WO2018036304A1 - 间接通信方法、中继节点、网络设备和系统 - Google Patents

间接通信方法、中继节点、网络设备和系统 Download PDF

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Publication number
WO2018036304A1
WO2018036304A1 PCT/CN2017/093398 CN2017093398W WO2018036304A1 WO 2018036304 A1 WO2018036304 A1 WO 2018036304A1 CN 2017093398 W CN2017093398 W CN 2017093398W WO 2018036304 A1 WO2018036304 A1 WO 2018036304A1
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Prior art keywords
terminal device
message
relay node
downlink
core network
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PCT/CN2017/093398
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English (en)
French (fr)
Inventor
李建
赵军
刁文波
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华为技术有限公司
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Publication of WO2018036304A1 publication Critical patent/WO2018036304A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and in particular, to an indirect communication method, a relay node, a network device, and a system.
  • Terminal devices typically access the network directly for communication.
  • the terminal device may need to access the network indirectly through other relay nodes (such as mobile terminals or gateway devices) in the vicinity to communicate.
  • the relay node when the terminal device is connected to the relay node by a short-distance connection method such as Bluetooth (English name: bluetooth, English abbreviation: BT), WiFi (English full name: wireless fidelity, full name: wireless fidelity),
  • Bluetooth English name: bluetooth, English abbreviation: BT
  • WiFi English full name: wireless fidelity
  • the terminal device accesses the network as the relay node
  • the network side cannot identify the terminal device, and thus the terminal device and the relay node cannot be differentially managed.
  • the terminal device and the relay node cannot be connected to different servers. .
  • the embodiments of the present invention provide an indirect communication method, a relay node, a network device, and a system, which are used to solve the problem that the terminal device accesses the network as the identity of the relay node, so that the network side cannot identify the terminal device.
  • an embodiment of the present invention provides an indirect communication method, where the method includes: a relay node receives a terminal device message from a terminal device, where the terminal device message includes terminal device identity information; and the relay node sends the terminal device message Encapsulating in the relay node message, and indicating that the encapsulated content is a terminal device message in the relay node message; the relay node sends the relay node message to the network selection device, and the relay node message is used by the network selection device according to the The terminal device identity information determines the core network to which the terminal device belongs, and the network selection device sends the terminal device message to the first core network device corresponding to the core network to which the terminal device belongs, and the corresponding first core network device performs subsequent processing on the terminal device message.
  • the relay node after receiving the terminal device message from the terminal device, the relay node encapsulates the terminal device message in the relay node message, and indicates that the encapsulated content is the terminal device in the relay node message.
  • the message is then forwarded to the network selection device, and the network selection device obtains the core network corresponding to the terminal device according to the terminal device identity information in the relay node message, and then forwards the corresponding core network device to the corresponding first core network device, and the first core network device pair
  • the terminal device message is subsequently processed, so that the network side can identify the identity of the terminal device.
  • the information is processed and processed accordingly, so that the terminal device message and the signaling or data of the relay node's own service are separately managed, and the terminal device accesses the network as the relay node, so that the network The side does not recognize the problem with the terminal device.
  • indicating that the encapsulated content is a terminal device message in the relay node message includes: indicating, by the customized relay node signaling, the encapsulated content as a terminal device message in the relay node message. This design provides a way to indicate the contents of the package.
  • indicating that the encapsulated content is a terminal device message in the relay node message includes: indicating, in the relay node message, the encapsulated content by using a newly added cell in the existing relay node signaling Terminal device message. This design provides a way to indicate the contents of the package.
  • the network selection device selects a network element or a core network device for an independent network. This design enables the network selection device of the present invention to be applied to different network elements.
  • the relay node message further includes relay node identity information
  • the relay node identity information is used by the network selection device to add the relay node identity information to the terminal device message to generate a new terminal device.
  • sending the message to the first core network device where the first core network device stores the relay node identity information and the terminal device identity information in the new terminal device message in the local context for performing the downlink device on the downlink device.
  • the design is to save the relay node identity information in the local context. When the downlink data is downlink addressed, the corresponding relay node can be found according to the relay node identity information.
  • the relay node message further includes access side information, where the access side information is used by the network selection device to add the access side information to the terminal device message, and the first core network device resolves the terminal.
  • the device message obtains the access side information, and the first core network device stores the access side information in the local context for addressing the terminal device in the downlink addressing, or is stored in the node management module for being managed by the node.
  • the module manages the relay node and its location. The design is to save the access side information in the local context. When the downlink data is downlink addressed, the corresponding relay node can be found according to the access side information.
  • the relay node message further includes a terminal device access identifier, where the terminal device access identifier is used by the network selection device to add the terminal device access identifier to the terminal device message, by the first core network.
  • the device parsing the terminal device message obtains the terminal device access identifier, and the first core network device stores the terminal device access identifier in the local context for addressing the terminal device during downlink addressing.
  • the design is to save the terminal device access identifier in the local context. When the downlink data is downlink addressed, the corresponding terminal device can be found according to the terminal device access identifier.
  • the relay node message is carried on the signaling plane bearer or data plane of the relay node. This design makes it suitable for the delivery of large data packets when carried by the data plane.
  • the method further includes: the relay node receiving the downlink relay node message, wherein the downlink relay node message is from the first core network device according to the relay node identity information in the downlink terminal device message
  • the downlink terminal device message is encapsulated, and the downlink terminal device message is generated by the first core network device according to the downlink data and the local context, where the local context includes the relay node identity information and the terminal device access identifier, and the downlink terminal device message is used.
  • the downlink data, the relay node identity information, and the terminal device access identifier are included; the relay node parses the downlink relay node message to obtain the downlink terminal device message and the terminal device access identifier, and finds the corresponding terminal according to the terminal device access identifier.
  • the relay node sends a downlink terminal device message to the corresponding terminal device.
  • the design is implemented
  • the local context established by means of the uplink direction provides assistance for the downlink data to address the relay node and the terminal device, thereby implementing down
  • an embodiment of the present invention provides an indirect communication method, where the method includes: the network selection device receives a relay node message from a relay node, where the relay node message encapsulates a terminal device message from the terminal device. And indicating, in the relay node message, that the encapsulated content is a terminal device message, where the terminal device message includes the terminal device identity information; the network selection device determines, according to the terminal device identity information in the relay node message, the core network to which the terminal device belongs; The selecting device sends the terminal device message to the first core network device corresponding to the core network to which the terminal device belongs, and the corresponding first core network device performs subsequent processing on the terminal device message.
  • the indirect communication method provided by the embodiment of the present invention, after receiving the terminal device message from the terminal device, the relay node encapsulates the terminal device message in the relay node message, and indicates that the encapsulated content is the terminal device in the relay node message.
  • the message is then forwarded to the network selection device, and the network selection device obtains the core network corresponding to the terminal device according to the terminal device identity information in the relay node message, and then forwards the corresponding core network device to the corresponding first core network device, and the first core network device pair
  • the terminal device message performs subsequent processing, so that the network side can identify the identity information of the terminal device and perform corresponding processing, thereby further performing differential management on the terminal device message and the signaling or data for the service transmission of the relay node itself.
  • the problem that the terminal device accesses the network as the relay node and the network side cannot recognize the terminal device is solved.
  • the network selection device selects a network element or a core network device for an independent network. This design enables the network selection device of the present invention to be applied to different network elements.
  • the network selection device determines, according to the terminal device identity information in the relay node message, the core network to which the terminal device belongs, including: the network selection device determines, according to the encapsulated content indicated by the relay node message, when the relay node message When the encapsulated content is a terminal device message, the network selection device decapsulates the relay node message to obtain the terminal device message, and the network selection device decapsulates the terminal device message to obtain the terminal device identity information, and the network selection device according to the terminal device The identity information determines the core network to which the terminal device belongs.
  • the design enables the relay node to perform corresponding processing according to the encapsulated content in the relay node message.
  • the core network to which the terminal device belongs can be determined according to the terminal device identity information.
  • the network selection device determines, according to the terminal device identity information, the core network to which the terminal device belongs, including: the network selection device acquires the subscription information of the terminal device from the user database according to the terminal device identity information, and is selected by the network. The device determines the core network to which the terminal device belongs according to the subscription information of the terminal device.
  • the design provides a method for judging the core network to which the terminal device belongs according to the identity information of the terminal device.
  • the network selection device sends the terminal device message to the first core network device corresponding to the core network to which the terminal device belongs, and the corresponding first core network device performs subsequent processing on the terminal device message, including: The device selects the core network device corresponding to the core network to which the terminal device belongs, and the network selection device performs subsequent processing on the terminal device message. Otherwise, the network selection device forwards the terminal device message to the first core corresponding to the core network to which the terminal device belongs. The network device performs subsequent processing on the terminal device message by the first core network device.
  • the design enables the embodiment of the present invention to perform subsequent processing on the terminal device message according to the core network device corresponding to the core network to which the terminal device belongs.
  • the method further includes: the network selection device decapsulating the relay node message and obtaining the relay node identity information, and the network selection device adds the relay node identity information to the terminal device message to generate The new terminal device message is sent to the first core network device, and the first core network device sends the new terminal device message
  • the relay node identity information and the terminal device identity information are stored in the local context for addressing the terminal device during downlink addressing, or are stored in the node management module for the relay node and its location by the node management module Management is performed, wherein the relay node message includes relay node identity information.
  • the design is to save the relay node identity information in the local context. When the downlink data is downlink addressed, the corresponding relay node can be found according to the relay node identity information.
  • the method further includes: the network selection device decapsulating the relay node message to obtain the access side information, and the network selection device adds the access side information to the terminal device message and sends the information to the terminal device.
  • a core network device wherein the first core network device stores the access side information in the terminal device message in a local context for addressing the terminal device during downlink addressing, or stored in the node management module for The node management module manages the relay node and its location.
  • the design is to save the access side information in the local context. When the downlink data is downlink addressed, the corresponding relay node can be found according to the access side information.
  • the method further includes: the network selecting device decapsulating the relay node message to obtain the terminal device access identifier, and adding, by the network selecting device, the terminal device access identifier to the terminal device message and sending For the first core network device, the first core network device stores the terminal device access identifier in the terminal device message in the local context for addressing the terminal device during downlink addressing.
  • the design is to save the terminal device access identifier in the local context. When the downlink data is downlink addressed, the corresponding terminal device can be found according to the terminal device access identifier.
  • the relay node message is carried on the signaling plane bearer or data plane of the relay node. This design makes it suitable for the delivery of large data packets when carried by the data plane.
  • the method further includes: the network selecting device receiving the downlink terminal device message, wherein the downlink terminal device message is generated by the first core network device according to the downlink data and the local context, and the local context includes the relay node identity information And the terminal device access identifier, where the downlink terminal device message includes downlink data, relay node identity information, and terminal device access identifier; and the network selection device encapsulates the downlink terminal device message according to the relay node identity information in the downlink terminal device message.
  • the network selection device sends a downlink relay node message to the relay node, and the downlink relay node message is used by the relay node to parse the downlink relay node message to obtain the downlink terminal device message and the terminal device
  • the identifier is entered, and the relay node finds the corresponding terminal device according to the terminal device access identifier, and the relay node sends the downlink terminal device message to the corresponding terminal device.
  • the design realizes the assistance of addressing the relay node and the terminal device by means of the local context established by the uplink direction, thereby implementing downlink indirect communication.
  • an embodiment of the present invention provides an indirect communication method, where the method includes: receiving, by a first core network device, a terminal device message from a terminal device, where the first core network device is a core of the terminal device.
  • the core network device corresponding to the network, the core network to which the terminal device belongs is determined by the network selection device according to the terminal device identity information in the relay node message, and the relay node message is a relay node that encapsulates the terminal device message, and is in the middle
  • the terminal message indicates that the encapsulated content is a terminal device message, and the terminal device message includes the terminal device identity information; the first core network device performs subsequent processing on the terminal device message.
  • the indirect communication method after receiving the terminal device message from the terminal device, the relay node encapsulates the terminal device message in the relay node message, and indicates that the encapsulated content is the terminal device in the relay node message.
  • the message is then forwarded to the network selection device, and the network selection device obtains the core network corresponding to the terminal device according to the terminal device identity information in the relay node message, and then Forwarding to the corresponding first core network device, the first core network device performs subsequent processing on the terminal device message, so that the network side can identify the identity information of the terminal device, and perform corresponding processing, and then the terminal device message can be
  • the signaling or data sent by the node itself is differentiated and managed, which solves the problem that the terminal device accesses the network as the identity of the relay node, so that the network side cannot identify the terminal device.
  • the network selection device selects a network element or a core network device for an independent network. This design enables the network selection device of the present invention to be applied to different network elements.
  • the method further includes: the first core network device parsing the new terminal device message to obtain the relay node identity information and the terminal device identity information, wherein the new terminal device message is relayed by the network selection device
  • the node identity information is generated by adding to the terminal device message; the first core network device stores the relay node identity information and the terminal device identity information in the context for addressing the terminal device during downlink addressing, or storing the node device
  • the management module is used to manage the relay node and its location by the node management module. The design is to save the relay node identity information in the local context. When the downlink data is downlink addressed, the corresponding relay node can be found according to the relay node identity information.
  • the method further includes: the first core network device parsing the new terminal device message to obtain access side information, wherein the new terminal device message is added by the network selection device to the terminal device Generating in the message; the first core network device stores the access side information in the context for addressing the terminal device during downlink addressing, or is stored in the node management module for the relay node by the node management module And where it is managed.
  • the design is to save the access side information in the local context. When the downlink data is downlink addressed, the corresponding relay node can be found according to the access side information.
  • the method further includes: the first core network device parsing the new terminal device message to obtain the terminal device access identifier, wherein the new terminal device message is added by the network selecting device to the terminal device access identifier to Generated in the terminal device message; the first core network device stores the terminal device access identifier in the context for addressing the terminal device during downlink addressing.
  • the design is to save the terminal device access identifier in the local context. When the downlink data is downlink addressed, the corresponding terminal device can be found according to the terminal device access identifier.
  • the relay node message is carried on the signaling plane bearer or data plane of the relay node. This design makes it suitable for the delivery of large data packets when carried by the data plane.
  • the method further includes: the first core network device receives the downlink data; the first core network device generates the downlink terminal device message according to the downlink data and the local context, where the local context includes the relay node identity information and
  • the terminal device access identifier includes: downlink data, relay node identity information, and terminal device access identifier; the first core network device sends the downlink terminal device message to the network selection device, and the downlink terminal device message is used by
  • the network selection device encapsulates the downlink terminal device message in the downlink relay node message according to the relay node identity information in the downlink terminal device message, and the relay node parses the downlink relay node message to obtain the downlink terminal device message and the terminal device connection.
  • the identifier is entered, and the relay node finds the corresponding terminal device according to the terminal device access identifier, and the relay node sends the downlink terminal device message to the corresponding terminal device.
  • the design realizes the assistance of addressing the relay node and the terminal device by means of the local context established by the uplink direction, thereby implementing downlink indirect communication.
  • an embodiment of the present invention provides an indirect communication method, where the method includes: a relay node receives a terminal device message from a terminal device, where the terminal device message includes terminal device identity information; The terminal device message is parsed to obtain the content of the terminal device message, and the proxy terminal device message is configured to initiate the message according to the content of the terminal device message, where the proxy terminal device message includes the terminal device identity information; the relay node will proxy The terminal device message is sent to the network selection device, and the proxy terminal device message is used to determine, by the network selection device, the core network to which the terminal device belongs according to the terminal device identity information, and the network selection device sends the proxy terminal device message to the core network to which the terminal device belongs.
  • the corresponding first core network device performs subsequent processing on the proxy terminal device message by the corresponding first core network device.
  • the indirect communication method provided by the embodiment of the present invention constructs a proxy terminal device message by using a relay node to simulate a terminal device message, where the proxy terminal device message includes the terminal device identity information, and then forwards the message to the network selection device, and the network selection device according to the network selection device.
  • the terminal device identity information in the relay node message is obtained by the core network corresponding to the terminal device, and then forwarded to the corresponding first core network device, and the first core network device performs subsequent processing on the terminal device message, so that the network side can identify the terminal.
  • the identity information of the device is processed accordingly, so that the terminal device message and the signaling or data sent by the relay node itself can be differentiated and managed, and the terminal device accesses the network as the identity of the relay node.
  • the network selection device selects a network element or a core network device for an independent network. This design enables the network selection device of the present invention to be applied to different network elements.
  • the method further includes: the proxy terminal device message further includes access side information, where the access side information is used by the first core network device access side information to be stored in the local context for downlinking
  • the terminal device is addressed during addressing or stored in the node management module for managing the relay node and its location by the node management module.
  • the design is to save the access side information in the local context.
  • the downlink data is downlink addressed, the corresponding relay node can be found according to the access side information.
  • the method further includes: the proxy terminal device message further includes a terminal device access identifier, where the terminal device access identifier is used by the first core network device to store the terminal device access identifier in the local context. Used to address the terminal device during downstream addressing.
  • the design is to save the terminal device access identifier in the local context.
  • the method further includes: the relay node receives the downlink terminal device message, wherein the downlink terminal device message is generated by the first core network device according to the downlink data and the local context, and the relay node is the network selection device according to the The terminal device identity information in the downlink terminal device message is found by using downlink addressing, where the local context includes the terminal device identity information and the terminal device access identifier, and the downlink terminal device message includes downlink data, terminal device identity information, and terminal device access.
  • the relay node parses the downlink terminal device message, and the relay node finds the corresponding terminal device according to the terminal device identity access identifier in the downlink terminal device message; the relay node sends the downlink terminal device message to the corresponding terminal device.
  • the design realizes the assistance of addressing the relay node and the terminal device by means of the local context established by the uplink direction, thereby implementing downlink indirect communication.
  • an embodiment of the present invention provides an indirect communication method, where the method includes: the network selection device receives a proxy terminal device message, where the proxy terminal device message is configured by the relay node according to the content of the terminal device message, and the proxy The terminal device message is used by the relay node to initiate a message with the identity of the terminal device, and the content of the terminal device message is obtained by the relay node parsing the terminal device message from the terminal device, and the terminal device message includes the terminal device identity information, and the proxy terminal The device message includes the terminal device identity information; the network selection device determines, according to the terminal device identity information in the proxy terminal device message, the core network to which the terminal device belongs; the network selection device will proxy the terminal device message The first core network device corresponding to the core network to which the terminal device belongs is sent, and the corresponding first core network device performs subsequent processing on the proxy terminal device message.
  • the indirect communication method provided by the embodiment of the present invention constructs a proxy terminal device message by using a relay node to simulate a terminal device message, where the proxy terminal device message includes the terminal device identity information, and then forwards the message to the network selection device, and the network selection device according to the network selection device
  • the terminal device identity information in the relay node message is obtained by the core network corresponding to the terminal device, and then forwarded to the corresponding first core network device, and the first core network device performs subsequent processing on the terminal device message, so that the network side can identify the terminal.
  • the identity information of the device is processed accordingly, so that the terminal device message and the signaling or data sent by the relay node itself can be differentiated and managed, and the terminal device accesses the network as the identity of the relay node.
  • the problem that the network side cannot recognize the terminal device.
  • the network selection device selects a network element or a core network device for an independent network. This design enables the network selection device of the present invention to be applied to different network elements.
  • the network selection device determines, according to the terminal device identity information in the proxy terminal device message, the core network to which the terminal device belongs, including: the network selection device acquires from the user database according to the terminal device identity information in the proxy terminal device message.
  • the subscription information of the terminal device, and the network selection device determines the core network to which the terminal device belongs according to the subscription information of the terminal device.
  • the design provides a method for judging the core network to which the terminal device belongs according to the identity information of the terminal device.
  • the network selection device sends a proxy terminal device message to the first core network device corresponding to the core network to which the terminal device belongs, and the corresponding first core network device performs subsequent processing on the proxy terminal device message, including If the network selection device is the core network device corresponding to the core network to which the terminal device belongs, the network selection device performs subsequent processing on the proxy terminal device message; otherwise, the network selection device forwards the proxy terminal device message to the core network to which the terminal device belongs. Corresponding first core network device, the first core network device performs subsequent processing on the proxy terminal device message.
  • the design enables the embodiment of the present invention to perform subsequent processing on the terminal device message according to the core network device corresponding to the core network to which the terminal device belongs.
  • the method further includes: the network selecting device receiving the downlink terminal device message, wherein the downlink terminal device message is generated by the first core network device according to the downlink data and the local context, and the local context includes the terminal device identity information and The terminal device access identifier, the downlink terminal device message includes downlink data, terminal device identity information, and terminal device access identifier; the network selection device performs downlink addressing according to the terminal device identity information in the downlink terminal device message to find a corresponding relay node.
  • the network selection device sends the downlink terminal device message to the corresponding relay node, and the corresponding relay node parses the downlink terminal device message, and the corresponding relay node finds the terminal device access identifier according to the downlink terminal device message.
  • Corresponding terminal device, and the corresponding relay node sends the downlink terminal device message to the corresponding terminal device.
  • the design realizes the assistance of addressing the relay node and the terminal device by means of the local context established by the uplink direction, thereby implementing downlink indirect communication.
  • an embodiment of the present invention provides an indirect communication method, where the method includes: a first core network device receives a proxy terminal device message from a network selection device, where the first core network device is a core network to which the terminal device belongs The core network device, the core network to which the terminal device belongs is determined by the network selection device according to the terminal device identity information in the proxy terminal device message, and the proxy terminal device message is constructed by the relay node according to the content of the terminal device message, and the proxy terminal device message is used.
  • the relay node initiates a message in the identity of the terminal device, and the content of the terminal device message is obtained by the relay node parsing the terminal device message from the terminal device, and the terminal device message includes the terminal device identity information, and the proxy terminal device message includes Terminal device identity information; the first core network device performs subsequent operations on the terminal device message Reason.
  • the indirect communication method provided by the embodiment of the present invention constructs a proxy terminal device message by using a relay node to simulate a terminal device message, where the proxy terminal device message includes the terminal device identity information, and then forwards the message to the network selection device, and the network selection device according to the network selection device
  • the terminal device identity information in the relay node message is obtained by the core network corresponding to the terminal device, and then forwarded to the corresponding first core network device, and the first core network device performs subsequent processing on the terminal device message, so that the network side can identify the terminal.
  • the identity information of the device is processed accordingly, so that the terminal device message and the signaling or data sent by the relay node itself can be differentiated and managed, and the terminal device accesses the network as the identity of the relay node.
  • the problem that the network side cannot recognize the terminal device.
  • the network selection device selects a network element or a core network device for an independent network. This design enables the network selection device of the present invention to be applied to different network elements.
  • the method further includes: the first core network device parsing the proxy terminal device message to obtain access side information, and the access side information is carried by the relay node in the proxy terminal device message; the first core network device The access side information is stored in the context for addressing the terminal device during downlink addressing, or stored in the node management module for managing the relay node and its location by the node management module.
  • the design is to save the access side information in the local context. When the downlink data is downlink addressed, the corresponding relay node can be found according to the access side information.
  • the method further includes: the first core network device parsing the proxy terminal device message to obtain the terminal device access identifier, and the terminal device access identifier is carried by the relay node in the proxy terminal device message;
  • the network device stores the terminal device access identifier in the context for addressing the terminal device during downstream addressing.
  • the design is to save the terminal device access identifier in the local context. When the downlink data is downlink addressed, the corresponding terminal device can be found according to the terminal device access identifier.
  • the relay node message is carried on the signaling plane bearer or data plane of the relay node. This design makes it suitable for the delivery of large data packets when carried by the data plane.
  • the method further includes: the first core network device receives the downlink data; the first core network device generates the downlink terminal device message according to the downlink data and the local context, where the local context includes the terminal device identity information and the terminal The device access identifier, the downlink terminal device message includes downlink data, terminal device identity information, and terminal device access identifier; the first core network device sends the downlink terminal device message to the network selection device, and the downlink terminal device message is used for selecting by the network.
  • the device performs downlink addressing according to the terminal device identity information in the downlink terminal device message to find a corresponding relay node, and forwards the downlink terminal device message to the corresponding relay node, and the corresponding relay node parses the downlink terminal device message.
  • the corresponding relay node finds the corresponding terminal device according to the terminal device access identifier in the downlink terminal device message, and the corresponding relay node sends the downlink terminal device message to the corresponding terminal device.
  • the design realizes the assistance of addressing the relay node and the terminal device by means of the local context established by the uplink direction, thereby implementing downlink indirect communication.
  • the embodiment of the present invention provides a relay node, where the relay node can implement the functions performed by the relay node in the foregoing method example, and the function can be implemented by hardware, or the corresponding software can be executed by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the apparatus includes a processor and a transceiver configured to support the apparatus to perform the corresponding functions of the above methods.
  • the transceiver is used to support communication between the device and other network elements.
  • the apparatus can also include a memory for coupling with the processor that retains the program instructions and data necessary for the apparatus.
  • the embodiment of the present invention provides a network selection device, which can implement the functions performed by the network selection device in the foregoing method embodiment, and the functions can be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the apparatus includes a processor and a communication interface configured to support the apparatus to perform the corresponding functions of the above methods.
  • the communication interface is used to support communication between the device and other network elements.
  • the apparatus can also include a memory for coupling with the processor that retains the program instructions and data necessary for the apparatus.
  • the embodiment of the present invention provides a first core network device, where the device can implement the functions performed by the first core network device in the foregoing method embodiment, where the function can be implemented by hardware or by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the apparatus includes a processor and a communication interface configured to support the apparatus to perform the corresponding functions of the above methods.
  • the communication interface is used to support communication between the device and other network elements.
  • the apparatus can also include a memory for coupling with the processor that retains the program instructions and data necessary for the apparatus.
  • an embodiment of the present invention provides a communication system, where the system includes the device that can implement the function of the relay node, the device that can implement the function of the network selection device, and the first core network device. Functional device.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the relay node, including a program designed to perform the above aspects.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use in the network selection device, including a program designed to perform the above aspects.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use in the first core network device, including a program designed to perform the above aspects.
  • the relay node directly communicates with the network side, and supports the terminal device to communicate with the network side indirectly through the relay node, and in the indirect communication, the relay device forwards and includes a terminal device message of the terminal device identity information, the relay node encapsulating the terminal device message in the relay device message and indicating that the encapsulated content is a terminal device message, or parsing the terminal device message to obtain the content of the terminal device message, and according to the terminal device
  • the content of the message reconstructs the manner of the proxy terminal device message, and then forwards the generated message to the network side, so that the network side can obtain the terminal device identity information and identify the terminal device accordingly, and independently manage the terminal device and the relay node.
  • independent ID, subscription, access authentication, charging, etc. and the terminal device and the relay node can access different core networks, thereby solving the solution that the terminal device accesses the network as the identity of the relay node, so that the network side The problem with the terminal device is not recognized.
  • FIG. 1 is a schematic structural diagram of a network communication system according to an embodiment of the present invention.
  • FIG. 2 is a hardware structural diagram of a relay node according to an embodiment of the present invention.
  • FIG. 3 is a hardware structural diagram of a network selection device according to an embodiment of the present invention.
  • FIG. 4 is a hardware structural diagram of a first core network device according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart diagram of a first indirect communication method according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart diagram of a second indirect communication method according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart diagram of a third indirect communication method according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart diagram of a fourth indirect communication method according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart diagram of a fifth indirect communication method according to an embodiment of the present invention.
