WO2024067398A1 - 紧急业务的处理方法及装置 - Google Patents

紧急业务的处理方法及装置 Download PDF

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Publication number
WO2024067398A1
WO2024067398A1 PCT/CN2023/120716 CN2023120716W WO2024067398A1 WO 2024067398 A1 WO2024067398 A1 WO 2024067398A1 CN 2023120716 W CN2023120716 W CN 2023120716W WO 2024067398 A1 WO2024067398 A1 WO 2024067398A1
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WO
WIPO (PCT)
Prior art keywords
emergency
emergency service
relay terminal
terminal
remote terminal
Prior art date
Application number
PCT/CN2023/120716
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English (en)
French (fr)
Inventor
邓强
Original Assignee
大唐移动通信设备有限公司
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Application filed by 大唐移动通信设备有限公司 filed Critical 大唐移动通信设备有限公司
Publication of WO2024067398A1 publication Critical patent/WO2024067398A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a method and device for processing emergency services.
  • relevant technologies define that when a terminal device directly accesses a network, the terminal device can learn from the network whether the current access network supports emergency services (Emergency Service), and under what circumstances the network supports terminal devices to request emergency services, thereby executing the emergency services required by the terminal device.
  • Emergency Service Emergency Services
  • the remote terminal cannot register with the network and cannot obtain information related to the emergency service, the remote terminal cannot obtain the emergency service from the network.
  • the embodiments of the present disclosure provide a method and device for processing emergency services, so as to solve the problem in the related art that a remote terminal cannot obtain emergency services.
  • an embodiment of the present disclosure provides a method for processing an emergency service, which is applied to a remote terminal, including:
  • a first message for establishing the emergency service is sent to the target relay terminal.
  • the second emergency service information includes any one of the following or a combination thereof:
  • the second emergency service support identifier includes: a second emergency relay service code.
  • the second PDU session parameters include a second emergency service data network name DNN and/or second emergency service single network slice selection auxiliary information S-NSSAI.
  • the scenarios supported by the candidate relay terminal for providing emergency services to the remote terminal include any one of the following or a combination thereof:
  • IMSI International Mobile Subscriber Identity
  • the acquiring the second emergency service information corresponding to the candidate relay terminal includes:
  • the second emergency service information sent by the candidate relay terminal is received.
  • the determining the target relay terminal based on the first emergency service information and the second emergency service information includes:
  • the candidate relay terminal corresponding to the matched second emergency service information is determined as the target relay terminal.
  • an embodiment of the present disclosure provides a method for processing an emergency service, which is applied to a relay terminal, including:
  • Second emergency service information corresponding to the relay terminal is sent to the remote terminal, where the second emergency service information is used to determine a target relay terminal, and the target relay terminal supports providing the remote terminal with the emergency service that the remote terminal needs to execute.
  • the second emergency service information includes any one of the following or a combination thereof:
  • the second emergency service support identifier includes: a second emergency relay service code.
  • the second PDU session parameters include a second emergency service data network name DNN and/or second emergency service single network slice selection auxiliary information S-NSSAI.
  • the situations in which the relay terminal supports providing emergency services to the remote terminal include any one of the following or a combination thereof:
  • IMSI International Mobile Subscriber Identity
  • the method before the sending the second emergency service information corresponding to the relay terminal to the remote terminal, the method further includes:
  • the method further includes:
  • a first message sent by the remote terminal and used for establishing an emergency service that the remote terminal needs to execute is received.
  • an embodiment of the present disclosure further provides an emergency service processing device, which is applied to a remote terminal, including:
  • a first acquiring unit configured to acquire second emergency service information corresponding to a candidate relay terminal
  • a first determining unit configured to determine a target relay terminal based on first emergency service information and the second emergency service information, wherein the first emergency service information corresponds to an emergency service that the remote terminal needs to perform;
  • the first sending unit is configured to send a first message for establishing the emergency service to the target relay terminal.
  • the second emergency service information includes any one of the following or a combination thereof:
  • the second emergency service support identifier includes: a second emergency relay service code.
  • the second PDU session parameters include a second emergency service data network name DNN and/or second emergency service single network slice selection auxiliary information S-NSSAI.
  • the scenarios supported by the candidate relay terminal for providing emergency services to the remote terminal include any one of the following or a combination thereof:
  • IMSI International Mobile Subscriber Identity
  • the first acquiring unit includes:
  • the first receiving subunit is configured to receive second emergency service information sent by a candidate relay terminal.
  • the first determining unit includes:
  • a first determining subunit configured to determine second emergency service information matching the first emergency service information
  • the second determining subunit is configured to determine the candidate relay terminal corresponding to the matched second emergency service information as the target relay terminal.
  • an embodiment of the present disclosure further provides an emergency service processing device, which is applied to a relay terminal, including:
  • the second sending unit is used to send second emergency service information corresponding to the relay terminal to the remote terminal, where the second emergency service information is used to determine a target relay terminal, and the target relay terminal supports providing the remote terminal with the emergency service that the remote terminal needs to execute.
  • the device further comprises:
  • a first receiving unit is configured to receive a second emergency service support identifier sent by a policy control function PCF entity;
  • the second receiving unit is used to send the relay terminal to the access and mobility management AMF entity.
  • the relay capability information of the second PDU session parameters sent by the AMF entity and the situation of providing emergency services to the remote terminal is used to send the relay terminal to the access and mobility management AMF entity.
  • the device further comprises:
  • the third receiving unit is used to receive a first message sent by the remote terminal for establishing an emergency service that the remote terminal needs to execute.
  • an embodiment of the present disclosure further provides a remote terminal, including a memory, a transceiver, and a processor, wherein:
  • a memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:
  • a first message for establishing the emergency service is sent to the target relay terminal.
  • the second emergency service information includes any one of the following or a combination thereof:
  • the second emergency service support identifier includes: a second emergency relay service code.
  • the second PDU session parameters include a second emergency service DNN and/or a second emergency service S-NSSAI.
  • the scenarios supported by the candidate relay terminal for providing emergency services to the remote terminal include any one of the following or a combination thereof:
  • IMSI International Mobile Subscriber Identity
  • the acquiring the second emergency service information corresponding to the candidate relay terminal includes:
  • the second emergency service information sent by the candidate relay terminal is received.
  • the determining the target relay terminal based on the first emergency service information and the second emergency service information includes:
  • the candidate relay terminal corresponding to the matched second emergency service information is determined as the target relay terminal.
  • the embodiment of the present disclosure further provides a relay terminal, including a memory, a transceiver and a processor, wherein:
  • a memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:
  • Second emergency service information corresponding to the relay terminal is sent to the remote terminal, where the second emergency service information is used to determine a target relay terminal, and the target relay terminal supports providing the remote terminal with the emergency service that the remote terminal needs to execute.
  • the method before the sending the second emergency service information corresponding to the relay terminal to the remote terminal, the method further includes:
  • the method further includes:
  • a first message sent by the remote terminal and used for establishing an emergency service that the remote terminal needs to execute is received.
  • an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the emergency service processing method described in the first aspect or the emergency service processing method described in the second aspect.
  • the emergency service processing method and device provided in the embodiment of the present disclosure can be applied to relay scenarios, such as Layer-3 UE-to-Network Relay, where the remote terminal obtains the first emergency service information and the second emergency service information, and transmits the first emergency service information and the second emergency service information to the remote terminal.
  • the target relay terminal is determined and a request is made to the target relay terminal to establish an emergency service, so that the remote terminal can communicate with the network with the help of the PDU session of the target relay terminal.
  • the target relay terminal provides data transmission for the remote terminal, so that the remote terminal can obtain emergency service support, solving the problem of the remote terminal being unable to perform emergency services due to the inability to directly access the network.
  • FIG1 is a schematic diagram of a network architecture provided by the present disclosure.
  • FIG2 is a schematic diagram of a process of a remote terminal communicating with a network via a relay terminal provided by the present disclosure
  • FIG3 is a flow chart of a method for processing emergency services provided in an embodiment of the present disclosure
  • FIG4 is a second flow chart of a method for processing emergency services provided by an embodiment of the present disclosure.
  • FIG5 is a third flow chart of a method for processing emergency services provided in an embodiment of the present disclosure.
  • FIG6 is a fourth flow chart of a method for processing emergency services provided in an embodiment of the present disclosure.
  • FIG7 is a schematic diagram of a structure of an emergency service processing device according to an embodiment of the present disclosure.
  • FIG8 is a second structural diagram of the emergency service processing device provided in an embodiment of the present disclosure.
  • FIG9 is a schematic diagram of the structure of a remote terminal provided in an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of the structure of a relay terminal provided in an embodiment of the present disclosure.
  • the term "and/or” describes the association relationship of associated objects, indicating that three relationships may exist.
  • a and/or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" generally indicates that the associated objects before and after are in an "or” relationship.
  • plurality in the embodiments of the present disclosure refers to two or more than two, and other quantifiers are similar thereto.
  • 5G Fifth Generation Mobile Communication Technology
  • applicable systems may be global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G new radio (NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD LTE frequency division duplex
  • TDD LTE time division duplex
  • LTE-A long term evolution advanced
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • NR new radio
  • the terminal device involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to users, a handheld device with wireless connection function, or other processing devices connected to a wireless modem, etc.
  • the name of the terminal device may also be different.
  • the terminal device may be called a user equipment (UE).
  • the wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN).
  • CN core networks
  • RAN radio access network
  • the wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device.
  • a wireless terminal device is a device that exchanges language and/or data with a wireless access network.
  • a Personal Communication Service (PCS) phone for example, a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiated Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and other devices.
  • PCS Personal Communication Service
  • SIP Session Initiated Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • a wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, which is not limited in the embodiments of the present disclosure.
  • the network device involved in the embodiments of the present disclosure may be a base station, which may include multiple cells providing services for the terminal.
  • the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names.
  • the network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network.
  • IP Internet Protocol
  • the network device may also coordinate the attribute management of the air interface.
  • the network device involved in the embodiments of the present disclosure may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present disclosure.
  • the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographical
  • Network devices and terminal devices can each use one or more antennas for multiple input multiple output (MIMO) transmission.
  • MIMO transmission can be single user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO).
  • MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.
  • FIG1 is a schematic diagram of the network architecture provided by the present disclosure.
  • the UE when the UE is out of the network coverage or the Uu interface signal is poor, it cannot directly connect to the network. It can connect to the network through a UE with a relay function.
  • the former is called a layer 3 remote terminal (Layer-3 Remote UE, also called a remote terminal), and the latter is called a layer 3 relay terminal (Layer-3 Relay UE, also called a relay terminal).
  • Layer-3 Remote UE also called a remote terminal
  • Layer-3 Relay UE also called a relay terminal
  • the remote terminal is connected to the relay terminal through the direct communication (PC5) interface, and the relay terminal is connected to the access network through the UU interface.
  • PC5 direct communication
  • the access network can be the next generation radio access network (Next Generation Radio Access Network, NG-RAN), and the access is connected to the core network.
  • the core network can be a 5G core network (5G Core, 5GC), and the core network is connected to the data network through the N6 interface.
  • FIG. 2 is a schematic diagram of a process of a remote terminal communicating with a network through a relay terminal provided by the present disclosure, as shown in FIG. 2 :
  • the network registers the remote UE and the relay UE through the Access and Mobility Management Function (AMF) and the User Plane Function (UPF), and provides the remote UE and the relay UE with the parameters required for ProSe (Proximity Service) communication (communicating through the PC5 interface), such as the relay service code (Relay Service Code) used to select the relay terminal.
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • the relay terminal establishes a relay protocol data unit (PDU session) of the Uu interface through the session management function (SMF), and the relay protocol PDU session is used to relay the data transmission of the remote terminal.
  • the relay terminal obtains the IPv6 prefix (IPv6prefix) from the network through the Internet Protocol Version 6 (IPv6) prefix proxy function.
  • IPv6prefix IPv6 prefix
  • the remote terminal performs the ProSe discovery process to discover the relay terminal.
  • the remote terminal selects the relay terminal and establishes one-to-one direct communication.
  • the communication interface between the remote terminal and the relay terminal is the PC5 interface. If the remote terminal needs to create a new PDU session, the relay terminal initiates a new PDU session establishment process.
  • the relay terminal assigns an IP address to the remote terminal.
  • the related art defines a method for a terminal to perform emergency services when the terminal directly accesses the network (that is, the terminal does not access the network through a relay terminal).
  • the AMF indicates the Emergency Service Support indicator to the terminal in the Registration Accept message, which is used to notify the terminal that the network supports emergency services, that is, the UE can request the network to conduct a PDU session for the emergency service.
  • the UE sets the request type Request Type to Emergency Request, which is used to indicate that the UE requests to establish a PDU session that supports emergency services.
  • the AMF selects the SMF that supports emergency services based on the indication and the Emergency Configuration Data to complete the PDU session establishment process, where the Emergency Configuration Data includes the Emergency single network slice selection assistance information (Single Network Slice Selection Assistance Information, S-NSSAI) and the Emergency data network name (Data Network Name, DNN).
  • S-NSSAI Single Network Slice Selection Assistance Information
  • DNN Data Network Name
  • the relevant technology also defines four different situations in which the terminal supports emergency services, including:
  • IMSI International Mobile Subscriber Identity
  • All UEs are allowed, including authenticated UEs, UEs with IMSI but unable to be authenticated, and UEs with only IMSI, can request emergency services.
  • the relevant technology defines that when a UE directly accesses a network (ie, the UE does not access the network through a relay terminal), the UE can learn from the network whether the currently accessed network supports emergency services, and under what circumstances the network supports the UE to request emergency services.
  • the remote terminal cannot establish its own PDU session, but communicates with the network with the help of the PDU session of the relay terminal. How the remote terminal selects a suitable relay terminal to support emergency services is a problem to be solved by the present disclosure.
