CN113973272B

CN113973272B - Method, apparatus and storage medium for emergency call

Info

Publication number: CN113973272B
Application number: CN202111542619.1A
Authority: CN
Inventors: 赵钊; 李海波; 陈拴锋
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-05-03
Anticipated expiration: 2041-12-16
Also published as: CN113973272A

Abstract

The application provides a method, equipment and storage medium for an emergency call, which are suitable for electronic equipment, wherein the electronic equipment is accessed to a 4G or 5G network, and the method comprises the following steps: obtaining an instruction for an emergency call; if the 4G or 5G network does not support an IP Multimedia Subsystem (IMS) emergency call, the network falls back to the 2G network or the 3G network; if the calling number is a preset target emergency number and the current operator does not support the target emergency number, searching a first target network, wherein the first target network is a 2G network or a 3G network of the operator supporting the target emergency number; and after the first target network is searched, registering the first target network, and initiating an emergency call in the first target network. When the 2G or 3G network of the current operator does not support the target emergency number, the electronic equipment is switched to the networks of other operators supporting the target emergency number, so that the electronic equipment can normally broadcast the prompt tone corresponding to the target emergency number, and the use experience is improved.

Description

Method, apparatus and storage medium for emergency call

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, a device, and a storage medium for an emergency call.

Background

When a user uses an electronic device such as a mobile phone to make an emergency call (e.g., 112,911, etc.) for non-national use, the network of some carriers may not support the corresponding emergency number due to different policies of the carriers. When an emergency call is initiated in such a network, the electronic device may output a prompt that the emergency number of the current call is a null number, resulting in a poor user experience.

Disclosure of Invention

The application provides an emergency call method, equipment and a storage medium, which are used for solving the problem that a network does not support to initiate a call to part of emergency numbers.

In order to achieve the above object, the present application provides the following technical solutions:

a first aspect of the present application provides an emergency call method, which is applied to an electronic device, where the electronic device accesses a 4G or 5G network, and the method includes:

obtaining an instruction for an emergency call;

if the 4G or 5G network does not support an IP Multimedia Subsystem (IMS) emergency call, falling back to the 2G network or the 3G network;

determining whether the calling number is a preset target emergency number or not according to the instruction;

if the calling number is the target emergency number, determining whether the current operator supports the target emergency number;

if the current operator does not support the target emergency number, searching a first target network, wherein the first target network is a 2G network or a 3G network of the operator supporting the target emergency number;

after the first target network is searched, registering the first target network and initiating an emergency call in the first target network.

Illustratively, the first target network may be a Global System for Mobile communications (GSM) network. The destination emergency numbers may include 112,911 and 999.

In some embodiments, the determining whether the target emergency number is supported by the current operator comprises:

and judging whether the current operator supports the target emergency number according to a Public Land Mobile Network (PLMN) identification.

For example, if the PLMN id of the accessed network is 46003 or 46011, it may be determined that the target emergency number is not supported by the current operator.

In some embodiments, further comprising:

if the first target network is not searched, searching a second target network, wherein the second target network is a 2G network or a 3G network of an operator supporting the target emergency number, and the operator of the second target network is different from the operator of the first target network;

and after the second target network is searched, registering the target network and initiating an emergency call in the second target network.

Illustratively, the second target network may comprise a Universal Mobile Telecommunications System (UMTS) network. That is, when the calling number is the target emergency number and the current operator does not support the target emergency number, the GSM network may be searched first, and if the GSM network is not searched, the UMTS network may be searched.

In some embodiments, the determining whether the outgoing number is a preset target emergency number includes:

comparing the calling number with each number recorded in the target emergency number list;

if the calling number is consistent with any number in the target emergency number list, judging that the calling number is the target emergency number;

and if the calling number is not consistent with the numbers in the target emergency number list, judging that the calling number is not the target emergency number.

Optionally, the target emergency number may be stored in an encrypted File System (efs) partition of the electronic device, so as to avoid the target emergency number from being lost.

In some embodiments, the target emergency number is obtained by the electronic device from a cloud.

In some embodiments, further comprising:

sending the geographic position of the electronic equipment to the cloud;

and receiving a target emergency number corresponding to the geographical position of the electronic equipment, which is fed back by the cloud.

The embodiment has the advantages that the target emergency number is updated according to the geographical position, the application range of the emergency call method of the embodiment can be effectively expanded, and the electronic equipment can normally make emergency calls in any area.

In some embodiments, further comprising:

if the 4G or 5G network supports the IMS emergency call, the 4G or 5G network initiates the emergency call.

In some embodiments, further comprising:

and if the calling number is not the target emergency number, initiating an emergency call in the 2G network or the 3G network.

In some embodiments, further comprising:

if the current operator supports the target emergency number, an emergency call is initiated in the 2G network or the 3G network.

A second aspect of the present application provides an electronic device, comprising: one or more processors and memory;

the memory is used for storing one or more programs;

the one or more processors are configured to execute the one or more programs to cause the electronic device to perform the method for emergency call provided by any one of the first aspects of the present application.

