WO2017166142A1 - 用于中继传输的方法和装置以及中继终端设备 - Google Patents

用于中继传输的方法和装置以及中继终端设备 Download PDF

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Publication number
WO2017166142A1
WO2017166142A1 PCT/CN2016/077919 CN2016077919W WO2017166142A1 WO 2017166142 A1 WO2017166142 A1 WO 2017166142A1 CN 2016077919 W CN2016077919 W CN 2016077919W WO 2017166142 A1 WO2017166142 A1 WO 2017166142A1
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WIPO (PCT)
Prior art keywords
terminal device
configuration information
relay
remote terminal
network device
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PCT/CN2016/077919
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English (en)
French (fr)
Inventor
曾元清
Original Assignee
广东欧珀移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to US16/067,723 priority Critical patent/US10574335B2/en
Priority to CN201680079188.0A priority patent/CN108476496B/zh
Priority to PCT/CN2016/077919 priority patent/WO2017166142A1/zh
Priority to EP16895923.7A priority patent/EP3393188B1/en
Priority to KR1020187021393A priority patent/KR20180125450A/ko
Priority to JP2018539102A priority patent/JP6714708B2/ja
Priority to TW106110663A priority patent/TWI725153B/zh
Publication of WO2017166142A1 publication Critical patent/WO2017166142A1/zh
Priority to HK18113122.4A priority patent/HK1254058A1/zh
Priority to US16/748,742 priority patent/US11223414B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15542—Selecting at relay station its transmit and receive resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/23—Manipulation of direct-mode connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • Embodiments of the present invention relate to the field of communications, and more particularly, to a method and apparatus for relay transmission and a relay terminal device.
  • D2D Device-to-device technology means that adjacent terminal devices can transmit data through a direct link in a short range without forwarding through the access network device.
  • D2D communication can share licensed band resources with the cellular system to form a unified hybrid cellular-D2D network.
  • some terminal devices can still work in the cellular communication mode, that is, communicate with other terminal devices through the access network device, and some terminal devices can work in D2D communication, that is, through a through link with other terminal devices.
  • the road transmits data directly to other terminal devices.
  • D2D relay receive and forward data in a half-duplex manner and perform mode conversion during reception and forwarding.
  • an Evovled Packet System (EPS) bearer is established between the D2D trunk and the cellular network, and the D2D terminal is invisible to the cellular network.
  • EPS Evovled Packet System
  • IP Internet Protocol
  • NET Internet Protocol
  • Embodiments of the present invention provide a method and apparatus for relay transmission and a relay terminal device, which can reduce processing complexity of relay transmission.
  • a first aspect provides a method for relay transmission, including: a relay terminal device sends a bearer setup request to a core network device, where the bearer setup request is used to request to establish an EPS bearer of a remote terminal device; the relay Receiving, by the terminal device, a reconfiguration message sent by the access network device, where the reconfiguration message carries configuration information of the EPS bearer established by the remote terminal device, where the EPS bearer includes the access network device and the relay terminal device Inter-cell cellular data transmission channel and the relay A D2D data transmission channel between the terminal device and the remote terminal device.
  • the method for relay transmission provided by the embodiment of the present invention sends a bearer setup request to the core network device by using the relay terminal device, where the bearer setup request is used to request to establish an EPS bearer of the remote terminal device, and the core network device and the connection
  • the network access device establishes an EPS bearer of the remote terminal device according to the bearer setup request, where the EPS bearer includes a cellular data transmission channel between the access network device and the relay terminal device, and the relay terminal device and the Device-to-device D2D data transmission channel between the remote terminal devices.
  • the relay terminal device can use the EPS bearer to relay data transmission between the remote terminal device and the access network device, which is beneficial for the relay terminal device to perform relaying in different manners without performing NET traversal. , thereby reducing the data processing complexity of the relay transmission.
  • the bearer setup request carries the terminal device identifier of the remote terminal device.
  • the configuration information of the EPS bearer includes configuration information of a cellular communication interface between the relay terminal device and the access network device, and the relay terminal device and the remote device
  • the configuration information of the communication interface is specifically the first configuration information of the physical layer and the first configuration information of the layer 2, and the configuration information of the D2D communication interface is specifically at least the second configuration information of the physical layer and the second configuration information of the layer 2 One.
  • the configuration information of the cellular communication interface between the relay terminal device and the access network device may be specifically configured by the user facing the layer between the access network device and the relay terminal device.
  • the configuration information of the D2D communication interface between the relay terminal device and the remote terminal device may be specific configuration information of the user facing the layer between the relay terminal device and the remote terminal device.
  • the first configuration information of the physical layer includes at least one of the following information: a part of the cellular communication interface for relay transmission a transmission resource information, a relay specific RNTI, a correspondence between a data volume interval of the relay transmission and a PUCCH resource, and a correspondence between a data volume interval of the relay transmission and a preamble, wherein the relay specific RNTI
  • the access network device performs scrambling on a physical downlink control channel for scheduling downlink data transmission of the remote terminal device;
  • the second configuration information of the physical layer includes: the relay transmission on the D2D communication interface. Information about the second transmission resource.
  • the first configuration information of layer two includes at least one of the following information: a relay specific LCID and a layer two identifier allocated to the remote terminal device, wherein the relay specific LCID is used to identify the relay transmission; and/or
  • the second configuration information of the layer 2 includes: a layer 2 identifier allocated to the remote terminal device.
  • the configuration information of the EPS bearer further includes a configuration of a user facing layer between the access network device and the remote terminal device.
  • the method further includes: transmitting, to the remote terminal device, configuration information of a user facing layer between the access network device and the remote terminal device.
  • the method before the relay terminal device sends a bearer setup request to the core network device, the method further includes: the relay terminal device receiving the far a connection establishment request of the terminal device, the connection establishment request is used to request to establish a D2D communication link between the relay terminal device and the remote terminal device; the relay terminal device sends a bearer establishment request to the core network device, including The relay terminal device sends a bearer setup request to the core network device according to the connection establishment request.
  • the relay terminal device sends a bearer setup request to the core network device, where the relay terminal device sends the non-access to the core network device.
  • Layer message the non-access stratum message receives the bearer setup request.
  • the bearer setup request carries a terminal device identifier of the remote terminal device, where the EPS bearer is the core network device by using the access network
  • the device sends the application layer protocol signaling, where the application layer protocol signaling carries the terminal device identifier of the remote terminal device.
  • the core network device may be an MME.
  • the MME may send the application layer protocol signaling to the access network device by using an S1 interface with the access network device.
  • the relay terminal device sends a bearer setup request to the core network device, where the relay terminal device sends the RRC to the access network device.
  • the RRC message carries the bearer setup request, so that the access network device sends an application layer protocol signaling for requesting to establish a bearer of the remote terminal device to the core network device according to the RRC message.
  • the application layer protocol signaling sent by the access network device to the core network device may carry the bearer setup request, so that the core network device may perform the identifier information of the remote terminal device carried in the bearer setup request.
  • the bearer setup request is further used to request to establish a PDN connection of the remote terminal device;
  • the reconfiguration message further carries configuration information of the PDN connection established for the remote terminal device;
  • the method further includes: the relay terminal device is located at the far end The terminal device sends configuration information of the PDN connection.
  • a method for relay transmission including: receiving, by a core network device, a bearer setup request sent by a relay terminal device, where the bearer setup request is used to request to establish an EPS bearer of the remote terminal device;
  • the core network device establishes an EPS bearer of the remote terminal device according to the bearer setup request, where the EPS bearer includes a cellular data transmission channel between the access network device and the relay terminal device, and the relay terminal device and the D2D data transmission channel between remote terminal devices.
  • the bearer setup request carries the terminal device identifier of the remote terminal device.
  • the core network device receives a bearer setup request sent by the relay terminal device, where the core network device receives the non-transmission sent by the relay terminal device.
  • the access layer message, the non-access stratum message receives the bearer setup request;
  • the core network device establishes an EPS bearer of the remote terminal device according to the bearer setup request, including: the core network device passes the access network device
  • the application layer protocol signaling is sent, where the application layer protocol signaling carries the terminal device identifier of the remote terminal device.
  • the application layer protocol signaling carries the bearer setup request.
  • the core network device receives a bearer setup request sent by the relay terminal device, where the core network device receives the sent by the access network device.
  • the application layer protocol signaling is sent by the access network device according to the RRC message sent by the relay terminal device, where the RRC message carries the bearer setup request.
  • a third aspect provides a method for relay transmission, including: an access network device receiving a bearer setup request, where the bearer setup request is used to request to establish an EPS bearer of a remote terminal device; Establishing a bearer setup request to establish an EPS bearer of the remote terminal device, where the EPS bearer includes a cellular data transmission channel between the access network device and the relay terminal device, and the relay terminal device and the remote terminal device The D2D data transmission channel; the access network device sends a reconfiguration message to the relay terminal device, where the reconfiguration message carries the configuration information of the EPS bearer.
  • the bearer setup request carries the terminal device identifier of the remote terminal device.
  • the configuration information of the EPS bearer includes configuration information of a cellular communication interface between the relay terminal device and the access network device, and the relay terminal device and the remote device
  • the configuration information of the communication interface is specifically the first configuration information of the physical layer and the first configuration information of the layer 2, and the configuration information of the D2D communication interface is specifically at least the second configuration information of the physical layer and the second configuration information of the layer 2 One.
  • the first configuration information of the physical layer includes at least one of the following information: a transmission resource information, a relay specific RNTI, a correspondence between a data volume interval of the relay transmission and a PUCCH resource, and a correspondence between a data volume interval of the relay transmission and a preamble, wherein the relay specific RNTI
  • the access network device performs scrambling on a physical downlink control channel for scheduling downlink data transmission of the remote terminal device;
  • the second configuration information of the physical layer includes: the relay transmission on the D2D communication interface. Information about the second transmission resource.
  • the first configuration information of the layer 2 includes at least one of the following information: relaying a specific LCID and allocating the remote terminal device The layer 2 identifier, wherein the relay specific LCID is used to identify the relay transmission; and/or the second configuration information of the layer 2 includes: a layer 2 identifier allocated to the remote terminal device.
  • the configuration information of the EPS bearer further includes a configuration of a user facing layer between the access network device and the remote terminal device. information.
  • the access network device receives the bearer setup request, and the access network device receives the RRC message sent by the relay terminal device, where The RRC message carries the bearer setup request; the access network device establishes an EPS bearer of the remote terminal device according to the bearer setup request, and includes: the access network device sends, according to the RRC message, a request for establishing to the core network device.
  • Application layer protocol signaling carried by the remote terminal device.
  • the access network device receives the bearer setup request, where the access network device receives the application layer protocol signaling sent by the core network device, The application layer protocol signaling carries the bearer setup request.
  • the bearer setup request is further used to request to establish a PDN connection of the remote terminal device.
  • the method further includes: the access network device establishing a PDN connection of the remote terminal device according to the bearer setup request; the access network device is configured to The relay terminal device sends configuration information of the PDN connection.
  • an apparatus for relay transmission for performing the method of any of the first aspect or the first aspect of the first aspect.
  • the apparatus comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • the apparatus comprises means for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.
  • the apparatus comprises means for performing the method of any of the possible implementations of the third aspect or the third aspect described above.
  • another apparatus for relay transmission comprising: a storage unit and a processor, the storage unit for storing an instruction for executing the instruction stored by the memory, and when the processor executes The execution of the memory causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.
  • another apparatus for relay transmission comprising: a storage unit and a processor, the storage unit for storing instructions for executing instructions stored by the memory, and when the processor executes The execution of the memory causes the processor to perform the method of any of the possible implementations of the second aspect or the second aspect.
  • another apparatus for relay transmission comprising: a storage unit and a processor for storing instructions for executing instructions stored by the memory, and when the processor executes The execution of the memory causes the processor to perform the method of any of the possible implementations of the third aspect or the third aspect.
  • a tenth aspect a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a twelfth aspect there is provided another computer readable medium for storing a computer program,
  • the computer program includes instructions for performing the method of any of the third aspect or any of the possible implementations of the third aspect.
  • the relay terminal device sends a bearer setup request through the access network device, where the bearer setup request is used to request to establish an EPS bearer of the remote terminal device, and the access network device may be configured according to the The bearer setup request is established to establish an EPS bearer of the remote terminal device, where the EPS bearer may include a data transmission tunnel between the core network device and the access network device, and between the access network device and the relay terminal device. Wireless bearer.
  • the relay terminal device can use the EPS bearer to relay data between the remote terminal device and the core network device, without performing NET traversal, thereby reducing data processing complexity of the relay transmission.
  • FIG. 1 is a schematic flowchart of a wireless communication system to which an embodiment of the present invention is applied.
  • FIG. 2 is a schematic flowchart of a method for relay transmission provided by an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an example of a user plane protocol stack for relay communication of various devices according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of another user plane protocol stack example for relay communication of various devices according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of another method for relay transmission according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of another method for relay transmission according to an embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of a relay terminal device according to an embodiment of the present invention.
  • FIG. 8 is a schematic block diagram of an apparatus for relay transmission according to an embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of another apparatus for relay transmission according to an embodiment of the present invention.
  • FIG. 10 is a schematic block diagram of another relay terminal device according to an embodiment of the present invention.
  • FIG. 11 is a schematic block diagram of another apparatus for relay transmission according to an embodiment of the present invention.
  • FIG. 12 is a schematic block diagram of another apparatus for relay transmission according to an embodiment of the present invention.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • Access network device 100 can be a device that communicates with a terminal device. Each access network device 100 can provide communication coverage for a particular geographic area and can communicate with terminal devices located within the coverage area.
  • the access network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a Code Division Multiple Access (CDMA) system, or a base station (NodeB, NB) in a WCDMA system.
  • BTS Base Transceiver Station
  • CDMA Code Division Multiple Access
  • NodeB, NB base station
  • eNB evolved Node B
  • CRAN Cloud Radio Access Network
  • PLMN Public Land Mobile Network
  • the wireless communication system 100 also includes a plurality of terminal devices 120 located within the coverage of the access network device 110.
  • the terminal device 120 can be mobile or fixed.
  • the terminal device 120 can refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user. Agent or user device.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • FIG. 1 exemplarily shows an access network device and six terminal devices.
  • the wireless communication system 100 may include multiple access network devices and may include other within the coverage of each access network device. The number of terminal devices is not limited in this embodiment of the present invention.
  • the wireless communication system 100 may further include other network entities such as a Mobile Management Entity (MME), a Serving Gateway (S-GW), and a Packet Data Network Gateway (P-GW).
  • MME Mobile Management Entity
  • S-GW Serving Gateway
  • P-GW Packet Data Network Gateway
  • the terminal device 120 can communicate in a cellular communication mode or a D2D communication mode, wherein in the cellular communication mode, the terminal device can communicate with other terminal devices through the access network device; in the D2D communication mode, the terminal device can pass The D2D link communicates directly with other terminal devices.
  • a cellular terminal device, a D2D terminal device, and a relay terminal device are included, wherein the cellular terminal device communicates with the access network device 110 using a cellular communication technology.
  • the D2D terminal device implements data transmission with the access network device through the relay terminal device, wherein the relay terminal device and the D2D terminal device have a PC5 interface, and the D2D communication technology is used for communication, wherein the D2D communication technology can Specifically, it is a bypass (SideLink, SL) technology in the LTE, and may be a technology such as WIFI or Bluetooth in the WLAN, or other D2D communication technologies, which is not limited by the embodiment of the present invention.
  • the relay terminal device and the access network device have a Uu interface, and communicate using a cellular communication technology.
  • FIG. 2 schematically illustrates a method 200 for relay transmission provided by an embodiment of the present invention.
  • the method 200 can be applied to the wireless communication system shown in FIG. 1 , but the embodiment of the present invention does not limit this.
  • the relay terminal device sends a bearer setup request to the core network device, where the bearer setup request is used to request to establish an EPS bearer of the remote terminal device.
  • the bearer setup request is used to request to establish an EPS bearer of the remote terminal device.
  • the request for establishing a default EPS bearer of the remote terminal device, or requesting to establish a dedicated EPS bearer of the remote terminal device is not limited in this embodiment of the present invention.