  • FIG. 10 is a schematic flowchart diagram of a sixth indirect communication method according to an embodiment of the present invention.
  • FIG. 11 is a schematic flowchart diagram of a seventh indirect communication method according to an embodiment of the present invention.
  • FIG. 12 is a schematic flowchart diagram of an eighth indirect communication method according to an embodiment of the present invention.
  • FIG. 13 is a schematic flowchart diagram of a ninth indirect communication method according to an embodiment of the present invention.
  • FIG. 14 is a schematic flowchart diagram of a tenth indirect communication method according to an embodiment of the present invention.
  • FIG. 15 is a schematic flowchart diagram of an eleventh indirect communication method according to an embodiment of the present invention.
  • FIG. 16 is a schematic flowchart diagram of a twelfth indirect communication method according to an embodiment of the present invention.
  • FIG. 17 is a schematic flowchart diagram of a thirteenth indirect communication method according to an embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of a relay node according to an embodiment of the present invention.
  • FIG. 19 is a schematic structural diagram of still another relay node according to an embodiment of the present invention.
  • FIG. 20 is a schematic structural diagram of another relay node according to an embodiment of the present invention.
  • FIG. 21 is a schematic structural diagram of a network selection device according to an embodiment of the present invention.
  • FIG. 22 is a schematic structural diagram of still another network selection device according to an embodiment of the present invention.
  • FIG. 23 is a schematic structural diagram of another network selection device according to an embodiment of the present invention.
  • FIG. 24 is a schematic structural diagram of a core network device according to an embodiment of the present invention.
  • FIG. 25 is a schematic structural diagram of still another core network device according to an embodiment of the present invention.
  • FIG. 26 is a schematic structural diagram of another core network device according to an embodiment of the present invention.
  • a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread in execution, a program, and/or a computer.
  • an application running on a computing device and the computing device can be a component.
  • One or more components can reside within a process and/or thread of execution, and a component can be located in a computer and/or distributed between two or more computers.
  • these components can have various data from them
  • the structure is executed in a variety of computer readable media.
  • These components may be passed, for example, by having one or more data packets (eg, data from one component that interacts with the local system, another component of the distributed system, and/or signaled through, such as the Internet)
  • the network interacts with other systems to communicate in a local and/or remote process.
  • the present application describes various aspects in connection with a wireless network device that can be used to communicate with one or more relay nodes;
  • the terminal device can be a user device that can be used for communication with one or more user devices (For example, D2D (English full name: device to device), which can communicate with one or more access network devices).
  • the relay node may be a user equipment and may include a system, a subscriber unit, a subscriber station, a mobile station, a mobile wireless terminal, a mobile device, a node, a device, a remote station, a remote terminal, a terminal, a wireless communication device, a wireless communication device, or a user.
  • the relay node can be a cellular phone, a cordless phone, a session initiation protocol (English name: session initiation protocol, SIP for short), a smart phone, a wireless local loop (English name: wireless local loop, referred to as: WLL) station, individual Digital assistant (full name: personal digital assistant, PDA for short), laptop computer, handheld communication device, handheld computing device, satellite wireless device, wireless modem card, and/or other communication for wireless communication Processing equipment.
  • An access network device may also be referred to as an access point, a node, a Node B, an evolved Node B (eNB), or some other network entity, and may include some or all of the functions of the above network entities.
  • the access network device can communicate with the relay node over the air interface.
  • the access network device can be used as a router between the wireless terminal and the rest of the access network by converting the received air interface frame into an IP packet, wherein the access network includes an internet protocol (English name: internet protocol) , referred to as: IP) network.
  • IP internet protocol
  • the access network device can also coordinate the management of air interface attributes and can also be a gateway between the wired network and the wireless network.
  • the application will present various aspects, embodiments, or features in a system that can include multiple devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, a combination of these schemes can also be used.
  • the word "exemplary” is used to mean an example, an illustration, or a description. Any embodiment or design described as “example” in this application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the term use examples is intended to present concepts in a concrete manner.
  • information, signal, message, and channel may sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the difference is not emphasized. “(of)” “corresponding (relevant)” and “corresponding” can sometimes be mixed. It should be noted that the meanings to be expressed are consistent when the distinction is not emphasized.
  • the network architecture and the service scenario described in the embodiments of the present invention are used to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention.
  • the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.
  • the embodiment of the present invention can be applied to a time division duplexing (TDD) scenario or a frequency division duplexing (FDD) scenario.
  • TDD time division duplexing
  • FDD frequency division duplexing
  • the embodiment of the present invention is described in the context of a 4G network in a wireless communication network. It should be noted that the solution in the embodiment of the present invention may also be applied to LTE and its evolution technology, such as 5G, and the corresponding name may also be used in other wireless communications. The name of the corresponding function in the network is replaced.
  • first and second are used for descriptive purposes only, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, thereby defining "first”, “first” A feature of "two” may include one or more of the features, either explicitly or implicitly.
  • the “first” and “second” in the following embodiments are only used for the difference, such as the first core network device and the second core network device.
  • the embodiment of the present invention provides a network communication system.
  • the system includes: a terminal device 11 , a relay node (English name: relay node) 12 , and an access network device (English abbreviation: AN, English)
  • the full name: access network) 13 the network selection device 14, the first core network device (English name: core network) 15, optionally, the system may also include a server (English full name: server) 16.
  • the network selection device 14 may include a network selection function (network selection function) or a second core network device.
  • the network selection device 14 is mainly used to complete core network selection and message distribution according to the subscription information of the terminal device or the relay node.
  • the network selection device in the embodiment of the present invention may be an independent network selection network element, or may be a second core network device.
  • the second core network device and the first core network device belong to the core network device, and the second core network device may be based on the terminal device or the relay node in the message that receives the terminal device or the relay node.
  • the identity information is used to query the corresponding subscription information from the user database, and the core network to which the terminal device or the relay node belongs is determined according to the subscription information. If the first device belongs to the core network to which the terminal device or the relay node belongs, The received data is subjected to subsequent processing.
  • the second core network device searches for the first core network device belonging to the core network, and receives the The obtained data is forwarded to the first core network device, and the first core network device performs subsequent processing; the subsequent processing may include but is not limited to attach/register, authentication, encryption, access control, terminal management, mobility management, and datagram. Text routing and forwarding, policy control, accounting, forwarding data to the server, etc.
  • the terminal device 11 may include, for example, an M2M (full name: machine to machine) terminal, a smart wristband, etc.; the relay node 12 may include, for example, a mobile phone terminal, a gateway device, etc.; The message or data from the relay node is forwarded to the network selection network element or the second core network device.
  • the access network device 13 may be, for example, 3GPP (English name: 3rd generation partnership project, full name in Chinese: The third-generation partner program) eNodeB (English full name: evolved node B, Chinese full name: evolved node B), or AP in the WiFi protocol (English full name: access point, Chinese full name: access point), etc.
  • the eNodeB is used as an example in the embodiment of the present invention.
  • the first core network device 15 is mainly used to provide attachment/registration, authentication, encryption, access control, terminal management, mobility management, data packet routing and forwarding, and
  • the function of the policy control, the billing, and the like may be divided into several modules according to the function and the deployment location.
  • the M-IoT Core is taken as an example;
  • the device 16 generally refers to an application server that provides services in a specific industry.
  • the relay node 12 includes a communication module 1201, a processor 1202, a non-erasable memory 1203, and an erasable memory 1204, wherein the communication module 1201 is used for the relay node to communicate with other communication devices, and the non-rewritable memory 1203 is used to store executable program code and Parameters, such as the kernel (English name: kernel), middleware (English full name: middleware), application programming interface (English full name: application programming interface, English abbreviation: API) and applications, etc., rewritable memory 1204 for storage
  • the variable or running program code, the processor 1202 is configured to control the communication module 1201 to communicate, read the program code and the curing parameter in the non-erasable memory 1203, and the read and write rewritable memory 1204 executes the program code or variables and the like.
  • the network selection device 14 includes a communication module 1401, a processor 1402, a non-rewritable memory 1403, and an erasable memory 1404, wherein the communication module The 1401 is used by the network selection device 14 to communicate with other communication devices.
  • the non-rewritable memory 1403 is configured to store executable program code and parameters and the like, such as a kernel, a middleware, an application program interface, an application, etc., and the rewritable memory 1404 is used.
  • the processor 1402 is configured to control the communication module 1401 to communicate, read the program code and the curing parameters in the non-erasable memory 1403, etc., and read and write the rewritable memory 1404 to execute program code or variables, etc., in storing the variables or running the program code.
  • the first core network device 15 includes a communication module 1501, a processor 1502, a non-rewritable memory 1503, and an erasable memory 1504.
  • the communication module 1501 is used by the first core network device 15 to communicate with other communication devices, and the non-rewritable memory 1503 is configured to store executable program code and parameters, such as a kernel, a middleware, an application program interface, and an application program.
  • the rewritable memory 1504 is used to store variables or run program code
  • the processor 1502 is used to control the communication module 1501 to communicate
  • the program code and the curing parameters in the non-erasable memory 1503 are read
  • the read and write rewritable memory 1504 executes the program. Code or variables, etc.
  • the above communication module is used to connect the host device with other terminals, servers, and networks.
  • the communication interface can be connected to the network by wired or wireless connection to other external terminals or servers.
  • the wireless communication may include at least one of the following: Bluetooth, WiFi, near field communication (English name: near field communication, English abbreviation: NFC), GPS (English full name: global positioning system, Chinese full name: global positioning system) and cellular communication ( English full name: cellular communication), such as LTE (English full name: long term evolution, Chinese full name: long-term evolution), LTE-A (English full name: long term evolution advanced, Chinese full name: long-term evolution technology upgrade), CDMA (English full name :code division multiple access, Chinese full name: code division multiple access), WCDMA (English full name: wideband CDMA, Chinese full name: wideband code division multiple access), UMTS (English full name: universal mobile telecommunication system, Chinese full name: universal mobile communication system ), WiBro (English full name: wireless broadband access service, Chinese full name: wireless broadband access), G
  • Wired communication can include at least one of the following: USB (English full name: universal serial bus, Chinese full name: universal serial bus), HDMI (English full name: high definition multimedia interface, Chinese full name:), RS-232 (English full name: recommended Standard 232, Chinese full name: Recommended standard 232), POTS (English full name: plain old telephone service, Chinese full name: analog telephone service).
  • the terminal device identity information in the embodiment of the present invention refers to information for identifying the characteristics of the terminal device, and is used for uniquely identifying the terminal device, for example, IMSI (English full name: international mobile subscriber identification number): International mobile subscriber identity ), GUTI (English full name: globally unique Temporary UE identity, Chinese full name: global only temporary UE identity), TMSI (English full name: temporary mobile subscriber identification number), terminal device ID, etc.; relay node identity information is used for identification The information of the characteristics of the node is used to uniquely identify the relay node, such as the relay node ID, etc.
  • the terminal device access identifier refers to an identifier used by the terminal device to communicate with the relay node, such as a MAC address in the WiFi protocol. Bluetooth logo in the Bluetooth protocol, etc.
  • the terminal device message in the embodiment of the present invention refers to a signaling or data message sent by the terminal device to the core network through the relay node; the relay node message refers to a message generated by the relay node encapsulating the terminal device message. Or the signaling or data message sent by the relay node itself to the core network.
  • the relay node message may include the relay node identity information.
  • the user database described in the embodiment of the present invention refers to a server that stores subscription information of a device such as a user equipment or a terminal device on a core network, such as HSS (English full name: home subscriber server, full name of Chinese: home subscriber server), HLR ( English full name: home location register, Chinese full name: home location register, etc.; subscription information refers to the service type, usage type, device type, etc. signed by the user equipment or terminal equipment.
  • HSS English full name: home subscriber server, full name of Chinese: home subscriber server
  • HLR English full name: home location register, Chinese full name: home location register, etc.
  • subscription information refers to the service type, usage type, device type, etc. signed by the user equipment or terminal equipment.
  • the access side information in the embodiment of the present invention is used to indicate the access network information of the relay node, such as TAI (English full name: tracking area identity, Chinese full name: tracking area identifier), CGI (English full name: cell global identification , Chinese full name: cell global identification code) and so on.
  • TAI English full name: tracking area identity
  • CGI Chinese full name: cell global identification
  • Chinese full name cell global identification code
  • the embodiment of the invention supports the direct communication between the relay node and the network side, and supports the terminal device to communicate with the network side indirectly through the relay node.
  • the relay device forwards the terminal device message including the terminal device identity information, and relays The manner in which the node re-configures the proxy terminal device message by encapsulating the terminal device message in the relay device message and indicating that the encapsulated content is a terminal device message, or parsing the terminal device message to obtain the content of the terminal device message according to the content of the terminal device message And then forwarding the generated message to the network side, so that the network side can obtain the terminal device identity information and identify the terminal device accordingly, and independently manage the terminal device and the relay node, for example, independent ID, subscription, and access authentication.
  • the billing device and the relay node can access different core networks, thereby solving the problem that the terminal device accesses the network by the identity of the relay node, so that the network side cannot identify the terminal device.
  • An embodiment of the present invention provides an indirect communication method. Referring to FIG. 5, the method includes:
  • the relay node receives a terminal device message from the terminal device.
  • the terminal device message includes the terminal device identity information.
  • the relay node encapsulates the terminal device message in the relay node message, and indicates, in the relay node message, that the encapsulated content is a terminal device message.
  • the purpose of indicating the encapsulated content as a terminal device message in the relay node message is to distinguish the terminal device message from the signaling or data sent by the relay node itself for performing the service.
  • the relay node when the relay node itself performs signaling or data transmission, the relay node constructs a relay node message according to the identity information of the relay node, where the relay node message indicates that the encapsulated content is signaling or data of the relay node. .
  • the relay node sends a relay node message to the network selection device.
  • the relay node can forward to the network selection device through the access network device.
  • the network selection device receives the relay node message.
  • the network selection device determines, according to the terminal device identity information in the relay node message, the core network to which the terminal device belongs.
  • the network selection device first needs to decapsulate the relay node message to obtain the terminal device message, and decapsulate the terminal device message to obtain the terminal device identity information therein.
  • the network selection device may query the user database according to the terminal device identity information in the relay node message to obtain the subscription information of the terminal device, and determine the core network to which the terminal device belongs according to the subscription information of the terminal device.
  • the network side device decapsulates the relay node message to obtain the relay node identity information.
  • the network selection device sends the terminal device message to the first core network device corresponding to the core network to which the terminal device belongs.
  • the corresponding first core network device receives the terminal device message.
  • the corresponding first core network device performs subsequent processing on the terminal device message.
  • the indirect communication method provided by the embodiment of the present invention, after receiving the terminal device message from the terminal device, the relay node encapsulates the terminal device message in the relay node message, and indicates that the encapsulated content is the terminal device in the relay node message.
  • the message is then forwarded to the network selection device, and the network selection device obtains the core network corresponding to the terminal device according to the terminal device identity information in the relay node message, and then forwards the corresponding core network device to the corresponding first core network device, and the first core network device pair
  • the terminal device message performs subsequent processing, so that the network side can identify the identity information of the terminal device and perform corresponding processing, thereby further performing differential management on the terminal device message and the signaling or data for the service transmission of the relay node itself.
  • the problem that the terminal device accesses the network as the relay node and the network side cannot recognize the terminal device is solved.
  • the embodiment of the present invention provides an indirect communication method.
  • the network selection device in the system is the second core network device, as shown in FIG. 6, the method includes steps S201-S215.
  • the terminal device constructs a terminal device message, and the data is transmitted to the relay node through the air interface.
  • the terminal device message includes terminal device identity information.
  • the terminal device message may be a signaling (English full name: signaling) or a data (English full name: data) message, where the terminal device message includes terminal device identity information, such as a terminal device ID (English full name: identification, Chinese full name: identification), etc.
  • the terminal device identity information function is to uniquely identify the terminal device.
  • the relay node After receiving the terminal device message of the terminal device, the relay node encapsulates the terminal device message in the relay node message, and indicates that the encapsulated content is a terminal device message in the relay node message, instead of the relay node itself performing the service.
  • the transmitted message is distinguished from the relay node message sent by the relay node itself for the service.
  • the relay node encapsulates the terminal device message in the relay node message by adding a header, where the relay node identity information is included.
  • the relay node message can be carried on the signaling plane bearer or the data plane, and is more suitable for the transmission of large data packets when the data plane bearer is adopted.
  • the encapsulated content may be indicated by the customized relay node signaling in the relay node message as a terminal device message, or may be newly added in the relay node message through the existing relay node signaling.
  • the cell indicates that the encapsulated content is a terminal device message.
  • the relay node message may further include access side information.
  • the relay node message may further include a terminal device access identifier.
  • This step corresponds to steps S101 and S102.
  • the relay node constructs a relay node message according to the identity information of the relay node.
  • the relay node message indicates that the encapsulated content is signaling or data of the relay node.
  • the relay node sends the relay node message to the access network device.
  • the access network device encapsulates the relay node message according to the communication protocol to generate an access network device to forward the message.
  • the communication protocol refers to, for example, a 3GPP protocol or a WiFi protocol or the like.
  • the access network device forwards the forwarding network device forwarding message to the second core network device.
  • Steps S204-S206 correspond to step S103.
  • the second core network device decapsulates the forwarding message of the access network device to obtain a relay node message, and determines, according to the encapsulated content indicated by the relay node message, if the encapsulated content of the relay node message is a terminal device message, Go to step S208, if the encapsulated content of the relay node message is the signaling or data of the relay node, proceed to step S212.
  • the second core network device decapsulates the relay node message to obtain a terminal device message, and decapsulates the terminal device message to obtain terminal device identity information.
  • the second core network device decapsulates the relay node message to obtain the relay node identity information.
  • the second core network device decapsulates the relay node message to obtain access side information.
  • the access side information is used to indicate access network information of the relay node, such as TAI, CGI, and the like.
  • the second core network device decapsulates the relay node message and obtains the terminal device access identifier.
  • the second core network device can also authenticate the relay node and the terminal device.
  • the second core network device queries the user database according to the terminal device identity information to obtain the subscription information of the terminal device, and determines the core network to which the terminal device belongs according to the subscription information of the terminal device.
  • Steps S207-S209 correspond to step S105.
  • the second core network device is a core network device corresponding to the core network to which the terminal device belongs, the second core The network device performs subsequent processing on the terminal device message. Otherwise, the second core network device sends the terminal device message to the first core network device corresponding to the core network to which the terminal device belongs.
  • the second core network device may add the secondary node identity information obtained by decapsulating the relay node message to the terminal device message and send the message to the first core network device.
  • the second core network device may add the access side information to the terminal device message and send the information to the first core network device.
  • the second core network device may add the terminal device access identifier to the terminal device message and send the message to the first core network device.
  • This step corresponds to step S106.
  • the first core network device parses the terminal device message to obtain the terminal device identity information, and the first core network device performs subsequent processing on the terminal device message.
  • the first core network device may further parse the foregoing terminal device message to obtain relay node identity information, and store the relay node identity information and the terminal device identity information in a local context for downlink addressing.
  • the terminal device is addressed or stored in the node management module for managing the relay node and its location by the node management module.
  • the first core network device may further parse the foregoing terminal device message to obtain access side information, and store the access side information in a local context for addressing the terminal device in downlink addressing, Or stored in the node management module for managing the relay node and its location by the node management module.
  • the first core network device may further parse the foregoing terminal device message to obtain the terminal device access identifier, and store the terminal device access identifier in the local context for searching for the terminal device during downlink addressing. site.
  • the first core network device may send the terminal device identity information to the corresponding server.
  • This step corresponds to step S108.
  • the second core network device decapsulates the relay node message to obtain relay node identity information.
  • the second core network device queries the user database according to the identity information of the relay node to obtain the subscription information of the relay node, and determines the core network to which the relay node belongs according to the subscription information of the relay node.
  • the second core network device is a core network device corresponding to the core network to which the relay node belongs, the second core network device performs subsequent processing according to the relay node message, otherwise, the second core network device performs the relay node message.
  • the first core network device corresponding to the core network to which the relay node belongs is sent.
  • the first core network device parses the relay node message to obtain relay node identity information, and performs subsequent processing on the relay node message.
  • the indirect communication method provided by the embodiment of the present invention, after receiving the terminal device message of the terminal device, the relay node encapsulates the terminal device message in the relay node message, and indicates the package content in the relay node message.
  • the terminal device message is forwarded by the second core network device according to the identity of the terminal device in the terminal device message.
  • the information query user database obtains the subscription information of the terminal device, and judges the core network according to the subscription information of the terminal device, and then sends the terminal device message to the corresponding first core network device, and the first core network device performs subsequent operations on the terminal device message.
  • the first core network device can identify the identity information of the terminal device and perform corresponding processing; when the relay node itself performs service sending signaling or data, the relay node constructs a relay node message according to the relay node identity information.
  • the relay node message indicates that the encapsulated content is signaling or data for the relay node itself to perform service transmission.
  • the second core network device queries the user database according to the relay node identity information in the relay node message.
  • the subscription information of the relay node is determined according to the subscription information of the relay node, and then the relay node message is sent to the corresponding first core network device, and the first core network device performs subsequent processing on the relay node message.
  • the network side can identify the identity information of the relay node, Corresponding processing.
  • the terminal device message and the signaling or data sent by the relay node itself may be differentiated and managed, and the problem that the terminal device accesses the network by the identity of the relay node and the network side cannot identify the terminal device is solved.
  • the terminal device identity information and the relay node identity information can be sent to servers corresponding to different core networks.
  • the embodiment of the present invention provides an indirect communication method.
  • the method includes steps S301-S315.
  • the steps S301-S305 are the same as the steps S201-S205 shown in FIG. 6, and are not described herein again.
  • the different parts of the steps shown in Fig. 6 will be described below.
  • the access network device forwards the forwarding network device forwarding message to the network selection network element.
  • Steps S304-S306 correspond to step S103.
  • the network selection network element decapsulates the forwarding message of the access network device to obtain a relay node message, and performs judgment according to the encapsulated content indicated by the relay node message. If the encapsulated content of the relay node message is a terminal device message, proceed Step S308, if the encapsulation content of the relay node message is signaling or data for the relay node itself to perform service transmission, step S312 is performed.
  • the network selection network element decapsulates the relay node message to obtain a terminal device message, and decapsulates the terminal device message to obtain terminal device identity information.
  • the network selection network element decapsulates the relay node message and obtains the relay node identity information.
  • the network selection network element decapsulates the relay node message to obtain the access side information.
  • the access side information is used to indicate access network information of the relay node, such as TAI, CGI, and the like.
  • the network selection network element decapsulates the relay node message and obtains the terminal device access identifier.
  • the network selection network element can also authenticate the relay node and the terminal device.
  • the network selection network element obtains the subscription information of the terminal device from the user database according to the identity information of the terminal device, and determines the core network to which the terminal device belongs according to the subscription information of the terminal device.
  • Steps S307-S309 correspond to step S105.
  • the network selection network element forwards the terminal device message to the first core network device corresponding to the core network to which the terminal device belongs.
  • the network selection network element may add the relay node identity information obtained by decapsulating the relay node message to the terminal device message and send the message to the first core network device.
  • the network selection network element may further add the access side information to the terminal device message and send the information to the first core network device.
  • the network selection network element may further add the terminal device access identifier to the terminal device message and send the message to the first core network device.
  • This step corresponds to step S106.
  • the first core network device parses the terminal device message to obtain the terminal device identity information, and the first core network device performs subsequent processing on the terminal device message.
  • the first core network device may further parse the terminal device message to obtain the relay node identity information, and store the relay node identity information and the terminal device identity information in a local context for using the terminal in downlink addressing.
  • the device is addressed or stored in the node management module for managing the relay node and its location by the node management module.
  • the first core network device may further parse the foregoing terminal device message to obtain access side information, and store the access side information in a local context for addressing the terminal device in downlink addressing, Or stored in the node management module for managing the relay node and its location by the node management module.
  • the first core network device may further parse the foregoing terminal device message to obtain the terminal device access identifier, and store the terminal device access identifier in the local context for searching for the terminal device during downlink addressing. site.
  • the first core network device may send the terminal device identity information to the corresponding server.
  • This step corresponds to step S108.
  • the network selection network element decapsulates the relay node message to obtain relay node identity information.
  • the network selection network element queries the user database according to the identity information of the relay node to obtain the subscription information of the relay node, and determines the core network to which the relay node belongs according to the subscription information of the relay node.
  • the network selection network element forwards the relay node message to the first core network device corresponding to the core network to which the relay node belongs.
  • the first core network device parses the relay node message to obtain the relay node identity information, and performs subsequent processing on the relay node message.
  • the first core network device may send the relay node identity information to the corresponding server.
  • the indirect communication method provided by the embodiment of the present invention, after receiving the terminal device message of the terminal device, the relay node encapsulates the terminal device message in the relay node message, and indicates the package content in the relay node message.
  • the terminal device message when forwarding, the network selection network element queries the user database according to the terminal device identity information in the terminal device message to obtain the subscription information of the terminal device, and determines the core network according to the subscription information of the terminal device, and then the proxy terminal device.
  • the message is sent to the corresponding first core network device, and the first core network device is configured to the proxy terminal.
  • the backup message performs subsequent processing, so that the network side can identify the identity information of the terminal device and perform corresponding processing; when the relay node itself performs signaling or data transmission, the relay node constructs a relay according to the identity information of the relay node. a node message, where the relay node message indicates that the encapsulated content is signaling or data for the relay node itself to perform service transmission, and when forwarding, the network selection network element queries the user database according to the relay node identity information in the relay node message.
  • the terminal device message and the signaling or data sent by the relay node itself may be differentially managed, and the problem that the terminal device accesses the network by the identity of the relay node and the network side cannot identify the terminal device is solved.
  • the terminal device identity information and the relay node identity information can be supported to be sent to servers corresponding to different core networks.
  • An embodiment of the present invention provides an indirect communication method. Referring to FIG. 8, the method includes:
  • the relay node receives the terminal device message from the object terminal device.
  • the terminal device message includes the terminal device identity information.
  • the relay node parses the terminal device message to obtain the content of the terminal device message, and constructs the proxy terminal device message according to the content of the terminal device message to initiate a message by using the identity of the terminal device.
  • the proxy terminal device message includes the terminal device identity information.
  • the other device obtains the identity information of the terminal device when the proxy terminal device directly parses the message, and considers that the message is from the terminal device identity information. Indicated terminal device.
  • the purpose of constructing the proxy terminal device message in the relay node message is to distinguish the terminal device message from the signaling or data sent by the relay node itself for performing the service.
  • the relay node when the relay node relay node performs signaling or data transmission, the relay node constructs a relay node message according to the relay node identity information, where the relay node message indicates that the encapsulated content is performed by the relay node itself. Signaling or data sent by the service.
  • the relay node sends the proxy terminal device message to the network selection device.
  • the relay node can forward to the network selection device through the access network device.
  • the network selection device receives the proxy terminal device message.
  • the network selection device determines, according to the terminal device identity information in the proxy terminal device message, the core network to which the terminal device belongs.
  • the network selection device first needs to decapsulate the relay node message to obtain the terminal device message, and decapsulate the terminal device message to obtain the terminal device identity information therein.
