WO2023202329A1 - 信息处理方法、装置、终端及存储介质 - Google Patents

信息处理方法、装置、终端及存储介质 Download PDF

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Publication number
WO2023202329A1
WO2023202329A1 PCT/CN2023/084178 CN2023084178W WO2023202329A1 WO 2023202329 A1 WO2023202329 A1 WO 2023202329A1 CN 2023084178 W CN2023084178 W CN 2023084178W WO 2023202329 A1 WO2023202329 A1 WO 2023202329A1
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WO
WIPO (PCT)
Prior art keywords
identification information
remote terminal
terminal
mapping relationship
relay terminal
Prior art date
Application number
PCT/CN2023/084178
Other languages
English (en)
French (fr)
Inventor
赵亚利
Original Assignee
大唐移动通信设备有限公司
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.)
Filing date
Publication date
Application filed by 大唐移动通信设备有限公司 filed Critical 大唐移动通信设备有限公司
Priority to US18/853,146 priority Critical patent/US20250220740A1/en
Priority to EP23790989.0A priority patent/EP4514051A1/en
Publication of WO2023202329A1 publication Critical patent/WO2023202329A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/2866—Architectures; Arrangements
    • H04L67/2871—Implementation details of single intermediate entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to an information processing method, device, terminal and storage medium.
  • the terminal-to-network equipment relay (UE-to-Network Relay, U2N Relay) and the terminal-to-terminal relay (UE-to- UE Relay, U2U Relay).
  • the remote terminal can access the network device through the U2U Relay; for U2U Relay, the remote terminal can access the target terminal through the U2U Relay.
  • the adaptation layer of the relay terminal needs to configure the identification information of the bearer interface.
  • this identification information will make the header overhead of the adaptation layer larger, resulting in lower resource utilization during end-to-end communication.
  • This application provides an information processing method, device, terminal and storage medium to reduce the header overhead of the adaptation layer and ensure the data transmission efficiency of end-to-end communication.
  • embodiments of the present disclosure provide an information processing method, which is applied to a relay terminal.
  • the information processing method includes: obtaining the first identification information used by the first remote terminal and the second remote terminal in the direct communication interface.
  • a remote terminal and a second remote terminal perform an end-to-end communication connection through a relay terminal; determine a mapping relationship between the first identification information and the second identification information; and provide the first remote terminal and/or the second remote terminal with The terminal sends the mapping relationship; wherein the first identification information includes the source address and the destination address used by the direct communication interface, or the first identification information includes the source address, the destination address and the transmission type, and the number of bits of the second identification information is smaller than the first identification information number of bits.
  • obtaining the first identification information used by the first remote terminal and the second remote terminal on the direct communication interface includes: receiving the information sent by the first remote terminal and/or the second remote terminal. first identification information; or, the lower layer of the relay terminal obtains the first identification information from the upper layer of the relay terminal.
  • receiving the first identification information sent by the first remote terminal and/or the second remote terminal includes: receiving the first identification information sent by the first remote terminal through the first PC5-RRC signaling. Identification information; and/or, receiving the first identification information sent by the second remote terminal through the second PC5-RRC signaling.
  • the lower layer of the relay terminal obtains the first identification information from the higher layer of the relay terminal, including: the higher layer of the relay terminal obtains the first identification information through the PC5-S signaling process, and sends the first identification information to the upper layer of the relay terminal. low hair The first indication information carrying the first identification information is sent, so that the lower layer of the relay terminal obtains the first identification information through the first indication information.
  • the information processing method further includes: receiving second indication information sent by the first remote terminal and/or the second remote terminal, and determining the first identification information and the second indication information according to the second indication information.
  • the mapping relationship between the identification information; or, the mapping relationship between the first identification information and the second identification information is determined based on the first identification information and the second identification information currently available to the relay terminal.
  • determining the mapping relationship between the first identification information and the second identification information currently available to the relay terminal according to the first identification information and the second identification information currently available to the relay terminal includes: determining a currently unoccupied candidate The second identification information is the second identification information currently available to the relay terminal; for the first identification information, select the second identification information from the second identification information currently available to the relay terminal; according to the second identification information, determine the first identification information and Mapping relationship of the second identification information.
  • sending the mapping relationship between the first identification information and the second identification information to the first remote terminal and/or the second remote terminal includes: through the relay terminal and the first remote terminal. Send the mapping relationship to the first remote terminal through the first PC5-RRC signaling between the relay terminal and the second remote terminal; and/or send the mapping relationship to the second remote terminal through the second PC5-RRC signaling between the relay terminal and the second remote terminal.
  • the terminal sends the mapping relationship.
  • the relay terminal carries the second identification information in the adaptation layer PDU header when transmitting data with the first remote terminal through the direct communication interface; and/or, the relay terminal carries the second identification information through the direct communication interface.
  • the second identification information is carried in the adaptation layer PDU header.
  • the adaptation layer PDU header also includes at least one of the following: bearer identification information through the end-to-end direct communication interface between the first remote terminal and the second remote terminal; or, through Logical channel identifier LCID of the end-to-end direct communication interface between the first remote terminal and the second remote terminal.
  • embodiments of the present disclosure provide an information processing method, which is applied to a first remote terminal or a second remote terminal.
  • the first remote terminal performs an end-to-end communication connection with the second remote terminal through a relay terminal.
  • the information processing method includes: obtaining the mapping relationship between the first identification information and the second identification information; determining the adaptation layer PDU header format according to the mapping relationship; wherein the first identification information includes the source address and the destination address used by the direct communication interface, Or the first identification information includes a source address, a destination address and a transmission type, and the number of bits of the second identification information is smaller than the number of bits of the first identification information.
  • obtaining the mapping relationship between the first identification information and the second identification information includes: receiving the mapping relationship sent by the relay terminal; or determining the mapping relationship according to the first identification information and the second identification information.
  • receiving the mapping relationship sent by the relay terminal includes: obtaining the first identification information; and sending the message to the relay through the first PC5-RRC signaling between the first remote terminal and the relay terminal.
  • the terminal sends the second indication information and the first identification information, and receives the mapping relationship sent by the relay terminal through the first PC5-RRC signaling; and/or, through the second PC5 between the second remote terminal and the relay terminal -RRC signaling, sending the second indication information and the first identification information to the relay terminal, and receiving the mapping relationship sent by the relay terminal through the second PC5-RRC signaling.
  • determining the mapping relationship according to the first identification information and the second identification information includes: obtaining the first identification information; determining that the currently unoccupied candidate second identification information is currently available to the relay terminal. second identification information; for the first identification information, select the second identification information from the second identification information currently available to the relay terminal; and for the second identification information, determine the mapping relationship between the first identification information and the second identification information.
  • obtaining the first identification information includes: the upper layer of the first remote terminal obtains the first identification information through the PC5-S signaling process, and sends the first identification information to the lower layer of the first remote terminal carrying the first identification information.
  • the third indication information of the identification information so that the lower layer of the first remote terminal obtains the first identification information through the third indication information; or, the end-to-end PC5-RRC signaling interaction process is performed through the lower layer of the first remote terminal, Obtain first identification information.
  • the information processing method also includes at least one of the following: the first remote terminal sends the mapping relationship to the relay terminal through the first PC5-RRC signaling; or the second remote terminal uses The second PC5-RRC signaling sends the mapping relationship to the relay terminal; or the first remote terminal sends the mapping relationship to the relay terminal through the end-to-end third PC5-RRC signaling between the first remote terminal and the second remote terminal.
  • the second remote terminal sends the mapping relationship; or, the second remote terminal sends the mapping relationship to the first remote terminal through the third PC5-RRC signaling.
  • the second identification information is carried in the adaptation layer PDU header; and/or the remote terminal When transmitting data with the relay terminal through the direct communication interface, the second identification information is carried in the adaptation layer PDU header.
  • the adaptation layer PDU header also includes at least one of the following: bearer identification information of the end-to-end direct communication interface between the first remote terminal and the second remote terminal; or, the first The logical channel identifier LCID of the end-to-end direct communication interface between the remote terminal and the second remote terminal.
  • embodiments of the present disclosure provide a relay terminal, including: an acquisition module configured to acquire the first identification information used by the first remote terminal and the second remote terminal in the direct communication interface.
  • the first remote terminal Perform end-to-end communication connection with the second remote terminal through the relay terminal; a determining module used to determine the mapping relationship between the first identification information and the second identification information; a sending module used to send a message to the first remote terminal and the second remote terminal; /or the second remote terminal sends the mapping relationship; wherein the first identification information includes the source address and destination address used by the direct communication interface, or the first identification information includes the source address, destination address and transmission type, and the bits of the second identification information The number is smaller than the number of bits of the first identification information.
  • the acquisition module is specifically configured to: receive the first identification information sent by the first remote terminal and/or the second remote terminal; or, the lower layer of the relay terminal obtains the first identification information from the higher layer of the relay terminal. 1. Identification information.
  • the acquisition module is specifically configured to: receive the first identification information sent by the first remote terminal through the first PC5-RRC signaling; and/or receive the second remote terminal through the second PC5 - the first identification information sent by RRC signaling.
  • the acquisition module is specifically configured for the upper layer of the relay terminal to obtain the first identification information through the PC5-S signaling process, and send the first indication information carrying the first identification information to the lower layer of the relay terminal, by The lower layer of the relay terminal is caused to obtain the first identification information through the first indication information.
  • the acquisition module is specifically configured to: receive second indication information sent by the first remote terminal and/or the second remote terminal, and determine the first identification information and the second identification according to the second indication information.
  • the mapping relationship between the information; or, the mapping relationship between the first identification information and the second identification information is determined based on the first identification information and the second identification information currently available to the relay terminal.
  • the acquisition module is specifically configured to: determine that the currently unoccupied candidate second identification information is the second identification information currently available to the relay terminal; for the first identification information, obtain the second identification information currently available from the relay terminal. Select the second identification information from the second identification information; determine the mapping relationship between the first identification information and the second identification information according to the second identification information.
  • the sending module is specifically configured to: send the mapping relationship to the first remote terminal through the first PC5-RRC signaling between the relay terminal and the first remote terminal; and/or, The mapping relationship is sent to the second remote terminal through the second PC5-RRC signaling between the relay terminal and the second remote terminal.
  • the relay terminal carries the second identification information in the adaptation layer PDU header when transmitting data with the first remote terminal through the direct communication interface; and/or, the relay terminal carries the second identification information through the direct communication interface.
  • the second identification information is carried in the adaptation layer PDU header.
  • the adaptation layer PDU header also includes at least one of the following: bearer identification information of the end-to-end direct communication interface between the first remote terminal and the second remote terminal; or, the first The logical channel identifier LCID of the end-to-end direct communication interface between the remote terminal and the second remote terminal.
  • inventions of the present disclosure provide a remote terminal.
  • the remote terminal is a first remote terminal or a second remote terminal.
  • the first remote terminal and the second remote terminal perform end-to-end communication through a relay terminal.
  • the remote terminal includes: an acquisition module, used to obtain the mapping relationship between the first identification information and the second identification information; a determination module, used to determine the adaptation layer PDU header format according to the mapping relationship; wherein, the first identification The information includes the source address and the destination address used by the direct communication interface, or the first identification information includes the source address, the destination address and the transmission type, and the number of bits of the second identification information is smaller than the number of bits of the first identification information.
  • the acquisition module is specifically configured to: receive the mapping relationship sent by the relay terminal; or, determine the mapping relationship according to the first identification information and the second identification information.
  • the acquisition module is specifically configured to: acquire the first identification information; and send the second indication to the relay terminal through the first PC5-RRC signaling between the first remote terminal and the relay terminal. information and the first identification information, and receive the mapping relationship sent by the relay terminal through the first PC5-RRC signaling; and/or, through the second PC5-RRC signaling between the second remote terminal and the relay terminal, Send the second indication information and the first identification information to the relay terminal, and receive the mapping relationship sent by the relay terminal through the second PC5-RRC signaling.
  • the acquisition module is specifically configured to: obtain the first identification information; determine that the currently unoccupied candidate second identification information is the second identification information currently available to the relay terminal; for the first identification information, Select the second identification information from the second identification information currently available to the relay terminal; determine the mapping relationship between the first identification information and the second identification information according to the second identification information.
  • the acquisition module is specifically configured to: the upper layer of the first remote terminal obtains the first identification information through the PC5-S signaling process, and sends the first identification information to the lower layer of the first remote terminal.
  • the third indication information so that the lower layer of the first remote terminal obtains the first identification information through the third indication information; or, the lower layer of the first remote terminal performs an end-to-end PC5-RRC signaling interaction process to obtain the third indication information.
  • the remote terminal further includes a sending module, configured for the first remote terminal to send the mapping relationship to the relay terminal through the first PC5-RRC signaling; or, for the second remote terminal to send the mapping relationship to the relay terminal through the first PC5-RRC signaling.
  • the end terminal sends the mapping relationship to the relay terminal through the second PC5-RRC signaling; or, for the first remote terminal, the end-to-end third PC5-RRC between the first remote terminal and the second remote terminal signaling to send the mapping relationship to the second remote terminal; or, for the second remote terminal to send the mapping relationship to the first remote terminal through the third PC5-RRC signaling.
  • the second identification information is carried in the adaptation layer PDU header; and/or the remote terminal When transmitting data with the relay terminal through the direct communication interface, the second identification information is carried in the adaptation layer PDU header.
  • the adaptation layer PDU header also includes at least one of the following: bearer identification information of the end-to-end direct communication interface between the first remote terminal and the second remote terminal; or, the first The logical channel identifier LCID of the end-to-end direct communication interface between the remote terminal and the second remote terminal.
  • embodiments of the present disclosure provide a relay terminal, including:
  • Memory used to store computer programs
  • transceiver for sending and receiving data under the control of the processor
  • a processor configured to read the computer program in the memory and perform the following operations: obtain the first identification information used by the first remote terminal and the second remote terminal in the direct communication interface, the first remote terminal and the second remote terminal The terminal performs an end-to-end communication connection through the relay terminal; determines a mapping relationship between the first identification information and the second identification information; and sends the mapping relationship to the first remote terminal and/or the second remote terminal; wherein, the first The identification information includes the source address and the destination address used by the direct communication interface, or the first identification information includes the source address, the destination address and the transmission type, and the number of bits of the second identification information is smaller than the number of bits of the first identification information.
  • obtaining the first identification information used by the first remote terminal and the second remote terminal on the direct communication interface includes: receiving the information sent by the first remote terminal and/or the second remote terminal. first identification information; or, the lower layer of the relay terminal obtains the first identification information from the upper layer of the relay terminal.
  • receiving the first identification information sent by the first remote terminal and/or the second remote terminal includes: receiving the first identification information sent by the first remote terminal through the first PC5-RRC signaling. Identification information; and/or, receiving the first identification information sent by the second remote terminal through the second PC5-RRC signaling.
  • the lower layer of the relay terminal obtains the first identification information from the higher layer of the relay terminal, including: the higher layer of the relay terminal obtains the first identification information through the PC5-S signaling process, and sends the first identification information to the upper layer of the relay terminal.
  • the lower layer sends the first indication information carrying the first identification information, so that the lower layer of the relay terminal obtains the first identification information through the first indication information.
  • determining the mapping relationship between the first identification information and the second identification information includes: receiving second indication information sent by the first remote terminal and/or the second remote terminal, and determining a mapping relationship between the first identification information and the second identification information according to the second indication information; or, according to the first identification information and Relay the second identification information currently available to the terminal to determine the mapping relationship between the first identification information and the second identification information.
