WO2016150107A1 - 一种设备直通***中继状态确定方法及装置 - Google Patents

一种设备直通***中继状态确定方法及装置 Download PDF

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Publication number
WO2016150107A1
WO2016150107A1 PCT/CN2015/088986 CN2015088986W WO2016150107A1 WO 2016150107 A1 WO2016150107 A1 WO 2016150107A1 CN 2015088986 W CN2015088986 W CN 2015088986W WO 2016150107 A1 WO2016150107 A1 WO 2016150107A1
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WO
WIPO (PCT)
Prior art keywords
relay
remote
information
discovery
state
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PCT/CN2015/088986
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English (en)
French (fr)
Inventor
陈琳
李大鹏
黄莹
罗薇
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中兴通讯股份有限公司
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Publication of WO2016150107A1 publication Critical patent/WO2016150107A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to, but is not limited to, the field of wireless communication technology.
  • D2D technology can reduce the burden of cellular networks, reduce the battery power consumption of user equipment, increase the data rate, and improve the robustness of the network infrastructure, which satisfies the requirements of the above high data rate services and proximity services.
  • D2D technology is also called Proximity Services (ProSe), and one-side link (Sidelink, SL).
  • D2D technology can work in licensed or unlicensed bands, allowing multiple D2D-enabled user equipment (D2D User Equipment, D2D UE) to directly discover without network infrastructure or network infrastructure. And / or direct communication.
  • D2D User Equipment D2D User Equipment
  • UE1 and UE2 perform data interaction under the coverage of the cellular network, and the user plane data does not pass through the network infrastructure, as shown in scenario 1 of FIG. 1;
  • the UE 4 with poor signal quality is allowed to communicate with the network through the UE3 with network coverage nearby, which can help the operator to expand coverage, Increase capacity;
  • the D2D technology generally includes a D2D discovery technology and a D2D communication technology, where the D2D discovery technology refers to a technology for determining or determining whether a first user equipment is adjacent to a second user equipment.
  • D2D user equipment can discover each other by transmitting or receiving a discovery signal (discovery information);
  • D2D communication technology refers to a technology in which some or all communication data between D2D user equipments can directly communicate without going through a network infrastructure.
  • the UE3 can communicate with the existing LTE mode on the network side, and can also serve as a relay and coverage (out of The coverage (UE4 in the illustration) communicates using D2D mode, including D2D Discovery and/or D2D communication. If the terminal UE4 that is out of coverage or has a poor signal transmits data to the base station through the terminal UE3 in the coverage, we call UE4 a remote user (Remote UE) and UE3 as a relay user (Relay UE).
  • Remote UE remote user
  • Relay UE relay user
  • UE6 may forward data packets between UE5 and UE7, UE6 may be referred to as a relay user, and UE5 and UE7 may be referred to as remote users.
  • the related art does not provide a system perfect solution for the scenario 2 and scenario 3 relay transmission mode relay state mechanisms.
  • This paper provides a method and apparatus for determining a relay state of a device through system.
  • a method for determining a relay state of a device through system includes:
  • the relay user equipment UE acquires the relay configuration information and/or the receiving device to the device D2D information, and determines the relay state of the relay UE according to the relay configuration information and/or the D2D information.
  • the relaying UE acquires the relay configuration information, including:
  • the relay UE receives the relay configuration information sent by the base station or sent by the short-range service function, or the relay UE acquires the pre-configured relay configuration information;
  • the relay configuration information includes at least one of the following: a relay discovery resource or a resource pool letter Information, relay communication resource or resource pool information, activation indication of relay function, deactivation indication of relay function, relay power saving enable indication, relay power saving prohibition indication, relay active state timer, remote UE activity status timer.
  • the relay discovery resource or resource pool information includes: a relay discovery transmission resource or a resource pool, and a relay discovery reception resource pool; the relay communication resource or resource pool information includes: a relay communication transmission resource or Resource pool, relay communication receives resource pool.
  • the relay discovery transmission resource or the resource pool includes at least one of the following: an overlay D2D discovery transmission resource or a resource pool, and an uncovered D2D discovery transmission resource pool;
  • the relay discovery reception resource pool includes: The D2D discovery receiving resource pool and the uncovered D2D discovery receiving resource pool are included; wherein: the coverage D2D discovery receiving resource pool includes a D2D discovery sending resource pool of the relay UE serving cell, and the neighboring area of the relay UE serving cell D2D discovery sends a resource pool.
  • the relay configuration information further includes one or more of the following: a relay first state listening period, a listening frame offset, a listening subframe offset, and a monitoring duration.
  • the relaying UE determines, according to the relay configuration information, a relay state of the relaying UE, including:
  • the relay configuration information includes: a relay function activation indication, and the relay UE performs a relay function; or
  • the relay configuration information includes: a relay function deactivation indication, and the relay UE no longer performs a relay function; or
  • the relay configuration information includes: a relay power saving enable indication, where the relay UE enters a relay first state according to the relay configuration information; or
  • the relay configuration information includes: a relay power saving prohibition indication, and the relay UE enters a relay second state according to the relay configuration information.
  • the relaying UE determines, according to the relay configuration information and/or the D2D information, a relay state of the relaying UE, including:
  • the relay UE After receiving the D2D information of the discovery relay sent by the remote UE, the relay UE interacts with the remote UE, and after establishing a connection with the remote UE, enters the relay second state.
  • the relay UE after receiving the D2D information of the discovery relay sent by the remote UE, the relay UE interacts with the remote UE, and after establishing a connection with the remote UE, enters the relay second state.
  • the relay UE After receiving the D2D information of the discovery relay sent by the remote UE, the relay UE sends the discovery relay response D2D information to the remote UE, and after receiving the relay connection establishment request sent by the remote UE, Sending relay connection establishment information to the remote UE, where the relay UE enters a relay second state.
  • the relay UE determines, according to the relay configuration information and the D2D information, the relay status of the relay UE, including:
  • the relay UE starts the relay active state timer when entering the relay second state, and when the relay active state timer expires, the relay UE enters the relay first state.
