Emergency call processing method, access and mobility management function network element and system

Abstract

The present disclosure provides an emergency call processing method, access and mobility management function network element and system, which relate to the communication field. The method comprises: in response to a registration request for a terminal to access a first network, obtaining a home operator of a user corresponding to the terminal; judging whether the first network is the same as a second network of the home operator; and instructing the terminal to initiate the emergency call to be initiated in the form of a normal call when the first network is different from the second network.

Description

Technical Field

[0001] The present disclosure relates to the field of communications, and in particular to an emergency call processing method, an access and mobility management function (AMF) network element and a system. Background Art

[0002] In the field of communications, "inter-network roaming" refers to users who have signed a contract with a communications operator using the network of another communications operator. Currently, inter-network roaming uses Voice over New Radio (VoNR) as a 5G network voice solution, where VoNR does not support terminals accessing the 2G / 3G / 4G network of the roaming operator to obtain voice services. Summary of the invention

[0003] The inventor noticed that in the related technology, the current operator's VoNR network does not support VoNR-based emergency calls. Therefore, when the terminal initiates an emergency call while roaming on a different network, it cannot access the 2G / 3G / 4G network of the roaming operator, nor can it fall back to the 4G / 3G / 2G network of the operator to which it belongs, resulting in the terminal being unable to make an emergency call while roaming on a different network.

[0004] In order to solve the above problems, the embodiments of the present disclosure propose the following solutions.

[0005] According to one aspect of an embodiment of the present disclosure, a method for processing an emergency call is provided, comprising: obtaining, in response to a registration request for a terminal to access a first network, a home operator of a user corresponding to the terminal; determining whether the first network is the same as a second network of the home operator; and instructing the terminal to initiate the emergency call to be initiated as a normal call when the first network is different from the second network.

[0006] In some embodiments, a first call initiated by the terminal in the form of a normal call is received; if the first call is an emergency call, an emergency call identifier is added to the first call to obtain a second call, and the second call is sent to an emergency call center.

[0007] In some embodiments, in response to the registration request, an access location of the terminal is obtained; wherein the emergency call center is the emergency call center closest to the access location of the terminal.

[0008] In some embodiments, the first call is received by an access and mobility management function AMF network element; the AMF network element sends the first call to a session management function SMF network element; the SMF network element sends the first call to an edge access control device BAC; the BAC sends the first call to a proxy call session control function P-CSCF network element; the P-CSCF network element determines whether the first call is an emergency call; wherein, in the case that the first call is an emergency call, adding the emergency call identifier to the first call to obtain the second call, and sending the second call to the emergency call center includes: the P-CSCF network element adds the emergency call identifier to the first call to obtain the second call, and sends the second call to the emergency call session control function E-CSCF network element; according to the access location of the terminal, the E-CSCF network element obtains the telephone number of the emergency call center from the location resource function LRF network element; according to the telephone number of the emergency call center, the E-CSCF network element sends the second call to the emergency call center.

[0009] In some embodiments, when the first network is the same as the second network, an emergency call number list is sent to the terminal.

[0010] In some embodiments, the first network is a fifth generation mobile communication technology 5G network.

[0011] According to another aspect of an embodiment of the present disclosure, a method for processing an emergency call is provided, including a terminal sending a registration request for accessing a first network; when the first network is different from a second network, the terminal receives an instruction to initiate the emergency call to be initiated as a normal call, wherein the second network is a network of a home operator of a user corresponding to the terminal.

[0012] In some embodiments, upon receiving the indication, the terminal initiates the emergency call in the form of a normal call.

[0013] In some embodiments, when the first network is the same as the second network, the terminal receives an emergency call number list and initiates an emergency call in the form of an emergency call.