A third aspect of the present application provides a computer storage medium storing a computer program for implementing the method of emergency calling provided by any one of the first aspects of the present application when executed.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

fig. 2 is a schematic block diagram of a processor of an electronic device according to an embodiment of the present disclosure;

fig. 3 is a flowchart illustrating an electronic device matching an emergency number according to an embodiment of the present disclosure;

fig. 4a is a schematic view of a scenario in which an electronic device initiates an emergency call according to an embodiment of the present application;

fig. 4b is a schematic view of another scenario in which an electronic device initiates an emergency call according to an embodiment of the present application;

fig. 5 is a flowchart illustrating an IMS emergency call performed by an electronic device according to an embodiment of the present application;

fig. 6 is a timing diagram illustrating an emergency call initiated by an electronic device according to an embodiment of the present application;

fig. 7 is a signaling interaction diagram for an electronic device to initiate an emergency call according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. The terminology used in the following examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise. It should also be understood that in the embodiments of the present application, "one or more" means one, two, or more than two; "and/or" describes the association relationship of the associated objects, indicating that three relationships may exist; for example, a and/or B, may represent: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The embodiment of the present application provides an electronic device 100, which may be a User Equipment (UE), such as a mobile terminal (e.g., a user mobile phone), a tablet computer, a desktop computer, a laptop computer, a handheld computer, a netbook, a Personal Digital Assistant (PDA), and the like.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 1, the electronic device 100 may include: the mobile phone includes a processor 110, an external memory 120, an internal memory (also referred to as "memory") 121, a Universal Serial Bus (USB) interface 130, a charging management Module 140, a power management Module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication Module 150, a wireless communication Module 160, an audio Module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor Module 180, a button 190, a motor 191, an indicator 192, a camera 193, a display screen 194, a Subscriber Identity Module (SIM) card interface 195, and the like. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

Processor 110 may include one or more processing units, such as: the Processor 110 may include an Application Processor (AP), a Communication Processor (CP, which may also be referred to as a modem), a Graphics Processing Unit (GPU), and the like.

Fig. 2 is a schematic block diagram of a processor of an electronic device according to an embodiment of the present disclosure. As shown in fig. 2, the application processor may include an application Framework (Framework) module, a Radio Interface Layer (RIL) module, and an Emergency Call Center Database (also called an Emergency number library), and the communication processor may include a Phone Book Manager (PBM) module. It should be noted that the application framework module, the radio interface layer module and the PBM module are not hardware on the corresponding processor, but are software modules running on the corresponding processor.

The application processor runs an operating system and application programs of the electronic device 100, wherein the operating system is an android operating system, an IOS operating system and the like, and the application programs are Windows Phone application programs and the like.

In this embodiment, the application processor may match a plurality of emergency numbers in an emergency number library according to a current Public Land Mobile Network (PLMN), and then send the emergency numbers to the communication processor. The communication processor may also synchronize its own stored emergency number to the application processor.

The emergency number library may be configured in the electronic device in advance when the electronic device is shipped from a factory. The emergency number bank may comprise a plurality of emergency numbers, wherein some of the emergency numbers may only be applicable in a particular public land mobile network, and the application processor needs to match the corresponding emergency numbers in the emergency number bank according to the currently accessed public land mobile network.

In some embodiments, the application processor may display a dial on a display screen of the electronic device 100 in response to a user operation, thereby obtaining a number that the user wants to call out, which the user inputs on the dial, and when the application processor determines that the calling-out number is an emergency number matched from the emergency number library, it may determine that the user is in an emergency call, and instruct the communication processor to initiate the emergency call at the emergency number through communication between the AP and the CP. And the application processor displays corresponding interfaces on the display screen according to the calling result, such as an interface which is calling, an interface which is successfully called and the like.

The communication processor is used for transmitting and receiving data to and from the mobile network. In this embodiment, the communication processor may initiate an emergency call to the mobile network with the emergency number input by the user based on the indication of the application processor, and feed back information of successful call setup to the application processor after the call is successful.

In some embodiments, when the public land mobile network accessed by the electronic device is changed, the communication processor may send the changed PLMN to the application processor.

In some embodiments, the network side may further issue an emergency number to the electronic device, and when the communication processor receives the emergency number issued by the network side, the communication processor may send the emergency number of the network side to the application processor.

The interaction between the application processor and the communication processor is further explained below in connection with fig. 3. Fig. 3 is a flowchart illustrating an electronic device matching an emergency number according to an embodiment of the present disclosure. As shown in fig. 3, when a Subscriber Identity Module (SIM) card is inserted into the electronic device, the application framework Module executes step S301 to receive SIM card insertion information. The SIM card insertion information may be sent by the SIM card to an application framework module running on the application processor. For example, the SIM card insertion information may be an EVENT _ SIM _ RECORDS _ LOADED instruction.

After the application framework module receives the SIM card insertion information and the electronic device registers to the network based on the SIM card, the application framework module executes step S302, that is, sends the current public land mobile network to the emergency number library, so as to match the emergency number corresponding to the current public land mobile network from the emergency number library. Exemplary emergency numbers obtained by matching may include 110,119, 120,112,911, etc.

