WO2018027820A1 - 一种链接建立方法及相关设备 - Google Patents

一种链接建立方法及相关设备 Download PDF

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Publication number
WO2018027820A1
WO2018027820A1 PCT/CN2016/094711 CN2016094711W WO2018027820A1 WO 2018027820 A1 WO2018027820 A1 WO 2018027820A1 CN 2016094711 W CN2016094711 W CN 2016094711W WO 2018027820 A1 WO2018027820 A1 WO 2018027820A1
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WO
WIPO (PCT)
Prior art keywords
access network
message
protocol layer
remote device
network protocol
Prior art date
Application number
PCT/CN2016/094711
Other languages
English (en)
French (fr)
Inventor
马洁
蔺波
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680087600.3A priority Critical patent/CN109479337A/zh
Priority to EP16912275.1A priority patent/EP3487260A4/en
Priority to PCT/CN2016/094711 priority patent/WO2018027820A1/zh
Publication of WO2018027820A1 publication Critical patent/WO2018027820A1/zh
Priority to US16/272,513 priority patent/US20190190587A1/en

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/20—Master-slave selection or change arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a link establishing method and related equipment.
  • WE Wearable Equipment
  • the terminal accesses the network, it needs to attach the attached link in the subscribed network, obtain the temporary identifier of the network after the completion of the attach, and establish an initial bearer of the terminal to the network side device.
  • the terminal is inconvenient to directly establish an initial bearer with the network side device. For example, when the terminal is outside the coverage of the network side device that provides the network service, the terminal cannot directly connect to the network side device. The terminal cannot obtain the network service provided by the network side device.
  • the embodiment of the present invention provides a link establishment method and related equipment, which can enable a remote terminal to establish an access network link to a network side device through a relay device, thereby improving network access flexibility.
  • an embodiment of the present invention provides a link establishment method, where the method includes: the relay device receives, by using a stub link between the relay device and the remote device, a first access network protocol layer sent by the remote device. 2 message, the first access network protocol layer 2 message is used to indicate that the remote device requests to establish an access network link between the network side device and the remote device; the relay device corresponds to the first access network protocol layer 2 message.
  • the relay device then receives a third access network protocol layer 2 message returned by the network side device in response to the second access network protocol layer 2 message, wherein the third access network protocol layer 2 message includes the remote end The radio bearer configuration information between the device and the network side device; the last relay device further generates a fourth access network protocol layer 2 message according to the third access network protocol layer 2 message and the fourth access network protocol layer 2 message sent to the remote device The access network to establish a link between the remote device and the network device.
  • the remote device and the network device are established by using the relay device.
  • the remote device can also successfully access the network side device, thereby improving network access flexibility.
  • the remote device can establish an access network link with the network side device through the relay device.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, thereby reducing the link establishment delay of the remote device and reducing the far distance. The signaling of the end device is transmitted thereby actually saving power consumption of the remote device.
  • the first access network protocol layer 2 message includes first indication information, where the first indication information is used to identify the remote device, and the first indication information includes at least one of the following information:
  • the first indication information is carried in the first access network protocol layer 2 message, so that the relay device can distinguish the remote device that sends the first access network protocol layer 2 message by using the first indication information.
  • the first indication information may be the MAC address of the remote device (where the MAC address is set by the hardware device vendor), and/or the IP address of the remote device, and the like.
  • the relay device before the relay device generates the second access network protocol layer 2 message according to the first access network protocol layer 2 message, the relay device further acquires the first message of the first access network protocol layer 2 message. Instructing information or terminal wireless link information, wherein the terminal wireless link information includes time domain or frequency domain physical information for distinguishing the remote device, a wireless link identifier for distinguishing the remote device, and a remote device for distinguishing the remote device Radio link protocol layer entity identification information. Therefore, the corresponding generated second access protocol layer 2 message can also identify the remote device.
  • the second access network protocol layer 2 message includes second indication information, where the second indication information is used to indicate, to the network side device, the remote device corresponding to the second access network protocol layer 2 message or The second access network protocol layer 2 message is indicated to be used by the remote device to request the network side device to establish the access network link.
  • the second indication information includes the number of second access network protocol layer 2 messages. According to the type and at least one of the following messages:
  • the second indication information is added to the second access network protocol layer 2 message, so that the network side device can identify the remote device requesting to establish the access network link by using the second indication message.
  • the third access network protocol layer 2 message includes third indication information, where the third indication information is used to enable the relay device to determine the remote device corresponding to the radio bearer configuration information, so that the relay device is Upon receiving the radio bearer configuration returned by the network side, the remote device can be determined according to the third indication message.
  • the third indication information includes a data type of the second access network protocol layer 2 message and at least one of the following messages:
  • the identifier of the remote device can uniquely identify the remote device, so the remote device can be determined by the above identifier.
  • the second access network protocol layer 2 message and/or the third access network protocol layer 2 message is sent by using a wireless signaling bearer or a wireless data bearer between the relay device and the network side device. .
  • the fourth access network protocol layer 2 message includes a cell temporary wireless identity of the remote device.
  • the relay device acquires one or more cell temporary wireless identifiers from the network side device, so that the relay device assigns one of the one or more cell temporary wireless identifiers to the remote device. Therefore, the relay device can actively acquire the temporary wireless identifier of the cell from the network side device, and the implementation process of the remote device accessing the network side device through the relay device is more flexible.
  • the relay UE notifies the remote device of the assigned cell temporary wireless identity via the stub link.
  • the first access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU;
  • the second access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU;
  • the access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU;
  • the fourth access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU. Pass no The same message type is sent to make the message transmission more flexible.
  • the relay device before the relay device sends the second access network protocol layer 2 message to the network side device, the relay device sends a fourth wireless signaling bearer setup request to the network side device; then the relay device receives the message again.
  • the fourth wireless signaling bearer configuration information returned by the network side device, so that the relay device sends the second access network protocol layer 2 message to the network by using the fourth wireless signaling bearer generated based on the fourth wireless signaling bearer configuration information Side equipment.
  • the subsequent second access network protocol layer 2 message can be sent through the fourth radio signaling bearer.
  • the relay device before the relay device sends the second access network protocol layer 2 message to the network side device, the relay device receives the fourth message returned by the network side device in response to the second access network protocol layer 2 message.
  • Wireless signaling carries configuration information.
  • the network side device returns the fourth radio signaling bearer configuration information, and the fourth radio signaling bearer is established, and the fourth radio signaling bearer is flexibly established.
  • an embodiment of the present invention provides a link establishment method, where the method includes: a network side device receives a second access network protocol layer 2 message sent by a relay device, where the second access network protocol layer 2 message is used. And requesting the network side device to establish an access network link between the network side device and the remote device; the network side device sends the third access network protocol layer 2 message to the relay device in response to the second access network protocol layer 2 message.
  • the third access network protocol layer 2 message includes radio bearer configuration information between the remote device and the network side device.
  • the access network link between the remote device and the network side device is established by the relay device, so that the remote device can also successfully access when directly communicating with the network side device.
  • Network side equipment to improve network access flexibility. For example, when the remote device is out of the coverage of the network side device, the remote device can establish an access network link with the network side device through the relay device.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, thereby reducing the link establishment delay of the remote device and reducing the far distance. The signaling of the end device is transmitted thereby actually saving power consumption of the remote device.
  • the third access network protocol layer 2 message includes third indication information, where the third indication information is used to enable the relay device to determine the remote device corresponding to the radio bearer configuration information. Therefore, when receiving the radio bearer configuration returned by the network side, the relay device can determine the remote device according to the third indication message.
  • the third indication information includes a data type of the second access network protocol layer 2 message and at least one of the following messages:
  • the identifier of the remote device can uniquely identify the remote device, so the remote device can be determined by the above identifier.
  • the second access network protocol layer 2 message and/or the third access network protocol layer 2 message is sent by using a wireless signaling bearer or a wireless data bearer between the relay device and the network side device. .
  • the network side device sends one or more cell temporary wireless identifiers to the relay device, so that the relay device assigns one of the one or more cell temporary wireless identifiers to the remote device. Therefore, the access network link between the remote device and the network side device can be successfully established.
  • the second access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU;
  • the third access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU.
  • an embodiment of the present invention provides a link establishment method, where the method includes: the remote device sends a first access network protocol layer 2 to the relay device by using a stub link between the remote device and the relay device.
  • the first access network protocol layer 2 message is used to indicate that the remote device requests to establish an access network link between the network side device and the remote device; the remote device receives the fourth access network protocol returned by the network side device.
  • a layer 2 message, where the fourth access network protocol layer 2 message is generated by the third access network protocol layer 2 message, where the third access network protocol layer 2 message includes between the remote device and the network side device.
  • Wireless bearer configuration information is used to indicate that the remote device requests to establish an access network link between the network side device and the remote device.
  • the access network link between the remote device and the network side device is established by the relay device, so that the remote device can also successfully access when directly communicating with the network side device.
  • Network side equipment to improve network access flexibility. For example, when the remote device is outside the coverage of the network side device, the remote device can establish access with the network side device through the relay device. Web link.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, thereby reducing the link establishment delay of the remote device and reducing the far distance. The signaling of the end device is transmitted thereby actually saving power consumption of the remote device.
  • the first access network protocol layer 2 message includes first indication information, where the first indication information is used to identify the remote device, and the first indication information includes at least one of the following information:
  • the first indication information is carried in the first access network protocol layer 2 message, so that the relay device can distinguish the remote device that sends the first access network protocol layer 2 message by using the first indication information.
  • the remote device obtains the cell temporary wireless identity of the remote device by using the fourth access network protocol layer 2 message, where the fourth access network protocol layer 2 message includes the cell temporary wireless identifier.
  • the remote device periodically obtains the cell temporary wireless identity of the remote device, so that the access guarantee is improved in the process of establishing an access network link between the remote device and the network device.
  • the first access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU;
  • the third access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU;
  • the Access Network Protocol Layer 2 message is an RLC PDU, a MAC DPU, or a PDCP PDU. Sending through different message types makes the message transmission more flexible.
  • an embodiment of the present invention provides a link establishment method, where the method includes: a relay device receives an access network protocol layer 2 message sent by a network side device, where the access network protocol layer 2 message is used to establish a network side.
  • An access network link between the device and the remote device, the access network protocol layer 2 message includes radio bearer configuration information between the remote device and the network side device; and the relay device further according to the access network protocol layer 2 message The radio bearer configuration is sent to the remote device through a wireless link between the relay device and the remote device.
  • the remote device in the case that the peripheral link mapping relationship between the remote device and the relay device is pre-stored in the network side device, the remote device does not need to send the connection to the network side device.
  • the request is forwarded, and the network side device actively sends the radio bearer configuration information to the remote device through the relay device to establish an access network link between the remote device and the network side device, so that in this scenario, the network side device and the remote device
  • the process of establishing an access network link between devices is easier.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, thereby reducing the link establishment delay of the remote device and reducing the far distance. The signaling of the end device is transmitted thereby actually saving power consumption of the remote device.
  • the access network protocol layer 2 message includes fifth indication information, and the fifth indication information is used to enable the relay device to determine the remote device corresponding to the radio bearer configuration information. Therefore, when receiving the radio bearer configuration returned by the network side, the relay device can determine the remote device according to the third indication message.
  • the fifth indication information includes a data type of the second access network protocol layer 2 message and at least one of the following messages:
  • the identifier of the remote device can uniquely identify the remote device, so the remote device can be determined by the above identifier.
  • the second access network protocol layer 2 message is sent by using a wireless signaling bearer or a wireless data bearer between the relay device and the network side device.
  • the second access network protocol layer 2 message is an RLC PDU, a MAC DPU, or a PDCP PDU.
  • the relay device acquires one or more cell temporary wireless identifiers from the network side device, so that the relay device assigns one of the one or more cell temporary wireless identifiers to the remote device. Therefore, the relay device can actively acquire the temporary wireless identifier of the cell from the network side device, and the implementation process of the remote device accessing the network side device through the relay device is more flexible.
  • an embodiment of the present invention provides a link establishment method, where the method includes: a network side device sends an access network protocol layer 2 message to a relay device, where the access network protocol layer 2 message is used to establish the network.
  • the remote device when the remote link mapping relationship between the remote device and the relay device is pre-stored in the network side device, the remote device does not need to send an access request to the network side device.
  • the network side device actively sends the radio bearer configuration information to the remote device through the relay device to establish an access network link between the remote device and the network side device, so that the network side device and the remote device are connected in this scenario.
  • the process of establishing a network link is easier.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, thereby reducing the link establishment delay of the remote device and reducing the far distance. The signaling of the end device is transmitted thereby actually saving power consumption of the remote device.
  • the access network protocol layer 2 message includes fifth indication information, and the fifth indication information is used to enable the relay device to determine the remote device corresponding to the radio bearer configuration information. Therefore, when receiving the radio bearer configuration returned by the network side, the relay device can determine the remote device according to the third indication message.
  • the fifth indication information includes a data type of the second access network protocol layer 2 message and at least one of the following messages:
  • the identifier of the remote device can uniquely identify the remote device, so the remote device can be determined by the above identifier.
  • the second access network protocol layer 2 message is sent by using a wireless signaling bearer or a wireless data bearer between the relay device and the network side device.
  • the second access network protocol layer 2 message is an RLC PDU, a MAC DPU, or a PDCP PDU.
  • the network side device sends one or more cell temporary wireless identifiers to the relay device, so that the relay device assigns one of the one or more cell temporary wireless identifiers to the remote device. Therefore, in a case where the peripheral link mapping relationship between the remote device and the relay device is pre-stored in the network side device, the network side device actively sends the cell temporary wireless identifier to the relay device, so that It is more convenient to establish an access network link between the remote device and the network side device.
  • the network side device before the network side device sends the access network protocol layer 2 message to the relay device, the network side device further acquires a correspondence between the relay device and the remote device, where the correspondence is used to indicate The relay device wirelessly communicates with the remote device. This makes the message transmission path more accurate.
  • an embodiment of the present invention provides a link selection method, where the method includes: a non-access layer NAS layer of a remote device obtains link selection result information according to the indication information, and sends the link selection result information to the connection. Initiating the AS layer, so that the AS layer determines whether to establish an access network link with the network side device by using the relay device according to the link selection result information; or, the AS layer may determine whether to pass the relay device according to the indication information. Establish an access network link with the network side device.
  • the indication information can reflect the data link requirement of the remote device
  • the manner in which the remote device establishes the link is determined by using the indication information, and the link selection result obtained by the determination manner accurately reflects the far
  • the access requirement of the end device is further determined by the AS layer according to the indication information, or the NAS layer obtains the link selection result according to the indication information and sends the result to the AS layer, thereby making the link selection mode more flexible. Therefore, it is also possible to further enhance the user's business experience.
  • the indication information includes at least one of the following: EMM registration information, internal setting information, communication entity layer status information, and data transmission request information. Since the indication information can accurately reflect the communication status of the remote device, the indication information can be used to determine the link selection result, so that the obtained result meets the requirement.
  • the EMM registration information includes an EMM registration status or an EMM unregistered status
  • the internal setting information includes a power saving mode, a non-power saving mode
  • the communication entity layer status information includes an out of service area, an ECM registration status, and an ECM not.
  • the data transmission request information includes QoS information and data type information
  • the data type information includes a voice caller, a voice call, and an emergency call.
  • the remote device employs an initial link between the establishment and the network side device through the relay device:
  • the EMM registration information is the EMM unregistered state
  • the internal setting information is the power saving mode
  • the communication entity status information is not in the service area
  • the data type information is the voice caller
  • the data type information is voiced. Calling, data type information is the emergency call; or,
  • the remote device establishes an initial link with the network side device through the relay device.
  • an embodiment of the present invention provides a relay device, where the relay device has the functions of implementing the foregoing first aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the relay device includes a processor, a receiver, and a transmitter configured to support the terminal in performing the corresponding functions in the above methods.
  • the receiver and transmitter are used to support communication between the terminal and the base station.
  • the relay device may further include a memory for coupling with the processor, which stores program instructions and data necessary for the terminal.
  • an embodiment of the present invention provides a network side device, where the network side device has the function of implementing the foregoing second aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the network side device may be a base station, or may be another network node, for example, a service GPRS support node, a mobility management entity, a network entity of a non-access stratum, or a network of a radio control resource layer. entity.
  • the structure of the base station includes a processor, a transmitter, and a receiver, and the processor is configured to support the base station to perform a corresponding function in the foregoing method.
  • the transmitter and receiver are used to support communication between the base station and the terminal.
  • the base station may further include a memory for coupling with the processor, which stores necessary program instructions and data of the base station.
  • an embodiment of the present invention provides a remote device, where the terminal has the function of implementing the foregoing third aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the remote device includes a processor, a receiver, and a transmitter configured to support the terminal in performing the corresponding functions in the methods described above.
  • the receiver and transmitter are used to support communication between the terminal and the base station.
  • the remote device may further include a memory for coupling with the processor, which stores program instructions and data necessary for the terminal.
  • an embodiment of the present invention provides a relay device, where the relay device has the foregoing implementation Four aspects of the function.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the relay device includes a processor, a receiver, and a transmitter configured to support the terminal in performing the corresponding functions in the above methods.
  • the receiver and transmitter are used to support communication between the terminal and the base station.
  • the relay device may further include a memory for coupling with the processor, which stores program instructions and data necessary for the terminal.
  • an embodiment of the present invention provides a network side device, where the network side device has the function of implementing the foregoing fifth aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the network side device may be a base station, or may be another network node, for example, a service GPRS support node, a mobility management entity, a network entity of a non-access stratum, or a network of a radio control resource layer. entity.
  • the structure of the base station includes a processor, a transmitter, and a receiver, and the processor is configured to support the base station to perform a corresponding function in the foregoing method.
  • the transmitter and receiver are used to support communication between the base station and the terminal.
  • the base station may further include a memory for coupling with the processor, which stores necessary program instructions and data of the base station.
  • an embodiment of the present invention provides a remote device, where the terminal has the function of implementing the sixth aspect.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the remote device includes a processor, a receiver, and a transmitter configured to support the terminal in performing the corresponding functions in the methods described above.
  • the receiver and transmitter are used to support communication between the terminal and the base station.
  • the remote device may further include a memory for coupling with the processor, which stores program instructions and data necessary for the terminal.
  • the embodiment of the present invention provides a link establishment system, where the system includes the relay device, the network side device, and the remote device.
  • the embodiment of the present invention provides a computer storage medium for storing the computer software instructions used in the foregoing relay device for the seventh aspect, which includes a program designed to perform the above aspects.
