Information transmission method, device, equipment, medium and program product

Abstract

The invention relates to an information transmission method and device, equipment, a medium and a program product, and relates to the field of communication. The method comprises the following steps: an SMSF network element receives memory recovery information of user equipment (UE) sent by an AMF network element, and sends the memory recovery information to a UDM network element. Wherein the memory recovery information indicates that the UE reports to the AMF network element under the condition that the short message transmission fails and the memory is recovered. By adopting the method, the timeliness of receiving the memory recovery information of the UE by the UDM network element can be improved under the condition that the memory of the user terminal is recovered.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an information transmission method, device, equipment, medium and program product. Background Art

[0002] In a service-oriented SMS system, if the memory of a user equipment (UE) is full, the SMS transmission of the UE will fail.

[0003] In order to allow the UE to resume SMS retransmission, the 3rd Generation Partnership Project (3GPP) standard defines a process in which the Unified Data Management (UDM) network element triggers SMS retransmission after receiving UE memory recovery information.

[0004] However, in the related art, there is a problem that the UDM network element cannot receive the UE memory recovery information in time. Summary of the invention

[0005] The embodiments of the present application provide an information transmission method, apparatus, device, medium and program product, which improve the timeliness of the UDM network element receiving the memory recovery information of the user equipment.

[0006] In a first aspect, an embodiment of the present application provides an information transmission method, which is applied to an SMSF network element. The method includes:

[0007] Receive the UE's memory recovery information sent by the AMF network element; the memory recovery information indicates that the UE reports to the AMF network element when the SMS transmission fails and the memory is restored;

[0008] Send memory recovery information to the UDM network element.

[0009] In one of the embodiments, sending memory recovery information to the UDM network element includes:

[0010] According to the memory recovery information, the memory status information of the UE in the UDM network element is updated.

[0011] In one of the embodiments, before receiving the memory recovery information of the UE sent by the AMF network element, the method further includes:

[0012] Send a subscription instruction to the AMF network element. The subscription instruction is used to instruct the AMF network element to send the UE's memory recovery information.

[0013] In one of the embodiments, the memory recovery information is used to instruct the UDM network element to send the memory recovery information to the SMS exchange center network element to restore the SMS transmission service of the UE.

[0014] In one of the embodiments, the short message switching center network element includes a short message service routing mobile switching center SMS-GMSC network element and a short message interworking mobile switching center SMS-IWMSC network element.

[0015] In a second aspect, an embodiment of the present application provides an information transmission method, which is applied to an AMF network element, and the method includes:

[0016] Receive memory recovery information sent by UE; memory recovery information is generated when UE fails to transmit SMS and recovers memory;

[0017] Send memory recovery information to the SMSF network element to instruct the SMSF network element to send memory recovery information to the UDM network element.

[0018] In one of the embodiments, before receiving the memory recovery information sent by the UE, the method further includes:

[0019] Receive a subscription instruction sent by the SMSF network element; the subscription instruction is used to instruct the UE's memory recovery information to be sent to the SMSF network element.

[0020] In one of the embodiments, the memory recovery information is used to instruct the UDM network element to send the memory recovery information to the SMS exchange center network element to restore the SMS transmission service of the UE.

[0021] In one of the embodiments, the short message switching center network element includes a short message service routing mobile switching center SMS-GMSC network element and a short message interworking mobile switching center SMS-IWMSC network element.

[0022] In a third aspect, an embodiment of the present application provides an information transmission method, which is applied to a UDM network element. The method includes:

[0023] Receive the memory recovery information of the UE sent by the SMSF network element; the memory recovery information is reported by the UE to the AMF network element when the SMS transmission fails and the memory is restored, and is used to instruct the AMF network element to send the memory recovery information to the SMSF network element.

[0024] In one embodiment, the method further comprises:

[0025] The memory recovery information is sent to the SMS exchange center network element according to the memory recovery information to restore the SMS transmission service of the UE.

[0026] In one of the embodiments, the short message switching center network element includes a short message service routing mobile switching center SMS-GMSC network element and a short message interworking mobile switching center SMS-IWMSC network element.

[0027] In a fourth aspect, an embodiment of the present application provides an information transmission device, the device comprising:

[0028] The first receiving module is used to receive the memory recovery information of the UE sent by the AMF network element; the memory recovery information indicates that the UE reports to the AMF network element when the SMS transmission fails and the memory is restored;

[0029] The first sending module is used to send memory recovery information to the UDM network element.

[0030] In a fifth aspect, an embodiment of the present application provides an information transmission device, the device comprising:

[0031] The second receiving module is used to receive the memory recovery information sent by the UE; the memory recovery information is generated when the UE fails to transmit the short message and recovers the memory;

[0032] The second sending module is used to send memory recovery information to the SMSF network element to instruct the SMSF network element to send memory recovery information to the UDM network element.

[0033] In a sixth aspect, an embodiment of the present application provides an information transmission device, the device comprising:

[0034] The third receiving module is used to receive the memory recovery information of the UE sent by the SMSF network element; the memory recovery information is reported by the UE to the AMF network element when the SMS transmission fails and the memory is restored, and is used to instruct the AMF network element to send the memory recovery information to the SMSF network element.

[0035] In a seventh aspect, an embodiment of the present application provides a communication device, the device comprising a receiver and a transmitter,

[0036] The receiver is used to receive the memory recovery information of the UE sent by the AMF network element; the memory recovery information indicates that the UE reports to the AMF network element when the SMS transmission fails and the memory is restored;

[0037] The transmitter is used to send memory recovery information to the UDM network element.

[0038] In an eighth aspect, an embodiment of the present application provides a communication device, the device comprising a receiver and a transmitter,

[0039] The receiver is used to receive memory recovery information sent by the UE; the memory recovery information is generated when the UE fails to transmit a short message and recovers the memory;

[0040] The transmitter is used to send memory recovery information to the SMSF network element to instruct the SMSF network element to send the memory recovery information to the UDM network element.

[0041] In a ninth aspect, an embodiment of the present application provides a communication device, the device comprising a receiver,

[0042] The receiver is used to receive the memory recovery information of the UE sent by the SMSF network element; the memory recovery information is reported by the UE to the AMF network element when the SMS transmission fails and the memory is restored, and is used to instruct the AMF network element to send the memory recovery information to the SMSF network element.

[0043] In a tenth aspect, the embodiments of the present application further provide a computer-readable storage medium, wherein a computer program is stored thereon, and when the computer program is executed by a processor, the steps of the method in any one of the embodiments of the first to third aspects above are implemented.