  • determining the mapping relationship between the first identification information and the second identification information currently available to the relay terminal according to the first identification information and the second identification information currently available to the relay terminal includes: determining a currently unoccupied candidate The second identification information is the second identification information currently available to the relay terminal; for the first identification information, select the second identification information from the second identification information currently available to the relay terminal; according to the second identification information, determine the first identification information and Mapping relationship of the second identification information.
  • sending the mapping relationship between the first identification information and the second identification information to the first remote terminal and/or the second remote terminal includes: through the relay terminal and the first remote terminal. Send the mapping relationship to the first remote terminal through the first PC5-RRC signaling between the relay terminal and the second remote terminal; and/or send the mapping relationship to the second remote terminal through the second PC5-RRC signaling between the relay terminal and the second remote terminal.
  • the terminal sends the mapping relationship.
  • the relay terminal when the relay terminal performs data transmission with the first remote terminal through the direct communication interface, the relay terminal carries the second identification information in the PDU header of the adaptation layer protocol unit; and/or, the relay terminal When performing data transmission with the second remote terminal through the direct communication interface, the second identification information is carried in the adaptation layer PDU header.
  • the adaptation layer PDU header also includes at least one of the following: bearer identification information of the end-to-end direct communication interface between the first remote terminal and the second remote terminal; or, the first The logical channel identifier LCID of the end-to-end direct communication interface between the remote terminal and the second remote terminal.
  • inventions of the present disclosure provide a remote terminal.
  • the remote terminal is a first remote terminal or a second remote terminal.
  • the first remote terminal communicates end-to-end with the second remote terminal through a relay terminal.
  • Communication connection, remote terminal includes:
  • Memory used to store computer programs
  • transceiver for sending and receiving data under the control of the processor
  • a processor configured to read the computer program in the memory and perform the following operations: obtain the mapping relationship between the first identification information and the second identification information; determine the adaptation layer PDU header format according to the mapping relationship; wherein the first identification information includes The source address and destination address used by the direct communication interface, or the first identification information includes the source address, the destination address and the transmission type, and the number of bits of the second identification information is smaller than the number of bits of the first identification information.
  • obtaining the mapping relationship between the first identification information and the second identification information includes: receiving the mapping relationship sent by the relay terminal; or determining the mapping relationship according to the first identification information and the second identification information.
  • receiving the mapping relationship sent by the relay terminal includes: obtaining the first identification information; and sending the message to the relay through the first PC5-RRC signaling between the first remote terminal and the relay terminal.
  • the terminal sends the second indication information and the first identification information, and receives the mapping relationship sent by the relay terminal through the first PC5-RRC signaling; and/or, through the second PC5 between the second remote terminal and the relay terminal -RRC signaling, sending the second indication information and the first identification information to the relay terminal, and receiving the mapping relationship sent by the relay terminal through the second PC5-RRC signaling.
  • determining the mapping relationship according to the first identification information and the second identification information includes: obtaining the first identification information; determining that the currently unoccupied candidate second identification information is currently available to the relay terminal. second identification information; for the first identification information, select the second identification information from the second identification information currently available to the relay terminal; and determine the mapping relationship between the first identification information and the second identification information according to the second identification information.
  • obtaining the first identification information includes: the upper layer of the first remote terminal obtains the first identification information through the PC5-S signaling process, and sends the first identification information to the lower layer of the first remote terminal carrying the first identification information.
  • the third indication information of the identification information so that the lower layer of the first remote terminal obtains the first identification information through the third indication information; or, the end-to-end PC5-RRC signaling interaction process is performed through the lower layer of the first remote terminal, Obtain first identification information.
  • the processor is also configured to perform at least one of the following: the first remote terminal sends the mapping relationship to the relay terminal through the first PC5-RRC signaling; or the second remote terminal sends the mapping relationship through the first PC5-RRC signaling;
  • the second PC5-RRC signaling sends the mapping relationship to the relay terminal; or the first remote terminal sends the mapping relationship to the relay terminal through the end-to-end third PC5-RRC signaling between the first remote terminal and the second remote terminal.
  • the second remote terminal sends the mapping relationship; or, the second remote terminal sends the mapping relationship to the first remote terminal through the third PC5-RRC signaling.
  • the second identification information is carried in the adaptation layer PDU header; and/or the remote terminal When transmitting data with the relay terminal through the direct communication interface, the second identification information is carried in the adaptation layer PDU header.
  • the adaptation layer PDU header further includes at least one of the following: bearer identification information of the end-to-end direct communication interface between the first remote terminal and the second remote terminal; The logical channel identifier LCID of the end-to-end direct communication interface between the end terminal and the second remote terminal.
  • embodiments of the present disclosure provide a processor-readable storage medium.
  • the processor-readable storage medium stores a computer program.
  • the computer program is used to cause the processor to execute any one of the first aspect and/or the second aspect. information processing methods.
  • embodiments of the present disclosure provide a computer program product, including: a computer program.
  • a computer program When the computer program is executed by a processor, the information processing method in any one of the first and/or second aspects is implemented.
  • the relay terminal or the remote terminal obtains the first identification information used by the first remote terminal and the second remote terminal in the direct communication interface, and the first remote terminal
  • the terminal and the second remote terminal perform end-to-end communication connections through the relay terminal; determine a mapping relationship between the first identification information and the second identification information; and send the mapping to the first remote terminal and/or the second remote terminal. relation.
  • Figure 1 is a schematic diagram of an application scenario according to an embodiment of the present disclosure
  • Figure 2 is a schematic diagram 1 of signaling interaction of the information processing method provided by an embodiment of the present disclosure
  • Figure 3a is a schematic diagram 1 of the adaptation layer PDU header provided by an embodiment of the present disclosure.
  • Figure 3b is a schematic diagram 2 of the adaptation layer PDU header provided by an embodiment of the present disclosure.
  • Figure 4 is a second schematic diagram of signaling interaction of the information processing method provided by an embodiment of the present disclosure.
  • Figure 5 is a schematic diagram three of the signaling interaction of the information processing method provided by the embodiment of the present disclosure.
  • Figure 6 is a schematic diagram 4 of signaling interaction of the information processing method provided by an embodiment of the present disclosure.
  • Figure 7 is a schematic structural diagram of a relay terminal provided by an embodiment of the present disclosure.
  • Figure 8 is a schematic structural diagram of a remote terminal provided by an embodiment of the present disclosure.
  • Figure 9 is a schematic structural diagram 2 of a relay terminal provided by an embodiment of the present disclosure.
  • Figure 10 is a second structural schematic diagram of a remote terminal provided by an embodiment of the present disclosure.
  • the relay UE-to-Network Relay from the terminal to the network equipment and the relay UE-to-UE Relay from the terminal to the terminal are introduced.
  • the relay terminal (Relay UE) is a terminal within the network coverage, and the remote terminal can be located within the network coverage or outside the network coverage.
  • the remote terminal can access the network device through the relay terminal; for UE-to-UE Relay, the remote terminal can access another remote terminal through the relay terminal.
  • the bearer between two remote terminals is called end-to-end bearer.
  • end-to-end bearer bears the underlying transmission, two PC5RLC channels (i.e. two remote PC5RLC channel) between terminal and relay terminal.
  • FIG 1 is a schematic diagram of an application scenario according to an embodiment of the present disclosure. It should be noted that this scenario is a UE-to-UE Relay communication architecture, as shown in Figure 1. This scenario includes: a first remote terminal 101, a second remote terminal 102 and a relay terminal 103.
  • the interfaces used between the relay terminal 103 and the first remote terminal 101, and the relay terminal 103 and the second remote terminal 102 are all direct communications, where direct communication communication refers to A method in which adjacent terminals can transmit data within a short distance through a direct communication link (also called Sidelink or PC5).
  • the wireless interface corresponding to the Sidelink link is called a direct communication interface (also called Sidelink interface or PC5 interface). .
  • the direct communication interface identifies the communication peer through a combination of source address, destination address and transmission type.
  • the size of the source address is 24 bits
  • the size of the destination address is 24 bits
  • the transmission method (for example, multicast, unicast, broadcast, etc.) needs to occupy at least 2 bits.
  • the identification information requires at least 50 bits. Considering the whole byte problem, at least 7 bytes of overhead are required.
  • the adaptation layer needs to do mapping between two direct communication links, and both need to use the identification information of the direct communication interface carried in the adaptation layer. If a 50-bit direct communication interface identification is used, Information, the 7-byte overhead will reduce the resource utilization during the end-to-end communication process, thereby reducing the data transmission efficiency, which is basically unacceptable in this communication architecture.
  • a relay terminal or a remote terminal determines the distance between two remote terminals that perform end-to-end data transmission through the relay terminal.
  • the first identification information is used, and then based on the first identification information, the second identification information whose number of bits is smaller than the number of bits of the first identification information is determined, and the mapping relationship between the first identification information and the second identification information is sent to the two remote ends.
  • the terminal enables two remote terminals to carry the second identification information in the adaptation layer when performing end-to-end communication according to the second identification information, so as to save the header overhead of the adaptation layer and thereby improve resources in the end-to-end communication process. Utilization to ensure end-to-end data transmission efficiency.
  • first remote terminal 101, second remote terminal 102 and relay terminal 103 may all be devices that provide voice and/or data connectivity to users, or handheld devices with wireless connection functions. , or other processing equipment connected to a wireless modem, etc.
  • the names of the above-mentioned terminals may be different.
  • the above-mentioned terminals may be called User Equipment (UE), and the above-mentioned terminals may also be wireless terminals, where the wireless terminals may Communicates with one or more core networks (Core Network, CN) via a Radio Access Network (RAN).
  • the wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a mobile phone with
  • the computer of the terminal for example, may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges speech and/or data with the radio access network.
  • Wireless terminals may also be called systems, subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, access points, Remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), and user device (user device) are not limited in the embodiments of the present disclosure.
  • GSM global Mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • general packet radio service general packet radio service
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS advanced long term evolution
  • WiMAX microwave access
  • 5G New Radio (NR) system etc.
  • EPS Evolved Packet System
  • 5GS 5G system
  • FIG. 1 is schematic, and the above scenario may also include other network devices, such as wireless repeater devices and wireless backhaul devices, which are not shown in FIG. 1 .
  • FIG. 2 is a schematic diagram 1 of signaling interaction of an information processing method provided by an embodiment of the present disclosure. As shown in Figure 2, the information processing method may include the following steps:
  • the relay terminal obtains the first identification information used by the first remote terminal and the second remote terminal in the direct communication interface.
  • the first identification information includes the source address and the destination address used by the direct communication interface; or the first identification information includes the source address, the destination address and the transmission type.
  • the first remote terminal and the second remote terminal may establish an end-to-end connection through the relay terminal.
  • the first remote terminal may first send a discovery message.
  • the relay terminal After the relay terminal receives the discovery message sent by the first remote terminal, it adds the identification information of the relay terminal to the discovery message to obtain the target discovery message. , and then forward the target discovery message.
  • the second remote terminal receives the target discovery message sent by the relay terminal, it determines the relay terminal through the identification information in the target discovery message, and establishes an end-to-end connection with the first remote terminal through the relay terminal.
  • Radio Resource Control (RRC) connection Radio Resource Control
  • the relay terminal determines the mapping relationship between the first identification information and the second identification information.
  • the number of bits of the second identification information is smaller than the number of bits of the first identification information.
  • the method for determining the second identification information will be shown in subsequent embodiments.
  • the relay terminal sends the mapping relationship between the first identification information and the second identification information to the first remote terminal.
  • the relay terminal sends the mapping relationship between the first identification information and the second identification information to the second remote terminal.
  • the first remote terminal determines the header format of the adaptation layer protocol data unit (Protocol Data Unit, PDU) according to the mapping relationship.
  • PDU Protocol Data Unit
  • the first remote terminal determines the adaptation layer PDU header format according to the mapping relationship.
  • the embodiment of the present disclosure does not specifically limit the execution order of the above-mentioned steps S203a and S203b, as well as the execution order of the above-mentioned steps S204a and S204b.
  • the adaptation layer carries the second identification information, the header overhead of the adaptation layer can be saved, thereby improving the resource utilization of the remote terminal when transmitting data through the U2U relay, and ensuring end-to-end data transmission efficiency.
  • the first remote terminal, the second remote terminal and the relay terminal transmits data through the direct communication interface in the protocol unit header (Packet Data Unit-header) of the adaptation layer.
  • PDU-header carries the second identification information.
  • the data receiving end including relay equipment and remote terminals
  • receives the adaptation layer PDU header it can determine the source address and target address in the first identification information based on the second identification information and the mapping relationship. and transmission type and other information, so as to receive or transfer data according to the identification information and realize end-to-end data transmission.
  • adaptation layer PDU header format used by the remote terminal for end-to-end communication is exemplarily described with reference to Figures 3a and 3b.
  • FIG. 3a is a schematic diagram of an adaptation layer PDU header provided by an embodiment of the present disclosure.
  • the header of the protocol unit includes: second identification information, and an end-to-end bearer identification (Bearer ID) between the first remote terminal and the second remote terminal.
  • Bearer ID an end-to-end bearer identification
  • FIG. 3b is a schematic diagram 2 of an adaptation layer PDU header provided by an embodiment of the present disclosure.
  • the PDU header includes: second identification information, and a link between the first remote terminal and the second remote terminal.
  • the end-to-end logical channel identifier (LCID) between the PDU header includes: second identification information, and a link between the first remote terminal and the second remote terminal.
  • the end-to-end logical channel identifier (LCID) between LCID logical channel identifier
  • the second identification information is 8bit
  • the Bearer ID is 5bit
  • the adaptation layer PDU header occupies 2 bytes
  • the second identification information is 8bit
  • the LCID is 5bit
  • the adaptation layer PDU header occupies 2 bytes.
  • the adaptation layer PDU header occupies 2 bytes. Therefore, compared with the existing method, during the end-to-end communication process, when the adaptation layer carries the second identification information, the header of the adaptation layer is greatly saved. overhead, thereby improving resource utilization in the end-to-end communication process and ensuring end-to-end data transmission efficiency.
  • the first identification information can be obtained through the relay terminal, and the relay terminal obtains the mapping relationship according to the first identification information.
  • FIG. 4 is a second schematic diagram of signaling interaction of an information processing method provided by an embodiment of the present disclosure. As shown in Figure 4, the information processing method may include the following steps:
  • the lower layer of the relay terminal obtains the first identification information from the higher layer of the relay terminal.
  • the upper layer of the relay terminal obtains the first identification information through the PC5-S signaling process, and sends the first indication information carrying the first identification information to the lower layer of the relay terminal, so that the lower layer of the relay terminal passes the first indication.
  • the information obtains the first identification information.
  • the embodiments of the present disclosure do not specifically limit the specific types of high-level and low-level layers.
  • the upper layer can be the PC5-S protocol layer
  • the lower layer can be the PC5-RRC layer. That is, a possible example of the embodiment of the present disclosure is: after the PC5-S protocol layer of the relay terminal obtains the first identification information used between the first remote terminal and the second remote terminal, it notifies the remote terminal PC5-RRC layer.
  • the relay terminal determines the mapping relationship between the first identification information and the second identification information based on the first identification information and the second identification information currently available to the relay terminal.
  • the relay terminal when the relay terminal determines the mapping relationship through the above step S402, the relay terminal specifically includes the following steps:
  • an available second identification information may be randomly selected as the second identification information.
  • the relay terminal receives a piece of first identification information.
  • the relay terminal sends the mapping relationship between the first identification information and the second identification information to the first remote terminal.
