CN115988684A

CN115988684A - Emergency call method, system, device, electronic equipment and storage medium

Info

Publication number: CN115988684A
Application number: CN202211702622.XA
Authority: CN
Inventors: 黄志强
Original assignee: Ruiling Wireless Co ltd
Current assignee: Ruiling Wireless Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-04-18

Abstract

The application relates to an emergency call method, a system, a device, an electronic device and a storage medium, wherein the method comprises the following steps: generating an origination message and starting a first redial timer in response to an emergency call trigger event; the call initiating message is used for initiating an emergency call with a public safety answering point; the first redial timer configures a first redial duration; acquiring a call establishment response of an emergency call; if the call establishment response indicates that the communication establishment fails, emergency call redial is started according to a preset redial rule within the first redial duration so that the emergency call is established successfully. The method can respond to an emergency call triggering event to initiate an emergency call, and if the call establishment response indicates that the communication establishment with the public safety answering point fails, emergency call redial is started according to a preset redial rule, so that the emergency call between the vehicle-mounted system and the public safety answering point is automatically established, the emergency rescue can be timely responded and processed, and the safety performance of the vehicle-mounted system is improved.

Description

Emergency call method, system, device, electronic equipment and storage medium

Technical Field

The present application relates to the field of emergency call technologies, and in particular, to an emergency call method, system, apparatus, electronic device, and storage medium.

Background

Since the 90 s of the 20 th century, cars and communications were brought together, and cars were successively equipped with 2G, 3G, and 4G-based mobile communication devices. With these devices, services such as navigation and information announcement based on communication capability are gradually implemented. After having the 2G cellular communication capability, the intelligent transportation has made a significant thing in terms of solving traffic safety, namely an on-board emergency Call system (eCall, also often called "emergency rescue"). eCall uses mobile phone and satellite positioning function, after traffic accident happens, eCall establishes telephone connection with the unified number (such as 122 in China and 112 in European Union) of the nearest rescue center by using the capability of 2G and 3G networks in mobile network supporting circuit domain emergency call, and besides voice connection, the vehicle-mounted eCall system also reports and transmits information about accident site, accident type and vehicle.

The eCall has the core idea that the position information of a vehicle is acquired by using a vehicle-mounted satellite positioning system, after an accident occurs, a sensor detects and triggers automatic alarm or a user manually initiates an emergency call to alarm, and when voice call is established, information such as the position of the vehicle, the driving direction, the license plate and the number of vehicles, the number of passengers and the like is automatically sent to a PSAP (public safety answering point) of a rescue center as a minimum data set (eCall minimum set of data, MSD for short) so that the rescue center can quickly position the accident vehicle and organize rescue.

Because eCall uses the circuit domain emergency call capability of 2G and 3G networks, the call failure, call drop and the like caused by various factors are inevitable in the call process, once the situation occurs, the conventional common telephone can only be manually redialed, and is not beneficial to the smooth expansion of rescue.

Disclosure of Invention

The application provides an emergency call method, system, device, electronic equipment and storage medium, which are used for solving the problem of how to perform automatic emergency call on a vehicle-mounted system.

In a first aspect, an embodiment of the present application provides an emergency call method, including:

generating an origination message and starting a first redial timer in response to an emergency call trigger event; the call initiating message is used for initiating an emergency call with a public safety answering point; the first redial timer configures a first redial duration;

acquiring a call establishment response of the emergency call;

if the call establishment response indicates that the communication establishment with the public safety answering point fails, emergency call redial is started according to a preset redial rule within the first redial duration so that the emergency call establishment between the vehicle-mounted system and the public safety answering point is successful;

optionally, the establishing communication failure comprises a cellular network connection establishment failure;

correspondingly, if the call setup response indicates that the establishment of communication with the public safety answering point fails, the method starts the redialing of the emergency call according to a preset redialing rule within the first redialing duration, and comprises the following steps:

determining that the first redial timer is not overtime, and starting a second redial timer; the second redial timer is configured with a first redial frequency and N second redial durations; n is larger than or equal to 2, the N second redial time lengths are different, and the second redial time length is smaller than the first redial time length;

determining a target second redial duration from the N second redial durations, determining a current redial duration of the second redial timer based on the target second redial duration, controlling redial according to the current redial duration of the second redial timer, adding one to the redial times as a new redial times after redial is finished and fails, and executing the step of determining that the first redial timer is not overtime again and starting the second redial timer until the current redial times is greater than the first redial times of the second redial timer;