[0044] In an eleventh aspect, the embodiments of the present application further provide a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the method in any one of the embodiments of the first to third aspects are implemented.

[0045] The above-mentioned information transmission method, apparatus, equipment, medium and program product, the SMSF network element receives the memory recovery information of the UE sent by the AMF network element, and sends the memory recovery information to the UDM network element. Among them, the memory recovery information indicates that the UE reports to the AMF network element when the SMS transmission fails and the memory is restored. It is equivalent to establishing an information transmission channel including the UE, the AMF network element, the SMSF network element and the UDM network element in the embodiment of the present application, so that when the UE SMS transmission fails and the memory is restored, the UE can report the memory recovery information to the UDM network element through the AMF network element and the SMSF network element in turn. Such an information transmission method improves the timeliness of the UDM network element receiving the memory recovery information of the UE to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 An application environment diagram of an information transmission method in an embodiment;

[0047] Figure 2 is a flow chart of an information transmission method in one embodiment;

[0048] Figure 3 is a flow chart of an information transmission method in another embodiment;

[0049] Figure 4 is a flow chart of an information transmission method in another embodiment;

[0050] Figure 5 is a signaling interaction flow chart of an information transmission method in an embodiment;

[0051] Figure 6is a structural block diagram of an information transmission device in an embodiment;

[0052] Figure 7 is a structural block diagram of an information transmission device in another embodiment;

[0053] Figure 8 is a structural block diagram of an information transmission device in another embodiment;

[0054] Fig. 9 is an internal structure diagram of a communication device in one embodiment;

[0055] Fig.10 is an internal structure diagram of a communication device in another embodiment;

[0056] Fig.11 FIG. 4 is a diagram showing the internal structure of a communication device in another embodiment. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0058] An information transmission method, apparatus, device, medium and program product provided in the embodiments of the present application can be applied to application scenarios where the user terminal fails to transmit text messages when the memory is full and the memory is restored. It can also be used in scenarios where other memory failures cause text message transmission failures and the memory is restored.

[0059] like Figure 1 As shown, Figure 1A schematic diagram of an application scenario of an information transmission method provided in an embodiment of the present application. The application scenario includes a short message exchange center network element 100, a unified data management function (UDM) network element 200, a short message service function (SMSF) network element 300, an access and mobility management function (AMF) network element 400, and a user equipment (UE) 500. Among them, the network connection between the SMS switching center network element 100 and the unified data management function network element 200 is used for the unified data management function network element 200 to transmit information to the SMS switching center network element 100; the network connection between the unified data management function network element 200 and the short message service function network element 300 is used for the short message service function network element 300 to transmit information to the unified data management function network element 200; the short message service function network element 300 provides services to the access and mobility management function network element 400 based on the interface of the Nsmsf service; the access and mobility management function network element 400 is connected to the user terminal 500, and the user terminal 500 reports memory recovery information to the access and mobility management function network element 400.

[0060] The short message switching center network element 100 may be a mobile switching center (MSC) network element with a short message function, and may include a short message service gateway mobile switching center (SMS-GMSC) network element and / or a short message interworking mobile switching center network element (SMS-IWMSC).

[0061] The unified data management function network element 200 is responsible for the management of user identification, contract data, authentication data, and user service network element registration management.

[0062] The short message service function network element 300 is responsible for providing SMS function processing for the 5G network, including SMS registration, relay, caching, routing and other processing.

[0063] The access and mobility management function network element 400 is responsible for UE identity authentication, authorization, registration, mobility management and connection management.

[0064] The user terminal 500 may be a wireless terminal, which may be a device that provides voice and / or other service data connectivity to the user, or a handheld device with wireless connection function, or other processing equipment connected to a wireless modem. The wireless terminal may communicate with one or more core networks via a radio access network (Radio Access Network, referred to as RAN). The wireless terminal may be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges language and / or data with the radio access network. The wireless terminal may also be referred to as a system, a subscriber unit (Subscriber Unit), a subscriber station (Subscriber Station), a mobile station (Mobile Station), a mobile station (Mobile), a remote station (Remote Station), a remote terminal (Remote Terminal), an access terminal (Access Terminal), a user agent (User Agent), a user device (User Device or User Equipment), which is not limited here. It should be noted that the number of the user terminal 500 may be one or more.

[0065] In the service-based SMS system (SBI-based SMS), a full UE memory may cause SMS transmission failure. When the UE memory is available again, the network needs to be notified and trigger the process of retransmitting the SMS.

[0066] However, the existing 3GPP standard defines a process for triggering SMS retransmission after the UDM network element receives a notification of UE memory recovery information, but does not specify a process for how the UDM network element obtains the UE memory recovery information.

[0067] Taking into account the lack of information transmission channel between the UDM network element and the UE, resulting in the UDM network element being unable to receive the UE memory recovery information in a timely manner, an embodiment of the present application provides an information transmission method, in which the AMF network element sends the UE's memory recovery information to the SMSF network element, and then the SMSF network element sends the UE's memory recovery information to the UDM network element, which improves the timeliness of the UDM network element obtaining the UE memory recovery information to a certain extent.

[0068] It should be noted that the beneficial effects or technical problems solved by the embodiments of the present application are not limited to this one, and may also be other implicit or related problems. For details, please refer to the description of the following embodiments. It should be emphasized that in order to simply and clearly describe the information transmission method in the embodiments of the present application, a user terminal is used as an example in the following embodiments.

[0069] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0070] In one embodiment, Figure 2 FIG. 1 is a flow chart of an information transmission method, which is described by taking the method applied to SMSF network elements as an example. Figure 2 As shown, the method includes:

[0071] S201, receiving the memory recovery information of the UE sent by the AMF network element; the memory recovery information indicates that the UE reports to the AMF network element when the SMS transmission fails and the memory is restored.

[0072] The memory recovery information is information generated when the UE recovers its memory after a short message transmission fails due to a memory problem, and specifically may be a memory recovery event reported by the UE based on the memory recovery.

[0073] In one of the scenarios, the UE's memory exceeds the operating load, which may cause SMS transmission failure. Then, when the UE's memory is cleared, that is, when the memory is restored, the UE will generate memory recovery information.

[0074] In another scenario, a failure in the UE's memory may cause SMS transmission failure. Then, when the UE's memory is updated, that is, when the memory is restored, the UE will generate memory recovery information.