  • an embodiment of the present invention provides a computer storage medium for storing the foregoing
  • the embodiment of the present invention provides a computer storage medium for storing the computer software instructions used in the foregoing remote device for the ninth aspect, which comprises a program designed to perform the above aspects.
  • the embodiment of the present invention provides a computer storage medium for storing the computer software instructions used in the above-mentioned relay device for the tenth aspect, which comprises a program designed to execute the above aspects.
  • the embodiment of the present invention provides a computer storage medium for storing the computer software instructions used by the network side device according to the eleventh aspect, which includes a program designed to execute the foregoing aspect. .
  • the embodiment of the present invention provides a computer storage medium for storing the computer software instructions used in the remote device described in the twelfth aspect, which includes a program designed to execute the foregoing aspect. .
  • the access network link between the remote device and the network side device is established by the relay device, so that the remote device is inconvenient to directly communicate with the network side device. It can also successfully access network-side devices to improve network access flexibility. For example, when the remote device is out of the coverage of the network side device, the remote device can establish an access network link with the network side device through the relay device.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, thereby reducing the link establishment delay of the remote device and reducing the far distance. The signaling of the end device is transmitted thereby actually saving power consumption of the remote device.
  • FIG. 1 is a network architecture diagram of a link establishment system according to an embodiment of the present invention
  • FIG. 1 is a network architecture diagram of another link establishment system according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a protocol stack according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of an embodiment of a link establishing method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of another link establishment method according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a relay device according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of another relay device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another network side device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a remote device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of another remote device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a relay device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of another relay device according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of another network side device according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a remote device according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of another remote device according to an embodiment of the present invention.
  • the embodiment of the present invention provides a link establishment method and related equipment, which can enable a remote terminal to establish an access network link to a network side device through a relay device, thereby improving network access flexibility.
  • references to "an embodiment” herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the invention.
  • the appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.
  • FIG. 1-a is a network architecture diagram of a link establishment system according to an embodiment of the present invention
  • FIG. 1-b is another link establishment system according to an embodiment of the present invention.
  • Network architecture diagram. The link establishment method and the link selection method provided by the embodiments of the present invention may be performed based on the two network architecture diagrams.
  • the remote device 110, the relay device 120, and the network side device 130 are included.
  • the relay device is a device that can directly access the network side device 130 to establish communication with the network side device 130, and is used for forwarding data of the remote device or signaling to the mobile communication network device or data.
  • the remote device 110 may be located far away from the network side device 130 and outside the network coverage of the network side device 130, so that the network device cannot directly communicate with the network.
  • the side device 130 establishes a communication connection, but the connection between the remote device 110 and the relay device 120 can be directly established.
  • Bluetooth Bluetooth low energy, BLE for short
  • the wireless technology Wifi establishes a link, so that the remote device 110 can establish an access network link with the network side device 130 through the relay device 120 to perform uplink or downlink data transmission.
  • the remote device 110 may be a user equipment (User Equipment, UE for short) such as a mobile phone or a wearable device (WE), and the relay device 120 may also be a communication terminal such as a mobile phone or a wearable device.
  • the network side device 130 may be a network side device that provides network access resources, such as an evolved NodeB (eNodeB).
  • eNodeB evolved NodeB
  • the remote device 110 is in the network coverage of the network side device 130, that is, the remote device 110 can be connected to the network side device 130.
  • Straight The network communication connection is established, but when the remote device 110 directly accesses the network service provided by the network side device 130, a large transmission power is required, and since the remote device 110 is generally a wearable device with a relatively small battery capacity, Therefore, the operation of the remote device 110 is required to be low-power consumption, and when the remote device 110 communicates with the relay device 120, the required transmission power is relatively small, so in order to save power of the remote device 110,
  • the remote device 110 is connected to the access network between the network side device 130 through the relay device 120 to perform uplink or downlink data transmission.
  • FIG. 2 is a schematic structural diagram of a protocol stack according to an embodiment of the present invention.
  • the protocol stack is a control plane protocol stack between the remote device, the relay device, and the network side device.
  • the link establishment method and the link selection method provided by the embodiments of the present invention are all implemented based on the protocol stack structure.
  • the remote device and the network side device have a peer-to-peer Radio Resource Control (RRC) layer and a Packet Data Convergence Protocol (PDCP) layer.
  • RRC Radio Resource Control
  • PDCP Packet Data Convergence Protocol
  • the RRC layer is responsible for managing the parameter configuration of the access link of the remote device and establishing the bearer of the remote device (including the accessed radio bearer and the bearer of the network side device to the core network), and configuring the remote device to transmit data and signaling.
  • Safety parameters are responsible for managing the parameter configuration of the access link of the remote device and establishing the bearer of the remote device (including the accessed radio bearer and the bearer of the network side device to the core network), and configuring the remote device to transmit data and signaling.
  • the Mobility Management Entity Mobility Management Entity MME
  • the Serving GateWay SGW
  • PDN Gateway PDN Gateway
  • WE is directly linked to the eNB through the UU port.
  • the management of the core network for the WE is the same as when the relay UE is not used, so that the compatibility of the core network can be maintained, and when the WE and the relay UE are far away.
  • the eNB still maintains the context of the WE, and can quickly restore the transmission capability of the service data.
  • the mobility processing process is simple and the delay is small.
  • Such a protocol stack is for the eNB, the RRC upload and download data of the WE, especially the security parameters are directly managed by the eNB, and the integrity protection and encryption and decryption processes of the signaling and data transmission are only performed by the WE and the eNB.
  • the PDCP layer participates in the completion, and ensures that the WE to eNB signaling and/or data transmission is safe and reliable in the case that the WE passes through any one of the relay UEs, because the relay UE cannot decrypt the WE data.
  • the interface between the relay UE and the WE may be a Long Term Evolution (LTE) D2D, or a Bluetooth technology, or a wifi technology, or other terminal.
  • LTE Long Term Evolution
  • Wireless technology for direct communication.
  • FIG. 3 is a schematic flowchart diagram of an embodiment of a link establishing method according to an embodiment of the present invention. As shown in FIG. 3, the method may include the following steps:
  • the relay device sends the permission indication information to the remote device, to indicate that the remote UE has the authority to relay the UE.
  • the remote UE after the remote UE monitors the indication information, the remote UE selects an initial link between the UE and the network side device through the relay UE.
  • the relay UE may send a synchronization signal, or broadcast information, which is used by the remote device WE to discover that the UE can access the cellular network through the relay UE.
  • the content of the broadcast information includes a Public Lands Mobile Network (PLMN) identifier, a cellid and a Ueid, and further includes a Tracking Area (TA) of the cell in which the UE is relayed, or a TAlist.
  • PLMN Public Lands Mobile Network
  • TA Tracking Area
  • the PLMN identifier is an identifier of a network where the relay UE is camped, for example, China Mobile, which is used to indicate that the remote device can access the mobile network through the relay UE; and the cellid is the relay UE (relay UE) currently.
  • the identifier of the cell that is camped or served, Ueid is the identifier assigned to the relay UE by the base station or the core network device in the cellular network; the TA is the location tracking area to which the relay UE currently camps or belongs to the serving cell.
  • the broadcast information may further include an IP address of a base station in the cellular network
  • the broadcast information broadcasts an upper layer protocol type indication information code required by the Bluetooth or WiFi technology, and the code is used to notify the transmitting and receiving ends to identify a protocol type of the data packet.
  • the broadcast information is sent on a broadcast channel of Bluetooth (BlueTooth, BT for short), BLE or wifi.
  • Bluetooth Bluetooth, BT for short
  • BLE Bluetooth Low-power Bluetooth
  • the broadcast information may also be sent on other wireless technologies that both the remote device and the relay device can use.
  • the relay device sends the authentication authentication to the network side device and obtains the authorization of the network side device.
  • the RRC layer of the remote device when the RRC layer of the remote device receives the indication information or the signaling data packet of the upper layer, if the indication information or the signaling data packet indicates that the remote device and the network side device need to be established through the relay device, When the access network is linked, the remote device establishes an access network link with the network side device through the relay device having the relay authority.
  • the relay device first needs to perform authentication on the network side device, and becomes a relay UE that can establish an RRC link between the remote device and the network side device.
  • the point-to-point stub link refers to a communication connection between the remote device and the relay device.
  • the point-to-point stub link may be a D2D link, and a pre-configured profile is used to satisfy some initial RRC transmissions. Signaling.
  • the D2D link may be a Bluetooth link BTlink, where the profile includes at least the Bluetooth core protocol data transmission protocol L2CAP configuration parameter of the BTlink of the WE, the supported upper layer protocol type, and the corresponding indication information.
  • the remote device sends a first access network protocol layer 2 message to the relay device by using a stub link between the remote device and the relay device, where the first access network protocol layer 2 message is used.
  • the remote device is requested to establish an access network link between the network side device and the remote device.
  • the relay device receives the first access network protocol layer 2 message sent by the remote device by using the stub link between the relay device and the remote device, where the first access network protocol layer 2
  • the message is used to indicate that the remote device requests to establish an access network link between the network side device and the remote device.
  • the first access network protocol layer 2 message includes first indication information, where the first indication information is used to identify the remote device, and the first indication information includes the first access network
  • the data type of the protocol layer 2 message and at least one of the following:
  • the identifier of the remote device The identifier of the remote device, the service type of the remote device, the group attribute of the remote device, and the device type or device level of the remote device.
  • the data type of the first access network protocol layer 2 message is used to indicate that the message is signaling data or service data, and the service data may be session type service data, stream type service data, interaction type service data or background. Class business data.
  • the first indication information used to identify the remote device may also be a MAC address of the remote device (where the MAC address is set by the hardware device vendor), and/or the remote device IP address, etc.
  • the first indication information may also be other information used to identify the remote device.
  • the first indication information is carried in the first access network protocol layer 2 message, so that the relay device can distinguish the remote WE that sends the first access network protocol layer 2 message by using the first indication information.
  • the remote device WE generates a first access network protocol layer 2 message RRC connection Request message, in the Adapter layer, the Packet Data Convergence Protocol (PDCP) layer or the radio link control layer (Radio Link). Control, referred to as the RLC layer, adds its own ID, Temporary Mobile Subscriber Identity (TMSI) or International Mobile Subscriber Identity (IMSI), where TMSI has been initially attached to the WE. Used, and IMSI is used when initial attachment has not yet been made.
  • TMSI Temporary Mobile Subscriber Identity
  • IMSI International Mobile Subscriber Identity
  • the first access network protocol layer 2 message may be sent from the WE to the relay device through the BTlink between the WE and the relay device.
  • the first access network layer 2 message may be an RLC PDU, a MAC DPU, or a PDCP PDU.
  • the relay device generates a second access network protocol layer 2 message according to the first access network protocol layer 2 message, and sends the second access network protocol layer 2 message to the network side device.
  • the second access network protocol layer 2 message is used to request the network side device to establish the access network link.
  • the network side device will receive the second access network protocol layer 2 message sent by the relay device, where the second access network protocol layer 2 message is used to request the network side device to establish the network side device and the far Access network link between end devices.
  • the method before the generating, by the relay device, the second access network layer 2 message according to the first access network protocol layer 2 message, the method further includes:
  • the relay device acquires the first indication information or the terminal radio link information of the first access network layer 2 message, where the stub wireless link information includes a time domain for distinguishing the remote device or Frequency The domain physical information, the wireless link identifier used to distinguish the remote device, and the wireless link protocol layer entity identification information used to distinguish the remote device.
  • the relay device may also obtain other information that can distinguish the remote device.
  • the information for distinguishing the remote device is obtained before the relay device generates the second access network layer 2 message according to the first access network protocol layer 2 message correspondingly, so that the corresponding generated second access is obtained.
  • the protocol layer 2 message can also identify the remote device.
  • the second access network layer 2 message includes second indication information, where the second indication information is used to indicate to the network side device that the second access network layer 2 message corresponds to the far End device or indicating the second access network layer 2 message is used by the remote device to request the network side device to establish the access network link.
  • the second indication information includes a data type of the second access network layer 2 message and at least one of the following messages:
  • the identifier of the remote device the tip link identifier between the remote device and the relay device, and the relay protocol processing entity identifier corresponding to the remote device.
  • the stub link identifier refers to an identifier of a point-to-point communication link established between the remote device and the relay device, so that the far-end device that communicates with the relay device can be indicated by the stub link identifier.
  • the second indication information may further include other information that may identify the remote device or identify a link between the remote device and the relay device.
  • the data type of the second access network protocol layer 2 message is used to indicate the parsing mode used by the network side device to parse the second access network protocol layer 2 message.
  • the BT bottom layer of the relay UE correctly receives the first access network protocol layer 2 message RRC connection Request message, it is delivered to the Adapter layer according to the underlying PSM indication.
  • the Adapter layer records the TMSI and reads the RBID field to know that the content of the data packet is the content of the SRB0.
  • the relay UE when the relay UE receives the first access network layer 2 message of the remote device, and determines that the first access network layer 2 message is the SRB0 message, it can be known that the remote device wants to establish an access network with the eNB. Linking or restoring the access network link that failed to establish the failure, the relaying UE thus generates a second access network layer 2 message, and the second access network layer 2 message sets a container container, and the container includes the remote UE sending The content of the second access network layer 2 message. The relaying UE then sends the second access network layer 2 message to the network side device eNB to notify the network side device that a remote UE needs to be established. The access network link of the network side device.
  • the second access network layer 2 message is sent by using a wireless signaling bearer or a wireless data bearer between the relay device and the network side device, where the wireless signaling bearer or data bearer is used for sending
  • the function of the relay remote device is configured by the network side device.
  • the method before the sending the second access network layer 2 message to the network side device, the method further includes:
  • the access network layer 2 message is sent to the network side device.
  • the relay UE first sends a fourth radio signaling bearer SRB4 setup request or an initial WE request to the eNB, so that the network side device sends the SRB4 configuration information according to the SRB4 setup request or the initial WE request, and the relay UE according to the SRB4 configuration information.
  • Establishing SRB4 which is used to transmit a specific access network layer 2 message between the remote device and the network side device, where the specific access network layer 2 message indicates that the access network layer 2 message can be relayed to the UE and/or
  • the content of the network side device identification message is an RRC signaling message, and the RRC signaling message is used for link establishment maintenance between the remote device and the network side device.
  • the network side device carries, in the fourth radio signaling bearer configuration information, a Cell Radio Network Temming Identification List (CRNTIlist), where the CRNTIlist is used to relay the UE to the remote device. Assign the access network side identifier.
  • CRNTIlist Cell Radio Network Temming Identification List
  • the fourth wireless signaling bearer configuration information may be implemented by using the following code:
  • the method before the generating, by the relay device, the second access network layer 2 message, the method further includes:
  • the relaying UE allocates a cell radio network temporary identification CRNTI to the remote device according to the CRNTIlist configured by the network side device.
  • the relay UE notifies the remote device of the allocated CRNTI through the stub link.
  • the method further includes:
  • the relay UE directly forwards the first access network layer 2 message including the remote device identifier, and then the eNB discovers that the remote device identifier is included in the message after receiving the forwarding message, and therefore sends the fourth wireless
  • the signaling carries configuration information to the relay UE to establish SRB4 between the relay UE and the eNB.
  • the SRB0 message between the remote UE and the eNB can be transmitted on the SRB4.
  • the second access network layer 2 message may be an RLC PDU, a MAC DPU, or a PDCP PDU.
  • the network side device generates a third access network protocol layer 2 message, and sends the third access network protocol layer 2 message to the relay device to respond to the second access network protocol layer 2 message.
  • the third access network protocol layer 2 message includes radio bearer configuration information between the remote device and the network side device.
  • the relay device will receive the third access network protocol layer 2 message returned by the network side device in response to the second access network protocol layer 2 message, where the third access network protocol layer 2 message includes Radio bearer configuration information between the remote device and the network side device.
  • the third access network layer 2 message includes third indication information, where the third indication information is used to enable the relay device to determine the remote device corresponding to the radio bearer configuration information, to And causing the remote device to configure a radio bearer based on the radio bearer configuration information, and send an access network link completion message of the remote device and the network side device to the network side device.
  • the third indication information includes a data type of the second access network layer 2 message and at least one of the following messages:
  • the identifier of the remote device the tip link identifier between the remote device and the relay device, and the relay protocol processing entity identifier corresponding to the remote device.
  • the third indication information may also be another remote device that can enable the relay device to determine the radio bearer configuration information.
  • the third access network layer 2 message is sent by using a wireless signaling bearer or a wireless data bearer between the relay device and the network side device.
  • the eNB receives the second access network layer 2 message, and determines, according to the third indication information in the second access network layer 2 message, whether the second access network layer 2 message is an SRB0 message sent by the remote UE.
  • the RRC link is established or restored when the second access network layer 2 message is the SRB0 message sent by the remote UE.
  • the eNB first establishes an SRB0 processing entity, and then processes an RRC connection request message (that is, a second access network layer 2 message) sent by the remote UE, and generates an RRC connection setup, where the RRC connection setup message includes the remote end.
  • RRC connection request message that is, a second access network layer 2 message
  • the RRC connection setup message includes the remote end.
  • the RRC connection setup message includes the CRNTI of the remote WE.
  • the eNB continues to send the access network layer 2 entity belonging to the relay UE to generate the third access network layer 2 message.
  • the third access network layer 2 message may be an RLC PDU, a MAC DPU, or a PDCP PDU.
  • a domain of remote UEid may be added to the MAC PDU sent to the relay UE for transmitting the CRNTI.
  • the third access network layer 2 message may be transmitted from the network side device to the relay UE by using the radio bearer that can be used as a relay between the relay UE and the network side device in step S305.
  • the relay device generates a fourth access network protocol layer 2 message according to the third access network protocol layer 2 message, and sends the fourth access network protocol layer 2 message to the remote device.
  • the fourth access network protocol layer 2 message includes a cell temporary radio identifier CRNTI of the remote device.
  • the relay device acquires one or more cell temporary wireless identifiers from the network side device, so that the relay device allocates one of the one or more cell temporary wireless identifiers to the Remote device.
  • the relay device may first acquire multiple CRNTIs from the network side device (for example, an eNB). The description of step S305), so that the remote device can select from these allocated CRNTIs.
  • the relaying UE establishes a mapping relationship between the CRNTI and the BTlink, so that the fourth access network protocol layer 2 message corresponding to the CRINT may pass the CRINT corresponding to the CRINT.
  • BTlink is sent to the corresponding remote WE.
  • the Relay UE establishes an SRB1&2 message for the RB to transmit the WE.
  • the following code can be used to implement a DRB to transmit the SRB1&2 message of the remote WE.