optionally, before determining that the first redial timer has not timed out and starting the second redial timer, the method further includes:

judging whether the current redialing times are zero or not;

if the current redialing times are zero, acquiring the current call starting time for starting the first redialing timer;

acquiring current failure time; the current failure time is the time when the cellular network connection is failed to be established;

accordingly, determining a current redial duration of the second redial timer based on the target second redial duration includes:

if the difference between the current failure time and the current call starting time is less than the target second redial time, taking the difference as the current redial time of the second redial timer;

optionally, sorting the N second redial durations, wherein the determining a target second redial duration from the N second redial durations includes:

taking a module by using N for the current redialing times;

determining the target second redial time length from the N sequenced second redial time lengths according to the obtained remainder;

optionally, the failure to establish communication comprises no one listening;

correspondingly, if the call setup response indicates that the establishment of communication with the public safety answering point fails, emergency call redial is started according to a preset redial rule within the first redial duration, including:

acquiring the current redialing times, and judging whether the current redialing times are smaller than the first redialing times or not;

if the current redialing times are less than the first redialing times, starting redialing immediately, adding one to the current redialing times as a new redialing times, executing the step of obtaining the current redialing times again and judging whether the current redialing times are less than the first redialing times or not;

optionally, if the call establishment response indicates that the communication with the public safety answering point is successfully established, the first redial timer is stopped, and the redial times of the second redial timer is reset.

In a second aspect, an embodiment of the present application provides an emergency call system, which includes an in-vehicle system and a public safety answering point;

the vehicle-mounted system is used for responding to an emergency call triggering event, generating a call starting message and starting a first redial timer; the call initiating message is used for initiating an emergency call with the public safety answering point; the first redial timer configures a first redial duration; acquiring a call establishment response of the emergency call; if the call establishment response indicates that the communication establishment with the public safety answering point fails, emergency call redial is started according to a preset redial rule within the first redial duration, so that the emergency call establishment between the vehicle-mounted system and the public safety answering point is successful.

In a third aspect, an embodiment of the present application provides an emergency call device, including:

the response module is used for responding to the emergency call triggering event, generating a call starting message and starting a first redial timer; the call initiating message is used for initiating an emergency call with a public safety answering point; the first redial timer configures a first redial duration;

an obtaining module, configured to obtain a call setup response of the emergency call;

and the redialing module is used for starting emergency call redialing according to a preset redialing rule within the first redialing duration if the call establishment response indicates that the communication establishment with the public safety answering point fails, so that the emergency call establishment between the vehicle-mounted system and the public safety answering point is successful.

In a fourth aspect, an embodiment of the present application provides an electronic device, including: the system comprises a processor, a memory and a communication bus, wherein the processor and the memory are communicated with each other through the communication bus;

the memory for storing a computer program;

the processor is configured to execute the program stored in the memory to implement the emergency call method according to any one of the first aspect.

In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program, when executed by a processor, implements the emergency call method according to any one of the first aspect.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the method provided by the embodiment of the application responds to the emergency call triggering event, generates the call initiating message and starts the first redial timer; the call initiating message is used for initiating an emergency call with a public safety answering point; the first redial timer configures a first redial duration; acquiring a call establishment response of the emergency call; and if the call establishment response indicates that the communication establishment with the public safety answering point fails, starting emergency call redial according to a preset redial rule within the first redial duration so as to enable the vehicle-mounted system to establish the emergency call with the public safety answering point successfully. The method can respond to the emergency call triggering event to initiate the emergency call, and if the call establishment response indicates that the communication establishment with the public safety answering point fails, the emergency call redial is started according to the preset redial rule, so that the emergency call between the vehicle-mounted system and the public safety answering point is automatically established, the emergency rescue can be timely responded and processed, and the safety performance of the vehicle-mounted system is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a system architecture diagram of an emergency call method according to an embodiment of the present application;

fig. 2 is a flowchart illustrating an emergency call method according to an embodiment of the present application;

fig. 3 is a flowchart illustrating an emergency call method in an origination phase according to an embodiment of the present application;

fig. 4 is a flowchart illustrating an emergency call method in a call phase according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of an emergency call device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The method provided in the embodiment of the application can be applied to electronic equipment, the electronic equipment can be specifically a module capable of realizing a communication function or terminal equipment containing the module, and the terminal equipment can be a mobile terminal or an intelligent terminal. The mobile terminal can be at least one of a mobile phone, a tablet computer, a notebook computer and the like; the intelligent terminal can be a terminal containing a wireless communication module, such as an intelligent automobile, an intelligent watch, a sharing bicycle, an intelligent cabinet and the like; the module may be a wireless communication module, such as any one of a 2G communication module, a 3G communication module, a 4G communication module, and a 5G communication module.