After receiving the current plmn, the emergency number library performs step S303, i.e. sends the matched emergency number to the application framework module.

After receiving the matched emergency number, the application framework module executes step S304, that is, sends the matched emergency number to the radio interface layer module. The radio interface layer module then executes step S305, i.e. sends the matched emergency number to the communication processor.

The communication processor receives the matched emergency number and performs step S306, i.e., stores the matched emergency number. The communication processor then executes step S307, i.e. synchronizes all emergency numbers to the radio interface layer module. In step S307, the communication processor may synchronize all the emergency numbers stored therein to the wireless interface module in the form of a proactive command.

After the radio interface layer obtains the emergency number synchronized by the communication processor, step S308 is executed to synchronize all the emergency numbers to the application framework module. By synchronizing steps S307 and S308, the emergency numbers recorded by both the communication processor and the application framework module can be made coincident.

After receiving the synchronized emergency number, the application framework module executes step S309, i.e. stores the emergency number. The saving mode is not limited in this embodiment. For example, the application framework module may maintain the emergency numbers in a list.

Therefore, the application framework module can compare the calling number input by the user with the emergency number stored by the application framework module after the user performs the operation of dialing the phone number each time, so as to identify whether the calling number is the emergency number.

In some embodiments, when the communication processor receives the emergency numbers issued by the network side, the emergency numbers may also be synchronized to the application framework module through the wireless interface layer module.

When the communication processor performs step S310, i.e. detects that the registered public mobile network is changed (e.g. the electronic device enters from one cell to another cell), the communication processor performs step S311, i.e. informs the radio interface layer module of the changed public land mobile network (e.g. sends the identity of the changed public land mobile network to the radio interface layer module). The radio interface layer module performs step S312 again, that is, notifies the application framework module of the changed plmn (for example, sends the application framework module an identifier of the changed plmn), so that the application framework module performs step S302 again using the new plmn to match the corresponding emergency number from the emergency number library.

A memory may also be provided in processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 110. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory, avoiding repeated accesses, reducing the latency of the processor 110, and thus increasing the efficiency of the system.

The above is a detailed description of the embodiments of the present application taking the electronic device 100 as an example. It should be understood that the illustrated structure of the embodiment of the present application does not specifically limit the electronic device 100. Electronic device 100 may have more or fewer components than shown, may combine two or more components, or may have a different configuration of components. The various components shown in the figures may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

Due to the differences between the regions and the communication operators, when the electronic device accesses the 4G or 5G network, the electronic device may generally initiate an emergency call as follows:

if the 4G or 5G network currently accessed by the electronic device supports an IP Multimedia Subsystem (IMS) emergency call, the electronic device may directly initiate an emergency call in the currently accessed 4G or 5G network; if the 4G or 5G network to which the electronic device is currently connected does not support IMS emergency call, the electronic device needs to fall back to the 2G or 3G network of the same operator, and then initiate an emergency call in the 2G or 3G network.

For example, after a user dials an emergency number, if the 4G network of the china telecommunication in the area where the electronic device is located supports the IMS emergency call, the electronic device directly initiates the emergency call in the 4G network of the china telecommunication, and if the 4G network of the china telecommunication in the area where the electronic device is located does not support the IMS emergency call, the electronic device needs to fall back to the 3G network of the china telecommunication first and then initiate the emergency call in the 3G network of the china telecommunication.

When an electronic device initiates an emergency call in a 2G or 3G network, due to the difference in the policies of the communications carriers, the 2G and 3G networks of some communications carriers do not support the electronic device to initiate emergency calls to certain non-domestically used emergency numbers (e.g., 112,911 and 999, etc.).

For example, chinese telecom and chinese railway networks do not support calls to numbers 112,911 and 999, and chinese mobile and chinese unicom support calls to the aforementioned numbers. When the emergency number dialed by the user is not supported by the current network, the electronic equipment cannot normally broadcast the prompt tone corresponding to the emergency number, but can prompt the user that the current number is a blank number, so that poor user experience is caused.

Fig. 4a is a schematic view of a scenario in which an electronic device initiates an emergency call according to an embodiment of the present application. Referring to fig. 4a, when the electronic device 100 makes a call to the emergency number 112 in the network of the china mobile, the electronic device 100 will normally report specific alert tones "bandit 110, fire 119 … …".

Fig. 4b is a schematic view of another scenario in which an electronic device initiates an emergency call according to an embodiment of the present application. Referring to fig. 4b, when the electronic device 100 makes a call to the emergency number 112 in the network of the chinese telecommunication, since the network of the chinese telecommunication does not support the call 112 number, the electronic device 100 may broadcast a prompt tone "the number dialed by you is a blank number".

In view of the above problem, the present application provides an emergency call method, which is suitable for the electronic device shown in fig. 1, please refer to fig. 5. Fig. 5 is a flowchart of an IMS emergency call performed by an electronic device, where the flowchart of the IMS emergency call performed by the electronic device may include the following steps:

after the user inputs the emergency number and finishes the dialing operation, the electronic device executes step S501 to initiate an IMS emergency call. In step S501, the electronic device transmits an instruction for an emergency call to the currently accessed 4G or 5G network based on the IMS technology.