  • two SRBs are established on the Relay UE, for example, SRB5, SRB6, corresponding to SRB1 and SRB2 for transmitting the remote WE.
  • the remote device receives the fourth access network protocol layer 2 message returned by the network side device, and establishes, between the remote device and the network side device, based on the fourth access network protocol layer 2 message. Access network link.
  • the fourth access network protocol layer 2 message is generated by the third access network protocol layer 2 message, and the third access network protocol layer 2 message includes the remote device and the The radio bearer configuration information between the network side devices. Establishing an access network link between the remote device and the network side device, so that the subsequent remote device and the network side device can communicate based on the link, but in the actual communication process, each message is relayed. The device transmits between the remote device on the network side device.
  • the fourth access network protocol layer 2 message includes a cell temporary wireless identifier of the remote device.
  • the remote device obtains its own identifier, that is, the CRNTI, on the network side device from the fourth access network information.
  • the remote WE after receiving the “RRC connection setup” message, the remote WE obtains the CRNTI, establishes a radio signaling bearer SRB between the remote UE and the eNB according to the SRB configuration information carried in the message, and generates “RRC connection setup complete”.
  • the message is sent to the eNB, and the data packet is transmitted by relaying a new Relay SRB between the UE and the eNB.
  • the "RRC connection setup complete” message carries the "attach request" message submitted by the NAS layer.
  • the remote device Before the remote device establishes an access network link with the network side device by using the relay device, the remote device first needs to select the access bearer link type.
  • step S301 the method further includes the steps of:
  • the non-access stratum NAS layer of the remote device obtains link selection result information according to the indication information or the AS layer of the remote device determines the link selection result according to the indication information.
  • the non-access stratum NAS layer of the remote device obtains the link according to the indication information. Selecting result information and transmitting the link selection result information to the access layer AS layer, so that the AS layer determines, according to the link selection result information, whether to establish with the network side device by using the relay device. Interlink network link; or,
  • the AS layer determines, according to the indication information, whether an access network link with the network side device is established by the relay device.
  • the indication information can reflect the data link requirement of the remote device
  • the manner in which the remote device establishes the link is determined by using the indication information, and the link selection result obtained by the determination manner accurately reflects the far
  • the access requirement of the end device is further determined by the AS layer according to the indication information, or the NAS layer obtains the link selection result according to the indication information and sends the result to the AS layer, thereby making the link selection mode more flexible. Therefore, it can further enhance the user's business experience.
  • the indication information includes at least one of the following: EMM registration information, internal setting information, communication entity layer status information, and data transmission request information.
  • the EMM registration information includes an EMM registration status or an EMM unregistered status
  • the internal setting information includes a power saving mode and a non-power saving mode
  • the communication entity layer status information includes an out of service area, an ECM registration status, and an ECM.
  • the data transmission request information includes QoS information, data type information
  • the data type information includes a voice caller, a voice call, and an emergency call.
  • the EMM registration information is the EMM unregistered state
  • the internal setting information is the power saving mode
  • the communication entity state information is the out of service area
  • the data type information is the voice caller
  • the data type information is the voice called, and the data type information is the emergency call; or
  • the data type information is the voice called, the voice called or the emergency call
  • the communication entity layer status information is the ECM registration status
  • the AS when the indication information includes an emergency call, a voice caller, or a voice call, the AS initiates establishment of two links at the same time, and one is wireless through the cell.
  • the module directly establishes an RRC link with the eNB of the cellular system, and the other is to find the relay UE through the D2D module (including LTE-D2D, BT, wifi), and at the same time, establish a relayed relay link.
  • the NAS layer of the remote WE selects the bearer link that sends the NAS signaling attach request. Is the bearer link through the relay device.
  • the NAS layer of the remote WE sends the indication information to the AS layer: the bearer link type indication is a relay bearer; the remote WE then sends the attach request message generated by the NAS layer to the AS layer entity, for example, the RRC layer.
  • the AS layer entity selects to establish an access network link with the network side device through the relay device.
  • the AS layer selects the cellular radio module to establish an RRC link with the eNB directly.
  • the threshold may be set internally by the UE or may be obtained from the currently camped network.
  • the first access network protocol layer 2 message requested by the remote device to the network side device is forwarded by the relay device, and the first access network protocol layer 2 message is correspondingly generated to generate the second message.
  • Accessing the network protocol layer 2 message and sending the message to the network side device so that the network side device generates a third access network protocol layer 2 message according to the second access network protocol layer 2 message and sends the message to the relay device, where the third interface
  • the network protocol layer 2 message carries the radio bearer configuration information between the remote device and the network side device, and the relay device further generates the fourth access network protocol layer 2 message corresponding to the third access network protocol layer 2 message.
  • the remote device sends the access network link between the remote device and the network device based on the radio bearer configuration information.
  • the access network link between the remote device and the network side device is established by the relay device, so that when the remote device is inconvenient to directly communicate with the network side device, the network device can be successfully accessed to improve network access flexibility. Sex. For example, when the remote device is out of the coverage of the network side device, the remote device can establish an access network link with the network side device through the relay device.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, and reduces the link establishment of the remote device. The delay also reduces the transmission of signaling by the remote device, thereby actually saving power consumption of the remote device.
  • FIG. 4 is a schematic flowchart of another method for establishing a link according to an embodiment of the present invention.
  • the method is based on: pre-storing a stub link between a remote device and a relay device in a network side device.
  • the mapping relationship for example, after the remote device fails to establish an access network link with the network side device through the relay device, or the remote device successfully establishes connection with the network side device through the relay device at a previous moment. After the link is disconnected, the link is disconnected (for example, the relay device switches the cell).
  • the network device can actively request the relay device.
  • the network side may include the following steps:
  • the network side device sends a CRNTI to the relay device, so that the relay device allocates the CRNTI to the remote device.
  • the network side device first allocates a CRNTI to the remote device before actively sending the connection to the remote device to establish an access network link with the remote device.
  • the network side device allocates one or more cell temporary wireless identifiers to the relay device, so that the relay device sends the one or more cell temporary wireless identifiers.
  • One of the ones assigned to the remote device is one of the ones assigned to the remote device.
  • the network side device sends an access network protocol layer 2 message to the relay device.
  • the access network protocol layer 2 message is used to establish an access network link between the network side device and the remote device, where the access network protocol layer 2 message includes the remote device and the network side. Radio bearer configuration information between devices.
  • the relay device when the network side device sends the access network protocol layer 2 message to the relay device, the relay device receives the access network protocol layer 2 message sent by the network side device.
  • the access network protocol layer 2 message includes fifth indication information, and the fifth indication information
  • the remote device is configured to enable the remote device to determine the remote device corresponding to the radio bearer configuration information, so that the remote device configures a radio bearer based on the radio bearer configuration information, and sends the remote device and the The access network link completion message of the network side device is sent to the network side device.
  • the fifth indication information includes at least one of the following messages:
  • the identifier of the remote device the tip link identifier between the remote device and the relay device, and the relay protocol processing entity identifier corresponding to the remote device.
  • the access network protocol layer 2 message is sent by using a wireless signaling bearer or a wireless data bearer between the relay device and the network side device.
  • the access network protocol layer 2 message is an RLC PDU, a MAC DPU, or a PDCP PDU.
  • the access network protocol layer 2 message is sent by using a wireless signaling bearer or a wireless data bearer between the relay device and the network side device.
  • the method further includes:
  • the network side device acquires a correspondence between the relay device and the remote device, where the correspondence is used to instruct the relay device to perform wireless communication with the remote device.
  • the relay device sends the radio bearer configuration to the remote device by using a radio link between the relay device and the remote device according to the access network protocol layer 2 message.
  • the remote device receives the access network protocol layer 2 message and establishes an access network link between the remote device and the network side device based on the access network protocol layer 2 message.
  • the network side device actively sends an access network protocol layer 2 message to the relay device, where the message of the access network protocol layer 2 includes the radio bearer configuration between the remote device and the network side device. And the relay device forwards the access network protocol layer 2 message to the remote device, so that the remote device establishes an access network link with the network side device according to the radio bearer configuration information.
  • the network side device actively requests to establish an access network link with the remote device through the relay device, and finally the remote device can establish an access network link with the network side device through the relay device, so that the remote device When it is inconvenient to communicate directly with the network side device, it can also successfully access the network side device to improve network access flexibility. For example, when the remote device is out of the coverage of the network side device, the remote device can establish an access network link with the network side device through the relay device.
  • the access network between the remote device and the network side device is established through the relay device
  • the link allows the remote device to communicate with the relay device only, reducing the transmit power of the remote device and saving the power of the remote device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, thereby reducing the link establishment delay of the remote device and reducing the far distance. The signaling of the end device is transmitted thereby actually saving power consumption of the remote device.
  • FIG. 5 is a schematic structural diagram of a relay device according to an embodiment of the present invention. As shown in FIG. 5, the relay device 500 includes:
  • the receiving unit 510 is configured to receive, by using a stub link between the relay device and the remote device, a first access network protocol layer 2 message sent by the remote device, where the first access network protocol layer 2 The message is used to indicate that the remote device requests to establish an access network link between the network side device and the remote device;
  • the generating unit 520 is configured to generate, according to the first access network protocol layer 2 message, a second access network protocol layer 2 message, and send the second access network protocol layer 2 message to the network side device,
  • the second access network protocol layer 2 message is used to request the network side device to establish the access network link;
  • the receiving unit 510 is further configured to: receive a third access network protocol layer 2 message returned by the network side device in response to the second access network protocol layer 2 message, where the third access network protocol layer 2
  • the message includes radio bearer configuration information between the remote device and the network side device;
  • the generating unit 510 is further configured to generate a fourth access network protocol layer 2 message according to the third access network protocol layer 2 message and send the fourth access network protocol layer 2 message to the far End device.
  • the first access network protocol layer 2 message includes first indication information, where the first indication information is used to identify the remote device, and the first indication information includes at least one of the following information:
  • the identifier of the remote device The identifier of the remote device, the service type of the remote device, the group attribute of the remote device, and the device type or device level of the remote device.
  • the relay device 500 further includes:
  • the obtaining unit 530 is configured to acquire the first indication information or the terminal radio link information of the first access network protocol layer 2 message, where the stub wireless link information includes a time for distinguishing the remote device Domain or frequency domain physical information, a wireless link identifier used to distinguish the remote device, and wireless link protocol layer entity identification information used to distinguish the remote device.
  • the second access network protocol layer 2 message includes second indication information, where the second indication The information is used to indicate to the network side device that the remote device corresponding to the second access network protocol layer 2 message or the second access network protocol layer 2 message is used for the remote device request
  • the network side device establishes the access network link.
  • the second indication information includes a data type of the second access network protocol layer 2 message and at least one of the following messages:
  • the identifier of the remote device the tip link identifier between the remote device and the relay device, and the relay protocol processing entity identifier corresponding to the remote device.
  • the third access network protocol layer 2 message includes third indication information, where the third indication information is used to enable the relay device to determine the remote device corresponding to the radio bearer configuration information.
  • the third indication information includes a data type of the second access network protocol layer 2 message and at least one of the following messages:
  • the identifier of the remote device the tip link identifier between the remote device and the relay device, and the relay protocol processing entity identifier corresponding to the remote device.
  • the second access network protocol layer 2 message and/or the third access network protocol layer 2 message uses a wireless signaling bearer or a wireless data bearer between the relay device and the network side device. Send it.
  • the fourth access network protocol layer 2 message includes a cell temporary wireless identifier of the remote device.
  • the acquiring unit is further configured to: acquire one or more cell temporary wireless identifiers from the network side device, so that the relay device allocates one of the one or more cell temporary wireless identifiers To the remote device.
  • the first access network protocol layer 2 message is an RLC PDU, a MAC DPU, or a PDCP PDU;
  • the second access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU;
  • the third access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU;
  • the fourth access network protocol layer 2 message is an RLC PDU, a MAC DPU, or a PDCP PDU.
  • the relay device further includes:
  • the sending unit 540 is configured to send a fourth radio signaling bearer setup request to the network side device.
  • the receiving unit 510 is further configured to receive the fourth wireless signaling returned by the network side device Carrying configuration information, so that the relay device sends the second access network protocol layer 2 message to the network side device by using a fourth radio signaling bearer generated based on the fourth radio signaling bearer configuration information.
  • the receiving unit 510 is further configured to:
  • the access network link between the remote device and the network side device is established by the relay device, so that the remote device can successfully access the network side device when it is inconvenient to directly communicate with the network side device.
  • the relay device improves network access flexibility.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, thereby reducing the link establishment delay of the remote device and reducing the far distance. The signaling of the end device is transmitted thereby actually saving power consumption of the remote device.
  • the relay device 500 is presented in the form of a unit.
  • a "unit” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the functionality described above. .
  • ASIC application-specific integrated circuit
  • FIG. 6 is a schematic structural diagram of another relay device according to an embodiment of the present invention. As shown in FIG. 6, the relay device 600 includes:
  • the processor 603 may also be a controller, and is represented as "controller/processor 603" in FIG.
  • the relay device 600 may further include a modem processor 605.
  • the modem processor 605 may include an encoder 606, a modulator 607, a decoder 608, and a demodulator 605.
  • the transmitter 601 conditions (eg, analog transforms, filters, amplifies, and upconverts, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the base station described in the above embodiments. .
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment.
  • Receiver 602 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples.
  • encoder 606 receives the traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 607 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples.
  • Demodulator 609 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 608 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the relay device 600.
  • Encoder 606, modulator 607, demodulator 609, and decoder 608 may be implemented by a composite modem processor 605. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems). It should be noted that when the relay device 600 does not include the modem processor 605, the above functions of the modem processor 605 may also be completed by the processor 603.
  • the processor 603 controls and manages the actions of the relay device 600 for performing the processing performed by the relay device 600 in the above embodiment of the present invention.
  • the processor 603 is further configured to perform the corresponding steps in the foregoing method embodiments, and/or other processes of the technical solutions described herein.
  • the relay device 600 may further include a memory 604 for storing program codes and data for the relay device 600.
  • FIG. 7 is a schematic structural diagram of a network side device according to an embodiment of the present invention.
  • the network side device 700 includes:
  • the receiving unit 710 is configured to receive a second access network protocol layer 2 message sent by the relay device, where the second access network protocol layer 2 message is used to request the network side device to establish the network side device and the remote end Access network link between devices;
  • the sending unit 720 is configured to send, by the relay device, a third access network protocol layer 2 message in response to the second access network protocol layer 2 message, where the third access network protocol layer 2 message includes the Radio bearer configuration information between the remote device and the network side device.
  • the third access network protocol layer 2 message includes third indication information, where the third indication The information is used to enable the relay device to determine the remote device corresponding to the radio bearer configuration information.
  • the third indication information includes a data type of the second access network protocol layer 2 message and at least one of the following messages:
  • the identifier of the remote device the tip link identifier between the remote device and the relay device, and the relay protocol processing entity identifier corresponding to the remote device.
  • the second access network protocol layer 2 message and/or the third access network protocol layer 2 message uses wireless signaling bearer or wireless data between the relay device and the network side device.
  • the bearer is sent.
  • the sending unit 720 is further configured to:
  • the second access network protocol layer 2 message is an RLC PDU, a MAC DPU, or a PDCP PDU;
  • the third access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU.
  • the access network link between the remote device and the network side device is established by the relay device, so that the remote device can successfully access the network side device when it is inconvenient to directly communicate with the network side device.
  • the relay device improves network access flexibility.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, thereby reducing the link establishment delay of the remote device and reducing the far distance. The signaling of the end device is transmitted thereby actually saving power consumption of the remote device.
  • the network side device 700 is presented in the form of a unit.
  • a "unit” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the functionality described above. .
  • ASIC application-specific integrated circuit
  • FIG. 8 is a schematic structural diagram of another network side device according to an embodiment of the present invention.
  • the network side device 800 includes:
  • the processor 802 can also be a controller, and is represented as "controller/processor 802" in FIG.
  • the transmitter/receiver 801 is configured to support transmission and reception of information between the network side device and the terminal in the foregoing embodiment, and to support radio communication between the terminal and other terminals.
  • the processor 802 performs various functions for communicating with a terminal. On the uplink, an uplink signal from the terminal is received via an antenna, demodulated by a receiver 801 (e.g., demodulated into a baseband signal), and further processed by processor 802 to recover the terminal. Send to business data and signaling information.
  • traffic data and signaling messages are processed by processor 802 and modulated by transmitter 801 (e.g., modulating a baseband signal into a high frequency signal) to produce a downlink signal that is transmitted to the terminal via an antenna.
  • transmitter 801 e.g., modulating a baseband signal into a high frequency signal
  • the processor 802 is further configured to perform the corresponding steps in the foregoing method embodiments, and/or other processes of the technical solutions described in the embodiments of the present invention.
  • the network side device 800 may further include a memory 803 for storing program codes and data of the network side device 500. Further, the network side device may further include a communication unit 804.
  • the communication unit 804 is configured to support the network side device to communicate with other network entities (for example, network devices in the core network, etc.). For example, in the LTE system, the communication unit 804 may be an S1-U interface for supporting the network side device to communicate with a Serving Gateway (SGW); or the communication unit 804 may also be an S1-MME interface. It is used to support the network side device to communicate with a Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • FIG. 8 only shows a simplified design of the network side device 800.
  • the network side device 800 may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all the network side devices that can implement the embodiments of the present invention are in the embodiment of the present invention. Within the scope of protection.
  • FIG. 9 is a schematic structural diagram of a remote device according to an embodiment of the present invention.
  • the remote device 900 includes:
  • the sending unit 910 is configured to send, by using a stub link between the remote device and the relay device, a first access network protocol layer 2 message to the relay device, where the first access network protocol layer 2 message Used to indicate that the remote device requests to establish an access network link between the network side device and the remote device;
  • the receiving unit 920 is configured to receive a fourth access network protocol layer 2 message returned by the network side device, where the fourth access network protocol layer 2 message is generated by a third access network protocol layer 2 message, where The third access network protocol layer 2 message includes radio bearer configuration information between the remote device and the network side device.
  • the first access network protocol layer 2 message includes first indication information, where the first indication information is used to identify the remote device, and the first indication information includes at least one of the following information:
  • the identifier of the remote device The identifier of the remote device, the service type of the remote device, the group attribute of the remote device, and the device type or device level of the remote device.
  • the remote device 900 further includes:
  • the obtaining unit 930 is configured to acquire, by using the fourth access network protocol layer 2 message, a cell temporary wireless identifier of the remote device, where the fourth access network protocol layer 2 message includes the cell temporary wireless identifier.
