Method for minimizing service interruption and related equipment

Abstract

The invention provides a method for minimizing service interruption and related equipment, and relates to the technical field of wireless communication. The method comprises the following steps: the terminal equipment sends a registration request message to a first network element, wherein the registration request message carries indication information that the terminal equipment supports MINT; and receiving a registration acceptance message sent by the first network element, the registration acceptance message being generated according to subscription data of the terminal device sent by the second network element to the first network element, the subscription data of the terminal device comprising PLMN information used in the disaster situation and PLMN associated access type information used in the disaster situation. According to the invention, the continuity of terminal data services can be fully guaranteed, and wide-area emergency communication services can be developed.

Description

Background Art

[0002] The terminal device and the network can support Minimization of Service Interruption (MINT). When a disaster situation occurs in the Public Land Mobile Network (PLMN) determined by the terminal device, the terminal device can obtain services from the PLMN that provides disaster roaming services. In the traditional terrestrial communication scenario, a disaster occurring at the same location may cause all terrestrial PLMNs to be unavailable.

[0003] With the development of 6th Generation mobile networks (6G) services and users in the future, the integration of space, air, and ground will become the research direction for the collaborative work of future satellite networks and terrestrial communication networks.

[0004] In the space-air-ground integrated scenario, the terminal device has a Non-Terrestrial Network Connection (NTN connection) and can select different satellite access methods in different orbits. In the space-air-ground integrated scenario, when a disaster situation occurs in the PLMN determined by the terminal device, how to quickly determine the backup PLMN has become a technical problem to be solved urgently.

[0005] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0006] The present disclosure provides a method for minimizing service interruption and related devices, which at least overcome to some extent the problem of low efficiency in determining the backup PLMN in the existing space-air-ground integrated scenario.

[0007] Other features and advantages of the present disclosure will become apparent through the following detailed description, or will be learned in part through the practice of the present disclosure.

[0008] According to one aspect of the present disclosure, there is provided a method for minimizing service interruption, which is applied to a terminal device. The method includes: sending a registration request message to a first network element, where the registration request message carries indication information that the terminal device supports Minimization of Service Interruption (MINT); receiving a registration acceptance message sent by the first network element, where the registration acceptance message is generated according to the subscription data of the terminal device sent by a second network element to the first network element, and the subscription data of the terminal device includes Public Land Mobile Network (PLMN) information used in a disaster situation and PLMN-associated access type information used in a disaster situation.

[0009] In one embodiment of the present disclosure, the registration request message includes an initial registration request, or a mobile and periodic registration request.

[0010] In one embodiment of the present disclosure, the PLMN information used in the disaster situation and the PLMN-associated access type information used in the disaster situation have the same number of indexes and correspond one to one.

[0011] In one embodiment of the present disclosure, the access type in the PLMN-associated access type information used in the disaster situation includes at least one of ground, low earth orbit, medium earth orbit, and high earth orbit.

[0012] In one embodiment of the present disclosure, the method also includes: receiving a configuration update message sent by the first network element, wherein the configuration update message includes updated PLMN information used in disaster situations and / or PLMN associated access type information used in disaster situations, and the configuration update message is triggered by the second network element.

[0013] In one embodiment of the present disclosure, the method also includes: if the terminal device cannot connect to the current serving PLMN and cannot establish an emergency protocol data unit (PDU) session, determining the PLMN used in the disaster situation in the target track based on the PLMN information used in the disaster situation and the access type information associated with the PLMN used in the disaster situation; and establishing a connection with the PLMN used in the disaster situation in the target track.

[0014] In one embodiment of the present disclosure, determining the PLMN used in a disaster situation in a target track based on the PLMN information used in the disaster situation and the access type information associated with the PLMN used in the disaster situation includes: determining the target access type based on the access capability and service characteristics of the terminal device; and determining the PLMN used in a disaster situation in the target track from the PLMN information used in the disaster situation and the access type information associated with the PLMN used in the disaster situation based on the target access type.

[0015] In one embodiment of the present disclosure, after establishing a connection with the PLMN used in a disaster situation in the target track, the method further includes: switching to the current serving PLMN after disaster recovery of the current serving PLMN.

[0016] According to another aspect of the present disclosure, a method for minimizing service interruption is provided, which is applied to a first network element, and the method includes: receiving a registration request message sent by a terminal device, the registration request message carrying indication information that the terminal device supports minimization of service interruption MINT; according to the registration request message, obtaining the subscription data of the terminal device from the second network element, the subscription data including public land mobile network PLMN information used in disaster situations and PLMN-associated access type information used in disaster situations; sending a registration acceptance message to the terminal device, wherein the registration acceptance message is generated based on the subscription data of the terminal device.

[0017] In one embodiment of the present disclosure, the PLMN information used in the disaster situation and the PLMN-associated access type information used in the disaster situation have the same number of indexes and correspond one to one.

[0018] In one embodiment of the present disclosure, the access type in the PLMN-associated access type information used in the disaster situation includes at least one of ground, low earth orbit, medium earth orbit, and high earth orbit.

[0019] In one embodiment of the present disclosure, the method also includes: receiving a configuration update message sent by the second network element, the configuration update message including updated PLMN information used in disaster situations and / or PLMN associated access type information used in disaster situations; and sending the configuration update message to the terminal device.

[0020] According to another aspect of the present disclosure, a method for minimizing service interruption is provided, which is applied to a second network element, and the method includes: receiving a registration request message of a terminal device sent by a first network element, the registration request message of the terminal device carrying indication information that the terminal device supports minimization of service interruption MINT; obtaining subscription data of the terminal device according to the registration request message of the terminal device, the subscription data including public land mobile network PLMN information used in disaster situations and PLMN-associated access type information used in disaster situations; sending the subscription data of the terminal device to the first network element, so that the first network element generates a registration acceptance message according to the subscription data of the terminal device.

[0021] In one embodiment of the present disclosure, the number of indexes in the PLMN information used in the disaster situation and the PLMN-associated access type information used in the disaster situation are the same and correspond one to one.

[0022] In one embodiment of the present disclosure, the access type in the PLMN-associated access type information used in the disaster situation includes at least one of ground, low earth orbit, medium earth orbit, and high earth orbit.

[0023] In one embodiment of the present disclosure, obtaining the subscription data of the terminal device according to the registration request message of the terminal device includes: determining the PLMN information used by the terminal device in a disaster situation and the PLMN associated access type information in the disaster situation according to the local configuration.

[0024] In one embodiment of the present disclosure, the method also includes: if the PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation of the terminal device changes, triggering a configuration update; sending the updated PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation of the terminal device to the first network element, so that the first network element sends the updated PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation to the terminal device.

[0025] According to another aspect of the present disclosure, a device for minimizing service interruption is also provided, which is applied to a terminal device, and the device includes: a first sending module, used to send a registration request message to a first network element, the registration request message carries indication information that the terminal device supports minimization of service interruption MINT; a first receiving module, used to receive a registration acceptance message sent by the first network element, wherein the registration acceptance message is generated based on the subscription data of the terminal device sent by the second network element to the first network element, and the subscription data of the terminal device includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations.