The method provided in the embodiment of the present application may also be applied to a system architecture as shown in fig. 1, where in the system architecture, the eCall system includes an IVS (in-vehicle system, also referred to as a vehicle-mounted platform) supporting the eCall function and a PSAP (public safety answering point, i.e., a rescue platform) supporting the eCall function, and the IVS and the PSAP are in communication connection through a cellular network supporting the circuit domain voice service.

The vehicle-mounted system is used for responding to an emergency call triggering event, generating a call starting message and starting a first redial timer; the call initiating message is used for initiating an emergency call with a public safety answering point; the first redial timer configures a first redial duration; acquiring a call establishment response of the emergency call; if the call establishment response indicates that the communication establishment with the public safety answering point fails, emergency call redial is started according to a preset redial rule within the first redial duration, so that the emergency call establishment between the vehicle-mounted system and the public safety answering point is successful.

Next, the emergency call method is described in detail based on the system architecture or the electronic device, the emergency call method is applicable to the IVS in the system architecture and also applicable to the electronic device, as shown in fig. 2, and the emergency call method includes:

step 201, responding to an emergency call triggering event, generating a call initiating message and starting a first redial timer; the call initiating message is used for initiating an emergency call with a public safety answering point; the first redial timer configures a first redial duration.

An emergency call triggering event refers to an event that may trigger an emergency call, such as an event that may be a car malfunction, a crash, a drowning, etc. And responding to an emergency call trigger event, generating a call starting message and starting a first redial timer, wherein the call starting message is information of a first call based on the trigger event, and the first redial timer is used for setting the redial total time, namely the redial total time is a first redial time T1. It should be appreciated that if the emergency call initiated by the origination message results in successful establishment of the emergency call to the IVS and PSAP, then no redial is needed and the first redial timer is stopped.

Step 202, a call setup response for the emergency call is obtained.

The IVS initiates an emergency call with the PSAP based on the origination message, and the IVS may retrieve a call setup response for the emergency call to perform different processing based on the call setup response. The call setup response may occur with either a successful call setup or a failed call setup. If the call is successfully established, the call with the PSAP can be smoothly established, and the emergency rescue can be ensured to be responded in time.

And 203, if the call establishment response indicates that the communication establishment with the public safety answering point fails, starting emergency call redial according to a preset redial rule within the first redial duration so as to enable the emergency call establishment between the vehicle-mounted system and the public safety answering point to be successful.

The method can respond to the emergency call triggering event to initiate the emergency call, and if the call establishment response indicates that the communication establishment with the public safety answering point fails, the emergency call redial is started according to the preset redial rule, so that the emergency call between the vehicle-mounted system and the public safety answering point is automatically established, the emergency rescue can be timely responded and processed, and the safety performance of the vehicle-mounted system is improved.

If the call setup response indicates that the establishment of communication with the public safety answering point fails, redialing is required to enable the establishment of the emergency call between the IVS and the PSAP to be successful, redialing can be performed based on preset redialing rules, and of course, redialing is not unlimited redialing either, and the redialing can be performed within the first redialing duration configured by the first redialing timer.

If the call setup fails, the cellular network connection setup may fail, or the cellular network connection setup may succeed but no one is available.

In the first case, the failure to establish communication is due to a failure to establish a cellular network connection.

In this embodiment, within the first redialing duration, the emergency call redialing is started according to a preset redialing rule, including:

determining that the first redial timer is not overtime, and starting a second redial timer; the second redial timer configures the first redial times and N second redial durations; n is greater than or equal to 2, N second redial time lengths are different, and the second redial time length is less than the first redial time length.

And determining a target second redial time from the N second redial times, determining the current redial time of the second redial timer based on the target second redial time, controlling redial according to the current redial time of the second redial timer, adding one redial time as a new redial time after redial is finished and fails, and executing the steps of determining that the first redial timer is not overtime and starting the second redial timer until the current redial time is greater than the first redial time of the second redial timer.

