0327] The optional implementation of step S4104 can refer to the optional implementation of step S2108 in FIG. 2a and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0328] In some embodiments, the second core network device 102 sends the identity authentication information to the first core network device 101, but is not limited thereto, and can send the identity authentication information to other entities.

[0329] FIG. 4b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4b, the embodiment of the present disclosure relates to a communication method, which is performed by the second core network device 102, and the above method comprises the following steps:

[0330] In step S4201, the first message is acquired.

[0331] The optional implementation of step S4201 can refer to the optional implementation of step S2202 in FIG. 2b, and other associated parts in the embodiments involved in FIG. 2b, which will not be repeated here.

[0332] In some embodiments, the second core network device 102 receives the first message sent by the first core network device 101, but is not limited thereto, and can also receive the first message sent by other subjects.

[0333] In some embodiments, the second core network device 102 acquires the first message specified by a protocol.

[0334] In some embodiments, the second core network device 102 acquires the first message from an upper layer.

[0335] In some embodiments, the second core network device 102 processes to obtain the first message.

[0336] In some embodiments, step S4201 is omitted, and the second core network device 102 autonomously implements the function indicated by the first message, or the above function is default or default.

[0337] In step S4202, identity authentication information and terminal subscription information are sent, or based on the terminal subscription information, an authorization result of the terminal 104 to the store-and-forward service operation is determined, and the identity authentication information and / or the authorization result are sent.

[0338] The optional implementation of step S4202 can refer to the optional implementation of steps S2203 to S2206 in FIG. 2b, and other associated parts in the embodiments involved in FIG. 2b, which will not be repeated here.

[0339] In some embodiments, the second core network device 102 sends the terminal subscription information or the authorization result to the first core network device 101, but is not limited thereto, and can also send the terminal subscription information or the authorization result to other entities.

[0340] In some embodiments, the authorization result is determined based on the terminal subscription information.

[0341] FIG. 4c is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4c, the embodiment of the present disclosure relates to a communication method, which is performed by the second core network device 102, and the above method comprises the following steps:

[0342] Step S4301: obtaining the first message.

[0343] The optional implementation of step S4301 can refer to the optional implementation of step S2202 in FIG.2b, and other associated parts in the embodiments related to FIG.2b, which will not be repeated here.

[0344] In some embodiments, the second core network device 102 receives the first message sent by the first core network device 101, but is not limited thereto, and can also receive the first message sent by other subjects.

[0345] In some embodiments, the second core network device 102 obtains the first message specified by a protocol.

[0346] In some embodiments, the second core network device 102 obtains the first message from upper layer(s).

[0347] In some embodiments, the second core network device 102 processes to obtain the first message.

[0348] In some embodiments, step S4301 is omitted, and the second core network device 102 autonomously implements the function indicated by the first message, or the above function is default or default.

[0349] FIG.5 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG.5, the embodiment of the present disclosure relates to a communication method, which is performed by the access network device 103, and the above method comprises the following steps:

[0350] Step S5101: forwarding a third message or a fourth message sent by the first core network device during performing an attachment procedure of a terminal.

[0351] The optional implementation of step S5101 can refer to the optional implementation of steps S2109 and S2110 in FIG.2a, and other associated parts in the embodiments related to FIG.2a, which will not be repeated here.

[0352] FIG.6a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG.6a, the embodiment of the present disclosure relates to a communication method, which is performed by the terminal 104, and the above method comprises the following steps:

[0353] Step S6101: sending an attachment request.

[0354] The optional implementation of step S6101 can refer to the optional implementation of step S2101 in FIG.2a, and other associated parts in the embodiments related to FIG.2a, which will not be repeated here.

[0355] In some embodiments, the terminal 104 can send an attach request to the first core network device 101, but is not limited thereto, and can also send an attach request to other entities.

[0356] In step S6102, the third message or the fourth message is acquired.

[0357] The optional implementation of step S6102 can refer to the optional implementation of step S2109 and step S2110 in FIG. 2a, and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0358] In some embodiments, the terminal 104 receives the third message or the fourth message sent by the first core network device 101 and forwarded by the access network device, but is not limited thereto, and can also receive the third message or the fourth message sent by other subjects.