[0014] According to another aspect of an embodiment of the present disclosure, an AMF network element is provided, including: an acquisition module, configured to obtain a home operator of a user corresponding to the terminal in response to a registration request for a terminal to access a first network; a judgment module, configured to judge whether the first network is the same as a second network of the home operator; and an indication module, configured to instruct the terminal to initiate an emergency call to be initiated as a normal call when the first network is different from the second network.

[0015] According to another aspect of an embodiment of the present disclosure, a terminal is provided, comprising: a sending module, configured to send a registration request for accessing a first network; a receiving module, configured to receive an indication of initiating an emergency call to be initiated as a normal call when the first network is different from a second network, wherein the second network is a network of a home operator of a user corresponding to the terminal.

[0016] According to another aspect of an embodiment of the present disclosure, there is provided an electronic device, comprising: a memory; and a processor coupled to the memory, configured to execute the method described in any one of the above embodiments based on instructions stored in the memory.

[0017] According to another aspect of the embodiments of the present disclosure, there is provided a system for processing emergency calls, comprising: the AMF network element described in any one of the above embodiments; and the terminal described in any one of the above embodiments.

[0018] According to another aspect of the embodiments of the present disclosure, there is provided a system for processing an emergency call, comprising: the electronic device described in any one of the embodiments above.

[0019] According to another aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, comprising computer program instructions, wherein when the computer program instructions are executed by a processor, the method described in any one of the above embodiments is implemented.

[0020] According to another aspect of the embodiments of the present disclosure, a computer program product is provided, including a computer program, wherein when the computer program is executed by a processor, the method described in any one of the above embodiments is implemented.

[0021] In the disclosed embodiment, in response to a registration request for a terminal to access a first network, the home operator of the user corresponding to the terminal is obtained, and then it is determined whether the first network is the same as the second network of the home operator, that is, whether the terminal is a roaming terminal in a different network. In the case of roaming in a different network, the terminal is instructed to initiate an emergency call in the form of a normal call, so that the terminal can initiate an emergency call in the case of roaming in a different network.

[0022] The technical solution of the present disclosure is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 is a flowchart of a method for processing an emergency call according to some embodiments of the present disclosure;

[0025] Figure 2 is a flowchart of a method for processing an emergency call according to other embodiments of the present disclosure;

[0026] Figure 3 is a flowchart of a method for processing an emergency call according to some other embodiments of the present disclosure;

[0027] Figure 4 is a flowchart of a method for processing an emergency call according to some other embodiments of the present disclosure;

[0028] Figure 5 is an interactive schematic diagram of a method for processing an emergency call according to yet other embodiments of the present disclosure;

[0029] Figure 6 An interactive schematic diagram of a method for processing an emergency call according to yet other embodiments of the present disclosure;

[0030] Figure 7 is a schematic diagram of the structure of an AMF network element according to some embodiments of the present disclosure;

[0031] Figure 8 is a schematic diagram of the structure of a terminal according to some embodiments of the present disclosure;

[0032] Fig. 9 is a schematic diagram of the structure of an electronic device according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0034] Unless specifically stated otherwise, the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure.

[0035] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0036] Technologies, methods, and apparatus known to ordinary technicians in the relevant field may not be discussed in detail, but where appropriate, such technologies, methods, and apparatus should be considered part of the authorization specification.

[0037] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0038] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] In addition, in the description of the present disclosure, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance and order. Similarly, although operations are depicted in a particular order in the accompanying drawings, this should not be understood as requiring that such operations be performed in the particular order shown or in a sequential order, or requiring that all illustrated operations be performed to achieve the desired results. In some cases, multitasking and parallel processing can be advantageous.

[0040] Figure 1 1 is a flow chart of a method for processing an emergency call according to some embodiments of the present disclosure. Here, the subject executing the method for processing an emergency call may be an AMF network element.

[0041] In step 102, in response to a registration request for a terminal to access a first network, a home operator of a user corresponding to the terminal is obtained.

[0042] In some embodiments, the terminal sends a registration request for accessing the first network to a base station, and the base station sends the registration request for the first network to an AMF network element.

