WO2018176416A1 - 中继通信方法、装置和系统 - Google Patents

中继通信方法、装置和系统 Download PDF

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Publication number
WO2018176416A1
WO2018176416A1 PCT/CN2017/079116 CN2017079116W WO2018176416A1 WO 2018176416 A1 WO2018176416 A1 WO 2018176416A1 CN 2017079116 W CN2017079116 W CN 2017079116W WO 2018176416 A1 WO2018176416 A1 WO 2018176416A1
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WO
WIPO (PCT)
Prior art keywords
bearer
relay
terminal
relay terminal
message
Prior art date
Application number
PCT/CN2017/079116
Other languages
English (en)
French (fr)
Inventor
王静
肖潇
蔺波
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201780085180.XA priority Critical patent/CN110326359B/zh
Priority to JP2019553259A priority patent/JP6884879B2/ja
Priority to EP17903348.5A priority patent/EP3598840B1/en
Priority to AU2017406570A priority patent/AU2017406570B9/en
Priority to CN202111484912.7A priority patent/CN114501579A/zh
Priority to PCT/CN2017/079116 priority patent/WO2018176416A1/zh
Priority to BR112019020398A priority patent/BR112019020398A2/pt
Priority to KR1020197032340A priority patent/KR102305715B1/ko
Publication of WO2018176416A1 publication Critical patent/WO2018176416A1/zh
Priority to US16/584,154 priority patent/US11229067B2/en
Priority to US17/555,066 priority patent/US11770865B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • 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
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • 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 application relates to the field of communications technologies, and in particular, to a relay communication method, apparatus, and system.
  • wearable devices With the advent and increasing popularity of smart watches, smart bracelets, and smart glasses, wearable devices have become more popular and popular. Wearable device-based applications and communication technologies for wearable devices have also become research hotspots in the global communications industry.
  • a wearable device usually establishes a wireless connection with a cellular network (for example, a Long Term Evolution (LTE) network) by means of a relay terminal (for example, a smart phone). Connect and communicate, so that users can directly carry out data transmission of various services with the network through various applications (English: Application, abbreviation: APP) on the wearable device.
  • the communication method of the relay device that is relayed by the relay terminal is also referred to as a user equipment (User Equipment, UE for short)-network relay (UE-to-Network Relay) transmission.
  • UE User Equipment
  • a layer 2 relay function is added in the communication protocol stack architecture of the relay terminal, and the layer 2 relay function is located in the radio link control (English: Radio Link Control, referred to as: RLC) Above layer (excluding RLC layer), Internet protocol (English: Internet Protocol, IP for short) or Radio Resource Control (RRC) layer (excluding IP layer and RRC layer),
  • RLC Radio Link Control
  • Above layer excluding RLC layer
  • Internet protocol English: Internet Protocol, IP for short
  • RRC Radio Resource Control
  • the relay function is not included in the communication protocol stack architecture of the current terminal and the access network device. Therefore, the access network device cannot configure the relay function of the relay terminal, and thus does not support the use of the relay function.
  • the configuration of the relay bearer of the relay terminal is not included in the communication protocol stack architecture of the current terminal and the access network device.
  • the embodiment of the present invention provides a relay communication method, apparatus, and system.
  • an embodiment of the present invention provides a relay communication method, where the method includes: a relay terminal receives a first message sent by an access network device, where the first message includes configuration information of a first bearer; Configuring an adaptation layer logical entity for the first bearer according to the first message, where the first bearer is a bearer between the relay terminal and the access network device, and the adaptation layer logical entity It is used to distinguish the data of the relay terminal and the remote terminal, or the data of different remote terminals.
  • the configuration information of the first bearer includes a first bearer identifier and an adaptation function configuration information.
  • the adaptation function configuration information includes an identifier of the remote terminal and/or a bearer identifier of the remote terminal.
  • the relay terminal configures an adaptation layer logic entity for the first bearer according to the first message, and may include the following situations:
  • the first type of the relay terminal does not establish the first bearer, and the first bearer is newly created according to the first message.
  • the first bearer does not exist in the existing bearer of the relay terminal, and the relay terminal establishes the first bearer, and establishes an adaptation for the first bearer according to the configuration information of the adaptation function.
  • Layer logical entity
  • the second type of the relay terminal has established the first bearer, and configures the adaptation layer logical entity of the first bearer according to the adaptation function configuration information.
  • the configuration herein may include establishing an adaptation layer logical entity for the first bearer; or reconfiguring the adaptation layer logical entity of the first bearer; or releasing the adaptation layer logical entity of the first bearer.
  • the configuration information of the first bearer includes a first bearer identifier and bearer release indication information.
  • the relay terminal configures the adaptation layer logical entity for the first bearer according to the first message, where the relay terminal has established the first bearer, and the relay terminal releases the first bearer according to the first message.
  • releasing the first bearer includes: releasing resources of the first bearer, where resources of the first bearer include an adaptation layer logic entity.
  • the configuration information of the first bearer includes a first bearer identifier and a bearer type
  • the bearer type is a relay bearer or a normal bearer
  • the relay bearer is used to transmit a remote terminal.
  • the data is used to transmit data of the remote terminal and the relay terminal
  • the normal bearer is used to transmit data of the relay terminal.
  • the relay terminal configures an adaptation layer logic entity for the first bearer according to the first message, and may include the following situations:
  • the first type the relay terminal does not establish the first bearer, and the bearer type in the first message is a relay bearer, and the first bearer is newly created according to the first message.
  • the first bearer does not exist in the existing bearer of the relay terminal, and the relay terminal establishes the first bearer, and establishes an adaptation layer logical entity for the first bearer.
  • the second type of the relay terminal has established the first bearer, and the adaptation layer logical entity of the first bearer is configured according to the bearer type.
  • the method may include: when the first bearer in the existing bearer is a normal bearer and the bearer type is a relay bearer, establishing an adaptation layer logical entity for the first bearer, thereby modifying the normal bearer to medium If the first bearer in the existing bearer is a relay bearer and the bearer type is a normal bearer, the adaptation layer logical entity of the first bearer is released, thereby modifying the relay bearer to Ordinary bearer.
  • an embodiment of the present invention provides a relay communication method, where the method includes: determining, by an access network device, configuration information of a first bearer, where the first bearer is the access network device and a relay terminal
  • the bearer is configured to send the first message to the relay terminal, where the first message includes configuration information of the first bearer, and configuration information of the first bearer is used to indicate the relay
  • the terminal configures an adaptation layer logical entity for the first bearer, where the adaptation layer logic entity is used to distinguish data of the relay terminal and the remote terminal, or data of different remote terminals.
  • the access network device instructs the relay terminal to configure the adaptation layer logical entity for the first bearer by using the first message, so that the relay inheritance of the relay terminal adopting the L2 relay protocol stack can be supported.
  • Loaded configuration there are multiple L2 relay protocol stacks, and the protocol stacks with relay functions above the RLC layer (excluding the RLC layer), the IP layer or below the RRC layer (excluding the IP layer and the RRC layer) belong to the L2 relay protocol stack.
  • the adaptation layer logical entity is configured for the first bearer, including establishing, modifying, or releasing the adaptation layer logical entity.
  • the adaptation layer logical entity is specifically configured to distinguish whether the data is from/to the remote terminal or the relay terminal, or distinguish which bearer of the data belongs to the remote terminal, or distinguish from the remote terminal to/from the remote terminal.
  • the first message may be an RRC connection reconfiguration message, an RRC connection setup message, or other authorization message sent by the access network device to the relay terminal.
  • the adaptation layer logical entity may be an adaptation function of an adaptation protocol entity or a PDCP protocol entity.
  • the adaptation function configuration information further includes an opening or closing indication, the opening or closing indication is used to instruct the relay terminal to enable or disable the adaptation function of the PDCP protocol entity.
  • an embodiment of the present invention provides a relay communication method, which generates a MAC PDU, and the MAC PDU includes a packet.
  • the MAC CE includes an identifier of the remote terminal, and the MAC PDU carries the data of the remote terminal signaling bearer SRB0; and the MAC PDU is sent.
  • the relay communication method of the third aspect may be performed by the access network device or by the remote terminal.
  • the data of SRB0 When executed by the access network device, the data of SRB0 may be an RRC connection setup message, and when executed by the remote terminal, the data of SRB0 may be an RRC connection setup request.
  • an embodiment of the present invention provides a relay communication method, where the method includes: receiving a MAC PDU, where the MAC PDU includes a media access control protocol control element MAC CE, where the MAC CE includes a remote terminal. And the MAC PDU carries the data of the remote terminal's signaling bearer SRB0; obtains the identifier of the remote terminal from the MAC CE of the MAC PDU; and sends the MAC PDU.
  • the identifier of the remote terminal is a local identifier of the remote terminal, where the local identifier is used to identify the remote end between the access network device and the relay terminal The identity of the terminal. When implemented, it can be allocated by an access network device or a relay terminal.
  • an embodiment of the present invention provides a relay communication apparatus, where the apparatus includes a unit, such as a receiving unit and a configuration unit, for implementing the method according to the first aspect.
  • an embodiment of the present invention provides a relay communication apparatus, where the apparatus includes a unit, such as a generating unit and a sending unit, for implementing the method according to the second aspect.
  • an embodiment of the present invention provides a relay communication apparatus, where the apparatus includes a unit, such as a generating unit and a sending unit, for implementing the method of the third aspect.
  • an embodiment of the present invention provides a relay communication apparatus, where the apparatus includes a unit, such as a receiving unit, an obtaining unit, and a sending unit, for implementing the method according to the fourth aspect.
  • an embodiment of the present invention further provides a relay communication apparatus, configured to: relay a terminal, where the apparatus includes: a memory, a processor connected to the memory, where the memory is used to store a software program and a module, when The method of the first aspect or the fourth aspect may be performed when the processor is configured to execute or execute a software program and a module stored in the memory.
  • an embodiment of the present invention further provides a relay communication device, configured to access a network device, where the device includes: a memory, a processor connected to the memory, where the memory is used to store a software program and a module, The method of the second aspect or the third aspect may be performed when the processor is configured to execute or execute a software program and a module stored in the memory.
  • the embodiment of the present invention further provides a computer readable medium for storing program code for execution by a terminal, the program code comprising instructions for performing the method of the first aspect or the fourth aspect.
  • the embodiment of the present invention further provides a computer readable medium, configured to store program code for execution by an access network device, the program code comprising the method of the second aspect or the third aspect instruction.
  • the embodiment of the present invention further provides a communication chip, which is applied in a mobile communication system device, where the communication chip includes: a processor, a memory, and a communication interface; the processor, the memory, and the communication interface pass through the bus.
  • the memory is for storing program instructions
  • the processor enables the communication system device loaded with the communication chip to perform the first aspect, the second aspect, the first aspect, by executing program instructions stored in the memory
  • the method provided by any one of the three aspects or the fourth aspect.
  • the embodiment of the present invention further provides a relay communication system, where the system includes an access network device, a relay terminal, and a remote terminal, where the access network device includes the relay communication device provided by the sixth aspect.
  • the relay terminal includes the fifth A relay communication device provided by the aspect.
  • the access network device includes the relay communication device provided by the ninth aspect
  • the relay terminal includes the relay communication device provided by the tenth aspect.
  • the embodiment of the present invention further provides a relay communication system, where the system includes an access network device, a relay terminal, and a remote terminal, where the access network device and the remote terminal include the seventh aspect.
  • a relay communication device, the relay terminal comprising the relay communication device provided in the eighth aspect.
  • FIG. 1 is a schematic structural diagram of a relay communication system according to an embodiment of the present invention.
  • 2a is a schematic diagram of a wireless protocol stack used when a terminal communicates with an access network device
  • 2b is a schematic diagram of a wireless protocol stack used when a remote terminal communicates with an access network device through a relay terminal;
  • 3a is a flowchart of a bearer establishment process between an existing terminal and an access network device
  • FIG. 3b is a flowchart of a bearer modification process between an existing terminal and an access network device
  • FIG. 3c is a flowchart of a bearer release process between an existing terminal and an access network device
  • FIG. 4 is a schematic structural diagram of hardware of an access network device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of hardware of a terminal according to an embodiment of the present disclosure.
  • FIG. 6 is a flowchart of a method for relay communication according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of another method for relay communication according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of still another method for relay communication according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of still another relay communication method according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of still another method for relay communication according to an embodiment of the present invention.
  • FIG. 11 is a flowchart of still another relay communication method according to an embodiment of the present invention.
  • FIG. 12 is a flowchart of still another relay communication method according to an embodiment of the present invention.
  • FIG. 13a is a flowchart of still another method for relay communication according to an embodiment of the present invention.
  • FIG. 13b is a flowchart of still another method for relay communication according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a format of a MAC PDU according to an embodiment of the present disclosure.
  • FIG. 15 is a structural block diagram of a relay communication apparatus according to an embodiment of the present invention.
  • FIG. 16 is a structural block diagram of another relay communication apparatus according to an embodiment of the present invention.
  • FIG. 17 is a structural block diagram of another relay communication apparatus according to an embodiment of the present invention.
  • FIG. 18 is a structural block diagram of another relay communication apparatus according to an embodiment of the present invention.
  • FIG. 19 is a structural diagram of a communication chip according to an embodiment of the present invention.
  • a “module” as referred to herein refers to a program or instruction stored in a memory that is capable of implementing certain functions;
  • "unit” as referred to herein refers to a functional structure that is logically divided, the “unit” may be Pure hardware implementation, or a combination of hardware and software.
  • FIG. 1 shows a relay communication system according to an embodiment of the present invention.
  • the relay communication system 100 can be an LTE system, a 5G system, or a subsequent evolution system thereof.