  • FIG3 is a flowchart of a method for processing emergency services provided by an embodiment of the present disclosure. As shown in FIG3 , an embodiment of the present disclosure provides a method for processing emergency services, which is applied to a remote terminal and includes:
  • Step 310 obtaining second emergency service information corresponding to the candidate relay terminal
  • the candidate relay terminal refers to a relay terminal that can be discovered by the remote terminal
  • the second emergency service information refers to the emergency service information corresponding to the candidate relay terminal, such as the information related to the emergency service supported by the candidate relay terminal;
  • the second emergency service information may include: whether to support Emergency services, the type of emergency services required, and the parameters required to establish emergency services (such as the network that needs to be accessed, etc.).
  • the second emergency service information may be configured by the network, notified by the network, requested by the remote terminal to the candidate relay terminal, or sent by the candidate relay terminal to the remote terminal.
  • the remote terminal may have established a connection with the network or with the candidate relay terminal, and receive and save the second emergency service information related to the candidate relay terminal.
  • Step 320 determining a target relay terminal based on the first emergency service information and the second emergency service information, wherein the first emergency service information corresponds to the emergency service that the remote terminal needs to perform;
  • the first emergency service information is information related to the emergency service that the remote terminal needs to execute, such as whether the emergency service is supported, the required emergency service type, and the parameters required to establish the emergency service (such as the emergency service configuration data introduced above).
  • the first emergency service information may be configured by the network, notified by the network, or requested by the remote terminal to the relevant network function entity.
  • the candidate relay terminal may be able to establish a connection with the remote terminal, but due to the relay capability of the candidate relay terminal and the fact that the candidate relay terminal may be connected to different networks, the emergency service relay capabilities of different candidate relay terminals (i.e., whether different candidate relay terminals support providing emergency service relay for remote terminals) are different, and due to the different networks to which the candidate relay terminals are connected, whether the candidate relay terminals can provide emergency services for remote terminals is also different.
  • the remote terminal may select a candidate relay terminal that can provide the remote terminal with an emergency service relay service as a target relay terminal according to the first emergency service information and the second emergency service information.
  • Step 330 Send a first message for establishing the emergency service to the target relay terminal.
  • a first message is sent to the target relay terminal to request the target relay terminal to establish the emergency service for the remote terminal.
  • the emergency service refers to the emergency service that the remote terminal needs to execute.
  • the method for processing emergency services can be applied to relay scenarios, such as Layer-3 UE-to-Network Relay, and determines the target relay terminal through the first emergency service information and the second emergency service information, and requests the target relay terminal to establish the emergency service that the remote terminal needs to execute, thereby enabling the remote terminal to communicate with the network with the help of the PDU session of the target relay terminal, and the target relay terminal provides data transmission for the remote terminal, so that the remote terminal can obtain emergency service support, thereby solving the problem that the remote terminal cannot execute the required emergency service due to the inability to directly access the network.
  • relay scenarios such as Layer-3 UE-to-Network Relay
  • the first emergency service information includes any one of the following or a combination thereof:
  • the first protocol session unit PDU session parameter associated with the emergency service is the first protocol session unit PDU session parameter associated with the emergency service.
  • the emergency service support identifier can be used to identify whether the terminal supports emergency services
  • the first emergency service support identifier can be used to identify whether the remote terminal supports emergency services.
  • the first emergency service support identifier includes: a first emergency relay service code.
  • the emergency relay service code (Relay Service Code, RSC) can be used to identify that the terminal supports emergency service relay.
  • the first emergency relay service code refers to the emergency relay service code corresponding to the remote terminal. It should be understood that, for the remote terminal, the first emergency relay code can indicate that the remote terminal supports emergency services, and when the remote terminal sends the first emergency code to other terminals, the first emergency code can be used to indicate to other terminals that the remote terminal needs emergency services.
  • the PDU session parameters associated with the emergency service are first introduced:
  • a PDU associated with the emergency service may be established based on a user route selection policy (UE Route Selection Policy, URSP) rule.
  • UE Route Selection Policy UE Route Selection Policy
  • the terminal can select PDU session parameters such as DNN, S-NSSAI, session and service continuity (Session and Service Continuity Mode, SCC) mode and PDU session type to transmit emergency service data.
  • PDU session parameters such as DNN, S-NSSAI, session and service continuity (Session and Service Continuity Mode, SCC) mode and PDU session type to transmit emergency service data.
  • the first PDU session parameter refers to a PDU session parameter associated with an emergency service that needs to be executed by the remote terminal.
  • the first PDU session parameter includes:
  • S-NSSAI is used to uniquely identify network slices.
  • Network slicing is an on-demand networking method that allows operators to separate multiple virtual end-to-end networks on a unified infrastructure.
  • DNN can be applied to select SMF and UPF for PDU sessions, select N6 interface for PDU sessions, and determine the policy to be applied to this PDU session.
  • DNN can be applied together with S-NSSAI to allow terminals to access data networks supported in the network slice associated with S-NSSAI.
  • the emergency service S-NSSAI is used to identify the network slice associated with the emergency service; the emergency service DNN is used to identify the data network associated with the emergency service.
  • the first emergency service S-NSSAI refers to the emergency service S-NSSAI corresponding to the remote terminal, which can be understood as the S-NSSAI corresponding to the emergency service required by the remote terminal;
  • the first emergency service DNN refers to the emergency service DNN corresponding to the remote terminal, which can be understood as the DNN corresponding to the emergency service required by the remote terminal.
  • the second emergency service information includes any one of the following or a combination thereof:
  • the second emergency service support identifier refers to the emergency service support identifier corresponding to the candidate relay terminal, which is used to indicate whether the corresponding candidate relay terminal supports emergency services. It should be understood that since there can be multiple candidate relay terminals, each candidate relay terminal corresponds to a second emergency service support identifier, so there can also be multiple second emergency service support identifiers.
  • the second emergency service support identifier includes: a second emergency relay service code.
  • the second emergency relay service code refers to an emergency relay service code corresponding to the candidate relay terminal, and can be used to identify whether the candidate relay terminal supports the relay emergency service.
  • the second PDU session parameter associated with the emergency service refers to the PDU session parameter associated with the emergency service corresponding to the candidate relay terminal, which can be understood as the PDU session parameter associated with the emergency service supported by the candidate relay terminal.
  • each candidate relay terminal corresponds to a second PDU session parameter, and therefore there may also be multiple second PDU session parameters.
  • the second PDU session parameters include a second emergency service DNN and/or a second emergency service S-NSSAI.
  • the second emergency service S-NSSAI refers to the emergency service S-NSSAI corresponding to the candidate relay terminal, which can be understood as the S-NSSAI corresponding to the emergency service supported by the candidate relay terminal;
  • the second emergency service DNN refers to the emergency service DNN corresponding to the candidate relay terminal, which can be understood as the DNN corresponding to the emergency service supported by the candidate relay terminal.
  • the scenarios supported by the candidate relay terminal for providing emergency services to the remote terminal refer to the conditions under which the network allows the candidate relay terminal to provide emergency services to the remote terminal.
  • the scenarios supported by the candidate relay terminal for providing emergency services to the remote terminal include any one of the following or a combination thereof:
  • IMSI International Mobile Subscriber Identity
  • providing emergency services for the remote terminal may include two situations: a valid remote terminal and a registered remote terminal.
  • the valid remote terminal scenario means that the network only allows candidate relay terminals to relay emergency services for valid remote terminals, that is, only valid remote terminals can request emergency services, and does not support remote terminals in restricted service status to request emergency services.
  • a valid remote terminal means that the remote terminal has a legal contract and is authenticated and authorized to perform data services.
  • the registered remote terminal scenario means that the network only allows candidate relay terminals to relay emergency services for registered remote terminals, that is, the remote terminal must have a valid IMSI and be authenticated before it can request emergency services. Supports remote terminals in restricted service status to request emergency services.
  • IMSI International Mobile Subscriber Identity
  • Providing emergency services to all remote terminals means that the network allows the candidate relay terminal to relay emergency services for all remote terminals.
  • authenticated remote terminals, remote terminals with IMSI but unable to authenticate, and remote terminals with only IMSI can all request emergency services.
  • the method for processing emergency services is that the remote terminal can determine, through the first emergency service information and the second emergency service information, a candidate relay terminal that can support providing emergency services to the remote terminal, such as a candidate relay terminal with the ability to relay emergency services and the remote terminal meets the conditions for providing emergency services supported by the candidate relay terminal, thereby enabling the remote terminal to obtain emergency service support, solving the problem of the remote terminal being unable to perform emergency services due to the inability to directly access the network.
  • the acquiring the first emergency service information corresponding to the remote terminal and the second emergency service information corresponding to the candidate relay terminal includes:
  • the remote terminal can determine the PDU session parameters related to the emergency service based on the URSP rules, and the URSP rules only support provision by the Policy Control Function (PCF) entity, so the remote terminal can receive the first emergency service information through the PCF entity.
  • PCF Policy Control Function
  • the acquiring the first emergency service information corresponding to the remote terminal and the second emergency service information corresponding to the candidate relay terminal includes:
  • the second emergency service information sent by the candidate relay terminal is received.
  • the remote terminal can discover the candidate relay terminal and communicate with the candidate relay terminal, so the remote terminal can directly communicate with the candidate relay terminal to obtain the second emergency service information corresponding to the candidate relay terminal.
  • the second emergency service information is obtained by the candidate relay terminal through an access and mobility management function AMF entity and/or a policy control function PCF entity.
  • the candidate relay terminal can obtain the second emergency service information corresponding to the candidate relay terminal through the AMF entity and/or PCF entity to which the candidate relay terminal is connected. For example, the candidate relay terminal obtains the second PDU session parameters associated with the emergency service and/or the scenario supported by the candidate relay terminal to provide emergency services to the remote terminal through the AMF entity; the candidate relay terminal obtains the second emergency service support identifier through the PCF entity.
  • the receiving the second emergency service information sent by the candidate relay terminal includes:
  • the second emergency service information sent by the candidate relay terminal is received through a direct discovery message.
  • the remote terminal and the candidate relay terminal may communicate with each other through direct discovery messages.
  • Type A For example, two methods may be included: Type A and Type B:
  • the candidate relay terminal sends a broadcast Announcement message (it should be understood that a broadcast message is a direct communication message) on the corresponding frequency band according to the frequency point information received from the PCF, and the broadcast message carries the second emergency service information, thereby receiving the second emergency service information sent by the candidate relay terminal through the direct discovery message.
  • a broadcast Announcement message (it should be understood that a broadcast message is a direct communication message) on the corresponding frequency band according to the frequency point information received from the PCF, and the broadcast message carries the second emergency service information, thereby receiving the second emergency service information sent by the candidate relay terminal through the direct discovery message.
  • the remote terminal sends a Solicitation message (it should be understood that the request message is a direct communication message) on the corresponding frequency band according to the frequency information received from the PCF.
  • the Solicitation message is used to request the candidate relay terminal that receives the request message to return a Response message (it should be understood that the response message is a direct communication message) carrying the second emergency service information to the remote terminal; after receiving the request message, the candidate relay terminal returns a Response message carrying the second emergency service information to the remote terminal.
  • the second emergency service information sent by the candidate relay terminal is received through the direct discovery message.
  • the method for processing emergency services provided by the embodiment of the present disclosure enables the remote terminal to obtain second emergency service information through direct communication messages, thereby enabling the remote terminal to obtain relevant information about emergency services supported by the network to which the candidate relay terminal is connected, which is beneficial for the remote terminal to select a suitable candidate relay terminal (capable of providing emergency services) as the target relay terminal.
  • the determining a target relay terminal based on the first emergency service information and the second emergency service information includes:
  • the parameters in the first emergency service information can be matched one-to-one with the second emergency service information, and the second emergency service information with the same parameters as the first emergency service information is selected, such as the same emergency service support identifier, the same PDU session parameters associated with the emergency service, and the remote terminal meets the requirements supported by the candidate relay terminal to provide emergency services to the remote terminal.
  • the candidate relay terminal corresponding to the matched second emergency service information is determined as the target relay terminal.
  • type A and type B are taken as examples.
  • the candidate relay terminal sends a broadcast message carrying the second emergency service information on a corresponding frequency band according to the frequency point information received from the PCF.
  • the remote terminal monitors the broadcast message in the corresponding frequency band according to the frequency information received from the PCF.
  • the remote terminal parses the second emergency service information in the monitored broadcast information. If the monitored second emergency service information can correspond to the first emergency service information of the remote terminal, the remote terminal can determine that the candidate relay terminal (the candidate relay terminal corresponding to the matching second emergency service information) can provide the relay service of the emergency service that the remote terminal needs to initiate.
  • the remote terminal uses the candidate relay terminal (the candidate relay terminal corresponding to the matching second emergency service information) as the target relay terminal, and initiates a PC5 establishment request to the target relay terminal, thereby establishing a PC5 connection with the target relay terminal.
  • the remote terminal sends a request message carrying the second emergency service information on a corresponding frequency band according to the frequency point information received from the PCF.
  • the candidate relay terminal monitors the request message in the corresponding frequency band according to the frequency information received from the policy control network element. After the candidate relay terminal monitors the request message, it sends a response message carrying the second emergency service information to the remote terminal. If the second emergency service information received by the remote terminal corresponds to the first emergency service information locally at the remote terminal, the remote terminal can determine that the candidate relay terminal (the candidate relay terminal corresponding to the matching second emergency service information) can provide the relay service for the emergency service that the remote terminal needs to initiate. Optionally, the remote terminal uses the candidate relay terminal (the candidate relay terminal corresponding to the matching second emergency service information) as the target relay terminal, initiates a PC5 establishment request to the target relay terminal, and thereby establishes a PC5 connection with the target relay terminal.
  • the remote terminal selects a target relay terminal by matching the first emergency service information with the second emergency service information, and then obtains the emergency service that the terminal needs to execute from the network through the target relay terminal.
  • the first message includes the first emergency service support identifier, and the first emergency service identifier is used to trigger the target relay terminal to establish a PDU session corresponding to the first emergency service support identifier.
  • the remote terminal sends a first message to the target relay terminal, and the first message includes the first emergency service support identifier, which is used to trigger the target relay terminal to establish a PDU session corresponding to the first emergency service support identifier.
  • the PDU session is associated with the emergency service that the remote terminal needs to execute and is used to transmit emergency service data with the network.