[0043] In some embodiments, the information of the home operator of the user corresponding to the terminal may be carried in the registration request. For example, the information of the home operator of the user corresponding to the terminal may be a public land mobile network (PLMN).

[0044] In some embodiments, the first network is a fifth generation mobile communication technology (5G) network.

[0045] In step 104, it is determined whether the first network is the same as the second network of the home operator.

[0046] For example, if the first network is a telecommunications network and the second network is also a telecommunications network, then the first network is the same as the second network; if the first network is a telecommunications network and the second network is a Unicom network, then the first network is different from the second network.

[0047] In step 106, when the first network is different from the second network, the terminal is instructed to initiate the emergency call in the form of a common call.

[0048] In some embodiments, the emergency call may refer to a call initiated by calling number 112, and the ordinary call may refer to a call other than the emergency call.

[0049] In some embodiments, the terminal initiates emergency and ordinary calls through different call access point names (APNs). After receiving the above instructions, if the terminal needs to initiate an emergency call later, it will be initiated through the APN corresponding to the ordinary call.

[0050] In the above embodiment, in response to the registration request of the terminal to access the first network, the home operator of the user corresponding to the terminal is obtained, and then it is determined whether the first network is the same as the second network of the home operator, that is, it is determined whether the terminal is a roaming terminal in a different network. In the case of roaming in a different network, the terminal is instructed to initiate the emergency call to be initiated in the form of a normal call, so that the terminal can initiate the emergency call in the case of roaming in a different network.

[0051] Figure 2 2 is a flowchart of a method for processing an emergency call according to other embodiments of the present disclosure. Here, the subject that executes the method for processing an emergency call may be an AMF network element. Steps 202, 204, and 206 are the same as steps 102, 104, and 106, respectively.

[0052] In some embodiments, in step 208, when the first network and the second network are the same, an emergency call number list is sent to the terminal.

[0053] In this way, when the first network and the second network are the same, the terminal can also complete the initiation of the emergency call, so that the terminal can initiate the emergency call regardless of whether it is roaming in a different network.

[0054] Figure 3 1 is a flowchart of a method for processing an emergency call according to some other embodiments of the present disclosure. Here, the subject that executes the method for processing an emergency call may be an AMF network element. Steps 302, 304, and 306 are the same as steps 102, 104, and 106, respectively.

[0055] In step 308, a first call initiated by the receiving terminal in the form of a common call is received.

[0056] In step 310, if the first call is an emergency call, an emergency call identifier is added to the first call to obtain a second call, and the second call is sent to an emergency call center.

[0057] In some embodiments, whether it is an emergency call can be determined by a request uniform resource locator (RequestURI) carried in the registration request.

[0058] In this way, not only can the terminal initiate an emergency call when roaming in a different network, but the emergency call can also be correctly routed to the emergency call center to complete the outgoing emergency call.

[0059] In some embodiments, in response to the registration request, the access location of the terminal may also be obtained. In this case, the second call may be sent to the emergency call center closest to the access location of the terminal according to the access location of the terminal.

[0060] As some implementation modes, the access location of the terminal may be determined by the location of the base station to which the terminal accesses.

[0061] Combine the following Figure 4 , describing an example of the interactive process of a method for handling an emergency call.

[0062] In step 402, the terminal sends the first call to the AMF network element of the 5G core network.

[0063] In step 404, after receiving the first call, the AMF network element sends the first call to the session management function (SMF) network element.

[0064] In step 406, after receiving the first call, the SMF network element sends the first call to the edge access control device (BAC) of the Internet Protocol Multimedia Subsystem (IMS).

[0065] In step 408, the BAC sends the first call to a Proxy Call Session Control Function (P-CSCF) network element of the IMS.

[0066] In step 410, the P-CSCF network element determines whether the first call is an emergency call based on the information carried in the Request URI in the first call.