  • the method further includes:
  • the relay UE restarts the relay active state timer when any one of the following events occurs:
  • the relay UE determines, according to the relay configuration information and the D2D information, the relay status of the relay UE, including:
  • the relay UE sets and starts a corresponding active state timer for the remote UE
  • the relay UE When the active state timer of the remote UE expires, the relay UE releases the connection with the remote UE; or when the active state timer of the remote UE expires, the relay UE Transmitting, by the remote UE, D2D information or paging information of the remote UE, if the response information sent by the remote UE is not received within a predetermined time, the relay UE releases the remote terminal UE connection;
  • the relay UE When the relay UE receives the connection release request information sent by the remote UE that has been accessed, the active state timer corresponding to the remote UE is stopped, and the connection with the remote UE is released;
  • the relay UE enters a relay first state after releasing the connection of all the accessed remote UEs.
  • the method further includes:
  • the relaying UE restarts an active state timer corresponding to the remote UE when any one of the following events occurs:
  • the method further includes: the relay UE in the relay first state performs one of the following operations:
  • the method further includes: the relay UE in the relay second state performs one or more of the following operations:
  • the method further includes: after receiving the relay broadcast information sent by the relay UE in the relayed second state, the remote UE that has not accessed the relay UE selects a relay UE, and selects The relay UE sends a relay connection establishment request, and after receiving the relay connection establishment request, the relay UE sends the relay connection establishment information to the remote UE.
  • the method further includes: The relay UE reports the relay status of the relay UE to the base station.
  • a device pass-through system relay state determining device is located at the relay user equipment UE, and includes an information acquiring module and a state determining module, where:
  • the information acquiring module is configured to: acquire relay configuration information and/or receive device to device D2D information;
  • the state determining module is configured to: determine a relay state of the relay UE according to the relay configuration information and/or the D2D information.
  • the information acquiring module is configured to: receive the relay configuration information sent by the base station or sent by the short-range service function, or the information acquiring module acquires the relay configuration information pre-configured by the relay UE.
  • the state determining module determines, according to the relay configuration information, a relay state of the relaying UE, including:
  • the relay configuration information includes: a relay function activation indication, and the status determination module is configured to: perform a relay function; or
  • the relay configuration information includes: a relay function deactivation indication, the status determination module is configured to: no longer perform a relay function; or
  • the relay configuration information includes: a relay power saving enable indication, where the state determining module is configured to: enter a relay first state according to the relay configuration information; or
  • the relay configuration information includes: a relay power saving prohibition indication, and the state determining module is configured to: enter a relay second state according to the relay configuration information.
  • the state determining module is configured to:
  • the remote UE After receiving the D2D information of the discovery relay sent by the remote UE, interacting with the remote UE, and after the relay UE establishes a connection with the remote UE, determining that the relay UE enters the relay Two states.
  • the state determination module is configured to:
  • the terminal UE After receiving the D2D information of the discovery relay sent by the remote UE, sending the discovery relay response D2D information to the remote UE, and after receiving the relay connection establishment request sent by the remote UE, The terminal UE sends the relay connection establishment information, and determines that the relay UE enters the relay second state.
  • the state determination module is configured to:
  • the relay active state timer is started when the relay UE enters the relay second state, and when the relay active state timer expires, determining that the relay UE enters the relay first state.
  • the state determining module is further configured to: after starting the relay active state timer, determine that the relay active state timer is restarted if any one of the following events occurs:
  • the state determination module is configured to:
  • the remote UE accesses the relay UE, setting and starting a corresponding active state timer for the remote UE; when the active state timer of the remote UE expires, notifying the relay UE to release a connection with the remote UE; or when the active state timer of the remote UE expires, sending D2D information or paging information of the remote UE to the remote UE, if received within a predetermined time Notifying the relay UE to release the connection with the remote UE; and receiving the connection release request information sent by the accessed remote UE, stopping the An activity status timer corresponding to the remote UE, notifying the relay UE to release the connection with the remote UE; and determining, after the relay UE releases the connection of all the accessed remote UEs, determining the relay The UE enters the relay first state.
  • the state determining module is further configured to: after setting and starting the corresponding active state timer for the remote UE, determining, if any one of the following events occurs, restarting the activity corresponding to the remote UE Status timer:
  • the state determining module determines that the relay state of the relay UE is a relay first state
  • the device further includes a first module configured to: perform one of the following operations:
  • the state determining module determines that the relay state of the relay UE is a relay second state
  • the device further includes a second module, configured to: perform one or more of the following operations:
  • the second module is further configured to: after receiving the relay connection establishment request sent by the remote UE that has not accessed the relay UE, send the relay connection establishment information to the remote UE.
  • the device further includes a reporting module, configured to: after the state determining module determines the relay state of the relaying UE, report the relay state of the relay UE to the base station.
  • a reporting module configured to: after the state determining module determines the relay state of the relaying UE, report the relay state of the relay UE to the base station.
  • a computer readable storage medium storing computer executable instructions for performing the method of any of the above.
  • the UE with the relay capability can enter the second state of the relay when there is no remote user access, and enter the relay first after receiving the request of the remote user for the relay.
  • Status, periodic broadcast relay information in this way, the relay UE relay state is switched, and the relay UE can achieve the purpose of power saving when it is in the relay second state.
  • FIG. 1 Schematic diagram of device direct/system discovery/communication
  • FIG. 2 is a schematic diagram of a method for determining a relay state of a device through-system according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of a device for determining a relay state of a device through-system according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic diagram of a relay state transition of a device through-system according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of an application example 3 relaying UE entering a relay active state from a relay inactive state;
  • FIG. 8 is a flowchart of an application example 4 relaying UE entering a relay active state from a relay inactive state;
  • FIG. 10 is a flowchart of an application example 6 relaying a UE from a relay active state to a relay inactive state;
  • 11 is a flow chart of an application example 7 relaying a UE from a relay active state to a relay inactive state.
  • This embodiment describes a method for determining a relay state of a device through-through system, as shown in FIG. 2, including:
  • Step 10 The relay UE acquires the relay configuration information and/or the receiving device to the device D2D information;
  • the relay UE receives the base station transmission or the ProSe function entity
  • the relay configuration information sent, or the relay UE acquires the pre-configured relay configuration information
  • the relay configuration information includes at least one of the following: a relay discovery resource or resource pool information, a relay communication resource or resource pool information, an activation indication of a relay function, a deactivation indication of a relay function, and a relay power saving Enable indication, relay power saving prohibition indication, relay active status timer, remote UE active status timer.
