Emergency calling method, traffic vehicle device, mobile terminal device, and storage medium

Abstract

Provided are an emergency calling method, a traffic vehicle device, a mobile terminal device, and a storage medium. The emergency calling method comprises: receiving a first emergency call message from a second device, the first emergency call message being a direct communication message and carrying emergency rescue request information of the second device; and sending a second emergency call to a third device, the second emergency call being sent by means of a terrestrial public communication network, a terrestrial dedicated communication network or a non-terrestrial communication network, and carrying the emergency rescue request information.

Description

Emergency call method, traffic vehicle equipment, mobile terminal equipment and storage medium

[0001] This disclosure claims priority to Chinese patent application No. 202410341305.2, filed on March 22, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of communication technology, and in particular to an emergency call method, traffic vehicle equipment, mobile terminal equipment, and storage medium. Background Art

[0003] An emergency call refers to the process of making an emergency call to a nearby public service answering point (PSAP) to request help in a critical situation. For example, when a user is in an accident while riding in a vehicle, an emergency call can be made through the vehicle's equipment. Taking the vehicle as an example, an emergency call can be made through the vehicle's emergency call (eCall) system. For another example, in the event of an accident, a user can make an emergency call through the mobile terminal device they carry. Summary of the Invention

[0004] In a first aspect, an embodiment of the present disclosure provides an emergency call method, applied to a first device. The emergency call method includes:

[0005] receiving a first emergency call message from a second device, where the first emergency call message is a direct communication message and carries emergency rescue request information of the second device;

[0006] A second emergency call is sent to a third device, where the second emergency call is sent via a terrestrial public communication network, a terrestrial dedicated communication network, or a non-terrestrial communication network and carries emergency rescue request information.

[0007] In a second aspect, an embodiment of the present disclosure provides another emergency call method, which is applied to a second device. The emergency call method includes:

[0008] When an emergency call service of the second device is triggered, detecting a communication network connection of the second device;

[0009] When the second device cannot access the emergency call service, a first emergency call message is sent; the first emergency call message is a direct communication message and carries the emergency rescue request information of the second device.

[0010] In a third aspect, an embodiment of the present disclosure provides an emergency call device. The emergency call device includes: a receiving module and a sending module;

[0011] A receiving module, configured to receive a first emergency call message from a second device, where the first emergency call message is a direct communication message and carries emergency rescue request information of the second device;

[0012] The sending module is used to send a second emergency call to a third device, where the second emergency call is sent via a terrestrial public communication network, a terrestrial dedicated communication network or a non-terrestrial communication network and carries emergency rescue request information.

[0013] In a fourth aspect, an embodiment of the present disclosure provides another emergency call device. The emergency call device includes: a detection module and a sending module;

[0014] a detection module, configured to detect a communication network connection of the second device when an emergency call service of the second device is triggered;

[0015] The sending module is used to send a first emergency call message when the second device cannot access the emergency call service; the first emergency call message is a direct communication message and carries the emergency rescue request information of the second device.

[0016] In a fifth aspect, an embodiment of the present disclosure provides a traffic vehicle device having a C-V2X direct communication module and / or a DSRC direct communication module, and the traffic vehicle device is used to execute the emergency call method as described in the first aspect or the second aspect above.

[0017] In the sixth aspect, an embodiment of the present disclosure provides a mobile terminal device having a C-V2X direct communication module and / or a DSRC direct communication module, and the traffic vehicle device is used to execute the emergency call method as described in the first or second aspect above.

[0018] In a sixth aspect, an embodiment of the present disclosure provides a roadside device having a C-V2X direct communication module and / or a DSRC direct communication module, and the roadside device is used to execute the emergency call method as described in the first or second aspect above.

[0019] In a seventh aspect, an embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the emergency call method as described in the first or second aspect above is implemented.

[0020] In an eighth aspect, an embodiment of the present disclosure provides a computer program product comprising computer instructions, which, when executed by a processor, implements the emergency call method as described in the first or second aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of an IP multimedia subsystem emergency call system based on 4G and 5G networks according to some embodiments.

[0022] FIG2 is a schematic diagram of an emergency call system according to some embodiments.

[0023] FIG3A is a schematic diagram of another emergency call system according to some embodiments.

[0024] FIG3B is a schematic diagram of yet another emergency call system according to some embodiments.

[0025] FIG4 is a flowchart of an emergency call method according to some embodiments.

[0026] FIG5 is a schematic diagram of an emergency call scenario according to some embodiments.

[0027] FIG6 is a schematic diagram of another emergency call scenario according to some embodiments.

[0028] FIG7 is a schematic diagram of yet another emergency call scenario according to some embodiments.

[0029] FIG8 is a schematic diagram of yet another emergency call scenario according to some embodiments.

[0030] FIG9 is a flowchart of another emergency call method according to some embodiments.

[0031] FIG10 is a schematic diagram showing the composition of an emergency call device according to some embodiments.

[0032] FIG11 is a schematic diagram showing the composition of another emergency call device according to some embodiments.

[0033] FIG12 is a schematic structural diagram of an emergency call device according to some embodiments. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0035] In the description of this disclosure, unless otherwise specified, " / " means "or". For example, A / B can mean A or B. "And / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: only A, A and B, and only B. In addition, "at least one" means one or more, and "a plurality" means two or more. Expressions such as "first" and "second" do not limit the quantity and execution order, and expressions such as "first" and "second" do not necessarily limit them to be different.

[0036] It should be noted that in this disclosure, expressions such as "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described in this disclosure as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of expressions such as "exemplarily" or "for example" is intended to present the relevant concepts in a detailed manner.

[0037] Currently, emergency call services typically require support from land-based public telecommunications networks. For example, if a user places an emergency call through the vehicle's eCall system during an accident, the eCall system requires the land-based public telecommunications network to initiate the call. The eCall system is a system used by vehicles to automatically or manually call a rescue dispatch center in emergency situations. The eCall system can be triggered automatically. In the event of a collision or rollover, internal vehicle sensors or fault detection components trigger the eCall system, connecting to the PLMN to establish contact with the Public Safety Answering Point (PSAP) and transmitting relevant vehicle information to request assistance. The eCall system can also be triggered manually, such as by pressing the eCall button inside the vehicle or by making a voice call. The eCall system can also be activated manually, such as by using a mobile phone and satellite positioning (or other possible positioning methods), to rapidly transmit critical rescue information such as the accident location, vehicle information, and time of the accident, thereby speeding up rescue efforts and reducing casualties caused by traffic accidents.

