Temporary mobile group identifier application method and system, electronic equipment and storage medium

Abstract

The invention belongs to the technical field of railway communication, and particularly relates to a temporary mobile group identifier application method and system, electronic equipment and a storage medium, and the method comprises the steps: obtaining a relation table comprising a first relation between a group identifier and a temporary mobile group identifier in a group configuration management unit through application; sending a request message for applying for a temporary mobile group identifier list to a multicast / broadcast service function network element; receiving a temporary mobile group identifier list fed back by the multicast / broadcast service function network element; and sending a notification of successfully obtaining the temporary mobile group identifier list to a group configuration management unit. According to the method, the association relationship between the temporary mobile group identifier and the group identifier is planned, and the temporary mobile group identifier is notified to the terminal in advance through the subscription process of the configuration state, so that the problems that the process of establishing unicast and then establishing multicast is too long and the switching is too complicated are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of railway communications, and in particular relates to an application method, system, electronic equipment and storage medium for a temporary mobile group identifier. Background Art

[0002] 5G-R (5G Wireless Access Network) is the next generation broadband wireless mobile system for railways. It is used to solve the problems of the existing GSM-R (international wireless communication standard for railway communications and applications) system, such as insufficient carrying capacity, severe frequency band interference, and the end of its life cycle. It is the subsequent upgrade system of the GSM-R system.

[0003] Railway trunking services include individual and group voice and video calls, as well as one-to-one and one-to-many data calls. In GSM-R networks, railway group calls such as 210 and 299 are temporary dynamic group calls. The dispatcher or calling user temporarily calls all current users within their area, creating a location-based calling service. Currently, 5G end-to-end MBS multicast technology involves multiple network elements, including user equipment (UE), new radio (NR), multicast / broadcast service function (MBSF), multicast / broadcast service transport function (MBSTF), multicast / broadcast session management function (MB-SMF), and multicast / broadcast user plane function (MB-UPF), and is still under standardization. Railway 5G-R MCX group calls can also be implemented using unicast. However, for bandwidth-intensive services such as large files and videos, as well as trunking communication scenarios with large user volumes, unicast group calls require significant bandwidth, which the limited radio resources of 5G-R cannot support.

[0004] Under LTE's eMBMS (Evolved MBMS) technology system, to ensure service continuity, the recommended solution is to first establish a unicast channel, then a multicast channel, and then switch between the unicast and multicast channels based on conditions. However, this mechanism has a long call establishment process, a large establishment delay, and complex switching judgment conditions, making it unsuitable for railway multicast group calling applications. Summary of the Invention

[0005] In order to solve the above problems, the present invention proposes a method for applying for a temporary mobile group identifier, comprising the following steps:

[0006] Applying to obtain a relationship table in a group configuration management unit, wherein the relationship table pre-configures a first relationship between a group identifier and a temporary mobile group identifier;

[0007] Sending a request message for applying for a temporary mobile group identifier list to the multicast / broadcast service function network element;

[0008] receiving a temporary mobile group identifier list responded by the multicast / broadcast service function network element;

[0009] A notification of successfully acquiring the temporary mobile group identifier list is sent to the group configuration management unit, and the group configuration management unit notifies the user terminal that the configuration relationship in the relationship table has been changed.

[0010] Furthermore, the relationship table further configures a second relationship, which includes a configuration relationship between a group identifier, a multicast IP address, a port, and a group priority.

[0011] Furthermore, the triggering method of sending the request message for applying for the temporary mobile group identifier list to the multicast / broadcast service function network element includes:

[0012] The group configuration management unit manually triggers the operation and maintenance center manually triggers the operation and maintenance center manually triggers the operation and maintenance center manually triggers the operation and maintenance center automatically ...

[0013] Furthermore, the method further comprises: after receiving the request message for applying for the temporary mobile group identifier list, the multicast / broadcast service function network element verifies the request message;

[0014] If the request message is successfully verified, a temporary mobile group identifier list is generated, and a response message carrying the temporary mobile group identifier list is returned.