  • the network selection device may query the user database according to the terminal device identity information in the relay node message to obtain the subscription information of the terminal device, and determine the core network to which the terminal device belongs according to the subscription information of the terminal device.
  • the network side device decapsulates the relay node message to obtain relay node identity information.
  • the network selection device sends the proxy terminal device message to the first core network device corresponding to the core network to which the terminal device belongs.
  • the corresponding first core network device receives the proxy terminal device message.
  • the indirect communication method provided by the embodiment of the present invention constructs a proxy terminal device message by using a relay node to simulate a terminal device message, where the proxy terminal device message includes the terminal device identity information, and then forwards the message to the network selection device, and the network selection device according to the network selection device
  • the terminal device identity information in the relay node message is obtained by the core network corresponding to the terminal device, and then forwarded to the corresponding first core network device, and the first core network device performs subsequent processing on the terminal device message, so that the network side can identify the terminal.
  • the identity information of the device is processed accordingly, so that the terminal device message and the signaling or data sent by the relay node itself can be differentiated and managed, and the terminal device accesses the network as the identity of the relay node.
  • the problem that the network side cannot recognize the terminal device.
  • An embodiment of the present invention provides an indirect communication method, where the network selection network element is absent in the system, as shown in FIG. 9, the method includes:
  • the terminal device constructs a terminal device message, and transmits the data as a data to the relay node through the air interface.
  • the terminal device message includes terminal device identity information.
  • This step is the same as that of S201, and details are not described herein again.
  • the relay node parses the terminal device message to obtain the content of the terminal device message, and constructs the proxy terminal device message according to the content of the terminal device message to initiate a message by using the identity of the terminal device.
  • the proxy terminal device message can directly reflect the message type, for example, it can be attached, subscribed, access authenticated, billed, and the like.
  • the relay node constructs the proxy terminal device message according to the terminal device identity information and the content of the terminal device message to initiate a message as the identity of the terminal device.
  • the proxy terminal device message may further include access side information.
  • the proxy terminal device message may further include a terminal device access identifier.
  • This step corresponds to steps S401 and S402.
  • the relay node message indicates that the encapsulated content is signaling or data for the relay node itself to perform service transmission.
  • the relay node sends the proxy terminal device message or the relay node message to the access network device.
  • the access network device encapsulates the proxy terminal device message or the relay node message according to the communication protocol to generate an access network device forward message.
  • the communication protocol refers to, for example, a 3GPP protocol or a WiFi protocol or the like.
  • the access network device forwards the forwarding network device forwarding message to the second core network device.
  • Steps S504-S506 correspond to step S403.
  • the second core network device decapsulates the forwarding message of the access network device to obtain a relay node message or a proxy terminal device message, and then decapsulates the decapsulated relay node message or the proxy terminal device message.
  • step S508 If the proxy terminal device message is decapsulated, the second core network device obtains the terminal device identity information, and proceeds to step S509. If the relay node message is decapsulated, the second core network device obtains the relay node. For identity information, go to step S512.
  • the second core network device queries the user database according to the identity information of the terminal device to obtain the subscription information of the terminal device, and determines the core network to which the terminal device belongs according to the subscription information of the terminal device.
  • Steps S507-S509 correspond to step S405.
  • the second core network device If the second core network device is a core network device corresponding to the core network to which the terminal device belongs, the second core network device performs subsequent processing according to the proxy terminal device message. Otherwise, the second core network device sends the proxy terminal device message. The first core network device corresponding to the core network to which the terminal device belongs.
  • This step corresponds to step S406.
  • the first core network device parses the proxy terminal device message to obtain the terminal device identity information, and the first core network device performs subsequent processing on the proxy terminal device message.
  • the first core network device may further parse the proxy terminal device message to obtain access side information, and store the access side information in a local context for addressing the terminal device in downlink addressing. Or stored in the node management module for managing the relay node and its location by the node management module.
  • the first core network device may further parse the proxy terminal device message to obtain the terminal device access identifier, and store the terminal device access identifier in the local context for performing the downlink device on the downlink device. Addressing.
  • the first core network device may send the terminal device identity information to the corresponding server.
  • This step corresponds to step S408.
  • the second core network device queries the user database according to the identity information of the relay node to obtain the subscription information of the relay node, and determines the core network to which the relay node belongs according to the subscription information of the relay node.
  • the second core network device is a core network device corresponding to the core network to which the relay node belongs, the second core network device performs subsequent processing on the relay node message. Otherwise, the second core network device sends the relay node message.
  • the first core network device parses the relay node message to obtain relay node identity information, and sends a relay node message.
  • the relay node after receiving the terminal device message of the terminal device, the relay node simulates the terminal device message by using the relay node to construct a proxy terminal device message, where the proxy terminal device message includes the terminal device identity information.
  • the second core network device queries the user database according to the terminal device identity information in the proxy terminal device message to obtain the subscription information of the terminal device, and determines the core network according to the subscription information of the terminal device, and then sends the terminal device message.
  • the corresponding first core network device performs subsequent processing on the terminal device message by the first core network device, so that the network side can identify the identity information of the terminal device and perform corresponding processing; when the relay node itself performs service sending signaling or In the case of data, the relay node constructs a relay node message according to the relay node identity information, where the relay node message indicates that the encapsulated content is signaling or data for the relay node itself to perform service transmission, and when forwarding, by the second core Network device based on relay node message
  • the relay node identity information query user database obtains the subscription information of the relay node, and judges the core network according to the subscription information of the relay node, and then sends the relay node message to the corresponding first core network device, by the first core
  • the network device performs subsequent processing on the relay node message, so that the network side can identify the identity information of the relay node and perform corresponding processing.
  • the terminal device message and the signaling or data sent by the relay node itself may be differentially managed, and the problem that the terminal device accesses the network by the identity of the relay node and the network side cannot identify the terminal device is solved.
  • the terminal device identity information and the relay node identity information can be supported to be sent to servers corresponding to different core networks.
  • the embodiment of the present invention provides an indirect communication method.
  • the method includes steps S601-S614.
  • the steps S601-S605 are the same as the steps S501-S505 shown in FIG. 9, and are not described herein again.
  • the different parts of the steps shown in Fig. 9 will be described below.
  • the access network device forwards the forwarding network device forwarding message to the network selection network element.
  • Steps S604-S606 correspond to step S403.
  • the network selection network element decapsulates the forwarding message of the access network device to obtain a relay node message or a proxy terminal device message, and then decapsulates the decapsulated relay node message or the proxy terminal device message.
  • step S608 If the terminal device identity information is obtained by decapsulating the proxy terminal device message, proceed to step S609. If the relay node message is decapsulated to obtain the relay node identity information, proceed to step S612.
  • the network selection network element obtains the subscription information of the terminal device from the user database according to the terminal device identity information, and determines the core network to which the terminal device belongs according to the subscription information of the terminal device.
  • Steps S607-S609 correspond to step S405.
  • the network selection network element forwards the proxy terminal device message to the first core network device corresponding to the core network to which the terminal device belongs.
  • This step corresponds to step S406.
  • the first core network device parses the proxy terminal device message to obtain the terminal device identity information, and the first core network device performs subsequent processing on the proxy terminal device message.
  • the first core network device may further parse the proxy terminal device message to obtain access side information, and store the medium access side information in a local context for searching for the terminal device during downlink addressing.
  • the address, or stored in the node management module, is used by the node management module to manage the relay node and its location.
  • the first core network device may further parse the proxy terminal device message to obtain the terminal device access identifier, and store the terminal device access identifier in the local context for performing the downlink device on the downlink device. Addressing.
  • the first core network device may send the end device identity information to the corresponding server.
  • This step corresponds to step S408.
  • the network selection network element queries the user database according to the identity information of the relay node to obtain the subscription information of the relay node, and the network selection network element determines, according to the subscription information of the relay node, the core network to which the relay node belongs.
  • the network selection network element forwards the relay node message to the first core network device corresponding to the core network to which the relay node belongs.
  • the first core network device parses the relay node message to obtain the relay node identity information, and performs subsequent processing on the relay node message.
  • the first core network device may send the relay node identity information to the corresponding server.
  • the relay node after receiving the terminal device message of the terminal device, the relay node simulates the terminal device message by using the relay node to construct a proxy terminal device message, where the proxy terminal device message includes the terminal device identity information.
  • the network selection network element queries the user database according to the terminal device identity information in the proxy terminal device message to obtain the subscription information of the terminal device, and judges the core network according to the subscription information of the terminal device, and then sends the proxy terminal device message.
  • the first core network device performs subsequent processing on the proxy terminal device message, so that the network side can identify the identity information of the terminal device and perform corresponding processing; when the relay node itself performs service sending signaling Or data, the relay node constructs a relay node message according to the relay node identity information, where the relay node message indicates that the encapsulated content is signaling or data for the relay node itself to perform service transmission, and when forwarding, the network selects Network element based on relay node
  • the relay node identity information query user database obtains the subscription information of the relay node, and judges the core network according to the subscription information of the relay node, and then sends the relay node message to the corresponding first core network device, A core network device performs subsequent processing on the relay node message, so that the network side can identify the identity information of the relay node and perform corresponding processing.
  • the terminal device message and the signaling or data sent by the relay node itself may be differentially managed, and the problem that the terminal device accesses the network by the identity of the relay node and the network side cannot identify the terminal device is solved.
  • the terminal device identity information and the relay node identity information can be supported to be sent to servers corresponding to different core networks.
  • the present invention provides an indirect communication method for use in the downlink addressing process shown in Figures 6, 7 as shown in Figure 11, the method comprising:
  • the first core network device receives downlink data.
  • Downstream data can come from the server.
  • the first core network device generates a downlink terminal device message according to the downlink data and the local context.
  • the local context includes the relay node identity information, the terminal device identity information, the access side information, and the terminal device access identifier
  • the downlink terminal device message includes the downlink data, the relay node identity information, and the terminal device access identifier.
  • the local context is the first core network device according to the terminal device message or the relay node identity information in the proxy terminal device message, the terminal device identity information, the access side information, and the terminal device access when the data is uplinked in steps S211 and S311. Obtained by the logo.
  • the first core network device sends a downlink terminal device message to the network selection device.
  • the network selection device receives the downlink terminal device message.
  • the network selection device encapsulates the downlink terminal device message in the downlink relay node message according to the relay node identity information in the downlink terminal device message.
  • the network selection device sends a downlink relay node message to the relay node.
  • the network selection device sends the relay node message to the relay node by using the access network device.
  • the relay node receives a downlink relay node message.
  • the relay node parses the downlink relay node message to obtain a downlink terminal device message and a terminal device access identifier, and finds the corresponding terminal device according to the terminal device access identifier in the downlink terminal device message.
  • the relay node sends a downlink terminal device message to the corresponding terminal device.
  • the indirect communication method provided by the embodiment of the present invention, after the downlink data reaches the first core network device, the first core network device generates a downlink terminal device message according to the downlink data and the local context saved in the uplink data transmission process, and the network selects The network element encapsulates the downlink terminal device message in the relay node message according to the relay node identity information in the downlink terminal device message, and forwards the message to the relay node through the access network device, and the relay node parses the downlink relay node message.
  • the corresponding terminal device is found according to the terminal device access identifier, and finally the downlink terminal device message is sent to the corresponding terminal device, so that the local context established by the uplink direction is used to provide assistance for the relay node and the terminal device to address the downlink data. Thereby, downlink indirect communication is realized.
  • the present invention provides an indirect communication method for the downlink addressing process shown in Figures 9 and 10, as shown in Figure 12, the method comprising:
  • the first core network device receives downlink data.
  • Downstream data can come from the server.
  • the first core network device generates a downlink terminal device message according to the downlink data and the local context.
  • the local context includes the terminal device identity information and the terminal device access identifier
  • the downlink terminal device message includes downlink data, terminal device identity information, and terminal device access identifier.
  • the local context may also include access side information of the relay node.
  • the downlink terminal device message may further include access side information of the relay node.
  • the local context is obtained by the first core network device according to the terminal device identity information, the terminal device identity information, the access side information, and the terminal device access identifier in the terminal device message or the proxy terminal device message when the data is uplinked in steps S511 and S611.
  • the first core network device sends a downlink terminal device message to the network selection device.
  • the network selection device receives the downlink terminal device message.
  • the network selection device performs downlink addressing according to the terminal device identity information in the downlink terminal device message to find a corresponding relay node.
  • the network selection device performs downlink addressing according to the access side information of the relay node in the downlink terminal device message to find a corresponding relay node.
  • the network selection device sends a downlink terminal device message to the corresponding relay node.
  • the network selection device sends the terminal device message to the corresponding relay node by using the access network device.
  • the corresponding relay node receives the downlink terminal device message.
  • the corresponding relay node parses the downlink terminal device message, and finds the corresponding terminal device according to the terminal device access identifier in the downlink terminal device message.
  • the corresponding relay node may further search the context of the relay node according to the terminal device identity information in the downlink terminal device message to find a corresponding terminal device access identifier, and find a corresponding according to the terminal device access identifier. Terminal equipment.
  • the relay node sends a downlink terminal device message to the corresponding terminal device.
  • the indirect communication method provided by the embodiment of the present invention, after the downlink data reaches the first core network device, the first core network device generates a downlink terminal device message according to the downlink data and the local context saved in the uplink data transmission process, and the network selects The device performs downlink addressing according to the terminal device identity information in the downlink terminal device message to find a corresponding relay node, and the relay node parses the downlink terminal device message, and finds the corresponding terminal device according to the terminal device access identifier, and finally The downlink terminal device message is sent to the corresponding terminal device, and the local context established by the uplink direction is used to provide assistance for addressing the relay node and the terminal device by using the downlink data, thereby implementing downlink indirect communication.
  • the indirect communication method shown in FIG. 7 is described below with a specific signaling procedure of the terminal device attachment process. Referring to FIG. 13, the method includes:
  • the relay node first accesses the network, and broadcasts the PLMN of the relay node on the downward air interface side (English name: public land mobile network, Chinese full name: public land mobile network) and Cell id (Chinese full name: cell identifier) ).
  • the relay node broadcasts the relay node ID, such as the Bluetooth identifier in the Bluetooth protocol, the SSID in the WiFi protocol (English full name: service set identifier, Chinese full name: service set identifier), and the like.
  • the relay node ID such as the Bluetooth identifier in the Bluetooth protocol, the SSID in the WiFi protocol (English full name: service set identifier, Chinese full name: service set identifier), and the like.
  • the terminal device selects a terminal-side air interface of the relay node to initiate air interface access according to a certain network selection policy (such as power saving).
  • the terminal device For an air interface other than the 3GPP protocol, such as an air interface in the Bluetooth protocol or the WiFi protocol, the terminal device performs a mutual authentication process and key negotiation with the relay node.
  • the terminal device constructs the terminal device NAS (English full name: non-access-stratum, Chinese full name: non-access layer) message, as data is passed to the indirect (English full name: indirect) air interface (for example, Bluetooth/WiFi/3GPP) Following the node.
  • NAS English full name: non-access-stratum, Chinese full name: non-access layer
  • indirect English full name: indirect
  • the terminal device NAS message may include, for example, an attach request (English full name: attach request) message, and the delivered terminal device NAS message includes terminal device identity information, such as a terminal device ID.
  • attach request English full name: attach request
  • terminal device identity information such as a terminal device ID
  • the relay node encapsulates the terminal device NAS message in the relay node NAS message, and delivers the eNodeB air interface to the eNodeB in the cellular network, and instructs the relay node NAS message to encapsulate the content as the terminal device NAS in the relay node NAS message. Message.
  • the indication may be indicated by a customized relay node signaling message, for example, by using a relay node NAS message, or by indicating a newly added cell in the existing relay node NAS message, indicating that the encapsulated content may include the terminal device. NAS message and terminal device ID.
  • the purpose of indicating the relay node NAS message encapsulation content as the terminal device NAS message in the relay node NAS message is to distinguish it from the relay node NAS message transmitted by the relay node itself.
  • This step corresponds to steps S302 and S304.
  • the access network device eNodeB encapsulates the relay node NAS message in an S1AP message (English full name: S1 application protocol, Chinese full name: S1 application protocol), and sends the message as an access network device to the network selection device.
  • S1AP Simple full name: S1 application protocol, Chinese full name: S1 application protocol
  • This step corresponds to steps S305 and S306.
  • the relay node constructs a relay node NAS message according to the identity information of the relay node and sends the message to the access network device eNodeB.
  • the relay node NAS message indicates that the encapsulated content is signaling or data for the relay node itself to perform service transmission.
  • the access network device eNodeB forwards the relay node NAS message to the network selection network element.
  • the network selection device decapsulates the S1AP to obtain a relay node NAS message, and determines, according to the encapsulated content indicated by the decapsulated relay node NAS message, if the decapsulated relay node NAS message indicates the encapsulated content terminal. If the device NAS message is sent to step S909, if the decapsulated relay node NAS message is a relay node NAS message that the relay node itself performs service transmission, step S911 is performed:
  • This step corresponds to step S307.
  • the network selection device parses the relay node NAS message to obtain the terminal device NAS message, and then parses the terminal device NAS message to obtain the terminal.
  • Device identity information (such as terminal device ID), corresponding to the terminal device identity information M-IoT Core.
  • the network selection device searches for the locally configured policy for the core network M-IoT Core selection according to the device access (English name: device access) ID in the relay node NAS message.
  • the network selection device according to the terminal device identity information ID (for example, IMSI/GUTI/TMSI, etc.) in the terminal device NAS message encapsulated in the relay node NAS message, from the user database HSS (English full name: home subscriber server, Chinese full name: The subscription information of the terminal device is acquired in the home subscriber network server (only part of the subscription information related to the M-IoT Core is obtained), thereby selecting the core network M-IoT Core.
  • the terminal device identity information ID for example, IMSI/GUTI/TMSI, etc.
  • the network selection device obtains RAN side information from the S1-AP and the UE NAS (such as TAI (English full name: Tracking area identity), CGI (English full name: cell global identification, Chinese full name: cell global)
  • TAI English full name: Tracking area identity
  • CGI English full name: cell global identification
  • the identification code the relay node ID (which can be authenticated first), the terminal device ID, etc., are added to the terminal device NAS message header, and the terminal device NAS message is forwarded to the M-IoT Core for processing.
  • Step S909 corresponds to steps S308 and S309.
  • the network selection device adds the relay node identity information and the terminal device identity information to the terminal device NAS message, and sends the message to the corresponding first core network device M-IoT Core.
  • This step corresponds to step S310.
  • the first core network device M-IoT Core After receiving the terminal device NAS message, the first core network device M-IoT Core completes the corresponding authentication/authorization/security process and completes the attach process.
  • the obtained relay node identity information, TAI, CGI, and terminal device identity information are stored locally.
  • terminal device ID such as Bluetooth identity
  • MAC MAC (English full name: media access control Chinese name: media access control), etc.
  • This step corresponds to step S311.
  • the network selection device selects the first core network device for message distribution.
  • This step corresponds to steps S312-S315, and details are not described herein again.
  • the indirect communication method provided by the embodiment of the present invention encapsulates the terminal device NAS message in the relay node NAS message by the relay node, and indicates that the relay node NAS message encapsulated content is the terminal device NAS message in the relay node NAS message.
  • the network selection device determines, by the network selection device, the encapsulated content indicated by the decapsulated relay node NAS message, and if the decapsulated relay node NAS message indicates the encapsulated content terminal device NAS message, parsing the relay node NAS message Obtaining the terminal device NAS message, and then parsing the terminal device NAS message to obtain the terminal device identity information, and acquiring the subscription information of the terminal device from the user database HSS according to the terminal device identity information, thereby selecting the first core network device M-IoT Core, and send the terminal device NAS message to the corresponding first core network device
  • the M-IoT Core enables the first core network device to obtain the terminal device identity information through the terminal device NAS message, and solves the problem that the terminal device accesses the network by the identity of the relay node, so that the network side cannot identify the terminal device.
  • the method includes:
  • the terminal device encapsulates the MO service data in a terminal device NAS message (data service request), and transmits the data as a data to the relay node through the indirect air interface.
  • the relay node encapsulates the terminal device NAS message in the relay node NAS message to the eNodeB and the network selection device for processing, and sends the network device to the corresponding first core network device M-IoT Core.
  • the processing flow in the step S1002 is similar to the processing flow in the steps S904-S910 in the process of attaching the terminal device, and details are not described herein again.
  • the first core network device M-IoT Core parses the service data encapsulated in the NAS message of the terminal device, and performs a certain protocol encapsulation and sends the data to the application server.
  • the indirect communication method provided by the embodiment of the present invention encapsulates the terminal device NAS message in the relay node NAS message to the eNodeB and the network selection device for processing, and the network selection device sends the corresponding M-IoT to the corresponding M-IoT.
  • the Core, the M-IoT Core parses the service data encapsulated in the NAS message of the terminal device, so that the first core network device can process the data in the NAS message of the uplink terminal device.
  • the following line (English full name: mobile terminated, Chinese full name: mobile station is called) business process describes the process of addressing the terminal device in the downlink direction described in the steps in FIG. 6, 7, 9, 10 and 11.
  • the method includes:
  • the application server initiates MO service data (carrying an external device ID) and transmits the data to the first core network device M-IoT Core.
  • the M-IoT Core After the protocol decapsulation processing is performed by the S1102, the M-IoT Core obtains the relay node identity information (relay node ID) according to the local context, and queries the access side information TAI where the relay node is located according to the local context or from the user database HSS. /CGI (solves relay node movement problems).
  • the MT service data is encapsulated in the downlink terminal device NAS message and sent to the network selection device.
  • the downlink terminal device NAS message carries a cell such as a relay node ID, a TAI/CGI, and a terminal device ID.
  • This step corresponds to steps S702 and S703.
  • the network selection device encapsulates the terminal device NAS in the relay node NAS message or the S1AP according to the relay node identity information (relay node ID), the TAI/CGI, and the like, and transmits the terminal device NAS to the access network device eNodeB.
  • relay node ID relay node ID
  • TAI/CGI TAI/CGI
  • the network selection device If the relay node is in an idle state (determined according to the S1 interface state), the network selection device first initiates a paging message, and after the relay node responds, the relay node NAS message or S1AP including the MT data is delivered.
  • S1104 The NodeB, as the access network device, delivers the relay node NAS message to the relay node.
  • Steps S1103 and S1104 correspond to steps S705 and S706.
  • the relay node associates the terminal device identity information (for example, the terminal device ID) in the terminal device NAS message parsed in the relay node NAS message with the locally reserved terminal device identity information, and then parses the terminal device NAS. The message is transmitted to the corresponding terminal device.
  • the terminal device identity information for example, the terminal device ID
  • the eNodeB initiates a paging or re-pairing connection. After the terminal device is connected to the relay node, the relay node sends the terminal that includes the MT data. Device NAS message.
  • This step corresponds to steps S708 and S709.
  • the application server initiates the MO service data, and delivers the data to the first core network device M-IoT Core.
  • the relay node is obtained according to the local context. Identity information (relay node ID), according to the local context, or query the TAI/CGI information of the relay node from the user database HSS (to solve the relay node mobility problem).
  • the MT service data is encapsulated in the downlink terminal device NAS message and sent to the network selection device, and the network selection device encapsulates the terminal device NAS in the relay node NAS message according to the relay node identity information and transmits the message to the relay network device eNodeB.
  • the relay node finds the corresponding terminal device in the terminal device identity information in the terminal device NAS message parsed in the relay node NAS message, and then transmits the parsed terminal device NAS message to the corresponding terminal device, thereby realizing When transmitting data in the downstream direction, the terminal device is addressed by the context.
  • the indirect communication method shown in FIG. 10 is described below with a specific signaling procedure of the terminal device attachment process.
  • the method includes S1201-S1211, wherein steps S1201-S1203 are respectively shown in FIG. Steps S901-S903 are the same and will not be described again here.
  • the different parts of the steps shown in Fig. 13 will be described below.
  • the relay node After receiving the terminal device NAS message, the relay node parses the terminal device NAS message to obtain the content of the terminal device NAS message (attach request), and constructs the proxy terminal device NAS message according to the content (attachment request) of the terminal device NAS message.
  • the message is initiated as the identity of the terminal device, and is transmitted to the access network device eNodeB in the cellular network through the network selection device eNodeB air interface.
  • This step corresponds to steps S602 and S604.
  • the relay node When the relay node itself performs signaling or data transmission, the relay node constructs a relay node NAS message according to the identity information of the relay node and sends the message to the access network device eNodeB.
  • the relay node NAS message indicates that the encapsulated content is signaling or data for the relay node itself to perform service transmission.
  • step S905 This step is the same as step S905, and this step corresponds to step S603.
  • the access network device eNodeB encapsulates the relay node NAS message in an S1AP message (English full name: S1 application protocol, Chinese full name: S1 application protocol), and sends the access network device forwarding message to the network selection device.
  • S1AP Simple full name: S1 application protocol, Chinese full name: S1 application protocol
  • step S906 This step is the same as step S906, and this step corresponds to steps S605 and S606.
  • step S1207 The network selection device decapsulates the S1AP. If the obtained proxy relay node NAS message is decapsulated, step S1208 is performed. If the obtained relay node NAS message is decapsulated, step S1210 is performed.
  • step S907 This step is the same as step S907, and this step corresponds to step S607.
  • the network selection device parses the proxy relay node NAS message, obtains terminal device identity information (for example, terminal device ID), and selects the corresponding M-IoT according to the terminal device identity information.
  • terminal device identity information for example, terminal device ID
  • the network selection device searches for a locally configured policy for M-IoT Core selection according to the device access (English name: device access) ID in the proxy relay node NAS message.
  • the network selection device is configured according to the terminal device ID encapsulated in the NAS message of the proxy relay node (for example, IMSI (English full name: international mobile subscriber identification number)/GUTI (English full name: globally unique temporary UE identity) , Chinese full name: the world's only temporary UE logo) / TMSI (English full name: temporary mobile subscriber identification number Chinese full name: temporary mobile subscriber identity), etc., from the user database HSS (English full name: home subscriber server, Chinese full name: attribution signing The user server) obtains the subscription information of the terminal device (only the part of the subscription information related to the M-IoT Core is obtained), thereby selecting the M-IoT Core.
  • IMSI International full name: international mobile subscriber identification number
  • GUI American full name: globally unique temporary UE identity
  • TMSI Chinese full name: temporary mobile subscriber identification number
  • HSS Chinese full name: home subscriber server, Chinese full name: attribution signing
  • the user server obtains the subscription information of the terminal device (only the part
  • the network selection device obtains RAN side information from the S1-AP and the UE NAS (such as TAI (English full name: Tracking area identity), CGI (English full name: cell global identification, Chinese full name: cell global)
  • TAI English full name: Tracking area identity
  • CGI English full name: cell global identification
  • the identification code the relay node id (which can be authenticated first), the terminal device ID, etc., are added to the proxy relay node NAS message header, and the proxy relay node NAS message is forwarded to the M-IoT Core for processing. .
  • Step S1208 corresponds to steps S608 and S609.
  • the network selection device sends the proxy terminal device NAS message to the corresponding M-IoT Core.
  • This step corresponds to steps S610-S611.
  • the S1210 and the M-IoT Core After receiving and parsing the NAS message of the proxy terminal device, the S1210 and the M-IoT Core complete the corresponding authentication/authorization/security process and complete the attach process.