[0075] In the field of communications, there is usually a situation where a 5G core network element, such as an AMF network element, provides services to multiple UEs at the same time. Based on this, in the embodiment of the present application, the memory recovery information generated by the UE will carry the UE identifier in addition to the UE's own memory recovery information to identify the UE. The embodiment of the present application does not restrict the form and content of the identifier, etc., on the premise that the UE identifier can uniquely identify the UE.

[0076] In the 5G network, the AMF network element and the UE can be connected through the N1 interface, which is the signaling interface between the UE and the AMF network element. It is essentially a logical interface and there is no physical interface. Through the N1 interface, the memory recovery information reported by the UE can be transmitted to the AMF network element. Since the AMF network element is the core network element in the 5G core network, it is equivalent to transmitting the memory recovery information reported by the UE to the 5G core network through the N1 interface, so that the 5G core network can trigger the SMS retransmission instruction in time according to the memory recovery information to restore the UE's SMS transmission service.

[0077] Of course, in addition to receiving the memory recovery information sent by the UE through the N1 interface, the AMF network element can also be connected through other links. In the embodiment of the present application, when the AMF network element can receive the memory recovery information reported by the UE, the connection method between the AMF network element and the UE is not restricted.

[0078] It should be emphasized that the AMF network element, as the network element for UE to access the 5G core network, is responsible for UE identity authentication, mobility connection management and other functions, but does not have the function of directly responding to the UE for the memory recovery information of the UE. In other words, the AMF network element connects the memory recovery information reported by the UE to the 5G network, and the acquisition of specific response information requires the AMF network element to continue to transmit relevant information to other core network elements in the 5G network until it is transmitted to the core network element that can realize management feedback to the UE, so as to realize service management of the UE.

[0079] In an embodiment of the present application, when the AMF network element receives memory recovery information reported by the UE, it is necessary to further send the information to the SMSF network element.

[0080] Optionally, the SMSF network element and the AMF network element are connected via a Namf service, and the SMSF network element obtains the memory recovery information reported by the UE by calling the Namf service interface. In the embodiment of the present application, when the SMSF network element can receive the memory recovery information sent by the AMF network element, there is no restriction on the connection method between the AMF network element and the SMSF network element.

[0081] Taking memory recovery information as a memory recovery event as an example, the interaction process between the AMF network element and the SMSF network element is explained: after the AMF network element receives the memory recovery information reported by the UE, it then sends the UE's memory recovery information to the SMSF network element.

[0082] S202: Send memory recovery information to the UDM network element.

[0083] In the 3GPP standard, it is defined that after receiving the memory recovery information of the UE, the UDM network element triggers the UE's SMS retransmission process to restore the UE's SMS transmission service.

[0084] Based on this, the information transmission channel between the UE element and the UDM network element can be opened up, so that the UE can transmit the memory recovery information to the UDM network element through the information transmission channel, thereby improving the timeliness of the UDM network element receiving the memory recovery information, and then enabling the UDM network element to initiate SMS retransmission in a timely and effective manner, thereby improving the transmission efficiency of the UE SMS service.

[0085] In one embodiment, by opening the information transmission channel of "UE-AMF network element-SMSF network element-UDM network element", when the AMF network element receives the memory recovery information sent by the UE, the AMF network element promptly forwards the memory recovery information to the UDM network element through the SMSF network element, so that the UDM network element can obtain the UE's memory recovery information in a timely manner.

[0086] Among them, for the transmission process of the "UE-AMF network element-SMSF network element" channel, please refer to the description of the aforementioned S201.

[0087] The transmission process of the "SMSF network element-UDM network element" channel can be carried out through signaling interaction, and can also be achieved by the SMSF network element updating the memory status information of the UE in the UDM network element according to the memory recovery information.

[0088] In one embodiment, when the SMSF network element receives the memory recovery information, the memory status information of the UE in the UDM network element may be updated according to the memory recovery information.

[0089] Exemplarily, the memory recovery information includes the UE identifier and the current memory state of the UE. The SMSF network element determines the UE consistent with the identifier from the UDM network element, and modifies the memory state of the UE in the UDM network element to the current memory state of the UE.

[0090] In an embodiment of the present application, a short message service function SMSF network element receives memory recovery information of a user terminal UE sent by an access and mobility management function AMF network element, and sends the memory recovery information to a unified data management function UDM network element. Among them, the memory recovery information indicates that the UE reports to the AMF network element when the SMS transmission fails and the memory is restored. This is equivalent to establishing an information transmission channel including UE, AMF network element, SMSF network element and UDM network element in an embodiment of the present application, so that when the UE SMS transmission fails and the memory is restored, the UE can report the memory recovery information to the UDM network element through the AMF network element and the SMSF network element in turn. Such an information transmission method improves the timeliness of the UDM network element receiving the memory recovery information of the UE to a certain extent.

[0091] It can be seen from the above embodiments that the information transmission method is based on opening up the information transmission channel between the AMF network element and the UDM network element, and in this information transmission channel, it involves the content of the AMF network element transmitting information to the UDM network element through the SMSF network element, and naturally, it also involves the connection path between the AMF network element and the SMSF network element. Based on this, the following is an example to illustrate a feasible way to open up the information transmission channel of "SMSF network element-AMF network element".

[0092] In one embodiment, before receiving the memory recovery information of the UE sent by the AMF network element, the method further includes:

[0093] Send a subscription instruction to the AMF network element. The subscription instruction is used to instruct the AMF network element to send the UE's memory recovery information.

[0094] Before receiving the memory recovery information sent by the UE, the SMSF network element can add a subscription function for the Event Exposure service, and subscribe to the UE memory recovery information from the AMF network element by sending a subscription instruction to the AMF network element to instruct the AMF network element to report the UE's memory recovery information to the SMSF network element.

[0095] Correspondingly, the AMF network element can add a notification function for the event exposure service, and provide the event exposure service to the SMSF network element based on the subscription instruction sent by the SMSF network element, that is, sending the received UE memory recovery information to the SMSF network element.

[0096] Still taking the memory recovery information as a memory recovery event as an example, the SMSF network element can call the Namf service interface to subscribe to the event exposure service from the AMF network element. Then, when the AMF network element receives the memory recovery event of the UE, it calls the Namf service interface to send the memory recovery event to the SMSF network element.

[0097] In the embodiment of the present application, by adding the subscription function of the SMSF network element and the notification function of the AMF network element, an information transmission channel is established between the SMSF network element and the AMF network element to facilitate the real-time transmission of memory recovery information between the two, thereby improving the transmission efficiency of the memory recovery information.