[0015] Furthermore, the method further includes the cluster communication application network element storing the temporary mobile group identifier list after receiving the temporary mobile group identifier list responded by the multicast / broadcast service function network element, and regularly updating the temporary mobile group identifier in the multicast / broadcast service function network element.

[0016] Furthermore, the method further includes the user terminal performing session initiation protocol authentication registration before applying to obtain the correspondence between the pre-configured group identifier and the temporary mobile group identifier in the group configuration management unit relationship table, obtaining the relationship table during registration and subscribing to the configuration status of the group configuration management unit.

[0017] Furthermore, the method further includes notifying the group configuration management unit to update the relationship table after the configuration relationship in the relationship table is changed, and notifying the user terminal that the configuration relationship in the group configuration management unit has been changed.

[0018] In a second aspect, the present invention proposes a cluster communication application network element, comprising:

[0019] An application unit, configured to apply for obtaining a relationship table in the group configuration management unit, wherein the relationship table pre-configured includes a first relationship between the group identifier and the temporary mobile group identifier;

[0020] A sending unit, configured to send a request message for applying for a temporary mobile group identifier list to a multicast / broadcast service function network element;

[0021] a receiving unit, configured to receive a temporary mobile group identifier list responded by the multicast / broadcast service function network element;

[0022] The notification unit is configured to send a notification of successfully acquiring the temporary mobile group identifier list to the group configuration management unit.

[0023] Furthermore, the triggering method of sending the request message for applying for the temporary mobile group identifier list to the multicast / broadcast service function network element in the sending unit includes:

[0024] The group configuration management unit manually triggers the group configuration management unit, the network management and maintenance network element manually triggers the group configuration management unit, or the group configuration management unit manually triggers the group configuration management unit, or the group management and maintenance network element manually triggers the group configuration management unit ...

[0025] Furthermore, the receiving unit is further configured to, after receiving the temporary mobile group identifier list responded by the multicast / broadcast service function network element, save the temporary mobile group identifier list and regularly update the temporary mobile group identifier in the multicast / broadcast service function network element.

[0026] In a third aspect, the present invention proposes a system for applying for a temporary mobile group identity, comprising a cluster communication application network element, a group configuration management unit, and a multicast / broadcast service function network element;

[0027] in,

[0028] The group configuration management unit is used to configure a relationship table including a first relationship between the group identifier and the temporary mobile group identifier;

[0029] The cluster communication application network element is used to apply for obtaining the temporary mobility group identifier list in the relationship table;

[0030] The multicast / broadcast service function network element is used to receive a request message for applying for a temporary mobile group identifier list, generate a TMGI list and respond to the request;

[0031] The cluster communication application network element is further configured to receive a temporary mobile group identifier list responded by the multicast / broadcast service function network element;

[0032] The group configuration management unit is further configured to receive a message indicating that the cluster communication application network element has successfully acquired and saved the temporary mobile group identifier list, and notify the message to the subscribed user terminal.

[0033] Furthermore, the application system further includes a user terminal;

[0034] The user terminal is configured to perform session initiation protocol authentication registration before obtaining the temporary mobile group identifier in the relationship table, obtain the relationship table during registration, and subscribe to the configuration status of the group configuration management unit;

[0035] It is further configured to receive a notification of the relationship table update sent by the group configuration management unit when receiving a configuration update in the group configuration management unit, and save the relationship table.

[0036] In a fourth aspect, the present invention provides an electronic device comprising a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0037] memory for storing computer programs;

[0038] The processor is configured to implement the method for applying for a temporary mobile group identifier when executing the program stored in the memory.

[0039] In a fifth aspect, the present invention proposes a storage medium for storing a computer-readable program, wherein when the computer-readable program is run, the method for applying for a temporary mobile group identifier is executed.