[0359] In some embodiments, the terminal 104 acquires the third message or the fourth message specified by the protocol.

[0360] In some embodiments, the terminal 104 acquires the third message or the fourth message from the upper layer(s).

[0361] In some embodiments, the terminal 104 processes to obtain the third message or the fourth message.

[0362] In some embodiments, step S6102 is omitted, and the terminal 104 autonomously implements the function indicated by the third message or the fourth message, or the above function is default or default.

[0363] FIG. 6b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG. 6b, the embodiment of the present disclosure relates to a communication method, which is performed by the terminal 104, and the above method comprises:

[0364] In step S6201, the third message or the fourth message is acquired.

[0365] The optional implementation of step S6201 can refer to the optional implementation of step S2109 and step S2110 in FIG. 2a, and other associated parts in the embodiments involved in FIG. 2a, which will not be repeated here.

[0366] In some embodiments, the terminal 104 receives the third message or the fourth message sent by the first core network device 101 and forwarded by the access network device, but is not limited thereto, and can also receive the third message or the fourth message sent by other subjects.

[0367] In some embodiments, the terminal 104 acquires the third message or the fourth message specified by the protocol.

[0368] In some embodiments, the terminal 104 obtains the third message or the fourth message from upper layer(s).

[0369] In some embodiments, the terminal 104 processes to obtain the third message or the fourth message.

[0370] In some embodiments, the step S6201 is omitted, and the terminal 104 autonomously implements the function indicated by the third message or the fourth message, or the above function is default or default.

[0371] FIG. 7 is an interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 7, the embodiment of the present disclosure relates to a communication method for a communication system, and the above method comprises:

[0372] In step S7101, the first core network device 101 sends a first message to the second core network device 102 during performing an attachment process of the terminal 104.

[0373] In step S7102, the second core network device 102 receives the first message sent by the first core network device 101.

[0374] In step S7103, the access network device 103 forwards the third message or the fourth message sent by the first core network device 101.

[0375] In step S7104, the terminal 104 receives the third message or the fourth message forwarded by the access network device 103.

[0376] In some embodiments, the above method can include the method of the above embodiments related to the communication system 100, the first core network device 101, the second core network device 102, the access network device 103, and the terminal 104, and the like, which will not be repeated here.

[0377] FIG. 8 is an interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 8, the embodiment of the present disclosure takes an example that the access network device is deployed on a satellite, and the first core network device and the second core network device are deployed on a ground network, and provides an embodiment of a communication method as follows:

[0378] In step S8101, the UE establishes an RRC connection with the eNB.

[0379] In step S8102, the UE sends an attachment request.

[0380] In some embodiments, the UE initiates the attachment process by sending the attachment request.

[0381] In step S8103, the eNB sends an RRC connection release message to the UE.

[0382] In some embodiments, when the service link becomes unavailable, the eNB sends an RRC connection release message to the UE.

[0383] When the feeder link is available:

[0384] Step S8104, the eNB forwards the attach request to the MME.

[0385] In some embodiments, the S&F indication is included in the attach request. That is, the attach request can indicate that the attach procedure of the terminal is under the store-and-forward service operation.

[0386] Step S8105a, determine the authorization result of the UE to the store-and-forward service operation.

[0387] Step S8105b, identity authentication request and identity authentication response between the MME and the HSS.

[0388] In some embodiments, step S8105a and step S8105b can be executed separately or together. Specifically, please refer to the following three cases:

[0389] Case 1 (step S8105a is executed before step S8105b, and the MME performs S&F authorization):

[0390] In which, the MME performs S&F authorization, that is, the MME can determine whether the UE is authorized to perform the S&F service operation.

[0391] The MME first sends an update location request message to the HSS.

[0392] In some embodiments, the update location request message is the first message in the above embodiments.

[0393] The HSS retrieves the S&F related UE subscription information based on the received update location request message, and returns it to the MME by sending an update location acknowledgement (ACK) message.

[0394] The MME determines whether the UE is authorized to perform the S&F service operation based on the received UE subscription information.

[0395] If the UE is authorized, the MME initiates the authentication process by sending an authentication request message to the HSS in step S8105b. In step S8105b, the HSS returns an identity authentication response containing identity authentication information.