For example, in step S501, the instruction sent by the electronic device to the currently accessed network may be an IMS Emergency Call (IMS Emergency Call).

After receiving the instruction of the electronic device, the network feeds back the reply information to the electronic device, and correspondingly, the electronic device executes step S502 to receive the reply information of the network. The reply message is used to indicate to the electronic device whether the current network supports IMS emergency calls. Therefore, after the electronic device executes step S502, it is determined whether the current network supports the IMS emergency call according to the reply information of the network.

If the electronic device determines that the current network supports the IMS emergency call, the electronic device performs step S503 to establish a call according to a conventional procedure.

In some embodiments, the conventional flow described in step S503 may include the following steps:

the electronic device sends a call request (Invite) command to the network, and the network replies a confirmation command to the electronic device. Illustratively, the ACKnowledgement command returned by the network may be a Provisional ACKnowledgement (PRACK) command.

And after receiving the confirmation instruction, the electronic equipment performs instruction interaction with the network to establish call connection. For example, when the electronic device establishes a call connection with the network, the electronic device may send an Update (Update) instruction to the network. And finally, after the call connection between the electronic equipment and the network is successfully established, the electronic equipment sends a call establishment success instruction to the network, thereby ending the call establishment process. Illustratively, the call setup success instruction may be a 200 Ok instruction.

It should be noted that, after the call connection is established in step S503, the electronic device may play an alert tone provided by the network, and since some service desks of the emergency number in the network are service desks established by multiple operators, the alert tone played by the electronic device may not match with the operator of the network to which the electronic device is connected.

For example, for an electronic device accessing a network of china telecommunications, if a service desk of an emergency number called by the electronic device is a service desk for establishing a unified power line connection (i.e., a service desk for establishing both china telecommunications and china telecommunications), after a call connection is established in step S503, a prompt tone played by the electronic device may be "welcome to china telecommunications … …", but at this time, the network accessed by the electronic device is not changed and is still the network of china telecommunications.

If the electronic device determines that the current network does not support the IMS emergency call, the electronic device executes step S504, falls back to the 2G or 3G network and step S505, and executes the optimization scheme.

In step S505, the electronic device may recognize whether the outgoing number input by the user is a target emergency number and whether the operator of the currently accessed network supports the target emergency number, and then determine whether to directly initiate an emergency call in the 2G or 3G network of the current operator or to initiate an emergency call after registering with the 2G or 3G network of another operator according to the recognition result.

The following further describes an optimization scheme in the method for emergency call provided by the embodiment of the present application with reference to fig. 6. Fig. 6 is a flowchart of a method for an electronic device to initiate an emergency call according to an embodiment of the present application. The method is performed by an electronic device and may include the steps of:

s601, obtaining an emergency call instruction.

The emergency call instruction is generated by the electronic equipment in response to the operation of the user for making a call. After the user opens the call application of the electronic device, the electronic device displays an interface as shown in (1) of fig. 4a, and the user can input a calling number in the interface. Such as 112 shown in (1) of fig. 4a, and then clicks the dial key to complete the operation of making a call.

When a user presses a dial key, the electronic equipment generates a call instruction, and the call instruction carries a calling number input by the user. Taking (1) of fig. 4a as an example, after the user presses the dial key, the electronic device generates a call instruction carrying the outgoing number 112.

Further, the electronic device may identify whether a calling number in the call instruction belongs to an emergency number pre-stored in the application framework module, and if the calling number is the emergency number, the electronic device determines that the current call instruction is an instruction for emergency call.

S602, determine whether the mobile network 1 supports the IMS emergency call.

If the mobile network 1 supports the IMS emergency call, step S603 is executed, and if the mobile network 1 does not support the IMS emergency call, step S604 is executed.

When the mobile network 1 accessed by the electronic device is a 4G or 5G network, the electronic device may initiate an emergency call based on IMS, that is, an IMS emergency call, and some networks do not support the IMS emergency call. Therefore, before initiating a call, the electronic device needs to identify whether the mobile network 1 supports IMS emergency call, and if not, the electronic device needs to fall back to a network of 2G or 3G system before initiating a call.

The electronic device may determine whether the mobile network 1 supports the IMS emergency call in various manners, and the specific determination manner is not limited in this embodiment. For example, the electronic device may send an IMS emergency call instruction to the mobile network, and then determine whether the mobile network 1 supports IMS emergency call according to reply information of the mobile network 1.

S603, an emergency call is initiated to the mobile network 1.

In step S603, the electronic device may initiate an emergency call to the mobile network 1 according to the currently general emergency call flow.

For example, in step S603, the electronic device may send a call request to the mobile network 1, where the call request carries a calling number input by the user. After receiving the call request, the mobile network 1 feeds back corresponding information to the electronic device, for example, may feed back 100Tring signaling, 183 signaling, and 180ringing signaling, where 100Tring is used to indicate to the electronic device that the network has received the call request, 183 is used to indicate to the electronic device the current call progress, and 180ringing is used to indicate to the electronic device that the opposite end has received the call request and rings (or vibrates).

