WO2016161867A1 - 终端直通中继节点的确定、使用方法及装置 - Google Patents

终端直通中继节点的确定、使用方法及装置 Download PDF

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Publication number
WO2016161867A1
WO2016161867A1 PCT/CN2016/076079 CN2016076079W WO2016161867A1 WO 2016161867 A1 WO2016161867 A1 WO 2016161867A1 CN 2016076079 W CN2016076079 W CN 2016076079W WO 2016161867 A1 WO2016161867 A1 WO 2016161867A1
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Prior art keywords
relay
relay node
remote
determining
message
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PCT/CN2016/076079
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English (en)
French (fr)
Inventor
汪颖
张惠英
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电信科学技术研究院
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Publication date
Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to KR1020177031363A priority Critical patent/KR20170132288A/ko
Priority to EP16776042.0A priority patent/EP3282719A4/en
Priority to JP2017551646A priority patent/JP2018514139A/ja
Priority to US15/564,155 priority patent/US10420009B2/en
Publication of WO2016161867A1 publication Critical patent/WO2016161867A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/246—Connectivity information discovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0247—Traffic management, e.g. flow control or congestion control based on conditions of the access network or the infrastructure network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a method for determining, using, and using a device-to-device (D2D) relay node.
  • D2D device-to-device
  • the D2D technology refers to a method in which a neighboring terminal can transmit data through a direct link in a short range, without forwarding through a central node (ie, a base station), and does not need to perform user equipment through a traditional cellular link ( Information transmission between User Equipment, UE).
  • a central node ie, a base station
  • the D2D proximity service includes two categories: D2D discovery and D2D communication.
  • the specific schematic diagram is shown in FIG. 1.
  • the D2D discovery means that the UE uses an Evolved UMTS Terrestrial Radio Access Network (E-UTRAN) to confirm that another UE is in the vicinity thereof.
  • E-UTRAN Evolved UMTS Terrestrial Radio Access Network
  • the D2D UE can use the service to find nearby taxis, find friends nearby, and the like.
  • D2D communication refers to: converting a network communication link into a local direct communication link, which saves a lot of bandwidth and network efficiency; UEs that are close to each other establish a link directly between two UEs (as shown in Figure 1). Therefore, two mutually close UEs that originally communicated through the network communication link can utilize the direct link communication to obtain a stable high-speed and low-cost communication service.
  • the proximity service communication is generally performed under the control or assistance of the network side device, and the eNB may even dynamically allocate resources for the UE performing the proximity service communication.
  • the D2D relay in the related art includes a UE to network relay and a UE to UE relay. among them:
  • the remote UE in the UE to the network relay is in the off-network state, and the UE-to-Network relay node will be the remote UE because the remote UE cannot access the network.
  • the UE to the network relay node routes public safety related service data (including downlink (DL)/uplink (UL)) between the remote UE and the network. data).
  • public safety related service data including downlink (DL)/uplink (UL)
  • the public safety UE in the UE to UE relay can support the relay function, and the public safety UE supporting the relay function can transfer data between two public safety UEs.
  • FIG. 3 shows the public security supporting the relay function. An example of a UE relaying data between two public safety UEs.
  • the public safety UE1 and the public safety UE2 are not adjacent, the public safety UE3 and the public safety UE1 are adjacent, the public safety UE3 and the public safety UE2 are adjacent, and the public safety UE3 supports the relay function.
  • the public safety UE1 wishes to communicate with the public safety UE2, since the two are not adjacent, the public safety UE3 acts as a relay node of this communication, and forwards data between the public safety UE1 and the public safety UE2.
  • the communication initiator can only obtain the UE information adjacent to it in the proximity discovery process, and does not know which UEs support the relay capability, and cannot select a suitable one.
  • UE to network relay or UE to UE (UE-to-UE) relay node to access the network or communicate, there is currently no mechanism for the relay node to activate the relay and deactivate the relay function, which seriously restricts Data transmission efficiency and accuracy of D2D discovery and D2D communication.
  • the purpose of the present disclosure is to provide a method for determining, using, and using a D2D relay node to solve the problem of low D2D discovery efficiency caused by the fact that no relay node activates a relay in the related art.
  • a method for determining a D2D relay node includes:
  • the first user equipment measures its own operating state
  • the self is a relay node, where the operating state is used to describe at least the rights or operating environment or processing capability of the first UE;
  • the first UE notifies itself to other UEs currently using the D2D link as a relay node by using the PC5 interface.
  • the relay node can be quickly determined to perform data transmission in D2D discovery or D2D communication, and the efficiency of D2D discovery or D2D communication is improved.
  • the first UE measures the running state of the first UE, and specifically includes at least one of the following items:
  • the first UE acquires a network side authentication result for its own relay authority
  • the first UE acquires a current access network load amount
  • the first UE acquires a signal quality measurement value of the U U interface thereof;
  • the first UE acquires its current service processing capability
  • the first UE acquires its own geographic location
  • the first UE acquires its own motion speed
  • the first UE acquires a relay requirement of the current remote UE.
  • the first UE determines that the operating state of the first UE is a relay node according to the measurement result, and specifically includes at least one of the following items:
  • the first UE determines that the load of the current access network is less than a set threshold, determining that the first UE is a relay node;
  • the first UE determines that the signal quality measurement value of the U U interface is greater than the set threshold, determining that the first UE is a relay node;
  • the first UE determines that its current service processing capability is greater than a set threshold, it determines that it is a relay node;
  • the first UE determines that it is located at a cell edge location, it determines that it is a relay node
  • the first UE determines that its motion speed is less than a set threshold, determining that it is a relay node
  • the first UE uses the PC5 interface to notify other UEs that currently use the D2D link that the UE is a relay node, and specifically includes:
  • the first UE notifies the other UEs that currently use the D2D link that the UE is a relay node by using a Radio Resource Control (RRC) message of the PC5 interface, where the RRC message carries the middle of the first UE. Following instructions and signs; or,
  • RRC Radio Resource Control
  • the first UE notifies the other UEs currently using the D2D link that the UE is a relay node by using a Master Information Block-Side Link (MIB-SL) message of the PC5 interface, where the MIB-SL message is in the MIB-SL message. Carrying a relay indication and identifier of the first UE.
  • MIB-SL Master Information Block-Side Link
  • the first UE further includes:
  • the first UE When the first UE determines that its operating state does not meet the preset condition, the first UE notifies the other UEs that currently use the D2D link that they are non-relay nodes by using the PC5 interface;
  • the first UE continues to periodically measure its own operating state.
  • the method further includes:
  • the first UE receives a relay discovery message sent by a remote UE in a set range, where the relay discovery message carries a destination relay indication and/or an identifier of the relay node;
  • a method for using a D2D relay node includes:
  • the remote user equipment receives the notification message of the other UEs in the set range, and the notification message is sent by the other UE when determining that the running state of the UE meets the preset condition, where the running state is used to describe at least Describe the permissions or operating environment or processing capabilities of other UEs;
  • the remote UE determines that the other UE is a relay node based on the notification message.
  • the relay node can be quickly determined in D2D discovery or D2D communication, and the relay node is used for data transmission, thereby improving the efficiency of D2D discovery or D2D communication.
  • the remote UE determines, according to the notification message, that the other UE is a relay node. Specifically include:
  • the notification message carries a relay activation indication or/and identifier of the UE
  • the remote UE acquires a notification message of any other UE, and determines that any other UE is a relay node when the relay indication carried in the notification message of the any other UE is a relay deactivation state.
  • the notification message carries a relay deactivation indication or/and an identifier of the UE.
  • the method further includes:
  • the remote UE broadcasts a relay discovery message by using a PC5 interface, where the relay discovery message carries a destination relay indication of the remote UE and/or an identifier of a relay node; and the remote UE receives other relay nodes for After the relay discovery response message returned by the relay discovery message, the D2D communication establishment process is initiated to the other relay nodes.
  • the method further includes:
  • the remote UE When the remote UE needs to perform a device-to-network (D2N) connection with the network side, the D2D communication establishment process with the relay node is initiated by the relay node.
  • D2N device-to-network
  • a method for determining a D2D relay node includes:
  • the first UE receives the relay discovery message sent by the remote UE in the set range, where the relay discovery message carries the destination relay indication and/or the identifier of the relay node;
  • the relay node can be quickly used for data transmission in D2D discovery or D2D communication, which improves the efficiency of D2D discovery or D2D communication.
  • a method for using a D2D relay node includes:
  • the remote UE broadcasts a relay discovery message by using a PC5 interface, where the relay discovery message carries a destination relay indication of the remote UE and/or an identifier of the relay node;
  • the remote UE Receiving, by the remote UE, a relay sent by another relay node for the relay discovery message After the response message, the D2D communication establishment process is initiated to the other relay nodes.
  • the relay node in the D2D discovery or D2D communication, the relay node can be quickly found and used for data transmission, which improves the efficiency of D2D discovery or D2D communication.
  • the remote UE broadcasts the relay discovery message by using the PC5 interface, and specifically includes:
  • the remote UE broadcasts a relay discovery message to other UEs currently using the D2D link through a Radio Resource Control (RRC) message of the PC5 interface; or
  • RRC Radio Resource Control
  • the remote UE broadcasts a relay discovery message to other UEs currently using the D2D link through the MIB-SL message of the PC5 interface.
  • the method further includes:
  • the D2D communication establishment process with the other relay nodes is initiated by the other relay nodes.
  • a determining terminal of a D2D relay node includes:
  • a measuring unit for measuring the operating state of the user
  • a determining unit configured to determine, according to the measurement result, that the operating state of the device is a relay node, wherein the operating state is used to describe at least a permission or an operating environment or a processing capability of the terminal;
  • the communication unit is configured to notify the other UEs currently using the D2D link that they are relay nodes by using the PC5 interface.
  • the relay node in the D2D discovery or D2D communication, the relay node can be quickly found to perform data transmission, and the efficiency of D2D discovery or D2D communication is improved.
  • the measuring unit when the measuring unit measures the running state of the self, the measuring unit specifically includes at least one of the following items:
  • the determining unit determines that the operating state of the device is a relay node according to the measurement result, and specifically includes at least one of the following items:
  • the communication unit is specifically configured to:
  • the radio resource control (RRC) message of the PC5 interface is used to notify the other UEs that are currently using the D2D link to be the relay node, where the RRC message carries the relay indication and identifier of the own terminal; or
  • the MIB-SL message of the PC5 interface is used to notify the other UEs that are currently using the D2D link as the relay node, where the MIB-SL message carries the relay indication and identifier of the own terminal.
  • the communication unit is further configured to:
  • the PC5 interface is used to notify the other UEs that currently use the D2D link that the device is a non-relay node;
  • the measuring unit continues to periodically measure its own operating state.
  • the communication unit is further configured to:
  • the relay discovery message carries the destination relay indication and/or the identifier of the relay node
  • a terminal for using a D2D relay node comprising:
  • a communication unit configured to receive a notification message of another UE in the set range, where the notification message is sent by the other UE when determining that its running state meets a preset condition, where the running state is used to describe at least the Permissions or operating environment or processing capabilities of other UEs;
  • a determining unit configured to determine, according to the notification message, that the other UE is a relay node.
  • the relay node in the D2D discovery or D2D communication, the relay node can be quickly determined and used for data transmission, which improves the efficiency of D2D discovery or D2D communication.
  • the determining unit is specifically configured to:
  • the relay deactivation indication or/and identification of the UE is carried in the UE.
  • the communication unit is further configured to:
  • the relay discovery message Broadcasting a relay discovery message by using a PC5 interface, where the relay discovery message carries a destination relay indication of the remote UE and/or an identifier of a relay node; the remote UE receives another relay node for the relay After discovering the relay discovery response message returned by the message, the D2D communication establishment process is initiated to the other relay nodes.
  • the communication unit is further configured to:
  • a D2D communication establishment process with the relay node is initiated by the relay node.
  • a determining terminal of a D2D relay node includes:
  • a receiving unit configured to receive a relay discovery message sent by a remote UE in the set range, where the relay discovery message carries a destination relay indication and/or an identifier of the relay node;
  • a processing unit configured to send, according to the relay discovery message, a relay sending response message to the remote UE when the self-identification and the relay indication and/or the identifier of the destination relay node are successfully matched, indicating the remote UE Establish D2D communication.