[0038] In addition, the eCall system includes the in-band modem eCall (In-band Modem eCall) solution, the next generation eCall (NG-eCall) solution, the Telematics Industry Application Alliance (TIAA) E-Call (TIAA E-Call) solution, etc. These solutions all require the support of terrestrial public communication networks, such as the second generation mobile communication networks (2G), third generation mobile communication networks (3G), long term evolution networks (LTE), and fifth generation mobile communication networks (5G). Satellite phone plus short message services provided by satellite network service providers may also be used to implement eCall emergency calls.

[0039] For example, as shown in Figure 1, Figure 1 shows an architecture diagram of an IP multimedia subsystem (IMS) emergency call system based on 4G and 5G networks. The system includes user equipment, a public safety answering point, a 4G network, a 5G network and an IMS network. As shown in Figure 1, the user equipment needs to access the public safety answering point through the above-mentioned 4G network, 5G network and IMS network. The 4G network includes an evolved universal terrestrial radio access network (E-UTRAN) that provides wireless access services to users, a serving gateway, a packet data network gateway (PGW), a policy and charging rules function (PCRF) network element, a mobility management entity (MME) and a home subscriber server (HSS), etc. The 5G network includes a radio access network (R)AN), an access and mobility management function (AMF) network element, a session management function (SMF) network element, a policy control function (PCF) network element, a user plane function (UPF) network element, a home subscriber server (HSS) / unified data management (UDM) network element, and a UDM network element. Of course, it may also include some other network elements not shown, which are not described in detail in this disclosure.The IMS network includes the location retrieval function (LRF) network element, the proxy-call session control function (P-CSCF) network element, the serving-call session control function (S-CSCF) network element, the emergency call session control function (E-CSCF) network element, the interconnection border control function (IBCF) network element, the breakout gateway control function (BGCF) / media gateway control function (MGCF) network element, etc.

[0040] However, the user device may be unable to access the terrestrial public communication network. For example, the user's requested rescue location is in a blind spot of the communication network, the network connection module of the user's device requesting rescue fails, or other possible situations. Due to the lack of access to the terrestrial public communication network, the emergency call service cannot be completed in time, thereby affecting the rescue speed of the accident vehicle and accident personnel, and increasing the safety risk.

[0041] In view of this, the present disclosure provides an emergency call method, which is applied to a first device, and the method includes: receiving a first emergency call message from a second device, the first emergency call message being a direct communication message and carrying emergency rescue request information of the second device; and sending a second emergency call to a third device, the second emergency call being sent via a land public communication network, a land dedicated communication network, or a non-land communication network, and carrying emergency rescue request information. In this way, the first device can receive the first emergency call message sent by the second device via direct communication, and forward the first emergency call message via the land public communication network, the land dedicated communication network, or the non-land communication network, so as to promptly transmit the rescue request of the accident device and improve the rescue speed. In this way, in the case of being unable to access the emergency call service, such as being in a blind spot of the land public communication network or a communication module failure, the second device can also send a rescue request message via direct communication to assist in completing the emergency rescue service based on the first device, thereby expanding the scope of application of the emergency call system and improving the reliability of the emergency call service.

[0042] As shown in FIG2 , an embodiment of the present disclosure provides an emergency call system. The emergency call system 100 includes a first device 10, a second device 20, and a public safety answering point 30. The first device 10 can access the public safety answering point 30 via a terrestrial public communication network, a terrestrial dedicated communication network, or a non-terrestrial communication network, and the first device 10 and the second device 20 can communicate with each other via direct communication.

[0043] The first device 10 can be a transportation vehicle, a mobile terminal, a roadside unit (RSU), or other equipment. Transportation vehicles can include vehicles such as cars, buses, subways, light rail, and trams; ships such as passenger ships, cargo ships, tankers, fishing boats, and yachts; and aircraft such as passenger planes, cargo planes, and helicopters. The transportation vehicle, or the first device 10, can be a terminal configured in one of the above transportation vehicles, such as an onboard terminal device configured in a vehicle. Mobile terminal devices can also be referred to as terminals, mobile stations, or mobile terminals. Mobile terminal devices can include, for example, mobile phones, tablet computers, desktop computers, laptop computers, handheld computers, notebook computers, ultra-mobile personal computers (UMPCs), and netbooks. Roadside units, also known as roadside units (RSUs), can communicate with onboard devices, for example, obtaining vehicle data information through onboard devices. They are typically deployed along roads and can collaborate with other systems to process and make decisions about vehicle traffic information. Roadside units can help vehicles achieve interoperability and environmental awareness, improve road safety and traffic efficiency, and provide strong support for the implementation of intelligent transportation systems.

[0044] In some embodiments, the first device 10 may also have a direct communication module. When it is unable to access a terrestrial communication network or a non-terrestrial communication network, the first device 10 can communicate with other devices through the direct communication module, for example, receiving a first emergency call message sent by the second device 20 through direct communication.

[0045] The direct communication module can be a cellular vehicle-to-everything (C-V2X) direct communication module and / or a dedicated short-range communications (DSRC) direct communication module. C-V2X technology provides comprehensive information exchange between vehicles (V2V), vehicles and infrastructure (V2I), vehicles and pedestrians (V2P), and vehicles and networks (V2N). For example, the C-V2X direct communication module can be the PC5 communication module of C-V2X. Utilizing the direct communication networking method of C-V2X based on the PC5 interface, it can be flexibly and independently networked without relying on the base stations and core network infrastructure of the roadside mobile network. Therefore, in the absence of access to terrestrial communication networks or non-terrestrial communication networks, communication with other devices can be achieved through the PC5 communication module. In addition, PC5 communication technology is highly mature and the required hardware cost is relatively low, which has practical value. In addition, the first device 10 may also have other similar direct communication modules, such as modules using direct communication technologies such as Bluetooth, Wi-Fi direct (WFD), NearLink, and ZigBee, which are not limited in this disclosure.

[0046] The first device 10 may further include a terrestrial network communication module and / or a non-terrestrial network communication module. The terrestrial network communication module may be a cellular mobile network communication module (such as 2G / 3G / 4G / 5G, etc.), an Ethernet communication module, a wireless local area network (WLAN) communication module, a dedicated communication network (such as optical fiber, optical cable, etc.) communication module, etc. The non-terrestrial network communication module includes, for example, a satellite communication module, etc.

[0047] In addition, the second device 20 may also be a transportation vehicle or a mobile terminal. In some embodiments, the second device 20 may also have a direct communication module. When the second device 20 cannot access a terrestrial communication network or a non-terrestrial communication network, the second device 20 may communicate with other devices through the direct communication module. For example, the second device 20 may broadcast the first emergency call message through the direct communication method.