[0026] According to another aspect of the present disclosure, a device for minimizing service interruption is also provided, which is applied to a first network element, and the device includes: a second receiving module, used to receive a registration request message sent by a terminal device, the registration request message carrying indication information that the terminal device supports minimization of service interruption MINT; a data acquisition module, used to obtain the subscription data of the terminal device from the second network element according to the registration request message, the subscription data including public land mobile network PLMN information used in disaster situations and PLMN-associated access type information used in disaster situations; a second sending module, used to send a registration acceptance message to the terminal device, wherein the registration acceptance message is generated based on the subscription data of the terminal device.

[0027] According to another aspect of the present disclosure, a device for minimizing service interruption is also provided, which is applied to a second network element, and the device includes: a third receiving module, used to receive a registration request message of a terminal device sent by a first network element, the registration request message of the terminal device carries indication information that the terminal device supports minimization of service interruption MINT; a data determination module, used to obtain the contract data of the terminal device according to the registration request message of the terminal device, the contract data including public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations; a third sending module, used to send the registration acceptance message to the first network element.

[0028] According to another aspect of the present disclosure, a system for minimizing service interruption is provided, including a terminal device, a first network element and a second network element, wherein: the terminal device is used to send a registration request message to the first network element, the registration request message carries indication information that the terminal device supports minimization of service interruption MINT; receive a registration acceptance message sent by the first network element, wherein the registration acceptance message is generated based on the subscription data of the terminal device sent by the second network element to the first network element, and the subscription data of the terminal device includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations; the first network element is used to receive a registration request message sent by the terminal device; obtain the subscription data of the terminal device from the second network element according to the registration request message; send a registration acceptance message to the terminal device, wherein the registration acceptance message is generated based on the subscription data of the terminal device; the second network element is used to receive a registration request message of the terminal device sent by the first network element; obtain the subscription data of the terminal device according to the registration request message of the terminal device; and send the subscription data of the terminal device to the first network element.

[0029] According to yet another aspect of the present disclosure, an electronic device is provided, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the above-mentioned method of minimizing service interruption by executing the executable instructions.

[0030] According to another aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method for minimizing service interruption is implemented.

[0031] According to another aspect of the present disclosure, a computer program product is provided, including a computer program or computer instructions, wherein the computer program or the computer instructions are loaded and executed by a processor to enable a computer to implement any of the above-mentioned methods for minimizing service interruption.

[0032] In the implementation manner of the present disclosure, the terminal device sends a registration request message to the first network element, the registration request message carries indication information that the terminal device supports service interruption minimization MINT; and receives a registration acceptance message sent by the first network element, wherein the registration acceptance message is generated based on the contract data of the terminal device sent by the second network element to the first network element, and the contract data of the terminal device includes PLMN information used in disaster situations and PLMN associated access type information used in disaster situations. The efficiency of determining the backup PLMN in the present disclosure is improved, and the continuity of the terminal data service can be fully guaranteed, and wide-area emergency communication services can be carried out.

[0033] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0035] Figure 1 A schematic diagram showing a system architecture provided by an embodiment of the present disclosure.

[0036] Figure 2 A flow chart of a method for minimizing service interruption performed by a terminal device provided by an embodiment of the present disclosure is shown.

[0037] Figure 3 A flow chart of a method for minimizing service interruption performed by another terminal device provided by an embodiment of the present disclosure is shown.

[0038] Figure 4 A flow chart of a method for minimizing service interruption performed by another terminal device provided by an embodiment of the present disclosure is shown.

[0039] Figure 5 A flow chart of a method for minimizing service interruption performed by another terminal device provided by an embodiment of the present disclosure is shown.

[0040] Figure 6 A flow chart of a method for minimizing service interruption performed by a first network element provided by an embodiment of the present disclosure is shown.

[0041] Figure 7 A flowchart of a method for minimizing service interruption performed by a second network element provided by an embodiment of the present disclosure is shown.

[0042] Figure 8A flowchart showing an example of a method for minimizing service interruption provided by an embodiment of the present disclosure.

[0043] Fig. 9 A flowchart showing an example of a method for minimizing service interruption provided by an embodiment of the present disclosure.

[0044] Fig.10 A schematic diagram of the structure of a device for minimizing service interruption provided by an embodiment of the present disclosure is shown.

[0045] Fig.11 A schematic structural diagram of another device for minimizing service interruption provided by an embodiment of the present disclosure is shown.

[0046] Fig.12 A schematic structural diagram of another device for minimizing service interruption provided by an embodiment of the present disclosure is shown.

[0047] Fig.13 A schematic diagram of the structure of a system for minimizing service interruption provided by an embodiment of the present disclosure is shown.

[0048] Fig.14 A structural block diagram of an electronic device provided by an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0049] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0050] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0051] The specific implementation of the embodiment of the present disclosure is described in detail below with reference to the accompanying drawings.

[0052] Figure 1 A schematic diagram showing an exemplary system architecture that can be applied to the method for minimizing service interruption according to an embodiment of the present disclosure.

[0053] like Figure 1As shown, the system architecture may include a terminal device 110, a terrestrial access network 120, a core network 130, and a satellite 140. The terminal device 110 may establish a network connection with the core network 130 through the terrestrial access network 120, and the terminal device 110 may also establish a network connection with the satellite 140. The network may be a wireless network.

[0054] According to the capacity, rate, delay and other factors of different networks, the network can be divided into 2G (generation) network, 3G network, 4G network or future evolution network, such as 5G network and 6G network, which are referred to as network or system for short. In the present disclosure, the network includes network equipment, which can be, for example, a wireless access network node; the core network includes core network equipment. Among them, the wireless access network node can also be a ground base station.

[0055] The ground base station can communicate with the core network device and provide communication services to the terminal device 110. The core network device is, for example, a device in the 5G network core network. The core network 130 provides an interface to the data network as a bearer network, provides communication connection, authentication, management, policy control and data service bearing for the terminal device 110. Among them, the core network device may include: Access and Mobility Management Function (AMF), Session Management Function (SMF), Authentication Server Function (AUSF), Policy Control Function (PCF), User Plane Function (UPF) and other network elements.

[0056] The terminal device 110 may be referred to as a user equipment (UE), a mobile terminal, a terminal, a mobile station, etc. The terminal device 110 may be various electronic devices, including but not limited to smart phones, tablet computers, laptop computers, desktop computers, wearable devices, augmented reality devices, virtual reality devices, etc.

[0057] Optionally, the client of the application installed in different terminal devices 110 is the same, or the client of the same type of application based on different operating systems. Based on the different terminal platforms, the specific form of the client of the application can also be different, for example, the application client can be a mobile client, a PC client, etc.

[0058] In the 3GPP standard, the UE and the network can support Minimization of Service Interruption (MINT), which enables the UE to obtain services from the Public Land Mobile Network (PLMN) that provides disaster roaming services when a disaster occurs in the PLMN determined by the UE.