  • the relay communication system includes an access network device 11, a relay terminal 12, and a remote terminal 13.
  • the remote terminal 13 communicates with the access network device 11 through the relay terminal 12.
  • the relay terminal 12 and the access network device 11 pass through the cellular network (including the uplink (English: Uplink) and downlink (English: Downlink) are connected.
  • the remote terminal 13 and the relay terminal 12 communicate via a short-range communication link, such as a through link (English: Sidelink), or Bluetooth, or wireless local area network (WLAN).
  • a short-range communication link such as a through link (English: Sidelink), or Bluetooth, or wireless local area network (WLAN).
  • the remote terminal 13 In the uplink transmission direction, that is, the direction from the remote terminal 13 to the access network device 11, when the remote terminal 13 has data transmission, the remote terminal 13 first transmits the data to the relay terminal 12 through the through link, and then, The relay terminal 12 transmits the received data to the access network device 11 through the cellular uplink.
  • the access network device 11 In the downlink transmission direction, that is, from the access network device 11 to the remote terminal 13, the access network device 11 will first transmit data to the relay terminal 12 through the cellular downlink, and then pass through the relay terminal 12 through the direct transmission. The link sends it to the remote terminal 13.
  • the relay terminal 12 may be a smart phone (English: Smartphone), a personal communication service (English: Personal Communication Service, PCS for short), a cordless telephone, a session initiation protocol ( English: Session Initial Protocol (SIP), Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA).
  • the terminal can also be called a system, a subscriber unit (English: Subscriber Unit), a subscriber station (English: Subscriber Station), a mobile station (English: Mobile Station), a mobile station (English: Mobile), a remote station (English: Remote Station).
  • the remote terminal 13 can be a UE, an Internet of Things device, a wearable device, such as a smart bracelet, a smart watch, smart glasses, or the like.
  • the relay terminal 12 communicates with one or more access network devices 11 via a radio access network (English: Radio Access Network, RAN for short).
  • a radio access network English: Radio Access Network, RAN for short.
  • the access network device 11 serves as a router between the relay terminal 12 and the rest of the access network, and the rest of the access network may include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the access network device 11 can also coordinate attribute management of the air interface.
  • the access network device 11 may be a global mobile communication system (English: Global System for Mobile Communication, GSM for short) or a base transceiver station in a code division multiple access (CDMA) system.
  • CDMA code division multiple access
  • BTS Base Transceiver Station
  • WCDMA Wideband Code Division Multiple Access
  • eNB Wideband Code Division Multiple Access
  • One relay terminal 12 may provide a relay function for one or more remote terminals 13 (e.g., one relay terminal 12 in FIG. 1 provides relay functions for two remote terminals 13).
  • one radio bearer RB of the relay terminal 12 may be used to transmit data of one or more RBs of the remote terminal 13, and data of one or more RBs of the remote terminal 13 may be combined with the relay terminal.
  • the data is multiplexed with one RB of the relay terminal at the Uu port (the radio interface between the base station and the UE) for transmission.
  • one RB of the relay terminal 12 is used to transmit data of a plurality of RBs of the remote terminal 13, the plurality of RBs belong to different remote terminals. For example, in FIG. 1, RB1 and RB2 belong to different remote terminals, respectively, but the data on RB1 and RB2 are transmitted by the bearer RB0 of the relay terminal.
  • the RB of the remote terminal refers to the RB between the access network device and the remote terminal, and the RB is a logical Uu bearer; and the RB of the relay terminal refers to the access network device and the medium. Following the RB between the terminals.
  • the RB of the relay terminal is divided into a common bearer and a relay bearer, where the normal bearer refers to an RB that carries only the data of the relay terminal, and the relay bearer refers to the bearer of the remote terminal.
  • the signaling procedure of establishing the RB of the remote terminal may be similar to the signaling procedure of the normal bearer of the establishing the relay terminal, and the message of the RB establishment process of the remote terminal (for example, the RRC connection establishment request message and the RRC connection establishment) The message, etc.) can be forwarded through the relay terminal.
  • the protocol stack used when the relay terminal and the access network device communicate (that is, when communicating based on a normal bearer) is as shown in FIG. 2a.
  • processing by PDCP/RLC/MAC/PHY is required.
  • Establishing an RB means establishing a corresponding PDCP/RLC entity for the RB according to the QoS parameter of the RB, establishing a corresponding logical channel at the MAC layer, and configuring the logical channel.
  • Modifying one RB means modifying the configuration of the corresponding PDCP/RLC entity and the configuration of the logical channel.
  • Releasing one RB means releasing the corresponding PDCP/RLC entity and the logical channel.
  • FIG. 2b shows an L2 trunking protocol stack used by a remote terminal when communicating with an access network device through a relay terminal (i.e., when communicating based on a relay bearer).
  • the L2 relay protocol stack is the same as the UE-network relay wireless protocol stack for wearable device communication defined in the 3rd Generation Partnership Project (3GPP) standard.
  • 3GPP 3rd Generation Partnership Project
  • Uu PDCP Packet Data Convergence Protocol
  • Uu PDCP Packet Data Convergence Protocol
  • radio bearers English: Radio Bearer, RB for short
  • the function includes at least one of the following: adding a packet header to the data of the remote terminal, the packet header including the remote terminal Identifying the radio bearer identifier RBID of the remote terminal for the data; identifying the data of the relay terminal and the remote terminal; identifying the data of the different remote terminals; and identifying the data of the different radio bearers RB of the remote terminal, for making the network side Data from different remote terminals can be distinguished and sent to different core network gateways and servers for subsequent processing.
  • PC5 interface wireless protocol stack below the adaptation protocol layer is the PC5 interface wireless protocol stack, and the PC5 interface wireless protocol stack includes the radio link control layer (English: Radio Link Control, RLC for short) (PC5), media access control protocol (English: Medium Access) Control, abbreviation: MAC) (PC5) and physical layer (English: Physical, abbreviation: PHY) (PC5).
  • the PC5 interface is an interface for direct data communication between the remote terminal and the relay terminal. It is an air interface corresponding to the LTE D2D technology defined in the 3GPP standard.
  • the through link corresponding to the PC5 interface is a “D2D straight-through link”.
  • Uu PDCP Packet Data Convergence Protocol
  • Uu PDCP Packet Data Convergence Protocol
  • radio bearers English: Radio Bearer, RB for short
  • adaptation layer English: Adaptation Layer
  • the adaptation layer can be used to distinguish data of the relay terminal and the remote terminal, or data of different remote terminals.
  • the adaptation layer logic entity is used to distinguish whether the data is from/to the remote terminal or the relay terminal, and which bearer of the remote terminal the data belongs to.
  • the adaptation protocol layer are RLC (Uu), MAC (Uu), and PHY (Uu) for the Uu interface.
  • Figures 3a-3c show the establishment, modification (also referred to as reconfiguration) and release signaling flow of a normal bearer, respectively.
  • the process of establishing, modifying and releasing a normal bearer will be respectively described below with reference to Figs. 3a-3c.
  • the establishment process of a common bearer includes:
  • the mobility management entity (English: Mobility Management Entity, MME for short) sends an evolved radio access bearer (English: Evolved Radio Access Bearer, E-RAB) to establish a request E-RAB SETUP REQUEST To the eNB to trigger the establishment of a normal bearer.
  • MME Mobility Management Entity
  • E-RAB Evolved Radio Access Bearer
  • the eNB After receiving the request, the eNB sends an RRC connection reconfiguration message to the terminal, where the RRC reconfiguration message includes a bearer setup modification list (drb-ToAddModList) in the dedicated radio resource configuration Radio Resource Config Dedication.
  • the RRC reconfiguration message includes a bearer setup modification list (drb-ToAddModList) in the dedicated radio resource configuration Radio Resource Config Dedication.
  • the UE after receiving the RRC connection reconfiguration message, the UE establishes a corresponding PDCP protocol entity and configures corresponding security parameters; establishes and configures the RLC entity; establishes a MAC layer logical channel and performs logical channel configuration.
  • S304a The eNB sends an E-RAB Setup Response E-RAB Setup Response message to the MME.
  • the modification process of the common bearer includes:
  • S301b The MME sends an E-RAB modification request E-RAB MODIFY REQUEST to the eNB to trigger modification of the normal bearer.
  • the eNB After receiving the request, the eNB sends an RRC connection reconfiguration message to the terminal, where the RRC reconfiguration message includes a bearer setup modification list (drb-ToAddModList) in the dedicated radio resource configuration Radio Resource Config Dedicated.
  • the RRC reconfiguration message includes a bearer setup modification list (drb-ToAddModList) in the dedicated radio resource configuration Radio Resource Config Dedicated.
  • the UE after receiving the RRC connection reconfiguration message, the UE reconfigures the corresponding PDCP protocol entity, the RLC entity, and the logical channel;
  • S304b The eNB sends an E-RAB modification response E-RAB Modify Response message to the MME.
  • the release process of the common bearer includes:
  • S301c The MME sends an E-RAB release command E-RAB RELEASE COMMAND to the eNB to trigger the release of the normal bearer.
  • the eNB After receiving the request, the eNB sends an RRC connection reconfiguration message to the terminal, where the RRC reconfiguration message includes a bearer release list (drb-ToReleaseList) in the dedicated radio resource configuration Radio Resource Config Dedicated.
  • the RRC reconfiguration message includes a bearer release list (drb-ToReleaseList) in the dedicated radio resource configuration Radio Resource Config Dedicated.
  • the UE after receiving the RRC connection reconfiguration message, the UE releases the corresponding PDCP protocol entity, the RLC entity, and the logical channel;
  • S304c The eNB sends an E-RAB release response E-RAB RELEASE Response message to the MME.
  • the normal bearer can also be released along with the signaling link.
  • the configuration of the adaptation layer logical entity is not involved in the process of establishing, modifying and releasing the normal bearer. Therefore, the existing protocol stack is used, and the establishment, modification, and release of the relay bearer of the relay terminal that will use the L2 relay protocol stack are not supported.
  • the present application adds configuration function configuration information or bearer type in the RRC connection reconfiguration message (see related description of the embodiment described in FIG. 6 to FIG. 14 below) to implement configuration of the adaptation layer logical entity.
  • the configuration here includes building, modifying, and releasing.
  • the terminal and the access network device provided by the embodiments of the present invention are described below in conjunction with a specific hardware structure.
  • FIG. 4 shows a hardware structure of an access network device 400 according to an embodiment of the present invention.
  • the access network device 400 may be an eNB.
  • the access network device 400 includes: a processor 41. , transceiver 42, memory 43.
  • the processor 41 includes one or more processing cores, and the processor 41 executes various functional applications and information processing by running software programs and modules.
  • the transceiver 42 includes a receiver Rx and a transmitter Tx, and the transceiver 42 can also be implemented as a communication chip, a communication core
  • the chip may include a receiving module, a transmitting module, a modem module, etc., for modulating and demodulating information, and receiving or transmitting the information through a wireless signal.
  • Transceiver 42, memory 43, and processor 41 are coupled by a bus.
  • Memory 43 can be used to store software programs as well as modules.
  • the memory can store an operating system 44, at least one functional application module 45.
  • the application module 45 includes at least a determination module 451 and a transmission module 452.
  • the processor 41 is configured to execute each module in the application module 45 to implement the steps required by the access network device in FIGS. 6-12.
  • the application module 45 includes at least a generation module and a transmission module.
  • the processor 41 is configured to execute each module in the application module 45 to implement the steps required by the access network device in FIGS. 13a-13b.
  • the memory 43 is a computer readable storage medium that can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable and programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable and programmable Read Only Memory
  • EPROM Erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Disk Disk or Optical Disk.
  • the structure of the access network device 400 shown in FIG. 4 does not constitute a limitation on the access network device, and may include more or less components or combinations of certain components than illustrated. Or different parts arrangement.
  • FIG. 5 shows a hardware structure of a terminal 500 according to an embodiment of the present invention.
  • the terminal 500 may be a relay terminal or a remote terminal, and may be a mobile terminal, such as a smart phone.
  • the terminal 500 includes a processor 51, a transceiver 52, and a memory 53.
  • the processor 51 includes one or more processing cores, and the processor 51 executes various functional applications and information processing by running software programs and modules.
  • the transceiver 52 includes a receiver Rx and a transmitter Tx.
  • the transceiver 52 can also be implemented as a communication chip.
  • the communication chip can include a receiving module, a transmitting module, a modem module, and the like, for debugging and demodulating information. The information is received or transmitted via a wireless signal.
  • Transceiver 52, memory 53, and processor 51 are coupled by a bus.
  • Memory 53 can be used to store software programs as well as modules.
  • the memory can store an operating system 54, an application module 55 of at least one function.
  • the application module 55 includes at least a receiving module 551 and a configuration module 552.
  • the processor 51 is configured to execute each module in the application module 55 to implement the steps required by the relay terminal in FIGS. 6-12.
  • the application module 55 includes at least a receiving module, an obtaining module, and a transmitting module.
  • the processor 51 is configured to execute each module in the application module 55 to implement the required execution by the relay terminal in FIGS. 13a-13b. step.
  • the application module 55 includes at least a generation module and a transmission module.
  • the processor 51 is configured to execute each module in the application module 55 to implement the steps required by the remote terminal in FIGS. 13a-13b.
  • the memory 53 is a computer readable storage medium that can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as SRAM, EEPROM, EPROM, PROM, ROM, magnetic memory, flash Memory, disk or disc.
  • the structure of the terminal 500 shown in FIG. 5 does not constitute a limitation to the terminal, and may include more or less components or combinations of components, or different component arrangements.
  • the access network device is used as the base station
  • the relay terminal is the relay user equipment (English:
  • the relay UE is a remote terminal device (English: Remote UE) as an example to describe the embodiment of the present invention in detail.