  • the obtained relay node identity information, TAI, CGI, and terminal device identity information are stored locally.
  • terminal device ID such as Bluetooth identity
  • MAC MAC (English full name: media access control Chinese name: media access control), etc.
  • This step corresponds to step S612.
  • This step corresponds to steps S613-S616, and details are not described herein again.
  • the relay node parses the terminal device NAS message to obtain the content of the terminal device NAS message, and constructs the proxy terminal device NAS according to the content of the terminal device NAS message.
  • the message initiates a message by simulating the identity of the terminal device, and the network selection device parses the proxy relay node NAS message to obtain the terminal device identity information, and obtains the subscription information of the terminal device from the user database HSS according to the terminal device identity information and selects the terminal device according to the terminal device identity information.
  • the M-IoT Core parses the proxy terminal device NAS message to obtain the terminal device identity information, so that the first core network device M-IoT Core can obtain the terminal device identity information through the terminal device NAS message, and the terminal device is solved. Accessing the network as the identity of the relay node makes the network side unable to identify the terminal device.
  • the method includes:
  • the terminal device encapsulates the MO service data in a terminal device NAS message (data service request), and transmits the data as a data to the relay node through the indirect air interface.
  • the relay node After receiving the terminal device NAS message, the relay node parses the terminal device NAS message to obtain the content of the terminal device NAS message (MO service data), and constructs the proxy terminal device according to the content (MO service data) of the terminal device NAS message.
  • the NAS message initiates the message as the identity of the terminal device, and then passes it to the eNodeB and the network selection device for processing, and the network selection device sends the message to the corresponding M-IoT Core.
  • step S1302 is the same as the step of attaching the terminal device described above.
  • the processing in the S1204-S1210 is similar.
  • the difference is that the content of the NAS message of the terminal device is the MO service data, and details are not described herein.
  • the S1303 and the M-IoT Core parse the service data encapsulated in the NAS message of the proxy terminal device, and perform a certain protocol encapsulation and then send it to the application server.
  • the terminal device encapsulates the MO service data in the terminal device NAS message, and after receiving the terminal device NAS message, the relay node parses the terminal device NAS message to obtain the content of the terminal device NAS message.
  • MO service data and according to the content of the terminal device NAS message (MO service data), construct a proxy terminal device NAS message to initiate a message as the identity of the terminal device, and then transmit it to the eNodeB and the network selection device for processing, and the network selection device sends the message.
  • the corresponding M-IoT Core is configured to enable the M-IoT Core to parse the service data encapsulated in the NAS message of the proxy terminal device, so that the first core network device can process the data in the NAS message of the uplink terminal device.
  • each network element such as a relay node and a network selection device, etc.
  • each network element includes hardware structures and/or software modules corresponding to each function.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • the embodiment of the present invention may divide the function module into the relay node, the network selection device, and the like according to the foregoing method example.
  • each function module may be divided according to each function, or two or more functions may be integrated into one process.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 18 is a schematic diagram showing a possible structure of a relay node involved in the foregoing embodiment.
  • the relay node 12 includes: a packaging unit 1211, a communication unit 1212, and a communication unit 1212. Analysis unit 1213.
  • the encapsulation unit 1211 is configured to support the relay node 12 to perform the process S102 in FIG. 5, the processes S202 and S203 in FIG. 6, the processes S302 and S303 in FIG. 7, the process S402 in FIG. 8, the process S502 in FIG. 9, and S503, processes S602 and S603 in FIG. 10, process S904 in FIG. 13, and process S1002 in FIG. 14;
  • the communication unit 1212 is configured to support the relay node 12 to perform the processes S101 and S103 in FIG.
  • parsing unit 1213 is configured to support relay node 12 to execute FIG. Process S708, process S808 in FIG. 12, process S1105 in FIG. 15, process S1204 in FIG. 16, and process S1302 in FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • FIG. 19 shows a possible structural diagram of the relay node involved in the above embodiment.
  • the relay node 12 includes a processing module 1222 and a communication module 1223.
  • the processing module 1222 is configured to control and manage the action of the relay node.
  • the processing module 1222 is configured to support the relay node 12 to perform the process S102 in FIG. 5, the processes S202 and S203 in FIG. 6, and the process S302 in FIG. And S303, the process S402 in FIG. 8, the processes S502 and S503 in FIG. 9, the processes S602 and S603 in FIG. 10, the process S904 in FIG. 13, the process S1002 in FIG. 14, the process S708 in FIG.
  • Communication module 1223 is used to support communication between relay node 12 and other network entities, such as with the functional modules or network entities illustrated in Figures 1, 3, and 4.
  • the relay node 12 may further include a storage module 1221 for storing program codes and data of the relay node.
  • the processing module 1222 may be a processor or a controller, for example, may be a central processing unit (English name: central processing unit, English abbreviation: CPU), a general-purpose processor, a digital signal processor (English full name: Digital Signal Processor, English) Abbreviation: DSP), ASIC (application-specific integrated circuit, English abbreviation: ASIC), field programmable gate array (English full name: field programmable gate array, English abbreviation: FPGA) or other programmable logic devices, Transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module 1223 may be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 1221 may be a memory.
  • the processing module 1222 is a processor
  • the communication module 1223 is a transceiver
  • the storage module 1221 is a memory
  • the present The relay node involved in the embodiment of the invention may be the relay node shown in FIG.
  • the relay node 12 includes a processor 1232, a transceiver 1233, a memory 1231, and a bus 1234.
  • the transceiver 1233, the processor 1232, and the memory 1231 are connected to each other through a bus 1234;
  • the bus 1234 may be a peripheral component interconnect standard (English full name: peripheral component interconnect, English abbreviation: PCI) bus or an extended industry standard structure (English full name) :extended industry standard architecture, English abbreviation: EISA) bus.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 20, but it does not mean that there is only one bus or one type of bus.
  • FIG. 21 is a schematic diagram showing a possible structure of the network selection device involved in the foregoing embodiment.
  • the network selection device 14 includes: an obtaining unit 1411, and a communication unit 1412.
  • the obtaining unit 1411 is configured to support the network selecting device 14 to perform the process S105 in FIG. 5, the process S405 in FIG. 8, the process S805 in FIG. 12, the process S909 in FIG. 13, the process S1209 in FIG. 16, and the communication unit 1412.
  • the support network selecting device 14 performs the processes S104 and S106 in FIG. 5, the processes S210 and S214 in FIG. 6, the processes S310 and S314 in FIG. 7, the processes S304 and S306 in FIG.
  • the judging unit 1413 is for supporting the network selecting device 14 to perform the processes S207, S209, and S213 in FIG. 6, the processes S307, S309, and S313 in FIG. 7, the processes S507, S509, and S513 in FIG. 9, and the process S607 in FIG. S609 and S613, process S908 in FIG. 13, process S1208 in FIG.
  • decapsulation unit 1414 is used to support network selection device 14 to perform processes S208 and S212 in FIG. 6, processes S308 and S312 in FIG. 7, and Processes S508 and S512 in 9, processes S608 and S612 in FIG. 10, process S908 in FIG. 13, 16 in the process S1208; for encapsulating unit 1415 in FIG. 14 performs network selection support apparatus 11 processes S705, the process in FIG. 13 S910, the process in FIG. 15 S1103, the process in FIG. 16 S1210. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • FIG. 22 shows a possible structural diagram of the network selection device involved in the above embodiment.
  • the network selection device 14 includes a processing module 1422 and a communication module 1423.
  • the processing module 1422 is configured to perform control management on the action of the network selection device.
  • the processing module 1422 is configured to support the network selection device to perform the process S105 in FIG. 5, the process S405 in FIG. 8, the process S805 in FIG. 12, and FIG. Process S909 in process, process S1209 in FIG. 16, processes S207, S209 and S213 in FIG. 6, processes S307, S309 and S313 in FIG. 7, processes S507, S509 and S513 in FIG. 9, processes in FIG.
  • Communication module 1423 is used to support communication between the network selection device and other network entities, such as communication with the functional modules or network entities illustrated in FIG. 1, FIG. 2, or FIG.
  • the network selection device may further include a storage module 1421 for storing program codes and data of the network selection device.
  • the processing module 1422 may be a processor or a controller, for example, may be a central processing unit, a general purpose processor, Digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module 1423 may be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 1421 may be a memory.
  • the network selection device may be the network selection device shown in FIG.
  • the network selection device 14 includes a processor 1432, a communication interface 1433, a memory 1431, and a bus 1434.
  • the communication interface 1433, the processor 1432, and the memory 1431 are connected to each other through a bus 1434.
  • the bus 1434 may be a peripheral component interconnection standard bus or an extended industry standard structure bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 23, but it does not mean that there is only one bus or one type of bus.
  • FIG. 24 is a schematic diagram showing a possible structure of the first core network device involved in the foregoing embodiment, where the first core network device 15 includes: a communication unit 1511.
  • Processing unit 1512. The communication unit 1511 is configured to support the first core network device 15 to perform the process S107 in FIG. 5, the processes S701 and S703 in FIG. 11, the processes S801 and S803 in FIG. 12, the process S911 in FIG. 13, and the process in FIG. S1003, the process S1102 in FIG. 15, the process S1303 in FIG. 17; the processing unit 1512 is configured to support the first core network device 15 to perform the process S108 in FIG. 5, the processes S211 and S215 in FIG. 6, and the process in FIG. S311 and S315, process S408 in Fig.
  • FIG. 25 shows a possible structural diagram of the first core network device involved in the above embodiment.
  • the first core network device 15 includes a processing module 1522 and a communication module 1523.
  • the processing module 1522 is configured to perform control management on the actions of the first core network device.
  • the processing module 1522 is configured to support the first core network device to perform the process S108 in FIG. 5, the processes S211 and S215 in FIG. 6, and in FIG. Processes S311 and S315, process S408 in FIG. 8, processes S511 and S514 in FIG. 9, processes S611 and S614 in FIG. 10, process S702 in FIG. 11, process S802 in FIG. 12, and processes in FIG. S911, process S1003 in FIG.
  • the communication module 1523 is configured to support communication between the first core network device and other network entities, such as communication with the functional modules or network entities illustrated in FIG. 1, FIG. 2, or FIG.
  • the first core network device may further include a storage module 1521 for storing program codes and data of the first core network device.
  • the processing module 1522 may be a processor or a controller, such as a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, or a hardware. A component or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module 1523 can be a transceiver, transceiver Circuit or communication interface, etc.
  • the storage module 1521 can be a memory.
  • the first core network device involved in the embodiment of the present invention may be the first core network device shown in FIG.
  • the first core network device 15 includes a processor 1532, a communication interface 1533, a memory 1531, and a bus 1534.
  • the communication interface 1533, the processor 1532, and the memory 1531 are connected to each other through a bus 1534.
  • the bus 1534 may be a peripheral component interconnection standard bus or an extended industry standard structure bus or the like.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 26, but it does not mean that there is only one bus or one type of bus.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware, or may be implemented by a processor executing software instructions.
  • the software instructions can be composed of corresponding software modules, which can be stored in random access memory (English full name: random access memory, English abbreviation: RAM), flash memory, read-only memory (English full name: read only memory, English abbreviation: ROM), erasable programmable read-only memory (English full name: erasable programmable ROM, English abbreviation: EPROM), electrically erasable programmable read-only memory (English full name: electrical EPROM, English abbreviation: EEPROM), registers, hard disk, Mobile hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in a core network interface device.
  • the processor and the storage medium may also exist as discrete components in the core network interface device.
