WO2022067730A1 - 一种双终端设备进行数据传输的方法及装置 - Google Patents

一种双终端设备进行数据传输的方法及装置 Download PDF

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Publication number
WO2022067730A1
WO2022067730A1 PCT/CN2020/119569 CN2020119569W WO2022067730A1 WO 2022067730 A1 WO2022067730 A1 WO 2022067730A1 CN 2020119569 W CN2020119569 W CN 2020119569W WO 2022067730 A1 WO2022067730 A1 WO 2022067730A1
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WIPO (PCT)
Prior art keywords
terminal
information
base station
core network
indication information
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PCT/CN2020/119569
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English (en)
French (fr)
Inventor
李晨琬
蔺波
余芳
吴义壮
许斌
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202080105170.XA priority Critical patent/CN116250363A/zh
Priority to PCT/CN2020/119569 priority patent/WO2022067730A1/zh
Priority to EP20955754.5A priority patent/EP4210426A4/en
Publication of WO2022067730A1 publication Critical patent/WO2022067730A1/zh
Priority to US18/192,109 priority patent/US20230232366A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H04W12/043—Key management, e.g. using generic bootstrapping architecture [GBA] using a trusted network node as an anchor
    • H04W12/0431—Key distribution or pre-distribution; Key agreement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method and apparatus for data transmission by dual terminal equipment.
  • B2B business refers to the business of exchanging and transmitting data and information between enterprises and conducting transaction activities through a private network or the Internet. Reliability is very sensitive, and the available spectrum resources of the enterprise are few, so the available spectrum resources of the enterprise are very precious.
  • B2B service types can be roughly divided into three categories: remote control (RC), control to control (C2C), and motion control (motion control, MC).
  • RC remote control
  • C2C control to control
  • MC service requires end-to-end delay less than or equal to 1ms, 6 9s for reliability, 6 9s for reliability can be understood as about 30 seconds of total failure time in a year that allows the interruption of communication services.
  • the reliability of the existing terminal equipment is only 3 or 4 nines. Therefore, in order to ensure the reliability of the MC service, the reliability of the terminal equipment needs to be improved.
  • FIG. 1 shows a schematic diagram of the existing dual terminal equipment for data transmission.
  • the terminal equipment establishes a connection between the terminal equipment and the radio access network (RAN) to the user plane function (UPF) network element.
  • the protocol data unit (PDU) session between them accesses the data network (DN), in which the main terminal device and the standby terminal device are connected to different RAN and UPF network elements.
  • RAN radio access network
  • UPF user plane function
  • Embodiments of the present application provide a method and an apparatus for data transmission by dual-terminal equipment, so as to solve the problem that the existing dual-terminal equipment consumes more spectrum resources when data transmission is performed.
  • the present application provides a method for data transmission by dual terminal devices, the method includes: a first core network device determines that the first terminal and the second terminal are in a mutual backup relationship; the first core network device sends a pairing to a base station. indication information, the pairing indication information is used to indicate that the first terminal and the second terminal are in a mutual backup relationship, so that the base station determines that the first terminal is the primary terminal and the second terminal according to the pairing indication information.
  • the second terminal is a standby terminal, it sends a copy of downlink data to the first terminal and the second terminal, or sends downlink data to the first terminal and sends the downlink data to the first terminal when the first terminal fails.
  • the second terminal sends downlink data.
  • the first core network device can send pairing indication information to the base station for indicating that the first terminal and the second terminal are in a mutual backup relationship, so that the base station may send a copy of the downlink data to the first terminal and the second terminal, or may send the downlink data to the first terminal and send the downlink data to the first terminal.
  • a terminal When a terminal fails, it sends downlink data to the second terminal, so that the first terminal of the master terminal and the second terminal of the backup terminal can jointly transmit data with the base station, and only occupy a single or less frequency spectrum resources, so that not only It avoids the situation that data transmission cannot be carried out due to the failure of the main terminal equipment, minimizes the impact of terminal equipment failure on the business continuity of the terminal equipment, improves the reliability of the terminal equipment, and consumes less spectrum resources. Helps alleviate the problem of tight spectrum resources.
  • the first core network device determining that the first terminal and the second terminal are in a mutual backup relationship includes: the first core network device receiving the first terminal and the second terminal The registration request message sent, the registration request message is used to request the terminal to access the core network; after the first core network device receives the registration request information sent by the first terminal or the second terminal, The core network device acquires the identification information of the second terminal or the first terminal, and determines, according to the identification information of the second terminal or the first terminal, that the first terminal and the second terminal are mutually backup or, after receiving the registration request information sent by the first terminal or the second terminal, the first core network device obtains the registration request information from the registration request information sent by the first terminal or the second terminal The identification information of the second terminal or the first terminal, according to the identification information of the second terminal or the second terminal, it is determined that the first terminal and the second terminal are in a mutual backup relationship; or, the After receiving the registration request information sent by the first terminal or the second terminal, the first core network device obtains the identification information of the terminal
  • the first core network device determines that the first terminal and the second terminal are in a backup relationship with each other, so that the first core network device can monitor the relationship between the first terminal and the second terminal.
  • the authentication of the backup relationship between the two terminals can further realize the authentication of the backup relationship between the first terminal and the second terminal by the base station, so that when the base station determines that the first terminal is the primary terminal and the second terminal is the backup terminal, it can Send a copy of downlink data to the first terminal and the second terminal, or send downlink data to the first terminal and send downlink data to the second terminal when the first terminal fails, so that the first terminal of the main terminal and the standby terminal
  • the second terminal can jointly transmit data with the base station, and only occupy a single or less spectrum resource, so as not only to avoid the situation that the main terminal equipment fails to perform data transmission, but also to minimize the impact of terminal equipment failure.
  • the influence of the service continuity of the terminal equipment improves the reliability of the terminal equipment, and consumes less spectrum resources, which helps to alleviate the problem of the shortage of spectrum resources.
  • the method further includes: after the first core network device receives the registration request information sent by the first terminal or the second terminal, receiving the registration request information sent by the first terminal or the second terminal The second terminal sends the session establishment request information, and sends the session establishment request information to the third core network device, where the session establishment request information is used to request the base station and the fourth core network device to establish the first terminal and the all the protocol data unit PDU session shared by the second terminal.
  • the first core network device can receive the session establishment request information of the first terminal or the second terminal, and send the session establishment request information to the third core network device , so that the base station and the fourth core network equipment establish a PDU session shared by the first terminal and the second terminal, so that when any terminal accesses the network, if the SMF network element determines that the terminal that is mutually backup with the terminal has triggered the establishment of a PDU Session, you do not need to establish a PDU session again, you can share the PDU session established with the terminal that is the mutual backup terminal of the terminal, so that when the main terminal fails, the standby terminal can directly use the PDU session shared by the main terminal and the standby terminal when data transmission is performed. There is no need to re-establish a new PDU session, the impact of terminal equipment failure on the service continuity of the terminal equipment is reduced as much as possible, and the reliability of the terminal equipment is improved.
  • the method further includes: after the first core network device determines that the first terminal and the second terminal are in a mutual backup relationship, sending an association indication to a peer application layer of the terminal information, the association indication information is used to instruct the application layer of the opposite end to send downlink data to the first terminal and the second terminal when receiving the uplink data sent by the first terminal or the second terminal , the association indication information carries the Internet Protocol IP addresses of the first terminal and the second terminal or the IP addresses of the first terminal and the second terminal and the IP address of the application layer of the opposite terminal address.
  • the first core network device can send a message to the opposite terminal application layer of the terminal to indicate that the opposite terminal application layer has received the first terminal or the second terminal.
  • sending uplink data send the associated indication information of the downlink data to the first terminal and the second terminal, so that when the application layer of the opposite terminal receives the uplink data sent by any terminal, it will be in a backup relationship with the terminal and the terminal.
  • the terminal sends downlink data, so that when the terminal can only send the uplink data after receiving the downlink data or the peer application layer can send the downlink data only after receiving the uplink data, the standby terminal can also perform data transmission normally, so as to avoid the failure of the main terminal equipment. In the case of further data transmission, the impact of the terminal equipment failure on the service continuity of the terminal equipment is reduced as much as possible, and the reliability of the terminal equipment is improved.
  • the present application further provides a method for data transmission by dual-terminal devices, the method comprising: a base station receiving pairing indication information sent by a first core network device, where the pairing indication information is used to indicate the first terminal and the second terminal The terminals are in a mutual backup relationship; when the base station determines that the first terminal is the primary terminal and the second terminal is the standby terminal according to the pairing indication information, it sends a message to the first terminal and the second terminal. A copy of downlink data, or downlink data is sent to the first terminal and downlink data is sent to the second terminal when the first terminal fails.
  • the base station receives the pairing indication information sent by the first core network device, and when it is determined according to the pairing indication information that the first terminal is the master terminal and the second terminal is the standby terminal, it can send a copy downlink data, or can send downlink data to the first terminal and send downlink data to the second terminal when the first terminal fails, so that the first terminal as the primary terminal and the second terminal as the backup terminal can jointly conduct data with the base station transmission, and only occupies a single or less spectrum resource, which not only avoids the situation that data transmission cannot be carried out due to the failure of the main terminal equipment, but also reduces the impact of terminal equipment failure on the business continuity of the terminal equipment as much as possible.
  • the reliability of the terminal equipment is improved, and less spectrum resources are consumed, which helps to alleviate the problem of the shortage of spectrum resources.
  • the method further includes: receiving, by the base station, session establishment indication information sent by a third core network device, where the session establishment indication information is used to instruct the base station to establish a connection between the fourth core network device and the base station.
  • the protocol data unit PDU session shared by the first terminal and the second terminal; the base station establishes the sharing of the first terminal and the second terminal with the fourth core network device according to the session establishment indication information PDU session.
  • the base station receives the session establishment instruction information sent by the third core network device that instructs the base station and the fourth core network device to establish a protocol data unit PDU session shared by the first terminal and the second terminal, and according to the session establishment instruction information, communicates with the third
  • the quad-core network equipment establishes a PDU session shared by the first terminal and the second terminal, so that when any terminal accesses the network, if the SMF network element determines that the terminal that is the mutual backup with the terminal has triggered the establishment of the PDU session, there is no need to re-establish the PDU session.
  • the PDU session can reduce the impact of terminal equipment failure on the business continuity of the terminal equipment as much as possible, and improve the reliability of the terminal equipment.
  • the base station sending a copy of downlink data to the first terminal and the second terminal includes: the base station sending the first configuration information to the first terminal, and sending a copy of the downlink data to the first terminal.
  • the second terminal sends part or all of the first configuration information, where the first configuration information carries a group wireless network temporary identifier RNTI or a security key shared by the first terminal and the second terminal.
  • the security key is any one or more of the following situations: a key generated by the base station based on the identity of the first terminal and the identity of the second terminal; Or, the base station generates a key based on a random number; alternatively, the base station generates a key for the first terminal and the second terminal; alternatively, the security key is a core network received by the base station A key generated by the device based on the identity of the first terminal and the identity of the second terminal.
  • the base station can send the first configuration information to the first terminal, and send part or all of the first configuration information to the second terminal, so that the first terminal and the second terminal can normally perform data transmission
  • the base station can
  • the group RNTI shared by the terminal and the second terminal sends a copy of downlink data to the first terminal and the second terminal, so that the first terminal of the main terminal and the second terminal of the standby terminal can jointly perform data transmission with the gNB, and only occupy Single or less spectrum resources not only avoids the situation that data transmission cannot be carried out due to the failure of the main terminal equipment, but also reduces the impact of terminal equipment failure on the business continuity of the terminal equipment as much as possible, and improves the reliability of the terminal equipment. , and consumes less spectrum resources, which helps to alleviate the problem of the shortage of spectrum resources.
  • the method further includes: the base station sends first state indication information to the second terminal, where the first state indication information is used to instruct the terminal to enter a non-working state, and the non-working state
  • the state is a state in which the terminal does not send uplink data but receives downlink data, or a state in which the terminal does not transmit data, or a state in which the terminal does not transmit service data but transmits signaling.
  • the base station can send the first state indication information for indicating that the terminal enters the non-working state to the second terminal, so that the first terminal can normally perform data transmission, and the second terminal can not perform data transmission or the second terminal does not send Uplink data but receive a copy of downlink data sent by the base station together with the first terminal, or the second terminal does not transmit service data but transmits signaling, so that the first terminal as the primary terminal and the second terminal as the standby terminal can jointly communicate with each other.
  • the base station performs data transmission, and only occupies a single or less spectrum resource, which not only avoids the situation that the main terminal equipment fails and can no longer transmit data, but also minimizes the impact of the terminal equipment failure on the business continuity of the terminal equipment. This improves the reliability of terminal equipment, and consumes less spectrum resources, which helps to alleviate the problem of spectrum resource shortage.
  • the method further includes: the base station determines whether the first terminal is faulty, and if so, sends the first state indication information to the first terminal, and sends the second terminal to the second terminal. Sending second state indication information, where the second state indication information is used to instruct the terminal to enter a working state, where the working state is a state in which the terminal sends uplink data and receives downlink data.
  • the base station judging whether the first terminal is faulty includes: the base station acquiring fault detection information of the first terminal, where the fault detection information carries the uplink of the first terminal at least one of a reference signal, feedback NACK information, uplink data, and fault indication information, where the fault indication information is used to indicate whether the first terminal is faulty; if the fault detection information is not obtained within a preset time period, Then, it is determined that the first terminal is faulty; if the fault detection information is acquired within a preset time period, it is determined whether the first terminal is faulty according to the fault detection information.
  • the base station when the base station determines that the first terminal is faulty, it sends the first state indication information for instructing the terminal to enter the non-working state to the first terminal, and sends the second state indication for instructing the terminal to enter the working state to the second terminal information, so that the second terminal of the standby terminal can replace the first terminal of the main terminal to perform data transmission with the gNB, avoiding the situation that the main terminal equipment can no longer transmit data due to the failure of the main terminal equipment, and reducing the terminal equipment failure as much as possible.
  • the impact of the business continuity of the equipment improves the reliability of the terminal equipment.
  • the present application further provides a first core network device, the first core network device has a function of implementing the first aspect or any possible method in the design of the first aspect, and the function can be implemented by It can be realized by hardware, and can also be realized by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions, such as a processing unit and a sending unit.
  • the processing unit is configured to determine that the first terminal and the second terminal are in a mutual backup relationship
  • the sending unit is configured to send pairing indication information to the base station, where the pairing indication information is used to indicate that the first terminal and the second terminal are in a mutual backup relationship, so that all
  • the base station determines that the first terminal is the master terminal and the second terminal is the standby terminal according to the pairing indication information, it sends a copy of downlink data to the first terminal and the second terminal, or sends a copy of the downlink data to the first terminal and the second terminal.
  • the first terminal sends downlink data and sends downlink data to the second terminal when the first terminal fails.
  • the processing unit may be specifically configured to: receive a registration request message sent by the first terminal and the second terminal, where the registration request message is used to request that the terminal be connected to the core network ; After receiving the registration request information sent by the first terminal or the second terminal, obtain the identification information of the second terminal or the first terminal from the second core network device, according to the second terminal or the The identification information of the first terminal determines that the first terminal and the second terminal are in a mutual backup relationship; or, after receiving the registration request information sent by the first terminal or the second terminal, from the first terminal or the second terminal The registration request information sent by a terminal or the second terminal acquires the identification information of the second terminal or the first terminal, and determines the first terminal according to the identification information of the second terminal or the second terminal The second terminal is in a mutual backup relationship; or, after receiving the registration request information sent by the first terminal or the second terminal, the identification information of the terminals in the mutual backup relationship is obtained from the application function AF network element, According to the identification information of the terminals in the mutual backup
  • the processing unit may be further configured to receive session establishment request information sent by the first terminal or the second terminal, and send the session establishment request information to a third core network device , the session establishment request information is used to request the base station and the fourth core network device to establish a protocol data unit PDU session shared by the first terminal and the second terminal.
  • the sending unit may be further configured to send association indication information to the opposite end application layer of the terminal, where the association indication information is used to indicate that the opposite end application layer receives the first terminal or
  • the association indication information carries the IP addresses of the first terminal and the second terminal. address or the IP addresses of the first terminal and the second terminal and the IP address of the application layer of the opposite terminal.
  • the first core network device may be a chip or an integrated circuit.
  • the first core network device may include: at least one processor and a memory; the memory stores one or more computer programs; when the one or more computer programs stored in the memory are When executed by the at least one processor, the first core network device is caused to execute the foregoing first aspect or any possible design method of the foregoing first aspect.
  • the present application further provides a computer-readable storage medium, where the computer-readable storage medium includes a computer program, and when the computer program runs on a computer, causes the computer to execute the above-mentioned first aspect or the above-mentioned first aspect any of the possible design methods.
  • the present application further provides a program product, which, when the program product runs on a computer, enables the computer to execute the above-mentioned first aspect or any possible design method of the above-mentioned first aspect.
  • the present application also provides a chip, which can be coupled with the memory of the first core network device, and is used to call the computer program stored in the memory and execute the above-mentioned first aspect and any possible design thereof. method.
  • the present application further provides a base station, the base station has a function of implementing the second aspect or any possible method in the design of the second aspect, and the function can be implemented by hardware or executed by hardware corresponding software implementation.
  • the hardware or software includes one or more modules corresponding to the above functions, such as a receiving unit, a sending unit and a processing unit.
  • the receiving unit is configured to receive pairing indication information sent by the first core network device, where the pairing indication information is used to indicate that the first terminal and the second terminal are in a mutual backup relationship;
  • the sending unit is configured to, when it is determined according to the pairing indication information that the first terminal is the master terminal and the second terminal is the standby terminal, send the message to the first terminal and the second terminal.
  • the second terminal sends a copy of downlink data, or sends downlink data to the first terminal and sends downlink data to the second terminal when the first terminal fails.
  • the receiving unit may also be configured to receive session establishment indication information sent by the third core network device, where the session establishment indication information is used to instruct the base station to establish the connection between the fourth core network device and the base station.
  • the protocol data unit PDU session shared by the first terminal and the second terminal; according to the session establishment indication information, establish the PDU session shared by the first terminal and the second terminal with the fourth core network device .
  • the sending unit when sending a copy of downlink data to the first terminal and the second terminal, is specifically configured to: send the first configuration information to the first terminal, Sending part or all of the first configuration information to the second terminal, where the first configuration information carries a group wireless network temporary identifier RNTI or a security key shared by the first terminal and the second terminal.
  • the security key is any one or more of the following situations: a key generated by the base station based on the identity of the first terminal and the identity of the second terminal; Or, the base station generates a key based on a random number; alternatively, the base station generates a key for the first terminal and the second terminal; or, the core network device received by the base station is based on the first terminal The identification of the terminal and the key generated by the identification of the second terminal.
  • the sending unit may be further configured to send first state indication information to the second terminal, where the first state indication information is used to instruct the terminal to enter a non-working state, and the non-working state
  • the state is a state in which the terminal does not send uplink data but receives downlink data, or a state in which the terminal does not transmit data, or a state in which the terminal does not transmit service data but transmits signaling.
  • the processing unit may be configured to determine whether the first terminal is faulty, and if so, send the first state indication information to the first terminal, and send the information to the second terminal Second state indication information, where the second state indication information is used to instruct the terminal to enter a working state, where the working state is a state in which the terminal sends uplink data and receives downlink data.
  • the processing unit when determining whether the first terminal is faulty, is specifically configured to: acquire fault detection information of the first terminal, where the fault detection information carries the fault detection information of the first terminal. At least one of an uplink reference signal, feedback NACK information, uplink data, and fault indication information, where the fault indication information is used to indicate whether the first terminal is faulty; if the fault detection information is not obtained within a preset period of time , it is determined that the first terminal is faulty; if the fault detection information is acquired within a preset time period, it is determined whether the first terminal is faulty according to the fault detection information.