[0098] In the above embodiment, the step of the UDM network element receiving the memory recovery information of the UE is described. On this basis, the UDM network element can also trigger the UE's SMS retransmission process based on the memory recovery information to restore the UE's SMS transmission service. Based on this, the step of the UDM network element restoring the SMS transmission service is described below through an embodiment.

[0099] In one embodiment, the memory recovery information is used to instruct the UDM network element to send the memory recovery information to the SMS exchange center network element to restore the SMS transmission service of the UE.

[0100] In one embodiment, the short message switching center network element refers to a mobile switching center that serves short messages, including a short message service routing mobile switching center SMS-GMSC network element and a short message interworking mobile switching center SMS-IWMSC network element.

[0101] Among them, the SMS service routing mobile switching center network element is a mobile switching center (MSC) network element with network management function, serving the short messages of mobile terminal (MT) type, and specifically is an inbound switch for receiving short messages sent by the short message center (SMC). The short message interworking mobile switching center network element is an MSC network element with network interaction function, serving the short messages of mobile origin (MO) type. In the actual communication process, the short message interworking mobile switching center network element is an outbound switch that can receive short messages from the public land mobile network (PLMN) and send short messages to the corresponding SMC.

[0102] The UDM network element sends memory recovery information to the SMS switching center network element to trigger the SMS switching center network element to trigger the UE's SMS retransmission instruction, thereby restoring the UE's SMS transmission service.

[0103] Optionally, the UDM network element may transmit the received memory recovery information to the SMS service routing mobile switching center network element, and the SMS service routing mobile switching center network element triggers the UE's SMS retransmission instruction to restore the SMS transmission service of the UE.

[0104] Still taking the memory recovery information as the memory recovery event as an example, the process of restoring the UE's SMS transmission service is explained: the UDM network element can transmit the received memory recovery event to the SMS service routing mobile switching center network element, and the SMS service routing mobile switching center network element triggers the UE's SMS retransmission instruction to restore the UE's SMS transmission service.

[0105] In an embodiment of the present application, memory recovery information is sent to the SMS exchange center through the UDM network element to trigger the UE's SMS retransmission process, thereby restoring the UE's SMS transmission service, so that the UDM network element can promptly learn of changes in the UE's memory status, promptly and effectively initiate SMS retransmission, and improve the transmission efficiency of the SMS service.

[0106] The above is an explanation of the relevant embodiments on the side of the SMSF network element as the execution subject. On this basis, the embodiment of the present application also provides embodiments corresponding to the above process with the AMF network element and the UDM network element as the execution subject.

[0107] Below, the relevant embodiments of the information transmission method with the AMF network element as the execution entity are described.

[0108] In one embodiment, Figure 3 A flow chart of an information transmission method is shown in FIG. Figure 1 The access and mobility management function network element in the example is used to illustrate. Figure 3 As shown, the method comprises the following steps:

[0109] S301, receiving memory recovery information sent by UE; the memory recovery information is generated when the UE fails to transmit a short message and recovers the memory.

[0110] The memory recovery information is information generated when the UE recovers its memory after a short message transmission fails due to a memory problem, and specifically may be a memory recovery event reported by the UE based on the memory recovery.

[0111] In one of the scenarios, the UE's memory exceeds the operating load, which may cause SMS transmission failure. Then, when the UE's memory is cleared, that is, when the memory is restored, the UE will generate memory recovery information.

[0112] In another scenario, a failure in the UE's memory may cause SMS transmission failure. Then, when the UE's memory is updated, that is, when the memory is restored, the UE will generate memory recovery information.

[0113] In the field of communications, there is usually a situation where a 5G core network element, such as an AMF network element, provides services to multiple terminal devices at the same time. Based on this, in the embodiment of the present application, the memory recovery information generated by the UE, in addition to the UE memory recovery information, also carries the UE identifier to identify the UE. Under the premise that the UE identifier can uniquely identify the UE, the embodiment of the present application does not restrict the form and content of the identifier.

[0114] In the 5G network, the AMF network element and the UE can be connected through the N1 interface, which is the signaling interface between the UE and the AMF network element. It is essentially a logical interface and there is no physical interface. Through the N1 interface, the memory recovery information reported by the UE can be transmitted to the AMF network element. Since the AMF network element is the core network element in the 5G core network, it is equivalent to transmitting the memory recovery information reported by the UE to the 5G core network through the N1 interface, so that the 5G core network can trigger the SMS retransmission instruction in time according to the memory recovery information and restore the UE's SMS transmission service.

[0115] Of course, in addition to receiving the memory recovery information sent by the UE through the N1 interface, the AMF network element can also be connected through other links. In the embodiment of the present application, when the AMF network element can receive the memory recovery information reported by the UE, the connection method between the AMF network element and the UE is not restricted.

[0116] Taking the memory recovery information as the memory recovery event as an example, an achievable interaction process between the AMF network element and the UE is explained: the AMF network element can send a first instruction to the corresponding UE, and the first instruction is used to subscribe to the memory recovery event from the UE. In this way, when a memory recovery event occurs in the UE, the UE can promptly notify the AMF network element of the memory recovery event.

[0117] S302: Send memory recovery information to the SMSF network element to instruct the SMSF network element to send memory recovery information to the UDM network element.

[0118] It should be emphasized that the AMF network element, as the network element for UE to access the 5G core network, is responsible for UE identity authentication, mobility connection management and other functions, but does not have the function of directly responding to the UE for the memory recovery information of the UE. In other words, the AMF network element connects the memory recovery information reported by the UE to the 5G network, and the acquisition of specific response information requires the AMF network element to continue to transmit relevant information to other core network elements in the 5G network until it is transmitted to the core network element that can realize management feedback to the UE, so as to realize service management of the UE.

[0119] In the 3GPP standard, it is defined that after receiving the memory recovery information of the UE, the UDM network element triggers the UE's SMS retransmission process to restore the UE's SMS transmission service.

[0120] Based on this, the information transmission channel between the AMF network element and the UDM network element can be opened up, so that the AMF network element can transmit the received memory recovery information to the UDM network element through the information transmission channel, thereby improving the timeliness of the UDM network element receiving the memory recovery information, and then enabling the UDM network element to initiate SMS retransmission in a timely and effective manner, thereby improving the transmission efficiency of UE SMS services.

[0121] Optionally, the AMF network element and the UDM network element can be connected through an N8 interface, and specifically, the memory recovery information can be transmitted from the AMF network element to the UDM network element through the N8 interface.

[0122] In one embodiment, by opening up the information transmission channel of "AMF network element-SMSF network element-UDM network element", when the AMF network element receives the memory recovery information sent by the UE, the AMF network element promptly forwards the memory recovery information to the UDM network element through the SMSF network element, so that the UDM network element can obtain the memory recovery information of the UE in a timely manner.