The electronic device, upon receiving the information fed back by the network, may output a ring back tone (e.g., "beep"). And then if the information that the opposite terminal is connected, which is fed back by the mobile network 1, is not received within the specific time, the electronic device can output a prompt that the opposite terminal is not connected and end the call, and if the information that the opposite terminal is connected, which is fed back by the mobile network 1, is received within the specific time, the electronic device starts to communicate with the opposite terminal.

And S604, falling back to the 2G or 3G network.

In step S604, the electronic device may fall back to the 2G or 3G network using Circuit Switched Fallback (CSFB).

For example, the electronic device may preferentially fall back to the 3G network in step S604, and fall back to the 2G network if it is found that the current location of the electronic device has no coverage of the 3G network or the signal of the 3G network is weak.

In step S604, the operator of the 2G or 3G network is the same as the operator of the mobile network 1 to which the electronic device originally accesses. For example, if the mobile network 1 is a 4G network of china telecommunications, the electronic device is accessed after falling back in step S604, which is also a 2G or 3G network of china telecommunications.

It is understood that steps S602 to S604 are optional steps. If the mobile network 1 accessed by the electronic device is already a network of 2G or 3G system, the electronic device may not execute step S602 to step S604, but directly determine whether the calling number is the target emergency number, that is, directly execute step S605.

S605, judging whether the calling number is the target emergency number.

If the calling number is the target emergency number, step S606 is executed, and if the calling number is not the target emergency number, step S607 is executed.

The target emergency number described in this embodiment is used to refer to an emergency number that is not supported in the network of a part of the communication carriers. For example, the emergency numbers 112,911 and 999 are not supported by the network of china telecom and china railway, and the electronic device receives a prompt tone "the number dialed by you is a blank number" when dialing the emergency numbers in the network of china telecom and china railway, so the target emergency numbers of the embodiment may include one or more of 112,911 and 999.

The electronic device may store a plurality of target emergency numbers in the form of a target emergency number list, and when step S605 is executed, the electronic device may compare the current outgoing number with the target emergency numbers stored in the target emergency number list one by one, that is, may determine whether the outgoing number is the target emergency number.

In some alternative embodiments, the target emergency number may be stored in an encrypted File System (efs) partition of the electronic device. This has the advantage of avoiding the electronic device from being unable to correctly identify whether the outgoing number is the target emergency number due to the corresponding file being corrupted or missing.

In some optional embodiments, the electronic device may communicate with a software platform (e.g., cloud) that employs application virtualization technology to update its own stored target emergency number. For example, when the geographic location of the electronic device changes, such as moving from one city to another city, or moving from one country to another country, the electronic device may report the change of the geographic location to the cloud, and the cloud sends the corresponding target emergency number to the electronic device according to the current geographic location of the electronic device. This has the advantage of expanding the application range of the emergency call method of the embodiment, so that the electronic device can make an emergency call normally in any area.

For example, when a domestic electronic device is used abroad, the cloud may issue a target emergency number of the country to the electronic device in a form of a target emergency number list according to the country where the electronic device is located, so that when the electronic device is used abroad, an emergency call may be also made based on the method of the embodiment.

S606, judging whether the operator of the current network supports the target emergency number.

If the operator of the current network does not support the target emergency number, step S608 is performed, and if the operator of the current network supports the target emergency number, the electronic device performs step S607.

In some embodiments, if it is determined that the operator of the current network supports the target emergency number and the current network is a network of a 2G or 3G standard, the electronic device may directly initiate a call without performing an action of dropping back to the 2G or 3G network.

In step S606, the electronic device may determine whether the operator of the current network supports the target emergency number in multiple manners, which is not limited in this embodiment.

In some embodiments, the electronic device may compare the PLMN identifier of the current network with pre-recorded PLMN identifiers of multiple operators that do not support the target emergency number, determine that the operator of the current network does not support the target emergency number if the PLMN identifier of the current network belongs to the pre-recorded PLMN identifier of the operator that does not support the target emergency number, and determine that the operator of the current network supports the target emergency number if the PLMN identifier of the current network does not belong to the pre-recorded PLMN identifier of the operator that does not support the target emergency number.

For example, the target emergency numbers may include 112 and 911, the operators not supporting the target emergency numbers may include china telecom and china railway, the PLMN identities of networks operated by china telecom or china railway may include 46003 and 46011, and correspondingly, the operators supporting the target emergency numbers may include china mobile and china Unicom, wherein the PLMN identities of networks operated by china Unicom include 46001, 46006 and 46009, and the PLMN identities of networks operated by china mobile may include 46000,46002,46004 and 46007.

Based on the above example, the electronic device may record, in advance, the PLMN identifiers of the two operators that do not support the target emergency number 46003 and 46011, and when step S606 is executed, the electronic device determines whether the PLMN identifier of the current network is 46003 or 46011, if the PLMN identifier of the current network is 46003 or 46011, the electronic device determines that the operator of the current network does not support the target emergency number, and if the PLMN identifier of the current network is neither 46003 nor 46011, the electronic device determines that the operator of the current network supports the target emergency number.