  • the base station may be a chip or an integrated circuit.
  • the base station may include: at least one processor and a memory; the memory stores one or more computer programs; when the one or more computer programs stored in the memory are executed by the at least one processor When executed, the base station is caused to execute the above-mentioned second aspect or any possible design method of the above-mentioned second aspect.
  • the present application further provides a computer-readable storage medium, where the computer-readable storage medium includes a computer program, and when the computer program is run on a computer, causes the computer to execute the above-mentioned second aspect or the above-mentioned second aspect any of the possible design methods.
  • the present application further provides a program product, which, when the program product runs on a computer, enables the computer to execute the above-mentioned second aspect or any possible design method of the above-mentioned second aspect.
  • the present application further provides a chip, which can be coupled with a memory in a terminal, and is used to invoke a computer program stored in the memory and execute the method of the second aspect and any possible design thereof.
  • the present application further provides a system for data transmission by dual terminal devices, where the system for data transmission by dual terminal devices includes a first core network device unit and a base station.
  • the first core network device is configured to perform the steps in the first aspect or performed by the first core network device in the solutions provided in the embodiments of this application;
  • the base station is configured to perform the second aspect, or Steps performed by the base station in the solutions provided in the embodiments of the present application.
  • the system for performing data transmission by dual terminal devices may further include other devices that interact with the first core network device or the base station in the solution provided in the embodiment of the present application, such as a first Core network equipment, second core network equipment, third core network equipment, fourth core network equipment, application function AF network element, first terminal, second terminal, etc., are not specifically limited in this embodiment of the present application.
  • Fig. 1 is the principle schematic diagram that the existing dual terminal equipment carries out data transmission
  • FIG. 2 is a schematic structural diagram of a system for performing data transmission with dual terminal devices to which an embodiment of the application is applied;
  • FIG. 3 is a schematic structural diagram of another system for performing data transmission by dual-terminal devices to which the embodiments of the present application are applied;
  • FIG. 4 is a schematic diagram of the architecture of another 5G system for data transmission with dual terminal devices to which the embodiments of the present application are applied;
  • FIG. 5 is a schematic flowchart of a method for data transmission by a dual terminal device according to an embodiment of the present application
  • FIG. 6 is a schematic flowchart of another method for performing data transmission by dual-terminal equipment according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a first core network device to which an embodiment of the application is applied.
  • FIG. 8 is a schematic structural diagram of another first core network device to which an embodiment of the application is applied.
  • FIG. 9 is a schematic structural diagram of a base station to which an embodiment of the application is applied.
  • FIG. 10 is a schematic structural diagram of another base station to which the embodiments of the present application are applied.
  • FIG. 2 it is a schematic structural diagram of a system for performing data transmission by dual-terminal devices to which an embodiment of the present application is applied.
  • the system 200 for data transmission by dual terminal devices may include a first core network device 201 and an access network device 202 .
  • the system 200 for data transmission by dual-terminal devices may be applicable to both low-frequency scenarios and high-frequency scenarios.
  • the application scenarios of the system 200 for data transmission by dual terminal devices provided in the embodiments of the present application include, but are not limited to, a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, Wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WIMAX) communication system, the future fifth Generation (5th generation, 5G) system or new radio (new radio, NR) communication system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA Wideband code division multiple access
  • GPRS general packet radio service
  • long term evolution long term evolution
  • LTE long term evolution
  • the first core network device 201 and the access network device 202 may communicate directly or communicate through forwarding by other devices, which is not specifically limited in this embodiment of the present application. in:
  • the first core network device 201 may include, but is not limited to, a mobility management network element.
  • a mobility management network element in addition to having the above-mentioned functions, it can also be used for mobility management in a mobile network, such as user location update, user registration network, user switching and the like.
  • the network element or entity corresponding to the mobility management network element may be the access and mobility management function (AMF) network element in the 5G network architecture
  • AMF is a service-based interface provided by AMF network elements.
  • AMF network elements can communicate with other network functions through Namf.
  • future communications such as the 6th generation (6G) system, mobility management network elements can still be
  • the AMF network element or the mobility management network element has other names, which are not limited in this embodiment of the present application.
  • the access network device 202 may include, but is not limited to: a next-generation base station (gnodeB, gNB) in 5G, an evolved node B (evolved node B, eNB), a radio network controller (radio network controller) , RNC), node B (node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB ), baseband unit (baseBand unit, BBU), transmission point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center), etc., which are not limited in the embodiments of the present application.
  • a next-generation base station (gnodeB, gNB) in 5G
  • an evolved node B evolved node B
  • eNB evolved node B
  • RNC radio network controller
  • node B node B
  • base station controller base station controller
  • the access network device 202 may also be a communication chip with a communication module.
  • the access network device 202 may serve as a radio access network (RAN) base station to provide the first terminal and the second terminal with a wireless network
  • RAN radio access network
  • the access network device 202 may function as a 4G access network—a network in an evolved UMTS terrestrial radio access network (E-UTRAN).
  • E-UTRAN evolved UMTS terrestrial radio access network
  • the access network base station, or the access network device 202 can be used as an access network base station in a 5G access network—5G RAN, or the access network device 202 can be used as an access network base station in a future wireless communication system.
  • FIG. 3 it is a schematic structural diagram of another system for performing data transmission by dual-terminal devices to which the embodiments of the present application are applied.
  • the system 300 for data transmission by dual terminal devices may also include a first terminal 301 , a second terminal 302 , and a second core network device 303 , a third core network device 304 , a fourth core network device 305 , a fifth core network device 306 , and an application function network element 307 . in:
  • the first terminal 301 and the second terminal 302 may be devices with wireless transceiver functions, and may be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they may also be deployed on water (such as ships). etc.); can also be deployed in the air (eg on airplanes, balloons, satellites, etc.).
  • the first terminal 301 and the second terminal 302 can communicate with one or more network devices of one or more communication systems, and receive network services provided by the access network device 202 .
  • the first terminal 301 and the second terminal 302 in this embodiment of the present application may be a mobile phone (or called a "cellular" phone), a computer with a mobile terminal, etc.
  • the first terminal 301 and the second terminal 302 may also be It can be user equipment (UE), terminal (terminal), mobile station (mobile station, MS), mobile phone (mobile phone), tablet computer (pad), computer with wireless transceiver function, virtual reality (virtual reality, VR) terminal, augmented reality (AR) terminal, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical (remote medical), smart grid Wireless terminals in (smart grid), wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the first terminal 301 and the second terminal 302 may also be communication chips with communication modules.
  • the second core network device 303 may include, but is not limited to, a data management network element, which is used for processing user identification, access authentication, registration, or mobility management, and the like.
  • the network element or entity corresponding to the data management network element may be a unified data management (unified data management, UDM) network element in the 5G network architecture, where Nudm is a service-based interface provided by the UDM network element, UDM network elements can communicate with other network functions through Nudm.
  • UDM unified data management
  • the data management network element may still be a UDM network element, or the data management network element has other names, which are not limited in this embodiment of the present application.
  • the third core network device 304 may include, but is not limited to, a session management network element, which is used to manage a protocol data unit (PDU) session of a terminal device, and a PDU session is a session for transmitting PDUs.
  • the terminal device needs to transmit PDUs to each other with the data network (DN) through the PDU session.
  • the PDU session is established, maintained and deleted by the session management network element.
  • Session management network elements include session management (such as session establishment, modification and release, including tunnel maintenance between user plane network elements and access network), selection and control of user plane network elements, service and session continuity (Service and Session Continuity). Continuity, SSC) mode selection, roaming and other session-related functions.
  • session management network elements include session management (such as session establishment, modification and release, including tunnel maintenance between user plane network elements and access network), selection and control of user plane network elements, service and session continuity (Service and Session Continuity). Continuity, SSC) mode selection, roaming and other
  • the network element or entity corresponding to the session management network element may be a session management function (session management function, SMF) network element in the 5G wireless communication system.
  • SMF session management function
  • future communication such as the 6th generation (the 6th generation, 6G) communication system
  • the session management network element may still be an SMF network element, or the session management network element may have other names, which are not limited in this embodiment of the present application.
  • the fourth core network device 305 may include, but is not limited to, user plane network elements, which are used for packet routing and forwarding, quality of service (quality of service, QoS) processing of user plane data, and the like.
  • the network element or entity corresponding to the user plane network element may be the user plane function (UPF) network element in the 5G wireless communication system.
  • the user plane network element may still be a UPF network element, or the user plane network element has other names, which are not limited in this embodiment of the present application.
  • the fifth core network device 306 may include, but is not limited to, network elements with open network functions, and mainly provides services that enable the 3rd generation partnership project (3GPP) network to securely communicate with third parties.
  • the service provider application function network element 307 provides network service capabilities.
  • the network exposure function network element can be a (network exposure function, NEF) network element.
  • NEF network exposure function
  • Nnef is a service-based interface provided by the NEF network element.
  • the NEF network element can communicate with other network functions through Nnef.
  • the network element with the network opening function may still be an NEF network element, or have another name, which is not limited in this embodiment of the present application.
  • the application function network element 307 is mainly used to provide application layer information to the 3GPP network.
  • the application function network element can be an application function (AF) network element, and Naf is a service-based interface provided by the AF network element.
  • the AF network element can communicate with other network functions through Naf.
  • the application function network element may still be an AF network element, or have other names, which are not limited in this embodiment of the present application.
  • the AF network element may include, for example, a service capability server (services capability server, SCS) or an application server (application server, AS).
  • the wireless communication system includes the above-mentioned AMF network element, a first terminal , the second terminal, the gNB, the UPF network element, the SMF network element, the UDM network element, the NEF network element, and the AF network element.
  • AMF location management function
  • AUSF authentication server function
  • NSF network slice selection function
  • NRF network exposure function Repository Function
  • PCF policy control function
  • UDR unified data storage
  • UDR unstructured data storage function
  • UDSF unstructured data storage function
  • the N1 interface in Figure 4 is the reference point between the first terminal and the AMF network element; the N2 interface is the reference point between the second terminal and the AMF network element; the N3 interface is the reference point between the gNB and the AMF network element, It is used for sending non-access stratum (NAS) messages and next generation application protocol (NGAP) messages, etc.; the N4 interface is the reference point for gNB and UPF network elements, and is used to transmit the user plane
  • the N5 interface is the reference point between the SMF and the UPF, which is used to transmit information such as the tunnel identification information of the N4 connection, the data buffer indication information, and the downlink data notification message; the N6 interface is the connection between the UPF network element and the DN. The reference point for transmitting user plane data, etc.
  • control plane network elements such as the AMF network element, the SMF network element, the UDM network element, the NEF network element, or the AF network element shown in FIG. 4 may also use service interfaces for interaction.
  • the service interface provided by the AMF network element can be Namf
  • the service interface provided by the SMF network element can be Nsmf
  • the service interface provided by the UDM network element can be Nudm
  • the service interface provided by the NEF network element It can be Nnef
  • the service interface provided by the AF network element externally can be Naf.
  • the above network elements or functions may be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (eg, a cloud platform).
  • the above network elements or functions can be divided into one or more services, and further, services that exist independently of network functions may also appear.
  • an instance of the above-mentioned function, or an instance of a service included in the above-mentioned function, or an instance of a service that exists independently of a network function may be referred to as a service instance.
  • Carrying may mean that certain information is used to carry certain information or data, or it may mean that certain information is composed of certain information.
  • the mutual backup relationship in this embodiment of the present application, means that a certain terminal can replace a certain terminal to perform data transmission when a certain terminal fails.
  • the ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority or priority of multiple objects. Importance.
  • the first terminal and the second terminal are only for distinguishing different terminals, but do not indicate the difference in priority or importance of the two terminals.
  • references to "one embodiment” or “some embodiments” or the like described in the embodiments of the present application mean that a particular feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the present application.
  • appearances of the phrases “in one embodiment,” “in some embodiments,” “in other embodiments,” “in other embodiments,” etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless specifically emphasized otherwise.
  • the terms “including”, “including”, “having” and their variants mean “including but not limited to” unless specifically emphasized otherwise.
  • the first core network device is an AMF network device.
  • the second core network device takes the UDM network element as an example
  • the third core network device takes the SMF network element as an example
  • the fourth core network device takes the UPF network element as an example
  • the access network device takes the gNB as an example.
  • the method flow includes the following steps:
  • S501 The first terminal and the second terminal send registration request information to an AMF network element.
  • the AMF network element receives the registration request information from the first terminal and the second terminal.
  • the registration request information is used to request that the terminal be connected to the core network.
  • the terminal may send registration request information carrying the identification information of the terminal to the AMF network element, and the registration request may carry the identification information of the terminal.
  • the identification information of the terminal may be the international mobile equipment identity (IMEI) of the terminal, or the user permanent identifier (SUPI), or the user concealed identifier (SUCI), or other Information that can identify the terminal is not specifically limited in this embodiment of the present application.
  • the first terminal and the second terminal send the registration request information to the AMF network element, which can be expressed as that after the first terminal sends the registration request information to the AMF network element, the second terminal sends the registration request information to the AMF network element. It can also be expressed that after the second terminal sends the registration request information to the AMF network element, the first terminal sends the registration request information to the AMF network element, or it can also be expressed that the first terminal and the second terminal simultaneously send the registration request information to the AMF network element
  • the network element sends registration request information, which is not specifically limited in this embodiment of the present application.
  • the AMF network element determines that the first terminal and the second terminal are in a mutual backup relationship.
  • the AMF network element may obtain the identification information of the second terminal or the first terminal from the UDM network element, according to the identification information of the second terminal or the first terminal. The information determines that the first terminal and the second terminal are in a mutual backup relationship.
  • the AMF network element may send the subscription request information to the UDM network element, wherein the subscription request information is used to request the UDM network element to return the identification information of the terminal that is mutually backup with the first terminal,
  • the subscription request information carries the identification information of the first terminal.
  • the UDM network element receives the subscription request information from the AMF network element, it can determine, according to the identification information of the first terminal, that the terminal that is mutually backup with the first terminal is the second terminal, and send the subscription information to the AMF network element. carries the identification information of the second terminal.
  • the AMF network element may determine, according to the identification information of the second terminal, that the first terminal and the second terminal are in a mutual backup relationship.
  • the AMF network element may obtain the identification information of the second terminal or the first terminal from the registration request information sent by the first terminal or the second terminal, It is determined according to the identification information of the first terminal or the second terminal that the first terminal and the second terminal are in a mutual backup relationship.
  • the registration request information of the first terminal may carry identification information of a terminal that is mutually backup with the first terminal, for example, identification information of the second terminal.
  • the registration request information of the second terminal may carry identification information of a terminal that is mutually backup with the second terminal, for example, identification information of the first terminal.
  • the AMF network element can obtain the identification information of the second terminal from the registration request information sent by the first terminal, and determine according to the identification information of the second terminal that the first terminal and the second terminal are mutually backup relation.
  • the AMF network element can obtain the identification information of the terminals in the mutual backup relationship from the AF network element, and according to the identification information of the terminals in the mutual backup relationship It is determined that the first terminal and the second terminal are in a mutual backup relationship.
  • backup information may be preset in the AF network element, wherein the backup information includes identification information of terminals in a mutual backup relationship, and the identification information of the terminal may be the IMEI, or SUPI, or SUCI of the terminal, or may be a general public
  • the subscription identifier generator public subscription identifier, GPSI
  • the AF network element may send the backup information to the SMF network element, and correspondingly, the SMF network element receives the backup information from the AF network element.
  • the SMF network element can send the backup information to the UDM network element.
  • the UDM network element After receiving the backup information from the SMF network element, the terminal translates the identification information of the terminal from GPSI into the IMEI of the terminal, or SUPI, or SUCI, or other information that can identify the terminal, and then sends the translated backup information to the AMF network. Yuan. If the identification information of the terminal is not GPSI, the SMF network element can directly send the backup information to the AMF network element. After receiving the registration request information of the first terminal, the AMF network element may determine that the first terminal and the second terminal are in a mutual backup relationship according to the backup information from the SMF network element or the UDM network element.
  • the AMF network element may obtain, from the SMF network element, the identification information of the terminals that are in a mutual backup relationship or support the same service.
  • the identification information of the terminals supporting the same service determines that the first terminal and the second terminal are in a mutual backup relationship.
  • backup information or service information may be preset in the SMF network element, wherein the backup information carries the identification information of the terminals in a mutual backup relationship, and the service information carries the identification information of the terminals supporting the same service.
  • the identification information of the terminals may be It is the IMEI of the terminal, or the SUPI, or the SUCI, and may also be the GPSI, or other information that can identify the terminal, which is not specifically limited in this embodiment of the present application. If the identification information of the terminal is GPSI, the SMF network element can send the backup information to the UDM network element. Correspondingly, after receiving the backup information from the SMF network element, the UDM network element translates the identification information of the terminal from GPSI to the terminal's identification information.
  • the AMF network element may determine that the first terminal and the second terminal are in a mutual backup relationship according to the backup information from the SMF network element or the UDM network element.
  • backup information or service information may be preset in the SMF network element, wherein the backup information carries the identification information of the terminals in a mutual backup relationship, and the service information carries the identification information of the terminals supporting the same service, wherein the identification of the terminal
  • the information may be the IMEI of the terminal, or the SUPI, or the SUCI, or may be the GPSI, or other information that can identify the terminal, which is not specifically limited in this embodiment of the present application.
  • the identification information of the terminal is identification information that cannot be identified by the AMF network element or gNB, such as GPSI
  • the identification information of the terminal is translated or mapped into identification information that can be identified by the AMF network element or gNB, such as AMF UE NGAP ID or RAN UE NGAP ID, and then send the translated or mapped backup information to the AMF network element.
  • the AMF network element may determine that the first terminal and the second terminal are in a mutual backup relationship according to the backup information from the SMF network element.
  • the AMF network element after receiving the registration request information of the first terminal or the second terminal, determines that the first terminal and the second terminal are in a mutual backup relationship, so that the AMF network element can monitor the first terminal and the second terminal.
  • the authentication of the backup relationship can further realize the authentication of the backup relationship between the first terminal and the second terminal by the gNB, so that when the gNB determines that the first terminal is the main terminal and the second terminal is the backup terminal, it can One terminal and the second terminal send a copy of downlink data, or can send downlink data to the first terminal and send downlink data to the second terminal when the first terminal fails, so that the first terminal of the primary terminal and the first terminal of the standby terminal can
  • the two terminals can jointly perform data transmission with the gNB, and only occupy a single or less spectrum resource, which not only avoids the situation that the main terminal equipment fails and cannot perform data transmission, but also reduces the impact of terminal equipment failure on the terminal equipment as much as possible. This improves the reliability of terminal equipment, and consume
  • the first terminal or the second terminal sends session establishment request information to the AMF network element.
  • the AMF network element receives the session establishment request information from the first terminal or the second terminal, and sends the session establishment request information to the SMF network element.
  • the session establishment request information is used to request the SMF network element to establish a PDU session shared by the first terminal and the second terminal.
  • the AMF network element receives session establishment request information from the first terminal, and sends the session establishment request information to the SMF network element, wherein the session establishment request information is used to request the SMF network element to establish the first terminal and the SMF network element.
  • the PDU session shared with the first terminal is a mutual backup terminal.
  • the session establishment request information may carry session establishment indication information, and the session establishment indication information is used to instruct the gNB and the UPF network element to establish the first terminal and communicate with the first terminal.
  • the terminal is a PDU session shared by the terminals that are backup to each other.