[0396] If the UE is not authorized, the MME proceeds to step S8106a.

[0397] Case 2 (step S8105a is integrated in step S8105b, MME retrieves UE subscription information and performs S&F authorization):

[0398] The MME sends an authentication request message to the HSS, which can also indicate that the UE is performing an attach procedure under S&F service operation.

[0399] The HSS returns UE subscription information and identity authentication response related to S&F in step S8105b.

[0400] In step S8105a, the MME determines whether the UE is authorized to perform S&F service operation based on the received UE subscription information.

[0401] If the UE is authorized, the MME proceeds to step S8106b.

[0402] If the UE is not authorized, the MME proceeds to step S8106a.

[0403] Case 3 (step S8105a is integrated in step S8105b, HSS performs S&F authorization and returns authorization result):

[0404] The MME sends an authentication request message to the HSS, which can also indicate that the UE is performing an attach procedure under S&F service operation.

[0405] The HSS checks the UE subscription information to determine whether the UE is authorized to use S&F service operation.

[0406] If the UE is authorized, the HSS determines to perform authentication and returns an authentication vector to the MME.

[0407] If the UE is not authorized, the HSS determines not to perform and returns an authorization failure response to the MME.

[0408] In some embodiments, the MME sends a message to the eNB based on the response from the HSS.

[0409] Step S8106a, the MME sends an attach reject message to the eNB.

[0410] In some embodiments, if the response from the HSS contains UE subscription information, but the MME checks S&F authorization fails, i.e. the MME determines based on the UE subscription information that the UE is not authorized to perform store-and-forward service operation, the MME can send an attach reject message to the eNB.

[0411] In some embodiments, the attach reject message is the fourth message in the above embodiments.

[0412] In some embodiments, if the response from the HSS contains both UE subscription information and identity authentication information, but the MME checks that the S&F authorization fails, i.e., the MME determines based on the UE subscription information that the UE is not authorized to perform the store-and-forward service operation, the MME can send an attach reject message to the eNB.

[0413] In some embodiments, if the response from the HSS contains a S&F authorization failure result, i.e., the HSS determines based on the UE subscription information that the UE is not authorized to perform the store-and-forward service operation and sends a response containing the S&F authorization failure result to the MME, the MME can send an attach reject message to the eNB.

[0414] Step S8106b, the MME sends an identity authentication request message to the eNB.

[0415] In some embodiments, if the response from the HSS contains both UE subscription information and identity authentication information, and the MME checks that the S&F authorization succeeds, i.e., the MME determines based on the UE subscription information that the UE is authorized to perform the store-and-forward service operation, the MME can send an identity authentication request message to the eNB.

[0416] In some embodiments, if the response from the HSS contains only identity authentication information, the MME can determine that the UE is authorized to perform the store-and-forward service operation and can send an identity authentication request message to the eNB.

[0417] When the service link is available:

[0418] Step S8107, the UE establishes an RRC connection with the eNB.

[0419] In some embodiments, the eNB forwards the message to the UE, which can be an attach reject message or an identity authentication request message.

[0420] Step S8108a, the eNB forwards the attach reject message to the UE.

[0421] In some embodiments, if the UE receives the attach reject message, the UE stops the attach procedure and waits to restart the attach procedure until the SAT is able to simultaneously establish the service link and the feeder link. Then the following steps S8109 to S8118 are not performed.

[0422] Step S8108b, the eNB forwards the identity authentication request message to the UE.

[0423] In some embodiments, if the UE receives the identity authentication request message, the UE returns an identity authentication response.

[0424] Step S8109, the eNB sends an RRC connection release message to the UE.

[0425] In some embodiments, when the service link becomes unavailable, the eNB sends an RRC connection release message to the UE.

[0426] When the feeder link is available:

[0427] At step S8110, the eNB sends an identity authentication response message to the MME.

[0428] At step S8111, the MME returns a non-access stratum (NAS) security mode command.

[0429] When the service link is available:

[0430] At step S8112, the UE establishes an RRC connection with the eNB.

[0431] At step S8113, the UE performs a NAS security mode control (SMC).

[0432] At step S8114, when the service link becomes unavailable, the eNB sends an RRC connection release message to the UE.