[0123] Among them, for the transmission process of the "AMF network element-SMSF network element" channel, the transparent transmission method or the signaling interaction method can be adopted.

[0124] The transmission process of the "SMSF network element-UDM network element" channel can be carried out through signaling interaction, and can also be achieved by the SMSF network element updating the memory status information of the UE in the UDM network element according to the memory recovery information.

[0125] In an embodiment of the present application, the AMF network element receives memory recovery information sent by the UE, and sends the memory recovery information to the SMSF network element to instruct the SMSF network element to send the memory recovery information to the UDM network element. Among them, the memory recovery information represents the information generated by the UE when the SMS transmission fails and the memory is restored. It is equivalent to establishing an information transmission channel including the UE, the AMF network element, the SMSF network element and the UDM network element in the embodiment of the present application, so that when the UE SMS transmission fails and the memory is restored, the UE can report the memory recovery information to the unified data management network element through the AMF network element and the SMSF network element in turn. Such information transmission method can not only enable the UDM network element to receive the memory recovery information, but also improve the timeliness of the UDM network element receiving the memory recovery information of the user device to a certain extent.

[0126] It can be seen from the above embodiments that the information transmission method is based on opening up the information transmission channel between the AMF network element and the UDM network element, and in this information transmission channel, it involves the content of the AMF network element transmitting information to the UDM network element through the SMSF network element, and naturally, it also involves the connection path between the AMF network element and the SMSF network element. Based on this, the following is an example to illustrate a feasible way to open up the information transmission channel of "SMSF network element-AMF network element".

[0127] In one embodiment, before receiving the memory recovery information sent by the UE, the method further includes:

[0128] Receive a subscription instruction sent by the SMSF network element; the subscription instruction is used to instruct the UE's memory recovery information to be sent to the SMSF network element.

[0129] Before receiving the memory recovery information sent by the UE, the SMSF network element can add a subscription function for the Event Exposure service, and subscribe to the UE memory recovery information from the AMF network element by sending a subscription instruction to the AMF network element to instruct the AMF network element to report the UE's memory recovery information to the SMSF network element.

[0130] Correspondingly, the AMF network element can add a notification function for the event exposure service, and provide the event exposure service to the SMSF network element based on the subscription instruction sent by the SMSF network element, that is, sending the received UE memory recovery information to the SMSF network element.

[0131] Still taking the memory recovery information as a memory recovery event as an example, the SMSF network element can call the Namf service interface to subscribe to the event exposure service from the AMF network element. Then, when the AMF network element receives the memory recovery event of the UE, it calls the Namf service interface to send the memory recovery event to the SMSF network element.

[0132] In the embodiment of the present application, by adding the subscription function of the SMSF network element and the notification function of the AMF network element, an information transmission channel is established between the SMSF network element and the AMF network element to facilitate the real-time transmission of memory recovery information between the two, thereby improving the transmission efficiency of the memory recovery information.

[0133] In the above embodiment, the step of the UDM network element receiving the memory recovery information of the UE is described. On this basis, the UDM network element can also trigger the UE's SMS retransmission process based on the memory recovery information to restore the UE's SMS transmission service. Based on this, the step of the UDM network element restoring the SMS transmission service is described below through an embodiment.

[0134] In one embodiment, the memory recovery information is used to instruct the UDM network element to send the memory recovery information to the SMS exchange center network element to restore the SMS transmission service of the UE.

[0135] In one embodiment, the short message switching center network element refers to a mobile switching center that serves short messages, including an SMS-GMSC network element and an SMS-IWMSC network element.

[0136] Among them, the SMS-GMSC network element is a mobile switching center (MSC) network element with network management function, serving short messages of mobile terminal (MT) type, and is specifically an inbound switch for receiving short messages sent by the short message center (SMC). The SMS-IWMSC network element is an MSC network element with network interaction function, serving short messages of mobile origin (MO) type. In the actual communication process, the short message intercommunication mobile switching center network element is an outbound switch that can receive short messages from the public land mobile network (PLMN) and send short messages to the corresponding SMC.

[0137] The UDM network element sends memory recovery information to the SMS switching center network element to trigger the SMS switching center network element to trigger the UE's SMS retransmission instruction, thereby restoring the UE's SMS transmission service.

[0138] Optionally, the UDM network element may transmit the received memory recovery information to the SMS service routing mobile switching center network element, and the SMS service routing mobile switching center network element triggers the UE's SMS retransmission instruction to restore the SMS transmission service of the UE.

[0139] Still taking the memory recovery information as the memory recovery event as an example, the process of restoring the UE's SMS transmission service is explained: the UDM network element can transmit the received memory recovery event to the SMS-GMSC network element, and the SMS-GMSC network element triggers the UE's SMS retransmission instruction to restore the UE's SMS transmission service.

[0140] In an embodiment of the present application, memory recovery information is sent to the SMS exchange center through the UDM network element to trigger the UE's SMS retransmission process, thereby restoring the UE's SMS transmission service, so that the UDM network element can promptly learn of changes in the UE's memory status, promptly and effectively initiate SMS retransmission, and improve the transmission efficiency of the SMS service.

[0141] The above is a description of the relevant embodiments on the side of the AMF network element as the execution subject. On this basis, the embodiment of the present application also provides an embodiment corresponding to the above process with the UDM network element as the execution subject. Below, the relevant embodiments of the information transmission method with the UDM network element as the execution subject are described.

[0142] In one embodiment, Figure 4 As shown, an information transmission method is provided, which is applied to a UDM network element, and the method includes:

[0143] S401, receiving the memory recovery information of the UE sent by the SMSF network element; the memory recovery information is reported by the UE to the AMF network element when the SMS transmission fails and the memory is restored, and is used to instruct the AMF network element to send the memory recovery information to the SMSF network element.

[0144] The memory recovery information is information generated when the UE recovers its memory after a short message transmission fails due to a memory problem, and specifically may be a memory recovery event reported by the UE based on the memory recovery.

[0145] In one of the scenarios, the UE's memory exceeds the operating load, which may cause SMS transmission failure. Then, when the UE's memory is cleared, that is, when the memory is restored, the UE will generate memory recovery information.

[0146] In another scenario, a failure in the UE's memory may cause SMS transmission failure. Then, when the UE's memory is updated, that is, when the memory is restored, the UE will generate memory recovery information.