[0040] Beneficial effects of the present invention:

[0041] The present invention obtains a relationship table in the group configuration management unit by applying for it, wherein the relationship table pre-configures a first relationship between the group identifier and the temporary mobile group identifier; sends a request message for applying for a temporary mobile group identifier list to the multicast / broadcast service function network element; receives the temporary mobile group identifier list fed back by the multicast / broadcast service function network element; and sends a notification of successfully obtaining the temporary mobile group identifier list to the group configuration management unit. The above method plans the association relationship between the temporary mobile group identifier and the group identifier, and notifies the terminal of the temporary mobile group identifier in advance through the subscription process of the configuration status, thereby avoiding the problem of a too long process and too complicated switching of first establishing unicast and then establishing multicast. When a temporary group call is made, a temporary mobile group identifier can be dynamically associated with multiple MBS bearers, and multiple MBS dedicated bearers can be dynamically created based on the temporary mobile group identifier and the service area code.

[0042] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 A flow chart showing a method for applying for a temporary mobile group identifier proposed by the present invention is shown;

[0045] Figure 2 A flowchart of GMS-triggered TMGI application and notification is shown in an embodiment of the present invention;

[0046] Figure 3 A flowchart illustrating the application and notification of TMGI triggered by the MCX service in an embodiment of the present invention is shown;

[0047] Figure 4 A schematic diagram of a cluster communication application network element in an embodiment of the present invention is shown;

[0048] Figure 5 A schematic diagram of an electronic device in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0050] The abbreviations involved in the embodiments of the present invention include UE, MCX, GMS, OMC, MBS, MBSF, MBSTF, MB-SMF, MB-UPF, NR, TMGI, GID, etc. The abbreviations refer to the following as shown in Table 1:

[0051] Table 1

[0052]

[0053] Based on the 5G MBS framework, the present invention proposes a method for applying for a temporary mobile group identifier, such as Figure 1 As shown, the following steps are included:

[0054] Applying to obtain a relationship table in a group configuration management unit, wherein the relationship table pre-configures a first relationship between a group identifier and a temporary mobile group identifier;

[0055] Sending a request message for applying for a temporary mobile group identifier list to the multicast / broadcast service function network element;

[0056] Receive the temporary mobile group identifier list responded by the multicast / broadcast service function network element; and update the obtained temporary mobile group identifier list value to the locally obtained relationship table

[0057] A notification of successfully acquiring the temporary mobile group identifier list is sent to the group configuration management unit, and the group configuration management unit notifies the user terminal that the configuration relationship in the relationship table has been changed.

[0058] The relationship table further configures a second relationship among the group identifier, the multicast IP address, the port, and the group priority.

[0059] Furthermore, the triggering method of sending the request message for applying for the temporary mobile group identifier list to the multicast / broadcast service function network element includes: manual triggering by the group configuration management unit, manual triggering by the network management and maintenance network element, or triggering when the first user terminal registers with the cluster communication application network element. In order to more clearly illustrate the above-mentioned triggering methods, combined with Figure 2 and Figure 3 Provide detailed explanation.

[0060] The process of GMS manually triggering the application and notification of TMGI temporary mobile group identity is as follows: Figure 2 As shown, the following steps are included:

[0061] a1.1 Based on the railway's temporary dynamic group call planning, a relationship table including GID, TMGI, multicast IP, port, and group priority is configured in the GMS. This relationship table includes a first relationship and a second relationship. The first relationship is the correspondence between the group ID and the temporary mobile group ID, and the second relationship is the configuration relationship between the GID, multicast IP, port, and group priority. After the MCX network element environment is in place, the GMS manually triggers the TMGI application process. In this embodiment, the second relationship in the relationship table is a known configuration, while the TMGI in the first relationship is a null value. Only the correspondence between the GID and TMGI is configured.

[0062] a1.2 GMS obtains the TMGI list corresponding to the GID from MCX;

[0063] a1.3 The MCX verifies the GMS's TMGI list request message and requests a TMGI list from the MBSF. After the MBSF successfully verifies the request message, it generates a TMGI list and returns it to the MCX in a response message containing the TMGI list. The MCX saves the TMGI list, GID multicast IP, and port relationships, and periodically updates the TMGI resource pool with the MBSF to ensure long-term availability.

[0064] a1.4 The MCX maintains the secondary relationship between the GID and the TMGI and sends the maintained relationship table to the GMS. The GMS updates the relationship table and enters the obtained TMGI into the pre-configured relationship table.