[0048] The direct communication module of the second device 20 may also be a C-V2X direct communication module and / or a DSRC direct communication module. For example, the second device 20 may have a PC5 communication module. In addition, the second device 20 may also have other similar direct communication modules, such as modules using direct communication technologies such as Bluetooth, Wi-Fi Direct, Starflash, and ZigBee, which are not limited in this disclosure. Of course, the second device 20 may also have a terrestrial network communication module and / or a non-terrestrial network communication module.

[0049] A public safety answering point 30 is a specific facility or location, considered a rescue center, that can handle various emergency calls, including but not limited to fires, medical emergencies, and traffic accidents. Public safety answering points 30 serve as a bridge connecting the public with emergency services and play a vital role in the emergency response system.

[0050] For example, when a user needs to initiate an emergency call service through the second device 20, and the second device 20 cannot access the land public communication network, the land dedicated communication network or the non-land communication network, the second device 20 can send a first emergency call message to the first device 10 through direct communication, so that the first device 10 can access the public safety answering point 30 to forward the first emergency call message of the second device 20 when it can access the land public communication network, the land dedicated communication network or the non-land communication network.

[0051] Of course, if the second device 20 can access the terrestrial public communication network or the non-terrestrial communication network, the second device 20 can directly access the public safety answering point through the terrestrial public communication network or the non-terrestrial communication network and send the first emergency call message.

[0052] In some embodiments, the emergency call system 100 may include multiple second devices 20 , wherein the multiple second devices 20 include an accident second device and at least one proxy second device.

[0053] The second device in the accident may be a device that needs to initiate an emergency call service, such as a terminal device mounted on the accident vehicle, a mobile terminal device carried by the accident personnel, etc. The proxy second device may transmit the first emergency call message between the second device in the accident and the first device in a direct communication manner until the first device receives the first emergency call message. That is, the proxy second device may broadcast the first emergency call message in a cascaded manner until a certain device (i.e., the first device) enters the coverage area of ​​the communication network and is able to access the public safety answering point to forward the first emergency call message of the second device in the accident.

[0054] Exemplarily, as shown in FIG3A , the emergency call system 100 includes a first device 10 , an accident second device 21 , a proxy second device 22 , and a public safety answering point 30 .

[0055] When a user needs to initiate an emergency call service through the accident second device 21, and the accident second device 21 cannot access the terrestrial public communication network, the terrestrial dedicated communication network, or the non-terrestrial communication network, the accident second device 21 can broadcast a first emergency call message through direct communication. The proxy second device 22 can receive the first emergency call message.

[0056] Furthermore, the proxy second device 22 can forward the first emergency call message to the first device 10 through direct communication, so that the first device 10 can access the public safety answering point 30 to forward the first emergency call message of the accident second device 21 when it can access the land public communication network, the land dedicated communication network or the non-land communication network.

[0057] Alternatively, as shown in FIG. 3B , the emergency call system 100 includes a first device 10 , an accident second device 21 , a proxy second device 22 , a proxy second device 22 . . . a proxy second device 2n and a public safety answering point 30 .

[0058] When a user needs to initiate an emergency call service through the accident second device 21, and the accident second device 21 cannot access the terrestrial public communication network, the terrestrial dedicated communication network, or the non-terrestrial communication network, the accident second device 21 can broadcast a first emergency call message through direct communication. The proxy second device 22 can receive the first emergency call message.

[0059] Furthermore, the proxy second device 22 can forward the first emergency call message to other proxy second devices, such as the proxy second device 23, through direct communication. Furthermore, the proxy second device 23 can continue to forward the first emergency call message to other proxy second devices through direct communication until the proxy second device 2n forwards the first emergency call message to the first device 10 through direct communication, so that the first device 10 can access the public safety answering point 30 to forward the first emergency call message of the accident second device 20 when it can access the terrestrial public communication network, the terrestrial dedicated communication network or the non-terrestrial communication network.

[0060] It is understandable that the system architecture shown in FIG2 does not constitute a limitation on the embodiments of the present disclosure, and it may include more or fewer devices or components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0061] The method provided by the present disclosure is introduced below with reference to the accompanying drawings.

[0062] As shown in FIG4 , an embodiment of the present disclosure provides an emergency call method, which is applied to a first device. The method includes: S101 to S102 .

[0063] S101: Receive a first emergency call message from a second device. The first emergency call message is a direct communication message and carries emergency rescue request information of the second device.

[0064] In some embodiments, the emergency rescue request information includes at least one of the following:

[0065] The equipment identification of the second equipment, accident location information, accident type information, and information of persons to be rescued.

[0066] The device identifier of the second device is used to uniquely identify the second device. For example, the device identifier of the second device may be a specific mark or code of the second device. This device identifier can be used to obtain information such as the model, serial number, production date, and manufacturer of the second device, thereby quickly identifying the type, location, and usage status of the second device.

[0067] The accident location information includes information describing the detailed location or area where the accident occurred. The accident location information may include a detailed address, coordinates, etc. In one example, when a user sends a first emergency call message through a second device, the accident location information may be the location information of the second device.

[0068] The accident type information includes information used to describe the nature and type of the accident. For example, the accident type information can be traffic accident, fire, explosion, earthquake, etc.

[0069] The information about people to be rescued includes relevant information used to describe people injured or trapped in the accident, such as the location, number, health status, and possible special rescue needs of these people.

[0070] It should be understood that when an accident occurs, obtaining the above-mentioned emergency rescue information will help to quickly locate the accident location, speed up accident handling, and improve rescue efficiency.

[0071] In some embodiments, the first emergency call message may be a C-V2X direct communication message, a DSRC direct communication message, or other possible direct communication messages sent by the second device.

[0072] Exemplarily, when the second device is unable to access the terrestrial communication network or the non-terrestrial communication network, for example, it is in a network coverage blind spot, or the terrestrial communication module and / or the non-terrestrial communication module fails, and thus cannot access the emergency call service, it can broadcast the emergency call message, that is, the above-mentioned first emergency call message, by means of direct communication. Thus, the first device can receive the first emergency call message by means of direct communication. In some embodiments, when the first device detects a communicative device within the communication range, it broadcasts the emergency call message, that is, the above-mentioned first emergency call message, by means of direct communication.

[0073] In one example, the first emergency call message may be used to request rescue of a vehicle carrying the second device, that is, the second device is a vehicle device.