[0147] In the field of communications, there is usually a situation where a 5G core network element, such as an AMF network element, provides services to multiple terminal devices at the same time. Based on this, in the embodiment of the present application, the memory recovery information generated by the UE, in addition to the UE memory recovery information, also carries the UE identifier to identify the UE. Under the premise that the UE identifier can uniquely identify the UE, the embodiment of the present application does not restrict the form and content of the identifier.

[0148] In the 5G network, the AMF network element and the UE can be connected through the N1 interface, which is the signaling interface between the UE and the AMF network element. It is essentially a logical interface and there is no physical interface. Through the N1 interface, the memory recovery information reported by the UE can be transmitted to the AMF network element. Since the AMF network element is the core network element in the 5G core network, it is equivalent to transmitting the memory recovery information reported by the UE to the 5G core network through the N1 interface, so that the 5G core network can trigger the SMS retransmission instruction in time according to the memory recovery information to restore the UE's SMS transmission service.

[0149] Of course, in addition to receiving the memory recovery information sent by the UE through the N1 interface, the AMF network element can also be connected through other links. In the embodiment of the present application, when the AMF network element can receive the memory recovery information reported by the UE, the connection method between the AMF network element and the UE is not restricted.

[0150] It should be emphasized that the AMF network element, as the network element for UE to access the 5G core network, is responsible for UE identity authentication, mobility connection management and other functions, but does not have the function of directly responding to the UE for the memory recovery information of the UE. In other words, the AMF network element connects the memory recovery information reported by the UE to the 5G network, and specifically needs to transmit it to other core network elements in the 5G network until it is transmitted to the core network element that can realize management feedback to the UE, thereby realizing service management of the UE.

[0151] In the 3GPP standard, it is defined that after receiving the memory recovery information of the UE, the UDM network element triggers the UE's SMS retransmission process to restore the UE's SMS transmission service.

[0152] Based on this, the information transmission channel between the AMF network element and the UDM network element can be opened up, so that the AMF network element can transmit the received memory recovery information to the UDM network element through the transmission channel in a timely and effective manner, so that the UDM network element can initiate SMS retransmission in a timely and effective manner according to the memory recovery information, thereby improving the transmission efficiency of UE SMS services.

[0153] In one embodiment, by opening up the information transmission channel of "AMF network element-SMSF network element-UDM network element", when the AMF network element receives the memory recovery information sent by the UE, the AMF network element promptly forwards the memory recovery information to the UDM network element through the SMSF network element, so that the UDM network element can obtain the memory recovery information of the UE in a timely manner.

[0154] Taking the memory recovery information as a memory recovery event as an example, the steps for the UDM network element to receive the memory recovery event are explained: when a memory recovery event occurs in the UE, the UE reports the memory recovery event to the AMF network element, and then the AMF network element transmits the memory recovery event to the UDM network element through the SMSF network element.

[0155] In an embodiment of the present application, the UDM network element receives the memory recovery information of the UE sent by the SMSF network element. The memory recovery information is reported by the UE to the AMF network element when the SMS transmission fails and the memory is restored, and is used to instruct the AMF network element to send the memory recovery information of the UE to the SMSF network element. This is equivalent to establishing an information transmission channel including the UE, the AMF network element, the SMSF network element and the UDM network element in the embodiment of the present application, so that when the UE SMS transmission fails and the memory is restored, the UE can report the memory recovery information to the unified data management network element through the AMF network element and the SMSF network element in turn. Such information transmission method can not only enable the UDM network element to receive the memory recovery information, but also improve the timeliness of the UDM network element receiving the memory recovery information of the user device to a certain extent.

[0156] In one embodiment, the method further comprises:

[0157] The memory recovery information is sent to the SMS exchange center network element according to the memory recovery information to restore the SMS transmission service of the UE.

[0158] In one embodiment, the short message switching center network element includes an SMS-GMSC network element and an SMS-IWMSC network element.

[0159] Since all the implementation principles and detailed processes in the aforementioned embodiment with the UDM network element as the execution body, as well as the technical effects that can be achieved are the same as those in the aforementioned embodiment with the SMSF network element and the AMF network element as the execution body, for the sake of brevity and clarity, the above embodiments will not be described one by one, and the implementation process and implementation effect of each embodiment can be found in the description of the aforementioned embodiments.

[0160] In one embodiment, Figure 5 A signaling interaction flow chart for information transmission is provided. Taking a UE as an example, Figure 5The signaling interaction flow chart shown involves UE, AMF network element, SMSF network element, UDM network element and SMS-GMSC network element for short message service routing mobile switching center. In the scenario where the UE has insufficient memory, resulting in failure of UE SMS transmission, the information transmission method provided in the embodiment of the present application includes the following steps:

[0161] S501, the SMSF network element subscribes to memory recovery information from the AMF network element.

[0162] Exemplarily, the SMSF network element calls Namf_Event Exposure Subscribe to send a subscription instruction to the AMF network element, which is used to instruct the AMF network element to send the memory recovery information of the UE.

[0163] S502, UE reports memory recovery information.

[0164] S503, the AMF network element sends memory recovery information to the SMSF network element.

[0165] After the AMF network element receives the memory recovery message from the UE, it calls Namf_Event Exposure_Notify to notify the SMSF network element of the UE's memory recovery message.

[0166] S504, the SMSF network element modifies the UE context in the UDM network element.

[0167] The SMSF network element calls Nudm_UECM_Update to modify the UE context in the UDM network element, which may specifically be to change the UE memory information in the UDM to send memory recovery information to the UDM network element.

[0168] S505, the UDM network element sends memory recovery information to the SMS-GMSC network element.

[0169] The UDM network element sends a memory recovery message to the SMS-GMSC to notify the SMS-GMSC network element that "UE memory is available for SMS transmission (UE_MEMORY_AVAILABLE_FOR_SMS)".

[0170] When the SMS-GMSC network element receives the memory recovery information of the UE sent by the UDM network element, it triggers the SMS retransmission instruction of the UE to restore the SMS transmission service of the UE.

[0171] In an embodiment of the present application, the SMSF network element receives the memory recovery information of the user terminal UE sent by the AMF network element, and sends the memory recovery information to the UDM network element. Among them, the memory recovery information indicates that the UE reports to the AMF network element when the SMS transmission fails and the memory is restored. It is equivalent to establishing an information transmission channel including the UE, the AMF network element, the SMSF network element and the UDM network element in the embodiment of the present application, so that when the UE SMS transmission fails and the memory is restored, the UE can report the memory recovery information to the UDM network element through the AMF network element and the SMSF network element in turn. Such an information transmission method improves the timeliness of the UDM network element receiving the UE's memory recovery information to a certain extent. .