  • the relay node can be quickly utilized for data transmission, thereby improving the efficiency of D2D discovery or D2D communication.
  • a terminal for using a D2D relay node comprising:
  • a first communication unit configured to broadcast a relay discovery message by using a PC5 interface, where the relay discovery message carries a destination relay indication of the remote UE and/or an identifier of the relay node;
  • the second communication unit is configured to initiate a D2D communication establishment process to the other relay nodes after receiving the relay discovery response message returned by the other relay node for the relay discovery message.
  • the relay node can be quickly found and utilized for data transmission, thereby improving the efficiency of D2D discovery or D2D communication.
  • the first communication unit is specifically configured to:
  • RRC Radio Resource Control
  • the relay discovery message is broadcast to other UEs currently using the D2D link through the MIB-SL message of the PC5 interface.
  • the second communication unit is further configured to:
  • a D2D communication establishment process with the other relay nodes is initiated by the other relay nodes.
  • User Equipment includes:
  • a processor for reading a program in the memory performing the following process:
  • Measuring the running state of the self determining that the operating state of the device is a relay node according to the measurement result, wherein the operating state is used to describe at least the end of itself End authority or operating environment or processing capability; use the PC5 interface to notify the other UEs currently using the D2D link as relay nodes through the transceiver.
  • the relay node in the D2D discovery or D2D communication, the relay node can be quickly found to perform data transmission, and the efficiency of D2D discovery or D2D communication is improved.
  • the processor when the processor measures the running status of the processor, it specifically includes at least one of the following items:
  • the processor determines that the running state of the device meets the preset condition, determining that the device is a relay node, specifically including at least one of the following items:
  • the processor is specifically configured to:
  • the radio resource control (RRC) message of the PC5 interface is used to notify the other UEs that currently use the D2D link that the relay node is the relay node, where the RRC message carries the relay indication of the own terminal. Identification; or,
  • the MIB-SL message of the PC5 interface is used to notify the other UEs that are currently using the D2D link as the relay node, where the MIB-SL message carries the relay indication and identifier of the own terminal.
  • the processor is further configured to:
  • the PC5 interface is used to notify the other UEs that currently use the D2D link that the device is a non-relay node;
  • the processor is further configured to:
  • the transceiver Receiving, by the transceiver, a relay discovery message sent by the remote UE in the set range, where the relay discovery message carries the destination relay indication and/or the identifier of the relay node;
  • a transceiver for receiving and transmitting data under the control of a processor.
  • the bus architecture may include any number of interconnected buses and bridges, specifically connected by one or more processors represented by the processor and various circuits of the memory represented by the memory.
  • the bus architecture can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • User Equipment includes:
  • the processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.
  • a processor for reading a program in the memory performing the following process:
  • the relay node in the D2D discovery or D2D communication, the relay node can be quickly determined and used for data transmission, which improves the efficiency of D2D discovery or D2D communication.
  • the processor when the determining that the other UE is a relay node, the processor is specifically configured to:
  • the relay deactivation indication or/and identification of the UE is carried in the UE.
  • the processor is further configured to:
  • the relay discovery message carries a destination relay indication of the remote UE and/or an identifier of a relay node; the remote UE receives another relay node for the relay After discovering the relay discovery response message returned by the message, the D2D communication establishment process is initiated to the other relay nodes by the transceiver.
  • the processor is further configured to:
  • a D2D communication establishment process with the relay node is initiated by the relay node.
  • a transceiver for receiving and transmitting data under the control of a processor.
  • the bus architecture may include any number of interconnected buses and bridges, specifically connected by one or more processors represented by the processor and various circuits of the memory represented by the memory.
  • the bus architecture can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium. For different user devices, users
  • the interface may also be an interface capable of externally connecting the required device, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.
  • User Equipment includes:
  • the processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.
  • a processor for reading a program in the memory performing the following process:
  • the transceiver Receiving, by the transceiver, a relay discovery message sent by the remote UE in the set range, where the relay discovery message carries the destination relay indication and/or the identifier of the relay node; determining the identity of the relay according to the relay discovery message When the relay indication and/or the identifier of the destination relay node is successfully matched, the relay sending response message is sent to the remote UE, indicating that the remote UE establishes D2D communication.
  • the relay node in the D2D discovery or D2D communication, the relay node can be quickly determined and used for data transmission, which improves the efficiency of D2D discovery or D2D communication.
  • a transceiver for receiving and transmitting data under the control of a processor.
  • the bus architecture may include any number of interconnected buses and bridges, specifically connected by one or more processors represented by the processor and various circuits of the memory represented by the memory.
  • the bus architecture can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.
  • User Equipment includes:
  • the processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.
  • a processor for reading a program in the memory performing the following process:
  • the transceiver And transmitting, by the transceiver, a relay discovery message, where the relay discovery message carries a destination relay indication of the remote UE and/or an identifier of the relay node; and receiving, by the other relay node, the return message for the relay discovery message After the relay discovery response message, the D2D communication establishment process is initiated to the other relay nodes.
  • the relay node can be quickly found and utilized for data transmission, thereby improving the efficiency of D2D discovery or D2D communication.
  • the processor when the transceiver broadcasts the relay discovery message through the transceiver, the processor is specifically configured to:
  • RRC Radio Resource Control
  • the relay discovery message is broadcast to other UEs currently using the D2D link through the MIB-SL message of the PC5 interface.
  • the processor is further configured to:
  • a D2D communication establishment process with the other relay nodes is initiated by the other relay nodes.
  • a transceiver for receiving and transmitting data under the control of a processor.
  • the bus architecture may include any number of interconnected buses and bridges, specifically connected by one or more processors represented by the processor and various circuits of the memory represented by the memory.
  • the bus architecture can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.
  • 1 is a schematic diagram of D2D discovery and D2D communication in the related art
  • FIG. 2 is a diagram showing an example of transmitting data through a relay node in a UE to network relay in the related art
  • FIG. 3 is a diagram showing an example of data transmission between a public safety UE that is not adjacent to each other through a relay node in the related art
  • 4A and 4B are schematic diagrams showing two transmission modes in a D2D direct discovery mechanism in the related art
  • FIG. 5 is a schematic flowchart of a method for determining a D2D relay node in at least one embodiment of the present disclosure
  • 6A is a schematic diagram of a protocol stack of a PC5 interface control plane
  • 6B is a schematic diagram of a deactivation process of a D2D relay node in at least one embodiment of the present disclosure
  • FIG. 7 is a schematic flowchart of a method for using a D2D relay node in at least one embodiment of the present disclosure
  • FIG. 8 and FIG. 11 are schematic diagrams of two transmission modes in a D2D direct discovery mechanism in an embodiment of the present disclosure
  • FIG. 9 is a schematic flowchart of a method for determining a D2D relay node in at least one embodiment of the present disclosure.
  • FIG. 10 is a schematic flowchart of a method for using a D2D relay node in at least one embodiment of the present disclosure
  • FIG. 12 is a schematic structural diagram of a determining terminal of a D2D relay node in at least one embodiment of the present disclosure
  • FIG. 13 is a schematic structural diagram of a terminal for using a D2D relay node in at least one embodiment of the present disclosure
  • FIG. 14 is a schematic structural diagram of a determining terminal of a D2D relay node in at least one embodiment of the present disclosure
  • 15 is a schematic structural diagram of a terminal for using a D2D relay node in at least one embodiment of the present disclosure
  • 16 is a schematic structural diagram of a determining terminal of a D2D relay node in at least one embodiment of the present disclosure
  • 17 is a schematic structural diagram of a terminal for using a D2D relay node in at least one embodiment of the present disclosure
  • FIG. 18 is a schematic structural diagram of a determining terminal of a D2D relay node in at least one embodiment of the present disclosure
  • FIG. 19 is a schematic structural diagram of a determining terminal of a D2D relay node in at least one embodiment of the present disclosure.
  • a neighboring in-network UE may be selected for the remote UE to transmit data.
  • This scenario is called UE-to-network relay.
  • the remote UE needs to first find an available UE to the network relay node. Since there is no related solution at present, in the embodiment of the present disclosure, a radio access network (RAN) based mechanism is provided, and the UE to network relay node can dynamically activate/deactivate the relay function, so that The remote UE can find a suitable UE to the network relay node.
  • RAN radio access network
  • This scheme is also applicable to the UE to UE relay scenario for the remote UE to find a suitable UE to the UE relay node to communicate with another remote UE.
  • a D2D link refers to a link that directly communicates between a device and a device
  • a D2N link is a link between a device and a network node.
  • UEs participating in D2D discovery/communication are divided into two roles:
  • the D2D transmitting UE refers to: a UE that transmits a D2D discovery or a D2D communication message;
  • the D2D receiving UE refers to a UE that receives a discovery or D2D communication message sent by the D2D transmitting UE.
  • the D2D discovery method in the embodiment of the present disclosure utilizes the first type.
  • the D2D discovery mechanism that is, the transmitting UE directly sends the D2D discovery signal on the air interface, and the neighboring receiving UE directly performs D2D discovery according to the D2D discovery signal received by the air interface.
  • the process involves only the PC5 interface between the UE and the UE, and there are two transmission modes: Model A ("I am here"), see Figure 4A, and Model B ("Who is there" / "are you there"), see Figure 4B.
  • At least one embodiment of the present disclosure provides a method for determining a D2D relay node, and the specific process is as follows:
  • Step 500 The first UE measures the running state of itself.
  • the first UE measures the running state of the UE, and specifically includes at least one of the following items:
  • the first UE acquires a network side authentication result for its own relay authority
  • the first UE acquires the current access network load
  • the first UE acquires a signal quality measurement value of the U U interface thereof;
  • the first UE acquires its current service processing capability
  • the first UE acquires its own geographic location
  • the first UE acquires its own motion speed
  • the first UE acquires a relay requirement of the current remote UE.
  • Step 501 The first UE determines that the operating state of the first UE is a relay node according to the measurement result, where the operating state is used to describe at least the rights or operating environment or processing capability of the first UE.
  • the first UE determines that the operating state of the first UE is a relay node according to the measurement result, and specifically includes at least one of the following items:
  • the first UE determines that the load amount of the current access network is less than a set threshold, determining that it is a relay node;
  • the first UE determines that the signal quality measurement value of the U U interface is greater than the set threshold, determining that the UE is a relay node;
  • the first UE determines that its current service processing capability is greater than a set threshold, it determines that it is in the middle. Following node
  • the first UE determines that it is located at the cell edge location, it determines that it is a relay node
  • the first UE determines that its motion speed is less than a set threshold, it determines that it is a relay node
  • the first UE determines that the current remote UE's relay demand is greater than the set threshold, it determines that it is a relay node.
  • Step 502 The first UE uses the PC5 interface to notify other UEs that currently use the D2D link that they are relay nodes.
  • the first UE uses the PC5 interface to notify other UEs that currently use the D2D link that they are relay nodes, and specifically includes the following two situations:
  • the first scenario is that the first UE notifies the other UEs that currently use the D2D link that the UE is a relay node by using a Radio Resource Control (RRC) message of the PC5 interface, where the RRC message carries the first UE.
  • RRC Radio Resource Control
  • the first UE determines itself as a relay node according to the network authentication result when the network is accessed, the network load condition, the self-service processing capability, the signal quality of the U U interface, the geographic location of the UE, and the like, and determines when the relay function is activated.
  • the new RRC message of the PC5 interface may be defined to carry a relay indication (Relay indication) and a relay ID (Relay ID) information. When the relay indication is set to "1", the relay activation status is indicated.
  • the second scenario is that the first UE notifies the other UEs that currently use the D2D link that the UE is a relay node by using the MIB-SL message of the PC5 interface, where the MIB-SL message carries the relay indication of the first UE and Logo.
  • the control plane protocol stack on the PC5 interface is as shown in FIG. 6A, and specifically includes an RRC layer, a radio link control (LCC) layer, a medium access control (MAC) layer, and a physical layer (Physical). Layer, PHY), data interaction between UEs in the embodiments of the present disclosure is applied on the RRC layer, so that data transmission between UEs is faster and more reliable.