  • the technical solution provided by the embodiment of the present invention is not limited to the 5G Massive IoT and 4G NB-IoT fields, and can also be applied to the industrial field, in particular, the ARPU (English full name: average revenue per user, full name of Chinese: average revenue per user) is lower.
  • the ARPU English full name: average revenue per user, full name of Chinese: average revenue per user
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division, and the actual implementation may have another division manner, such as multiple units or groups. Pieces can be combined or integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical 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 functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (English full name: read-only memory, English abbreviation: ROM), a random access memory (English full name: random access memory, English abbreviation: RAM), magnetic A variety of media that can store program code, such as a disc or a disc.

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Abstract

本发明公开了一种间接通信方法、中继节点、网络设备和系统，涉及通信领域，用于解决终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。该间接通信方法包括：中继节点接收来自终端设备的终端设备消息，将终端设备消息封装在中继节点消息中，并且在中继节点消息中指示封装内容为终端设备消息，将中继节点消息发送给网络选择设备；网络选择设备接收中继节点消息，根据中继节点消息中的终端设备身份信息确定终端设备所属核心网，将终端设备消息发送给终端设备所属核心网对应的第一核心网设备；该对应的第一核心网设备接收终端设备消息，对终端设备消息进行后续处理。本发明的实施例应用于物联网间接通信。

Description

间接通信方法、中继节点、网络设备和系统
本申请要求于2016年8月22日提交中国专利局、申请号为201610701595.2、发明名称为“间接通信方法、中继节点、网络设备和系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信领域，尤其涉及一种间接通信方法、中继节点、网络设备和系统。
背景技术
针对5G的M-IoT(英文全称：massive internet of things，中文全称：大规模物联网)场景或4G中的NB-IoT(英文全称：narrow band internet of things，中文全称：窄带物联网)场景，终端设备(例如终端设备)一般直接接入网络来进行通信。对于网络覆盖不足时或者出于降低终端设备功耗的考虑，终端设备可能需要通过就近的其他中继节点(例如手机终端或网关设备)作为中继，以间接方式接入网络来进行通信。具体的，当终端设备通过近距离连接方式例如蓝牙(英文全称：bluetooth，英文简称：BT)、WiFi(英文全称：wireless fidelity，中文全称：无线保真)等先连到中继节点上，由中继节点进行应用汇聚，再以中继节点的身份接入到网络中，与应用服务器进行通信。
但是由于终端设备是以中继节点的身份接入到网络，使得网络侧无法识别终端设备，因此无法对终端设备与中继节点进行差异化管理，例如无法支持终端设备与中继节点连接不同服务器。
发明内容
本发明的实施例提供一种间接通信方法、中继节点、网络设备和系统，用于解决终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
为达到上述目的，本发明的实施例采用如下技术方案：
一方面，本发明实施例提供了一种间接通信方法，该方法包括：中继节点接收来自终端设备的终端设备消息，其中，终端设备消息中包含终端设备身份信息；中继节点将终端设备消息封装在中继节点消息中，并且在中继节点消息中指示封装内容为终端设备消息；中继节点将中继节点消息发送给网络选择设备，中继节点消息用于由网络选择设备根据其中的终端设备身份信息确定终端设备所属核心网，并由网络选择设备将终端设备消息发送给终端设备所属核心网对应的第一核心网设备，由对应的第一核心网设备对终端设备消息进行后续处理。本发明实施例提供的间接通信方法，通过中继节点接收到来自终端设备的终端设备消息之后，将终端设备消息封装在中继节点消息中，并且在中继节点消息中指示封装内容为终端设备消息，然后向网络选择设备转发，由网络选择设备根据中继节点消息中的终端设备身份信息得到终端设备对应的核心网，然后转发给对应的第一核心网设备，由第一核心网设备对终端设备消息进行后续处理，从而使网络侧能够识别终端设备的身份 信息，并进行相应的处理，进而可以对终端设备消息和中继节点的自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
在一种可能的设计中，在中继节点消息中指示封装内容为终端设备消息，包括：在中继节点消息中通过自定义的中继节点信令来指示封装内容为终端设备消息。该设计提供了一种指示封装内容的方法。
在一种可能的设计中，在中继节点消息中指示封装内容为终端设备消息，包括：在中继节点消息中通过已有的中继节点信令中新增加的信元来指示封装内容为终端设备消息。该设计提供了一种指示封装内容的方法。
在一种可能的设计中，网络选择设备为独立的网络选择网元或核心网设备。该设计使得本发明的网络选择设备可以应用于不同网元。
在一种可能的设计中，中继节点消息中还包含中继节点身份信息，中继节点身份信息用于由网络选择设备将中继节点身份信息添加到终端设备消息中以生成新的终端设备消息并发送给第一核心网设备，由第一核心网设备将新的终端设备消息中的中继节点身份信息和终端设备身份信息存放在本地上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。该设计使得将中继节点身份信息保存在本地上下文中，当下行数据进行下行寻址时，可以根据中继节点身份信息找到对应的中继节点。
在一种可能的设计中，中继节点消息中还包含接入侧信息，接入侧信息用于由网络选择设备将接入侧信息添加到终端设备消息中，由第一核心网设备解析终端设备消息得到接入侧信息，由第一核心网设备将接入侧信息存放在本地上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。该设计使得将接入侧信息保存在本地上下文中，当下行数据进行下行寻址时，可以根据接入侧信息找到对应的中继节点。
在一种可能的设计中，中继节点消息中还包含终端设备接入标识，终端设备接入标识用于由网络选择设备将终端设备接入标识添加到终端设备消息中，由第一核心网设备解析终端设备消息得到终端设备接入标识，由第一核心网设备将终端设备接入标识存放在本地上下文中用于在下行寻址时对终端设备进行寻址。该设计使得将终端设备接入标识保存在本地上下文中，当下行数据进行下行寻址时，可以根据终端设备接入标识找到对应的终端设备。
在一种可能的设计中，该中继节点消息在中继节点的信令面承载或数据面承载。该设计使得当用数据面承载时，比较适合大数据包的传递。
在一种可能的设计中，该方法还包括：中继节点接收下行中继节点消息，其中，下行中继节点消息为根据下行终端设备消息中的中继节点身份信息对来自第一核心网设备的下行终端设备消息进行封装而成，下行终端设备消息为第一核心网设备根据下行数据和本地上下文生成，其中，本地上下文包含中继节点身份信息和终端设备接入标识，下行终端设备消息中包含下行数据、中继节点身份信息和终端设备接入标识；中继节点对下行中继节点消息进行解析得到下行终端设备消息和终端设备接入标识，并根据终端设备接入标识找到对应的终端设备；中继节点将下行终端设备消息发送给对应的终端设备。该设计实现了 借助于上行方向建立的本地上下文为下行数据对中继节点和终端设备寻址提供帮助，从而实现了下行间接通信。
另一方面，本发明实施例提供了一种间接通信方法，该方法包括：网络选择设备接收来自中继节点的中继节点消息，其中，中继节点消息中封装了来自终端设备的终端设备消息，并且在中继节点消息中指示封装内容为终端设备消息，其中，终端设备消息中包含终端设备身份信息；网络选择设备根据中继节点消息中的终端设备身份信息确定终端设备所属核心网；网络选择设备将终端设备消息发送给终端设备所属核心网对应的第一核心网设备，由对应的第一核心网设备对终端设备消息进行后续处理。本发明实施例提供的间接通信方法，通过中继节点接收到来自终端设备的终端设备消息之后，将终端设备消息封装在中继节点消息中，并且在中继节点消息中指示封装内容为终端设备消息，然后向网络选择设备转发，由网络选择设备根据中继节点消息中的终端设备身份信息得到终端设备对应的核心网，然后转发给对应的第一核心网设备，由第一核心网设备对终端设备消息进行后续处理，从而使网络侧能够识别终端设备的身份信息，并进行相应的处理，进而可以对终端设备消息和中继节点的自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
在一种可能的设计中，网络选择设备为独立的网络选择网元或核心网设备。该设计使得本发明的网络选择设备可以应用于不同网元。
在一种可能的设计中，网络选择设备根据中继节点消息中的终端设备身份信息确定终端设备所属核心网，包括：网络选择设备根据中继节点消息指示的封装内容进行判断，当中继节点消息的封装内容为终端设备消息时，由网络选择设备对中继节点消息进行解封装得到终端设备消息，由网络选择设备对终端设备消息进行解封装得到终端设备身份信息，由网络选择设备根据终端设备身份信息判断终端设备所属的核心网。该设计使得中继节点能够根据中继节点消息中的封装内容进行相应处理，针对封装内容为终端设备消息时，可以根据终端设备身份信息判断终端设备所属的核心网。
在一种可能的设计中，由网络选择设备根据终端设备身份信息判断终端设备所属的核心网，包括：由网络选择设备根据终端设备身份信息从用户数据库获取终端设备的签约信息，并由网络选择设备根据终端设备的签约信息判断终端设备所属的核心网。该设计提供了一各占根据终端设备身份信息判断终端设备所属的核心网的方法。
在一种可能的设计中，网络选择设备将终端设备消息发送给终端设备所属核心网对应的第一核心网设备，由对应的第一核心网设备对终端设备消息进行后续处理，包括：如果网络选择设备为终端设备所属的核心网对应的核心网设备，则网络选择设备对终端设备消息进行后续处理，否则，由网络选择设备将终端设备消息转发给终端设备所属的核心网对应的第一核心网设备，由第一核心网设备对终端设备消息进行后续处理。该设计使得本发明的实施例可以根据终端设备所属的核心网对应的核心网设备对终端设备消息进行后续处理。
在一种可能的设计中，该方法还包括：网络选择设备对中继节点消息进行解封装还得到中继节点身份信息，并由网络选择设备将中继节点身份信息添加到终端设备消息中生成新的终端设备消息并发送给第一核心网设备，由第一核心网设备将新的终端设备消息中的 中继节点身份信息和终端设备身份信息存放在本地上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理，其中，中继节点消息中包含中继节点身份信息。该设计使得将中继节点身份信息保存在本地上下文中，当下行数据进行下行寻址时，可以根据中继节点身份信息找到对应的中继节点。
在一种可能的设计中，该方法还包括：网络选择设备对中继节点消息进行解封装得到接入侧信息，并由网络选择设备将接入侧信息添加到终端设备消息中并发送给第一核心网设备，由第一核心网设备将终端设备消息中的接入侧信息存放在本地上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。该设计使得将接入侧信息保存在本地上下文中，当下行数据进行下行寻址时，可以根据接入侧信息找到对应的中继节点。
在一种可能的设计中，该方法还包括：网络选择设备对中继节点消息进行解封装得到终端设备接入标识，并由网络选择设备将终端设备接入标识添加到终端设备消息中并发送给第一核心网设备，由第一核心网设备将终端设备消息中的终端设备接入标识存放在本地上下文中用于在下行寻址时对终端设备进行寻址。该设计使得将终端设备接入标识保存在本地上下文中，当下行数据进行下行寻址时，可以根据终端设备接入标识找到对应的终端设备。
在一种可能的设计中，中继节点消息在中继节点的信令面承载或数据面承载。该设计使得当用数据面承载时，比较适合大数据包的传递。
在一种可能的设计中，该方法还包括：网络选择设备接收下行终端设备消息，其中，下行终端设备消息由第一核心网设备根据下行数据和本地上下文生成，本地上下文包含中继节点身份信息和终端设备接入标识，下行终端设备消息中包含下行数据、中继节点身份信息和终端设备接入标识；网络选择设备根据下行终端设备消息中的中继节点身份信息将下行终端设备消息封装在下行中继节点消息中；网络选择设备将下行中继节点消息发送给中继节点，下行中继节点消息用于由中继节点对下行中继节点消息进行解析得到下行终端设备消息和终端设备接入标识，并由中继节点根据终端设备接入标识找到对应的终端设备，并由中继节点将下行终端设备消息发送给对应的终端设备。该设计实现了借助于上行方向建立的本地上下文为下行数据对中继节点和终端设备寻址提供帮助，从而实现了下行间接通信。
又一方面，本发明实施例提供了一种间接通信方法，该方法包括：第一核心网设备从网络选择设备接收来自终端设备的终端设备消息，其中，第一核心网设备为终端设备所属核心网对应的核心网设备，终端设备所属核心网为网络选择设备根据中继节点消息中的终端设备身份信息而确定，中继节点消息为中继节点对终端设备消息进行封装而成，并且在中继节点消息中指示封装内容为终端设备消息，终端设备消息中包含终端设备身份信息；第一核心网设备对终端设备消息进行后续处理。本发明实施例提供的间接通信方法，通过中继节点接收到来自终端设备的终端设备消息之后，将终端设备消息封装在中继节点消息中，并且在中继节点消息中指示封装内容为终端设备消息，然后向网络选择设备转发，由网络选择设备根据中继节点消息中的终端设备身份信息得到终端设备对应的核心网，然后 转发给对应的第一核心网设备，由第一核心网设备对终端设备消息进行后续处理，从而使网络侧能够识别终端设备的身份信息，并进行相应的处理，进而可以对终端设备消息和中继节点的自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
在一种可能的设计中，该网络选择设备为独立的网络选择网元或核心网设备。该设计使得本发明的网络选择设备可以应用于不同网元。
在一种可能的设计中，该方法还包括：第一核心网设备解析新的终端设备消息得到中继节点身份信息和终端设备身份信息，其中，新的终端设备消息由网络选择设备将中继节点身份信息添加到终端设备消息中而生成；第一核心网设备将中继节点身份信息和终端设备身份信息存放在上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。该设计使得将中继节点身份信息保存在本地上下文中，当下行数据进行下行寻址时，可以根据中继节点身份信息找到对应的中继节点。
在一种可能的设计中，该方法还包括：第一核心网设备解析新的终端设备消息得到接入侧信息，其中，新的终端设备消息由网络选择设备将接入侧信息添加到终端设备消息中而生成；第一核心网设备将接入侧信息存放在上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。该设计使得将接入侧信息保存在本地上下文中，当下行数据进行下行寻址时，可以根据接入侧信息找到对应的中继节点。
在一种可能的设计中，该方法还包括：第一核心网设备解析新的终端设备消息得到终端设备接入标识，其中，新的终端设备消息由网络选择设备将终端设备接入标识添加到终端设备消息中而生成；第一核心网设备将终端设备接入标识存放在上下文中用于在下行寻址时对终端设备进行寻址。该设计使得将终端设备接入标识保存在本地上下文中，当下行数据进行下行寻址时，可以根据终端设备接入标识找到对应的终端设备。
在一种可能的设计中，该中继节点消息在中继节点的信令面承载或数据面承载。该设计使得当用数据面承载时，比较适合大数据包的传递。
在一种可能的设计中，该方法还包括：第一核心网设备接收下行数据；第一核心网设备根据下行数据和本地上下文生成下行终端设备消息，其中，本地上下文包含中继节点身份信息和终端设备接入标识，下行终端设备消息中包含下行数据、中继节点身份信息和终端设备接入标识；第一核心网设备将下行终端设备消息发送给网络选择设备，下行终端设备消息用于由网络选择设备根据下行终端设备消息中的中继节点身份信息将下行终端设备消息封装在下行中继节点消息中，由中继节点对下行中继节点消息进行解析得到下行终端设备消息和终端设备接入标识，并由中继节点根据终端设备接入标识找到对应的终端设备，由中继节点将下行终端设备消息发送给对应的终端设备。该设计实现了借助于上行方向建立的本地上下文为下行数据对中继节点和终端设备寻址提供帮助，从而实现了下行间接通信。
又一方面，本发明实施例提供了一种间接通信方法，该方法包括：中继节点接收到来自终端设备的终端设备消息，其中，终端设备消息中包含终端设备身份信息；中继节点对 终端设备消息进行解析得到终端设备消息的内容，并根据终端设备消息的内容构造代理终端设备消息以终端设备的身份发起消息，其中，代理终端设备消息中包含终端设备身份信息；中继节点将代理终端设备消息发送给网络选择设备，代理终端设备消息用于由网络选择设备根据其中的终端设备身份信息确定终端设备所属核心网，并由网络选择设备将代理终端设备消息发送给终端设备所属核心网对应的第一核心网设备，由对应的第一核心网设备对代理终端设备消息进行后续处理。本发明实施例提供的间接通信方法，通过中继节点模拟终端设备消息，构造代理终端设备消息，其中，代理终端设备消息中包含终端设备身份信息，然后向网络选择设备转发，由网络选择设备根据中继节点消息中的终端设备身份信息得到终端设备对应的核心网，然后转发给对应的第一核心网设备，由第一核心网设备对终端设备消息进行后续处理，从而使网络侧能够识别终端设备的身份信息，并进行相应的处理，进而可以对终端设备消息和中继节点的自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
在一种可能的设计中，该网络选择设备为独立的网络选择网元或核心网设备。该设计使得本发明的网络选择设备可以应用于不同网元。
在一种可能的设计中，该方法还包括：代理终端设备消息中还包含接入侧信息，接入侧信息用于由第一核心网设备接入侧信息存放在本地上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。该设计使得将接入侧信息保存在本地上下文中，当下行数据进行下行寻址时，可以根据接入侧信息找到对应的中继节点。
在一种可能的设计中，该方法还包括：代理终端设备消息中还包含终端设备接入标识，终端设备接入标识用于由第一核心网设备将终端设备接入标识存放在本地上下文中用于在下行寻址时对终端设备进行寻址。该设计使得将终端设备接入标识保存在本地上下文中，当下行数据进行下行寻址时，可以根据终端设备接入标识找到对应的终端设备。
在一种可能的设计中，该方法还包括：中继节点接收下行终端设备消息，其中，下行终端设备消息为第一核心网设备根据下行数据和本地上下文生成，中继节点为网络选择设备根据下行终端设备消息中的终端设备身份信息进行下行寻址找到，其中，本地上下文包含终端设备身份信息和终端设备接入标识，下行终端设备消息中包含下行数据、终端设备身份信息和终端设备接入标识；中继节点对下行终端设备消息进行解析，中继节点根据下行终端设备消息中的终端设备身份接入标识找到对应的终端设备；中继节点将下行终端设备消息发送给对应的终端设备。该设计实现了借助于上行方向建立的本地上下文为下行数据对中继节点和终端设备寻址提供帮助，从而实现了下行间接通信。
又一方面，本发明实施例提供了一种间接通信方法，该方法包括：网络选择设备接收代理终端设备消息，其中，代理终端设备消息由中继节点根据终端设备消息的内容构造而成，代理终端设备消息用于中继节点以终端设备的身份发起消息，终端设备消息的内容由中继节点对来自终端设备的终端设备消息进行解析而得到，终端设备消息中包含终端设备身份信息，代理终端设备消息中包含终端设备身份信息；网络选择设备根据代理终端设备消息中的终端设备身份信息确定终端设备所属核心网；网络选择设备将代理终端设备消息 发送给终端设备所属核心网对应的第一核心网设备，由对应的第一核心网设备对代理终端设备消息进行后续处理。本发明实施例提供的间接通信方法，通过中继节点模拟终端设备消息，构造代理终端设备消息，其中，代理终端设备消息中包含终端设备身份信息，然后向网络选择设备转发，由网络选择设备根据中继节点消息中的终端设备身份信息得到终端设备对应的核心网，然后转发给对应的第一核心网设备，由第一核心网设备对终端设备消息进行后续处理，从而使网络侧能够识别终端设备的身份信息，并进行相应的处理，进而可以对终端设备消息和中继节点的自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
在一种可能的设计中，该网络选择设备为独立的网络选择网元或核心网设备。该设计使得本发明的网络选择设备可以应用于不同网元。
在一种可能的设计中，该网络选择设备根据代理终端设备消息中的终端设备身份信息确定终端设备所属核心网，包括：网络选择设备根据代理终端设备消息中的终端设备身份信息从用户数据库获取终端设备的签约信息，并由网络选择设备根据终端设备的签约信息判断终端设备所属的核心网。该设计提供了一各占根据终端设备身份信息判断终端设备所属的核心网的方法。
在一种可能的设计中，该网络选择设备将代理终端设备消息发送给终端设备所属核心网对应的第一核心网设备，由对应的第一核心网设备对代理终端设备消息进行后续处理，包括：如果网络选择设备为终端设备所属的核心网对应的核心网设备，则网络选择设备对代理终端设备消息进行后续处理，否则，由网络选择设备将代理终端设备消息转发给终端设备所属的核心网对应的第一核心网设备，由第一核心网设备对代理终端设备消息进行后续处理。该设计使得本发明的实施例可以根据终端设备所属的核心网对应的核心网设备对终端设备消息进行后续处理。
在一种可能的设计中，该方法还包括：网络选择设备接收下行终端设备消息，其中，下行终端设备消息由第一核心网设备根据下行数据和本地上下文生成，本地上下文包含终端设备身份信息和终端设备接入标识，下行终端设备消息中包含下行数据、终端设备身份信息和终端设备接入标识；网络选择设备根据下行终端设备消息中的终端设备身份信息进行下行寻址找到对应的中继节点；网络选择设备将下行终端设备消息发送给对应的中继节点，由对应的中继节点对下行终端设备消息进行解析，由对应的中继节点根据下行终端设备消息中的终端设备接入标识找到对应的终端设备，并由对应的中继节点将下行终端设备消息发送给对应的终端设备。该设计实现了借助于上行方向建立的本地上下文为下行数据对中继节点和终端设备寻址提供帮助，从而实现了下行间接通信。
又一方面，本发明实施例提供了一种间接通信方法，该方法包括：第一核心网设备从网络选择设备接收代理终端设备消息，其中，第一核心网设备为终端设备所属核心网对应的核心网设备，终端设备所属核心网为网络选择设备根据代理终端设备消息中的终端设备身份信息而确定，代理终端设备消息由中继节点根据终端设备消息的内容构造而成，代理终端设备消息用于中继节点以终端设备的身份发起消息，终端设备消息的内容由中继节点对来自终端设备的终端设备消息进行解析而得到，终端设备消息中包含终端设备身份信息，代理终端设备消息中包含终端设备身份信息；第一核心网设备对终端设备消息进行后续处 理。本发明实施例提供的间接通信方法，通过中继节点模拟终端设备消息，构造代理终端设备消息，其中，代理终端设备消息中包含终端设备身份信息，然后向网络选择设备转发，由网络选择设备根据中继节点消息中的终端设备身份信息得到终端设备对应的核心网，然后转发给对应的第一核心网设备，由第一核心网设备对终端设备消息进行后续处理，从而使网络侧能够识别终端设备的身份信息，并进行相应的处理，进而可以对终端设备消息和中继节点的自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
在一种可能的设计中，该网络选择设备为独立的网络选择网元或核心网设备。该设计使得本发明的网络选择设备可以应用于不同网元。
在一种可能的设计中，该方法还包括：第一核心网设备解析代理终端设备消息得到接入侧信息，接入侧信息由中继节点携带在代理终端设备消息中；第一核心网设备将接入侧信息存放在上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。该设计使得将接入侧信息保存在本地上下文中，当下行数据进行下行寻址时，可以根据接入侧信息找到对应的中继节点。
在一种可能的设计中，该方法还包括：第一核心网设备解析代理终端设备消息得到终端设备接入标识，终端设备接入标识由中继节点携带在代理终端设备消息中；第一核心网设备将终端设备接入标识存放在上下文中用于在下行寻址时对终端设备进行寻址。该设计使得将终端设备接入标识保存在本地上下文中，当下行数据进行下行寻址时，可以根据终端设备接入标识找到对应的终端设备。
在一种可能的设计中，该中继节点消息在中继节点的信令面承载或数据面承载。该设计使得当用数据面承载时，比较适合大数据包的传递。
在一种可能的设计中，该方法还包括：第一核心网设备接收下行数据；第一核心网设备根据下行数据和本地上下文生成下行终端设备消息，其中，本地上下文包含终端设备身份信息和终端设备接入标识，下行终端设备消息中包含下行数据、终端设备身份信息和终端设备接入标识；第一核心网设备将下行终端设备消息发送给网络选择设备，下行终端设备消息用于由网络选择设备根据下行终端设备消息中的终端设备身份信息进行下行寻址找到对应的中继节点，并将下行终端设备消息转发给对应的中继节点，由对应的中继节点对下行终端设备消息进行解析，由对应的中继节点根据下行终端设备消息中的终端设备接入标识找到对应的终端设备，由对应的中继节点将下行终端设备消息发送给对应的终端设备。该设计实现了借助于上行方向建立的本地上下文为下行数据对中继节点和终端设备寻址提供帮助，从而实现了下行间接通信。
又一方面，本发明实施例提供了一种中继节点，该中继节点可以实现上述方法示例中中继节点所执行的功能，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上述功能相应的模块。
在一种可能的设计中，该装置的结构中包括处理器和收发器，该处理器被配置为支持该装置执行上述方法中相应的功能。该收发器用于支持该装置与其他网元之间的通信。该装置还可以包括存储器，该存储器用于与处理器耦合，其保存该装置必要的程序指令和数据。
又一方面，本发明实施例提供了一种网络选择设备，该装置可以实现上述方法实施例中网络选择设备所执行的功能，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上述功能相应的模块。
在一种可能的设计中，该装置的结构中包括处理器和通信接口，该处理器被配置为支持该装置执行上述方法中相应的功能。该通信接口用于支持该装置与其他网元之间的通信。该装置还可以包括存储器，该存储器用于与处理器耦合，其保存该装置必要的程序指令和数据。
又一方面，本发明实施例提供了一种第一核心网设备，该装置可以实现上述方法实施例中第一核心网设备所执行的功能，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上述功能相应的模块。
在一种可能的设计中，该装置的结构中包括处理器和通信接口，该处理器被配置为支持该装置执行上述方法中相应的功能。该通信接口用于支持该装置与其他网元之间的通信。该装置还可以包括存储器，该存储器用于与处理器耦合，其保存该装置必要的程序指令和数据。
又一方面，本发明实施例提供了一种通信系统，该系统包括上述方面所述的可以实现中继节点的功能的装置、可以实现网络选择设备的功能的装置和可以实现第一核心网设备的功能的装置。
再一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述中继节点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。
再一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述网络选择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。
再一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述第一核心网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，中继节点与网络侧的直接通信，并且支持终端设备通过中继节点与网络侧间接通信，在间接通信时，中继设备转发包含终端设备身份信息的终端设备消息，中继节点通过将终端设备消息封装在中继设备消息中并且指示封装内容为终端设备消息，或者对终端设备消息解析得到终端设备消息的内容，并根据终端设备消息的内容重新构造代理终端设备消息的方式，然后将生成的消息转发给网络侧，使得网络侧能够得到终端设备身份信息并据此识别终端设备，同时对终端设备和中继节点进行独立管理，例如独立的ID、签约、接入鉴权、计费等，并且终端设备和中继节点可以接入不同核心网，从而解决了解决终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
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为本发明的实施例提供的网络通信系统的结构示意图；
图2为本发明的实施例提供的中继节点的硬件结构图；
图3为本发明的实施例提供的网络选择设备的硬件结构图；
图4为本发明的实施例提供的第一核心网设备的硬件结构图；
图5为本发明的实施例提供的第一种间接通信方法的流程示意图；
图6为本发明的实施例提供的第二种间接通信方法的流程示意图；
图7为本发明的实施例提供的第三种间接通信方法的流程示意图；
图8为本发明的实施例提供的第四种间接通信方法的流程示意图；
图9为本发明的实施例提供的第五种间接通信方法的流程示意图；
图10为本发明的实施例提供的第六种间接通信方法的流程示意图；
图11为本发明的实施例提供的第七种间接通信方法的流程示意图；
图12为本发明的实施例提供的第八种间接通信方法的流程示意图；
图13为本发明的实施例提供的第九种间接通信方法的流程示意图；
图14为本发明的实施例提供的第十种间接通信方法的流程示意图；
图15为本发明的实施例提供的第十一种间接通信方法的流程示意图；
图16为本发明的实施例提供的第十二种间接通信方法的流程示意图；
图17为本发明的实施例提供的第十三种间接通信方法的流程示意图；
图18为本发明的实施例提供的一种中继节点的结构示意图；
图19为本发明的实施例提供的又一种中继节点的结构示意图；
图20为本发明的实施例提供的另一种中继节点的结构示意图；
图21为本发明的实施例提供的一种网络选择设备的结构示意图；
图22为本发明的实施例提供的又一种网络选择设备的结构示意图；
图23为本发明的实施例提供的另一种网络选择设备的结构示意图；
图24为本发明的实施例提供的一种核心网设备的结构示意图；
图25为本发明的实施例提供的又一种核心网设备的结构示意图；
图26为本发明的实施例提供的另一种核心网设备的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，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，都属于本发明保护的范围。
如本申请所使用的，术语“组件”、“模块”、“系统”等等旨在指代计算机相关实体，该计算机相关实体可以是硬件、固件、硬件和软件的结合、软件或者运行中的软件。例如，组件可以是，但不限于是：在处理器上运行的处理、处理器、对象、可执行文件、执行中的线程、程序和/或计算机。作为示例，在计算设备上运行的应用和该计算设备都可以是组件。一个或多个组件可以存在于执行中的过程和/或线程中，并且组件可以位于一个计算机中以及/或者分布在两个或更多个计算机之间。此外，这些组件能够从在其上具有各种数据 结构的各种计算机可读介质中执行。这些组件可以通过诸如根据具有一个或多个数据分组(例如，来自一个组件的数据，该组件与本地系统、分布式系统中的另一个组件进行交互和/或以信号的方式通过诸如互联网之类的网络与其它系统进行交互)的信号，以本地和/或远程过程的方式进行通信。
此外，本申请结合无线网络设备来描述各个方面，该接入网设备可以用于与一个或多个中继节点进行通信；终端设备可以为用户设备，可以用于一个或多个用户设备进行通信(比如D2D(英文全称：device to device，中文全称：设备间)通信)，也可以用于与一个或多个接入网设备进行通信。中继节点可以为用户设备，并且可以包括系统、用户单元、用户站、移动站、移动无线终端、移动设备、节点、设备、远程站、远程终端、终端、无线通信设备、无线通信装置或用户代理的功能中的一些或者所有功能。中继节点可以是蜂窝电话、无绳电话、会话发起协议(英文全称：session initiation protocol，简称：SIP)电话、智能电话、无线本地环路(英文全称：wireless local loop，简称：WLL)站、个人数字助理(英文全称：personal digital assistant，简称：PDA)、膝上型计算机、手持式通信设备、手持式计算设备、卫星无线设备、无线调制解调器卡和/或用于在无线系统上进行通信的其它处理设备。接入网设备还可以称为接入点、节点、节点B、演进节点B(eNB)或某种其它网络实体，并且可以包括以上网络实体的功能中的一些或所有功能。接入网设备可以通过空中接口与中继节点进行通信。该通信可以通过一个或多个扇区来进行。接入网设备可以通过将所接收的空中接口帧转换成IP分组，来用作无线终端和接入网络的其余部分之间的路由器，其中所述接入网络包括互联网协议(英文全称：internet protocol，简称：IP)网络。接入网设备还可以对空中接口属性的管理进行协调，并且还可以是有线网络和无线网络之间的网关。