[0172] It should be understood that although Figure 2-5 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 2-5 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0173] In one embodiment, Figure 6 As shown, an information transmission device 600 is provided, comprising: a first receiving module 601 and a first sending module 602, wherein:

[0174] The first receiving module 601 is used to receive the memory recovery information of the UE sent by the AMF network element; the memory recovery information indicates that the UE reports to the AMF network element when the SMS transmission fails and the memory is restored;

[0175] The first sending module 602 is used to send memory recovery information to the UDM network element.

[0176] In one embodiment, the first sending module 602 includes an information updating unit, configured to update the memory status information of the UE in the UDM network element according to the memory recovery information.

[0177] In one embodiment, the information transmission device 600 further includes an instruction sending module, which is used to send a subscription instruction to the AMF network element, and the subscription instruction is used to instruct the AMF network element to send memory recovery information of the UE.

[0178] In one embodiment, the memory recovery information is used to instruct the UDM network element to send the memory recovery information to the SMS exchange center network element to restore the SMS transmission service of the UE.

[0179] In one embodiment, the short message switching center network element includes a short message service routing mobile switching center SMS-GMSC network element and a short message interworking mobile switching center SMS-IWMSC network element.

[0180] In one embodiment, Figure 7 As shown, an information transmission device 700 is provided, including: a second receiving module 701 and a second sending module 702, wherein:

[0181] The second receiving module 701 is used to receive memory recovery information sent by the UE; the memory recovery information is generated when the UE fails to transmit a short message and recovers the memory;

[0182] The second sending module 702 is used to send memory recovery information to the SMSF network element to instruct the SMSF network element to send the memory recovery information to the UDM network element.

[0183] In one embodiment, the information transmission device 700 further includes an instruction receiving module, which is used to receive a subscription instruction sent by an SMSF network element; the subscription instruction is used to instruct to send the memory recovery information of the UE to the SMSF network element.

[0184] In one embodiment, the memory recovery information is used to instruct the UDM network element to send the memory recovery information to the SMS exchange center network element to restore the SMS transmission service of the UE.

[0185] In one embodiment, the short message switching center network element includes an SMS-GMSC network element and an SMS-IWMSC network element.

[0186] In one embodiment, Figure 8 As shown, an information transmission device 800 is provided, including a third receiving module 801, for receiving memory recovery information of the UE sent by the SMSF network element; the memory recovery information is reported by the UE to the AMF network element when the SMS transmission fails and the memory is restored, and is used to instruct the AMF network element to send memory recovery information to the SMSF network element.

[0187] In one embodiment, the information transmission device 800 further includes a service recovery module, which is used to send memory recovery information to the SMS exchange center network element according to the memory recovery information to restore the SMS transmission service of the UE.

[0188] In one embodiment, the short message switching center network element includes an SMS-GMSC network element and an SMS-IWMSC network element.

[0189] For the specific definition of the information transmission device, please refer to the definition of the information transmission method above, which will not be repeated here. Each module in the above-mentioned information transmission device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0190] In one embodiment, a schematic diagram of the structure of a communication device is provided. Fig. 9 900 is a structural diagram of a communication device 900 provided in an embodiment of the present application. The communication device 900 may be an SMSF network element device, including: a receiver 901, a memory 902, a processor 903, at least one communication bus 904 and a transmitter 905. The communication bus 904 is used to realize the communication connection between the components. The memory 902 may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk memory. Various programs may be stored in the memory 902 to complete various processing functions and implement the method steps of this embodiment. In this embodiment, the transmitter 905 may be a radio frequency processing module or a baseband processing module in the SMSF network element device, and the receiver 901 may also be a radio frequency processing module or a baseband processing module in the SMSF network element device. The transmitter 905 and the receiver 901 can be integrated together to realize a transceiver. The transmitter 905 and the receiver 901 can be coupled to the processor 903, and they can realize the receiving or sending action under the instruction or control of the processor 903.

[0191] In the embodiment of the present application, the receiver 901 is used to receive the memory recovery information of the UE sent by the AMF network element; the memory recovery information indicates that the UE reports to the AMF network element when the SMS transmission fails and the memory is restored;

[0192] The transmitter 905 is used to send memory recovery information to the UDM network element.

[0193] In one embodiment, the processor 903 is configured to update the memory status information of the UE in the UDM network element according to the memory recovery information.

[0194] In one embodiment, the transmitter 905 is also used to send a subscription instruction to the AMF network element, and the subscription instruction is used to instruct the AMF network element to send the memory recovery information of the UE.

[0195] In one embodiment, the memory recovery information is used to instruct the UDM network element to send the memory recovery information to the SMS exchange center network element to restore the SMS transmission service of the UE.

[0196] In one embodiment, the short message switching center network element includes a short message service routing mobile switching center SMS-GMSC network element and a short message interworking mobile switching center SMS-IWMSC network element.

[0197] In one embodiment, a schematic diagram of the structure of a communication device is provided. Fig.10 It is a structural diagram of a communication device 1000 provided in an embodiment of the present application. The communication device 1000 may be an AMF network element device, including: a receiver 1001, a memory 1002, a processor 1003, at least one communication bus 1004 and a transmitter 1005. The communication bus 1004 is used to realize the communication connection between the components. The memory 1002 may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk memory. Various programs can be stored in the memory 1002 to complete various processing functions and implement the method steps of this embodiment. In this embodiment, the transmitter 1005 can be a radio frequency processing module or a baseband processing module in an AMF network element device, and the receiver 1001 can also be a radio frequency processing module or a baseband processing module in an AMF network element device. The transmitter 1005 and the receiver 1001 can be integrated together to realize a transceiver. The transmitter 1005 and the receiver 1001 can be coupled to the processor 1003, which can realize the receiving or sending action under the instruction or control of the processor 1003.

[0198] In the embodiment of the present application, the receiver 1001 is used to receive memory recovery information sent by the UE; the memory recovery information indicates that the UE generates when the SMS transmission fails and the memory is recovered;

[0199] The transmitter 1005 is used to send memory recovery information to the SMSF network element to instruct the SMSF network element to send memory recovery information to the UDM network element.

[0200] In one embodiment, the receiver 1001 is further used to receive a subscription instruction sent by an SMSF network element; the subscription instruction is used to instruct to send the memory recovery information of the UE to the SMSF network element.

[0201] In one embodiment, the memory recovery information is used to instruct the UDM network element to send the memory recovery information to the SMS exchange center network element to restore the SMS transmission service of the UE.