  • the bearer setup request may also be used to request to establish a PDN connection of the remote terminal device, but the implementation of the present invention is implemented. The example is not limited to this.
  • the bearer setup request may carry information about the remote terminal device, for example, the remote end.
  • the terminal device identifier of the terminal device optionally, if the PDN connection of the remote terminal device has been established, the information of the remote terminal device may include the IP address of the remote terminal device, but the embodiment of the present invention is not limited thereto. this.
  • the relay terminal device may send the bearer setup request after establishing a D2D communication link (which may also be referred to as a PC5 connection) with the remote terminal device.
  • the relay terminal device may also send the bearer setup request according to the connection establishment request when receiving the connection establishment request of the remote terminal device, where the connection establishment request is used to request to establish the relay terminal.
  • the D2D communication link between the device and the remote terminal device for example, the connection establishment request may be specifically a direct communication request for requesting establishment of a PC5 link between the relay terminal device and the remote terminal device, However, embodiments of the invention are not limited thereto.
  • the core network device may be specifically a Mobility Management Entity (MME) or other device.
  • MME Mobility Management Entity
  • the core network device is specifically described as an MME, but the embodiment of the present invention does not. Limited to this.
  • the relay terminal device may send the bearer setup request to the core network device by sending a Radio Resource Control (RRC) message to the access network device.
  • RRC Radio Resource Control
  • the relay terminal device may send an RRC message to the access network device, where the RRC message carries the bearer setup request.
  • the access network device may send the application layer protocol signaling to the core network device to request the core network device to establish the EPS bearer of the remote terminal device, but the embodiment of the present invention is not limited thereto. .
  • the relay terminal device may also send a non-access stratum (NAS) message to the core network device, where the NAS message carries the bearer setup request, but the embodiment of the present invention is not limited thereto.
  • NAS non-access stratum
  • the core network device may establish an EPS bearer of the remote terminal device together with the access network device according to the bearer setup request, where the EPS bearer includes the access network device and the a cellular data transmission channel between the relay terminal devices and a device-to-device D2D data transmission channel between the relay terminal device and the remote terminal device.
  • the EPS bearer may further include a data transmission channel between the core network device and the access network device, and a data transmission channel between the core network device and the P-GW, where optionally, the core network
  • the data transmission channel between the device and the access network device and the data transmission channel between the core network device and the P-GW may be collectively referred to as a GPRS Tunneling Protocol (GTP) tunnel, but the embodiment of the present invention is not limited thereto. .
  • GTP GPRS Tunneling Protocol
  • the core network device may also perform authentication on the remote terminal device before establishing the EPS bearer, for example, identity authentication, security authentication. Rights, etc., but embodiments of the invention are not limited thereto.
  • the core network device may send the information of the remote terminal device to the P-GW, so that the P-GW establishes a GTP tunnel of the remote terminal device according to the information of the remote terminal device.
  • the core network device may further receive configuration information of the GTP tunnel sent by the P-GW, for example, a Tunnel Endpoint Identifier (TEID), etc., which is allocated to the remote terminal device, and the like. There is no limit to this.
  • TEID Tunnel Endpoint Identifier
  • the core network device may further send the application layer protocol signaling to the access network device, where the application layer protocol signaling may carry the terminal device identifier of the remote terminal device, so as to facilitate the access network device.
  • Establishing a radio bearer of the remote terminal device according to the application layer protocol signaling where the radio bearer of the remote terminal device may include a data transmission channel between the access network device and the relay terminal device, and the relay A data transmission channel between the terminal device and the remote terminal device.
  • the application layer protocol signaling may be specifically an initial context establishment request (INITIAL CONTEXT SETUP REQUEST) or a radio access bearer (RAB) establishment request, and the like, which is not limited in this embodiment of the present invention. .
  • the access network device sends a reconfiguration message to the relay terminal device, where the reconfiguration message carries configuration information of the EPS bearer established for the remote terminal device.
  • the reconfiguration message may be specifically an RRC connection reconfiguration message
  • the configuration information of the EPS bearer may include configuration information of the radio bearer established by the access network device for the remote terminal device.
  • the configuration information of the radio bearer may include at least one of the following information: configuration information of the user facing the layer between the access network device and the relay terminal device, the relay terminal device and the remote end.
  • the relay terminal device may relay data transmission between the remote terminal device and the network device by using a layer other than the IP layer.
  • the relay terminal device may adopt a layer one relay or a layer two relay manner.
  • the layer-one relay may be specifically a physical layer relay
  • the layer two relay may be specifically a media access control (MAC) layer relay, a radio link control (RLC) layer relay, or Packet Data Convergence Protocol (PDCP) layer relay, but the present invention
  • the manner in which the relay terminal device performs relay transmission is not limited.
  • the relay terminal device may adopt a layer-by-relay manner.
  • the user plane protocol stack of the relay terminal device may only include a physical layer, for example, in the user plane protocol stack example shown in FIG. 3, the physical layer of the relay terminal device and the physical of the remote terminal device respectively
  • the physical layer of the layer and the network device is a peer layer, and the network device and the upper layer of the remote terminal device (for example, layer 2, layer 3, and the like) are peer layers, but the embodiment of the present invention is not limited thereto.
  • the data may be encapsulated into a MAC PDU, where the MAC PDU carries the identification information of the remote terminal device;
  • the MAC PDU is processed to generate a physical layer data frame, and the physical layer data frame is sent to the relay terminal device through the physical layer.
  • the relay terminal device may process and forward the data carried in the physical layer data frame at the physical layer without identifying the physical layer.
  • the remote terminal device corresponding to the data frame correspondingly, the network device or the remote terminal device that receives the data transmitted by the relay terminal device through the physical layer identifies the data at a high level (for example, layer 2 or layer 3) Corresponding remote terminal device, but the embodiment of the present invention is not limited thereto.
  • the configuration information of the radio bearer may include configuration information of a user facing layer between the access network device and the relay terminal device, that is, the relay terminal device and the access network device.
  • the configuration information of the cellular communication interface may include configuration information of the layer 1 (ie, physical layer) of the access network device and the relay terminal device for relay transmission with the other party.
  • the configuration information may be configured. It is referred to as first configuration information of the physical layer, but the embodiment of the present invention is not limited thereto.
  • the first configuration information of the physical layer includes at least one of the following information: information about a first transmission resource used for relay transmission, and a Radio Network Temporary Identity (RNTI), Correspondence between the data volume interval of the relay transmission and the physical uplink control channel PUCCH resource and the correspondence between the data volume interval of the relay transmission and the preamble.
  • RNTI Radio Network Temporary Identity
  • the first configuration information of the physical layer may further include other information for performing relay transmission, which is not limited in this embodiment of the present invention.
  • the first transmission resource used for the relay transmission may be specifically used to transmit the relay data between the relay terminal device and the access network device.
  • the physical layer data frame may be configured to carry the relay data according to the first transmission resource occupied by the physical layer data frame.
  • embodiments of the invention are not limited thereto.
  • the relay specific RNTI can be used to identify relay data.
  • the access network device may use the relay specific RNTI to scramble a physical downlink control channel (PDCCH) for scheduling downlink data transmission of the remote terminal device, so that the relay
  • the terminal device may determine that the received physical layer data frame carries the relay data by the relay specific RNTI addressing, but the embodiment of the present invention is not limited thereto.
  • PDCCH physical downlink control channel
  • the relay terminal device may request an uplink authorization from the network device.
  • the relay terminal device may send a buffer status report to the network device, where the cache status report carries information about the amount of cached data of the relay terminal device, so that the network device can report according to the cache status. And allocating an uplink transmission resource to the relay terminal device.
  • the first configuration information of the physical layer may also include a correspondence between a data volume interval of the relay transmission and a Physical Uplink Control Channel (PUCCH) resource.
  • the relay terminal device can determine the PUCCH resource corresponding to the data volume size to be relayed according to the correspondence between the data volume interval and the PUCCH resource, and send a scheduling request to the network device by using the corresponding PUCCH resource.
  • the network device may determine the data volume interval to be transmitted by the relay terminal device according to the PUCCH resource occupied by the scheduling request, and allocate the uplink transmission resource according to the foregoing, but the embodiment of the present invention is not limited thereto.
  • the first configuration information of the physical layer may also include a correspondence between a data volume interval of the relay transmission and the preamble.
  • the relay terminal device can request the uplink authorization by transmitting the preamble to the network device.
  • the relay terminal device may determine a preamble corresponding to the data volume size to be relayed according to the correspondence between the data volume interval and the preamble, and send the corresponding preamble to the network device.
  • the network device may determine the data volume interval to be transmitted by the relay terminal device according to the corresponding preamble, and allocate the uplink transmission resource according to the foregoing, but the embodiment of the present invention is not limited thereto.
  • the first configuration information of the physical layer may further include configuration information of a user facing layer between the relay terminal device and the remote terminal device, that is, the relay terminal device and the remote terminal.
  • the configuration information of the D2D communication interface may include configuration information of the layer 1 (ie, physical layer) of the relay terminal device and the remote terminal device for relay transmission with the other party.
  • the configuration information may be configured.
  • the second configuration information is referred to as a physical layer, but the embodiment of the present invention is not limited thereto.
  • the set information may include information for relaying the second transmission resource, wherein the second transmission resource is used for relay transmission between the relay terminal device and the remote terminal device.
  • the relay terminal device when the relay terminal device receives the physical layer data frame transmitted by the remote terminal device by using the second transmission resource, or when the remote terminal device receives the relay terminal device, the relay terminal device transmits the second transmission resource.
  • the physical layer data frame may be configured to carry the relay data according to the second transmission resource occupied by the physical layer data frame, but the embodiment of the present invention is not limited thereto.
  • the second configuration information of the physical layer may further include other information, which is not limited by the embodiment of the present invention.
  • the configuration information of the radio bearer may further include configuration information of a user facing layer between the access network device and the remote terminal device.
  • configuration information of the MAC layer, configuration information of the RLC layer, and configuration information of the PDCP layer is further included.
  • the relay terminal device may further send configuration information of the user facing layer between the access network device and the remote terminal device to the remote terminal device.
  • the remote terminal device may configure at least one of a MAC layer, an RLC layer, and a PDCP layer, but the embodiment of the present invention is not limited thereto.
  • the relay terminal device may also adopt a layer two relay manner, for example, adopting a MAC layer relay, an RLC layer relay, or a PDCP layer relay.
  • the user plane protocol stack of the relay terminal device may include only at least one of the physical layer and the layer 2, for example, in the user plane protocol stack example shown in FIG. 4, the relay terminal device adopts the MAC layer.
  • the physical layer of the relay terminal device is respectively a peer layer with the physical layer of the remote terminal device and the physical layer of the network device, and the MAC layer of the relay terminal device is respectively associated with the network device and the remote terminal.
  • the MAC layer of the device is a peer layer
  • the network device and the RLC layer and the PDCP layer and the higher layer of the remote terminal device are peer layers, but the embodiment of the present invention is not limited thereto.
  • the relay terminal device may identify the remote terminal device according to the identification information of the remote terminal device, where the identifier information of the remote terminal device may include the terminal device identifier of the remote terminal device. Or layer two logo.
  • the data may be encapsulated into a layer 2 PDU, that is, a PDU generated by layer 2 and layer 1 two-layer encapsulation, wherein the layer 2
  • the PDU may carry the identification information of the remote terminal device, or when the access network device sends the relay data to the relay terminal device, the network device may pass the PDCCH pair scrambled by the RNTI of the remote terminal device.
  • the Layer 2 PDU is scheduled.
  • the relay terminal device may receive the received layer at the layer 2
  • the Layer 2 PDU is processed, for example, the layer 2 identifies the remote terminal device corresponding to the received Layer 2 PDU according to the identifier information of the remote terminal device, or encapsulates the layer 2 according to the identifier information of the remote terminal device.
  • the Layer 2 PDU sent by the receiving device and the like, but the embodiment of the present invention is not limited thereto.
  • the configuration information of the user facing the equal layer between the access network device and the relay terminal device may specifically include that the access network device and the relay terminal device are used to perform with the other party.
  • the configuration information of the layer 1 and the layer 2 of the transmission, where the configuration information of the layer 2 may include configuration information of the MAC layer, or further includes configuration information of the RLC layer, or further includes Configuration information of the RLC layer and the PDCP layer.
  • the configuration information of the layer 1 and the layer 2 may be referred to as the first configuration information of the physical layer and the first configuration information of the layer 2, but the embodiment of the present invention is not limited thereto.
  • the first configuration information of the physical layer may be referred to the foregoing description.
  • the first configuration information of the physical layer may further include a target preamble allocated by the network device to the remote terminal device.
  • the target preamble may be used to initiate an uplink authorization request to the access network device, and the access network is used.
  • the device may determine the remote terminal device corresponding to the uplink authorization request according to the target preamble, and allocate an uplink transmission resource for the data of the remote terminal device, but the embodiment of the present invention is not limited thereto.
  • the first configuration information of the physical layer may further include an RNTI allocated by the network device to the remote terminal device.
  • the PDCCH allocated for the remote terminal device may be used to scramble the PDCCH for scheduling downlink data transmission of the remote terminal device.
  • the remote terminal device corresponding to the received Layer 2 PDU is addressed by the RNTI, but the embodiment of the present invention is not limited thereto.
  • the first configuration information of the layer 2 may include at least one of the following information: a logical specific channel identifier (LCID), a layer 2 identifier allocated to the remote terminal device, and the far The RNTI allocated by the terminal device.
  • the first configuration information of the layer 2 may further include other information for performing relay transmission, which is not limited by the embodiment of the present invention.
  • the relay specific LCID can be used to identify a relay transmission.
  • the access network device receives the layer 2 PDU sent by the relay terminal device or the relay terminal device receives the The Layer 2 PDU sent by the access network device may be determined to carry the relay data in the Layer 2 PDU according to the relay specific LCID carried in the Layer 2 PDU, but the embodiment of the present invention is not limited thereto.
  • the layer 2 identifier may be an identifier that is encapsulated and identified in the layer 2, and the layer 2 identifier may be used to identify the remote terminal device in the relay transmission.
  • the length of the layer 2 identifier may be less than the length of the terminal device. In this way, the carrying of the layer 2 identifier in the PDU can reduce the signaling overhead, but the embodiment of the present invention is not limited thereto.
  • the layer 2 identifier may be set at a MAC layer, an RLC layer, or a PDCP layer.
  • the remote terminal device and the layer 2 of the access network device may further add an adaptation layer, where the adaptation layer may be located at any optional location between the MAC layer and the PDCP layer, and the The layer 2 identifier is disposed in the adaptation layer, but the embodiment of the present invention is not limited thereto.
  • the configuration information of the user facing the layer between the relay terminal device and the remote terminal device may include a physical medium of the relay terminal device and the remote terminal device for relaying with the other party.
  • the configuration information of the layer and the layer 2 may be referred to as the second configuration information of the physical layer and the second configuration information of the layer 2 respectively for the description of the configuration information of the physical layer and the layer 2, but the embodiment of the present invention is not limited thereto.
  • the second configuration information of the physical layer can be referred to the foregoing description, and details are not described herein for brevity.
  • the second configuration information of the layer 2 may include the layer 2 identifier or other information of the remote terminal device, but the embodiment of the present invention is not limited thereto.
  • the configuration information of the user facing layer between the access network device and the remote terminal device may include at least one of RLC layer configuration information and PDCP layer configuration information.
  • the relay terminal The device may send indication information indicating at least one of the RLC layer configuration information and the PDCP layer configuration information to the remote terminal device, so that the remote terminal device performs corresponding configuration, but the embodiment of the present invention is not limited thereto.
  • the access network device may further establish a PDN connection of the remote terminal device with the core network device, and
  • the terminal device sends configuration information of the PDN connection, such as an IP address, and the like.
  • the relay terminal device may also send the configuration information of the PDN connection to the remote terminal device, and the embodiment of the present invention is not limited thereto.
  • the relay terminal device may perform corresponding configuration according to the configuration information of the EPS bearer, and send a reconfiguration complete message (such as an RRC connection reconfiguration complete message) and uplink information to the access network device after the configuration is completed.
