WO2023137579A1

WO2023137579A1 - Emergency service providing method and apparatus, device, and storage medium

Info

Publication number: WO2023137579A1
Application number: PCT/CN2022/072471
Authority: WO
Inventors: 卢飞; 杨皓睿; 郭雅莉
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2023-07-27
Also published as: CN118235448A

Abstract

The present application relates to the technical field of communications, and discloses an emergency service providing method and apparatus, a device, and a storage medium. The method is performed by a relay terminal. The method comprises: sending a first message, the first message comprising a relay service code (RSC) and a first emergency service indication, and the first emergency service indication being used for indicating that the RSC supports the emergency service. In the method, a relay device sends the RSC to a remote device and it is annotated that the RSC supports the emergency service, so that a remote terminal selects a relay terminal to execute the emergency service.

Description

Emergency business provision method, device, equipment and storage medium

technical field

The embodiments of the present application relate to the technical field of communications, and in particular, to a method, device, device, and storage medium for providing emergency services.

Background technique

U2N (UE-to-network, terminal to network) relay (relay) is to relay and transmit data for remote (remote) UE through a Relay UE (User Equipment, terminal equipment), so that Remote UE can communicate with the network.

Relay Service Code (RSC, relay service code) represents the service. In the L3 (Layer3, layer 3) U2N relay architecture, the core network element configures the corresponding relationship between RSC, DNN (Data Network Name, data network name) and slices for the Relay UE and Remote UE, so that the Remote UE can select the appropriate Relay UE for the service. When the Remote UE needs to use emergency services, the Remote UE needs to select the Relay UE first. In order to enable the Remote UE to select a suitable Relay UE, the core network element needs to configure whether the RSC can provide emergency services to the Relay UE and the Remote UE respectively.

If the core network element cannot configure the RSC corresponding to the emergency service to the Remote UE and/or the Relay UE, the Remote UE cannot select the Relay UE that can provide the emergency service to perform the emergency service.

Contents of the invention

Embodiments of the present application provide a method, device, device, and storage medium for providing emergency services. A relay device can send an RSC to a remote device and mark the RSC as supporting the emergency service, so that the remote terminal can select the relay terminal to perform the emergency service. Described technical scheme is as follows:

According to an aspect of an embodiment of the present application, a method for providing an emergency service is provided, the method is performed by a relay terminal, and the method includes:

sending a first message, where the first message includes a relay service code RSC and a first emergency service indication;

Wherein, the first emergency service indication is used to instruct the RSC to support the emergency service.

According to an aspect of an embodiment of the present application, a method for providing an emergency service is provided, the method is performed by a remote terminal, and the method includes:

receiving a first message sent by a relay terminal, where the first message includes a relay service code RSC and a first emergency service indication, where the first emergency service indication is used to indicate that the RSC supports the emergency service;

If there is an emergency service requirement, establish a connection with the relay terminal, where the relay terminal is determined according to the first emergency service indication.

According to an aspect of an embodiment of the present application, an emergency service providing device is provided, the device is used to implement a relay terminal, and the device includes:

A first sending module, configured to send a first message, where the first message includes a relay service code RSC and a first emergency service indication;

According to an aspect of an embodiment of the present application, an emergency service providing device is provided, the device is used to implement a remote terminal, and the device includes:

The second receiving module is configured to receive a first message sent by a relay terminal, where the first message includes a relay service code RSC and a first emergency service indication, where the first emergency service indication is used to indicate that the RSC supports the emergency service;

The second connection module is configured to establish a connection with the relay terminal when there is an emergency service demand, and the relay terminal is determined according to the first emergency service indication.

According to an aspect of an embodiment of the present application, a terminal device is provided, and the terminal device includes a transceiver;

The transceiver is configured to send a first message, where the first message includes a relay service code RSC and a first emergency service indication;

According to an aspect of an embodiment of the present application, a terminal device is provided, and the terminal device includes a transceiver and a processor connected to the transceiver;

The transceiver is configured to receive a first message sent by a relay terminal, where the first message includes a relay service code RSC and a first emergency service indication, where the first emergency service indication is used to indicate that the RSC supports the emergency service;

The processor is configured to establish a connection with the relay terminal when there is an emergency service demand, and the relay terminal is determined according to the first emergency service indication.

According to an aspect of an embodiment of the present application, a computer-readable storage medium is provided, and a computer program is stored in the storage medium, and the computer program is used for execution by a processor to implement the above-mentioned method for providing emergency services on the relay terminal side, or to implement the above-mentioned method for providing emergency services on the remote terminal side.

According to an aspect of an embodiment of the present application, a chip is provided, the chip includes a programmable logic circuit and/or program instructions, and when the chip is running, it is used to implement the above-mentioned method for providing emergency services on the relay terminal side, or to implement the above-mentioned method for providing emergency services on the remote terminal side.

According to one aspect of the embodiments of the present application, a computer program product or computer program is provided, the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor reads and executes the computer instructions from the computer-readable storage medium, so as to realize the above-mentioned method for providing emergency services on the relay terminal side, or realize the above-mentioned method for providing emergency services on the remote terminal side.

The technical solutions provided in the embodiments of the present application can bring the following beneficial effects:

By sending the first message from the relay terminal to the remote terminal, the first message carries the RSC provided by the relay terminal and the first emergency service indication, and uses the first emergency service indication to instruct the RSC to support the emergency service, so that the remote terminal can establish a connection with the relay terminal to perform emergency services when there is an emergency service demand. In the case that the core network element cannot configure the remote terminal and/or the relay terminal with an RSC supporting emergency services, the remote terminal can select the relay terminal to perform emergency services according to the emergency service indication sent by the relay terminal.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other accompanying drawings can also be obtained based on these drawings without creative work.

FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a network architecture provided by an embodiment of the present application;

FIG. 3 is a system architecture diagram of a Layer 3 U2N relay provided by an embodiment of the present application;

FIG. 4 is a system architecture diagram of a layer-2 U2N relay provided by an embodiment of the present application;

FIG. 5 is a flowchart of a method for providing emergency services provided by an embodiment of the present application;

FIG. 6 is a flowchart of a method for providing emergency services provided by an embodiment of the present application;

FIG. 7 is a flowchart of a method for providing emergency services provided by an embodiment of the present application;

FIG. 8 is a flowchart of a method for providing emergency services provided by an embodiment of the present application;

FIG. 9 is a flowchart of a method for providing emergency services provided by an embodiment of the present application;

FIG. 10 is a flowchart of a method for providing emergency services provided by an embodiment of the present application;

Fig. 11 is a flowchart of a method for providing emergency services provided by an embodiment of the present application;

Fig. 12 is a flowchart of a method for providing emergency services provided by an embodiment of the present application;

Fig. 13 is a block diagram of an emergency service providing device provided by an embodiment of the present application;

Fig. 14 is a block diagram of an emergency service providing device provided by an embodiment of the present application;

Fig. 15 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. Those of ordinary skill in the art know that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

Please refer to FIG. 1 , which shows a block diagram of a communication system provided by an exemplary embodiment of the present application. The communication system may include: a remote terminal 10 , a relay terminal 20 and a network device 30 .

The remote terminal 10 refers to a terminal device that performs sidelink communication with the relay terminal 20 and can then communicate with network devices/other remote terminals via the relay of the relay terminal 20 . The number of remote terminals 10 is generally multiple, and one or more remote terminals 10 may be distributed in a cell managed by each network device 30 . The remote terminal 10 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication functions, as well as various forms of user equipment, mobile stations (Mobile Station, MS) and the like. For convenience of description, the devices mentioned above are collectively referred to as remote terminals.

The relay terminal 20 refers to a terminal device capable of performing sidelink communication with the remote terminal 10 . The number of relay terminals 20 is generally multiple, and one or more relay terminals 20 may be distributed in a cell managed by each network device 30 . The relay terminal 20 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment, mobile stations (Mobile Station, MS) and the like. For convenience of description, the devices mentioned above are collectively referred to as relay terminals.