  • the first access network protocol layer 2 message is an RLC PDU, a MAC DPU, or a PDCP PDU;
  • the third access network protocol layer 2 message is an RLC PDU, a MAC DPU or a PDCP PDU;
  • the fourth access network protocol layer 2 message is an RLC PDU, a MAC DPU, or a PDCP PDU.
  • the access network link between the remote device and the network side device is established by the relay device, so that the remote device can successfully access the network side device when it is inconvenient to directly communicate with the network side device.
  • the relay device improves network access flexibility.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, thereby reducing the link establishment delay of the remote device and reducing the far distance. The signaling of the end device is transmitted thereby actually saving power consumption of the remote device.
  • the remote device 900 is presented in the form of a unit.
  • the "unit” herein may refer to an application-specific integrated circuit (ASIC), which performs one Processors and memories of multiple software or firmware programs, integrated logic circuits, and/or other devices that provide the above functionality.
  • ASIC application-specific integrated circuit
  • FIG. 10 is a schematic structural diagram of another remote device according to an embodiment of the present invention. As shown in FIG. 10, the remote device 1000 includes:
  • the processor 1003 may also be a controller, and is represented as "controller/processor 1003" in FIG.
  • the relay device 1000 may further include a modem processor 1005.
  • the modem processor 1005 may include an encoder 1006, a modulator 1007, a decoder 1008, and a demodulator 1005.
  • the transmitter 1001 conditions (eg, analog transforms, filters, amplifies, and upconverts, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the base station described in the above embodiments. .
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment.
  • Receiver 1002 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples.
  • encoder 1006 receives traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 1007 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples.
  • Demodulator 1009 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 1008 processes (e.g., deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages that are sent to the relay device 1000.
  • Encoder 1006, modulator 1007, demodulator 1009, and decoder 1008 may be implemented by a composite modem processor 1005. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems). It should be noted that when the remote device 1000 does not include the modem processor 1005, the foregoing functions of the modem processor 1005 may also be completed by the processor 1003.
  • the processor 1003 controls and manages the actions of the remote device 1000 for performing the processing performed by the remote device 1000 in the foregoing embodiment of the present invention.
  • the processor 1003 is further configured to perform the corresponding steps in the foregoing method embodiments, and/or other processes of the technical solutions described in the present application.
  • the remote device 1000 may further include a memory 1004 for storing program codes and data for the remote device 1000.
  • FIG. 11 is a schematic structural diagram of a relay device according to an embodiment of the present invention. As shown in FIG. 11, the relay device 1100 includes:
  • the receiving unit 1110 is configured to receive an access network protocol layer 2 message sent by the network side device, where the access network protocol layer 2 message is used to establish an access network link between the network side device and the remote device, where The access network protocol layer 2 message includes radio bearer configuration information between the remote device and the network side device;
  • the sending unit 1120 is configured to send, by using the access network protocol layer 2 message, the radio bearer configuration to the remote device by using a radio link between the relay device and the remote device.
  • the access network protocol layer 2 message includes fifth indication information, where the fifth indication information is used to enable the relay device to determine the remote device corresponding to the radio bearer configuration information.
  • the fifth indication information includes at least one of the following messages:
  • the identifier of the remote device the tip link identifier between the remote device and the relay device, and the relay protocol processing entity identifier corresponding to the remote device.
  • the access network protocol layer 2 message is sent by using a wireless signaling bearer or a wireless data bearer between the relay device and the network side device.
  • the access network protocol layer 2 message is an RLC PDU, a MAC DPU, or a PDCP PDU.
  • the receiving unit 1110 is further configured to acquire one or more cell temporary wireless identifiers from the network side device, so that the relay device allocates one of the one or more cell temporary wireless identifiers. To the remote device.
  • the access network link between the remote device and the network side device is established by the relay device, so that the remote device can successfully access the network side device when it is inconvenient to directly communicate with the network side device.
  • the relay device improves network access flexibility.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the network side device establishes an access network with the remote device through the relay device
  • the link enables the remote device to quickly establish a link with the network device, reduce the link setup delay of the remote device, and reduce the signaling of the remote device, thereby actually saving the power consumption of the remote device.
  • the relay device 1100 is presented in the form of a unit.
  • a "unit” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the functionality described above. .
  • ASIC application-specific integrated circuit
  • FIG. 12 is a schematic structural diagram of another relay device according to an embodiment of the present invention. As shown in FIG. 12, the relay device 1200 includes:
  • the processor 1203 may also be a controller, and is represented as "controller/processor 1203" in FIG.
  • the relay device 1200 may further include a modem processor 1205.
  • the modem processor 1205 may include an encoder 1206, a modulator 1207, a decoder 1208, and a demodulator 1205.
  • transmitter 1201 conditions (eg, analog transforms, filters, amplifies, and upconverts, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the base station described in the above embodiments. .
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment.
  • Receiver 1202 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples.
  • encoder 1206 receives the traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 1207 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples.
  • Demodulator 1209 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 1208 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the relay device 1200.
  • Encoder 1206, modulator 1207, demodulator 1209, and decoder 1208 may be implemented by a composite modem processor 1205. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems). It should be noted that when the relay device 1200 does not include a modem processor At 1205, the above functions of the modem processor 1205 may also be performed by the processor 1203.
  • the processor 1203 controls and manages the actions of the relay device 1200 for performing the processing performed by the relay device 1200 in the foregoing embodiment of the present invention.
  • the processor 1203 is further configured to perform the corresponding steps in the foregoing method embodiments, and/or other processes of the technical solutions described in the present application.
  • the relay device 1200 may further include a memory 1204 for storing program codes and data for the relay device 1200.
  • FIG. 13 is a schematic structural diagram of a network side device according to an embodiment of the present invention. As shown in FIG. 13, the network side device 1300 includes:
  • the sending unit 1310 is configured to send an access network protocol layer 2 message to the relay device, where the access network protocol layer 2 message is used to establish an access network link between the network side device and the remote device, where The access network protocol layer 2 message includes radio bearer configuration information between the remote device and the network side device.
  • the access network protocol layer 2 message includes fifth indication information, where the fifth indication information is used to enable the relay device to determine the remote device corresponding to the radio bearer configuration information.
  • the fifth indication information includes at least one of the following messages:
  • the identifier of the remote device the tip link identifier between the remote device and the relay device, and the relay protocol processing entity identifier corresponding to the remote device.
  • the access network protocol layer 2 message is sent by using a wireless signaling bearer or a wireless data bearer between the relay device and the network side device.
  • the access network protocol layer 2 message is an RLC PDU, a MAC DPU, or a PDCP PDU.
  • the sending unit 1310 is further configured to:
  • the network side device 1300 further includes:
  • the obtaining unit 1320 is configured to obtain a correspondence between the relay device and the remote device, where the correspondence is used to instruct the relay device to perform wireless communication with the remote device.
  • the access network link between the remote device and the network side device is established by the relay device, so that the remote device can successfully access the network when it is inconvenient to directly communicate with the network side device.
  • Network side equipment to improve network access flexibility.
  • the remote device since the access network link between the remote device and the network side device is established through the relay device, the remote device only needs to physically communicate with the relay device, reducing the transmit power of the remote device, and saving the remote end. The amount of power in the device.
  • the remote device since the network side device establishes an access network link with the remote device through the relay device, the remote device quickly establishes a link with the network device, thereby reducing the link establishment delay of the remote device and reducing the far distance. The signaling of the end device is transmitted thereby actually saving power consumption of the remote device.
  • the network side device 1300 is presented in the form of a unit.
  • a "unit” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the functionality described above. .
  • ASIC application-specific integrated circuit
  • FIG. 14 is a schematic structural diagram of another network side device according to an embodiment of the present invention.
  • the network side device 1400 includes:
  • the processor 1402 may also be a controller, and is represented as "controller/processor 1402" in FIG.
  • the transmitter/receiver 1401 is configured to support transmission and reception of information between the network side device and the terminal in the above embodiment, and to support radio communication between the terminal and other terminals.
  • the processor 1402 performs various functions for communicating with the terminal.
  • On the uplink an uplink signal from the terminal is received via an antenna, demodulated by the receiver 1401 (e.g., demodulated into a baseband signal), and further processed by the processor 1402 to recover the terminal. Send to business data and signaling information.