  • a reconfiguration complete message such as an RRC connection reconfiguration complete message
  • uplink information to the access network device after the configuration is completed.
  • the Uplink Information Transfer message is converted, but the embodiment of the present invention is not limited thereto.
  • the method for relay transmission sends a bearer setup request to the core network device by using the relay terminal device, where the bearer setup request is used to request to establish an EPS bearer of the remote terminal device, where the core network
  • the device and the access network device establish an EPS bearer of the remote terminal device according to the bearer setup request, where the EPS bearer includes a cellular data transmission channel between the access network device and the relay terminal device, and the relay A device-to-device D2D data transmission channel between the terminal device and the remote terminal device.
  • the relay terminal device can use the EPS bearer to relay data transmission between the remote terminal device and the access network device, which is beneficial for the relay terminal device to perform relaying in different manners without performing NET traversal. , thereby reducing the data processing complexity of the relay transmission.
  • the cellular network has established a PDN connection and a bearer for the remote terminal device, and the remote terminal device is specifically a remote UE, and the relay terminal device is specifically a relay UE, and the network device is specifically eNB, but embodiments of the present invention are not limited thereto.
  • FIG. 5 is a schematic diagram of a method 300 for establishing a bearer according to an embodiment of the present invention.
  • the remote terminal device has been attached to a cellular network (such as an Evolved Universal Terrestrial Radio Access Network (E-UTRAN), or the remote terminal device has been established with the cellular network.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • the PDN connection is provided, but the embodiment of the present invention is not limited thereto.
  • the remote terminal device discovers the relay terminal device and camps on.
  • the remote terminal device sends a direct communication request to the relay terminal device, where the direct communication request may carry the terminal device identifier of the remote terminal device and the IP address of the PDN connection of the remote terminal device. .
  • the direct communication request may be specifically used to establish a D2D communication link between the remote terminal device and the relay terminal device, for example, a PC5 connection between the remote terminal device and the relay terminal device, but the present invention The embodiment is not limited to this.
  • the relay terminal device After receiving the direct communication request sent by the remote terminal device, the relay terminal device reports the terminal device identifier of the remote terminal device and the IP address of the PDN connection to the MME through the eNB.
  • the MME may store the terminal device identifier and an IP address, and transmit the same to the P-GW. (or S-GW).
  • the MME and the P-GW allocate a GTP tunnel of the S1-U interface, such as a Tunnel Endpoint Identifier (TEID), to the remote terminal device.
  • TEID Tunnel Endpoint Identifier
  • the eNB allocates a radio bearer between the relay terminal device and the eNB for the remote terminal device.
  • the configuration information of the radio bearer may include physical layer configuration information or physical layer configuration information and MAC layer configuration information.
  • the MAC layer configuration information may include a layer 2 identifier allocated to the remote terminal device.
  • the eNB may also send the RLC layer configuration and/or the PDCP layer configuration of the remote terminal device to the relay terminal device, but the embodiment of the present invention is not limited thereto.
  • the relay terminal device sends a direct communication response to the remote terminal device.
  • the direct communication response may carry the layer 2 identifier and/or the RRC container, where the RRC container may be encapsulated with an RLC layer configuration and/or a PDCP layer configuration.
  • the remote terminal device may configure a corresponding RLC layer and/or a PDCP layer according to the RRC container in the direct communication response, but the embodiment of the present invention is not limited thereto.
  • FIG. 6 is a schematic diagram of another method 400 for establishing a bearer according to an embodiment of the present invention.
  • the remote terminal device has not established a PDN connection.
  • the remote terminal device discovers the relay terminal device and camps on.
  • the remote terminal device sends a direct communication request to the relay terminal device, where the direct communication request may carry the terminal device identifier of the remote terminal device and the indication information for requesting to establish a PDN connection.
  • the direct communication request may be used to request to establish a PC5 connection between the remote terminal device and the relay terminal device, and is also used to request to establish a PDN connection between the remote terminal device and the cellular network.
  • the relay terminal device may send a PDN connection establishment request to the MME through the eNB according to the direct communication request, requesting to establish a PDN connection of the remote terminal device.
  • the PDN connection establishment request may carry the terminal device identifier of the remote terminal device.
  • the core network device (MME or S-GW/P-GW) creates a PDN connection for the remote terminal device and assigns an IP address to the remote terminal device.
  • the MME sends a PDN connection setup response to the relay terminal device by using the eNB, where the PDN connection setup response carries configuration information of the PDN connection, such as an IP address.
  • the MME allocates an S1-U GTP tunnel, such as a TEID, to the remote terminal device.
  • the eNB allocates a radio bearer between the relay terminal device and the eNB for the remote terminal device.
  • the configuration information of the radio bearer may include configuration information of the physical layer or configuration information of the physical layer and configuration information of the layer 2, but the embodiment of the present invention is not limited thereto.
  • the relay terminal device sends a direct communication response to the remote terminal device.
  • the direct communication response may carry the layer 2 identifier and/or the RRC container, and the direct communication response may further carry the information of the PDN connection, such as an IP address, etc., but the embodiment of the present invention is not limited thereto.
  • FIG. 3 to FIG. 6 are intended to assist those skilled in the art to better understand the embodiments of the present invention, and are not intended to limit the scope of the embodiments of the present invention. It will be obvious to those skilled in the art that various modifications and changes can be made without departing from the scope of the embodiments of the present invention.
  • a method for relay transmission according to an embodiment of the present invention is described in detail above with reference to FIGS. 1 through 6, and a device for relay transmission according to an embodiment of the present invention will be described in detail below with reference to FIGS. 7 through 12. .
  • FIG. 7 shows a relay terminal device 500 according to an embodiment of the present invention.
  • the relay terminal device 500 includes:
  • the sending unit 510 is configured to send, to the core network device, a bearer setup request, where the bearer setup request is used to request to establish an EPS bearer of the remote terminal device;
  • the receiving unit 520 is configured to receive a reconfiguration message sent by the access network device, where the reconfiguration message carries configuration information of an EPS bearer established by the remote terminal device, where the EPS bearer includes the access network device and the middle A cellular data transmission channel between the terminal devices and a D2D data transmission channel between the relay terminal device and the remote terminal device.
  • the bearer setup request carries the terminal device identifier of the remote terminal device.
  • the configuration information of the EPS bearer includes configuration information of a cellular communication interface between the relay terminal device and the access network device, and a D2D communication interface between the relay terminal device and the remote terminal device. Configuration information.
  • the configuration information of the cellular communication interface is specifically the first configuration information of the physical layer, and the configuration information of the D2D communication interface is specifically the second configuration information of the physical layer;
  • the configuration information of the cellular communication interface is specifically the first configuration information of the physical layer and the second layer
  • the configuration information of the D2D communication interface is specifically at least one of the second configuration information of the physical layer and the second configuration information of the layer 2.
  • the first configuration information of the physical layer includes at least one of the following information: information about the first transmission resource for relay transmission on the cellular communication interface, relaying the specific RNTI, and the amount of data transmitted by the relay.
  • information about the first transmission resource for relay transmission on the cellular communication interface includes at least one of the following information: information about the first transmission resource for relay transmission on the cellular communication interface, relaying the specific RNTI, and the amount of data transmitted by the relay.
  • the relay specific RNTI is used by the access network device pair to schedule the remote terminal device
  • the physical downlink control channel of the downlink data transmission is scrambled.
  • the second configuration information of the physical layer includes: information about the second transmission resource used for relay transmission on the D2D communication interface.
  • the first configuration information of the layer 2 includes at least one of the following information: a relay specific LCID and a layer two identifier allocated to the remote terminal device, where the relay specific LCID is used to identify the relay transmission.
  • the second configuration information of the layer 2 includes: a layer 2 identifier allocated to the remote terminal device.
  • the configuration information of the EPS bearer further includes configuration information of a user facing layer between the access network device and the remote terminal device.
  • the sending unit 510 is further configured to send, to the remote terminal device, configuration information of a user facing layer between the access network device and the remote terminal device.
  • the receiving unit 520 is further configured to: before the sending unit 510 sends a bearer setup request to the core network device, receive a connection establishment request of the remote terminal device, where the connection establishment request is used to request to establish the relay terminal device. a D2D communication link with the remote terminal device;
  • the sending unit 510 is specifically configured to send a bearer setup request to the core network device according to the connection setup request received by the receiving unit 520.
  • the sending unit 510 is specifically configured to send a non-access stratum message to the core network device, where the non-access stratum message receives the bearer setup request.
  • the bearer setup request carries the terminal device identifier of the remote terminal device; correspondingly, the EPS bearer is established by the core network device by sending application layer protocol signaling to the access network device, where the application is The layer protocol signaling carries the terminal device identifier of the remote terminal device.
  • the sending unit 510 is specifically configured to send an RRC message to the access network device, where the RRC message carries the bearer setup request, so that the access network device sends the core network device to request to establish according to the RRC message.
  • Application layer protocol signaling carried by the remote terminal device.
  • the bearer setup request is further used to request to establish a PDN connection of the remote terminal device.
  • the reconfiguration message also carries configuration information of the PDN connection established for the remote terminal device; the sending unit 510 is further configured to send configuration information of the PDN connection to the remote terminal device.
  • the relay terminal device 500 may correspond to the relay terminal device in the foregoing method embodiment, and may be used to perform various steps and/or processes corresponding to the relay terminal device in the foregoing method embodiment. For the sake of brevity, we will not repeat them here.
  • FIG. 8 shows an apparatus 600 for relay transmission provided by an embodiment of the present invention. As shown in FIG. 8, the apparatus 600 includes:
  • the receiving unit 610 is configured to receive a bearer setup request sent by the relay terminal device, where the bearer setup request is used to request to establish an EPS bearer of the remote terminal device;
  • the processing unit 620 is configured to establish an EPS bearer of the remote terminal device according to the bearer setup request received by the receiving unit 610, where the EPS bearer includes cellular data transmission between the access network device and the relay terminal device. a channel and a D2D data transmission channel between the relay terminal device and the remote terminal device.
  • the bearer setup request carries the terminal device identifier of the remote terminal device.
  • the receiving unit 610 is specifically configured to receive a non-access stratum message sent by the relay terminal device, where the non-access stratum message receives the bearer setup request;
  • the apparatus 600 further includes: a sending unit, where the processing unit 620 is configured to send, by using the sending unit, application layer protocol signaling to the access network device, where the application layer protocol signaling carries the remote terminal device Terminal device identification.
  • the receiving unit 610 is specifically configured to receive the application layer protocol signaling sent by the access network device, where the application layer protocol signaling is sent by the access network device according to the RRC message sent by the relay terminal device,
  • the RRC message carries the bearer setup request.
  • the apparatus 600 may correspond to the core network device in the foregoing method embodiment, and may be used to perform various steps and/or processes corresponding to the core network device in the foregoing method embodiment. For the sake of brevity, it will not be repeated here.
  • FIG. 9 shows another apparatus 700 for relay transmission provided by an embodiment of the present invention. As shown in FIG. 9, the apparatus 700 includes:
  • the receiving unit 710 is configured to receive a bearer setup request, where the bearer setup request is used to request to establish an EPS bearer of the remote terminal device.
  • the processing unit 720 is configured to establish, according to the bearer setup request received by the receiving unit 710, An EPS bearer of the remote terminal device, where the EPS bearer includes a cellular data transmission channel between the access network device and the relay terminal device, and a D2D data transmission channel between the relay terminal device and the remote terminal device ;
  • the sending unit 730 is configured to send a reconfiguration message to the relay terminal device, where the reconfiguration message carries the configuration information of the EPS bearer established by the processing unit 720.
  • the configuration information of the EPS bearer includes configuration information of a cellular communication interface between the relay terminal device and the access network device, and a D2D communication interface between the relay terminal device and the remote terminal device. Configuration information.
  • the configuration information of the cellular communication interface is specifically the first configuration information of the physical layer, and the configuration information of the D2D communication interface is specifically the second configuration information of the physical layer;
  • the configuration information of the cellular communication interface is specifically the first configuration information of the physical layer and the first configuration information of the layer 2, and the configuration information of the D2D communication interface is specifically the second configuration information of the physical layer and the second configuration information of the layer 2 At least one of them.
  • the first configuration information of the physical layer includes at least one of the following information: information about the first transmission resource for relay transmission on the cellular communication interface, relaying the specific RNTI, and the amount of data transmitted by the relay.
  • information about the first transmission resource for relay transmission on the cellular communication interface includes at least one of the following information: information about the first transmission resource for relay transmission on the cellular communication interface, relaying the specific RNTI, and the amount of data transmitted by the relay.
  • the relay specific RNTI is used by the access network device pair to schedule the remote terminal device
  • the physical downlink control channel of the downlink data transmission is scrambled.
  • the second configuration information of the physical layer includes: information about the second transmission resource used for relay transmission on the D2D communication interface.
  • the first configuration information of the layer 2 includes at least one of the following information: a relay specific LCID and a layer two identifier allocated to the remote terminal device, where the relay specific LCID is used to identify the relay transmission.
  • the second configuration information of the layer 2 includes: a layer 2 identifier allocated to the remote terminal device.
  • the configuration information of the EPS bearer further includes configuration information of a user facing layer between the access network device and the remote terminal device.
  • the receiving unit 710 is specifically configured to receive an RRC message sent by the relay terminal device, where the RRC message carries the bearer setup request;
  • the processing unit 720 is specifically configured to send, according to the RRC message, an application layer protocol message for requesting to establish a bearer of the remote terminal device to the core network device by using the sending unit 730. make.
  • the receiving unit 710 is specifically configured to receive application layer protocol signaling sent by the core network device, where the application layer protocol signaling carries the bearer setup request.
  • the bearer setup request carries the terminal device identifier of the remote terminal device.
  • the bearer setup request is further used to request to establish a PDN connection of the remote terminal device.
  • the processing unit 720 is further configured to establish a PDN connection of the remote terminal device according to the bearer setup request.
  • the sending unit 730 is further configured to send configuration information of the PDN connection to the relay terminal device.
  • the apparatus 700 may correspond to the access network device in the foregoing method embodiment, and may be used to perform various steps and/or processes corresponding to the access network device in the foregoing method embodiment. For the sake of brevity, it will not be repeated here.
  • unit herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (eg, a shared processor, a proprietary processor, or a group). Processors, etc.) and memory, merge logic, and/or other suitable components that support the described functionality.
  • ASIC application specific integrated circuit
  • FIG. 10 shows a relay terminal device 800 provided by an embodiment of the present invention.
  • the relay terminal device 800 includes:
  • the transmitter 810 is configured to send a bearer setup request to the core network device, where the bearer setup request is used to request to establish an EPS bearer of the remote terminal device.
  • the receiver 820 is configured to receive a reconfiguration message sent by the access network device, where the reconfiguration message carries configuration information of an EPS bearer established by the remote terminal device, where the EPS bearer includes the access network device and the middle A cellular data transmission channel between the terminal devices and a D2D data transmission channel between the relay terminal device and the remote terminal device.
  • the bearer setup request carries the terminal device identifier of the remote terminal device.
  • the configuration information of the EPS bearer includes configuration information of a cellular communication interface between the relay terminal device and the access network device, and a D2D communication interface between the relay terminal device and the remote terminal device. Configuration information.
  • the configuration information of the cellular communication interface is specifically the first configuration information of the physical layer, and the configuration information of the D2D communication interface is specifically the second configuration information of the physical layer;
  • the configuration information of the cellular communication interface is specifically the first configuration information of the physical layer and the second layer
  • the configuration information of the D2D communication interface is specifically at least one of the second configuration information of the physical layer and the second configuration information of the layer 2.
  • the first configuration information of the physical layer includes at least one of the following information: information about the first transmission resource for relay transmission on the cellular communication interface, relaying the specific RNTI, and the amount of data transmitted by the relay.
  • information about the first transmission resource for relay transmission on the cellular communication interface includes at least one of the following information: information about the first transmission resource for relay transmission on the cellular communication interface, relaying the specific RNTI, and the amount of data transmitted by the relay.