  • the establishment process is that the SMF network element sends the CN Tunnel Info (UPF network element address information) and the session establishment instruction information to the AMF network element, and sends it to the gNB, and the gNB sends the AN Tunnel Info (gNB address information) is sent to the AMF network element, and is forwarded by the AMF network element to the SMF network element, and then the first terminal between the gNB and the UPF network element shares the PDU session between the first terminal and the terminal that is in a backup relationship with the first terminal.
  • UPF network element address information UPF network element address information
  • gNB address information AN Tunnel Info
  • the first terminal may send the session establishment request information to the AMF network element, and correspondingly, the AMF network element receives the session establishment request information from the first terminal , and send the session establishment request information to the SMF network element, where the session establishment request information is used to request the SMF network element to establish a PDU session exclusively shared by the first terminal.
  • the second terminal may send the session establishment request information to the AMF network element.
  • the AMF network element receives the session establishment request information from the second terminal, and sends the session establishment request information to the AMF network element.
  • the information is sent to the SMF network element, wherein the session establishment request information is used to request the SMF network element to establish a PDU session exclusively for the second terminal.
  • the session-related subscription information includes a mutual backup relationship
  • the identification information of the terminal for example, the identification information of the first terminal and the second terminal, so that the SMF network element or the UPF network element determines that any PDU session can be selected to send a piece of data to the gNB, for example, the PDU of the first terminal can be selected.
  • the session sends a copy of data to the gNB.
  • the gNB can send a copy to either the first terminal or the second terminal or the first terminal and the second terminal. data. If the gNB determines that the first terminal is faulty, the gNB may notify the core network device to change the PDU session, for example, the PDU session of the second terminal may be used to send a piece of data to the gNB.
  • the first terminal may send the session establishment request information to the AMF network element, and correspondingly, the AMF network element receives the session establishment request information from the first terminal , and send the session establishment request information to the SMF network element, where the session establishment request information is used to request the SMF network element to establish a PDU session exclusively shared by the first terminal.
  • the second terminal may send the session establishment request information to the AMF network element.
  • the AMF network element receives the session establishment request information from the second terminal, and sends the session establishment request information to the AMF network element.
  • the information is sent to the SMF network element, wherein the session establishment request information is used to request the SMF network element to establish a PDU session exclusively for the second terminal.
  • the session-related subscription information includes the identification information of the terminals in a backup relationship with each other. For example, the identification information of the first terminal and the second terminal, so that the SMF network element or the UPF network element will use the PDU sessions of the first terminal and the second terminal respectively to send two copies of data to the gNB, and the gNB can receive the data sent by the AMF network element.
  • pairing the indication information it is determined that the first terminal and the second terminal are in a mutual backup relationship, so that the gNB only sends one copy of data to the first terminal and the second terminal.
  • the AMF network element sends the session establishment request information to the SMF network element, which may be determined by the AMF network element.
  • the AMF network element Before the first terminal and the second terminal are in a mutual backup relationship, send the session establishment request information to the SMF network element, or the AMF network element can send the session establishment request information to the SMF network element after determining that the first terminal and the second terminal are in a mutual backup relationship Request information, which is not specifically limited in this embodiment of the present application.
  • step 503 is an optional step, and the first terminal may send session establishment request information for requesting to establish a PDU session exclusive to the first terminal to the AMF network element, and the second terminal may send the session establishment request information to the AMF network element.
  • the AMF network element sends session establishment request information for requesting establishment of a PDU session exclusive to the second terminal, which is not specifically limited in this embodiment of the present application.
  • the AMF network element may receive the session establishment request information of the first terminal or the second terminal, and send the session establishment request information to the SMF network element to Make the SMF network element send the session establishment indication information to the gNB to instruct the gNB and the UPF network element to establish a PDU session shared by the first terminal and the second terminal, so that when any terminal accesses the network, if the SMF network element determines to communicate with the terminal.
  • the backup terminal has triggered the establishment of a PDU session, so there is no need to establish a PDU session again, and the PDU session established with the terminal that is the backup terminal can be shared, so that when the primary terminal fails, the secondary terminal can directly use the primary terminal for data transmission.
  • the PDU session shared with the standby terminal does not need to re-establish a new PDU session, which minimizes the impact of terminal equipment failure on the service continuity of the terminal equipment and improves the reliability of the terminal equipment.
  • the AMF network element sends pairing indication information to the gNB.
  • the gNB receives the pairing indication information from the AMF network element.
  • the pairing indication information is used to indicate that the first terminal and the second terminal are in a mutual backup relationship.
  • the AMF network element may send pairing indication information to the gNB for indicating that the first terminal and the second terminal are in a mutual backup relationship, wherein,
  • the pairing indication information carries the identification information of the first terminal and the second terminal, and the identification information is the identification information identifiable by the gNB, such as AMF UE NGAP ID or RAN UE NGAP ID, and the signaling for sending the pairing indication information can be the NG-AP signal.
  • command such as DOWNLINK NAS TRANSPORT or INITIAL CONTEXT SETUP REQUEST or UE CONTEXT MODIFICATION REQUEST.
  • the AMF network element may send pairing indication information to the gNB to indicate that the first terminal and the second terminal are in a mutual backup relationship, thereby realizing
  • the gNB authenticates the backup relationship between the first terminal and the second terminal, so that when the gNB determines that the first terminal is the primary terminal and the second terminal is the backup terminal, it can send a copy of downlink data to the first terminal and the second terminal , or can send downlink data to the first terminal and send downlink data to the second terminal when the first terminal fails, so that the first terminal as the primary terminal and the second terminal as the standby terminal can jointly perform data transmission with the gNB, and It only occupies a single or less spectrum resource, which not only avoids the situation that data transmission cannot be carried out due to the failure of the main terminal equipment, but also reduces the impact of terminal equipment failure on the business continuity of the terminal equipment as much as possible, and improves the performance of the terminal equipment.
  • the AMF network element can directly send the association indication information to the application layer of the opposite terminal of the terminal, or can also send the association indication information through the SMF network element or the UPF network element.
  • the network element sends association indication information to the application layer of the opposite end, which is not specifically limited in this embodiment of the present application.
  • the peer application layer receives the association indication information from the AMF network element or the SMF network element or the UPF network element.
  • the peer application layer of the terminal refers to the application layer corresponding to the destination Internet Protocol (IP) address of the uplink data sent by the terminal.
  • IP Internet Protocol
  • the gNB needs to send the uplink data to the
  • the association indication information is used to instruct the opposite end application layer to send downlink data to the first terminal and the second terminal when receiving the uplink data sent by the first terminal or the second terminal, and the association indication information carries the first terminal. and the IP address of the second terminal or the IP addresses of the first terminal and the second terminal, and the IP address of the application layer of the opposite terminal.
  • the AMF network element sends the association indication information to the application layer of the opposite end, which may be the AMF network element sending the association indication information to the application layer of the opposite end before sending the pairing indication information to the gNB, or the AMF network element may send the association indication information to the application layer of the opposite end.
  • the network element sends the pairing indication information to the gNB and then sends the association indication information to the opposite-end application layer, which is not specifically limited in this embodiment of the present application.
  • the AMF network element may send a message to the application layer of the opposite terminal to indicate that the application layer of the opposite terminal receives a message sent by the first terminal or the second terminal.
  • the associated indication information of downlink data is sent to the first terminal and the second terminal, so that when the application layer of the opposite terminal receives the uplink data sent by any terminal, it will send it to the terminal and the terminal that is in a backup relationship with the terminal.
  • Downlink data so when the terminal can only send uplink data after receiving downlink data, or when the peer application layer can send downlink data only after receiving uplink data, the standby terminal can also perform data transmission normally, so as to avoid the failure of the main terminal equipment. In the case of data transmission, the impact of the terminal equipment failure on the service continuity of the terminal equipment is reduced as much as possible, and the reliability of the terminal equipment is improved.
  • the gNB When determining that the first terminal is the master terminal and the second terminal is the standby terminal according to the pairing indication information, the gNB sends the first configuration information to the first terminal, and sends part or all of the first configuration information to the second terminal.
  • the first terminal receives the first configuration information from the gNB, and the second terminal receives part or all of the first configuration information from the gNB.
  • the first configuration information carries a group wireless network temporary identifier RNTI or a security key shared by the first terminal and the second terminal.
  • the gNB may determine the primary terminal and the backup terminal among the terminals in the mutual backup relationship, When it is determined that the first terminal is the master terminal and the second terminal is the standby terminal, the first configuration information may be sent to the first terminal, and part or all of the first configuration information may be sent to the second terminal, wherein the first configuration information carries The group radio network temporary identity (RNTI), security key, security algorithm or physical layer configuration, etc.
  • RNTI group radio network temporary identity
  • the group RNTI is used to enable the gNB to
  • the shared group RNTI sends a copy of downlink data to the first terminal and the second terminal
  • the security key can be a key generated by the gNB based on the identity of the first terminal and the identity of the second terminal, or a key generated by the gNB based on a random number , or the key generated by the gNB for the first terminal and the second terminal respectively, or the key generated by the core network device received by the gNB based on the identity of the first terminal and the identity of the second terminal, which are not specifically limited in this embodiment of the present application , because the first terminal and the second terminal can share part or all of the configuration, when the gNB sends data to the first terminal, the second terminal can also receive data from the gNB, and the second terminal as a backup terminal can not perform downlink Upstream feedback of data, and support for discontinuous delivery of data to the upper layer.
  • the gNB may send the security keys of the first terminal to the second terminal through a radio resource control (radio resource control, RRC) message. terminal, so that the second terminal can use the security key of the first terminal to parse the data sent by the gNB to the first terminal.
  • RRC radio resource control
  • the gNB can send the identification information of the first terminal, such as the cell-radio network temporary identifier (C-RNTI), to the second terminal, and the second terminal also saves the C-RNTI of the first terminal.
  • C-RNTI cell-radio network temporary identifier
  • the RNTI and the C-RNTI of the second terminal enable the second terminal to receive data sent by the gNB to the first terminal based on the C-RNTI of the first terminal.
  • the gNB when the gNB determines that the first terminal is the master terminal and the second terminal is the standby terminal, the gNB may send the first configuration information to the first terminal, and send part or all of the first configuration information to the second terminal, thereby
  • the first terminal and the second terminal can normally perform data transmission, and the gNB can send a copy of downlink data to the first terminal and the second terminal according to the group RNTI shared by the first terminal and the second terminal, so that the first terminal of the main terminal is the first terminal.
  • the second terminal and the second terminal as the standby terminal can jointly carry out data transmission with the gNB, and only occupy a single or less spectrum resource, which not only avoids the situation that the main terminal equipment fails and cannot carry out data transmission, but also reduces the number of terminals as much as possible.
  • the impact of equipment failure on the service continuity of terminal equipment improves the reliability of terminal equipment, and consumes less spectrum resources, which helps to alleviate the problem of shortage of spectrum resources.
  • the gNB sends the first state indication information to the second terminal.
  • the second terminal receives the first state indication information from the gNB.
  • the first state indication information is used to instruct the terminal to enter a non-working state, and the non-working state is a state in which the terminal does not send uplink data but receives downlink data, or a state in which the terminal does not transmit data, or a state in which the terminal does not transmit service data but Status of signaling transmission and medium access control control element (MAC CE) transmission.
  • MAC CE medium access control control element
  • the gNB sends the first configuration information to the first terminal, and after sending part or all of the first configuration information to the second terminal, the gNB may send to the second terminal a first state for instructing the terminal to enter a non-working state Indication information, wherein the non-working state is the state in which the terminal does not send uplink data but receives downlink data, or the state in which the terminal does not transmit data, or the state in which the terminal does not transmit service data but transmits signaling and MAC CE transmission, such as , when the terminal enters the non-working state, the terminal may not receive uplink and downlink service data but receive uplink and downlink signaling, as well as control information such as MAC CE, or the terminal may receive downlink data and give feedback, or receive downlink data without feedback, If feedback is performed, the gNB can determine, according to the feedback information, that a packet data convergence protocol (PDCP) service data unit (SDU) or a complete application layer data packet has been successfully sent to the first terminal and the For any terminal in
  • the gNB may send the first state indication information for indicating that the terminal enters the non-working state to the second terminal, so that the first terminal can normally perform data transmission, and the second terminal may not perform data transmission or the second terminal may not perform data transmission.
  • the gNB determines whether the first terminal is faulty, and if so, sends the first state indication information to the first terminal, and sends the second state indication information to the second terminal.
  • the first terminal receives the first state indication information from the gNB
  • the second terminal receives the second state indication information from the gNB.
  • the second state indication information is used to instruct the terminal to enter a working state
  • the working state is a state in which the terminal sends uplink data and receives downlink data.
  • the gNB after the gNB sends the first state indication information for indicating that the terminal enters the non-working state to the second terminal, it can determine whether the first terminal is faulty, and if so, send the first state indication information to the first terminal, Send the second state indication information for indicating that the terminal enters the working state to the second terminal, wherein the working state is the state in which the terminal sends uplink data and receives downlink data, and the second state indication information can be sent through DCI or MAC CE, or can be Sending through an RRC message, such as an RRC reconfiguration message, is not specifically limited in this embodiment of the present application.
  • the gNB after the gNB sends the first state indication information for indicating that the terminal enters the non-working state to the second terminal, it can also judge that there is a problem with the wireless link of the first terminal or that the wireless link of the first terminal is relatively poor. When it is poor, the first state indication information is sent to the first terminal, and the second state indication information used to instruct the terminal to enter the working state is sent to the second terminal, which is not specifically limited in this embodiment of the present application.
  • the gNB can acquire the fault detection information of the first terminal. If the gNB does not acquire the fault detection information within a preset period of time, it is determined that the first terminal is faulty or the radio link of the first terminal is faulty and the second terminal needs to take over. The gNB obtains the fault detection information within a preset period of time, and determines whether the first terminal is faulty according to the fault detection information of the first terminal.
  • the fault detection information may carry the uplink reference signal of the first terminal, and feed back at least one of NACK information (or no ACK information), uplink data and fault indication information, where the fault indication information is used to indicate whether the first terminal is faulty
  • the second terminal may judge whether the first terminal is faulty based on the heartbeat packet between the first terminal and the second terminal or the feedback NACK information from the gNB, and send fault indication information to the gNB, which is not specifically described in this embodiment of the application limited.
  • the gNB can perform uplink measurement based on the uplink reference signal of the first terminal, and if the measured value is lower than the preset threshold for a period of time, it can determine that the first terminal is faulty, or There is a problem with the radio link of the first terminal. If the fault detection information carries the feedback information of the first terminal, and if the base station does not receive the feedback information of the downlink data from the first terminal within a preset period, it can determine that the first terminal is faulty, or that the wireless link of the first terminal is faulty. There is a problem with the road.
  • the gNB when the gNB determines that the first terminal is faulty, it sends the first state indication information to the first terminal for instructing the terminal to enter the non-working state, and sends the second terminal to the second terminal for instructing the terminal to enter the working state.
  • Status indication information so that the second terminal of the standby terminal can replace the first terminal of the main terminal to perform data transmission with the gNB, to avoid the situation that the main terminal equipment can no longer transmit data due to the failure of the main terminal equipment, and to reduce the failure of the terminal equipment as much as possible.
  • the influence of the business continuity of the terminal equipment improves the reliability of the terminal equipment.
  • the AMF network element may send pairing indication information to the gNB for indicating that the first terminal and the second terminal are in a mutual backup relationship, so that the
  • the gNB determines that the first terminal is the master terminal and the second terminal is the backup terminal according to the pairing instruction information, it can send a copy of downlink data to the first terminal and the second terminal, so that the first terminal of the master terminal and the second terminal are the backup terminals.
  • the second terminal can jointly transmit data with the gNB, and only occupies a single or less spectrum resource, so as not only to avoid the situation that the main terminal equipment fails to perform data transmission, but also to minimize the impact of terminal equipment failure.
  • the influence of the service continuity of the terminal equipment improves the reliability of the terminal equipment, and consumes less spectrum resources, which helps to alleviate the problem of the shortage of spectrum resources.
  • FIG. 2 to FIG. 4 are described in detail below with reference to FIG. 6 of the specific embodiment.
  • the method flow includes the following steps:
  • the first terminal and the second terminal send registration request information to the AMF network element.
  • the AMF network element receives the registration request information from the first terminal and the second terminal.
  • the registration request information is used to request that the terminal be connected to the core network.
  • the AMF network element determines that the first terminal and the second terminal are in a mutual backup relationship.
  • the first terminal or the second terminal sends session establishment request information to the AMF network element.
  • the AMF network element receives the session establishment request information from the first terminal or the second terminal, and sends the session establishment request information to the SMF network element.
  • the session establishment request information is used to request the SMF network element to establish a PDU session shared by the first terminal and the second terminal.
  • the AMF network element sends pairing indication information to the gNB.
  • the gNB receives the pairing indication information from the AMF network element.
  • the pairing indication information is used to indicate that the first terminal and the second terminal are in a mutual backup relationship.
  • steps S601-S604 are the same as steps S501-S504 in the embodiment shown in FIG. 5 , and the related description may refer to the embodiment shown in FIG. 5 , which will not be repeated here.
  • the gNB When determining that the first terminal is the primary terminal and the second terminal is the standby terminal according to the pairing indication information, the gNB sends the second configuration information to the first terminal, and sends the third configuration information to the second terminal.
  • the first terminal receives the second configuration information from the gNB
  • the second terminal receives the third configuration information from the gNB.
  • the second configuration information carries the RNTI or the security key or the time-frequency resource of the first terminal
  • the third configuration information carries the RNTI or the security key or the time-frequency resource of the second terminal.
  • the gNB may determine the primary terminal and the backup terminal among the terminals in the mutual backup relationship, When it is determined that the first terminal is the main terminal and the second terminal is the standby terminal, the second configuration information may be sent to the first terminal, and the third configuration information may be sent to the second terminal, wherein the second configuration information carries the information of the first terminal. RNTI or security key or time-frequency resource, and the third configuration information carries the RNTI or security key or time-frequency resource of the second terminal.
  • the second terminal which is the standby terminal, can jointly transmit data with the gNB, and only occupies a single or less spectrum resource, which not only avoids the situation that the main terminal equipment fails and cannot perform data transmission, but also reduces the number of terminal equipment as much as possible.
  • the impact of the failure on the service continuity of the terminal equipment improves the reliability of the terminal equipment, and consumes less spectrum resources, which helps to alleviate the problem of the shortage of spectrum resources.
  • the gNB sends the first state indication information to the second terminal.
  • the second terminal receives the first state indication information from the gNB.
  • the first state indication information is used to instruct the terminal to enter a non-working state
  • the non-working state is a state in which the terminal does not perform data transmission, or a state in which the terminal does not perform service data transmission but performs signaling and MAC CE transmission.
  • the gNB sends the second configuration information to the first terminal, and after sending the third configuration information to the second terminal, may send to the second terminal first state indication information for instructing the terminal to enter a non-working state, wherein , the non-working state is the state in which the terminal does not perform data transmission, or the state in which the terminal does not perform service data transmission but performs signaling and MAC CE transmission.
  • the first state indication information may be included in DCI or MAC CE, or may be included in RRC In the message, this embodiment of the present application does not specifically limit this.
  • the gNB may send the first state indication information for indicating that the terminal enters the non-working state to the second terminal, so that the first terminal can normally perform data transmission, and the second terminal may not perform data transmission or service
  • the state of data transmission but signaling and MAC CE transmission further enables the gNB to send downlink data to the second terminal when the first terminal fails, so that the first terminal of the main terminal and the second terminal of the standby terminal can jointly Data transmission with gNB, and only occupies a single or less spectrum resource, not only avoids the situation that data transmission cannot be carried out due to the failure of the main terminal equipment, but also minimizes the impact of terminal equipment failure on the business continuity of the terminal equipment. This improves the reliability of terminal equipment, and consumes less spectrum resources, which helps to alleviate the problem of spectrum resource shortage.