In this embodiment, it is first determined that the first redial timer is not overtime, that is, the time counted from the start of the first redial timer does not exceed the total time length T1. If the redialing time is not over time, starting a second redialing timer, wherein the second redialing timer can determine a target second redialing time length from different N second redialing time lengths according to requirements, controlling to redial, if the redialing time is not successful, adding one to the redialing times, and performing cyclic redialing until the redialing times is more than the first redialing times set by the second redialing timer. Of course, the target second redial duration may be redetermined from the N second redial durations at each redial to control redial according to the reselected target second redial duration.

In this embodiment, the second redial timer may be configured as a timer that is common to the originating phase and the calling phase, and the second redial timer may also be a timer that is configured for the originating phase and the calling phase respectively, for example, the second redial timer of the originating phase is T2 timer, the second redial timer of the calling phase is T3 timer, and when configured separately, the first redial times may be the originating redial times corresponding to the originating phase T2 tm and the calling redial times corresponding to the calling phase T3 timer, respectively.

The call starting stage refers to a stage where redialing is carried out under the condition that the IVS and the PSAP do not establish communication, and the call stage refers to a stage where the IVS and the PSAP are reconnected under the condition that call is abnormally interrupted after the communication is successfully established. The calling stage and the calling stage are only different in scene, and the emergency calling step is the same.

For example, in the origination phase, N may be 5, when N is 5, the second redial duration includes a second duration T2, a third duration T3, a fourth duration T4, a fifth duration T5, and a sixth duration T6, and T2, T3, T4, T5, and T6 may all be set to different durations, and to conveniently configure the redial interval, T2< T3< T4< T5< T6, and certainly, T6 < T1 is required. The first redial time is a total redial time in a set call starting stage, and may be set to a natural number, which indicates a limited redial of the natural number, for example, setting 10 indicates redial for 10 times, setting 100 indicates redial for 100 times, or may be set to an unlimited redial, that is, redial is performed for a second redial time length within a first redial time length T1, and at this time, the first redial time may be set to 0, which indicates unlimited redial.

In this embodiment, in the call phase, N may be 5, when N is 5, the second redial time period includes a seventh time period T7, an eighth time period T8, a ninth time period T9, a tenth time period T10, and an eleventh time period T11, and T7, T8, T9, T10, and T11 may be set to different time periods, for example, T7< T8< T9< T10< T11, and of course, T11 < T1 is required. The first redialing time is the total redialing time of the set call stage, and may be set to be a natural number, which indicates limited redialing of the natural number, for example, 10 is set to indicate redialing 10 times, 100 is set to indicate redialing 100 times, or may be set to be unlimited redialing, that is, redialing is performed all the time within the first redialing time period T1 according to the second redialing time period, and at this time, the first redialing time may be set to 0 to indicate unlimited redialing.

In this embodiment, a plurality of second redial durations are set, different durations may be selected for redialing as needed in the origination phase, for example, T2 with the shortest duration may be selected first, if a connection cannot be established after a certain number of times, it indicates that the current cellular network quality is poor, an interval duration may be increased appropriately, for example, T3 may be selected, if a connection cannot be established after a certain number of times, T4 may be selected continuously, and of course, the selection of the second redial duration for calling may be as needed without limiting a specific scheme, or T2, T3, T4, T5, and T6 may be selected in a loop in sequence, without limitation. The calling phase and the calling phase have the same setting for the second redial duration, and are not described again.

It should be noted that the first redial duration of the first redial timer may be a preset total duration of the emergency call, and the preset total duration may be considered as a call cycle of the emergency call, and if the emergency call of the IVS and the PSAP is not established yet after exceeding the first redial duration T1, it indicates that the emergency call of the call cycle fails.

It should be noted that the redial timer in the above embodiments is a generic term, and includes any way that can perform timing or timing, and as long as a signal can be output after a set time length is reached, the redial timer can be considered to belong to the category of redial timers.

In one embodiment, before determining that the first redial timer has not expired and starting the second redial timer, the method further comprises: judging whether the current redialing times is zero or not; if the current redialing times are zero, acquiring the current call starting time for starting the first redialing timer; acquiring current failure time; the current failure time is the time when the cellular network connection establishment failed.

Accordingly, determining a current redial duration of the second redial timer based on the target second redial duration includes: and if the difference between the current failure time and the current call starting time is less than the target second redial time, taking the difference as the current redial time of the second redial timer.