  • the traffic data and signaling messages are processed by the processor 1402 and modulated by the transmitter 1401 (e.g., modulating the baseband signal into a high frequency signal) to generate a downlink signal and transmitted to the terminal via the antenna.
  • the processor 1402 is further configured to perform the corresponding steps in the foregoing method embodiments, and/or other processes of the technical solutions described in the embodiments of the present invention.
  • the network side device 1400 may further include a memory 1403 for storing Program code and data of the network side device 500. Further, the network side device may further include a communication unit 1404.
  • the communication unit 1404 is configured to support the network side device to communicate with other network entities (for example, network devices in the core network, etc.).
  • the communication unit 1404 can be an S1-U interface for supporting the network side device to communicate with a Serving Gateway (SGW); or the communication unit 1404 can also be an S1-MME interface. It is used to support the network side device to communicate with a Mobility Management Entity (MME).
  • SGW Serving Gateway
  • MME Mobility Management Entity
  • FIG. 14 only shows a simplified design of the network side device 1400.
  • the network side device 1400 may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all the network side devices that can implement the embodiments of the present invention are in the embodiment of the present invention. Within the scope of protection.
  • FIG. 15 is a schematic structural diagram of a remote device according to an embodiment of the present invention. As shown in FIG. 15, the remote device 1500 includes:
  • the sending unit 1510, the non-access stratum NAS layer of the remote device obtains the link selection result information according to the indication information, and sends the link selection result information to the access layer AS layer, so that the AS layer according to the
  • the link selection result information determines whether an access network link with the network side device is established through the relay device; or
  • the determining unit 1520 is configured to determine, by the AS layer, whether to establish an access network link with the network side device by using the relay device according to the indication information.
  • the indication information includes at least one of the following:
  • EMM registration information internal setting information, communication entity layer status information, and data transmission request information.
  • the link selection result is determined by the AS layer according to the indication information, or the NAS layer obtains the link selection result according to the indication information and sends the result to the AS layer, so that the link selection mode is more flexible, and thus can further Improve the user's business experience.
  • the remote device 1500 is presented in the form of a unit.
  • a "unit” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the functionality described above. .
  • ASIC application-specific integrated circuit
  • FIG. 16 is a schematic structural diagram of another remote device according to an embodiment of the present invention.
  • the remote device 1600 includes:
  • the processor 1603 may also be a controller, and is represented as "controller/processor 1603" in FIG.
  • the relay device 1600 may further include a modem processor 1605.
  • the modem processor 1605 may include an encoder 1606, a modulator 1607, a decoder 1608, and a demodulator 1605.
  • the transmitter 1601 conditions (eg, analog transforms, filters, amplifies, upconverts, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the base station described in the above embodiments. .
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment.
  • Receiver 1602 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples.
  • encoder 1606 receives the traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 1607 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples.
  • Demodulator 1609 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 1608 processes (e.g., deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages that are sent to the relay device 1600.
  • Encoder 1606, modulator 1607, demodulator 1609, and decoder 1608 may be implemented by a composite modem processor 1605. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems). It should be noted that when the relay device 1600 does not include the modem processor 1605, the above functions of the modem processor 1605 can also be completed by the processor 1603.
  • the processor 1603 controls and manages the actions of the relay device 1600 for performing the processing performed by the relay device 1600 in the embodiment of the present invention described above.
  • the processor 1603 is also configured to perform the corresponding steps in the foregoing method embodiments, and/or other processes of the technical solutions described herein.
  • the relay device 1600 may further include a memory 1604 for storing program codes and data for the relay device 1600.
  • the embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium can store a program, and the program includes some or all of the steps of the transmission method of any quality parameter described in the foregoing method embodiments.
  • the disclosed apparatus may be implemented in other ways.
  • 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 may be Integrate 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, and may be electrical or otherwise.
  • 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 purpose of the solution of the embodiment.
  • 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. Based on such understanding, the technical solution of the present invention is essential or the part contributing to the prior art or the entire technical solution.
  • the portion or portion may be embodied in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, server or network device, etc.) to perform various embodiments of the present invention. All or part of the steps of the method described.
  • the foregoing storage medium includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like. .

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Abstract

本发明实施例公开了一种链接建立方法及相关设备，所述方法包括：中继设备通过中继设备与远端设备之间的末梢链路接收远端设备发送的第一接入网协议层2消息；根据第一接入网协议层2消息对应生成第二接入网协议层2消息并将所述第二接入网协议层2消息发送给网络侧设备；接收网络侧设备响应第二接入网协议层2消息而返回的第三接入网协议层2消息；根据第三接入网协议层2消息对应生成第四接入网协议层2消息并将第四接入网协议层2消息发送给所述远端设备。通过中继设备建立远端设备与网络侧设备之间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网络侧设备，提高网络接入灵活性。

Description

一种链接建立方法及相关设备 技术领域
本发明涉及通信技术领域，具体涉及一种链接建立方法及相关设备。
背景技术
在网络通信时代中，用户终端，例如可穿戴设备(Wearable equipment，简称WE)等都希望可以接入网络，从而可以获得更多的网络服务，为用户提供更多的功能。
目前，终端在接入网络时，需要在签约的网络中进行附着attach，在attach完成之后获得网络临时标识，建立一个终端到网络侧设备的初始承载。但是在某些场景下，终端不方便直接与网络侧设备建立初始承载，比如当终端处于提供网络服务的网络侧设备的覆盖范围外时，此时终端无法直接连接到该网络侧设备上，从而终端无法获得网络侧设备提供的网络服务。
发明内容
本发明实施例提供了一种链接建立方法及相关设备，可以使远端终端通过中继设备建立到网络侧设备的接入网链接，提高网络接入灵活性。
第一方面，本发明实施例提供了一种链接建立方法，该方法包括：中继设备通过中继设备与远端设备之间的末梢链路接收远端设备发送的第一接入网协议层2消息，该第一接入网协议层2消息用于表示远端设备请求建立网络侧设备与远端设备之间的接入网链接；中继设备根据第一接入网协议层2消息对应生成第二接入网协议层2消息并将该第二接入网协议层2消息发送给网络侧设备，其中，第二接入网协议层2消息用于请求所述网络侧设备建立接入网链接；然后中继设备再接收网络侧设备响应该第二接入网协议层2消息而返回的第三接入网协议层2消息，其中，第三接入网协议层2消息包括远端设备与网络侧设备之间的无线承载配置信息；最后中继设备再根据该第三接入网协议层2消息对应生成第四接入网协议层2消息并将该第四接入网协议层2消息发送给远端设备以建立远端设备与网络侧设备之间的接入网链接。
本发明实施例提供的方案中，通过中继设备建立远端设备与网络侧设备之 间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网络侧设备，提高网络接入灵活性。例如，当远端设备处于网络侧设备的覆盖范围外时，使远端设备可通过中继设备建立与网络侧设备之间的接入网链接。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
在一个可能的设计中，该第一接入网协议层2消息包括第一指示信息，该第一指示信息用于标识远端设备，该第一指示信息包括以下至少一种信息：
远端设备的标识、远端设备的业务类型、远端设备的组属性以及远端设备的设备类型或者设备等级。通过在第一接入网协议层2消息中携带第一指示信息，从而使得中继设备可以通过该第一指示信息区分发送该第一接入网协议层2消息的远端设备。
在一个示例中，第一指示信息可以是该远端设备的MAC地址(其中，该MAC地址是硬件设备商出厂是设置的)，和/或者该远端设备的IP地址等。
在一个可能的设计中，中继设备根据第一接入网协议层2消息对应生成第二接入网协议层2消息之前，中继设备还获取第一接入网协议层2消息的第一指示信息或末梢无线链路信息，其中，末梢无线链路信息包括用于区分远端设备的时域或频域物理信息、用于区分远端设备的无线链路标识、用于区分远端设备的无线链路协议层实体标识信息。从而使得对应生成的第二接入协议层2消息也能标识远端设备。
在一个可能的设计中，该第二接入网协议层2消息包括第二指示信息，该第二指示信息用于给网络侧设备指示第二接入网协议层2消息对应的远端设备或指示第二接入网协议层2消息是用于远端设备请求网络侧设备建立该接入网链接。
在一个可能的设计中，该第二指示信息包括第二接入网协议层2消息的数 据类型以及以下消息中的至少一种：
远端设备的标识、远端设备与中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。通过在第二接入网协议层2消息中添加第二指示信息，使得网络侧设备可通过该第二指示消息识别请求建立接入网链接的远端设备。
在一个可能的设计中，该第三接入网协议层2消息包括第三指示信息，该第三指示信息用于使中继设备确定无线承载配置信息对应的远端设备，从而中继设备在接收到网络侧返回的无线承载配置时，能根据第三指示消息确定远端设备。
在一个可能的设计中，该第三指示信息包括第二接入网协议层2消息的数据类型以及以下消息中的至少一种：
远端设备的标识、远端设备与中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。上述标识均可唯一标识远端设备，所以通过上述标识可确定远端设备。
在一个可能的设计中，该第二接入网协议层2消息和/或第三接入网协议层2消息使用中继设备与网络侧设备之间的无线信令承载或无线数据承载进行发送。
在一个可能的设计中，该第四接入网协议层2消息包括远端设备的小区临时无线标识。
在一个可能的设计中，中继设备从网络侧设备获取一个或多个小区临时无线标识，以使中继设备将该一个或多个小区临时无线标识中的一个分配给远端设备。从而可实现中继设备主动从网络侧设备获取小区临时无线标识，使远端设备通过中继设备接入网络侧设备的实现过程更灵活。
在一个示例中，中继UE通过末梢链路将分配的小区临时无线标识通知远端设备。
在一个可能的设计中，该第一接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；该第二接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；该第三接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；该第四接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU。通过不 同的消息类型来发送，使得消息的发送方式更为灵活。
在一个可能的设计中，中继设备将第二接入网协议层2消息发送给网络侧设备之前，中继设备向网络侧设备发送第四无线信令承载建立请求；然后中继设备再接收网络侧设备返回的第四无线信令承载配置信息以使中继设备通过基于该第四无线信令承载配置信息生成的第四无线信令承载将第二接入网协议层2消息发送给网络侧设备。通过首先建立第四无线信令承载，从而后续的第二接入网协议层2消息可通过该第四无线信令承载发送。
在另一个可能的设施中，中继设备将第二接入网协议层2消息发送给网络侧设备之前，中继设备接收网络侧设备响应第二接入网协议层2消息而返回的第四无线信令承载配置信息。通过在第二接入网协议层2消息发送的同时，网络侧设备返回第四无线信令承载配置信息，而建立第四无线信令承载，第四无线信令承载建立灵活。
第二方面，本发明实施例提供了一种链接建立方法，该方法包括：网络侧设备接收中继设备发送的第二接入网协议层2消息，该第二接入网协议层2消息用于请求网络侧设备建立网络侧设备与远端设备之间的接入网链接；网络侧设备再向中继设备发送第三接入网协议层2消息以响应第二接入网协议层2消息，其中，第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息。
本发明实施例提供的方案中，通过中继设备建立远端设备与网络侧设备之间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网络侧设备，提高网络接入灵活性。例如，当远端设备处于网络侧设备的覆盖范围外时，使远端设备可通过中继设备建立与网络侧设备之间的接入网链接。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
在一个可能的设计中，该第三接入网协议层2消息包括第三指示信息，其中，第三指示信息用于使中继设备确定无线承载配置信息对应的远端设备。从而中继设备在接收到网络侧返回的无线承载配置时，能根据第三指示消息确定远端设备。
在一个可能的设计中，该第三指示信息包括第二接入网协议层2消息的数据类型以及以下消息中的至少一种：
远端设备的标识、远端设备与中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。上述标识均可唯一标识远端设备，所以通过上述标识可确定远端设备。
在一个可能的设计中，该第二接入网协议层2消息和/或第三接入网协议层2消息使用中继设备与网络侧设备之间的无线信令承载或无线数据承载进行发送。
在一个可能的设计中，网络侧设备向中继设备发送一个或多个小区临时无线标识，以使中继设备将该一个或多个小区临时无线标识中的一个分配给所述远端设备。从而可成功建立远端设备与网络侧设备之间的接入网链接。
在一个可能的设计中，该第二接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；该第三接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU。通过不同的消息类型来发送，使得消息的发送方式更为灵活。
第三方面，本发明实施例提供了一种链接建立方法，该方法包括：远端设备通过远端设备与中继设备之间的末梢链路向中继设备发送第一接入网协议层2消息，该第一接入网协议层2消息用于表示远端设备请求建立网络侧设备与远端设备之间的接入网链接；远端设备接收网络侧设备返回的第四接入网协议层2消息，该第四接入网协议层2消息由第三接入网协议层2消息对应生成，其中，该第三接入网协议层2消息包括远端设备与网络侧设备之间的无线承载配置信息。
本发明实施例提供的方案中，通过中继设备建立远端设备与网络侧设备之间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网络侧设备，提高网络接入灵活性。例如，当远端设备处于网络侧设备的覆盖范围外时，使远端设备可通过中继设备建立与网络侧设备之间的接入 网链接。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
在一个可能的设计中，该第一接入网协议层2消息包括第一指示信息，该第一指示信息用于标识远端设备，该第一指示信息包括以下至少一种信息：
远端设备的标识、远端设备的业务类型、远端设备的组属性以及远端设备的设备类型或者设备等级。通过在第一接入网协议层2消息中携带第一指示信息，从而使得中继设备可以通过该第一指示信息区分发送该第一接入网协议层2消息的远端设备。
在一个可能的设计中，远端设备通过第四接入网协议层2消息获取远端设备的小区临时无线标识，该第四接入网协议层2消息包括小区临时无线标识。通过远端设备主动获取远端设备的小区临时无线标识，从而使得在建立远端设备到网络侧设备之间的接入网链接的过程中，提高接入保障。
在一个可能的设计中，该第一接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；该第三接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；该第四接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU。通过不同的消息类型来发送，使得消息的发送方式更为灵活。
第四方面，本发明实施例提供了一种链接建立方法，该方法包括：中继设备接收网络侧设备发送的接入网协议层2消息，该接入网协议层2消息用于建立网络侧设备与远端设备之间的接入网链接，接入网协议层2消息包括远端设备与网络侧设备之间的无线承载配置信息；中继设备再根据所述接入网协议层2消息将无线承载配置通过中继设备与远端设备之间的无线链路发送给远端设备。
本发明实施例提供的方案中，在网络侧设备中预先存储有远端设备与中继设备之间的末梢链路映射关系的情况下，不需要远端设备向网络侧设备发送接 入请求，而由网络侧设备主动通过中继设备向远端设备发送无线承载配置信息建立远端设备与网络侧设备之间的接入网链接，使得在该情景下，网络侧设备与远端设备之间接入网链接的建立过程更简便。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