  • the relay discovery resource or resource pool information includes: a relay discovery transmission resource or a resource pool, and a relay discovery reception resource pool; the relay communication resource or resource pool information includes: a relay communication transmission resource or a resource pool The relay communication receives the resource pool.
  • the relay discovery transmission resource or resource pool includes at least one of the following: an overlay D2D discovery transmission resource or a resource pool, and an overlayless D2D discovery transmission resource pool;
  • the relay discovery reception resource pool includes: coverage D2D discovery reception a resource pool, and a non-overlay D2D discovery receiving resource pool; wherein: the D2D discovery receiving resource pool covering the D2D discovery receiving resource pool includes a D2D discovery sending resource pool of the relay UE serving cell, and the D2D discovery sending resource corresponding to the neighboring area of the relay UE serving cell Pool.
  • the relay configuration information further includes one or more of the following: a relay first state listening period, a listening frame offset, a listening subframe offset, and a monitoring duration.
  • Step 20 Determine a relay state of the relay UE according to the relay configuration information and/or the D2D information.
  • the relay UE reports to the base station that the UE is performing the relay function and/or the relay UE. Following the state.
  • the application determines the relay status of the relay UE according to the relay configuration information, including the following situations:
  • the relay UE performs a relay function
  • the relay UE does not perform a relay function
  • the relaying UE performing the relay function enters the relay first state according to the relay configuration information;
  • the relay UE performing the relay function enters the relay second state according to the relay configuration information.
  • the relay function activation and deactivation indication in the relay configuration information can be indicated by display or implicitly. If the RRC field in the RRC message or the MAC CE is used to explicitly indicate or the UE obtains the relay configuration information, that is, the implicit indication activates the relay function, if the reconfiguration information received by the UE does not include the relay configuration information. , implicitly indicates to deactivate the relay function.
  • the application is an application for the relay UE to enter the relay second state from the relay first state according to the relay configuration information and/or the D2D information, including one of the following situations:
  • the relay UE directly enters the relay second state after receiving the D2D information of the discovery relay sent by the remote UE;
  • the relay UE after receiving the D2D information of the discovery relay sent by the remote UE, the relay UE interacts with the remote UE, and after establishing a connection with the remote UE, enters the relay second state.
  • the relay UE After receiving the D2D information of the discovery relay sent by the remote UE, the relay UE sends the discovery relay response D2D information to the remote UE, and receives the relay connection established by the remote UE. After the request, the relay connection establishment information is sent to the remote UE, and the relay UE enters the relay second state.
  • the application is an application for the relay UE to enter the relay first state from the relay second state according to the relay configuration information and the D2D information, including one of the following situations:
  • the relay UE starts the relay active state timer when entering the relay second state, and when the relay active state timer expires, the relay UE enters the relay first state.
  • the relay UE restarts the relay active state timer: receiving any accessed access a D2D communication information sent by the remote UE to the relay UE; receiving D2D discovery information sent by any remote UE that has been accessed; and the relay UE is directed to any remote UE that has been accessed Send D2D communication information.
  • the relay UE when the remote UE accesses, the relay UE sets and starts a corresponding active state timer for the remote UE; when the active state timer of the remote UE expires, the relay The UE releases the connection with the remote UE; the relay UE may also send the D2D information or the paging information of the remote UE to the remote UE when the active state timer of the remote UE expires, if Receiving the response information sent by the remote UE in the predetermined time, the relay UE releases the connection with the remote UE; and when the relay UE receives the connection release request sent by the accessed remote UE And stopping the active state timer corresponding to the remote UE, releasing the connection with the remote UE; and the relaying UE enters the relay first state after releasing the connection of all the accessed remote UEs .
  • the relay UE restarts the active state timing corresponding to the remote UE.
  • receiving D2D communication information sent by the remote UE to the relay UE receiving D2D discovery information sent by the remote UE; and sending, by the relay UE, D2D communication information to the remote UE.
  • the relay UE in the first state of the relay performs one of the following operations:
  • the remote UE After receiving the D2D information of the discovery relay sent by the remote UE, sending the discovery relay response D2D information to the remote UE; after receiving the relay connection establishment request sent by the remote UE, The remote UE sends relay connection establishment information.
  • the relay UE in the relay second state performs one or more of the following operations:
  • the remote UE that has not accessed the relay UE receives the relay UE that is in the second state of the relay. After the relay broadcast information is sent, a relay UE is selected, and a relay connection establishment request is sent to the selected relay UE, and after receiving the relay connection establishment request, the relay UE sends the relay connection establishment request to the remote UE. Relay connection establishment information.
  • This embodiment describes a device through-system relay state determining device, which is located in the relay user equipment UE, as shown in FIG. 3, and includes an information acquiring module 31 and a state determining module 32, where:
  • the information obtaining module 31 is configured to: acquire relay configuration information and/or receive device to device D2D information;
  • the information acquiring module 31 receives the relay configuration information sent by the base station or the ProSe function, or the information acquiring module 31 acquires the relay configuration information pre-configured by the relay UE.
  • the state determining module 32 is configured to determine a relay state of the relay UE according to the relay configuration information and/or the D2D information.
  • the status determining module 32 determines the relay status of the relay UE according to the relay configuration information, including the following situations:
  • the relay UE performs a relay function
  • the relay UE does not perform a relay function
  • the relaying UE performing the relay function enters the relay first state according to the relay configuration information;
  • the relay UE performing the relay function enters the relay second state according to the relay configuration information.
  • the relay function activation and deactivation indication in the relay configuration information can be indicated by display or implicitly. If the RRC field in the RRC message or the MAC CE is used to explicitly indicate or the UE obtains the relay configuration information, that is, the implicit indication activates the relay function, if the reconfiguration information received by the UE does not include the relay configuration information. , implicitly indicates to deactivate the relay function.
  • the status determining module 32 determines, according to the D2D information, that the relay UE enters the relay second state from the relay first state:
  • the state determining module 32 determines that the relay UE enters the relay second state after receiving the D2D information of the discovery relay sent by the remote UE.
  • the state determining module 32 interacts with the remote UE, and after the relay UE establishes a connection with the remote UE, determines The relay UE enters a relay second state.