  • the remote terminal transmits data with the network through the emergency service PDU session established by the target relay terminal, thereby realizing the acquisition of emergency services from the network through the target relay terminal.
  • FIG. 4 is a second flow chart of a method for processing emergency services provided by an embodiment of the present disclosure. As shown in FIG. 4 , an embodiment of the present disclosure provides a method for processing emergency services, which is applied to a relay terminal and includes:
  • Step 410 Send second emergency service information corresponding to the relay terminal to the remote terminal, where the second emergency service information is used to determine a target relay terminal that supports providing the remote terminal with the emergency service that the remote terminal needs to execute.
  • the relay terminal is a candidate relay terminal for the remote terminal.
  • the method for processing emergency services provided by the embodiment of the present disclosure, in which the relay terminal sends the second emergency service information to the remote terminal, solves the problem that the remote terminal cannot obtain the relevant information of the emergency services supported by the current network due to the inability to connect to the network, and enables the remote terminal to send the second emergency service information through the relay terminal, determine the relevant information of the emergency services supported by the current network, and select the relay terminal that can provide the emergency service to the remote terminal as the target relay terminal, thereby realizing the acquisition of emergency services from the network through the target relay terminal.
  • the second emergency service information includes any one of the following or a combination thereof:
  • the second emergency service support identifier includes: a second emergency relay service code.
  • the second PDU session parameters include a second emergency service data network name DNN and/or second emergency service single network slice selection auxiliary information S-NSSAI.
  • the situations in which the relay terminal supports providing emergency services to the remote terminal include any one of the following or a combination thereof:
  • IMSI International Mobile Subscriber Identity
  • the second protocol session unit PDU session parameters associated with the emergency service the scenarios supported by the relay terminal for providing emergency services to remote terminals, the second emergency relay service code, the second emergency service DNN and the second emergency service S-NSSAI, refer to the above introduction and will not be repeated here.
  • the method before the sending the second emergency service information corresponding to the relay terminal to the remote terminal, the method further includes:
  • the relay terminal obtains the policy and parameters for performing proximity services from the PCF entity, including the second emergency service support identifier.
  • the second emergency service support identifier indicates that the network supports emergency services.
  • the relay terminal sends a registration request message to the AMF entity.
  • the registration request message includes relay capability information.
  • the relay capability information is used to indicate that the UE has relay capability.
  • the AMF entity obtains the contract information of the relay terminal from the Unified Data Management (UDM) entity.
  • the contract information includes whether the relay terminal is allowed to provide emergency services to the remote terminal, and the circumstances in which the network allows the remote terminal to perform emergency services through the relay terminal (Emergency type), that is, the circumstances in which the relay terminal supports providing emergency services to the remote terminal.
  • the AMF entity can return the second PDU session parameters (such as the second emergency service DNN and the second emergency service S-NSSAI) and the situations (Emergency type) supported by the relay terminal to provide emergency services to the remote terminal in the Registration Accept message.
  • the second emergency service DNN and the second emergency service S-NSSAI indicate the DNN and slice information supported by the current network, and the Emergency type indicates the situation in which the network allows the remote terminal to perform emergency services through the relay terminal.
  • the relay terminal obtains the second emergency service information through the PCF entity and the AMF entity, so that the second emergency service information can be sent to the remote terminal.
  • the invention solves the problem that the remote terminal cannot obtain the relevant information of the emergency service supported by the current network due to the inability to connect to the network, so that the remote terminal can send the second emergency service information through the relay terminal to determine the relevant information of the emergency service supported by the current network, and select the relay terminal that can provide the emergency service to the remote terminal as the target relay terminal, so as to obtain the emergency service from the network through the target relay terminal.
  • sending second emergency service information for determining a target relay terminal to a remote terminal includes:
  • the second emergency service information is sent to the remote terminal through a direct discovery message.
  • the method further includes:
  • a first message sent by the remote terminal and used for establishing an emergency service that the remote terminal needs to execute is received.
  • the relay terminal receives a first message sent by the remote terminal.
  • an emergency service PDU session is established between the relay terminal and the network to perform emergency service relay for the remote terminal, and emergency service data is sent to the network for the remote terminal through the emergency service PDU session, and the emergency service data returned by the network is received and sent to the remote terminal.
  • the relay terminal at this time is the target relay terminal determined by the remote terminal.
  • the relay terminal transmits emergency service data to the remote terminal by establishing a PDU session, so that the remote terminal obtains the emergency service from the network through the relay terminal.
  • the first message carries a first emergency service support identifier
  • the first emergency service support identifier is used to trigger the relay terminal to establish a PDU session corresponding to the first emergency service support identifier.
  • the first message includes the first emergency service support identifier, which is used to trigger the target relay terminal to establish a PDU session corresponding to the first emergency service support identifier.
  • the PDU session is associated with the emergency service and is used to transmit emergency service data with the network.
  • the relay terminal transmits emergency service data to the remote terminal by establishing a PDU session, so that the remote terminal obtains the emergency service from the network through the relay terminal.
  • FIG5 is a flow chart of the third method for processing emergency services provided by the embodiment of the present disclosure.
  • the embodiment of the present disclosure provides a method for processing emergency services, and the relay terminal (hereinafter referred to as Relay UE) obtains the relevant information of the current network supporting emergency services from the AMF entity (hereinafter referred to as AMF).
  • AMF AMF entity
  • Relay UE sends a registration request message to AMF containing relay capability information.
  • the relay capability information is used to indicate that the UE has relay capability.
  • AMF obtains the contract information of Relay UE from the UDM entity (UDM for short), including whether Relay UE is allowed to provide emergency services to Remote UE (remote terminal) (relay emergency allowed), and the situations in which the network allows the remote terminal to perform emergency services through the relay terminal (Emergency type), that is, the situations in which the relay terminal supports and provides emergency services to the remote terminal.
  • UDM UDM entity
  • the situations in which the network allows the Remote UE to perform emergency services through the Relay UE include one or more of the following:
  • Valid remote terminals refer to: remote terminals that have legal contracts and are authenticated and authorized to perform data services.
  • Support only registered remote terminals The network only allows candidate relay terminals to relay emergency services for registered remote terminals, that is, the remote terminal must have a valid IMSI and be authenticated before it can request emergency services. Support remote terminals in restricted service status to request emergency services.
  • IMSI International Mobile Subscriber Identity
  • the network allows candidate relay terminals to relay emergency services for all remote terminals. For example, authenticated remote terminals, remote terminals with IMSI but unable to authenticate, and remote terminals with only IMSI can all request emergency services.
  • AMF determines that Relay UE can provide emergency services for Remote UE based on the relay capability information and contract information of Relay UE.
  • AMF returns the second emergency service DNN, the second emergency service S-NSSAI and the situation (Emergency type) supported by the relay terminal to provide emergency services to the remote terminal to Relay UE in the Registration Accept message.
  • the second emergency service DNN and the second emergency service S-NSSAI indicate the DNN and slice information supported by the current network.
  • Emergency type indicates the situation in which the network allows Remote UE to perform emergency services through Relay UE.
  • the present invention proposes a method for Layer-3 Remote UE to obtain through Layer-3 Relay whether the current network supports Emergency Service and what situations the Emergency Service is supported.
  • Figure 6 is a fourth flow chart of the method for processing emergency services provided by an embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a method for processing emergency services, which is used for the Remote UE to obtain relevant information about the current network supporting emergency services during the discovery process, and select the Relay UE to perform emergency services.
  • the Remote UE obtains the strategies and parameters for the neighboring services from the PCF entity, including the first emergency relay service code RSC and the first PDU session parameters associated with the emergency service, such as the first emergency service DNN, the first emergency service S-NSSAI, the first emergency service PDU session type, etc.
  • the first emergency relay service code indicates that the remote terminal connection service type is an emergency service.
  • the Discovery process is divided into two types: Type A and Type B.
  • the Relay UE sends a broadcast message, which includes the second emergency service information (second Emergency RSC, second Emergency DNN, second Emergency S-NSSAI, Emergency type), where the second Emergency RSC, second Emergency DNN, second Emergency S-NSSAI, and Emergency type are obtained by the Relay UE from the AMF during the registration process (the embodiment introduced in Figure 5).
  • second emergency service information second Emergency RSC, second Emergency DNN, second Emergency S-NSSAI, Emergency type
  • the Remote UE sends a Solicitation message to the Relay UE, which includes the first Emergency RSC.
  • the Relay UE returns a Response message to the Remote UE, which includes the second emergency service information (second Emergency RSC, second Emergency DNN, second Emergency S-NSSAI, Emergency type).
  • the second Emergency RSC, second Emergency DNN, second Emergency S-NSSAI, and Emergency type are obtained by the Relay UE from the AMF during the registration process (refer to the embodiment described in Figure 5).
  • the Relay UE can determine whether the Remote UE needs to perform the authentication process according to the Emergency type. If emergency services are provided for remote terminals with an International Mobile Subscriber Identity IMSI (IMSI required, authentication optional) or for all remote terminals (All UEs are allowed), it means that the Remote UE does not need to perform the authentication process.
  • IMSI International Mobile Subscriber Identity
  • the Relay UE can add an authentication not required indication in the response message during the discovery process. After receiving the indication, the Remote UE will no longer initiate the authentication process.
  • the relay terminal at this time is a candidate relay terminal.
  • the Remote UE selects a suitable candidate relay terminal as the target relay terminal, and needs to consider the following factors:
  • the first emergency service RSC and the associated first PDU session parameters (first emergency service DNN and/or first emergency service S-NSSAI) obtained by the Remote UE from the PCF can match the second Emergency DNN and the second Emergency S-NSSAI obtained in the discovery message.
  • the current status of the Remote UE (e.g. whether it has an IMSI, whether it is in a restricted service state, etc.) can satisfy one of the scenarios in the Emergency type.
  • the Remote UE establishes a PC5 connection with the target relay terminal.
  • the Remote UE includes the first Emergency RSC in the Direct Communication Request message (first message).
  • the target relay terminal establishes an emergency service PDU session.
  • the Remote UE can also establish a non-emergency service PDU session through the target relay terminal Relay UE. At this time, the Remote UE and the target relay terminal establish a separate PC5 connection. When the terminal is in the state of mobility restriction, it will initiate the release of non-emergency service sessions, but retain emergency service sessions.
  • the Remote UE’s data is forwarded through the target relay terminal.
  • the emergency service processing device provided in the embodiments of the present disclosure. Since the methods and devices provided in the embodiments of the present disclosure are based on the same application concept, the emergency service processing device and the emergency service processing method can refer to each other.
  • FIG. 7 is a schematic diagram of a structure of an emergency service processing device provided in an embodiment of the present disclosure.
  • the present disclosure provides an emergency service processing device, which can be applied to a remote terminal.
  • the device includes: a first acquisition unit 710, a first determination unit 720, and a first sending unit 730;
  • a first acquiring unit 710 is configured to acquire second emergency service information corresponding to a candidate relay terminal
  • a first determining unit 720 is configured to determine a target relay terminal based on first emergency service information and the second emergency service information, wherein the first emergency service information corresponds to an emergency service that the remote terminal needs to perform;
  • the first sending unit 730 is configured to send a first message for establishing the emergency service to the target relay terminal.
  • the first emergency service information includes any one of the following or a combination thereof:
  • the first protocol session unit (PDU) session parameter associated with the emergency service is the first protocol session unit (PDU) session parameter associated with the emergency service.
  • the first emergency service support identifier includes: a first emergency relay service code.
  • the first PDU session parameter includes:
  • the first emergency service data network name DNN and/or the first emergency service single network slice selection auxiliary information S-NSSAI are provided.
  • the second emergency service information includes any one of the following or a combination thereof:
  • the second emergency service support identifier includes: a second emergency relay service code.
  • the second PDU session parameters include a second emergency service DNN and/or a second emergency service S-NSSAI.
  • the scenarios supported by the candidate relay terminal for providing emergency services to the remote terminal include any one of the following or a combination thereof:
  • IMSI International Mobile Subscriber Identity
  • the first acquiring unit 710 includes:
  • the first receiving subunit is configured to receive the second emergency service information sent by the candidate relay terminal.
  • the first acquiring unit 710 includes:
  • the second receiving subunit is configured to receive the second emergency service information sent by the candidate relay terminal through a direct discovery message.
  • the first determining unit 720 includes:
  • a first determining subunit configured to determine second emergency service information matching the first emergency service information
  • the second determining subunit is configured to determine the candidate relay terminal corresponding to the matched second emergency service information as the target relay terminal.
  • the first message includes the first emergency service support identifier, and the first emergency service identifier is used to trigger the target relay terminal to establish a PDU session corresponding to the first emergency service support identifier.
  • each embodiment of the present disclosure is based on the same application concept. Since the principles of solving problems in the method for processing emergency services applied to remote terminals and the device for processing emergency services applied to remote terminals are similar and can achieve the same technical effects, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.
  • FIG. 8 is a second structural diagram of an emergency service processing device provided in an embodiment of the present disclosure.
  • the present disclosure provides an emergency service processing device, which can be applied to a relay terminal.
  • the device includes: a second sending unit 810;
  • the second sending unit 810 is used to send second emergency service information corresponding to the relay terminal to the remote terminal, where the second emergency service information is used to determine a target relay terminal that supports providing the remote terminal with the emergency service that the remote terminal needs to execute.
  • the second emergency service information includes any one of the following or a combination thereof:
  • the second emergency service support identifier includes: a second emergency relay service code.
  • the second PDU session parameters include a second emergency service data network name DNN and/or second emergency service single network slice selection auxiliary information S-NSSAI.
  • the situations in which the relay terminal supports providing emergency services to the remote terminal include any one of the following or a combination thereof:
  • IMSI International Mobile Subscriber Identity
  • the device further comprises:
  • a first receiving unit is configured to receive a second emergency service support identifier sent by a policy control function PCF entity;
  • the second receiving unit is used to send the relay capability information of the relay terminal to the access and mobility management AMF entity, and receive the second PDU session parameters sent by the AMF entity and the situation of providing emergency services to the remote terminal.
  • the second sending unit 810 includes:
  • the first sending subunit is configured to send the second emergency service information to the remote terminal via a direct discovery message.