  • RRC radio link control
  • MAC medium access control
  • PHY Physical layer
  • the first UE determines itself as a relay node according to the network authentication result when the network is accessed, the network load condition, the self-service processing capability, the signal quality of the U U interface, the geographic location of the UE, and the like, and determines when the relay function is activated. It can be implemented by using reserved bits in the PC5 interface MIB-SL message in the related art, carrying a relay indication, relay ID information, and the relay indication can be set to Boolean ( Boolen) value, when set to "1", indicates activation.
  • Boolean Boolen
  • the PC5 interface is The other UEs that currently use the D2D link notify themselves that they are non-relay nodes. It should be noted that after the first UE completes the deactivation of the relay function, the first UE needs to continue to periodically measure its own running state.
  • the relay node determines to deactivate the relay function according to the network load condition when accessing the network, its own service processing capability, the signal quality of the U U interface, and the geographical location of the UE. For example, the network load situation cannot accept new service requirements; or the number of remote UEs under the relay reaches a limit; or the signal quality of the U U interface is poor; or when the UE is located in the middle of the cell; or the UE moves too fast, Based on the above factors, the trunk decides to activate its own relay function and broadcast relay capability information. At this time, the relay can define a new RRC message of the PC5 interface, carrying the relay indication, and relaying the ID information.
  • the relay indication can be set to a Boolean value. When set to "0”, it indicates deactivation. For details, see Figure 6B.
  • the specific format is as follows:
  • the remote node After receiving the information, the remote node can select another relay node to access.
  • the first UE receives a relay discovery message sent by the remote UE in the set range, where the The relay discovery message carries the relay indication of the destination relay node and/or the identifier of the relay node; the first UE determines, according to the discovery message, that the identifier of the destination is successfully matched with the identifier of any destination relay node, and sends the identifier to the remote UE.
  • the relay discovery response message instructs the remote UE to establish D2D communication.
  • At least one embodiment of the present disclosure provides a method for using a D2D relay node, and the specific process is as follows:
  • Step 700 The remote UE receives the notification message of the other UEs in the set range, and the notification message is sent by the other UE when determining that the running state of the UE meets the preset condition, where the running state is used to describe at least the rights of the other UE. Or operating environment or processing capacity;
  • Step 701 The remote UE determines that the other UE is a relay node based on the foregoing notification message.
  • the remote UE determines, according to the notification message, that the other UE is a relay node, and specifically refers to: the remote UE acquires a notification message of any other UE, and determines a relay indication carried in the notification message of the any other UE.
  • the notification message In order to indicate the relay activation state, it is determined that the other UE is a relay node, and the notification message carries the relay indication and/or the identifier of the UE; or the remote UE acquires the notification message of any other UE, and determines the
  • the relay indication carried in the notification message of the other UE is the relay deactivation state
  • the notification message carries the relay deactivation indication or/and the identifier of the UE.
  • the remote UE broadcasts a relay discovery message by using a PC5 interface, where the relay discovery message carries a destination relay indication of the remote UE and/or an identifier of the relay node; the remote UE receives other relay nodes for the middle Following the discovery of the relay discovery response message returned by the message, the D2D or D2N communication establishment process is initiated to the other relay node.
  • the D2D communication establishment process with the relay node is initiated by the relay node; or when the remote UE needs to perform a D2N connection with the network side, The node initiates a D2D communication establishment process with the relay node.
  • the UE to the network relay or the UE to the UE relay node activates the relay function, and the mode A ("I am here") can be referred to FIG.
  • the relay node determines the activation relay function according to the network authentication result, the network load condition, the service processing capability of the U U interface, the signal quality of the U U interface, and the geographical location of the UE.
  • the network authentication result of a certain UE is true (true); or the network load condition is good, and the service request can be accepted; or the number of remote UEs that initiate the relay request does not reach the limit; or the signal quality of the U U interface
  • the UE determines that it is a relay node according to the above factors, determines to activate its own relay function, and broadcasts relay capability information.
  • a new RRC message of the PC5 interface may be defined, carrying a relay indication and relaying ID information. Or it can be implemented by using reserved bits in the PC5 interface MIB-SL message in the related art.
  • the relay indication can be set to a Boolean value. When set to "1", it indicates activation.
  • the specific format is as follows.
  • the remote UE may receive the MIB-SL message or the new RRC message sent by the neighboring relay node, and determine whether the D2D UE has the relay capability according to the content carried therein. If the D2D UE has the relay capability, the remote UE will relay to the relay.
  • the node initiates a subsequent communication establishment process, such as a one-to-one communication establishment process and an IP address allocation process.
  • At least one embodiment of the present disclosure provides a method for determining a D2D relay node, and the specific process is as follows:
  • Step 900 The first UE receives a relay discovery message sent by the remote UE in the set range, where the relay discovery message carries the destination relay indication and/or the identifier of the relay node.
  • Step 901 The first UE sends a relay discovery response message to the remote UE when the first UE determines that the relay identifier and/or the identifier of the destination relay node is successfully matched according to the relay discovery message, and indicates that the remote UE establishes the D2D. Communication.
  • At least one embodiment of the present disclosure provides a method for using a D2D relay node, and the specific process is as follows:
  • Step 100 The remote UE broadcasts a relay discovery message by using a PC5 interface, where the relay is found in the message. Carrying the destination relay indication of the remote UE and/or the identifier of the relay node;
  • Step 101 The remote UE receives a relay discovery response message returned by the other relay node for the relay discovery message, and initiates a D2D communication establishment process to the other relay node.
  • the remote UE broadcasts the relay discovery message by using the PC5 interface, and specifically includes the following two situations:
  • the remote UE broadcasts a relay discovery message to other UEs currently using the D2D link through a radio resource control RRC message of the PC5 interface;
  • the remote UE broadcasts a relay discovery message to other UEs currently using the D2D link through the MIB-SL message of the PC5 interface.
  • the D2D communication establishment process with the other relay node is initiated by the other relay node; or, when the remote UE needs to perform a D2N connection with the network side, The D2D communication establishment process with the other relay nodes is initiated by the other relay nodes described above.
  • the UE to the network relay or the UE to the UE relay node activates the relay function, and the mode B ("Who is there” / "are you there") can be seen in FIG.
  • Step 1 The remote UE broadcasts a relay discovery message in a new RRC message or MIB-SL message of the PC5 interface, and the relay discovery message may carry relay indication information or relay ID information that is of interest to the remote UE.
  • Step 2 The relay node receives the D2D relay discovery message sent by the neighboring remote UE, and determines whether it is necessary to broadcast the relay discovery message response to the remote UE according to the content carried in the information.
  • a certain remote UE assumes that the relay discovery message broadcasted by UE1 carries a relay indication ("1") and a plurality of relay ID information that are of interest to the remote UE, and a certain relay node assumes that UE2 receives
  • the relay discovery message matches its own ID with multiple relay IDs carried in the relay discovery message. If the matching is successful, the relay discovery message response is sent to the UE1; if a remote UE is assumed to be broadcast by the UE3
  • the relay message carries only the relay indication ("1") of interest to the remote UE.
  • the UE2 sends a relay discovery message response to the UE1.
  • the remote UE receives the response message sent by the relay UE, it will initiate a subsequent communication establishment process to the relay node, such as a one-to-one communication establishment process and an IP address allocation process.
  • At least one embodiment of the present disclosure provides a determining terminal of a D2D relay node, including a measuring unit 120, a determining unit 121, and a communication unit 122, where:
  • the measuring unit 120 is configured to measure an operating state of the self
  • the determining unit 121 is configured to determine, according to the measurement result, that the running state of the device is a relay node, where the operating state is used to describe at least the rights or operating environment or processing capability of the terminal;
  • the communication unit 122 is configured to notify other UEs currently using the D2D link that they are relay nodes by using the PC5 interface.
  • the relay node in the D2D discovery or D2D communication, the relay node can be quickly found to perform data transmission, and the efficiency of D2D discovery or D2D communication is improved.
  • the measuring unit 120 when the measuring unit 120 measures the running state of the self, the measuring unit 120 specifically includes at least one of the following items:
  • the determining unit 121 determines that the operating state of the device is a relay node according to the measurement result, and specifically includes at least one of the following items:
  • the communication unit 122 is specifically configured to:
  • the RRC message of the PC5 interface is used to notify the other UEs that are currently using the D2D link that the relay node is the relay node, where the RRC message carries the relay indication and identifier of the own terminal; or
  • the MIB-SL message of the PC5 interface is used to notify the other UEs that are currently using the D2D link as the relay node, where the MIB-SL message carries the relay indication and identifier of the own terminal.
  • the communication unit 122 is further configured to:
  • the PC5 interface is used to notify the other UEs that currently use the D2D link that the device is a non-relay node;
  • the measuring unit 120 continues to periodically measure its own operating state.
  • the communication unit 122 is further configured to:
  • the relay discovery message carries the destination relay indication and/or the identifier of the relay node
  • At least one embodiment of the present disclosure provides a use terminal of a D2D relay node, including a communication unit 130 and a determining unit 131, where:
  • the communication unit 130 is configured to receive a notification message of another UE in the set range, where the notification message is sent by the other UE when determining that its running state meets a preset condition, where the running state is used to describe at least Describe the permissions or operating environment or processing capabilities of other UEs;
  • the determining unit 131 is configured to determine, according to the notification message, that the other UE is a relay node.
  • the relay node in the D2D discovery or D2D communication, the relay node can be quickly determined and used for data transmission, which improves the efficiency of D2D discovery or D2D communication.
  • the determining Unit 131 is specifically used to:
  • the relay deactivation indication or/and identification of the UE is carried in the UE.
  • the communication unit 130 is further configured to:
  • the relay discovery message Broadcasting a relay discovery message by using a PC5 interface, where the relay discovery message carries a destination relay indication of the remote UE and/or an identifier of a relay node; the remote UE receives another relay node for the relay After discovering the relay discovery response message returned by the message, the D2D communication establishment process is initiated to the other relay nodes.
  • the communication unit 130 is further configured to:
  • a D2D communication establishment process with the relay node is initiated by the relay node.
  • At least one embodiment of the present disclosure provides a determining terminal of a D2D relay node, including a receiving unit 140 and a processing unit 141, where:
  • the receiving unit 140 is configured to receive a relay discovery message sent by the remote UE in the set range, where the relay discovery message carries the destination relay indication and/or the identifier of the relay node;
  • the processing unit 141 is configured to send, according to the relay discovery message, a relay sending response message to the remote UE when the self-identification and the relay indication and/or the identifier of the destination relay node are successfully matched, indicating the remote
  • the UE establishes D2D communication.
  • the relay node can be quickly utilized for data transmission, thereby improving the efficiency of D2D discovery or D2D communication.
  • At least one embodiment of the present disclosure provides a use terminal of a D2D relay node, including a first communication unit 150 and a second communication unit 151, where:
  • a first communication unit 150 configured to broadcast a relay discovery message by using a PC5 interface, where the relay discovery message carries a destination relay indication of the remote UE and/or an identifier of the relay node;
  • the second communication unit 151 is configured to initiate a D2D communication establishment process to the other relay nodes after receiving the relay discovery response message returned by the other relay node for the relay discovery message.
  • the relay node can be quickly found and utilized for data transmission, thereby improving the efficiency of D2D discovery or D2D communication.
  • the first communication unit 150 is specifically configured to:
  • the relay discovery message is broadcast to other UEs currently using the D2D link through the MIB-SL message of the PC5 interface.
  • the second communication unit 151 is further configured to:
  • a D2D communication establishment process with the other relay nodes is initiated by the other relay nodes.
  • the user equipment includes:
  • the processor 1600 is configured to read a program in the memory 1620 and perform the following process:
  • Measuring the running state of the device determining that the operating state of the device is a relay node according to the measurement result, wherein the operating state is used to describe at least the authority or operating environment or processing capability of the terminal; Other UEs currently using the D2D link are notified by the transceiver 1610 to use the PC5 interface as a relay node.
  • the relay node in the D2D discovery or D2D communication, the relay node can be quickly found to perform data transmission, and the efficiency of D2D discovery or D2D communication is improved.