  • the state determining module 32 After receiving the D2D information of the discovery relay sent by the remote UE, the state determining module 32 sends the discovery relay response D2D information to the remote UE, and receives the relay connection sent by the remote UE. After the request is established, the relay connection establishment information is sent to the remote UE, and the relay UE is determined to enter the relay second state.
  • the status determining module 32 determines, according to the relay configuration information and the D2D information, that the relay UE enters the relay first state from the relay second state:
  • the state determining module 32 starts the relay active state timer when the relay UE enters the relay second state, and determines the relay UE when the relay active state timer expires. Enter the first state of the relay.
  • the state determining module 32 is further configured to: after starting the relay active state timer, determine to restart the relay active state timing if any one of the following events occurs Receive: receiving D2D communication information sent by any remote UE that has been accessed to the relay UE; receiving D2D discovery information sent by any remote UE that has been accessed; the relay UE is connected Any one of the incoming remote UEs transmits D2D communication information.
  • the state determining module 32 sets and starts a corresponding active state timer for the remote UE when the remote UE accesses the relay UE; when the active state timer of the remote UE exceeds Notifying the relay UE to release the connection with the remote UE; the relay UE may also send the D2D information of the remote UE to the remote UE when the active state timer of the remote UE expires Is the paging information, if the response information sent by the remote UE is not received within the predetermined time, the relay UE releases the connection with the remote UE; when the state determining module 32 receives the accessed Stopping the connection release request information sent by the remote UE, stopping the active state timer corresponding to the remote UE, notifying the relay UE to release the connection with the remote UE; releasing all connected in the relay UE After the connection of the incoming remote UE, the state determining module 32 determines that the relay UE enters the relay first state.
  • the state determining module 32 is further configured to: after setting and starting the corresponding active state timer for the remote UE, determining, if any one of the following events occurs, restarting the corresponding remote UE Active state timer: receiving D2D communication information sent by the remote UE to the relay UE; receiving D2D discovery information sent by the remote UE; and sending, by the relay UE, D2D communication information to the remote UE .
  • the state determining module 32 determines that the relay state of the relay UE is a relay first state
  • the apparatus further includes a first module, configured to: perform one of the following operations:
  • the first module After the first module receives the D2D information of the discovery relay sent by the remote UE, the first module sends the discovery relay response D2D information to the remote UE; the first module receives the sent by the remote UE. After the relay connection establishment request, the relay connection establishment information is sent to the remote UE.
  • the state determining module 32 determines that the relay state of the relay UE is a relay second state
  • the device further includes a second module, configured to: perform one or more of the following operations Kind:
  • the second module is further configured to: after receiving the relay connection establishment request sent by the remote UE that has not accessed the relay UE, send the relay connection establishment information to the remote UE.
  • the apparatus further includes a reporting module, configured to report the relay status of the relay UE to the base station after the status determining module 32 determines the relay status of the relay UE.
  • the relay first state is referred to as a relay inactive state
  • the relay second state is referred to as a relay active state.
  • the relay-capable UE can enter the inactive state when there is no remote user access. After receiving the D2D information of the discovery relay sent by the remote user, the UE enters the relay active state and periodically broadcasts the relay information. Thereby, the purpose of relaying the UE power saving can be achieved.
  • the relay UE can be in two states: a relay active state and a relay inactive state. As shown in FIG. 4, when there is no remote UE around, the relay UE enters a relay inactive state. In the relay inactive state, the relay UE wakes up only periodically and monitors whether the relay finds the received resource.
  • the D2D information of the discovery relay sent by the remote UE (for example, looking for a relay request message), if any, the relay UE sends the discovery relay response D2D information to the remote UE.
  • the relay UE waits for the connection establishment request sent by the remote UE, if the message is received, the relay UE sends a connection establishment message to the remote end. The UE, thereby establishing a connection with the remote UE.
  • the relay UE enters the relay active state.
  • the relay UE may also enter the relay active state immediately after receiving the D2D information that the remote UE sends the discovery relay.
  • the relay UE can periodically broadcast the relay information while forwarding the data packet of the remote UE, and wait for more remote UEs to access the message after hearing the message.
  • the relay UE may maintain a relay active state timer, when the relay UE forwards the data packet for the remote UE or receives the access request sent by the remote UE or the remote UE that has accessed the relay UE.
  • the timer is restarted. If the timer expires, the relay UE considers that the accessed remote UE is in an inactive state. Therefore, the relay UE may initiate release of the connection with the remote UE, and enter the medium. Following the inactive state.
  • the relay UE may also set an active state timer for each accessed remote UE, each time receiving a data packet or a discovery message from the remote UE, or sending a data packet to the remote UE.
  • the active state timer corresponding to the remote UE is restarted.
  • the relay UE releases the context of the locally saved remote UE.
  • the relaying UE may also send the D2D information or the paging information of the remote UE to the remote UE when the active state timer of the remote UE expires, if the remote UE does not receive the received message within the predetermined time. In response to the message, the relay UE releases the connection with the remote UE.
  • the relay UE may also receive the connection release information sent by the remote UE. After receiving the message, the relay UE resets the active state timer corresponding to the remote UE, and releases the context of the remote UE.
  • the relay UE may go to a low-priority remote UE that can be preempted by the resource. Proactively requesting a message to release the connection.
  • the relay UE releases the PC5 connection of all the remote UEs, the relay UE returns to the relay inactive state, and does not periodically send the relay message and listen to the relay data receiving resource. At this time, only the periodic monitoring is performed. Whether there is D2D information of the discovery relay sent by the remote UE.
  • the relay power saving method and related signaling procedures are given below through application examples.
  • UE1 is in network coverage and UE2 is in network coverage.
  • This example describes a base station (eNB) configuring a relay node to make The process of saving electricity.
  • the UE1 in the network coverage is interested in becoming a relay node, and provides a relay service for the UE without coverage.
  • UE1 is interested in becoming a UE-to-network relay. As shown in Figure 5, the following steps are included:
  • Step 501 The UE1 may send the D2D relay information to the base station, where the indication of the interest of the relay and the current location information of the UE are included.
  • Step 502 The base station receives the D2D relay information sent by the UE1 and selects the UE1 as the relay node, and the base station sends the relay configuration information to the UE1.