  • the gNB determines whether the first terminal is faulty, and if yes, sends the first state indication information to the first terminal, and sends the second state indication information to the second terminal.
  • the first terminal receives the first state indication information from the gNB
  • the second terminal receives the second state indication information from the gNB.
  • the second state indication information is used to instruct the terminal to enter a working state
  • the working state is a state in which the terminal sends uplink data and receives downlink data.
  • the gNB after the gNB sends the first state indication information for indicating that the terminal enters the non-working state to the second terminal, it can determine whether the first terminal is faulty, and if so, send the first state indication information to the first terminal, Send the second state indication information for indicating that the terminal enters the working state to the second terminal, wherein the working state is the state in which the terminal sends uplink data and receives downlink data, and the second state indication information can be sent through DCI or MAC CE, or can be Sending through an RRC message, such as an RRC reconfiguration message, is not specifically limited in this embodiment of the present application.
  • the gNB after the gNB sends the first state indication information for indicating that the terminal enters the non-working state to the second terminal, it can also judge that there is a problem with the wireless link of the first terminal or that the wireless link of the first terminal is relatively poor. When it is poor, the first state indication information is sent to the first terminal, and the second state indication information used to instruct the terminal to enter the working state is sent to the second terminal, which is not specifically limited in this embodiment of the present application.
  • the gNB can acquire the fault detection information of the first terminal. If the gNB does not acquire the fault detection information within a preset period of time, it is determined that the first terminal is faulty or the radio link of the first terminal is faulty and the second terminal needs to take over. The gNB obtains the fault detection information within a preset period of time, and determines whether the first terminal is faulty according to the fault detection information of the first terminal.
  • the fault detection information may carry the uplink reference signal of the first terminal, and feed back at least one of NACK information (or no ACK information), uplink data and fault indication information, where the fault indication information is used to indicate whether the first terminal is faulty
  • the second terminal may judge whether the first terminal is faulty based on the heartbeat packet between the first terminal and the second terminal or the feedback NACK information from the gNB, and send fault indication information to the gNB, which is not specifically described in this embodiment of the application limited.
  • the gNB can perform uplink measurement based on the uplink reference signal of the first terminal, and if the measured value is lower than the preset threshold for a period of time, it can determine that the first terminal is faulty, or There is a problem with the radio link of the first terminal. If the fault detection information carries the feedback information of the first terminal, and if the base station does not receive the feedback information of the downlink data from the first terminal within a preset period, it can determine that the first terminal is faulty, or that the wireless link of the first terminal is faulty. There is a problem with the road.
  • the gNB when the gNB determines that the first terminal is faulty, it sends the first state indication information to the first terminal for instructing the terminal to enter the non-working state, and sends the second terminal to the second terminal for instructing the terminal to enter the working state.
  • the gNB can send downlink data to the second terminal when the first terminal fails, so that the second terminal that is the standby terminal can replace the first terminal of the main terminal to perform data transmission with the gNB, and only occupies a single time or Less spectrum resources not only avoids the situation that data transmission cannot be carried out due to the failure of the main terminal equipment, but also minimizes the impact of terminal equipment failure on the business continuity of the terminal equipment, improves the reliability of the terminal equipment, and consumes more power. less spectrum resources, which helps to alleviate the problem of tight spectrum resources.
  • the AMF network element may send pairing indication information to the gNB for indicating that the first terminal and the second terminal are in a mutual backup relationship, so that the When the gNB determines that the first terminal is the master terminal and the second terminal is the backup terminal according to the pairing instruction information, it can send downlink data to the first terminal and send downlink data to the second terminal when the first terminal fails, so that the master terminal is the master terminal.
  • the first terminal and the second terminal serving as the standby terminal can jointly perform data transmission with the gNB, and only occupy a single or less frequency spectrum resource, thus not only avoiding the situation that the main terminal equipment fails and cannot carry out data transmission, but also It may reduce the impact of the terminal equipment failure on the service continuity of the terminal equipment, improve the reliability of the terminal equipment, and consume less spectrum resources, which helps to alleviate the problem of the shortage of spectrum resources.
  • each core network device and base station may perform some or all of the steps in the embodiments of the present application, these steps are only examples, and the embodiments of the present application may also perform other steps or variations of various steps. In addition, various steps may be performed in different orders presented in the embodiments of the present application, and it may not be necessary to perform all the steps in the embodiments of the present application.
  • the foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between various network elements and between each core network device and the base station.
  • the above-mentioned first core network device or base station includes corresponding hardware structures and/or software modules for executing each function.
  • the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
  • the first core network device or the base station may be divided into functional modules according to the foregoing method examples.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. middle.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.
  • FIG. 7 shows a schematic structural diagram of a first core network device applicable in the embodiment of the present application.
  • the first core network device 700 may include: a processing unit 701 and a sending unit 702 .
  • the processing unit 701 is used to control and manage the actions of the first core network device 700 and support the communication between the first core network device 700 and other network entities.
  • the processing unit 701 is used to support the first core network device 700 to execute the Processes S501, S502, S504 in 5, and/or other processes for the techniques described herein.
  • the sending unit 702 is configured to support the communication between the first core network device 700 and other network entities, for example, the communication with the first core network device and/or the base station shown in FIG. 5 .
  • the first core network device 700 may further include a storage unit 703 for storing program codes and/or data of the first core network device 700 .
  • a storage unit 703 for storing program codes and/or data of the first core network device 700 .
  • a processing unit 701 configured to determine that the first terminal and the second terminal are in a mutual backup relationship
  • the sending unit 702 is configured to send pairing indication information to the base station, where the pairing indication information is used to indicate that the first terminal and the second terminal are in a mutual backup relationship, so that the base station is in a mutual backup relationship according to the pairing indication information.
  • the pairing indication information is used to indicate that the first terminal and the second terminal are in a mutual backup relationship, so that the base station is in a mutual backup relationship according to the pairing indication information.
  • the processing unit 701 may be specifically configured to: receive a registration request message sent by the first terminal and the second terminal, where the registration request message is used to request that the terminal be connected to the core network; After receiving the registration request information sent by the first terminal or the second terminal, obtain the identification information of the second terminal or the first terminal from the second core network device, according to the second terminal or the The identification information of the first terminal determines that the first terminal and the second terminal are in a mutual backup relationship; or, after receiving the registration request information sent by the first terminal or the second terminal, from the first terminal or the second terminal.
  • the identification information of the second terminal or the first terminal is obtained from the registration request information sent by the terminal or the second terminal, and the identification information of the first terminal or the second terminal is determined according to the identification information of the second terminal or the second terminal.
  • the second terminal is in a mutual backup relationship; or, after receiving the registration request information sent by the first terminal or the second terminal, the identification information of the terminals in the mutual backup relationship is obtained from the application function AF network element, according to the The identification information of the terminals in a mutual backup relationship determines that the first terminal and the second terminal are in a mutual backup relationship.
  • the processing unit 701 may be further configured to receive the session establishment request information sent by the first terminal or the second terminal, and send the session establishment request information to the third core network device,
  • the session establishment request information is used to request the base station and the fourth core network device to establish a protocol data unit PDU session shared by the first terminal and the second terminal.
  • the sending unit 702 may be further configured to send association indication information to the opposite end application layer of the terminal, where the association indication information is used to indicate that the opposite end application layer receives the first terminal Or send downlink data to the first terminal and the second terminal when the uplink data is sent by the second terminal, and the association indication information carries the Internet Protocol of the first terminal and the second terminal.
  • each module in the first core network device 700 is respectively in order to implement the corresponding processes of the method for data transmission by dual terminal devices shown in FIG. 5 to FIG. .
  • FIG. 8 shows a schematic structural diagram of another first core network device applicable in the embodiment of the present application.
  • the first core network 800 may include at least one processor 801 and a memory 802 .
  • the memory 802 stores one or more computer programs, for example, one or more computer programs necessary for the first core network 800 .
  • the processor 801 is configured to support the first core network 800 to implement the above-mentioned method for data transmission by dual terminal devices. For example, when one or more computer programs stored in the memory 802 are executed by the at least one processor 801, This enables the first core network 800 to implement any possibility of the embodiments of the method for data transmission by dual terminal devices shown in FIG. 5 to FIG. 6 , and/or to implement other embodiments described herein.
  • the embodiments of the present application further provide a first core network device, where the first core network device includes a method embodiment for performing the foregoing dual-terminal device for data transmission, or an embodiment of the method embodiment.
  • FIG. 9 shows a schematic structural diagram of a base station applicable to the embodiment of the present application.
  • the base station 900 may include: a receiving unit 901 , a sending unit 902 and a processing unit 903 .
  • the processing unit 903 is used to control and manage the actions of the base station 900, for example, the processing unit 903 is used to support the base station 900 to perform the process S507 in FIG. 5, and/or other processes for the techniques described herein.
  • the receiving unit 901 and the sending unit 902 are used to support the communication between the base station 900 and other network entities, for example, the communication with the first core network device and/or the application layer shown in FIG. 5 .
  • the base station 900 may further include a storage unit 904 for storing program codes and/or data of the base station 900 .
  • a storage unit 904 for storing program codes and/or data of the base station 900 .
  • a receiving unit 901 configured to receive pairing indication information sent by a first core network device, where the pairing indication information is used to indicate that the first terminal and the second terminal are in a mutual backup relationship;
  • the sending unit 902 is configured to send a copy of downlink data to the first terminal and the second terminal when it is determined according to the pairing indication information that the first terminal is the master terminal and the second terminal is the standby terminal , or send downlink data to the first terminal and send downlink data to the second terminal when the first terminal fails.
  • the receiving unit 901 may be further configured to receive session establishment indication information sent by a third core network device, where the session establishment indication information is used to instruct the base station to establish the a protocol data unit PDU session shared by the first terminal and the second terminal; according to the session establishment indication information, establish a PDU session shared by the first terminal and the second terminal with the fourth core network device.
  • the sending unit 902 when sending a copy of downlink data to the first terminal and the second terminal, is specifically configured to: send the first configuration information to the first terminal, and send the first configuration information to the first terminal.
  • the second terminal sends part or all of the first configuration information, where the first configuration information carries a group wireless network temporary identifier RNTI or a security key shared by the first terminal and the second terminal.
  • the security key may be any one or more of the following situations: the base station is based on the identifier of the first terminal and the second terminal The key generated by the identifier of the base station; or the key generated by the base station based on a random number; or the key generated by the base station for the first terminal and the second terminal; or the key received by the base station The key generated by the network device based on the identity of the first terminal and the identity of the second terminal.
  • the sending unit 902 may be further configured to send first state indication information to the second terminal, where the first state indication information is used to instruct the terminal to enter a non-working state, and the non-working state It is a state in which the terminal does not send uplink data but receives downlink data, or a state in which the terminal does not transmit data, or a state in which the terminal does not transmit service data but transmits signaling.
  • the processing unit 903 may be configured to determine whether the first terminal is faulty, and if so, send the first state indication information to the first terminal, and send the first state indication information to the second terminal Two state indication information, the second state indication information is used to instruct the terminal to enter a working state, and the working state is a state in which the terminal sends uplink data and receives downlink data.
  • the processing unit 903 when determining whether the first terminal is faulty, is specifically configured to: acquire fault detection information of the first terminal, where the fault detection information carries the uplink of the first terminal at least one of a reference signal, feedback NACK information, uplink data, and fault indication information, where the fault indication information is used to indicate whether the first terminal is faulty; if the fault detection information is not obtained within a preset time period, Then, it is determined that the first terminal is faulty; if the fault detection information is acquired within a preset time period, it is determined whether the first terminal is faulty according to the fault detection information.
  • each module in the base station 900 is respectively to implement the corresponding processes of the data transmission method for dual terminal devices shown in FIG. 5 to FIG.
  • FIG. 10 shows a schematic structural diagram of another base station applicable to the embodiment of the present application.
  • the base station 1000 may include at least one processor 1001 and a memory 1002 .
  • the memory 1002 stores one or more computer programs, for example, one or more computer programs necessary for the base station 1000 .
  • the processor 1001 is configured to support the base station 1000 to implement the above method for data transmission by dual terminal devices. For example, when one or more computer programs stored in the memory 1002 are executed by the at least one processor 801, the The base station 1000 may implement any possibility of the embodiments of the method for data transmission by dual terminal devices shown in FIG. 5 to FIG. 6 , and/or be used to implement other embodiments described herein.
  • the embodiments of the present application further provide a base station, where the base station includes the foregoing method embodiments for performing data transmission by dual-terminal devices, or any possible implementation manner of the method embodiments.
  • module/unit These modules/units can be implemented by hardware or by executing corresponding software by hardware.
  • the embodiments of the present application further provide a computer-readable storage medium on which a computer program is stored.
  • the computer program When the computer program is run on a computer, the computer executes the above-mentioned dual-terminal device to perform data processing.
  • the transmission method embodiment and any possible implementation manner of the method embodiment for example, executing any step of the embodiment of the method for data transmission by dual terminal equipment shown in FIG. 5-FIG. 6 , and/or executing the description herein other processes of the technology.
  • the embodiments of the present application also provide a program product, when the program product runs on a computer, the computer is made to execute the above method embodiments and method implementations for data transmission by dual terminal devices Any possible implementation of the example, such as executing any steps of the embodiments of the method for data transmission by dual terminal devices shown in FIGS. 5-6 , and/or executing other processes of the techniques described herein.
  • the embodiments of the present application further provide a chip, which can be coupled with the first core network device or the memory in the base station, and is used to call the computer program stored in the memory and execute the above-mentioned dual terminal
  • a chip which can be coupled with the first core network device or the memory in the base station, and is used to call the computer program stored in the memory and execute the above-mentioned dual terminal
  • a method embodiment for a device to perform data transmission and any possible implementation manner of the method embodiment, for example, executing any step of the embodiment of the method for data transmission by a dual-terminal device shown in FIG. 5 to FIG. 6 , and/or executing Other procedures for the techniques described herein.
  • processor or processing unit in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiment for data transmission by a dual-terminal device may be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the above-mentioned processor can be a general-purpose central processing unit (central processing unit, CPU), a general-purpose processor, a digital signal processing (digital signal processing, DSP), an application specific integrated circuit (application specific integrated circuits, ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof; it may also be a combination that implements computing functions, such as a combination of one or more microprocessors, DSP and microprocessor combination of devices, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory or storage unit in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • a general-purpose processor may be a microprocessor, or alternatively, the general-purpose processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a digital signal processor core, or any other similar configuration. accomplish.
  • the steps of the method or algorithm described in the embodiments of this application may be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
  • the software unit may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium may be coupled to the processor such that the processor may read information from, and store information in, the storage medium.
  • the storage medium can also be integrated into the processor.
  • the processor and the storage medium may be provided in an ASIC, and the ASIC may be provided in a communication device (eg, a first core network device, a base station, etc.), for example, may be provided in different components in the communication device.
  • the computer program product includes one or more computer programs or instructions.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer program or instructions may be stored in or transmitted over a computer-readable storage medium.
  • the computer-readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server that integrates one or more available media.
  • the usable media can be magnetic media, such as floppy disks, hard disks, magnetic tapes; optical media, such as DVD; and semiconductor media, such as solid state disks (SSD).