  • the relay specific RNTI is used by the access network device pair to schedule the remote terminal device
  • the physical downlink control channel of the downlink data transmission is scrambled.
  • the second configuration information of the physical layer includes: information about the second transmission resource used for relay transmission on the D2D communication interface.
  • the first configuration information of the layer 2 includes at least one of the following information: a relay specific LCID and a layer two identifier allocated to the remote terminal device, where the relay specific LCID is used to identify the relay transmission.
  • the second configuration information of the layer 2 includes: a layer 2 identifier allocated to the remote terminal device.
  • the configuration information of the EPS bearer further includes configuration information of a user facing layer between the access network device and the remote terminal device.
  • the transmitter 810 is further configured to send, to the remote terminal device, configuration information of a user facing layer between the access network device and the remote terminal device.
  • the receiver 820 is further configured to: before the transmitter 810 sends a bearer setup request to the core network device, receive a connection establishment request of the remote terminal device, where the connection setup request is used to request to establish the relay terminal device. a D2D communication link with the remote terminal device;
  • the transmitter 810 is specifically configured to send a bearer setup request to the core network device according to the connection setup request received by the receiver 820.
  • the transmitter 810 is specifically configured to send a non-access stratum message to the core network device, where the non-access stratum message receives the bearer setup request.
  • the bearer setup request carries the terminal device identifier of the remote terminal device; correspondingly, the EPS bearer is established by the core network device by sending application layer protocol signaling to the access network device, where the application is The layer protocol signaling carries the terminal device identifier of the remote terminal device.
  • the transmitter 810 is specifically configured to send an RRC message to the access network device, where the RRC message carries the bearer setup request, so that the access network device sends the core network device to request to establish according to the RRC message.
  • Application layer protocol signaling carried by the remote terminal device.
  • the bearer setup request is further used to request to establish a PDN connection of the remote terminal device.
  • the reconfiguration message also carries configuration information of the PDN connection established for the remote terminal device; the transmitter 810 is further configured to send configuration information of the PDN connection to the remote terminal device.
  • the relay terminal device 800 may correspond to the relay terminal device in the foregoing method embodiment, and may be used to perform various steps and/or processes corresponding to the relay terminal device in the foregoing method embodiment.
  • apparatus 800 can also include a memory and a processor, which can include read only memory and random access memory, and provide instructions and data to the processor.
  • a portion of the memory may also include a non-volatile random access memory.
  • the memory can also store information of the device type.
  • the processor can be operative to execute instructions stored in the memory, and when the processor executes instructions stored in the memory, the processor is operative to perform various steps and/or processes of the method embodiments described above.
  • FIG. 11 shows an apparatus 900 for relay transmission provided by an embodiment of the present invention.
  • the device 900 includes:
  • the receiver 910 is configured to receive a bearer setup request sent by the relay terminal device, where the bearer setup request is used to request to establish an EPS bearer of the remote terminal device.
  • the processor 920 is configured to establish an EPS bearer of the remote terminal device according to the bearer setup request received by the receiver 910, where the EPS bearer includes a cellular data transmission between the access network device and the relay terminal device. a channel and a D2D data transmission channel between the relay terminal device and the remote terminal device.
  • the bearer setup request carries the terminal device identifier of the remote terminal device.
  • the receiver 910 is specifically configured to receive a non-access stratum message sent by the relay terminal device, where the non-access stratum message receives the bearer setup request;
  • the apparatus 900 further includes: a transmitter, where the processor 920 is configured to send, by using the transmitter, application layer protocol signaling to the access network device, where the application layer protocol signaling carries the remote terminal device Terminal device identification.
  • the receiver 910 is specifically configured to receive the application layer protocol signaling sent by the access network device, where the application layer protocol signaling is sent by the access network device according to the RRC message sent by the relay terminal device,
  • the RRC message carries the bearer setup request.
  • the apparatus 900 may correspond to the core network device in the foregoing method embodiment, and may be used to perform various steps and/or processes corresponding to the core network device in the foregoing method embodiment.
  • the device 900 may further include a memory, which may include read only storage And random access memory and provide instructions and data to the processor.
  • a portion of the memory may also include a non-volatile random access memory.
  • the memory can also store information of the device type.
  • the processor can be operative to execute instructions stored in the memory, and when the processor executes instructions stored in the memory, the processor is operative to perform various steps and/or processes of the method embodiments described above.
  • FIG. 12 shows another apparatus 1000 for relay transmission provided by an embodiment of the present invention. As shown in FIG. 12, the apparatus 1000 includes:
  • the receiver 1010 is configured to receive a bearer setup request, where the bearer setup request is used to request to establish an EPS bearer of the remote terminal device.
  • the processor 1020 is configured to establish an EPS bearer of the remote terminal device according to the bearer setup request received by the receiver 1010, where the EPS bearer includes a cellular data transmission channel between the access network device and the relay terminal device. And a D2D data transmission channel between the relay terminal device and the remote terminal device;
  • the sender 1030 is configured to send a reconfiguration message to the relay terminal device, where the reconfiguration message carries configuration information of the EPS bearer established by the processor 1020.
  • the configuration information of the EPS bearer includes configuration information of a cellular communication interface between the relay terminal device and the access network device, and a D2D communication interface between the relay terminal device and the remote terminal device. Configuration information.
  • the configuration information of the cellular communication interface is specifically the first configuration information of the physical layer, and the configuration information of the D2D communication interface is specifically the second configuration information of the physical layer;
  • the configuration information of the cellular communication interface is specifically the first configuration information of the physical layer and the first configuration information of the layer 2, and the configuration information of the D2D communication interface is specifically the second configuration information of the physical layer and the second configuration information of the layer 2 At least one of them.
  • the first configuration information of the physical layer includes at least one of the following information: information about the first transmission resource for relay transmission on the cellular communication interface, relaying the specific RNTI, and the amount of data transmitted by the relay.
  • information about the first transmission resource for relay transmission on the cellular communication interface includes at least one of the following information: information about the first transmission resource for relay transmission on the cellular communication interface, relaying the specific RNTI, and the amount of data transmitted by the relay.
  • the relay specific RNTI is used by the access network device pair to schedule the remote terminal device
  • the physical downlink control channel of the downlink data transmission is scrambled.
  • the second configuration information of the physical layer includes: information about the second transmission resource used for relay transmission on the D2D communication interface.