[0067] In step 412, if the result of the determination is that the first call is an emergency call, the P-CSCF network element adds an emergency call identifier to the first call to obtain a second call. For example, the emergency call identifier may be Priority: emergency.

[0068] In step 414, the P-CSCF network element sends the second call to an emergency call session control function (E-CSCF) network element of the IMS.

[0069] In step 416, the E-CSCF network element provides the access location of the terminal to the Location Resource Function (LRF) network element in the IMS. Here, the LRF network element is a network element that provides a mapping between the terminal access location and the real number of the emergency call center.

[0070] In step 418, the LRF network element returns the telephone number of the nearest emergency call center to the E-CSCF network element.

[0071] In step 420, the E-CSCF network element sends the second call to the nearest emergency call center through the telephone number of the emergency call center.

[0072] In this way, when roaming on a different network, not only can the terminal complete the outgoing emergency call to the emergency call center, but the emergency call can also be sent to the nearest emergency call center so that the user who initiates the emergency call can get help from the emergency call center more quickly.

[0073] Figure 5 It is a flowchart of a method for processing emergency calls according to some other embodiments of the present disclosure.

[0074] In step 502, the terminal sends a registration request for accessing the first network.

[0075] In some embodiments, the registration request includes an access location of the terminal.

[0076] In step 504, when the first network is different from the second network, the terminal receives an instruction to initiate the emergency call in the form of a normal call, wherein the second network is a network of a home operator of a user corresponding to the terminal.

[0077] In the above embodiment, in the case of roaming in a different network, the terminal can complete the initiation of the emergency call by receiving an instruction to initiate the emergency call as a common call.

[0078] In some embodiments, upon receiving the indication, the terminal initiates the emergency call in the form of a normal call.

[0079] As some implementation modes, the terminal initiates an emergency call on a normal call APN.

[0080] In this way, the terminal can initiate the emergency call as a normal call in response to the instruction.

[0081] In some embodiments, when the first network is the same as the second network, the terminal receives the emergency call number list and initiates the emergency call in the form of an emergency call.

[0082] As some implementations, when the terminal receives the emergency call number list, it can initiate an emergency call on the APN corresponding to the emergency call. For example, the APN corresponding to the emergency call can be the fourth generation mobile communication technology (4G) international Morse code distress signal (SOS) APN.

[0083] As some further implementation modes, the terminal may also fall back to 3G / 2G to initiate an emergency call.

[0084] In this way, when the first network and the second network are the same, the terminal can also complete the initiation of the emergency call, so that the terminal can initiate the emergency call regardless of whether it is roaming in a different network.

[0085] Combine the following Figure 6 , describing an example of the interactive process of a method for handling an emergency call.

[0086] In step 602, the terminal sends a registration request to a radio access network (RAN).

[0087] In step 604, the RAN selects an AMF network element applicable to the registration request.

[0088] In step 606, the RAN sends a registration request to the selected AMF network element.

[0089] In step 608, the AMF network element determines whether the network of the home operator corresponding to the terminal initiating the registration request is the same as the accessed RAN through the information of the home operator that can be indicated in the registration request.

[0090] In step 610, when the network of the home operator corresponding to the terminal is different from the accessed RAN, the AMF network element sends a registration accept message to the terminal, which carries a 5G system network feature support (5GS network feature support) information element, which can indicate the support status of the current 5G network, for example, whether the current network supports IMS.

[0091] In step 612, the terminal sends a registration complete (Registration Complete) message to the AMF network element.

[0092] In step 614, when the network of the home operator corresponding to the terminal is the same as the accessed RAN, the AMF network element sends a registration acceptance message to the terminal, which carries a 5G system network feature support information element and an emergency call number list (Emergency number List).

[0093] In step 616, the terminal sends a registration completion message to the AMF network element.

[0094] In this way, the terminal can initiate an emergency call regardless of whether it is roaming in a different network.