  • the method further includes at least one of the following:
  • the processor 1600 determines that the operating state of the device is a relay node according to the measurement result, and specifically includes at least one of the following:
  • the processor 1600 is specifically configured to:
  • the radio resource control (RRC) message of the PC5 interface is used to notify the other UEs that are currently using the D2D link to be the relay node, where the RRC message carries the relay indication and identifier of the own terminal; or
  • the MIB-SL message of the PC5 interface is used to notify the other UEs that are currently using the D2D link as the relay node, where the MIB-SL message carries the relay indication and identifier of the own terminal.
  • the processor 1600 is further configured to:
  • the PC5 interface is used to notify the other UEs that currently use the D2D link that the device is a non-relay node;
  • processor 1600 is further configured to:
  • the transceiver 1610 Receiving, by the transceiver 1610, a relay discovery message sent by the remote UE in the set range, where the relay discovery message carries the destination relay indication and/or the identifier of the relay node;
  • the transceiver 1610 is configured to receive and transmit data under the control of the processor 1600.
  • the bus architecture may include any number of interconnected buses and bridges, specifically connected by one or more processors represented by processor 1600 and various circuits of memory represented by memory 1620.
  • the bus architecture can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 1610 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1630 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the user equipment includes:
  • the processor 1700 is responsible for managing the bus architecture and general processing, and the memory 1720 can store data used by the processor 1700 in performing operations.
  • the processor 1700 is configured to read a program in the memory 1720 and perform the following process:
  • a notification message of another UE in the set range where the notification message is sent by the other UE when determining that its running state meets a preset condition, where the running state is used to describe at least the other The authority or operating environment or processing capability of the UE; determining that the other UE is a relay node based on the notification message.
  • the relay node in the D2D discovery or D2D communication, the relay node can be quickly determined and used for data transmission, which improves the efficiency of D2D discovery or D2D communication.
  • the processor 1700 when determining that the other UE is a relay node, is specifically configured to:
  • the relay indication is to indicate the relay activation state, it is determined that the any other UE is a relay node, and the notification message carries a relay activation indication or/and identifier of the UE;
  • the relay deactivation indication or/and identification of the UE is carried in the UE.
  • processor 1700 is further configured to:
  • the transceiver 1710 Broadcasting a relay discovery message by the transceiver 1710, where the relay discovery message carries a destination relay indication of the remote UE and/or an identifier of the relay node; the remote UE receives another relay node for the middle After discovering the relay discovery response message returned by the message, the D2D communication establishment process is initiated by the transceiver 1710 to the other relay nodes.
  • processor 1700 is further configured to:
  • a D2D communication establishment process with the relay node is initiated by the relay node.
  • the transceiver 1710 is configured to receive and transmit data under the control of the processor 1700.
  • the bus architecture may include any number of interconnected buses and bridges, specifically connected by one or more processors represented by processor 1700 and various circuits of memory represented by memory 1720.
  • the bus architecture can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 1710 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1730 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1700 is responsible for managing the bus architecture and general processing, and the memory 1720 can store data used by the processor 1700 in performing operations.
  • the user equipment includes:
  • the processor 1800 is responsible for managing the bus architecture and the usual processing, and the memory 1820 can be stored. The data used by the processor 1800 in performing the operations.
  • the processor 1800 is configured to read a program in the memory 1820 and perform the following processes:
  • a relay discovery message sent by the remote UE in the set range where the relay discovery message carries the destination relay indication and/or the identifier of the relay node; determining the identity of the relay according to the relay discovery message And when the relay indication and/or the identifier of the relay node of any destination is successfully matched, sending a relay sending response message to the remote UE, instructing the remote UE to establish D2D communication.
  • the relay node in the D2D discovery or D2D communication, the relay node can be quickly determined and used for data transmission, which improves the efficiency of D2D discovery or D2D communication.
  • the transceiver 1810 is configured to receive and transmit data under the control of the processor 1800.
  • the bus architecture may include any number of interconnected buses and bridges, specifically connected by one or more processors represented by processor 1800 and various circuits of memory represented by memory 1820.
  • the bus architecture can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 1810 may be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1830 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1800 is responsible for managing the bus architecture and general processing, and the memory 1820 can store data used by the processor 1800 in performing operations.
  • the user equipment includes:
  • the processor 1900 is responsible for managing the bus architecture and general processing, and the memory 1920 can store data used by the processor 1900 in performing operations.
  • the processor 1900 is configured to read a program in the memory 1920 and perform the following processes:
  • the relay discovery message is broadcasted by the transceiver 1910, where the relay discovery message carries the destination relay indication of the remote UE and/or the identifier of the relay node; and receives other relay nodes to return for the relay discovery message. After the relay discovery response message, the D2D communication establishment process is initiated to the other relay nodes.
  • the processor 1900 is specifically configured to:
  • the relay discovery message is broadcast to other UEs currently using the D2D link through the MIB-SL message of the PC5 interface.
  • processor 1900 is further configured to:
  • a D2D communication establishment process with the other relay nodes is initiated by the other relay nodes.
  • the transceiver 1910 is configured to receive and transmit data under the control of the processor 1900.
  • the bus architecture may include any number of interconnected buses and bridges, specifically connected by one or more processors represented by processor 1900 and various circuits of memory represented by memory 1920.
  • the bus architecture can also connect various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 1910 may be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1930 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1900 is responsible for managing the bus architecture and general processing, and the memory 1920 can store data used by the processor 1900 in performing operations.
  • the first UE measures the running state of the first UE; when determining that the running state of the first UE meets the preset condition according to the measurement result, determining that it is a relay node, using the PC5 interface to use the D2D currently.