In this embodiment, if the current redial number is zero, the current redial duration may be determined based on a difference between the current failure time and the current origination time, so as to align the initial timing times of the first redial timer and the second redial timer, and improve the accuracy of redial.

It should be understood that in any of the above embodiments, after the origination message is generated, the current origination time needs to be recorded, and the redial number is set to zero.

In one embodiment, the N second redial durations are ordered; determining a target second redial duration from the N second redial durations includes: taking a module by using N for the current redialing times; and determining a target second redial time length from the N sorted second redial time lengths according to the obtained remainder.

In this embodiment, each time of redial, a different second redial duration of the second redial timer may be selected, where N is 5 in the above embodiment, and the second redial timer includes T2, T3, T4, T5, and T6 for example, and the second redial durations are sorted, where T2< T3< T4< T5< T6. For example, during redialing, a second redialing duration with longer and longer intervals can be set, a current redialing frequency is modulo 5, for example, the current redialing frequency is 0, and the remainder of the module fetching result is 0, T2 can be selected first, at this time, the redialing frequency (i.e., the number of redialing in the initial calling stage) is 0, if redialing is not successful, the number of redialing in the initial calling is 1, the remainder of the module fetching is 1, T3 is selected to continue redialing, if redialing is not successful, the number of redialing in the initial calling is 2, T4 is selected to continue redialing, and the process can be repeated, i.e., T6 is selected to continue to redial, the number of redialing is 5, the remainder of the module fetching is 0, T2 is selected to redial again, without limitation, thereby avoiding that frequent calls cannot be connected when a signal is not good, and reducing the number of invalid redialing.

For example, T2 is selected when the remainder is 0, and T3 is selected when the remainder is 1, and the like, and the remainder is not particularly limited.

In the second case, the reason for the failure to establish communication is that no one is listening.

In this embodiment, if the call setup response indicates that the establishment of communication with the public safety answering point fails, the method starts the redialing of the emergency call according to a preset redialing rule within a first redialing duration, which includes:

and if the current redialing times are less than the first redialing times, starting redialing immediately, adding one to the current redialing times as a new redialing times, and executing the steps of obtaining the current redialing times and judging whether the current redialing times are less than the first redialing times or not.

In this embodiment, if the first redialing time is unlimited redialing, or limited redialing but the redialing time is less than or equal to the limited redialing time, the redialing is started immediately, and the current redialing time is increased by one, and whether the current redialing time is less than the first redialing time is judged. In this embodiment, because the reason of the communication failure is that no one answers, continuous redialing is required, and a long interval of the second redialing is not required, so that the communication between the IVS and the PSAP can be immediately connected after the PSAP is attended, and the response speed is improved.

In one embodiment, the first redial timer is stopped if the call setup response indicates successful establishment of communication with the public safety answering point, and the number of redials of the second redial timer is reset to 0, so that the method is re-executed to establish communication connection between the IVS and the PSAP after abnormal interruption of the call.

In one embodiment, if the call setup response indicates successful establishment of communication with the public safety answering point, the first redial timer is stopped and the redial times of the second redial timer are reset.

Next, the emergency call method is further described with a specific embodiment, as shown in fig. 3, the emergency call method in the origination phase includes:

in step 301, the IVS configures the relevant timers and redial parameters. The IVS default configuration eCall redial (redial) Timer1 duration T1 (T1 > T6, T1> T11), the initial calling stage redial Timer2 duration T2, T3, T4, T5, T6 (T2 < T3< T4< T5< T6), the duration of the call stage redial Timer3 is T7, T8, T9, T10, T11 (T7 < T8< T9< T10< T11), whether there is limited redial and the number of times of redial (a value greater than 0).

Step 302, when an accident occurs, the IVS triggers an automatic alarm or manually initiates an emergency call eCall. After an accident occurs, a sensor on the IVS detects that an automatic alarm is triggered or a user manually initiates an emergency call eCall.

Step 303, the higher layer application module initiates an origination message to the cellular communication module. An eCall high-level application module on the IVS constructs an eCall origination message and sends the eCall origination message to a cellular communication module on the IVS, records the current origination time T _ MO, records the origination redialing times as 0 and the call redialing times as 0, and starts a redialing Timer1 with the duration as T1.

The cellular communication module attempts to establish a call with the PSAP using the cellular network, step 304. The cellular communication module on the IVS attempts to establish a voice call with the PSAP over the cellular network using a 2G or 3G circuit domain emergency call.