[0433] When the feeder link is available:

[0434] At step S8115, the eNB sends a NAS security management (SM) complete message to the MME.

[0435] At step S8116, the MME sends an initial context setup request message or an attach accept message.

[0436] When the service link is available:

[0437] At step S8117, the UE establishes an RRC connection with the eNB.

[0438] At step S8118, the eNB forwards the attach accept message to the UE.

[0439] FIG. 9 is a structural schematic diagram of a first core network device according to an embodiment of the present disclosure. As shown in FIG. 9, the first core network device 9100 can include a transceiver module 9101. The transceiver module 9101 is configured to send a first message to a second core network device during an attachment process of a terminal, the first message being used to determine an authorization result of the terminal to a store-and-forward service operation, the attachment process of the terminal being an attachment process under the store-and-forward service operation.

[0440] In some embodiments, the transceiver 9101 is further configured to receive terminal subscription information sent by the second core network device, and the first core network device further includes a processing module 9102 configured to determine an authorization result of the terminal to the store-and-forward service operation based on the terminal subscription information. Alternatively, the transceiver 9101 is further configured to receive the authorization result sent by the second core network device.

[0441] In some embodiments, the transceiver 9101 is further configured to, in response to the terminal being authorized to perform the store-and-forward service operation, send a second message to the second core network device, receive terminal identity authentication information sent by the second core network device, and continue the attachment process of the terminal. Alternatively, in response to the terminal not being authorized to perform the store-and-forward service operation, stop the attachment process of the terminal.

[0442] In some embodiments, the first message is further configured to indicate that the second core network device returns terminal identity authentication information used to continue the attachment process of the terminal, and the terminal identity authentication information is used to perform identity authentication on the terminal.

[0443] In some embodiments, the transceiver 9101 is further configured to receive terminal identity authentication information and terminal subscription information sent by the second core network device, wherein the terminal subscription information is used to determine the authorization result of the terminal to the store-and-forward service operation, and determine the authorization result of the terminal to perform the store-and-forward service operation based on the terminal subscription information.

[0444] In some embodiments, the transceiver 9101 is further configured to, in response to the terminal being authorized to perform the store-and-forward service operation, continue the attachment process of the terminal based on the terminal identity authentication information. Alternatively, in response to the terminal not being authorized to perform the store-and-forward service operation, stop the attachment process of the terminal.

[0445] In some embodiments, the transceiver 9101 is further configured to receive terminal identity authentication information and / or the authorization result of the terminal to the store-and-forward service operation sent by the second core network device.

[0446] In some embodiments, the transceiver 9101 is further configured to, in response to receiving the terminal identity authentication information and the authorization result sent by the second core network device, and the authorization result indicating that the terminal is authorized to perform the store-and-forward service operation, continue the attachment process of the terminal based on the identity authentication information. Alternatively, in response to receiving the authorization result sent by the second core network device, and the authorization result indicating that the terminal is not authorized to perform the store-and-forward service operation, stop the attachment process of the terminal.

[0447] In some embodiments, continuing the attachment process of the terminal includes sending a third message to the terminal, and the third message is used to instruct the terminal to return terminal identity authentication information used to continue the attachment process of the terminal. Stopping the attachment process of the terminal includes sending a fourth message to the terminal, and the fourth message is used to instruct the first core network device to reject the attachment of the terminal.

[0448] Figure 10 is a structural schematic diagram of a second core network device according to an embodiment of the present disclosure. As shown in Figure 10, the second core network device 9200 can include a transceiver module 9201. The transceiver module 9201 is configured to receive a first message sent by a first core network device, the first message being used to determine an authorization result of a terminal for a store-and-forward service operation, and the first message being sent by the first core network device during an attachment process of the terminal, the attachment process of the terminal being an attachment process under the store-and-forward service operation.

[0449] In some embodiments, the transceiver module 9201 receives the first message sent by the first core network device in the following manner: the first message is received before a second message sent by the first core network device is received, the second message being used to instruct the second core network device to return terminal identity authentication information used for continuing the attachment process. The terminal identity authentication information is used to perform identity authentication on the terminal.