[0059] If the UE supports MINT, after the registration process is completed, the indication of whether the UE enables disaster roaming, the list of PLMNs to be used in disaster situations provided by the Visited Public Land Mobile Network (VPLMN), the disaster roaming waiting range and the disaster return waiting range will be stored in the UE's non-volatile memory and retained when the UE enters the 5GMM-DEREGISTERED state.

[0060] like Figure 1 As shown, when PLMN1 is paralyzed due to a disaster, the ground access network 120 and the core network 130 corresponding to PLMN1 cannot establish a network connection, and the UE can select other PLMNs as PLMN access used in disaster situations, for example Figure 1 PLMN2, PLMN3 or PLMN4 in.

[0061] In the ground communication scenario, a disaster at the same location basically means that all ground PLMNs are unavailable. In the air-ground integrated scenario, if the UE has the capability of non-terrestrial network connection (NTN connection), it can choose different access modes such as high orbit, medium orbit, and low orbit.

[0062] However, in actual situations, high-orbit, medium-orbit, and low-orbit access methods may belong to different operators; even if they access the same operator, the ground and satellite may use different PLMNs. Therefore, in the air-ground integrated scenario, when the PLMN determined by the terminal device encounters a disaster, how to quickly determine the backup PLMN becomes a technical problem that needs to be solved urgently.

[0063] In order to solve at least some of the above technical problems, the present disclosure provides a method for minimizing service interruption, wherein a terminal device sends a registration request message to a first network element, the registration request message carries indication information that the terminal device supports minimization of service interruption MINT; and receives a registration acceptance message sent by the first network element, wherein the registration acceptance message is generated based on the subscription data of the terminal device sent by the second network element to the first network element, and the subscription data of the terminal device includes PLMN information used in disaster situations and PLMN associated access type information used in disaster situations. On the one hand, the present disclosure enables the terminal device to quickly determine the backup PLMN by carrying the PLMN information used in disaster situations and the PLMN associated access type information used in disaster situations in the registration acceptance message, thereby improving the efficiency of determining the backup PLMN, fully guaranteeing the continuity of the terminal data service, and carrying out wide-area emergency communication services; on the other hand, by using the PLMN associated access type information used in disaster situations, different access types can be distinguished, thereby being adaptable to air-ground-ground integrated scenarios and improving the applicability of minimizing service interruption.

[0064] The present exemplary implementation is described in detail below with reference to the accompanying drawings and embodiments.

[0065] First, the present disclosure provides a method for minimizing service interruption performed by a terminal device, which can be performed by any electronic device with computing processing capabilities. For example, the method can be performed by the terminal device, or by the first network element, or by the second network element, or by the interaction between the terminal device, the first network element, and the second network element.

[0066] Figure 2 A flow chart of a method for minimizing service interruption provided by an embodiment of the present disclosure is shown. Figure 2 As shown, the method for minimizing service interruption provided in the embodiment of the present disclosure is applied to a terminal device, and the method mainly includes the following steps: S202: Send a registration request message to the first network element, where the registration request message carries indication information that the terminal device supports minimization of service interruption MINT.

[0067] In one embodiment, the registration request message is used to register the terminal device, and the registration request message may include the identity information and necessary parameters of the terminal device, which are used for identity authentication and resource allocation in the network.

[0068] The registration request message includes an initial registration request, a mobile registration request, or a periodic registration request, wherein the initial registration request refers to the first registration request sent by the terminal device to the network when accessing the network, the mobile registration request can be sent when the terminal device switches between different cells, and the periodic registration request is a periodic registration update.

[0069] The registration request message carries an indication message that the terminal device supports MINT, which means that the first network element and / or the second network element can determine the ability of the terminal device to support MINT based on the registration request message. The above indication message can be a binary value or a Boolean value.

[0070] For example, when the indication message that the terminal device supports MINT carried in the registration request message is 1, it indicates that the terminal device has the ability to support MINT. When the indication message that the terminal device supports MINT carried in the registration request message is 0, it indicates that the terminal device does not have the ability to support MINT.

[0071] It should be noted that the implementation of the technical solution of the present disclosure is based on the premise that the terminal device has the capability to support MINT. For the case where the terminal device does not have the capability to support MINT, the present disclosure will not be expanded.

[0072] S204. Receive a registration acceptance message sent by the first network element, wherein the registration acceptance message is generated based on the subscription data of the terminal device sent by the second network element to the first network element, and the subscription data of the terminal device includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations.

[0073] In one embodiment, when the terminal device supports the MINT capability, the indication information that the terminal device supports MINT is carried in the registration request message, and the registration request message is sent to the first network element. The first network element sends a request to obtain the subscription data of the terminal device to the second network element according to the identity information of the terminal device in the registration request message, and the request for the subscription data may carry the identity information of the terminal device; the second network element returns the subscription data of the terminal device to the first network element, and the subscription data may include the PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation.

[0074] The PLMN information used in disaster situations may include at least one PLMN used in disaster situations, and each PLMN used in a disaster situation is identified by corresponding identification information to distinguish different PLMNs. The PLMN information used in disaster situations may be represented by a PLMN list used in disaster situations, and the PLMN list may record the identification information of each PLMN used in a disaster situation.

[0075] The PLMN associated access type information used in disaster situations includes at least one access type corresponding to the PLMN used in disaster situations. The PLMN associated access type information used in disaster situations may also be represented by a corresponding list.

[0076] The PLMN associated access type information used in a disaster situation has the same number of indexes as the PLMN information used in a disaster situation and has a one-to-one correspondence, that is, one PLMN used in a disaster situation corresponds to one access type.

[0077] The access type in the PLMN-associated access type information used in disaster situations may include at least one of terrestrial, low earth orbit, medium earth orbit, and high earth orbit.

[0078] exist Figure 1 In the system architecture shown, the PLMNs configured for the terminal device include PLMN1~PLMN4, where PLMN1 is the current service PLMN of the terminal device; the PLMNs used in disaster situations include PLMN2~PLMN4, where the access type corresponding to PLMN2 is terrestrial; the access type corresponding to PLMN3 is high orbit, and the access type corresponding to PLMN4 is low orbit. When PLMN1 suffers a disaster, the terminal device can select PLMNs of different access types according to the access capability and service characteristics of the terminal device.

[0079] In the embodiment of the present disclosure, the terminal device sends a registration request message to the first network element, the registration request message carries the indication information that the terminal device supports service interruption minimization MINT; and receives a registration acceptance message sent by the first network element, wherein the registration acceptance message is generated based on the contract data of the terminal device sent by the second network element to the first network element, and the contract data of the terminal device includes the PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation. The efficiency of determining the backup PLMN is improved in the present disclosure, which can fully guarantee the continuity of the terminal data service and can carry out wide-area emergency communication services.

[0080] Figure 3 A flowchart of a method for minimizing service interruption performed by another terminal device provided by an embodiment of the present disclosure is shown. Figure 2 On the basis of the embodiment, after S204, S206 is added to limit the process of the second network element triggering the terminal device configuration update. Figure 3 As shown, in one embodiment, the method for minimizing service interruption of the present disclosure includes S202 to S206, wherein: S206. Receive a configuration update message sent by the first network element, wherein the configuration update message includes updated PLMN information used in disaster situations and / or PLMN-associated access type information used in disaster situations, and the configuration update message is triggered by the second network element.