  • the relay terminal may send the mapping relationship to the first remote terminal through the first PC5-RRC signaling between the relay terminal and the first remote terminal.
  • the relay terminal sends the mapping relationship between the first identification information and the second identification information to the second remote terminal.
  • the relay terminal may send the mapping relationship to the second remote terminal through the second PC5-RRC signaling between the relay terminal and the second remote terminal.
  • the first remote terminal determines the adaptation layer PDU header format according to the mapping relationship.
  • the second remote terminal determines the adaptation layer PDU header format according to the mapping relationship.
  • At least one of the first remote terminal, the second remote terminal and the relay terminal carries the second identification information in the adaptation layer PDU header when transmitting data through the direct communication interface.
  • the embodiment of the present disclosure does not limit the execution order of the above-mentioned steps S403a and S403b, as well as the execution order of the above-mentioned steps S404a and S404b.
  • Adaptation layer portability can save the header overhead of the adaptation layer, thereby improving resource utilization when the remote terminal transmits data through the relay terminal, and ensuring end-to-end data transmission efficiency.
  • the relay terminal obtains the first identification information, it obtains the first identification information from the upper layer of the relay terminal through the lower layer of the relay terminal. This process does not require the intervention of the remote terminal, which can reduce signaling interactions and reduce the complexity of the present disclosure. Implementation complexity.
  • the first identification information can also be obtained through the remote terminal, and the relay terminal obtains the mapping relationship according to the first identification information.
  • FIG. 5 is a second schematic diagram of signaling interaction of the information processing method provided by an embodiment of the present disclosure. As shown in Figure 5, the information processing method may include the following steps:
  • the remote terminal obtains the first identification information.
  • the remote terminal when the remote terminal (the first remote terminal or the second remote terminal) obtains the first identification information, it includes but is not limited to the following two implementation methods:
  • the upper layer of the remote terminal obtains the first identification information through the PC5-S signaling process, and sends the third indication information carrying the first identification information to the lower layer of the remote terminal, so that the lower layer of the remote terminal passes the third
  • the instruction information obtains the first identification information.
  • the embodiments of the present disclosure do not limit the specific types of the upper layer and the lower layer of the remote terminal.
  • the upper layer of the remote terminal can be the PC5-S protocol layer
  • the lower layer of the remote terminal can be PC5-RRC. layer. That is, in an example of the present disclosure, after the remote terminal determines the first identification information used between the first remote terminal and the second remote terminal, the remote terminal transmits the information to the remote terminal through the high-level PC5-S protocol layer of the remote terminal.
  • the PC5-RRC layer of the end terminal sends the third indication information carrying the first identification information, so that the PC5-RRC layer of the remote terminal obtains the first identification information through the third indication information.
  • the remote terminal sends the first identification information to the relay terminal.
  • the first remote terminal sends the second indication information and the first identification information to the relay terminal through the first PC5-RRC signaling between the first remote terminal and the relay terminal.
  • the remote terminal in this embodiment may be the first remote terminal and/or the second remote terminal.
  • the first remote terminal is taken as an example.
  • the first identification information can also be obtained through the second remote terminal, and the second remote terminal sends the second PC5-RRC signaling to the relay terminal through the second PC5-RRC signaling between the second remote terminal and the relay terminal.
  • two indication information and first identification information can also be obtained through the second remote terminal, and the second remote terminal sends the second PC5-RRC signaling to the relay terminal through the second PC5-RRC signaling between the second remote terminal and the relay terminal.
  • the relay terminal determines the mapping relationship between the first identification information and the second identification information based on the first identification information and the second identification information currently available to the relay terminal;
  • step S503 may include the following steps:
  • step S503 is similar to the method and principle of step S402 in FIG. 4 , and will not be described again here.
  • the relay terminal sends the mapping relationship between the first identification information and the second identification information to the first remote terminal.
  • the relay terminal sends the mapping relationship to the first remote terminal through the first PC5-RRC signaling between the relay terminal and the first remote terminal;
  • the relay terminal sends the mapping relationship between the first identification information and the second identification information to the second remote terminal.
  • the relay terminal sends the mapping relationship to the second remote terminal through the second PC5-RRC signaling between the relay terminal and the second remote terminal.
  • the first remote terminal determines the adaptation layer PDU header format according to the mapping relationship.
  • the second remote terminal determines the adaptation layer PDU header format according to the mapping relationship.
  • At least one of the first remote terminal, the second remote terminal and the relay terminal carries the second identification information in the adaptation layer PDU header when transmitting data through the direct communication interface.
  • the embodiment of the present disclosure does not specifically limit the execution order of the above-mentioned steps S504a and S504b, as well as the execution order of the above-mentioned steps S505a and S505b.
  • the adaptation layer carries the second identification information, the header overhead of the adaptation layer can be saved, thereby improving resource utilization when the remote terminal transmits data through the relay terminal, and ensuring end-to-end data transmission efficiency.
  • the first identification information is obtained through the remote terminal, and the mapping relationship is determined based on the first identification information through the relay terminal, so that this solution can be flexibly applied to various communication scenarios.
  • the first identification information can also be obtained through the remote terminal; the mapping relationship can be obtained according to the first identification information.
  • FIG. 6 is a third schematic diagram of signaling interaction of the information processing method provided by an embodiment of the present disclosure. As shown in Figure 6, the information processing method may include the following steps:
  • the remote terminal obtains the first identification information.
  • the remote terminal when the remote terminal (the first remote terminal or the second remote terminal) obtains the first identification information, it includes but is not limited to the following two implementation methods:
  • the upper layer of the first remote terminal obtains the first identification information through the PC5-S signaling process, and sends the third indication information carrying the first identification information to the lower layer of the first remote terminal, so that the first remote terminal The lower level of the terminal passes through the The third instruction information obtains the first identification information;
  • step S601 is similar to the method and principle of step S501 in Figure 5 , and will not be described again here.
  • the remote terminal determines the mapping relationship between the first identification information and the second identification information based on the first identification information and the second identification information currently available to the relay terminal.
  • the remote terminal when determining the mapping relationship, specifically includes the following steps:
  • the remote terminal sends the mapping relationship between the first identification information and the second identification information to the relay terminal.
  • the first remote terminal may send the mapping relationship to the relay terminal through the first PC5-RRC signaling between the relay terminal and the first remote terminal.
  • the second remote terminal may send the mapping relationship to the relay terminal through the second PC5-RRC signaling between the relay terminal and the second remote terminal.
  • the remote terminal sends the mapping relationship between the first identification information and the second identification information to another remote terminal.
  • the remote terminal is a first remote terminal
  • the first remote terminal sends a signal to the second remote terminal through the third PC5-RRC signaling between the first remote terminal and the second remote terminal.
  • Send mapping relationship if the remote terminal is a second remote terminal, the second remote terminal can send a message to the first remote terminal through the third PC5-RRC signaling between the first remote terminal and the second remote terminal. Send mapping relationship.
  • steps S601 to S602, as well as S603a and S603b in the embodiment shown in FIG. 6 are all illustrated by taking the remote terminal as the first remote terminal as an example, but this is not a limitation in practical applications.
  • the first remote terminal determines the adaptation layer PDU header format according to the mapping relationship.
  • the second remote terminal determines the adaptation layer PDU header format according to the mapping relationship.
  • At least one of the first remote terminal, the second remote terminal and the relay terminal carries the second identification information in the adaptation layer PDU header when transmitting data through the direct communication interface.
  • the embodiment of the present disclosure does not limit the execution order of the above-mentioned steps S603a and S603b, as well as the execution order of the above-mentioned steps S604a and S604b.
  • the adaptation layer carries the second identification information
  • the header overhead of the adaptation layer can be saved, thereby improving resource utilization when the remote terminal transmits data through the relay terminal, and ensuring end-to-end data transmission efficiency.
  • obtain the first identification information and the remote terminal determines the mapping relationship based on the first identification information, so that this solution can be flexibly applied to various communication scenarios, for example, in a scenario where the relay terminal cannot obtain the first identification information and cannot obtain the mapping relationship.
  • obtaining the first identification information through the remote terminal obtaining the mapping relationship according to the first identification information, which can also achieve the purpose of reducing the header overhead of the adaptation layer in the present disclosure.
  • FIG. 7 is a schematic structural diagram of a relay terminal provided by an embodiment of the present disclosure. As shown in Figure 7, the relay terminal 700 includes:
  • Obtaining module 701 is used to obtain the first identification information used by the first remote terminal and the second remote terminal in the direct communication interface.
  • the first remote terminal and the second remote terminal perform end-to-end communication connections through the relay terminal.
  • the acquisition module 701 is specifically configured to: receive the first identification information sent by the first remote terminal and/or the second remote terminal; or, the lower layer of the relay terminal obtains it from the higher layer of the relay terminal. First identification information.
  • the acquisition module 701 is specifically configured to: receive the first identification information sent by the first remote terminal through the first PC5-RRC signaling; and/or receive the second remote terminal through the second The first identification information sent by PC5-RRC signaling.
  • the acquisition module 701 is specifically configured for the upper layer of the relay terminal to obtain the first identification information through the PC5-S signaling process, and send the first indication information carrying the first identification information to the lower layer of the relay terminal. , so that the lower layer of the relay terminal obtains the first identification information through the first indication information.
  • the acquisition module 701 is specifically configured to: receive second indication information sent by the first remote terminal and/or the second remote terminal, and determine the first identification information and the second indication information according to the second indication information.
  • the mapping relationship between the identification information; or, the mapping relationship between the first identification information and the second identification information is determined based on the first identification information and the second identification information currently available to the relay terminal.
  • the acquisition module 701 is specifically configured to: determine that the currently unoccupied candidate second identification information is the second identification information currently available to the relay terminal; for the first identification information, obtain the second identification information currently available from the relay terminal. Select the second identification information from the second identification information; determine the mapping relationship between the first identification information and the second identification information according to the second identification information.
  • the sending module 703 is specifically configured to: send the mapping relationship to the first remote terminal through the first PC5-RRC signaling between the relay terminal and the first remote terminal; and/or , sending the mapping relationship to the second remote terminal through the second PC5-RRC signaling between the relay terminal and the second remote terminal.
  • the relay terminal carries the second identification information in the adaptation layer PDU header when transmitting data with the first remote terminal through the direct communication interface; and/or, the relay terminal carries the second identification information through the direct communication interface.
  • the second identification information is carried in the adaptation layer PDU header.
  • the adaptation layer PDU header also includes at least one of the following: bearer identification information of the end-to-end direct communication interface between the first remote terminal and the second remote terminal; or, the first The logical channel identifier LCID of the end-to-end direct communication interface between the remote terminal and the second remote terminal.
  • the remote terminal is a first remote terminal or a second remote terminal.
  • the first remote terminal and the second remote terminal pass through a relay terminal. end-to-end communication connection.
  • Figure 8 is a schematic structural diagram of a remote terminal provided by an embodiment of the present disclosure.
  • the remote terminal 800 includes: an acquisition module 801, used to obtain the mapping relationship between the first identification information and the second identification information; a determination module 802, used to determine the adaptation layer PDU header format according to the mapping relationship.
  • the first identification information includes the source address and the destination address used by the direct communication interface, or the first identification information includes the source address, the destination address and the transmission type, and the number of bits of the second identification information is smaller than the number of bits of the first identification information.
  • the acquisition module 801 is specifically configured to: receive the mapping relationship sent by the relay terminal; or, determine the mapping relationship according to the first identification information and the second identification information.
  • the obtaining module 801 is specifically configured to: obtain the first identification information; and send the second identification information to the relay terminal through the first PC5-RRC signaling between the first remote terminal and the relay terminal. indication information and first identification information, and receive the mapping relationship sent by the relay terminal through the first PC5-RRC signaling; and/or, through the second PC5-RRC signaling between the second remote terminal and the relay terminal , sending the second indication information and the first identification information to the relay terminal, and receiving the mapping relationship sent by the relay terminal through the second PC5-RRC signaling.
  • the acquisition module 801 is specifically configured to: acquire first identification information; determine that the currently unoccupied candidate second identification information is the second identification information currently available to the relay terminal; target the first identification information , selected from the second identification information currently available to the relay terminal
  • second identification information determine the mapping relationship between the first identification information and the second identification information according to the second identification information.
  • the acquisition module 801 is specifically configured to: the upper layer of the first remote terminal obtains the first identification information through the PC5-S signaling process, and sends the first identification information to the lower layer of the first remote terminal.
  • the third indication information of the information so that the lower layer of the first remote terminal obtains the first identification information through the third indication information; or, the lower layer of the first remote terminal performs an end-to-end PC5-RRC signaling interaction process to obtain First identification information.
  • the remote terminal 800 further includes a sending module 803, configured for the first remote terminal to send the mapping relationship to the relay terminal through the first PC5-RRC signaling; or, for The second remote terminal sends the mapping relationship to the relay terminal through the second PC5-RRC signaling; or, for the first remote terminal, the third PC5 is used end-to-end between the first remote terminal and the second remote terminal.
  • a sending module 803 configured for the first remote terminal to send the mapping relationship to the relay terminal through the first PC5-RRC signaling; or, for The second remote terminal sends the mapping relationship to the relay terminal through the second PC5-RRC signaling; or, for the first remote terminal, the third PC5 is used end-to-end between the first remote terminal and the second remote terminal.
  • the second identification information is carried in the adaptation layer PDU header; and/or the remote terminal When transmitting data with the relay terminal through the direct communication interface, the second identification information is carried in the adaptation layer PDU header.
  • the adaptation layer PDU header also includes at least one of the following: bearer identification information through the end-to-end direct communication interface between the first remote terminal and the second remote terminal; or, through Logical channel identifier LCID of the end-to-end direct communication interface between the first remote terminal and the second remote terminal.
  • the above-mentioned remote terminal 800 provided by the present disclosure can correspondingly implement all the method steps implemented by the first remote terminal or the second remote terminal in the above-mentioned method embodiments, and can achieve the same technology. Effects: The parts and beneficial effects in this embodiment that are the same as those in the method embodiment will not be described in detail here.
  • Figure 9 is a schematic second structural diagram of a relay terminal provided by an embodiment of the present disclosure. As shown in Figure 9, the relay finally includes: a transceiver 901, a processor 902 and a memory 903.
  • Memory 903 used to store computer programs
  • Transceiver 901 used to send and receive data under the control of processor 902;
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 902 and various circuits of the memory represented by memory 903 are linked together.
  • the bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein.
  • the bus interface provides the interface.
  • the transceiver 901 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables and other transmission media.
  • the processor 902 is responsible for managing the bus architecture and general processing, and the memory 903 can store data used by the processor 902 when performing operations.
  • the processor 902 is responsible for managing the bus architecture and general processing, and the memory 903 can store data used by the processor 902 when performing operations.
  • the processor 902 can be a central processing unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable gate array.
  • Programmable logic device Complex Programmable Logic Device, CPLD
  • the processor can also adopt a multi-core architecture.
  • the processor 902 is configured to execute any terminal access method related to the target relay terminal provided by the embodiment of the present disclosure according to the obtained executable instructions by calling the computer program stored in the memory 903.
  • the processor 902 and the memory 903 may also be physically separated.
  • the processor 902 is used to read the computer program in the memory 903 and perform the following operations: obtain the first identification information used by the first remote terminal and the second remote terminal in the direct communication interface, the first remote terminal and the second remote terminal.