[0450] In some embodiments, the transceiver module 9201 is further configured to send terminal subscription information to the first core network device.

[0451] In some embodiments, the transceiver module 9201 is further configured to receive a second message sent by the first core network device, the second message being sent by the first core network device in response to the terminal being authorized to perform the store-and-forward service operation. The identity authentication information is sent to the first core network device.

[0452] In some embodiments, the first message is further used to instruct the second core network device to return terminal identity authentication information used for continuing the attachment process, the terminal identity authentication information being used to perform identity authentication on the terminal.

[0453] In some embodiments, the transceiver module 9201 is further configured to send, to the first core network device, the terminal identity authentication information and terminal subscription information. The terminal subscription information is used by the first core network device to determine the authorization result of the terminal for performing the store-and-forward service operation based on the terminal subscription information.

[0454] In some embodiments, the second core network device further includes a processing module 9202 configured to determine the authorization result of the terminal for the store-and-forward service operation based on the terminal subscription information. The transceiver module 9201 is further configured to send the authorization result and / or the terminal identity authentication information to the first core network device.

[0455] In some embodiments, the transceiver module 9201 sends the authorization result and / or the terminal identity authentication information to the first core network device in the following manner: in response to the terminal being authorized to perform the store-and-forward service operation, the authorization result and the terminal identity authentication information are sent to the first core network device. Alternatively, in response to the terminal not being authorized to perform the store-and-forward service operation, the authorization result is sent to the first core network device to stop the attachment procedure.

[0456] FIG. 11 is a structural schematic diagram of an access network device according to an embodiment of the present disclosure. As shown in FIG. 11, the access network device 9300 can include a transceiver module 9301. The transceiver module 9301 is configured to, during the attachment procedure of the terminal, forward a third message sent by the first core network device, the third message being used to instruct the terminal to return terminal identity authentication information for continuing the attachment procedure; or forward a fourth message sent by the first core network device, the fourth message being used to instruct the first core network device to reject the attachment of the terminal; wherein the attachment procedure of the terminal is an attachment procedure under a store-and-forward service operation; and wherein the third message or the fourth message is determined by the first core network device based on an authorization result of the terminal for the store-and-forward service operation.

[0457] In some embodiments, the third message is sent by the first core network device in response to the terminal being authorized to perform the store-and-forward service operation; and the fourth message is sent by the first core network device in response to the terminal not being authorized to perform the store-and-forward service operation.

[0458] In some embodiments, the access network device 9300 can further include a processing module 9302 configured to perform the steps involved in the above embodiments.

[0459] FIG. 12 is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 12, the terminal 9400 can include a transceiver module 9401. The transceiver module 9401 is configured to, during the attachment procedure of the terminal, receive a third message forwarded by the access network device, the third message being used to instruct the terminal to return terminal identity authentication information for continuing the attachment procedure; or receive a fourth message forwarded by the access network device, the fourth message being used to instruct the first core network device to reject the attachment of the terminal; wherein the third message or the fourth message is determined by the first core network device based on an authorization result of the terminal for the store-and-forward service operation; and wherein the attachment procedure of the terminal is an attachment procedure under a store-and-forward service operation.

[0460] In some embodiments, the receiving of the third message forwarded by the access network device includes returning the terminal identity authentication information for continuing the attachment procedure; and the receiving of the fourth message forwarded by the access network device includes stopping the attachment procedure.

[0461] In some embodiments, the terminal 9400 further includes a processing module 9402 configured to perform the steps involved in the above-described embodiments.

[0462] FIG. 13 is a structural schematic diagram of a communication device 1300 according to some embodiments of the present disclosure. The communication device 1300 can be a network device, a terminal, a chip, a chip system, or a processor supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. Alternatively, the network device can be an access network device, a core network device, or the like. Alternatively, the terminal can be a user equipment or the like. The communication device 1300 can be configured to implement the methods described in the above method embodiments, and details can be referred to the descriptions in the above method embodiments.

[0463] As shown in FIG. 13, the communication device 1300 includes one or more processors 1301. The processor 1301 can be a general purpose processor, a special purpose processor, or the like, for example, a baseband processor or a central processing unit. The baseband processor can be configured to process communication protocols and communication data, and the central processing unit can be configured to control the communication device, execute programs, and process data of the programs. The communication device 1300 is configured to implement any of the above methods. Alternatively, the communication device can be a base station, a baseband chip, a terminal device, a terminal device chip, a DU, a CU, or the like.