[0074] For example, as shown in FIG5 , taking vehicle A as an example of a vehicle carrying the second device, and the second device being the vehicle-mounted terminal device of vehicle A, in the event of a traffic accident and vehicle A being in a coverage blind spot of the land public communication network, the second device, namely the vehicle-mounted terminal device of vehicle A, can broadcast a first emergency call message so that the vehicle-mounted terminal devices of other vehicles passing by the accident area or the mobile terminal devices of personnel, such as the vehicle-mounted terminal device of vehicle B in FIG5 or the mobile terminal devices of personnel in vehicle B, can receive the first emergency call message through direct communication. Furthermore, in the event that vehicle B enters the coverage area of ​​the land public communication network, the first emergency call message can be forwarded to the public safety answering point through the land public mobile communication network to help the second device request rescue.

[0075] In some embodiments, the first emergency call message is used to request rescue of a vehicle carrying the second device. In addition to the device identification of the second device, accident location information, accident type information, and information about the person to be rescued, the emergency rescue request information also includes at least one of the following:

[0076] The vehicle identification, vehicle status information, vehicle power information, emergency call trigger type, vehicle trajectory information before the accident, vehicle speed information before the accident, and vehicle passenger number information of the transportation vehicle equipped with the second device.

[0077] The vehicle identification of the vehicle carrying the second device is used to uniquely identify the vehicle. Taking the vehicle as an example, the vehicle identification of the vehicle can be the vehicle license plate number or other information that can uniquely identify the vehicle.

[0078] The vehicle status information may include information used to describe the working status of the transportation vehicle carrying the second device, such as the vehicle throttle, brake, steering, acceleration, tire pressure status, etc.

[0079] The vehicle power information may include information describing the power system or power type of the transportation vehicle carrying the second device, such as fuel-powered, electric-powered, hybrid-powered, engine displacement, motor power, power battery voltage and capacity, etc. In some embodiments, the vehicle power information may also include power-related information such as fuel / electricity level and engine / motor status.

[0080] The emergency call trigger type may include information used to describe the reason or type of triggering the emergency call system of the vehicle equipped with the second device, such as collision accident triggering, driver emergency braking triggering, vehicle failure automatic triggering, passenger manual triggering, etc.

[0081] The vehicle trajectory information before the accident may include information describing the movement path and position change record of the vehicle carrying the second device. For example, the vehicle's route information recorded by the global positioning system (GPS) or other positioning technology in the period before the accident may also include information about the vehicle's turning, acceleration, deceleration, and other movements during that period.

[0082] The vehicle speed information before the accident may include the speed of the vehicle carrying the second device before the accident.

[0083] The information on the number of passengers in the vehicle may include the total number of passengers and drivers in the transportation vehicle carrying the second device.

[0084] It should be understood that this emergency rescue information is also crucial for emergency response. In the event of an accident, it can be used to quickly assess the severity of the accident and quickly develop appropriate rescue plans and response measures, thereby reducing casualties and property losses. Furthermore, this emergency rescue information can provide powerful decision-making support for traffic management departments, helping to improve the overall operational efficiency and safety of the transportation system.

[0085] In another example, the first emergency call message may be used to request a person carrying a second device, that is, the second device is a mobile terminal device.

[0086] For example, when a hiker gets lost in a sparsely populated remote mountainous area, desert, or plateau area where the land public communication network has no coverage, he or she can broadcast the above-mentioned first emergency call message through a mobile terminal device he or she carries, such as a mobile phone, so that other devices located nearby can receive the first emergency call message through direct communication. And when entering the coverage area of ​​the land public communication network or non-land communication network, the first emergency call message can be forwarded to a public safety answering point through the land public mobile communication network or non-land communication network to help the second device request rescue. In some embodiments, after receiving a rescue mission, rescuers can search for the first emergency call signal of the direct communication within the blind spot to quickly locate the hiker.

[0087] For another example, when natural disasters such as earthquakes, floods, and storms occur and public communication facilities are completely destroyed, the terrestrial public communication network cannot be used normally. At this time, the rescued people in the disaster area can also broadcast the above-mentioned first emergency call message through the mobile terminal devices they carry, such as mobile phones, so that nearby rescue equipment (such as drones and rescue vehicles) can receive the first emergency call message through direct communication. These rescue equipment will centrally forward the first emergency call message to the rescue center when they are connected to the terrestrial public communication network (for example, entering the vicinity of an emergency communication support vehicle) or a non-terrestrial communication network (such as a satellite network). In some embodiments, rescue equipment such as drones and rescue vehicles can also search for the first emergency call signal of the direct communication to quickly locate the rescued people.

[0088] In some embodiments, the second device includes an accident second device and at least one proxy second device. The first device can receive a first emergency call message from the proxy second device, where the first emergency call message is generated based on a direct communication message for an emergency call sent by the accident second device and carries emergency rescue request information from the accident second device.

[0089] For example, taking the vehicle carrying the second accident device as an example, the second accident device is the vehicle-mounted terminal device of the vehicle. In the event of a traffic accident and the vehicle is in a coverage blind spot of the land public communication network, the second accident device can broadcast a first emergency call message so that the vehicle-mounted terminal devices of other vehicles passing by the accident area or the mobile terminal devices of personnel, that is, the proxy second device, can receive the first emergency call message through direct communication. Furthermore, the proxy second device can forward the first emergency call message to the first device through direct communication. When the first device enters the coverage area of ​​the land public communication network, the first emergency call message can be forwarded to the public safety answering point through the land public mobile communication network to help the second accident device request rescue.

[0090] In some embodiments, the proxy second device or the first device may also refuse to forward the first emergency call message. In this case, the accident second device may continue to broadcast the first emergency call message to make other proxy second devices agree to forward the first emergency call message of the accident second device.

[0091] Alternatively, the proxy second device or the first device may be preset to agree to forward the first emergency call message.

[0092] Alternatively, the proxy second device or the first device may determine whether to forward the first emergency call message according to a user's selection.

[0093] In some embodiments, the proxy second device or the first device may further send a feedback message to the second device, the feedback message being used to indicate that the first device agrees to assist in sending the second device's emergency rescue request information. Alternatively, the feedback message being used to indicate that the first device refuses to assist in sending the second device's emergency rescue request information.

[0094] S102: Send a second emergency call to a third device, where the second emergency call is sent via a terrestrial public communication network, a terrestrial dedicated communication network, or a non-terrestrial communication network and carries emergency rescue request information.