  • the second remote terminal performs an end-to-end communication connection through the relay terminal; determines the mapping relationship between the first identification information and the second identification information; sends the mapping relationship to the first remote terminal and/or the second remote terminal;
  • the first identification information includes the source address and destination address used by the direct communication interface, or the first identification information includes the source address, destination address and so on.
  • the number of bits of the second identification information is smaller than the number of bits of the first identification information.
  • obtaining the first identification information used by the first remote terminal and the second remote terminal on the direct communication interface includes: receiving the information sent by the first remote terminal and/or the second remote terminal. first identification information; or, the lower layer of the relay terminal obtains the first identification information from the upper layer of the relay terminal.
  • receiving the first identification information sent by the first remote terminal and/or the second remote terminal includes: receiving the first identification information sent by the first remote terminal through the first PC5-RRC signaling. Identification information; and/or, receiving the first identification information sent by the second remote terminal through the second PC5-RRC signaling.
  • the lower layer of the relay terminal obtains the first identification information from the higher layer of the relay terminal, including: the higher layer of the relay terminal obtains the first identification information through the PC5-S signaling process, and sends the first identification information to the upper layer of the relay terminal.
  • the lower layer sends the first indication information carrying the first identification information, so that the lower layer of the relay terminal obtains the first identification information through the first indication information.
  • determining the mapping relationship between the first identification information and the second identification information includes: receiving second indication information sent by the first remote terminal and/or the second remote terminal, according to the first remote terminal.
  • the second indication information determines the mapping relationship between the first identification information and the second identification information; or determines the mapping relationship between the first identification information and the second identification information based on the first identification information and the second identification information currently available to the relay terminal.
  • determining the mapping relationship between the first identification information and the second identification information currently available to the relay terminal according to the first identification information and the second identification information currently available to the relay terminal includes: determining a currently unoccupied candidate The second identification information is the second identification information currently available to the relay terminal;
  • For the first identification information select from the second identification information currently available to the relay terminal.
  • second identification information determine the mapping relationship between the first identification information and the second identification information according to the second identification information.
  • sending the mapping relationship between the first identification information and the second identification information to the first remote terminal and/or the second remote terminal includes: through the relay terminal and the first remote terminal. Send the mapping relationship to the first remote terminal through the first PC5-RRC signaling between the relay terminal and the second remote terminal; and/or send the mapping relationship to the second remote terminal through the second PC5-RRC signaling between the relay terminal and the second remote terminal.
  • the terminal sends the mapping relationship.
  • the relay terminal carries the second identification information in the adaptation layer PDU header when transmitting data with the first remote terminal through the direct communication interface; and/or, the relay terminal carries the second identification information through the direct communication interface.
  • the second identification information is carried in the adaptation layer PDU header.
  • the adaptation layer PDU header also includes at least one of the following: bearer identification information through the end-to-end direct communication interface between the first remote terminal and the second remote terminal; or, through Logical channel identifier LCID of the end-to-end direct communication interface between the first remote terminal and the second remote terminal.
  • the above-mentioned relay terminal provided by the present disclosure can implement all the method steps implemented on the relay terminal side in the above-mentioned method embodiments, and can achieve the same technical effect. No further explanation will be given here. The same parts and beneficial effects as those in the method embodiment will be described in detail.
  • Figure 10 is a second structural schematic diagram of a remote terminal provided by an embodiment of the present disclosure. As shown in Figure 10, the remote terminal It is a first remote terminal or a second remote terminal. The first remote terminal and the second remote terminal perform end-to-end communication connection through the relay terminal.
  • the remote terminal includes: a transceiver 1001, a processor 1002 and a memory. 1003.
  • Memory 1003 used to store computer programs
  • Transceiver 100 used to send and receive data under the control of processor 1002;
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1002 and various circuits of the memory represented by memory 1003 are linked together.
  • the bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are all well known in the art and therefore will not be described further herein.
  • the bus interface provides the interface.
  • the transceiver 1001 may be a plurality of components, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, and other transmission media.
  • the processor 1002 is responsible for managing the bus architecture and general processing, and the memory 1003 can store data used by the processor 1002 when performing operations.
  • the processor 1002 is responsible for managing the bus architecture and general processing, and the memory 1003 can store data used by the processor 1002 when performing operations.
  • the processor 1002 can be a central processing unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable gate array.
  • Programmable logic device Complex Programmable Logic Device, CPLD
  • the processor can also adopt a multi-core architecture.
  • the processor 1002 is configured to execute any terminal access method related to the target relay terminal provided by the embodiment of the present disclosure according to the obtained executable instructions by calling the computer program stored in the memory 1003.
  • the processor 1002 and the memory 1003 may also be physically separated.
  • the processor 1002 is configured to read the computer program in the memory 1003 and perform the following operations: obtain the mapping relationship between the first identification information and the second identification information; determine the adaptation layer PDU header format according to the mapping relationship; wherein, the One identification information includes the source address and the destination address used by the direct communication interface, or the first identification information includes the source address, the destination address and the transmission type, and the number of bits of the second identification information is smaller than the number of bits of the first identification information.
  • obtaining the mapping relationship between the first identification information and the second identification information includes: receiving the mapping relationship sent by the relay terminal; or determining the mapping relationship according to the first identification information and the second identification information.
  • receiving the mapping relationship sent by the relay terminal includes: obtaining the first identification information; and sending the message to the relay through the first PC5-RRC signaling between the first remote terminal and the relay terminal.
  • the terminal sends the second indication information and the first identification information, and receives the mapping relationship sent by the relay terminal through the first PC5-RRC signaling; and/or, through the second PC5 between the second remote terminal and the relay terminal -RRC signaling, sending the second indication information and the first identification information to the relay terminal, and receiving the mapping relationship sent by the relay terminal through the second PC5-RRC signaling.
  • the mapping relationship is determined based on the first identification information and the second identification information.
  • the method includes: obtaining the first identification information; determining that the currently unoccupied candidate second identification information is the second identification information currently available to the relay terminal; and, for the first identification information, selecting the second identification information from the second identification information currently available to the relay terminal. Two identification information; according to the second identification information, determine the mapping relationship between the first identification information and the second identification information.
  • obtaining the first identification information includes: the upper layer of the first remote terminal obtains the first identification information through the PC5-S signaling process, and sends the first identification information to the lower layer of the first remote terminal carrying the first identification information.
  • the third indication information of the identification information so that the lower layer of the first remote terminal obtains the first identification information through the third indication information; or, the end-to-end PC5-RRC signaling interaction process is performed through the lower layer of the first remote terminal, Obtain first identification information.
  • the processor is also configured to perform at least one of the following: the first remote terminal sends the mapping relationship to the relay terminal through the first PC5-RRC signaling; or the second remote terminal sends the mapping relationship through the first PC5-RRC signaling;
  • the second PC5-RRC signaling sends the mapping relationship to the relay terminal; or the first remote terminal sends the mapping relationship to the relay terminal through the end-to-end third PC5-RRC signaling between the first remote terminal and the second remote terminal.
  • the second remote terminal sends the mapping relationship; or, the second remote terminal sends the mapping relationship to the first remote terminal through the third PC5-RRC signaling.
  • the second identification information is carried in the adaptation layer PDU header; and/or the remote terminal When transmitting data with the relay terminal through the direct communication interface, the second identification information is carried in the adaptation layer PDU header.
  • the adaptation layer PDU header of the relay terminal includes second identification information, and at least one of the following: through end-to-end direct communication between the first remote terminal and the second remote terminal The bearer identification information of the interface; or, the logical channel identification LCID of the end-to-end direct communication interface between the first remote terminal and the second remote terminal.
  • the above-mentioned remote terminal provided by the present disclosure can implement all the method steps implemented by the first remote terminal or the second remote terminal in the above-mentioned method embodiments, and can achieve the same technical effect.
  • the parts and beneficial effects in this embodiment that are the same as those in the method embodiment will not be described in detail.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above integrated units can be implemented in the form of hardware or software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium.
  • the technical solution of the present disclosure is essentially or contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to cause a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods of various embodiments of the present disclosure.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Various media that can store program code, such as Memory, RAM), magnetic disks or optical disks.
  • embodiments of the present disclosure provide a processor-readable storage medium.
  • the processor-readable storage medium stores a computer program.
  • the computer program is used to enable the processor to implement the tasks of the relay terminal in the above method embodiments. All method steps are implemented and the same technical effects can be achieved. The same parts and beneficial effects in this embodiment as in the method embodiment will not be described in detail here.
  • embodiments of the present disclosure provide a processor-readable storage medium.
  • the processor-readable storage medium stores a computer program.
  • the computer program is used to enable the processor to implement what is implemented on the remote terminal side in the above method embodiments. All the method steps can achieve the same technical effect. The parts and beneficial effects in this embodiment that are the same as those in the method embodiment will not be described in detail here.
  • the processor-readable storage medium may be any available media or data storage device that the processor can access, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor memories (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)), etc.
  • magnetic storage such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.
  • optical storage such as CD, DVD, BD, HVD, etc.
  • semiconductor memories such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)
  • an embodiment of the present disclosure also provides a computer program product containing instructions.
  • the computer program is stored in a storage medium.
  • At least one processor can read the computer program from the storage medium.
  • At least one processor executes
  • a computer program can implement all the method steps implemented by the relay terminal in the above method embodiment, and can achieve the same technical effect. The parts and beneficial effects in this embodiment that are the same as those in the method embodiment will not be described in detail here.
  • an embodiment of the present disclosure also provides a computer program product containing instructions.
  • the computer program is stored in a storage medium.
  • At least one processor can read the computer program from the storage medium.
  • At least one processor executes
  • a computer program can implement all the method steps implemented by the remote terminal in the above method embodiments, and can achieve the same technical effects. The parts and beneficial effects in this embodiment that are the same as those in the method embodiments will not be described in detail here.
  • An embodiment of the present disclosure also provides a communication system, including a relay terminal, a first remote terminal and a second remote terminal.
  • the relay terminal can perform all the method steps performed by the relay terminal side in the above method embodiments, and can achieve the same technical effect.
  • the first remote terminal and the second remote terminal can perform all the method steps performed by the remote terminal side in the above method embodiments, and can achieve the same technical effect.
  • the parts and beneficial effects in this embodiment that are the same as those in the method embodiment will not be described in detail here.
  • embodiments of the present disclosure may be provided as methods, systems, or computer program products. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) embodying computer-usable program code therein.
  • a computer-usable storage media including, but not limited to, magnetic disk storage, optical storage, and the like
  • These computer-executable instructions may be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce A device used to implement the functions specified in one process or multiple processes of the signaling interaction schematic diagram and/or one block or multiple blocks of the block diagram.
  • processor-executable instructions may also be stored in a processor-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the generation of instructions stored in the processor-readable memory includes the manufacture of the instruction means product, the instruction device implements the functions specified in one process or multiple processes of the signaling interaction schematic diagram and/or one block or multiple blocks of the block diagram.
  • processor-executable instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby causing the computer or other programmable device to
  • the executed instructions provide steps for implementing the functions specified in a flow or flows of the signaling interaction diagram and/or a block or blocks of the block diagram.