  • the first configuration information of the layer 2 includes at least one of the following information: a relaying a specific LCID and a layer two identifier allocated to the remote terminal device, where the relay specific LCID is used by For identification relay transmission.
  • the second configuration information of the layer 2 includes: a layer 2 identifier allocated to the remote terminal device.
  • the configuration information of the EPS bearer further includes configuration information of a user facing layer between the access network device and the remote terminal device.
  • the receiver 1010 is specifically configured to receive an RRC message sent by the relay terminal device, where the RRC message carries the bearer setup request;
  • the processor 1020 is specifically configured to send, according to the RRC message, the application layer protocol signaling for requesting to establish a bearer of the remote terminal device to the core network device by using the transmitter 1030.
  • the receiver 1010 is specifically configured to receive application layer protocol signaling sent by the core network device, where the application layer protocol signaling carries the bearer setup request.
  • the bearer setup request carries the terminal device identifier of the remote terminal device.
  • the bearer setup request is further used to request to establish a PDN connection of the remote terminal device.
  • the processor 1020 is further configured to establish a PDN connection of the remote terminal device according to the bearer setup request.
  • the transmitter 1030 is further configured to send configuration information of the PDN connection to the relay terminal device.
  • the apparatus 1000 may correspond to the access network device in the foregoing method embodiment, and may be used to perform various steps and/or processes corresponding to the access network device in the foregoing method embodiment.
  • apparatus 1000 can also include a memory, which can include read only memory and random access memory, and provides instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory.
  • the memory can also store information of the device type.
  • the processor can be operative to execute instructions stored in the memory, and when the processor executes instructions stored in the memory, the processor is operative to perform various steps and/or processes of the method embodiments described above.
  • the processor may be a central processing unit (CPU), and the processor may also be other general purpose processors, digital signal processors (DSPs), and application specific integrated circuits (ASICs). ), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as hardware processor execution, or combined with hardware and software modules in the processor.
  • the execution is complete.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in a memory, and the processor executes instructions in the memory, in combination with hardware to perform the steps of the above method. To avoid repetition, it will not be described in detail here.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • There are a number of instructions for causing a computer device (which may be a personal computer, server, or access network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

Abstract

本发明公开了一种用于中继传输的方法和装置以及中继终端设备，能够降低中继传输的处理复杂度。该方法包括：中继终端设备向核心网设备发送承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载；该中继终端设备接收接入网设备发送的重配置消息，该重配置消息携带为该远端终端设备建立的EPS承载的配置信息，其中，该EPS承载包括该接入网设备与该中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的D2D数据传输通道。

Description

用于中继传输的方法和装置以及中继终端设备 技术领域
本发明实施例涉及通信领域，并且更具体地，涉及用于中继传输的方法和装置以及中继终端设备。
背景技术
设备到设备(Device-to-Device，D2D)技术是指邻近的终端设备可以在近距离范围内通过直连链路的方式进行数据传输，而不需要通过接入网设备进行转发。D2D通信可以与蜂窝系统共享授权频带资源，形成统一的混合蜂窝-D2D网络。在该混合网络中，部分终端设备可以仍工作于蜂窝通信模式，即通过接入网设备与其它终端设备通信，而部分终端设备可以工作于D2D通信，即通过与其它终端设备之间的直通链路与其它终端设备进行数据的直接传输。
此外，可以通过D2D中继辅助接入网设备和终端设备之间的数据传输，此时，D2D中继与D2D终端之间采用D2D通信模式，而D2D中继和接入网设备之间使用蜂窝通信模式。D2D中继使用半双工的方式接收和转发数据，并且在接收和转发的过程中进行模式转换。
现有技术中，在D2D中继与蜂窝网络之间建立演进分组系统(Evovled Packet System，EPS)承载，D2D终端对于蜂窝网络不可见。此时，D2D中继在中继D2D终端与蜂窝网络之间传输的数据时，需要进行互联网协议(Internet Protocol，IP)网络(NET)穿越，处理过程较为复杂。
发明内容
本发明实施例提供一种用于中继传输的方法和装置以及中继终端设备，能够降低中继传输的处理复杂度。
第一方面，提供了一种用于中继传输的方法，包括：中继终端设备向核心网设备发送承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载；该中继终端设备接收接入网设备发送的重配置消息，该重配置消息携带为该远端终端设备建立的EPS承载的配置信息，其中，该EPS承载包括该接入网设备与该中继终端设备之间的蜂窝数据传输通道以及该中继 终端设备与该远端终端设备之间的D2D数据传输通道。
本发明实施例提供的用于中继传输的方法，通过中继终端设备向核心网设备发送承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载，该核心网设备和接入网设备根据该承载建立请求，建立该远端终端设备的EPS承载，其中，该EPS承载包括该接入网设备与该中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的设备到设备D2D数据传输通道。这样，该中继终端设备可以采用该EPS承载中继该远端终端设备和该接入网设备之间的数据传输，有利于该中继终端设备采用不同的方式进行中继，无需进行NET穿越，从而降低中继传输的数据处理复杂度。
可选地，该承载建立请求携带该远端终端设备的终端设备标识。
在第一方面的第一种可能的实现方式中，该EPS承载的配置信息包括该中继终端设备与该接入网设备之间的蜂窝通信接口的配置信息和该中继终端设备与该远端终端设备之间的D2D通信接口的配置信息；该蜂窝通信接口的配置信息具体为物理层的第一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息；或者该蜂窝通信接口的配置信息具体为物理层的第一配置信息和层二的第一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息和层二的第二配置信息中的至少一种。
可选地，该中继终端设备与该接入网设备之间的蜂窝通信接口的配置信息可以具体为该接入网设备与该中继终端设备之间的用户面对等层的配置信息，该中继终端设备与该远端终端设备之间的D2D通信接口的配置信息可以具体为该中继终端设备与该远端终端设备之间的用户面对等层的配置信息。
结合上述可能的实现方式，在第一方面的第二种可能的实现方式中，该物理层的第一配置信息包括下列信息中的至少一种：该蜂窝通信接口上用于中继传输的第一传输资源的信息、中继特定RNTI、中继传输的数据量区间与PUCCH资源之间的对应关系以及中继传输的数据量区间与前导码之间的对应关系，其中，该中继特定RNTI用于该接入网设备对用于调度该远端终端设备的下行数据传输的物理下行控制信道进行加扰；该物理层的第二配置信息包括：该D2D通信接口上用于中继传输的第二传输资源的信息。
结合上述可能的实现方式，在第一方面的第三种可能的实现方式中，该 层二的第一配置信息包括下列信息中的至少一种：中继特定LCID以及为该远端终端设备分配的层二标识，其中，该中继特定LCID用于标识中继传输；和/或该层二的第二配置信息包括：为该远端终端设备分配的层二标识。
结合上述可能的实现方式，在第一方面的第四种可能的实现方式中，该EPS承载的配置信息还包括该接入网设备与该远端终端设备之间的用户面对等层的配置信息；该方法还包括：向该远端终端设备发送该接入网设备与该远端终端设备之间的用户面对等层的配置信息。
结合上述可能的实现方式，在第一方面的第五种可能的实现方式中，在该中继终端设备向核心网设备发送承载建立请求之前，该方法还包括：该中继终端设备接收该远端终端设备的连接建立请求，该连接建立请求用于请求建立该中继终端设备与该远端终端设备之间的D2D通信链路；该中继终端设备向核心网设备发送承载建立请求，包括：该中继终端设备根据该连接建立请求，向核心网设备发送承载建立请求。
结合上述可能的实现方式，在第一方面的第六种可能的实现方式中，该中继终端设备向核心网设备发送承载建立请求，包括：该中继终端设备向核心网设备发送非接入层消息，该非接入层消息接待该承载建立请求。
结合上述可能的实现方式，在第一方面的第七种可能的实现方式中，该承载建立请求携带该远端终端设备的终端设备标识；该EPS承载是该核心网设备通过向该接入网设备发送应用层协议信令建立的，其中，该应用层协议信令携带该远端终端设备的终端设备标识。
可选地，该核心网设备可以为MME，此时，该MME可以通过与接入网设备之间的S1接口向该接入网设备发送该应用层协议信令。
结合上述可能的实现方式，在第一方面的第八种可能的实现方式中，该中继终端设备向核心网设备发送承载建立请求，包括：该中继终端设备向该接入网设备发送RRC消息，该RRC消息携带该承载建立请求，以便于该接入网设备根据该RRC消息向核心网设备发送用于请求建立该远端终端设备的承载的应用层协议信令。
可选地，该接入网设备向该核心网设备发送的应用层协议信令可以携带该承载建立请求，以便于该核心网设备根据该承载建立请求中携带的该远端终端设备的标识信息为该远端终端设备建立EPS承载。
结合上述可能的实现方式，在第一方面的第九种可能的实现方式中，该 承载建立请求还用于请求建立该远端终端设备的PDN连接；该重配置消息还携带为该远端终端设备建立的PDN连接的配置信息；该方法还包括：该中继终端设备向该远端终端设备发送该PDN连接的配置信息。
第二方面，提供了另一种用于中继传输的方法，包括：核心网设备接收中继终端设备发送的承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载；该核心网设备根据该承载建立请求，建立该远端终端设备的EPS承载，其中，该EPS承载包括接入网设备与该中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的D2D数据传输通道。
在第二方面的第一种可能的实现方式中，该承载建立请求携带该远端终端设备的终端设备标识。
结合上述可能的实现方式，在第二方面的第二种可能的实现方式中，该核心网设备接收中继终端设备发送的承载建立请求，包括：核心网设备接收该中继终端设备发送的非接入层消息，该非接入层消息接待该承载建立请求；该核心网设备根据该承载建立请求，建立该远端终端设备的EPS承载，包括：该核心网设备通过向该接入网设备发送应用层协议信令，其中，该应用层协议信令携带该远端终端设备的终端设备标识。
可选地，该应用层协议信令携带该承载建立请求。
结合上述可能的实现方式，在第二方面的第三种可能的实现方式中，该核心网设备接收中继终端设备发送的承载建立请求，包括：该核心网设备接收该接入网设备发送的应用层协议信令，该应用层协议信令是该接入网设备根据该中继终端设备发送的RRC消息发送的，该RRC消息携带该承载建立请求。
第三方面，提供了另一种用于中继传输的方法，包括：接入网设备接收承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载；该接入网设备根据该承载建立请求，建立该远端终端设备的EPS承载，其中，该EPS承载包括接入网设备与中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的D2D数据传输通道；该接入网设备向该中继终端设备发送重配置消息，该重配置消息携带该EPS承载的配置信息。
可选地，该承载建立请求携带该远端终端设备的终端设备标识。
在第三方面的第一种可能的实现方式中，该EPS承载的配置信息包括该中继终端设备与该接入网设备之间的蜂窝通信接口的配置信息和该中继终端设备与该远端终端设备之间的D2D通信接口的配置信息；该蜂窝通信接口的配置信息具体为物理层的第一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息；或者该蜂窝通信接口的配置信息具体为物理层的第一配置信息和层二的第一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息和层二的第二配置信息中的至少一种。
结合上述可能的实现方式，在第三方面的第二种可能的实现方式中，该物理层的第一配置信息包括下列信息中的至少一种：该蜂窝通信接口上用于中继传输的第一传输资源的信息、中继特定RNTI、中继传输的数据量区间与PUCCH资源之间的对应关系以及中继传输的数据量区间与前导码之间的对应关系，其中，该中继特定RNTI用于该接入网设备对用于调度该远端终端设备的下行数据传输的物理下行控制信道进行加扰；该物理层的第二配置信息包括：该D2D通信接口上用于中继传输的第二传输资源的信息。
结合上述可能的实现方式，在第三方面的第三种可能的实现方式中，该层二的第一配置信息包括下列信息中的至少一种：中继特定LCID以及为该远端终端设备分配的层二标识，其中，该中继特定LCID用于标识中继传输；和/或该层二的第二配置信息包括：为该远端终端设备分配的层二标识。
结合上述可能的实现方式，在第三方面的第四种可能的实现方式中，该EPS承载的配置信息还包括该接入网设备与该远端终端设备之间的用户面对等层的配置信息。
结合上述可能的实现方式，在第三方面的第五种可能的实现方式中，该接入网设备接收承载建立请求，包括：该接入网设备接收该中继终端设备发送的RRC消息，该RRC消息携带该承载建立请求；该接入网设备根据该承载建立请求，建立该远端终端设备的EPS承载，包括：该接入网设备根据该RRC消息，向核心网设备发送用于请求建立该远端终端设备的承载的应用层协议信令。
结合上述可能的实现方式，在第三方面的第六种可能的实现方式中，该接入网设备接收承载建立请求，包括：该接入网设备接收核心网设备发送的应用层协议信令，该应用层协议信令携带该承载建立请求。
结合上述可能的实现方式，在第三方面的第七种可能的实现方式中，该 承载建立请求还用于请求建立该远端终端设备的PDN连接；该方法还包括：该接入网设备根据该承载建立请求，建立该远端终端设备的PDN连接；该接入网设备向该中继终端设备发送该PDN连接的配置信息。
第四方面，提供了一种用于中继传输的装置，用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地，该装置包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的单元。
第五方面，提供了另一种用于中继传输的装置，用于执行上述第二方面或第二方面的任意可能的实现方式中的方法。具体地，该装置包括用于执行上述第二方面或第二方面的任意可能的实现方式中的方法的单元。
第六方面，提供了另一种用于中继传输的装置，用于执行上述第三方面或第三方面的任意可能的实现方式中的方法。具体地，该装置包括用于执行上述第三方面或第三方面的任意可能的实现方式中的方法的单元。
第七方面，提供了另一种用于中继传输的装置，包括：存储单元和处理器，该存储单元用于存储指令，该处理器用于执行该存储器存储的指令，并且当该处理器执行该存储器存储的指令时，该执行使得该处理器执行第一方面或第一方面的任意可能的实现方式中的方法。
第八方面，提供了另一种用于中继传输的装置，包括：存储单元和处理器，该存储单元用于存储指令，该处理器用于执行该存储器存储的指令，并且当该处理器执行该存储器存储的指令时，该执行使得该处理器执行第二方面或第二方面的任意可能的实现方式中的方法。
第九方面，提供了另一种用于中继传输的装置，包括：存储单元和处理器，该存储单元用于存储指令，该处理器用于执行该存储器存储的指令，并且当该处理器执行该存储器存储的指令时，该执行使得该处理器执行第三方面或第三方面的任意可能的实现方式中的方法。
第十方面，提供了一种计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行第一方面或第一方面的任意可能的实现方式中的方法的指令。