  • the device further comprises:
  • the third receiving unit is used to receive a first message sent by the remote terminal for establishing an emergency service that the remote terminal needs to execute.
  • the first message carries a first emergency service support identifier
  • the first emergency service support identifier is used to trigger the relay terminal to establish a PDU session corresponding to the first emergency service support identifier.
  • the methods and devices provided in the various embodiments of the present disclosure are based on the same application concept. Since the principles of solving problems by the method for processing emergency services applied to relay terminals and the device for processing emergency services applied to relay terminals are similar and can achieve the same technical effects, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.
  • each functional unit in each embodiment of the present disclosure may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium.
  • the technical solution of the present disclosure is essentially or the part that contributes to the relevant technology or all or part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present disclosure.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.
  • FIG9 is a schematic diagram of the structure of a remote terminal provided in an embodiment of the present disclosure.
  • the remote terminal includes a memory 920, a transceiver 900, and a processor 910; wherein the processor 910 and the memory 920 may also be arranged physically separately.
  • the memory 920 is used to store computer programs; the transceiver 900 is used to send and receive data under the control of the processor 910; the processor 910 calls the computer program stored in the memory 920 to perform operations corresponding to any of the methods for processing emergency services applied to a remote terminal provided in the embodiments of the present disclosure according to the obtained executable instructions, for example:
  • a first message for establishing the emergency service is sent to the target relay terminal.
  • the transceiver 900 is used to receive and send data under the control of the processor 910 .
  • the bus interface 940 may include any number of interconnected buses and bridges, specifically connecting various circuits of one or more processors represented by the processor 910 and the memory represented by the memory 920.
  • the bus interface 940 may also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein.
  • the bus interface provides an interface.
  • the transceiver 900 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium includes wireless channels, wired channels, optical cables, and other transmission media.
  • a user interface 930 may also be included, which may also be an interface capable of externally connecting or internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 910 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 910 when performing operations.
  • processor 910 can be a CPU (central processing unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array) or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • the first emergency service information includes any one of the following or a combination thereof:
  • the first protocol session unit PDU session parameter associated with the emergency service is the first protocol session unit PDU session parameter associated with the emergency service.
  • the first emergency service support identifier includes: a first emergency relay service code.
  • the first PDU session parameter includes:
  • the first emergency service data network name DNN and/or the first emergency service single network slice selection auxiliary information S-NSSAI are provided.
  • the second emergency service information includes any one of the following or a combination thereof:
  • the second emergency service support identifier includes: a second emergency relay service code.
  • the second PDU session parameters include a second emergency service DNN and/or a second emergency service S-NSSAI.
  • the scenarios supported by the candidate relay terminal for providing emergency services to the remote terminal include any one of the following or a combination thereof:
  • IMSI International Mobile Subscriber Identity
  • the acquiring the second emergency service information corresponding to the candidate relay terminal includes:
  • the second emergency service information sent by the candidate relay terminal is received.
  • the receiving the second emergency service information sent by the candidate relay terminal includes:
  • the second emergency service information sent by the candidate relay terminal is received through a direct discovery message.
  • the determining a target relay terminal based on the first emergency service information and the second emergency service information includes:
  • the candidate relay terminal corresponding to the matched second emergency service information is determined as the target relay terminal.
  • the first message includes the first emergency service support identifier, and the first emergency service identifier is used to trigger the target relay terminal to establish a PDU session corresponding to the first emergency service support identifier.
  • the above-mentioned remote terminal provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned embodiment of the method for processing emergency services applied to the remote terminal, and can achieve the same technical effect.
  • the parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.
  • FIG10 is a schematic diagram of the structure of a relay terminal provided in an embodiment of the present disclosure.
  • the relay terminal includes a memory 1020, a transceiver 1000, and a processor 1010; wherein the processor 1010 and the memory 1020 may also be arranged physically separately.
  • the memory 1020 is used to store computer programs; the transceiver 1000 is used to send and receive data under the control of the processor 1010; the processor 1010 calls the computer program stored in the memory 1020 to perform operations corresponding to any of the methods for processing emergency services applied to the relay terminal provided in the embodiments of the present disclosure according to the obtained executable instructions, for example:
  • Second emergency service information corresponding to the relay terminal is sent to the remote terminal, where the second emergency service information is used to determine a target relay terminal, and the target relay terminal supports providing the remote terminal with the emergency service that the remote terminal needs to execute.
  • the transceiver 1000 is used to receive and send data under the control of the processor 1010 .
  • the bus interface 1040 may include any number of interconnected buses and bridges, specifically connecting various circuits of one or more processors represented by the processor 1010 and the memory represented by the memory 1020.
  • the bus interface 1040 may also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein.
  • the bus interface provides an interface.
  • the transceiver 1000 may be a plurality of components, namely, a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium, which transmission medium includes wireless channels, wired channels, optical cables, and other transmission media.
  • a user interface 1030 may also be included, which may also be an interface capable of externally connecting to required internal devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1010 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1010 when performing operations.
  • processor 1010 can be a CPU (central processing unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array) or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • the second emergency service information includes any one of the following or a combination thereof:
  • the second emergency service support identifier includes: a second emergency relay service code.
  • the second PDU session parameters include a second emergency service data network name DNN and/or second emergency service single network slice selection auxiliary information S-NSSAI.
  • the situations in which the relay terminal supports providing emergency services to the remote terminal include any one of the following or a combination thereof:
  • IMSI International Mobile Subscriber Identity
  • the method before the sending the second emergency service information corresponding to the relay terminal to the remote terminal, the method further includes:
  • sending second emergency service information corresponding to the relay terminal to the remote terminal includes:
  • the second emergency service information is sent to the remote terminal through a direct discovery message.
  • the method further includes:
  • a first message sent by the remote terminal and used for establishing an emergency service that the remote terminal needs to execute is received.
  • the first message carries a first emergency service support identifier
  • the first emergency service support identifier is used to trigger the relay terminal to establish a PDU session corresponding to the first emergency service support identifier.
  • the above-mentioned relay terminal provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned embodiment of the method for processing emergency services applied to the relay terminal, and can achieve the same technical effect.
  • the parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.
  • an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, wherein the computer program is used to enable the processor to execute the method applied to a remote terminal provided in each of the above embodiments, including:
  • a first message for establishing the emergency service is sent to the target relay terminal.
  • an embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method applied to the relay terminal provided in the above embodiments, including:
  • Second emergency service information corresponding to the relay terminal is sent to the remote terminal, where the second emergency service information is used to determine a target relay terminal, and the target relay terminal supports providing the remote terminal with the emergency service that the remote terminal needs to execute.
  • the processor-readable storage medium may be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (e.g., floppy disk, hard disk, tape, magneto-optical disk (MO), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor Memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.
  • magnetic storage e.g., floppy disk, hard disk, tape, magneto-optical disk (MO), etc.
  • optical storage e.g., CD, DVD, BD, HVD, etc.
  • semiconductor Memory such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)
  • the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.
  • a computer-usable storage media including but not limited to disk storage and optical storage, etc.
  • each process and/or box in the flowchart and/or block diagram, as well as the combination of the process and/or box in the flowchart and/or block diagram can be implemented by computer executable instructions.
  • These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one process or multiple processes in the flowchart and/or one box or multiple boxes in the block diagram.
  • processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.
  • processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more flows in the flowchart and/or one or more blocks in the block diagram.

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Abstract

本公开提供一种紧急业务的处理方法及装置，其中应用于远端终端的方法包括：获取候选中继终端对应的第二紧急业务信息；基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，所述第一紧急业务信息对应于所述远端终端需要执行的紧急业务，向所述目标中继终端发送用于建立所述紧急业务的第一消息。

Description

紧急业务的处理方法及装置
相关申请的交叉引用
本申请要求于2022年09月30日提交的申请号为202211217091.5，发明名称为“紧急业务的处理方法及装置”的中国专利申请的优先权，其通过引用方式全部并入本文。
技术领域
本公开涉及通信技术领域，尤其涉及一种紧急业务的处理方法及装置。
背景技术
目前，相关技术中定义了终端设备直接接入网络时，终端设备可从网络获知当前接入网络是否支持紧急业务(Emergency Service)，以及网络支持何种情形的终端设备可以请求紧急业务，从而执行终端设备所需的紧急业务。
但是，在中继场景中，由于远端终端无法注册到网络，也无法获取到与紧急业务相关的信息，导致远端终端无法从网络获取紧急业务。
发明内容
本公开实施例提供一种紧急业务的处理方法及装置，用以解决相关技术中远端终端无法获取紧急业务的问题。
第一方面，本公开实施例提供一种紧急业务的处理方法，应用于远端终端，包括：
获取候选中继终端对应的第二紧急业务信息；
基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，所述第一紧急业务信息对应于所述远端终端需要执行的紧急业务；
向所述目标中继终端发送用于建立所述紧急业务的第一消息。
可选地，所述第二紧急业务信息包括以下任一或其组合：
第二紧急业务支持标识；
与紧急业务关联的第二协议会话单元PDU会话参数；
候选中继终端支持的、为远端终端提供紧急业务的情形。
可选地，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
可选地，所述第二PDU会话参数包括第二紧急业务数据网络名称DNN和/或第二紧急业务单网络切片选择辅助信息S-NSSAI。
可选地，所述候选中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
为所有远端终端提供紧急业务。
可选地，所述获取候选中继终端对应的第二紧急业务信息，包括：
接收候选中继终端发送的第二紧急业务信息。
可选地，所述基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，包括：
确定与第一紧急业务信息匹配的第二紧急业务信息；
将所述匹配的第二紧急业务信息所对应的候选中继终端确定为所述目标中继终端。
第二方面，本公开实施例提供一种紧急业务的处理方法，应用于中继终端，包括：
向远端终端发送对应于所述中继终端的第二紧急业务信息，所述第二紧急业务信息用于确定目标中继终端，所述目标中继终端支持为所述远端终端提供所述远端终端需要执行的紧急业务。
可选地，所述第二紧急业务信息包括以下任一或其组合：
第二紧急业务支持标识；
与紧急业务关联的第二协议会话单元PDU会话参数；
中继终端支持的、为远端终端提供紧急业务的情形。
可选地，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
可选地，所述第二PDU会话参数包括第二紧急业务数据网络名称DNN和/或第二紧急业务单网络切片选择辅助信息S-NSSAI。
可选地，所述中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
为所有远端终端提供紧急业务。
可选地，所述向远端终端发送对应于所述中继终端的第二紧急业务信息，之前还包括：
接收策略控制功能PCF实体发送的第二紧急业务支持标识；和/或
向接入和移动性管理AMF实体发送所述中继终端的中继能力信息，接收所述AMF实体发送的所述第二PDU会话参数和所述为远端终端提供紧急业务的情形。
可选地，所述向远端终端发送对应于所述中继终端的第二紧急业务信息之后，还包括：
接收所述远端终端发送的用于建立所述远端终端需要执行的紧急业务的第一消息。
第三方面，本公开实施例还提供一种紧急业务的处理装置，应用于远端终端，包括：
第一获取单元，用于获取候选中继终端对应的第二紧急业务信息；
第一确定单元，用于基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，所述第一紧急业务信息对应于所述远端终端需要执行的紧急业务；
第一发送单元，用于向所述目标中继终端发送用于建立所述紧急业务的第一消息。
可选地，所述第二紧急业务信息包括以下任一或其组合：
第二紧急业务支持标识；
与紧急业务关联的第二协议会话单元PDU会话参数；
候选中继终端支持的、为远端终端提供紧急业务的情形。
可选地，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
可选地，所述第二PDU会话参数包括第二紧急业务数据网络名称DNN和/或第二紧急业务单网络切片选择辅助信息S-NSSAI。
可选地，所述候选中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
为所有远端终端提供紧急业务。
可选地，所述第一获取单元包括：
第一接收子单元，用于接收候选中继终端发送的第二紧急业务信息。
可选地，所述第一确定单元包括：
第一确定子单元，用于确定与第一紧急业务信息匹配的第二紧急业务信息；
第二确定子单元，用于将所述匹配的第二紧急业务信息所对应的候选中继终端确定为所述目标中继终端。
第四方面，本公开实施例还提供一种紧急业务的处理装置，应用于中继终端，包括：
第二发送单元，用于向远端终端发送对应于所述中继终端的第二紧急业务信息，所述第二紧急业务信息用于确定目标中继终端，所述目标中继终端支持为所述远端终端提供所述远端终端需要执行的紧急业务。
可选地，所述装置还包括：
第一接收单元，用于接收策略控制功能PCF实体发送的第二紧急业务支持标识；和/或
第二接收单元，用于向接入和移动性管理AMF实体发送所述中继终端 的中继能力信息，接收所述AMF实体发送的所述第二PDU会话参数和所述为所述远端终端提供紧急业务的情形。
可选地，所述装置还包括：
第三接收单元，用于接收所述远端终端发送的用于建立所述远端终端需要执行的紧急业务的第一消息。
第五方面，本公开实施例还提供一种远端终端，包括存储器、收发机和处理器，其中：
存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并并执行以下操作：
获取候选中继终端对应的第二紧急业务信息；
基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，所述第一紧急业务信息对应于所述远端终端需要执行的紧急业务；
向所述目标中继终端发送用于建立所述紧急业务的第一消息。
可选地，所述第二紧急业务信息包括以下任一或其组合：
第二紧急业务支持标识；
与紧急业务关联的第二PDU会话参数；
候选中继终端支持的、为远端终端提供紧急业务的情形。
可选地，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
可选地，所述第二PDU会话参数包括第二紧急业务DNN和/或第二紧急业务S-NSSAI。
可选地，所述候选中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
为所有远端终端提供紧急业务。
可选地，所述获取候选中继终端对应的第二紧急业务信息，包括：
接收候选中继终端发送的第二紧急业务信息。
可选地，所述基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，包括：
确定与第一紧急业务信息匹配的第二紧急业务信息；
将所述匹配的第二紧急业务信息所对应的候选中继终端确定为所述目标中继终端。第六方面，本公开实施例还提供一种中继终端，包括存储器、收发机和处理器，其中：
存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
向远端终端发送对应于所述中继终端的第二紧急业务信息，所述第二紧急业务信息用于确定目标中继终端，所述目标中继终端支持为所述远端终端提供所述远端终端需要执行的紧急业务。
可选地，所述向远端终端发送对应于所述中继终端的第二紧急业务信息，之前还包括：
接收策略控制功能PCF实体发送的第二紧急业务支持标识；和/或
向接入和移动性管理AMF实体发送所述中继终端的中继能力信息，接收所述AMF实体发送的第二PDU会话参数和为远端终端提供紧急业务的情形。
可选地，所述向远端终端发送对应于所述中继终端的第二紧急业务信息之后，还包括：
接收所述远端终端发送的用于建立所述远端终端需要执行的紧急业务的第一消息。
第七方面，本公开实施例还提供一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行如上所述第一方面所述的紧急业务的处理方法或第二方面所述的紧急业务的处理方法。
本公开实施例提供的紧急业务的处理方法及装置，可以应用于中继场景，如Layer-3 UE-to-Network Relay，远端终端通过获取第一紧急业务信息和所述第二紧急业务信息，通过第一紧急业务信息和所述第二紧急业务信息 确定目标中继终端，并向目标中继终端请求建立紧急业务，实现了远端终端借助目标中继终端的PDU会话与网络进行通信，由目标中继终端为远端终端提供数据传输，从而使得远端终端能够获得紧急业务支持，解决了远端终端由于无法直接接入网络导致的无法进行紧急业务的问题。
附图说明
为了更清楚地说明本公开实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本公开提供的网络架构示意图；
图2是本公开提供的远端终端通过中继终端与网络进行通信的流程示意图；
图3是本公开实施例提供的紧急业务的处理方法的流程示意图之一；
图4是本公开实施例提供的紧急业务的处理方法的流程示意图之二；
图5是本公开实施例提供的紧急业务的处理方法的流程示意图之三；
图6是本公开实施例提供的紧急业务的处理方法的流程示意图之四；
图7是本公开实施例提供的紧急业务的处理装置的结构示意图之一；
图8是本公开实施例提供的紧急业务的处理装置的结构示意图之二；
图9为本公开实施例提供的远端终端的结构示意图；
图10为本公开实施例提供的中继终端的结构示意图。
具体实施方式
本公开实施例中术语“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本公开实施例中术语“多个”是指两个或两个以上，其它量词与之类似。
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，并不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
本公开实施例提供的技术方案可以适用于多种***，尤其是5G(5th Generation Mobile Communication Technology，第五代移动通信技术)***。例如适用的***可以是全球移动通讯(global system of mobile communication，GSM)***、码分多址(code division multiple access，CDMA)***、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)通用分组无线业务(general packet radio service，GPRS)***、长期演进(long term evolution，LTE)***、LTE频分双工(frequency division duplex，FDD)***、LTE时分双工(time division duplex，TDD)***、高级长期演进(long term evolution advanced，LTE-A)***、通用移动***(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)***、5G新空口(New Radio,NR)***等。这多种***中均包括终端设备和网络设备。***中还可以包括核心网部分，例如演进的分组***(Evloved Packet System,EPS)、5G***(5GS)等。
本公开实施例涉及的终端设备，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备等。在不同的***中，终端设备的名称可能也不相同，例如在5G***中，终端设备可以称为用户设备(User Equipment，UE)。无线终端设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network,CN)进行通信，无线终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话)和具有移动终端设备的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无 线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(Session Initiated Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备。无线终端设备也可以称为***、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户装置(user device)，本公开实施例中并不限定。
本公开实施例涉及的网络设备，可以是基站，该基站可以包括多个为终端提供服务的小区。根据具体应用场合不同，基站又可以称为接入点，或者可以是接入网中在空中接口上通过一个或多个扇区与无线终端设备通信的设备，或者其它名称。网络设备可用于将收到的空中帧与网际协议(Internet Protocol，IP)分组进行相互更换，作为无线终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)通信网络。网络设备还可协调对空中接口的属性管理。例如，本公开实施例涉及的网络设备可以是全球移动通信***(Global System for Mobile communications，GSM)或码分多址接入(Code Division Multiple Access，CDMA)中的网络设备(Base Transceiver Station，BTS)，也可以是带宽码分多址接入(Wide-band Code Division Multiple Access，WCDMA)中的网络设备(NodeB)，还可以是长期演进(long term evolution，LTE)***中的演进型网络设备(evolutional Node B，eNB或e-NodeB)、5G网络架构(next generation system)中的5G基站(gNB)，也可以是家庭演进基站(Home evolved Node B，HeNB)、中继节点(relay node)、家庭基站(femto)、微微基站(pico)等，本公开实施例中并不限定。在一些网络结构中，网络设备可以包括集中单元(centralized unit，CU)节点和分布单元(distributed unit，DU)节点，集中单元和分布单元也可以地理上分开布置。
网络设备与终端设备之间可以各自使用一或多根天线进行多输入多输出(Multi Input Multi Output,MIMO)传输，MIMO传输可以是单用户MIMO(Single User MIMO,SU-MIMO)或多用户MIMO(Multiple User MIMO,MU-MIMO)。根据根天线组合的形态和数量，MIMO传输可以是2D-MIMO、3D-MIMO、FD-MIMO或massive-MIMO，也可以是分集传输或预编码传输或波束赋形传输等。
为了方便理解本公开实施例，下面介绍与本公开实施例相关的术语或背景：
(1)层3(Layer-3)终端到网络(UE-to-Network)中继(Relay)架构和流程
相关技术定义了Layer-3 UE-to-Network Relay架构和相关流程。图1是本公开提供的网络架构示意图，如图1所示，当UE处于网络覆盖范围之外或者Uu接口信号较差时，无法直接连接网络，可通过具有中继功能的UE连接网络，前者称为层3远端终端(Layer-3 Remote UE，也可以称为远端终端)，后者称为层3中继终端(Layer-3 Relay UE，也可以称为中继终端)。Layer-3UE-to-Network Relay场景下，远端终端通过直连通信(PC5)接口与中继终端连接，中继终端通过UU接口与接入网连接，接入网可以为下一代无线接入网(Next Generation Radio Access Network，NG-RAN)，接入与核心网连接，核心网可以为5G核心网(5G Core，5GC)，核心网通过N6接口与数据网连接。
图2是本公开提供的远端终端通过中继终端与网络进行通信的流程示意图，如图2所示：
1、网络通过接入和移动性管理功能(Access and Mobility Management Function，AMF)和用户面功能(User Plane Function，UPF)等为远端终端(Remote UE)和中继终端(Relay UE)注册，并向远端终端和中继终端这次提供进行ProSe(Proximity Service，邻近业务)通信(通过PC5接口通信)所需的参数，如用于选择中继终端的中继服务代码(Relay Service Code)。
2、中继终端通过会话管理功能(Session Management Function，SMF)建立Uu接口的中继协议数据单元(Protocol Data Unit，PDU会话)，所述中继协议PDU会话用于中继远端终端的数据传输。中继终端通过互联网协议第6版(Internet Protocol Version 6，IPv6)前缀代理功能从网络获取IPv6前缀(IPv6prefix)。
3、远端终端执行ProSe发现过程发现中继终端。
4、远端终端选择中继终端并建立一对一直接通信，远端终端和中继终端之间的通信接口为PC5接口。如果远端终端需要新建PDU会话，中继终端发起新的PDU会话建立过程。