S607, the emergency call is initiated in the 2G or 3G network.

In step S607, the electronic device may initiate an emergency call according to a conventional communication protocol of the 2G or 3G network, and details of the process are not repeated.

S608, the mobile network 2 supporting the target emergency number is searched.

Generally, the mobile network may not support the IMS-based call origination, so in step S608, the mobile network 2 searched by the electronic device may specifically be a network in a 2G or 3G standard provided by an operator that supports the target emergency number.

In some embodiments, when the target emergency numbers are 112 and 911, the searched mobile network 2 may be a 3G network operated by china mobile or china unicom. The Mobile network 2 may be, for example, a Global System for Mobile communications (GSM) network operated by china Mobile, or may be a Universal Mobile Telecommunications System (UMTS) network operated by china Mobile Telecommunications.

S609 registers with the mobile network 2 and initiates a call.

The processes described in steps S605 to S609 in this embodiment are equivalent to the optimization scheme described in step S505 in the embodiment corresponding to fig. 5.

The method for emergency call provided by the embodiment has the following beneficial effects:

when the electronic equipment initiates an emergency call, whether an operator of a currently registered network supports a calling number or not is identified in advance, and when the operator of the currently registered network does not support the calling number, the electronic equipment registers to the networks of other operators supporting the calling number and then initiates the emergency call, so that a user can be ensured to hear a prompt tone corresponding to the calling number, and the use experience of the user is improved.

In some embodiments, the method for emergency call shown in fig. 6 may be implemented by an application framework module and a communication processor in an electronic device, and a process for implementing the emergency call method by the application framework module and the communication processor is described below with reference to fig. 7:

s701, receiving a calling instruction.

Step S701 may be specifically executed by the application framework module.

The call instruction conversation application generates and sends the call instruction conversation application to the application framework module. Illustratively, after the user clicks a dial key in the interface shown in (1) of fig. 4a, the call application generates a call instruction in response to the user operation, and then sends the call instruction to the application framework module.

The calling instruction can carry a calling number input by the user. Illustratively, the outgoing number may be 112 in this embodiment.

S702, determining the calling number as an emergency number.

Step S702 may be specifically executed by the application framework module.

After receiving the calling instruction, the application framework module compares the calling number with a plurality of emergency numbers stored in advance, and therefore the calling number is determined to be the emergency number.

Steps S701 to S702 in this embodiment are equivalent to step S601 in the embodiment corresponding to fig. 6.

In some embodiments, steps S701 to S702 may also be executed by a communication processor of the electronic device, and the execution subject of steps S701 to S702 is not limited in this embodiment.

S703, sending a call instruction.

Step S703 may be specifically executed by the application framework module.

Illustratively, the Call instruction may be an IMS Emergency Call.

S704, judging whether the current network supports the IMS emergency call.

Step S704 may specifically be performed by the communication processor.

If the current network supports the IMS emergency call, step S705 is performed, and if the current network does not support, step S706 is performed.

For a specific implementation of step S704, refer to step S602 in the embodiment corresponding to fig. 6, which is not described herein again.

And S705, initiating the emergency call based on the IMS.

Step S705 may specifically be performed by the communication processor.

For a specific implementation of step S705, refer to step S603 in the embodiment corresponding to fig. 6, which is not described herein again.

S706, the network falls back to the 2G or 3G network.

Step S706 may specifically be performed by the communication processor.

For a specific implementation of step S706, refer to step S604 in the embodiment corresponding to fig. 6, which is not described herein again.

And S707, judging whether the calling number is a target emergency number.

In this embodiment, step S707 may be specifically executed by the application framework module.

If the calling number is the target emergency number, step S708 is performed.

In this embodiment, if the application framework module determines that the calling number is not the target emergency number, the application framework module may not send information to the communication processor, and after the communication processor falls back to the 2G or 3G network, if the information of the application framework module is not received, the communication processor may directly initiate an emergency call in the 2G or 3G network, that is, step S710 is executed, and if the communication processor receives an instruction that the application framework module identifies an operator of the current network, the communication processor executes step S709.

In some optional embodiments, the application framework module may also notify the communication processor of the determination result when it is determined that the outgoing call number is not the target emergency number, so that the communication processor performs step S710.

In some alternative embodiments, step S707 may also be executed by the communication processor, which is not limited in this embodiment.

For a specific implementation of step S707, refer to step S605 of the embodiment corresponding to fig. 6, which is not described herein again.

For example, the application framework module compares the calling number with a pre-stored target emergency number to determine whether the calling number is the target emergency number.

Continuing with the example of fig. 4b, the pre-stored destination emergency numbers may include 112,911 and 999, and the outgoing call number input by the user is 112, in step S707, the application framework module compares the outgoing call number (112) with the pre-stored destination emergency numbers (112, 911 and 999) to determine that the outgoing call number is the destination emergency number.

S708, instruct the communication processor to identify the operator of the current network.

Step S708 may be specifically performed by the application framework module.