[0095] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the embodiments of the AMF network element and the terminal, since they basically correspond to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0096] Figure 7 It is a structural diagram of an AMF network element according to some embodiments of the present disclosure.

[0097] like Figure 7 As shown, the AMF network element includes an acquisition module 701, which is configured to respond to a registration request for the terminal to access the first network and obtain the home operator of the user corresponding to the terminal; a judgment module 702, which is configured to judge whether the first network is the same as the second network of the home operator; an indication module 703, which is configured to instruct the terminal to initiate the emergency call that needs to be initiated in the form of a normal call when the first network is different from the second network.

[0098] Figure 8 is a schematic diagram of the structure of a terminal according to some embodiments of the present disclosure.

[0099] like Figure 8 As shown, the terminal includes a sending module 801, which is configured to send a registration request for accessing a first network; a receiving module 802, which is configured to receive an indication of initiating an emergency call to be initiated in the form of a normal call when the first network is different from the second network, wherein the second network is the network of the home operator of the user corresponding to the terminal.

[0100] It should be understood that the AMF network element and the terminal may also include other modules to perform other corresponding operations described above.

[0101] Fig. 9 1 is a schematic diagram of the structure of an electronic device according to some embodiments of the present disclosure. It should be understood that the electronic device may be an AMF network element or a terminal.

[0102] like Fig. 9 As shown, the electronic device 900 includes a memory 901 and a processor 902 coupled to the memory 901 , and the processor 902 is configured to execute the method of any one of the aforementioned embodiments based on the instructions stored in the memory 901 .

[0103] The memory 901 may include, for example, a system memory, a fixed non-volatile storage medium, etc. The system memory may store, for example, an operating system, an application program, a boot loader, and other programs.

[0104] The electronic device 900 may also include an input / output interface 903, a network interface 904, a storage interface 905, etc. These interfaces 903, 904, 905, and the memory 901 and the processor 902 may be connected, for example, via a bus 906. The input / output interface 903 provides a connection interface for input / output devices such as a display, a mouse, a keyboard, and a touch screen. The network interface 904 provides a connection interface for various networked devices. The storage interface 905 provides a connection interface for external storage devices such as an SD card and a USB flash drive.

[0105] The disclosed embodiments also provide an emergency call processing system, comprising: an AMF network element of any one of the above embodiments and a terminal of any one of the above embodiments.

[0106] The disclosed embodiment also provides an emergency call processing system, including the above electronic device.

[0107] The embodiments of the present disclosure further provide a computer-readable storage medium, including computer program instructions, which implement the method of any one of the above embodiments when executed by a processor.

[0108] The embodiments of the present disclosure further provide a computer program product, including a computer program, which implements the method of any one of the above embodiments when executed by a processor.

[0109] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0110] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable non-transient storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0111] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that the functions specified in one or more processes in the flowchart and / or one or more blocks in the block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the functions specified in the flowchart. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0112] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0113] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0114] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A method for processing an emergency call, comprising: In response to a registration request for a terminal to access a first network, obtaining a home operator of a user corresponding to the terminal and an access location of the terminal, wherein the first network is a fifth generation mobile communication technology 5G network; Determining whether the first network is the same as the second network of the home operator; In the case where the first network is different from the second network, instructing the terminal to initiate the emergency call that the terminal needs to initiate in the form of a common call, wherein initiating in the form of a common call is initiating through a call access point name APN corresponding to the common call, and the APN corresponding to the common call is different from the APN corresponding to the emergency call; receiving a first call initiated by the terminal in the form of a common call; and In the case that the first call is an emergency call, an emergency call identifier is added to the first call to obtain a second call, and the second call is sent to an emergency call center closest to the access location of the terminal.