在一个可能的设计中，该接入网协议层2消息包括第五指示信息，该第五指示信息用于使中继设备确定无线承载配置信息对应的所述远端设备。从而中继设备在接收到网络侧返回的无线承载配置时，能根据第三指示消息确定远端设备。
在一个可能的设计中，该第五指示信息包括第二接入网协议层2消息的数据类型以及以下消息中的至少一种：
远端设备的标识、远端设备与中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。上述标识均可唯一标识远端设备，所以通过上述标识可确定远端设备。
在一个可能的设计中，该第二接入网协议层2消息使用中继设备与网络侧设备之间的无线信令承载或无线数据承载进行发送。
在一个可能的设计中，该第二接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU。
在一个可能的设计中，中继设备从网络侧设备获取一个或多个小区临时无线标识，以使中继设备将该一个或多个小区临时无线标识中的一个分配给远端设备。从而可实现中继设备主动从网络侧设备获取小区临时无线标识，使远端设备通过中继设备接入网络侧设备的实现过程更灵活。
第五方面，本发明实施例提供了一种链接建立方法，该方法包括：网络侧设备向中继设备发送接入网协议层2消息，该接入网协议层2消息用于建立所述网络侧设备与远端设备之间的接入网链接，该接入网协议层2消息包括远端 设备与网络侧设备之间的无线承载配置信息。
本发明实施例提供的方案中，在网络侧设备中预先存储有远端设备与中继设备之间的末梢链路映射关系的情况下，不需要远端设备向网络侧设备发送接入请求，而由网络侧设备主动通过中继设备向远端设备发送无线承载配置信息建立远端设备与网络侧设备之间的接入网链接，使得在该情景下，网络侧设备与远端设备之间接入网链接的建立过程更简便。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
在一个可能的设计中，该接入网协议层2消息包括第五指示信息，该第五指示信息用于使中继设备确定无线承载配置信息对应的所述远端设备。从而中继设备在接收到网络侧返回的无线承载配置时，能根据第三指示消息确定远端设备。
在一个可能的设计中，该第五指示信息包括第二接入网协议层2消息的数据类型以及以下消息中的至少一种：
远端设备的标识、远端设备与中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。上述标识均可唯一标识远端设备，所以通过上述标识可确定远端设备。
在一个可能的设计中，该第二接入网协议层2消息使用中继设备与网络侧设备之间的无线信令承载或无线数据承载进行发送。
在一个可能的设计中，该第二接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU。
在一个可能的设计中，网络侧设备向中继设备发送一个或多个小区临时无线标识，以使中继设备将该一个或多个小区临时无线标识中的一个分配给远端设备。从而在网络侧设备中预先存储有远端设备与中继设备之间的末梢链路映射关系的情况下，由网络侧设备主动向中继设备发送小区临时无线标识，以使 远端设备与网络侧设备之间的接入网链接建立更方便。
在一个可能的设计中，网络侧设备向中继设备发送接入网协议层2消息之前，网络侧设备还获取中继设备和远端设备之间的对应关系，其中，该对应关系用于指示中继设备与远端设备进行无线通信。从而可使消息发送路径更为准确。
第六方面，本发明实施例提供了一种链路选择方法，该方法包括：远端设备的非接入层NAS层根据指示信息得到链接选择结果信息并将该链路选择结果信息发送给接入层AS层，以使AS层根据链路选择结果信息确定是否通过中继设备建立与网络侧设备之间的接入网链接；或者，也可以由AS层根据指示信息确定是否通过中继设备建立与网络侧设备之间的接入网链接。
在本发明实施例中，由于指示信息可以反映远端设备的数据链路需要，所以通过指示信息来确定远端设备建立链路的方式，该种判断方式得到的链路选择结果将准确反映远端设备的接入需求，更进一步地，通过AS层根据指示信息确定链路选择结果，或由NAS层根据指示信息得到链路选择结果再发送给AS层，从而使得链路选择方式更为灵活，因此也能够进一步的提升用户的业务体验。
在一个可能的设计中，该指示信息包括以下至少一种：EMM登记信息、内部设置信息、通讯实体层状态信息以及数据发送要求信息。由于这几个指示信息可以准确地反映远端设备的通信状态，所以可利用该指示信息确定链路选择结果，使得到的结果符合需求。
在一个示例中，该EMM登记信息包括EMM注册状态或EMM未注册状态；该内部设置信息包括省电模式、非省电模式；该通讯实体层状态信息包括不在服务区、ECM注册状态、ECM未注册状态、MM空闲状态或MM连接状态；该数据发送要求信息包括服务质量Qos信息、数据类型信息，该数据类型信息包括语音主叫、语音被叫和紧急呼叫。
在一个示例中，当以下指示信息中的至少一个满足时，确定远端设备采用通过中继设备建立与网络侧设备之间的初始链接：
EMM登记信息为EMM未注册状态、内部设置信息为省电模式、通讯实体状态信息为不在服务区、数据类型信息为语音主叫、数据类型信息为语音被 叫、数据类型信息为所述紧急呼叫；或者，
若数据类型信息为语音被叫、语音被叫或紧急呼叫，且通讯实体层状态信息为ECM注册状态，确定远端设备采用通过中继设备建立与网络侧设备之间的初始链接。
第七方面，本发明实施例提供一种中继设备，该中继设备具有实现上述第一方面的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，中继设备包括处理器、接收器和发射器，所述处理器被配置为支持终端执行上述方法中相应的功能。所述接收器和发射器用于支持第终端与基站之间的通信。进一步的，中继设备还可以包括存储器，所述存储器用于与处理器耦合，其保存终端必要的程序指令和数据。
第八方面，本发明实施例提供一种网络侧设备，该网络侧设备具有实现上述第二方面的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，该网络侧设备可以为基站，或者，也可以为其它网络节点，例如，服务GPRS支持节点、移动性管理实体、非接入层的网络实体或无线控制资源层的网络实体。
在一个可能的设计中，当网络侧设备为基站时，基站的结构中包括处理器、发射器和接收器，所述处理器被配置为支持基站执行上述方法中相应的功能。所述发射器和接收器用于支持基站与终端之间的通信。进一步的，基站还可以包括存储器，所述存储器用于与处理器耦合，其保存基站必要的程序指令和数据。
第九方面，本发明实施例提供一种远端设备，该终端具有实现上述第三方面的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，远端设备包括处理器、接收器和发射器，所述处理器被配置为支持终端执行上述方法中相应的功能。所述接收器和发射器用于支持第终端与基站之间的通信。进一步的，远端设备还可以包括存储器，所述存储器用于与处理器耦合，其保存终端必要的程序指令和数据。
第十方面，本发明实施例提供一种中继设备，该中继设备具有实现上述第 四方面的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，中继设备包括处理器、接收器和发射器，所述处理器被配置为支持终端执行上述方法中相应的功能。所述接收器和发射器用于支持第终端与基站之间的通信。进一步的，中继设备还可以包括存储器，所述存储器用于与处理器耦合，其保存终端必要的程序指令和数据。
第十一方面，本发明实施例提供一种网络侧设备，该网络侧设备具有实现上述第五方面的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，该网络侧设备可以为基站，或者，也可以为其它网络节点，例如，服务GPRS支持节点、移动性管理实体、非接入层的网络实体或无线控制资源层的网络实体。
在一个可能的设计中，当网络侧设备为基站时，基站的结构中包括处理器、发射器和接收器，所述处理器被配置为支持基站执行上述方法中相应的功能。所述发射器和接收器用于支持基站与终端之间的通信。进一步的，基站还可以包括存储器，所述存储器用于与处理器耦合，其保存基站必要的程序指令和数据。
第十二方面，本发明实施例提供一种远端设备，该终端具有实现第六方面的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，远端设备包括处理器、接收器和发射器，所述处理器被配置为支持终端执行上述方法中相应的功能。所述接收器和发射器用于支持第终端与基站之间的通信。进一步的，远端设备还可以包括存储器，所述存储器用于与处理器耦合，其保存终端必要的程序指令和数据。
第十三方面，本发明实施例提供一种链接建立系统，该系统包括上述方面所述的中继设备、网络侧设备和远端设备。
第十四方面，本发明实施例提供一种计算机存储介质，用于储存为上述用于第七方面所述的中继设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
第十五方面，本发明实施例提供一种计算机存储介质，用于储存为上述用 于第八方面所述的网络侧设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
第十六方面，本发明实施例提供一种计算机存储介质，用于储存为上述用于第九方面所述的远端设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
第十七方面，本发明实施例提供一种计算机存储介质，用于储存为上述用于第十方面所述的中继设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
第十八方面，本发明实施例提供一种计算机存储介质，用于储存为上述用于第十一方面所述的网络侧设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
第十九方面，本发明实施例提供一种计算机存储介质，用于储存为上述用于第十二方面所述的远端设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
相较于现有技术，本发明实施例提供的方案中，通过中继设备建立远端设备与网络侧设备之间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网络侧设备，提高网络接入灵活性。例如，当远端设备处于网络侧设备的覆盖范围外时，使远端设备可通过中继设备建立与网络侧设备之间的接入网链接。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对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，下面描述 中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-a是本发明实施例提供的一种链接建立系统的网络架构图；
图1-b是本发明实施例提供的另一种链接建立系统的网络架构图；
图2是本发明实施例提供的协议栈结构示意图；
图3是本发明实施例提供的一种链接建立方法的实施例流程示意图；
图4是本发明实施例提供的另一种链接建立方法的流程示意图；
图5是本发明实施例提供的一种中继设备的结构示意图；
图6为本发明实施例提供的另一种中继设备的结构示意图；
图7为本发明实施例提供的一种网络侧设备的结构示意图；
图8为本发明实施例提供的另一种网络侧设备的结构示意图；
图9为本发明实施例提供的一种远端设备的结构示意图；
图10为本发明实施例提供的另一种远端设备的结构示意图；
图11为本发明实施例提供的一种中继设备的结构示意图；
图12为本发明实施例提供的另一种中继设备的结构示意图；
图13为本发明实施例提供的一种网络侧设备的结构示意图；
图14为本发明实施例提供的另一种网络侧设备的结构示意图；
图15为本发明实施例提供的一种远端设备的结构示意图；
图16为本发明实施例提供的另一种远端设备的结构示意图。
具体实施方式
本发明实施例提供了一种链接建立方法及相关设备，可以使远端终端通过中继设备建立到网络侧设备的接入网链接，提高网络接入灵活性。
为了使本技术领域的人员更好地理解本发明方案，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，所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施例。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前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”和“第 三”等是用于区别不同对象，而非用于描述特定顺序。此外，术语“包括”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本发明的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
首先参见图1-a和图1-b，图1-a是本发明实施例提供的一种链接建立系统的网络架构图，图1-b是本发明实施例提供的另一种链接建立系统的网络架构图。本发明实施例所提供的链接建立方法以及链路选择方法可基于这两个网络架构图来执行。在图1-a所示的第一网络架构中，包括远端设备110，中继设备120以及网络侧设备130。其中，中继设备是120指能直接接入网络侧设备130从而与网络侧设备130之间建立通信的设备，用于转发远端设备的数据和或者信令到移动通讯网络的设备或者将数据和/或者信令从网络侧设备130转发到远端设备110；远端设备110可以是指与网络侧设备130距离较远，处于网络侧设备130的网络覆盖范围之外，从而无法直接和网络侧设备130建立通讯连接，但远端设备110与中继设备120之间可以直接建立连接，例如，远端设备110与中继设备120之间可以低功耗蓝牙(Blue tooth low energy，简称BLE)或无线技术Wifi建立链接，从而远端设备110可以通过中继设备120建立与网络侧设备130之间的接入网链接，以进行上行或者下行数据的传输。
具体地，该远端设备110可以为手机、可穿戴设备(Wearable equipment，简称WE)等用户设备(User Equipment，简称UE)，该中继设备120也可以为手机、可穿戴设备等通信终端，该网络侧设备130可以为演讲型基站(evolved NodeB，简称eNodeB)等提供网络接入资源的网络侧设备。
在图1-b所示的网络架构中，与图1-a不同的是，远端设备110处于网络侧设备130的网络覆盖范围内，也即远端设备110可与网络侧设备130之间直 接建立网络通信连接，但是当远端设备110直接接入网络侧设备130提供的网络服务时，需要较大的发射功率，而由于远端设备110一般为一些电池容量比较小的可穿戴设备，所以需要该远端设备110的操作为低功耗的，而当远端设备110与中继设备120进行通信时，所需要的发射功率比较小，所以为了节约远端设备110的电量，可以在该第二网络架构下，使远端设备110通过中继设备120与建立与网络侧设备130之间的接入网链接，以进行上行或者下行数据的传输。
参见图2，图2示出了本发明实施例提供的协议栈结构示意图。该协议栈为远端设备、中继设备以及网络侧设备之间的控制面协议栈，本发明实施例所提供的链接建立方法以及链路选择方法均基于该协议栈结构进行实现。
在图2所示的控制面协议栈结构中，远端设备与网络侧设备之间具有对等的无线资源控制(Radio Resource Control，简称RRC)层和(Packet Data Convergence Protocol，简称PDCP)层，RRC层负责管理远端设备的接入链接的参数配置和建立远端设备的承载(包括接入的无线承载和网络侧设备到核心网的承载)，配置远端设备到传输数据和信令的安全参数。
基于如图2所示的协议栈，对于核心网的移动性处理实体(Mobility Management Entity Mobility Management Entity，简称MME)，服务网关(Serving GateWay，简称SGW)，PDN网关(PDN GateWay，简称PGW)来说，WE就如同直接通过通过UU口链接到eNB，核心网对于WE的管理与不经过relay UE时相同，从而可以使得能够保持核心网的兼容性，以及在WE与relay UE离开较远时，WE直接通过UU口链接到eNB时，eNB仍然保持WE的上下文，可以快速恢复业务数据的传递能力，移动性的处理流程简单而时延少。
这样的协议栈对于eNB来说，WE的RRC的上传下载数据，特别是安全参数都是eNB直接管理的，信令以及数据传输的完整性保护、加密解密的过程都是只由WE与eNB的PDCP层参与完成的，保证了WE经过任何一个relay UE的情形下，WE到eNB的信令和/或者数据的传输都是安全可靠的，因为relay UE无法解密WE的数据。
在本发明实施例所提供的协议栈架构中，relay UE与WE的之间的接口可以是长期演进(Long Term Evolution，简称LTE)的D2D，或者蓝牙技术，或者wifi技术，或者其他的终端之间进行直接通信的无线技术。
参见图3，图3示出了本发明实施例提供的一种链接建立方法的实施例流程示意图。如图3所示，该方法可以包括以下步骤：
S301、中继设备向远端设备发送权限指示信息，以指示远端UE该中继设备具有中继UE的权限。
在本发明实施例中，当远端UE监听到该指示信息后，远端UE选择通过该中继UE建立和网络侧设备之间的初始链接。
具体地，该中继UE可以通过发送同步信号，或广播信息，该广播信息用于被远端设备WE发现可以通过中继UE接入蜂窝网络。
具体地，该广播信息的内容包括公用陆地移动网络(Public Lands Mobile Network，简称PLMN)标识，cellid和Ueid，进一步还包含中继UE所在小区的位置追踪区(Tracking area，简称TA)，或者TAlist。
其中，PLMN标识是中继UE所驻留的网络的标识，例如中国移动，用于指示远端设备可通过该中继UE所接入的移动网络；cellid则是relay UE(中继UE)当前驻留或者被服务的小区的标识，Ueid是蜂窝网络中基站或者核心网设备分配给relay UE的标识；TA是中继UE当前驻留或者被服务小区所属于的位置追踪区。
进一步的，该广播信息中还可以包括蜂窝网络中的基站的IP地址；
更进一步的，该广播信息中会广播蓝牙或者WiFi技术需要的上层协议类型指示信息代码，这个代码是用于通知收发两端来标识一个数据包的协议类型。
可选地，该广播信息是在蓝牙(BlueTooth，简称BT)、BLE或者wifi的广播信道上进行发送的。
可选地，该广播信息也可以是在远端设备和中继设备都能够使用的其它无线技术上进行发送的。
可选地，更进一步地，在步骤S301之前，中继设备向网络侧设备发送鉴权认证并获得网络侧设备的授权。
在本发明实施例中，当远端设备的RRC层接收到上层的指示信息或者信令数据包时，若该指示信息或信令数据包指示需要通过中继设备建立远端设备与网络侧设备之间的接入网链接时，此时远端设备将通过具有的中继权限的中继设备建立与网络侧设备之间的接入网链接。
具体地，在本发明实施例中，中继设备首先需要向网络侧设备进行鉴权，成为可以做为远端UE建立远端设备和网络侧设备之间的RRC链接的中继UE。
S302、建立远端设备和中继设备之间的点对点末梢链路。
其中，点对点末梢链路是指远端设备与中继设备进行通信的通信连接，具体地，该点对点末梢链路可以为D2D链接，使用的是预配置的profile，用于满足传输最初的一些RRC信令。
具体地，该D2D链接可以为蓝牙链接BTlink，其中的profile至少包括WE的BTlink的蓝牙的核心协议数据传输协议L2CAP配置参数，支持的上层协议类型以及对应指示信息。
S303、远端设备通过所述远端设备与中继设备之间的末梢链路向所述中继设备发送第一接入网协议层2消息，所述第一接入网协议层2消息用于表示所述远端设备请求建立网络侧设备与所述远端设备之间的接入网链接。
此时，中继设备通过所述中继设备与远端设备之间的末梢链路接收所述远端设备发送的第一接入网协议层2消息，所述第一接入网协议层2消息用于表示所述远端设备请求建立网络侧设备与所述远端设备之间的接入网链接。
可选地，所述第一接入网协议层2消息包括第一指示信息，所述第一指示信息用于标识所述远端设备，所述第一指示信息包括所述第一接入网协议层2消息的数据类型以及以下至少一种信息：
所述远端设备的标识、所述远端设备的业务类型、所述远端设备的组属性以及所述远端设备的设备类型或者设备等级。
其中，所述第一接入网协议层2消息的数据类型用于指示该消息为信令数据或业务数据，该业务数据可以为会话类业务数据、流类业务数据、交互类业务数据或者背景类业务数据。
可选地，用于标识远端设备的第一指示信息还可以是该远端设备的MAC地址(其中，该MAC地址是硬件设备商出厂是设置的)，和/或者该远端设备 的IP地址等。
可选地，该第一指示信息还可以是其它用于标识远端设备的信息。
可以理解，通过在第一接入网协议层2消息中携带第一指示信息，从而使得中继设备可以通过该第一指示信息区分发送该第一接入网协议层2消息的远端WE。
具体地，远端设备WE生成第一接入网协议层2消息RRC connection Request消息，在Adapter层、数据包合成协议层(Packet Data Convergence Protocol，简称PDCP)层或无线链路控制层(Radio Link Control，简称RLC层)添加自己的ID即临时标识码(Temporary Mobile Subscriber Identity，简称TMSI)或国际移动用户识别码(international mobile subscriber identity，简称IMSI)，其中，TMSI在WE已经进行了初始附着时使用，而IMSI在尚未进行初始附着时使用。
具体地，在Adaper层的配置要求添加RBID时，添加RBID＝0的包头，用于表明这个递交到BT底层的数据包为SRB0(signaling radio bearer 0)的消息。
具体地，该第一接入网协议层2消息可以通过WE和中继设备之间的BTlink从WE发送至中继设备。
可选地，该第一接入网层2消息可以为为RLC PDU、MAC DPU或PDCP PDU。
S304、中继设备根据所述第一接入网协议层2消息对应生成第二接入网协议层2消息并将所述第二接入网协议层2消息发送给所述网络侧设备，所述第二接入网协议层2消息用于请求所述网络侧设备建立所述接入网链接。
此时，网络侧设备将接收中继设备发送的第二接入网协议层2消息，所述第二接入网协议层2消息用于请求所述网络侧设备建立所述网络侧设备与远端设备之间的接入网链接。
可选地，所述中继设备根据所述第一接入网协议层2消息对应生成第二接入网层2消息之前，所述方法还包括：
所述中继设备获取所述第一接入网层2消息的所述第一指示信息或末梢无线链路信息，所述末梢无线链路信息包括用于区分所述远端设备的时域或频 域物理信息、用于区分所述远端设备的无线链路标识、用于区分所述远端设备的无线链路协议层实体标识信息。
可选地，中继设备还可以获取其它可以区分远端设备的信息。
可以理解，通过在中继设备根据所述第一接入网协议层2消息对应生成第二接入网层2消息之前获取用于区分远端设备的信息，从而使得对应生成的第二接入协议层2消息也能标识远端设备。
可选地，所述第二接入网层2消息包括第二指示信息，所述第二指示信息用于给所述网络侧设备指示所述第二接入网层2消息对应的所述远端设备或指示所述第二接入网层2消息是用于所述远端设备请求所述网络侧设备建立所述接入网链接。
可选地，所述第二指示信息包括第二接入网层2消息的数据类型以及以下消息中的至少一种：
所述远端设备的标识、所述远端设备与所述中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。
其中，末梢链路标识是指远端设备与中继设备之间所建立的点对点通信链路的标识，从而可以通过该末梢链路标识来指示与该中继设备通信的远端设备。
可选地，该第二指示信息还可以包括其它可以标识远端设备，或者标识远端设备和中继设备之间的链路的信息。
需要说明，第二接入网协议层2消息的数据类型用于指示网络侧设备在对该第二接入网协议层2消息进行解析时所使用的解析方式。
具体地，中继UE的BT底层正确接收到第一接入网协议层2消息RRC connection Request消息之后，根据底层的PSM指示递交给Adapter层。Adapter层记录TMSI，读取RBID域得知数据包的内容为SRB0的内容。
具体地，当中继UE收到远端设备的第一接入网层2消息，判断出该第一接入网层2消息是SRB0的消息，就能够知道远端设备想和eNB建立接入网链接或者恢复曾经建立失败的接入网链接，中继UE因此生成第二接入网层2消息，该第二接入网层2消息中设置一个容器container，这个container中包含远端UE发送的第二接入网层2消息的内容。然后中继UE再将第二接入网层2消息发送给网络侧设备eNB以通知网络侧设备需要建立一个远端UE至 网络侧设备的接入网链接。
具体地，所述第二接入网层2消息使用所述中继设备与所述网络侧设备之间的无线信令承载或无线数据承载进行发送，所述无线信令承载或者数据承载用于中继远端设备的功能是网络侧设备配置的。
可选地，在本发明一个示例中，所述将所述第二接入网层2消息发送给所述网络侧设备之前，所述方法还包括：
所述中继设备向所述网络侧设备发送第四无线信令承载建立请求；
接收所述网络侧设备返回的所述第四无线信令承载配置信息以使所述中继设备通过基于所述第四无线信令承载配置信息生成的第四无线信令承载将所述第二接入网层2消息发送给所述网络侧设备。
具体地，中继UE首先向eNB发送第四无线信令承载SRB4建立请求或者initial WE request，从而网络侧设备根据该SRB4建立请求或者initial WE request发送SRB4配置信息，中继UE根据该SRB4配置信息建立SRB4，用于传输远端设备与网络侧设备之间的特定接入网层2消息，该特定接入网层2消息是指这个接入网层2消息中能够被中继UE和/或者网络侧设备辨识消息内部的内容是RRC信令消息，而该RRC信令消息用于远端设备和网络侧设备之间进行链路建立维护使用的。
可选地，网络侧设备在第四无线信令承载配置信息中携带了小区无线网络临时识别列表(Cell Radio Network Temmporary Identify list，简称CRNTIlist)，所述CRNTIlist用于后续中继UE给远端设备分配接入网侧标识。
具体地，该第四无线信令承载配置信息可用下述代码进行实现：
Figure PCTCN2016094711-appb-000001
Figure PCTCN2016094711-appb-000002
可选地，在本发明另一个示例中，所述中继设备在生成第二接入网层2消息之前，所述方法还包括：
中继UE根据网络侧设备配置的CRNTIlist来为所述远端设备分配一个小区无线网络临时识别CRNTI。
进一步可选地，中继UE通过末梢链路将分配的所述CRNTI通知所述远端设备。
可选地，在本发明另一个示例中，所述中继设备将所述第二接入网层2消息发送给所述网络侧设备之后，所述方法还包括：
接收所述网络侧设备响应所述第二接入网层2消息而返回的第四无线信令承载配置信息。
具体地，也可以是中继UE直接转发包含远端设备标识的第一接入网层2消息，然后eNB在接收到该转发消息后发现消息中包含了远端设备标识，因此发送第四无线信令承载配置信息给中继UE以便建立中继UE和eNB之间的SRB4。
可以理解，在建立中继UE和eNB之间的SRB4后，从而远端UE和eNB之间的SRB0消息则可以在该SRB4上进行传输。
可选地，该第二接入网层2消息可以为RLC PDU、MAC DPU或PDCP PDU。