The network device 30 is a device for providing wireless communication functions for the remote terminal 10 and the relay terminal 20 . The network device 30 may include various forms of macro base stations, micro base stations, relay stations, access points and so on. In systems using different wireless access technologies, the name of the network device 30 may be different, for example, in a 5G NR system, it is called a 5G base station (5G Node B, gNodeB/gNB).

The connection between the remote terminal 10 and the relay terminal 20 is established through a side link, and can communicate with each other through a direct communication interface (such as a PC5 interface). The relay terminal 20 can broadcast network device messages to the remote terminal through the side link, thereby realizing network relay. The remote terminal 10 and the relay terminal 20 directly transmit communication data through the side link, which is different from receiving or sending communication data through network equipment in a traditional cellular system. This transmission process has the characteristics of short delay and low overhead, and is suitable for communication between two terminals with close geographical location (such as vehicle equipment and other peripheral equipment with close geographical location). The network device 30 and the relay terminal 20 communicate with each other through some air technology, such as Uu interface.

In the embodiment of the present application, the terminal devices (including the remote terminal 10 and the relay terminal 20 ) support broadcasting and sending discovery messages, so that other terminal devices can discover themselves by receiving the discovery messages.

The technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Te rm Evolution, LTE) system, LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE (LTE-based access to Unlicensed spectrum (LTE-U) system, NR-U system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), next-generation communication system or others communication systems, etc.

Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, device-to-device (Device to Device, D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication and Internet of Vehicles ( Vehicle to Everything, V2X) system, etc. The embodiments of the present application may also be applied to these communication systems.

Before introducing the technical solution of this application, some background technical knowledge involved in this application will be introduced.

With the continuous development of mobile communication technology applications, NCIS service as a new service form is introduced into the standard to carry out related standardized services.

NCIS services are mainly aimed at applications such as AR (Augmented Reality)/VR (Virtual Reality), games, etc., and have high requirements on service quality such as speed, delay, packet loss rate, and high-speed codec. For example: For VR games, the rate of 10Gbps (Giga bits per second, gigabits per second) needs to be achieved, and the packet loss rate cannot exceed 10E-4. The session established for the NCIS service is an NCIS session, and UEs in the same NCIS session can be considered to form an NCIS group, for example: a team session in a game.

In 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) R17 (Release 17, version 17), the 5G ProSe (Proximity Services, short-distance service) topic is used to design short-distance business communication solutions. ProSe includes NCIS. One of the important scenarios of ProSe is the UE-to-network relay scenario. As shown in Figure 1, the U2N relay transmits data to the Remote UE through a Relay UE, so that the Remote UE can communicate with the network.

FIG. 2 is a schematic diagram of a network architecture provided by an embodiment of the present application. As shown in Figure 2, the 5G network architecture released by the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) standard group includes:

Terminal, access network supporting 3GPP technology (including Radio Access Network, RAN or Access Network, AN), user plane function (User Plane Function, UPF) network element, access and mobility management function (Access and Mobility Management Function, AMF) network element, session management function (Session Management Function, SMF) network element, policy control function (Policy Control Function, PCF) network NE, Application Function (AF) NE, Data Network (DN) NE, Network Slice Selection Function (NSSF) NE, Authentication Server Function (AUSF) NE, and Unified Data Management (UDM) NE.

Those skilled in the art can understand that the 5G network architecture shown in FIG. 5 does not constitute a limitation on the 5G network architecture. During specific implementation, the 5G network architecture may include more or less network elements than shown in the figure, or combine certain network elements. It should be understood that AN or RAN is represented in the form of (R)AN in FIG. 2 .

The terminal can be user equipment (User Equipment, UE), handheld terminal, notebook computer, subscriber unit (Subscriber Unit), cellular phone (Cellular Phone), smart phone (Smart Phone), wireless data card, personal digital assistant (Personal Digital Assistant, PDA) computer, tablet computer, wireless modem (modem), handheld device (handheld), laptop computer (Laptop Computer), cordless phone (C Ordless Phone) or wireless local loop (Wireless Local Loop, WLL) station, machine type communication (Machine Type Communication, MTC) terminal, handheld device with wireless communication function, computing device, processing device connected to a wireless modem, unmanned aerial vehicle, vehicle-mounted device, wearable device, terminal in the Internet of Things, virtual reality device, terminal device in the future 5G network, future evolution of the public land mobile network (Public Land Mobile Network, PLMN) terminal etc.

The access network device is the access device that the terminal accesses to the network architecture through wireless means. It is mainly responsible for wireless resource management, Quality of Service (QoS) management, data compression and encryption on the air interface side. For example: base station NodeB, evolved base station eNodeB, base station in 5G mobile communication system or new generation wireless (New Radio, NR) communication system, base station in future mobile communication system, etc.

The UPF network element, the AMF network element, the SMF network element, and the PCF network element are network elements of the 3GPP core network (referred to as core network elements). UPF network elements can be called user plane functional network elements, which are mainly responsible for the transmission of user data. Other network elements can be called control plane functional network elements, which are mainly responsible for authentication, authentication, registration management, session management, mobility management, and policy control, etc., to ensure reliable and stable transmission of user data.

The UPF network element can be used to forward and receive terminal data. For example, the UPF network element can receive service data from the data network and transmit it to the terminal through the access network device; the UPF network element can also receive user data from the terminal through the access network device and forward it to the data network. Among them, the transmission resource allocated and scheduled by the UPF network element for the terminal is managed and controlled by the SMF network element. The bearer between the terminal and the UPF network element may include: the user plane connection between the UPF network element and the access network device, and the establishment of a channel between the access network device and the terminal. Wherein, the user plane connection is a quality of service (Quality of Service, QoS) flow (flow) that can establish transmission data between the UPF network element and the access network device.

The AMF network element can be used to manage the terminal's access to the core network, such as: terminal location update, network registration, access control, terminal mobility management, terminal attachment and detachment, etc. The AMF network element may also provide storage resources on the control plane for the session of the terminal when providing services for the session, so as to store the session identifier, the SMF network element identifier associated with the session identifier, and the like.

The SMF network element can be used to select the user plane network element for the terminal, redirect the user plane network element for the terminal, assign an Internet Protocol (Internet Protocol, IP) address to the terminal, establish a bearer (also called a session) between the terminal and the UPF network element, modify and release the session, and control QoS.

PCF network elements are used to provide policies to AMF network elements and SMF network elements, such as QoS policies and slice selection policies.

The AF network element is used to interact with the 3GPP core network element to support application-influenced data routing, access network open functions, and interact with the PCF network element for policy control, etc.

The DN can provide users with data services such as the IP Multi-Media Service (IP Multi-Media Service, IMS) network and the Internet. There can be various application servers (Application Server, AS) in the DN, which provide different application services, such as operator services, Internet access or third-party services, etc., and the AS can realize the function of AF.

NSSF is used for the selection of network slices. The functions supported are: select the network slice instance set serving the UE; determine the allowed network slice selection assistance information (Network Slice Selection Assistance Information, NSSAI), and determine the mapping to the contracted single network slice selection assistance information (Single-Network Slice Selection Assistance Information, S-NSSAI) when necessary; determine the configured NSSAI, and determine the contracted S-NSSAI) if necessary NSSAI mapping; determine the AMF set that may be used to query the UE, or determine the list of candidate AMFs based on configuration.

The AUSF is used to receive the request from the AMF to authenticate the terminal, request a key from the UDM, and then forward the issued key to the AMF for authentication processing.

UDM includes functions such as generation and storage of user subscription data, management of authentication data, and supports interaction with external third-party servers.

Fig. 3 is a system architecture diagram of a Layer 3 U2N relay provided by the embodiment of the present application. A PC5 link is established between the remote terminal 10 and the relay terminal 20, and the relay terminal 20 uses a PDU (Protocol Data Unit, protocol data unit) session to relay data from the remote terminal 10 for the remote terminal 10. Since each PDU session has a type, for example: IPv4, IPv6, Ethernet (Ethernet), Unstructured (unstructured). Only data of this type can be transmitted using the corresponding PDU session.