5、中继终端为远端终端分配IP地址。
(2)5G***支持终端进行紧急业务的方法
相关技术定义了终端直接接入网络(也即终端不通过Relay终端接入网络)时，终端进行紧急业务的方法。
在注册(Registration)过程中，AMF在注册接受Registration Accept消息中向终端指示紧急业务支持标识Emergency Service Support indicator，用于通知终端网络支持紧急业务，也即UE可以向网络请求进行紧急业务emergency service的PDU会话。在PDU会话建立过程中，UE将请求类型Request Type设为紧急业务请求Emergency Request，用于指示UE请求建立支持紧急业务的PDU会话。AMF根据该指示和紧急业务配置数据Emergency Configuration Data来选择支持紧急业务的SMF以完成PDU会话建立过程，其中紧急业务配置数据Emergency Configuration Data包含紧急业务Emergency单网络切片选择辅助信息(Single Network Slice Selection AssistanceInformation，S-NSSAI)和紧急业务Emergency数据网络名称(Data Network Name，DNN)。
此外，相关技术还定义了终端支持紧急业务的4种不同情形，包括：
(1)仅支持有效的终端(Valid UE only)，即只有当UE具有合法签约、并且被认证和授权可以进行数据业务时，才可以请求紧急业务。不支持处于限制服务limited service状态的UE请求紧急业务。
(2)仅允许被认证的UE Only UEs that are authenticated are allowed，即UE必须具有合法IMSI、且经过认证才可以请求紧急业务。支持限制服务(limited service)状态的UE请求紧急业务。
(3)需要国际移动用户识别码(International Mobile Subscriber Identity，IMSI)身份验证可选(authentication optional)，即UE必须具有合法IMSI，即使认证失败，UE仍可请求紧急业务，此时使用IMSI作为UE标识。
(4)所有的UE都被允许(All UEs are allowed)，包括被认证的UE、具有IMSI但无法认证的UE、以及只有IMSI的UE，都可以请求紧急业务。
相关技术定义了UE直接接入网络(也即UE不通过中继终端接入网络)时，UE可从网络获知当前接入网络是否支持紧急业务，以及网络支持何种情形的UE可以请求紧急业务。
但在中继场景中，如在Layer-3 UE-to-Network Relay架构中，由于远端终端无法建立自己的PDU会话，而是借助中继终端的PDU会话与网络进行通信。远端终端如何选择合适的中继终端以支持紧急业务是本公开要解决的问题。
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，并不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
图3是本公开实施例提供的紧急业务的处理方法的流程示意图之一，如图3所示，本公开实施例提供一种紧急业务的处理方法，应用于远端终端，包括：
步骤310，获取候选中继终端对应的第二紧急业务信息；
具体地，候选中继终端是指能够被远端终端发现的中继终端，第二紧急业务信息是指候选中继终端对应的紧急业务信息，如候选中继终端支持的、紧急业务的相关的信息；示例性地，第二紧急业务信息可以包括：是否支持 紧急业务，所需要的紧急业务类型，建立紧急业务所需要的参数(如需要接入的网络等)。
第二紧急业务信息可以是网络配置的、网络通知的、远端终端向候选中继终端请求的或者候选中继终端向远端终端发送的。示例性地，中远端终端可以与网络建立过连接或与候选中继终端建立过连接，接收并保存候选中继终端相关的第二紧急业务信息。
应理解，以上是为便于理解本公开进行的举例，本公开实施例对第二紧急业务信息的获取方法不做限定。
步骤320，基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，所述第一紧急业务信息对应于所述远端终端需要执行的紧急业务；
第一紧急业务信息是与远端终端需要执行的紧急业务相关的信息，如，是否支持紧急业务，所需要的紧急业务类型，建立紧急业务所需要的参数(如上文介绍的紧急业务配置数据等)。
第一紧急业务信息可以是网络配置的、网络通知的或者远端终端向相关网络功能实体请求的。
应理解，以上是为便于理解本公开进行的举例，本公开实施例对第一紧急业务信息的获取方法不做限定。
候选中继终端的数量可以为多个，因此与候选中继终端对应的第二紧急业务信息也可以有多个。候选中继终端可能能够与远端终端建立连接，但是由于候选中继终端的中继能力以及候选中继终端可能分别与不同的网络连接等因素的影响，不同候选中继终端紧急业务中继能力(即不同的候选中继终端是否支持为远端终端提供紧急业务中继)是不同的，并且由于候选中继终端所连接的网络的不同，候选中继终端是否能够为远端终端提供紧急业务的情况也随之不同。
远端终端可以根据第一紧急业务信息和所述第二紧急业务信息选择能够为远端终端提供紧急业务中继业务的候选中继终端作为目标中继终端。
步骤330，向所述目标中继终端发送用于建立所述紧急业务的第一消息。
具体地，向目标中继终端发送第一消息，请求目标中继终端为远端终端建立所述紧急业务。所述紧急业务是指所述远端终端需要执行的紧急业务。
本公开实施例提供的紧急业务的处理方法，可以应用于中继场景，如Layer-3 UE-to-Network Relay，通过第一紧急业务信息和所述第二紧急业务信息确定目标中继终端，并向目标中继终端请求建立所述远端终端需要执行的紧急业务，实现了远端终端借助目标中继终端的PDU会话与网络进行通信，由目标中继终端为远端终端提供数据传输，从而使得远端终端能够获得紧急业务支持，解决了远端终端由于无法直接接入网络导致的无法执行所需的紧急业务的问题。
可选地，所述第一紧急业务信息，包括以下任一或其组合：
第一紧急业务支持标识；
与紧急业务关联的第一协议会话单元PDU会话参数。
具体地，对于第一紧急业务支持标识与远端终端对应的紧急业务支持标识；紧急业务支持标识可以用于标识终端是否支持紧急业务，第一紧急业务支持标识可以用于标识远端终端是否支持紧急业务。
可选地，所述第一紧急业务支持标识包括：第一紧急中继服务代码。
具体地，紧急中继服务代码(Relay Service Code，RSC)可以用于识别终端支持紧急业务中继。
第一紧急中继服务代码是指对应于远端终端的紧急中继服务代码。应理解，对于远端终端来说，第一紧急中继代码可以表示远端终端支持紧急业务，当远端终端将第一紧急代码发送给其他终端时，第一紧急代码可以用于指示其他终端所述远端终端需要紧急业务。
可选地，对于与紧急业务关联的第一协议会话单元PDU会话参数，首先对与紧急业务关联的PDU会话参数进行介绍：
示例性地，终端获取紧急业务的过程中，可以基于用户路由选择策略(UE Route Selection Policy，URSP)规则建立与紧急业务相关联的PDU会 话，用于传输紧急业务数据，终端可以通过选择DNN、S-NSSAI、会话和服务连续(Session and Service Continuity Mode，SCC)模式和PDU会话类型等PDU会话参数用于传输紧急业务数据。
第一PDU会话参数是指对应于远端终端的需要执行的紧急业务所关联的PDU会话参数。
可选地，所述第一PDU会话参数，包括：
第一紧急业务数据网络名称DNN和/或第一紧急业务单网络切片选择辅助信息S-NSSAI。
具体地，S-NSSAI用于唯一的标识网络切片，网络切片是一种按需组网的方式，可以让运营商在统一的基础设施上分离出多个虚拟的端到端网络；DNN可以应用为PDU会话选择SMF和UPF，为PDU会话选择N6接口，以及确定要应用于此PDU会话的策略。DNN可以与S-NSSAI一起应用，以允许终端接入与S-NSSAI关联的网络切片中支持的数据网络。
紧急业务S-NSSAI用于标识与紧急业务相关联的网络切片；紧急业务DNN用于标识与紧急业务相关联的数据网络。
第一紧急业务S-NSSAI是指对应于远端终端的紧急业务S-NSSAI，可以理解为远端终端需要的紧急业务所对应的S-NSSAI；第一紧急业务DNN是指对应于远端终端的紧急业务DNN，可以理解为远端终端需要的紧急业务所对应的DNN。
可选地，所述第二紧急业务信息包括以下任一或其组合：
第二紧急业务支持标识；
与紧急业务关联的第二PDU会话参数；
候选中继终端支持的、为远端终端提供紧急业务的情形。
对于第二紧急业务支持标识，是指候选中继终端对应的紧急业务支持标识，用于指示所对应的候选中继终端是否支持紧急业务。应理解，由于候选中继终端的数量可以有多个，每个候选中继终端分别对应一个第二紧急业务支持标识，因此第二紧急业务支持标识也可以有多个。
可选地，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
具体地，第二紧急中继服务代码是指对应于候选中继终端的紧急中继服务代码，可以用于标识候选中继终端是否支持中继紧急业务。
对于与紧急业务关联的第二PDU会话参数，是指与候选中继终端对应的、与紧急业务相关联的PDU会话参数，可以理解为，候选中继终端支持的紧急业务所关联的PDU会话参数。
应理解，由于候选中继终端的数量可以有多个，每个候选中继终端分别对应第二PDU会话参数，因此第二PDU会话参数也可以有多个。
可选地，所述第二PDU会话参数包括第二紧急业务DNN和/或第二紧急业务S-NSSAI。
第二紧急业务S-NSSAI是指对应于候选中继终端的紧急业务S-NSSAI，可以理解为候选中继终端支持的紧急业务所对应的S-NSSAI；第二紧急业务DNN是指对应于候选中继终端的紧急业务DNN，可以理解为候选中继终端支持的紧急业务所对应的DNN。
对于候选中继终端支持的、为远端终端提供紧急业务的情形，是指网络允许候选中继终端为处于何种条件下的远端终端提供紧急业务。
可选地，所述候选中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
为所有远端终端提供紧急业务。
具体地，对于在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务可以包括有效远端终端和注册的远端终端两种情形。
有效远端终端情形是指：网络只允许候选中继终端为有效远端终端中继紧急业务，即只有有效远端终端才可以请求紧急业务，并且不支持处于限制服务状态的远端终端请求紧急业务。有效远端终端是指：远端终端具有合法签约、并且被认证和授权可以进行数据业务。
注册的远端终端情形是指：网络只允许候选中继终端为注册的远端终端中继紧急业务，即远端终端必须具有合法IMSI、且经过认证才可以请求紧急业务。支持限制服务状态的远端终端请求紧急业务。
对于为具有国际移动用户识别码IMSI的远端终端提供紧急业务，是指网络只允许候选中继终端为有IMSI的远端终端中继紧急业务，即远端终端必须具有合法IMSI才能请求紧急业务。远端终端必须具有合法IMSI，即使认证失败，远端终端仍可请求紧急业务，此时使用IMSI作为远端终端标识。
对于为所有远端终端提供紧急业务，是指网络允许候选中继终端为所有的远端终端中继紧急业务。示例性地，被认证的远端终端、具有IMSI但无法认证的远端终端、以及只有IMSI的远端终端，都可以请求紧急业务。
本公开实施例提供的紧急业务的处理方法，远端终端通过第一紧急业务信息和第二紧急业务信息可以确定能够支持为远端终端提供紧急业务的候选中继终端，如具有中继紧急业务能力的候选中继终端且远端终端符合候选中继终端所支持的提供紧急业务的情形，从而使得远端终端能够获得紧急业务支持，解决了远端终端由于无法直接接入网络导致的无法进行紧急业务的问题。
可选地，所述获取所述远端终端对应的第一紧急业务信息和候选中继终端对应的第二紧急业务信息，包括：
接收策略控制功能PCF实体发送的所述远端终端对应的第一紧急业务信息。
具体地，如上文所述实施例中，远端终端可以基于URSP规则确定与紧急业务相关的PDU会话参数，而URSP规则仅支持由策略控制功能(Policy Control Function，PCF)实体提供，因此远端终端可以通过PCF实体接收第一紧急业务信息。
可选地，所述获取所述远端终端对应的第一紧急业务信息和候选中继终端对应的第二紧急业务信息，包括：
接收候选中继终端发送的所述第二紧急业务信息。
具体地，远端终端可以发现候选中继终端并与候选中继终端进行通信，因此远端终端可以直接与候选中继终端进行通信，获得候选中继终端对应的第二紧急业务信息。
可选地，所述第二紧急业务信息是所述候选中继终端通过接入和移动性管理功能AMF实体和/或策略控制功能PCF实体获得的。
候选中继终端可以通过候选中继终端所接入的AMF实体和/或PCF实体获得所述候选中继终端对应的第二紧急业务信息。如候选中继终端通过AMF实体获得与紧急业务关联的第二PDU会话参数和/或候选中继终端支持的、为远端终端提供紧急业务的情形；候选中继终端通过PCF实体获得第二紧急业务支持标识。
可选地，所述接收候选中继终端发送的所述第二紧急业务信息，包括：
通过直接发现消息接收候选中继终端发送的所述第二紧急业务信息。
具体地，远端终端和候选中继终端之间可以通过直接发现消息进行通信。
示例性地，可以包括A类型和B类型两种方式：
类型A：
候选中继终端根据从PCF收到的频点信息在相应的频带上发送广播Announcement消息(应理解，广播消息是一种直接通信消息)，该广播消息携带有第二紧急业务信息。从而实现通过直接发现消息接收所述候选中继终端发送的所述第二紧急业务信息。
类型B：
远端终端根据从PCF收到的频点信息在相应的频带上发送请求Solicitation消息(应理解，请求消息是一种直接通信消息)，该请求Solicitation消息用于请求接收到请求消息的候选中继终端向远端终端返回携带有第二紧急业务信息响应Response消息(应理解，响应消息是一种直接通信消息)；候选中继终端接收到请求消息后，向远端终端返回携带有第二紧急业务信息响应Response消息。从而实现通过直接发现消息接收所述候选中继终端发送的所述第二紧急业务信息。
应理解，以上是为便于理解本公开进行的举例，不应对本公开构成任何限定。
本公开实施例提供的紧急业务的处理方法，远端终端通过直接通信消息获取第二紧急业务信息，实现了远端终端获取候选中继终端所接入的网络支持的紧急业务的相关信息，有利于远端终端选择合适的(能够提供紧急业务的)候选中继终端作为目标中继终端。
可选地，所述基于所述第一紧急业务信息和所述第二紧急业务信息确定目标中继终端，包括：
确定与第一紧急业务信息匹配的第二紧急业务信息；
示例性地，可以将第一紧急业务信息中的参数与第二紧急业务信息一一对应进行匹配，选择与第一紧急业务信息参数相同的第二紧急业务信息，如紧急业务支持标识相同、与紧急业务关联的PDU会话参数相同，并且远端终端符合候选中继终端支持的、为远端终端提供紧急业务的情形。
将所述匹配的第二紧急业务信息所对应的候选中继终端确定为所述目标中继终端。
示例性地，以类型A和类型B进行举例。
类型A：
候选中继终端根据从PCF收到的频点信息在相应的频带上发送携带有第二紧急业务信息的广播消息。
相对应地，远端终端根据从PCF收到的频点信息在相应的频带对广播消息进行监听。远端终端对监听到的广播信息中的第二紧急业务信息进行解析，若监听到的第二紧急业务信息能与远端终端本地的第一紧急业务信息对应，则远端终端可以判断该候选中继终端(匹配的第二紧急业务信息所对应的候选中继终端)能够提供远端终端所需要发起的紧急业务的中继服务。可选地，远端终端将该候选中继终端(匹配的第二紧急业务信息所对应的候选中继终端)作为目标中继终端，向目标中继终端发起PC5建立请求，从而与目标中继终端建立PC5连接。
类型B：
远端终端根据从PCF收到的频点信息在相应的频带上发送携带有第二紧急业务信息的请求消息。
相对应地，候选中继终端根据从策略控制网元收到的频点信息在相应的频带对请求消息进行监听，候选中继终端监听到请求消息后，向远端终端发送携带有第二紧急业务信息的响应消息。如果远端终端接收到的第二紧急业务信息能与远端终端本地的第一紧急业务信息对应，则远端终端可以判断该候选中继终端(匹配的第二紧急业务信息所对应的候选中继终端)能够提供远端终端所需要发起的紧急业务的中继服务。可选地，远端终端将该候选中继终端(匹配的第二紧急业务信息所对应的候选中继终端)作为目标中继终端，向目标中继终端发起PC5建立请求，从而与目标中继终端建立PC5连接。
应理解，以上是为便于理解本公开进行的举例，不应对本公开构成任何限定。
本公开实施例提供的紧急业务的处理方法，远端终端通过第一紧急业务信息和第二紧急业务信息的匹配，实现了远端终端选择目标中继终端，进而通过目标中继终端从网络获取终端所需要执行的紧急业务。
可选地，所述第一消息中包含所述第一紧急业务支持标识，所述第一紧急业务标识用于触发所述目标中继终端建立与所述第一紧急业务支持标识对应的PDU会话。
具体地，远端终端向目标中继终端发送第一消息，第一消息中包含所述第一紧急业务支持标识，用于触发所述目标中继终端建立与所述第一紧急业务支持标识对应的PDU会话，所述PDU会话与远端终端需要执行的紧急业务相关联，用于与网络传输紧急业务数据。
本公开实施例提供的紧急业务的处理方法，远端终端通过目标中继终端建立的紧急业务PDU会话与网络进行数据传输，实现了通过目标中继终端从网络获取紧急业务。
图4是本公开实施例提供的紧急业务的处理方法的流程示意图之二，如图4所示，本公开实施例提供一种紧急业务的处理方法，应用于中继终端，包括：
步骤410，向远端终端发送对应于所述中继终端的第二紧急业务信息，所述第二紧急业务信息用于确定目标中继终端，所述目标中继终端支持为所述远端终端提供所述远端终端需要执行的紧急业务。
具体地，对于远端终端、第二紧急业务信息的介绍参考上文的介绍，此处不再赘述。
应理解，此时中继终端对于远端终端是候选中继终端。
本公开实施例提供的紧急业务的处理方法，由中继终端向远端终端发送第二紧急业务信息，解决了远端终端由于无法与网络连接导致的远端终端无法获取当前网络支持的紧急业务的相关信息，实现了远端终端能够通过中继终端发送第二紧急业务信息，确定当前网络支持的紧急业务的相关信息，并选择能够为远端终端提供紧急业务的中继终端作为目标中继终端，实现通过目标中继终端从网络获取紧急业务。
可选地，所述第二紧急业务信息包括以下任一或其组合：
第二紧急业务支持标识；
与紧急业务关联的第二协议会话单元PDU会话参数；
中继终端支持的、为远端终端提供紧急业务的情形。
可选地，第二紧急业务支持标识包括：第二紧急中继服务代码。
可选地，所述第二PDU会话参数包括第二紧急业务数据网络名称DNN和/或第二紧急业务单网络切片选择辅助信息S-NSSAI。
可选地，所述中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
为所有远端终端提供紧急业务。
具体地，对于第二紧急业务支持标识、与紧急业务关联的第二协议会话单元PDU会话参数、所述中继终端支持的为远端终端提供紧急业务的情形、第二紧急中继服务代码、第二紧急业务DNN和第二紧急业务S-NSSAI，参考上文的介绍，此处不再赘述。
可选地，所述向远端终端发送对应于所述中继终端的第二紧急业务信息，之前还包括：
接收策略控制功能PCF实体发送的第二紧急业务支持标识；和/或
向接入和移动性管理AMF实体发送所述中继终端的中继能力信息，接收所述AMF实体发送的所述第二PDU会话参数和所述为远端终端提供紧急业务的情形。
示例性地，中继终端从PCF实体获取进行邻近业务的策略和参数，其中包括第二紧急业务支持标识。第二紧急业务支持标识表示网络支持紧急业务。
中继终端向AMF实体发送注册请求消息，注册请求消息包含中继能力Relay capability信息，中继能力信息用于指示UE具有Relay能力。
AMF实体从统一数据管理功能(Unified Data Management，UDM)实体获取中继终端的签约信息，签约信息包括是否允许中继终端为远端终端提供紧急业务，和网络允许的远端终端通过中继终端进行紧急业务的情形(Emergency type)，即所述中继终端支持的、为远端终端提供紧急业务的情形。
AMF实体可以在注册接受Registration Accept消息中向中继终端返回第二PDU会话参数(如第二紧急业务DNN和第二紧急业务S-NSSAI)和中继终端支持的、为远端终端提供紧急业务的情形(Emergency type)。第二紧急业务DNN、第二紧急业务S-NSSAI表示当前网络支持的DNN和切片信息，Emergency type表示网络允许的远端终端通过中继终端进行紧急业务的情形。
本公开实施例提供的紧急业务的处理方法，中继终端通过PCF实体和AMF实体获得第二紧急业务信息，从而可以向远端终端发送第二紧急业务信 息，解决了远端终端由于无法与网络连接导致的远端终端无法获取当前网络支持的紧急业务的相关信息，从而使得远端终端能够通过中继终端发送第二紧急业务信息确定当前网络支持的紧急业务的相关信息，并选择能够为远端终端提供紧急业务的中继终端作为目标中继终端，实现通过目标中继终端从网络获取紧急业务。
可选地，向远端终端发送用于确定目标中继终端的第二紧急业务信息，包括：
通过直接发现消息向所述远端终端发送所述第二紧急业务信息。
参考上述实施例中类型A和类型B的介绍，此处不再赘述。
可选地，所述向远端终端发送对应于所述中继终端的第二紧急业务信息之后，还包括：
接收所述远端终端发送的用于建立所述远端终端需要执行的紧急业务的第一消息。
具体地，中继终端接收远端终端发送的第一消息，响应于第一消息，中继终端与网络之间建立紧急业务PDU会话，用于为远端终端进行紧急业务中继，通过所述紧急业务PDU会话为远端终端向网络发送紧急业务数据，接收网络返回的紧急业务数据并发送给远端终端。
应理解，此时的中继终端为远端终端确定的目标中继终端。
本公开实施例提供的紧急业务的处理方法，中继终端通过建立PDU会话为远端终端传输紧急业务数据，实现了远端终端通过中继终端从网络获取紧急业务。
可选地，所述第一消息中携带有第一紧急业务支持标识，所述第一紧急业务支持标识用于触发所述中继终端建立与所述第一紧急业务支持标识对应的PDU会话。
具体地，第一消息中包含所述第一紧急业务支持标识，用于触发所述目标中继终端建立与所述第一紧急业务支持标识对应的PDU会话，所述PDU会话与紧急业务相关联，用于与网络传输紧急业务数据。
本公开实施例提供的紧急业务的处理方法，中继终端通过建立PDU会话为远端终端传输紧急业务数据，实现了远端终端通过中继终端从网络获取紧急业务。
图5是本公开实施例提供的紧急业务的处理方法的流程示意图之三，如图5所示，本公开实施例提供一种紧急业务的处理方法，中继终端(以下简称为Relay UE)从AMF实体(以下简称为AMF)获取当前网络支持紧急业务的相关信息.