  • FIG. 6 is a flowchart of a method for relay communication according to an embodiment of the present invention.
  • the relay communication method of the present application is described in detail by taking the relay terminal as a new relay bearer according to the configuration information of the adaptation function. As shown in FIG. 6, the method includes:
  • the base station sends a first message to the relay terminal.
  • the first message may be an RRC connection reconfiguration message, where the configuration information of the first bearer is included.
  • the configuration information of the first bearer includes a first bearer identifier and an adaptation function configuration information.
  • the first bearer is a bearer between the base station and the relay terminal, that is, an RB of the foregoing relay terminal.
  • the first bearer may be a data radio bearer (English: Data Radio Bear, DRB for short) or a signal radio bearer (English: Signalling Radio Bear, SRB for short).
  • DRB Data Radio Bear
  • SRB Signalling Radio Bear
  • the first message includes a bearer setup modification list, and the first bearer identifier is included in the bearer setup modification list.
  • the bearer setup modification list may be classified into a signaling radio bearer setup modification list srb-ToAddModList and a data radio bearer setup modification list drb-ToAddModList, and the signaling radio bearer setup modification list srb-ToAddModList includes a signaling radio bearer.
  • the data radio bearer establishment modification list drb-ToAddModList includes a data radio bearer identifier, and the first message includes at least one of the two lists.
  • the bearer setup modification list may not distinguish between the signaling radio bearer setup modification list and the data radio bearer setup modification list, where the first message includes a list including the signaling radio bearer identifier and the data radio bearer identifier.
  • the first bearer is any bearer with the adapted function configuration information in the bearer setup modification list.
  • the bearer establishment modification list may further include configuration information of the bearer that does not have the configuration function configuration information, and the relay terminal may establish a normal bearer according to the configuration information of the bearer that does not have the configuration function configuration information.
  • first bearer identifier may be a specific value used to uniquely represent a first bearer.
  • the relay terminal receives the first message, and obtains configuration information of the first bearer in the first message.
  • the relay terminal determines whether the first bearer is included in the existing bearer of the relay terminal.
  • the relay terminal determines whether the current bearer identifier is included in the current configuration, and if yes, the existing bearer of the relay terminal includes the first bearer, and if not, the existing bearer of the relay terminal does not include the first bearer.
  • One bearer One bearer.
  • the adaptation layer logical entity may be a single protocol entity, that is, an adaptation protocol entity (referred to as an adaptation layer entity in this application).
  • the adaptation function configuration information adaptation-Config is included as a separate part in the first message.
  • establishing an adaptation layer logical entity for the first bearer includes: establishing an adaptation protocol entity according to the adaptation function configuration information.
  • the adaptation function configuration information includes at least one of an identifier of the remote terminal and a bearer identifier of the remote terminal. The identifier of the remote terminal may be a local identifier of the remote terminal.
  • the local identifier is used to identify the remote terminal between the remote base station and the relay terminal, and may be allocated by the base station or the relay terminal. Further, establishing the adaptation protocol entity includes: performing parameter configuration on the adaptation entity according to the adaptation function configuration information adaptation-Config.
  • the parameter may be a radio bearer identifier of the remote terminal and an identifier of the remote terminal.
  • the adaptation layer logical entity may be a function of the PDCP protocol entity.
  • the adaptation function configuration information is included as an integral part in the PDCP configuration information carried in the first message.
  • the adaptation layer logical entity is established for the bearer corresponding to the first bearer identifier, and the adaptation function of the PDCP protocol entity is enabled.
  • establishing an adaptation layer logical entity for the first bearer includes: establishing a PDCP protocol entity and enabling an adaptation function of the PDCP protocol entity.
  • the adaptation function configuration information may include at least one of the following: an identifier of the remote terminal, a bearer identifier of the remote terminal, and indication information indicating whether the adaptation function of the PDCP protocol entity is enabled,
  • the indication information of the layer entity is used to indicate the indication information of the establishment of the adaptation layer entity.
  • the relay terminal sends a response message of the first message to the base station.
  • the response message of the first message is an RRC connection reconfiguration complete message.
  • FIG. 7 is a flowchart of a method for relay communication according to an embodiment of the present invention.
  • the relay communication method of the present application is described in detail by taking the relay terminal as a relay bearer according to the configuration information of the adaptation function. As shown in FIG. 7, the method includes:
  • S701 The base station sends a first message to the relay terminal.
  • the relay terminal receives the first message, and obtains configuration information of the first bearer in the first message.
  • the relay terminal determines whether the first bearer is included in the existing bearer of the relay terminal.
  • step S703 is the same as that of step S603, and a detailed description is omitted here.
  • determining whether the existing first bearer has an adaptation layer logical entity may be as follows:
  • determining whether the existing first bearer has an adaptation layer logical entity may be as follows:
  • the adaptation function configuration information is included as an integral part in the PDCP configuration information carried in the first message.
  • the adaptation layer logical entity is established for the bearer corresponding to the first bearer identifier, and the adaptation function of the PDCP protocol entity is enabled.
  • establishing an adaptation layer logical entity for the first bearer includes: enabling an adaptation function of the PDCP protocol entity.
  • the adaptation function configuration information may include at least one of the following: an identifier of the remote terminal, a bearer identifier of the remote terminal, and indication information indicating whether the adaptation function of the PDCP protocol entity is enabled,
  • the indication information of the layer entity is used to indicate the indication information of the establishment of the adaptation layer entity.
  • the adaptation layer logical entity may be a single protocol entity, that is, an adaptation layer entity. See step S604, and details are not described herein again.
  • step S604 For the implementation of the content of the adaptation layer logic entity, refer to step S604, and details are not described herein again.
  • the relay terminal sends a response message of the first message to the base station.
  • FIG. 8 is a flowchart of a method for relay communication according to an embodiment of the present invention.
  • the relay communication method of the present application is described in detail by taking the relay terminal as a reconfiguration of the relay bearer according to the adaptation function configuration information.
  • the method includes:
  • S801 The base station sends a first message to the relay terminal.
  • the relay terminal receives the first message, and obtains configuration information of the first bearer in the first message.
  • the relay terminal determines whether the first bearer is included in the existing bearer of the relay terminal.
  • step S703 is the same as that of step S603, and a detailed description is omitted here.
  • step S604 For the manner of determining whether the existing first bearer has the adaptation layer logical entity, refer to step S604, and therefore no further details are provided herein.
  • the adaptation layer logical entity of the first bearer is reconfigured, including adding at least one of a new parameter and modifying the original parameter.
  • the parameter may be at least one of an identifier of a radio bearer of the remote terminal and an identifier of the remote terminal.
  • the relay of the relay terminal carries data of a certain RB of the first remote terminal, and the data of the RB of the second remote terminal is still carried.
  • the identifier of the radio bearer of the second remote terminal and the identifier of the second remote terminal are added to the parameters of the bearer adaptation layer logical entity.
  • the first remote terminal and the second remote terminal are two different terminals.
  • the relay bearer of the relay terminal originally carries data of a certain RB of itself and the first remote terminal, and now the relay bearer is to be changed to carry data of a certain RB of the self and the second remote terminal. And replacing, in the parameters of the adaptation layer logical entity of the first bearer, the identifier of the RB of the first remote terminal and the identifier of the first remote terminal with the identifier of the radio bearer of the second remote terminal and the second far The identifier of the terminal.
  • the relay of the relay terminal carries data of an RB of the first remote terminal and the data of a certain RB of the second remote terminal, and the relay bearer is no longer carried.
  • the data of the RB of the remote terminal of the second remote terminal deletes the identifier of the radio bearer of the second remote terminal and the identifier of the second remote terminal.
  • the relay terminal sends a response message of the first message to the base station.
  • FIG. 9 is a flowchart of a method for relay communication according to an embodiment of the present invention.
  • the relay communication method of the present application is described in detail by taking the relay terminal as the example of modifying the relay bearer of the relay terminal to the normal bearer according to the adaptation function configuration information.
  • the method includes:
  • S901 The base station sends a first message to the relay terminal.
  • the relay terminal receives the first message, and obtains configuration information of the first bearer in the first message.
  • S903 The relay terminal determines whether the first bearer is included in the existing bearer of the relay terminal.
  • step S903 is the same as that of step S603, and a detailed description is omitted here.
  • the adaptation layer logical entity may be a single protocol entity, that is, an adaptation protocol entity (referred to as an adaptation layer entity in this application).
  • the adaptation function configuration information includes indication information indicating that the relay terminal releases the adaptation layer entity
  • the relay terminal releases the adaptation layer logic entity of the first bearer.
  • Release the adaptation layer logical entity of the first bearer includes: releasing the adaptation layer entity.
  • the adaptation layer logical entity may be a function of the PDCP protocol entity.
  • the adaptation function configuration information includes indication information indicating that the adaptation function of the PDCP protocol entity is closed
  • the relay terminal releases the adaptation layer logical entity of the first bearer.
  • the release of the adaptation layer logical entity of the first bearer includes: closing the adaptation layer function of the PDCP protocol entity.
  • the relay terminal sends a response message of the first message to the base station.
  • FIG. 10 is a flowchart of a method for relay communication according to an embodiment of the present invention.
  • the relay communication method of the present application is described in detail by taking the relay terminal as releasing the relay bearer according to the configuration information of the first bearer. As shown in FIG. 10, the method includes:
  • the base station sends a first message to the relay terminal.
  • the first message may be an RRC connection reconfiguration message, where the first bearer identifier and the bearer release indication information are included.
  • the first bearer is a bearer between the base station and the relay terminal, that is, an RB of the foregoing relay terminal.
  • the first bearer may be a data radio bearer or a signaling radio bearer.
  • the first message includes a bearer release list, and the first bearer identifier is included in the bearer release list.
  • the bearer release list may be divided into a signaling radio bearer release list srb-ToReleaseList and a data radio bearer release list drb-ToReleaseList, where the signaling radio bearer release list srb-ToReleaseList includes a signaling radio bearer identifier, and the data
  • the radio bearer release list drb-ToReleaseList includes a data radio bearer identifier, and the first message includes at least one of the two lists.
  • the bearer release list may not distinguish between the signaling radio bearer release list and the data radio bearer release list, and the first message adopts a list including the signaling radio bearer identifier and the data radio bearer identifier.
  • the first bearer is any bearer in the bearer release list that has the adapted function configuration information.
  • the bearer establishment modification list may further include a bearer that does not have the configuration function configuration information.
  • first bearer identifier may be a specific value used to uniquely represent a first bearer.
  • the relay terminal receives the first message, and obtains configuration information of the first bearer in the first message.
  • the relay terminal determines whether the first bearer is included in the existing bearer of the relay terminal.
  • step S603 For the specific judgment manner, refer to step S603, and a detailed description is omitted here.
  • the resource corresponding to the first bearer includes an adaptation layer logic entity.
  • the relay terminal sends a response message of the first message to the base station.
  • FIG. 11 is a flowchart of a method for relay communication according to an embodiment of the present invention.
  • the relay terminal performs a new relay bearer according to the bearer type as an example, and the applied relay communication method is described in detail.
  • the method includes:
  • the base station sends a first message to the relay terminal.
  • the first message may be an RRC connection reconfiguration message, where the configuration information of the first bearer is included.
  • the configuration information of the first bearer includes a first bearer identifier and a bearer type, where the bearer type includes the foregoing common bearer and relay bearer.
  • the first message includes a bearer setup modification list, and the first bearer identifier is included in the bearer setup modification list.
  • step S601 For a detailed description of the first bearer and bearer setup modification list, refer to step S601, and a detailed description is omitted here.
  • the relay terminal receives the first message, and obtains configuration information of the first bearer in the first message.
  • S1103 The relay terminal determines whether the first bearer is included in the existing bearer of the relay terminal.
  • step S603 For the specific judgment manner, refer to step S603, and a detailed description is omitted here.
  • S1105 The relay terminal sends a response message of the first message to the base station.
  • FIG. 12 is a flowchart of a method for relay communication according to an embodiment of the present invention.
  • the relaying terminal resets the logical entity of the adaptation layer of the existing relay bearer according to the bearer type or establishes the logical layer of the adaptive layer for the existing relay bearer.
  • the communication method is described in detail. As shown in FIG. 12, the method includes:
  • S1201 The base station sends a first message to the relay terminal.
  • step S1101 For a description of the first message, refer to step S1101, and a detailed description is omitted here.
  • the relay terminal receives the first message, and obtains configuration information of the first bearer in the first message.
  • the relay terminal determines whether the first bearer is included in the existing bearer of the relay terminal.
  • step S603 For the specific judgment manner, refer to step S603, and a detailed description is omitted here.
  • the adaptation layer logical entity is established for the first bearer.
  • the existing bearer of the relay terminal includes the first bearer of the relay bearer, and the bearer type corresponding to the first bearer identifier in the first message is a normal bearer, the adaptation layer of the first bearer is released. Logical entity.
  • step S604 For the manner of establishing the adaptation layer logical entity, refer to step S604, and the manner of releasing the adaptation layer logical entity of the first bearer may be referred to step S904.
  • the relay terminal sends a response message of the first message to the base station.
  • the triggering condition for the base station to send the RRC connection reconfiguration message to the relay terminal is the same as that shown in FIG. 3a to FIG. 3c, and details are not described herein again.
  • the first message is an RRC connection reconfiguration message
  • the first message may also be implemented by using other messages, such as an RRC connection setup message, and other authorizations sent by the base station to the relay terminal. Messages, etc.
  • FIG. 13a is a flowchart of another method for relay communication according to an embodiment of the present invention. Referring to Figure 13a, the method includes:
  • the access network device generates a medium access control (MAC) protocol data unit (English Protocol Data Unit, PDU for short) PDU.