[0081] It should be noted that the specific implementation of the above S202 to S204 is the same as the specific implementation of S202 to S206 in the aforementioned embodiment, and will not be repeated here.

[0082] In one embodiment, after the terminal device receives the registration acceptance message sent by the first network element, the terminal device is in a connected state, and the second network element can trigger the terminal device configuration update process.

[0083] When the PLMN information used by the terminal device in a disaster situation changes, the second network element can trigger a terminal device configuration update; when the PLMN associated access type information used by the terminal device in a disaster situation changes, the second network element can also trigger a terminal device configuration update; when the PLMN information used in a disaster situation and the corresponding associated access type information change at the same time, the second network element can also trigger a terminal device configuration update.

[0084] The second network element may notify the first network element of the corresponding changed subscription data, where the changed subscription data may include the changed PLMN information used in disaster situations and / or the PLMN-associated access type information used in disaster situations.

[0085] After receiving the changed subscription data sent by the second network element, the first network element generates a configuration update message and sends it to the terminal device.

[0086] In one embodiment, the first network element may send a DL NAS TRANSPORT message to the terminal device, wherein the message type is CONFIGURATION UPDATE COMMAND.

[0087] After receiving the configuration update message, the terminal device returns a confirmation message to the first network element. After receiving the confirmation message from the terminal device, the first network element sends a confirmation message to the second network element.

[0088] In the disclosed embodiment, the terminal device configuration update message is triggered by the second network element to timely notify the terminal device of the change information of the contract data, provide reliable guarantee for minimizing service interruption, and enhance the application prospects of the air-space-ground integrated terminal directly connected to the satellite emergency service.

[0089] Figure 4 A flowchart of a method for minimizing service interruption performed by a terminal device according to another embodiment of the present disclosure is shown. Figure 2 Based on the embodiment, after S204, S208 to S210 are added to limit the standby PLMN interaction of the terminal device. Figure 4 As shown, in one embodiment, the method further includes: S208, if the terminal device cannot connect to the current serving PLMN and cannot establish an emergency protocol data unit (PDU) session, determine the PLMN used in the disaster situation in the target track according to the PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation; S210: Establish a connection with a PLMN used in a disaster situation in the target track.

[0090] It should be noted that the specific implementation of the above S202 to S204 is the same as the specific implementation of S202 to S204 in the aforementioned embodiment, and will not be repeated here.

[0091] When hit by natural disasters such as earthquakes and tsunamis, the communication system provides early warnings and notifications through SIB15 messages, and can broadcast specific information about the disaster area. For example, the SIB15 message can include PLMN / NPN and related indicator information of the disaster-affected area, the disaster area and roaming inbound PLMN / NPN and related indicator information.

[0092] When the terminal device receives a SIB15 message including the current serving PLMN and cannot establish an emergency PDU session, the terminal device can determine the PLMN used in the disaster situation in the target track based on the stored PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation.

[0093] It should be noted that when there are multiple PLMNs used in disaster situations in the target track, one of the multiple PLMNs can be selected as a backup PLMN and random access can be performed. When the above-mentioned backup PLMN cannot be accessed, another PLMN among the multiple PLMNs is selected as the backup PLMN and random access is performed until the selected backup PLMN establishes a connection with the terminal device.

[0094] Once a connection is established with the selected PLMN, no other PLMN will be selected.

[0095] In one embodiment, when there are multiple PLMNs used in disaster situations in the target track, access may also be selected in descending order of signal strength of the PLMNs used in disaster situations.

[0096] In one embodiment, when there are multiple PLMNs used in a disaster situation in the target track, the terminal device may also select access according to the order of PLMN identifiers.

[0097] It should be noted that the method for the terminal device to access the standby PLMN provided in this embodiment is also applicable to Figure 3The configuration update process mentioned in the embodiment, that is, adding S208~S210 after S206, determines the PLMN used in the target track disaster situation according to the updated PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation, and the similarities are not repeated here.

[0098] In an embodiment of the present disclosure, when a terminal device cannot connect to the current serving PLMN and cannot establish an emergency PDU session, the PLMN used in a disaster situation in the target orbit is determined as a backup PLMN for connection based on the PLMN information used in a disaster situation and the access type information associated with the PLMN used in a disaster situation for data interaction. This enables autonomous and controllable data traffic transmission of the terminal device after a disaster occurs, ensures service quality based on the capabilities of the terminal device, and minimizes data service interruptions, thereby enabling emergency services for air-to-ground integrated terminal devices directly connected to satellites.

[0099] Figure 5 A flowchart of a method for minimizing service interruption performed by a terminal device according to another embodiment of the present disclosure is shown. Figure 5 As shown, in one embodiment, the above S208 determines the PLMN used in the target track in the disaster situation according to the PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation, including: S502, determining a target access type according to the access capability and service characteristics of the terminal device; S504: According to the target access type, determine the PLMN used in the disaster situation in the target track from the PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation.

[0100] In S502, the access capability of the terminal device refers to the air-space-ground access capability of the terminal device, for example, the access capability of the terminal device may include the access capability of ground access, low earth orbit, medium earth orbit, etc. The service feature of the terminal device refers to the service type corresponding to the establishment of the emergency PDU session by the terminal device.

[0101] The target access type may be an access type selectable by the terminal device. The target access type may include at least one of ground, low earth orbit, medium earth orbit, and high earth orbit. For example, the target access type of a terminal device may include two access types: low earth orbit and high earth orbit.

[0102] In S504, the target access type can be matched with the access type information associated with the PLMN used in disaster situations, and the PLMN identifier corresponding to the target access type can be determined from the access type information associated with the PLMN used in disaster situations as an alternative PLMN, that is, the PLMN used in disaster situations in the target track is obtained.

[0103] In the embodiment of the present disclosure, the target access type is determined based on the access capability and service characteristics of the terminal device, and the target access type is matched with the access type information associated with the PLMN used in disaster situations and the PLMN information used in disaster situations, so as to quickly determine the PLMN used in disaster situations in the target track and improve the efficiency of minimizing service interruptions.

[0104] In one embodiment, after establishing a connection with the PLMN used in a disaster situation in the target track in S210, the method further includes: switching to the current serving PLMN after the disaster recovery of the current serving PLMN.

[0105] In the disclosed embodiment, after the disaster recovery of the current serving PLMN, the PLMN is switched, so as to provide the terminal device with better service and improve the user experience.

[0106] Figure 6 A flow chart of a method for minimizing service interruption performed by a first network element provided by an embodiment of the present disclosure is shown. Figure 6 As shown, in one embodiment, a method for minimizing service interruption according to an embodiment of the present disclosure is applied to a first network element, and the method includes the following steps: S602, receiving a registration request message sent by a terminal device, where the registration request message carries indication information that the terminal device supports minimization of service interruption MINT; S604. Acquire subscription data of the terminal device from the second network element according to the registration request message, where the subscription data includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations; S606. Send a registration acceptance message to the terminal device, where the registration acceptance message is generated based on the contract data of the terminal device.