[0095] For example, when the first device is connected to a terrestrial public communication network or a satellite communication network, it can send a second emergency call to a third device via the terrestrial public communication network or the satellite communication network. The second emergency call can be a voice proximity call or an emergency call short message. Alternatively, when the first device is a roadside device and is connected to a terrestrial dedicated communication network, it can send a second emergency call to a third device via the terrestrial dedicated communication network. In this case, the second emergency call can be an emergency call short message.

[0096] In some embodiments, in addition to the emergency rescue request information, the second emergency call also carries at least one of the following:

[0097] The device identification of the first device, the location information of the first device, the user contact information of the first device, the vehicle identification of the vehicle carrying the first device, and the identification information of the accident status of the first device.

[0098] The device identifier of the first device is used to uniquely identify the first device. For example, the device identifier of the first device may be a specific mark or code of the first device. This device identifier can be used to obtain information such as the model, serial number, production date, and manufacturer of the first device, thereby quickly identifying the type, location, and usage status of the first device.

[0099] The location information of the first device includes information for describing a detailed location or area where the first device is located.

[0100] The user contact information of the first device may include contact information of a user associated with the device. For example, if the vehicle carrying the first device is a vehicle, the user contact information of the first device may include the vehicle owner's mobile phone number. Alternatively, if the first device is a mobile terminal device, the user contact information of the first device may include the mobile phone number of the user of the mobile terminal device.

[0101] The vehicle identification of the vehicle carrying the first device is used to uniquely identify the vehicle. Taking the vehicle as an example, the vehicle identification of the vehicle can be the vehicle license plate number or other information that can uniquely identify the vehicle.

[0102] The first device's identification information of the accident status may be relevant information used by the first device to identify the current accident status and verify the first emergency call message after receiving the first emergency call message, for example, the accident environment, personnel status, and other information identified by the first device.

[0103] In some embodiments, the second emergency call may be used to establish a voice call for the emergency call, or the second emergency call may be used to transmit a message carrying rescue request data.

[0104] In some embodiments, the third device may be a communication device of a public safety answering point.

[0105] In some embodiments, the first device includes a traffic vehicle device, a mobile terminal device, or a roadside device.

[0106] In addition, when the first device is a traffic vehicle device or a mobile terminal device, the second emergency call is sent via a terrestrial public communication network or a non-terrestrial communication network. When the first device is a roadside device, the second emergency call is sent via a terrestrial dedicated communication network.

[0107] In one implementation, when the first device is a vehicle device or a mobile terminal device, the first device may detect the communication network connection of the first device and, upon detecting that the first device has successfully connected to a terrestrial public communication network or a non-terrestrial communication network, send a second emergency call to the third device.

[0108] For example, the first device is a transportation vehicle or a mobile terminal device, and the first device has a terrestrial public communication function. In this case, the second emergency call can be sent through the terrestrial public communication network. Alternatively, the first device has a non-terrestrial communication function. In this case, the second emergency call can be sent through the non-terrestrial communication network. Alternatively, the first device has both terrestrial public communication and non-terrestrial communication functions. In this case, the second emergency call can be sent through the terrestrial public communication network or the non-terrestrial communication network.

[0109] In one example, as shown in Figure 6, taking vehicle A as the vehicle carrying the second device, vehicle A is located in a coverage area of ​​the terrestrial public communication network but not a satellite communication network. However, vehicle A is not equipped with a satellite communication module, while vehicle B is equipped with a satellite communication module. In this case, the onboard terminal device of vehicle A can broadcast a first emergency call message. Upon receiving the first emergency call message via direct communication, the onboard terminal device of vehicle B can directly forward the first emergency call message to the public safety answering point via the satellite network to assist the second device in requesting rescue.

[0110] Alternatively, as shown in Figure 7, vehicle A is in the coverage blind spot of the terrestrial public communication network and the coverage blind spot of the satellite communication network. Therefore, when the on-board terminal device of vehicle B receives the first emergency call message through direct communication, it can forward the first emergency call message to the public safety answering point through the satellite network when it enters the coverage area of ​​the satellite communication network to help the second device request rescue.

[0111] Alternatively, vehicle B is equipped with a satellite communication module and a land public communication module. Thus, vehicle B can forward the first emergency call message to a public safety answering point via a satellite network or a land public communication network to help the second device request rescue.

[0112] In some embodiments, if the first device has both terrestrial public communication capabilities and non-terrestrial communication capabilities, the second emergency call can be sent based on the communication network that the first device first accesses. For example, after leaving the accident area, the first device first enters an area covered by terrestrial public communication, and if the area is not covered by a non-terrestrial communication network, the first device can send the second emergency call via the terrestrial public communication network.

[0113] Alternatively, when the first device enters a terrestrial public communication coverage area and the area is covered by a non-terrestrial communication network, the first device may send a second emergency call through the terrestrial public communication network or the non-terrestrial communication network.

[0114] In one example, when the first device enters a terrestrial public communication coverage area and the area is covered by a non-terrestrial communication network, the first device can send the second emergency call through the terrestrial public communication network. It should be understood that sending the second emergency call directly through the terrestrial public communication network can reduce the cost of sending the second emergency call compared to the non-terrestrial communication network.

[0115] In another example, the first device may receive a selection instruction and then send a second emergency call to the third device via the communication network indicated by the selection instruction. The selection instruction is used to indicate the communication network used to send the second emergency call, which may be a terrestrial public communication network or a non-terrestrial communication network. It should be understood that the selection instruction may be input by the user, and the communication network for the second emergency call may be selected by the user.

[0116] In another implementation, the first device is a roadside device, and the first device can send the second emergency call to the third device through the land dedicated communication network.

[0117] For example, as shown in Figure 8, taking vehicle A as an example, the second device is the on-board terminal device of vehicle A. In the event of a traffic accident and vehicle A is in a coverage blind spot of the land public communication network, the second device, that is, the on-board terminal device of vehicle A, can broadcast a first emergency call message, and the roadside device C can receive the first emergency call message through direct communication, and then forward the first emergency call message to the public safety answering point through the land dedicated communication network to help the second device request rescue.

[0118] It should be noted that since the roadside equipment is usually set up by the highway department, the roadside equipment will be connected to the highway system network by a fixed communication network (such as optical fiber), that is, the roadside equipment has a land-based dedicated communication function, and the second emergency call is sent through the land-based dedicated communication network. The roadside equipment and the roadside infrastructure usually communicate with each other through optical fiber + cable + routing switching / transmission equipment. The land-based dedicated communication network is a private network within the highway department and can be used by the roadside equipment. At this time, if the roadside system of the highway department can provide a proxy emergency call function, after the roadside equipment receives the first emergency call message, it can initiate an emergency call through the roadside system agent, that is, send a second emergency call. Alternatively, the roadside system of the highway department does not provide a proxy emergency call function. At this time, the roadside equipment can directly send the second emergency call through the land-based dedicated communication network.