  • MAC medium access control
  • the MAC PDU carries the SRB0 data sent to the remote terminal.
  • SRB0 is a type of signaling radio bearer, one Generally, the signaling for establishing or reestablishing an RRC connection between the UE and the base station, for example, an RRC connection request message sent by the UE to the base station, and the RRC connection setup message of the base station replying to the UE are all transmitted through SRB0.
  • the SRB0 data in this step may be an RRC connection setup message.
  • FIG. 14 is a schematic diagram of a format of a MAC PDU according to an embodiment of the present invention.
  • the MAC PDU includes a MAC control element (English: Control Element, abbreviated as CE) for distinguishing data of the relay terminal and the remote terminal, or distinguishing data of different remote terminals, and the MAC CE includes the remote end.
  • CE Control Element
  • the identifier of the remote terminal may be an identifier used by the base station and the relay terminal to identify the remote terminal, such as a local ID.
  • the access network device sends a MAC PDU to the relay terminal.
  • the access network device learns, according to the context information of the relay terminal stored in the access network device, or the context information of the remote terminal, which terminal is the relay of the remote terminal, and corresponds to the remote terminal.
  • the relay terminal transmits the MAC PDU.
  • the relay terminal receives the MAC PDU sent by the access network device, and obtains the identifier of the remote terminal from the MAC CE.
  • the relay terminal sends the MAC PDU to the remote terminal to which the identifier of the remote terminal belongs.
  • FIG. 13b is a flowchart of another method for relay communication according to an embodiment of the present invention. Referring to Figure 13b, the method includes:
  • S1301b The remote terminal generates a MAC PDU.
  • the MAC PDU carries the SRB0 data sent to the base station. For example, an RRC Connection Request message sent to the base station.
  • S1302b The remote terminal sends a MAC PDU to the relay terminal.
  • the relay terminal receives the MAC PDU sent by the remote terminal, and obtains the identifier of the remote terminal from the MAC CE.
  • the relay terminal sends the MAC PDU to the access network device by using the relay bearer corresponding to the identifier of the remote terminal.
  • the adaptation function of the SRB0 data is implemented in the MAC layer, that is, the relay layer is distinguished at the MAC layer.
  • FIG. 15 is a block diagram showing a relay communication apparatus according to an embodiment of the present invention.
  • the relay communication device can be implemented as a whole or a part of the relay terminal by a dedicated hardware circuit or a combination of hardware and software.
  • the relay communication device includes a receiving unit 1501 and a configuration unit 1502.
  • the receiving unit 1501 is configured to receive the first message sent by the access network device.
  • the configuration unit 1502 is configured to configure an adaptation layer logic entity for the first bearer according to the first message received by the receiving unit 1501.
  • the first message may be an RRC connection reconfiguration message, an RRC connection setup message, another authorization message sent by the base station to the relay terminal, and the like.
  • the configuration information of the first bearer includes a first bearer identifier and an adaptation function configuration information.
  • the configuration unit 1502 is configured to establish a first bearer when the first bearer does not exist in the existing bearer of the relay terminal, and establish an adaptation layer logical entity for the first bearer according to the adaptation function configuration information, or the configuration unit When the first bearer exists in the existing bearer of the relay terminal, the 1502 is configured to configure the adaptive layer logical entity of the first bearer according to the configuration function configuration information.
  • the configuration unit 1502 is specifically configured to establish an adaptation layer logical entity for the first bearer; or reconfigure the adaptation layer logical entity of the first bearer; or Release A bearer adaptation layer logical entity.
  • the configuration information of the first bearer may include a first bearer identifier and bearer release indication information.
  • the configuration unit 1502 is configured to release resources of the first bearer, where the resources of the first bearer include an adaptation layer logic entity.
  • the configuration information of the first bearer includes a first bearer identifier and a bearer type, and the bearer type is a relay bearer or a normal bearer, and the relay bearer is used to transmit data of the remote terminal or used for transmitting the remote end.
  • the data of the terminal and the relay terminal which is used to transmit data of the relay terminal.
  • the configuration unit 1502 is configured to: when the first bearer does not exist in the existing bearer of the relay terminal, and the bearer type is a bearer bearer, establish a first bearer according to the bearer type and establish an adaptation layer logic for the first bearer.
  • An entity; or, the configuration unit 1502 is configured to configure, according to the bearer type, the adaptation layer logical entity of the first bearer when the first bearer exists in the existing bearer of the relay terminal.
  • the configuration unit 1502 is specifically configured to: when the first bearer in the existing bearer is a normal bearer and the bearer type is a relay bearer, establish an adaptation layer logical entity for the first bearer; or When the first bearer is a relay bearer and the bearer type is a normal bearer, the adaptation layer logical entity of the first bearer is released.
  • the adaptation layer logic entity is an adaptation function of the adaptation protocol entity or the PDCP protocol entity.
  • the adaptation function configuration information may further include indication information for instructing the relay terminal to enable or disable the adaptation function of the PDCP protocol entity.
  • the foregoing configuration unit 1502 may be implemented by a processor or may be implemented by a processor executing a program instruction in a memory.
  • the receiving unit 1501 may be implemented by a receiver Rx, or the processor may be implemented by using a receiver.
  • FIG 16 is a block diagram of a relay communication device provided by an embodiment of the present invention.
  • the relay communication device can be implemented as a whole or a part of the access network device through a dedicated hardware circuit or a combination of hardware and software.
  • the relay communication device includes a determining unit 1601 and a transmitting unit 1602.
  • the determining unit 1601 is configured to determine configuration information of the first bearer.
  • the sending unit 1602 is configured to send a first message to the relay terminal, where the first message includes configuration information of the first bearer determined by the determining unit 1601.
  • the configuration information of the first bearer includes a first bearer identifier and a bearer type, and the bearer type is a relay bearer or a normal bearer, and the relay bearer is used to transmit data of the remote terminal or used to transmit the remote terminal. And the data of the relay terminal, which is used to transmit data of the relay terminal.
  • the configuration information of the first bearer includes a first bearer identifier and an adaptation function configuration information.
  • the configuration information of the first bearer includes a first bearer identifier and bearer release indication information.
  • the adaptation function configuration information includes at least one of an identifier of the remote terminal and a bearer identifier of the remote terminal.
  • the adaptation layer logic entity is an adaptation function of the adaptation protocol entity or the PDCP protocol entity.
  • the adaptation function configuration information further includes indication information for instructing the relay terminal to enable or disable the adaptation function of the PDCP protocol entity.
  • determining unit 1601 may be implemented by a processor or the processor may execute a program instruction in a memory.
  • the sending unit 1602 may be implemented by a transmitter, or the processor may be implemented by using a transmitter.
  • FIG 17 is a block diagram of a relay communication device provided by an embodiment of the present invention.
  • the relay communication device can pass A dedicated hardware circuit, or a combination of hardware and software, is implemented as all or part of the relay terminal.
  • the relay communication device includes a receiving unit 1701, an obtaining unit 1702, and a transmitting unit 1703.
  • the receiving unit is configured to receive a MAC PDU, where the MAC PDU includes a media access control protocol control element MAC CE, the MAC CE includes an identifier of the remote terminal, and the MAC PDU carries the data of the remote terminal signaling bearer SRB0; the acquiring unit 1702 The identifier of the remote terminal is obtained from the MAC CE of the MAC PDU received from the receiving unit 1701; the sending unit 1703 is configured to send the MAC PDU received by the receiving unit 1701.
  • the foregoing obtaining unit 1702 may be implemented by a processor or may be implemented by a processor executing a program instruction in a memory.
  • the receiving unit 1701 may be implemented by a receiver, or the processor may be implemented by using a receiver, where the sending unit 1703 is implemented. It can be implemented by a transmitter or by a processor in conjunction with a transmitter.
  • FIG. 18 is a block diagram showing a relay communication apparatus according to an embodiment of the present invention.
  • the relay communication device can be implemented as a whole or part of an access network device or a remote terminal by a dedicated hardware circuit or a combination of hardware and software.
  • the relay communication device includes a generating unit 1801 and a transmitting unit 1802.
  • the generating unit 1801 is configured to generate a media access control protocol data unit MAC PDU, where the MAC PDU includes a media access control protocol control element MAC CE, the MAC CE includes an identifier of the remote terminal, and the MAC PDU carries signaling of the remote terminal.
  • the data carrying the SRB0 is used by the sending unit 1802 to send the MAC PDU generated by the generating unit 1801 to the relay terminal.
  • the identifier of the remote terminal is an identifier between the access network device and the relay terminal for identifying the remote terminal, such as a local identifier.
  • the foregoing generating unit 1801 may be implemented by a processor or the processor may execute a program instruction in a memory.
  • the sending unit 1802 may be implemented by a transmitter, or the processor may be implemented by using a transmitter.
  • FIG. 19 is a schematic structural diagram of a communication chip according to an embodiment of the present invention, which is applied to a mobile communication system device, such as the foregoing access network device or terminal.
  • the communication chip includes a processor 1910, a memory 1920, and a communication interface 1930.
  • the processor 1910 is coupled to the memory 1920 and the communication interface 1930 via a bus, respectively.
  • Communication interface 1930 is used to communicate with other communication devices.
  • Processor 1910 includes one or more processing cores.
  • the processor 1910 runs an operating system or application module.
  • the memory 1920 can store an operating system 1922, an application module 1924 required for at least one function.
  • the application module 1924 includes a receiving module 1924a, a processing module 1924b, and a sending module 1924c.
  • the receiving module 1924a is for implementing steps related to receiving; the processing module 1924b is for implementing steps related to calculation or processing; and the transmitting module 1924c is for implementing steps for transmitting.
  • memory 1920 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as SRAM, EEPROM, EPROM, PROM, ROM, magnetic memory, flash memory, magnetic or optical disk.
  • FIG. 19 does not constitute a limitation of the above-described communication chip, and may include more or less components or combinations of components, or different component arrangements.