FIG. 4 is a system architecture diagram of a Layer 2 (L2, layer 2) U2N relay provided by an embodiment of the present application. In the Layer 2 U2N relay architecture, the remote terminal 10 and the relay terminal 20 have their own core network elements: AMF, SMF, UPF, etc.

In order to realize the relay communication, the remote terminal 10 and the relay terminal 20 need to obtain necessary configuration parameters before performing the relay communication. The configuration parameters can come from PCF (Policy Control Function, policy control network element) or application server, or the configuration parameters are pre-configured on the terminal or in the SIM card.

Before the Remote UE transmits data, it first finds a suitable Relay UE and establishes a PC5 connection with it. In R17, Relay discovery (relay discovery) can have two methods: Model A (mode A) and Model B (mode B).

Model A is that the Relay UE actively broadcasts the RSC that can provide relay services. For example, as shown in Figure 5, UE1 is a Relay UE, and UE1 broadcasts an announcement message. The announcement message includes the RSC that UE1 can provide relay services. UE2, UE3, and UE4 are Remote UEs. The Remote UE listens to the announcement message broadcast by the Relay UE, and selects the Relay UE to establish a connection according to the RSC in the announcement message.

For Model B, the Remote UE first sends out the RSC it needs. If there is a Relay UE around that can support RSC, the Relay UE will reply to the Remote UE. For example, as shown in Figure 6, UE5 is a Remote UE, UE5 broadcasts a solicitation message, the request message includes the RSC required by UE5, UE2, UE3, and UE4 are Relay UEs, and the Relay UE listens to the request message broadcast by the Remote UE. If the Relay UE can provide the RSC required by the Remote UE, it sends a response message to the Remote UE.

After the discovery process, the Relay UE and the Remote UE establish a PC5 connection.

The Relay Service Code can represent the service. In the L3 U2N relay architecture, the core network element configures the corresponding relationship between RSC, DNN (Data Network Name, and data network name) and slices for the UE, so that the Remote UE can select the appropriate relay for the service. When the Remote UE needs to use emergency services, the Remote UE also needs to select a Relay UE first. In order to enable the Remote UE to select a suitable Relay UE, the core network element also needs to configure whether the RSC can provide emergency services.

Exemplarily, the network element of the core network pre-configures the RSC to the Remote UE and the Relay UE, and indicates whether the RSC supports emergency services. In Model A, the Relay UE broadcasts the RSC. After the Remote UE monitors the RSC, it determines whether the RSC supports emergency services according to the configuration of the core network elements. If it supports the emergency services, the Remote UE can establish a connection with the RelayUE to perform emergency services. In Model B, the Remote UE broadcasts the RSC configured by the network elements of the core network to support emergency services. If the Relay UE can provide the RSC, the Relay UE sends a response message to the Remote UE, and the Remote UE selects a Relay UE from the Relay UEs that sent the response message to establish a connection to perform emergency services.

In the above method, the core network element needs to configure the RSC corresponding to the emergency service for the Remote UE or the Relay UE, but the Remote UE may not be able to configure the RSC corresponding to the emergency service for the Remote UE in some scenarios (for example, the Remote UE is not inserted with a SIM (Subscriber Identity Module, Subscriber Identity Card)). To solve this problem, the embodiment of the present application provides a method for providing emergency services, which can enable the remote terminal to select a relay terminal supporting emergency services to perform emergency services when the network element of the core network cannot configure an RSC supporting emergency services for the remote terminal.

Please refer to FIG. 7 , which shows a flowchart of a method for providing emergency services provided by an embodiment of the present application. The method can be executed by a relay terminal in the communication system shown in FIG. 1 . The method may include the steps of:

Step 210: Send a first message, where the first message includes the RSC and the first emergency service indication.

The first emergency service indication (emergency service indication) is used to instruct the RSC to support emergency services. Exemplarily, the first emergency service indication may also be used to indicate whether the RSC supports emergency services. Or, the first emergency service indication may also be used to indicate the type of emergency service supported by the RSC.

Exemplarily, the first message includes an RSC, and the first emergency service indication is used to indicate that the RSC supports emergency services. Or, the first message may also include multiple RSCs, where each RSC supporting the emergency service corresponds to a first emergency service indication, or, the first emergency service indication is used to indicate at least one RSC supporting the emergency service.

The RSC in the first message is the RSC of the relay service that the relay terminal can provide. When there are multiple relay services that the relay terminal can provide, the relay terminal may send multiple first messages respectively, and each first message includes one RSC. The relay terminal may also send a first message, where the first message includes multiple RSCs.

Exemplarily, when the relay discovery procedure is mode A, the first message is a relay discovery announcement message, and the relay terminal broadcasts the relay discovery announcement message, and the relay discovery announcement message includes the RSC and the first emergency service indication.

In mode A, the relay terminal is an announcer (announcing), and the remote terminal is a monitor (monitoring). Exemplarily, the relay discovery announcement message may also include announcer information (Announcer Info), and the announcer information includes relay terminal information.

Exemplarily, when the relay discovery process is in mode B, the first message is a relay discovery response message. The relay terminal receives the relay discovery request message sent by the remote terminal, where the relay discovery request message includes a second emergency service indication, and the second emergency service indication is used to indicate that the remote terminal has an emergency service demand. In the case that the relay terminal supports the emergency service, the relay terminal sends a relay discovery response message, where the relay discovery response message includes the RSC and the first emergency service indication.

In mode B, the relay terminal is a discoveree, and the remote terminal is a discoverer. Exemplarily, the relay discovery request message can also include discoverer information (Discoverer Info), and the discoverer information includes remote terminal information; the relay discovery response message can also include discoveree information (Discoveree Info), and the discoverer information includes relay terminal information.

Exemplarily, before step 210, the relay terminal may receive the configuration information sent by the core network equipment, the configuration information includes the RSC of the relay service that the relay terminal can provide, and an indication of whether the RSC supports emergency services. Or, if the relay terminal cannot receive the configuration information sent by the core network device, the relay terminal itself indicates that any RSC provided by itself supports emergency services. That is, the relay terminal sends an RSC of any relay service and carries the first emergency service indication.

To sum up, in the technical solution provided by the embodiment of the present application, by sending the first message from the relay terminal to the remote terminal, the first message carries the RSC provided by the relay terminal and the first emergency service indication, and uses the first emergency service indication to instruct the RSC to support the emergency service, so that the remote terminal can establish a connection with the relay terminal and perform emergency services when there is an emergency service demand. In the case that the core network element cannot configure the remote terminal and/or the relay terminal with an RSC supporting emergency services, the remote terminal can select the relay terminal to perform emergency services according to the emergency service indication sent by the relay terminal.

Please refer to FIG. 8 , which shows a flowchart of a method for providing emergency services provided by an embodiment of the present application. The method can be executed by a remote terminal in the communication system shown in FIG. 1 . The method may include the steps of:

Step 310: Receive the first message sent by the relay terminal, where the first message includes the RSC and the first emergency service indication.

Exemplarily, the remote terminal receives a message sent by at least one relay terminal, or, the remote terminal receives at least one message sent by a relay terminal. Among these messages, some messages carry emergency service indications (first emergency service indications).

In mode A, the first message is a relay discovery announcement message. The remote terminal monitors the relay discovery announcement message broadcast by the relay terminal.

Step 320: When there is an emergency service demand, establish a connection with the relay terminal, and the relay terminal is determined according to the first emergency service indication.

The remote terminal learns that the relay terminal can provide the relay service supporting the emergency service according to the first emergency service indication in the first message, and then the remote terminal may select the relay terminal to establish a connection to perform the emergency service.

Exemplarily, the remote terminal selects a relay terminal from at least one relay terminal sending the first emergency service indication, and establishes a connection with it to execute the emergency service.