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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Abstract

本申请公开了一种双终端设备进行数据传输的方法及装置，可以只占用单倍或者较少的频谱资源，消耗的频谱资源较少，有助于缓解频谱资源紧张。该方法包括：第一核心网设备确定第一终端与第二终端是互为备份关系，第一核心网设备向基站发送配对指示信息，所述配对指示信息用于指示所述第一终端与所述第二终端是互为备份关系，以使所述基站在根据所述配对指示信息确定所述第一终端为主终端和所述第二终端为备终端时，向所述第一终端和所述第二终端发送一份下行数据，或者向所述第一终端发送下行数据并在所述第一终端故障时向所述第二终端发送下行数据。

Description

一种双终端设备进行数据传输的方法及装置 技术领域
本申请涉及通信技术领域，尤其涉及一种双终端设备进行数据传输的方法及装置。
背景技术
企业对企业(business-to-business，B2B)业务是指企业与企业之间通过专用网络或Internet，进行数据信息的交换、传递，开展交易活动的业务，由于B2B业务对端到端时延和可靠性非常敏感，且企业的可用频谱资源较少，所以企业的可用频谱资源非常珍贵。B2B业务类型大致可分为三类：远程控制(remote Control，RC)、控制对控制(control to control，C2C)、移动控制(motion control，MC)，其中MC业务要求端到端时延小于等于1ms，可靠性6个9，可靠性6个9可以理解为一年中允许通信服务中断的总故障时间约为30秒。而现有的终端设备的可靠性仅为3或4个9，因此为了保证MC业务的可靠性，需要提高终端设备的可靠性。
现有技术中为了提高终端设备的可靠性并尽可能减小对终端设备的业务连续性的影响，提出了利用双终端设备进行数据传输的概念，即利用一个主终端设备和一个备终端设备共同进行数据传输,避免出现主终端设备故障就不能再进行数据传输的情况。图1所示为现有的双终端设备进行数据传输的原理示意图，终端设备通过建立终端设备到无线接入网(radio access network，RAN)到用户面功能(user plane function，UPF)网元之间的协议数据单元(protocol data unit，PDU)会话访问数据网络(data network，DN),其中主终端设备和备终端设备连接不同的RAN和UPF网元。
由此可知，现有的双终端设备进行数据传输时，主终端设备和备终端设备需连接不同的RAN和UPF网元，建立不同的终端设备到RAN到UPF网元之间的PDU会话，从而占用双倍的频谱资源，存在频谱资源消耗较多的问题。
发明内容
本申请实施例提供一种双终端设备进行数据传输的方法及装置，以解决现有的双终端设备进行数据传输时，存在频谱资源消耗较多的问题。
第一方面，本申请提供一种双终端设备进行数据传输的方法，该方法包括：第一核心网设备确定第一终端与第二终端是互为备份关系；第一核心网设备向基站发送配对指示信息，所述配对指示信息用于指示所述第一终端与所述第二终端是互为备份关系，以使所述基站在根据所述配对指示信息确定所述第一终端为主终端和所述第二终端为备终端时，向所述第一终端和所述第二终端发送一份下行数据，或者向所述第一终端发送下行数据并在所述第一终端故障时向所述第二终端发送下行数据。
采用上述设计，第一核心网设备确定第一终端与第二终端是互为备份关系后，可以向基站发送用于指示第一终端与第二终端是互为备份关系的配对指示信息，以使基站在根据该配对指示信息确定第一终端为主终端和第二终端为备终端时，可以向第一终端和第二终端发送一份下行数据，或者可以向第一终端发送下行数据并在第一终端故障时向第二终端 发送下行数据，使得为主终端的第一终端和为备终端的第二终端可以共同与基站进行数据传输，且只占用单倍或者较少的频谱资源，从而不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
在一种可能的设计中，所述第一核心网设备确定第一终端与第二终端是互为备份关系，包括：所述第一核心网设备接收所述第一终端和所述第二终端发送的注册请求消息，所述注册请求消息用于请求将终端接入核心网；所述第一核心网设备接收所述第一终端或所述第二终端发送的注册请求信息后，从第二核心网设备获取所述第二终端或所述第一终端的标识信息，根据所述第二终端或所述第一终端的标识信息确定所述第一终端与所述第二终端是互为备份关系；或者，所述第一核心网设备接收所述第一终端或所述第二终端发送的注册请求信息后，从所述第一终端或所述第二终端发送的注册请求信息获取所述第二终端或所述第一终端的标识信息，根据所述第二终端或所述第二终端的标识信息确定所述第一终端与所述第二终端是互为备份关系；或者，所述第一核心网设备接收所述第一终端或所述第二终端发送的注册请求信息后，从应用功能AF网元获取互为备份关系的终端的标识信息，根据所述互为备份关系的终端的标识信息确定所述第一终端与所述第二终端是互为备份关系。
采用上述设计，第一核心网设备接收第一终端或第二终端的注册请求信息后，确定第一终端与第二终端是互为备份关系，从而实现第一核心网设备对第一终端与第二终端的备份关系的鉴权，进一步的可以实现基站对第一终端与第二终端的备份关系的鉴权，以使基站在确定第一终端为主终端和第二终端为备终端时，可以向第一终端和第二终端发送一份下行数据，或者可以向第一终端发送下行数据并在第一终端故障时向第二终端发送下行数据，使得为主终端的第一终端和为备终端的第二终端可以共同与基站进行数据传输，且只占用单倍或者较少的频谱资源，从而不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
在一种可能的设计中，所述方法还包括：所述第一核心网设备接收所述第一终端或所述第二终端发送的注册请求信息后，接收所述第一终端或所述第二终端发送的会话建立请求信息，并向第三核心网设备发送所述会话建立请求信息，所述会话建立请求信息用于请求所述基站与第四核心网设备建立所述第一终端和所述第二终端共享的协议数据单元PDU会话。
采用上述设计，第一核心网设备接收第一终端或第二终端的注册请求信息后，可以接收第一终端或第二终端的会话建立请求信息，并向第三核心网设备发送会话建立请求信息，以使基站与第四核心网设备建立第一终端和第二终端共享的PDU会话，从而当任一终端接入网络时，若SMF网元确定与该终端互为备份的终端已触发建立PDU会话，可以不需要再次建立PDU会话，共享与该终端互为备份的终端建立的PDU会话即可，使得当主终端故障，备终端进行数据传输时可以直接使用主终端和备终端共享的PDU会话，不需要再重新建立新的PDU会话，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性。
在一种可能的设计中，所述方法还包括：所述第一核心网设备确定所述第一终端与所述第二终端是互为备份关系后，向终端的对端应用层发送关联指示信息，所述关联指示信 息用于指示所述对端应用层在接收到所述第一终端或所述第二终端发送的上行数据时向所述第一终端和所述第二终端发送下行数据，所述关联指示信息中携带所述第一终端和所述第二终端的网际互连协议IP地址或所述第一终端和所述第二终端的IP地址以及所述对端应用层的IP地址。
采用上述设计，第一核心网设备确定第一终端与第二终端是互为备份关系后，可以向终端的对端应用层发送用于指示对端应用层在接收到第一终端或第二终端发送的上行数据时向第一终端和第二终端发送下行数据的关联指示信息，使得对端应用层收到任一终端发送的上行数据时都会向该终端和与该终端是互为备份关系的终端发送下行数据，从而当终端只有收到下行数据才能发送上行数据或者对端应用层只有收到上行数据才能发送下行数据时，备终端也可以正常进行数据传输，避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性。
第二方面，本申请还提供一种双终端设备进行数据传输的方法，该方法包括：基站接收第一核心网设备发送的配对指示信息，所述配对指示信息用于指示第一终端与第二终端是互为备份关系；所述基站在根据所述配对指示信息确定所述第一终端为主终端和所述第二终端为备终端时，向所述第一终端和所述第二终端发送一份下行数据，或者向所述第一终端发送下行数据并在所述第一终端故障时向所述第二终端发送下行数据。
采用上述设计，基站接收第一核心网设备发送的配对指示信息，在根据该配对指示信息确定第一终端为主终端和第二终端为备终端时，可以向第一终端和第二终端发送一份下行数据，或者可以向第一终端发送下行数据并在第一终端故障时向第二终端发送下行数据，使得为主终端的第一终端和为备终端的第二终端可以共同与基站进行数据传输，且只占用单倍或者较少的频谱资源，从而不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
在一种可能的设计中，所述方法还包括：所述基站接收第三核心网设备发送的会话建立指示信息，所述会话建立指示信息用于指示所述基站与第四核心网设备建立所述第一终端和所述第二终端共享的协议数据单元PDU会话；所述基站根据所述会话建立指示信息，与所述第四核心网设备建立所述第一终端和所述第二终端共享的PDU会话。
采用上述设计，基站接收第三核心网设备发送的指示基站与第四核心网设备建立第一终端和第二终端共享的协议数据单元PDU会话的会话建立指示信息，根据会话建立指示信息，与第四核心网设备建立第一终端和第二终端共享的PDU会话，从而当任一终端接入网络时，若SMF网元确定与该终端互为备份的终端已触发建立PDU会话，可以不需要再次建立PDU会话，共享与该终端互为备份的终端建立的PDU会话即可，使得当主终端故障，备终端进行数据传输时可以直接使用主终端和备终端共享的PDU会话，不需要再重新建立新的PDU会话，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性。
在一种可能的设计中，所述基站向所述第一终端和所述第二终端发送一份下行数据，包括：所述基站向所述第一终端发送所述第一配置信息，向所述第二终端发送所述第一配置信息的部分或全部，所述第一配置信息中携带所述第一终端和所述第二终端共享的组无线网络临时标识RNTI或安全密钥。
在一种可能的设计中，所述安全密钥为下述情况中的任意一种或多种：所述基站基于所述第一终端的标识和所述第二终端的标识生成的密钥；或者，所述基站基于随机数生成的密钥；或者，所述基站为所述第一终端和所述第二终端生成的密钥；或者，所述安全密钥为所述基站接收的核心网设备基于所述第一终端的标识和所述第二终端的标识生成的密钥。
采用上述设计，基站可以向第一终端发送第一配置信息，向第二终端发送第一配置信息的部分或全部，从而第一终端和第二终端可以正常进行数据传输，且基站可以根据第一终端和第二终端共享的组RNTI向第一终端和第二终端发送一份下行数据，使得为主终端的第一终端和为备终端的第二终端可以共同与gNB进行数据传输，且只占用单倍或者较少的频谱资源，不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
在一种可能的设计中，所述方法还包括：所述基站向所述第二终端发送第一状态指示信息，所述第一状态指示信息用于指示终端进入非工作状态，所述非工作状态为终端不发送上行数据但接收下行数据的状态、或终端不进行数据传输的状态、或终端不进行业务数据传输但进行信令传输的状态。
采用上述设计，基站可以向第二终端发送用于指示终端进入非工作状态的第一状态指示信息，使得第一终端可以正常进行数据传输，第二终端可以不进行数据传输或者第二终端不发送上行数据但和第一终端一起接收基站发送的一份下行数据或者第二终端不进行业务数据传输但进行信令传输，从而为主终端的第一终端和为备终端的第二终端可以共同与基站进行数据传输，且只占用单倍或者较少的频谱资源，从而不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
在一种可能的设计中，所述方法还包括：所述基站判断所述第一终端是否故障，若是，则向所述第一终端发送所述第一状态指示信息，向所述第二终端发送第二状态指示信息，所述第二状态指示信息用于指示终端进入工作状态，所述工作状态为终端发送上行数据且接收下行数据的状态。
在一种可能的设计中，所述基站判断所述第一终端是否故障，包括：所述基站获取所述第一终端的故障检测信息，所述故障检测信息中携带所述第一终端的上行参考信号、反馈NACK信息、上行数据和故障指示信息中的至少一种，所述故障指示信息用于指示所述第一终端是否故障；若在预设时段内未获取到所述故障检测信息，则确定所述第一终端故障；若在预设时段内获取到所述故障检测信息，则根据所述故障检测信息确定所述第一终端是否故障。
采用上述设计，基站在确定第一终端故障时，向第一终端发送用于指示终端进入非工作状态的第一状态指示信息，向第二终端发送用于指示终端进入工作状态的第二状态指示信息，使得为备终端的第二终端可以替代为主终端的第一终端与gNB进行数据传输，避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性。
第三方面，本申请还提供一种第一核心网设备，所述第一核心网设备具有实现上述第 一方面或者第一方面的任一种可能的设计中方法的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块，比如包括处理单元、发送单元。
在一种可能的设计中，所述处理单元，用于确定第一终端与第二终端是互为备份关系；
在一种可能的设计中，所述发送单元，用于向基站发送配对指示信息，所述配对指示信息用于指示所述第一终端与所述第二终端是互为备份关系，以使所述基站在根据所述配对指示信息确定所述第一终端为主终端和所述第二终端为备终端时，向所述第一终端和所述第二终端发送一份下行数据，或者向所述第一终端发送下行数据并在所述第一终端故障时向所述第二终端发送下行数据。
在一种可能的设计中，所述处理单元，可以具体用于：接收所述第一终端和所述第二终端发送的注册请求消息，所述注册请求消息用于请求将终端接入核心网；接收所述第一终端或所述第二终端发送的注册请求信息后，从第二核心网设备获取所述第二终端或所述第一终端的标识信息，根据所述第二终端或所述第一终端的标识信息确定所述第一终端与所述第二终端是互为备份关系；或者，接收所述第一终端或所述第二终端发送的注册请求信息后，从所述第一终端或所述第二终端发送的注册请求信息获取所述第二终端或所述第一终端的标识信息，根据所述第二终端或所述第二终端的标识信息确定所述第一终端与所述第二终端是互为备份关系；或者，接收所述第一终端或所述第二终端发送的注册请求信息后，从应用功能AF网元获取互为备份关系的终端的标识信息，根据所述互为备份关系的终端的标识信息确定所述第一终端与所述第二终端是互为备份关系。
在一种可能的设计中，所述处理单元，还可以用于接收所述第一终端或所述第二终端发送的会话建立请求信息，并向第三核心网设备发送所述会话建立请求信息，所述会话建立请求信息用于请求基站与第四核心网设备建立所述第一终端和所述第二终端共享的协议数据单元PDU会话。
在一种可能的设计中，发送单元，还可以用于向终端的对端应用层发送关联指示信息，所述关联指示信息用于指示所述对端应用层在接收到所述第一终端或所述第二终端发送的上行数据时向所述第一终端和所述第二终端发送下行数据，所述关联指示信息中携带所述第一终端和所述第二终端的网际互连协议IP地址或所述第一终端和所述第二终端的IP地址以及所述对端应用层的IP地址。
在一个可能的设计中，所述第一核心网设备可以是芯片或者集成电路。
在一个可能的设计中，所述第一核心网设备可以包括：至少一个处理器和存储器；所述存储器存储一个或多个计算机程序；当所述存储器存储的一个或多个计算机程序被所述至少一个处理器执行时，使得所述第一核心网设备执行上述第一方面或上述第一方面的任意一种可能的设计的方法。
第四方面，本申请还提供一种计算机可读存储介质，所述计算机可读存储介质包括计算机程序，当计算机程序在计算机上运行时，使得所述计算机执行上述第一方面或上述第一方面的任意一种可能的设计的方法。
第五方面，本申请还提供一种程序产品，当所述程序产品在计算机上运行时，使得所述计算机执行上述第一方面或上述第一方面的任意一种可能的设计的方法。
第六方面，本申请还提供一种芯片，所述芯片可以与第一核心网设备的存储器耦合，用于调用存储器中存储的计算机程序并执行上述第一方面及其任意一种可能的设计的方 法。
上述第三方面至第六方面及其可能的设计中的有益效果可以参考上述对第一方面及其任意一种可能的设计中方法的有益效果的描述。
第七方面，本申请还提供一种基站，所述基站具有实现上述第二方面或者第二方面的任一种可能的设计中方法的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块，比如包括接收单元、发送单元和处理单元。
在一种可能的设计中，所述接收单元，用于接收第一核心网设备发送的配对指示信息，所述配对指示信息用于指示第一终端与第二终端是互为备份关系；
在一种可能的设计中，所述发送单元，用于在根据所述配对指示信息确定所述第一终端为主终端和所述第二终端为备终端时，向所述第一终端和所述第二终端发送一份下行数据，或者向所述第一终端发送下行数据并在所述第一终端故障时向所述第二终端发送下行数据。
在一种可能的设计中，所述接收单元，还可以用于接收第三核心网设备发送的会话建立指示信息，所述会话建立指示信息用于指示所述基站与第四核心网设备建立所述第一终端和所述第二终端共享的协议数据单元PDU会话；根据所述会话建立指示信息，与所述第四核心网设备建立所述第一终端和所述第二终端共享的PDU会话。
在一种可能的设计中，所述发送单元在向所述第一终端和所述第二终端发送一份下行数据时，具体用于：向所述第一终端发送所述第一配置信息，向所述第二终端发送所述第一配置信息的部分或全部，所述第一配置信息中携带所述第一终端和所述第二终端共享的组无线网络临时标识RNTI或安全密钥。
在一种可能的设计中，所述安全密钥为下述情况中的任意一种或多种：所述基站基于所述第一终端的标识和所述第二终端的标识生成的密钥；或者，所述基站基于随机数生成的密钥；或者，所述基站为所述第一终端和所述第二终端生成的密钥；或者，所述基站接收的核心网设备基于所述第一终端的标识和所述第二终端的标识生成的密钥。
在一种可能的设计中，所述发送单元，还可以用于向所述第二终端发送第一状态指示信息，所述第一状态指示信息用于指示终端进入非工作状态，所述非工作状态为终端不发送上行数据但接收下行数据的状态、或终端不进行数据传输的状态、或终端不进行业务数据传输但进行信令传输的状态。
在一种可能的设计中，所述处理单元，可以用于判断所述第一终端是否故障，若是，则向所述第一终端发送所述第一状态指示信息，向所述第二终端发送第二状态指示信息，所述第二状态指示信息用于指示终端进入工作状态，所述工作状态为终端发送上行数据且接收下行数据的状态。
在一种可能的设计中，所述处理单元判断所述第一终端是否故障时，具体用于：获取所述第一终端的故障检测信息，所述故障检测信息中携带所述第一终端的上行参考信号、反馈NACK信息、上行数据和故障指示信息中的至少一种，所述故障指示信息用于指示所述第一终端是否故障；若在预设时段内未获取到所述故障检测信息，则确定所述第一终端故障；若在预设时段内获取到所述故障检测信息，则根据所述故障检测信息确定所述第一终端是否故障。
在一个可能的设计中，所述基站可以是芯片或者集成电路。
在一个可能的设计中，所述基站可以包括：至少一个处理器和存储器；所述存储器存储一个或多个计算机程序；当所述存储器存储的一个或多个计算机程序被所述至少一个处理器执行时，使得所述基站执行上述第二方面或上述第二方面的任意一种可能的设计的方法。
第八方面，本申请还提供一种计算机可读存储介质，所述计算机可读存储介质包括计算机程序，当计算机程序在计算机上运行时，使得所述计算机执行上述第二方面或上述第二方面的任意一种可能的设计的方法。
第九方面，本申请还提供一种程序产品，当所述程序产品在计算机上运行时，使得所述计算机执行上述第二方面或上述第二方面的任意一种可能的设计的方法。
第十方面，本申请还提供一种芯片，所述芯片可以与终端中的存储器耦合，用于调用存储器中存储的计算机程序并执行上述第二方面及其任意一种可能设计的方法。
上述第七方面至第十方面及其可能的设计中的有益效果可以参考上述对第二方面及其任意一种可能的设计中所述方法的有益效果的描述。
第十一方面，本申请还提供一种双终端设备进行数据传输的系统，所述双终端设备进行数据传输的系统包括第一核心网设备单元和基站。所述第一核心网设备用于执行上述第一方面中，或者本申请实施例提供的方案中由所述第一核心网设备执行的步骤；所述基站用于执行上述第二方面中，或者本申请实施例提供的方案中由所述基站执行的步骤。
在一种可能的设计中，所述双终端设备进行数据传输的系统还可以包括本申请实施例提供的方案中与所述第一核心网设备或所述基站进行交互的其他设备，例如第一核心网设备、第二核心网设备、第三核心网设备、第四核心网设备、应用功能AF网元、第一终端、第二终端等，本申请实施例对此不作具体限定。
附图说明
图1为现有的双终端设备进行数据传输的原理示意图；
图2为本申请实施例适用的一种双终端设备进行数据传输的系统的架构示意图；
图3为本申请实施例适用的另一种双终端设备进行数据传输的系统的架构示意图；
图4为本申请实施例适用的另一种双终端设备进行数据传输的5G系统的架构示意图；
图5为本申请实施例提供的一种双终端设备进行数据传输的方法的流程示意图；
图6为本申请实施例提供的另一种双终端设备进行数据传输的方法的流程示意图；
图7为本申请实施例适用的一种第一核心网设备的结构示意图；
图8为本申请实施例适用的另一种第一核心网设备的结构示意图；
图9为本申请实施例适用的一种基站的结构示意图；
图10为本申请实施例适用的另一种基站的结构示意图。
具体实施方式
为了使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施例作进一步地详细描述。
如图2所示，为本申请实施例适用的一种双终端设备进行数据传输的系统的架构示意 图。其中，双终端设备进行数据传输的系统200可包括第一核心网设备201以及接入网设备202。
应理解，本申请实施例提供的双终端设备进行数据传输的系统200，既可适用于低频场景，也适用于高频场景。本申请实施例提供的双终端设备进行数据传输的系统200的应用场景包括但不限于全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WIMAX)通信系统、未来的第五代(5th generation，5G)系统或新无线(new radio，NR)通信系统等。