Abstract

本申请公开了一种中继通信方法、装置和系统，属于通信技术领域。所述方法包括：中继终端接收接入网设备发送的第一消息，所述第一消息包括第一承载的配置信息；中继终端根据所述第一消息，为第一承载配置适配层逻辑实体，所述第一承载为所述中继终端和所述接入网设备之间的承载，所述适配层逻辑实体用于区分中继终端和远端终端的数据，或者不同远端终端的数据。本申请通过第一消息指示中继终端为第一承载配置适配层逻辑实体，从而可以支持采用L2中继协议栈的中继终端的中继承载的配置。

Description

中继通信方法、装置和系统 技术领域
本申请涉及通信技术领域，特别涉及一种中继通信方法、装置和系统。
背景技术
随着智能手表、智能手环、智能眼镜的出现和日益更新，可穿戴设备已经越来越受到人们的欢迎和青睐。基于可穿戴设备的应用以及面向可穿戴设备的通信技术，也已成为全球通信行业的研究热点。
作为可穿戴设备的典型应用场景，可穿戴设备通常会通过中继终端(例如智能手机)中转的方式，与蜂窝网络(例如长期演进系统(英文：Long Term Evolution，简称：LTE)网络)建立无线连接并进行通信，使得用户可以直接通过可穿戴设备上的各类应用程序(英文：Application，简称：APP)，与网络进行各种业务的数据传输。可穿戴设备的这种通过中继终端中继传输的通信方式，也被称为用户设备(英文：User Equipment，简称：UE)-网络中继(UE-to–Network Relay)传输。
为了实现中继终端的中继功能，在中继终端的通信协议栈架构中增加了层2中继功能，该层2中继功能位于无线链路控制(英文：Radio Link Control，简称：RLC)层以上(不包括RLC层)、英特网协议(英文：Internet Protocol，简称：IP)层或无线资源控制(Radio Resource Control，简称：RRC)层以下(不包括IP层和RRC层)，而目前的终端与接入网设备的通信协议栈架构中并不包括该中继功能，因此接入网设备无法对中继终端的该中继功能进行配置，因而不支持对使用该中继功能的中继终端的中继承载的配置。
发明内容
为了解决现有技术不支持对使用该中继功能的中继终端的中继承载的配置的问题，本发明实施例提供了一种中继通信方法、装置和系统。
第一方面，本发明实施例提供了一种中继通信方法，所述方法包括：中继终端接收接入网设备发送的第一消息，所述第一消息包括第一承载的配置信息；中继终端根据所述第一消息，为第一承载配置适配层逻辑实体，所述第一承载为所述中继终端和所述接入网设备之间的承载，所述适配层逻辑实体用于区分中继终端和远端终端的数据，或者不同远端终端的数据。
在一种可能的实现方式中，所述第一承载的配置信息包括第一承载标识和适配功能配置信息。所述适配功能配置信息包括远端终端的标识和/或远端终端的承载标识。
进一步地，所述中继终端根据所述第一消息，为第一承载配置适配层逻辑实体，可以包括以下几种情况：
第一种、中继终端未建立第一承载，根据第一消息新建第一承载。此时，所述中继终端的已有承载中不存在所述第一承载，则中继终端建立所述第一承载，并按照所述适配功能配置信息为所述第一承载建立适配层逻辑实体。
第二种、中继终端已建立第一承载，按照所述适配功能配置信息配置所述第一承载的适配层逻辑实体。这里的配置可以包括为所述第一承载建立适配层逻辑实体；或者，重新配置所述第一承载的适配层逻辑实体；或者，释放所述第一承载的适配层逻辑实体。
在另一种可能的实现方式中，所述第一承载的配置信息包括第一承载标识和承载释放指示信息。则所述中继终端根据所述第一消息，为第一承载配置适配层逻辑实体，是指中继终端已建立第一承载，中继终端根据第一消息释放第一承载。具体地，释放第一承载，包括：释放所述第一承载的资源，所述第一承载的资源包括适配层逻辑实体。
在又一种可能的实现方式中，所述第一承载的配置信息包括第一承载标识和承载类型，所述承载类型为中继承载或普通承载，所述中继承载用于传输远端终端的数据或者用于传输远端终端和中继终端的数据，所述普通承载用于传输所述中继终端的数据。
进一步地，所述中继终端根据所述第一消息，为第一承载配置适配层逻辑实体，可以包括以下几种情况：
第一种、中继终端未建立第一承载且第一消息中的承载类型为中继承载，根据第一消息新建第一承载。此时，所述中继终端的已有承载中不存在所述第一承载，则中继终端建立所述第一承载，并为所述第一承载建立适配层逻辑实体。
第二种、中继终端已建立第一承载，按照所述承载类型配置所述第一承载的适配层逻辑实体。具体地，可以包括当所述已有承载中的第一承载为普通承载且所述承载类型为中继承载时，为所述第一承载建立适配层逻辑实体，从而将普通承载修改为中继承载；或者，当所述已有承载中的第一承载为中继承载且所述承载类型为普通承载时，释放所述第一承载的适配层逻辑实体，从而将中继承载修改为普通承载。
第二方面，本发明实施例提供了一种中继通信方法，所述方法包括：接入网设备确定第一承载的配置信息，所述第一承载为所述接入网设备和中继终端之间的承载；接入网设备向所述中继终端发送第一消息，所述第一消息包括所述第一承载的配置信息，所述第一承载的配置信息用于指示所述中继终端为第一承载配置适配层逻辑实体，所述适配层逻辑实体用于区分中继终端和远端终端的数据，或者不同远端终端的数据。
在前述第一方面和第二方面中，接入网设备通过第一消息指示中继终端为第一承载配置适配层逻辑实体，从而可以支持采用L2中继协议栈的中继终端的中继承载的配置。其中，L2中继协议栈有多种，中继功能在RLC层以上(不包括RLC层)、IP层或RRC层以下(不包括IP层和RRC层)的协议栈均属于L2中继协议栈。这里为第一承载配置适配层逻辑实体，包括建立、修改或释放适配层逻辑实体。其中，适配层逻辑实体具体用于区分数据是来自/去往远端终端还是中继终端的，或者区分数据属于远端终端的哪个承载，或者区分来自/去往不同的远端终端的。
在前述第一方面和第二方面中，第一消息可以为RRC连接重配置消息、RRC连接建立消息或者接入网设备发送给中继终端的其他授权消息。
在前述第一方面和第二方面中，所述适配层逻辑实体可以为适配协议实体或PDCP协议实体的适配功能。当适配层逻辑实体为适配协议实体时，所述适配功能配置信息还包括打开或关闭指示，所述打开或关闭指示用于指示中继终端打开或关闭PDCP协议实体的适配功能。
第三方面，本发明实施例提供了一种中继通信方法，生成MAC PDU，所述MAC PDU中包 括MAC CE，所述MAC CE包括远端终端的标识，所述MAC PDU携带所述远端终端的信令承载SRB0的数据；发送所述MAC PDU。
第三方面的中继通信方法可以由接入网设备执行，也可以由远端终端执行。当由接入网设备执行时，SRB0的数据可以为RRC连接建立消息，当由远端终端执行时，SRB0的数据可以为RRC连接建立请求。
第四方面，本发明实施例提供了一种中继通信方法，该方法包括：接收MAC PDU，所述MAC PDU中包括媒体接入控制协议控制元素MAC CE，所述MAC CE包括远端终端的标识，所述MAC PDU携带所述远端终端的信令承载SRB0的数据；从所述MAC PDU的MAC CE中获取远端终端的标识；发送所述MAC PDU。
在第三方面和第四方面中，所述远端终端的标识为远端终端的本地标识，该本地标识是所述接入网设备和所述中继终端之间用于识别所述远端终端的标识。实现时，可以由接入网设备或者中继终端分配。
第五方面，本发明实施例提供了一种中继通信装置，所述装置包括用于实现第一方面所述的方法的单元，例如接收单元和配置单元。
第六方面，本发明实施例提供了一种中继通信装置，所述装置包括用于实现第二方面所述的方法的单元，例如生成单元、发送单元。
第七方面，本发明实施例提供了一种中继通信装置，所述装置包括用于实现第三方面所述的方法的单元，例如生成单元和发送单元。
第八方面，本发明实施例提供了一种中继通信装置，所述装置包括用于实现第四方面所述的方法的单元，例如接收单元、获取单元和发送单元。
第九方面，本发明实施例还提供了一种中继通信装置，用于中继终端，所述装置包括：存储器、与存储器连接的处理器，所述存储器用于存储软件程序以及模块，当所述处理器用于运行或执行存储在所述存储器内的软件程序以及模块时，可以执行第一方面或第四方面所述的方法。
第十方面，本发明实施例还提供了一种中继通信装置，用于接入网设备，所述装置包括：存储器、与存储器连接的处理器，所述存储器用于存储软件程序以及模块，当所述处理器用于运行或执行存储在所述存储器内的软件程序以及模块时，可以执行第二方面或第三方面所述的方法。
第十一方面，本发明实施例还提供了一种计算机可读介质，用于存储供终端执行的程序代码，所述程序代码包括执行第一方面或第四方面所述的方法的指令。
第十二方面，本发明实施例还提供了一种计算机可读介质，用于存储供接入网设备执行的程序代码，所述程序代码包括执行第二方面或第三方面所述的方法的指令。
第十三方面，本发明实施例还提供了一种通信芯片，应用在移动通信系统设备中，所述通信芯片包括：处理器、存储器以及通信接口；所述处理器、存储器以及通信接口通过总线耦合，所述存储器用于存储程序指令，所述处理器通过执行存储在所述存储器内的程序指令使得装载有所述通信芯片的通信系统设备能够执行如上述第一方面、第二方面、第三方面或第四方面中任意一种可能的实施方式提供的方法。
第十四方面，本发明实施例还提供了一种中继通信系统，所述系统包括接入网设备、中继终端和远端终端，接入网设备包括第六方面提供的中继通信装置，中继终端包括第五 方面提供的中继通信装置。或者，接入网设备包括第九方面提供的中继通信装置，中继终端包括第十方面提供的中继通信装置。
第十五方面，本发明实施例还提供了一种中继通信系统，所述系统包括接入网设备、中继终端和远端终端，接入网设备和远端终端包括第七方面提供的中继通信装置，中继终端包括第八方面提供的中继通信装置。
附图说明
图1是本发明实施例提供的一种中继通信系统的架构示意图；
图2a是终端与接入网设备通信时采用的无线协议栈的示意图；
图2b是远端终端通过中继终端与接入网设备通信时采用的无线协议栈的示意图；
图3a是现有的终端与接入网设备间的承载建立过程的流程图；
图3b是现有的终端与接入网设备间的承载修改过程的流程图；
图3c是现有的终端与接入网设备间的承载释放过程的流程图；
图4是本发明实施例提供的一种接入网设备的硬件结构示意图；
图5是本发明实施例提供的一种终端的硬件结构示意图；
图6是本发明实施例提供的一种中继通信方法的流程图；
图7是本发明实施例提供的另一种中继通信方法的流程图；
图8是本发明实施例提供的又一种中继通信方法的流程图；
图9是本发明实施例提供的又一种中继通信方法的流程图；
图10是本发明实施例提供的又一种中继通信方法的流程图；
图11是本发明实施例提供的又一种中继通信方法的流程图；
图12是本发明实施例提供的又一种中继通信方法的流程图；
图13a是本发明实施例提供的又一种中继通信方法的流程图；
图13b是本发明实施例提供的又一种中继通信方法的流程图；
图14是本发明实施例提供的一种MAC PDU的格式示意图；
图15是本发明实施例提供的一种中继通信装置的结构框图；
图16是本发明实施例提供的另一种中继通信装置的结构框图；
图17是本发明实施例提供的另一种中继通信装置的结构框图；
图18是本发明实施例提供的另一种中继通信装置的结构框图；
图19是本发明实施例提供的一种通信芯片的结构图。
具体实施方式
在本文提及的“模块”是指存储在存储器中的能够实现某些功能的程序或指令；在本文中提及的“单元”是指按照逻辑划分的功能性结构，该“单元”可以由纯硬件实现，或者，软硬件的结合实现。
图1示出了本发明实施例提供的一种中继通信系统。该中继通信系统100可以是LTE系统、5G系统或其后续演进系统。如图1所示，该中继通信系统包括接入网设备11、中继终端12和远端终端13。其中，远端终端13通过中继终端12与接入网设备11通信。
进一步地，中继终端12与接入网设备11之间通过蜂窝网络(包括上行链路(英文： Uplink)和下行链路(英文：Downlink))连接。远端终端13和中继终端12之间通过短距离通信链路，例如直通链路(英文：Sidelink)，或者蓝牙，或者无线局域网WLAN通信。
在上行传输方向，即从远端终端13到接入网设备11的方向，当远端终端13有数据发送时，远端终端13先将数据通过直通链路传输给中继终端12，然后，中继终端12将接收到的数据通过蜂窝上行链路发送给接入网设备11。而在下行传输方向，即从接入网设备11到远端终端13的方向，接入网设备11将先通过蜂窝下行链路将数据发送给中继终端12，再由中继终端12通过直通链路将其发送给远端终端13。
在图1所示中继通信系统中，其中，中继终端12可以是智能手机(英文：Smartphone)、个人通信业务(英文：Personal Communication Service，简称：PCS)电话、无绳电话、会话发起协议(英文：Session Initial Protocol，简称：SIP)话机、无线本地环路(英文：Wireless Local Loop，简称：WLL)站、个人数字助理(英文：Personal Digital Assistant，简称：PDA)等设备。终端也可以称为系统、订户单元(英文：Subscriber Unit)、订户站(英文：Subscriber Station)，移动站(英文：Mobile Station)、移动台(英文：Mobile)、远程站(英文：Remote Station)、接入点(英文：Access Point)、远程终端(英文：Remote Terminal)、接入终端(英文：Access Terminal)、用户终端(英文：User Terminal)、用户代理(英文：User Agent)、用户设备(英文：User Equipment，简称：UE)。远端终端13可以为UE，物联网设备，可穿戴设备，例如智能手环、智能手表、智能眼镜等。
中继终端12经无线接入网(英文：Radio Access Network，简称：RAN)与一个或多个接入网设备11进行通信。
接入网设备11作为中继终端12与接入网的其余部分之间的路由器，接入网的其余部分可包括网际协议(英文：Internet Protocol，简称：IP)网络。接入网设备11还可协调对空中接口的属性管理。例如，接入网设备11可以是全球移动通信系统(英文：Global System for Mobile Communication，简称：GSM)或码分多址(英文：Code Division Multiple Access，简称：CDMA)系统中的基站收发台(英文：Base Transceiver Station，简称：BTS)，也可以是宽带码分多址(英文：Wideband Code Division Multiple Access，简称：WCDMA)中的基站(英文：NodeB)，还可以是LTE中的eNB，本发明对此不作限定。