  • the other UEs of the link notify themselves as the relay node, so that the relay node can be quickly found for data transmission in D2D discovery or D2D communication, and the efficiency of D2D discovery or D2D communication is improved.
  • embodiments of the present disclosure may be provided as a method, system, or computer program product.
  • the present disclosure may employ an entirely hardware embodiment, completely soft An embodiment, or a combination of software and hardware aspects.
  • the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Abstract

本申请公开了一种终端直通(D2D)中继节点的确定方法，包括：第一用户设备(UE)对自身的运行状态进行测量；根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点；并利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点。

Description

终端直通中继节点的确定、使用方法及装置
相关申请的交叉参考
本申请主张在2015年4月8日在中国提交的中国专利申请号No.201510163673.3的优先权，其全部内容通过引用包含于此。
技术领域
本公开文本涉及通信领域，尤其涉及一种终端直通(Device-to-Device，D2D)中继节点的确定、使用方法及装置。
背景技术
移动通信系统未来发展中，为了更好的满足用户需求，引入了D2D技术。该D2D技术是指邻近的终端可以在近距离范围内通过直连链路进行数据传输的方式，不需要通过中心节点(即基站)进行转发，也不需要通过传统的蜂窝链路进行用户设备(User Equipment，UE)间的信息传输。
在第三代合作伙伴项目(3rd Generation Partnership Project，3GPP)中，D2D接近服务包括D2D发现和D2D通信两大类，具体示意图如图1所示。
D2D发现是指：UE使用演进的UMTS(Universal Mobile Telecommunications System，通用移动通信系统)陆地无线接入网(Evolved UMTS Terrestrial Radio Access Network，E-UTRAN)来确认另外一个UE在其附近。例如，D2D UE可以使用该服务来寻找附近的出租车、寻找在其附近的朋友等。
D2D通信是指：将网络通信链路转化为本地的直接通信链路，节省了大量的带宽和网络效率；相互接近的UE，通过在两个UE之间直接建立链路(如图1所示)，这样原本通过网络通信链路进行通信的两个相互接近的UE，可以利用直接链路通信来获得稳定高速低廉的通信服务。接近服务通信一般是在网络侧设备控制或者辅助下进行的，eNB甚至可能会为进行接近服务通信的UE动态的分配资源。
相关技术中的D2D中继包括UE到网络中继和UE到UE中继两种方式， 其中：
如图2所示，UE到网络中继中的远程UE(Remote UE)处于脱网状态，由于远程UE不能接入到网络，UE到网络(UE-to-Network)中继节点将为远程UE提供接入到网络进行单播通信的功能，UE到网络中继节点在远程UE和网络间路由公共安全相关的业务数据(包括下行链路(Downlink，DL)/上行链路(Uplink，UL)数据)。
而UE到UE中继中的公共安全UE可以支持中继的功能，支持中继功能的公共安全UE可以在2个公共安全UE之间中转数据，图3给出了支持中继功能的公共安全UE在2个公共安全UE之间中转数据的一个示例。
公共安全UE1和公共安全UE2不邻近，公共安全UE3和公共安全UE1邻近，公共安全UE3和公共安全UE2邻近，另外公共安全UE3支持中继的功能。当公共安全UE1希望与公共安全UE2通信时，由于二者不邻近，公共安全UE3充当此次通信的中继节点，在公共安全UE1和公共安全UE2之间转发数据。
由此可知，相关技术中的的D2D发现或D2D通信机制中，通信发起方在邻近发现过程中，目前只能获得与之邻近的UE信息，并不知道哪些UE支持中继能力，无法选择合适的UE到网络中继或者UE到UE(UE-to-UE)中继节点来接入网络或进行通信，目前也没有中继节点激活中继和去激活中继功能的机制，这严重制约了D2D发现和D2D通信的数据传输效率和准确率。
发明内容
本公开文本的目的是提供一种D2D中继节点的确定、使用方法及装置，以解决相关技术中由于没有中继节点激活中继这一功能而导致的D2D发现效率低下的问题。
本公开文本的目的是通过以下技术方案实现的：
一种D2D中继节点的确定方法，包括：
第一用户设备(UE)对自身的运行状态进行测量；
所述第一UE根据测量结果确定自身的运行状态符合预设条件时，确定 自身为中继节点，其中，所述运行状态用于至少描述所述第一UE的权限或运行环境或处理能力；
所述第一UE利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点。
这样在D2D发现或D2D通信中能够快速地确定中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，所述第一UE对自身的运行状态进行测量，具体包括下列各项中的至少一项：
所述第一UE获取针对自身中继权限的网络侧鉴权结果；
所述第一UE获取当前接入网络负载量；
所述第一UE获取自身UU接口的信号质量测量值；
所述第一UE获取自身当前的业务处理能力；
所述第一UE获取自身的地理位置，
所述第一UE获取自身的运动速度；和
所述第一UE获取当前远程UE的中继需求量。
可选地，所述第一UE根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，具体包括下列各项中的至少一项：
所述第一UE确定针对自身中继权限的网络侧鉴权结果为允许使用中继权限时，确定自身为中继节点；
所述第一UE确定当前接入网络的负载量小于设定门限值时，确定自身为中继节点；
所述第一UE确定自身UU接口的信号质量测量值大于设定门限值时，确定自身为中继节点；
所述第一UE确定自身当前的业务处理能力大于设定门限值时，确定自身为中继节点；
所述第一UE确定自身位于小区边缘位置时，确定自身为中继节点；
所述第一UE确定自身的运动速度小于设定门限值时，确定自身为中继节点；和
所述第一UE确定当前远程UE的中继需求量大于设定门限值时，确定自 身为中继节点。
可选地，所述第一UE利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点，具体包括：
所述第一UE通过PC5接口的无线资源控制(Radio Resource Control，RRC)消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述RRC消息中携带所述第一UE的中继指示和标识；或，
所述第一UE通过PC5接口的UE间链路主信息块(MasterInformationBlock-SideLink，MIB-SL)消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述MIB-SL消息中携带所述第一UE的中继指示和标识。
可选地，所述第一UE利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点后，进一步包括：
所述第一UE根据测量结果确定自身的运行状态不符合预设条件时，利用所述PC5接口向当前使用D2D链路的其他UE通知自身为非中继节点；
所述第一UE继续对自身的运行状态进行周期性测量。
可选地，所述方法进一步包括：
所述第一UE接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；
所述第一UE根据所述中继发现消息确定自身标识与任一目的中继指示和/或中继节点的标识匹配成功时向所述远程UE发送中继发现响应消息，指示所述远程UE建立D2D通信
一种D2D中继节点的使用方法，包括：
远程用户设备(UE)接收设定范围内的其他UE的通知消息，所述通知消息是所述其他UE在判定自身的运行状态符合预设条件时发送的，所述运行状态用于至少描述所述其他UE的权限或运行环境或处理能力；
所述远程UE基于所述通知消息，确定所述其他UE为中继节点。
这样在D2D发现或D2D通信中能够快速地确定中继节点，并利用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，所述远程UE基于所述通知消息，确定所述其他UE为中继节点， 具体包括：
所述远程UE获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继激活指示或/和标识；
所述远程UE获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继去激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继去激活指示或/和标识。
可选地，所述方法进一步包括：
所述远程UE利用PC5接口广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；所述远程UE接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，向所述其他中继节点发起D2D通信建立过程。
可选地，所述方法进一步包括：
所述远程UE需要与另一远程UE进行D2D连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程；或，
所述远程UE需要与网络侧进行设备到网络(Device-to-Network，D2N)连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程。
一种D2D中继节点的确定方法，包括：
第一UE接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；
所述第一UE根据所述中继发现消息确定自身标识与任一目的中继节点的中继指示和/或标识匹配成功时向所述远程UE发送中继发送响应消息，指示所述远程UE建立D2D通信。
这样在D2D发现或D2D通信中能够快速地使用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
一种D2D中继节点的使用方法，包括：
远程UE利用PC5接口广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；
所述远程UE接收到其他中继节点针对所述中继发现消息返回的中继发 现响应消息后，向所述其他中继节点发起D2D通信建立过程。
这样在D2D发现或D2D通信中能够快速地发现并使用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，所述远程UE利用PC5接口广播中继发现消息，具体包括：
所述远程UE通过PC5接口的无线资源控制(RRC)消息向当前使用D2D链路的其他UE广播中继发现消息；或，
所述远程UE通过PC5接口的MIB-SL消息向当前使用D2D链路的其他UE广播中继发现消息。
可选地，所述方法进一步包括：
所述远程UE需要与另一远程UE进行D2D连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程；或，
所述远程UE需要与网络侧进行D2N连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程。
一种D2D中继节点的确定终端，包括：
测量单元，用于对自身的运行状态进行测量；
确定单元，用于根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，其中，所述运行状态用于至少描述自身终端的权限或运行环境或处理能力；
通信单元，用于利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点。
这样在D2D发现或D2D通信中能够快速地发现中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，所述测量单元对自身的运行状态进行测量时，具体包括下列各项中的至少一项：
获取针对自身中继权限的网络侧鉴权结果；
获取当前接入网络负载量；
获取自身UU接口的信号质量测量值；
获取自身当前的业务处理能力；
获取自身的地理位置，
获取自身的运动速度；和
获取当前远程UE的中继需求量。
可选地，所述确定单元根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，具体包括下列各项中的至少一项：
确定针对自身中继权限的网络侧鉴权结果为允许使用中继权限时，确定自身为中继节点；
确定当前接入网络的负载量小于设定门限值时，确定自身为中继节点；
确定自身UU接口的信号质量测量值大于设定门限值时，确定自身为中继节点；
确定自身当前的业务处理能力大于设定门限值时，确定自身为中继节点；
确定自身位于小区边缘位置时，确定自身为中继节点；
确定自身的运动速度小于设定门限值时，确定自身为中继节点；和
确定当前远程UE的中继需求量大于设定门限值时，确定自身为中继节点。
可选地，利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点时，所述通信单元具体用于：
通过PC5接口的无线资源控制(RRC)消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述RRC消息中携带自身终端的中继指示和标识；或，
通过PC5接口的MIB-SL消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述MIB-SL消息中携带自身终端的中继指示和标识。
可选地，利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点后，所述通信单元进一步用于：
根据测量结果确定自身的运行状态不符合预设条件时，利用所述PC5接口向当前使用D2D链路的其他UE通知自身为非中继节点；
所述测量单元继续对自身的运行状态进行周期性测量。
可选地，所述通信单元进一步用于：
接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；
根据所述中继发现消息确定自身标识与任一目的中继指示和/或中继节点的标识匹配成功时向所述远程UE发送中继发现响应消息，指示所述远程UE建立D2D通信
一种D2D中继节点的使用终端，包括：
通信单元，用于接收设定范围内的其他UE的通知消息，所述通知消息是所述其他UE在判定自身的运行状态符合预设条件时发送的，所述运行状态用于至少描述所述其他UE的权限或运行环境或处理能力；
确定单元，用于基于所述通知消息，确定所述其他UE为中继节点。
这样在D2D发现或D2D通信中能够快速地确定并使用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，基于所述通知消息，确定所述其他UE为中继节点时，所述确定单元具体用于：
获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继激活指示或/和标识；
获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继去激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继去激活指示或/和标识。
可选地，所述通信单元进一步用于：
利用PC5接口广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；所述远程UE接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，向所述其他中继节点发起D2D通信建立过程。
可选地，所述通信单元进一步用于：
确定需要与另一远程UE进行D2D连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程；或，
确定需要与网络侧进行D2N连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程。
一种D2D中继节点的确定终端，包括：
接收单元，用于接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；
处理单元，用于根据所述中继发现消息确定自身标识与任一目的中继节点的中继指示和/或标识匹配成功时向所述远程UE发送中继发送响应消息，指示所述远程UE建立D2D通信。
这样在D2D发现或D2D通信中能够快速地利用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
一种D2D中继节点的使用终端，包括：
第一通信单元，用于利用PC5接口广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；
第二通信单元，用于接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，向所述其他中继节点发起D2D通信建立过程。
这样在D2D发现或D2D通信中能够快速地发现并利用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，利用PC5接口广播中继发现消息时，所述第一通信单元具体用于：
通过PC5接口的无线资源控制(RRC)消息向当前使用D2D链路的其他UE广播中继发现消息；或，
通过PC5接口的MIB-SL消息向当前使用D2D链路的其他UE广播中继发现消息。
可选地，所述第二通信单元进一步用于：
确定需要与另一远程UE进行D2D连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程；或，
确定需要与网络侧进行D2N连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程。
用户设备包括：
处理器，用于读取存储器中的程序，执行下列过程：
对自身的运行状态进行测量；根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，其中，所述运行状态用于至少描述自身终 端的权限或运行环境或处理能力；通过收发机利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点。