Exemplarily, an exemplary embodiment of applying the method provided in this application to mode A is given.

Please refer to FIG. 9 , which shows a flowchart of a method for providing emergency services provided by an embodiment of the present application. This method is applied to the communication system shown in FIG. 1 . The method may include the steps of:

Step 401: the relay terminal broadcasts a relay discovery announcement message.

The Relay UE sends a U2N relay discovery Announcement (relay discovery announcement) message; the U2N relay discovery Announcement message includes Announcer Info (used to indicate the information of the announcer), RSC, and emergency service indication (used to indicate that the RSC can provide emergency services).

Relay UE allocates source Layer 2 ID (source layer 2 address) and destination Layer 2 ID (destination layer 2 address) for U2N relay discovery Announcement. The destination Layer 2 ID for sending the U2N relay discovery Announcement message can be a Layer 2 ID with all 1s (layer 2 address) or other Layer 2 IDs.

Exemplarily, the relay terminal allocates a first source layer 2 address and/or a first destination layer 2 address for the relay discovery announcement message; wherein, the first destination layer 2 address is all 1s, or, the first destination layer 2 address is all 0s, or, the first destination layer 2 address is any layer 2 address.

The first source layer 2 address is the source address of the relay discovery announcement message. The first destination layer 2 address is the destination address of the relay discovery announcement message. Exemplarily, the relay terminal assigns a destination address of the relay discovery announcement message, and the remote terminal monitors the relay discovery announcement message on the destination address.

When the Remote UE needs to initiate an emergency service, the Remote UE can select a Relay UE that supports the emergency service to access according to the emergency service indication in the U2N relay discovery Announcement message.

To sum up, the technical solution provided by the embodiment of this application uses the relay terminal to broadcast the relay discovery announcement message, carries the RSC provided by the relay terminal and the first emergency service indication in the relay discovery announcement message, and uses the first emergency service indication to instruct the RSC to support the emergency service, so that the remote terminal can establish a connection with the relay terminal and perform the emergency service when there is an emergency service demand.

Exemplarily, an exemplary embodiment of applying the method provided in this application to mode B is given.

Please refer to FIG. 10 , which shows a flowchart of a method for providing emergency services provided by an embodiment of the present application. This method is applied to the communication system shown in FIG. 1 . The method may include the steps of:

Step 501: The remote terminal broadcasts a relay discovery request message.

The Remote UE sends a U2N relay discovery Solicitation (relay discovery request) message; the U2N relay discovery Solicitation message includes Discoverer Info (used to indicate the information of the discoverer), and emergency service indication (used to indicate that the Remote UE needs to initiate an emergency service).

The Remote UE allocates a source Layer 2 ID and a destination Layer 2 ID for the U2N relay discovery Solicitation message, and the destination Layer 2 ID for sending the U2N relay discovery Solicitation message can be a Layer 2 ID of all 1s or another Layer 2 ID.

The remote terminal allocates a second source layer 2 address and/or a second destination layer 2 address for the relay discovery request message; wherein, the second destination layer 2 address is all 1s, or, the second destination layer 2 address is all 0s, or, the second destination layer 2 address is any layer 2 address.

The second source layer 2 address is the source address of the relay discovery request message. The second destination layer 2 address is the destination address of the relay discovery request message. Exemplarily, the remote terminal allocates a destination address of the relay discovery request message, and the relay terminal monitors the relay discovery request message on the destination address.

Step 502: the relay terminal sends a relay discovery response message to the remote terminal.

The Relay UE that supports emergency services returns a U2N relay Discovery Response (relay discovery response) message to the Remote UE. The U2N relay Discovery Response message includes Discoveree Info (used to indicate the information of the discovered person), RSC, and emergency service indication (used to indicate that the RSC in the message can provide emergency services).

The destination Layer 2 ID for sending the U2N relay Discovery Response message is the source Layer 2 ID of the U2N relay discovery Solicitation message in step 501, and the Relay UE allocates the source Layer 2 ID for sending the U2N relay Discovery Response message.

The relay terminal determines the second source Layer 2 address of the relay discovery request message as the third destination Layer 2 address of the relay discovery response message; and allocates the third source Layer 2 address for the relay discovery response message.

The third source layer 2 address is the source address of the relay discovery response message. The third destination layer 2 address is the destination address of the relay discovery response message. Exemplarily, the source address of the relay discovery request message is the destination address of the relay discovery response message.

To sum up, the technical solution provided by the embodiment of this application uses the remote terminal to broadcast the relay discovery request message, and carries the second emergency service indication in the relay discovery request message. The second emergency service indication is used to indicate that the remote terminal has an emergency service demand. The relay terminal supporting the emergency service replies with the relay discovery response message. The relay discovery response message carries the RSC provided by the relay terminal and the first emergency service indication. The first emergency service indication is used to instruct the RSC to support the emergency service, so that the remote terminal selects a relay terminal supporting the emergency service to establish a connection and execute the emergency service.

Exemplarily, when the registration procedure performed by the relay terminal is emergency registration, the relay terminal may also send an emergency registration indication to the remote terminal.

Please refer to FIG. 11 , which shows a flowchart of a method for providing emergency services provided by an embodiment of the present application. This method is applied to the communication system shown in FIG. 1 . The method may include the steps of:

Step 601: The relay terminal initiates a registration process and performs emergency registration.

Before the U2N relay discovery process, the Relay UE registers first. This registration process is an emergency registration. The emergency registration occurs when the authentication process fails, the Relay UE is in a forbidden area (restricted area), and the UE itself does not have a valid SIM card inserted.

If the authentication fails, the relay terminal performs emergency registration; or, when the relay terminal is in a restricted area, the relay terminal performs emergency registration; or, when the relay terminal is not inserted with a valid SIM card, the relay terminal performs emergency registration.

Exemplarily, the communication security of the emergency registered relay terminal is not guaranteed. Therefore, this embodiment provides a parameter: emergency registration indication, which is used to assist the remote terminal to select a relay terminal to establish a connection. The remote terminal can preferentially select a normally registered relay terminal to access to ensure communication security.

Step 602: the relay terminal broadcasts a relay discovery announcement message.

When the Relay UE uses Model A to perform the U2N relay discovery process, the Relay UE sends a U2N relay discovery Announcement message; the Relay UE allocates a source Layer 2 ID and a destination Layer 2 ID for the U2N relay discovery Announcement, and the destination Layer 2 ID for sending the U2N relay discovery Announcement message can be all 1 The Layer 2 ID or other Layer 2 ID; the U2N relay discovery Announcement message includes Announcer Info, RSC, emergency service indication and emergency registration indication. The emergency registration indication is used to indicate that the Relay UE is an unauthenticated UE or that the registration process initiated by the Relay UE is an emergency registration.

That is, the first message (relay discovery announcement message) also includes an emergency registration indication; the emergency registration indication is used to indicate that the relay terminal is an unauthenticated terminal, or is used to indicate that the registration process initiated by the relay terminal is an emergency registration.

Step 603: the remote terminal broadcasts a relay discovery request message.

When the Remote UE and the Relay UE use Model B to perform the U2N relay discovery process, the Remote UE sends a U2N relay discovery Solicitation message; the Remote UE allocates a source Layer 2 ID and a destination Layer 2 ID for the U2N relay discovery Solicitation message, and sends a U2N relay discovery Solicitation message to the destination Layer 2 The ID can be a Layer 2 ID of all 1s or other Layer 2 IDs; the U2N relay discovery Solicitation message includes Discoverer Info and emergency service instructions.

Step 604: the relay terminal sends a relay discovery response message to the remote terminal.

The Relay UE that supports emergency services returns a U2N relay Discovery Response message to the Remote UE, and the destination Layer 2 ID for sending the U2N relay Discovery Response message is the source Layer 2 ID in step 603, and the Relay UE assigns a source Layer 2 ID for sending the U2N relay Discovery Response message; U2N relay Discover y The Response message includes Discoveree Info, RSC, and emergency service instructions. The U2N relay Discovery Response message also includes an emergency registration indication, which is used to indicate that the Relay UE is an unauthenticated UE or that the registration process initiated by the Relay UE is an emergency registration.