第十一方面，提供了另一种计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行第二方面或第二方面的任意可能的实现方式中的方法的指令。
第十二方面，提供了另一种计算机可读介质，用于存储计算机程序，该 计算机程序包括用于执行第三方面或第三方面的任意可能的实现方式中的方法的指令。
本发明实施例提供的中继传输的方法，通过中继终端设备通过接入网设备发送承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载，该接入网设备可以根据该承载建立请求，建立该远端终端设备的EPS承载，其中，该EPS承载可以包括该核心网设备与接入网设备之间的数据传输隧道以及接入网设备与中继终端设备之间的无线承载。这样，该中继终端设备可以采用该EPS承载中继该远端终端设备和核心网设备之间的数据，无需进行NET穿越，从而降低中继传输的数据处理复杂度。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例应用的无线通信系统的示意性流程图。
图2是本发明实施例提供的用于中继传输的方法的示意性流程图。
图3是本发明实施例的各个设备的用于中继通信的用户面协议栈示例的示意图。
图4是本发明实施例的各个设备的用于中继通信的另一用户面协议栈示例的示意图。
图5是本发明实施例提供的另一用于中继传输的方法的示意性流程图。
图6是本发明实施例提供的另一用于中继传输的方法的示意性流程图。
图7是本发明实施例提供的中继终端设备的示意性框图。
图8是本发明实施例提供的用于中继传输的装置的示意性框图。
图9是本发明实施例提供的另一用于中继传输的装置的示意性框图。
图10是本发明实施例提供的另一中继终端设备的示意性框图。
图11是本发明实施例提供的另一用于中继传输的装置的示意性框图。
图12是本发明实施例提供的另一用于中继传输的装置的示意性框图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应属于本发明保护的范围。
应理解，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
图1是本发明实施例的应用的无线通信系统100的示意图，该无线通信系统100包括可以包括至少一个接入网设备110。接入网设备100可以是与终端设备通信的设备。每个接入网设备100可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的终端设备进行通信。该接入网设备100可以是GSM系统或码分多址(Code Division Multiple Access，CDMA)系统中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器，或者该接入网设备可以为中继站、接入点、车载设备、可穿戴设备、未来5G网络中的核心网设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的接入网设备等。
该无线通信系统100还包括位于接入网设备110覆盖范围内的多个终端设备120。该终端设备120可以是移动的或固定的。该终端设备120可以指接入终端、用户设备(User Equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、未来5G网络中的终端设备或者未来演进的PLMN中的 终端设备等。
图1示例性地示出了一个接入网设备和六个终端设备，可选地，该无线通信系统100可以包括多个接入网设备并且每个接入网设备的覆盖范围内可以包括其它数量的终端设备，本发明实施例对此不做限定。此外，该无线通信系统100还可以包括移动管理实体(Mobile Management Entity，MME)、服务网关(Serving Gateway，S-GW)、分组数据网络网关(Packet Data Network Gateway，P-GW)等其他网络实体，但本发明实施例不限于此。
具体地，终端设备120可以以蜂窝通信模式或D2D通信模式进行通信，其中，在蜂窝通信模式中，终端设备可以通过接入网设备与其它终端设备通信；在D2D通信模式中，终端设备可以通过D2D链路直接与其它终端设备通信。
在图1示出的多个终端设备120中，包括蜂窝终端设备、D2D终端设备和中继终端设备，其中，蜂窝终端设备采用蜂窝通信技术与接入网设备110进行通信。D2D终端设备通过中继终端设备实现与接入网设备之间的数据传输，其中，中继终端设备与D2D终端设备之间具有PC5接口，采用D2D通信技术进行通信，其中，该D2D通信技术可以具体为LTE中的旁路(SideLink，SL)技术，也可以为WLAN中的WIFI或蓝牙等技术，或者为其它D2D通信技术，本发明实施例对此不做限定。中继终端设备与接入网设备之间具有Uu接口，采用蜂窝通信技术进行通信。
图2示意性地示出了本发明实施例提供的用于中继传输的方法200。该方法200可以应用于图1所示的无线通信系统，但本发明实施例对此不做限定。
S210，中继终端设备向核心网设备发送承载建立请求，该承载建立请求用于请求建立该远端终端设备的EPS承载。
该承载建立请求用于请求建立该远端终端设备的EPS承载。例如，请求建立该远端终端设备的默认EPS承载，或者请求建立该远端终端设备的专用EPS承载，本发明实施例对此不做限定。
可选地，如果还未建立该远端终端设备的分组数据网络(Packet Data Network，PDN)连接，则该承载建立请求还可以用于请求建立该远端终端设备的PDN连接，但本发明实施例不限于此。
可选地，该承载建立请求可以携带该远端终端设备的信息，例如该远端 终端设备的终端设备标识，可选地，如果已经建立了该远端终端设备的PDN连接，则该远端终端设备的信息可以包括该远端终端设备的IP地址，但本发明实施例不限于此。
可选地，该中继终端设备可以在与远端终端设备建立了D2D通信链路(也可以称为PC5连接)之后，发送该承载建立请求。可选地，该中继终端设备也可以在接收到该远端终端设备的连接建立请求时，根据该连接建立请求发送该承载建立请求，其中，该连接建立请求用于请求建立该中继终端设备与该远端终端设备之间的D2D通信链路，例如，该连接建立请求可以具体为直接通信请求，用于请求建立该中继终端设备与该远端终端设备之间的PC5链路，但本发明实施例不限于此。
可选地，该核心网设备可以具体为移动性管理实体(Mobility Management Entity，MME)或其它装置，为了便于描述，以下将该核心网设备具体为MME为例进行描述，但本发明实施例不限于此。
可选地，该中继终端设备可以通过向接入网设备发送无线资源控制(Radio Resource Control，RRC)消息来向该核心网设备发送该承载建立请求。具体地，该中继终端设备可以向接入网设备发送RRC消息，该RRC消息携带该承载建立请求。该接入网设备在接收到该RRC消息之后，可以向核心网设备(例如发送应用层协议信令，以请求核心网设备建立该远端终端设备的EPS承载，但本发明实施例不限于此。
可选地，该中继终端设备也可以向核心网设备发送非接入层(Non Access Stratum，NAS)消息，其中，该NAS消息携带该承载建立请求，但本发明实施例不限于此。
S220，核心网设备在接收到该承载建立请求之后，可以根据该承载建立请求，与接入网设备一起建立该远端终端设备的EPS承载，其中，该EPS承载包括该接入网设备与该中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的设备到设备D2D数据传输通道。
可选地，该EPS承载还可以包括该核心网设备和接入网设备之间的数据传输通道以及该核心网设备与P-GW之间的数据传输通道，其中，可选地，该核心网设备和接入网设备之间的数据传输通道以及该核心网设备与P-GW之间的数据传输通道可以统称为GPRS隧道协议(GPRS Tunnelling Protocol，GTP)隧道，但本发明实施例不限于此。
可选地，如果该EPS承载为该远端终端设备的默认承载，则在建立该EPS承载之前，该核心网设备还可以对该远端终端设备进行鉴权，例如身份鉴权，安全性鉴权，等等，但本发明实施例不限于此。
可选地，该核心网设备可以向P-GW发送该远端终端设备的信息，以便于该P-GW根据该远端终端设备的信息，建立该远端终端设备的GTP隧道。可选地，该核心网设备还可以接收P-GW发送的该GTP隧道的配置信息，例如为该远端终端设备分配的隧道端点标识符(Tunnel Endpoint Identifier，TEID)等等，本发明实施例对此不做限定。
可选地，该核心网设备还可以向该接入网设备发送应用层协议信令，其中，该应用层协议信令可以携带该远端终端设备的终端设备标识，以便于该接入网设备根据该应用层协议信令建立该远端终端设备的无线承载，其中，该远端终端设备的无线承载可以包括该接入网设备与该中继终端设备之间的数据传输通道和该中继终端设备与该远端终端设备之间的数据传输通道。可选地，该应用层协议信令可以具体为初始上下文建立请求(INITIAL CONTEXT SETUP REQUEST)或无线接入承载(Radio Access Bearer，RAB)建立请求，等等，本发明实施例对此不做限定。
S230，接入网设备向中继终端设备发送重配置消息，该重配置消息携带为该远端终端设备建立的EPS承载的配置信息。
可选地，该重配置消息可以具体为RRC连接重配置消息，该EPS承载的配置信息可以包括该接入网设备为该远端终端设备建立的无线承载的配置信息。例如，该无线承载的配置信息可以包括下列信息中的至少一种：该接入网设备与该中继终端设备之间的用户面对等层的配置信息、该中继终端设备与该远端终端设备之间的用户面对等层的配置信息和该接入网设备与该远端终端设备之间的用户面对等层的配置信息，但本发明实施例不限于此。
可选地，在本发明实施例中，该中继终端设备可以通过不同于IP层之外的其它层中继该远端终端设备与该网络设备之间的数据传输。例如，该中继终端设备可以采用层一中继或层二中继的方式。其中，层一中继可以具体为物理层中继，层二中继可以具体为媒体访问控制(Media Access Control，MAC)层中继、无线链路控制(Radio Link Control，RLC)层中继或分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层中继，但本发明 实施例对该中继终端设备进行中继传输的方式不作限定。
可选地，该中继终端设备可以采用层一中继的方式。此时，该中继终端设备的用户面协议栈可以仅包括物理层，例如如图3所示的用户面协议栈示例中，该中继终端设备的物理层分别与该远端终端设备的物理层和该网络设备的物理层为对等层，该网络设备和该远端终端设备的高层(例如层二、层三等等)为对等层，但本发明实施例不限于此。此时，可选地，该网络设备或远端终端设备需要向对方发送数据时，可以将数据封装为MAC PDU，其中，该MAC PDU中携带远端终端设备的标识信息；通过物理层将该MAC PDU进行处理，生成物理层数据帧，并通过物理层向中继终端设备发送该物理层数据帧。该中继终端设备在接收到远端终端设备或网络设备发送的物理层数据帧时，可以在物理层对接收到该物理层数据帧中携带的数据进行处理和转发，而不识别该物理层数据帧所对应的远端终端设备，相应地，可以由接收到该中继终端设备通过物理层发送的数据的网络设备或远端终端设备在高层(例如层二或层三)识别该数据所对应的远端终端设备，但本发明实施例不限于此。
此时，可选地，该无线承载的配置信息可以包括该接入网设备与该中继终端设备之间的用户面对等层的配置信息，即该中继终端设备与该接入网设备之间的蜂窝通信接口的配置信息。该蜂窝通信接口的配置信息可以包括该接入网设备与该中继终端设备的用于与对方进行中继传输的层一(即物理层)的配置信息，为了便于描述，可以将该配置信息称为物理层的第一配置信息，但本发明实施例不限于此。可选地，该物理层的第一配置信息包括下列信息中的至少一种：用于中继传输的第一传输资源的信息、中继特定无线网络临时标识(Radio Network Temporary Identity，RNTI)、中继传输的数据量区间与物理上行控制信道PUCCH资源之间的对应关系以及中继传输的数据量区间与前导码之间的对应关系。或者，该物理层的第一配置信息还可以包括其它用于进行中继传输的信息，本发明实施例对此不做限定。
具体地，该用于中继传输的第一传输资源可以具体用于该中继终端设备与该接入网设备之间传输中继数据。这样，当该中继终端设备接收到该接入网设备采用该第一传输资源传输的物理层数据帧，或者当该接入网设备接收到该中继终端设备采用该第一传输资源传输的物理层数据帧时，可以根据该物理层数据帧占用的该第一传输资源，确定该物理层数据帧携带中继数据， 但本发明实施例不限于此。
该中继特定RNTI可以用于识别中继数据。具体地，该接入网设备可以采用该中继特定RNTI对用于调度该远端终端设备的下行数据传输的物理下行控制信道(Physical Downlink Control Channel，PDCCH)进行加扰，以使得该中继终端设备可以确定通过该中继特定RNTI寻址接收到的物理层数据帧携带中继数据，但本发明实施例不限于此。
当该中继终端设备需要向网络设备中继转发该远端终端设备的数据时，可选地，该中继终端设备可以向该网络设备请求上行授权。作为一个可选实施例，该中继终端设备可以向该网络设备发送缓存状态报告，该缓存状态报告携带该中继终端设备的缓存数据量的信息，以便于该网络设备可以根据该缓存状态报告，为该中继终端设备分配上行传输资源。
作为另一个可选实施例，该物理层的第一配置信息也可以包括中继传输的数据量区间与物理上行控制信道(Physical Uplink Control Channel，PUCCH)资源之间的对应关系。这样，该中继终端设备可以根据该数据量区间与PUCCH资源之间的对应关系，确定待中继传输的数据量大小对应的PUCCH资源，并且采用该对应的PUCCH资源向该网络设备发送调度请求。此时，该网络设备可以根据该调度请求所占用的PUCCH资源确定该中继终端设备待传输的数据量区间，并据此分配上行传输资源，但本发明实施例不限于此。
作为另一个可选实施例，该物理层的第一配置信息也可以包括中继传输的数据量区间与前导码之间的对应关系。此时，该中继终端设备可以通过向网络设备发送前导码来请求上行授权。具体地，该中继终端设备可以根据该数据量区间与前导码之间的对应关系，确定待中继传输的数据量大小对应的前导码，并且向该网络设备发送该对应的前导码。此时，该网络设备可以根据该对应的前导码确定该中继终端设备待传输的数据量区间，并据此分配上行传输资源，但本发明实施例不限于此。
可选地，该物理层的第一配置信息还可以进一步包括该中继终端设备与该远端终端设备之间的用户面对等层的配置信息，即该中继终端设备与该远端终端设备之间的D2D通信接口的配置信息。该D2D通信接口的配置信息可以包括该中继终端设备与该远端终端设备的用于与对方进行中继传输的层一(即物理层)的配置信息，为了便于描述，可以将该配置信息称为物理层的第二配置信息，但本发明实施例不限于此。可选地，该物理层的第二配 置信息可以包括用于中继传输的第二传输资源的信息，其中，该第二传输资源用于中继终端设备与远端终端设备之间进行中继传输。这样，当该中继终端设备接收到该远端终端设备采用该第二传输资源传输的物理层数据帧，或者当该远端终端设备接收到该中继终端设备采用该第二传输资源传输的物理层数据帧时，可以根据该物理层数据帧占用的该第二传输资源，确定该物理层数据帧携带中继数据，但本发明实施例不限于此。
可选地，该物理层的第二配置信息还可以包括其它信息，本发明实施例对此不做限定。
可选地，该无线承载的配置信息还可以包括该接入网设备与该远端终端设备之间的用户面对等层的配置信息。例如，还包括MAC层的配置信息、RLC层的配置信息和PDCP层的配置信息中的至少一种。此时，该中继终端设备还可以向该远端终端设备发送该接入网设备与该远端终端设备之间的用户面对等层的配置信息。该远端终端设备在接收到上述配置信息之后，可以对MAC层、RLC层和PDCP层中的至少一种进行配置，但本发明实施例不限于此。
可选地，该中继终端设备也可以采用层二中继的方式，例如采用MAC层中继、RLC层中继或PDCP层中继的方式。此时，该中继终端设备的用户面协议栈可以仅包括物理层和层二中的至少一层，例如如图4所示的用户面协议栈示例中，该中继终端设备采用MAC层中继的方式。此时，该中继终端设备的物理层分别与该远端终端设备的物理层和该网络设备的物理层为对等层，该中继终端设备的MAC层分别与网络设备和该远端终端设备的MAC层为对等层，该网络设备和该远端终端设备的RLC层和PDCP层以及更高层均为对等层，但本发明实施例不限于此。此时，可选地，该中继终端设备可以根据该远端终端设备的标识信息识别该远端终端设备，其中，该远端终端设备的标识信息可以包括该远端终端设备的终端设备标识或层二标识。可选地，当该网络设备或远端终端设备需要向对方发送数据时，可以将数据封装为二层PDU，即通过层二和层一的两层封装而生成的PDU，其中，该二层PDU可以携带该远端终端设备的标识信息，或者当该接入网设备向该中继终端设备发送中继数据时，该网络设备可以通过由该远端终端设备的RNTI进行加扰的PDCCH对该二层PDU进行调度。该中继终端设备在接收到远端终端设备或网络设备发送的二层PDU时，可以在层二对该接收到的 二层PDU进行处理，例如在层二根据该远端终端设备的标识信息识别接收到的该二层PDU所对应的远端终端设备，或在层二根据该远端终端设备的标识信息封装向接收端设备发送的二层PDU，等等，但本发明实施例不限于此。
此时，可选地，该接入网设备与该中继终端设备之间的用户面对等层的配置信息可以具体包括该接入网设备与该中继终端设备的用于与对方进行中继传输的层一和层二的配置信息，其中，与上述用户面协议栈相对应地，该层二的配置信息可以包括MAC层的配置信息，或进一步包括RLC层的配置信息，或进一步包括RLC层和PDCP层的配置信息。为了便于理解，可以分别将层一和层二的配置信息称为物理层的第一配置信息和层二的第一配置信息，但本发明实施例不限于此。
可选地，物理层的第一配置信息可以参考上面描述，为了简洁，这里不再赘述。作为另一个可选实施例，该物理层的第一配置信息还可以包括网络设备为该远端终端设备分配的目标前导码。此时，该中继终端设备在需要向该接入网设备中继转发该远端终端设备的数据时，可以采用该目标前导码向该接入网设备发起上行授权请求，并且该接入网设备可以根据该目标前导码确定该上行授权请求所对应的远端终端设备，并为该远端终端设备的数据分配上行传输资源，但本发明实施例不限于此。
作为另一个可选实施例，该物理层的第一配置信息还可以包括网络设备为该远端终端设备分配的RNTI。此时，当该接入网设备需要发送该远端终端设备的数据时，可以采用为该远端终端设备分配的RNTI对用于调度该远端终端设备的下行数据传输的PDCCH进行加扰，以使得该中继终端设备可以确定通过该RNTI寻址接收到的二层PDU所对应的远端终端设备，但本发明实施例不限于此。
可选地，层二的第一配置信息可以包括下列信息中的至少一种：中继特定逻辑信道标识(Logical Channel IDentifier，LCID)、为该远端终端设备分配的层二标识以及为该远端终端设备分配的RNTI。或者，该层二的第一配置信息还可以包括其它用于进行中继传输的信息，本发明实施例对此不做限定。
具体地，该中继特定LCID可以用于标识中继传输。此时，在该接入网设备在接收到该中继终端设备发送的二层PDU或该中继终端设备在接收到 该接入网设备发送的二层PDU时，可以根据该二层PDU中携带的该中继特定LCID，确定该二层PDU中携带中继数据，但本发明实施例不限于此。
层二标识可以指在层二进行封装和识别的标识，该层二标识可以用于在中继传输中标识该远端终端设备，可选地，该层二标识的长度可以小于终端设备长度，这样，与在二层PDU中携带终端设备标识相比，在PDU中携带该层二标识可以降低信令开销，但本发明实施例不限于此。可选地，该层二标识可以设置在MAC层、RLC层或PDCP层。或者，该远端终端设备和该接入网设备的层二还可以新增适配层，其中，该适配层可以位于该MAC层和PDCP层之间的任意可选位置，并且可以将该层二标识设置在适配层，但本发明实施例不限于此。
可选地，该中继终端设备与该远端终端设备之间的用户面对等层的配置信息可以包括该中继终端设备与该远端终端设备的用于与对方进行中继传输的物理层和层二的配置信息，为了便于描述，可以将该物理层和层二的配置信息分别称为物理层的第二配置信息和层二的第二配置信息，但本发明实施例不限于此。具体地，该物理层的第二配置信息可以参见上面描述，为了简洁，这里不再赘述。该层二的第二配置信息可以包括该远端终端设备的层二标识或其它信息，但本发明实施例不限于此。
可选地，该接入网设备与该远端终端设备之间的用户面对等层的配置信息可以包括RLC层配置信息和PDCP层配置信息中的至少一种，此时，该中继终端设备可以向远端终端设备发送用于指示该RLC层配置信息和PDCP层配置信息中的至少一种的指示信息，以便于该远端终端设备进行相应配置，但本发明实施例不限于此。
可选地，如果该承载建立请求还用于请求建立该远端终端设备的PDN连接，则该接入网设备还可以与该核心网设备建立该远端终端设备的PDN连接，并向该中继终端设备发送该PDN连接的配置信息，例如IP地址，等等。此时，可选地，该中继终端设备还可以向该远端终端设备发送该PDN连接的配置信息，本发明实施例不限于此。
可选地，该中继终端设备可以根据该EPS承载的配置信息，进行相应配置，并在配置完成后向该接入网设备发送重配置完成消息(例如RRC连接重配置完成消息)和上行信息转换(Uplink Information Transfer)消息，但本发明实施例不限于此。