[0202] In one embodiment, the short message switching center network element includes an SMS-GMSC network element and an SMS-IWMSC network element.

[0203] In one embodiment, a schematic diagram of the structure of a communication device is provided. Fig.11It is a structural diagram of a communication device 1100 provided in an embodiment of the present application. The communication device 1100 may be a UDM network element device, including: a receiver 1101, a memory 1102, a processor 1103, at least one communication bus 1104 and a transmitter 1105. The communication bus 1104 is used to realize the communication connection between the components. The memory 1102 may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk memory. Various programs can be stored in the memory 1102 to complete various processing functions and implement the method steps of this embodiment. In this embodiment, the transmitter 1105 can be a radio frequency processing module or a baseband processing module in the UDM network element device, and the receiver 1101 can also be a radio frequency processing module or a baseband processing module in the UDM network element device. The transmitter 1105 and the receiver 1101 can be integrated together to realize a transceiver. The transmitter 1105 and the receiver 1101 can be coupled to the processor 1103, which can realize the receiving or sending action under the instruction or control of the processor 1103.

[0204] In an embodiment of the present application, the receiver 1101 is used to receive memory recovery information of the UE sent by the SMSF network element; the memory recovery information is reported by the UE to the AMF network element when the SMS transmission fails and the memory is restored, and is used to instruct the AMF network element to send memory recovery information to the SMSF network element.

[0205] In one embodiment, the processor 1103 is configured to send memory recovery information to a short message exchange center network element according to the memory recovery information to recover the short message transmission service of the UE.

[0206] In one embodiment, the short message switching center network element includes an SMS-GMSC network element and an SMS-IWMSC network element.

[0207] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, any method step in each embodiment of the information transmission method in the above embodiments is implemented.

[0208] In one embodiment, a computer program product is provided, including a computer program, which, when executed by a processor, implements any method step in each embodiment of the information transmission method in the foregoing embodiments.

[0209] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0210] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0211] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An information transmission method, characterized in that: Applied to a short message service function SMSF network element, the method comprises: Receiving memory recovery information of a user terminal UE sent by an access and mobility management function AMF network element; the memory recovery information indicates that the UE reports to the AMF network element when SMS transmission fails and memory is restored; The memory recovery information is sent to a unified data management function UDM network element.

2. The method according to claim 1, characterized in that: The sending the memory recovery information to the UDM network element includes: According to the memory recovery information, the memory status information of the UE in the UDM network element is updated.

3. The method according to claim 1, characterized in that: Before the AMF network element sends the memory recovery information of the UE, the method further includes: Send a subscription instruction to the AMF network element, where the subscription instruction is used to instruct the AMF network element to send memory recovery information of the UE.

4. The method according to any one of claims 1 to 3, characterized in that: The memory recovery information is used to instruct the UDM network element to send the memory recovery information to the SMS exchange center network element to restore the SMS transmission service of the UE.

5. The method according to claim 4, characterized in that The short message switching center network element includes a short message service routing mobile switching center SMS-GMSC network element and a short message interworking mobile switching center SMS-IWMSC network element.

6. An information transmission method, characterized in that: Applied to an AMF network element, the method comprises: Receiving memory recovery information sent by the UE; the memory recovery information is generated by the UE when the SMS transmission fails and the memory is recovered; The memory recovery information is sent to the SMSF network element to instruct the SMSF network element to send the memory recovery information to the UDM network element.

7. The method according to claim 6, characterized in that Before receiving the memory recovery information sent by the UE, the method further includes: Receive a subscription instruction sent by the SMSF network element; the subscription instruction is used to instruct to send the memory recovery information of the UE to the SMSF network element.

8. The method according to claim 6 or 7, characterized in that: The memory recovery information is used to instruct the UDM network element to send the memory recovery information to the SMS exchange center network element to restore the SMS transmission service of the UE.

9. The method according to claim 3, characterized in that: The short message switching center network element includes an SMS-GMSC network element and an SMS-IWMSC network element.

10. An information transmission method, characterized in that: Applied to a UDM network element, the method includes: Receive memory recovery information of the UE sent by the SMSF network element; the memory recovery information is reported by the UE to the AMF network element when the SMS transmission fails and the memory is restored, and is used to instruct the AMF network element to send the memory recovery information to the SMSF network element.

11. The method according to claim 10, characterized in that The method further comprises: The memory recovery information is sent to a short message exchange center network element according to the memory recovery information to restore the short message transmission service of the UE.

12. The method according to claim 11, characterized in that The short message switching center network element includes an SMS-GMSC network element and an SMS-IWMSC network element.

13. An information transmission device, characterized in that: The device comprises: A first receiving module is used to receive the memory recovery information of the UE sent by the AMF network element; the memory recovery information indicates that the UE reports to the AMF network element when the SMS transmission fails and the memory is restored; The first sending module is used to send the memory recovery information to the UDM.

14. An information transmission device, characterized in that: The device comprises: A second receiving module is used to receive memory recovery information sent by the UE; the memory recovery information is generated by the UE when the SMS transmission fails and the memory is restored; The second sending module is used to send the memory recovery information to the SMSF network element to instruct the SMSF network element to send the memory recovery information to the UDM network element.

15. An information transmission device, characterized in that: The device comprises: The third receiving module is used to receive the memory recovery information of the UE sent by the SMSF network element; the memory recovery information is reported by the UE to the AMF network element when the SMS transmission fails and the memory is restored, and is used to instruct the AMF network element to send the memory recovery information to the SMSF network element.

16. A communication device, characterized in that: Including receiver and transmitter, The receiver is used for memory recovery information of the UE sent by the AMF network element; the memory recovery information indicates that the UE reports to the AMF network element when the SMS transmission fails and the memory is restored; The transmitter is used to send the memory recovery information to the UDM network element.

17. A communication device, characterized in that: Including receiver and transmitter, The receiver is used to receive memory recovery information sent by the UE; the memory recovery information is generated by the UE when the SMS transmission fails and the memory is recovered; The transmitter is used to send the memory recovery information to the SMSF network element to instruct the SMSF network element to send the memory recovery information to the UDM network element.

18. A communication device, characterized in that: Including receiver, The receiver is used to receive the memory recovery information of the UE sent by the SMSF network element; the memory recovery information is reported by the UE to the AMF network element when the SMS transmission fails and the memory is restored, and is used to instruct the AMF network element to send the memory recovery information to the SMSF network element.

19. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 12 are implemented.

20. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 12 are implemented.

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