That is, the first message (relay discovery response message) also includes an emergency registration indication; the emergency registration indication is used to indicate that the relay terminal is an unauthenticated terminal, or is used to indicate that the registration process initiated by the relay terminal is an emergency registration.

The emergency registration indication means that the signaling sent between the Remote UE and the Relay UE cannot be protected safely. In this way, the Remote UE can select the Relay UE according to the emergency registration indication. Since the emergency registration indication means that the security cannot be guaranteed, the Remote UE can preferentially select other Relay UEs to serve it when there are other Relay UEs providing emergency services.

Exemplarily, when the relay discovery process is mode A, step 601 and step 602 are performed; when the relay discovery process is mode B, step 601, step 603 and step 604 are performed.

To sum up, in the technical solution provided by the embodiment of this application, when the relay terminal is an emergency registered terminal, the emergency registration indication is carried in the first message sent by the relay terminal to inform the remote terminal that the relay terminal is an emergency registered terminal, and communication security cannot be guaranteed, so that the remote terminal preferentially selects a normally registered relay terminal to perform emergency services.

Exemplarily, when the relay terminal becomes in an emergency registration state, the relay terminal may also send a state change indication to the remote terminal.

Please refer to FIG. 12 , which shows a flowchart of a method for providing emergency services provided by an embodiment of the present application. This method is applied to the communication system shown in FIG. 1 . The method may include the steps of:

Step 701: the relay terminal initiates a registration process.

Before the Relay UE performs the U2N relay discovery process, it first registers, and this registration process is a normal registration.

Step 702: the relay terminal broadcasts a relay discovery announcement message.

When the Relay UE uses Model A to perform the U2N relay discovery process, the Relay UE sends a U2N relay discovery Announcement message; the Relay UE allocates a source Layer 2 ID and a destination Layer 2 ID for the U2N relay discovery Announcement message, and the destination Layer 2 ID for sending the U2N relay discovery Announcement message can be All 1 Layer 2 ID or other Layer 2 ID; U2N relay discovery Announcement message includes Announcer Info, RSC, and emergency service indication.

Step 703: The remote terminal broadcasts a relay discovery request message.

Step 704: the relay terminal sends a relay discovery response message to the remote terminal.

The Relay UE that supports emergency services returns a U2N relay Discovery Response message to the Remote UE, and the destination Layer 2 ID for sending the U2N relay Discovery Response message is the source Layer 2 ID in step 703, and the Relay UE allocates a source Layer 2 ID for sending the U2N relay Discovery Response message; U2N relay Discover y The Response message includes Discoveree Info, RSC, and emergency service instructions.

The Remote UE selects the Relay UE to access and establish a PC5 connection. That is, the remote terminal establishes a connection with the relay terminal.

Step 705: The relay terminal receives the terminal configuration instruction sent by the AMF.

When the Relay UE moves and the Relay UE moves to the forbidden area, or the network side re-authenticates and the authentication fails, the state of the Relay UE changes to the emergency registration state. Exemplarily, if the AMF finds that the Relay UE moves to the forbidden area, the AMF notifies the Relay UE to enter the emergency registration state through a UE configuration command (configuration command) message.

When the relay terminal moves to the restricted area, the relay terminal determines that the state of the relay terminal has changed to an emergency registration state;

That is, the relay terminal receives the terminal configuration instruction sent by the core network element (AMF network element), the terminal configuration instruction is used to instruct the relay terminal to enter the emergency registration state, and the terminal configuration instruction is sent by the core network element when it is determined that the relay terminal moves to a restricted area.

In the case that the authentication fails due to re-authentication on the network side, the relay terminal determines that the state of the relay terminal has changed to an emergency registration state;

That is, the relay terminal receives the authentication rejection instruction sent by the core network element (AMF network element), the authentication rejection instruction is used to instruct the relay terminal to enter the emergency registration state, and the authentication rejection instruction is sent by the core network element when the authentication fails due to re-authentication.

Step 706: the relay terminal sends a state change indication to the remote terminal.

When the relay terminal enters the emergency registration state, the relay terminal sends a state change indication to the remote terminal, where the state change indication is used to instruct the relay terminal to enter the emergency registration state.

The Relay UE informs the Remote UE that it has entered the emergency registration state through PC5 signaling. Since the emergency registration indication means that the security cannot be guaranteed, the Remote UE can decide whether to maintain the connection with the Relay UE according to the status change indication. If the Remote UE chooses to release the PC5 connection, the Remote UE can preferentially reselect other Relay UEs to serve it when there are other Relay UEs providing emergency services.

Exemplarily, the remote terminal sends a connection release instruction to the relay terminal based on the state change indication, and the relay terminal receives the connection release instruction sent by the remote terminal; the relay terminal releases the connection with the remote terminal.

Exemplarily, when the relay discovery process is mode A, step 701, step 702, step 705 and step 706 are performed; when the relay discovery process is mode B, step 701, step 703, step 704, step 705 and step 706 are performed.

In summary, in the technical solution provided by the embodiment of the present application, after the remote terminal establishes a connection with the relay terminal, if the registration status of the relay terminal changes to the emergency registration status, the relay terminal sends a status change indication to the remote terminal to inform the remote terminal that the relay terminal is currently in the emergency registration status. If there are other relay terminals that can provide emergency services, the remote terminal can disconnect from the current relay terminal and establish connections with other relay terminals to perform emergency services to ensure communication security.

It should be noted that, in the foregoing method embodiments, the technical solutions of the present application are introduced and described mainly from the perspective of interaction between the relay terminal and the remote terminal. The above-mentioned steps performed by the relay terminal can be independently implemented as a method for providing emergency services on the relay terminal side; the above-mentioned steps performed by the remote terminal can be independently implemented as a method for providing emergency services on the remote terminal side.

The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Please refer to FIG. 13 , which shows a block diagram of an emergency service providing apparatus provided by an embodiment of the present application. The device has the function of implementing the above example method on the relay terminal side, and the function may be implemented by hardware, or by executing corresponding software on the hardware. The device may be the relay terminal described above, or may be set in the relay terminal. As shown in Figure 13, the device may include:

The first sending module 801 is configured to send a first message, where the first message includes a relay service code RSC and a first emergency service indication;

In an optional embodiment, the first message includes a relay discovery announcement message; the first sending module 801 is configured to broadcast the relay discovery announcement message.

In an optional embodiment, the first message includes a relay discovery response message; the first sending module 801 is configured to send the relay discovery response message to a remote terminal.

In an optional embodiment, the apparatus further includes: a first receiving module 802, configured to receive a relay discovery request message sent by the remote terminal, where the relay discovery request message includes a second emergency service indication, and the second emergency service indication is used to indicate that the remote terminal has an emergency service requirement; the first sending module 801 is configured to send the relay discovery response message to the remote terminal when the relay terminal supports the emergency service.

In an optional embodiment, the relay terminal is an announcer; the relay discovery announcement message further includes announcer information, and the announcer information includes information about the relay terminal.

In an optional embodiment, the relay terminal is a discovered person; the relay discovery response message further includes information about the discovered person, and the information about the discovered person includes information about the relay terminal.

In an optional embodiment, the remote terminal is a discoverer; the relay discovery request message further includes discoverer information, and the discoverer information includes information about the remote terminal.

In an optional embodiment, the device further includes: a first allocation module 804, configured to allocate a first source layer 2 address and/or a first destination layer 2 address for the relay discovery announcement message; wherein, the first destination layer 2 address is all 1s, or the first destination layer 2 address is all 0s, or the first destination layer 2 address is any layer 2 address.

In an optional embodiment, the apparatus further includes: a first assignment module 804, configured to determine the second source Layer 2 address of the relay discovery request message as the third destination Layer 2 address of the relay discovery response message; and allocate a third source Layer 2 address for the relay discovery response message.