[0107] When the terminal device is registering, the first network element receives a registration request message sent by the terminal device. The registration request message carries an indication message that the terminal device supports MINT. The registration request message also includes identification information of the terminal device. The first network element obtains the contract data of the terminal device from the second network element based on the identification information of the terminal device. The second network element returns the contract data of the terminal device to the first network element. The first network element returns the PLMN information used in a disaster situation and the PLMN associated access type information used in a disaster situation to the terminal device in a registration acceptance message, so that the terminal device performs minimized service interruption according to the PLMN information used in a disaster situation and the PLMN associated access type information used in a disaster situation.

[0108] In one embodiment, the number of indexes in the PLMN information used in a disaster situation and the PLMN-associated access type information used in a disaster situation is the same and corresponds one to one.

[0109] In one embodiment, the access type in the PLMN associated access type information used in a disaster situation includes at least one of terrestrial, low earth orbit, medium earth orbit, and high earth orbit.

[0110] In an embodiment of the present disclosure, the terminal device sends an indication information of supporting MINT to the first network element through a registration request message, the first network element negotiates capabilities with the second network element, and the second network element sends the PLMN information used in a disaster situation and the PLMN-associated access type information used in a disaster situation to the terminal device, so that the terminal device saves the above-mentioned PLMN information and the corresponding PLMN-associated access type information, ensuring that service interruptions are minimized when a subsequent disaster occurs, reducing business interruptions of the terminal device, and improving user experience.

[0111] In one embodiment, the method further includes: receiving a configuration update message sent by the second network element, the configuration update message including updated PLMN information used in disaster situations and / or PLMN associated access type information used in disaster situations; and sending the configuration update message to the terminal device.

[0112] After the terminal device is successfully registered and in a connected state, the second network element can trigger the terminal device configuration update process. When the PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation changes, the second network element triggers the terminal device configuration update.

[0113] The second network element notifies the terminal device corresponding to the first network element of the changed subscription data, where the changed subscription data includes a list of PLMNs used in disaster situations and a list of PLMN-associated access types used in disaster situations. The two lists have the same number of indexes and correspond one to one, and the access type includes at least one of ground, low earth orbit, medium earth orbit, and high earth orbit.

[0114] The first network element sends the updated subscription data to the terminal device via a DL NAS TRANSPORT message, and the message type is CONFIGURATION UPDATE COMMAND. The terminal device returns a confirmation to the first network element, and the first network element returns a confirmation to the second network element.

[0115] In the disclosed embodiment, by triggering the terminal device configuration update through the second network element, the latest PLMN information used in disaster situations and / or the PLMN-associated access type information used in disaster situations can be synchronized to the terminal device in real time, ensuring that service interruptions are minimized when subsequent disasters occur, reducing business interruptions of terminal devices, and improving user experience.

[0116] Figure 7 A flow chart of a method for minimizing service interruption performed by a second network element provided by an embodiment of the present disclosure is shown. Figure 7 As shown, in one embodiment, a method for minimizing service interruption provided by an embodiment of the present disclosure is applied to a second network element, and the method mainly includes the following steps: S702: Receive a registration request message of a terminal device sent by a first network element, where the registration request message of the terminal device carries indication information that the terminal device supports minimization of service interruption MINT; S704. Obtain subscription data of the terminal device according to the registration request message of the terminal device, where the subscription data includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations; S706. Send the subscription data of the terminal device to the first network element, so that the first network element generates a registration acceptance message according to the subscription data of the terminal device.

[0117] In one embodiment, the number of indexes in the PLMN information used in a disaster situation and the PLMN-associated access type information used in a disaster situation is the same and corresponds one to one.

[0118] In one embodiment, the PLMN-associated access type information includes at least one of terrestrial, low earth orbit, medium earth orbit, and high earth orbit.

[0119] In one embodiment, the above S704 obtains the subscription data of the terminal device according to the registration request message of the terminal device, including: determining the PLMN information used by the terminal device in the disaster situation and the PLMN associated access type information in the disaster situation according to the local configuration.

[0120] The above local configuration may be an operator policy, a network configuration, or both an operator policy and a network configuration.

[0121] In the disclosed embodiment, the second network element sends PLMN information used in disaster situations and PLMN-associated access type information used in disaster situations to the terminal device based on whether the terminal device has indication information that it supports MINT, thereby ensuring that service interruption is minimized when a subsequent disaster occurs to the terminal device, reducing business interruption of the terminal device and improving user experience.

[0122] In one embodiment, the above method also includes: if the PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation of the terminal device changes, triggering a configuration update; sending the updated PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation of the terminal device to the first network element, so that the first network element sends the updated PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation to the terminal device.

[0123] After successful registration and the UE is in a connected state, the second network element can trigger the terminal device configuration update process. When the PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation changes, the second network element triggers the terminal device configuration update.

[0124] The second network element notifies the terminal device corresponding to the first network element of the changed subscription data, and the changed subscription data includes a list of PLMNs used in disaster situations and a list of PLMN-associated access types used in disaster situations. The two lists have the same number of indexes and correspond one to one, and the access type includes at least one of ground, low earth orbit, medium earth orbit, and high earth orbit.

[0125] The first network element may send the updated subscription data to the UE via a DL NAS TRANSPORT message, and the message type is CONFIGURATION UPDATE COMMAND. The terminal device returns a confirmation to the first network element, and the first network element returns a confirmation to the second network element.

[0126] In the disclosed embodiment, by triggering the terminal device configuration update through the second network element, the latest PLMN information used in disaster situations and / or the PLMN-associated access type information used in disaster situations can be synchronized to the terminal device in real time, ensuring that service interruptions are minimized when subsequent disasters occur, reducing business interruptions of terminal devices, and improving user experience.

[0127] It can be understood that for the terminal device executing the above method, it can also be a chip or chip system set in the terminal device; for the first network element executing the above method, it can also be a chip or chip system set in the first network element; for the second network element executing the above method, it can also be a chip or chip system set in the second network element. This application does not make any specific limitations on this.

[0128] For the terminal device, the first network element and the second network element in the above method, the terminal device may be a UE, the first network element may be an AMF, and the second network element may be a UDM.

[0129] In order to deepen the understanding of the embodiments of the present disclosure, Figure 8 , Fig. 9 A detailed description is given by taking the terminal device as UE, the first network element as AMF, and the second network element as UDM as an example.

[0130] like Figure 8 As shown, the method for minimizing service interruption includes the following steps: S801. The UE sends a registration request message (Registration Request) to the AMF. The registration request message carries the indication information that the terminal device supports MINT. S802. AMF sends a request to UDM to obtain UE's subscription data (Nudm_SDM_GET request). S803, UDM returns the subscription data of UE (Nudm_SDM_GET resporse), where the subscription data of UD includes: List of PLMNs to be uesed in disaster condition, and list of PLMN associated access types used in disaster condition, the two lists have the same number of indexes and correspond one to one. Access types include: ground, low earth orbit, medium earth orbit, high earth orbit, etc.