本申请将围绕可包括多个设备、组件、模块等的系统来呈现各个方面、实施例或特征。应当理解和明白的是，各个系统可以包括另外的设备、组件、模块等，并且/或者可以并不包括结合附图讨论的所有设备、组件、模块等。此外，还可以使用这些方案的组合。
另外，在本发明实施例中，“示例的”一词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用示例的一词旨在以具体方式呈现概念。
本发明实施例中，信息(information)，信号(signal)，消息(message)，信道(channel)有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。“的(of)”“相应的(corresponding，relevant)”和“对应的(corresponding)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。
本发明实施例描述的网络架构以及业务场景是为了更加清楚的说明本发明实施例的技术方案，并不构成对于本发明实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本发明实施例提供的技术方案对于类似的技术问题，同样适用。
本发明实施例既可以应用于时分双工(time division duplexing，TDD)的场景，也可以适用于频分双工(frequency division duplexing，FDD)的场景。
本发明实施例依托无线通信网络中4G网络的场景进行说明，应当指出的是，本发明实施例中的方案还可以应用于LTE及其演进技术例如5G中，相应的名称也可以用其他无线通信网络中的对应功能的名称进行替代。
术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量，由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。以下实施例中“第一”和“第二”仅用于区别，如第一核心网设备和第二核心网设备。
本发明实施例提供了一种网络通信系统，参照图1中所示，该系统包括：终端设备11、中继节点(英文全称：relay node)12、接入网设备(英文简称：AN，英文全称：access network)13、网络选择设备14、第一核心网设备(英文全称：core network)15，可选的，该系统还可以包括服务器(英文全称：server)16。
网络选择设备14可以包括网络选择网元(英文全称：network selection function)或第二核心网设备。网络选择设备14主要用于根据终端设备或中继节点的签约信息完成核心网选择与消息分发。在本发明实施例中所述的网络选择设备可以是独立的网络选择网元，或者可以是第二核心网设备。
需要说明的是，第二核心网设备与第一核心网设备同属于核心网设备，其中，第二核心网设备会根据接收到终端设备或中继节点的消息中的终端设备或中继节点的身份信息来从用户数据库中查询对应的签约信息，并根据签约信息来判断终端设备或中继节点所属的核心网，如果恰好第一设备属于该终端设备或中继节点所属的核心网，则对接收到的数据进行后续处理，如果第二核心网设备不属于该终端设备或中继节点所属的核心网，则第二核心网设备会查找属于该核心网的第一核心网设备，并将接收到的数据转发给第一核心网设备，由第一核心网设备进行后续处理；后续处理可以包括但不限于附着/注册、鉴权、加密、接入控制、终端管理、移动性管理、数据报文路由和转发、策略控制、计费、将数据转发给服务器等。
终端设备11可以包括例如M2M(英文全称：machine to machine，中文全称：机器与机器)终端、智能手环等；中继节点12可以包括例如手机终端、网关设备等；接入网设备13，用于将来自中继节点的消息或数据转发给网络选择网元或第二核心网设备，根据网络协议的不同，接入网设备13可以为如3GPP(英文全称：3rd generation partnership project，中文全称：第三代合作伙伴计划)协议中的eNodeB(英文全称：evolved node B，中文全称：演进型节点B)，或WiFi协议中的AP(英文全称：access point，中文全称：接入点)等，在本发明实施例中以eNodeB为例；第一核心网设备15主要用于提供终端的附着/注册、鉴权、加密、接入控制、终端管理、移动性管理、数据报文路由和转发、策略控制、计费等功能，其有可能根据功能、部署位置分为几个模块，在本发明实施例中以M-IoT Core为例；服务器16一般指具体行业中提供业务的应用服务器。
参照图2中所示，为本发明实施例中中继节点的硬件结构图，中继节点12包括通信模块1201、处理器1202、不可擦写存储器1203和可擦写存储器1204，其中，通信模块1201用于中继节点与其他通信设备进行通信，不可擦写存储器1203用于存储可执行程序代码和 参数等，例如内核(英文全称：kernel)、中间件(英文全称：middleware)，应用程序接口(英文全称：application programming interface，英文简称：API)和应用程序等，可擦写存储器1204用于存储变量或者运行程序代码，处理器1202用于控制通信模块1201进行通信，读取不可擦写存储器1203中程序代码和固化参数等，读写可擦写存储器1204执行程序代码或变量等。
参照图3中所示，为本发明实施例中网络选择设备的硬件结构图，网络选择设备14包括通信模块1401、处理器1402、不可擦写存储器1403和可擦写存储器1404，其中，通信模块1401用于网络选择设备14与其他通信设备进行通信，不可擦写存储器1403用于存储可执行程序代码和参数等，例如内核、中间件，应用程序接口和应用程序等，可擦写存储器1404用于存储变量或者运行程序代码，处理器1402用于控制通信模块1401进行通信，读取不可擦写存储器1403中程序代码和固化参数等，读写可擦写存储器1404执行程序代码或变量等。
参照图4中所示，为本发明实施例中第一核心网设备的硬件结构图，第一核心网设备15包括通信模块1501、处理器1502、不可擦写存储器1503和可擦写存储器1504，其中，通信模块1501用于第一核心网设备15与其他通信设备进行通信，不可擦写存储器1503用于存储可执行程序代码和参数等，例如内核、中间件，应用程序接口和应用程序等，可擦写存储器1504用于存储变量或者运行程序代码，处理器1502用于控制通信模块1501进行通信，读取不可擦写存储器1503中程序代码和固化参数等，读写可擦写存储器1504执行程序代码或变量等。
上述通信模块用于将所在设备与其它终端、服务器、网络进行连接。例如，通信接口可以通过有线或无线连接到网络以连接到外部其它的终端或服务器。无线通信可以包括以下至少一种：蓝牙、WiFi、近场通信(英文全称：near field communication，英文简称：NFC)、GPS(英文全称：global positioning system，中文全称：全球定位系统)以及蜂窝通信(英文全称：cellular communication)，例如LTE(英文全称：long term evolution，中文全称：长期演进)、LTE-A(英文全称：long term evolution advanced，中文全称：长期演进技术升级版)、CDMA(英文全称：code division multiple access，中文全称：码分多址)、WCDMA(英文全称：wideband CDMA，中文全称：宽带码分多址)、UMTS(英文全称：universal mobile telecommunication system，中文全称：通用移动通信系统)、WiBro(英文全称：wireless broadband access service，中文全称：无线宽带接入)、GSM(英文全称：global system for mobile communication，中文全称：全球移动通信系统)等。有线通信可以包括以下至少一种：USB(英文全称：universal serial bus，中文全称：通用串行总线)、HDMI(英文全称：high definition multimedia interface，中文全称：)、RS-232(英文全称：recommended standard 232，中文全称：推荐标准232)、POTS(英文全称：plain old telephone service，中文全称：模拟电话业务)。
本发明实施例中所述的终端设备身份信息是指用于标识终端设备的特征的信息，用于唯一标识终端设备，例如IMSI(英文全称：international mobile subscriber identification number中文全称：国际移动用户识别码)、GUTI(英文全称：globally unique  temporary UE identity，中文全称：全球唯一临时UE标识)、TMSI(英文全称：temporary mobile subscriber identification number中文全称：临时移动用户识别码)等终端设备ID等；中继节点身份信息是指用于标识中继节点的特征的信息，用于唯一标识中继节点，例如中继节点ID等；终端设备接入标识是指终端设备与中继节点通信时所采用的标识，例如WiFi协议中的MAC地址，蓝牙协议中的蓝牙标识等。
本发明实施例中所述的终端设备消息是指由终端设备通过中继节点向核心网发送的信令或数据消息；中继节点消息是指中继节点对终端设备消息进行封装所生成的消息，或者是中继节点自身进行业务向核心网发送的信令或数据消息，在对终端设备消息进行封装时或自身进行业务时，中继节点消息均会包含中继节点身份信息。
本发明实施例中所述的用户数据库是指存储用户设备或终端设备等设备在核心网的签约信息的服务器，例如HSS(英文全称：home subscriber server，中文全称：归属签约用户服务器)、HLR(英文全称：home location register，中文全称：归属位置寄存器)等；签约信息是指用户设备或终端设备所签约的业务类型、usage type、device type等。
本发明实施例中所述的接入侧信息用于指示中继节点的接入网信息，如TAI(英文全称：tracking area identity，中文全称：跟踪区标识)、CGI(英文全称：cell global identification，中文全称：小区全球识别码)等。
本发明实施例支持中继节点与网络侧的直接通信，并且支持终端设备通过中继节点与网络侧间接通信，在间接通信时，中继设备转发包含终端设备身份信息的终端设备消息，中继节点通过将终端设备消息封装在中继设备消息中并且指示封装内容为终端设备消息，或者对终端设备消息解析得到终端设备消息的内容，并根据终端设备消息的内容重新构造代理终端设备消息的方式，然后将生成的消息转发给网络侧，使得网络侧能够得到终端设备身份信息并据此识别终端设备，同时对终端设备和中继节点进行独立管理，例如独立的ID、签约、接入鉴权、计费等，并且终端设备和中继节点可以接入不同核心网，从而解决了解决终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
本发明实施例提供了一种间接通信方法，参照图5中所示，该方法包括：
S101、中继节点接收来自终端设备的终端设备消息。
其中，终端设备消息中包含终端设备身份信息。
S102、中继节点将终端设备消息封装在中继节点消息中，并且在中继节点消息中指示封装内容为终端设备消息。
在中继节点消息中指示封装内容为终端设备消息的目的在于：将终端设备消息与中继节点自身进行业务所发送的信令或数据相区别。
可选的，当中继节点自身进行业务发送信令或数据时，中继节点根据中继节点身份信息构建中继节点消息，其中，中继节点消息指示封装内容为中继节点的信令或数据。
S103、中继节点将中继节点消息发送给网络选择设备。
中继节点可以通过接入网设备转发给网络选择设备。
S104、网络选择设备接收中继节点消息。
S105、网络选择设备根据中继节点消息中的终端设备身份信息确定终端设备所属核心网。
网络选择设备首先要对中继节点消息进行解封装才能得到其中的终端设备消息，对终端设备消息进行解封装才能得到其中的终端设备身份信息。
网络选择设备可以根据中继节点消息中的终端设备身份信息查询用户数据库从而得到终端设备的签约信息，并根据终端设备的签约信息确定终端设备所属核心网。
可选的，当中继节点消息的封装内容为中继节点自身进行业务的信令或数据时，网络侧设备解封装中继节点消息可以得到中继节点身份信息。
S106、网络选择设备将终端设备消息发送给终端设备所属核心网对应的第一核心网设备。
S107、该对应的第一核心网设备接收终端设备消息。
S108、该对应的第一核心网设备对终端设备消息进行后续处理。
本发明实施例提供的间接通信方法，通过中继节点接收到来自终端设备的终端设备消息之后，将终端设备消息封装在中继节点消息中，并且在中继节点消息中指示封装内容为终端设备消息，然后向网络选择设备转发，由网络选择设备根据中继节点消息中的终端设备身份信息得到终端设备对应的核心网，然后转发给对应的第一核心网设备，由第一核心网设备对终端设备消息进行后续处理，从而使网络侧能够识别终端设备的身份信息，并进行相应的处理，进而可以对终端设备消息和中继节点的自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
本发明实施例提供了一种间接通信方法，用于系统中网络选择设备为第二核心网设备时，参照图6中所示，该方法包括步骤S201-S215。
S201、终端设备构造终端设备消息，作为数据通过空口传递给中继节点。
其中，终端设备消息包含终端设备身份信息。
终端设备消息可以为信令(英文全称：signaling)或数据(英文全称：data)消息，其中，终端设备消息包含终端设备身份信息，例如终端设备ID(英文全称：identification，中文全称：标识)等，终端设备身份信息作用是唯一标识终端设备。
S202、中继节点接收到终端设备的终端设备消息后，将终端设备消息封装在中继节点消息中，并且在中继节点消息中指示封装内容为终端设备消息，而非中继节点自身进行业务所发送的消息，以便与中继节点自身进行业务所发送的中继节点消息相区别。
可选的，中继节点通过添加报头来将终端设备消息封装在中继节点消息中，其中即包含中继节点身份信息。
中继节点消息可在信令面承载或数据面承载，当采用数据面承载时较适合大数据包的传递。
可选的，可以在中继节点消息中通过自定义的中继节点信令来指示封装内容为终端设备消息，或者，在中继节点消息中通过已有的中继节点信令中新增加的信元来指示封装内容为终端设备消息。
可选的，中继节点消息中还可以包含接入侧信息。
可选的，中继节点消息中还可以包含终端设备接入标识。
该步骤对应于步骤S101和S102。
S203、当中继节点自身进行业务发送信令或数据时，中继节点根据中继节点身份信息构建中继节点消息。
其中，中继节点消息指示封装内容为中继节点的信令或数据。
S204、中继节点将中继节点消息发送给接入网设备。
S205、接入网设备按照通信协议对中继节点消息进行封装以生成接入网设备转发消息。
示例性的，通信协议是指例如3GPP协议或WiFi协议等。
S206、接入网设备将接入网设备转发消息转发给第二核心网设备。
步骤S204-S206对应步骤S103。
S207、第二核心网设备对接入网设备转发消息进行解封装得到中继节点消息，并根据中继节点消息指示的封装内容进行判断，如果中继节点消息的封装内容为终端设备消息，则进行步骤S208，如果中继节点消息的封装内容为中继节点的信令或数据，则进行步骤S212。
S208、如果中继节点消息的封装内容为终端设备消息，则第二核心网设备对中继节点消息进行解封装得到终端设备消息，并对终端设备消息进行解封装得到终端设备身份信息。
可选的，第二核心网设备对中继节点消息进行解封装还能得到中继节点身份信息。
可选的，第二核心网设备对中继节点消息进行解封装还能得到接入侧信息。接入侧信息用于指示中继节点的接入网信息，如TAI、CGI等。
可选的，第二核心网设备对中继节点消息进行解封装还能得到终端设备接入标识。
第二核心网设备还可以对中继节点和终端设备进行鉴权。
S209、第二核心网设备根据终端设备身份信息查询用户数据库获得终端设备的签约信息，并根据终端设备的签约信息判断终端设备所属的核心网。
步骤S207-S209对应于步骤S105。
S210、如果第二核心网设备为终端设备所属的核心网对应的核心网设备，则第二核心 网设备对终端设备消息进行后续处理，否则，第二核心网设备将终端设备消息发送给终端设备所属的核心网对应的第一核心网设备。
可选的，第二核心网设备可以通过将对中继节点消息进行解封装过程中得到的继节点身份信息，添加到终端设备消息中并发送给第一核心网设备。
可选的，第二核心网设备可以将接入侧信息添加到终端设备消息中并发送给第一核心网设备。
可选的，第二核心网设备可以将终端设备接入标识添加到终端设备消息中并发送给第一核心网设备。
该步骤对应于步骤S106。
S211、由第一核心网设备解析终端设备消息得到终端设备身份信息，并由第一核心网设备对终端设备消息进行后续处理。
可选的，第一核心网设备还可以对上述终端设备消息进行解析以得到中继节点身份信息，并将中继节点身份信息和终端设备身份信息存放在本地上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。
可选的，第一核心网设备还可以对上述终端设备消息进行解析以得到接入侧信息，并将接入侧信息存放在本地上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。
可选的，第一核心网设备还可以对上述终端设备消息进行解析以得到终端设备接入标识，并将终端设备接入标识存放在本地上下文中用于在下行寻址时对终端设备进行寻址。
可选的，第一核心网设备将可以将该终端设备身份信息发送给对应的服务器。
该步骤对应于步骤S108。
S212、如果中继节点消息的封装内容为中继节点自身进行业务发送的信令或数据，则第二核心网设备对中继节点消息进行解封装得到中继节点身份信息。
S213、第二核心网设备根据中继节点身份信息查询用户数据库获得中继节点的签约信息，并根据中继节点的签约信息判断中继节点所属的核心网。
S214、如果第二核心网设备为中继节点所属的核心网对应的核心网设备，则第二核心网设备根据对中继节点消息进行后续处理，否则，第二核心网设备将中继节点消息发送给中继节点所属的核心网对应的第一核心网设备。
S215、第一核心网设备解析中继节点消息得到中继节点身份信息，并对中继节点消息进行后续处理。
本发明实施例提供的间接通信方法，当中继节点接收到终端设备的终端设备消息后，通过中继节点将终端设备消息封装在中继节点消息中，并且在中继节点消息中指示封装内容为终端设备消息，进行转发时，由第二核心网设备根据终端设备消息中的终端设备身份 信息查询用户数据库得到终端设备的签约信息，并根据终端设备的签约信息判断所属核心网，然后将终端设备消息发送给对应的第一核心网设备，由第一核心网设备对终端设备消息进行后续处理，从而使第一核心网设备能够识别终端设备的身份信息，并进行相应处理；当中继节点自身进行业务发送信令或数据时，则中继节点根据中继节点身份信息构建中继节点消息，其中，中继节点消息指示封装内容为中继节点自身进行业务发送的信令或数据，进行转发时，由第二核心网设备根据中继节点消息中的中继节点身份信息查询用户数据库得到中继节点的签约信息，并根据中继节点的签约信息判断所属核心网，然后将中继节点消息发送给对应的第一核心网设备，由第一核心网设备对中继节点消息进行后续处理，从而使网络侧能够识别中继节点的身份信息，并进行相应处理。进而可以对终端设备消息和中继节点自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。而且可以支持将终端设备身份信息和中继节点身份信息发送至不同核心网对应的服务器。
本发明实施例提供了一种间接通信方法，用于系统中存在网络选择网元时，参照图7中所示，该方法包括步骤S301-S315。其中，步骤S301-S305分别与图6中所示步骤S201-S205相同，在此不再赘述。下面对与图6中所示步骤不同部分进行描述。
S306、接入网设备将接入网设备转发消息转发给网络选择网元。
步骤S304-S306对应步骤S103。
S307、网络选择网元对接入网设备转发消息进行解封装得到中继节点消息，并根据中继节点消息指示的封装内容进行判断，如果中继节点消息的封装内容为终端设备消息，则进行步骤S308，如果中继节点消息的封装内容为中继节点自身进行业务发送的信令或数据，则进行步骤S312。
S308、如果中继节点消息封装内容为终端设备消息，则网络选择网元对中继节点消息进行解封装得到终端设备消息，并对终端设备消息进行解封装得到终端设备身份信息。
可选的，网络选择网元对中继节点消息进行解封装还能得到中继节点身份信息。
可选的，网络选择网元对中继节点消息进行解封装还能得到接入侧信息。接入侧信息用于指示中继节点的接入网信息，如TAI、CGI等。
可选的，网络选择网元对中继节点消息进行解封装还能得到终端设备接入标识。
网络选择网元还可以对中继节点和终端设备进行鉴权。
S309、网络选择网元根据终端设备身份信息从用户数据库中获取终端设备的签约信息，并根据终端设备的签约信息判断终端设备所属的核心网。
步骤S307-S309对应于步骤S105。
S310、网络选择网元将终端设备消息转发给终端设备所属的核心网对应的第一核心网设备。
可选的，网络选择网元可以通过将对中继节点消息进行解封装过程中得到的中继节点身份信息添加到终端设备消息中并发送给第一核心网设备。
可选的，网络选择网元还可以将接入侧信息添加到终端设备消息中并发送给第一核心网设备。
可选的，网络选择网元还可以将终端设备接入标识添加到终端设备消息中并发送给第一核心网设备。
该步骤对应于步骤S106。
S311、第一核心网设备解析终端设备消息得到终端设备身份信息，并由第一核心网设备对终端设备消息进行后续处理。
可选的，第一核心网设备还可以对终端设备消息进行解析得到中继节点身份信息，并将中继节点身份信息和终端设备身份信息存放在本地上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。
可选的，第一核心网设备还可以对上述终端设备消息进行解析以得到接入侧信息，并将接入侧信息存放在本地上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。
可选的，第一核心网设备还可以对上述终端设备消息进行解析以得到终端设备接入标识，并将终端设备接入标识存放在本地上下文中用于在下行寻址时对终端设备进行寻址。
可选的，第一核心网设备将可以将该终端设备身份信息发送给对应的服务器。
该步骤对应于步骤S108。
S312、如果中继节点消息的封装内容是中继节点自身进行业务发送的的中继节点消息，则网络选择网元对中继节点消息进行解封装得到中继节点身份信息。
S313、网络选择网元根据中继节点身份信息查询用户数据库获取中继节点的签约信息，并根据中继节点的签约信息判断中继节点所属的核心网。
S314、网络选择网元将中继节点消息转发给中继节点所属的核心网对应的第一核心网设备。
S315、第一核心网设备解析中继节点消息得到中继节点身份信息，并对中继节点消息进行后续处理。
可选的，第一核心网设备可以将中继节点身份信息发送给对应的服务器。
本发明实施例提供的间接通信方法，当中继节点接收到终端设备的终端设备消息后，通过中继节点将终端设备消息封装在中继节点消息中，并且在中继节点消息中指示封装内容为终端设备消息，进行转发时，由网络选择网元根据终端设备消息中的终端设备身份信息查询用户数据库得到终端设备的签约信息，并根据终端设备的签约信息判断所属核心网，然后将代理终端设备消息发送给对应的第一核心网设备，由第一核心网设备对代理终端设 备消息进行后续处理，从而使网络侧能够识别终端设备的身份信息，并进行相应的处理；当中继节点自身进行业务发送信令或数据时，则中继节点根据中继节点身份信息构建中继节点消息，其中，中继节点消息指示封装内容为中继节点自身进行业务发送的信令或数据，进行转发时，由网络选择网元根据中继节点消息中的中继节点身份信息查询用户数据库得到中继节点的签约信息，并根据中继节点的签约信息判断所属核心网，然后将中继节点消息发送给对应的第一核心网设备，由第一核心网设备对中继节点消息进行后续处理，从而使网络侧能够识别中继节点的身份信息，并进行相应的处理。进而可以对终端设备消息和中继节点自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题，而且可以支持将终端设备身份信息和中继节点身份信息发送至不同核心网对应的服务器。
本发明实施例提供了一种间接通信方法，参照图8中所示，该方法包括：
S401、中继节点接收到来自物终端设备的终端设备消息。
其中，终端设备消息中包含终端设备身份信息。
S402、中继节点对终端设备消息进行解析得到终端设备消息的内容，并根据终端设备消息的内容构造代理终端设备消息以终端设备的身份发起消息。
其中，代理终端设备消息中包含终端设备身份信息。
本发明实施例中所述的中继节点以终端设备的身份发起消息是指：其他设备对代理终端设备消息直接进行解析时会得到终端设备身份信息，并以此认为该消息来自终端设备身份信息指示的终端设备。
在中继节点消息中构造代理终端设备消息的目的在于：将终端设备消息与中继节点自身进行业务所发送的信令或数据相区别。
可选的，当中继节点中继节点自身进行业务发送信令或数据时，中继节点根据中继节点身份信息构建中继节点消息，其中，中继节点消息指示封装内容为中继节点自身进行业务发送的信令或数据。
S403、中继节点将代理终端设备消息发送给网络选择设备。
中继节点可以通过接入网设备转发给网络选择设备。
S404、网络选择设备接收代理终端设备消息。
S405、网络选择设备根据代理终端设备消息中的终端设备身份信息确定终端设备所属核心网。
网络选择设备首先要对中继节点消息进行解封装才能得到其中的终端设备消息，对终端设备消息进行解封装才能得到其中的终端设备身份信息。
网络选择设备可以根据中继节点消息中的终端设备身份信息查询用户数据库从而得到终端设备的签约信息，并根据终端设备的签约信息确定终端设备所属核心网。
可选的，当中继节点自身进行业务发送信令或数据时，则网络侧设备解封装中继节点消息可以得到中继节点身份信息。
S406、网络选择设备将代理终端设备消息发送给终端设备所属核心网对应的第一核心网设备。
S407、该对应的第一核心网设备接收到代理终端设备消息。
S408、由该对应的第一核心网设备对代理终端设备消息进行后续处理。
本发明实施例提供的间接通信方法，通过中继节点模拟终端设备消息，构造代理终端设备消息，其中，代理终端设备消息中包含终端设备身份信息，然后向网络选择设备转发，由网络选择设备根据中继节点消息中的终端设备身份信息得到终端设备对应的核心网，然后转发给对应的第一核心网设备，由第一核心网设备对终端设备消息进行后续处理，从而使网络侧能够识别终端设备的身份信息，并进行相应的处理，进而可以对终端设备消息和中继节点的自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
本发明实施例提供了一种间接通信方法，用于系统中缺少网络选择网元时，参照图9中所示，该方法包括：
S501、终端设备构造终端设备消息，作为数据通过空口传递给中继节点。
其中，终端设备消息包含终端设备身份信息。
该步骤与S201相同，在此不再赘述。
S502、中继节点对终端设备消息进行解析得到终端设备消息的内容，并根据终端设备消息的内容构造代理终端设备消息以终端设备的身份发起消息。
代理终端设备消息可以直接体现消息类型，例如，可以体现是附着、签约、接入鉴权、计费等等。
可选的，中继节点根据终端设备身份信息和终端设备消息的内容构造代理终端设备消息以终端设备的身份发起消息。
可选的，代理终端设备消息中还可以包含接入侧信息。
可选的，代理终端设备消息中还可以包含终端设备接入标识。
该步骤对应于步骤S401和S402。
S503、当中继节点自身进行业务发送信令或数据时，则中继节点根据中继节点身份信息构建中继节点消息。
其中，中继节点消息指示封装内容为中继节点自身进行业务发送的信令或数据。
S504、中继节点将代理终端设备消息或中继节点消息发送给接入网设备。
S505、接入网设备按照通信协议对代理终端设备消息或中继节点消息进行封装以生成接入网设备转发消息。
示例性的，通信协议是指例如3GPP协议或WiFi协议等。
S506、接入网设备将接入网设备转发消息转发给第二核心网设备。
步骤S504-S506对应步骤S403。
S507、第二核心网设备对接入网设备转发消息进行解封装得到中继节点消息或代理终端设备消息，再对解封装得到的中继节点消息或代理终端设备消息进行解封装。
S508、如果是对代理终端设备消息进行解封装，则第二核心网设备得到终端设备身份信息，进行步骤S509；如果是对中继节点消息进行解封装，则第二核心网设备得到中继节点身份信息，进行步骤S512。
S509、第二核心网设备根据终端设备身份信息查询用户数据库获得终端设备的签约信息，并根据终端设备的签约信息判断终端设备所属的核心网。
步骤S507-S509对应于步骤S405。
S510、如果第二核心网设备为终端设备所属的核心网对应的核心网设备，则第二核心网设备根据对代理终端设备消息进行后续处理，否则，第二核心网设备将代理终端设备消息发送给终端设备所属的核心网对应的第一核心网设备。
该步骤对应于步骤S406。
S511、由第一核心网设备解析代理终端设备消息得到终端设备身份信息，并由第一核心网设备对代理终端设备消息进行后续处理。
可选的，第一核心网设备还可以对上述代理终端设备消息进行解析以得到接入侧信息，并将接入侧信息存放在本地上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。
可选的，第一核心网设备还可以对上述代理终端设备消息进行解析以得到终端设备接入标识，并将终端设备接入标识存放在本地上下文中用于在下行寻址时对终端设备进行寻址。
可选的，第一核心网设备可以将终端设备身份信息发送给对应的服务器。
该步骤对应于步骤S408。
S512、第二核心网设备根据中继节点身份信息查询用户数据库获得中继节点的签约信息，并根据中继节点的签约信息判断中继节点所属的核心网。
S513、如果第二核心网设备为中继节点所属的核心网对应的核心网设备，则第二核心网设备对中继节点消息进行后续处理，否则，第二核心网设备将中继节点消息发送给中继节点所属的核心网对应的第一核心网设备。
S514、第一核心网设备解析中继节点消息得到中继节点身份信息，并对中继节点消息 进行后续处理。
本发明实施例提供的间接通信方法，当中继节点接收到终端设备的终端设备消息后，通过中继节点模拟终端设备消息，构造代理终端设备消息，其中，代理终端设备消息中包含终端设备身份信息，进行转发时，由第二核心网设备根据代理终端设备消息中的终端设备身份信息查询用户数据库得到终端设备的签约信息，并根据终端设备的签约信息判断所属核心网，然后将终端设备消息发送给对应的第一核心网设备，由第一核心网设备对终端设备消息进行后续处理，从而使网络侧能够识别终端设备的身份信息，并进行相应处理；当中继节点自身进行业务发送信令或数据时，则中继节点根据中继节点身份信息构建中继节点消息，其中，中继节点消息指示封装内容为中继节点自身进行业务发送的信令或数据，进行转发时，由第二核心网设备根据中继节点消息中的中继节点身份信息查询用户数据库得到中继节点的签约信息，并根据中继节点的签约信息判断所属核心网，然后将中继节点消息发送给对应的第一核心网设备，由第一核心网设备对中继节点消息进行后续处理，从而使网络侧能够识别中继节点的身份信息，并进行相应的处理。进而可以对终端设备消息和中继节点自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题，而且可以支持将终端设备身份信息和中继节点身份信息发送至不同核心网对应的服务器。
本发明实施例提供了一种间接通信方法，用于系统中存在网络选择网元时，参照图10中所示，该方法包括步骤S601-S614。其中，步骤S601-S605分别与图9中所示步骤S501-S505相同，在此不再赘述。下面对与图9中所示步骤不同部分进行描述。
S606、接入网设备将接入网设备转发消息转发给网络选择网元。
步骤S604-S606对应步骤S403。
S607、网络选择网元对接入网设备转发消息进行解封装得到中继节点消息或代理终端设备消息，再对解封装得到的中继节点消息或代理终端设备消息进行解封装。
S608、如果是对代理终端设备消息进行解封装，会得到终端设备身份信息，则进行步骤S609，如果是对中继节点消息进行解封装则得到中继节点身份信息，则进行步骤S612。
S609、网络选择网元根据终端设备身份信息从用户数据库中获取终端设备的签约信息，并根据终端设备的签约信息判断终端设备所属的核心网。
步骤S607-S609对应于步骤S405。
S610、网络选择网元将代理终端设备消息转发给终端设备所属的核心网对应的第一核心网设备。
该步骤对应于步骤S406。
S611、第一核心网设备解析代理终端设备消息得到终端设备身份信息，并由第一核心网设备对代理终端设备消息进行后续处理。
可选的，第一核心网设备还可以对上述代理终端设备消息进行解析以得到接入侧信息，并将中接入侧信息存放在本地上下文中用于在下行寻址时对终端设备进行寻址，或者存放在节点管理模块中用于由节点管理模块对中继节点及其所在位置进行管理。
可选的，第一核心网设备还可以对上述代理终端设备消息进行解析以得到终端设备接入标识，并将终端设备接入标识存放在本地上下文中用于在下行寻址时对终端设备进行寻址。
可选的，第一核心网设备将可以将该端设备身份信息发送给对应的服务器。
该步骤对应于步骤S408。
S612、网络选择网元根据中继节点身份信息查询用户数据库获取中继节点的签约信息，并由网络选择网元根据中继节点的签约信息判断中继节点所属的核心网。
S613、由网络选择网元将中继节点消息转发给中继节点所属的核心网对应的第一核心网设备。
S614、第一核心网设备解析中继节点消息得到中继节点身份信息，并对中继节点消息进行后续处理。
可选的，第一核心网设备可以将中继节点身份信息发送给对应的服务器。