The cellular communication module on the IVS sending a call setup response to the higher layer application module includes, but is not limited to, the following: 1. the call initiation setup fails because the cellular network connection setup fails; 2. the call establishment fails because of no answer; 3. the call origination establishment is successful.

The higher layer application module processes the call setup response (connection setup failure or no-answer) of the cellular communication module, step 305.

And step 306, the high-level application module judges whether redial conditions are met according to different conditions, and decides whether to start a timer to redial or to redial immediately.

Step 307, the redial is successful and the cellular module and PSAP call setup is successful.

Among them, steps 305 to 307 include various processing cases, as follows:

(1) When the eCall higher-level application module on the IVS processes the call establishment response to be a cellular network connection establishment failure, the details are as follows:

if the redial Timer1 has not timed out:

acquiring current time T _ Fail;

if the number of call origination redialing times is 0 and the value of subtracting T _ MO from T _ Fail is less than T2, starting a redialing Timer2, wherein the time length of the Timer is the value of subtracting T _ Fail from T2, and subtracting T _ MO from T2, and the high-level application module waits for the redialing Timer2 to be overtime;

if the number of redialing the initial call is 0 and the value of subtracting T _ MO from T _ Fail is more than or equal to T2, starting redialing immediately, starting an eCall by a high-level application module, constructing an eCall initial call message, sending the eCall initial call message to a cellular communication module on the IVS, and recording the number of redialing the initial call plus 1;

if the number of times of call re-dialing is greater than 0, whether the limited re-dialing is negative (namely infinite re-dialing) is judged, a re-dialing Timer2 is started, the time length of the Timer is a value obtained by taking a module 5 according to the number of times of call re-dialing (the remainder is obtained after a certain number is divided by 5, if the value of the module 5 of 10 is 0, the value of the module 5 of 11 is 1), if the value of the Timer is 0, the time length of the Timer is T2, if the value of the module 5 of 1 is T3, and the like, the high-level application module waits for the time of the re-dialing Timer2 to be overtime;

if the number of the call re-dialing times is larger than 0, whether the limited re-dialing is yes (namely limited re-dialing) or not, and the number of the call re-dialing times is smaller than or equal to the limited re-dialing times, starting a re-dialing Timer2, wherein the time length of the Timer is a value obtained by taking a module of 5 according to the number of the call re-dialing times, if the time length of the Timer is 0, the time length of the Timer is T2, if the time length of the Timer is 1, the time length of the Timer is T3, and so on, the high-level application module waits for the time out of the re-dialing Timer 2;

if the number of redialing initial call is more than 0, whether the limited redialing is yes (namely the limited redialing), and the number of redialing initial call is more than the limited redialing number, the redialing is not started, the redialing Timer1 is stopped, the IVS high-level application module waits for receiving an eCall called answering message (namely the PSAP calls the IVS) sent by the cellular communication module, the number of redialing initial call (namely the number of redialing initial call) is reset to be 0, and the step 309 is skipped.

If the redial Timer1 times out: without initiating redial, the IVS upper layer application module waits to receive an eCall called answer message (i.e., PSAP calls IVS) sent by the cellular communication module, resets the number of call redials to 0, and jumps to step 309.

Wherein, the high-level application module waits for the timeout of the redial Timer2 as follows:

if the PASP calls the IVS during the timeout period of the waiting Timer2 (i.e. the Timer2 has not timed out), that is, the eCall is received from the cellular communication module of the IVS (i.e. PSAP calls the IVS), the redialing timers Timer1 and Timer2 are stopped, and the process goes to step 309;

if Timer2 is overtime, redialing is started, the higher-level application module starts eCall redialing, an eCall origination message is constructed and sent to the cellular communication module on the IVS, and the frequency of the origination redialing is recorded and added with 1.

(2) When an eCall high-level application module on the IVS processes the call establishment response and answers nobody, the method comprises the following steps:

if the redial Timer1 has not timed out:

a1, if the limited redialing is not (namely the unlimited redialing), starting the redialing immediately, starting an eCall by a high-level application module, constructing an eCall origination message, sending the eCall origination message to a cellular communication module on the IVS, and recording the origination redialing frequency plus 1;

a2, if the number of the redialing-up times is equal to or less than the limited redialing-up times, the redialing-up is started immediately, a high-level application module starts eCall redialing-up, an eCall origination message is constructed and sent to a cellular communication module on the IVS, and the number of the redialing-up times is recorded and added by 1;

and A3, if the limited redialing is yes (namely the limited redialing) and the number of the initial call redialing times is more than the limited redialing times, not starting the redialing, stopping a redialing Timer1, waiting for receiving an eCall called answering message (namely the PSAP calls the IVS) sent by the cellular communication module by the IVS high-level application module, resetting the number of the initial call redialing times to be 0, and jumping to the step 309.