In step S708, the application framework module may send an instruction to the communication processor to trigger the communication processor to identify whether the target emergency number is supported by the operator of the network in which the current electronic device is registered.

In some embodiments, the application framework module may send the PLMN of the operator that does not support the target emergency number to the communication processor in step S708, so that the communication processor performs step S709 based on the PLMN of the network of the operator that does not support the target emergency number.

For example, in this embodiment, the operators that do not support the target emergency number may include china telecom and china railway, the PLMNs of the networks of the two operators may include 46003 and 46011, and the application framework module may send 46003 and 46011 to the communication processor when executing step S708.

S709, determine whether the operator of the current network supports the target emergency number.

Step S709 may be specifically executed by the communication processor.

The current network in step S709 refers to the 2G or 3G network accessed after the communication processor executes step S706.

If the operator of the current network does not support the target emergency number, step S711 is executed, and if the operator of the current network supports the target emergency number, step S710 is executed.

When executing step S709, the communication processor first identifies a PLMN of a mobile network currently registered by the electronic device, where the PLMN of the mobile network may be fed back by the mobile network after the electronic device successfully registers with the mobile network, and then compares the PLMN of the currently registered mobile network with a PLMN of a network of an operator that does not support the target emergency number, where the PLMN may be read from a memory of the electronic device by the communication processor, or may be sent to the communication processor by the application framework module as described in step S708.

For a specific implementation of step S709, refer to step S606 in the embodiment shown in fig. 6, which is not described herein again.

For example, PLMNs corresponding to the operator that does not support the target emergency number may include 46003 and 46011, and the communication processor identifies that the PLMN of the network currently registered by the electronic device is 46003 when performing step S709, so that the communication processor determines that the operator of the current network does not support the target emergency number, and performs step S711.

Optionally, in step S709, if the communication processor determines that the operator of the current network supports the target emergency number, the communication processor may notify the application framework module of the determination result, and then the application framework module sends a call instruction to the communication processor, and the communication processor initiates an emergency call in the 2G or 3G network based on the call instruction, that is, step S710 is executed.

S710, an emergency call is initiated in a 2G or 3G network.

Step S710 may specifically be performed by a communication processor. The detailed implementation of step S710 can be seen in step S607 of the corresponding embodiment in fig. 6.

And S711, reporting a domain changing command.

Step S710 may specifically be performed by a communication processor.

The domain change command is used to request a handover to the application framework module to the network of the operator supporting the target emergency number. For example, the domain change command may declare to the application framework module that the operator of the currently registered network does not support the call of the target emergency number, i.e., does not support the emergency call of the outgoing number this time.

The process from step S708 to step S711 can be regarded as an implementation of step S606 in the embodiment shown in fig. 6.

In some embodiments, the application framework module may also determine whether the operator of the current network supports the target emergency number by itself after determining that the calling number is the target emergency number, and at this time, steps S708 and S711 of this embodiment may not be performed.

S712, a command for searching the first target network is issued.

Step S712 may be specifically executed by the application framework module.

In step S712, the application framework module issues a command to search for the first target network to the communication processor. The command may carry information related to the first target network, for example, may carry a PLMN of the first target network.

Optionally, the application framework module may store information about each network supporting the target emergency number, for example, the PLMN of the network supporting the target emergency number. The specific storage manner is not limited in this embodiment, and for example, the application framework module may use a list to store the PLMNs of each network supporting the target emergency number. When step S712 is performed, the application framework module designates one of the networks supporting the target emergency number as a first target network, and then issues a command to search for the first target network to the communication processor.

In some embodiments, the information related to the network supporting the target emergency number may be sent to the application framework module of the electronic device by the server. Alternatively, the information related to the network supporting the target emergency number may be written in the memory of the electronic device in advance.

In some embodiments, the first target network may be any operator-provided network that supports a target emergency number.

Continuing with the example of fig. 4b, when the calling number is 112, the operators supporting the number include china mobile and china unicom, so the first target network may be a network of 3G standard provided by china mobile, that is, a network of 46000 PLMN. Correspondingly, the command issued by the application framework module may be AT + evadsode = GSM, and the command is used to instruct the communication processor to search for a 3G network, i.e., a GSM network, provided by the china mobile.

S713, search for the first target network.

Step S713 may specifically be performed by the communication processor.

If the search is successful, i.e., the first target network is searched, step S715 is performed, and if the search is failed, i.e., the first target network is not searched, step S714 is performed.

In step S712, the communication processor may search for a corresponding first target network based on the relevant information of the first target network carried in the command issued by the application framework module. For example, if the PLMN carried by the command in step S712 is 46000, in step S713, the communication processor searches for the first target network, which is the network whose PLMN is 46000.

In step S713, the communication processor may determine that the search has failed when the first target network is not searched after searching for the preset time period, for example, determine that the search has failed when the first target network is not searched after searching for 3 seconds.

The process of steps S712 and S713 corresponds to step S608 of the embodiment shown in fig. 6.

And S714, feeding back the information of the search failure.

Step S714 may specifically be performed by the communication processor.

For example, the information of the search failure may be Attach Reject signaling. In some embodiments, the signaling may include a reason for the search failure.