[0131] S804. AMF sends a registration accept message (Registration Accept) to the UE, where the registration accept message includes a list of PLMNs used in disaster situations and a list of PLMN-associated access types used in disaster situations.

[0132] like Fig. 9 As shown, after successful registration and the UE is in a connected state, UDM can trigger the UE configuration update process, which mainly includes the following steps: S901. When the PLMN list used by the UE in a disaster situation and / or the PLMN-associated access type list used in a disaster situation changes, the UDM triggers a UE parameter update; S902, UDM notifies AMF of the changed subscription data of the corresponding UE (Nudm_SDM_Notification), where the changed subscription data of the UE includes the updated: list of PLMNs used in disaster situations, and list of PLMN-associated access types used in disaster situations; S903. AMF sends the changed subscription data of UE to UE through DL NAS TRANSPORT message, and the message type is CONFIGURATION UPDATE COMMAND. S904. UE returns confirmation (UL NAS TRANSPORT); S905. AMF returns confirmation (Nudm_SDM_Info).

[0133] When the UE cannot connect to the current serving PLMN and cannot establish an emergency PDU session, it can select PLMN access of different tracks according to its own capabilities and service characteristics.

[0134] It should be noted that the above examples are only provided to illustrate the embodiments of the present disclosure and should not be regarded as limiting the scope of protection of the present disclosure. The above steps can also be adjusted in order according to actual needs, and this application does not make specific limitations.

[0135] Based on the same inventive concept, the present disclosure also provides a system for minimizing service interruption, as described in the following embodiments. Since the principle of solving the problem in the system embodiment is similar to that in the above method embodiment, the implementation of this embodiment can refer to the implementation of the above method embodiment, and the repeated parts will not be repeated.

[0136] Fig.10 A schematic diagram of a device for minimizing service interruption provided by an embodiment of the present disclosure is shown. Fig.10 As shown, a device for minimizing service interruption in this embodiment is applied to a terminal device, and the device includes a first sending module 1010 and a first receiving module 1020, wherein: The first sending module 1010 is used to send a registration request message to the first network element, where the registration request message carries indication information that the terminal device supports minimization of service interruption MINT; The first receiving module 1020 is used to receive a registration acceptance message sent by the first network element, wherein the registration acceptance message is generated based on the subscription data of the terminal device sent by the second network element to the first network element, and the subscription data of the terminal device includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations.

[0137] It should be noted that the registration request message includes an initial registration request, or a mobile and periodic registration request.

[0138] It should be noted that the number of indexes in the PLMN information used in a disaster situation and the PLMN-associated access type information used in a disaster situation is the same and corresponds one to one.

[0139] It should be noted that the access type in the PLMN-associated access type information used in disaster situations includes at least one of ground, low earth orbit, medium earth orbit, and high earth orbit.

[0140] In one embodiment, the device also includes a first update module not shown in the accompanying drawings, and the first update module is used to receive a configuration update message sent by the first network element, wherein the configuration update message includes updated PLMN information used in disaster situations and / or PLMN associated access type information used in disaster situations, and the configuration update message is triggered by the second network element.

[0141] In one embodiment, the device also includes a connection module not shown in the accompanying drawings, and the connection module is used to determine the PLMN used in the disaster situation in the target track based on the PLMN information used in the disaster situation and the access type information associated with the PLMN used in the disaster situation if the terminal device cannot connect to the current service PLMN and cannot establish an emergency protocol data unit PDU session; and establish a connection with the PLMN used in the disaster situation in the target track.

[0142] In one embodiment, the connection module is used to determine the target access type based on the access capability and service characteristics of the terminal device; based on the target access type, determine the PLMN used in the disaster situation in the target track from the PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation.

[0143] In one embodiment, the connection module is further configured to, after establishing a connection with the PLMN used in a disaster situation in the target track, switch to the current serving PLMN after the disaster of the current serving PLMN is recovered.

[0144] In the embodiment of the present disclosure, the terminal device sends a registration request message to the first network element, the registration request message carries the indication information that the terminal device supports the service interruption minimization MINT; and receives the registration acceptance message sent by the first network element, the registration acceptance message is generated according to the contract data of the terminal device sent by the second network element to the first network element, and the contract data of the terminal device includes the PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation. The efficiency of determining the backup PLMN in the present disclosure is improved, which can fully guarantee the continuity of the terminal data service and can carry out wide-area emergency communication services.

[0145] Fig.11 A schematic diagram of another device for minimizing service interruption provided by an embodiment of the present disclosure is shown. Fig.11 As shown, a device for minimizing service interruption in an embodiment of the present disclosure is applied to a first network element, and the device includes: The second receiving module 1110 is used to receive a registration request message sent by a terminal device, where the registration request message carries indication information that the terminal device supports minimization of service interruption MINT; The data acquisition module 1120 is used to acquire the subscription data of the terminal device from the second network element according to the registration request message, where the subscription data includes the public land mobile network PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation; The second sending module 1130 is used to send a registration acceptance message to the terminal device, wherein the registration acceptance message is generated based on the contract data of the terminal device.

[0146] It should be noted that the number of indexes in the PLMN information used in a disaster situation and the PLMN-associated access type information used in a disaster situation is the same and corresponds one to one.

[0147] It should be noted that the access type in the PLMN-associated access type information used in disaster situations includes at least one of ground, low earth orbit, medium earth orbit, and high earth orbit.

[0148] In one embodiment, the device includes a second update module not shown in the accompanying drawings, and the second update module is used to receive a configuration update message sent by a second network element, the configuration update message including updated PLMN information used in disaster situations and / or PLMN associated access type information used in disaster situations; and send a configuration update message to a terminal device.

[0149] In an embodiment of the present disclosure, the terminal device sends an indication information of supporting MINT to the first network element through a registration request message, the first network element negotiates capabilities with the second network element, and the second network element sends the PLMN information used in a disaster situation and the PLMN-associated access type information used in a disaster situation to the terminal device, so that the terminal device saves the above-mentioned PLMN information and the corresponding PLMN-associated access type information, ensuring that service interruptions are minimized when a subsequent disaster occurs, reducing business interruptions of the terminal device, and improving user experience.

[0150] Fig.12 A schematic diagram of another device for minimizing service interruption provided by an embodiment of the present disclosure is shown. Fig.12 As shown, a device for minimizing service interruption in an embodiment of the present disclosure is applied to a second network element, and the device includes: The third receiving module 1210 is used to receive a registration request message of a terminal device sent by the first network element, where the registration request message of the terminal device carries indication information that the terminal device supports minimization of service interruption MINT; A data determination module 1220 is used to obtain subscription data of the terminal device according to the registration request message of the terminal device, where the subscription data includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations; The third sending module 1230 is configured to send a registration acceptance message to the first network element.

[0151] It should be noted that the number of indexes in the PLMN information used in a disaster situation and the PLMN-associated access type information used in a disaster situation is the same and corresponds one to one.

[0152] It should be noted that the PLMN-associated access type information includes at least one of ground, low earth orbit, medium earth orbit, and high earth orbit.