[0065] a1.5 The UE performs SIP authentication registration, obtains GMS configuration, and subscribes to the GMS configuration status. This step can be performed before step a1.2.

[0066] When the a1.6 GMS configuration changes, the terminal is notified to update the GID and TMGI relationship table in the GMS file, and the UE maintains this relationship table. The TMGI is used in subsequent multicast channel monitoring, which includes the multicast service channel and the multicast control channel. The multicast service channel carries actual MBS service data and is a point-to-multipoint data transmission channel for transmitting multicast service MBS from the network to the UE (downlink). The multicast control channel is a point-to-multipoint channel for transmitting MBS control information from the network to the UE (downlink). This channel contains information about ongoing or upcoming MBS sessions.

[0067] The MCX triggers the application and notification of TMGI. The prerequisite for this method is that according to the temporary dynamic group call planning of the railway, the relationship table of GID, TMGI, multicast IP, Port, and group priority has been configured in GMS. The relationship table includes a first relationship and a second relationship. The first relationship is the correspondence between the group identifier and the temporary mobile group identifier. The second relationship includes the configuration relationship between GID, multicast IP, Port and group priority. The TMGI in the first relationship is a null value, and only the correspondence between GID and TMGI is configured. The application process of TMGI is as follows: Figure 3 As shown, the following steps are included:

[0068] b1.1 After the MCX network elements are in place, the TMGI application process is triggered manually by the MCX OMC or when the first end user registers with the MCX.

[0069] b1.2 The MCX obtains a pre-configured relationship table containing the first relationship (i.e., the correspondence between GID and TMGI) from the GMS. The GMS returns the pre-configured relationship table to the MCX.

[0070] b1.3 The MCX saves the preconfigured TMGI list returned by the GMS, where the TMGI value is empty, and requests multiple TMGI lists from the MBSF. After the MBSF verifies the request successfully, it generates a TMGI list and returns it to the MCX in a response message containing the TMGI list. The MCX saves the TMGI list and periodically updates the TMGI resource pool with the MBSF to ensure long-term availability.

[0071] b1.4MCX maintains a table of GID and TMGI relationships and sends it to the GMS. The GMS updates the GID, TMGI, and IP relationship tables.

[0072] b1.5 The UE performs SIP authentication registration, obtains GMS configuration, and subscribes to the GMS configuration status. This step can be performed before step b1.2;

[0073] b1.6 When the GMS configuration changes, the terminal is notified of the update of the GID and TMGI relationship table in the GMS configuration file. The UE obtains the latest relationship table and keeps it updated. It should be noted that TMGI is used for subsequent multicast channel monitoring.

[0074] Based on the same concept of the temporary mobile group identity application method, the present invention also proposes a temporary mobile group identity application system, including a cluster communication application network element, a group configuration management unit and a multicast / broadcast service function network element;

[0075] in,

[0076] The group configuration management unit is used to configure a relationship table including a first relationship between a group identifier and a temporary mobile group identifier;

[0077] The cluster communication application network element is used to apply for obtaining the temporary mobility group identifier list in the relationship table;

[0078] The multicast / broadcast service function network element is used to receive a request message for applying for a temporary mobile group identifier list, generate a TMGI list and respond to the request;

[0079] The cluster communication application network element is further configured to receive a temporary mobile group identifier list responded by the multicast / broadcast service function network element;

[0080] The group configuration management unit is further configured to receive a message indicating that the cluster communication application network element has successfully acquired and saved the temporary mobile group identifier list, and notify the subscribed mobile terminal.

[0081] Furthermore, the cluster communication application network element is as follows: Figure 4 As shown, it specifically includes an application unit, a sending unit, a receiving unit and a notification unit, which respectively perform the following steps:

[0082] An application unit, configured to apply for obtaining a relationship table in the group configuration management unit, wherein the relationship table pre-configured includes a first relationship between the group identifier and the temporary mobile group identifier;

[0083] A sending unit, configured to send a request message for applying for a temporary mobile group identifier list to a multicast / broadcast service function network element;

[0084] a receiving unit, configured to receive a temporary mobile group identifier list responded by the multicast / broadcast service function network element;

[0085] The notification unit is configured to send a notification of successfully acquiring the temporary mobile group identifier list to the group configuration management unit.