In an optional embodiment, the first message further includes an emergency registration indication; the emergency registration indication is used to indicate that the relay terminal is an unauthenticated terminal, or is used to indicate that the registration process initiated by the relay terminal is an emergency registration.

In an optional embodiment, the device further includes: a registration module 805, configured to perform emergency registration when the authentication fails; or, the registration module 805, configured to perform the emergency registration when the relay terminal is in a restricted area; or, the registration module 805, configured to perform the emergency registration when the relay terminal is not inserted into a valid user identification SIM card.

In an optional embodiment, the first sending module 801 is configured to send a state change indication to a remote terminal when the relay terminal enters an emergency registration state, and the state change indication is used to instruct the relay terminal to enter an emergency registration state.

In an optional embodiment, the apparatus further includes: a state module 806, configured to determine that the state of the relay terminal has changed to the emergency registration state when the relay terminal moves to a restricted area; or, a state module 806, configured to determine that the state of the relay terminal has changed to the emergency registration state when re-authentication on the network side results in an authentication failure.

In an optional embodiment, the device further includes: a first receiving module 802, configured to receive a terminal configuration instruction sent by a core network element, where the terminal configuration instruction is used to instruct the relay terminal to enter the emergency registration state, and the terminal configuration instruction is sent by the core network element when it is determined that the relay terminal moves to a restricted area.

In an optional embodiment, the apparatus further includes: a first receiving module 802, configured to receive an authentication rejection instruction sent by a core network element, the authentication rejection instruction being used to instruct the relay terminal to enter the emergency registration state, and the authentication rejection instruction is sent by the core network element when authentication fails due to re-authentication.

In an optional embodiment, the apparatus further includes: a first connection module 803, configured to establish a connection with the remote terminal.

In an optional embodiment, the apparatus further includes: a first receiving module 802, configured to receive a connection release instruction sent by the remote terminal; a first connection module 803, configured to release the connection with the remote terminal.

Please refer to FIG. 14 , which shows a block diagram of an emergency service providing apparatus provided by an embodiment of the present application. The device has the function of realizing the above-mentioned method example on the remote terminal side, and the function may be realized by hardware, or may be realized by executing corresponding software by hardware. The device may be the remote terminal described above, or may be set in the remote terminal. As shown in Figure 14, the device may include:

The second receiving module 902 is configured to receive a first message sent by a relay terminal, where the first message includes a relay service code RSC and a first emergency service indication, where the first emergency service indication is used to indicate that the RSC supports the emergency service;

The second connection module 904 is configured to establish a connection with the relay terminal when there is an emergency service demand, and the relay terminal is determined according to the first emergency service indication.

In an optional embodiment, the first message includes a relay discovery announcement message; the second receiving module 902 is configured to receive the relay discovery announcement message broadcast by the relay terminal.

In an optional embodiment, the first message includes a relay discovery response message.

In an optional embodiment, the relay discovery response message is sent when the relay terminal supports the emergency service, and the apparatus further includes: a second sending module 901, configured to send a relay discovery request message to the relay terminal, where the relay discovery request message includes a second emergency service indication, and the second emergency service indication is used to indicate that the remote terminal has an emergency service demand.

In an optional embodiment, the device further includes: a second allocation module 903, configured to allocate a second source layer 2 address and/or a second destination layer 2 address for the relay discovery request message; wherein, the second destination layer 2 address is all 1s, or the second destination layer 2 address is all 0s, or the second destination layer 2 address is any layer 2 address.

In an optional embodiment, the apparatus further includes: a selection module 905, configured to select the relay terminal supporting the emergency service according to the first emergency service indication when there is an emergency service demand; and the second connection module 904, configured to establish a connection with the relay terminal.

In an optional embodiment, the selection module 905 is configured to select the relay terminal supporting the emergency service according to the first emergency service indication and the emergency registration indication when there is an emergency service demand; the second connection module 904 is configured to establish a connection with the relay terminal.

In an optional embodiment, the second receiving module 902 is configured to receive a state change indication sent by the relay terminal, where the state change indication is used to instruct the relay terminal to enter an emergency registration state.

In an optional embodiment, the state change indication is sent by the relay terminal when the relay terminal moves to a restricted area; or, the state change indication is sent by the relay terminal when the network side re-authentication results in authentication failure.

In an optional embodiment, the second connection module 904 is configured to determine whether to maintain the connection with the relay terminal according to the state change indication.

In an optional embodiment, the apparatus further includes: a second sending module 901, configured to send a connection release instruction to the relay terminal according to the state change indication; and the second connection module 904, configured to release the connection with the relay terminal.

It should be noted that when the device provided in the above embodiment implements its functions, it only uses the division of the above-mentioned functional modules as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to complete all or part of the functions described above.

Regarding the apparatus in the foregoing embodiments, the specific manner in which each module executes operations has been described in detail in the embodiments related to the method, and will not be described in detail here.

Please refer to FIG. 15 , which shows a schematic structural diagram of a terminal device provided by an embodiment of the present application. The terminal device may include: a processor 1001 , a receiver 1002 , a transmitter 1003 , a memory 1004 and a bus 1005 .

The processor 1001 includes one or more processing cores, and the processor 1001 executes various functional applications and information processing by running software programs and modules.

The receiver 1002 and the transmitter 1003 can be realized as a transceiver 1006, and the transceiver 1006 can be a communication chip.

The memory 1004 is connected to the processor 1001 through a bus 1005 .

The memory 1004 may be used to store a computer program, and the processor 1001 is used to execute the computer program, so as to implement various steps performed by the terminal device in the foregoing method embodiments.

In addition, the memory 1004 can be realized by any type of volatile or nonvolatile storage device or their combination. The volatile or nonvolatile storage device includes but is not limited to: RAM (Random-Access Memory, random access memory) and ROM (Read-Only Memory, read-only memory), EPROM (Erasable Programmable Read-Only Memory, erasable programmable read-only memory), EEPROM (Electrically Erasable Prog rammable Read-Only Memory, electrically erasable programmable read-only memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory, CD-ROM), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cartridges, tapes, disk storage or other magnetic storage devices.

Wherein, when the terminal device is implemented as a relay terminal, the processor and the transceiver involved in the embodiment of the present application may execute the steps performed by the relay terminal in any of the methods shown in FIG. 7 to FIG. 12 above, which will not be repeated here.

In a possible implementation manner, when the terminal device is implemented as a relay terminal,

Wherein, when the terminal device is implemented as a remote terminal, the processor and the transceiver involved in the embodiment of the present application may execute the steps performed by the remote terminal in any of the methods shown in FIG. 7 to FIG. 12 above, which will not be repeated here.

The embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a relay terminal, so as to implement the above method for providing emergency services on the relay terminal side.

The embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a remote terminal, so as to implement the above method for providing emergency services on the remote terminal side.

Optionally, the computer-readable storage medium may include: ROM (Read-Only Memory, read-only memory), RAM (Random-Access Memory, random access memory), SSD (Solid State Drives, solid state drive) or an optical disc, etc. Wherein, the random access memory may include ReRAM (Resistance Random Access Memory, resistive random access memory) and DRAM (Dynamic Random Access Memory, dynamic random access memory).

The embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on the relay terminal, it is used to implement the above method for providing emergency services on the relay terminal side.

The embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on the remote terminal, it is used to implement the above method for providing emergency services on the remote terminal side.

An embodiment of the present application also provides a computer program product or computer program, the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor of the relay terminal reads and executes the computer instructions from the computer-readable storage medium, so as to implement the above-mentioned method for providing emergency services on the relay terminal side.

The embodiment of the present application also provides a computer program product or computer program, where the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor of the remote terminal reads and executes the computer instructions from the computer-readable storage medium, so as to implement the above method for providing emergency services on the remote terminal side.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which may mean that A directly indicates B, for example, B can be obtained through A; it may also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it may also indicate that there is an association relationship between A and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, or configures and is configured.