[0153] In one embodiment, the data determination module 1220 is used to determine the PLMN information used by the terminal device in a disaster situation and the PLMN associated access type information in the disaster situation according to the local configuration.

[0154] In one embodiment, the device also includes a third update module not shown in the accompanying drawings, and the third update module is used to trigger a configuration update if the PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation of the terminal device changes; the updated PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation of the terminal device is sent to the first network element, so that the first network element sends the updated PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation to the terminal device.

[0155] In the disclosed embodiment, the second network element sends PLMN information used in disaster situations and PLMN-associated access type information used in disaster situations to the terminal device based on whether the terminal device has indication information that it supports MINT, thereby ensuring that service interruption is minimized when a subsequent disaster occurs to the terminal device, reducing business interruption of the terminal device and improving user experience.

[0156] Fig.13 A schematic diagram of the structure of a system for minimizing service interruption provided by an embodiment of the present disclosure is shown. Fig.13 As shown, in one embodiment, a system for minimizing service interruption provided by an embodiment of the present disclosure includes a terminal device 110, a first network element 1310 and a second network element 1320, wherein: the terminal device 110 is used to send a registration request message to the first network element 1310, the registration request message carries indication information that the terminal device 110 supports minimization of service interruption MINT; receive a registration acceptance message sent by the first network element 1310, wherein the registration acceptance message is generated according to the subscription data of the terminal device 110 sent by the second network element 1320 to the first network element 1310, and the subscription data of the terminal device 110 includes a public land mobile network P used in disaster situations. LMN information and PLMN associated access type information used in disaster situations; a first network element 1310, used to receive a registration request message sent by the terminal device 110; obtain the contract data of the terminal device 110 from the second network element 1320 according to the registration request message; send a registration acceptance message to the terminal device 110, wherein the registration acceptance message is generated based on the contract data of the terminal device 110; the second network element 1320, used to receive a registration request message of the terminal device 110 sent by the first network element 1310; obtain the contract data of the terminal device according to the registration request message of the terminal device 110; send the contract data of the terminal device 110 to the first network element 1310.

[0157] Those skilled in the art will appreciate that various aspects of the present disclosure may be implemented as systems, methods or program products. Therefore, various aspects of the present disclosure may be specifically implemented in the following forms, namely: complete hardware implementation, complete software implementation (including firmware, microcode, etc.), or a combination of hardware and software, which may be collectively referred to herein as "circuits", "modules" or "systems".

[0158] Refer to the following Fig.14 1400 according to this embodiment of the present disclosure is described. Fig.14 The electronic device 1400 shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0159] like Fig.14 As shown, the electronic device 1400 is in the form of a general computing device. The components of the electronic device 1400 may include but are not limited to: at least one processing unit 1410, at least one storage unit 1420, and a bus 1430 connecting different system components (including the storage unit 1420 and the processing unit 1410).

[0160] The storage unit stores a program code, and the program code can be executed by the processing unit 1410, so that the processing unit 1410 executes the steps described in the above "Exemplary Method" section of this specification according to various exemplary embodiments of the present disclosure. For example, the processing unit 1410 can execute the following steps of the above method embodiment: the terminal device sends a registration request message to the first network element, and the registration request message carries indication information that the terminal device supports service interruption minimization MINT; receives a registration acceptance message sent by the first network element, wherein the registration acceptance message is generated based on the subscription data of the terminal device sent by the second network element to the first network element, and the subscription data of the terminal device includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations.

[0161] For example, the processing unit 1410 can independently perform the following steps of the above-mentioned method embodiment: the first network element receives a registration request message sent by the terminal device, the registration request message carries indication information that the terminal device supports service interruption minimization MINT; according to the registration request message, obtains the contract data of the terminal device from the second network element, the contract data includes the public land mobile network PLMN information used in disaster situations and the PLMN associated access type information used in disaster situations; sends a registration acceptance message to the terminal device, wherein the registration acceptance message is generated based on the contract data of the terminal device.

[0162] For example, the processing unit 1410 can independently perform the following steps of the above-mentioned method embodiment: the second network element receives a registration request message of the terminal device sent by the first network element, the registration request message of the terminal device carries indication information that the terminal device supports minimization of service interruption MINT; obtains the contract data of the terminal device according to the registration request message of the terminal device, the contract data includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations; sends the contract data of the terminal device to the first network element, so that the first network element generates a registration acceptance message according to the contract data of the terminal device.

[0163] The storage unit 1420 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 14201 and / or a cache storage unit 14202 , and may further include a read-only storage unit (ROM) 14203 .

[0164] The storage unit 1420 may also include a program / utility 14204 having a set (at least one) of program modules 14205, such program modules 14205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0165] Bus 1430 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0166] The electronic device 1400 may also communicate with one or more external devices 1440 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), one or more devices that enable a user to interact with the electronic device 1400, and / or any device that enables the electronic device 1400 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 1450. Furthermore, the electronic device 1400 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 1460. Fig.14 As shown, the network adapter 1460 communicates with other modules of the electronic device 1400 via the bus 1430. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the electronic device 1400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0167] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes a number of instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0168] In an exemplary embodiment of the present disclosure, a computer-readable storage medium is also provided, which may be a readable signal medium or a readable storage medium. A program product capable of implementing the above method of the present disclosure is stored on the computer-readable storage medium. In an exemplary embodiment of the present disclosure, a computer program product is also provided, which includes a computer program or a computer instruction, and the computer program or the computer instruction is loaded and executed by a processor to enable a computer to implement any of the above methods for minimizing service interruptions.

[0169] More specific examples of computer-readable storage media in the present disclosure may include, but are not limited to, an electrical connection having one or more conductors, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0170] In the present disclosure, a computer readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, wherein a readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A readable signal medium may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0171] Alternatively, the program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0172] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be embodied.

[0173] In addition, although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0174] Through the description of the above implementation modes, it is easy for those skilled in the art to understand that the example implementation modes described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation mode of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the implementation mode of the present disclosure.

[0175] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The description and examples are to be regarded as exemplary only, and the true scope of the present disclosure is indicated by the appended claims.

Claims

1. A method for minimizing service interruption, characterized in that, Applied to a terminal device, the method comprises: Sending a registration request message to the first network element, where the registration request message carries indication information that the terminal device supports minimization of service interruption MINT; Receive a registration acceptance message sent by the first network element, wherein the registration acceptance message is generated based on the subscription data of the terminal device sent by the second network element to the first network element, and the subscription data of the terminal device includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations.

2. The method for minimizing service interruption according to claim 1, characterized in that: The registration request message includes an initial registration request, or a mobile and periodic registration request.

3. The method for minimizing service interruption according to claim 1, characterized in that: The number of indexes in the PLMN information used in the disaster situation and the PLMN-associated access type information used in the disaster situation are the same and correspond one to one.

4. The method for minimizing service interruption according to claim 1, characterized in that: The access type in the PLMN associated access type information used in the disaster situation includes at least one of ground, low earth orbit, medium earth orbit, and high earth orbit.