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Abstract

本公开提供的一种信息处理方法、装置、终端及存储介质，中继终端或者远端终端获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息；确定第一标识信息与第二标识信息之间的映射关系；向第一远端终端和/或第二远端终端发送映射关系。通过此方案，由于第二标识信息的比特数小于第一标识信息的比特数，在进行端到端通信过程中，在适配层携带该第二标识信息时，可以节省适配层的头开销，进而提升远端终端通过中继终端进行数据传输时的资源利用率，保障端到端的数据传输效率。

Description

信息处理方法、装置、终端及存储介质
本公开要求于2022年04月22日提交中国专利局、申请号为202210429709.8、申请名称为“信息处理方法、装置、终端及存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及通信技术领域，尤其涉及一种信息处理方法、装置、终端及存储介质。
背景技术
5G NR(New Radio，新空口)系统中为了扩展网络的覆盖范围，引入了终端到网络设备的中继(UE-to-Network Relay，U2N Relay)和终端到终端的中继(UE-to-UE Relay，U2U Relay)。其中，对于U2N Relay，远端终端可以通过该U2U Relay接入网络设备；对于U2U Relay，远端终端可以通过U2U Relay接入目标终端。
相关技术中，远端终端在通过中继终端进行端到端通信时，需要中继终端的适配层配置承载接口的标识信息。然而，这些标识信息会使得适配层的头开销较大，导致端到端通信过程中的资源利用率较低。
发明内容
本请提供一种信息处理方法、装置、终端及存储介质，用于降低适配层的头开销，保障端到端通信的数据传输效率。
第一方面，本公开实施例提供一种信息处理方法，应用于中继终端，信息处理方法包括：获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，第一远端终端和第二远端终端通过中继终端进行端到端通信连接；确定第一标识信息与第二标识信息之间的映射关系；向第一远端终端和/或第二远端终端发送映射关系；其中，第一标识信息包括直接通信接口使用的源地址和目标地址，或者第一标识信息包括源地址、目标地址和传输类型，第二标识信息的比特数小于第一标识信息的比特数。
在一些可选的实施方式中，获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，包括：接收第一远端终端和/或第二远端终端发送的第一标识信息；或者，中继终端的低层从中继终端的高层获取第一标识信息。
在一些可选的实施方式中，接收第一远端终端和/或第二远端终端发送的第一标识信息，包括：接收第一远端终端通过第一PC5-RRC信令发送的第一标识信息；和/或，接收第二远端终端通过第二PC5-RRC信令发送的第一标识信息。
在一些可选的实施方式中，中继终端的低层从中继终端的高层获取第一标识信息，包括：中继终端的高层通过PC5-S信令过程获取第一标识信息，向中继终端的低层发 送携带第一标识信息的第一指示信息，以使中继终端的低层通过第一指示信息获取第一标识信息。
在一些可选的实施方式中，该信息处理方法还包括：接收第一远端终端和/或第二远端终端发送的第二指示信息，根据第二指示信息确定第一标识信息和第二标识信息的映射关系；或者，根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系，包括：确定当前未被占用的候选第二标识信息为中继终端当前可用的第二标识信息；针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，向第一远端终端和/或第二远端终端发送第一标识信息和第二标识信息的映射关系，包括：通过中继终端和第一远端终端之间的第一PC5-RRC信令，向第一远端终端发送映射关系；和/或，通过中继终端和第二远端终端之间的第二PC5-RRC信令，向第二远端终端发送映射关系。
在一些可选的实施方式中，中继终端在通过直接通信接口与第一远端终端进行数据传输时，在适配层PDU头中携带第二标识信息；和/或，中继终端在通过直接通信接口与第二远端终端进行数据传输时，在适配层PDU头中携带第二标识信息。
在一些可选的实施方式中，适配层PDU头还包括如下至少一种：通过第一远端终端和第二远端终端之间的端到端直接通信接口的承载标识信息；或者，通过第一远端终端和第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
第二方面，本公开实施例提供一种信息处理方法，应用于第一远端终端或者第二远端终端，第一远端终端通过中继终端与第二远端终端进行端到端通信连接，信息处理方法包括：获取第一标识信息和第二标识信息的映射关系；根据映射关系，确定适配层PDU头格式；其中，第一标识信息包括直接通信接口使用的源地址和目标地址，或者第一标识信息包括源地址、目标地址和传输类型，第二标识信息的比特数小于第一标识信息的比特数。
在一些可选的实施方式中，获取第一标识信息和第二标识信息的映射关系，包括：接收中继终端发送的映射关系；或者，根据第一标识信息和第二标识信息，确定映射关系。
在一些可选的实施方式中，接收中继终端发送的映射关系，包括：获取第一标识信息；通过第一远端终端和中继终端之间的第一PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息，并接收中继终端通过第一PC5-RRC信令发送的映射关系；和/或，通过第二远端终端和中继终端之间的第二PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息，并接收中继终端通过第二PC5-RRC信令发送的映射关系。
在一些可选的实施方式中，根据第一标识信息和第二标识信息，确定映射关系，包括：获取第一标识信息；确定当前未被占用的候选第二标识信息为中继终端当前可用的第二标识信息；针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，获取第一标识信息，包括：第一远端终端的高层通过PC5-S信令过程获取第一标识信息，并向第一远端终端的低层发送携带第一标识信息的第三指示信息，以使第一远端终端的低层通过第三指示信息获取第一标识信息；或者，通过第一远端终端的低层进行端到端的PC5-RRC信令交互过程，获得第一标识信息。
在一些可选的实施方式中，该信息处理方法还包括如下至少一项：第一远端终端通过第一PC5-RRC信令，向中继终端发送映射关系；或者，第二远端终端通过第二PC5-RRC信令，向中继终端发送映射关系；或者，第一远端终端通过第一远端终端和第二远端终端之间端到端的第三PC5-RRC信令，向第二远端终端发送映射关系；或者，第二远端终端通过第三PC5-RRC信令，向第一远端终端发送映射关系。
在一些可选的实施方式中，第一远端终端和第二远端终端在通过直接通信接口进行数据传输时，在适配层PDU头中携带第二标识信息；和/或，远端终端在通过直接通信接口与中继终端行数据传输时，在适配层PDU头中携带第二标识信息。
在一些可选的实施方式中，适配层PDU头还包括如下至少一种：第一远端终端和第二远端终端之间的端到端直接通信接口的承载标识信息；或者，第一远端终端和第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
第三方面，本公开实施例提供一种中继终端，包括：获取模块，用于获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，第一远端终端和第二远端终端通过中继终端进行端到端通信连接；确定模块，用于确定第一标识信息与第二标识信息之间的映射关系；发送模块，用于向第一远端终端和/或第二远端终端发送映射关系；其中，第一标识信息包括直接通信接口使用的源地址和目标地址，或者第一标识信息包括源地址、目标地址和传输类型，第二标识信息的比特数小于第一标识信息的比特数。
在一些可选的实施方式中，获取模块具体用于：接收第一远端终端和/或第二远端终端发送的第一标识信息；或者，中继终端的低层从中继终端的高层获取第一标识信息。
在一些可选的实施方式中，获取模块具体用于：接收第一远端终端通过第一PC5-RRC信令发送的第一标识信息；和/或，接收第二远端终端通过第二PC5-RRC信令发送的第一标识信息。
在一些可选的实施方式中，获取模块具体用于中继终端的高层通过PC5-S信令过程获取第一标识信息，向中继终端的低层发送携带第一标识信息的第一指示信息，以 使中继终端的低层通过第一指示信息获取第一标识信息。
在一些可选的实施方式中，获取模块具体用于：接收第一远端终端和/或第二远端终端发送的第二指示信息，根据第二指示信息确定第一标识信息和第二标识信息的映射关系；或者，根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，获取模块具体用于：确定当前未被占用的候选第二标识信息为中继终端当前可用的第二标识信息；针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，发送模块具体用于：通过中继终端和第一远端终端之间的第一PC5-RRC信令，向第一远端终端发送映射关系；和/或，通过中继终端和第二远端终端之间的第二PC5-RRC信令，向第二远端终端发送映射关系。
在一些可选的实施方式中，中继终端在通过直接通信接口与第一远端终端进行数据传输时，在适配层PDU头中携带第二标识信息；和/或，中继终端在通过直接通信接口与第二远端终端进行数据传输时，在适配层PDU头中携带第二标识信息。
在一些可选的实施方式中，适配层PDU头还包括如下至少一种：第一远端终端和第二远端终端之间的端到端直接通信接口的承载标识信息；或者，第一远端终端和第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
第四方面，本公开实施例提供一种远端终端，该远端终端为第一远端终端或者第二远端终端，第一远端终端与第二远端终端通过中继终端进行端到端通信连接，远端终端包括：获取模块，用于获取第一标识信息和第二标识信息的映射关系；确定模块，用于根据映射关系，确定适配层PDU头格式；其中，第一标识信息包括直接通信接口使用的源地址和目标地址，或者第一标识信息包括源地址、目标地址和传输类型，第二标识信息的比特数小于第一标识信息的比特数。
在一些可选的实施方式中，获取模块具体用于：接收中继终端发送的映射关系；或者，根据第一标识信息和第二标识信息，确定映射关系。
在一些可选的实施方式中，获取模块具体用于：获取第一标识信息；通过第一远端终端和中继终端之间的第一PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息，并接收中继终端通过第一PC5-RRC信令发送的映射关系；和/或，通过第二远端终端和中继终端之间的第二PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息，并接收中继终端通过第二PC5-RRC信令发送的映射关系。
在一些可选的实施方式中，获取模块具体用于：获取第一标识信息；确定当前未被占用的候选第二标识信息为中继终端当前可用的第二标识信息；针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，获取模块具体用于：第一远端终端的高层通过PC5-S信令过程获取第一标识信息，并向第一远端终端的低层发送携带第一标识信息的第三指示信息，以使第一远端终端的低层通过第三指示信息获取第一标识信息；或者，通过第一远端终端的低层进行端到端的PC5-RRC信令交互过程，获得第一标识信息。
在一些可选的实施方式中，该远端终端还包括，发送模块，用于第一远端终端通过第一PC5-RRC信令，向中继终端发送映射关系；或者，用于第二远端终端通过第二PC5-RRC信令，向中继终端发送映射关系；或者，用于第一远端终端通过第一远端终端和第二远端终端之间端到端的第三PC5-RRC信令，向第二远端终端发送映射关系；或者，用于第二远端终端通过第三PC5-RRC信令，向第一远端终端发送映射关系。
在一些可选的实施方式中，第一远端终端和第二远端终端在通过直接通信接口进行数据传输时，在适配层PDU头中携带第二标识信息；和/或，远端终端在通过直接通信接口与中继终端行数据传输时，在适配层PDU头中携带第二标识信息。
在一些可选的实施方式中，适配层PDU头还包括如下至少一种：第一远端终端和第二远端终端之间的端到端直接通信接口的承载标识信息；或者，第一远端终端和第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
第五方面，本公开实施例提供一种中继终端，包括：
存储器，用于存储计算机程序；
收发机，用于在处理器的控制下收发数据；
处理器，用于读取存储器中的计算机程序并执行以下操作：获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，第一远端终端和第二远端终端通过中继终端进行端到端通信连接；确定第一标识信息与第二标识信息之间的映射关系；向第一远端终端和/或第二远端终端发送映射关系；其中，第一标识信息包括直接通信接口使用的源地址和目标地址，或者第一标识信息包括源地址、目标地址和传输类型，第二标识信息的比特数小于第一标识信息的比特数。
在一些可选的实施方式中，获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，包括：接收第一远端终端和/或第二远端终端发送的第一标识信息；或者，中继终端的低层从中继终端的高层获取第一标识信息。
在一些可选的实施方式中，接收第一远端终端和/或第二远端终端发送的第一标识信息，包括：接收第一远端终端通过第一PC5-RRC信令发送的第一标识信息；和/或，接收第二远端终端通过第二PC5-RRC信令发送的第一标识信息。
在一些可选的实施方式中，中继终端的低层从中继终端的高层获取第一标识信息，包括：中继终端的高层通过PC5-S信令过程获取第一标识信息，向中继终端的低层发送携带第一标识信息的第一指示信息，以使中继终端的低层通过第一指示信息获取第一标识信息。
在一些可选的实施方式中，确定第一标识信息与第二标识信息之间的映射关系， 包括：接收第一远端终端和/或第二远端终端发送的第二指示信息，根据第二指示信息确定第一标识信息和第二标识信息的映射关系；或者，根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系，包括：确定当前未被占用的候选第二标识信息为中继终端当前可用的第二标识信息；针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，向第一远端终端和/或第二远端终端发送第一标识信息和第二标识信息的映射关系，包括：通过中继终端和第一远端终端之间的第一PC5-RRC信令，向第一远端终端发送映射关系；和/或，通过中继终端和第二远端终端之间的第二PC5-RRC信令，向第二远端终端发送映射关系。
在一些可选的实施方式中，中继终端在通过直接通信接口与第一远端终端进行数据传输时，在适配层协议单元PDU头中携带第二标识信息；和/或，中继终端在通过直接通信接口与第二远端终端进行数据传输时，在适配层PDU头中携带第二标识信息。
在一些可选的实施方式中，适配层PDU头还包括如下至少一种：第一远端终端和第二远端终端之间的端到端直接通信接口的承载标识信息；或者，第一远端终端和第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
第六方面，本公开实施例提供一种远端终端，远端终端为第一远端终端或者第二远端终端，第一远端终端通过中继终端与第二远端终端进行端到端通信连接，远端终端包括：
存储器，用于存储计算机程序；
收发机，用于在处理器的控制下收发数据；
处理器，用于读取存储器中的计算机程序并执行以下操作：获取第一标识信息和第二标识信息的映射关系；根据映射关系，确定适配层PDU头格式；其中，第一标识信息包括直接通信接口使用的源地址和目标地址，或者第一标识信息包括源地址、目标地址和传输类型，第二标识信息的比特数小于第一标识信息的比特数。
在一些可选的实施方式中，获取第一标识信息和第二标识信息的映射关系，包括：接收中继终端发送的映射关系；或者，根据第一标识信息和第二标识信息，确定映射关系。
在一些可选的实施方式中，接收中继终端发送的映射关系，包括：获取第一标识信息；通过第一远端终端和中继终端之间的第一PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息，并接收中继终端通过第一PC5-RRC信令发送的映射关系；和/或，通过第二远端终端和中继终端之间的第二PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息，并接收中继终端通过第二PC5-RRC信令发送的映射关系。
在一些可选的实施方式中，根据第一标识信息和第二标识信息，确定映射关系，包括：获取第一标识信息；确定当前未被占用的候选第二标识信息为中继终端当前可用的第二标识信息；针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，获取第一标识信息，包括：第一远端终端的高层通过PC5-S信令过程获取第一标识信息，并向第一远端终端的低层发送携带第一标识信息的第三指示信息，以使第一远端终端的低层通过第三指示信息获取第一标识信息；或者，通过第一远端终端的低层进行端到端的PC5-RRC信令交互过程，获得第一标识信息。
在一些可选的实施方式中，处理器还用于执行如下至少一项：第一远端终端通过第一PC5-RRC信令，向中继终端发送映射关系；或者，第二远端终端通过第二PC5-RRC信令，向中继终端发送映射关系；或者，第一远端终端通过第一远端终端和第二远端终端之间端到端的第三PC5-RRC信令，向第二远端终端发送映射关系；或者，第二远端终端通过第三PC5-RRC信令，向第一远端终端发送映射关系。
在一些可选的实施方式中，第一远端终端和第二远端终端在通过直接通信接口进行数据传输时，在适配层PDU头中携带第二标识信息；和/或，远端终端在通过直接通信接口与中继终端行数据传输时，在适配层PDU头中携带第二标识信息。
在一些可选的实施方式中，适配层PDU头还包括如下至少一种：第一远端终端和第二远端终端之间的端到端直接通信接口的承载标识信息；通过第一远端终端和第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
第七方面，本公开实施例提供一种处理器可读存储介质，处理器可读存储介质存储有计算机程序，计算机程序用于使处理器执行第一方面和/或第二方面中任一方面的信息处理方法。
第八方面，本公开实施例提供一种计算机程序产品，包括：计算机程序，计算机程序被处理器执行时实现如第一方面和/或第二方面中任一方面的信息处理方法。
本公开提供的信息处理方法、装置、终端及存储介质中，中继终端或者远端终端获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，第一远端终端和第二远端终端通过中继终端进行端到端通信连接；确定第一标识信息与第二标识信息之间的映射关系；向第一远端终端和/或第二远端终端发送映射关系。通过此方案，由于第二标识信息的比特数小于第一标识信息的比特数，在进行端到端通信过程中，在适配层携带该第二标识信息时，可以节省适配层的头开销，进而提升远端终端通过中继终端进行数据传输时的资源利用率。