一个中继终端12可以为一个或多个远端终端13提供中继功能(例如图1中一个中继终端12为两个远端终端13提供中继功能)。在提供中继功能时，中继终端12的一个无线承载RB可以用于传输一个或多个远端终端13的RB的数据，一个或多个远端终端13的RB的数据可以与中继终端的数据在Uu口(基站与UE之间的无线接口)复用中继终端的一个RB进行传输。当中继终端12的一个RB用于传输远端终端13的多个RB的数据时，这多个RB分别属于不同的远端终端。例如，在图1中，RB1和RB2分别属于不同的远端终端,但是RB1和RB2上的数据均采用中继终端的承载RB0传输。
在本发明实施例中，远端终端的RB是指接入网设备与远端终端之间的RB，该RB是逻辑上的Uu承载；而中继终端的RB是指接入网设备与中继终端之间的RB。在本申请中，将中继终端的RB分为普通承载和中继承载，其中，普通承载是指只承载中继终端自己的数据的RB，而中继承载是指用于承载远端终端的数据的RB或者既承载远端终端数据也承载中继终端自己的数据的RB。建立远端终端的RB的信令流程可以与建立中继终端的普通承载的信令流程类似，远端终端的RB建立过程中的消息(例如RRC连接建立请求消息、RRC连接建 立消息等)可以通过中继终端转发。
中继终端和接入网设备通信时(即基于普通承载进行通信时)使用的协议栈如图2a所示。对于普通承载，需要经过PDCP/RLC/MAC/PHY的处理。建立一个RB意味着根据该RB的QoS参数，为其建立相应的PDCP/RLC实体，在MAC层建立相应的逻辑信道并进行逻辑信道的配置。修改一个RB意味着修改对应的PDCP/RLC实体的配置以及逻辑信道的配置。释放一个RB意味着释放对应的PDCP/RLC实体以及逻辑信道。
图2b显示了远端终端通过中继终端与接入网设备通信时(即基于中继承载进行通信时)使用的一种L2中继协议栈。该L2中继协议栈与第三代合作伙伴计划(The 3rd Generation Partnership Project，3GPP)标准中定义的用于可穿戴设备通信的UE-网络中继无线协议栈相同。
如图2b所示，远端终端和接入网设备之间具有面向Uu接口的分组数据汇聚协议(英文：Packet Data Convergence Protocol，简称：PDCP)协议栈(下文简称为Uu PDCP)。在该Uu PDCP协议栈中，将包含若干个用于远端终端的数据传输的无线承载(英文：Radio Bearer，简称：RB)。此外，在远端终端的Uu PDCP协议栈下面，有一个适配层(英文：Adaptation Layer)，其功能至少包括以下一种：为远端终端的数据，添加包头，该包头包括远端终端的标识；为数据添加远端终端的无线承载标识RBID；识别中继终端和远端终端的数据；识别不同远端终端的数据；识别远端终端的不同无线承载RB的数据，用于使得网络侧可以区分来自不同远端终端的数据，进而将其发送到不同的核心网网关及服务器进行后续处理。
在适配协议层的下方是PC5接口无线协议栈，PC5接口无线协议栈包括无线链路控制层(英文：Radio Link Control，简称：RLC)(PC5)、媒体接入控制协议(英文：Medium Access Control，简称：MAC)(PC5)和物理层(英文：Physical，简称：PHY)(PC5)。PC5接口是远端终端和中继终端之间进行直接数据通信的接口，它是3GPP标准中所定义的，LTE D2D技术所对应的空中接口。PC5接口对应的直通链路为“D2D直通链路”。
再次参见图2b，中继终端和接入网设备之间具有面向Uu接口的分组数据汇聚协议(英文：Packet Data Convergence Protocol，简称：PDCP)协议栈(下文简称为Uu PDCP)(图中未示出)。在该Uu PDCP协议栈中，将包含若干个用于远端终端的数据传输的无线承载(英文：Radio Bearer，简称：RB)。此外，在中继终端的Uu PDCP协议栈下面，有一个适配层(英文：Adaptation Layer)，其功能是中继远端终端的数据。由于中继终端自身也有数据传输，因此该适配层可以用来区分中继终端和远端终端的数据，或者不同远端终端的数据。具体地，适配层逻辑实体用于区分数据是来自/去往远端终端还是中继终端的，以及数据属于哪个远端终端的哪个承载。在适配协议层的下方是面向Uu接口的RLC(Uu)、MAC(Uu)和PHY(Uu)。
图3a-3c分别显示了普通承载的建立、修改(也可称为重配置)和释放的信令流程。下面结合图3a-3c分别说明普通承载的建立、修改和释放过程。
如图3a所示，普通承载的建立流程包括：
S301a：在终端上下文建立后，移动性管理实体(英文：Mobility Management Entity，简称MME)下发演进的无线接入承载(英文：Evolved Radio Access Bearer，简称E-RAB)建立请求E-RAB SETUP REQUEST至eNB，以触发普通承载的建立。
S302a：eNB接收到该请求后，发送RRC连接重配置消息至终端，该RRC重配置消息中包括专用无线资源配置Radio Resource Config Dedicated中的承载建立修改列表(drb-ToAddModList)。
相应地，UE收到RRC连接重配置消息后，建立对应的PDCP协议实体并配置相应的安全参数；建立RLC实体并进行配置；建立MAC层逻辑信道并进行逻辑信道的配置。
S303a：UE配置完成后，向eNB发送RRC连接重配置完成消息。
S304a：eNB向MME发送E-RAB建立响应E-RAB Setup Response消息。
如图3b所示，普通承载的修改流程包括：
S301b：MME下发E-RAB修改请求E-RAB MODIFY REQUEST至eNB，以触发普通承载的修改。
S302b：eNB接收到该请求后，发送RRC连接重配置消息至终端，该RRC重配置消息中包括专用无线资源配置Radio Resource Config Dedicated中的承载建立修改列表(drb-ToAddModList)。
相应地，UE收到RRC连接重配置消息后，重配置对应的PDCP协议实体、RLC实体以及逻辑信道；
S303b：UE配置完成后，向eNB发送RRC连接重配置完成消息。
S304b：eNB向MME发送E-RAB修改响应E-RAB Modify Response消息。
如图3c所示，普通承载的释放流程包括：
S301c：MME下发E-RAB释放命令E-RAB RELEASE COMMAND至eNB，以触发普通承载的释放。
S302c：eNB接收到该请求后，发送RRC连接重配置消息至终端，该RRC重配置消息中包括专用无线资源配置Radio Resource Config Dedicated中的承载释放列表(drb-ToReleaseList)。
相应地，UE收到RRC连接重配置消息后，释放对应的PDCP协议实体、RLC实体以及逻辑信道；
S303c：UE配置完成后，向eNB发送RRC连接重配置完成消息。
S304c：eNB向MME发送E-RAB释放响应E-RAB RELEASE Response消息。
此外，该普通承载还可以随着信令链路一起释放。
从图3a-图3c的相关流程可以看出，在普通承载的建立、修改和释放过程中，均不涉及对适配层逻辑实体的配置。因此，采用现有的协议栈，不支持对会用L2中继协议栈的中继终端的中继承载的建立、修改和释放。为此，本申请通过在RRC连接重配置消息中增加适配功能配置信息或承载类型，(详见下文图6-图14所述实施例的相关描述)以实现对适配层逻辑实体的配置，这里的配置包括建立、修改和释放。
下面结合具体的硬件结构对实现本发明实施例提供的终端和接入网设备进行说明。
图4示出了实现本发明实施例提供的一种接入网设备400的硬件结构，该接入网设备400可以为eNB，如图4所示，该接入网设备400包括：处理器41、收发器42、存储器43。
处理器41包括一个或者一个以上处理核心，处理器41通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
收发器42包括接收机Rx和发射机Tx，收发器42还可以实现成为一通信芯片，通信芯 片中可以包括接收模块、发射模块和调制解调模块等，用于对信息进行调制解调，并通过无线信号接收或发送该信息。
收发器42、存储器43以及处理器41通过总线耦合。存储器43可用于存储软件程序以及模块。存储器可存储操作系统44、至少一个功能的应用程序模块45。
应用程序模块45至少包括：确定模块451和发送模块452。
可选地，处理器41用于执行应用程序模块45中的各个模块，实现如图6-图12中由接入网设备所需要执行的步骤。
或者，应用程序模块45至少包括生成模块和发送模块，此时，处理器41用于执行应用程序模块45中的各个模块，实现如图13a-13b中由接入网设备所需执行的步骤。
此外，存储器43是一种计算机可读存储介质，可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随时存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
本领域技术人员可以理解，图4中所示出的接入网设备400的结构并不构成对接入网设备的限定，可以包括比图示更多或更少的部件或组合某些部件，或者不同的部件布置。
图5示出了实现本发明实施例提供的一种终端500的硬件结构，该终端500可以为前述中继终端或远端终端，具体可以为移动终端，例如智能手机等。如图5所示，该终端500包括：处理器51、收发器52、存储器53。
处理器51包括一个或者一个以上处理核心，处理器51通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
收发器52包括接收机Rx和发射机Tx，收发器52还可以实现成为一通信芯片，通信芯片中可以包括接收模块、发射模块和调制解调模块等，用于对信息进行调制解调，并通过无线信号接收或发送该信息。
收发器52、存储器53以及处理器51通过总线耦合。存储器53可用于存储软件程序以及模块。存储器可存储操作系统54、至少一个功能的应用程序模块55。
应用程序模块55至少包括：接收模块551和配置模块552。
可选地，处理器51用于执行应用程序模块55中的各个模块，实现如图6-图12中由中继终端所需要执行的步骤。
或者，应用程序模块55至少包括接收模块、获取模块和发送模块，此时，处理器51用于执行应用程序模块55中的各个模块，实现如图13a-13b中由中继终端所需执行的步骤。
或者，应用程序模块55至少包括生成模块和发送模块，此时，处理器51用于执行应用程序模块55中的各个模块，实现如图13a-13b中由远端终端所需执行的步骤。
此外，存储器53是一种计算机可读存储介质，可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如SRAM，EEPROM，EPROM，PROM，ROM，磁存储器，快闪存储器，磁盘或光盘。
本领域技术人员可以理解，图5中所示出的终端500的结构并不构成对终端的限定，可以包括比图示更多或更少的部件或组合某些部件，或者不同的部件布置。
下文中，为了便于描述，将以接入网设备为基站、中继终端是中继用户设备(英文： Relay UE)，远端终端是远端用户设备(英文：Remote UE)为例对本发明实施例进行详细说明。
图6为本发明实施例提供的一种中继通信方法的流程图。以中继终端根据适配功能配置信息新建中继承载为例，对本申请的中继通信方法进行了详细说明。如图6所示，该方法包括：
S601：基站向中继终端发送第一消息。
其中，该第一消息可以为RRC连接重配置消息，其中包括第一承载的配置信息。该第一承载的配置信息包括第一承载标识和适配功能配置信息。该第一承载为基站和中继终端之间的承载，即前述中继终端的RB。
可选地，该第一承载可以为数据无线承载(英文：Data Radio Bear,简称：DRB)，也可以为信令无线承载(英文：Signalling Radio Bear,简称：SRB)。
实际应用中，该第一消息中包括承载建立修改列表，第一承载标识包含在承载建立修改列表中。在一种实现方式中，承载建立修改列表可以分为信令无线承载建立修改列表srb-ToAddModList和数据无线承载建立修改列表drb-ToAddModList，信令无线承载建立修改列表srb-ToAddModList包括信令无线承载标识，而数据无线承载建立修改列表drb-ToAddModList包括数据无线承载标识，第一消息中包括这两种列表中的至少一种。在另一种实现方式中，承载建立修改列表可以不区分信令无线承载建立修改列表和数据无线承载建立修改列表，第一消息中采用一张列表同时包括信令无线承载标识和数据无线承载标识。在这两种实现方式中，第一承载均为承载建立修改列表中具有适配功能配置信息的任一承载。
当然，承载建立修改列表中还可以包括不具有适配功能配置信息的承载的配置信息，中继终端可以根据不具有适配功能配置信息的承载的配置信息建立普通承载。
进一步地，第一承载标识可以是具体的数值，该数值用于唯一表示一个第一承载。
S602：中继终端接收第一消息，并获取第一消息中的第一承载的配置信息。
S603：中继终端确定中继终端的已有承载中，是否包括第一承载。
具体地，中继终端判断自己当前的配置中是否包括第一承载标识，若包括，表示中继终端的已有承载包括第一承载，若不包括，表示中继终端的已有承载不包括第一承载。
S604：若中继终端的已有承载中不包括第一承载，则建立第一承载，并为第一承载建立适配层逻辑实体。
在一种可能的实现方式中，适配层逻辑实体可以为一个单独的协议实体，即适配协议实体(在本申请中，简称为适配层实体)。在这种实现方式中，适配功能配置信息adaptation-Config作为独立的部分包含在第一消息中。相应的，在这种实现方式中，为第一承载建立适配层逻辑实体包括：根据适配功能配置信息建立适配协议实体。可选地，适配功能配置信息包括远端终端的标识和远端终端的承载标识中的至少一种。其中，远端终端的标识可以是远端终端的本地标识Local ID。该本地标识用于远端基站和中继终端之间对远端终端进行识别，可以由基站或中继终端分配。进一步地，建立适配协议实体包括：根据适配功能配置信息adaptation-Config对adaptation实体进行参数配置。该参数可以是远端终端的无线承载标识、远端终端的标识。