这样在D2D发现或D2D通信中能够快速地发现中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，所述处理器对自身的运行状态进行测量时，具体包括下列各项中的至少一项：
获取针对自身中继权限的网络侧鉴权结果；
获取当前接入网络负载量；
获取自身UU接口的信号质量测量值；
获取自身当前的业务处理能力；
获取自身的地理位置，
获取自身的运动速度；和
获取当前远程UE的中继需求量。
可选地，处理器根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，具体包括下列各项中的至少一项：
确定针对自身中继权限的网络侧鉴权结果为允许使用中继权限时，确定自身为中继节点；
确定当前接入网络的负载量小于设定门限值时，确定自身为中继节点；
确定自身UU接口的信号质量测量值大于设定门限值时，确定自身为中继节点；
确定自身当前的业务处理能力大于设定门限值时，确定自身为中继节点；
确定自身位于小区边缘位置时，确定自身为中继节点；
确定自身的运动速度小于设定门限值时，确定自身为中继节点；和
确定当前远程UE的中继需求量大于设定门限值时，确定自身为中继节点。
可选地，通过收发机利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点时，处理器具体用于：
通过PC5接口的无线资源控制(RRC)消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述RRC消息中携带自身终端的中继指示和 标识；或，
通过PC5接口的MIB-SL消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述MIB-SL消息中携带自身终端的中继指示和标识。
可选地，利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点后，处理器进一步用于：
根据测量结果确定自身的运行状态不符合预设条件时，利用所述PC5接口向当前使用D2D链路的其他UE通知自身为非中继节点；
继续对自身的运行状态进行周期性测量。
可选地，处理器进一步用于：
通过收发机接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；
根据所述中继发现消息确定自身标识与任一目的中继指示和/或中继节点的标识匹配成功时通过收发机向所述远程UE发送中继发现响应消息，指示所述远程UE建立D2D通信
收发机，用于在处理器的控制下接收和发送数据。
其中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器代表的一个或多个处理器和存储器代表的存储器的各种电路连接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
用户设备包括：
处理器负责管理总线架构和通常的处理，存储器可以存储处理器在执行操作时所使用的数据。
处理器，用于读取存储器中的程序，执行下列过程：
通过收发机接收设定范围内的其他UE的通知消息，所述通知消息是所述其他UE在判定自身的运行状态符合预设条件时发送的，所述运行状态用 于至少描述所述其他UE的权限或运行环境或处理能力；基于通知消息，确定所述其他UE为中继节点。
这样在D2D发现或D2D通信中能够快速地确定并使用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，基于所述通知消息，确定所述其他UE为中继节点时，所述处理器具体用于：
获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继激活指示或/和标识；
获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继去激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继去激活指示或/和标识。
可选地，处理器进一步用于：
通过收发机广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；所述远程UE接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，通过收发机向所述其他中继节点发起D2D通信建立过程。
可选地，处理器进一步用于：
确定需要与另一远程UE进行D2D连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程；或，
确定需要与网络侧进行D2N连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程。
收发机，用于在处理器的控制下接收和发送数据。
其中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器代表的一个或多个处理器和存储器代表的存储器的各种电路连接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户 接口还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器负责管理总线架构和通常的处理，存储器可以存储处理器在执行操作时所使用的数据。
用户设备包括：
处理器负责管理总线架构和通常的处理，存储器可以存储处理器在执行操作时所使用的数据。
处理器，用于读取存储器中的程序，执行下列过程：
通过收发机接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；根据所述中继发现消息确定自身标识与任一目的中继节点的中继指示和/或标识匹配成功时向所述远程UE发送中继发送响应消息，指示所述远程UE建立D2D通信。
这样在D2D发现或D2D通信中能够快速地确定并使用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
收发机，用于在处理器的控制下接收和发送数据。
其中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器代表的一个或多个处理器和存储器代表的存储器的各种电路连接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器负责管理总线架构和通常的处理，存储器可以存储处理器在执行操作时所使用的数据。
用户设备包括：
处理器负责管理总线架构和通常的处理，存储器可以存储处理器在执行操作时所使用的数据。
处理器，用于读取存储器中的程序，执行下列过程：
通过收发机广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，向所述其他中继节点发起D2D通信建立过程。
这样在D2D发现或D2D通信中能够快速地发现并利用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，通过收发机广播中继发现消息时，处理器具体用于：
通过PC5接口的无线资源控制(RRC)消息向当前使用D2D链路的其他UE广播中继发现消息；或，
通过PC5接口的MIB-SL消息向当前使用D2D链路的其他UE广播中继发现消息。
可选地，处理器进一步用于：
确定需要与另一远程UE进行D2D连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程；或，
确定需要与网络侧进行D2N连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程。
收发机，用于在处理器的控制下接收和发送数据。
其中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器代表的一个或多个处理器和存储器代表的存储器的各种电路连接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器负责管理总线架构和通常的处理，存储器可以存储处理器在执行操作时所使用的数据。
附图说明
图1为相关技术中的D2D发现和D2D通信示意图；
图2为相关技术中的UE到网络中继中通过中继节点传输数据示例图；
图3为相关技术中的互不邻近的公共安全UE之间通过中继节点传输数据示例图；
图4A和图4B为相关技术中的D2D直接发现机制中两种发送模式示意图；
图5为本公开文本至少一个实施例中D2D中继节点的确定方法流程示意图；
图6A为PC5接口控制面协议栈示意图；
图6B为本公开文本至少一个实施例中D2D中继节点的去激活过程示意图；
图7为本公开文本至少一个实施例中D2D中继节点的使用方法流程示意图；
图8和图11为本公开文本实施例中D2D直接发现机制中两种发送模式示意图；
图9为本公开文本至少一个实施例中D2D中继节点的确定方法流程示意图；
图10为本公开文本至少一个实施例中D2D中继节点的使用方法流程示意图；
图12为本公开文本至少一个实施例中D2D中继节点的确定终端结构示意图；
图13为本公开文本至少一个实施例中D2D中继节点的使用终端结构示意图；
图14为本公开文本至少一个实施例中D2D中继节点的确定终端结构示意图；
图15为本公开文本至少一个实施例中D2D中继节点的使用终端结构示意图；
图16为本公开文本至少一个实施例中D2D中继节点的确定终端结构示意图；
图17为本公开文本至少一个实施例中D2D中继节点的使用终端结构示意图；
图18为本公开文本至少一个实施例中D2D中继节点的确定终端结构示意图；以及
图19为本公开文本至少一个实施例中D2D中继节点的确定终端结构示意图。
具体实施方式
下面将结合本公开文本实施例中的附图，对本公开文本实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开文本一部分实施例，并不是全部的实施例。基于本公开文本中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开文本保护的范围。
在D2D通信机制中，对于远程UE，如果为了让其可以和网络进行通信，可以为远程UE选择一个邻近的在网UE为其中转数据，这种场景称为UE到网络中继。该场景下，远程UE需要首先找到可用的UE到网络中继节点。由于目前没有相关的解决方案，本公开文本实施例中提供一种基于无线接入网络(Radio Access Network，RAN)的机制，UE到网络中继节点可以动态地激活/去激活中继功能，使远程UE能找到合适的UE到网络中继节点，该方案同样适用于UE到UE中继场景，用于远程UE找到合适的UE到UE中继节点以和另一远程UE通信。
为了便于描述，可以定义两种链路类型：
D2D链路是指：设备和设备之间直接进行通信的链路；
D2N链路是指：设备和网络节点之间进行通信的链路。
此外，参与D2D发现/通信的UE分为两种角色：
D2D发送UE是指：发送D2D发现或D2D通信消息的UE；
D2D接收UE是指：接收D2D发送UE发送的发现或D2D通信消息的UE。
由于目前3GPP给出了两种D2D发现机制分别为：直接发现和核心网络层(EPC-Level)发现，本公开文本实施例中的D2D发现方法利用的是第一种 D2D发现机制，即发送UE直接在空口发送D2D发现信号，邻近的接收UE根据空口接收到的D2D发现信号直接进行D2D发现，该过程只涉及UE和UE间的PC5接口，有两种发送模式：模式(Model)A(“I am here”)，可参阅图4A所示，以及Model B(“Who is there”/“are you there”)，可参阅图4B所示。
基于Model A模式，参阅图5所示，本公开文本至少一个实施例中提供一种D2D中继节点的确定方法，具体流程如下：
步骤500：第一UE对自身的运行状态进行测量。
具体地，第一UE对自身的运行状态进行测量，具体包括下列各项中的至少一项：
第一UE获取针对自身中继权限的网络侧鉴权结果；
第一UE获取当前接入网络负载量；
第一UE获取自身UU接口的信号质量测量值；
第一UE获取自身当前的业务处理能力；
第一UE获取自身的地理位置，
第一UE获取自身的运动速度，和
第一UE获取当前远程UE的中继需求量。
步骤501：第一UE根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，其中，该运行状态用于至少描述该第一UE的权限或运行环境或处理能力。
具体地，第一UE根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，具体包括下列各项中的至少一项：
第一UE确定针对自身中继权限的网络侧鉴权结果为允许使用中继权限时，确定自身为中继节点；
第一UE确定当前接入网络的负载量小于设定门限值时，确定自身为中继节点；
第一UE确定自身UU接口的信号质量测量值大于设定门限值时，确定自身为中继节点；
第一UE确定自身当前的业务处理能力大于设定门限值时，确定自身为中 继节点；
第一UE确定自身位于小区边缘位置时，确定自身为中继节点；
第一UE确定自身的运动速度小于设定门限值时，确定自身为中继节点；和
第一UE确定当前远程UE的中继需求量大于设定门限值时，确定自身为中继节点。
步骤502：第一UE利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点。
具体地，第一UE利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点，具体包括以下两种情形：
第一种情形为：第一UE通过PC5接口的无线资源控制(Radio Resource Control，RRC)消息向当前使用D2D链路的其他UE通知自身为中继节点，其中该RRC消息中携带该第一UE的中继指示和标识。
例如第一UE根据接入网络时的网络鉴权结果、网络负载情况、自身业务处理能力，UU接口的信号质量，UE的地理位置等因素确定自身为中继节点，决定激活中继功能时可以定义PC5接口新的RRC消息中，携带中继指示(Relay indication)，中继标识(Relay ID)信息，中继指示置为“1”时表示中继激活状态。
第二种情形为：第一UE通过PC5接口的MIB-SL消息向当前使用D2D链路的其他UE通知自身为中继节点，其中该MIB-SL消息中携带该第一UE的中继指示和标识。
其中，PC5接口上的控制面协议栈如图6A所示，具体包含RRC层，无线链路控制(Radio Link Control RLC)层，媒体接入控制(Medium Access Control，MAC)层和物理层(Physical layer，PHY)，本公开文本实施例中UE之间的数据交互应用在RRC层上，这样使得UE之间的数据传输更加快速可靠。
例如第一UE根据接入网络时的网络鉴权结果、网络负载情况、自身业务处理能力，UU接口的信号质量，UE的地理位置等因素确定自身为中继节点，决定激活中继功能时可利用相关技术中的PC5接口MIB-SL消息中的预留比特 位(reserved bits)实现，携带中继指示(Relay indication)，中继标识(Relay ID)信息，中继指示可以设置为布尔(Boolen)值，置为“1”时表示激活。
进一步地，在第一UE利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点后，若第一UE根据测量结果确定自身的运行状态不符合预设条件时，该PC5接口向当前使用D2D链路的其他UE通知自身为非中继节点，需要说明的是第一UE在完成去激活中继功能后，第一UE需要继续对自身的运行状态进行周期性测量。
例如，中继节点根据接入网络时网络负载情况、自身业务处理能力，UU接口的信号质量，UE的地理位置等因素决定去激活中继功能。比如网络负载情况不能接纳新的业务需求；或者该中继下的远程UE的个数达到限制；或者UU接口的信号质量较差；或者UE位于小区中间位置时；或者UE运动速度过快，中继根据上述因素判断，决定去激活自己的中继功能，广播中继能力信息。这时中继可以定义PC5接口新的RRC消息中，携带中继指示，中继ID信息。或者利用相关技术中的PC5接口MIB-SL消息中的保留位实现。中继指示可以设置为布尔值，置为“0”时表示去激活，具体可参阅图6B所示，具体格式如下所示：
Figure PCTCN2016076079-appb-000001
远程节点接收到该信息后，可以选择其他中继节点接入。
进一步地，第一UE接收设定范围内的远程UE发送的中继发现消息，该 中继发现消息中携带目的中继节点的中继指示和/或中继节点的标识；第一UE根据该发现消息确定自身标识与任一目的中继节点的标识匹配成功时向该远程UE发送中继发现响应消息，指示该远程UE建立D2D通信。
参阅图7所示，本公开文本至少一个实施例中提供一种D2D中继节点的使用方法，具体流程如下：
步骤700：远程UE接收设定范围内的其他UE的通知消息，该通知消息是该其他UE在判定自身的运行状态符合预设条件时发送的，该运行状态用于至少描述该其他UE的权限或运行环境或处理能力；
步骤701：上述远程UE基于上述通知消息，确定其他UE为中继节点。
具体地，远程UE基于该通知消息，确定该其他UE为中继节点，具体过称为：远程UE获取任一其他UE的通知消息，确定该任一其他UE的通知消息中携带的中继指示为表示中继激活状态时，确定该任一其他UE为中继节点，该通知消息中携带有UE的中继指示和/或标识；或远程UE获取任一其他UE的通知消息，确定该任一其他UE的通知消息中携带的中继指示为表示中继去激活状态时，确定该任一其他UE为中继节点，该通知消息中携带有UE的中继去激活指示或/和标识。
进一步地，远程UE利用PC5接口广播中继发现消息，该中继发现消息中携带该远程UE的目的中继指示和/或中继节点的标识；该远程UE接收到其他中继节点针对该中继发现消息返回的中继发现响应消息，向该其他中继节点发起D2D或D2N通信建立过程
更进一步地，远程UE需要与另一远程UE进行D2D连接时，通过该中继节点发起与该中继节点的D2D通信建立过程；或，远程UE需要与网络侧进行D2N连接时，通过该中继节点发起与该中继节点的D2D通信建立过程。
基于上述技术方法，UE到网络中继或者UE到UE中继节点激活中继功能，模式A(“I am here”)可参阅图8所示。
中继节点根据接入网络时的网络鉴权结果、网络负载情况、自身业务处理能力，UU接口的信号质量，UE的地理位置等因素决定激活中继功能。
例如某一UE的网络鉴权结果为真(true)；或者网络负载情况较好，可以接纳业务请求时；或者发起中继请求的远程UE的个数没有达到限制；或者 UU接口的信号质量较好；或者UE位于小区边缘位置时，该UE根据上述因素判断，确定自身为中继节点，决定激活自己的中继功能，广播中继能力信息。可以定义PC5接口新的RRC消息中，携带中继指示，中继ID信息。或者利用相关技术中的PC5接口MIB-SL消息中的保留位实现。中继指示可以设置为布尔值，置为“1”时表示激活，具体格式如下所示。
Figure PCTCN2016076079-appb-000002
远程UE会接收邻近中继节点发送的MIB-SL消息或者新的RRC消息，根据其中携带的内容判断该D2D UE是否具有中继能力，如果该D2D UE具有中继能力，远程UE将向中继节点发起后续的通信建立过程，比如一对一通信建立过程，IP地址分配过程。