应当理解，上述发明内容部分中所描述的内容并非旨在限定本公开的实施例的关键或重要特征，亦非用于限制本公开的范围。本公开的其它特征将通过以下的描述变得容易理解。
附图说明
图1为本公开实施例提供应用场景示意图；
图2为本公开实施例提供的信息处理方法的信令交互示意图一；
图3a为本公开实施例提供的适配层PDU头的示意图一；
图3b为本公开实施例提供的适配层PDU头的示意图二；
图4为本公开实施例提供的信息处理方法的信令交互示意图二；
图5为本公开实施例提供的信息处理方法的信令交互示意图三；
图6为本公开实施例提供的信息处理方法的信令交互示意图四；
图7为本公开实施例提供的中继终端的结构示意图一；
图8为本公开实施例提供的远端终端的结构示意图一；
图9为本公开实施例提供的中继终端的结构示意图二；
图10为本公开实施例提供的远端终端的结构示意图二。
具体实施方式
本公开中术语“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。本公开实施例中术语“多个”是指两个或两个以上，其它量词与之类似。
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，并不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
5G NR系统中为了扩展网络的覆盖范围，引入了终端到网络设备的中继UE-to-Network Relay和终端到终端的中继UE-to-UE Relay。其中，中继终端(Relay UE)为处于网络覆盖范围内的终端，远端终端可以位于网络覆盖范围内，也可以位于网络覆盖范围外。对于UE-to-Network Relay，远端终端可以通过中继终端接入网络设备；对于UE-to-UE Relay，远端终端可以通过中继终端接入另一远端终端。
其中，上述UE-to-UE Relay中继场景下，两个远端终端之间的承载称为端到端承载，端到端承载底层传输时，需要使用两段PC5RLC channel(即两个远端终端和中继终端之间的PC5RLC channel)。
图1为本公开实施例提供应用场景示意图。需要说明的是，该场景为UE-to-UE Relay通信架构，如图1所示，该场景中包括：第一远端终端101、第二远端终端102和中继终端103。
需要说明的是，对于UE-to-UE relay，中继终端103和第一远端终端101、以及中继终端103和第二远端终端102之间使用的接口都是直接通信，其中，直接通信是指 邻近的终端可以在近距离范围内通过直接通信链路(也称为Sidelink或者PC5)进行数据传输的方式，Sidelink链路对应的无线接口称为直接通信接口(也称为Sidelink接口或者PC5接口)。
常规情况下，直接通信接口标识通信对端是通过源地址、目标地址和传输类型组合进行标识的。其中，源地址的大小为24bit、目标地址的大小为24bit、传输方式(例如，组播、单播、广播等)至少需要占用2bit。也就是说，在通信过程中，标识信息至少需要50bit，考虑到整字节问题，至少需要占用7个字节的开销。
而在上述UE-to-UE Relay中，适配层需要做两段直接通信链路之间的映射，都需要使用在适配层携带直接通信接口的标识信息，如果使用50bit的直接通信接口标识信息，7个字节的开销会降低端到端通信过程中的资源利用率，进而降低数据传输效率，在此通信架构中基本不可接受。
有鉴于此，本公开实施例提供一种信息处理方法、装置、终端及存储介质，通过中继终端或者远端终端确定通过该中继终端进行端到端数据传输的两个远端终端之间使用的第一标识信息，然后根据第一标识信息，确定比特数小于第一标识信息比特数的第二标识信息，并将第一标识信息和第二标识信息的映射关系发送给两个远端终端，使得两个远端终端按照第二标识信息进行端到端通信时，在适配层中携带第二标识信息，以节省适配层的头开销，进而提升端到端通信过程中的资源利用率，保障端到端的数据传输效率。
需要说明的是，上述的第一远端终端101、第二远端终端102和中继终端103，均可以是指向用户提供语音和/或数据连通性的设备、有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备等。
另外，在不同的系统中，上述终端的名称可能也不相同，例如在5G系统中，上述终端可以称为用户设备(User Equipment，UE)，上述终端也可以为无线终端，其中，无线终端可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network,CN)进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(Session Initiated Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备。无线终端也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、用户装置(user device)，本公开实施例中并不限定。
本公开实施例提供的技术方案可以适用于多种系统。例如适用的系统可以是全球 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)通用分组无线业务(general packet radio service，GPRS)系统、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)系统、高级长期演进(long term evolution advanced，LTE-A)系统、通用移动系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)系统、5G新空口(New Radio,NR)系统等。这多种系统中均包括终端和网络设备。系统中还包括核心网部分，例如演进的分组系统(Evloved Packet System,EPS)、5G系统(5GS)等。
应理解，上述的图1为示意性的，上述场景中还可以包括其它网络设备，如还可以包括无线中继器设备和无线回传设备等，在图1中未示出。
需要说明的是，本公开实施例所提供的方法和装置是基于同一申请构思的，由于方法和装置解决问题的原理相似，因此装置和方法的实施可以相互参见，重复之处不再赘述。
图2为本公开一实施例提供的信息处理方法的信令交互示意图一。如图2所示，该信息处理方法可以包括如下步骤：
S201、中继终端获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息。
其中，第一标识信息包括直接通信接口使用的源地址和目标地址；或者，第一标识信息包括源地址、目标地址和传输类型。
可选的，在步骤S201之前，第一远端终端和第二远端终端可以通过中继终端建立端到端连接。具体的，第一远端终端可以先发送发现(discovery)消息，当中继终端接收到第一远端终端发送的discovery消息后，在该discovery消息中添加中继终端的标识信息，获得目标discovery消息，然后转发该目标discovery消息。进一步的，当第二远端终端接收到中继终端发送的目标discovery消息后，通过目标discovery消息中的标识信息确定中继终端，并通过该中继终端与第一远端终端建立端到端无线资源控制(Radio Resource Control，RRC)连接。
S202、中继终端确定第一标识信息与第二标识信息之间的映射关系。
在本公开实施例中，第二标识信息的比特数小于第一标识信息的比特数，至于第二标识信息的确定方法，在后续实施例中示出。
S203a、中继终端向第一远端终端发送第一标识信息和第二标识信息的映射关系。
S203b、中继终端向第二远端终端发送第一标识信息和第二标识信息的映射关系。
S204a、第一远端终端根据映射关系确定适配层协议数据单元(Protocol Data Unit，PDU)头格式。
S204b、第一远端终端根据映射关系确定适配层PDU头格式。
需要说明的是，对于上述步骤S203a和S203b的执行顺序，以及，上述步骤S204a和S204b的执行顺序，本公开实施例不做特别限定。
由于第二标识信息的比特数小于第一标识信息的比特数，相比现有技术中在适配层携带第一标识信息的方式，本公开实施例中，在进行端到端通信时，在适配层携带该第二标识信息时，可以节省适配层的头开销，进而提升远端终端通过U2U中继进行数据传输时的资源利用率，保障端到端的数据传输效率。
需要说明的是，第一远端终端、第二远端终端和中继终端中的至少一个，在通过直接通信接口进行数据传输时，在适配层的协议单元头部(Packet Data Unit-header，PDU-header)中携带该第二标识信息。相应的，数据接收端(包括中继设备和远端终端)在接收到该适配层PDU头时，即可根据第二标识信息和映射关系，确定第一标识信息中的源地址、目标地址和传输类型等信息，从而根据标识信息接收或中转数据，实现端到端的数据传输。
接下来，结合图3a和图3b对远端终端进行端到端通信时所使用的适配层PDU头格式进行示例性说明。
示例一，图3a为本公开实施例提供的适配层PDU头的示意图一。如图3a所示，该协议单元头部包括：第二标识信息，以及第一远端终端和第二远端终端之间的端到端承载标识(Bearer ID)。
示例二，图3b为本公开实施例提供的适配层PDU头的示意图二；如图3b所示，该PDU头包括：第二标识信息，以及第一远端终端和第二远端终端之间的端到端逻辑信道标识(logical channel identify，LCID)。
需要说明的是，在图3a中，第二标识信息为8bit、Bearer ID为5bit，适配层PDU头占用2个字节；在图3b中，第二标识信息为8bit、LCID为5bit，适配层PDU头占用2个字节，因此，相较于现有方式，在进行端到端通信过程中，在适配层携带该第二标识信息时，极大的节省了适配层的头开销，进而提升端到端通信过程中的资源利用率，保障端到端数据传输效率。
在第一种示例中，可以通过中继终端获取第一标识信息，并由中继终端根据第一标识信息获得映射关系。接下来，结合图4进行详细说明。
图4为本公开一实施例提供的信息处理方法的信令交互示意图二。如图4所示，该信息处理方法可以包括如下步骤：
S401、中继终端的低层从中继终端的高层获取第一标识信息。
具体的，中继终端的高层通过PC5-S信令过程获取第一标识信息，向中继终端的低层发送携带第一标识信息的第一指示信息，以使中继终端的低层通过第一指示信息获取第一标识信息。
需要说明的是，对于高层和低层的具体类型，本公开实施例不做特别限定，例如， 高层可以为PC5-S协议层，低层可以为PC5-RRC层。也即，本公开实施例的一种可能的示例为：中继终端的PC5-S协议层获取第一远端终端和第二远端终端之间使用的第一标识信息后，通知远端终端的PC5-RRC层。
需要说明的是，第一远端终端和第二远端终端之间通过中继终端建立RRC连接的方案请参考图2所示实施例，此处不再赘述。
S402、中继终端根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，中继终端在通过上述步骤S402确定映射关系时，具体包括如下步骤：
(1)确定当前未被占用的候选第二标识信息为当前可用的第二标识信息。
(2)针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；
(3)根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
需要说明的是，对于从可用的第二标识信息中选择第二标识信息的方式，本公开实施例不做限定，例如，可以随机选择一个可用的第二标识信息作为该第二标识信息。
示例性的，以第一标识信息包含L2源地址标识、L2目标地址标识和通信类型标识信息，且第二标识信息的长度为8bit为例，则中继终端在接收到一个第一标识信息后，可以在当前未使用的候选第二标识中随机选取一个未被占用的第二标识信息，然后根据第一标识信息和第二标识信息确定第一标识信息和第二标识信息之间的映射关系。
S403a、中继终端向第一远端终端发送第一标识信息和第二标识信息的映射关系。
具体的，中继终端可以通过中继终端和第一远端终端之间的第一PC5-RRC信令，向第一远端终端发送映射关系。
S403b、中继终端向第二远端终端发送第一标识信息和第二标识信息的映射关系。
类似的，中继终端可以通过中继终端和第二远端终端之间的第二PC5-RRC信令，向第二远端终端发送映射关系。
S404a、第一远端终端根据映射关系确定适配层PDU头格式。
S404b、第二远端终端根据映射关系确定适配层PDU头格式。
其中，第一远端终端、第二远端终端和中继终端中的至少一个，在通过直接通信接口进行数据传输时，在适配层PDU头中携带该第二标识信息。
需要说明的是，PDU头格式请参考图3所示实施例，此处不再赘述。另外，对于上述步骤S403a和S403b的执行顺序，以及，上述步骤S404a和S404b的执行顺序，本公开实施例不做限定。
由于第二标识信息的比特数小于第一标识信息的比特数，相比现有技术中在适配层携带第一标识信息的方式，本公开实施例中，在进行端到端通信时，在适配层携带 该第二标识信息时，可以节省适配层的头开销，从而可以提升远端终端通过中继终端进行数据传输时的资源利用率，保障端到端数据传输效率。另外，中继终端在获取第一标识信息时，通过中继终端的低层从中继终端的高层获取第一标识信息，此过程中无需远端终端的介入，可以减少信令交互、降低本公开的实现复杂度。
在第二种示例中，还可以通过远端终端获取第一标识信息，并由中继终端根据第一标识信息获取映射关系。接下来，结合图5进行详细说明。
图5为本公开实施例提供的信息处理方法的信令交互示意图二。如图5所示，该信息处理方法可以包括如下步骤：
S501、远端终端获取第一标识信息。
需要说明的是，第一远端终端和第二远端终端之间通过中继终端建立RRC连接的方案请参考图2所示实施例，此处不再赘述。
在一些实施例中，远端终端(第一远端终端或者第二远端终端)获取第一标识信息时，包括但不限于如下两种实现方式：
(1)远端终端的高层通过PC5-S信令过程获取第一标识信息，并向远端终端的低层发送携带第一标识信息的第三指示信息，以使远端终端的低层通过第三指示信息获取第一标识信息。
需要说明的是，对于远端终端的高层和低层的具体类型，本公开实施例不做限定，例如，远端终端的高层可以为PC5-S协议层，远端终端的低层可以为PC5-RRC层。也即，在本公开的一个示例中，远端终端在确定第一远端终端和第二远端终端之间使用的第一标识信息后，通过远端终端的高层PC5-S协议层向远端终端的PC5-RRC层发送携带有第一标识信息的第三指示信息，使得远端终端的PC5-RRC层通过第三指示信息获取第一标识信息。
(2)通过第一远端终端的低层进行端到端的PC5-RRC信令交互过程，获得第一标识信息。
S502、远端终端向中继终端发送第一标识信息。
具体的，第一远端终端通过第一远端终端和中继终端之间的第一PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息。
需要说明的是，本实施例中的远端终端可以为第一远端终端和/或第二远端终端，在图5的步骤S501～S502中以第一远端终端为例示出，但不以此为限定。例如，还可以通过第二远端终端获取第一标识信息，并由第二远端终端通过第二远端终端和中继终端之间的第二PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息。
S503、中继终端根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系；
具体的，上述步骤S503可以包括如下步骤：
(1)确定当前未被占用的候选第二标识信息为当前可用的第二标识信息；
(2)针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；
(3)根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
需要说明的是，上述步骤S503的实现方式与图4的步骤S402的方法和原理类似，此处不再赘述。
S504a、中继终端向第一远端终端发送第一标识信息和第二标识信息的映射关系。
示例性的，中继终端通过中继终端和第一远端终端之间的第一PC5-RRC信令，向第一远端终端发送映射关系；
S504b、中继终端向第二远端终端发送第一标识信息和第二标识信息的映射关系。
具体的，中继终端通过中继终端和第二远端终端之间的第二PC5-RRC信令，向第二远端终端发送映射关系。
S505a、第一远端终端根据映射关系确定适配层PDU头格式。
S505b、第二远端终端根据映射关系确定适配层PDU头格式。
其中，第一远端终端、第二远端终端和中继终端中的至少一个，在通过直接通信接口进行数据传输时，在适配层PDU头中携带该第二标识信息。
需要说明的是，PDU头格式请参考图3所示实施例，此处不再赘述。另外，对于上述步骤S504a和S504b的执行顺序，以及，上述步骤S505a和S505b的执行顺序，本公开实施例不做特别限定。
由于第二标识信息的比特数小于第一标识信息的比特数，相比现有技术中在适配层携带第一标识信息的方式，本公开实施例中，在进行端到端通信时，在适配层携带该第二标识信息时，可以节省适配层的头开销，进而可以提升远端终端通过中继终端进行数据传输时的资源利用率，保障端到端数据传输效率。另外，通过远端终端获取第一标识信息，并通过中继终端根据第一标识信息确定映射关系，使得本方案可以灵活的应用于各种通信场景。
在第三种示例中，还可以通过远端终端获取第一标识信息；根据第一标识信息获得映射关系，接下来，结合图6进行详细说明：
图6为本公开实施例提供的信息处理方法的信令交互示意图三。如图6所示，该信息处理方法可以包括如下步骤：
S601、远端终端获取第一标识信息。
需要说明的是，第一远端终端和第二远端终端之间通过中继终端建立RRC连接的方案请参考图2所示实施例，此处不再赘述。
在一些实施例中，远端终端(第一远端终端或者第二远端终端)获取第一标识信息时，包括但不限于如下两种实现方式：
(1)第一远端终端的高层通过PC5-S信令过程获取第一标识信息，并向第一远端终端的低层发送携带第一标识信息的第三指示信息，以使第一远端终端的低层通过第 三指示信息获取第一标识信息；
(2)通过第一远端终端的低层进行端到端的PC5-RRC信令交互过程，获得第一标识信息。
需要说明的是，上述步骤S601的实现方式与图5的步骤S501的方法和原理类似，此处不再赘述。
S602、远端终端根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些实施例中，远端终端在确定映射关系时，具体包括如下步骤：
(1)确定当前未被占用的候选第二标识信息为当前可用的第二标识信息；
(2)针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；
(3)根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
S603a、远端终端向中继终端发送第一标识信息和第二标识信息的映射关系。