本发明实施例提供的间接通信方法，当中继节点接收到终端设备的终端设备消息后，通过中继节点模拟终端设备消息，构造代理终端设备消息，其中，代理终端设备消息中包含终端设备身份信息，进行转发时，由网络选择网元根据代理终端设备消息中的终端设备身份信息查询用户数据库得到终端设备的签约信息，并根据终端设备的签约信息判断所属核心网，然后将代理终端设备消息发送给对应的第一核心网设备，由第一核心网设备对代理终端设备消息进行后续处理，从而使网络侧能够识别终端设备的身份信息，并进行相应处理；当中继节点自身进行业务发送信令或数据时，则中继节点根据中继节点身份信息构建中继节点消息，其中，中继节点消息指示封装内容为中继节点自身进行业务发送的信令或数据，进行转发时，由网络选择网元根据中继节点消息中的中继节点身份信息查询用户数据库得到中继节点的签约信息，并根据中继节点的签约信息判断所属核心网，然后将中继节点消息发送给对应的第一核心网设备，由第一核心网设备对中继节点消息进行后续处理，从而使网络侧能够识别中继节点的身份信息，并进行相应的处理。进而可以对终端设备消息和中继节点自身进行业务发送的信令或数据进行差异化管理，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题，而且可以支持将终端设备身份信息和中继节点身份信息发送至不同核心网对应的服务器。
本发明提供了一种间接通信方法，应用于图6、7中所示下行寻址过程，参照图11中所示，该方法包括：
S701、第一核心网设备接收下行数据。
下行数据可以来自服务器。
S702、第一核心网设备根据下行数据和本地上下文生成下行终端设备消息。
其中，本地上下文包含中继节点身份信息、终端设备身份信息、接入侧信息、终端设备接入标识，下行终端设备消息中包含下行数据、中继节点身份信息和终端设备接入标识。
其中，本地上下文为步骤S211、S311上行传输数据时由第一核心网设备根据终端设备消息或代理终端设备消息中的中继节点身份信息、终端设备身份信息、接入侧信息、终端设备接入标识而得到。
S703、第一核心网设备将下行终端设备消息发送给网络选择设备。
S704、网络选择设备接收下行终端设备消息。
S705、网络选择设备根据下行终端设备消息中的中继节点身份信息将下行终端设备消息封装在下行中继节点消息中。
S706、网络选择设备将下行中继节点消息发送给中继节点。
可选的，网络选择设备通过接入网设备将中继节点消息发送给中继节点。
S707、中继节点接收下行中继节点消息。
S708、中继节点对下行中继节点消息进行解析得到下行终端设备消息和终端设备接入标识，并根据下行终端设备消息中的终端设备接入标识来找到对应终端设备。
S709、中继节点将下行终端设备消息发送给对应终端设备。
本发明的实施例提供的间接通信方法，通过下行数据到达第一核心网设备后，由第一核心网设备根据下行数据和在上行数据传输过程中保存的本地上下文生成下行终端设备消息，网络选择网元根据下行终端设备消息中的中继节点身份信息将下行终端设备消息封装在中继节点消息中经过接入网设备转发给中继节点，由中继节点对下行中继节点消息进行解析，根据其中的终端设备接入标识找到对应终端设备，最终将下行终端设备消息发送给对应终端设备，实现了借助于上行方向建立的本地上下文为下行数据对中继节点和终端设备寻址提供帮助，从而实现了下行间接通信。
本发明提供了一种间接通信方法，应用于图9和10中所示下行寻址过程，参照图12中所示，该方法包括：
S801、第一核心网设备接收下行数据。
下行数据可以来自服务器。
S802、第一核心网设备根据下行数据和本地上下文生成下行终端设备消息。
其中，本地上下文包含终端设备身份信息、终端设备接入标识，下行终端设备消息中包含下行数据、终端设备身份信息和终端设备接入标识。
可选的，本地上下文还可以包含中继节点的接入侧信息。
可选的，下行终端设备消息中还可以包含中继节点的接入侧信息。
其中，本地上下文为步骤S511、S611上行传输数据时由第一核心网设备根据终端设备消息或代理终端设备消息中的终端设备身份信息、接入侧信息、终端设备接入标识而得到。
S803、第一核心网设备将下行终端设备消息发送给网络选择设备。
S804、网络选择设备接收下行终端设备消息。
S805、网络选择设备根据下行终端设备消息中的终端设备身份信息进行下行寻址找到对应的中继节点。
可选的，网络选择设备根据下行终端设备消息中的中继节点的接入侧信息进行下行寻址找到对应的中继节点。
S806、网络选择设备将下行终端设备消息发送给对应的中继节点。
可选的，网络选择设备通过接入网设备将终端设备消息发送给对应的中继节点。
S807、对应的中继节点接收下行终端设备消息。
S808、对应的中继节点对下行终端设备消息进行解析，根据下行终端设备消息中的终端设备接入标识找到对应的终端设备。
可选的，对应的中继节点还可以根据下行终端设备消息中的终端设备身份信息查找该中继节点中的上下文从而找到对应的终端设备接入标识，并根据该终端设备接入标识找到对应的终端设备。
S809、中继节点将下行终端设备消息发送给对应终端设备。
本发明的实施例提供的间接通信方法，通过下行数据到达第一核心网设备后，由第一核心网设备根据下行数据和在上行数据传输过程中保存的本地上下文生成下行终端设备消息，网络选择设备根据下行终端设备消息中的终端设备身份信息进行下行寻址找到对应的中继节点，由中继节点对下行终端设备消息进行解析，根据其中的终端设备接入标识找到对应终端设备，最终将下行终端设备消息发送给对应终端设备，实现了借助于上行方向建立的本地上下文为下行数据对中继节点和终端设备寻址提供帮助，从而实现了下行间接通信。
下面以终端设备附着过程的具体信令流程对图7中所示的间接通信方法进行说明，参照图13中所示，该方法包括：
S901、中继节点首先接入到网络，并在向下的空口侧广播中继节点的PLMN(英文全称：public land mobile network，中文全称：公共陆地移动网络)和Cell id(中文全称：小区标识)。
对于非3GPP协议的空口,则中继节点广播中继节点ID，例如蓝牙协议中的蓝牙标识、WiFi协议中的SSID(英文全称：service set identifier，中文全称：服务集标识)等。
S902、终端设备根据一定的选网策略(如省电)，选择中继节点的终端侧空口发起空口接入。
对于非3GPP协议的空口，例如蓝牙协议或WiFi协议中的空口，则终端设备与中继节点进行相互认证过程和密钥协商。
S903、终端设备构造终端设备NAS(英文全称：non-access-stratum，中文全称：非接入层)消息，作为数据通过间接(英文全称：indirect)空口(例如蓝牙/WiFi/3GPP)传递给中继节点。
示例性的，终端设备NAS消息可以包括例如附着请求(英文全称：attach request)消息，传递的终端设备NAS消息中包含终端设备身份信息，例如终端设备ID。
S904、中继节点将终端设备NAS消息封装在中继节点NAS消息中，通过eNodeB空口传递至蜂窝网络中的eNodeB，同时在中继节点NAS消息中指示中继节点NAS消息封装内容为终端设备NAS消息。
可以通过自定义的中继节点信令消息来进行指示，例如采用中继节点NAS消息，或者通过在已有中继节点NAS消息中新增加的信元来指示，指示封装的内容可以包括终端设备NAS消息以及终端设备ID。
在中继节点NAS消息中指示中继节点NAS消息封装内容为终端设备NAS消息的目的在于与中继节点自身进行业务所发送的中继节点NAS消息相区别。
该步骤对应于步骤S302和S304。
S905、接入网设备eNodeB将此中继节点NAS消息封装在S1AP消息(英文全称：S1application protocol，中文全称：S1应用协议)中，作为接入网设备转发消息发送给网络选择设备。
该步骤对应于步骤S305和S306。
S906、当中继节点自身进行业务发送信令或数据时，中继节点根据中继节点身份信息构建中继节点NAS消息并发送给接入网设备eNodeB。
其中，中继节点NAS消息指示封装内容为中继节点自身进行业务发送的信令或数据。
S907、接入网设备eNodeB将中继节点NAS消息转发给网络选择网元。
S908、网络选择设备对S1AP进行解封装得到其中的中继节点NAS消息，根据解封装得到的中继节点NAS消息指示的封装内容进行判断，如果解封装得到的中继节点NAS消息指示封装内容终端设备NAS消息，则进行步骤S909，如果解封装得到的中继节点NAS消息是中继节点自身进行业务发送的中继节点NAS消息，则进行步骤S911：
该步骤对应于步骤S307。
S909、如果解封装得到的中继节点NAS消息指示封装内容终端设备NAS消息，则网络选择设备对中继节点NAS消息进行解析，得到终端设备NAS消息，然后对终端设备NAS消息进行解析以获取终端设备身份信息(例如终端设备ID)，根据终端设备身份信息选择对应 的M-IoT Core。
具体的，可以有两种方式S9091和S9092：
S9091、网络选择设备根据中继节点NAS消息中的设备访问(英文全称：device access)ID，查找本地配置的策略进行核心网M-IoT Core选择。
S9092、网络选择设备根据中继节点NAS消息中封装的终端设备NAS消息中的终端设备身份信息ID(例如IMSI/GUTI/TMSI等)，从用户数据库HSS(英文全称：home subscriber server，中文全称：归属签约用户服务器)中获取终端设备的签约信息(只获取部分与M-IoT Core相关的签约信息即可)，以此选择核心网M-IoT Core。
这里只需获取首个终端设备NAS消息(无加密)中的终端设备IMSI，并将终端设备的IMSI、设备访问ID、所选择的M-IoT Core之间的映射关系保存在本地上下文中，以供后续NAS消息的转发使用(此时，只需识别外层中继节点NAS中的设备访问ID)。
同时，网络选择设备从S1-AP和UE NAS中获取RAN侧信息(如TAI(英文全称：tracking area identity，中文全称：跟踪区标识)/CGI(英文全称：cell global identification，中文全称：小区全球识别码)、中继节点ID(可先进行鉴权)、终端设备ID等，将这些信息增加在终端设备NAS消息头中，将终端设备NAS消息转发到M-IoT Core进行处理。
步骤S909对应于步骤S308和S309。
S910、网络选择设备通过将中继节点身份信息和终端设备身份信息添加到终端设备NAS消息中，并发送给对应的第一核心网设备M-IoT Core。
该步骤对应于步骤S310。
S911、第一核心网设备M-IoT Core接收到终端设备NAS消息后，完成相应的鉴权/授权/安全流程，完成附着过程。同时，将获取的中继节点身份信息、TAI、CGI、终端设备身份信息(例如终端设备ID，例如蓝牙标识、MAC(英文全称：media access control中文全称：媒体访问控制)等)，存放在本地上下文中，用于在下行寻址时对中继节点的寻址。
该步骤对应于步骤S311。
S912、如果解封装得到的中继节点NAS消息是中继节点自身进行业务发送的中继节点NAS消息，则网络选择设备选择第一核心网设备进行消息分发。
该步骤对应于步骤S312-S315，在此不再赘述。
本发明的实施例提供的间接通信方法，通过中继节点将终端设备NAS消息封装在中继节点NAS消息中，同时在中继节点NAS消息中指示中继节点NAS消息封装内容为终端设备NAS消息，然后由网络选择设备根据解封装得到的中继节点NAS消息指示的封装内容进行判断，如果解封装得到的中继节点NAS消息指示封装内容终端设备NAS消息，则对中继节点NAS消息进行解析，得到终端设备NAS消息，然后对终端设备NAS消息进行解析以获取终端设备身份信息，并根据终端设备身份信息从用户数据库HSS获取终端设备的签约信息，以此选择第一核心网设备M-IoT Core，并把终端设备NAS消息发送给对应的第一核心网设备 M-IoT Core，使得第一核心网设备得以通过终端设备NAS消息获取终端设备身份信息，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
下面以终端设备发起上行MO(英文全称：mobile originated，中文全称：移动台主叫)业务流程对图7中所示的间接通信方法进行说明，参照图14中所示，该方法包括：
S1001、终端设备将MO业务数据封装在终端设备NAS消息(data service request)中，作为数据通过间接空口传递给中继节点。
S1002、中继节点将此终端设备NAS消息封装在中继节点NAS消息中依次传递给eNodeB、网络选择设备进行处理，由网络选择设备发给对应的第一核心网设备M-IoT Core。
步骤S1002的处理流程与上述终端设备附着过程中步骤S904-S910中的处理流程类似，在此不再赘述。
S1003、第一核心网设备M-IoT Core对终端设备NAS消息中封装的业务数据进行解析，并进行一定的协议封装后发给应用服务器。
本发明的实施例提供的间接通信方法，通过中继节点将此终端设备NAS消息封装在中继节点NAS消息中依次传递给eNodeB、网络选择设备进行处理，由网络选择设备发给对应M-IoT Core，M-IoT Core对终端设备NAS消息中封装的业务数据进行解析，使得第一核心网设备能够对上行终端设备NAS消息中的数据进行处理。
下面以下行MT(英文全称：mobile terminated，中文全称：移动台被呼)业务流程对图6、7、9、10和11中步骤所述的下行方向对终端设备进行寻址的过程进行说明，参照图15中所示，该方法包括：
S1101、应用服务器发起MO业务数据(携带外部设备ID)，传递到第一核心网设备M-IoT Core。
S1102、M-IoT Core进行协议解封装处理后，根据本地上下文，获取中继节点身份信息(中继节点ID)，根据本地上下文，或从用户数据库HSS查询中继节点所在的接入侧信息TAI/CGI(解决中继节点移动问题)。将MT业务数据封装在下行的终端设备NAS消息中，下发给网络选择设备。
下行的终端设备NAS消息中携带中继节点ID、TAI/CGI、终端设备ID等信元。
该步骤对应于步骤S702和S703。
S1103、网络选择设备根据中继节点身份信息(中继节点ID)、TAI/CGI等信息将终端设备NAS封装在中继节点NAS消息或S1AP中，传递给接入网设备eNodeB。
如果中继节点处于空闲态(可根据S1接口状态判断)，则网络选择设备先发起寻呼消息，等中继节点响应后，再下发包含MT数据的中继节点NAS消息或S1AP。
S1104、NodeB作为接入网设备将中继节点NAS消息传递给中继节点。
步骤S1103和S1104对应于步骤S705和S706。
S1105、中继节点对中继节点NAS消息中解析出的终端设备NAS消息中的终端设备身份信息(例如终端设备ID)与本地保留的终端设备身份信息进行对应，然后将解析出的终端设备NAS消息下传给对应终端设备。
如果此时终端设备处于空闲态或中继节点中已经没有终端设备身份信息，则eNodeB发起寻呼或重新配对连接，终端设备连接到中继节点后，中继节点再下发包含MT数据的终端设备NAS消息。
该步骤对应于步骤S708和S709。
本发明的实施例提供的间接通信方法，应用服务器发起MO业务数据，传递到第一核心网设备M-IoT Core，由M-IoT Core进行协议解封装处理后，根据本地上下文，获取中继节点身份信息(中继节点ID)，根据本地上下文，或从用户数据库HSS查询中继节点所在的TAI/CGI信息(解决中继节点移动问题)。将MT业务数据封装在下行的终端设备NAS消息中，下发给网络选择设备，网络选择设备根据中继节点身份信息将终端设备NAS封装在中继节点NAS消息通过接入网设备eNodeB传递给中继节点，中继节点对中继节点NAS消息中解析出的终端设备NAS消息中的终端设备身份信息找到对应终端设备，然后将解析出的终端设备NAS消息下传给对应终端设备，从而实现了下行方向传输数据时，利用上下文对终端设备进行寻址。
下面以终端设备附着过程的具体信令流程对图10中所示的间接通信方法进行说明，参照图16中所示，该方法包括S1201-S1211，其中步骤S1201-S1203分别与图13中所示步骤S901-S903相同，在此不再赘述。下面对与图13中所示步骤不同部分进行描述。
S1204、中继节点接收到终端设备NAS消息之后，对终端设备NAS消息进行解析得到终端设备NAS消息的内容(附着请求)，并根据终端设备NAS消息的内容(附着请求)构造代理终端设备NAS消息以终端设备的身份发起消息，通过网络选择设备eNodeB空口传递至蜂窝网络中的接入网设备eNodeB。
该步骤对应于步骤S602和S604。
S1205、当中继节点自身进行业务发送信令或数据时，中继节点根据中继节点身份信息构建中继节点NAS消息并发送给接入网设备eNodeB。
其中，中继节点NAS消息指示封装内容为中继节点自身进行业务发送的信令或数据。
该步骤与步骤S905相同，并且该步骤对应于步骤S603。
S1206、接入网设备eNodeB将此中继节点NAS消息封装在S1AP消息(英文全称：S1application protocol，中文全称：S1应用协议)中，将接入网设备转发消息发送给网络选择设备。
该步骤与步骤S906相同，并且该步骤对应于步骤S605和S606。
S1207、网络选择设备对S1AP进行解封装，如果解封装得到的代理中继节点NAS消息，则进行步骤S1208，如果解封装得到的中继节点NAS消息，则进行步骤S1210。
该步骤与步骤S907相同，并且该步骤对应于步骤S607。
S1208、如果解封装得到代理中继节点NAS消息，则网络选择设备对代理中继节点NAS消息进行解析，得到终端设备身份信息(例如终端设备ID)，根据终端设备身份信息选择对应的M-IoT Core。
具体的，可以有两种方式S12081和S12082：
S12081、网络选择设备根据代理中继节点NAS消息中的设备访问(英文全称：device access)ID，查找本地配置的策略进行M-IoT Core选择。
S12082、网络选择设备根据代理中继节点NAS消息中封装的终端设备ID(例如IMSI(英文全称：international mobile subscriber identification number中文全称：国际移动用户识别码)/GUTI(英文全称：globally unique temporary UE identity，中文全称：全球唯一临时UE标识)/TMSI(英文全称：temporary mobile subscriber identification number中文全称：临时移动用户识别码)等)，从用户数据库HSS(英文全称：home subscriber server，中文全称：归属签约用户服务器)中获取终端设备的签约信息(只获取部分与M-IoT Core相关的签约信息即可)，以此选择M-IoT Core。
这里只需获取首个终端设备IMSI，并将终端设备的IMSI、设备访问ID、所选择的M-IoT Core之间的映射关系保存在本地上下文中，以供后续NAS消息的转发使用(此时，只需识别外层中继节点NAS中的设备访问ID)。
同时，网络选择设备从S1-AP和UE NAS中获取RAN侧信息(如TAI(英文全称：tracking area identity，中文全称：跟踪区标识)/CGI(英文全称：cell global identification，中文全称：小区全球识别码)、中继节点id(可先进行鉴权)、终端设备ID等，将这些信息增加在代理中继节点NAS消息头中，将代理中继节点NAS消息转发到M-IoT Core进行处理。
步骤S1208对应于步骤S608和S609。
S1209、网络选择设备将代理终端设备NAS消息发送给对应的M-IoT Core。
该步骤对应于步骤S610-S611。
S1210、M-IoT Core接收到并解析代理终端设备NAS消息后，完成相应的鉴权/授权/安全流程，完成附着过程。同时，将获取的中继节点身份信息、TAI、CGI、终端设备身份信息(例如终端设备ID，例如蓝牙标识、MAC(英文全称：media access control中文全称：媒体访问控制)等)，存放在本地上下文中，用于在下行寻址时对中继节点的寻址。
该步骤对应于步骤S612。
S1211、如果解封装得到中继节点NAS消息，则网络选择设备进行消息分发。
该步骤对应于步骤S613-S616，在此不再赘述。
本发明的实施例提供的间接通信方法，中继节点接收到终端设备NAS消息之后，对终端设备NAS消息进行解析得到终端设备NAS消息的内容，并根据终端设备NAS消息的内容构造代理终端设备NAS消息以模拟终端设备的身份发起消息，网络选择设备对代理中继节点NAS消息进行解析，得到终端设备身份信息，并根据终端设备身份信息从用户数据库HSS中获取终端设备的签约信息并以此选择M-IoT Core，M-IoT Core对代理终端设备NAS消息进行解析以获取终端设备身份信息，使得第一核心网设备M-IoT Core得以通过终端设备NAS消息获取终端设备身份信息，解决了终端设备以中继节点的身份接入到网络，使得网络侧无法识别终端设备的问题。
下面以终端设备发起上行MO(英文全称：mobile originated，中文全称：移动台主叫)业务流程对图10中所示的间接通信方法进行说明，参照图17中所示，该方法包括：
S1301、终端设备将MO业务数据封装在终端设备NAS消息(data service request)中，作为数据通过间接空口传递给中继节点。
S1302、中继节点接收到终端设备NAS消息之后，对终端设备NAS消息进行解析得到终端设备NAS消息的内容(MO业务数据)，并根据终端设备NAS消息的内容(MO业务数据)构造代理终端设备NAS消息以终端设备的身份发起消息，并依次传递给eNodeB、网络选择设备进行处理，由网络选择设备发给对应M-IoT Core。
步骤S1302的处理流程与上述终端设备附着过程中步骤。S1204-S1210中的处理流程类似，区别在于终端设备NAS消息的内容为MO业务数据，在此不再赘述。
S1303、M-IoT Core对代理终端设备NAS消息中封装的业务数据进行解析，并进行一定的协议封装后发给应用服务器。
本发明的实施例提供的间接通信方法，终端设备将MO业务数据封装在终端设备NAS消息中，中继节点接收到终端设备NAS消息之后，对终端设备NAS消息进行解析得到终端设备NAS消息的内容(MO业务数据)，并根据终端设备NAS消息的内容(MO业务数据)构造代理终端设备NAS消息以终端设备的身份发起消息，并依次传递给eNodeB、网络选择设备进行处理，由网络选择设备发给对应M-IoT Core，使得M-IoT Core对代理终端设备NAS消息中封装的业务数据进行解析，使得第一核心网设备能够对上行终端设备NAS消息中的数据进行处理。
上述主要从各个网元之间交互的角度对本发明实施例提供的方案进行了介绍。可以理解的是，各个网元，例如中继节点和网络选择设备等为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
本发明实施例可以根据上述方法示例对中继节点和网络选择设备等进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本发明实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在采用对应各个功能划分各个功能模块的情况下，图18示出了上述实施例中所涉及的中继节点的一种可能的结构示意图，中继节点12包括：封装单元1211、通信单元1212、解析单元1213。封装单元1211用于支持中继节点12执行图5中的过程S102、图6中的过程S202和S203、图7中的过程S302和S303、图8中的过程S402、图9中的过程S502和S503、图10中的过程S602和S603、图13中的过程S904、图14中的过程S1002；通信单元1212用于支持中继节点12执行图5中的过程S101和S103、图6中的过程S202和S204、图7中的过程S302和S304、图8中的过程S401和S403、图9中的过程S502和S504、图10中的过程S602和S604、图11中的过程S707和S709、图12中的过程S807和S809、图13中的过程S904、图14中的过程S1002、图15中的过程S1105、图16中的过程S1205；解析单元1213用于支持中继节点12执行图11中的过程S708、图12中的过程S808、图15中的过程S1105、图16中的过程S1204、图17中的过程S1302。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在采用集成的单元的情况下，图19示出了上述实施例中所涉及的中继节点的一种可能的结构示意图。中继节点12包括：处理模块1222和通信模块1223。处理模块1222用于对中继节点的动作进行控制管理，例如，处理模块1222用于支持中继节点12执行图5中的过程S102、图6中的过程S202和S203、图7中的过程S302和S303、图8中的过程S402、图9中的过程S502和S503、图10中的过程S602和S603、图13中的过程S904、图14中的过程S1002、图11中的过程S708、图12中的过程S808、图15中的过程S1105、图16中的过程S1204、图17中的过程S1302，和/或用于本文所描述的技术的其它过程。通信模块1223用于支持中继节点12与其他网络实体的通信，例如与图1、图3、图4中示出的功能模块或网络实体之间的通信。中继节点12还可以包括存储模块1221，用于存储中继节点的程序代码和数据。
其中，处理模块1222可以是处理器或控制器，例如可以是中央处理器(英文全称：central processing unit，英文简称：CPU)，通用处理器，数字信号处理器(英文全称：Digital Signal Processor，英文简称：DSP)、专用集成电路(英文全称：application-specific integrated circuit，英文简称：ASIC)、现场可编程门阵列(英文全称：field programmable gate array，英文简称：FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信模块1223可以是收发器、收发电路或通信接口等。存储模块1221可以是存储器。
当处理模块1222为处理器，通信模块1223为收发器，存储模块1221为存储器时，本 发明实施例所涉及的中继节点可以为图20中所示的中继节点。
参阅图20所示，该中继节点12包括：处理器1232、收发器1233、存储器1231以及总线1234。其中，收发器1233、处理器1232以及存储器1231通过总线1234相互连接；总线1234可以是外设部件互连标准(英文全称：peripheral component interconnect，英文简称：PCI)总线或扩展工业标准结构(英文全称：extended industry standard architecture，英文简称：EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图20中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在采用对应各个功能划分各个功能模块的情况下，图21示出了上述实施例中所涉及的网络选择设备的一种可能的结构示意图，网络选择设备14包括：获取单元1411，通信单元1412、判断单元1413、解封装单元1414、封装单元1415。获取单元1411用于支持网络选择设备14执行图5中的过程S105、图8中的过程S405、图12中的过程S805、图13中的过程S909、图16中的过程S1209；通信单元1412用于支持网络选择设备14执行图5中的过程S104和S106、图6中的过程S210和S214、图7中的过程S310和S314、图8中的过程S304和S306、图9中的过程S510和S513、图10中的过程S610和S613、图11中的过程S704和S706、图12中的过程S804和S806、图13中的过程S910、图15中的过程S1103、图16中的过程S1210；判断单元1413用于支持网络选择设备14执行图6中的过程S207、S209和S213、图7中的过程S307、S309和S313、图9中的过程S507、S509和S513、图10中的过程S607、S609和S613、图13中的过程S908、图16中的过程S1208；解封装单元1414用于支持网络选择设备14执行图6中的过程S208和S212、图7中的过程S308和S312、图9中的过程S508和S512、图10中的过程S608和S612、图13中的过程S908、图16中的过程S1208；封装单元1415用于支持网络选择设备14执行图11中的过程S705、图13中的过程S910、图15中的过程S1103、图16中的过程S1210。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在采用集成的单元的情况下，图22示出了上述实施例中所涉及的网络选择设备的一种可能的结构示意图。网络选择设备14包括：处理模块1422和通信模块1423。处理模块1422用于对网络选择设备的动作进行控制管理，例如，处理模块1422用于支持网络选择设备执行图5中的过程S105、图8中的过程S405、图12中的过程S805、图13中的过程S909、图16中的过程S1209、图6中的过程S207、S209和S213、图7中的过程S307、S309和S313、图9中的过程S507、S509和S513、图10中的过程S607、S609和S613、图13中的过程S908、图16中的过程S1208、图6中的过程S208和S212、图7中的过程S308和S312、图9中的过程S508和S512、图10中的过程S608和S612、图13中的过程S908、图16中的过程S1208、图11中的过程S705、图13中的过程S910、图15中的过程S1003、图16中的过程S1210，和/或用于本文所描述的技术的其它过程。通信模块1423用于支持网络选择设备与其他网络实体的通信，例如与图1、图2或图4中示出的功能模块或网络实体之间的通信。网络选择设备还可以包括存储模块1421，用于存储网络选择设备的程序代码和数据。
其中，处理模块1422可以是处理器或控制器，例如可以是中央处理器，通用处理器， 数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信模块1423可以是收发器、收发电路或通信接口等。存储模块1421可以是存储器。
当处理模块1422为处理器，通信模块1423为通信接口，存储模块1421为存储器时，本发明实施例所涉及的网络选择设备可以为图23所示的网络选择设备。
参阅图23所示，该网络选择设备14包括：处理器1432、通信接口1433、存储器1431以及总线1434。其中，通信接口1433、处理器1432以及存储器1431通过总线1434相互连接；总线1434可以是外设部件互连标准总线或扩展工业标准结构总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图23中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在采用对应各个功能划分各个功能模块的情况下，图24示出了上述实施例中所涉及的第一核心网设备的一种可能的结构示意图，第一核心网设备15包括：通信单元1511、处理单元1512。通信单元1511用于支持第一核心网设备15执行图5中的过程S107、图11中的过程S701和S703、图12中的过程S801和S803、图13中的过程S911、图14中的过程S1003、图15中的过程S1102、图17中的过程S1303；处理单元1512用于支持第一核心网设备15执行图5中的过程S108、图6中的过程S211和S215、图7中的过程S311和S315、图8中的过程S408、图9中的过程S511和S514、图10中的过程S611和S614、图11中的过程S702、图12中的过程S802、图13中的过程S911、图14中的过程S1003、图15中的过程S1102、图16中的过程S1210、图17中的过程S1303。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在采用集成的单元的情况下，图25示出了上述实施例中所涉及的第一核心网设备的一种可能的结构示意图。第一核心网设备15包括：处理模块1522和通信模块1523。处理模块1522用于对第一核心网设备的动作进行控制管理，例如，处理模块1522用于支持第一核心网设备执行图5中的过程S108、图6中的过程S211和S215、图7中的过程S311和S315、图8中的过程S408、图9中的过程S511和S514、图10中的过程S611和S614、图11中的过程S702、图12中的过程S802、图13中的过程S911、图14中的过程S1003、图15中的过程S1102、图16中的过程S1210、图17中的过程S1303，和/或用于本文所描述的技术的其它过程。通信模块1523用于支持第一核心网设备与其他网络实体的通信，例如与图1、图2或图3中示出的功能模块或网络实体之间的通信。第一核心网设备还可以包括存储模块1521，用于存储第一核心网设备的程序代码和数据。
其中，处理模块1522可以是处理器或控制器，例如可以是中央处理器，通用处理器，数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信模块1523可以是收发器、收发 电路或通信接口等。存储模块1521可以是存储器。
当处理模块1522为处理器，通信模块1523为通信接口，存储模块1521为存储器时，本发明实施例所涉及的第一核心网设备可以为图26所示的第一核心网设备。
参阅图26所示，该第一核心网设备15包括：处理器1532、通信接口1533、存储器1531以及总线1534。其中，通信接口1533、处理器1532以及存储器1531通过总线1534相互连接；总线1534可以是外设部件互连标准总线或扩展工业标准结构总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图26中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
结合本发明公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(英文全称：random access memory，英文简称：RAM)、闪存、只读存储器(英文全称：read only memory，英文简称：ROM)、可擦除可编程只读存储器(英文全称：erasable programmable ROM，英文简称：EPROM)、电可擦可编程只读存储器(英文全称：electrically EPROM，英文简称：EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于核心网接口设备中。当然，处理器和存储介质也可以作为分立组件存在于核心网接口设备中。