If the redial Timer1 is out of time, the number of the redial is reset to 0, at this time, the IVS high-level application module waits to receive an eCall called answering message (i.e. PSAP calls IVS) sent by the cellular communication module, the number of the redial is reset to 0, and the process goes to step 309.

The higher layer application module processes the call setup response of the cellular communication module (connection setup success), step 308. The IVS initiates call connection establishment to the PSAP successfully, and the IVS receives a called party of the PSAP. The eCall high-level application module on the IVS processes the call setup response (call setup is successful), stops the redial Timer1, resets the number of call origination redial times to 0, and jumps to step 309.

Step 309, the eCall of IVS and PASP is successfully established, and the conversation or data receiving and sending are normally carried out.

It can be understood that the emergency call method is also applicable to the case of abnormal call interruption.

In the call phase, as in fig. 4:

step 401, the eCall of the IVS and the PASP is successfully established, and the conversation or data receiving and sending are normally carried out. I.e. the origination phase step 309, indicates a call-normal condition.

Step 402, the cellular communication module makes abnormal communication with the PSAP, and sends a call abnormal interrupt message to the high-level application module.

And step 403, the high-level application module initiates a redial waiting timer according to the redial condition, and initiates redial after the timer is overtime.

Step 404, whether the called party of the PASP is received during the waiting period.

The cellular communication module attempts to establish a call with the PSAP using the cellular network, step 405.

The higher layer application module processes the call setup response (connection setup failure or no-answer) of the cellular communication module, step 406.

And step 407, the high-level application module judges whether a redial condition is met according to different conditions, and decides whether to start a timer to redial or to redial immediately.

And step 408, the redialing is successful, and the call establishment between the cellular module and the PSAP is successful.

In step 409, the higher layer application module processes the call setup response of the cellular communication module (connection setup success).

And step 410, establishing an eCall successfully between the IVS and the PASP, and normally carrying out conversation or data receiving and sending.

Wherein, steps 403 to 409 include a plurality of processing conditions, and the specific processing mode refers to the content of the above initial stage.

According to the embodiment, when an eCall is abnormal, the eCall system can complete automatic redialing and call recovery quickly and efficiently, emergency rescue can be timely responded and processed, and the safety performance of the vehicle-mounted system is improved.

Based on the same concept, the embodiment of the present application provides an emergency call device, and the specific implementation of the device may refer to the description of the method embodiment section, and repeated descriptions are omitted, as shown in fig. 5, the device mainly includes:

a response module 501, configured to generate a call initiation message and start a first redial timer in response to an emergency call trigger event; the call initiating message is used for initiating an emergency call with the public safety answering point; the first redial timer configures a first redial duration;

an obtaining module 502, configured to obtain a call setup response of the emergency call;

a redialing module 503, configured to, if the call establishment response indicates that the establishment of communication with the public safety answering point fails, start, within the first redialing duration, an emergency call redialing according to a preset redialing rule, so that the establishment of the emergency call between the vehicle-mounted system and the public safety answering point is successful.

The device can respond to an emergency call triggering event to initiate an emergency call, and if the call establishment response indicates that the communication establishment with the public safety answering point fails, emergency call redial is started according to a preset redial rule, so that the emergency call between the vehicle-mounted system and the public safety answering point is automatically established, the emergency rescue can be timely responded and processed, and the safety performance of the vehicle-mounted system is improved.

Based on the same concept, an embodiment of the present application further provides an electronic device, as shown in fig. 6, the electronic device mainly includes: a processor 601, a memory 602, and a communication bus 603, wherein the processor 601 and the memory 602 communicate with each other via the communication bus 603. The memory 602 stores a program executable by the processor 601, and the processor 601 executes the program stored in the memory 602 to implement the following steps:

generating an origination message and starting a first redial timer in response to an emergency call trigger event; the call initiating message is used for initiating an emergency call with the public safety answering point; the first redial timer configures a first redial duration;

acquiring a call establishment response of the emergency call;

if the call establishment response indicates that the communication establishment with the public safety answering point fails, emergency call redial is started according to a preset redial rule within the first redial time length, so that the emergency call establishment between the vehicle-mounted system and the public safety answering point is successful.