  • the UE-to-network relay (UE to network relay) configuration is established. information;
  • the relay configuration information may include one or more of the following information: a relay discovery resource or resource pool information, a relay communication resource or resource pool information, an activation indication of a relay function, and a deactivation indication of the relay function, Following the power saving enable indication, the relay power saving prohibition indication, the relay active state timer, the remote UE active state timer, and the like.
  • the relay configuration information includes at least an activation indication of the relay function and a relay power saving enable indication.
  • the relay communication resource or resource pool information is used to relay communication between the UE and the remote UE, including relay communication transmission resource or resource pool information, and relay communication reception resource pool information.
  • the relay discovery resource or resource pool information is used to relay the UE to discover the remote UE, including the relay discovery transmission resource or resource pool information, and the relay discovery reception resource pool information.
  • the relay discovery transmission resource or the resource pool information includes the coverage D2D discovery transmission resource or the resource pool information, and/or the uncovered D2D discovery transmission resource pool information, and the relay discovery reception resource pool information includes the coverage D2D discovery reception resource. Pool information and uncovered D2D discovery receive resource pool information.
  • the D2D discovery receiving resource pool information includes a D2D discovery transmission resource of a relay UE service or a camping cell, and a D2D discovery transmission resource corresponding to a neighboring cell of the relay UE service or the camping cell.
  • the UE 1 may also receive the relay resource pool configuration information from the base station broadcast message.
  • the UE1 may also receive relay configuration information received from the ProSe function (a short-range service function, a network element entity for D2D configuration, authorization authentication, located in the core network) or UE1 pre-configured relay configuration information.
  • ProSe function a short-range service function, a network element entity for D2D configuration, authorization authentication, located in the core network
  • Step 503 After receiving the relay configuration information of the activated relay function, the UE1 starts the relay function, and if the configuration information indicates that the relay power saving is enabled, the UE1 enters the relay inactive state.
  • UE1 and UE2 are within D2D communication range of each other, UE2 and UE3 are within D2D communication range of each other, and UE1 and UE3 are not within D2D communication range of each other.
  • This example describes the flow of a base station configuring a relay node to enable power saving. Assume that the base station configures UE2 to be a UE-to-UE relay. As shown in FIG. 6, the method includes the following steps:
  • Step 601 The base station sends the relay configuration information to the UE2.
  • the UE-to-UE relay (UE to UE relay) configuration information is configured.
  • the relay configuration information may include one or more of the following information: a relay discovery resource or resource pool information, a relay communication resource or resource pool information, an activation indication of a relay function, and a deactivation indication of the relay function, Following the power saving enable indication, the relay power saving prohibition indication, the relay active state timer, the remote UE active state timer, and the like.
  • the relay configuration information includes at least an activation indication of the relay function and a relay power saving prohibition indication.
  • the relay communication resource or resource pool information is used to relay communication between the UE and the remote UE, including relay communication transmission resource or resource pool information, and relay communication reception resource pool information.
  • the relay discovery resource or resource pool information is used to relay the discovery of the UE and the remote UE, including the relay discovery transmission resource or resource pool, and the relay discovery reception resource pool information.
  • the relay discovery transmission resource or resource pool information includes coverage D2D discovery transmission resource or resource pool information, and/or no coverage D2D discovery transmission resource pool information
  • the relay discovery reception resource pool information includes coverage D2D discovery reception resource pool information. And no coverage D2D discovery receiving resource pool information.
  • the D2D discovery receiving resource pool including the D2D discovery receiving resource pool information includes a D2D discovery sending resource pool of the relay UE serving cell (or the camping cell) and a D2D discovery sending resource pool corresponding to the neighboring area of the relay UE serving cell.
  • the UE 2 may also receive relay resource pool configuration information from the base station broadcast message.
  • UE2 may also receive relay configuration information received from the ProSe function or UE2 pre-configured relay configuration information.
  • Step 602 After receiving the relay configuration information, the UE2 enters a relay active state if the configuration information indicates that the relay function is activated and the relay power saving is prohibited.
  • UE1 is in network coverage and UE2 is in network coverage.
  • This example describes the flow of a relay UE entering a relay active state from a relay inactive state.
  • UE1 in network coverage is interested in becoming a relay node, providing relay services for uncovered UEs. Assuming that the base station selects UE1 as a relay node, as shown in FIG. 7, the following steps are included:
  • Step 701 The base station sends the device direct relay configuration information to the UE1. After the UE1 receives the relay configuration information, if the configuration information indicates that the relay function is activated and the relay power saving is enabled, the UE1 performs the relay function and enters the relay non- Active status;
  • Step 702 The relay UE1 monitors the remote UE to send the D2D information of the discovery relay on the relay discovery receiving resource pool.
  • the relay UE1 detects the D2D discovery information sent by the remote UE on the receiving resource pool according to the relay inactive state listening period, the monitoring frame and/or the subframe offset, the monitoring duration, and the like. On the subframe corresponding to the non-relay discovery receiving resource pool, UE1 does not need to listen to the corresponding subframe.
  • Step 703 The remote UE2 sends the D2D information of the discovery relay.
  • the remote UE2 in the uncovered state wants to find the relay UE to connect to the network transmission information, and the UE2 first listens to the relay discovery reception resource pool, and determines whether there is D2D relay broadcast information sent by the relay UE in the vicinity. If the relay broadcast information sent by the relay UE can be received, the remote UE2 selects one relay UE and sends a relay connection establishment request to the selected relay UE. It is assumed that the UE2 does not receive the relay broadcast information sent by the relay UE at this time, and the remote UE2 sends the D2D information of the discovery relay.
  • the D2D information of the discovery relay sent by the remote UE2 may include part or all of the following: a discovery relay indication, an identifier of the remote UE, a type of the remote UE, a relay type sought by the remote UE, and a remote UE.
  • Step 704 the relay UE1 receives the D2D information that the remote UE2 sends the discovery relay, and roots According to the content of the message, it is determined that the UE2 is looking for a relay UE, and the UE1 enters a relay active state;
  • Step 705 The relay UE1 uses the relay to discover the transmission resource or randomly sends the resource from the relay discovery transmission resource pool to send the relay response D2D information to the remote UE2.
  • the relay response D2D information may include part or all of the following content: a relay identifier, a relay type, a relay service cell identifier, a relay available time period, a relay belonging group identifier, a relay mobile status indication, a relay PLMN information, Relay prohibition status indication, etc.