The "plurality" mentioned herein means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character "/" generally indicates that the contextual objects are an "or" relationship.

In addition, the numbering of the steps described in this document only exemplifies a possible sequence of execution among the steps. In some other embodiments, the above-mentioned steps may not be performed in accordance with the sequence of numbers, for example, two steps with different numbers are performed at the same time, or steps with two different numbers are performed in the reverse order as shown in the illustration, which is not limited in this embodiment of the present application.

Those skilled in the art should be aware that, in the foregoing one or more examples, the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above descriptions are only exemplary embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

A method for providing emergency services, characterized in that the method is executed by a relay terminal, and the method includes:

sending a first message, where the first message includes a relay service code RSC and a first emergency service indication;

Wherein, the first emergency service indication is used to instruct the RSC to support the emergency service.
The method according to claim 1, wherein the first message comprises a relay discovery announcement message;

The sending the first message includes:

broadcasting the relay discovery announcement message.
The method according to claim 1, wherein the first message comprises a relay discovery response message;

The sending the first message includes:

Send the relay discovery response message to the remote terminal.
The method according to claim 3, characterized in that the method further comprises:

receiving a relay discovery request message sent by the remote terminal, where the relay discovery request message includes a second emergency service indication, where the second emergency service indication is used to indicate that the remote terminal has an emergency service demand;

The sending the relay discovery response message to the remote terminal includes:

If the relay terminal supports the emergency service, send the relay discovery response message to the remote terminal.
The method according to claim 2, wherein the relay terminal is an announcer;

The relay discovery announcement message further includes announcer information, and the announcer information includes information about the relay terminal.
The method according to claim 3 or 4, wherein the relay terminal is the discovered person;

The relay discovery response message further includes the information of the discovered person, and the information of the discovered person includes the information of the relay terminal.
The method according to claim 4, wherein the remote terminal is a discoverer;

The relay discovery request message further includes discoverer information, and the discoverer information includes the information of the remote terminal.
The method according to claim 2, further comprising:

allocating a first source layer 2 address and/or a first destination layer 2 address for the relay discovery announcement message;

Wherein, the first destination layer 2 address is all 1s, or, the first destination layer 2 address is all 0s, or, the first destination layer 2 address is any layer 2 address.
The method according to claim 4, characterized in that the method further comprises:

determining the second source layer 2 address of the relay discovery request message as the third destination layer 2 address of the relay discovery response message;

Allocating a third source layer 2 address for the relay discovery response message.
The method according to any one of claims 1 to 9, wherein the first message further includes an emergency registration indication;

The emergency registration indication is used to indicate that the relay terminal is an unauthenticated terminal, or is used to indicate that the registration process initiated by the relay terminal is an emergency registration.
The method according to claim 10, characterized in that the method further comprises:

In case of authentication failure, perform emergency registration;

Or, when the relay terminal is in a restricted area, perform the emergency registration;

Or, when the relay terminal is not inserted with a valid subscriber identification SIM card, perform the emergency registration.
The method according to any one of claims 1 to 9, wherein the method further comprises:

When the relay terminal enters the emergency registration state, sending a state change indication to the remote terminal, where the state change indication is used to instruct the relay terminal to enter the emergency registration state.
The method according to claim 12, characterized in that the method further comprises:

When the relay terminal moves to a restricted area, determine that the state of the relay terminal has changed to the emergency registration state;

Or, in the case that the re-authentication on the network side results in an authentication failure, it is determined that the state of the relay terminal has changed to the emergency registration state.
The method according to claim 12, wherein the determining that the state of the relay terminal has changed to the emergency registration state when the relay terminal moves in includes:

receiving a terminal configuration instruction sent by a core network element, the terminal configuration instruction is used to instruct the relay terminal to enter the emergency registration state, and the terminal configuration instruction is sent by the core network element when it is determined that the relay terminal moves to a restricted area.
The method according to claim 12, wherein the determining that the state of the relay terminal has changed to the emergency registration state in the case that re-authentication on the network side results in an authentication failure comprises:

receiving an authentication rejection instruction sent by a core network element, where the authentication rejection instruction is used to instruct the relay terminal to enter the emergency registration state, and the authentication rejection instruction is sent by the core network element when authentication fails due to re-authentication.
The method according to claim 12, wherein when the relay terminal enters the emergency registration state, before sending the status change indication to the remote terminal, further comprising:

Establish a connection with the remote terminal.
The method according to claim 12, characterized in that the method further comprises:

receiving a connection release indication sent by the remote terminal;

Release the connection with the remote terminal.
A method for providing emergency services, characterized in that the method is executed by a remote terminal, and the method includes:

receiving a first message sent by a relay terminal, where the first message includes a relay service code RSC and a first emergency service indication, where the first emergency service indication is used to indicate that the RSC supports the emergency service;

If there is an emergency service requirement, establish a connection with the relay terminal, where the relay terminal is determined according to the first emergency service indication.
The method according to claim 18, wherein the first message comprises a relay discovery announcement message;

The receiving the first message sent by the relay terminal includes:

receiving the relay discovery announcement message broadcast by the relay terminal.
The method according to claim 18, wherein the first message comprises a relay discovery response message.
The method according to claim 20, wherein the relay discovery response message is sent when the relay terminal supports the emergency service, and the method further comprises:

Sending a relay discovery request message to the relay terminal, where the relay discovery request message includes a second emergency service indication, where the second emergency service indication is used to indicate that the remote terminal has an emergency service demand.
The method according to claim 19, wherein the relay terminal is an announcer;

The relay discovery announcement message further includes announcer information, and the announcer information includes information about the relay terminal.
The method according to claim 20 or 21, wherein the relay terminal is the discovered person;

The relay discovery response message further includes the information of the discovered person, and the information of the discovered person includes the information of the relay terminal.
The method according to claim 21, wherein the remote terminal is a discoverer;

The relay discovery request message further includes discoverer information, and the discoverer information includes the information of the remote terminal.
The method according to claim 21, further comprising:

assigning a second source layer 2 address and/or a second destination layer 2 address for the relay discovery request message;

Wherein, the second destination layer 2 address is all 1s, or, the second destination layer 2 address is all 0s, or, the second destination layer 2 address is any layer 2 address.
The method according to any one of claims 18 to 25, wherein the establishing a connection with the relay terminal when there is an emergency service demand includes:

Selecting the relay terminal that supports the emergency service according to the first emergency service indication when there is an emergency service demand;

Establish a connection with the relay terminal.
The method according to any one of claims 18 to 26, wherein the first message further includes an emergency registration indication;

The emergency registration indication is used to indicate that the relay terminal is an unauthenticated terminal, or is used to indicate that the registration process initiated by the relay terminal is an emergency registration.
The method according to claim 27, wherein the establishing a connection with the relay terminal when there is an emergency service demand comprises:

When there is an emergency service demand, select the relay terminal that supports the emergency service according to the first emergency service indication and the emergency registration indication;

Establish a connection with the relay terminal.
The method according to any one of claims 18 to 26, further comprising:

receiving a state change indication sent by the relay terminal, where the state change indication is used to instruct the relay terminal to enter an emergency registration state.
The method according to claim 29, wherein the state change indication is sent by the relay terminal when the relay terminal moves to a restricted area;

Or, the state change indication is sent by the relay terminal when the network side re-authentication results in authentication failure.
The method according to claim 29, further comprising:

Determine whether to maintain the connection with the relay terminal according to the state change indication.
The method according to claim 29, further comprising:

sending a connection release instruction to the relay terminal according to the state change indication;

Release the connection with the relay terminal.
An emergency service providing device, characterized in that the device is used to implement a relay terminal, and the device includes:

A first sending module, configured to send a first message, where the first message includes a relay service code RSC and a first emergency service indication;

Wherein, the first emergency service indication is used to instruct the RSC to support the emergency service.
The device according to claim 33, wherein the first message includes a relay discovery announcement message;