具体的，若远端终端为第一远端终端，则第一远端终端可以通过中继终端和第一远端终端之间的第一PC5-RRC信令，向中继终端发送映射关系。类似的，若远端终端为第二远端终端，则第二远端终端可以通过中继终端和第二远端终端之间的第二PC5-RRC信令，向中继终端发送映射关系。
S603b、远端终端向另一远端终端发送第一标识信息和第二标识信息的映射关系。
示例性的，若远端终端为第一远端终端，则第一远端终端通过第一远端终端和第二远端终端之间的第三PC5-RRC信令，向第二远端终端发送映射关系。类似的，若远端终端为第二远端终端，则第二远端终端可以通过第一远端终端和第二远端终端之间的第三PC5-RRC信令，向第一远端终端发送映射关系。
需要说明的是，在图6所示实施例中的步骤S601～S602，以及S603a、S603b均以远端终端为第一远端终端为例示出，但实际应用中不以此为限定。
S604a、第一远端终端根据映射关系确定适配层PDU头格式。
S604b、第二远端终端根据映射关系确定适配层PDU头格式。
其中，第一远端终端、第二远端终端和中继终端中的至少一个，在通过直接通信接口进行数据传输时，在适配层PDU头中携带该第二标识信息。
需要说明的是，PDU头格式请参考图3所示实施例，此处不再赘述。另外，对于上述步骤S603a和S603b的执行顺序，以及，上述步骤S604a和S604b的执行顺序，本公开实施例不做限定。
由于第二标识信息的比特数小于第一标识信息的比特数，相比现有技术中在适配层携带第一标识信息的方式，本公开实施例中，在进行端到端通信时，在适配层携带该第二标识信息时，可以节省适配层的头开销，进而提升远端终端通过中继终端进行数据传输时的资源利用率，保障端到端数据传输效率。另外，通过远端终端获取第一 标识信息，并通过远端终端根据第一标识信息确定映射关系，使得本方案可以灵活的应用于各种通信场景，例如，在中继终端无法获取第一标识信息且无法获取映射关系的场景中，通过远端终端来获取第一标识信息；根据第一标识信息获取映射关系，也可以达到本公开中降低适配层的头开销的目的。
在目标中继终端侧，本公开实施例提供了一种中继终端。图7为本公开实施例提供的中继终端的结构示意图一。如图7所示，该中继终端700包括：
获取模块701，用于获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，第一远端终端和第二远端终端通过中继终端进行端到端通信连接；确定模块702，用于确定第一标识信息与第二标识信息之间的映射关系；发送模块703，用于向第一远端终端和/或第二远端终端发送映射关系；其中，第一标识信息包括直接通信接口使用的源地址和目标地址，或者第一标识信息包括源地址、目标地址和传输类型，第二标识信息的比特数小于第一标识信息的比特数。
在一些可选的实施方式中，获取模块701具体用于：接收第一远端终端和/或第二远端终端发送的第一标识信息；或者，中继终端的低层从中继终端的高层获取第一标识信息。
在一些可选的实施方式中，获取模块701具体用于：接收第一远端终端通过第一PC5-RRC信令发送的第一标识信息；和/或，接收第二远端终端通过第二PC5-RRC信令发送的第一标识信息。
在一些可选的实施方式中，获取模块701具体用于中继终端的高层通过PC5-S信令过程获取第一标识信息，向中继终端的低层发送携带第一标识信息的第一指示信息，以使中继终端的低层通过第一指示信息获取第一标识信息。
在一些可选的实施方式中，获取模块701具体用于：接收第一远端终端和/或第二远端终端发送的第二指示信息，根据第二指示信息确定第一标识信息和第二标识信息的映射关系；或者，根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，获取模块701具体用于：确定当前未被占用的候选第二标识信息为中继终端当前可用的第二标识信息；针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，发送模块703具体用于：通过中继终端和第一远端终端之间的第一PC5-RRC信令，向第一远端终端发送映射关系；和/或，通过中继终端和第二远端终端之间的第二PC5-RRC信令，向第二远端终端发送映射关系。
在一些可选的实施方式中，中继终端在通过直接通信接口与第一远端终端进行数据传输时，在适配层PDU头中携带第二标识信息；和/或，中继终端在通过直接通信接口与第二远端终端进行数据传输时，在适配层PDU头中携带第二标识信息。
在一些可选的实施方式中，适配层PDU头还包括如下至少一种：第一远端终端和第二远端终端之间的端到端直接通信接口的承载标识信息；或者，第一远端终端和第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
在此需要说明的是，本公开提供的上述中继终端，能够相应地实现上述方法实施例中中继终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在远端终端侧，本公开实施例提供了一种远端终端，该远端终端为第一远端终端或者第二远端终端，第一远端终端与第二远端终通过中继终端端进行端到端通信连接。
图8为本公开实施例提供的远端终端的结构示意图一。如图8所示，该远端终端800包括：获取模块801，用于获取第一标识信息和第二标识信息的映射关系；确定模块802，用于根据映射关系，确定适配层PDU头格式；其中，第一标识信息包括直接通信接口使用的源地址和目标地址，或者第一标识信息包括源地址、目标地址和传输类型，第二标识信息的比特数小于第一标识信息的比特数。
在一些可选的实施方式中，获取模块801具体用于：接收中继终端发送的映射关系；或者，根据第一标识信息和第二标识信息，确定映射关系。
在一些可选的实施方式中，获取模块801具体用于：获取第一标识信息；通过第一远端终端和中继终端之间的第一PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息，并接收中继终端通过第一PC5-RRC信令发送的映射关系；和/或，通过第二远端终端和中继终端之间的第二PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息，并接收中继终端通过第二PC5-RRC信令发送的映射关系。
在一些可选的实施方式中，获取模块801具体用于：获取第一标识信息；确定当前未被占用的候选第二标识信息为中继终端当前可用的第二标识信息；针对第一标识信息，从中继终端当前可用的第二标识信息中选择
第二标识信息；根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，获取模块801具体用于：第一远端终端的高层通过PC5-S信令过程获取第一标识信息，并向第一远端终端的低层发送携带第一标识信息的第三指示信息，以使第一远端终端的低层通过第三指示信息获取第一标识信息；或者，通过第一远端终端的低层进行端到端的PC5-RRC信令交互过程，获得第一标识信息。
在一些可选的实施方式中，该远端终端800还包括，发送模块803，用于第一远端终端通过第一PC5-RRC信令，向中继终端发送映射关系；或者，用于第二远端终端通过第二PC5-RRC信令，向中继终端发送映射关系；或者，用于第一远端终端通过第一远端终端和第二远端终端之间端到端的第三PC5-RRC信令，向第二远端终端发送映射关系；或者，用于第二远端终端通过第三PC5-RRC信令，向第一远端终端发送映射 关系。
在一些可选的实施方式中，第一远端终端和第二远端终端在通过直接通信接口进行数据传输时，在适配层PDU头中携带第二标识信息；和/或，远端终端在通过直接通信接口与中继终端行数据传输时，在适配层PDU头中携带第二标识信息。
在一些可选的实施方式中，适配层PDU头还包括如下至少一种：通过第一远端终端和第二远端终端之间的端到端直接通信接口的承载标识信息；或者，通过第一远端终端和第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
在此需要说明的是，本公开提供的上述远端终端800，能够相应地实现上述方法实施例中第一远端终端或者第二远端终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
图9为本公开实施例提供的中继终端的结构示意图二。如图9所示，该中继终包括：收发机901、处理器902和存储器903。
存储器903，用于存储计算机程序；
收发机901，用于在处理器902的控制下收发数据；
其中，在图9中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器902代表的一个或多个处理器和存储器903代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机901可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器902负责管理总线架构和通常的处理，存储器903可以存储处理器902在执行操作时所使用的数据。
处理器902负责管理总线架构和通常的处理，存储器903可以存储处理器902在执行操作时所使用的数据。可选的，处理器902可以是中央处埋器(central processing unit，CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)，处理器也可以采用多核架构。
处理器902通过调用存储器903存储的计算机程序，用于按照获得的可执行指令执行本公开实施例提供的有关目标中继终端的任一终端接入方法。处理器902与存储器903也可以物理上分开布置。
具体的，处理器902用于读取存储器903中的计算机程序并执行以下操作：获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，第一远端终端和第二远端终端通过中继终端进行端到端通信连接；确定第一标识信息与第二标识信息之间的映射关系；向第一远端终端和/或第二远端终端发送映射关系；其中，第一标识信息包括直接通信接口使用的源地址和目标地址，或者第一标识信息包括源地址、目 标地址和传输类型，第二标识信息的比特数小于第一标识信息的比特数。
在一些可选的实施方式中，获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，包括：接收第一远端终端和/或第二远端终端发送的第一标识信息；或者，中继终端的低层从中继终端的高层获取第一标识信息。
在一些可选的实施方式中，接收第一远端终端和/或第二远端终端发送的第一标识信息，包括：接收第一远端终端通过第一PC5-RRC信令发送的第一标识信息；和/或，接收第二远端终端通过第二PC5-RRC信令发送的第一标识信息。
在一些可选的实施方式中，中继终端的低层从中继终端的高层获取第一标识信息，包括：中继终端的高层通过PC5-S信令过程获取第一标识信息，向中继终端的低层发送携带第一标识信息的第一指示信息，以使中继终端的低层通过第一指示信息获取第一标识信息。
在一些可选的实施方式中，确定第一标识信息与第二标识信息之间的映射关系，包括：接收第一远端终端和/或第二远端终端发送的第二指示信息，根据第二指示信息确定第一标识信息和第二标识信息的映射关系；或者，根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系，包括：确定当前未被占用的候选第二标识信息为中继终端当前可用的第二标识信息；
针对第一标识信息，从中继终端当前可用的第二标识信息中选择
第二标识信息；根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，向第一远端终端和/或第二远端终端发送第一标识信息和第二标识信息的映射关系，包括：通过中继终端和第一远端终端之间的第一PC5-RRC信令，向第一远端终端发送映射关系；和/或，通过中继终端和第二远端终端之间的第二PC5-RRC信令，向第二远端终端发送映射关系。
在一些可选的实施方式中，中继终端在通过直接通信接口与第一远端终端进行数据传输时，在适配层PDU头中携带第二标识信息；和/或，中继终端在通过直接通信接口与第二远端终端进行数据传输时，在适配层PDU头中携带第二标识信息。
在一些可选的实施方式中，适配层PDU头还包括如下至少一种：通过第一远端终端和第二远端终端之间的端到端直接通信接口的承载标识信息；或者，通过第一远端终端和第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
在此需要说明的是，本公开提供的上述中继终端，能够实现上述方法实施例中中继终端侧所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
图10为本公开实施例提供的远端终端的结构示意图二。如图10所示，远端终端 为第一远端终端或者第二远端终端，第一远端终端与第二远端终端通过中继终端进行端到端通信连接，该远端终端包括：收发机1001、处理器1002和存储器1003。
存储器1003，用于存储计算机程序；
收发机1001，用于在处理器1002的控制下收发数据；
其中，在图10中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1002代表的一个或多个处理器和存储器1003代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1001可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元，这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器1002负责管理总线架构和通常的处理，存储器1003可以存储处理器1002在执行操作时所使用的数据。
处理器1002负责管理总线架构和通常的处理，存储器1003可以存储处理器1002在执行操作时所使用的数据。
可选的，处理器1002可以是中央处埋器(central processing unit，CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)，处理器也可以采用多核架构。
处理器1002通过调用存储器1003存储的计算机程序，用于按照获得的可执行指令执行本公开实施例提供的有关目标中继终端的任一终端接入方法。处理器1002与存储器1003也可以物理上分开布置。
具体的，处理器1002用于读取存储器1003中的计算机程序并执行以下操作：获取第一标识信息和第二标识信息的映射关系；根据映射关系，确定适配层PDU头格式；其中，第一标识信息包括直接通信接口使用的源地址和目标地址，或者第一标识信息包括源地址、目标地址和传输类型，第二标识信息的比特数小于第一标识信息的比特数。
在一些可选的实施方式中，获取第一标识信息和第二标识信息的映射关系，包括：接收中继终端发送的映射关系；或者，根据第一标识信息和第二标识信息，确定映射关系。
在一些可选的实施方式中，接收中继终端发送的映射关系，包括：获取第一标识信息；通过第一远端终端和中继终端之间的第一PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息，并接收中继终端通过第一PC5-RRC信令发送的映射关系；和/或，通过第二远端终端和中继终端之间的第二PC5-RRC信令，向中继终端发送第二指示信息和第一标识信息，并接收中继终端通过第二PC5-RRC信令发送的映射关系。
在一些可选的实施方式中，根据第一标识信息和第二标识信息，确定映射关系， 包括：获取第一标识信息；确定当前未被占用的候选第二标识信息为中继终端当前可用的第二标识信息；针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
在一些可选的实施方式中，获取第一标识信息，包括：第一远端终端的高层通过PC5-S信令过程获取第一标识信息，并向第一远端终端的低层发送携带第一标识信息的第三指示信息，以使第一远端终端的低层通过第三指示信息获取第一标识信息；或者，通过第一远端终端的低层进行端到端的PC5-RRC信令交互过程，获得第一标识信息。
在一些可选的实施方式中，处理器还用于执行如下至少一项：第一远端终端通过第一PC5-RRC信令，向中继终端发送映射关系；或者，第二远端终端通过第二PC5-RRC信令，向中继终端发送映射关系；或者，第一远端终端通过第一远端终端和第二远端终端之间端到端的第三PC5-RRC信令，向第二远端终端发送映射关系；或者，第二远端终端通过第三PC5-RRC信令，向第一远端终端发送映射关系。
在一些可选的实施方式中，第一远端终端和第二远端终端在通过直接通信接口进行数据传输时，在适配层PDU头中携带第二标识信息；和/或，远端终端在通过直接通信接口与中继终端行数据传输时，在适配层PDU头中携带第二标识信息。
在一些可选的实施方式中，中继终端的适配层PDU头包括第二标识信息，以及如下至少一种：通过第一远端终端和第二远端终端之间的端到端直接通信接口的承载标识信息；或者，通过第一远端终端和第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
在此需要说明的是，本公开提供的上述远端终端，能够实现上述方法实施例中第一远端终端或者第二远端终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
需要说明的是，本公开实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
上述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个处理器可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本公开各个实施例方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access  Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
在中继终端侧，本公开实施例提供了一种处理器可读存储介质，处理器可读存储介质存储有计算机程序，计算机程序用于使得处理器能够实现上述方法实施例中中继终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在终端侧，本公开实施例提供了一种处理器可读存储介质，处理器可读存储介质存储有计算机程序，计算机程序用于使得处理器能够实现上述方法实施例中远端终端侧所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。其中，处理器可读存储介质可以是处理器能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。
在中继终端侧，本公开的一实施例还提供一种包含指令的计算机程序产品，计算机程序存储在存储介质中，至少一个处理器可以从存储介质中读取计算机程序，至少一个处理器执行计算机程序时可实现上述方法实施例中中继终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在远端终端侧，本公开的一实施例还提供一种包含指令的计算机程序产品，计算机程序存储在存储介质中，至少一个处理器可以从存储介质中读取计算机程序，至少一个处理器执行计算机程序时可实现上述方法实施例中远端终端所实现的所有方法步骤，且能够达到相同的技术效果，在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