S305、网络侧设备生成第三接入网协议层2消息并向所述中继设备发送所述第三接入网协议层2消息以响应所述第二接入网协议层2消息，所述第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息。
此时，中继设备将接收所述网络侧设备响应所述第二接入网协议层2消息而返回的第三接入网协议层2消息，所述第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息。
可选地，所述第三接入网层2消息包括第三指示信息，所述第三指示信息用于使所述中继设备确定所述无线承载配置信息对应的所述远端设备，以使所述远端设备基于所述无线承载配置信息配置无线承载并发送所述远端设备与所述网络侧设备的接入网链路完成消息给所述网络侧设备。
具体地，所述第三指示信息包括第二接入网层2消息的数据类型以及以下消息中的至少一种：
所述远端设备的标识、所述远端设备与所述中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。
可选地，该第三指示信息还可以为其它可以使中继设备确定无线承载配置信息对应的所述远端设备。
具体地，该第三接入网层2消息使用所述中继设备与所述网络侧设备之间的无线信令承载或无线数据承载进行发送。
具体地，eNB收到第二接入网层2消息，根据第二接入网层2消息中的第三指示信息判断该第二接入网层2消息是否为远端UE发送的SRB0消息，以在该第二接入网层2消息为远端UE发送的SRB0消息时建立或者恢复RRC链接。
具体地，eNB先建立SRB0处理实体，然后去处理远端UE发送的RRC connection request消息(也即第二接入网层2消息)后生成RRC connection setup，该RRC connection setup消息中包含了远端UE与eNB之间的信令承载的配置信息。
可选的，如果中继UE没有被授权给远端UE分配标识的时候，RRC connection setup消息中包括远端WE的CRNTI。
更进一步地，RRC connection setup消息生成后，eNB会继续送入属于中继UE的接入网层2实体来生成第三接入网层2消息。
可选地，该第三接入网层2消息可以为RLC PDU、MAC DPU或PDCP PDU。
具体地，当使用MAC PDU方式时，可在发送给中继UE的MAC PDU中增加一个remote UEid的域用于发送CRNTI。
可选地，第三接入网层2消息可利用步骤S305中在中继UE与网络侧设备之间可以作为中继的无线承载从网络侧设备传输给中继UE。
S306、中继设备根据第三接入网协议层2消息对应生成第四接入网协议层2消息并将所述第四接入网协议层2消息发送给所述远端设备。
可选地，所述第四接入网协议层2消息包括所述远端设备的小区临时无线标识CRNTI。
可选地，所述中继设备从所述网络侧设备获取一个或多个小区临时无线标识，以使所述中继设备将所述一个或多个小区临时无线标识中的一个分配给所述远端设备。
可以理解，当有多个远端UE需要建立与网络侧设备之间的接入网链接时，可以由中继设备首先从网络侧设备(例如eNB)获取多个CRNTI(具体实现方法见实施例步骤S305的描述)，从而远端设备可以从这些分配的CRNTI中进行选择。
具体地，在本发明的一个可能的实施方式中，中继UE建立CRNTI与BTlink之间的映射关系，从而使得与该CRINT对应的第四接入网协议层2消息可以通过与该CRINT对应的BTlink发送至相应的远端WE。
可选地，在本发明一个实施例中，Relay UE建立一个RB用于传输WE的SRB1&2消息。
具体地，可使用如下代码来实现一个DRB来传输远端WE的SRB1&2消息。
Figure PCTCN2016094711-appb-000003
Figure PCTCN2016094711-appb-000004
可选地，在本发明另一个实施例中，分别在Relay UE上建立2个SRB，例如SRB5,SRB6，对应于用于传输远端WE的SRB1和SRB2。
S307、远端设备接收所述网络侧设备返回的第四接入网协议层2消息并基于所述第四接入网协议层2消息建立所述远端设备与所述网络侧设备之间的接入网链接。
在本发明实施例中，所述第四接入网协议层2消息由第三接入网协议层2消息对应生成，所述第三接入网协议层2消息包含所述远端设备与所述网络侧设备之间的无线承载配置信息。建立起远端设备与网络侧设备之间的接入网链接，使得后续远端设备和网络侧设备之间可以基于该链接进行通信，但是在实际通信过程中，各条消息均是通过中继设备在远端设备在网络侧设备之间进行传输。
可选地，该第四接入网协议层2消息包括所述远端设备的小区临时无线标识。
具体地，远端设备从第四接入网信息中获得网络侧设备上自己的标识，也即该CRNTI。
具体地，远端WE收到“RRC connection setup”消息后，获得CRNTI，按照该消息中携带的SRB配置信息建立远端UE和eNB之间的无线信令承载SRB，并且生成“RRC connection setup complete”消息发送给eNB，这个数据包就通过中继UE与eNB之间新建的Relay SRB来传输。其中，“RRC connection setup complete”消息中会携带NAS层递交的“attach request”消息。
更进一步地，在远端设备通过中继设备建立与网络侧设备之间的接入网链接之前，首先需要远端设备对接入承载链路类型进行选择。
具体地，在步骤S301之前，还包括步骤：
S308、远端设备的非接入层NAS层根据指示信息得到链路选择结果信息或远端设备的AS层根据指示信息确定链路选择结果。
在本发明实施例中，远端设备的非接入层NAS层根据指示信息得到链路 选择结果信息并将所述链路选择结果信息发送给接入层AS层，以使所述AS层根据所述链路选择结果信息确定是否通过所述中继设备建立与所述网络侧设备之间的接入网链接；或者，
所述AS层根据所述指示信息确定是否通过所述中继设备建立与所述网络侧设备之间的接入网链接。
在本发明实施例中，由于指示信息可以反映远端设备的数据链路需要，所以通过指示信息来确定远端设备建立链路的方式，该种判断方式得到的链路选择结果将准确反映远端设备的接入需求，更进一步地，通过AS层根据指示信息确定链路选择结果，或由NAS层根据指示信息得到链路选择结果再发送给AS层，从而使得链路选择方式更为灵活，因此也能够进一步提升用户的业务体验。
可选地，该指示信息包括以下至少一种：EMM登记信息、内部设置信息、通讯实体层状态信息以及数据发送要求信息。
具体地，所述EMM登记信息包括EMM注册状态或EMM未注册状态；所述内部设置信息包括省电模式、非省电模式；所述通讯实体层状态信息包括不在服务区、ECM注册状态、ECM未注册状态、MM空闲状态或MM连接状态；所述数据发送要求信息包括服务质量Qos信息、数据类型信息，所述数据类型信息包括语音主叫、语音被叫和紧急呼叫。
可选地，当以下指示信息中的至少一个满足时，确定所述远端设备采用通过所述中继设备建立与所述网络侧设备之间的初始链接：
所述EMM登记信息为所述EMM未注册状态、所述内部设置信息为所述省电模式、所述通讯实体状态信息为所述不在服务区、所述数据类型信息为所述语音主叫、所述数据类型信息为所述语音被叫、所述数据类型信息为所述紧急呼叫；或者，
若所述数据类型信息为所述语音被叫、所述语音被叫或所述紧急呼叫，且所述通讯实体层状态信息为所述ECM注册状态，确定所述远端设备采用通过所述中继设备建立与所述网络侧设备之间的初始链接。
举例说明，在本发明的一个示例中，当指示信息中包含紧急呼叫、语音主叫或者语音被叫时，AS会同时发起2个链路的建立，一个是通过蜂窝的无线 模块直接与蜂窝系统的eNB建立RRC链接，另一个是通过D2D模块(包括LTE-D2D，BT，wifi)来寻找relay UE，找到的情况下同时建立一个经过中继的relay link。
具体地，当确定通过所述中继设备建立与所述网络侧设备之间的接入网链接，且中继模式可用时，远端WE的NAS层选择发送NAS信令attach request的承载链路为通过中继设备的承载链路。远端WE的NAS层向AS层发送指示信息：承载链路类型指示为中继承载；远端WE然后发送NAS层生成的attach request消息给AS层实体，例如RRC层。从而由AS层实体选择通过中继设备建立与网络侧设备之间的接入网链接。
更进一步地，当确定通过所述中继设备建立与所述网络侧设备之间的接入网链接，但当无法寻找到合适的relay UE，或者通过relay UE link建立时间超过一个设定的门限值时，AS层选择蜂窝无线模块直接和eNB建立RRC链接。所述门限值可以是UE内部设定，也可以是从当前驻留的网络获取的。
本发明实施例提供的技术方案中，通过中继设备转发远端设备向网络侧设备请求的第一接入网协议层2消息，并将该第一接入网协议层2消息对应生成第二接入网协议层2消息并发送给网络侧设备，从而网络侧设备根据该第二接入网协议层2消息生成第三接入网协议层2消息并发送给中继设备，该第三接入网协议层2消息中携带远端设备与网络侧设备之间的无线承载配置信息，中继设备再将该第三接入网协议层2消息对应生成第四接入网协议层2消息并发送给远端设备，最后远端设备基于该无线承载配置信息建立远端设备与网络侧设备之间的接入网链接。通过中继设备建立远端设备与网络侧设备之间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网络侧设备，提高网络接入灵活性。例如，当远端设备处于网络侧设备的覆盖范围外时，使远端设备可通过中继设备建立与网络侧设备之间的接入网链接。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时 延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
参见图4，图4是本发明实施例提供的另一种链接建立方法的流程示意图，该方法基于的场景是：网络侧设备中预先存储有远端设备与中继设备之间的末梢链路映射关系，例如，在远端设备通过中继设备建立与网络侧设备之间的接入网链接失败后，或者，远端设备在之前时刻通过中继设备成功建立与网络侧设备之间的接入网链接后被动地使该链接断开后(比如中继设备切换小区)，此时为了恢复远端设备与网络侧设备之间的接入网链接，网络侧设备可主动向中继设备请求建立网络侧设备与远端设备之间的接入网链接，或者，因为有共同的属性，网络侧记录了中继设备和远端设备的配对关系，比如远端设备和中继设备属于同一个用户，属于同一个朋友圈，有共同的业务类型，有共同的ISDN号码等，当网络侧有数据要发送给远端设备时，网络侧主动发起通过中继设备到远端设备的链接建立，具体链接建立方法流程如下。其中，图4所示的方法中，与图3所示方法相同或类似的内容可以参考图3中的详细描述，此处不再赘述。如图4所示，该方法可以包括如下步骤：
S401、网络侧设备发送CRNTI给中继设备，以使中继设备将该CRNTI分配给远端设备。
在本发明实施例中，网络侧设备在主动给中继设备发送建立与远端设备之间的接入网链接之前，首先为远端设备分配CRNTI。或者
可选的，在本发明实施例中，在网络侧设备给所述中继设备分配一个或多个小区临时无线标识，以使所述中继设备将所述一个或多个小区临时无线标识中的一个分配给所述远端设备。
S402、网络侧设备向中继设备发送接入网协议层2消息。
其中，该接入网协议层2消息用于建立所述网络侧设备与远端设备之间的接入网链接，所述接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息。
在本发明实施例中，当网络侧设备向中继设备发送接入网协议层2消息时，中继设备接收网络侧设备发送的接入网协议层2消息。
可选地，所述接入网协议层2消息包括第五指示信息，所述第五指示信息 用于使所述中继设备确定所述无线承载配置信息对应的所述远端设备，以使所述远端设备基于所述无线承载配置信息配置无线承载并发送所述远端设备与所述网络侧设备的接入网链路完成消息给所述网络侧设备。
可选地，所述第五指示信息包括以下消息中的至少一种：
所述远端设备的标识、所述远端设备与所述中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。
可选地，所述接入网协议层2消息使用所述中继设备与所述网络侧设备之间的无线信令承载或无线数据承载进行发送。
可选地，所述接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU。
可选地，所述接入网协议层2消息使用所述中继设备与所述网络侧设备之间的无线信令承载或无线数据承载进行发送。
更进一步地，网络侧设备向中继设备发送接入网协议层2消息之前，所述方法还包括：
网络侧设备获取中继设备和远端设备之间的对应关系，所述对应关系用于指示所述中继设备与所述远端设备进行无线通信。
S403、中继设备根据所述接入网协议层2消息将所述无线承载配置通过所述中继设备与所述远端设备之间的无线链路发送给所述远端设备。
S404、远端设备接收接入网协议层2消息并基于该接入网协议层2消息建立所述远端设备与所述网络侧设备之间的接入网链接。
本发明实施例提供的技术方案中，网络侧设备主动发送接入网协议层2消息给中继设备，该接入网协议层2消息中包括远端设备与网络侧设备之间的无线承载配置信息，从而中继设备再将该接入网协议层2消息转发给远端设备，以使远端设备根据该无线承载配置信息建立与网络侧设备之间的接入网链接。通过网络侧设备通过中继设备主动请求建立与远端设备之间的接入网链接，最后远端设备可通过中继设备建立与网络侧设备之间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网络侧设备，提高网络接入灵活性。例如，当远端设备处于网络侧设备的覆盖范围外时，使远端设备可通过中继设备建立与网络侧设备之间的接入网链接。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网 链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
参见图5，图5为本发明实施例提供的一种中继设备的结构示意图，如图5所示，该中继设备500包括：
接收单元510，用于通过所述中继设备与远端设备之间的末梢链路接收所述远端设备发送的第一接入网协议层2消息，所述第一接入网协议层2消息用于表示所述远端设备请求建立网络侧设备与所述远端设备之间的接入网链接；
生成单元520，用于根据所述第一接入网协议层2消息对应生成第二接入网协议层2消息并将所述第二接入网协议层2消息发送给所述网络侧设备，所述第二接入网协议层2消息用于请求所述网络侧设备建立所述接入网链接；
所述接收单元510还用于：接收所述网络侧设备响应所述第二接入网协议层2消息而返回的第三接入网协议层2消息，所述第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息；
所述生成单元510，还用于根据所述第三接入网协议层2消息对应生成第四接入网协议层2消息并将所述第四接入网协议层2消息发送给所述远端设备。
可选地，所述第一接入网协议层2消息包括第一指示信息，所述第一指示信息用于标识所述远端设备，所述第一指示信息包括以下至少一种信息：
所述远端设备的标识、所述远端设备的业务类型、所述远端设备的组属性以及所述远端设备的设备类型或者设备等级。
可选地，所述中继设备500还包括：
获取单元530，用于获取所述第一接入网协议层2消息的所述第一指示信息或末梢无线链路信息，所述末梢无线链路信息包括用于区分所述远端设备的时域或频域物理信息、用于区分所述远端设备的无线链路标识、用于区分所述远端设备的无线链路协议层实体标识信息。
可选地，所述第二接入网协议层2消息包括第二指示信息，所述第二指示 信息用于给所述网络侧设备指示所述第二接入网协议层2消息对应的所述远端设备或指示所述第二接入网协议层2消息是用于所述远端设备请求所述网络侧设备建立所述接入网链接。
可选地，所述第二指示信息包括第二接入网协议层2消息的数据类型以及以下消息中的至少一种：
所述远端设备的标识、所述远端设备与所述中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。
可选地，所述第三接入网协议层2消息包括第三指示信息，所述第三指示信息用于使所述中继设备确定所述无线承载配置信息对应的所述远端设备。
可选地，所述第三指示信息包括第二接入网协议层2消息的数据类型以及以下消息中的至少一种：
所述远端设备的标识、所述远端设备与所述中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。
可选地，所述第二接入网协议层2消息和/或第三接入网协议层2消息使用所述中继设备与所述网络侧设备之间的无线信令承载或无线数据承载进行发送。
可选地，所述第四接入网协议层2消息包括所述远端设备的小区临时无线标识。
可选地，所述获取单元还用于：从所述网络侧设备获取一个或多个小区临时无线标识，以使所述中继设备将所述一个或多个小区临时无线标识中的一个分配给所述远端设备。
可选地，所述第一接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；
所述第二接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；
所述第三接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；
所述第四接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU。
可选地，所述中继设备还包括：
发送单元540，用于向所述网络侧设备发送第四无线信令承载建立请求；
所述接收单元510，还用于接收所述网络侧设备返回的所述第四无线信令 承载配置信息以使所述中继设备通过基于所述第四无线信令承载配置信息生成的第四无线信令承载将所述第二接入网协议层2消息发送给所述网络侧设备。
可选地，所述接收单元510，还用于：
接收所述网络侧设备响应所述第二接入网协议层2消息而返回的第四无线信令承载配置信息。
本发明实施例中，通过中继设备建立远端设备与网络侧设备之间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网络侧设备，提高网络接入灵活性。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
在本实施例中，中继设备500是以单元的形式来呈现。这里的“单元”可以指特定应用集成电路(application-specific integrated circuit，ASIC)，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
可以理解的是，本实施例的中继设备500的各功能单元的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可以参照上述方法实施例的相关描述，此处不再赘述。
参见图6，图6为本发明实施例提供的另一种中继设备的结构示意图，如图6所示，该中继设备600包括：
发射器601，接收器602和处理器603。其中，处理器603也可以为控制器，图6中表示为“控制器/处理器603”。可选的，所述中继设备600还可以包括调制解调处理器605，其中，调制解调处理器605可以包括编码器606、调制器607、解码器608和解调器605。
在一个示例中，发射器601调节(例如，模拟转换、滤波、放大和上变频等)该输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中所述的基站。在下行链路上，天线接收上述实施例中基站发射的下行链路信号。接收器602调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。在调制解调处理器605中，编码器606接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器607进一步处理(例如，符号映射和调制)编码后的业务数据和信令消息并提供输出采样。解调器609处理(例如，解调)该输入采样并提供符号估计。解码器608处理(例如，解交织和解码)该符号估计并提供发送给中继设备600的已解码的数据和信令消息。编码器606、调制器607、解调器609和解码器608可以由合成的调制解调处理器605来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE及其他演进系统的接入技术)来进行处理。需要说明的是，当中继设备600不包括调制解调处理器605时，调制解调处理器605的上述功能也可以由处理器603完成。
处理器603对中继设备600的动作进行控制管理，用于执行上述本发明实施例中由中继设备600进行的处理过程。例如，处理器603还用于执行上述方法实施例中相应的步骤，和/或本申请所描述的技术方案的其他过程。
进一步的，中继设备600还可以包括存储器604，存储器604用于存储用于中继设备600的程序代码和数据。
参见图7，图7为本发明实施例提供的一种网络侧设备的结构示意图，如图7所示，该网络侧设备700包括：
接收单元710，用于接收中继设备发送的第二接入网协议层2消息，所述第二接入网协议层2消息用于请求所述网络侧设备建立所述网络侧设备与远端设备之间的接入网链接；
发送单元720，用于向所述中继设备发送第三接入网协议层2消息以响应所述第二接入网协议层2消息，所述第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息。
可选地，所述第三接入网协议层2消息包括第三指示信息，所述第三指示 信息用于使所述中继设备确定所述无线承载配置信息对应的所述远端设备。
可选地，所述第三指示信息包括第二接入网协议层2消息的数据类型以及以下消息中的至少一种：
所述远端设备的标识、所述远端设备与所述中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。
可选地，，所述第二接入网协议层2消息和/或第三接入网协议层2消息使用所述中继设备与所述网络侧设备之间的无线信令承载或无线数据承载进行发送。
可选地，所述发送单元720，还用于：
向所述中继设备发送一个或多个小区临时无线标识，以使所述中继设备将所述一个或多个小区临时无线标识中的一个分配给所述远端设备。
可选地，所述第二接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；
所述第三接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU。
本发明实施例中，通过中继设备建立远端设备与网络侧设备之间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网络侧设备，提高网络接入灵活性。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
在本实施例中，网络侧设备700是以单元的形式来呈现。这里的“单元”可以指特定应用集成电路(application-specific integrated circuit，ASIC)，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
可以理解的是，本实施例的网络侧设备700的各功能单元的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可以参照上述方法实施例的 相关描述，此处不再赘述。
参见图8，图8为本发明实施例提供的另一种网络侧设备的结构示意图，如图8所示，该网络侧设备800包括：
发射器/接收器801和处理器802。其中，处理器802也可以为控制器，图8中表示为“控制器/处理器802”。所述发射器/接收器801用于支持网络侧设备与上述实施例中的所述终端之间收发信息，以及支持所述终端与其他终端之间进行无线电通信。所述处理器802执行各种用于与终端通信的功能。在上行链路，来自所述终端的上行链路信号经由天线接收，由接收器801进行解调(例如将高频信号解调为基带信号)，并进一步由处理器802进行处理来恢复终端所发送到业务数据和信令信息。在下行链路上，业务数据和信令消息由处理器802进行处理，并由发射器801进行调制(例如将基带信号调制为高频信号)来产生下行链路信号，并经由天线发射给终端。需要说明的是，上述解调或调制的功能也可以由处理器802完成。例如，处理器802还用于执行上述方法实施例中的相应步骤，和/或本发明实施例所描述的技术方案的其他过程。
进一步的，网络侧设备800还可以包括存储器803，存储器803用于存储网络侧设备500的程序代码和数据。此外，网络侧设备还可以包括通信单元804。通信单元804用于支持网络侧设备与其他网络实体(例如核心网中的网络设备等)进行通信。例如，在LTE系统中，该通信单元804可以是S1-U接口，用于支持网络侧设备与服务网关(Serving Gateway，SGW)进行通信；或者，该通信单元804也可以是S1-MME接口，用于支持网络侧设备与移动性管理实体(Mobility Management Entity，MME)进行通信。
可以理解的是，图8仅仅示出了网络侧设备800的简化设计。在实际应用中，网络侧设备800可以包含任意数量的发射器，接收器，处理器，控制器，存储器，通信单元等，而所有可以实现本发明实施例的网络侧设备都在本发明实施例的保护范围之内。
参见图9，图9为本发明实施例提供的一种远端设备的结构示意图，如图9所示，该远端设备900包括：
发送单元910，用于通过所述远端设备与中继设备之间的末梢链路向所述中继设备发送第一接入网协议层2消息，所述第一接入网协议层2消息用于表示所述远端设备请求建立网络侧设备与所述远端设备之间的接入网链接；
接收单元920，用于接收所述网络侧设备返回的第四接入网协议层2消息，所述第四接入网协议层2消息由第三接入网协议层2消息对应生成，所述第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息。
可选地，所述第一接入网协议层2消息包括第一指示信息，所述第一指示信息用于标识所述远端设备，所述第一指示信息包括以下至少一种信息：
所述远端设备的标识、所述远端设备的业务类型、所述远端设备的组属性以及所述远端设备的设备类型或者设备等级。
可选地，所述远端设备900还包括：
获取单元930，用于通过所述第四接入网协议层2消息获取所述远端设备的小区临时无线标识，所述第四接入网协议层2消息包括所述小区临时无线标识。
可选地，所述第一接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；
所述第三接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU；
所述第四接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU。
本发明实施例中，通过中继设备建立远端设备与网络侧设备之间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网络侧设备，提高网络接入灵活性。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
在本实施例中，远端设备900是以单元的形式来呈现。这里的“单元”可以指特定应用集成电路(application-specific integrated circuit，ASIC)，执行一个 或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