The communication bus 603 mentioned in the above electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus 603 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus.

The Memory 602 may include a Random Access Memory (RAM) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Alternatively, the memory may be at least one storage device located remotely from the processor 601.

The Processor 601 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like, and may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, and discrete hardware components.

In a further embodiment of the present application, there is also provided a computer-readable storage medium having stored therein a computer program which, when run on a computer, causes the computer to perform the steps of the emergency call method described in the above embodiment:

acquiring a call establishment response of the emergency call;

if the call establishment response indicates that the communication establishment with the public safety answering point fails, emergency call redial is started according to a preset redial rule within the first redial duration, so that the emergency call establishment between the vehicle-mounted system and the public safety answering point is successful.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, tapes, etc.), optical media (e.g., DVDs), or semiconductor media (e.g., solid state disks), among others.

It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "...," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An emergency call method, comprising:

acquiring a call establishment response of the emergency call;

and if the call establishment response indicates that the communication establishment with the public safety answering point fails, starting emergency call redial according to a preset redial rule within the first redial duration so as to enable the vehicle-mounted system to establish the emergency call with the public safety answering point successfully.

2. The method of claim 1, wherein the failure to establish communication comprises a cellular network connection establishment failure;

determining that the first redial timer is not overtime, and starting a second redial timer; the second redial timer is configured with a first redial frequency and N second redial durations; n is greater than or equal to 2, the N second redial time lengths are different, and the second redial time length is less than the first redial time length;

determining a target second redial time from the N second redial times, determining the current redial time of the second redial timer based on the target second redial time, controlling redial according to the current redial time of the second redial timer, adding one redial time as a new redial time after redial is finished and fails, and executing the step of determining that the first redial timer is not overtime and starting the second redial timer until the current redial time is greater than the first redial time of the second redial timer.

3. The method of claim 2, wherein determining that the first redial timer has not expired further comprises, prior to starting a second redial timer:

judging whether the current redialing times are zero or not;

accordingly, determining the current redial duration of the second redial timer based on the target second redial duration includes:

and if the difference between the current failure time and the current call starting time is less than the target second redial time, taking the difference as the current redial time of the second redial timer.

4. The method of claim 2, wherein N of said second redial durations are ordered; the determining a target second redial duration from the N second redial durations includes:

taking a module by using N for the current redialing times;

and determining the target second redial time length from the N sequenced second redial time lengths according to the obtained remainder.

5. The method of claim 2, wherein the failure to establish communication comprises no one listening;

and if the current redialing times are less than the first redialing times, starting redialing immediately, adding one to the current redialing times as a new redialing times, executing the step of obtaining the current redialing times again and judging whether the current redialing times are less than the first redialing times or not.

6. The method of claim 2, wherein if the call setup response 5 indicates successful establishment of communication with the public safety answering Point, stopping the first redial timer,

resetting the redial times of the second redial timer.

7. An emergency call system is characterized by comprising an on-board system and a public safety answering point;

the vehicle-mounted system is used for responding to an emergency call triggering event, generating a call starting message and starting a first redial timer; the call initiating message is used for initiating an emergency call with the public safety answering point; the first redial timer configures a first redial duration; acquiring a call establishment response of the emergency call; and if the call establishment response indicates that the communication establishment with the public safety answering point fails, starting 5 emergency call redial according to a preset redial rule within the first redial time so as to enable the emergency call establishment between the vehicle-mounted system and the public safety answering point to be successful.

8. An emergency call device, comprising:

the response module is used for responding to the emergency call triggering event, generating a call starting message and starting a 0 first redial timer; the call initiating message is used for initiating an emergency call with a public safety answering point; the first redial timer configures a first redial duration;

and the redialing module is used for starting 5 emergency call redialing according to a preset redialing rule within the first redialing duration if the call establishment response indicates that the communication establishment with the public safety answering point fails, so that the emergency call establishment between the vehicle-mounted system and the public safety answering point is successful.

9. An electronic device, comprising: a processor, a memory and a communication bus,

the processor and the memory complete mutual communication through a communication bus;

the memory for storing a computer program;

the processor, executing a program stored in the memory, implementing the emergency call method of any of claims 1-6.

10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the emergency call method according to any one of claims 1 to 6.