应理解，本申请实施例中，第一核心网设备201和接入网设备202之间可以直接通信，也可以通过其他设备的转发进行通信，本申请实施例对此不做具体限定。其中：
在本申请实施例中，第一核心网设备201可以包括但不限于移动管理网元。当上述第一核心网设备201为移动管理网元时，除了具备上述功能，还可以用于移动网络中的移动管理，如用户位置更新、用户注册网络、用户切换等。在第五代(5th generation，5G)通信系统中，移动管理网元所对应的网元或者实体可以为5G网络架构中的接入与移动管理功能(access and mobility management function，AMF)网元，Namf是AMF网元提供的基于服务的接口，AMF网元可以通过Namf与其他的网络功能通信，在未来通信如第六代通信(the 6th generation，6G)系统中，移动管理网元仍可以是AMF网元，或者移动管理网元有其它名称，本申请实施例对此不作限定。
在本申请实施例中，接入网设备202可以包括但不限于：5G中的下一代基站(gnodeB，gNB)、演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved nodeB，或home node B，HNB)、基带单元(baseBand unit，BBU)、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、移动交换中心)等，本申请实施例并不做限定。接入网设备202也可以是具有通信模块的通信芯片。在本申请实施例提供的双终端设备进行数据传输的方法的执行过程中，接入网设备202可作为无线接入网(radio access network，RAN)基站向第一终端和第二终端提供无线网络连接，例如，接入网设备202可作为4G接入网—演进的通用移动通信系统(universal mobile telecommunications system，UMTS)的陆地无线接入网(evolved UMTS terrestrial radio access network，E-UTRAN)中的接入网基站，或者，接入网设备202可作为5G接入网—5G RAN中的接入网基站，或者，接入网设备202可作为未来无线通信系统中的接入网基站。
如图3所示，为本申请实施例适用的另一种双终端设备进行数据传输的系统的架构示意图。该双终端设备进行数据传输的系统300除了可以包括图2中的第一核心网设备201、接入网设备202外，还可以包括第一终端301、第二终端302、第二核心网设备303、第三核心网设备304、第四核心网设备305、第五核心网设备306、应用功能网元307。其中：
在本申请实施例中，第一终端301和第二终端302，可以是具有无线收发功能的设备， 可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。第一终端301和第二终端302能够与一个或多个通信系统的一个或多个网络设备进行通信，并接受接入网设备202提供的网络服务。举例来说，本申请实施例中的第一终端301和第二终端302可以是移动电话(或称为“蜂窝”电话)、具有移动终端的计算机等，第一终端301和第二终端302还可以是用户设备(user equipment，UE)、终端(terminal)、移动台(mobile station，MS)、手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端、增强现实(augmented reality，AR)终端、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。第一终端301和第二终端302也可以是具有通信模块的通信芯片。
在本申请实施例中，第二核心网设备303可以包括但不限于数据管理网元，用于处理用户标识、接入鉴权、注册、或移动性管理等。在5G通信系统中，数据管理网元所对应的网元或者实体可以为5G网络架构中的统一数据管理(unified data management，UDM)网元，其中Nudm是UDM网元提供的基于服务的接口，UDM网元可以通过Nudm与其他的网络功能通信。在未来通信系统如6G通信系统中，数据管理网元仍可以是UDM网元，或者数据管理网元有其它名称，本申请实施例对此不作限定。
在本申请实施例中，第三核心网设备304可以包括但不限于会话管理网元，用于负责管理终端设备的协议数据单元(protocol data unit，PDU)会话,PDU会话是一个用于传输PDU的通道，终端设备需要通过PDU会话与数据网络(data network，DN)互相传送PDU。PDU会话由会话管理网元负责建立、维护和删除等。会话管理网元包括会话管理(如会话建立、修改和释放，包含用户面网元和接入网之间的隧道维护)、用户面网元的选择和控制、业务和会话连续性(Service and Session Continuity，SSC)模式选择、漫游等会话相关的功能。在5G通信系统中，会话管理网元所对应的网元或者实体可以为5G无线通信系统中的会话管理功能(session management function，SMF)网元。在未来通信如第六代通信(the 6th generation，6G)通信系统中，会话管理网元仍可以是SMF网元，或者会话管理网元可以有其它名称，本申请实施例对此不作限定。
在本申请实施例中，第四核心网设备305可以包括但不限于用户面网元，用于分组路由和转发、用户面数据的服务质量(quality of service，QoS)处理等。在5G通信系统中，用户面网元所对应的网元或实体可以为5G无线通信系统中的用户面功能(user plane function，UPF)网元，在未来通信系统如第六代通信(the 6th generation，6G)系统中，用户面网元仍可以是UPF网元，或者用户面网元有其它名称，本申请实施例对此不作限定。
在本申请实施例中，第五核心网设备306可以包括但不限于网络开放功能网元，主要提供的服务使得第三代合作伙伴计划(3rd generation partnership project，3GPP)网络能够安全地向第三方的业务提供者应用功能网元307提供网络业务能力。在5G通信系统中，网络开放功能网元可以是(network exposure function，NEF)网元，Nnef是NEF网元提供的基于服务的接口，NEF网元可以通过Nnef与其他的网络功能通信，在未来通信系统如6G通信系统中，网络开放功能网元仍可以是NEF网元，或者有其它名称，本申请实施例对此不作限定。
在本申请实施例中，应用功能网元307，主要用于向3GPP网络提供应用层信息。在5G通信系统中，应用功能网元可以是应用功能(application function，AF)网元，Naf是AF网元提供的基于服务的接口，AF网元可以通过Naf与其他的网络功能通信，在未来通信系统如6G通信系统中，应用功能网元仍可以是AF网元，或者有其它名称，本申请实施例对此不作限定。示例性的，AF网元例如可以包括业务能力服务器(services capability server，SCS)或者应用服务器(application server，AS)。
此外，如图4所示，以5G通信系统为例，为本申请实施例适用的一种双终端设备进行数据传输的5G系统的架构示意图，该无线通信系统包括上述AMF网元、第一终端、第二终端、gNB、UPF网元、SMF网元、UDM网元、NEF网元、AF网元。此外，还可以包括位置管理功能(location management function，LMF)网元、认证服务器功能(authentication server function，AUSF)网元、网络切片选择功能(network slice selection function，NSSF)网元、网络功能存储功能(network exposure function Repository Function，NRF)网元、策略控制功能(policy control function，PCF)网元、统一数据存储(unified data repository，UDR)网元、非结构化数据存储功能(unstructured data storage function，UDSF)等，本申请实施例对此不作具体限定。
其中，图4中的N1接口为第一终端与AMF网元之间的参考点；N2接口为第二终端与AMF网元之间的参考点；N3接口为gNB和AMF网元的参考点，用于非接入层(non-access stratum，NAS)消息和下一代应用协议(next generation application protocol，NGAP)消息的发送等；N4接口为gNB和UPF网元的参考点，用于传输用户面的数据等；N5接口为SMF和UPF之间的参考点，用于传输例如N4连接的隧道标识信息，数据缓存指示信息，以及下行数据通知消息等信息；N6接口为UPF网元和DN之间的参考点，用于传输用户面的数据等。
此外，图4所示的AMF网元、SMF网元、UDM网元、NEF网元或者AF网元等控制面网元也可以采用服务化接口进行交互。比如，AMF网元对外提供的服务化接口可以为Namf；SMF网元对外提供的服务化接口可以为Nsmf；UDM网元对外提供的服务化接口可以为Nudm；NEF网元对外提供的服务化接口可以为Nnef；AF网元对外提供的服务化接口可以为Naf。相关描述可以参考23501标准中的5G系统架构(5G system architecture)图，在此不予赘述。
可以理解的是，上述网元或功能既可以是硬件设备中的网络元件，也可以是在专用硬件上运行软件功能，或者是平台(例如，云平台)上实例化的虚拟化功能。上述网元或功能可划分出一个或多个服务，进一步，还可能会出现独立于网络功能存在的服务。在本申请中，上述功能的实例、或上述功能中包括的服务的实例、或独立于网络功能存在的服务实例均可称为服务实例。
在介绍本申请实施例之前，首先对本申请中的部分用语进行解释说明，以便于本领域技术人员理解。
携带，可以是指某信息用于承载某信息或数据，也可以是指某信息由某信息构成。
互为备份关系，在本申请实施例中是指某终端故障时能够替代某终端进行数据传输。
另外，需要理解的是，本申请实施例中的术语“系统”和“网络”可被互换使用。“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“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的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。单数表达形式“一个”、“一种”、“所述”、“上述”、“该”和“这一”旨在也包括例如“一个或多个”这种表达形式，除非其上下文中明确地有相反指示。以及，除非有相反的说明，本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分，不用于限定多个对象的顺序、时序、优先级或者重要程度。例如，第一终端和第二终端，只是为了区分不同的终端，而并不是表示这两种终端的优先级或者重要程度等的不同。
在本申请实施例中描述的参考“一个实施例”或“一些实施例”等意味着在本申请的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此，在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例，而是意味着“一个或多个但不是所有的实施例”，除非是以其他方式另外特别强调。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
下面将结合图2至图4对本申请实施例提供的双终端设备进行数据传输的方法进行具体阐述。
应理解，本申请实施例所示方法不仅应用于如2-4的所示通信系统，还可以应用于未来其它的通信系统，例如6G通信系统等，在未来通信系统中，可能保持功能相同，但名称可能会改变。
在一些实施例中，如图5所示，为本申请实施例提供的一种双终端设备进行数据传输的方法的流程示意图，为方便说明，下面的描述中将第一核心网设备以AMF网元为例，第二核心网设备以UDM网元为例，第三核心网设备以SMF网元为例，第四核心网设备以UPF网元为例，接入网设备以gNB为例进行说明。其中，该方法流程包括以下步骤：
S501：第一终端和第二终端向AMF网元发送注册请求信息。相应的，AMF网元接收来自第一终端和第二终端的注册请求信息。其中，注册请求信息用于请求将终端接入核心网。
在一些实施例中，终端若需要接入核心网，可以向AMF网元发送携带终端的标识信息的注册请求信息，注册请求中可以携带终端的标识信息。其中，终端的标识信息可以为终端的国际移动设备识别码(international mobile equipment identity，IMEI)，或者用户永久标识(subscription permanent identifier，SUPI)，或者用户隐藏标识(subscription concealed identifier，SUCI)，或者其它可以标识终端的信息，本申请实施例不做具体限定。
需要说明的是，本申请实施例中，第一终端和第二终端向AMF网元发送注册请求信息，可以表示为第一终端向AMF网元发送注册请求信息后，第二终端再向AMF网元发送注册请求信息，也可以表示为第二终端向AMF网元发送注册请求信息后，第一终端再向AMF网元发送注册请求信息，也可以表示为第一终端和第二终端同时向AMF网元发送注册请求信息，本申请实施例不对此做具体限定。
S502：AMF网元确定第一终端与第二终端是互为备份关系。
在一些实施例中，AMF网元接收第一终端或第二终端的注册请求信息后，可以从UDM网元获取第二终端或第一终端的标识信息，根据第二终端或第一终端的标识信息确定第一终端与第二终端是互为备份关系。
例如，AMF网元接收第一终端的注册请求信息后，可以向UDM网元发送签约请求信 息，其中，签约请求信息用于请求UDM网元返回与第一终端互为备份的终端的标识信息，签约请求信息中携带第一终端的标识信息。相应的，UDM网元接收来自AMF网元的签约请求信息后，可以根据第一终端的标识信息确定与第一终端互为备份的终端是第二终端，向AMF网元发送签约信息，签约信息中携带第二终端的标识信息。相应的，AMF网元接收来自UDM网元的签约信息后，可以根据第二终端的标识信息确定第一终端与第二终端是互为备份关系。
在另外一些实施例中，AMF网元接收第一终端或第二终端的注册请求信息后，可以从第一终端或第二终端发送的注册请求信息获取第二终端或第一终端的标识信息，根据第一终端或第二终端的标识信息确定第一终端与第二终端是互为备份关系。
例如，第一终端的注册请求信息中可以携带与第一终端互为备份的终端的标识信息，比如，第二终端的标识信息。第二终端的注册请求信息中可以携带与第二终端互为备份的终端的标识信息，比如，第一终端的标识信息。AMF网元接收第一终端的注册请求信息后，可以从第一终端发送的注册请求信息获取第二终端的标识信息，根据第二终端的标识信息确定第一终端与第二终端是互为备份关系。
在另外一些实施例中，AMF网元接收第一终端或第二终端的注册请求信息后，可以从AF网元获取互为备份关系的终端的标识信息，根据互为备份关系的终端的标识信息确定第一终端与第二终端是互为备份关系。
例如，可以在AF网元中预先设置备份信息，其中，备份信息中包含互为备份关系的终端的标识信息，终端的标识信息可以为终端的IMEI，或者SUPI，或者SUCI，也可以为一般公共订阅标识(generic public subscription identifier，GPSI)，或者其它可以标识终端的信息，本申请实施例不做具体限定。AF网元可以将备份信息发送给SMF网元，相应的，SMF网元接收来自AF网元的备份信息。若终端的标识信息为GPSI，由于GPSI为外部标识，AMF网元无法识别GPSI，进而无法确认该标识信息对应的终端，则SMF网元可以将备份信息发送给UDM网元，相应的，UDM网元在接收来自SMF网元的备份信息后，将终端的标识信息由GPSI转译为终端的IMEI，或者SUPI，或者SUCI，或者其它可以标识终端的信息，然后将转译后的备份信息发送给AMF网元。若终端的标识信息不为GPSI，则SMF网元可以直接将备份信息发送给AMF网元。AMF网元接收第一终端的注册请求信息后，可以根据来自SMF网元或者UDM网元的备份信息确定第一终端与第二终端是互为备份关系。
在另外一些实施例中，AMF网元接收第一终端或第二终端的注册请求信息后，可以从SMF网元获取互为备份关系或者支持同一业务的终端的标识信息，根据互为备份关系或者支持同一业务的终端的标识信息确定第一终端与第二终端是互为备份关系。
例如，可以在SMF网元中预先设置备份信息或者业务信息，其中，备份信息中携带互为备份关系的终端的标识信息，业务信息中携带支持同一业务的终端的标识信息，终端的标识信息可以为终端的IMEI，或者SUPI，或者SUCI，也可以为GPSI，或者其它可以标识终端的信息，本申请实施例不做具体限定。若终端的标识信息为GPSI，则SMF网元可以将备份信息发送给UDM网元，相应的，UDM网元在接收来自SMF网元的备份信息后，将终端的标识信息由GPSI转译为终端的IMEI，或者SUPI，或者SUCI，或者其它可以标识终端的信息，然后将转译后的备份信息发送给AMF网元。若终端的标识信息不为GPSI，则SMF网元可以直接将备份信息发送给AMF网元。AMF网元接收第一终端的注 册请求信息后，可以根据来自SMF网元或者UDM网元的备份信息确定第一终端与第二终端是互为备份关系。
例如，可以在SMF网元中预先设置备份信息或者业务信息，其中，备份信息中携带互为备份关系的终端的标识信息，业务信息中携带支持同一业务的终端的标识信息，其中，终端的标识信息可以为终端的IMEI，或者SUPI，或者SUCI，也可以为GPSI，或者其它可以标识终端的信息，本申请实施例不做具体限定。若终端的标识信息为AMF网元或者gNB不可识别的标识信息，如GPSI，则将该终端的标识信息转译或映射为AMF网元或者gNB可识别的标识信息，如AMF UE NGAP ID或者RAN UE NGAP ID，然后将转译或映射后的备份信息发送给AMF网元。AMF网元接收第一终端的注册请求信息后，可以根据来自SMF网元的备份信息确定第一终端与第二终端是互为备份关系。
本申请实施例中，AMF网元接收第一终端或第二终端的注册请求信息后，确定第一终端与第二终端是互为备份关系，从而实现AMF网元对第一终端与第二终端的备份关系的鉴权，进一步的可以实现gNB对第一终端与第二终端的备份关系的鉴权，以使gNB在确定第一终端为主终端和第二终端为备终端时，可以向第一终端和第二终端发送一份下行数据，或者可以向第一终端发送下行数据并在第一终端故障时向第二终端发送下行数据，使得为主终端的第一终端和为备终端的第二终端可以共同与gNB进行数据传输，且只占用单倍的或者较少频谱资源，从而不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
S503：第一终端或第二终端向AMF网元发送会话建立请求信息。相应的，AMF网元接收来自第一终端或第二终端的会话建立请求信息，并将会话建立请求信息发送给SMF网元。其中，会话建立请求信息用于请求SMF网元建立第一终端和第二终端共享的PDU会话。
在一些实施例中，AMF网元接收来自第一终端的会话建立请求信息，并将该会话建立请求信息发送给SMF网元，其中，会话建立请求信息用于请求SMF网元建立第一终端和与第一终端是互为备份的终端共享的PDU会话，具体的，会话建立请求信息中可以携带会话建立指示信息，会话建立指示信息用于指示gNB与UPF网元建立第一终端和与第一终端是互为备份的终端共享的PDU会话，建立过程为SMF网元将CN Tunnel Info(UPF网元地址信息)和会话建立指示信息发送给AMF网元，并发送至gNB，gNB将AN Tunnel Info(gNB地址信息)发送给AMF网元，并由AMF网元转发给SMF网元，然后gNB到UPF网元之间的第一终端和与第一终端是互为备份关系的终端共享的PDU会话建立完成。
在另外一些实施例中，AMF网元接收第一终端的注册请求信息后，第一终端可以向AMF网元发送会话建立请求信息，相应的，AMF网元接收来自第一终端的会话建立请求信息，并将该会话建立请求信息发送给SMF网元，其中，会话建立请求信息用于请求SMF网元建立第一终端独享的PDU会话。AMF网元接收第二终端的注册请求信息后，第二终端可以向AMF网元发送会话建立请求信息，相应的，AMF网元接收来自第二终端的会话建立请求信息，并将该会话建立请求信息发送给SMF网元，其中，会话建立请求信息用于请求SMF网元建立第二终端独享的PDU会话。SMF网元接收第一终端和第二终端的会话建立请求信息后，若SMF网元或者UPF网元根据步骤502中所述的方法获取会话相关 签约信息，会话相关签约信息包含了互为备份关系的终端的标识信息，例如，第一终端和第二终端的标识信息，从而SMF网元或者UPF网元确定可以选择任一PDU会话向gNB发送一份数据，例如，可以选择第一终端的PDU会话向gNB发送一份数据，在gNB确定第一终端和第二终端互为备份关系时，gNB可以向第一终端和第二终端中的任一终端或者第一终端和第二终端发送一份数据。若gNB确定第一终端故障，gNB可以通知核心网设备进行PDU会话的改变，例如，可以使用第二终端的PDU会话向gNB发送一份数据。
在另外一些实施例中，AMF网元接收第一终端的注册请求信息后，第一终端可以向AMF网元发送会话建立请求信息，相应的，AMF网元接收来自第一终端的会话建立请求信息，并将该会话建立请求信息发送给SMF网元，其中，会话建立请求信息用于请求SMF网元建立第一终端独享的PDU会话。AMF网元接收第二终端的注册请求信息后，第二终端可以向AMF网元发送会话建立请求信息，相应的，AMF网元接收来自第二终端的会话建立请求信息，并将该会话建立请求信息发送给SMF网元，其中，会话建立请求信息用于请求SMF网元建立第二终端独享的PDU会话。SMF网元接收第一终端和第二终端的会话建立请求信息后，若SMF网元或者UPF网元并未获取会话相关签约信息，会话相关签约信息包含了互为备份关系的终端的标识信息，例如，第一终端和第二终端的标识信息，从而SMF网元或者UPF网元将分别使用第一终端和第二终端的PDU会话向gNB发送两份数据，gNB可以在接收AMF网元发送的配对指示信息后，确定第一终端与第二终端是互为备份关系，从而gNB只向第一终端和第二终端发送一份数据。