1、Relay UE向AMF发送注册请求消息包含中继能力Relay capability信息，中继能力信息用于指示UE具有Relay能力。
2、AMF从UDM实体(可以简称为UDM)获取Relay UE的签约信息，包括是否允许Relay UE为Remote UE(远端终端)提供紧急业务(relay emergency allowed)，和网络允许的远端终端通过中继终端进行紧急业务的情形(Emergency type)，即所述中继终端支持的、为远端终端提供紧急业务的情形。
网络允许的Remote UE通过Relay UE进行紧急业务的情形(所述中继终端支持的、为远端终端提供紧急业务的情形)包括以下一种或多种：
(1)仅支持有效远端终端：网络只允许候选中继终端为有效远端终端中继紧急业务，即只有有效远端终端才可以请求紧急业务，并且不支持处于限制服务状态的远端终端请求紧急业务。有效远端终端是指：远端终端具有合法签约、并且被认证和授权可以进行数据业务。
(2)仅支持注册的远端终端情形：网络只允许候选中继终端为注册的远端终端中继紧急业务，即远端终端必须具有合法IMSI、且经过认证才可以请求紧急业务。支持限制服务状态的远端终端请求紧急业务。
(3)支持具有国际移动用户识别码IMSI的远端终端提供紧急业务：网络只允许候选中继终端为有IMSI的远端终端中继紧急业务，仅支持有效的终端(Valid UE only)，即只有当UE具有合法签约、并且被认证和授权可以进行数据业务时，才可以请求紧急业务。不支持处于限制服务limited service状态的UE请求紧急业务。
(4)支持为所有远端终端提供紧急业务：网络允许候选中继终端为所有的远端终端中继紧急业务。示例性地，被认证的远端终端、具有IMSI但无法认证的远端终端、以及只有IMSI的远端终端，都可以请求紧急业务。
3、AMF根据Relay UE的中继能力信息和签约信息确定Relay UE可以为Remote UE提供紧急业务，AMF在注册接受Registration Accept消息中向Relay UE返回第二紧急业务DNN、第二紧急业务S-NSSAI和所述中继终端支持的、为远端终端提供紧急业务的情形(Emergency type)。第二紧急业务DNN和第二紧急业务S-NSSAI表示当前网络支持的DNN和切片信息，Emergency type表示网络允许的Remote UE通过Relay UE进行紧急业务的情形。
本发明提出了一种Layer-3 Remote UE通过Layer-3 Relay获取当前网络是否支持Emergency Service、以及支持何种情形的Emergency Service的方法。
图6是本公开实施例提供的紧急业务的处理方法的流程示意图之四，如图6所示，本公开实施例提供一种紧急业务的处理方法，用于Remote UE在发现过程中获取当前网络支持紧急业务的相关信息，并选择Relay UE进行紧急业务。
1、Remote UE从PCF实体获取进行邻近业务的策略和参数，其中包括第一紧急中继服务代码RSC和与紧急业务关联的第一PDU会话参数，如第一紧急业务DNN，第一紧急业务S-NSSAI、第一紧急业务PDU会话类型等，第一紧急中继服务代码表示远端终端连接业务类型为紧急业务。
2、Remote UE通过发现过程发现Relay UE。Discovery过程分为类型A和类型B两种类型。
在A类型发现过程中，Relay UE发送广播消息，该消息中包含第二紧急业务信息(第二Emergency RSC、第二Emergency DNN，第二Emergency S-NSSAI、Emergency type)其中第二Emergency RSC、第二Emergency DNN，第二Emergency S-NSSAI、Emergency type是Relay UE在注册过程中从AMF获得的(图5介绍的实施例)。
在B类型发现过程中，Remote UE向Relay UE发送请求Solicitation消息，请求消息中包含第一Emergency RSC，Relay UE向Remote UE返回响应Response消息，响应消息中包含第二紧急业务信息(第二Emergency RSC、第二Emergency DNN，第二Emergency S-NSSAI、Emergency type)。其中第二Emergency RSC、第二Emergency DNN，第二Emergency S-NSSAI、Emergency type是Relay UE在注册过程中从AMF获得的(可以参考图5介绍的实施例)。
进一步的，Relay UE可根据Emergency type确定Remote UE是否需要进行认证过程。如果为具有国际移动用户识别码IMSI的远端终端提供紧急业务(IMSI required,authentication optional)或为所有远端终端提供紧急业务(All UEs are allowed)，那么说明Remote UE不需要执行认证过程，Relay UE可在发现过程中的响应消息中增加不需要执行认证authentication not required指示，Remote UE在收到该指示后将不再发起认证过程。
应理解，此时的中继终端为候选中继终端。
3、Remote UE选择合适的候选中继终端作为目标中继终端，需要考虑以下因素：
(1)Remote UE从PCF获取的第一紧急业务RSC和关联的第一PDU会话参数(第一紧急业务DNN和/或第一紧急业务S-NSSAI)能够与发现消息中获得的第二Emergency DNN和第二Emergency S-NSSAI匹配。
(2)Remote UE当前的状态(例如是否有IMSI，是否处于限制服务limited state等)能够满足Emergency type中的一种情形。
4、Remote UE与目标中继终端建立PC5连接。Remote UE在直接通信请求Direct Communication Request消息(第一消息)中包含第一Emergency RSC。
5、目标中继终端建立紧急业务PDU会话。
另外的，Remote UE也可以通过目标中继终端Relay UE建立非紧急业务PDU会话，此时Remote UE和目标中继终端建立单独的PC5连接。当目标中 继终端处于移动能力限制Mobility restriction时，将发起释放非紧急业务会话，但是保留紧急业务会话。
6、Remote UE的数据通过目标中继终端进行转发。
下面对本公开实施例提供的紧急业务的处理装置进行介绍，由于本公开各实施例提供的方法和装置是基于同一申请构思的，紧急业务的处理装置与紧急业务的处理方法可以相互参照。
参考图7，图7是本公开实施例提供的紧急业务的处理装置的结构示意图之一，本公开实施例提供一种紧急业务的处理装置，可以应用于远端终端，所述装置包括：第一获取单元710、第一确定单元720和第一发送单元730；
第一获取单元710，用于获取候选中继终端对应的第二紧急业务信息；
第一确定单元720，用于基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，所述第一紧急业务信息对应于所述远端终端需要执行的紧急业务；
第一发送单元730，用于向所述目标中继终端发送用于建立所述紧急业务的第一消息。
可选地，所述第一紧急业务信息，包括以下任一或其组合：
第一紧急业务支持标识；
与紧急业务关联的第一协议会话单元PDU会话参数。
可选地，所述第一紧急业务支持标识包括：第一紧急中继服务代码。
可选地，所述第一PDU会话参数，包括：
第一紧急业务数据网络名称DNN和/或第一紧急业务单网络切片选择辅助信息S-NSSAI。
可选地，所述第二紧急业务信息包括以下任一或其组合：
第二紧急业务支持标识；
与紧急业务关联的第二PDU会话参数；
候选中继终端支持的、为远端终端提供紧急业务的情形。
可选地，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
可选地，所述第二PDU会话参数包括第二紧急业务DNN和/或第二紧急业务S-NSSAI。
可选地，所述候选中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
为所有远端终端提供紧急业务。
可选地，所述第一获取单元710包括：
第一接收子单元，用于接收候选中继终端发送的所述第二紧急业务信息。
可选地，所述第一获取单元710包括：
第二接收子单元用于通过直接发现消息接收候选中继终端发送的所述第二紧急业务信息。
可选地，所述第一确定单元720包括：
第一确定子单元，用于确定与第一紧急业务信息匹配的第二紧急业务信息；
第二确定子单元，用于将所述匹配的第二紧急业务信息所对应的候选中继终端确定为所述目标中继终端。
可选地，所述第一消息中包含所述第一紧急业务支持标识，所述第一紧急业务标识用于触发所述目标中继终端建立与所述第一紧急业务支持标识对应的PDU会话。
本公开各实施例提供的方法和装置是基于同一申请构思的，由于应用于远端终端的紧急业务的处理方法和应用于远端终端的紧急业务的处理装置解决问题的原理相似，且能够达到相同的技术效果，因此装置和方法的实施可以相互参见，重复之处不再赘述。
参考图8，图8是本公开实施例提供的紧急业务的处理装置的结构示意图之二，本公开实施例提供一种紧急业务的处理装置，可以应用于中继终端，所述装置包括：第二发送单元810；
第二发送单元810，用于向远端终端发送对应于所述中继终端的第二紧急业务信息，所述第二紧急业务信息用于确定目标中继终端，所述目标中继终端支持为所述远端终端提供所述远端终端需要执行的紧急业务。
可选地，所述第二紧急业务信息包括以下任一或其组合：
第二紧急业务支持标识；
与紧急业务关联的第二协议会话单元PDU会话参数；
所述中继终端支持的、所述为远端终端提供紧急业务的情形。
可选地，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
可选地，所述第二PDU会话参数包括第二紧急业务数据网络名称DNN和/或第二紧急业务单网络切片选择辅助信息S-NSSAI。
可选地，所述中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
为所有远端终端提供紧急业务。
可选地，所述装置还包括：
第一接收单元，用于接收策略控制功能PCF实体发送的第二紧急业务支持标识；和/或
所述第二接收单元，用于向接入和移动性管理AMF实体发送所述中继终端的中继能力信息，接收所述AMF实体发送的所述第二PDU会话参数和所述为远端终端提供紧急业务的情形。
可选地，所述第二发送单元810包括：
第一发送子单元，用于通过直接发现消息向所述远端终端发送所述第二紧急业务信息。
可选地，所述装置还包括：
第三接收单元，用于接收所述远端终端发送的用于建立所述远端终端需要执行的紧急业务的第一消息。
可选地，所述第一消息中携带有第一紧急业务支持标识，所述第一紧急业务支持标识用于触发所述中继终端建立与所述第一紧急业务支持标识对应的PDU会话。
本公开各实施例提供的方法和装置是基于同一申请构思的，由于应用于中继终端的紧急业务的处理方法和应用于中继终端的紧急业务的处理装置解决问题的原理相似，且能够达到相同的技术效果，因此装置和方法的实施可以相互参见，重复之处不再赘述。
需要说明的是，本公开实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个处理器可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
图9为本公开实施例提供的远端终端的结构示意图，如图9所示，该远端终端包括存储器920，收发机900和处理器910；其中，处理器910与存储器920也可以物理上分开布置。
存储器920，用于存储计算机程序；收发机900，用于在处理器910的控制下收发数据；处理器910通过调用存储器920存储的计算机程序，用于按照获得的可执行指令执行本公开实施例提供的任一所述应用于远端终端的紧急业务的处理方法对应的操作，例如：
获取候选中继终端对应的第二紧急业务信息；
基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，所述第一紧急业务信息对应于所述远端终端需要执行的紧急业务；
向所述目标中继终端发送用于建立所述紧急业务的第一消息。
具体地，收发机900用于在处理器910的控制下接收和发送数据。
其中，在图9中，总线接口940可以包括任意数量的互联的总线和桥，具体由处理器910代表的一个或多个处理器和存储器920代表的存储器的各种电路连接在一起。总线接口940还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机900可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括，这些传输介质包括无线信道、有线信道、光缆等传输介质。针对不同的远端终端，还可以包括用户接口930，用户接口930还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器910负责管理总线架构和通常的处理，存储器920可以存储处理器910在执行操作时所使用的数据。
可选的，处理器910可以是CPU(中央处理器)、ASIC(Application Specific Integrated Circuit，专用集成电路)、FPGA(Field－Programmable Gate Array，现场可编程门阵列)或CPLD(Complex Programmable Logic Device，复杂可编程逻辑器件)，处理器也可以采用多核架构。
可选地，所述第一紧急业务信息包括以下任一或其组合：
第一紧急业务支持标识；
与紧急业务关联的第一协议会话单元PDU会话参数。
可选地，所述第一紧急业务支持标识包括：第一紧急中继服务代码。
可选地，所述第一PDU会话参数，包括：
第一紧急业务数据网络名称DNN和/或第一紧急业务单网络切片选择辅助信息S-NSSAI。
可选地，所述第二紧急业务信息包括以下任一或其组合：
第二紧急业务支持标识；
与紧急业务关联的第二PDU会话参数；
候选中继终端支持的、为远端终端提供紧急业务的情形。
可选地，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
可选地，所述第二PDU会话参数包括第二紧急业务DNN和/或第二紧急业务S-NSSAI。
可选地，所述候选中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
为所有远端终端提供紧急业务。
可选地，所述获取候选中继终端对应的第二紧急业务信息，包括：
接收所述候选中继终端发送的所述第二紧急业务信息。
可选地，所述接收候选中继终端发送的所述第二紧急业务信息，包括：
通过直接发现消息接收候选中继终端发送的所述第二紧急业务信息。
可选地，所述基于所述第一紧急业务信息和所述第二紧急业务信息确定目标中继终端，包括：
确定与第一紧急业务信息匹配的第二紧急业务信息；
将所述匹配的第二紧急业务信息所对应的候选中继终端确定为所述目标中继终端。
可选地，所述第一消息中包含所述第一紧急业务支持标识，所述第一紧急业务标识用于触发所述目标中继终端建立与所述第一紧急业务支持标识对应的PDU会话。
在此需要说明的是，本公开实施例提供的上述远端终端，能够实现上述应用于远端终端的紧急业务的处理方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
图10为本公开实施例提供的中继终端的结构示意图，如图10所示，该中继终端包括存储器1020，收发机1000和处理器1010；其中，处理器1010与存储器1020也可以物理上分开布置。
存储器1020，用于存储计算机程序；收发机1000，用于在处理器1010的控制下收发数据；处理器1010通过调用存储器1020存储的计算机程序，用于按照获得的可执行指令执行本公开实施例提供的任一所述应用于中继终端的紧急业务的处理方法对应的操作，例如：
向远端终端发送对应于所述中继终端的第二紧急业务信息，所述第二紧急业务信息用于确定目标中继终端，所述目标中继终端支持为所述远端终端提供所述远端终端需要执行的紧急业务。