[0464] In some embodiments, the communication device 1300 further includes one or more memories 1302 configured to store instructions. Alternatively, all or part of the memory 1302 can also be outside the communication device 1300.

[0465] In some embodiments, the communication device 1300 further includes one or more transceivers 1303. When the communication device 1300 includes one or more transceivers 1303, the transceiver 1303 performs the communication steps S2101 such as transmitting and / or receiving in the above methods, and the processor 1301 performs other steps.

[0466] In some embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Alternatively, the terms transceiver, transceiving unit, transceiver, transceiving circuit, and the like can be replaced by each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, and the like can be replaced by each other, and the terms receiver, receiving unit, receiver, receiving circuit, and the like can be replaced by each other.

[0467] In some embodiments, the communication device 1300 can include one or more interface circuits 1304. Optionally, the interface circuits 1304 are connected with the memory 1302, and the interface circuits 1304 can be used to receive signals from the memory 1302 or other devices, and can be used to send signals to the memory 1302 or other devices. For example, the interface circuits 1304 can read instructions stored in the memory 1302 and send the instructions to the processor 1301.

[0468] The communication device 1300 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 1300 described in the present disclosure is not limited thereto, and the structure of the communication device 1300 can not be limited by FIG. 13. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, and the like; (6) other devices, and the like.

[0469] FIG. 14 is a structural schematic diagram of a chip 1400 according to an embodiment of the present disclosure. For the case where the communication device 1300 is a chip or a chip system, the structural schematic diagram of the chip 1400 shown in FIG. 14 can be referred to, but is not limited thereto.

[0470] The chip 1400 includes one or more processors 1401, and the chip 1400 is configured to execute any of the above methods.

[0471] In some embodiments, the chip 1400 further includes one or more interface circuits 1402. Optionally, the interface circuits 1402 are connected with the memory 1403, and the interface circuits 1402 can be used to receive signals from the memory 1403 or other devices, and can be used to send signals to the memory 1403 or other devices. For example, the interface circuits 1402 can read instructions stored in the memory 1403 and send the instructions to the processor 1401.

[0472] In some embodiments, the interface circuits 1402 perform the communication steps S2101 of sending and / or receiving in the above methods, and the processor 1401 performs other steps.

[0473] In some embodiments, the terms interface circuit, interface, transceiver pin, and transceiver can be replaced with each other.

[0474] In some embodiments, chip 1400 also includes one or more memories 1403 for storing instructions. Optionally, all or part of memory 1403 can be external to chip 1400.

[0475] The disclosure also provides a storage medium having stored thereon instructions which, when executed on a communication device 1300, cause the communication device 1300 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but this is not a limitation, as it can also be a storage medium readable by other apparatus. Optionally, the storage medium can be a non-transitory storage medium, but this is not a limitation, as it can also be a transitory storage medium.

[0476] The disclosure also provides a program product which, when executed by a communication device 1300, causes the communication device 1300 to perform any of the above methods. Optionally, the program product is a computer program product.

[0477] The disclosure also provides a computer program which, when executed on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method, characterized in that: The method is performed by a first core network device, and the method includes: During the execution of the terminal attachment process, a first message is sent to the second core network device, where the first message is used to determine the authorization result of the terminal for the storage and forwarding service operation. The terminal attachment process is an attachment process under the storage and forwarding service operation.

2. The method according to claim 1, characterized in that The method further comprises: receiving the terminal subscription information sent by the second core network device, and determining, based on the terminal subscription information, an authorization result of the terminal for the store-and-forward service operation; or, Receive the authorization result sent by the second core network device.

3. The method according to claim 2, characterized in that The method further comprises: In response to the terminal being authorized to perform the store-and-forward service operation, sending a second message to the second core network device, where the second message is used to indicate the return of the terminal identity authentication information used to continue the attachment process; receiving the identity authentication information sent by the second core network device, and continuing the terminal attachment process; or, In response to the terminal not being authorized to perform the store-and-forward service operation, stopping the attach process of the terminal.