可以理解的是，本实施例的远端设备900的各功能单元的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可以参照上述方法实施例的相关描述，此处不再赘述。
参见图10，图10为本发明实施例提供的另一种远端设备的结构示意图，如图10所示，该远端设备1000包括：
发射器1001，接收器1002和处理器1003。其中，处理器1003也可以为控制器，图10中表示为“控制器/处理器1003”。可选的，所述中继设备1000还可以包括调制解调处理器1005，其中，调制解调处理器1005可以包括编码器1006、调制器1007、解码器1008和解调器1005。
在一个示例中，发射器1001调节(例如，模拟转换、滤波、放大和上变频等)该输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中所述的基站。在下行链路上，天线接收上述实施例中基站发射的下行链路信号。接收器1002调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。在调制解调处理器1005中，编码器1006接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器1007进一步处理(例如，符号映射和调制)编码后的业务数据和信令消息并提供输出采样。解调器1009处理(例如，解调)该输入采样并提供符号估计。解码器1008处理(例如，解交织和解码)该符号估计并提供发送给中继设备1000的已解码的数据和信令消息。编码器1006、调制器1007、解调器1009和解码器1008可以由合成的调制解调处理器1005来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE及其他演进系统的接入技术)来进行处理。需要说明的是，当远端设备1000不包括调制解调处理器1005时，调制解调处理器1005的上述功能也可以由处理器1003完成。
处理器1003对远端设备1000的动作进行控制管理，用于执行上述本发明实施例中由远端设备1000进行的处理过程。例如，处理器1003还用于执行上述方法实施例中相应的步骤，和/或本申请所描述的技术方案的其他过程。
进一步的，远端设备1000还可以包括存储器1004，存储器1004用于存储用于远端设备1000的程序代码和数据。
参见图11，图11为本发明实施例提供的一种中继设备的结构示意图，如图11所示，该中继设备1100包括：
接收单元1110，用于接收网络侧设备发送的接入网协议层2消息，所述接入网协议层2消息用于建立所述网络侧设备与远端设备之间的接入网链接，所述接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息；
发送单元1120，用于根据所述接入网协议层2消息将所述无线承载配置通过所述中继设备与所述远端设备之间的无线链路发送给所述远端设备。
可选地，所述接入网协议层2消息包括第五指示信息，所述第五指示信息用于使所述中继设备确定所述无线承载配置信息对应的所述远端设备。
可选地，所述第五指示信息包括以下消息中的至少一种：
所述远端设备的标识、所述远端设备与所述中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。
可选地，所述接入网协议层2消息使用所述中继设备与所述网络侧设备之间的无线信令承载或无线数据承载进行发送。
可选地，所述接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU。
可选地，所述接收单元1110还用于从所述网络侧设备获取一个或多个小区临时无线标识，以使所述中继设备将所述一个或多个小区临时无线标识中的一个分配给所述远端设备。
本发明实施例中，通过中继设备建立远端设备与网络侧设备之间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网络侧设备，提高网络接入灵活性。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网 链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
在本实施例中，中继设备1100是以单元的形式来呈现。这里的“单元”可以指特定应用集成电路(application-specific integrated circuit，ASIC)，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
可以理解的是，本实施例的中继设备1100的各功能单元的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可以参照上述方法实施例的相关描述，此处不再赘述。
参见图12，图12为本发明实施例提供的另一种中继设备的结构示意图，如图12所示，该中继设备1200包括：
发射器1201，接收器1202和处理器1203。其中，处理器1203也可以为控制器，图12中表示为“控制器/处理器1203”。可选的，所述中继设备1200还可以包括调制解调处理器1205，其中，调制解调处理器1205可以包括编码器1206、调制器1207、解码器1208和解调器1205。
在一个示例中，发射器1201调节(例如，模拟转换、滤波、放大和上变频等)该输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中所述的基站。在下行链路上，天线接收上述实施例中基站发射的下行链路信号。接收器1202调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。在调制解调处理器1205中，编码器1206接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器1207进一步处理(例如，符号映射和调制)编码后的业务数据和信令消息并提供输出采样。解调器1209处理(例如，解调)该输入采样并提供符号估计。解码器1208处理(例如，解交织和解码)该符号估计并提供发送给中继设备1200的已解码的数据和信令消息。编码器1206、调制器1207、解调器1209和解码器1208可以由合成的调制解调处理器1205来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE及其他演进系统的接入技术)来进行处理。需要说明的是，当中继设备1200不包括调制解调处理器 1205时，调制解调处理器1205的上述功能也可以由处理器1203完成。
处理器1203对中继设备1200的动作进行控制管理，用于执行上述本发明实施例中由中继设备1200进行的处理过程。例如，处理器1203还用于执行上述方法实施例中相应的步骤，和/或本申请所描述的技术方案的其他过程。
进一步的，中继设备1200还可以包括存储器1204，存储器1204用于存储用于中继设备1200的程序代码和数据。
参见图13，图13为本发明实施例提供的一种网络侧设备的结构示意图，如图13所示，该网络侧设备1300包括：
发送单元1310，用于向中继设备发送接入网协议层2消息，所述接入网协议层2消息用于建立所述网络侧设备与远端设备之间的接入网链接，所述接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息。
可选地，所述接入网协议层2消息包括第五指示信息，所述第五指示信息用于使所述中继设备确定所述无线承载配置信息对应的所述远端设备。
可选地，所述第五指示信息包括以下消息中的至少一种：
所述远端设备的标识、所述远端设备与所述中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。
可选地，所述接入网协议层2消息使用所述中继设备与所述网络侧设备之间的无线信令承载或无线数据承载进行发送。
可选地，所述接入网协议层2消息为RLC PDU、MAC DPU或PDCP PDU。
可选地，所述发送单元1310还用于：
向所述中继设备发送一个或多个小区临时无线标识，以使所述中继设备将所述一个或多个小区临时无线标识中的一个分配给所述远端设备。
可选地，所述网络侧设备1300还包括：
获取单元1320，用于获取中继设备和远端设备之间的对应关系，所述对应关系用于指示所述中继设备与所述远端设备进行无线通信。
本发明实施例中，通过中继设备建立远端设备与网络侧设备之间的接入网链接，从而使得远端设备不方便与网络侧设备直接通信时，也能成功地接入网 络侧设备，提高网络接入灵活性。
更进一步地，由于通过中继设备建立远端设备与网络侧设备之间的接入网链接，使得远端设备只需要与中继设备进行物理通信，降低远端设备的发射功率，节省远端设备的电量。
更进一步地，由于网络侧设备通过中继设备建立与远端设备之间的接入网链接，使得远端设备快速建立与网络设备的链接，降低远端设备的链接建立时延同时减少了远端设备的信令的发送从而实际上节省远端设备的电量消耗。
在本实施例中，网络侧设备1300是以单元的形式来呈现。这里的“单元”可以指特定应用集成电路(application-specific integrated circuit，ASIC)，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
可以理解的是，本实施例的网络侧设备1300的各功能单元的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可以参照上述方法实施例的相关描述，此处不再赘述。
参见图14，图14为本发明实施例提供的另一种网络侧设备的结构示意图，如图14所示，该网络侧设备1400包括：
发射器/接收器1401和处理器1402。其中，处理器1402也可以为控制器，图14中表示为“控制器/处理器1402”。所述发射器/接收器1401用于支持网络侧设备与上述实施例中的所述终端之间收发信息，以及支持所述终端与其他终端之间进行无线电通信。所述处理器1402执行各种用于与终端通信的功能。在上行链路，来自所述终端的上行链路信号经由天线接收，由接收器1401进行解调(例如将高频信号解调为基带信号)，并进一步由处理器1402进行处理来恢复终端所发送到业务数据和信令信息。在下行链路上，业务数据和信令消息由处理器1402进行处理，并由发射器1401进行调制(例如将基带信号调制为高频信号)来产生下行链路信号，并经由天线发射给终端。需要说明的是，上述解调或调制的功能也可以由处理器1402完成。例如，处理器1402还用于执行上述方法实施例中的相应步骤，和/或本发明实施例所描述的技术方案的其他过程。
进一步的，网络侧设备1400还可以包括存储器1403，存储器1403用于存储 网络侧设备500的程序代码和数据。此外，网络侧设备还可以包括通信单元1404。通信单元1404用于支持网络侧设备与其他网络实体(例如核心网中的网络设备等)进行通信。例如，在LTE系统中，该通信单元1404可以是S1-U接口，用于支持网络侧设备与服务网关(Serving Gateway，SGW)进行通信；或者，该通信单元1404也可以是S1-MME接口，用于支持网络侧设备与移动性管理实体(Mobility Management Entity，MME)进行通信。
可以理解的是，图14仅仅示出了网络侧设备1400的简化设计。在实际应用中，网络侧设备1400可以包含任意数量的发射器，接收器，处理器，控制器，存储器，通信单元等，而所有可以实现本发明实施例的网络侧设备都在本发明实施例的保护范围之内。
参见图15，图15为本发明实施例提供的一种远端设备的结构示意图，如图15所示，该远端设备1500包括：
发送单元1510，用于远端设备的非接入层NAS层根据指示信息得到链接选择结果信息并将所述链路选择结果信息发送给接入层AS层，以使所述AS层根据所述链路选择结果信息确定是否通过所述中继设备建立与所述网络侧设备之间的接入网链接；或者，
确定单元1520，用于所述AS层根据所述指示信息确定是否通过所述中继设备建立与所述网络侧设备之间的接入网链接。
可选地，所述指示信息包括以下至少一种：
EMM登记信息、内部设置信息、通讯实体层状态信息以及数据发送要求信息。
本发明实施例中，通过AS层根据指示信息确定链路选择结果，或由NAS层根据指示信息得到链路选择结果再发送给AS层，从而使得链路选择方式更为灵活，因此也能够进一步提升用户的业务体验。
在本实施例中，远端设备1500是以单元的形式来呈现。这里的“单元”可以指特定应用集成电路(application-specific integrated circuit，ASIC)，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
可以理解的是，本实施例的远端设备1500的各功能单元的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可以参照上述方法实施例的相关描述，此处不再赘述。
参见图16，图16为本发明实施例提供的另一种远端设备的结构示意图，如图16所示，该远端设备1600包括：
发射器1601，接收器1602和处理器1603。其中，处理器1603也可以为控制器，图16中表示为“控制器/处理器1603”。可选的，所述中继设备1600还可以包括调制解调处理器1605，其中，调制解调处理器1605可以包括编码器1606、调制器1607、解码器1608和解调器1605。
在一个示例中，发射器1601调节(例如，模拟转换、滤波、放大和上变频等)该输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中所述的基站。在下行链路上，天线接收上述实施例中基站发射的下行链路信号。接收器1602调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。在调制解调处理器1605中，编码器1606接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器1607进一步处理(例如，符号映射和调制)编码后的业务数据和信令消息并提供输出采样。解调器1609处理(例如，解调)该输入采样并提供符号估计。解码器1608处理(例如，解交织和解码)该符号估计并提供发送给中继设备1600的已解码的数据和信令消息。编码器1606、调制器1607、解调器1609和解码器1608可以由合成的调制解调处理器1605来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE及其他演进系统的接入技术)来进行处理。需要说明的是，当中继设备1600不包括调制解调处理器1605时，调制解调处理器1605的上述功能也可以由处理器1603完成。
处理器1603对中继设备1600的动作进行控制管理，用于执行上述本发明实施例中由中继设备1600进行的处理过程。例如，处理器1603还用于执行上述方法实施例中相应的步骤，和/或本申请所描述的技术方案的其他过程。
进一步的，中继设备1600还可以包括存储器1604，存储器1604用于存储用于中继设备1600的程序代码和数据。
本发明实施例还提供一种计算机存储介质，其中，该计算机存储介质可存储有程序，该程序执行时包括上述方法实施例中记载的任何质量参数的传输方法的部分或全部步骤。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为依据本发明，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置，可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。另一点，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，可以是电性或其它的形式。
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实施例方案的目的。
另外，在本发明的各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个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(可为个人计算机、服务器或者网络设备等)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、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (30)

  1. 一种链接建立方法，其特征在于，所述方法包括：
    中继设备通过所述中继设备与远端设备之间的末梢链路接收所述远端设备发送的第一接入网协议层2消息，所述第一接入网协议层2消息用于表示所述远端设备请求建立网络侧设备与所述远端设备之间的接入网链接；
    根据所述第一接入网协议层2消息对应生成第二接入网协议层2消息并将所述第二接入网协议层2消息发送给所述网络侧设备，所述第二接入网协议层2消息用于请求所述网络侧设备建立所述接入网链接；
    接收所述网络侧设备响应所述第二接入网协议层2消息而返回的第三接入网协议层2消息，所述第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息；
    根据所述第三接入网协议层2消息对应生成第四接入网协议层2消息并将所述第四接入网协议层2消息发送给所述远端设备。
  2. 根据权利要求1所述的方法，其特征在于，所述第一接入网协议层2消息包括第一指示信息，所述第一指示信息用于标识所述远端设备，所述第一指示信息包括以下至少一种信息：
    所述远端设备的标识、所述远端设备的业务类型、所述远端设备的组属性以及所述远端设备的设备类型或者设备等级。
  3. 根据权利要求1或2所述的方法，其特征在于，所述根据所述第一接入网协议层2消息对应生成第二接入网协议层2消息之前，所述方法还包括：
    所述中继设备获取所述第一接入网协议层2消息的所述第一指示信息或末梢无线链路信息，所述末梢无线链路信息包括用于区分所述远端设备的时域或频域物理信息、用于区分所述远端设备的无线链路标识、用于区分所述远端设备的无线链路协议层实体标识信息。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，所述第二接入 网协议层2消息包括第二指示信息，所述第二指示信息用于给所述网络侧设备指示所述第二接入网协议层2消息对应的所述远端设备或指示所述第二接入网协议层2消息是用于所述远端设备请求所述网络侧设备建立所述接入网链接。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，所述第三接入网协议层2消息包括第三指示信息，所述第三指示信息用于使所述中继设备确定所述无线承载配置信息对应的所述远端设备。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，所述第二接入网协议层2消息和/或第三接入网协议层2消息使用所述中继设备与所述网络侧设备之间的无线信令承载或无线数据承载进行发送。
  7. 根据权利要求1至6任一项所述的方法，其特征在于，所述方法还包括：
    所述中继设备从所述网络侧设备获取一个或多个小区临时无线标识，以使所述中继设备将所述一个或多个小区临时无线标识中的一个分配给所述远端设备。
  8. 一种链接建立方法，其特征在于，所述方法包括：
    网络侧设备接收中继设备发送的第二接入网协议层2消息，所述第二接入网协议层2消息用于请求所述网络侧设备建立所述网络侧设备与远端设备之间的接入网链接；
    向所述中继设备发送第三接入网协议层2消息以响应所述第二接入网协议层2消息，所述第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息。
  9. 根据权利要求8所述的方法，其特征在于，所述第三接入网协议层2消息包括第三指示信息，所述第三指示信息用于使所述中继设备确定所述无线 承载配置信息对应的所述远端设备。
  10. 根据权利要求8或9所述的方法，其特征在于，所述方法还包括：
    所述网络侧设备向所述中继设备发送一个或多个小区临时无线标识，以使所述中继设备将所述一个或多个小区临时无线标识中的一个分配给所述远端设备。
  11. 一种链接建立方法，其特征在于，所述方法包括：
    远端设备通过所述远端设备与中继设备之间的末梢链路向所述中继设备发送第一接入网协议层2消息，所述第一接入网协议层2消息用于表示所述远端设备请求建立网络侧设备与所述远端设备之间的接入网链接；
    接收所述网络侧设备返回的第四接入网协议层2消息，所述第四接入网协议层2消息由第三接入网协议层2消息对应生成，所述第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息。
  12. 根据权利要求11所述的方法，其特征在于，所述方法还包括：所述远端设备通过所述第四接入网协议层2消息获取所述远端设备的小区临时无线标识，所述第四接入网协议层2消息包括所述小区临时无线标识。
  13. 一种链路选择方法，其特征在于，所述方法包括：
    远端设备的非接入层NAS层根据指示信息得到链接选择结果信息并将所述链路选择结果信息发送给接入层AS层，以使所述AS层根据所述链路选择结果信息确定是否通过所述中继设备建立与所述网络侧设备之间的接入网链接；或者，
    所述AS层根据所述指示信息确定是否通过所述中继设备建立与所述网络侧设备之间的接入网链接。
  14. 根据权利要求13所述的方法，其特征在于，所述指示信息包括以下至少一种：
    EMM登记信息、内部设置信息、通讯实体层状态信息以及数据发送要求信息。
  15. 一种中继设备，其特征在于，所述中继设备包括：
    接收单元，用于通过所述中继设备与远端设备之间的末梢链路接收所述远端设备发送的第一接入网协议层2消息，所述第一接入网协议层2消息用于表示所述远端设备请求建立网络侧设备与所述远端设备之间的接入网链接；
    生成单元，用于根据所述第一接入网协议层2消息对应生成第二接入网协议层2消息并将所述第二接入网协议层2消息发送给所述网络侧设备，所述第二接入网协议层2消息用于请求所述网络侧设备建立所述接入网链接；
    所述接收单元还用于：接收所述网络侧设备响应所述第二接入网协议层2消息而返回的第三接入网协议层2消息，所述第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息；
    所述生成单元，还用于根据所述第三接入网协议层2消息对应生成第四接入网协议层2消息并将所述第四接入网协议层2消息发送给所述远端设备。
  16. 根据权利要求15所述的中继设备，其特征在于，所述第一接入网协议层2消息包括第一指示信息，所述第一指示信息用于标识所述远端设备，所述第一指示信息包括以下至少一种信息：
    所述远端设备的标识、所述远端设备的业务类型、所述远端设备的组属性以及所述远端设备的设备类型或者设备等级。
  17. 根据权利要求15或16所述的中继设备，其特征在于，所述中继设备还包括：
    获取单元，用于获取所述第一接入网协议层2消息的所述第一指示信息或末梢无线链路信息，所述末梢无线链路信息包括用于区分所述远端设备的时域或频域物理信息、用于区分所述远端设备的无线链路标识、用于区分所述远端设备的无线链路协议层实体标识信息。
  18. 根据权利要求15至17任一项所述的中继设备，其特征在于，所述第二接入网协议层2消息包括第二指示信息，所述第二指示信息用于给所述网络侧设备指示所述第二接入网协议层2消息对应的所述远端设备或指示所述第二接入网协议层2消息是用于所述远端设备请求所述网络侧设备建立所述接入网链接。
  19. 权利权利要求18所述的中继设备，其特征在于，所述第二指示信息包括第二接入网协议层2消息的数据类型以及以下消息中的至少一种：
    所述远端设备的标识、所述远端设备与所述中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。
  20. 根据权利要求15至19任一项所述的中继设备，其特征在于，所述第三接入网协议层2消息包括第三指示信息，所述第三指示信息用于使所述中继设备确定所述无线承载配置信息对应的所述远端设备。
  21. 根据权利要求15至20任一项所述的中继设备，其特征在于，所述第三指示信息包括第二接入网协议层2消息的数据类型以及以下消息中的至少一种：
    所述远端设备的标识、所述远端设备与所述中继设备之间的末梢链路标识以及对应于远端设备的中继协议处理实体标识。
  22. 根据权利要求15至21任一项所述的中继设备，其特征在于，所述第二接入网协议层2消息和/或第三接入网协议层2消息使用所述中继设备与所述网络侧设备之间的无线信令承载或无线数据承载进行发送。
  23. 根据权利要求15至22任一项所述的中继设备，其特征在于，所述获取单元还用于：从所述网络侧设备获取一个或多个小区临时无线标识，以使所述中继设备将所述一个或多个小区临时无线标识中的一个分配给所述远端设备。
  24. 一种网络侧设备，其特征在于，所述网络侧设备包括:
    接收单元，用于接收中继设备发送的第二接入网协议层2消息，所述第二接入网协议层2消息用于请求所述网络侧设备建立所述网络侧设备与远端设备之间的接入网链接；
    发送单元，用于向所述中继设备发送第三接入网协议层2消息以响应所述第二接入网协议层2消息，所述第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息。
  25. 根据权利要求24所述的网络侧设备，其特征在于，所述第三接入网协议层2消息包括第三指示信息，所述第三指示信息用于使所述中继设备确定所述无线承载配置信息对应的所述远端设备。
  26. 根据权利要求24或25所述的网络侧设备，其特征在于，所述发送单元，还用于：向所述中继设备发送一个或多个小区临时无线标识，以使所述中继设备将所述一个或多个小区临时无线标识中的一个分配给所述远端设备。
  27. 一种远端设备，其特征在于，所述远端设备包括：
    发送单元，用于通过所述远端设备与中继设备之间的末梢链路向所述中继设备发送第一接入网协议层2消息，所述第一接入网协议层2消息用于表示所述远端设备请求建立网络侧设备与所述远端设备之间的接入网链接；
    接收单元，用于接收所述网络侧设备返回的第四接入网协议层2消息，所述第四接入网协议层2消息由第三接入网协议层2消息对应生成，所述第三接入网协议层2消息包括所述远端设备与所述网络侧设备之间的无线承载配置信息。
  28. 根据权利要求27所述的远端设备，其特征在于，所述远端设备还包括：
    获取单元，用于通过所述第四接入网协议层2消息获取所述远端设备的小 区临时无线标识，所述第四接入网协议层2消息包括所述小区临时无线标识。
  29. 一种远端设备，其特征在于，所述远端设备包括：
    发送单元，用于远端设备的非接入层NAS层根据指示信息得到链接选择结果信息并将所述链路选择结果信息发送给接入层AS层，以使所述AS层根据所述链路选择结果信息确定是否通过所述中继设备建立与所述网络侧设备之间的接入网链接；或者，
    确定单元，用于所述AS层根据所述指示信息确定是否通过所述中继设备建立与所述网络侧设备之间的接入网链接。
  30. 根据权利要求29所述的远端设备，其特征在于，所述指示信息包括以下至少一种：
    EMM登记信息、内部设置信息、通讯实体层状态信息以及数据发送要求信息。
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