2. The method according to claim 1, wherein: The first call is received by an access and mobility management function AMF network element; the method further includes: The AMF network element sends the first call to the session management function SMF network element; The SMF network element sends the first call to an edge access control device BAC; The BAC sends the first call to a proxy call session control function P-CSCF network element; The P-CSCF network element determines whether the first call is an emergency call; Wherein, in the case that the first call is an emergency call, adding the emergency call identifier to the first call to obtain the second call, and sending the second call to the emergency call center includes: The P-CSCF network element adds the emergency call identifier to the first call to obtain the second call, and sends the second call to an emergency call session control function E-CSCF network element; According to the access location of the terminal, the E-CSCF network element obtains the telephone number of the emergency call center from the location resource function LRF network element; According to the telephone number of the emergency call center, the E-CSCF network element sends the second call to the emergency call center.

3. The method according to claim 1, further comprising: In a case where the first network is the same as the second network, an emergency call number list is sent to the terminal.

4. A method for processing an emergency call, comprising: The terminal sends a registration request for accessing a first network, wherein the first network is a fifth generation mobile communication technology 5G network; In the case where the first network and the second network are different, the terminal receives an instruction to initiate the emergency call that the terminal needs to initiate in the form of a normal call, wherein initiating in the form of a normal call is initiated through a call access point name APN corresponding to the normal call, the second network is a network of a home operator of a user corresponding to the terminal, and the APN corresponding to the normal call is different from the APN corresponding to the emergency call; Upon receiving the indication, the terminal initiates an emergency call in the form of a normal call so that the second call is sent to the emergency call center closest to the access location of the terminal, wherein the second call is obtained by adding an emergency call identifier to the emergency call initiated by the terminal in the form of a normal call.

5. The method according to claim 4, further comprising: In the case that the first network is the same as the second network, the terminal receives the emergency call number list and initiates the emergency call in the form of an emergency call.

6. An AMF network element, comprising: an acquisition module, configured to acquire, in response to a registration request for a terminal to access a first network, a home operator of a user corresponding to the terminal and an access location of the terminal, wherein the first network is a fifth generation mobile communication technology 5G network; A determination module, configured to determine whether the first network is the same as the second network of the home operator; an instruction module, configured to, when the first network is different from the second network, instruct the terminal to initiate the emergency call that the terminal needs to initiate in the form of a common call, wherein initiating in the form of a common call is initiating through a call access point name APN corresponding to the common call, and the APN corresponding to the common call is different from the APN corresponding to the emergency call; The AMF network element is also configured as: receiving a first call initiated by the terminal in the form of a common call; and In the case that the first call is an emergency call, an emergency call identifier is added to the first call to obtain a second call, and the second call is sent to an emergency call center closest to the access location of the terminal.

7. A terminal, comprising: A sending module is configured to send a registration request for accessing a first network, wherein the first network is a fifth generation mobile communication technology 5G network; A receiving module is configured to receive an instruction to initiate the emergency call that the terminal needs to initiate in the form of a common call when the first network is different from the second network, wherein the initiation in the form of a common call is initiated through a call access point name APN corresponding to the common call, the second network is a network of a home operator of a user corresponding to the terminal, and the APN corresponding to the common call is different from the APN corresponding to the emergency call; The terminal is also configured to: upon receiving the indication, initiate an emergency call in the form of a normal call so that the second call is sent to the emergency call center closest to the access location of the terminal, wherein the second call is obtained by adding an emergency call identifier to the emergency call initiated by the terminal in the form of a normal call.

8. An electronic device comprising: Memory; as well as A processor coupled to the memory is configured to execute the method according to any one of claims 1 to 5 based on instructions stored in the memory.

9. An emergency call processing system, comprising: The AMF network element as described in claim 6; and The terminal according to claim 7.

10. An emergency call processing system, comprising: The electronic device as claimed in claim 8.

11. A computer-readable storage medium comprising computer program instructions, wherein: When the computer program instructions are executed by a processor, the method according to any one of claims 1 to 5 is implemented.

12. A computer program product comprising a computer program, wherein: When the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

Images