在另一种可能的实现方式中，适配层逻辑实体可以为PDCP协议实体的一个功能。在这 种实现方式中，适配功能配置信息作为一个组成部分包含在第一消息携带的PDCP配置信息中。在这种实现方式中，为第一承载标识对应的承载建立适配层逻辑实体，指开启PDCP协议实体的适配功能。相应的，在这种实现方式中，为第一承载建立适配层逻辑实体包括：建立PDCP协议实体并开启PDCP协议实体的适配功能。可选地，适配功能配置信息可以包括以下至少一种：远端终端的标识、远端终端的承载标识、用于指示PDCP协议实体的适配功能是否开启的指示信息，用于指示删除适配层实体的指示信息，用于指示建立适配层实体的指示信息。
容易知道，在建立第一承载之后，除了为第一承载建立适配层逻辑实体以外，还会为第一承载建立PDCP协议实体、RLC协议实体以及逻辑信道。
S605：中继终端向基站发送第一消息的响应消息。
具体地，当第一消息为RRC连接重配置消息时，第一消息的响应消息为RRC连接重配置完成消息。
图7为本发明实施例提供的一种中继通信方法的流程图。图7所示实施例中，以中继终端根据适配功能配置信息将普通承载修改为中继承载为例，对本申请的中继通信方法进行了详细说明。如图7所示，该方法包括：
S701：基站向中继终端发送第一消息。
关于第一消息的内容，可以参见S601，在此不再赘述。
S702：中继终端接收第一消息，并获取第一消息中的第一承载的配置信息。
S703：中继终端确定中继终端的已有承载中，是否包括第一承载。
该步骤S703的实现方式与步骤S603相同，在此省略详细描述。
S704：若中继终端的已有承载中包括第一承载，且已有的第一承载不具有适配层逻辑实体，则为第一承载建立适配层逻辑实体。
具体地，判断已有的第一承载是否具有适配层逻辑实体可以采用如下方式：
判断中继终端当前的配置是否包含第一消息中的适配功能配置信息，若中继终端当前的配置包含第一消息中的适配功能配置信息，则表示中继终端的已有的第一承载具有适配层逻辑实体，而若中继终端当前的配置不包含第一消息中的适配功能配置信息，则表示中继终端的已有的第一承载不具有适配层逻辑实体。
或者，判断已有的第一承载是否具有适配层逻辑实体可以采用如下方式：
判断中继终端的第一承载对应的PDCP协议实体的适配功能是否开启，若为开启状态，则表示中继终端的已有的第一承载具有适配层逻辑实体，而若为关闭状态，则表示中继终端的已有的第一承载不具有适配层逻辑实体。
关于为第一承载建立适配层逻辑实体的实现方式，在这种实现方式中，适配功能配置信息作为一个组成部分包含在第一消息携带的PDCP配置信息中。在这种实现方式中，为第一承载标识对应的承载建立适配层逻辑实体，指开启PDCP协议实体的适配功能。相应的，在这种实现方式中，为第一承载建立适配层逻辑实体包括：开启PDCP协议实体的适配功能。可选地，适配功能配置信息可以包括以下至少一种：远端终端的标识、远端终端的承载标识、用于指示PDCP协议实体的适配功能是否开启的指示信息，用于指示删除适配层实体的指示信息，用于指示建立适配层实体的指示信息。在一种可能的实现方式中，适配层逻辑实体可以为一个单独的协议实体，即适配层实体。参见步骤S604，在此不再赘述。
关于适配层逻辑实体的内容实现方式可参见步骤S604，在此不再赘述。
S705：中继终端向基站发送第一消息的响应消息。
图8为本发明实施例提供的一种中继通信方法的流程图。图8所示实施例中，以中继终端根据适配功能配置信息对中继承载进行重新配置为例，对本申请的中继通信方法进行了详细说明。如图8所示，该方法包括：
S801：基站向中继终端发送第一消息。
关于第一消息的内容，可以参见S601，在此不再赘述。
S802：中继终端接收第一消息，并获取第一消息中的第一承载的配置信息。
S803：中继终端确定中继终端的已有承载中，是否包括第一承载。
该步骤S703的实现方式与步骤S603相同，在此省略详细描述。
S804：若中继终端的已有承载中包括第一承载，且已有的第一承载具有适配层逻辑实体，则按照第一消息中的适配功能配置信息对第一承载的适配层逻辑实体进行重新配置。
判断已有的第一承载是否具有适配层逻辑实体的方式可以参见步骤S704，而关于适配层逻辑实体的内容可以参见步骤S604，故在此均不再赘述。
此外，对第一承载的适配层逻辑实体进行重新配置，包括添加新的参数和修改原参数中的至少一种。该参数可以是远端终端的无线承载的标识和远端终端的标识中的至少一种。例如，中继终端的中继承载原本承载了其自身和第一远端终端的某个RB的数据，现在该中继承载还要承载第二远端终端的某个RB的数据，则在第一承载的适配层逻辑实体的参数中添加该第二远端终端的无线承载的标识和该第二远端终端的标识。其中，第一远端终端和第二远端终端为两个不同的终端。又例如，中继终端的中继承载原本承载了其自身和第一远端终端的某个RB的数据，现在该中继承载要改为承载自身和第二远端终端的某个RB的数据，则在第一承载的适配层逻辑实体的参数中将第一远端终端的RB的标识和第一远端终端的标识分别替换为第二远端终端的无线承载的标识和第二远端终端的标识。又例如，中继终端的中继承载原本承载了其自身和第一远端终端的某个RB的数据，以及第二远端终端的某个RB的数据，现在该中继承载不再承载第二远端终端的某个RB的数据了，则在第一承载的适配层逻辑实体的参数中删除该第二远端终端的无线承载的标识和该第二远端终端的标识。
S805：中继终端向基站发送第一消息的响应消息。
图9为本发明实施例提供的一种中继通信方法的流程图。图9所示实施例中，以中继终端根据适配功能配置信息将中继终端的中继承载修改为普通承载为例，对本申请的中继通信方法进行了详细说明。如图9所示，该方法包括：
S901：基站向中继终端发送第一消息。
关于第一消息的内容，可以参见S601，在此不再赘述。
S902：中继终端接收第一消息，并获取第一消息中的第一承载的配置信息。
S903：中继终端确定中继终端的已有承载中，是否包括第一承载。
该步骤S903的实现方式与步骤S603相同，在此省略详细描述。
S904：若中继终端的已有承载中包括第一承载，且已有的第一承载具有适配层逻辑实 体，则按照第一消息中的适配功能配置信息释放第一承载的适配层逻辑实体。
在一种可能的实现方式中，适配层逻辑实体可以为一个单独的协议实体，即适配协议实体(在本申请中，简称为适配层实体)。相应的，在这种实现方式中，若适配功能配置信息包含指示中继终端释放适配层实体的指示信息，中继终端释放第一承载的适配层逻辑实体。释放第一承载的适配层逻辑实体包括：释放适配层实体。
在另一种可能的实现方式中，适配层逻辑实体可以为PDCP协议实体的一个功能。相应的，在这种实现方式中，若适配功能配置信息包含指示PDCP协议实体的适配功能关闭的指示信息，中继终端释放第一承载的适配层逻辑实体。释放第一承载的适配层逻辑实体包括：关闭PDCP协议实体的适配层功能。
S905：中继终端向基站发送第一消息的响应消息。
图10为本发明实施例提供的一种中继通信方法的流程图。图10所示实施例中，以中继终端根据第一承载的配置信息释放中继承载为例，对本申请的中继通信方法进行了详细说明。如图10所示，该方法包括：
S1001：基站向中继终端发送第一消息。
其中，该第一消息可以为RRC连接重配置消息，其中包括第一承载标识和承载释放指示信息。该第一承载为基站和中继终端之间的承载，即前述中继终端的RB。可选地，该第一承载可以为数据无线承载，也可以为信令无线承载。
实际应用中，该第一消息中包括承载释放列表，第一承载标识包含在承载释放列表中。在一种实现方式中，承载释放列表可以分为信令无线承载释放列表srb-ToReleaseList和数据无线承载释放列表drb-ToReleaseList，信令无线承载释放列表srb-ToReleaseList包括信令无线承载标识，而数据无线承载释放列表drb-ToReleaseList包括数据无线承载标识，第一消息中包括这两种列表中的至少一种。在另一种实现方式中，承载释放列表可以不区分信令无线承载释放列表和数据无线承载释放列表，第一消息中采用一张列表同时包括信令无线承载标识和数据无线承载标识。在这两种实现方式中，第一承载均为承载释放列表中具有适配功能配置信息的任一承载。当然，承载建立修改列表中还可以包括不具有适配功能配置信息的承载。
进一步地，第一承载标识可以是具体的数值，该数值用于唯一表示一个第一承载。
S1002：中继终端接收第一消息，并获取第一消息中的第一承载的配置信息。
S1003：中继终端确定中继终端的已有承载中，是否包括第一承载。
具体的判断方式可以参见步骤S603，在此省略详细描述。
S1004：若中继终端的已有承载中包括第一承载，则释放第一承载对应的资源。
其中，该第一承载对应的资源包括适配层逻辑实体。
S1005：中继终端向基站发送第一消息的响应消息。
图11为本发明实施例提供的一种中继通信方法的流程图。图11所示实施例中，以中继终端根据承载类型新建中继承载为例，对申请的中继通信方法进行了详细说明。如图11所示，该方法包括：
S1101：基站向中继终端发送第一消息。
其中，该第一消息可以为RRC连接重配置消息，其中包括第一承载的配置信息。该第一承载的配置信息包括第一承载标识和承载类型，其中，承载类型包括前述普通承载和中继承载。实际应用中，该第一消息中包括承载建立修改列表，第一承载标识包含在承载建立修改列表中。
关于第一承载和承载建立修改列表的详细描述可以参见步骤S601，在此省略详细描述。
S1102：中继终端接收第一消息，并获取第一消息中的第一承载的配置信息。
S1103：中继终端确定中继终端的已有承载中，是否包括第一承载。
具体的判断方式可以参见步骤S603，在此省略详细描述。
S1104：若中继终端的已有承载中不包括第一承载，且第一承载标识对应的承载类型为中继承载，则建立第一承载，并为第一承载建立适配层逻辑实体。
若第一承载的配置信息还包括前述适配层逻辑实体配置信息，为第一承载建立适配层逻辑实体的具体实现方式参见步骤S604，在此省略详细描述。
S1105：中继终端向基站发送第一消息的响应消息。
图12为本发明实施例提供的一种中继通信方法的流程图。图12所示实施例中，以中继终端根据承载类型释放已有的中继承载的适配层逻辑实体或者为已有的中继承载建立适配层逻辑实体为例，对本申请的中继通信方法进行了详细说明。如图12所示，该方法包括：
S1201：基站向中继终端发送第一消息。
关于第一消息的描述参见步骤S1101，在此省略详细描述。
S1202：中继终端接收第一消息，并获取第一消息中的第一承载的配置信息。
S1203：中继终端确定中继终端的已有承载中，是否包括第一承载。
具体的判断方式可以参见步骤S603，在此省略详细描述。
S1204：若中继终端的已有承载中包括是普通承载的第一承载，且第一消息中该第一承载标识对应的承载类型为中继承载，则为第一承载建立适配层逻辑实体；或者，若中继终端的已有承载中包括是中继承载的第一承载，且第一消息中该第一承载标识对应的的承载类型为普通承载，则释放第一承载的适配层逻辑实体。
其中建立适配层逻辑实体的方式可以参见步骤S604，而释放第一承载的适配层逻辑实体的方式可以参见步骤S904。
S1205：中继终端向基站发送第一消息的响应消息。
需要说明的是，基站向中继终端发送RRC连接重配置消息的触发条件与图3a-图3c所示条件相同，在此不再赘述。
需要说明的是，本发明实施例以第一消息为RRC连接重配置消息为例进行了说明，第一消息还可以采用其他消息实现，例如RRC连接建立消息、基站发送给中继终端的其他授权消息等。
图13a为本发明实施例提供的另一种中继通信方法的流程图。参见图13a，该方法包括：
S1301a：接入网设备生成媒体接入控制(英文Medium Access Control，简称MAC)协议数据单元(英文Protocol Data Unit，简称PDU)PDU。
其中，该MAC PDU携带发送给远端终端的SRB0数据。SRB0是信令无线承载的一种，一 般用于传输UE与基站建立或重建RRC连接的信令，例如UE发给基站的RRC连接请求消息，基站回复UE的RRC连接建立消息等都是通过SRB0传输的。该步骤中的SRB0数据可以为RRC连接建立消息。
图14为本发明实施例提供的一种MAC PDU的格式示意图。参见图14，MAC PDU中包括专门用于区分中继终端和远端终端的数据，或者区分不同远端终端的数据的MAC控制元素(英文：Control Element，简称CE)，该MAC CE包括远端终端的标识或者指示信息，该指示信息用于指示该数据是中继终端的数据还是远端终端的数据。其中，远端终端的标识可以是基站和中继终端用于识别远端终端的标识，例如本地ID。
S1302a：接入网设备向中继终端发送MAC PDU。
具体地，该接入网设备根据接入网设备中存储的中继终端的上下文信息，或者远端终端的上下文信息中获知该远端终端的中继是哪个终端，向该远端终端对应的中继终端发送该MAC PDU。
S1303a：中继终端接收接入网设备发送的MAC PDU，并从MAC CE中获取远端终端的标识。
S1304a：中继终端将MAC PDU发送给远端终端的标识所属的远端终端。
图13b为本发明实施例提供的另一种中继通信方法的流程图。参见图13b，该方法包括：
S1301b：远端终端生成MAC PDU。
其中，该MAC PDU携带发送给基站的SRB0数据。例如，发给基站的RRC连接请求消息。
S1302b：远端终端向中继终端发送MAC PDU。
S1303b：中继终端接收远端终端发送的MAC PDU，并从MAC CE中获取远端终端的标识。
S1304b：中继终端将MAC PDU采用远端终端的标识对应的中继承载发送给接入网设备。
在图13a和图13b所示实施例中，由于SRB0没有对应的PDCP协议实体和真正的RLC实体，因此，将SRB0的数据的适配功能放在MAC层实现，即在MAC层区分中继终端的数据和远端终端的数据，或者区分不同远端终端的数据。
图15示出了本发明一个实施例提供的中继通信装置的框图。该中继通信装置可以通过专用硬件电路，或者，软硬件的结合实现成为中继终端的全部或一部分。该中继通信装置包括：接收单元1501和配置单元1502。其中，接收单元1501用于接收接入网设备发送的第一消息。配置单元1502用于根据接收单元1501接收到的第一消息，为第一承载配置适配层逻辑实体。
可选地，该第一消息可以为RRC连接重配置消息、RRC连接建立消息、基站发送给中继终端的其他授权消息等。
在一种实施方式中，第一承载的配置信息包括第一承载标识和适配功能配置信息。
进一步地，配置单元1502用于当中继终端的已有承载中不存在第一承载时，建立第一承载，并按照适配功能配置信息为第一承载建立适配层逻辑实体，或者，配置单元1502用于当中继终端的已有承载中存在第一承载时，按照适配功能配置信息配置第一承载的适配层逻辑实体。
更进一步地，当中继终端的已有承载中存在第一承载时，配置单元1502具体用于为第一承载建立适配层逻辑实体；或者，重新配置第一承载的适配层逻辑实体；或者，释放第 一承载的适配层逻辑实体。
在另一种实施方式中，第一承载的配置信息可以包括第一承载标识和承载释放指示信息。
相应地，配置单元1502用于释放第一承载的资源，第一承载的资源包括适配层逻辑实体。