4. The method according to claim 1, wherein The first message is also used to instruct the second core network device to return the terminal identity authentication information used to continue the attachment process.

5. The method according to claim 4, characterized in that The method further comprises: Receiving terminal identity authentication information and terminal subscription information sent by the second core network device; The terminal contract information is used to determine the authorization result of the terminal for the store-and-forward service operation; Based on the terminal contract information, an authorization result of the terminal to perform a store-and-forward service operation is determined.

6. The method according to claim 5, characterized in that The method further comprises: In response to the terminal being authorized to perform the store-and-forward service operation, continuing the terminal attachment process based on the terminal identity authentication information; or, In response to the terminal not being authorized to perform the store-and-forward service operation, stopping the attach process of the terminal.

7. The method according to claim 4, characterized in that The method further comprises: Receive the terminal identity authentication information and / or the terminal authorization result for the storage and forwarding service operation sent by the second core network device.

8. The method according to claim 7, characterized in that The method further comprises: In response to receiving the identity authentication information and the authorization result sent by the second core network device, and the authorization result indicating that the terminal is authorized to perform the store-and-forward service operation, continuing the attachment process of the terminal based on the identity authentication information; or, In response to receiving the authorization result sent by the second core network device, and the authorization result indicating that the terminal is not authorized to perform the store-and-forward service operation, the attachment process of the terminal is stopped.

9. The method according to claim 3, 6 or 8, characterized in that The process of continuing the attachment of the terminal includes: sending a third message to the terminal, wherein the third message is used to instruct the terminal to return terminal identity authentication information used to continue the attachment process; or, The process of stopping the attachment of the terminal includes: A fourth message is sent to the terminal, where the fourth message is used to instruct the first core network device to reject the attachment of the terminal.

10. A communication method, characterized in that: The method is performed by a second core network device, and the method includes: Receive a first message sent by a first core network device, where the first message is used to determine the authorization result of the terminal for the storage and forwarding service operation. The first message is sent by the first core network device during the terminal's attachment process, and the terminal's attachment process is an attachment process under the storage and forwarding service operation.

11. The method according to claim 10, characterized in that The method further comprises: Sending the terminal subscription information to the first core network device; or, Based on the terminal contract information, determine the authorization result and send the authorization result to the first core network device.

12. The method according to claim 11, characterized in that The method further comprises: receiving a second message sent by the first core network device, where the second message is sent by the first core network device in response to the terminal being authorized to perform a store-and-forward service operation; Send identity authentication information to the first core network device.

13. The method according to claim 10, characterized in that The first message is also used to instruct the second core network device to return the terminal identity authentication information used to continue the attachment process.

14. The method according to claim 13, characterized in that The method further comprises: The terminal identity authentication information and terminal subscription information are sent to the first core network device.

15. The method according to claim 13, characterized in that The method further comprises: Determine the authorization result of the terminal for the store-and-forward service operation based on the terminal contract information; The authorization result and / or terminal identity authentication information is sent to the first core network device.

16. The method according to claim 15, characterized in that The sending the authorization result and / or terminal identity authentication information to the first core network device includes: In response to the terminal being authorized to perform the store-and-forward service operation, sending the authorization result and the terminal identity authentication information to the first core network device; or, In response to the terminal not being authorized to perform the store-and-forward service operation, the authorization result is sent to the first core network device to stop the attachment process.

17. A communication method, characterized in that: The method is performed by an access network device, and the method includes: During the execution of the terminal attachment process, forwarding a third message sent by the first core network device, the third message being used to instruct the terminal to return terminal identity authentication information used to continue the attachment process; or forwarding a fourth message sent by the first core network device, the fourth message being used to instruct the first core network device to reject the terminal attachment; The attachment process of the terminal is an attachment process under a store-and-forward service operation.

18. The method according to claim 17, characterized in that The third message is sent by the first core network device in response to the terminal being authorized to perform the store-and-forward service operation; the fourth message is sent by the first core network device in response to the terminal not being authorized to perform the store-and-forward service operation.