  • step 706 the UE2 receives the relay response D2D information sent by the relay UE1, and the UE2 sends a relay connection establishment request to the relay UE1, and the relay UE1 receives the relay connection establishment request sent by the remote UE2, and the relay UE1 sends the relay connection request.
  • the remote UE2 sends the relay connection establishment information, and the UE2 accesses the relay UE1.
  • the UE2 If the UE2 receives the relay response D2D information sent by the multiple relay UEs at the same time, the UE2 selects one relay UE and sends a relay connection establishment request to the selected relay UE.
  • the relay UE1 can receive the D2D communication information sent by the UE2 on the relay communication receiving resource pool, and use the relay communication to send the resource or randomly send the resource pool from the relay communication to send the resource to the remote UE2. D2D communication information.
  • the relay UE1 may also receive D2D discovery information sent by the accessed UE, connection establishment request information sent by other remote UEs that have not been accessed, and D2D information of the discovery relay UE.
  • the D2D discovery information that is sent by the remote UE that has accessed the relay UE1 includes some or all of the following information: the remote UE identifier, the type of the remote UE, and the far-end UE. Communication group identification, etc.
  • the content of the D2D information for the remote UE that is looking for the relay UE to transmit the discovery relay is as described in step 703.
  • the UE1 in the relay active state may use the relay to discover the transmission resource or periodically send the relay broadcast information from the relay discovery transmission resource pool to randomly select the resource.
  • the relay broadcast information may include a relay identifier, a relay type, a relay service cell identifier, a relay available period, a relay belonging group identifier, a relay mobile status indication, a relay PLMN information, a relay prohibition status indication, and the like.
  • UE1 is in network coverage Cover status, while UE2 is in no network coverage.
  • This example describes another flow in which a relay UE enters a relay active state from a relay inactive state.
  • UE1 in network coverage is interested in becoming a relay node, providing relay services for uncovered UEs. As shown in Figure 8, the following steps are included:
  • Step 801 The base station selects the UE1 as the relay node, and the base station sends the device direct relay configuration information to the UE1. After the UE1 receives the relay configuration information, if the configuration information indicates that the relay power saving is enabled, the UE1 enters the relay inactive. status;
  • Step 802 The relay UE1 receives, on the relay discovery and receiving resource pool, the D2D information that the remote UE sends the discovery relay.
  • the relay UE1 may further detect, according to the relay configuration information, the relay inactive state monitoring period, the monitoring frame/subframe offset, the monitoring duration, and the like, and the remote monitoring UE sends the discovery relay D2D on the receiving resource pool. information.
  • Step 803 The remote UE2 sends the D2D information of the discovery relay.
  • the UE2 in the no-coverage state wants to find the relay UE to connect to the network transmission information, and the UE2 first listens to the relay discovery reception resource pool, and determines whether there is D2D relay broadcast information sent by the relay UE in the vicinity. If the D2D relay broadcast information sent by the relay UE can be received, the remote UE2 selects one relay UE and sends a relay connection establishment request to the selected relay UE. It is assumed that the UE2 does not receive the D2D relay broadcast information sent by the relay UE at this time, and the remote UE2 sends the D2D information of the discovery relay.
  • the D2D information of the discovery relay sent by the remote UE2 includes part or all of the following content: the identifier of the remote UE, the type of the remote UE, the type of the relay sought by the remote UE, and the communication of the remote UE.
  • Step 804 The relay UE1 receives the D2D information that the remote UE2 sends the discovery relay, and determines that the UE2 is looking for the relay UE according to the content of the message, and the relay UE1 uses the relay to discover the transmission resource or randomly selects the transmission resource pool from the relay.
  • the resource sends the relay response D2D information to the remote UE2;
  • the relay response D2D information may include part or all of the following content: a relay identifier, a relay type, a relay service cell identifier, a relay available time period, a relay belonging group identifier, and a relay mobile status finger. Display, relay PLMN information, relay prohibition status indication, and the like.
  • Step 805 The UE2 receives the relay response D2D information sent by the relay UE1, and sends a relay connection establishment request to the relay UE1.
  • the UE2 If the UE2 receives the relay response D2D information sent by the multiple relay UEs at the same time, the UE2 selects one relay UE and sends a relay connection establishment request to the selected relay UE.
  • Step 806 the relay UE1 receives the relay connection establishment request sent by the remote UE2, and the relay UE1 sends the relay connection establishment information to the remote UE2.
  • Step 807 the UE2 accesses the relay UE1, and the relay UE1 enters a relay active state.
  • step 808 the relay UE1 and the remote UE2 can forward data to each other.
  • the relay UE1 may subsequently receive the D2D communication information sent by the UE2 on the relay communication receiving resource pool, use the relay communication to send the resource, or send the D2D communication information to the remote UE2 from the relay communication transmission resource pool randomly selected resource.
  • the relay UE1 may also receive D2D discovery information sent by the accessed UE, connection establishment request information sent by other remote UEs that have not been accessed, and D2D information of the discovery relay.
  • the UE1 in the relay active state may periodically transmit the D2D relay broadcast information by using the relay discovery transmission resource or randomly selecting the resource from the relay discovery transmission resource pool.
  • the D2D relay broadcast information may include part or all of the following contents: a relay identifier, a relay type, a relay service cell identifier, a relay available time period, a relay belonging group identifier, a relay mobile status indication, and a relay PLMN information. Relay prohibition status indication, etc.
  • the UE1 in the relay active state may periodically send the D2D relay broadcast information by using the relay discovery transmission resource or randomly selecting the resource from the relay discovery transmission resource pool.
  • the D2D relay broadcast information may include a relay identifier, a relay type, a relay service cell identifier, a relay available time period, The group ID of the relay belongs to the relay, the relay status indication, the relay PLMN information, the relay prohibit status indication, and the like.
  • the UE2 in the uncovered state wants to find the relay UE to connect to the network transmission information, and then the UE2 first monitors the relay discovery reception resource pool, and determines whether there is a D2D relay broadcast information sent by the relay UE in the vicinity, and the UE2 receives the message at this time.
  • the relay UE1 transmits the D2D relay broadcast information, and the remote UE2 sends a relay connection establishment request to the relay UE1.