因此，根据本发明实施例提供的用于中继传输的方法，通过中继终端设备向核心网设备发送承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载，该核心网设备和接入网设备根据该承载建立请求，建立该远端终端设备的EPS承载，其中，该EPS承载包括该接入网设备与该中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的设备到设备D2D数据传输通道。这样，该中继终端设备可以采用该EPS承载中继该远端终端设备和该接入网设备之间的数据传输，有利于该中继终端设备采用不同的方式进行中继，无需进行NET穿越，从而降低中继传输的数据处理复杂度。
下面将结合具体的例子详细描述本发明实施例。应注意，这些例子只是为了帮助本领域技术人员更好地理解本发明实施例，而非限制本发明实施例的范围。
为了便于描述，在下面的例子中假设蜂窝网络已经为远端终端设备建立了PDN连接和承载，假设远端终端设备具体为远端UE，中继终端设备具体为中继UE，网络设备具体为eNB，但本发明实施例不限于此。
图5示意性地示出了本发明实施例提供的建立承载的方法300。在该方法300中，假设该远端终端设备已经附着到蜂窝网络(例如演进型陆地无线接入网(Evolved Universal Terrestrial Radio Access Network，E-UTRAN)，或者该远端终端设备已经与蜂窝网络建立了PDN连接，但本发明实施例不限于此。
S310，远端终端设备发现中继终端设备并且驻留。
S320，远端终端设备向中继终端设备发送直接通信请求(Direct Communication Request)，其中，该直接通信请求可以携带该远端终端设备的终端设备标识和该远端终端设备的PDN连接的IP地址。
该直接通信请求可以具体用于建立该远端终端设备与该中继终端设备之间的D2D通信链路，例如，该远端终端设备与该中继终端设备之间的PC5连接，但本发明实施例不限于此。
S330，中继终端设备在接收到远端终端设备发送的直接通信请求之后，通过eNB向MME上报该远端终端设备的终端设备标识和PDN连接的IP地址。
S340，MME可以存储该终端设备标识和IP地址，并将其传输至P-GW (或S-GW)。
S350，MME和P-GW为该远端终端设备分配S1-U接口的GTP隧道，例如隧道端点标识符(Tunnel Endpoint Identifier，TEID)等。
S360，eNB为远端终端设备分配中继终端设备与eNB之间的无线承载。
可选地，该无线承载的配置信息可以包括物理层配置信息或物理层配置信息和MAC层配置信息，可选地，该MAC层配置信息可以包括为该远端终端设备分配的层二标识。或者，该eNB还可以向该中继终端设备发送该远端终端设备的RLC层配置和/或PDCP层配置，但本发明实施例不限于此。
S330，中继终端设备向远端终端设备发送直接通信响应。
可选的，该直接通信响应可以携带该层二标识和/或RRC容器，其中，该RRC容器可以封装有RLC层配置和/或PDCP层配置。相应地，该远端终端设备在接收直接通信响应之后，可以根据该直接通信响应中的RRC容器，配置相应的RLC层和/或PDCP层，但本发明实施例不限于此。
图6示意性地示出了本发明实施例提供的另一建立承载的方法400。在该方法400中，假设远端终端设备还未建立PDN连接。
S410，远端终端设备发现中继终端设备并且驻留。
S420，远端终端设备向中继终端设备发送直接通信请求，该直接通信请求可以携带远端终端设备的终端设备标识和用于请求建立PDN连接的指示信息。
此时，该直接通信请求可以用于请求建立该远端终端设备与该中继终端设备之间的PC5连接，并且还用于请求建立该远端终端设备与蜂窝网络之间的PDN连接。
S430，中继终端设备可以根据该直接通信请求，通过eNB向MME发送PDN连接建立请求，请求建立远端终端设备的PDN连接。可选地，该PDN连接建立请求可以携带远端终端设备的终端设备标识。
S440，核心网设备(MME或S-GW/P-GW)为远端终端设备创建PDN连接并且为该远端终端设备分配IP地址。
S450，MME通过eNB向中继终端设备发送PDN连接建立响应，该PDN连接建立响应携带PDN连接的配置信息，例如IP地址等。
S460，MME为远端终端设备分配S1-U的GTP隧道，例如TEID等。
S430，eNB为远端终端设备分配中继终端设备与eNB之间的无线承载。
可选地，该无线承载的配置信息可以包括物理层的配置信息或物理层的配置信息和层二的配置信息，但本发明实施例不限于此。
S440，中继终端设备向远端终端设备发送直接通信响应。
可选的，该直接通信响应可以携带层二标识和/或RRC容器，并且该直接通信响应还可以携带该PDN连接的信息，例如IP地址等等，但本发明实施例不限于此。
应注意，图3至图6的例子是为了帮助本领域技术人员更好地理解本发明实施例，而非要限制本发明实施例的范围。本领域技术人员根据所给出的图3至图6的例子，显然可以进行各种等价的修改或变化，这样的修改或变化也落入本发明实施例的范围内。
应理解，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
上文中结合图1至图6，详细描述了根据本发明实施例的用于中继传输的方法，下面将结合图7至图12，详细描述根据本发明实施例的用于中继传输的装置。
图7示出了本发明实施例提供的中继终端设备500。如图7所示，该中继终端设备500包括：
发送单元510，用于向核心网设备发送承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载；
接收单元520，用于接收接入网设备发送的重配置消息，该重配置消息携带为该远端终端设备建立的EPS承载的配置信息，其中，该EPS承载包括该接入网设备与该中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的D2D数据传输通道。
可选地，该承载建立请求携带该远端终端设备的终端设备标识。
可选地，该EPS承载的配置信息包括该中继终端设备与该接入网设备之间的蜂窝通信接口的配置信息和该中继终端设备与该远端终端设备之间的D2D通信接口的配置信息。
可选地，该蜂窝通信接口的配置信息具体为物理层的第一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息；或者
该蜂窝通信接口的配置信息具体为物理层的第一配置信息和层二的第 一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息和层二的第二配置信息中的至少一种。
可选地，该物理层的第一配置信息包括下列信息中的至少一种：该蜂窝通信接口上用于中继传输的第一传输资源的信息、中继特定RNTI、中继传输的数据量区间与PUCCH资源之间的对应关系以及中继传输的数据量区间与前导码之间的对应关系，其中，该中继特定RNTI用于该接入网设备对用于调度该远端终端设备的下行数据传输的物理下行控制信道进行加扰。
可选地，该物理层的第二配置信息包括：该D2D通信接口上用于中继传输的第二传输资源的信息。
可选地，该层二的第一配置信息包括下列信息中的至少一种：中继特定LCID以及为该远端终端设备分配的层二标识，其中，该中继特定LCID用于标识中继传输。
可选地，该层二的第二配置信息包括：为该远端终端设备分配的层二标识。
可选地，该EPS承载的配置信息还包括该接入网设备与该远端终端设备之间的用户面对等层的配置信息；
相应地，该发送单元510还用于向该远端终端设备发送该接入网设备与该远端终端设备之间的用户面对等层的配置信息。
可选地，该接收单元520还用于在该发送单元510向核心网设备发送承载建立请求之前，接收该远端终端设备的连接建立请求，该连接建立请求用于请求建立该中继终端设备与该远端终端设备之间的D2D通信链路；
相应地，该发送单元510具体用于根据该接收单元520接收的该连接建立请求，向核心网设备发送承载建立请求。
可选地，该发送单元510具体用于向核心网设备发送非接入层消息，该非接入层消息接待该承载建立请求。
可选地，该承载建立请求携带该远端终端设备的终端设备标识；相应地，该EPS承载是该核心网设备通过向该接入网设备发送应用层协议信令建立的，其中，该应用层协议信令携带该远端终端设备的终端设备标识。
可选地，该发送单元510具体用于向该接入网设备发送RRC消息，该RRC消息携带该承载建立请求，以便于该接入网设备根据该RRC消息向核心网设备发送用于请求建立该远端终端设备的承载的应用层协议信令。
可选地，该承载建立请求还用于请求建立该远端终端设备的PDN连接。此时，该重配置消息还携带为该远端终端设备建立的PDN连接的配置信息；该发送单元510还用于向该远端终端设备发送该PDN连接的配置信息。
在一个可选例子中，该中继终端设备500可以对应于上述方法实施例中的中继终端设备，并且可以用于执行上述方法实施例中与中继终端设备对应的各个步骤和/或流程，为了简洁，这里不再赘述。
图8示出了本发明实施例提供的用于中继传输的装置600。如图8所示，该装置600包括：
接收单元610，用于接收中继终端设备发送的承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载；
处理单元620，用于根据该接收单元610接收的该承载建立请求，建立该远端终端设备的EPS承载，其中，该EPS承载包括接入网设备与该中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的D2D数据传输通道。
可选地，该承载建立请求携带该远端终端设备的终端设备标识。
可选地，该接收单元610具体用于接收该中继终端设备发送的非接入层消息，该非接入层消息接待该承载建立请求；
相应地，该装置600还包括：发送单元，该处理单元620具体用于通过该发送单元向该接入网设备发送应用层协议信令，其中，该应用层协议信令携带该远端终端设备的终端设备标识。
可选地，该接收单元610具体用于接收该接入网设备发送的应用层协议信令，该应用层协议信令是该接入网设备根据该中继终端设备发送的RRC消息发送的，该RRC消息携带该承载建立请求。
在一个可选例子中，该装置600可以对应于上述方法实施例中的核心网设备，并且可以用于执行上述方法实施例中与核心网设备对应的各个步骤和/或流程。为了简洁，这里不再赘述。
图9示出了本发明实施例提供的另一种用于中继传输的装置700。如图9所示，该装置700包括：
接收单元710，用于接收承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载；
处理单元720，用于根据该接收单元710接收的该承载建立请求，建立 该远端终端设备的EPS承载，其中，该EPS承载包括接入网设备与中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的D2D数据传输通道；
发送单元730，用于向该中继终端设备发送重配置消息，该重配置消息携带该处理单元720建立的该EPS承载的配置信息。
可选地，该EPS承载的配置信息包括该中继终端设备与该接入网设备之间的蜂窝通信接口的配置信息和该中继终端设备与该远端终端设备之间的D2D通信接口的配置信息。
可选地，该蜂窝通信接口的配置信息具体为物理层的第一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息；或者
该蜂窝通信接口的配置信息具体为物理层的第一配置信息和层二的第一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息和层二的第二配置信息中的至少一种。
可选地，该物理层的第一配置信息包括下列信息中的至少一种：该蜂窝通信接口上用于中继传输的第一传输资源的信息、中继特定RNTI、中继传输的数据量区间与PUCCH资源之间的对应关系以及中继传输的数据量区间与前导码之间的对应关系，其中，该中继特定RNTI用于该接入网设备对用于调度该远端终端设备的下行数据传输的物理下行控制信道进行加扰。
可选地，该物理层的第二配置信息包括：该D2D通信接口上用于中继传输的第二传输资源的信息。
可选地，该层二的第一配置信息包括下列信息中的至少一种：中继特定LCID以及为该远端终端设备分配的层二标识，其中，该中继特定LCID用于标识中继传输。
可选地，该层二的第二配置信息包括：为该远端终端设备分配的层二标识。
可选地，该EPS承载的配置信息还包括该接入网设备与该远端终端设备之间的用户面对等层的配置信息。
可选地，该接收单元710具体用于接收该中继终端设备发送的RRC消息，该RRC消息携带该承载建立请求；
相应地，该处理单元720具体用于根据该RRC消息，通过该发送单元730向核心网设备发送用于请求建立该远端终端设备的承载的应用层协议信 令。
可选地，该接收单元710具体用于接收核心网设备发送的应用层协议信令，该应用层协议信令携带该承载建立请求。
可选地，该承载建立请求携带该远端终端设备的终端设备标识。
可选地，该承载建立请求还用于请求建立该远端终端设备的PDN连接。此时，该处理单元720还用于根据该承载建立请求，建立该远端终端设备的PDN连接；相应地，该发送单元730还用于向该中继终端设备发送该PDN连接的配置信息。
在一个可选例子中，该装置700可以对应于上述方法实施例中的接入网设备，并且可以用于执行上述方法实施例中与接入网设备对应的各个步骤和/或流程。为了简洁，这里不再赘述。
应理解，上述装置500、装置600和装置700均以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(Application Specific Integrated Circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。
图10示出了本发明实施例提供的中继终端设备800。如图10所示，该中继终端设备800包括：
发送器810，用于向核心网设备发送承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载；
接收器820，用于接收接入网设备发送的重配置消息，该重配置消息携带为该远端终端设备建立的EPS承载的配置信息，其中，该EPS承载包括该接入网设备与该中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的D2D数据传输通道。
可选地，该承载建立请求携带该远端终端设备的终端设备标识。
可选地，该EPS承载的配置信息包括该中继终端设备与该接入网设备之间的蜂窝通信接口的配置信息和该中继终端设备与该远端终端设备之间的D2D通信接口的配置信息。
可选地，该蜂窝通信接口的配置信息具体为物理层的第一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息；或者
该蜂窝通信接口的配置信息具体为物理层的第一配置信息和层二的第 一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息和层二的第二配置信息中的至少一种。
可选地，该物理层的第一配置信息包括下列信息中的至少一种：该蜂窝通信接口上用于中继传输的第一传输资源的信息、中继特定RNTI、中继传输的数据量区间与PUCCH资源之间的对应关系以及中继传输的数据量区间与前导码之间的对应关系，其中，该中继特定RNTI用于该接入网设备对用于调度该远端终端设备的下行数据传输的物理下行控制信道进行加扰。
可选地，该物理层的第二配置信息包括：该D2D通信接口上用于中继传输的第二传输资源的信息。
可选地，该层二的第一配置信息包括下列信息中的至少一种：中继特定LCID以及为该远端终端设备分配的层二标识，其中，该中继特定LCID用于标识中继传输。
可选地，该层二的第二配置信息包括：为该远端终端设备分配的层二标识。
可选地，该EPS承载的配置信息还包括该接入网设备与该远端终端设备之间的用户面对等层的配置信息；
相应地，该发送器810还用于向该远端终端设备发送该接入网设备与该远端终端设备之间的用户面对等层的配置信息。
可选地，该接收器820还用于在该发送器810向核心网设备发送承载建立请求之前，接收该远端终端设备的连接建立请求，该连接建立请求用于请求建立该中继终端设备与该远端终端设备之间的D2D通信链路；
相应地，该发送器810具体用于根据该接收器820接收的该连接建立请求，向核心网设备发送承载建立请求。
可选地，该发送器810具体用于向核心网设备发送非接入层消息，该非接入层消息接待该承载建立请求。
可选地，该承载建立请求携带该远端终端设备的终端设备标识；相应地，该EPS承载是该核心网设备通过向该接入网设备发送应用层协议信令建立的，其中，该应用层协议信令携带该远端终端设备的终端设备标识。
可选地，该发送器810具体用于向该接入网设备发送RRC消息，该RRC消息携带该承载建立请求，以便于该接入网设备根据该RRC消息向核心网设备发送用于请求建立该远端终端设备的承载的应用层协议信令。
可选地，该承载建立请求还用于请求建立该远端终端设备的PDN连接。此时，该重配置消息还携带为该远端终端设备建立的PDN连接的配置信息；该发送器810还用于向该远端终端设备发送该PDN连接的配置信息。
在一个可选例子中，该中继终端设备800可以对应于上述方法实施例中的中继终端设备，并且可以用于执行上述方法实施例中与中继终端设备对应的各个步骤和/或流程。可选地，装置800还可以包括存储器和处理器，该存储器可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。处理器可以用于执行存储器中存储的指令，并且当该处理器执行存储器中存储的指令时，该处理器用于执行上述方法实施例的各个步骤和/或流程。
图11示出了本发明实施例提供的用于中继传输的装置900。如图11所示，该装置900包括：
接收器910，用于接收中继终端设备发送的承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载；
处理器920，用于根据该接收器910接收的该承载建立请求，建立该远端终端设备的EPS承载，其中，该EPS承载包括接入网设备与该中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的D2D数据传输通道。
可选地，该承载建立请求携带该远端终端设备的终端设备标识。
可选地，该接收器910具体用于接收该中继终端设备发送的非接入层消息，该非接入层消息接待该承载建立请求；
相应地，该装置900还包括：发送器，该处理器920具体用于通过该发送器向该接入网设备发送应用层协议信令，其中，该应用层协议信令携带该远端终端设备的终端设备标识。
可选地，该接收器910具体用于接收该接入网设备发送的应用层协议信令，该应用层协议信令是该接入网设备根据该中继终端设备发送的RRC消息发送的，该RRC消息携带该承载建立请求。
在一个可选例子中，该装置900可以对应于上述方法实施例中的核心网设备，并且可以用于执行上述方法实施例中与核心网设备对应的各个步骤和/或流程。可选地，装置900还可以包括存储器，该存储器可以包括只读存储 器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。处理器可以用于执行存储器中存储的指令，并且当该处理器执行存储器中存储的指令时，该处理器用于执行上述方法实施例的各个步骤和/或流程。
图12示出了本发明实施例提供的另一种用于中继传输的装置1000。如图12所示，该装置1000包括：
接收器1010，用于接收承载建立请求，该承载建立请求用于请求建立远端终端设备的EPS承载；
处理器1020，用于根据该接收器1010接收的该承载建立请求，建立该远端终端设备的EPS承载，其中，该EPS承载包括接入网设备与中继终端设备之间的蜂窝数据传输通道以及该中继终端设备与该远端终端设备之间的D2D数据传输通道；
发送器1030，用于向该中继终端设备发送重配置消息，该重配置消息携带该处理器1020建立的该EPS承载的配置信息。
可选地，该EPS承载的配置信息包括该中继终端设备与该接入网设备之间的蜂窝通信接口的配置信息和该中继终端设备与该远端终端设备之间的D2D通信接口的配置信息。
可选地，该蜂窝通信接口的配置信息具体为物理层的第一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息；或者
该蜂窝通信接口的配置信息具体为物理层的第一配置信息和层二的第一配置信息，该D2D通信接口的配置信息具体为物理层的第二配置信息和层二的第二配置信息中的至少一种。
可选地，该物理层的第一配置信息包括下列信息中的至少一种：该蜂窝通信接口上用于中继传输的第一传输资源的信息、中继特定RNTI、中继传输的数据量区间与PUCCH资源之间的对应关系以及中继传输的数据量区间与前导码之间的对应关系，其中，该中继特定RNTI用于该接入网设备对用于调度该远端终端设备的下行数据传输的物理下行控制信道进行加扰。
可选地，该物理层的第二配置信息包括：该D2D通信接口上用于中继传输的第二传输资源的信息。
可选地，该层二的第一配置信息包括下列信息中的至少一种：中继特定LCID以及为该远端终端设备分配的层二标识，其中，该中继特定LCID用 于标识中继传输。
可选地，该层二的第二配置信息包括：为该远端终端设备分配的层二标识。
可选地，该EPS承载的配置信息还包括该接入网设备与该远端终端设备之间的用户面对等层的配置信息。
可选地，该接收器1010具体用于接收该中继终端设备发送的RRC消息，该RRC消息携带该承载建立请求；
相应地，该处理器1020具体用于根据该RRC消息，通过该发送器1030向核心网设备发送用于请求建立该远端终端设备的承载的应用层协议信令。