5. The method for minimizing service interruption according to claim 1, characterized in that: The method further comprises: Receive a configuration update message sent by the first network element, wherein the configuration update message includes updated PLMN information used in disaster situations and / or PLMN-associated access type information used in disaster situations, and the configuration update message is triggered by the second network element.

6. The method for minimizing service interruption according to any one of claims 1 to 5, characterized in that: The method further comprises: If the terminal device cannot connect to the current serving PLMN and cannot establish an emergency protocol data unit PDU session, determining the PLMN used in the disaster situation in the target track according to the PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation; A connection is established with a PLMN used in a disaster situation in the target track.

7. The method for minimizing service interruption according to claim 6, characterized in that: The determining, according to the PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation, the PLMN used in the disaster situation in the target track to be used in the disaster situation includes: Determining a target access type according to the access capability and service characteristics of the terminal device; According to the target access type, the PLMN used in the disaster situation in the target track is determined from the PLMN information used in the disaster situation and the PLMN associated access type information used in the disaster situation.

8. The method for minimizing service interruption according to claim 6, characterized in that: After establishing the connection with the PLMN used in the disaster situation in the target track, the method further includes: After the disaster recovery of the current serving PLMN, switch to the current serving PLMN.

9. A method for minimizing service interruption, characterized in that Applied to a first network element, the method includes: Receiving a registration request message sent by a terminal device, the registration request message carrying indication information that the terminal device supports minimization of service interruption MINT; Acquire, from the second network element, subscription data of the terminal device according to the registration request message, the subscription data including public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations; A registration acceptance message is sent to the terminal device, wherein the registration acceptance message is generated based on the subscription data of the terminal device.

10. The method for minimizing service interruption according to claim 9, characterized in that: The number of indexes in the PLMN information used in the disaster situation and the PLMN-associated access type information used in the disaster situation are the same and correspond one to one.

11. The method of minimizing service interruption according to claim 9, characterized in that: The access type in the PLMN associated access type information used in the disaster situation includes at least one of ground, low earth orbit, medium earth orbit, and high earth orbit.

12. The method for minimizing service interruption according to any one of claims 9 to 11, characterized in that: The method further comprises: receiving a configuration update message sent by the second network element, where the configuration update message includes updated PLMN information used in a disaster situation and / or PLMN-associated access type information used in a disaster situation; Sending the configuration update message to the terminal device.

13. A method for minimizing service interruption, characterized in that: Applied to a second network element, the method comprises: Receiving a registration request message of a terminal device sent by a first network element, where the registration request message of the terminal device carries indication information that the terminal device supports minimization of service interruption MINT; Obtaining subscription data of the terminal device according to a registration request message of the terminal device, the subscription data including public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations; Send the subscription data of the terminal device to the first network element, so that the first network element generates a registration acceptance message according to the subscription data of the terminal device.

14. The method of minimizing service interruption according to claim 13, characterized in that: The number of indexes in the PLMN information used in the disaster situation and the PLMN-associated access type information used in the disaster situation are the same and correspond one to one.

15. The method of minimizing service interruption according to claim 13, characterized in that: The PLMN-associated access type information includes at least one of ground, low earth orbit, medium earth orbit, and high earth orbit.

16. The method of minimizing service interruption according to claim 13, characterized in that: The obtaining the subscription data of the terminal device according to the registration request message of the terminal device includes: The PLMN information used by the terminal device in a disaster situation and the PLMN-associated access type information in the disaster situation are determined according to the local configuration.

17. The method for minimizing service interruption according to any one of claims 13 to 16, characterized in that: The method further comprises: If the PLMN information used in a disaster situation and / or the PLMN associated access type information used in a disaster situation of the terminal device changes, a configuration update is triggered; The updated PLMN information used in disaster situations and / or the PLMN associated access type information used in disaster situations of the terminal device is sent to the first network element, so that the first network element sends the updated PLMN information used in disaster situations and / or the PLMN associated access type information used in disaster situations to the terminal device.

18. An apparatus for minimizing service interruption, characterized in that: Applied to a terminal device, the device comprises: A first sending module, configured to send a registration request message to a first network element, wherein the registration request message carries indication information that the terminal device supports minimization of service interruption MINT; The first receiving module is used to receive a registration acceptance message sent by the first network element, wherein the registration acceptance message is generated based on the subscription data of the terminal device sent by the second network element to the first network element, and the subscription data of the terminal device includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations.

19. An apparatus for minimizing service interruption, characterized in that Applied to a first network element, the device includes: A second receiving module is used to receive a registration request message sent by a terminal device, where the registration request message carries indication information that the terminal device supports minimization of service interruption MINT; A data acquisition module, configured to acquire subscription data of the terminal device from the second network element according to the registration request message, wherein the subscription data includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations; The second sending module is used to send a registration acceptance message to the terminal device, wherein the registration acceptance message is generated based on the contract data of the terminal device.

20. An apparatus for minimizing service interruption, characterized in that Applied to a second network element, the device comprises: A third receiving module is used to receive a registration request message of a terminal device sent by the first network element, where the registration request message of the terminal device carries indication information that the terminal device supports minimization of service interruption MINT; A data determination module, configured to obtain subscription data of the terminal device according to a registration request message of the terminal device, wherein the subscription data includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations; The third sending module is used to send the registration acceptance message to the first network element.

21. A system for minimizing service interruption, characterized in that The system comprises a terminal device, a first network element and a second network element, wherein: The terminal device is used to send a registration request message to the first network element, the registration request message carrying indication information that the terminal device supports service interruption minimization MINT; receive a registration acceptance message sent by the first network element, wherein the registration acceptance message is generated according to the subscription data of the terminal device sent by the second network element to the first network element, and the subscription data of the terminal device includes public land mobile network PLMN information used in disaster situations and PLMN associated access type information used in disaster situations; The first network element is configured to receive a registration request message sent by a terminal device; obtain the subscription data of the terminal device from the second network element according to the registration request message; and send a registration acceptance message to the terminal device, wherein the registration acceptance message is generated based on the subscription data of the terminal device; The second network element is used to receive a registration request message of a terminal device sent by the first network element; obtain the contract data of the terminal device according to the registration request message of the terminal device; and send the contract data of the terminal device to the first network element.

22. An electronic device, characterized in that: It includes a processor and a memory, wherein the memory is used to store executable instructions of the processor; wherein the processor is configured to execute the method for minimizing service interruption described in any one of claims 1 to 8, or the method for minimizing service interruption described in any one of claims 9 to 12, or the method for minimizing service interruption described in any one of claims 13 to 17 by executing the executable instructions.

23. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for minimizing service interruption described in any one of claims 1 to 8 is implemented, or the method for minimizing service interruption described in any one of claims 9 to 12 is implemented, or the method for minimizing service interruption described in any one of claims 13 to 17 is implemented.

24. A computer program product, characterized in that The method comprises a computer program or a computer instruction, wherein the computer program or the computer instruction is loaded and executed by a processor so that a computer implements the method for minimizing service interruption as described in any one of claims 1 to 8, or implements the method for minimizing service interruption as described in any one of claims 9 to 12, or implements the method for minimizing service interruption as described in any one of claims 13 to 17.

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