  • the relay UE1 receives the relay connection establishment request sent by the remote UE2, and the relay UE1 sends the relay connection establishment information to the remote UE2 to establish a connection with the UE2.
  • Step 902 When the UE2 accesses, the UE1 starts an active state timer corresponding to the remote UE2.
  • Step 903 The relay UE1 determines whether any one of the following events occurs, if yes, step 904 is performed, otherwise step 907 is performed: receiving D2D communication information sent by the remote UE2 on the relay communication receiving resource pool; using relay communication The D2D communication information is sent to the remote UE2 by sending resources or randomly selecting resources from the relay communication resource pool; and the D2D discovery information sent by the remote UE2 is received.
  • Step 904 it is determined whether the received message is the connection release request information sent by the remote UE2, if yes, step 906 is performed, otherwise step 905 is performed;
  • Step 905 the relay UE1 restarts the active state timer of the remote UE2, and returns to step 903;
  • the relay UE1 receives the D2D communication information sent by the remote UE2, or the relay UE1 sends the D2D communication information to the remote UE2, or the relay UE1 receives the D2D discovery information sent by the remote UE2, and triggers the relay UE1 to restart.
  • Remote UE2 active state timer Remote UE2 active state timer.
  • Step 906 if the UE1 receives the connection release request information sent by the UE2, the UE1 sends the connection release information to the UE2, and step 8 is performed;
  • Step 907 it is determined whether the remote UE2 active state timer expires, and if so, step 908 is performed, otherwise returns to step 903;
  • step 908 the UE1 releases the connection with the remote UE2 and the context of the saved UE2.
  • the relay UE1 may send the D2D information or the paging information of the remote UE2 to the remote UE2 when the active state timer of the remote UE2 times out, if the response sent by the remote UE2 is not received within the predetermined time. Information, the relay UE1 releases the connection with the remote UE2.
  • UE1, UE2, and UE3 with D2D functions, respectively.
  • UE1 is in a network coverage state, and UE2 and UE3 are in no network coverage.
  • This example describes a procedure for relaying a UE from a relay active state to a relay inactive state.
  • the relay UE1 sets an active state timer for each remote UE, as shown in FIG. 10, including the following steps:
  • Step 1001 The base station selects UE1 as a relay node, enables relay power saving, and relays UE1 to enter a relay active state.
  • Step 1002 At this time, UE2 and UE3 in the uncovered state have accessed the relay UE1, and when the UE2 and the UE3 access, the relay UE1 starts an active state timer corresponding to the UE2 and the UE3, respectively.
  • the relay UE1 may use the method in the example 5 (steps 903-907 in the example 5) to determine whether it is necessary to release the connection with the UE2, and determine whether the connection with the UE3 needs to be released. If yes, go to step 1004, otherwise return This step;
  • step 1004 the relay UE1 successively releases the connection with the UE2 and the UE3, and the UE1 enters the relay inactive state.
  • UE1, UE2, and UE3 use UE1, UE2, and UE3 with D2D functions, respectively.
  • UE1 is in a network coverage state, while UE2 and UE3 are in no network coverage.
  • This example describes the flow of relaying a UE from a relay active state to a relay inactive state.
  • the relay UE1 maintains its own relay active state timer, as shown in FIG. 11, including the following steps:
  • Step 1101 the base station selects the UE1 as the relay node, and sends the relay configuration information thereto. After the UE1 receives the relay configuration information, if the configuration information indicates that the relay function is activated and the relay power saving is enabled, the UE1 enters the relay non- Active status;
  • Step 1102 The relay UE1 monitors the D2D discovery information sent by the remote UE on the relay discovery receiving resource pool, and the relay UE1 receives the D2D discovery information sent by the remote UE2, and determines that the UE2 is looking for the relay UE according to the message content. UE1 enters the relay active state and starts the relay activity. Dynamic state timer
  • the relay UE1 establishes a connection with the remote UE2 and the UE3 and forwards data for the same.
  • the relay UE1 determines whether any of the following events occur. If yes, step 1104 is performed; otherwise, step 1105 is performed: the relay UE1 is in the middle.
  • the D2D communication information sent by the UE2 or the UE3 is received on the communication receiving resource pool; the relay UE1 transmits the resource by using the relay communication or randomly transmits the resource pool from the relay communication to send the D2D communication information to the remote UE2 or the UE3; the relay UE1 receives D2D discovery information sent to UE2 or UE3;
  • Step 1104 the relay UE1 restarts the relay active state timer, and returns to step 1103;
  • Step 1105 the relay UE1 determines whether the relay active state timer maintained by it is timed out, if yes, step 1106 is performed, otherwise returns to step 1103;
  • step 1106 the relay UE1 enters the relay inactive state again, and only listens to the D2D discovery information of the looking relay UE sent by the remote UE on the relay discovery receiving resource pool.
  • UE1 is in network coverage and UE2 is in network coverage.
  • UE1 in network coverage is interested in becoming a relay node, providing relay services for uncovered UEs.
  • the UE1 activates the relay function according to the pre-configured relay configuration information, and enables the power saving.
  • the UE1 enters the relay inactive state, and starts to receive the discovery relay D2D information sent by the remote UE on the relay discovery receiving resource pool.
  • UE1 may send a relay status indication to the serving base station of UE1 after entering the relay inactive state, wherein the relay status indication may further indicate a relay inactive status.
  • the relay UE1 receives the discovery relay D2D information sent by the remote UE2, and judges that the UE2 is looking for the relay UE according to the message content, the UE1 enters the relay active state. Similarly, after entering the relay active state, the UE1 may enter the relay active state.
  • a relay status indication is sent to the serving base station of UE1, wherein the relay status indication may further indicate a relay active status.
  • the UE1 may also send a relay status indication to the serving base station of the UE1, wherein the relay status indicates that the UE1 is no longer acting as a relay node.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the UE with the relay capability can enter the second state of the relay when there is no remote user access, and enter the relay first after receiving the request of the remote user for the relay.
  • Status, periodic broadcast relay information in this way, the relay UE relay state is switched, and the relay UE can achieve the purpose of power saving when it is in the relay second state.