在又一种实施方式中，第一承载的配置信息包括第一承载标识和承载类型，承载类型为中继承载或普通承载，中继承载用于传输远端终端的数据或者用于传输远端终端和中继终端的数据，普通承载用于传输中继终端的数据。
在该实施方式中，配置单元1502用于当中继终端的已有承载中不存在第一承载且承载类型为中继承载时，按照承载类型建立第一承载并为第一承载建立适配层逻辑实体；或者，配置单元1502用于当中继终端的已有承载中存在第一承载时，按照承载类型配置第一承载的适配层逻辑实体。
更进一步地，配置单元1502具体用于当已有承载中的第一承载为普通承载且承载类型为中继承载时，为第一承载建立适配层逻辑实体；或者，当已有承载中的第一承载为中继承载且承载类型为普通承载时，释放第一承载的适配层逻辑实体。
可选地，适配层逻辑实体为适配协议实体或PDCP协议实体的适配功能。
当适配层逻辑实体为PDCP协议实体的适配功能时，适配功能配置信息还可以包括用于指示中继终端打开或关闭PDCP协议实体的适配功能的指示信息。
相关细节可结合参考图6-图12的方法实施例。
需要说明的是，上述配置单元1502可以由处理器实现或者，处理器执行存储器中的程序指令来实现，上述接收单元1501可以由接收机Rx实现，或者处理器配合接收机来实现。
图16示出了本发明一个实施例提供的中继通信装置的框图。该中继通信装置可以通过专用硬件电路，或者，软硬件的结合实现成为接入网设备的全部或一部分。该中继通信装置包括：确定单元1601和发送单元1602。其中，确定单元1601用于确定第一承载的配置信息。发送单元1602用于向中继终端发送第一消息，第一消息包括确定单元1601确定的第一承载的配置信息。
在一种实现方式中，第一承载的配置信息包括第一承载标识和承载类型，承载类型为中继承载或普通承载，中继承载用于传输远端终端的数据或者用于传输远端终端和中继终端的数据，普通承载用于传输中继终端的数据。在另一种实现方式中，第一承载的配置信息包括第一承载标识和适配功能配置信息。在另一种实施方式中，第一承载的配置信息包括第一承载标识和承载释放指示信息。
可选地，适配功能配置信息包括远端终端的标识和远端终端的承载标识中的至少一种。
可选地，适配层逻辑实体为适配协议实体或PDCP协议实体的适配功能。
当适配层逻辑实体为PDCP协议实体的适配功能时，适配功能配置信息还包括用于指示中继终端打开或关闭PDCP协议实体的适配功能的指示信息。
相关细节可结合参考图6-图12的方法实施例。
需要说明的是，上述确定单元1601可以由处理器实现或者，处理器执行存储器中的程序指令来实现，上述发送单元1602可以由发射机实现，或者处理器配合发射机来实现。
图17示出了本发明一个实施例提供的中继通信装置的框图。该中继通信装置可以通过 专用硬件电路，或者，软硬件的结合实现成为中继终端的全部或一部分。该中继通信装置包括：接收单元1701、获取单元1702和发送单元1703。其中，接收单元用于接收MAC PDU，MAC PDU中包括媒体接入控制协议控制元素MAC CE，MAC CE包括远端终端的标识，MAC PDU携带远端终端的信令承载SRB0的数据；获取单元1702用于从接收单元1701接收到的MAC PDU的MAC CE中获取远端终端的标识；发送单元1703用于发送接收单元1701接收到的MAC PDU。
相关细节可结合参考图13a、图13b和图14的方法实施例。
需要说明的是，上述获取单元1702可以由处理器实现或者，处理器执行存储器中的程序指令来实现，上述接收单元1701可以由接收机实现，或者处理器配合接收机来实现，上述发送单元1703可以由发射机实现，或者处理器配合发射机来实现。
图18示出了本发明一个实施例提供的中继通信装置的框图。该中继通信装置可以通过专用硬件电路，或者，软硬件的结合实现成为接入网设备或者远端终端的全部或一部分。该中继通信装置包括：生成单元1801和发送单元1802。其中，生成单元1801用于生成媒体接入控制协议数据单元MAC PDU，MAC PDU中包括媒体接入控制协议控制元素MAC CE，MAC CE包括远端终端的标识，MAC PDU携带远端终端的信令承载SRB0的数据；发送单元1802用于向中继终端发送生成单元1801生成的MAC PDU。
其中，远端终端的标识为接入网设备和中继终端之间用于识别远端终端的标识，例如本地标识。
相关细节可结合参考图13a、图13b和图14的方法实施例。
需要说明的是，上述生成单元1801可以由处理器实现或者，处理器执行存储器中的程序指令来实现，上述发送单元1802可以由发射机实现，或者处理器配合发射机来实现。
图19是本发明实施例提供的一种通信芯片的结构示意图，应用在移动通信系统设备中，例如前述接入网设备或终端。该通信芯片包括：处理器1910、存储器1920和通信接口1930。处理器1910通过总线分别与存储器1920和通信接口1930相连。
通信接口1930用于与实现其它通信设备之间的通信。
处理器1910包括一个或一个以上处理核心。处理器1910通过运行操作系统或应用程序模块。
可选地，存储器1920可存储操作系统1922、至少一个功能所需的应用程序模块1924。可选地，应用程序模块1924包括：接收模块1924a、处理模块1924b和发送模块1924c。其中，接收模块1924a用于实现有关接收的步骤；处理模块1924b用于实现有关计算或处理的步骤；发送模块1924c用于实现有关发送的步骤。
此外，存储器1920可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如SRAM，EEPROM，EPROM，PROM，ROM，磁存储器，快闪存储器，磁盘或光盘。
本领域技术人员可以理解，图19中所示出的结构并不构成上述通信芯片的限定，可以包括比图示更多或更少的部件或组合某些部件，或者不同的部件布置。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (28)

  1. 一种中继通信方法，其特征在于，所述方法包括：
    中继终端接收接入网设备发送的第一消息，所述第一消息包括第一承载的配置信息；
    所述中继终端根据所述第一消息，为所述第一承载配置适配层逻辑实体，所述第一承载为所述中继终端和所述接入网设备之间的承载，所述适配层逻辑实体用于区分中继终端和远端终端的数据，或者不同远端终端的数据。
  2. 根据权利要求1所述的方法，其特征在于，所述第一承载的配置信息包括第一承载标识和适配功能配置信息。
  3. 根据权利要求2所述的方法，其特征在于，所述中继终端根据所述第一消息，为所述第一承载配置适配层逻辑实体，包括：
    若所述中继终端的已有承载中不存在所述第一承载，则所述中继终端建立所述第一承载，并按照所述适配功能配置信息为所述第一承载建立适配层逻辑实体；或者，
    若所述中继终端的已有承载中存在所述第一承载，则所述中继终端按照所述适配功能配置信息配置所述第一承载的适配层逻辑实体。
  4. 根据权利要求3所述的方法，其特征在于，所述中继终端按照所述适配功能配置信息配置所述第一承载的适配层逻辑实体，包括：
    为所述第一承载建立适配层逻辑实体；或者，
    重新配置所述第一承载的适配层逻辑实体；或者，
    释放所述第一承载的适配层逻辑实体。
  5. 根据权利要求2-4任一项所述的方法，其特征在于，所述适配功能配置信息包括远端终端的标识和远端终端的承载标识中的至少一种。
  6. 根据权利要求1所述的方法，其特征在于，所述第一承载的配置信息包括第一承载标识和承载释放指示信息。
  7. 根据权利要求6所述的方法，其特征在于，所述中继终端根据所述第一消息，为所述第一承载配置适配层逻辑实体，包括：
    所述中继终端释放所述第一承载的资源，所述第一承载的资源包括适配层逻辑实体。
  8. 根据权利要求1所述的方法，其特征在于，所述第一承载的配置信息包括第一承载标识和承载类型，所述承载类型为中继承载或普通承载，所述中继承载用于传输远端终端的数据或者用于传输远端终端和中继终端的数据，所述普通承载用于传输所述中继终端的数据。
  9. 根据权利要求8所述的方法，其特征在于，所述中继终端根据所述第一消息，为所述第一承载配置适配层逻辑实体，包括：
    若所述中继终端的已有承载中不存在所述第一承载且所述承载类型为中继承载，则按照所述承载类型建立所述第一承载并为所述第一承载建立所述适配层逻辑实体；或者，
    若所述中继终端的已有承载中存在所述第一承载，则按照所述承载类型配置所述第一承载的适配层逻辑实体。
  10. 根据权利要求9所述的方法，其特征在于，所述按照所述承载类型配置所述第一承载的适配层逻辑实体，包括：
    当所述已有承载中的第一承载为普通承载且所述承载类型为中继承载时，为所述第一承 载建立适配层逻辑实体；或者，
    当所述已有承载中的第一承载为中继承载且所述承载类型为普通承载时，释放所述第一承载的适配层逻辑实体。
  11. 根据权利要求1-10任一项所述的方法，其特征在于，所述适配层逻辑实体为适配协议实体或分组数据汇聚协议PDCP协议实体的适配功能。
  12. 根据权利要求2-5任一项所述的方法，其特征在于，所述适配功能配置信息还包括用于指示中继终端打开或关闭PDCP协议实体的适配功能的指示信息。
  13. 根据权利要求1-12任一项所述的方法，其特征在于，所述第一消息为无线资源控制RRC连接重配置消息。
  14. 一种中继通信方法，其特征在于，所述方法包括：
    接入网设备确定第一承载的配置信息，所述第一承载为所述接入网设备和中继终端之间的承载；
    接入网设备向所述中继终端发送第一消息，所述第一消息包括所述第一承载的配置信息，所述第一承载的配置信息用于指示所述中继终端为第一承载配置适配层逻辑实体，所述适配层逻辑实体用于区分中继终端和远端终端的数据，或者不同远端终端的数据。
  15. 根据权利要求14所述的方法，其特征在于，所述第一承载的配置信息包括第一承载标识和承载类型，所述承载类型为中继承载或普通承载，所述中继承载用于传输远端终端的数据或者用于传输远端终端和中继终端的数据，所述普通承载用于传输所述中继终端的数据；或者，所述第一承载的配置信息包括第一承载标识和适配功能配置信息；或者，所述第一承载的配置信息包括第一承载标识和承载释放指示信息。
  16. 根据权利要求14所述的方法，其特征在于，所述适配功能配置信息包括远端终端的标识和远端终端的承载标识中的至少一种。
  17. 根据权利要求14-16任一项所述的方法，其特征在于，所述适配层逻辑实体为适配协议实体或PDCP协议实体的适配功能。
  18. 根据权利要求15或16所述的方法，其特征在于，所述适配功能配置信息还包括用于指示中继终端打开或关闭PDCP协议实体的适配功能的指示信息。
  19. 根据权利要求14-18任一项所述的方法，其特征在于，所述第一消息为RRC连接重配置消息。
  20. 一种中继通信方法，其特征在于，所述方法包括：
    生成媒体接入控制协议数据单元MAC PDU，所述MAC PDU中包括媒体接入控制协议控制元素MAC CE，所述MAC CE包括远端终端的标识，所述MAC PDU携带所述远端终端的信令承载SRB0的数据；
    向中继终端发送所述MAC PDU。
  21. 根据权利要求20所述的方法，其特征在于，所述远端终端的标识为所述接入网设备和所述中继终端之间用于识别所述远端终端的标识。
  22. 一种中继通信方法，其特征在于，所述方法包括：
    接收媒体接入控制协议数据单元MAC PDU，所述MAC PDU中包括媒体接入控制协议控制元素MAC CE，所述MAC CE包括远端终端的标识，所述MAC PDU携带所述远端终端的信令承载SRB0的数据；
    从所述MAC PDU的MAC CE中获取远端终端的标识；
    发送所述MAC PDU。
  23. 一种中继通信装置，用于中继终端，其特征在于，所述装置包括：处理器、存储器以及通信接口；所述存储器用于存储软件程序以及模块，所述处理器通过运行或执行存储在所述存储器内的软件程序和/或模块实现：
    接收接入网设备发送的第一消息，所述第一消息包括第一承载的配置信息；
    根据所述第一消息，为所述第一承载配置适配层逻辑实体，所述第一承载为所述中继终端和所述接入网设备之间的承载，所述适配层逻辑实体用于区分中继终端和远端终端的数据，或者不同远端终端的数据。
  24. 一种中继通信装置，用于接入网设备，其特征在于，所述装置包括：处理器、存储器以及通信接口；所述存储器用于存储软件程序以及模块，所述处理器通过运行或执行存储在所述存储器内的软件程序和/或模块实现：
    确定第一承载的配置信息，所述第一承载为所述接入网设备和中继终端之间的承载；
    向所述中继终端发送第一消息，所述第一消息包括所述第一承载的配置信息，所述第一承载的配置信息用于指示所述中继终端为第一承载配置适配层逻辑实体，所述适配层逻辑实体用于区分中继终端和远端终端的数据，或者不同远端终端的数据。
  25. 一种中继通信装置，用于接入网设备或远端终端，其特征在于，所述装置包括：处理器、存储器以及通信接口；所述存储器用于存储软件程序以及模块，所述处理器通过运行或执行存储在所述存储器内的软件程序和/或模块实现：
    生成媒体接入控制协议数据单元MAC PDU，所述MAC PDU中包括媒体接入控制协议控制元素MAC CE，所述MAC CE包括远端终端的标识，所述MAC PDU携带所述远端终端的信令承载SRB0的数据；
    向中继终端发送所述MAC PDU。
  26. 一种中继通信装置，用于中继终端，其特征在于，所述装置包括：处理器、存储器以及通信接口；所述存储器用于存储软件程序以及模块，所述处理器通过运行或执行存储在所述存储器内的软件程序和/或模块实现：
    接收媒体接入控制协议数据单元MAC PDU，所述MAC PDU中包括媒体接入控制协议控制元素MAC CE，所述MAC CE包括远端终端的标识，所述MAC PDU携带所述远端终端的信令承载SRB0的数据；
    从所述MAC PDU的MAC CE中获取远端终端的标识；
    发送所述MAC PDU。
  27. 一种中继通信系统，所述系统包括接入网设备、中继终端和远端终端，其特征在于，所述接入网设备包括如权利要求24所述的中继通信装置，所述中继终端包括如权利要求23所述的中继通信装置。
  28. 一种中继通信系统，所述系统包括接入网设备、中继终端和远端终端，其特征在于，所述接入网设备和所述远端终端包括如权利要求25所述的中继通信装置，所述中继终端包括如权利要求26所述的中继通信装置。
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