具体地，收发机1000用于在处理器1010的控制下接收和发送数据。
其中，在图10中，总线接口1040可以包括任意数量的互联的总线和桥，具体由处理器1010代表的一个或多个处理器和存储器1020代表的存储器的各种电路连接在一起。总线接口1040还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1000可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括，这些传输介质包括无线信道、有线信道、光缆等传输介质。针对不同的中继终端，还可以包括用户接口1030，用户接口1030还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1010负责管理总线架构和通常的处理，存储器1020可以存储处理器1010在执行操作时所使用的数据。
可选的，处理器1010可以是CPU(中央处理器)、ASIC(Application Specific Integrated Circuit，专用集成电路)、FPGA(Field－Programmable Gate Array，现场可编程门阵列)或CPLD(Complex Programmable Logic Device，复杂可编程逻辑器件)，处理器也可以采用多核架构。
可选地，所述第二紧急业务信息包括以下任一或其组合：
第二紧急业务支持标识；
与紧急业务关联的第二协议会话单元PDU会话参数；
中继终端支持的、为远端终端提供紧急业务的情形。
可选地，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
可选地，所述第二PDU会话参数包括第二紧急业务数据网络名称DNN和/或第二紧急业务单网络切片选择辅助信息S-NSSAI。
可选地，所述中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
为所有远端终端提供紧急业务。
可选地，所述向远端终端发送对应于所述中继终端的第二紧急业务信息，之前还包括：
接收策略控制功能PCF实体发送的第二紧急业务支持标识；和/或
向接入和移动性管理AMF实体发送所述中继终端的中继能力信息，接收所述AMF实体发送的所述第二PDU会话参数和所述为远端终端提供紧急业务的情形。
可选地，向远端终端发送对应于所述中继终端的第二紧急业务信息，包括：
通过直接发现消息向所述远端终端发送所述第二紧急业务信息。
可选地，所述向远端终端发送对应于所述中继终端的第二紧急业务信息之后，还包括：
接收所述远端终端发送的用于建立所述远端终端需要执行的紧急业务的第一消息。
可选地，所述第一消息中携带有第一紧急业务支持标识，所述第一紧急业务支持标识用于触发所述中继终端建立与所述第一紧急业务支持标识对应的PDU会话。
在此需要说明的是，本公开实施例提供的上述中继终端，能够实现上述应用于中继终端的紧急业务的处理方法实施例所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
另一方面，本公开实施例还提供一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行上述各实施例提供的应用于远端终端的方法，包括：
获取候选中继终端对应的第二紧急业务信息；
基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，所述第一紧急业务信息对应于所述远端终端需要执行的紧急业务；
向所述目标中继终端发送用于建立所述紧急业务的第一消息。
另一方面，本公开实施例还提供一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行上述各实施例提供的应用于中继终端的方法，包括：
向远端终端发送对应于所述中继终端的第二紧急业务信息，所述第二紧急业务信息用于确定目标中继终端，所述目标中继终端支持为所述远端终端提供所述远端终端需要执行的紧急业务。
所述处理器可读存储介质可以是处理器能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体 存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。
本领域内的技术人员应明白，本公开的实施例可提供为方法、***、或计算机程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机可执行指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机可执行指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些处理器可执行指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的处理器可读存储器中，使得存储在该处理器可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些处理器可执行指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (35)

  1. 一种紧急业务的处理方法，应用于远端终端，包括：
    获取候选中继终端对应的第二紧急业务信息；
    基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，所述第一紧急业务信息对应于所述远端终端需要执行的紧急业务；
    向所述目标中继终端发送用于建立所述紧急业务的第一消息。
  2. 根据权利要求1所述的紧急业务的处理方法，其中，所述第二紧急业务信息包括以下任一或其组合：
    第二紧急业务支持标识；
    与紧急业务关联的第二协议会话单元PDU会话参数；
    候选中继终端支持的、为远端终端提供紧急业务的情形。
  3. 根据权利要求2所述的紧急业务的处理方法，其中，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
  4. 根据权利要求2所述的紧急业务的处理方法，其中，所述第二PDU会话参数包括第二紧急业务数据网络名称DNN和/或第二紧急业务单网络切片选择辅助信息S-NSSAI。
  5. 根据权利要求2所述的紧急业务的处理方法，其中，所述候选中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
    在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
    为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
    为所有远端终端提供紧急业务。
  6. 根据权利要求1-5任一项所述的紧急业务的处理方法，其中，所述获取候选中继终端对应的第二紧急业务信息，包括：
    接收候选中继终端发送的第二紧急业务信息。
  7. 根据权利要求1-5任一项所述的紧急业务的处理方法，其中，所述基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，包括：
    确定与第一紧急业务信息匹配的第二紧急业务信息；
    将所述匹配的第二紧急业务信息所对应的候选中继终端确定为所述目标中继终端。
  8. 一种紧急业务的处理方法，应用于中继终端，包括：
    向远端终端发送对应于所述中继终端的第二紧急业务信息，所述第二紧急业务信息用于确定目标中继终端，所述目标中继终端支持为所述远端终端提供所述远端终端需要执行的紧急业务。
  9. 根据权利要求8所述的紧急业务的处理方法，其中，所述第二紧急业务信息包括以下任一或其组合：
    第二紧急业务支持标识；
    与紧急业务关联的第二协议会话单元PDU会话参数；
    中继终端支持的、为远端终端提供紧急业务的情形。
  10. 根据权利要求9所述的紧急业务的处理方法，其中，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
  11. 根据权利要求9所述的紧急业务的处理方法，其中，所述第二PDU会话参数包括第二紧急业务数据网络名称DNN和/或第二紧急业务单网络切片选择辅助信息S-NSSAI。
  12. 根据权利要求9所述的紧急业务的处理方法，其中，所述中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
    在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
    为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
    为所有远端终端提供紧急业务。
  13. 根据权利要求9-12任一项所述的紧急业务的处理方法，其中，所述向远端终端发送对应于所述中继终端的第二紧急业务信息，之前还包括：
    接收策略控制功能PCF实体发送的第二紧急业务支持标识；和/或
    向接入和移动性管理AMF实体发送所述中继终端的中继能力信息，接收所述AMF实体发送的所述第二PDU会话参数和所述为所述远端终端提供 紧急业务的情形。
  14. 根据权利要求9-12任一项所述的紧急业务的处理方法，其中，所述向远端终端发送对应于所述中继终端的第二紧急业务信息之后，还包括：
    接收所述远端终端发送的用于建立所述远端终端需要执行的紧急业务的第一消息。
  15. 一种远端终端，包括存储器、收发机和处理器：
    存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
    获取候选中继终端对应的第二紧急业务信息；
    基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，所述第一紧急业务信息对应于所述远端终端需要执行的紧急业务；
    向所述目标中继终端发送用于建立所述紧急业务的第一消息。
  16. 根据权利要求15所述的远端终端，其中，所述第二紧急业务信息包括以下任一或其组合：
    第二紧急业务支持标识；
    与紧急业务关联的第二PDU会话参数；
    候选中继终端支持的、为远端终端提供紧急业务的情形。
  17. 根据权利要求16所述的远端终端，其中，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
  18. 根据权利要求16所述的远端终端，其中，所述第二PDU会话参数包括第二紧急业务DNN和/或第二紧急业务S-NSSAI。
  19. 根据权利要求16所述的远端终端，其中，所述候选中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
    在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
    为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
    为所有远端终端提供紧急业务。
  20. 根据权利要求15-19任一项所述的远端终端，其中，所述获取候选 中继终端对应的第二紧急业务信息，包括：
    接收候选中继终端发送的第二紧急业务信息。
  21. 根据权利要求15-19任一项所述的远端终端，其中，所述基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，包括：
    确定与第一紧急业务信息匹配的第二紧急业务信息；
    将所述匹配的第二紧急业务信息所对应的候选中继终端确定为所述目标中继终端。
  22. 一种中继终端，包括存储器、收发机和处理器：
    存储器，用于存储计算机程序；收发机，用于在所述处理器的控制下收发数据；处理器，用于读取所述存储器中的计算机程序并执行以下操作：
    向远端终端发送对应于所述中继终端的第二紧急业务信息，所述第二紧急业务信息用于确定目标中继终端，所述目标中继终端支持为所述远端终端提供所述远端终端需要执行的紧急业务。
  23. 根据权利要求22所述的中继终端，其中，所述向远端终端发送对应于所述中继终端的第二紧急业务信息，之前还包括：
    接收策略控制功能PCF实体发送的第二紧急业务支持标识；和/或
    向接入和移动性管理AMF实体发送所述中继终端的中继能力信息，接收所述AMF实体发送的第二PDU会话参数和为远端终端提供紧急业务的情形。
  24. 根据权利要求22任一项所述的中继终端，其中，所述向远端终端发送对应于所述中继终端的第二紧急业务信息之后，还包括：
    接收所述远端终端发送的用于建立所述远端终端需要执行的紧急业务的第一消息。
  25. 一种紧急业务的处理装置，应用于远端终端，包括：
    第一获取单元，用于获取候选中继终端对应的第二紧急业务信息；
    第一确定单元，用于基于第一紧急业务信息和所述第二紧急业务信息，确定目标中继终端，所述第一紧急业务信息对应于所述远端终端需要执行的紧急业务；
    第一发送单元，用于向所述目标中继终端发送用于建立所述紧急业务的第一消息。
  26. 根据权利要求25所述的紧急业务的处理装置，其中，所述第二紧急业务信息包括以下任一或其组合：
    第二紧急业务支持标识；
    与紧急业务关联的第二协议会话单元PDU会话参数；
    候选中继终端支持的、为远端终端提供紧急业务的情形。
  27. 根据权利要求26所述的紧急业务的处理装置，其中，所述第二紧急业务支持标识包括：第二紧急中继服务代码。
  28. 根据权利要求26所述的紧急业务的处理装置，其中，所述第二PDU会话参数包括第二紧急业务数据网络名称DNN和/或第二紧急业务单网络切片选择辅助信息S-NSSAI。
  29. 根据权利要求26所述的紧急业务的处理装置，其中，所述候选中继终端支持的、为远端终端提供紧急业务的情形，包括以下任一或其组合：
    在远端终端具有合法签约、被网络认证和授权且可进行数据业务情况下，为所述远端终端提供紧急业务；
    为具有国际移动用户识别码IMSI的远端终端提供紧急业务；
    为所有远端终端提供紧急业务。
  30. 根据权利要求25-29所述的紧急业务的处理装置，其中，所述第一获取单元包括：
    第一接收子单元，用于接收候选中继终端发送的第二紧急业务信息。
  31. 根据权利要求25-29所述的紧急业务的处理装置，其中，所述第一确定单元包括：
    第一确定子单元，用于确定与第一紧急业务信息匹配的第二紧急业务信息；
    第二确定子单元，用于将所述匹配的第二紧急业务信息所对应的候选中继终端确定为所述目标中继终端。
  32. 一种紧急业务的处理装置，应用于中继终端，包括：
    第二发送单元，用于向远端终端发送对应于所述中继终端的第二紧急业务信息，所述第二紧急业务信息用于确定目标中继终端，所述目标中继终端支持为所述远端终端提供所述远端终端需要执行的紧急业务。
  33. 根据权利要求32任一项所述的紧急业务的处理装置，其中，所述装置还包括：
    第一接收单元，用于接收策略控制功能PCF实体发送的第二紧急业务支持标识；和/或
    第二接收单元，用于向接入和移动性管理AMF实体发送所述中继终端的中继能力信息，接收所述AMF实体发送的所述第二PDU会话参数和所述为所述远端终端提供紧急业务的情形。
  34. 根据权利要求32任一项所述的紧急业务的处理装置，其中，所述装置还包括：
    第三接收单元，用于接收所述远端终端发送的用于建立所述远端终端需要执行的紧急业务的第一消息。
  35. 一种处理器可读存储介质，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使所述处理器执行权利要求1至14任一项所述的紧急业务的处理方法。
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