The first sending module is configured to broadcast the relay discovery announcement message.
The apparatus according to claim 33, wherein the first message comprises a relay discovery response message;

The first sending module is configured to send the relay discovery response message to the remote terminal.
The device according to claim 35, further comprising:

A first receiving module, configured to receive a relay discovery request message sent by the remote terminal, where the relay discovery request message includes a second emergency service indication, and the second emergency service indication is used to indicate that the remote terminal has an emergency service demand;

The first sending module is configured to send the relay discovery response message to the remote terminal when the relay terminal supports the emergency service.
The device according to claim 34, wherein the relay terminal is an announcer;

The relay discovery announcement message further includes announcer information, and the announcer information includes information about the relay terminal.
The device according to claim 35 or 36, wherein the relay terminal is the discovered person;

The relay discovery response message further includes the information of the discovered person, and the information of the discovered person includes the information of the relay terminal.
The device according to claim 36, wherein the remote terminal is a discoverer;

The relay discovery request message further includes discoverer information, and the discoverer information includes the information of the remote terminal.
The device according to claim 34, further comprising:

A first allocation module, configured to allocate a first source layer 2 address and/or a first destination layer 2 address for the relay discovery announcement message;

Wherein, the first destination layer 2 address is all 1s, or, the first destination layer 2 address is all 0s, or, the first destination layer 2 address is any layer 2 address.
The device according to claim 36, further comprising:

A first allocation module, configured to determine the second source layer 2 address of the relay discovery request message as the third destination layer 2 address of the relay discovery response message;

Allocating a third source layer 2 address for the relay discovery response message.
The device according to any one of claims 33 to 41, wherein the first message further includes an emergency registration indication;

The emergency registration indication is used to indicate that the relay terminal is an unauthenticated terminal, or is used to indicate that the registration process initiated by the relay terminal is an emergency registration.
The device according to claim 42, further comprising:

A registration module, configured to perform emergency registration in case of authentication failure;

Or, the registration module is configured to perform the emergency registration when the relay terminal is in a restricted area;

Or, the registration module is configured to perform the emergency registration when the relay terminal is not inserted with a valid subscriber identification SIM card.
Apparatus according to any one of claims 33 to 41 wherein,

The first sending module is configured to send a state change indication to a remote terminal when the relay terminal enters an emergency registration state, where the state change indication is used to instruct the relay terminal to enter an emergency registration state.
The device according to claim 44, further comprising:

A state module, configured to determine that the state of the relay terminal has changed to the emergency registration state when the relay terminal moves to a restricted area;

Or, a state module, configured to determine that the state of the relay terminal has changed to the emergency registration state when the re-authentication on the network side results in an authentication failure.
The device according to claim 44, further comprising:

The first receiving module is configured to receive a terminal configuration instruction sent by a core network element, the terminal configuration instruction is used to instruct the relay terminal to enter the emergency registration state, and the terminal configuration instruction is sent by the core network element when it is determined that the relay terminal moves to a restricted area.
The device according to claim 44, further comprising:

The first receiving module is configured to receive an authentication rejection instruction sent by a network element of the core network, where the authentication rejection instruction is used to instruct the relay terminal to enter the emergency registration state, and the authentication rejection instruction is sent by the core network element when authentication fails due to re-authentication.
The device according to claim 44, further comprising:

A first connection module, configured to establish a connection with the remote terminal.
The device according to claim 44, further comprising:

A first receiving module, configured to receive a connection release indication sent by the remote terminal;

The first connection module is configured to release the connection with the remote terminal.
A device for providing emergency services, characterized in that the device is used to implement a remote terminal, and the device includes:

The second receiving module is configured to receive a first message sent by a relay terminal, where the first message includes a relay service code RSC and a first emergency service indication, where the first emergency service indication is used to indicate that the RSC supports the emergency service;

The second connection module is configured to establish a connection with the relay terminal when there is an emergency service demand, and the relay terminal is determined according to the first emergency service indication.
The device according to claim 50, wherein the first message includes a relay discovery announcement message;

The second receiving module is configured to receive the relay discovery announcement message broadcast by the relay terminal.
The apparatus according to claim 50, wherein the first message comprises a relay discovery response message.
The device according to claim 52, wherein the relay discovery response message is sent when the relay terminal supports the emergency service, and the device further comprises:

The second sending module is configured to send a relay discovery request message to the relay terminal, where the relay discovery request message includes a second emergency service indication, and the second emergency service indication is used to indicate that the remote terminal has an emergency service demand.
The device according to claim 51, wherein the relay terminal is an announcer;

The relay discovery announcement message further includes announcer information, and the announcer information includes information about the relay terminal.
The device according to claim 52 or 53, wherein the relay terminal is the discovered person;

The relay discovery response message further includes the information of the discovered person, and the information of the discovered person includes the information of the relay terminal.
The device according to claim 53, wherein the remote terminal is a discoverer;

The relay discovery request message further includes discoverer information, and the discoverer information includes the information of the remote terminal.
The device according to claim 53, further comprising:

A second allocation module, configured to allocate a second source layer 2 address and/or a second destination layer 2 address for the relay discovery request message;

Wherein, the second destination layer 2 address is all 1s, or, the second destination layer 2 address is all 0s, or, the second destination layer 2 address is any layer 2 address.
The device according to any one of claims 50 to 57, wherein the device further comprises:

A selection module, configured to select the relay terminal supporting the emergency service according to the first emergency service indication when there is an emergency service demand;

The second connection module is configured to establish a connection with the relay terminal.
The device according to any one of claims 50 to 58, wherein the first message further includes an emergency registration indication;

The emergency registration indication is used to indicate that the relay terminal is an unauthenticated terminal, or is used to indicate that the registration process initiated by the relay terminal is an emergency registration.
The device according to claim 59, wherein the selection module is configured to select the relay terminal supporting the emergency service according to the first emergency service indication and the emergency registration indication when there is an emergency service demand;

The second connection module is configured to establish a connection with the relay terminal.
Apparatus according to any one of claims 50 to 58 wherein,

The second receiving module is configured to receive a state change indication sent by the relay terminal, where the state change indication is used to instruct the relay terminal to enter an emergency registration state.
The device according to claim 61, wherein the state change indication is sent by the relay terminal when the relay terminal moves to a restricted area;

Or, the state change indication is sent by the relay terminal when the network side re-authentication results in authentication failure.
The apparatus of claim 61 wherein,

The second connection module is configured to determine whether to maintain the connection with the relay terminal according to the state change indication.
The device according to claim 61, further comprising:

A second sending module, configured to send a connection release instruction to the relay terminal according to the state change indication;

The second connection module is configured to release the connection with the relay terminal.
A terminal device, characterized in that the terminal device includes a transceiver;

The transceiver is configured to send a first message, where the first message includes a relay service code RSC and a first emergency service indication;

Wherein, the first emergency service indication is used to instruct the RSC to support the emergency service.
A terminal device, characterized in that the terminal device includes a transceiver and a processor connected to the transceiver;

The transceiver is configured to receive a first message sent by a relay terminal, where the first message includes a relay service code RSC and a first emergency service indication, where the first emergency service indication is used to indicate that the RSC supports the emergency service;

The processor is configured to establish a connection with the relay terminal when there is an emergency service demand, and the relay terminal is determined according to the first emergency service indication.
A computer-readable storage medium, wherein a computer program is stored in the storage medium, and the computer program is used to be executed by a processor to implement the method for providing emergency services according to any one of claims 1 to 17, or the method for providing emergency services according to any one of claims 18 to 32.
A chip, characterized in that the chip includes a programmable logic circuit and/or program instructions, and when the chip is running, it is used to implement the method for providing emergency services according to any one of claims 1 to 17, or the method for providing emergency services according to any one of claims 18 to 32.
A computer program product or computer program, characterized in that the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor reads and executes the computer instructions from the computer-readable storage medium, so as to realize the method for providing emergency services according to any one of claims 1 to 17, or the method for providing emergency services according to any one of claims 18 to 32.