[0086] Based on the same concept of the application method of the temporary mobile group identifier, another exemplary embodiment of the present invention provides an electronic device. Figure 5 As shown, the electronic device includes at least one processor 501, at least one communication interface 502, at least one memory 503 and at least one communication bus 504; wherein the processor 501, the communication interface 502 and the memory 503 communicate with each other via the communication bus 504;

[0087] Memory 503, used to store computer programs;

[0088] The processor 501 is configured to implement the method for identifying fluid properties in a high-salinity tight reservoir when executing the program stored in the memory 503 .

[0089] Optionally, the communication interface may be an interface of a communication module, such as an interface of a 5G module; the processor may be a processor CPU, or an application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement an embodiment of the present invention. The memory may include high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk storage. The memory stores a program, and the processor calls the program stored in the memory to execute some or all of the above-mentioned method embodiments.

[0090] Another exemplary embodiment of the present invention provides an electronic device, comprising at least one processor, at least one communication interface, at least one memory, and at least one communication bus; wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0091] memory for storing computer programs;

[0092] The processor is configured to implement the method for applying for a temporary mobile group identifier when executing the program stored in the memory.

[0093] Based on the same concept as the application method for a temporary mobile group identifier, an embodiment of the present application further provides a storage medium comprising a computer program, which, when executed by a processor, implements some or all of the above-described method embodiments. Optionally, the storage medium may be a non-transitory computer-readable storage medium, such as a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, or optical data storage device.

[0094] The proposed method for applying for a temporary mobile group identifier (TMGI) can also be combined with the group call establishment, release, and delayed access processes, as well as group call conflict handling methods, to implement MBS group calls. The MCX initiates a group call based on the group identifier and service area code. The terminal monitors the MBS multicast channel in real time. When the terminal determines it has entered the cell range of the service area code, it joins the group call and receives service data. This method addresses key issues such as the definition of the association between the 5G-R group ID (GID), TMGI, and multicast bearer, as well as TMGI notification, group call conflict handling, voice preemption, and delayed access in MBS coverage overlap areas. It also simplifies the multicast establishment process, significantly reducing the setup latency of MBS multicast group calls and improving the user experience. The downlink channel of the MBS group call is shared by all members. For group calls with large numbers of members and high bandwidth requirements, such as those for videos or large files, this can significantly save wireless bandwidth and meet user service needs. This implementation method does not change the user experience of GSM-R users, making it imperceptible to users and reducing the learning curve for switching systems.

[0095] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for applying for a temporary mobile group identity, characterized in that: The following steps are involved: Applying to obtain a relationship table in a group configuration management unit, wherein the relationship table pre-configures a first relationship between a group identifier and a temporary mobile group identifier; Sending a request message for applying for a temporary mobile group identifier list to the multicast / broadcast service function network element; receiving a temporary mobile group identifier list responded by the multicast / broadcast service function network element; A notification of successfully acquiring the temporary mobile group identifier list is sent to the group configuration management unit, and the group configuration management unit notifies the user terminal that the configuration relationship in the relationship table has been changed.

2. The method for applying for a temporary mobile group identity according to claim 1, wherein: The relationship table further configures a second relationship, which includes a configuration relationship between a group identifier, a multicast IP address, a port, and a group priority.

3. The method for applying for a temporary mobile group identity according to claim 1, wherein: The triggering method of sending a request message for applying for a temporary mobile group identifier list to the multicast / broadcast service function network element includes: The group configuration management unit manually triggers the operation and maintenance center manually triggers the operation and maintenance center manually triggers the operation and maintenance center manually triggers the operation and maintenance center automatically ...