[0119] In the case where the first device is a roadside device, the second emergency call may be a message carrying rescue request data.

[0120] Based on the technical solution provided by the present disclosure, a first device can receive a first emergency call message sent by a second device via direct communication, and forward the first emergency call message via a terrestrial public communication network, a terrestrial dedicated communication network, or a non-terrestrial communication network to promptly transmit the rescue request of the troubled device, thereby improving the rescue speed. In this way, in situations where emergency call services are inaccessible, such as in a blind spot of the terrestrial public communication network or a communication module failure, the second device can also send a rescue request message via direct communication to assist in completing the emergency rescue service based on the assistance of the first device, thereby expanding the scope of application of the emergency call system and improving the reliability of the emergency call service.

[0121] In some embodiments, the present disclosure further provides another emergency call method, which is applied to a second device. As shown in FIG9 , the method includes: S201 to S202 .

[0122] In S201 , when an emergency call service of a second device is triggered, a communication network connection of the second device is detected.

[0123] In some embodiments, the second device is a transportation vehicle device or a mobile terminal device.

[0124] In some embodiments, the emergency rescue request information includes at least one of the following:

[0125] The equipment identification of the second equipment, accident location information, accident type information, and information of persons to be rescued.

[0126] In some embodiments, the first emergency call message is used to request rescue of a vehicle carrying the second device, and the emergency rescue request message further includes at least one of the following:

[0127] The vehicle identification, vehicle status information, vehicle power information, emergency call trigger type, vehicle trajectory information before the accident, vehicle speed information before the accident, and vehicle passenger number information of the transportation vehicle equipped with the second device.

[0128] In S202, when the second device cannot access the emergency call service, a first emergency call message is sent. The first emergency call message is a direct communication message and carries emergency rescue request information of the second device, so that the first device that receives the first emergency call message sends a second emergency call to the third device. The second emergency call is sent via a terrestrial public communication network, a terrestrial dedicated communication network, or a non-terrestrial communication network and carries the emergency rescue request information.

[0129] In some embodiments, the second emergency call further carries at least one of the following:

[0130] The device identification of the first device, the location information of the first device, the user contact information of the first device, the vehicle identification of the vehicle carrying the first device, and the identification information of the accident status of the first device.

[0131] In some embodiments, the second device may receive a feedback message from the first device, and then stop sending the first emergency call message if the feedback message is used to feedback that the first device agrees to assist in sending the emergency rescue request information of the second device.

[0132] Alternatively, when the feedback message is used to feedback that the first device refuses to assist in sending the emergency rescue request information of the second device, the first emergency call message is continuously sent.

[0133] In some embodiments, if no feedback message is received from the first device, the second device may continue to send the first emergency call message, where the feedback message is used to provide feedback on whether the first device agrees to assist in sending the emergency rescue request information of the second device.

[0134] In some embodiments, the second device includes an accident second device and at least one proxy second device. When the accident second device cannot access the emergency call service, the accident second device can send a direct communication message of the emergency call to the proxy second device, so that the proxy second device sends a first emergency call message, and the first emergency call message carries the emergency rescue request information of the accident second device.

[0135] In addition, for the detailed description of S201 to S202 , reference can be made to the related description of S101 to S102 mentioned above, which will not be repeated here.

[0136] Based on the technical solution provided by the present invention, the second device can send a rescue request message through direct communication when it is unable to access the emergency call service due to a communication network blind spot or a communication module failure, so as to complete the emergency rescue service with the assistance of other devices, thereby expanding the scope of application of the emergency call system and improving the accessibility and reliability of the emergency call service.

[0137] The above mainly introduces the solution provided by the present disclosure from the perspective of the interaction between various devices or nodes. It is understandable that, in order to realize the above functions, each device or node includes a hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0138] FIG10 is a schematic diagram illustrating the components of an emergency call device according to some embodiments. As shown in FIG10 , the emergency call device 1000 includes a receiving module 1001 and a sending module 1002. In some embodiments, the emergency call device 1000 may further include a processing module 1003.

[0139] The receiving module 1001 is configured to receive a first emergency call message from a second device, where the first emergency call message is a direct communication message and carries emergency rescue request information of the second device;

[0140] The sending module 1002 is configured to send a second emergency call to a third device, where the second emergency call is sent via a terrestrial public communication network, a terrestrial dedicated communication network, or a non-terrestrial communication network and carries the emergency rescue request information.

[0141] In some embodiments, the emergency rescue request information includes at least one of the following: a device identification of the second device, accident location information, accident type information, and information of persons to be rescued.

[0142] In some embodiments, the first emergency call message is used to request rescue of the vehicle carrying the second device, and the emergency rescue request information also includes at least one of the following: vehicle identification, vehicle status information, vehicle power information, emergency call trigger type, vehicle trajectory information before the accident, vehicle speed information before the accident, and vehicle passenger number information.

[0143] In some embodiments, the second emergency call also carries at least one of the following: the device identification of the first device, the location information of the first device, the user contact information of the first device, the vehicle identification of the vehicle carrying the first device, and the identification information of the accident status of the first device.

[0144] In some embodiments, the first device includes a traffic vehicle device, a mobile terminal device or a roadside device. When the first device is a traffic vehicle device or a mobile terminal device, the second emergency call is sent through a land public communication network or a non-land communication network; when the first device is a roadside device, the second emergency call is sent through a land dedicated communication network.

[0145] In some embodiments, the processing module 1003 is configured to detect the communication network connection of the first device. The sending module 1002 is configured to send the second emergency call to a third device when it is detected that the first device has successfully connected to a terrestrial public communication network or a non-terrestrial communication network.

[0146] In some embodiments, a receiving module 1001 is configured to receive a selection instruction, the selection instruction being configured to indicate a communication network to be used for sending the second emergency call, the communication network being the terrestrial public communication network or the non-terrestrial communication network. A sending module 1002 is configured to send the second emergency call to a third device via the communication network indicated by the selection instruction.

[0147] In some embodiments, the second device includes an accident second device and at least one proxy second device; a receiving module is used to receive a first emergency call message from the proxy second device, the first emergency call message is generated based on a direct communication message for an emergency call sent by the accident second device, and carries the emergency rescue request information of the accident second device.