可选地，该接收器1010具体用于接收核心网设备发送的应用层协议信令，该应用层协议信令携带该承载建立请求。
可选地，该承载建立请求携带该远端终端设备的终端设备标识。
可选地，该承载建立请求还用于请求建立该远端终端设备的PDN连接。此时，该处理器1020还用于根据该承载建立请求，建立该远端终端设备的PDN连接；相应地，该发送器1030还用于向该中继终端设备发送该PDN连接的配置信息。
在一个可选例子中，该装置1000可以对应于上述方法实施例中的接入网设备，并且可以用于执行上述方法实施例中与接入网设备对应的各个步骤和/或流程。可选地，装置1000还可以包括存储器，该存储器可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。处理器可以用于执行存储器中存储的指令，并且当该处理器执行存储器中存储的指令时，该处理器用于执行上述方法实施例的各个步骤和/或流程。
应理解，在本发明实施例中，该处理器可以是中央处理单元(Central Processing Unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合 执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器执行存储器中的指令，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应理解，为了简洁，本文对于实施例的描述着重于强调各个实施例之间的不同之处，其相同或相似之处可以相互参考。
本领域普通技术人员可以意识到，结合本文中所公开的实施例中描述的各方法步骤和单元，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各实施例的步骤及组成。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。本领域普通技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接，也可以是电的，机械的或其它的形式连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本发明实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分，或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者接入网设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到各种等效的修改或替换，这些修改或替换都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (46)

  1. 一种用于中继传输的方法，其特征在于，包括：
    中继终端设备向核心网设备发送承载建立请求，所述承载建立请求用于请求建立远端终端设备的演进型分组系统EPS承载；
    所述中继终端设备接收接入网设备发送的重配置消息，所述重配置消息携带为所述远端终端设备建立的EPS承载的配置信息，其中，所述EPS承载包括所述接入网设备与所述中继终端设备之间的蜂窝数据传输通道以及所述中继终端设备与所述远端终端设备之间的设备到设备D2D数据传输通道。
  2. 根据权利要求1所述的方法，其特征在于，所述EPS承载的配置信息包括所述中继终端设备与所述接入网设备之间的蜂窝通信接口的配置信息和所述中继终端设备与所述远端终端设备之间的D2D通信接口的配置信息；
    所述蜂窝通信接口的配置信息具体为物理层的第一配置信息，所述D2D通信接口的配置信息具体为物理层的第二配置信息；或者
    所述蜂窝通信接口的配置信息具体为物理层的第一配置信息和层二的第一配置信息，所述D2D通信接口的配置信息具体为物理层的第二配置信息和层二的第二配置信息中的至少一种。
  3. 根据权利要求2所述的方法，其特征在于，所述物理层的第一配置信息包括下列信息中的至少一种：所述蜂窝通信接口上用于中继传输的第一传输资源的信息、中继特定无线网络临时标识RNTI、中继传输的数据量区间与物理上行控制信道PUCCH资源之间的对应关系以及中继传输的数据量区间与前导码之间的对应关系，其中，所述中继特定RNTI用于所述接入网设备对用于调度所述远端终端设备的下行数据传输的物理下行控制信道进行加扰；
    所述物理层的第二配置信息包括：所述D2D通信接口上用于中继传输的第二传输资源的信息。
  4. 根据权利要求2或3所述的方法，其特征在于，所述层二的第一配置信息包括下列信息中的至少一种：中继特定逻辑信道标识LCID以及为所述远端终端设备分配的层二标识，其中，所述中继特定LCID用于标识中继传输；和/或
    所述层二的第二配置信息包括：为所述远端终端设备分配的层二标识。
  5. 根据权利要求2至4中任一项所述的方法，其特征在于，所述EPS承载的配置信息还包括所述接入网设备与所述远端终端设备之间的用户面对等层的配置信息；
    所述方法还包括：
    向所述远端终端设备发送所述接入网设备与所述远端终端设备之间的用户面对等层的配置信息。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，在所述中继终端设备向核心网设备发送承载建立请求之前，所述方法还包括：
    所述中继终端设备接收所述远端终端设备的连接建立请求，所述连接建立请求用于请求建立所述中继终端设备与所述远端终端设备之间的D2D通信链路；
    所述中继终端设备向核心网设备发送承载建立请求，包括：
    所述中继终端设备根据所述连接建立请求，向核心网设备发送承载建立请求。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述中继终端设备向核心网设备发送承载建立请求，包括：
    所述中继终端设备向核心网设备发送非接入层消息，所述非接入层消息接待所述承载建立请求。
  8. 根据权利要求7所述的方法，其特征在于，所述承载建立请求携带所述远端终端设备的终端设备标识；
    所述EPS承载是所述核心网设备通过向所述接入网设备发送应用层协议信令建立的，其中，所述应用层协议信令携带所述远端终端设备的终端设备标识。
  9. 根据权利要求1至6中任一项所述的方法，其特征在于，所述中继终端设备向核心网设备发送承载建立请求，包括：
    所述中继终端设备向所述接入网设备发送无线资源控制RRC消息，所述RRC消息携带所述承载建立请求，以便于所述接入网设备根据所述RRC消息向核心网设备发送用于请求建立所述远端终端设备的承载的应用层协议信令。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述承载 建立请求还用于请求建立所述远端终端设备的分组数据网络PDN连接；
    所述重配置消息还携带为所述远端终端设备建立的PDN连接的配置信息；
    所述方法还包括：
    所述中继终端设备向所述远端终端设备发送所述PDN连接的配置信息。
  11. 一种用于中继传输的方法，其特征在于，包括：
    核心网设备接收中继终端设备发送的承载建立请求，所述承载建立请求用于请求建立远端终端设备的演进型分组系统EPS承载；
    所述核心网设备根据所述承载建立请求，建立所述远端终端设备的EPS承载，其中，所述EPS承载包括接入网设备与所述中继终端设备之间的蜂窝数据传输通道以及所述中继终端设备与所述远端终端设备之间的设备到设备D2D数据传输通道。
  12. 根据权利要求11所述的方法，其特征在于，所述承载建立请求携带所述远端终端设备的终端设备标识。
  13. 根据权利要求11或12所述的方法，其特征在于，所述核心网设备接收中继终端设备发送的承载建立请求，包括：
    核心网设备接收所述中继终端设备发送的非接入层消息，所述非接入层消息接待所述承载建立请求；
    所述核心网设备根据所述承载建立请求，建立所述远端终端设备的EPS承载，包括：
    所述核心网设备通过向所述接入网设备发送应用层协议信令，其中，所述应用层协议信令携带所述远端终端设备的终端设备标识。
  14. 根据权利要求11或12所述的方法，其特征在于，所述核心网设备接收中继终端设备发送的承载建立请求，包括：
    所述核心网设备接收所述接入网设备发送的应用层协议信令，所述应用层协议信令是所述接入网设备根据所述中继终端设备发送的无线资源控制RRC消息发送的，所述RRC消息携带所述承载建立请求。
  15. 一种用于中继传输的方法，其特征在于，包括：
    接入网设备接收承载建立请求，所述承载建立请求用于请求建立远端终端设备的演进型分组系统EPS承载；
    所述接入网设备根据所述承载建立请求，建立所述远端终端设备的EPS 承载，其中，所述EPS承载包括接入网设备与中继终端设备之间的蜂窝数据传输通道以及所述中继终端设备与所述远端终端设备之间的设备到设备D2D数据传输通道；
    所述接入网设备向所述中继终端设备发送重配置消息，所述重配置消息携带所述EPS承载的配置信息。
  16. 根据权利要求15所述的方法，其特征在于，所述EPS承载的配置信息包括所述中继终端设备与所述接入网设备之间的蜂窝通信接口的配置信息和所述中继终端设备与所述远端终端设备之间的D2D通信接口的配置信息；
    所述蜂窝通信接口的配置信息具体为物理层的第一配置信息，所述D2D通信接口的配置信息具体为物理层的第二配置信息；或者
    所述蜂窝通信接口的配置信息具体为物理层的第一配置信息和层二的第一配置信息，所述D2D通信接口的配置信息具体为物理层的第二配置信息和层二的第二配置信息中的至少一种。
  17. 根据权利要求16所述的方法，其特征在于，所述物理层的第一配置信息包括下列信息中的至少一种：所述蜂窝通信接口上用于中继传输的第一传输资源的信息、中继特定无线网络临时标识RNTI、中继传输的数据量区间与物理上行控制信道PUCCH资源之间的对应关系以及中继传输的数据量区间与前导码之间的对应关系，其中，所述中继特定RNTI用于所述接入网设备对用于调度所述远端终端设备的下行数据传输的物理下行控制信道进行加扰；
    所述物理层的第二配置信息包括：所述D2D通信接口上用于中继传输的第二传输资源的信息。
  18. 根据权利要求16或17所述的方法，其特征在于，所述层二的第一配置信息包括下列信息中的至少一种：中继特定逻辑信道标识LCID以及为所述远端终端设备分配的层二标识，其中，所述中继特定LCID用于标识中继传输；和/或
    所述层二的第二配置信息包括：为所述远端终端设备分配的层二标识。
  19. 根据权利要求16至18中任一项所述的方法，其特征在于，所述EPS承载的配置信息还包括所述接入网设备与所述远端终端设备之间的用户面对等层的配置信息。
  20. 根据权利要求15至19中任一项所述的方法，其特征在于，所述接入网设备接收承载建立请求，包括：
    所述接入网设备接收所述中继终端设备发送的无线资源控制RRC消息，所述RRC消息携带所述承载建立请求；
    所述接入网设备根据所述承载建立请求，建立所述远端终端设备的EPS承载，包括：
    所述接入网设备根据所述RRC消息，向核心网设备发送用于请求建立所述远端终端设备的承载的应用层协议信令。
  21. 根据权利要求15至19中任一项所述的方法，其特征在于，所述接入网设备接收承载建立请求，包括：
    所述接入网设备接收核心网设备发送的应用层协议信令，所述应用层协议信令携带所述承载建立请求。
  22. 根据权利要求15至21中任一项所述的方法，其特征在于，所述承载建立请求携带所述远端终端设备的终端设备标识。
  23. 根据权利要求15至22中任一项所述的方法，其特征在于，所述承载建立请求还用于请求建立所述远端终端设备的分组数据网络PDN连接；
    所述方法还包括：
    所述接入网设备根据所述承载建立请求，建立所述远端终端设备的PDN连接；
    所述接入网设备向所述中继终端设备发送所述PDN连接的配置信息。
  24. 一种中继终端设备，其特征在于，包括：
    发送单元，用于向核心网设备发送承载建立请求，所述承载建立请求用于请求建立远端终端设备的演进型分组系统EPS承载；
    接收单元，用于接收接入网设备发送的重配置消息，所述重配置消息携带为所述远端终端设备建立的EPS承载的配置信息，其中，所述EPS承载包括所述接入网设备与所述中继终端设备之间的蜂窝数据传输通道以及所述中继终端设备与所述远端终端设备之间的设备到设备D2D数据传输通道。
  25. 根据权利要求24所述的中继终端设备，其特征在于，所述EPS承载的配置信息包括所述中继终端设备与所述接入网设备之间的蜂窝通信接口的配置信息和所述中继终端设备与所述远端终端设备之间的D2D通信接口的配置信息；
    所述蜂窝通信接口的配置信息具体为物理层的第一配置信息，所述D2D通信接口的配置信息具体为物理层的第二配置信息；或者
    所述蜂窝通信接口的配置信息具体为物理层的第一配置信息和层二的第一配置信息，所述D2D通信接口的配置信息具体为物理层的第二配置信息和层二的第二配置信息中的至少一种。
  26. 根据权利要求25所述的中继终端设备，其特征在于，所述物理层的第一配置信息包括下列信息中的至少一种：所述蜂窝通信接口上用于中继传输的第一传输资源的信息、中继特定无线网络临时标识RNTI、中继传输的数据量区间与物理上行控制信道PUCCH资源之间的对应关系以及中继传输的数据量区间与前导码之间的对应关系，其中，所述中继特定RNTI用于所述接入网设备对用于调度所述远端终端设备的下行数据传输的物理下行控制信道进行加扰；
    所述物理层的第二配置信息包括：所述D2D通信接口上用于中继传输的第二传输资源的信息。
  27. 根据权利要求25或26所述的中继终端设备，其特征在于，所述层二的第一配置信息包括下列信息中的至少一种：中继特定逻辑信道标识LCID以及为所述远端终端设备分配的层二标识，其中，所述中继特定LCID用于标识中继传输；和/或
    所述层二的第二配置信息包括：为所述远端终端设备分配的层二标识。
  28. 根据权利要求25至27中任一项所述的中继终端设备，其特征在于，所述EPS承载的配置信息还包括所述接入网设备与所述远端终端设备之间的用户面对等层的配置信息；
    所述发送单元还用于向所述远端终端设备发送所述接入网设备与所述远端终端设备之间的用户面对等层的配置信息。
  29. 根据权利要求24至28中任一项所述的中继终端设备，其特征在于，所述接收单元还用于在所述发送单元向核心网设备发送承载建立请求之前，接收所述远端终端设备的连接建立请求，所述连接建立请求用于请求建立所述中继终端设备与所述远端终端设备之间的D2D通信链路；
    所述发送单元具体用于根据所述接收单元接收的所述连接建立请求，向核心网设备发送承载建立请求。
  30. 根据权利要求24至29中任一项所述的中继终端设备，其特征在于， 所述发送单元具体用于向核心网设备发送非接入层消息，所述非接入层消息接待所述承载建立请求。
  31. 根据权利要求30所述的中继终端设备，其特征在于，所述承载建立请求携带所述远端终端设备的终端设备标识；
    所述EPS承载是所述核心网设备通过向所述接入网设备发送应用层协议信令建立的，其中，所述应用层协议信令携带所述远端终端设备的终端设备标识。
  32. 根据权利要求24至29中任一项所述的中继终端设备，其特征在于，所述发送单元具体用于向所述接入网设备发送无线资源控制RRC消息，所述RRC消息携带所述承载建立请求，以便于所述接入网设备根据所述RRC消息向核心网设备发送用于请求建立所述远端终端设备的承载的应用层协议信令。
  33. 根据权利要求24至32中任一项所述的中继终端设备，其特征在于，所述承载建立请求还用于请求建立所述远端终端设备的分组数据网络PDN连接；
    所述重配置消息还携带为所述远端终端设备建立的PDN连接的配置信息；
    所述发送单元还用于向所述远端终端设备发送所述PDN连接的配置信息。
  34. 一种用于中继传输的装置，其特征在于，包括：
    接收单元，用于接收中继终端设备发送的承载建立请求，所述承载建立请求用于请求建立远端终端设备的演进型分组系统EPS承载；
    处理单元，用于根据所述接收单元接收的所述承载建立请求，建立所述远端终端设备的EPS承载，其中，所述EPS承载包括接入网设备与所述中继终端设备之间的蜂窝数据传输通道以及所述中继终端设备与所述远端终端设备之间的设备到设备D2D数据传输通道。
  35. 根据权利要求34所述的装置，其特征在于，所述承载建立请求携带所述远端终端设备的终端设备标识。
  36. 根据权利要求34或35所述的装置，其特征在于，所述接收单元具体用于接收所述中继终端设备发送的非接入层消息，所述非接入层消息接待所述承载建立请求；
    所述装置还包括：发送单元，所述处理单元具体用于通过所述发送单元向所述接入网设备发送应用层协议信令，其中，所述应用层协议信令携带所述远端终端设备的终端设备标识。
  37. 根据权利要求34或35所述的装置，其特征在于，所述接收单元具体用于接收所述接入网设备发送的应用层协议信令，所述应用层协议信令是所述接入网设备根据所述中继终端设备发送的无线资源控制RRC消息发送的，所述RRC消息携带所述承载建立请求。
  38. 一种用于中继传输的装置，其特征在于，包括：
    接收单元，用于接收承载建立请求，所述承载建立请求用于请求建立远端终端设备的演进型分组系统EPS承载；
    处理单元，用于根据所述接收单元接收的所述承载建立请求，建立所述远端终端设备的EPS承载，其中，所述EPS承载包括接入网设备与中继终端设备之间的蜂窝数据传输通道以及所述中继终端设备与所述远端终端设备之间的设备到设备D2D数据传输通道；
    发送单元，用于向所述中继终端设备发送重配置消息，所述重配置消息携带所述处理单元建立的所述EPS承载的配置信息。
  39. 根据权利要求38所述的装置，其特征在于，所述EPS承载的配置信息包括所述中继终端设备与所述接入网设备之间的蜂窝通信接口的配置信息和所述中继终端设备与所述远端终端设备之间的D2D通信接口的配置信息；
    所述蜂窝通信接口的配置信息具体为物理层的第一配置信息，所述D2D通信接口的配置信息具体为物理层的第二配置信息；或者
    所述蜂窝通信接口的配置信息具体为物理层的第一配置信息和层二的第一配置信息，所述D2D通信接口的配置信息具体为物理层的第二配置信息和层二的第二配置信息中的至少一种。
  40. 根据权利要求39所述的装置，其特征在于，所述物理层的第一配置信息包括下列信息中的至少一种：所述蜂窝通信接口上用于中继传输的第一传输资源的信息、中继特定无线网络临时标识RNTI、中继传输的数据量区间与物理上行控制信道PUCCH资源之间的对应关系以及中继传输的数据量区间与前导码之间的对应关系，其中，所述中继特定RNTI用于所述接入网设备对用于调度所述远端终端设备的下行数据传输的物理下行控制信道 进行加扰；
    所述物理层的第二配置信息包括：所述D2D通信接口上用于中继传输的第二传输资源的信息。
  41. 根据权利要求39或40所述的装置，其特征在于，所述层二的第一配置信息包括下列信息中的至少一种：中继特定逻辑信道标识LCID以及为所述远端终端设备分配的层二标识，其中，所述中继特定LCID用于标识中继传输；和/或
    所述层二的第二配置信息包括：为所述远端终端设备分配的层二标识。
  42. 根据权利要求39至41中任一项所述的装置，其特征在于，所述EPS承载的配置信息还包括所述接入网设备与所述远端终端设备之间的用户面对等层的配置信息。
  43. 根据权利要求38至42中任一项所述的装置，其特征在于，所述接收单元具体用于接收所述中继终端设备发送的无线资源控制RRC消息，所述RRC消息携带所述承载建立请求；
    所述处理单元具体用于根据所述RRC消息，通过所述发送单元向核心网设备发送用于请求建立所述远端终端设备的承载的应用层协议信令。
  44. 根据权利要求38至42中任一项所述的装置，其特征在于，所述接收单元具体用于接收核心网设备发送的应用层协议信令，所述应用层协议信令携带所述承载建立请求。
  45. 根据权利要求38至44中任一项所述的装置，其特征在于，所述承载建立请求携带所述远端终端设备的终端设备标识。
  46. 根据权利要求38至45中任一项所述的装置，其特征在于，所述承载建立请求还用于请求建立所述远端终端设备的分组数据网络PDN连接；
    所述处理单元还用于根据所述承载建立请求，建立所述远端终端设备的PDN连接；
    所述发送单元还用于向所述中继终端设备发送所述PDN连接的配置信息。
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JP6714708B2 (ja) 2020-06-24
JP2019517164A (ja) 2019-06-20
US20200162148A1 (en) 2020-05-21
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US20190028177A1 (en) 2019-01-24
EP3393188B1 (en) 2022-02-23
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US11223414B2 (en) 2022-01-11
KR20180125450A (ko) 2018-11-23

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