S715, registering to the first target network and initiating a call.

Step S715 may specifically be performed by the communication processor.

In step S715, the communication processor may register with the first target network first, and after the registration is successful, the communication processor feeds back information of successful registration to the application framework module, and after the application framework module receives the information of successful registration, the application framework module sends a call instruction to the communication processor, and after receiving the call instruction, the communication processor initiates a call to the first target network currently registered.

The specific implementation of step S715 may refer to step S609 in the embodiment shown in fig. 6, and is not described again.

S716, issuing a command for searching the second target network.

Step S716 may be specifically performed by the application framework module.

In some embodiments, the second target network may be any network provided by an operator that supports the target emergency number and is different from the operator of the first target network.

Continuing with the example of fig. 4b, when the calling number is 112, the operator supporting the number includes china mobile and china unicom, and if the first target network is a network of 3G standard provided by china mobile, the second target network may be a network of 3G standard provided by china unicom, that is, the second target network may be a network whose PLMN identifier is 46001.

The command in step S716 may include a communication technology standard corresponding to the second target network, for example, the command in step S716 may be AT + evadsode = UMTS, where UMTS is a communication technology standard of a 3G network provided by china unicom, and therefore, by sending the command to the communication processor, the communication processor may search for the 3G network of china unicom, that is, the network whose PLMN is identified as 46001.

S717, searching for a second target network.

Step S717 may specifically be performed by the communication processor.

The process from step S716 to step S717 corresponds to step S608 of the embodiment shown in fig. 6.

In some alternative embodiments, information about the network supporting the target emergency number may also be stored by the communication processor. In this case, the application framework module may not issue a command to search for a network, but the communication processor may search for a corresponding network based on information about a network supporting the target emergency number by itself.

For example, the communication processor may record PLMNs 46000 and 46001 of a network supporting the target emergency number, and after determining that the operator of the current network does not support the target emergency number, the communication processor sequentially searches for a first target network having a PLMN of 46000 and a second target network having a PLMN of 46001, and then registers with the network in which the search is successful and initiates a call.

S718, register to the second target network and initiate a call.

Step S718 may be specifically executed by the communication processor.

In step S718, the communication processor may register with the second target network first, and after the registration is successful, the communication processor feeds back information of successful registration to the application framework module, and after the application framework module receives the information of successful registration, the application framework module sends a call instruction to the communication processor, and after receiving the call instruction, the communication processor initiates a call to the currently registered second target network.

The specific implementation of step S718 can refer to step S609 in the embodiment shown in fig. 6, and is not described again.

It should be noted that the above flow is only one example of the method for emergency call. In some alternative embodiments, the number of networks supporting the target emergency number may not be limited to 2, for example, there may be 3 or more networks supporting the target emergency number, and then the electronic device may search each network supporting the target emergency number one by one according to the above steps, and register and initiate a call to any network supporting the target emergency number after searching the network supporting the target emergency number.

An embodiment of the present application provides an electronic device including a memory and one or more processors.

The memory is for storing a computer program.

One or more processors are configured to execute a computer program, in particular to implement the method for emergency call provided by any of the embodiments of the present application.

Embodiments of the present application further provide a computer storage medium for storing a computer program, where the computer program is specifically configured to implement the method for emergency call provided in any embodiment of the present application when executed.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

The embodiments of the present application relate to a plurality of numbers greater than or equal to two. It should be noted that, in the description of the embodiments of the present application, the terms "first", "second", and the like are used for distinguishing the description, and are not to be construed as indicating or implying relative importance or order.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for emergency calling, adapted for an electronic device accessing a 4G or 5G network, the method comprising:

obtaining an instruction for an emergency call;

if the 4G or 5G network does not support the IP multimedia subsystem emergency call, falling back to the 2G network or the 3G network;

if the calling number is the target emergency number, comparing a Public Land Mobile Network (PLMN) identifier of the 2G Network or the 3G Network with a preset PLMN identifier of an operator which does not support the target emergency number to determine whether the current operator supports the target emergency number;

if the current operator supports the target emergency number, initiating an emergency call in the 2G network or the 3G network;

after searching the first target network, registering with the first target network and initiating an emergency call in the first target network.

2. The method of claim 1, further comprising:

3. The method of any one of claims 1-2, wherein determining whether the outgoing number is a preset target emergency number comprises:

4. The method of claim 3, wherein the target emergency number is obtained by the electronic device from a cloud.

5. The method of claim 4, further comprising:

sending the geographic position of the electronic equipment to the cloud;

6. The method of claim 1, further comprising:

if the 4G or 5G network supports the IP multimedia subsystem emergency call, the 4G or 5G network initiates the emergency call.

7. The method of claim 1, further comprising:

8. An electronic device, characterized in that the electronic device comprises: one or more processors and memory;

the memory is used for storing one or more programs;

the one or more processors are configured to execute the one or more programs to cause an electronic device to perform the method of emergency calling according to any of claims 1 to 7.

9. A computer storage medium storing a computer program which, when executed, is adapted to implement a method of emergency calling according to any one of claims 1 to 7.