[0148] In some embodiments, the sending module 1002 is further configured to send a feedback message to the second device, where the feedback message is configured to indicate that the first device agrees to assist in sending the emergency rescue request information of the second device.

[0149] In some embodiments, the emergency call device 1000 has a cellular vehicle-to-everything (C-V2X) direct communication module and / or a dedicated short-range communication (DSRC) direct communication module.

[0150] For a more detailed description of the above-mentioned receiving module 1001, processing module 1003 and sending module 1002, as well as a more detailed description of each technical feature and a description of the beneficial effects, please refer to the above-mentioned corresponding method embodiment part, which will not be repeated here.

[0151] FIG11 is a schematic diagram illustrating the composition of another emergency call device according to some embodiments. As shown in FIG11 , the emergency call device 1100 is applied to a user equipment and includes a sending module 1101 and a processing module 1102. In some embodiments, the emergency call device 1100 further includes a receiving module 1103.

[0152] A processing module 1102 is configured to detect a communication network connection of the second device when an emergency call service of the second device is triggered;

[0153] The sending module 1101 is used to send a first emergency call message when the second device cannot access the emergency call service; the first emergency call message is a direct communication message and carries the emergency rescue request information of the second device.

[0154] In some embodiments, the emergency rescue request information includes at least one of the following: a device identification of the second device, accident location information, accident type information, and information of persons to be rescued.

[0155] In some embodiments, the first emergency call message is used to request rescue of the vehicle carrying the second device, and the emergency rescue request information also includes at least one of the following: vehicle identification, vehicle status information, vehicle power information, emergency call trigger type, vehicle trajectory information before the accident, vehicle speed information before the accident, and vehicle passenger number information.

[0156] In some embodiments, the receiving module 1103 is configured to receive a feedback message from the first device. The sending module 1101 is configured to stop sending the first emergency call message if the feedback message is used to provide feedback that the first device agrees to assist in sending the emergency rescue request information of the second device; and to continue sending the first emergency call message if the feedback message is used to provide feedback that the first device refuses to assist in sending the emergency rescue request information of the second device.

[0157] In some embodiments, the sending module 1101 is used to continue sending the first emergency call message when no feedback message is received from the first device, and the feedback message is used to feedback whether the first device agrees to assist in sending the emergency rescue request information of the second device.

[0158] In some embodiments, the second device includes an accident second device and at least one proxy second device, and a sending module is used to send a direct communication message of the emergency call to the proxy second device when the accident second device cannot access the emergency call service, so that the proxy second device sends the first emergency call message, and the first emergency call message carries the emergency rescue request information of the accident second device.

[0159] In some embodiments, the second device is a transportation vehicle device or a mobile terminal device.

[0160] In some embodiments, the second device has a C-V2X direct communication module and / or a DSRC direct communication module.

[0161] For a more detailed description of the sending module 1101, the processing module 1102 and the receiving module 1103, as well as a more detailed description of each technical feature and a description of the beneficial effects, etc., please refer to the corresponding method embodiment section above and will not be repeated here.

[0162] It should be noted that the modules in FIG10 or FIG11 may also be referred to as units. For example, the sending module may be referred to as a sending unit. In addition, in the embodiment shown in FIG10 or FIG11 , the names of the modules may not be those shown in the figure. For example, the sending module may be referred to as a communication module, and the receiving module may be referred to as a communication module.

[0163] If the various units or modules in Figure 10 or Figure 11 are implemented in the form of software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present disclosure is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the various embodiments of the present disclosure. The storage medium for storing computer software products includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0164] In the case of implementing the functions of the aforementioned integrated modules in hardware, an embodiment of the present disclosure provides a schematic structural diagram of an emergency call device. This communication device may be the aforementioned emergency call device 1000 or emergency call device 1100. As shown in Figure 12, the emergency call device 1200 includes: a processor 1202, a communication interface 1203, and a bus 1204. In some embodiments, the emergency call device 1200 may also include a memory 1201.

[0165] Processor 1202 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the contents of this disclosure. Processor 1202 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Processor 1202 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the contents of this disclosure. Processor 1202 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0166] Communication interface 1203 is used to connect to other devices through a communication network. The communication network can be a cellular mobile communication network interface (such as 2G / 3G / 4G / 5G, etc.), a non-terrestrial communication network interface (such as a satellite communication interface, etc.), a direct communication interface (C-V2X cellular direct communication and / or DSRC direct communication interface, etc.), Ethernet, wireless local area network (WLAN), Bluetooth, Star Flash, etc.

[0167] The memory 1201 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0168] As an implementation, the memory 1201 may exist independently of the processor 1202. The memory 1201 may be connected to the processor 1202 via a bus 1204 and used to store instructions or program codes. When the processor 1202 calls and executes the instructions or program codes stored in the memory 1201, the information processing method determination method provided in the embodiments of the present disclosure can be implemented.

[0169] In another implementation, the memory 1201 may also be integrated with the processor 1202 .

[0170] Bus 1204 can be an Extended Industry Standard Architecture (EISA) bus, etc. Bus 1204 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, FIG12 shows only one thick line, but this does not mean that there is only one bus or only one type of bus.

[0171] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the equipment or device is divided into different functional modules to complete all or part of the functions described above.

[0172] The present disclosure also provides a computer-readable storage medium. All or part of the processes in the above-mentioned method embodiments can be completed by computer instructions to instruct the relevant hardware, and the program can be stored in the above-mentioned computer-readable storage medium. When the program is executed, it may include the processes of the above-mentioned method embodiments. The computer-readable storage medium can be the memory of any of the above-mentioned embodiments. The above-mentioned computer-readable storage medium can also be an external storage device of the above-mentioned device or apparatus, such as a plug-in hard disk, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. equipped on the above-mentioned device or apparatus. Further, the above-mentioned computer-readable storage medium can also include both the internal storage unit of the above-mentioned device or apparatus and an external storage device. The above-mentioned computer-readable storage medium is used to store the above-mentioned computer program and other programs and data required by the above-mentioned device or apparatus. The above-mentioned computer-readable storage medium can also be used to temporarily store data that has been output or is to be output. The readable storage medium includes a non-transitory computer-readable storage medium.

[0173] The embodiments of the present disclosure further provide a computer program product, which includes a computer program. When the computer program product is run on a computer, the computer is enabled to execute any one of the methods provided in the above embodiments.

[0174] An embodiment of the present disclosure also provides a traffic vehicle device having a C-V2X direct communication module and / or a DSRC direct communication module for executing the above-mentioned emergency call method.