需要说明的是，本申请实施例中，第一终端或第二终端向AMF网元发送会话建立请求信息后，AMF网元将该会话建立请求信息发送给SMF网元，可以是AMF网元确定第一终端与第二终端是互为备份关系之前向SMF网元发送会话建立请求信息，也可以是AMF网元确定第一终端与第二终端是互为备份关系之后向SMF网元发送会话建立请求信息，本申请实施例不对此做具体限定。
需要说明的是，本申请实施例中，步骤503为可选步骤，第一终端可以向AMF网元发送用于请求建立第一终端独享的PDU会话的会话建立请求信息，第二终端可以向AMF网元发送用于请求建立第二终端独享的PDU会话的会话建立请求信息，本申请实施例不对此做具体限定。
本申请实施例中，AMF网元接收第一终端或第二终端的注册请求信息后，可以接收第一终端或第二终端的会话建立请求信息，并向SMF网元发送会话建立请求信息，以使SMF网元向gNB发送指示gNB与UPF网元建立第一终端和第二终端共享的PDU会话的会话建立指示信息，从而当任一终端接入网络时，若SMF网元确定与该终端互为备份的终端已触发建立PDU会话，可以不需要再次建立PDU会话，共享与该终端互为备份的终端建立的PDU会话即可，使得当主终端故障，备终端进行数据传输时可以直接使用主终端和备终端共享的PDU会话，不需要再重新建立新的PDU会话，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性。
S504：AMF网元向gNB发送配对指示信息。相应的，gNB接收来自AMF网元的配对指示信息。其中，配对指示信息用于指示第一终端与第二终端是互为备份关系。
在一些实施例中，AMF网元确定第一终端与第二终端是互为备份关系后，可以向gNB发送用于指示第一终端与第二终端是互为备份关系的配对指示信息，其中，配对指示信息中携带第一终端与第二终端的标识信息，标识信息为gNB可识别的标识信息，如AMF UE  NGAP ID或者RAN UE NGAP ID，发送配对指示信息的信令可以为NG-AP信令，如DOWNLINK NAS TRANSPORT或者INITIAL CONTEXT SETUP REQUEST或者UE CONTEXT MODIFICATION REQUEST。
本申请实施例中，AMF网元确定第一终端与第二终端是互为备份关系后，可以向gNB发送用于指示第一终端与第二终端是互为备份关系的配对指示信息，从而实现gNB对第一终端与第二终端的备份关系的鉴权，以使gNB在确定第一终端为主终端和第二终端为备终端时，可以向第一终端和第二终端发送一份下行数据，或者可以向第一终端发送下行数据并在第一终端故障时向第二终端发送下行数据，使得为主终端的第一终端和为备终端的第二终端可以共同与gNB进行数据传输，且只占用单倍或者较少的频谱资源，从而不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。在另外一些实施例中，AMF网元确定第一终端与第二终端是互为备份关系后，AMF网元可以直接向终端的对端应用层发送关联指示信息，也可以通过SMF网元或者UPF网元向对端应用层发送关联指示信息，本申请实施例不对此做具体限定。相应的，对端应用层接收来自AMF网元或者SMF网元或者UPF网元的关联指示信息。其中，终端的对端应用层是指终端发送的上行数据的目的网际互连协议(internet protocol，IP)地址对应的应用层，终端将上行数据发送给gNB后，gNB需将该上行数据发送给对端应用层，关联指示信息用于指示对端应用层在接收到第一终端或第二终端发送的上行数据时向第一终端和第二终端发送下行数据，关联指示信息中携带第一终端和第二终端的IP地址或第一终端和第二终端的IP地址以及对端应用层的IP地址。
需要说明的是，本申请实施例中，AMF网元向对端应用层发送关联指示信息，可以是AMF网元向gNB发送配对指示信息之前向对端应用层发送关联指示信息，也可以是AMF网元向gNB发送配对指示信息后向对端应用层发送关联指示信息，本申请实施例不对此做具体限定。
本申请实施例中，AMF网元确定第一终端与第二终端是互为备份关系后，可以向对端应用层发送用于指示对端应用层在接收到第一终端或第二终端发送的上行数据时向第一终端和第二终端发送下行数据的关联指示信息，使得对端应用层收到任一终端发送的上行数据时都会向该终端和与该终端是互为备份关系的终端发送下行数据，从而当终端只有收到下行数据才能发送上行数据或者对端应用层只有收到上行数据才能发送下行数据时，备终端也可以正常进行数据传输，避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性。
S505：gNB在根据配对指示信息确定第一终端为主终端和第二终端为备终端时，向第一终端发送第一配置信息，向第二终端发送第一配置信息的部分或全部。相应的，第一终端接收来自gNB的第一配置信息，第二终端接收来自gNB的第一配置信息的部分或全部。其中，第一配置信息中携带第一终端和第二终端共享的组无线网络临时标识RNTI或安全密钥。
在一些实施例中，gNB接收来自AMF网元的用于指示第一终端与第二终端是互为备份关系的配对指示信息后，可以确定互为备份关系的终端中的主终端以及备终端，在确定第一终端为主终端和第二终端为备终端时，可以向第一终端发送第一配置信息，向第二终端发送第一配置信息的部分或全部，其中，第一配置信息中携带第一终端和第二终端共享 的组无线网络临时标识(radio network tempory identity，RNTI)、安全密钥、安全算法或物理层配置等，组RNTI用于使gNB可以根据第一终端和第二终端共享的组RNTI向第一终端和第二终端发送一份下行数据，安全密钥可以为gNB基于第一终端的标识和第二终端的标识生成的密钥，或者gNB基于随机数生成的密钥，或者gNB分别为第一终端和第二终端生成的密钥，或者gNB接收的核心网设备基于第一终端的标识和第二终端的标识生成的密钥，本申请实施例不对此做具体限定，因为第一终端和第二终端可以共享部分或全部配置，所以gNB给第一终端发送数据时，第二终端也可以收到来自gNB的数据，且第二终端作为备份终端可以不进行对下行数据的上行反馈，以及支持不连续递交数据给上层。
在另外一些实施例中，当第一终端和第二终端的安全密钥被激活后，gNB可以将第一终端的安全密钥通过无线资源控制协议(radio resource control，RRC)消息发送给第二终端，使得第二终端可以使用第一终端的安全密钥解析gNB发送给第一终端的数据。此外，gNB可以把第一终端的标识信息，如小区无线网络临时标识(cell-radio network temporary identifier，C-RNTI)，发送给第二终端，此时第二终端同时保存第一终端的C-RNTI以及第二终端的C-RNTI，使得第二终端可以基于第一终端的C-RNTI接收gNB发送给第一终端的数据。
本申请实施例中，gNB在确定第一终端为主终端和第二终端为备终端时，可以向第一终端发送第一配置信息，向第二终端发送第一配置信息的部分或全部，从而第一终端和第二终端可以正常进行数据传输，且gNB可以根据第一终端和第二终端共享的组RNTI向第一终端和第二终端发送一份下行数据，使得为主终端的第一终端和为备终端的第二终端可以共同与gNB进行数据传输，且只占用单倍或者较少的频谱资源，不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
S506：gNB向第二终端发送第一状态指示信息。相应的，第二终端接收来自gNB的第一状态指示信息。其中，第一状态指示信息用于指示终端进入非工作状态，非工作状态为终端不发送上行数据但接收下行数据的状态、或终端不进行数据传输的状态、或终端不进行业务数据传输但进行信令传输以及媒体访问控制控制元素(medium access control control element，MAC CE)传输的状态。
在一些实施例中，gNB向第一终端发送第一配置信息，向第二终端发送第一配置信息的部分或全部后，可以向第二终端发送用于指示终端进入非工作状态的第一状态指示信息，其中，非工作状态为终端不发送上行数据但接收下行数据的状态、或终端不进行数据传输的状态、或终端不进行业务数据传输但进行信令传输以及MAC CE传输的状态，例如，在终端进入非工作状态时，终端可以不接收上下行业务数据但接收上下行信令，以及MAC CE等控制信息，或者终端可以接收下行数据并进行反馈，也可以接收下行数据不进行反馈，若进行反馈，gNB可以根据反馈信息确定一个分组数据汇聚协议(packet data convergence protocol，PDCP)服务数据单元(service data unit，SDU)或者一个完整的应用层数据包已经成功发送给了第一终端和第二终端中的任意一个终端，gNB不需要继续重复发送数据确保每个终端都收到，第一状态指示信息可以包含在下行控制信息(downlink control information，DCI)或者MAC CE中，也可以包含在RRC消息中，本申请实施例不对此做具体限定。
本申请实施例中，gNB可以向第二终端发送用于指示终端进入非工作状态的第一状态指示信息，使得第一终端可以正常进行数据传输，第二终端可以不进行数据传输或者第二终端不发送上行数据但和第一终端一起接收gNB发送的一份下行数据，从而为主终端的第一终端和为备终端的第二终端可以共同与gNB进行数据传输，且只占用单倍或者较少的频谱资源，从而不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
S507：gNB判断第一终端是否故障，若是，则向第一终端发送第一状态指示信息，向第二终端发送第二状态指示信息。相应的，第一终端接收来自gNB的第一状态指示信息，第二终端接收来自gNB的第二状态指示信息。其中，第二状态指示信息用于指示终端进入工作状态，工作状态为终端发送上行数据且接收下行数据的状态。
在一些实施例中，gNB向第二终端发送用于指示终端进入非工作状态的第一状态指示信息后，可以判断第一终端是否故障，若是，则向第一终端发送第一状态指示信息，向第二终端发送用于指示终端进入工作状态的第二状态指示信息，其中，工作状态为终端发送上行数据且接收下行数据的状态，第二状态指示信息可以通过DCI或者MAC CE发送，也可以通过RRC消息发送，如RRC重配置消息，本申请实施例不对此做具体限定。
需要说明的是，gNB向第二终端发送用于指示终端进入非工作状态的第一状态指示信息后，也可以在判断第一终端的无线链路出现问题或者判断第一终端的无线链路较差时，向第一终端发送第一状态指示信息，向第二终端发送用于指示终端进入工作状态的第二状态指示信息，本申请实施例不对此做具体限定。
例如，gNB可以获取第一终端的故障检测信息，若gNB在预设时段内未获取到故障检测信息，则确定第一终端故障或者第一终端的无线链路出现问题需要第二终端接管，若gNB在预设时段内获取到故障检测信息，则根据第一终端的故障检测信息确定第一终端是否故障。故障检测信息中可以携带第一终端的上行参考信号，反馈NACK信息(或者没收到ACK信息)、上行数据和故障指示信息中的至少一种，其中，故障指示信息用于指示第一终端是否故障，具体的，第二终端可以基于第一终端和第二终端之间的心跳包或者gNB的反馈NACK信息判断第一终端是否故障，并向gNB发送故障指示信息，本申请实施例不对此做具体限定。若故障检测信息中携带的是第一终端的上行参考信号，gNB可以基于第一终端的上行参考信号进行上行测量，如果测量值低于预设阈值一段时间，则可判定第一终端故障，或者第一终端的无线链路出现问题。若故障检测信息中携带的是第一终端的反馈信息，若基站在预设时段内未收到第一终端对下行数据的反馈信息，则可判定第一终端故障，或者第一终端的无线链路出现问题。本申请实施例中，gNB在确定第一终端故障时，向第一终端发送用于指示终端进入非工作状态的第一状态指示信息，向第二终端发送用于指示终端进入工作状态的第二状态指示信息，使得为备终端的第二终端可以替代为主终端的第一终端与gNB进行数据传输，避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性。
本申请实施例中，AMF网元确定第一终端与第二终端是互为备份关系后，可以向gNB发送用于指示第一终端与第二终端是互为备份关系的配对指示信息，以使gNB在根据该配对指示信息确定第一终端为主终端和第二终端为备终端时，可以向第一终端和第二终端发 送一份下行数据，使得为主终端的第一终端和为备终端的第二终端可以共同与gNB进行数据传输，且只占用单倍或者较少的频谱资源，从而不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
下面结合具体实施例图6，对上述图2至图4所示的实施例进行详细的说明。
在另外一些实施例中，以图2或图3所示的无线通信系统应用于如图4所示的5G无线通信系统为例，如图6所示，为本申请实施例提供的另一种双终端设备进行数据传输的方法。其中，该方法流程包括以下步骤：
S601：第一终端和第二终端向AMF网元发送注册请求信息。相应的，AMF网元接收来自第一终端和第二终端的注册请求信息。其中，注册请求信息用于请求将终端接入核心网。
S602：AMF网元确定第一终端与第二终端是互为备份关系。
S603：第一终端或第二终端向AMF网元发送会话建立请求信息。相应的，AMF网元接收来自第一终端或第二终端的会话建立请求信息，并将会话建立请求信息发送给SMF网元。其中，会话建立请求信息用于请求SMF网元建立第一终端和第二终端共享的PDU会话。
S604：AMF网元向gNB发送配对指示信息。相应的，gNB接收来自AMF网元的配对指示信息。其中，配对指示信息用于指示第一终端与第二终端是互为备份关系。
其中，步骤S601-S604与图5所示的实施例中的步骤S501-S504相同，相关描述可参考图5所示的实施例，在此不再赘述。
S605：gNB在根据配对指示信息确定第一终端为主终端和第二终端为备终端时，向第一终端发送第二配置信息，向第二终端发送第三配置信息。相应的，第一终端接收来自gNB的第二配置信息，第二终端接收来自gNB的第三配置信息。其中，第二配置信息中携带第一终端的RNTI或安全密钥或时频资源，第三配置信息中携带第二终端的RNTI或安全密钥或时频资源。
在一些实施例中，gNB接收来自AMF网元的用于指示第一终端与第二终端是互为备份关系的配对指示信息后，可以确定互为备份关系的终端中的主终端以及备终端，在确定第一终端为主终端和第二终端为备终端时，可以向第一终端发送第二配置信息，向第二终端发送第三配置信息，其中，第二配置信息中携带第一终端的RNTI或安全密钥或时频资源，第三配置信息中携带第二终端的RNTI或安全密钥或时频资源。使得第一终端和第二终端可以正常进行数据传输，进一步的使得gNB可以向第一终端发送下行数据并在第一终端故障时向第二终端发送下行数据，从而为主终端的第一终端和为备终端的第二终端可以共同与gNB进行数据传输，且只占用单倍或者较少的频谱资源，不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
S606：gNB向第二终端发送第一状态指示信息。相应的，第二终端接收来自gNB的第一状态指示信息。其中，第一状态指示信息用于指示终端进入非工作状态，非工作状态为终端不进行数据传输的状态、或者终端不进行业务数据传输但进行信令以及MAC CE传输的状态。
在一些实施例中，gNB向第一终端发送第二配置信息，向第二终端发送第三配置信息后，可以向第二终端发送用于指示终端进入非工作状态的第一状态指示信息，其中，非工作状态为终端不进行数据传输的状态、或者终端不进行业务数据传输但进行信令以及MAC CE传输的状态，第一状态指示信息可以包含在DCI或者MAC CE中，也可以包含在RRC消息中，本申请实施例不对此做具体限定。
本申请实施例中，gNB可以向第二终端发送用于指示终端进入非工作状态的第一状态指示信息，使得第一终端可以正常进行数据传输，第二终端可以不进行数据传输或者不进行业务数据传输但进行信令以及MAC CE传输的状态，进一步的使得gNB可以在第一终端故障时向第二终端发送下行数据，从而为主终端的第一终端和为备终端的第二终端可以共同与gNB进行数据传输，且只占用单倍或者较少的频谱资源，不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
S607：gNB判断第一终端是否故障，若是，则向第一终端发送第一状态指示信息，向第二终端发送第二状态指示信息。相应的，第一终端接收来自gNB的第一状态指示信息，第二终端接收来自gNB的第二状态指示信息。其中，第二状态指示信息用于指示终端进入工作状态，工作状态为终端发送上行数据且接收下行数据的状态。
在一些实施例中，gNB向第二终端发送用于指示终端进入非工作状态的第一状态指示信息后，可以判断第一终端是否故障，若是，则向第一终端发送第一状态指示信息，向第二终端发送用于指示终端进入工作状态的第二状态指示信息，其中，工作状态为终端发送上行数据且接收下行数据的状态，第二状态指示信息可以通过DCI或者MAC CE发送，也可以通过RRC消息发送，如RRC重配置消息，本申请实施例不对此做具体限定。
需要说明的是，gNB向第二终端发送用于指示终端进入非工作状态的第一状态指示信息后，也可以在判断第一终端的无线链路出现问题或者判断第一终端的无线链路较差时，向第一终端发送第一状态指示信息，向第二终端发送用于指示终端进入工作状态的第二状态指示信息，本申请实施例不对此做具体限定。
例如，gNB可以获取第一终端的故障检测信息，若gNB在预设时段内未获取到故障检测信息，则确定第一终端故障或者第一终端的无线链路出现问题需要第二终端接管，若gNB在预设时段内获取到故障检测信息，则根据第一终端的故障检测信息确定第一终端是否故障。故障检测信息中可以携带第一终端的上行参考信号，反馈NACK信息(或者没收到ACK信息)、上行数据和故障指示信息中的至少一种，其中，故障指示信息用于指示第一终端是否故障，具体的，第二终端可以基于第一终端和第二终端之间的心跳包或者gNB的反馈NACK信息判断第一终端是否故障，并向gNB发送故障指示信息，本申请实施例不对此做具体限定。若故障检测信息中携带的是第一终端的上行参考信号，gNB可以基于第一终端的上行参考信号进行上行测量，如果测量值低于预设阈值一段时间，则可判定第一终端故障，或者第一终端的无线链路出现问题。若故障检测信息中携带的是第一终端的反馈信息，若基站在预设时段内未收到第一终端对下行数据的反馈信息，则可判定第一终端故障，或者第一终端的无线链路出现问题。
本申请实施例中，gNB在确定第一终端故障时，向第一终端发送用于指示终端进入非工作状态的第一状态指示信息，向第二终端发送用于指示终端进入工作状态的第二状态指 示信息，即gNB可以在第一终端故障时向第二终端发送下行数据，从而为备终端的第二终端可以替代为主终端的第一终端与gNB进行数据传输，且只占用单倍或者较少的频谱资源，不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
本申请实施例中，AMF网元确定第一终端与第二终端是互为备份关系后，可以向gNB发送用于指示第一终端与第二终端是互为备份关系的配对指示信息，以使gNB在根据该配对指示信息确定第一终端为主终端和第二终端为备终端时，可以向第一终端发送下行数据并在第一终端故障时向第二终端发送下行数据，使得为主终端的第一终端和为备终端的第二终端可以共同与gNB进行数据传输，且只占用单倍或者较少的频谱资源，从而不仅避免出现主终端设备故障就不能再进行数据传输的情况，尽可能减小了终端设备故障对终端设备的业务连续性的影响，提高了终端设备的可靠性，而且消耗的频谱资源较少，有助于缓解频谱资源紧张的问题。
应理解，本申请实施例中，各个核心网设备和基站可以执行本申请实施例中的部分或全部步骤，这些步骤仅是示例，本申请实施例还可以执行其它步骤或者各种步骤的变形。此外，各个步骤可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部步骤。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
上述主要从各个网元之间以及各个核心网设备与基站之间的交互的角度对本申请实施例提供的方案进行了介绍。应理解，上述第一核心网设备或基站为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对第一核心网设备或基站进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，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。
在采用集成的单元(模块)的情况下，图7示出了本申请实施例中适用的一种第一核心网设备的结构示意图。如图7所示，第一核心网设备700可以包括：处理单元701、发送单元702。
其中，处理单元701用于对第一核心网设备700的动作进行控制管理以及支持第一核心网设备700与其他网络实体的通信，例如，处理单元701用于支持第一核心网设备700执行图5中的过程S501、S502、S504，和/或用于本文所描述的技术的其它过程。发送单元702用于支持第一核心网设备700与其他网络实体的通信，例如与图5所示的第一核心网设备和/或基站之间的通信。
可选的，第一核心网设备700还可以包括存储单元703，用于存储第一核心网设备700的程序代码和/或数据。具体的，可以参考如下描述：
处理单元701，用于确定第一终端与第二终端是互为备份关系；
发送单元702，用于向基站发送配对指示信息，所述配对指示信息用于指示所述第一终端与所述第二终端是互为备份关系，以使所述基站在根据所述配对指示信息确定所述第一终端为主终端和所述第二终端为备终端时，向所述第一终端和所述第二终端发送一份下行数据，或者向所述第一终端发送下行数据并在所述第一终端故障时向所述第二终端发送下行数据。
在一种可能的设计中，处理单元701，可以具体用于：接收所述第一终端和所述第二终端发送的注册请求消息，所述注册请求消息用于请求将终端接入核心网；接收所述第一终端或所述第二终端发送的注册请求信息后，从第二核心网设备获取所述第二终端或所述第一终端的标识信息，根据所述第二终端或所述第一终端的标识信息确定所述第一终端与所述第二终端是互为备份关系；或者，接收所述第一终端或所述第二终端发送的注册请求信息后，从所述第一终端或所述第二终端发送的注册请求信息获取所述第二终端或所述第一终端的标识信息，根据所述第二终端或所述第二终端的标识信息确定所述第一终端与所述第二终端是互为备份关系；或者，接收所述第一终端或所述第二终端发送的注册请求信息后，从应用功能AF网元获取互为备份关系的终端的标识信息，根据所述互为备份关系的终端的标识信息确定所述第一终端与所述第二终端是互为备份关系。