基于Model B模式，参阅图9所示，本公开文本至少一个实施例中提供一种D2D中继节点的确定方法，具体流程如下：
步骤900：第一UE接收设定范围内的远程UE发送的中继发现消息，该中继发现消息中携带目的中继指示和/或中继节点的标识；
步骤901：第一UE根据该中继发现消息确定自身标识与任一目的中继节点的中继指示和/或标识匹配成功时向该远程UE发送中继发现响应消息，指示该远程UE建立D2D通信。
参阅图10所示，本公开文本至少一个实施例中提供一种D2D中继节点的使用方法，具体流程如下：
步骤100：远程UE利用PC5接口广播中继发现消息，该中继发现消息中 携带该远程UE的目的中继指示和/或中继节点的标识；
步骤101：远程UE接收到其他中继节点针对该中继发现消息返回的中继发现响应消息，向该其他中继节点发起D2D通信建立过程。
具体地，远程UE利用PC5接口广播中继发现消息，具体包括以下两种情形：
该远程UE通过PC5接口的无线资源控制RRC消息向当前使用D2D链路的其他UE广播中继发现消息；或，
该远程UE通过PC5接口的MIB-SL消息向当前使用D2D链路的其他UE广播中继发现消息。
进一步地，该远程UE需要与另一远程UE进行D2D连接时，通过上述其他中继节点发起与该其他中继节点的D2D通信建立过程；或，该远程UE需要与网络侧进行D2N连接时，通过上述其他中继节点发起与该其他中继节点的D2D通信建立过程。
基于上述技术方法，UE到网络中继或者UE到UE中继节点激活中继功能，模式B式(“Who is there”/“are you there”)可参阅图11所示。
步骤1：远程UE在PC5接口新的RRC消息或MIB-SL消息中广播中继发现消息，该中继发现消息可以携带该远程UE感兴趣的中继指示信息或者中继ID信息。
步骤2：中继节点会接收邻近的远程UE发送的D2D中继发现消息，根据该信息中携带的内容判断是否需要向远程UE广播中继发现消息响应。
例如，某一远程UE假设为UE1广播的中继发现消息中携带有该远程UE感兴趣的中继指示(“1”)和多个中继ID信息，某一中继节点假设为UE2接收到该中继发现消息，将自身的ID与中继发现消息中携带的多个中继ID进行匹配，若匹配成功，则向UE1发送中继发现消息响应；若一远程UE假设为UE3广播的中继发现消息中仅携带有该远程UE感兴趣的中继指示(“1”)，某一中继节点假设为UE2接收到该中继发现消息后，该UE2向UE1发送中继发现消息响应。
进一步地，如果远程UE收到中继UE发送的响应消息后，将向中继节点发起后续的通信建立过程，比如一对一通信建立过程，IP地址分配过程。
基于上述实施例，参阅图12所示，本公开文本至少一个实施例中提供一种D2D中继节点的确定终端，包括测量单元120，确定单元121和通信单元122，其中：
测量单元120，用于对自身的运行状态进行测量；
确定单元121，用于根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，其中，所述运行状态用于至少描述自身终端的权限或运行环境或处理能力；
通信单元122，用于利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点。
这样在D2D发现或D2D通信中能够快速地发现中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，所述测量单元120对自身的运行状态进行测量时，具体包括下列各项中的至少一项：
获取针对自身中继权限的网络侧鉴权结果；
获取当前接入网络负载量；
获取自身UU接口的信号质量测量值；
获取自身当前的业务处理能力；
获取自身的地理位置，
获取自身的运动速度；和
获取当前远程UE的中继需求量。
可选地，所述确定单元121根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，具体包括下列各项中的至少一项：
确定针对自身中继权限的网络侧鉴权结果为允许使用中继权限时，确定自身为中继节点；
确定当前接入网络的负载量小于设定门限值时，确定自身为中继节点；
确定自身UU接口的信号质量测量值大于设定门限值时，确定自身为中继节点；
确定自身当前的业务处理能力大于设定门限值时，确定自身为中继节点；
确定自身位于小区边缘位置时，确定自身为中继节点；
确定自身的运动速度小于设定门限值时，确定自身为中继节点；和
确定当前远程UE的中继需求量大于设定门限值时，确定自身为中继节点。
可选地，利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点时，所述通信单元122具体用于：
通过PC5接口的无线资源控制RRC消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述RRC消息中携带自身终端的中继指示和标识；或，
通过PC5接口的MIB-SL消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述MIB-SL消息中携带自身终端的中继指示和标识。
可选地，利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点后，所述通信单元122进一步用于：
根据测量结果确定自身的运行状态不符合预设条件时，利用所述PC5接口向当前使用D2D链路的其他UE通知自身为非中继节点；
所述测量单元120继续对自身的运行状态进行周期性测量。
可选地，所述通信单元122进一步用于：
接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；
根据所述中继发现消息确定自身标识与任一目的中继指示和/或中继节点的标识匹配成功时向所述远程UE发送中继发现响应消息，指示所述远程UE建立D2D通信
基于上述实施例，参阅图13所示，本公开文本至少一个实施例中提供一种D2D中继节点的使用终端，包括通信单元130和确定单元131，其中：
通信单元130，用于接收设定范围内的其他UE的通知消息，所述通知消息是所述其他UE在判定自身的运行状态符合预设条件时发送的，所述运行状态用于至少描述所述其他UE的权限或运行环境或处理能力；
确定单元131，用于基于所述通知消息，确定所述其他UE为中继节点。
这样在D2D发现或D2D通信中能够快速地确定并使用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，基于所述通知消息，确定所述其他UE为中继节点时，所述确定 单元131具体用于：
获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继激活指示或/和标识；
获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继去激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继去激活指示或/和标识。
可选地，所述通信单元130进一步用于：
利用PC5接口广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；所述远程UE接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，向所述其他中继节点发起D2D通信建立过程。
可选地，所述通信单元130进一步用于：
确定需要与另一远程UE进行D2D连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程；或，
确定需要与网络侧进行D2N连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程。
基于上述实施例，参阅图14所示，本公开文本至少一个实施例中提供一种D2D中继节点的确定终端，包括接收单元140和处理单元141，其中：
接收单元140，用于接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；
处理单元141，用于根据所述中继发现消息确定自身标识与任一目的中继节点的中继指示和/或标识匹配成功时向所述远程UE发送中继发送响应消息，指示所述远程UE建立D2D通信。
这样在D2D发现或D2D通信中能够快速地利用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
基于上述实施例，参阅图15所示，本公开文本至少一个实施例中提供一种D2D中继节点的使用终端，包括第一通信单元150和第二通信单元151，其中：
第一通信单元150，用于利用PC5接口广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；
第二通信单元151，用于接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，向所述其他中继节点发起D2D通信建立过程。
这样在D2D发现或D2D通信中能够快速地发现并利用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，利用PC5接口广播中继发现消息时，所述第一通信单元150具体用于：
通过PC5接口的无线资源控制RRC消息向当前使用D2D链路的其他UE广播中继发现消息；或，
通过PC5接口的MIB-SL消息向当前使用D2D链路的其他UE广播中继发现消息。
可选地，所述第二通信单元151进一步用于：
确定需要与另一远程UE进行D2D连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程；或，
确定需要与网络侧进行D2N连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程。
基于上述实施例，参阅图16所示，本公开文本至少一个实施例中，用户设备包括：
处理器1600，用于读取存储器1620中的程序，执行下列过程：
对自身的运行状态进行测量；根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，其中，所述运行状态用于至少描述自身终端的权限或运行环境或处理能力；通过收发机1610利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点。
这样在D2D发现或D2D通信中能够快速地发现中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，所述处理器1600对自身的运行状态进行测量时，具体包括下列各项中的至少一项：
获取针对自身中继权限的网络侧鉴权结果；
获取当前接入网络负载量；
获取自身UU接口的信号质量测量值；
获取自身当前的业务处理能力；
获取自身的地理位置，
获取自身的运动速度；和
获取当前远程UE的中继需求量。
可选地，处理器1600根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，具体包括下列各项中的至少一项：
确定针对自身中继权限的网络侧鉴权结果为允许使用中继权限时，确定自身为中继节点；
确定当前接入网络的负载量小于设定门限值时，确定自身为中继节点；
确定自身UU接口的信号质量测量值大于设定门限值时，确定自身为中继节点；
确定自身当前的业务处理能力大于设定门限值时，确定自身为中继节点；
确定自身位于小区边缘位置时，确定自身为中继节点；
确定自身的运动速度小于设定门限值时，确定自身为中继节点；和
确定当前远程UE的中继需求量大于设定门限值时，确定自身为中继节点。
可选地，通过收发机1610利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点时，处理器1600具体用于：
通过PC5接口的无线资源控制(RRC)消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述RRC消息中携带自身终端的中继指示和标识；或，
通过PC5接口的MIB-SL消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述MIB-SL消息中携带自身终端的中继指示和标识。
可选地，利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点后，处理器1600进一步用于：
根据测量结果确定自身的运行状态不符合预设条件时，利用所述PC5接口向当前使用D2D链路的其他UE通知自身为非中继节点；
继续对自身的运行状态进行周期性测量。
可选地，处理器1600进一步用于：
通过收发机1610接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；
根据所述中继发现消息确定自身标识与任一目的中继指示和/或中继节点的标识匹配成功时通过收发机1610向所述远程UE发送中继发现响应消息，指示所述远程UE建立D2D通信
收发机1610，用于在处理器1600的控制下接收和发送数据。
其中，在图16中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1600代表的一个或多个处理器和存储器1620代表的存储器的各种电路连接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1610可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口1630还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
基于上述实施例，参阅图17所示，本公开文本至少一个实施例中，用户设备包括：
处理器1700负责管理总线架构和通常的处理，存储器1720可以存储处理器1700在执行操作时所使用的数据。
处理器1700，用于读取存储器1720中的程序，执行下列过程：
通过收发机1710接收设定范围内的其他UE的通知消息，所述通知消息是所述其他UE在判定自身的运行状态符合预设条件时发送的，所述运行状态用于至少描述所述其他UE的权限或运行环境或处理能力；基于通知消息，确定所述其他UE为中继节点。
这样在D2D发现或D2D通信中能够快速地确定并使用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
可选地，基于所述通知消息，确定所述其他UE为中继节点时，所述处理器1700具体用于：
获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带 的中继指示为表示中继激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继激活指示或/和标识；
获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继去激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继去激活指示或/和标识。
可选地，处理器1700进一步用于：
通过收发机1710广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；所述远程UE接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，通过收发机1710向所述其他中继节点发起D2D通信建立过程。
可选地，处理器1700进一步用于：
确定需要与另一远程UE进行D2D连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程；或，
确定需要与网络侧进行D2N连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程。
收发机1710，用于在处理器1700的控制下接收和发送数据。
其中，在图17中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1700代表的一个或多个处理器和存储器1720代表的存储器的各种电路连接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1710可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口1730还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1700负责管理总线架构和通常的处理，存储器1720可以存储处理器1700在执行操作时所使用的数据。
基于上述实施例，参阅图18所示，本公开文本至少一个实施例中，用户设备包括：
处理器1800负责管理总线架构和通常的处理，存储器1820可以存储处 理器1800在执行操作时所使用的数据。
处理器1800，用于读取存储器1820中的程序，执行下列过程：
通过收发机1810接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；根据所述中继发现消息确定自身标识与任一目的中继节点的中继指示和/或标识匹配成功时向所述远程UE发送中继发送响应消息，指示所述远程UE建立D2D通信。
这样在D2D发现或D2D通信中能够快速地确定并使用中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
收发机1810，用于在处理器1800的控制下接收和发送数据。
其中，在图18中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1800代表的一个或多个处理器和存储器1820代表的存储器的各种电路连接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1810可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口1830还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1800负责管理总线架构和通常的处理，存储器1820可以存储处理器1800在执行操作时所使用的数据。
基于上述实施例，参阅图19所示，本公开文本至少一个实施例中，用户设备包括：
处理器1900负责管理总线架构和通常的处理，存储器1920可以存储处理器1900在执行操作时所使用的数据。
处理器1900，用于读取存储器1920中的程序，执行下列过程：
通过收发机1910广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，向所述其他中继节点发起D2D通信建立过程。
这样在D2D发现或D2D通信中能够快速地发现并利用中继节点来进行数 据传输，提高了D2D发现或D2D通信的效率。
可选地，通过收发机1910广播中继发现消息时，处理器1900具体用于：
通过PC5接口的无线资源控制RRC消息向当前使用D2D链路的其他UE广播中继发现消息；或，
通过PC5接口的MIB-SL消息向当前使用D2D链路的其他UE广播中继发现消息。
可选地，处理器1900进一步用于：