[0175] An embodiment of the present disclosure provides a mobile terminal device having a C-V2X direct communication module and / or a DSRC direct communication module, which is used to execute the above-mentioned emergency call method.

[0176] An embodiment of the present disclosure provides a roadside device having a C-V2X direct communication module and / or a DSRC direct communication module, which is used to execute the above-mentioned emergency call method.

[0177] Although the present disclosure is described herein in conjunction with various embodiments, in the process of implementing the disclosure for which protection is sought, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple components. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0178] Although the present disclosure has been described in conjunction with features and embodiments thereof, it will be apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present disclosure. Accordingly, this specification and the drawings are merely illustrative of the present disclosure as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present disclosure. Obviously, those skilled in the art may make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is intended to encompass such modifications and variations as would fall within the scope of the claims of the present disclosure and their equivalents.

[0179] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present disclosure shall be covered by the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure shall be subject to the scope of protection of the claims.

Claims

1. An emergency call method, wherein: The method is performed by a first device and includes: receiving a first emergency call message from a second device, where the first emergency call message is a direct communication message and carries emergency rescue request information of the second device; A second emergency call is sent to a third device, where the second emergency call is sent through a terrestrial public communication network, a terrestrial dedicated communication network, or a non-terrestrial communication network and carries the emergency rescue request information.

2. The method according to claim 1, wherein The emergency rescue request information includes at least one of the following: a device identification of the second device, accident location information, accident type information, and information of persons to be rescued.

3. The method according to any one of claims 1 to 2, wherein The first emergency call message is used to request rescue of a vehicle carrying the second device, and the emergency rescue request information further includes at least one of the following: The vehicle identification, vehicle status information, vehicle power information, emergency call trigger type, vehicle trajectory information before the accident, vehicle speed information before the accident, and vehicle passenger number information of the transportation vehicle equipped with the second device.

4. The method according to any one of claims 1 to 3, wherein The second emergency call also carries at least one of the following: The device identification of the first device, the location information of the first device, the user contact information of the first device, the vehicle identification of the vehicle carrying the first device, and the identification information of the accident status of the first device.

5. The method according to any one of claims 1 to 4, wherein The first device includes a traffic vehicle device, a mobile terminal device or a roadside device. When the first device is the traffic vehicle device or the mobile terminal device, the second emergency call is sent through a land public communication network or a non-land communication network; when the first device is the roadside device, the second emergency call is sent through a land dedicated communication network.

6. The method according to claim 5, wherein: In a case where the first device is a traffic vehicle device or a mobile terminal device, the sending the second emergency call to the third device includes: detecting a communication network connection of the first device; In a case where it is detected that the first device successfully accesses a terrestrial public communication network or a non-terrestrial communication network, the second emergency call is sent to the third device.

7. The method according to claim 6, wherein: The sending the second emergency call to the third device includes: receiving a selection instruction, the selection instruction being used to indicate a communication network used for sending the second emergency call, the communication network being the terrestrial public communication network or the non-terrestrial communication network; The second emergency call is sent to the third device through the communication network indicated by the selection instruction.

8. The method according to any one of claims 1 to 7, wherein The second device includes an accident second device and at least one proxy second device; The receiving a first emergency call message from the second device includes: A first emergency call message is received from the at least one proxy second device, where the first emergency call message is generated based on a direct communication message for an emergency call sent by the accident second device and carries emergency rescue request information of the accident second device.

9. The method according to any one of claims 1 to 8, further comprising: A feedback message is sent to the second device, where the feedback message is used to feedback that the first device agrees to assist in sending the emergency rescue request information of the second device.

10. The method according to any one of claims 1 to 9, wherein The first device has a cellular vehicle-to-everything (C-V2X) direct communication module and / or a dedicated short-range communication (DSRC) direct communication module.

11. An emergency call method, wherein: The method is performed by a second device and includes: When the emergency call service of the second device is triggered, detecting the communication network connection of the second device; When the second device cannot access the emergency call service, a first emergency call message is sent; the first emergency call message is a direct communication message and carries emergency rescue request information of the second device.

12. The method according to claim 11, wherein The emergency rescue request information includes at least one of the following: The device identification, accident location information, accident type information, and information of persons to be rescued of the second device.

13. The method according to any one of claims 11 to 12, wherein The first emergency call message is used to request rescue of a vehicle carrying the second device, and the emergency rescue request message further includes at least one of the following: The vehicle identification, vehicle status information, vehicle power information, emergency call trigger type, vehicle trajectory information before the accident, vehicle speed information before the accident, and vehicle passenger number information of the transportation vehicle equipped with the second device.

14. The method according to any one of claims 11 to 13, further comprising: receiving a feedback message from the first device; If the feedback message is used to feedback that the first device agrees to assist in sending the emergency rescue request information of the second device, stop sending the first emergency call message; In a case where the feedback message is used to feed back that the first device refuses to assist in sending the emergency rescue request information of the second device, the first emergency call message is continuously sent.

15. The method according to any one of claims 11 to 14, further comprising: In the case where no feedback message is received from the first device, the first emergency call message is continuously sent, where the feedback message is used to provide feedback on whether the first device agrees to assist in sending the emergency rescue request information of the second device.

16. The method according to any one of claims 11 to 15, wherein The second device includes an accident second device and at least one proxy second device, and sending the first emergency call message when the second device cannot access the emergency call service includes: In the event that the accident second device cannot access the emergency call service, a direct communication message of the emergency call is sent to the at least one proxy second device, so that the at least one proxy second device sends the first emergency call message, and the first emergency call message carries the emergency rescue request information of the accident second device.

17. The method according to any one of claims 11 to 16, wherein The second device is a transportation vehicle device or a mobile terminal device.

18. The method according to any one of claims 11 to 17, wherein The second device has a C-V2X direct communication module and / or a DSRC direct communication module.

19. A transportation vehicle device, wherein: The traffic vehicle equipment has a C-V2X direct communication module and / or a DSRC direct communication module, and the traffic vehicle equipment is used to execute the emergency call method according to any one of claims 1-10 and 11-18.

20. A mobile terminal device, wherein: The mobile terminal device has a C-V2X direct communication module and / or a DSRC direct communication module, and the mobile terminal device is used to execute the emergency call method according to any one of claims 1-10 and 11-18.

21. A roadside device, wherein: The roadside equipment has a C-V2X direct communication module and / or a DSRC direct communication module, and the roadside equipment is used to execute the emergency call method according to any one of claims 1-10 and 11-18.

22. A computer-readable storage medium, wherein: The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the emergency call method according to any one of claims 1 to 18.

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