19. A communication method, characterized in that: The method is executed by a terminal, and includes: During the execution of the terminal attachment process, receiving a third message forwarded by the access network device, wherein the third message is used to instruct the terminal to return the terminal identity authentication information used to continue the attachment process; or receiving a fourth message forwarded by the access network device, where the fourth message is used to instruct the first core network device to reject attachment of the terminal; The attachment process of the terminal is an attachment process under a store-and-forward service operation.

20. The method according to claim 19, characterized in that The receiving a third message forwarded by the access network device includes: Returning the terminal identity authentication information used to continue the attachment process to continue the attachment process; The receiving of the fourth message forwarded by the access network device includes: stopping the attachment process.

21. A communication method, characterized in that: The method comprises: The first core network device sends a first message to the second core network device during an attachment process of the terminal, where the first message is used to determine an authorization result of the terminal for a store-and-forward service operation, where the attachment process of the terminal is an attachment process under the store-and-forward service operation; The second core network device receives the first message sent by the first core network device; The authorization result is used by the first core network device to send a third message or a fourth message to the terminal; The access network device forwards the third message or the fourth message sent by the first core network device; The terminal receives the third message or the fourth message forwarded by the access network device; The third message is used to instruct the terminal to return the terminal identity authentication information used to continue the attachment process; the fourth message is used to instruct the first core network device to reject the terminal's attachment.

22. A core network device, characterized in that: include: The transceiver module is used to send a first message to the second core network device during the execution of the terminal's attachment process. The first message is used to determine the terminal's authorization result for the storage and forwarding service operation. The terminal's attachment process is an attachment process under the storage and forwarding service operation.

23. A core network device, characterized in that: include: The transceiver module is configured to receive a first message sent by a first core network device, wherein the first message is used to determine whether the terminal has a storage and forwarding service. The authorization result of the service operation, the first message is sent by the first core network device during the attachment process of the terminal, and the attachment process of the terminal is an attachment process under the storage and forwarding service operation.

24. An access network device, characterized in that: include: a transceiver module configured to, during the execution of the terminal attachment process, forward a third message sent by the first core network device, the third message being used to instruct the terminal to return terminal identity authentication information used to continue the attachment process; or forward a fourth message sent by the first core network device, the fourth message being used to instruct the first core network device to reject the terminal attachment; Wherein, the attachment process of the terminal is an attachment process under a store-and-forward service operation; The third message or the fourth message is determined by the first core network device based on the authorization result of the terminal for the storage and forwarding service operation.

25. A terminal, characterized in that: include: a transceiver module, configured to receive, during the execution of the terminal attachment process, a third message forwarded by the access network device, wherein the third message is used to instruct the terminal to return the terminal identity authentication information used to continue the attachment process; or receiving a fourth message forwarded by the access network device, where the fourth message is used to instruct the first core network device to reject attachment of the terminal; The third message or the fourth message is determined by the first core network device based on the authorization result of the terminal for the store-and-forward service operation; The attachment process of the terminal is an attachment process under a store-and-forward service operation.

26. A core network device, characterized in that: include: one or more processors; The processor is configured to execute the communication method according to any one of claims 1 to 9.

27. A core network device, characterized in that: include: one or more processors; The processor is configured to execute the communication method according to any one of claims 10 to 16.

28. An access network device, characterized in that: include: one or more processors; The processor is configured to execute the communication method according to any one of claims 17 to 18.

29. A terminal, characterized in that: include: one or more processors; The processor is configured to execute the communication method according to any one of claims 19 to 20.

30. A communication system, characterized in that: include: A first core network device, a second core network device, an access network device, and a terminal, wherein the first core network device is configured to implement the communication method described in any one of claims 1-9, the second core network device is configured to implement the communication method described in any one of claims 10-16, the access network device is configured to implement the communication method described in any one of claims 17-18, and the terminal is configured to implement the communication method described in any one of claims 19-20.

31. A storage medium, characterized in that include: The storage medium stores instructions, and when the instructions are executed on the communication device, the communication device executes the communication method according to any one of claims 1 to 9 or 10 to 16 or 17 to 18 or 19 to 20.

32. A program product, characterized in that include: A computer program, which, when executed by a communication device, causes the communication device to perform the communication method according to any one of claims 1 to 9, 10 to 16, 17 to 18, or 19 to 20.

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