确定需要与另一远程UE进行D2D连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程；或，
确定需要与网络侧进行D2N连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程。
收发机1910，用于在处理器1900的控制下接收和发送数据。
其中，在图19中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1900代表的一个或多个处理器和存储器1920代表的存储器的各种电路连接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路之类的各种其他电路连接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机1910可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口1930还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1900负责管理总线架构和通常的处理，存储器1920可以存储处理器1900在执行操作时所使用的数据。
综上所述，本公开文本实施例中第一UE对自身的运行状态进行测量；根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点，这样在D2D发现或D2D通信中能够快速地发现中继节点来进行数据传输，提高了D2D发现或D2D通信的效率。
本领域技术人员能够理解的是，本公开文本的实施例可提供为方法、系统、或计算机程序产品。因此，本公开文本可采用完全硬件实施例、完全软 件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开文本可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本公开文本是参照根据本公开文本实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本公开文本的可选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本公开文本范围的所有变更和修改。
显然，本领域的技术人员可以对本公开文本实施例进行各种改动和变型而不脱离本公开文本实施例的精神和范围。这样，倘若本公开文本实施例的这些修改和变型属于本公开文本权利要求及其等同技术的范围之内，则本公开文本也意图包含这些改动和变型在内。

Claims (32)

  1. 一种终端直通(D2D)中继节点的确定方法，包括：
    第一用户设备(UE)对自身的运行状态进行测量；
    所述第一UE根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，其中，所述运行状态用于至少描述所述第一UE的权限或运行环境或处理能力；以及
    所述第一UE利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点。
  2. 如权利要求1所述的方法，其中，所述第一UE对自身的运行状态进行测量，具体包括下列各项中的至少一项：
    所述第一UE获取针对自身中继权限的网络侧鉴权结果；
    所述第一UE获取当前接入网络负载量；
    所述第一UE获取自身UU接口的信号质量测量值；
    所述第一UE获取自身当前的业务处理能力；
    所述第一UE获取自身的地理位置；
    所述第一UE获取自身的运动速度；和
    所述第一UE获取当前远程UE的中继需求量。
  3. 如权利要求1所述的方法，其中，所述第一UE根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，具体包括下列各项中的至少一项：
    所述第一UE确定针对自身中继权限的网络侧鉴权结果为允许使用中继权限时，确定自身为中继节点；
    所述第一UE确定当前接入网络的负载量小于设定门限值时，确定自身为中继节点；
    所述第一UE确定自身UU接口的信号质量测量值大于设定门限值时，确定自身为中继节点；
    所述第一UE确定自身当前的业务处理能力大于设定门限值时，确定自身为中继节点；
    所述第一UE确定自身位于小区边缘位置时，确定自身为中继节点；
    所述第一UE确定自身的运动速度小于设定门限值时，确定自身为中继节点；和
    所述第一UE确定当前远程UE的中继需求量大于设定门限值时，确定自身为中继节点。
  4. 如权利要求1、2或3所述的方法，其中，所述第一UE利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点，具体包括：
    所述第一UE通过PC5接口的无线资源控制(RRC)消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述RRC消息中携带所述第一UE的中继指示和标识；或，
    所述第一UE通过PC5接口的UE间链路主信息块(MIB-SL)消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述MIB-SL消息中携带所述第一UE的中继指示和标识。
  5. 如权利要求1、2、或3所述的方法，其中，所述第一UE利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点后，进一步包括：
    所述第一UE根据测量结果确定自身的运行状态不符合预设条件时，利用所述PC5接口向当前使用D2D链路的其他UE通知自身为非中继节点；以及
    所述第一UE继续对自身的运行状态进行周期性测量。
  6. 如权利要求1所述的方法，进一步包括：
    所述第一UE接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；以及
    所述第一UE根据所述中继发现消息确定自身标识与任一目的中继指示和/或中继节点的标识匹配成功时向所述远程UE发送中继发现响应消息，指示所述远程UE建立D2D通信。
  7. 一种终端直通(D2D)中继节点的使用方法，包括：
    远程用户设备(UE)接收设定范围内的其他UE的通知消息，所述通知消息是所述其他UE在判定自身的运行状态符合预设条件时发送的，所述运行状态用于至少描述所述其他UE的权限或运行环境或处理能力；以及
    所述远程UE基于所述通知消息，确定所述其他UE为中继节点。
  8. 如权利要求7所述的方法，其中，所述远程UE基于所述通知消息，确定所述其他UE为中继节点，具体包括：
    所述远程UE获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继激活指示或/和标识；以及
    所述远程UE获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继去激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继去激活指示或/和标识。
  9. 如权利要求7所述的方法，进一步包括：
    所述远程UE利用PC5接口广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；所述远程UE接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，向所述其他中继节点发起D2D通信建立过程。
  10. 如权利要求7、8或9所述的方法，进一步包括：
    所述远程UE需要与另一远程UE进行D2D连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程；或，
    所述远程UE需要与网络侧进行D2N连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程。
  11. 一种终端直通(D2D)中继节点的确定方法，包括：
    第一用户设备(UE)接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；以及
    所述第一UE根据所述中继发现消息确定自身标识与任一目的中继节点的中继指示和/或标识匹配成功时向所述远程UE发送中继发送响应消息，指示所述远程UE建立D2D通信。
  12. 一种终端直通(D2D)中继节点的使用方法，包括：
    远程用户设备(UE)利用PC5接口广播中继发现消息，所述中继发现消息中携带所述远程UE的目的中继指示和/或中继节点的标识；以及
    所述远程UE接收到其他中继节点针对所述中继发现消息返回的中继发 现响应消息后，向所述其他中继节点发起D2D通信建立过程。
  13. 如权利要求12所述的方法，其中，所述远程UE利用PC5接口广播中继发现消息，具体包括：
    所述远程UE通过PC5接口的无线资源控制(RRC)消息向当前使用D2D链路的其他UE广播中继发现消息；或，
    所述远程UE通过PC5接口的UE间链路主信息块(MIB-SL)消息向当前使用D2D链路的其他UE广播中继发现消息。
  14. 如权利要求12或13所述的方法，进一步包括：
    所述远程UE需要与另一远程UE进行D2D连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程；或，
    所述远程UE需要与网络侧进行D2N连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程。
  15. 一种终端直通(D2D)中继节点的确定终端，包括：
    测量单元，用于对自身的运行状态进行测量；
    确定单元，用于根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，其中，所述运行状态用于至少描述自身终端的权限或运行环境或处理能力；以及
    通信单元，用于利用PC5接口向当前使用D2D链路的其他用户设备(UE)通知自身为中继节点。
  16. 如权利要求15所述的终端，其中，所述测量单元对自身的运行状态进行测量时，具体包括下列各项中的至少一项：
    获取针对自身中继权限的网络侧鉴权结果；
    获取当前接入网络负载量；
    获取自身UU接口的信号质量测量值；
    获取自身当前的业务处理能力；
    获取自身的地理位置；
    获取自身的运动速度；和
    获取当前远程UE的中继需求量。
  17. 如权利要求15所述的终端，其中，所述确定单元根据测量结果确定 自身的运行状态符合预设条件时，确定自身为中继节点，具体包括下列各项中的至少一项：
    确定针对自身中继权限的网络侧鉴权结果为允许使用中继权限时，确定自身为中继节点；
    确定当前接入网络的负载量小于设定门限值时，确定自身为中继节点；
    确定自身UU接口的信号质量测量值大于设定门限值时，确定自身为中继节点；
    确定自身当前的业务处理能力大于设定门限值时，确定自身为中继节点；
    确定自身位于小区边缘位置时，确定自身为中继节点；
    确定自身的运动速度小于设定门限值时，确定自身为中继节点；和
    确定当前远程UE的中继需求量大于设定门限值时，确定自身为中继节点。
  18. 如权利要求15、16或17所述的终端，其中，利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点时，所述通信单元具体用于：
    通过PC5接口的无线资源控制(RRC)消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述RRC消息中携带自身终端的中继指示和标识；或，
    通过PC5接口的UE间链路主信息块(MIB-SL)消息向当前使用D2D链路的其他UE通知自身为中继节点，其中所述MIB-SL消息中携带自身终端的中继指示和标识。
  19. 如权利要求15、16、或17所述的终端，其中，利用PC5接口向当前使用D2D链路的其他UE通知自身为中继节点后，所述通信单元进一步用于：
    根据测量结果确定自身的运行状态不符合预设条件时，利用所述PC5接口向当前使用D2D链路的其他UE通知自身为非中继节点；以及
    所述测量单元继续对自身的运行状态进行周期性测量。
  20. 如权利要求15所述的终端，其中，所述通信单元进一步用于：
    接收设定范围内的远程UE发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；以及
    根据所述中继发现消息确定自身标识与任一目的中继指示和/或中继节点的标识匹配成功时向所述远程UE发送中继发现响应消息，指示所述远程UE建立D2D通信。
  21. 一种终端直通(D2D)中继节点的使用终端，包括：
    通信单元，用于接收设定范围内的其他用户设备(UE)的通知消息，所述通知消息是所述其他UE在判定自身的运行状态符合预设条件时发送的，所述运行状态用于至少描述所述其他UE的权限或运行环境或处理能力；以及
    确定单元，用于基于所述通知消息，确定所述其他UE为中继节点。
  22. 如权利要求21所述的终端，其中，基于所述通知消息，确定所述其他UE为中继节点时，所述确定单元具体用于：
    获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继激活指示或/和标识；以及
    获取任一其他UE的通知消息，确定所述任一其他UE的通知消息中携带的中继指示为表示中继去激活状态时，确定所述任一其他UE为中继节点，所述通知消息中携带有UE的中继去激活指示或/和标识。
  23. 如权利要求21所述的终端，其中，所述通信单元进一步用于：
    利用PC5接口广播中继发现消息，所述中继发现消息中携带远程UE的目的中继指示和/或中继节点的标识；所述远程UE接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，向所述其他中继节点发起D2D通信建立过程。
  24. 如权利要求21、22或23所述的终端，其中，所述通信单元进一步用于：
    确定需要与另一远程UE进行D2D连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程；或，
    确定需要与网络侧进行D2N连接时，通过所述中继节点发起与所述中继节点的D2D通信建立过程。
  25. 一种终端直通(D2D)中继节点的确定终端，包括：
    接收单元，用于接收设定范围内的远程用户设备(UE)发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；以及
    处理单元，用于根据所述中继发现消息确定自身标识与任一目的中继节点的中继指示和/或标识匹配成功时向所述远程UE发送中继发送响应消息，指示所述远程UE建立D2D通信。
  26. 一种终端直通(D2D)中继节点的使用终端，包括：
    第一通信单元，用于利用PC5接口广播中继发现消息，所述中继发现消息中携带所述远程用户设备(UE)的目的中继指示和/或中继节点的标识；以及
    第二通信单元，用于在接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，向所述其他中继节点发起D2D通信建立过程。
  27. 如权利要求26所述的终端，其中，利用PC5接口广播中继发现消息时，所述第一通信单元具体用于：
    通过PC5接口的无线资源控制(RRC)消息向当前使用D2D链路的其他UE广播中继发现消息；或，
    通过PC5接口的UE间链路主信息块(MIB-SL)消息向当前使用D2D链路的其他UE广播中继发现消息。
  28. 如权利要求26或27所述的终端，其中，所述第二通信单元进一步用于：
    确定需要与另一远程UE进行D2D连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程；或，
    确定需要与网络侧进行D2N连接时，通过所述其他中继节点发起与所述其他中继节点的D2D通信建立过程。
  29. 一种终端直通(D2D)中继节点的确定终端，包括：处理器、存储器和收发机，其中：
    处理器，用于读取存储器中的程序，执行下列过程：
    对自身的运行状态进行测量；
    根据测量结果确定自身的运行状态符合预设条件时，确定自身为中继节点，其中，所述运行状态用于至少描述自身终端的权限或运行环境或处 理能力；以及
    通过收发机利用PC5接口向当前使用D2D链路的其他用户设备(UE)通知自身为中继节点，
    收发机用于接收和发送数据，
    处理器负责管理总线架构和通常的处理，存储器能够存储处理器在执行操作时所使用的数据。
  30. 一种终端直通(D2D)中继节点的使用终端，包括：处理器、存储器和收发机，其中：
    处理器，用于读取存储器中的程序，执行下列过程：
    通过收发机接收设定范围内的其他用户设备(UE)的通知消息，所述通知消息是所述其他UE在判定自身的运行状态符合预设条件时发送的，所述运行状态用于至少描述所述其他UE的权限或运行环境或处理能力；以及
    基于所述通知消息，确定所述其他UE为中继节点，
    收发机用于接收和发送数据，
    处理器负责管理总线架构和通常的处理，存储器能够存储处理器在执行操作时所使用的数据。
  31. 一种终端直通(D2D)中继节点的确定终端，包括：处理器、存储器和收发机，其中：
    处理器，用于读取存储器中的程序，执行下列过程：
    通过收发机接收设定范围内的远程用户设备(UE)发送的中继发现消息，所述中继发现消息中携带目的中继指示和/或中继节点的标识；以及
    根据所述中继发现消息确定自身标识与任一目的中继节点的中继指示和/或标识匹配成功时向所述远程UE发送中继发送响应消息，指示所述远程UE建立D2D通信，
    收发机用于接收和发送数据，
    处理器负责管理总线架构和通常的处理，存储器能够存储处理器在执行操作时所使用的数据。
  32. 一种终端直通(D2D)中继节点的使用终端，包括：处理器、存储 器和收发机，其中：
    处理器，用于读取存储器中的程序，执行下列过程：
    通过收发机利用PC5接口广播中继发现消息，所述中继发现消息中携带所述远程用户设备(UE)的目的中继指示和/或中继节点的标识；以及
    在通过收发机接收到其他中继节点针对所述中继发现消息返回的中继发现响应消息后，向所述其他中继节点发起D2D通信建立过程，
    收发机用于接收和发送数据，
    处理器负责管理总线架构和通常的处理，存储器能够存储处理器在执行操作时所使用的数据。
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CN106162511B (zh) 2020-01-24
US10420009B2 (en) 2019-09-17
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