4. The method for applying for a temporary mobile group identity according to claim 1, wherein: The method further includes: the multicast / broadcast service function network element verifies the request message after receiving the request message for applying for a temporary mobile group identifier list; If the request message is successfully verified, a temporary mobile group identifier list is generated, and a response message carrying the temporary mobile group identifier list is returned.

5. The method for applying for a temporary mobile group identity according to claim 1, wherein: The method further includes the cluster communication application network element storing the temporary mobile group identifier list after receiving the temporary mobile group identifier list responded by the multicast / broadcast service function network element, and regularly updating the temporary mobile group identifier in the multicast / broadcast service function network element.

6. The method for applying for a temporary mobile group identity according to any one of claims 1 to 5, characterized in that: The method further includes the user terminal performing session initiation protocol authentication registration before applying to obtain the correspondence between the preconfigured group identifier and the temporary mobile group identifier in the group configuration management unit relationship table, obtaining the relationship table during registration and subscribing to the configuration status of the group configuration management unit.

7. The method for applying for a temporary mobile group identity according to claims 1-5, characterized in that: The method further includes notifying a group configuration management unit to update the relationship table after the configuration relationship in the relationship table is changed, and notifying the user terminal that the configuration relationship in the group configuration management unit has been changed.

8. A cluster communication application network element, characterized in that: include: An application unit, configured to apply for obtaining a relationship table in the group configuration management unit, wherein the relationship table pre-configured includes a first relationship between the group identifier and the temporary mobile group identifier; A sending unit, configured to send a request message for applying for a temporary mobile group identifier list to a multicast / broadcast service function network element; a receiving unit, configured to receive a temporary mobile group identifier list responded by the multicast / broadcast service function network element; The notification unit is configured to send a notification of successfully acquiring the temporary mobile group identifier list to the group configuration management unit.

9. The cluster communication application network element according to claim 8, characterized in that: The triggering method of sending the request message for applying for the temporary mobile group identifier list to the multicast / broadcast service function network element in the sending unit includes: The group configuration management unit manually triggers the group configuration management unit, the network management and maintenance network element manually triggers the group configuration management unit, or the group configuration management unit manually triggers the group configuration management unit, or the group management and maintenance network element manually triggers the group configuration management unit ...

10. The cluster communication application network element according to claim 8, characterized in that: The receiving unit is further configured to, after receiving the temporary mobile group identifier list responded by the multicast / broadcast service function network element, save the temporary mobile group identifier list and regularly update the temporary mobile group identifier in the multicast / broadcast service function network element.

11. A system for applying for a temporary mobile group identifier, characterized in that: Includes cluster communication application network elements, group configuration management units, and multicast / broadcast service function network elements; in, The group configuration management unit is used to configure a relationship table including a first relationship between the group identifier and the temporary mobile group identifier; The cluster communication application network element is used to apply for obtaining the temporary mobility group identifier list in the relationship table; The multicast / broadcast service function network element is used to receive a request message for applying for a temporary mobile group identifier list, generate a TMGI list and respond to the request; The cluster communication application network element is further configured to receive a temporary mobile group identifier list responded by the multicast / broadcast service function network element; The group configuration management unit is further configured to receive a message indicating that the cluster communication application network element has successfully acquired and saved the temporary mobile group identifier list, and notify the message to the subscribed user terminal.

12. The system for applying for a temporary mobile group identity according to claim 11, wherein: Also includes a user terminal; The user terminal is configured to perform session initiation protocol authentication registration before obtaining the temporary mobile group identifier in the relationship table, obtain the relationship table during registration, and subscribe to the configuration status of the group configuration management unit; It is further configured to receive a notification of the relationship table update sent by the group configuration management unit when receiving a configuration update in the group configuration management unit, and save the relationship table.

13. An electronic device, characterized in that: The processor, the communication interface, the memory and the communication bus are connected to each other via the communication bus. Memory for storing computer programs; The processor is configured to implement the method for applying for a temporary mobile group identifier according to any one of claims 1 to 7 when executing a program stored in the memory.

14. A storage medium for storing a computer-readable program, characterized in that: When the computer-readable program is executed, the method for applying for a temporary mobile group identity according to any one of claims 1 to 7 is executed.

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