本公开实施例还提供一种通信系统，包括中继终端、第一远端终端和第二远端终端。其中，中继终端能够执行上述方法实施例中中继终端侧所执行的所有方法步骤，且能够达到相同的技术效果。第一远端终端和第二远端终端能够执行上述方法实施例中远端终端侧所执行的所有方法步骤，且能够达到相同的技术效果。在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
本领域内的技术人员应明白，本公开的实施例可提供为方法、系统、或计算机程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、装置、和计算机程序产品的信令交互示意图和/或方框图来描述的。应理解可由计算机可执行指令实现信令交互示意图和/ 或方框图中的每一流程和/或方框、以及信令交互示意图和/或方框图中的流程和/或方框的结合。可提供这些计算机可执行指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在信令交互示意图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些处理器可执行指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的处理器可读存储器中，使得存储在该处理器可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在信令交互示意图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些处理器可执行指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在信令交互示意图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (41)

  1. 一种信息处理方法，其特征在于，应用于中继终端，所述信息处理方法包括：
    获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，所述第一远端终端和所述第二远端终端通过所述中继终端进行端到端通信连接；
    确定所述第一标识信息与第二标识信息之间的映射关系；
    向所述第一远端终端和/或所述第二远端终端发送所述映射关系；其中，所述第一标识信息包括所述直接通信接口使用的源地址和目标地址，或者所述第一标识信息包括所述源地址、所述目标地址和传输类型，所述第二标识信息的比特数小于所述第一标识信息的比特数。
  2. 根据权利要求1所述的信息处理方法，其特征在于，所述获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，包括：接收所述第一远端终端和/或所述第二远端终端发送的所述第一标识信息；或者，所述中继终端的低层从所述中继终端的高层获取所述第一标识信息。
  3. 根据权利要求2所述的信息处理方法，其特征在于，所述接收所述第一远端终端和/或所述第二远端终端发送的所述第一标识信息，包括：接收所述第一远端终端通过第一直接通信接口无线资源控制PC5-RRC信令发送的所述第一标识信息；和/或，接收所述第二远端终端通过第二PC5-RRC信令发送的所述第一标识信息。
  4. 根据权利要求2所述的信息处理方法，其特征在于，所述中继终端的低层从所述中继终端的高层获取所述第一标识信息，包括：所述中继终端的高层通过PC5-S信令过程获取所述第一标识信息，向所述中继终端的低层发送携带所述第一标识信息的第一指示信息，以使所述中继终端的低层通过所述第一指示信息获取所述第一标识信息。
  5. 根据权利要求1所述的信息处理方法，其特征在于，所述确定所述第一标识信息与第二标识信息之间的对应关系，包括：接收所述第一远端终端和/或所述第二远端终端发送的第二指示信息，根据所述第二指示信息，确定所述第一标识信息和第二标识信息的映射关系；或者，根据所述第一标识信息和当前可用的第二标识信息，确定所述第一标识信息和所述第二标识信息的映射关系。
  6. 根据权利要求5所述的信息处理方法，其特征在于，所述根据所述第一标识信息和当前可用的第二标识信息，确定所述第一标识信息和所述第二标识信息的映射关系，包括：确定当前未被占用的候选第二标识信息为当前可用的第二标识信息；针对所述第一标识信息，从当前可用的第二标识信息中选择所述第二标识信息；根据所述第二标识信息，确定所述第一标识信息和所述第二标识信息的映射关系。
  7. 根据权利要求1至6中任一项所述的信息处理方法，其特征在于，所述向所述第一远端终端和/或所述第二远端终端发送所述第一标识信息和所述第二标识信息的映射关系，包括：通过所述中继终端和所述第一远端终端之间的第一PC5-RRC信令， 向所述第一远端终端发送所述映射关系；和/或，通过所述中继终端和所述第二远端终端之间的第二PC5-RRC信令，向所述第二远端终端发送所述映射关系。
  8. 根据权利要求1至6中任一项所述的信息处理方法，其特征在于，所述中继终端在通过直接通信接口与所述第一远端终端进行数据传输时，在适配层协议单元PDU头中携带所述第二标识信息；和/或，所述中继终端在通过直接通信接口与所述第二远端终端进行数据传输时，在适配层PDU头中携带所述第二标识信息。
  9. 根据权利要求8所述的信息处理方法，其特征在于，所述适配层PDU头中还包括如下至少一种：所述第一远端终端和所述第二远端终端之间的端到端直接通信接口的承载标识信息；或者，所述第一远端终端和所述第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
  10. 一种信息处理方法，其特征在于，应用于第一远端终端或者第二远端终端，所述第一远端终端通过中继终端与所述第二远端终端进行端到端通信连接，所述信息处理方法包括：
    获取第一标识信息和第二标识信息的映射关系；根据所述映射关系，确定适配层PDU头格式；其中，所述第一标识信息包括直接通信接口使用的源地址和目标地址，或者所述第一标识信息包括所述源地址、所述目标地址和传输类型，所述第二标识信息的比特数小于所述第一标识信息的比特数。
  11. 根据权利要求10所述的信息处理方法，其特征在于，所述获取所述第一标识信息和第二标识信息的映射关系，包括：接收所述中继终端发送的所述映射关系；或者，根据所述第一标识信息和所述第二标识信息，确定所述映射关系。
  12. 根据权利要求11所述的信息处理方法，其特征在于，所述接收所述中继终端发送的所述映射关系，包括：获取所述第一标识信息；
    通过所述第一远端终端和所述中继终端之间的第一PC5-RRC信令，向所述中继终端发送第二指示信息和所述第一标识信息，并接收所述中继终端通过所述第一PC5-RRC信令发送的所述映射关系；
    和/或，通过所述第二远端终端和所述中继终端之间的第二PC5-RRC信令，向所述中继终端发送第二指示信息和所述第一标识信息，并接收所述中继终端通过所述第二PC5-RRC信令发送的所述映射关系。
  13. 根据权利要求11所述的信息处理方法，其特征在于，所述根据所述第一标识信息和所述第二标识信息，确定所述映射关系，包括：获取所述第一标识信息；
    确定当前未被占用的候选第二标识信息为当前可用的第二标识信息；针对所述第一标识信息，从当前可用的第二标识信息中选择所述第二标识信息；所述第二标识信息，确定所述第一标识信息和所述第二标识信息的映射关系。
  14. 根据权利要求12或13所述的信息处理方法，其特征在于，所述获取所述第一标识信息，包括：
    所述第一远端终端的高层通过PC5-S信令过程获取所述第一标识信息，并向所述第一远端终端的低层发送携带所述第一标识信息的第三指示信息，以使所述第一远端终端的低层通过所述第三指示信息获取所述第一标识信息；或者，通过所述第一远端终端的低层进行端到端的PC5-RRC信令交互过程，获得所述第一标识信息。
  15. 根据权利要求13所述的信息处理方法，其特征在于，还包括如下至少一项：
    所述第一远端终端通过第一PC5-RRC信令，向所述中继终端发送所述映射关系；或者，所述第二远端终端通过第二PC5-RRC信令，向所述中继终端发送所述映射关系；或者，所述第一远端终端通过所述第一远端终端和所述第二远端终端之间端到端的第三PC5-RRC信令，向所述第二远端终端发送所述映射关系；或者，所述第二远端终端通过所述第三PC5-RRC信令，向所述第一远端终端发送所述映射关系。
  16. 根据权利要求10至15中任一项所述的信息处理方法，其特征在于，所述第一远端终端和所述第二远端终端在通过直接通信接口进行数据传输时，在适配层协议单元PDU头中携带所述第二标识信息；和/或，所述远端终端在通过直接通信接口与所述中继终端行数据传输时，在适配层PDU头中携带所述第二标识信息。
  17. 根据权利要求16所述的信息处理方法，其特征在于，所述适配层PDU头还包括如下至少一种：所述第一远端终端和所述第二远端终端之间的端到端直接通信接口的承载标识信息；或者，所述第一远端终端和所述第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
  18. 一种中继终端，其特征在于，包括：获取模块，用于获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，所述第一远端终端和所述第二远端终端通过所述中继终端进行端到端通信连接；确定模块，用于确定所述第一标识信息与第二标识信息之间的映射关系；发送模块，用于向所述第一远端终端和/或所述第二远端终端发送所述映射关系；
    其中，所述第一标识信息包括所述直接通信接口使用的源地址和目标地址，或者所述第一标识信息包括所述源地址、所述目标地址和传输类型，所述第二标识信息的比特数小于所述第一标识信息的比特数。
  19. 根据权利要求18所述的中继终端，其特征在于，所述获取模块具体用于：接收第一远端终端和/或第二远端终端发送的第一标识信息；或者，中继终端的低层从中继终端的高层获取第一标识信息。
  20. 根据权利要求18所述的中继终端，其特征在于，所述获取模块具体用于：接收第一远端终端和/或第二远端终端发送的第二指示信息，根据第二指示信息确定第一标识信息和第二标识信息的映射关系；或者，根据第一标识信息和中继终端当前可用的第二标识信息，确定第一标识信息和第二标识信息的映射关系。
  21. 一种远端终端，其特征在于，所述远端终端为第一远端终端或者第二远端终端，所述第一远端终端和所述第二远端终端通过中继终端进行端到端通信连接，所述 远端终端包括：
    获取模块，用于获取第一标识信息和第二标识信息的映射关系；确定模块，用于根据所述映射关系，确定适配层PDU头格式；其中，所述第一标识信息包括直接通信接口使用的源地址和目标地址，或者所述第一标识信息包括所述源地址、所述目标地址和传输类型，所述第二标识信息的比特数小于所述第一标识信息的比特数。
  22. 根据权利要求21所述的远端终端，其特征在于，所述获取模块具体用于：获取第一标识信息；确定当前未被占用的候选第二标识信息为中继终端当前可用的第二标识信息；针对第一标识信息，从中继终端当前可用的第二标识信息中选择第二标识信息；根据第二标识信息，确定第一标识信息和第二标识信息的映射关系。
  23. 根据权利要求22所述的远端终端，其特征在于，所述远端终端还包括，发送模块，用于第一远端终端通过第一PC5-RRC信令，向中继终端发送映射关系；或者，用于第二远端终端通过第二PC5-RRC信令，向中继终端发送映射关系；或者，用于第一远端终端通过第一远端终端和第二远端终端之间端到端的第三PC5-RRC信令，向第二远端终端发送映射关系；或者，用于第二远端终端通过第三PC5-RRC信令，向第一远端终端发送映射关系。
  24. 一种中继终端，其特征在于，包括：
    存储器，用于存储计算机程序；
    收发机，用于在处理器的控制下收发数据；
    处理器，用于读取所述存储器中的计算机程序并执行以下操作：获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，所述第一远端终端和所述第二远端终端通过所述中继终端进行端到端通信连接；确定所述第一标识信息与第二标识信息之间的映射关系；向所述第一远端终端和/或所述第二远端终端发送所述映射关系；其中，所述第一标识信息包括所述直接通信接口使用的源地址和目标地址，或者所述第一标识信息包括所述源地址、所述目标地址和传输类型，所述第二标识信息的比特数小于所述第一标识信息的比特数。
  25. 根据权利要求24所述的中继终端，其特征在于，所述获取第一远端终端和第二远端终端在直接通信接口使用的第一标识信息，包括：接收所述第一远端终端和/或所述第二远端终端发送的所述第一标识信息；或者，所述中继终端的低层从所述中继终端的高层获取所述第一标识信息。
  26. 根据权利要求25所述的中继终端，其特征在于，所述接收所述第一远端终端和/或所述第二远端终端发送的所述第一标识信息，包括：接收所述第一远端终端通过第一PC5-RRC信令发送的所述第一标识信息；和/或，接收所述第二远端终端通过第二PC5-RRC信令发送的所述第一标识信息。
  27. 根据权利要求25所述的中继终端，其特征在于，所述中继终端的低层从所述中继终端的高层获取所述第一标识信息，包括：所述中继终端的高层通过PC5-S信令 过程获取所述第一标识信息，向所述中继终端的低层发送携带所述第一标识信息的第一指示信息，所述中继终端的低层通过所述第一指示信息获取所述第一标识信息。
  28. 根据权利要求24所述的中继终端，其特征在于，所述确定所述第一标识信息与第二标识信息之间的映射关系包括：接收所述第一远端终端和/或所述第二远端终端发送的第二指示信息，根据所述第二指示信息确定所述第一标识信息和第二标识信息的映射关系；或者，根据所述第一标识信息和当前可用的第二标识信息，确定所述第一标识信息和所述第二标识信息的映射关系。
  29. 根据权利要求28所述的中继终端，其特征在于，所述根据所述第一标识信息和当前可用的第二标识信息，确定所述第一标识信息和所述第二标识信息的映射关系，包括：确定当前未被占用的候选第二标识信息为当前可用的第二标识信息；针对所述第一标识信息，从当前可用的第二标识信息中选择所述第二标识信息；根据所述第二标识信息，确定所述第一标识信息和所述第二标识信息的映射关系。
  30. 根据权利要求24至29中任一项所述的中继终端，其特征在于，所述向所述第一远端终端和/或所述第二远端终端发送所述第一标识信息和所述第二标识信息的映射关系，包括：通过所述中继终端和所述第一远端终端之间的第一PC5-RRC信令，向所述第一远端终端发送所述映射关系；和/或，通过所述中继终端和所述第二远端终端之间的第二PC5-RRC信令，向所述第二远端终端发送所述映射关系。
  31. 根据权利要求24至29中任一项所述的中继终端，其特征在于，所述中继终端在通过直接通信接口与所述第一远端终端进行数据传输时，在适配层协议单元PDU头中携带所述第二标识信息；和/或，所述中继终端在通过直接通信接口与所述第二远端终端进行数据传输时，在适配层PDU头中携带所述第二标识信息。
  32. 根据权利要求31所述的中继终端，其特征在于，所述适配层PDU头还包括如下至少一种：所述第一远端终端和所述第二远端终端之间的端到端直接通信接口的承载标识信息；或者，所述第一远端终端和所述第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
  33. 一种远端终端，其特征在于，所述远端终端为第一远端终端或者第二远端终端，所述第一远端终端通过中继终端与所述第二远端终端进行端到端通信连接，所述远端终端包括：
    存储器，用于存储计算机程序；
    收发机，用于在处理器的控制下收发数据；
    处理器，用于读取所述存储器中的计算机程序并执行以下操作：获取第一标识信息和第二标识信息的映射关系；根据所述映射关系，确定适配层PDU头格式；其中，所述第一标识信息包括直接通信接口使用的源地址和目标地址，或者所述第一标识信息包括所述源地址、所述目标地址和传输类型，所述第二标识信息的比特数小于所述第一标识信息的比特数。
  34. 根据权利要求33所述的远端终端，其特征在于，所述获取所述第一标识信息和第二标识信息的映射关系，包括：接收中继终端发送的所述映射关系；或者，根据所述第一标识信息和所述第二标识信息，确定所述映射关系。
  35. 根据权利要求34所述的远端终端，其特征在于，所述接收中继终端发送的所述映射关系，包括：获取所述第一标识信息；
    通过所述第一远端终端和所述中继终端之间的第一PC5-RRC信令，向所述中继终端发送第二指示信息和所述第一标识信息，并接收所述中继终端通过所述第一PC5-RRC信令发送的所述映射关系；和/或，通过所述第二远端终端和所述中继终端之间的第二PC5-RRC信令，向所述中继终端发送第二指示信息和所述第一标识信息，并接收所述中继终端通过所述第二PC5-RRC信令发送的所述映射关系。
  36. 根据权利要求33所述的远端终端，其特征在于，所述根据所述第一标识信息和所述第二标识信息，确定所述映射关系，包括：获取所述第一标识信息；确定当前未被占用的候选第二标识信息为当前可用的第二标识信息；针对所述第一标识信息，从当前可用的第二标识信息中选择所述第二标识信息；根据所述第二标识信息，确定所述第一标识信息和所述第二标识信息的映射关系。
  37. 根据权利要求35或36所述的远端终端，其特征在于，所述获取所述第一标识信息，包括：
    所述第一远端终端的高层通过PC5-S信令过程获取所述第一标识信息，并向所述第一远端终端的低层发送携带所述第一标识信息的第三指示信息，以使所述第一远端终端的低层通过所述第三指示信息获取所述第一标识信息；或者，通过所述第一远端终端的低层进行端到端的PC5-RRC信令交互过程，获得所述第一标识信息。
  38. 根据权利要求35所述的远端终端，其特征在于，所述处理器还用于执行如下至少一项：
    所述第一远端终端通过第一PC5-RRC信令，向所述中继终端发送所述映射关系；或者，所述第二远端终端通过第二PC5-RRC信令，向所述中继终端发送所述映射关系；或者，所述第一远端终端通过所述第一远端终端和所述第二远端终端之间端到端的第三PC5-RRC信令，向所述第二远端终端发送所述映射关系；或者，所述第二远端终端通过所述第三PC5-RRC信令，向所述第一远端终端发送所述映射关系。
  39. 根据权利要求33至38中任一项所述的远端终端，其特征在于，所述第一远端终端和所述第二远端终端在通过直接通信接口进行数据传输时，在适配层协议单元PDU头中携带所述第二标识信息；和/或，所述远端终端在通过直接通信接口与所述中继终端行数据传输时，在适配层PDU头中携带所述第二标识信息。
  40. 根据权利要求39所述的远端终端，其特征在于，所述适配层PDU头还包括如下至少一种：
    所述第一远端终端和所述第二远端终端之间的端到端直接通信接口的承载标识信 息；或者，所述第一远端终端和所述第二远端终端之间的端到端直接通信接口的逻辑信道标识LCID。
  41. 一种处理器可读存储介质，其特征在于，所述处理器可读存储介质存储有计算机程序，所述计算机程序用于使处理器执行如权利要求1至9中任一项所述的信息处理方法，或者，执行如权利要求10至17中任一项所述的信息处理方法。
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