在一种可能的设计中，处理单元701，还可以用于接收所述第一终端或所述第二终端发送的会话建立请求信息，并向第三核心网设备发送所述会话建立请求信息，所述会话建立请求信息用于请求基站与第四核心网设备建立所述第一终端和所述第二终端共享的协议数据单元PDU会话。
在一种可能的设计中，发送单元702，还可以用于向终端的对端应用层发送关联指示信息，所述关联指示信息用于指示所述对端应用层在接收到所述第一终端或所述第二终端发送的上行数据时向所述第一终端和所述第二终端发送下行数据，所述关联指示信息中携带所述第一终端和所述第二终端的网际互连协议IP地址或所述第一终端和所述第二终端的IP地址以及所述对端应用层的IP地址。
应理解，第一核心网设备700中的各个模块的操作和/或功能分别为了实现图5到图6所示的双终端设备进行数据传输的方法的相应流程，为了简洁，在此不再赘述。
在采用集成的单元(模块)的情况下，图8示出了本申请实施例中适用的另一种第一核心网设备的结构示意图。如图8所示，第一核心网800可以包括至少一个处理器801和存储器802。所述存储器802存储一个或多个计算机程序，例如存储第一核心网800必要的一个或多个计算机程序。所述处理器801用于支持第一核心网800实现上述双终端设备进行数据传输的方法，例如，当所述存储器802存储的一个或多个计算机程序被所述至少一个处理器801执行时，使得所述第一核心网800可以实现图5-图6所示的双终端设备进行数据传输的方法的实施例的任意一种可能，和/或用于实现本文所描述的其他实施例。
基于与上述方法实施例相同构思，本申请实施例中还提供一种第一核心网设备，所述第一核心网设备包括执行上述双终端设备进行数据传输的方法实施例，或者方法实施例的任意一种可能的实现方式的模块/单元。这些模块/单元可以通过硬件实现，也可以通过硬件执行相应的软件实现。
在采用集成的单元(模块)的情况下，图9示出了本申请实施例中适用的一种基站的结构示意图。如图9所示，基站900可以包括：接收单元901、发送单元902和处理单元903。
其中，处理单元903用于对基站900的动作进行控制管理，例如，处理单元903用于支持基站900执行图5中的过程S507，和/或用于本文所描述的技术的其它过程。接收单元901和发送单元902用于支持基站900与其他网络实体的通信，例如与图5所示的第一核心网设备和/或应用层之间的通信。
可选的，基站900还可以包括存储单元904，用于存储基站900的程序代码和/或数据。具体的，可以参考如下描述：
接收单元901，用于接收第一核心网设备发送的配对指示信息，所述配对指示信息用于指示第一终端与第二终端是互为备份关系；
发送单元902，用于在根据所述配对指示信息确定所述第一终端为主终端和所述第二终端为备终端时，向所述第一终端和所述第二终端发送一份下行数据，或者向所述第一终端发送下行数据并在所述第一终端故障时向所述第二终端发送下行数据。
在一种可能的设计中，接收单元901，还可以用于接收第三核心网设备发送的会话建立指示信息，所述会话建立指示信息用于指示所述基站与第四核心网设备建立所述第一终端和所述第二终端共享的协议数据单元PDU会话；根据所述会话建立指示信息，与所述第四核心网设备建立所述第一终端和所述第二终端共享的PDU会话。
在一种可能的设计中，发送单元902在向所述第一终端和所述第二终端发送一份下行数据时，具体用于：向所述第一终端发送所述第一配置信息，向所述第二终端发送所述第一配置信息的部分或全部，所述第一配置信息中携带所述第一终端和所述第二终端共享的组无线网络临时标识RNTI或安全密钥。
本申请实施例这里不对安全密钥的具体内容限定，所述安全密钥可以为下述情况中的任意一种或多种：所述基站基于所述第一终端的标识和所述第二终端的标识生成的密钥；或者，所述基站基于随机数生成的密钥；或者，所述基站为所述第一终端和所述第二终端生成的密钥；或者，所述基站接收的核心网设备基于所述第一终端的标识和所述第二终端的标识生成的密钥。
在一种可能的设计中，发送单元902，还可以用于向所述第二终端发送第一状态指示信息，所述第一状态指示信息用于指示终端进入非工作状态，所述非工作状态为终端不发送上行数据但接收下行数据的状态、或终端不进行数据传输的状态、或终端不进行业务数据传输但进行信令传输的状态。
在一种可能的设计中，处理单元903，可以用于判断所述第一终端是否故障，若是，则向所述第一终端发送所述第一状态指示信息，向所述第二终端发送第二状态指示信息，所述第二状态指示信息用于指示终端进入工作状态，所述工作状态为终端发送上行数据且接收下行数据的状态。
在一种可能的设计中，处理单元903判断所述第一终端是否故障时，具体用于：获取所述第一终端的故障检测信息，所述故障检测信息中携带所述第一终端的上行参考信号、反馈NACK信息、上行数据和故障指示信息中的至少一种，所述故障指示信息用于指示所述第一终端是否故障；若在预设时段内未获取到所述故障检测信息，则确定所述第一终端故障；若在预设时段内获取到所述故障检测信息，则根据所述故障检测信息确定所述第一 终端是否故障。
应理解，基站900中的各个模块的操作和/或功能分别为了实现图5到图6所示的双终端设备进行数据传输的方法的相应流程，为了简洁，在此不再赘述。
在采用集成的单元(模块)的情况下，图10示出了本申请实施例中适用的另一种基站的结构示意图。如图10所示，基站1000可以包括至少一个处理器1001和存储器1002。所述存储器1002存储一个或多个计算机程序，例如存储基站1000必要的一个或多个计算机程序。所述处理器1001用于支持基站1000实现上述双终端设备进行数据传输的方法，例如，当所述存储器1002存储的一个或多个计算机程序被所述至少一个处理器801执行时，使得所述基站1000可以实现图5-图6所示的双终端设备进行数据传输的方法的实施例的任意一种可能，和/或用于实现本文所描述的其他实施例。
基于与上述方法实施例相同构思，本申请实施例中还提供一种基站，所述基站包括执行上述双终端设备进行数据传输的方法实施例，或者方法实施例的任意一种可能的实现方式的模块/单元。这些模块/单元可以通过硬件实现，也可以通过硬件执行相应的软件实现。
基于与上述方法实施例相同构思，本申请实施例中还提供一种计算机可读存储介质，其上存储有计算机程序，该计算机程序被计算机上运行时，使得该计算机执行上述双终端设备进行数据传输的方法实施例、方法实施例的任意一种可能的实现方式，例如执行图5-图6所示的双终端设备进行数据传输的方法的实施例的任意步骤，和/或执行本文所描述的技术的其它过程。
基于与上述方法实施例相同构思，本申请实施例中还提供一种程序产品，当所述程序产品在计算机上运行时，使得该计算机执行上述双终端设备进行数据传输的方法实施例、方法实施例的任意一种可能的实现方式，例如执行图5-图6所示的双终端设备进行数据传输的方法的实施例的任意步骤，和/或执行本文所描述的技术的其它过程。
基于与上述方法实施例相同构思，本申请实施例中还提供一种芯片，该芯片可以与第一核心网设备或基站中的存储器耦合，用于调用存储器中存储的计算机程序并执行上述双终端设备进行数据传输的方法实施例、方法实施例的任意一种可能的实现方式，例如执行图5-图6所示的双终端设备进行数据传输的方法的实施例的任意步骤，和/或执行本文所描述的技术的其它过程。
应理解，本申请实施例中的处理器或处理单元(如图7至图10所示的处理器或处理单元)可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述双终端设备进行数据传输的方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用中央处理器(central processing unit，CPU)，通用处理器，数字信号处理(digital signal processing，DSP)，专用集成电路(application specific integrated circuits，ASIC)，现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合；也可以是实现计算功能的组合，例如包括一个或多个微处理器组合，DSP和微处理器的组合等等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
应理解，本申请实施例中的存储器或存储单元可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically  EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本申请描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例中所描述的各种说明性的逻辑单元和电路可以通过通用处理器，数字信号处理器，专用集成电路(application specific integrated circuit，ASIC)，现场可编程门阵列(field programmable gate array，FPGA)或其它可编程逻辑装置，离散门或晶体管逻辑，离散硬件部件，或上述任何组合的设计来实现或操作所描述的功能。通用处理器可以为微处理器，可选地，该通用处理器也可以为任何传统的处理器、控制器、微控制器或状态机。处理器也可以通过计算装置的组合来实现，例如数字信号处理器和微处理器，多个微处理器，一个或多个微处理器联合一个数字信号处理器核，或任何其它类似的配置来实现。
本申请实施例中所描述的方法或算法的步骤可以直接嵌入硬件、处理器执行的软件单元、或者这两者的结合。软件单元可以存储于RAM、闪存、ROM、EPROM、EEPROM、寄存器、硬盘、可移动磁盘、CD-ROM或本领域中其它任意形式的存储媒介中。示例性地，存储媒介可以与处理器连接，以使得处理器可以从存储媒介中读取信息，并可以向存储媒介存写信息。可选地，存储媒介还可以集成到处理器中。处理器和存储媒介可以设置于ASIC中，ASIC可以设置于通信设备(如第一核心网设备、基站等)中，例如可以设置于通信设备中的不同的部件中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时，全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器等数据存储设备。所述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，DVD；还可以是半导体介质，例如，固态硬盘(solid state disk，SSD)。
本申请实施例是参照实施例所涉及的方法、装置、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/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。可提供这些计算机程序指令到通用计算机、专用计机、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。
这些计算机程序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计算机可读存储器中，使得存储在该计算机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。
这些计算机程序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。

Claims (23)

  1. 一种双终端设备进行数据传输的方法，其特征在于，包括：
    第一核心网设备确定第一终端与第二终端是互为备份关系；
    所述第一核心网设备向基站发送配对指示信息，所述配对指示信息用于指示所述第一终端与所述第二终端是互为备份关系，以使所述基站在根据所述配对指示信息确定所述第一终端为主终端和所述第二终端为备终端时，向所述第一终端和所述第二终端发送一份下行数据，或者向所述第一终端发送下行数据并在所述第一终端故障时向所述第二终端发送下行数据。
  2. 如权利要求1所述的方法，其特征在于，所述第一核心网设备确定第一终端与第二终端是互为备份关系，包括：
    所述第一核心网设备接收所述第一终端和所述第二终端发送的注册请求消息，所述注册请求消息用于请求将终端接入核心网；
    所述第一核心网设备接收所述第一终端或所述第二终端发送的注册请求信息后，从第二核心网设备获取所述第二终端或所述第一终端的标识信息，根据所述第二终端或所述第一终端的标识信息确定所述第一终端与所述第二终端是互为备份关系；或者，
    所述第一核心网设备接收所述第一终端或所述第二终端发送的注册请求信息后，从所述第一终端或所述第二终端发送的注册请求信息获取所述第二终端或所述第一终端的标识信息，根据所述第二终端或所述第二终端的标识信息确定所述第一终端与所述第二终端是互为备份关系；或者，
    所述第一核心网设备接收所述第一终端或所述第二终端发送的注册请求信息后，从应用功能AF网元获取互为备份关系的终端的标识信息，根据所述互为备份关系的终端的标识信息确定所述第一终端与所述第二终端是互为备份关系。
  3. 如权利要求2所述的方法，其特征在于，所述方法还包括：
    所述第一核心网设备接收所述第一终端或所述第二终端发送的注册请求信息后，接收所述第一终端或所述第二终端发送的会话建立请求信息，并向第三核心网设备发送所述会话建立请求信息，所述会话建立请求信息用于请求所述基站与第四核心网设备建立所述第一终端和所述第二终端共享的协议数据单元PDU会话。
  4. 一种双终端设备进行数据传输的方法，其特征在于，包括：
    基站接收第一核心网设备发送的配对指示信息，所述配对指示信息用于指示第一终端与第二终端是互为备份关系；
    所述基站在根据所述配对指示信息确定所述第一终端为主终端和所述第二终端为备终端时，向所述第一终端和所述第二终端发送一份下行数据，或者向所述第一终端发送下行数据并在所述第一终端故障时向所述第二终端发送下行数据。
  5. 如权利要求4所述的方法，其特征在于，所述方法还包括：
    所述基站接收第三核心网设备发送的会话建立指示信息，所述会话建立指示信息用于指示所述基站与第四核心网设备建立所述第一终端和所述第二终端共享的协议数据单元PDU会话；
    所述基站根据所述会话建立指示信息，与所述第四核心网设备建立所述第一终端和所述第二终端共享的PDU会话。
  6. 如权利要求4所述的方法，其特征在于，所述基站向所述第一终端和所述第二终 端发送一份下行数据，包括：
    所述基站向所述第一终端发送所述第一配置信息，向所述第二终端发送所述第一配置信息的部分或全部，所述第一配置信息中携带所述第一终端和所述第二终端共享的组无线网络临时标识RNTI或安全密钥。
  7. 如权利要求6所述的方法，其特征在于，所述安全密钥为下述情况中的任意一种或多种：
    所述基站基于所述第一终端的标识和所述第二终端的标识生成的密钥；或者，
    所述基站基于随机数生成的密钥；或者，
    所述基站为所述第一终端和所述第二终端生成的密钥；或者，
    所述基站接收的核心网设备基于所述第一终端的标识和所述第二终端的标识生成的密钥。
  8. 如权利要求6所述的方法，其特征在于，所述方法还包括：
    所述基站向所述第二终端发送第一状态指示信息，所述第一状态指示信息用于指示终端进入非工作状态，所述非工作状态为终端不发送上行数据但接收下行数据的状态、或终端不进行数据传输的状态、或终端不进行业务数据传输但进行信令传输的状态。
  9. 如权利要求8所述的方法，其特征在于，所述方法还包括：
    所述基站判断所述第一终端是否故障，若是，则向所述第一终端发送所述第一状态指示信息，向所述第二终端发送第二状态指示信息，所述第二状态指示信息用于指示终端进入工作状态，所述工作状态为终端发送上行数据且接收下行数据的状态。
  10. 如权利要求9所述的方法，其特征在于，所述基站判断所述第一终端是否故障，包括：
    所述基站获取所述第一终端的故障检测信息，所述故障检测信息中携带所述第一终端的上行参考信号、反馈NACK信息、上行数据和故障指示信息中的至少一种，所述故障指示信息用于指示所述第一终端是否故障；
    若在预设时段内未获取到所述故障检测信息，则确定所述第一终端故障；
    若在预设时段内获取到所述故障检测信息，则根据所述故障检测信息确定所述第一终端是否故障。
  11. 一种第一核心网设备，其特征在于，包括：
    处理单元，用于确定第一终端与第二终端是互为备份关系；
    发送单元，用于向基站发送配对指示信息，所述配对指示信息用于指示所述第一终端与所述第二终端是互为备份关系，以使所述基站在根据所述配对指示信息确定所述第一终端为主终端和所述第二终端为备终端时，向所述第一终端和所述第二终端发送一份下行数据，或者向所述第一终端发送下行数据并在所述第一终端故障时向所述第二终端发送下行数据。
  12. 如权利要求11所述的第一核心网设备，其特征在于，所述处理单元，具体用于：
    接收所述第一终端和所述第二终端发送的注册请求消息，所述注册请求消息用于请求将终端接入核心网；
    接收所述第一终端或所述第二终端发送的注册请求信息后，从第二核心网设备获取所述第二终端或所述第一终端的标识信息，根据所述第二终端或所述第一终端的标识信息确定所述第一终端与所述第二终端是互为备份关系；或者，
    接收所述第一终端或所述第二终端发送的注册请求信息后，从所述第一终端或所述第二终端发送的注册请求信息获取所述第二终端或所述第一终端的标识信息，根据所述第二终端或所述第二终端的标识信息确定所述第一终端与所述第二终端是互为备份关系；或者，
    接收所述第一终端或所述第二终端发送的注册请求信息后，从应用功能AF网元获取互为备份关系的终端的标识信息，根据所述互为备份关系的终端的标识信息确定所述第一终端与所述第二终端是互为备份关系。
  13. 如权利要求12所述的第一核心网设备，其特征在于，所述处理单元，还用于：
    接收所述第一终端或所述第二终端发送的会话建立请求信息，并向第三核心网设备发送所述会话建立请求信息，所述会话建立请求信息用于请求所述基站与第四核心网设备建立所述第一终端和所述第二终端共享的协议数据单元PDU会话。
  14. 一种基站，其特征在于，包括：
    接收单元，用于接收第一核心网设备发送的配对指示信息，所述配对指示信息用于指示第一终端与第二终端是互为备份关系；
    发送单元，用于在根据所述配对指示信息确定所述第一终端为主终端和所述第二终端为备终端时，向所述第一终端和所述第二终端发送一份下行数据，或者向所述第一终端发送下行数据并在所述第一终端故障时向所述第二终端发送下行数据。
  15. 如权利要求14所述的基站，其特征在于，所述接收单元，还用于：
    接收第三核心网设备发送的会话建立指示信息，所述会话建立指示信息用于指示所述基站与第四核心网设备建立所述第一终端和所述第二终端共享的协议数据单元PDU会话；
    根据所述会话建立指示信息，与所述第四核心网设备建立所述第一终端和所述第二终端共享的PDU会话。
  16. 如权利要求14所述的基站，其特征在于，所述发送单元在向所述第一终端和所述第二终端发送一份下行数据时，具体用于：
    向所述第一终端发送所述第一配置信息，向所述第二终端发送所述第一配置信息的部分或全部，所述第一配置信息中携带所述第一终端和所述第二终端共享的组无线网络临时标识RNTI或安全密钥。
  17. 如权利要求16所述的基站，其特征在于，所述安全密钥为下述情况中的任意一种或多种：
    所述基站基于所述第一终端的标识和所述第二终端的标识生成的密钥；或者，
    所述基站基于随机数生成的密钥；或者，
    所述基站为所述第一终端和所述第二终端生成的密钥；或者，
    所述基站接收的核心网设备基于所述第一终端的标识和所述第二终端的标识生成的密钥。
  18. 如权利要求16所述的基站，其特征在于，所述发送单元，还用于：
    向所述第二终端发送第一状态指示信息，所述第一状态指示信息用于指示终端进入非工作状态，所述非工作状态为终端不发送上行数据但接收下行数据的状态、或终端不进行数据传输的状态、或终端不进行业务数据传输但进行信令传输的状态。
  19. 如权利要求18所述的基站，其特征在于，所述基站还包括处理单元；
    所述处理单元，用于判断所述第一终端是否故障，若是，则向所述第一终端发送所述第一状态指示信息，向所述第二终端发送第二状态指示信息，所述第二状态指示信息用于 指示终端进入工作状态，所述工作状态为终端发送上行数据且接收下行数据的状态。
  20. 如权利要求19所述的基站，其特征在于，所述处理单元判断所述第一终端是否故障时，具体用于：
    获取所述第一终端的故障检测信息，所述故障检测信息中携带所述第一终端的上行参考信号、反馈NACK信息、上行数据和故障指示信息中的至少一种，所述故障指示信息用于指示所述第一终端是否故障；
    若在预设时段内未获取到所述故障检测信息，则确定所述第一终端故障；
    若在预设时段内获取到所述故障检测信息，则根据所述故障检测信息确定所述第一终端是否故障。
  21. 一种双终端设备进行数据传输的装置，其特征在于，包括：至少一个处理器和存储器；
    所述存储器存储一个或多个计算机程序；
    当所述存储器存储的一个或多个计算机程序被所述至少一个处理器执行时，使得所述装置执行如权利要求1-3任一所述的方法，或者使得所述装置执行如权利要求4-10任一所述的方法。
  22. 一种计算机存储介质，其特征在于，所述计算机可读存储介质包括计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1-3任一所述的方法，或者使得所述计算机执行如权利要求4-10任一所述的方法。
  23. 一种双终端设备进行数据传输的系统，其特征在于，所述系统包括如权利要求11-13任一项所述的第一核心网设备和如权利要求14-20任一项所述的基站。
PCT/CN2020/119569 2020-09-30 2020-09-30 一种双终端设备进行数据传输的方法及装置 WO2022067730A1 (zh)

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