本发明实施例提供的技术方案不限于5G Massive IoT、4G NB-IoT领域，也可以应用于工业领域，特别是ARPU(英文全称：average revenue per user，中文全称：每用户平均收入)值较低有省电需求，终端设备数量巨大，存在终端管理需求，对中继节点有一定控制能力的应用场景。
应理解，在本发明的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、设备和方法，可以通过其它的方式实现。例如，以上所描述的设备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，设备或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
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。
所述功能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部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(英文全称:read-only memory，英文简称：ROM)、随机存取存储器(英文全称：random access memory，英文简称：RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (56)

  1. 一种间接通信方法，其特征在于，所述方法包括：
    中继节点接收来自终端设备的终端设备消息，其中，所述终端设备消息中包含终端设备身份信息；
    所述中继节点将所述终端设备消息封装在中继节点消息中，并且在所述中继节点消息中指示封装内容为终端设备消息；
    所述中继节点将所述中继节点消息发送给网络选择设备，所述中继节点消息用于由所述网络选择设备根据其中的终端设备身份信息确定所述终端设备所属核心网，并由所述网络选择设备将所述终端设备消息发送给所述终端设备所属核心网对应的第一核心网设备，由所述对应的第一核心网设备对所述终端设备消息进行后续处理。
  2. 根据权利要求1所述的方法，其特征在于：
    所述中继节点消息中还包含中继节点身份信息，所述中继节点身份信息用于由所述网络选择设备将所述中继节点身份信息添加到所述终端设备消息中以生成新的终端设备消息并发送给所述第一核心网设备，由所述第一核心网设备将所述新的终端设备消息中的所述中继节点身份信息和所述终端设备身份信息存放在本地上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理。
  3. 根据权利要求1所述的方法，其特征在于：
    所述中继节点消息中还包含接入侧信息，所述接入侧信息用于由所述网络选择设备将所述接入侧信息添加到所述终端设备消息中，由所述第一核心网设备解析所述终端设备消息得到所述接入侧信息，由所述第一核心网设备将所述接入侧信息存放在所述本地上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在所述节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理。
  4. 根据权利要求1所述的方法，其特征在于：
    所述中继节点消息中还包含终端设备接入标识，所述终端设备接入标识用于由所述网络选择设备将所述终端设备接入标识添加到所述终端设备消息中，由所述第一核心网设备解析所述终端设备消息得到所述终端设备接入标识，由所述第一核心网设备将所述终端设备接入标识存放在所述本地上下文中用于在下行寻址时对所述终端设备进行寻址。
  5. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述中继节点接收下行中继节点消息，其中，所述下行中继节点消息为根据下行终端设备消息中的中继节点身份信息对来自所述第一核心网设备的下行终端设备消息进行封装而成，所述下行终端设备消息为所述第一核心网设备根据下行数据和所述本地上下文生成，其中，所述本地上下文包含中继节点身份信息和终端设备接入标识，所述下行终端设备消息中包含所述下行数据、所述中继节点身份信息和所述终端设备接入标识；
    所述中继节点对所述下行中继节点消息进行解析得到所述下行终端设备消息和所述终端设备接入标识，并根据所述终端设备接入标识找到对应的终端设备；
    所述中继节点将所述下行终端设备消息发送给所述对应的终端设备。
  6. 一种间接通信方法，其特征在于，所述方法包括：
    网络选择设备接收来自中继节点的中继节点消息，其中，所述中继节点消息中封装了来自终端设备的终端设备消息，并且在所述中继节点消息中指示封装内容为终端设备消息，其中，所述终端设备消息中包含终端设备身份信息；
    所述网络选择设备根据中继节点消息中的终端设备身份信息确定所述终端设备所属核心网；
    所述网络选择设备将所述终端设备消息发送给所述终端设备所属核心网对应的第一核心网设备，由所述对应的第一核心网设备对所述终端设备消息进行后续处理。
  7. 根据权利要求6所述的方法，其特征在于，所述网络选择设备根据中继节点消息中的终端设备身份信息确定所述终端设备所属核心网，包括：
    所述网络选择设备根据所述中继节点消息指示的封装内容进行判断，当所述中继节点消息的封装内容为终端设备消息时，由所述网络选择设备对所述中继节点消息进行解封装得到所述终端设备消息，由所述网络选择设备对所述终端设备消息进行解封装得到所述终端设备身份信息，由所述网络选择设备根据所述终端设备身份信息判断所述终端设备所属的核心网。
  8. 根据权利要求7所述的方法，其特征在于，所述由所述网络选择设备根据所述终端设备身份信息判断所述终端设备所属的核心网，包括：
    由所述网络选择设备根据所述终端设备身份信息从用户数据库获取所述终端设备的签约信息，并由所述网络选择设备根据所述终端设备的签约信息判断所述终端设备所属的核心网。
  9. 根据权利要求6所述的方法，其特征在于，所述网络选择设备将所述终端设备消息发送给所述终端设备所属核心网对应的第一核心网设备，由所述对应的第一核心网设备对所述终端设备消息进行后续处理，包括：
    如果所述网络选择设备为所述终端设备所属的核心网对应的核心网设备，则所述网络选择设备对所述终端设备消息进行后续处理，否则，由所述网络选择设备将所述终端设备消息转发给所述终端设备所属的核心网对应的第一核心网设备，由所述第一核心网设备对所述终端设备消息进行后续处理。
  10. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    所述网络选择设备对所述中继节点消息进行解封装还得到中继节点身份信息，并由所述网络选择设备将所述中继节点身份信息添加到所述终端设备消息中生成新的终端设备消息并发送给所述第一核心网设备，由所述第一核心网设备将所述新的终端设备消息中的所述中继节点身份信息和所述终端设备身份信息存放在本地上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在节点管理模块中用于由所述节点管理模块对所述中继节点及其所在 位置进行管理，其中，所述中继节点消息中包含所述中继节点身份信息。
  11. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    所述网络选择设备对所述中继节点消息进行解封装得到接入侧信息，并由所述网络选择设备将所述接入侧信息添加到所述终端设备消息中并发送给所述第一核心网设备，由所述第一核心网设备将所述终端设备消息中的所述接入侧信息存放在所述本地上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在所述节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理。
  12. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    所述网络选择设备对所述中继节点消息进行解封装得到终端设备接入标识，并由所述网络选择设备将所述终端设备接入标识添加到所述终端设备消息中并发送给所述第一核心网设备，由所述第一核心网设备将所述终端设备消息中的所述终端设备接入标识存放在所述本地上下文中用于在下行寻址时对所述终端设备进行寻址。
  13. 根据权利要求6所述的方法，其特征在于，所述方法还包括：
    所述网络选择设备接收下行终端设备消息，其中，所述下行终端设备消息由所述第一核心网设备根据下行数据和本地上下文生成，所述本地上下文包含中继节点身份信息和所述终端设备接入标识，所述下行终端设备消息中包含下行数据、所述中继节点身份信息和所述终端设备接入标识；
    所述网络选择设备根据所述下行终端设备消息中的中继节点身份信息将所述下行终端设备消息封装在下行中继节点消息中；
    所述网络选择设备将所述下行中继节点消息发送给所述中继节点，所述下行中继节点消息用于由所述中继节点对所述下行中继节点消息进行解析得到所述下行终端设备消息和所述终端设备接入标识，并由所述中继节点根据所述终端设备接入标识找到对应的终端设备，并由所述中继节点将所述下行终端设备消息发送给所述对应的终端设备。
  14. 一种间接通信方法，其特征在于，所述方法包括：
    第一核心网设备从网络选择设备接收来自终端设备的终端设备消息，其中，所述第一核心网设备为所述终端设备所属核心网对应的核心网设备，所述终端设备所属核心网为所述网络选择设备根据中继节点消息中的终端设备身份信息而确定，所述中继节点消息为中继节点对所述终端设备消息进行封装而成，并且在所述中继节点消息中指示封装内容为终端设备消息，所述终端设备消息中包含终端设备身份信息；
    所述第一核心网设备对所述终端设备消息进行后续处理。
  15. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述第一核心网设备解析新的终端设备消息得到中继节点身份信息和所述终端设备身份信息，其中，所述新的终端设备消息由所述网络选择设备将所述中继节点身份信息添加到所述终端设备消息中而生成；
    所述第一核心网设备将所述中继节点身份信息和所述终端设备身份信息存放在上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理。
  16. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述第一核心网设备解析新的终端设备消息得到接入侧信息，其中，所述新的终端设备消息由所述网络选择设备将所述接入侧信息添加到所述终端设备消息中而生成；
    所述第一核心网设备将所述接入侧信息存放在上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理。
  17. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述第一核心网设备解析新的终端设备消息得到终端设备接入标识，其中，所述新的终端设备消息由所述网络选择设备将所述终端设备接入标识添加到所述终端设备消息中而生成；
    所述第一核心网设备将所述终端设备接入标识存放在上下文中用于在下行寻址时对所述终端设备进行寻址。
  18. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述第一核心网设备接收下行数据；
    所述第一核心网设备根据所述下行数据和本地上下文生成下行终端设备消息，其中，所述本地上下文包含中继节点身份信息和所述终端设备接入标识，所述下行终端设备消息中包含下行数据、所述中继节点身份信息和所述终端设备接入标识；
    所述第一核心网设备将所述下行终端设备消息发送给所述网络选择设备，所述下行终端设备消息用于由所述网络选择设备根据下行终端设备消息中的中继节点身份信息将所述下行终端设备消息封装在下行中继节点消息中，由所述中继节点对所述下行中继节点消息进行解析得到所述下行终端设备消息和所述终端设备接入标识，并由所述中继节点根据所述终端设备接入标识找到对应的终端设备，由所述中继节点将所述下行终端设备消息发送给所述对应的终端设备。
  19. 一种间接通信方法，其特征在于，所述方法包括：
    中继节点接收到来自终端设备的终端设备消息，其中，所述终端设备消息中包含终端设备身份信息；
    所述中继节点对所述终端设备消息进行解析得到所述终端设备消息的内容，并根据所述终端设备消息的内容构造代理终端设备消息以所述终端设备的身份发起消息，其中，所述代理终端设备消息中包含所述终端设备身份信息；
    所述中继节点将所述代理终端设备消息发送给网络选择设备，所述代理终端设备消息用于由所述网络选择设备根据其中的终端设备身份信息确定所述终端设备所属核心网，并由所述网络选择设备将所述代理终端设备消息发送给所述终端设备所属核心网对应的第一核心网 设备，由所述对应的第一核心网设备对所述代理终端设备消息进行后续处理。
  20. 根据权利要求19所述的方法，其特征在于，所述方法还包括：
    所述代理终端设备消息中还包含接入侧信息，所述接入侧信息用于由所述第一核心网设备所述接入侧信息存放在所述本地上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在所述节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理。
  21. 根据权利要求19所述的方法，其特征在于，所述方法还包括：
    所述代理终端设备消息中还包含终端设备接入标识，所述终端设备接入标识用于由所述第一核心网设备将所述终端设备接入标识存放在所述本地上下文中用于在下行寻址时对所述终端设备进行寻址。
  22. 根据权利要求19所述的方法，其特征在于，所述方法还包括：
    所述中继节点接收下行终端设备消息，其中，所述下行终端设备消息为所述第一核心网设备根据下行数据和所述本地上下文生成，所述中继节点为所述网络选择设备根据所述下行终端设备消息中的终端设备身份信息进行下行寻址找到，其中，所述本地上下文包含终端设备身份信息和终端设备接入标识，所述下行终端设备消息中包含所述下行数据、所述终端设备身份信息和所述终端设备接入标识；
    所述中继节点对所述下行终端设备消息进行解析，所述中继节点根据所述下行终端设备消息中的终端设备身份接入标识找到对应的终端设备；
    所述中继节点将所述下行终端设备消息发送给所述对应的终端设备。
  23. 一种间接通信方法，其特征在于，所述方法包括：
    网络选择设备接收代理终端设备消息，其中，所述代理终端设备消息由中继节点根据终端设备消息的内容构造而成，所述代理终端设备消息用于所述中继节点以所述终端设备的身份发起消息，所述终端设备消息的内容由所述中继节点对来自终端设备的终端设备消息进行解析而得到，所述终端设备消息中包含终端设备身份信息，所述代理终端设备消息中包含所述终端设备身份信息；
    网络选择设备根据所述代理终端设备消息中的终端设备身份信息确定所述终端设备所属核心网；
    所述网络选择设备将所述代理终端设备消息发送给所述终端设备所属核心网对应的第一核心网设备，由所述对应的第一核心网设备对所述代理终端设备消息进行后续处理。
  24. 根据权利要求23所述的方法，其特征在于，所述网络选择设备根据所述代理终端设备消息中的终端设备身份信息确定所述终端设备所属核心网，包括：
    所述网络选择设备根据所述代理终端设备消息中的所述终端设备身份信息从用户数据库获取所述终端设备的签约信息，并由所述网络选择设备根据所述终端设备的签约信息判断所述终端设备所属的核心网。
  25. 根据权利要求23所述的方法，其特征在于，所述网络选择设备将所述代理终端设备消息发送给所述终端设备所属核心网对应的第一核心网设备，由所述对应的第一核心网设备对所述代理终端设备消息进行后续处理，包括：
    如果所述网络选择设备为所述终端设备所属的核心网对应的核心网设备，则所述网络选择设备对所述代理终端设备消息进行后续处理，否则，由所述网络选择设备将所述代理终端设备消息转发给所述终端设备所属的核心网对应的第一核心网设备，由所述第一核心网设备对所述代理终端设备消息进行后续处理。
  26. 根据权利要求23所述的方法，其特征在于，所述方法还包括：
    所述网络选择设备接收下行终端设备消息，其中，所述下行终端设备消息由所述第一核心网设备根据下行数据和本地上下文生成，所述本地上下文包含终端设备身份信息和所述终端设备接入标识，所述下行终端设备消息中包含所述下行数据、所述终端设备身份信息和所述终端设备接入标识；
    所述网络选择设备根据所述下行终端设备消息中的终端设备身份信息进行下行寻址找到对应的中继节点；
    所述网络选择设备将所述下行终端设备消息发送给所述对应的中继节点，由所述对应的中继节点对所述下行终端设备消息进行解析，由所述对应的中继节点根据所述下行终端设备消息中的终端设备接入标识找到对应的终端设备，并由所述对应的中继节点将所述下行终端设备消息发送给所述对应的终端设备。
  27. 一种间接通信方法，其特征在于，所述方法包括：
    第一核心网设备从网络选择设备接收代理终端设备消息，其中，所述第一核心网设备为所述终端设备所属核心网对应的核心网设备，所述终端设备所属核心网为所述网络选择设备根据所述代理终端设备消息中的终端设备身份信息而确定，所述代理终端设备消息由所述中继节点根据所述终端设备消息的内容构造而成，所述代理终端设备消息用于所述中继节点以所述终端设备的身份发起消息，所述终端设备消息的内容由所述中继节点对来自终端设备的终端设备消息进行解析而得到，所述终端设备消息中包含所述终端设备身份信息，所述代理终端设备消息中包含所述终端设备身份信息；
    所述第一核心网设备对所述终端设备消息进行后续处理。
  28. 根据权利要求27所述的方法，其特征在于，所述方法还包括：
    所述第一核心网设备解析所述代理终端设备消息得到接入侧信息，所述接入侧信息由所述中继节点携带在所述代理终端设备消息中；
    所述第一核心网设备将所述接入侧信息存放在上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理。
  29. 根据权利要求27所述的方法，其特征在于，所述方法还包括：
    所述第一核心网设备解析所述代理终端设备消息得到终端设备接入标识，所述终端设备接入标识由所述中继节点携带在所述代理终端设备消息中；
    所述第一核心网设备将所述终端设备接入标识存放在上下文中用于在下行寻址时对所述终端设备进行寻址。
  30. 根据权利要求27所述的方法，其特征在于，所述方法还包括：
    所述第一核心网设备接收下行数据；
    所述第一核心网设备根据所述下行数据和本地上下文生成下行终端设备消息，其中，所述本地上下文包含终端设备身份信息和终端设备接入标识，所述下行终端设备消息中包含所 述下行数据、所述终端设备身份信息和所述终端设备接入标识；
    所述第一核心网设备将所述下行终端设备消息发送给所述网络选择设备，所述下行终端设备消息用于由所述网络选择设备根据所述下行终端设备消息中的终端设备身份信息进行下行寻址找到对应的中继节点，并将所述下行终端设备消息转发给所述对应的中继节点，由所述对应的中继节点对所述下行终端设备消息进行解析，由所述对应的中继节点根据所述下行终端设备消息中的终端设备接入标识找到对应的终端设备，由所述对应的中继节点将所述下行终端设备消息发送给所述对应的终端设备。
  31. 一种中继节点，其特征在于，所述中继节点包括：
    接收单元，用于接收来自终端设备的终端设备消息，其中，所述终端设备消息中包含终端设备身份信息；
    封装单元，用于将所述终端设备消息封装在中继节点消息中，并且在所述中继节点消息中指示封装内容为终端设备消息；
    通信单元，用于将所述中继节点消息发送给网络选择设备，所述中继节点消息用于由所述网络选择设备根据其中的终端设备身份信息确定所述终端设备所属核心网，并由所述网络选择设备将所述终端设备消息发送给所述终端设备所属核心网对应的第一核心网设备，由所述对应的第一核心网设备对所述终端设备消息进行后续处理。
  32. 根据权利要求31所述的中继节点，其特征在于，
    所述通信单元，还用于接收下行中继节点消息，其中，所述下行中继节点消息为根据下行终端设备消息中的中继节点身份信息对来自所述第一核心网设备的下行终端设备消息进行封装而成，所述下行终端设备消息为所述第一核心网设备根据下行数据和所述本地上下文生成，其中，所述本地上下文包含中继节点身份信息和终端设备接入标识，所述下行终端设备消息中包含所述下行数据、所述中继节点身份信息和所述终端设备接入标识；
    所述中继节点还包括：解析单元，用于对所述下行中继节点消息进行解析得到所述下行终端设备消息和所述终端设备接入标识，并根据所述终端设备接入标识找到对应的终端设备；
    所述通信单元，还用于将所述下行终端设备消息发送给所述对应的终端设备。
  33. 一种网络选择设备，其特征在于，所述网络选择设备包括：
    通信单元，用于接收来自中继节点的中继节点消息，其中，所述中继节点消息中封装了来自终端设备的终端设备消息，并且在所述中继节点消息中指示封装内容为终端设备消息，其中，所述终端设备消息中包含终端设备身份信息；
    判断单元，用于根据中继节点消息中的终端设备身份信息确定所述终端设备所属核心网；
    所述通信单元，还用于将所述终端设备消息发送给所述终端设备所属核心网对应的第一核心网设备，由所述对应的第一核心网设备对所述终端设备消息进行后续处理。
  34. 根据权利要求33所述的网络选择设备，其特征在于，所述判断单元具体用于：
    所述网络选择设备根据所述中继节点消息指示的封装内容进行判断，当所述中继节点消息的封装内容为终端设备消息时，由所述网络选择设备对所述中继节点消息进行解封装得到所述终端设备消息，由所述网络选择设备对所述终端设备消息进行解封装得到所述终端设备身份信息，由所述网络选择设备根据所述终端设备身份信息判断所述终端设备所属的核心网。
  35. 根据权利要求34所述的网络选择设备，其特征在于，所述判断单元具体用于：
    由所述网络选择设备根据所述终端设备身份信息从用户数据库获取所述终端设备的签约信息，并由所述网络选择设备根据所述终端设备的签约信息判断所述终端设备所属的核心网。
  36. 根据权利要求33所述的网络选择设备，其特征在于，所述通信单元具体用于：
    如果所述网络选择设备为所述终端设备所属的核心网对应的核心网设备，则所述网络选择设备对所述终端设备消息进行后续处理，否则，由所述网络选择设备将所述终端设备消息转发给所述终端设备所属的核心网对应的第一核心网设备，由所述第一核心网设备对所述终端设备消息进行后续处理。
  37. 根据权利要求33所述的网络选择设备，其特征在于，所述网络选择设备还包括：
    解封装单元，用于对所述中继节点消息进行解封装还得到中继节点身份信息，并由所述网络选择设备将所述中继节点身份信息添加到所述终端设备消息中生成新的终端设备消息并发送给所述第一核心网设备，由所述第一核心网设备将所述新的终端设备消息中的所述中继节点身份信息和所述终端设备身份信息存放在本地上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理，其中，所述中继节点消息中包含所述中继节点身份信息。
  38. 根据权利要求33所述的网络选择设备，其特征在于，所述网络选择设备还包括：
    解封装单元，用于对所述中继节点消息进行解封装得到接入侧信息，并由所述网络选择设备将所述接入侧信息添加到所述终端设备消息中并发送给所述第一核心网设备，由所述第一核心网设备将所述终端设备消息中的所述接入侧信息存放在所述本地上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在所述节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理。
  39. 根据权利要求33所述的网络选择设备，其特征在于，所述网络选择设备还包括：
    解封装单元，用于对所述中继节点消息进行解封装得到终端设备接入标识，并由所述网络选择设备将所述终端设备接入标识添加到所述终端设备消息中并发送给所述第一核心网设备，由所述第一核心网设备将所述终端设备消息中的所述终端设备接入标识存放在所述本地上下文中用于在下行寻址时对所述终端设备进行寻址。
  40. 根据权利要求33所述的网络选择设备，其特征在于，
    所述通信单元，还用于接收下行终端设备消息，其中，所述下行终端设备消息由所述第一核心网设备根据下行数据和本地上下文生成，所述本地上下文包含中继节点身份信息和所述终端设备接入标识，所述下行终端设备消息中包含下行数据、所述中继节点身份信息和所述终端设备接入标识；
    所述封装单元，还用于根据所述下行终端设备消息中的中继节点身份信息将所述下行终端设备消息封装在下行中继节点消息中；
    所述通信单元，还用于将所述下行中继节点消息发送给所述中继节点，所述下行中继节点消息用于由所述中继节点对所述下行中继节点消息进行解析得到所述下行终端设备消息和所述终端设备接入标识，并由所述中继节点根据所述终端设备接入标识找到对应的终端设备，并由所述中继节点将所述下行终端设备消息发送给所述对应的终端设备。
  41. 一种第一核心网设备，其特征在于，所述第一核心网设备包括：
    通信单元，用于从网络选择设备接收来自终端设备的终端设备消息，其中，所述第一核心网设备为所述终端设备所属核心网对应的核心网设备，所述终端设备所属核心网为所述网 络选择设备根据中继节点消息中的终端设备身份信息而确定，所述中继节点消息为中继节点对所述终端设备消息进行封装而成，并且在所述中继节点消息中指示封装内容为终端设备消息，所述终端设备消息中包含终端设备身份信息；
    处理单元，用于对所述终端设备消息进行后续处理。
  42. 根据权利要求41所述的第一核心网设备，其特征在于，所述处理单元还用于：
    解析新的终端设备消息得到中继节点身份信息和所述终端设备身份信息，其中，所述新的终端设备消息由所述网络选择设备将所述中继节点身份信息添加到所述终端设备消息中而生成；
    将所述中继节点身份信息和所述终端设备身份信息存放在上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理。
  43. 根据权利要求41所述的第一核心网设备，其特征在于，所述处理单元还用于：
    解析新的终端设备消息得到接入侧信息，其中，所述新的终端设备消息由所述网络选择设备将所述接入侧信息添加到所述终端设备消息中而生成；
    将所述接入侧信息存放在上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理。
  44. 根据权利要求41所述的第一核心网设备，其特征在于，所述处理单元还用于：
    所述第一核心网设备解析新的终端设备消息得到终端设备接入标识，其中，所述新的终端设备消息由所述网络选择设备将所述终端设备接入标识添加到所述终端设备消息中而生成；
    所述第一核心网设备将所述终端设备接入标识存放在上下文中用于在下行寻址时对所述终端设备进行寻址。
  45. 根据权利要求41所述的第一核心网设备，其特征在于，
    所述通信单元，还用于接收下行数据；
    所述处理单元，还用于根据所述下行数据和本地上下文生成下行终端设备消息，其中，所述本地上下文包含中继节点身份信息和所述终端设备接入标识，所述下行终端设备消息中包含下行数据、所述中继节点身份信息和所述终端设备接入标识；
    所述通信单元，还用于将所述下行终端设备消息发送给所述网络选择设备，所述下行终端设备消息用于由所述网络选择设备根据下行终端设备消息中的中继节点身份信息将所述下行终端设备消息封装在下行中继节点消息中，由所述中继节点对所述下行中继节点消息进行解析得到所述下行终端设备消息和所述终端设备接入标识，并由所述中继节点根据所述终端设备接入标识找到对应的终端设备，由所述中继节点将所述下行终端设备消息发送给所述对应的终端设备。
  46. 一种中继节点，其特征在于，所述中继节点包括：
    通信单元，用于接收来自终端设备的终端设备消息，其中，所述终端设备消息中包含终端设备身份信息；
    解析单元，用于对所述终端设备消息进行解析得到所述终端设备消息的内容，并根据所述终端设备消息的内容构造代理终端设备消息以所述终端设备的身份发起消息，其中，所述代理终端设备消息中包含所述终端设备身份信息；
    所述通信单元，还用于将所述代理终端设备消息发送给网络选择设备，所述代理终端设 备消息用于由所述网络选择设备根据其中的终端设备身份信息确定所述终端设备所属核心网，并由所述网络选择设备将所述代理终端设备消息发送给所述终端设备所属核心网对应的第一核心网设备，由所述对应的第一核心网设备对所述代理终端设备消息进行后续处理。
  47. 根据权利要求46所述的中继节点，其特征在于，
    所述通信单元，还用于接收下行终端设备消息，其中，所述下行终端设备消息为所述第一核心网设备根据下行数据和所述本地上下文生成，所述中继节点为所述网络选择设备根据所述下行终端设备消息中的终端设备身份信息进行下行寻址找到，其中，所述本地上下文包含终端设备身份信息和终端设备接入标识，所述下行终端设备消息中包含所述下行数据、所述终端设备身份信息和所述终端设备接入标识；
    所述解析单元，还用于对所述下行终端设备消息进行解析，所述中继节点根据所述下行终端设备消息中的终端设备身份接入标识找到对应的终端设备；
    所述通信单元，还用于将所述下行终端设备消息发送给所述对应的终端设备。
  48. 一种网络选择设备，其特征在于，所述网络选择设备包括：
    通信单元，用于接收代理终端设备消息，其中，所述代理终端设备消息由中继节点根据终端设备消息的内容构造而成，所述代理终端设备消息用于所述中继节点以所述终端设备的身份发起消息，所述终端设备消息的内容由所述中继节点对来自终端设备的终端设备消息进行解析而得到，所述终端设备消息中包含终端设备身份信息，所述代理终端设备消息中包含所述终端设备身份信息；
    判断单元，用于根据所述代理终端设备消息中的终端设备身份信息确定所述终端设备所属核心网；
    所述通信单元，还用于将所述代理终端设备消息发送给所述终端设备所属核心网对应的第一核心网设备，由所述对应的第一核心网设备对所述代理终端设备消息进行后续处理。
  49. 根据权利要求48所述的网络选择设备，其特征在于，所述判断单元具体用于：
    根据所述代理终端设备消息中的所述终端设备身份信息从用户数据库获取所述终端设备的签约信息，并由所述网络选择设备根据所述终端设备的签约信息判断所述终端设备所属的核心网。
  50. 根据权利要求48所述的网络选择设备，其特征在于，所述通信单元，具体用于：
    如果所述网络选择设备为所述终端设备所属的核心网对应的核心网设备，则所述网络选择设备对所述代理终端设备消息进行后续处理，否则，将所述代理终端设备消息转发给所述终端设备所属的核心网对应的第一核心网设备，由所述第一核心网设备对所述代理终端设备消息进行后续处理。
  51. 根据权利要求48所述的网络选择设备，其特征在于，
    所述通信单元，还用于接收下行终端设备消息，其中，所述下行终端设备消息由所述第一核心网设备根据下行数据和本地上下文生成，所述本地上下文包含终端设备身份信息和所述终端设备接入标识，所述下行终端设备消息中包含所述下行数据、所述终端设备身份信息和所述终端设备接入标识；
    所述判断单元，还用于根据所述下行终端设备消息中的终端设备身份信息进行下行寻址找到对应的中继节点；
    所述通信单元，还用于将所述下行终端设备消息发送给所述对应的中继节点，由所述对 应的中继节点对所述下行终端设备消息进行解析，由所述对应的中继节点根据所述下行终端设备消息中的终端设备接入标识找到对应的终端设备，并由所述对应的中继节点将所述下行终端设备消息发送给所述对应的终端设备。
  52. 一种第一核心网设备，其特征在于，所述第一核心网设备包括：
    通信单元，用于从网络选择设备接收代理终端设备消息，其中，所述第一核心网设备为所述终端设备所属核心网对应的核心网设备，所述终端设备所属核心网为所述网络选择设备根据所述代理终端设备消息中的终端设备身份信息而确定，所述代理终端设备消息由所述中继节点根据所述终端设备消息的内容构造而成，所述代理终端设备消息用于所述中继节点以所述终端设备的身份发起消息，所述终端设备消息的内容由所述中继节点对来自终端设备的终端设备消息进行解析而得到，所述终端设备消息中包含所述终端设备身份信息，所述代理终端设备消息中包含所述终端设备身份信息；
    处理单元，用于对所述终端设备消息进行后续处理。
  53. 根据权利要求52所述的第一核心网设备，其特征在于，所述处理单元还用于：
    解析所述代理终端设备消息得到接入侧信息，所述接入侧信息由所述中继节点携带在所述代理终端设备消息中；
    将所述接入侧信息存放在上下文中用于在下行寻址时对所述终端设备进行寻址，或者存放在节点管理模块中用于由所述节点管理模块对所述中继节点及其所在位置进行管理。
  54. 根据权利要求52所述的第一核心网设备，其特征在于，所述处理单元还用于：
    解析所述代理终端设备消息得到终端设备接入标识，所述终端设备接入标识由所述中继节点携带在所述代理终端设备消息中；
    将所述终端设备接入标识存放在上下文中用于在下行寻址时对所述终端设备进行寻址。
  55. 根据权利要求52所述的第一核心网设备，其特征在于，
    所述通信单元，还用于接收下行数据；
    所述处理单元，还用于根据所述下行数据和本地上下文生成下行终端设备消息，其中，所述本地上下文包含终端设备身份信息和终端设备接入标识，所述下行终端设备消息中包含所述下行数据、所述终端设备身份信息和所述终端设备接入标识；
    所述通信单元，还用于将所述下行终端设备消息发送给所述网络选择设备，所述下行终端设备消息用于由所述网络选择设备根据所述下行终端设备消息中的终端设备身份信息进行下行寻址找到对应的中继节点，并将所述下行终端设备消息转发给所述对应的中继节点，由所述对应的中继节点对所述下行终端设备消息进行解析，由所述对应的中继节点根据所述下行终端设备消息中的终端设备接入标识找到对应的终端设备，由所述对应的中继节点将所述下行终端设备消息发送给所述对应的终端设备。
  56. 一种通信系统，包括如权利要求31或32所述的中继节点，如权利要求33-40中任一项所述的网络选择设备以及如权利要求41-45中任一项所述的第一核心网设备，或者，包括如权利要求46或47所述的中继节点，如权利要求48-51中任一项所述的网络选择设备以及如权利要求52-55中任一项所述的第一核心网设备。
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