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Abstract

本文公开一种设备直通***中继状态确定方法和装置。所述方法包括：中继用户设备UE获取中继配置信息和/或接收设备到设备D2D信息，根据所述中继配置信息和/或D2D信息确定中继UE的中继状态。所述装置位于中继用户设备UE，包括信息获取模块和状态确定模块。

Description

一种设备直通***中继状态确定方法及装置 技术领域
本申请涉及但不限于无线通信技术领域。
背景技术
随着无线多媒体业务的发展，人们对高数据速率和用户体验的需求日益增长，从而对传统蜂窝网络的***容量和覆盖提出了较高要求。另一方面公共安全、社交网络、近距离数据共享、本地广告等应用场景使得人们对了解附近人或事物并与之通信的需求逐渐增加。传统的以基站为中心的蜂窝网络在高数据速率以及邻近服务的支持方面存在明显的局限性，在这种需求背景下，代表未来通信技术发展新方向的D2D(Device-to-Device，设备到设备或称设备直通)技术应运而生。D2D技术的应用，可以减轻蜂窝网络的负担、减少用户设备的电池功耗、提高数据速率，并改善网络基础设施的鲁棒性，很好地满足上述高数据速率业务和邻近服务的要求。目前D2D技术又称之为邻近服务(Proximity Services，ProSe)，单边链路(Sidelink，SL)。
D2D技术可以工作在授权频段或非授权频段，允许多个支持D2D功能的用户设备(即D2D用户设备，D2D User Equipment，D2D UE)在有网络基础设施或无网络基础设施的情况下进行直接发现和/或直接通信。D2D的应用场景主要有三种：
1)UE1和UE2在蜂窝网络的覆盖下进行数据交互，用户面数据不经过网络基础设施，如图1的场景1；
2)在弱覆盖区域或无覆盖区域的UE中继传输，如图1中的场景2，允许信号质量较差的UE4通过附近有网络覆盖的UE3与网络进行通信，能帮助运营商扩展覆盖、提高容量；
3)在发生地震或紧急情况，蜂窝网络不能正常工作的情况下，允许设备间直接通信，如图1中的场景3，UE5，UE6和UE7间控制面和用户面都不经过网络基础设施而进行一跳或多跳的数据通信。
D2D技术通常包括D2D发现技术和D2D通信技术，其中，D2D发现技术是指用于判断或确定第一用户设备是否邻近第二用户设备的技术。通常，D2D用户设备间可通过发送或接收发现信号(发现信息)来发现对方；D2D通信技术是指D2D用户设备之间部分或全部通信数据可以不通过网络基础设施而直接进行通信的技术。
对于图1中的场景2对应的UE到网络中继(UE-to-Network Relay)场景，所述UE3可以和网络侧使用已有LTE方式通讯，同时还可以作为中继与覆盖外(out of coverage)的终端(图示中的UE4)使用D2D方式通讯，这些方式包括D2D发现(Discovery)和/或D2D通讯(communication)。如果覆盖外或是信号较差的终端UE4通过覆盖内的终端UE3将数据发送给基站，那么我们称呼UE4为远端用户(Remote UE)，UE3为中继用户(Relay UE)。类似的，对于场景3对应的UE-to-UE Relay场景，UE6可在UE5和UE7之间转发数据包，则UE6可称之为中继用户，而UE5和UE7可称之为远端用户。
相关技术并未对场景2和场景3中继传输模式中继状态机制给出***完善的解决方案。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本文提供一种设备直通***中继状态确定方法和装置。
一种设备直通***中继状态确定方法，包括：
中继用户设备UE获取中继配置信息和/或接收设备到设备D2D信息，根据所述中继配置信息和/或D2D信息确定中继UE的中继状态。
可选地，所述中继UE获取中继配置信息，包括：
所述中继UE接收基站发送的或者近距离服务功能发送的中继配置信息，或者所述中继UE获取自身预配置的中继配置信息；
所述中继配置信息包括以下内容至少之一：中继发现资源或资源池信 息，中继通信资源或资源池信息，中继功能的激活指示，中继功能的去激活指示，中继节电使能指示，中继节电禁止指示，中继活动状态定时器，远端UE活动状态定时器。
可选地，所述中继发现资源或资源池信息包括：中继发现发送资源或资源池，中继发现接收资源池；所述中继通信资源或资源池信息包括：中继通信发送资源或资源池，中继通信接收资源池。
可选地，所述中继发现发送资源或资源池包括以下内容至少之一：有覆盖D2D发现发送资源或资源池，无覆盖D2D发现发送资源池；所述中继发现接收资源池包括：有覆盖D2D发现接收资源池，以及无覆盖D2D发现接收资源池；其中：所述有覆盖D2D发现接收资源池包括中继UE服务小区的D2D发现发送资源池以及中继UE服务小区的邻区对应的D2D发现发送资源池。
可选地，所述中继配置信息还包括以下内容的一种或多种：中继第一状态监听周期、监听帧偏移、监听子帧偏移、监听持续时长。
可选地，所述中继UE根据中继配置信息确定中继UE的中继状态，包括：
所述中继配置信息包括：中继功能激活指示，所述中继UE执行中继功能；或者
所述中继配置信息包括：中继功能去激活指示，所述中继UE不再执行中继功能；或者
所述中继配置信息包括：中继节电使能指示，所述中继UE根据所述中继配置信息进入中继第一状态；或者
所述中继配置信息包括：中继节电禁止指示，所述中继UE根据所述中继配置信息进入中继第二状态。
可选地，所述中继UE根据所述中继配置信息和/或D2D信息，确定中继UE的中继状态，包括：
所述中继UE接收到远端UE发送的发现中继的D2D信息后进入中继第二状态；或者，
所述中继UE接收到远端UE发送的发现中继的D2D信息后，与所述远端UE进行交互，在与所述远端UE建立连接后，进入中继第二状态。
可选地，所述中继UE接收到远端UE发送的发现中继的D2D信息后，与所述远端UE进行交互，在与所述远端UE建立连接后，进入中继第二状态，包括：
所述中继UE接收到远端UE发送的发现中继的D2D信息后，向所述远端UE发送发现中继响应D2D信息，在收到所述远端UE发送的中继连接建立请求后，向所述远端UE发送中继连接建立信息，所述中继UE进入中继第二状态。
可选地，所述中继UE根据中继配置信息和D2D信息，确定中继UE的中继状态，包括：
所述中继UE在进入中继第二状态时启动所述中继活动状态定时器，当所述中继活动状态定时器超时时，所述中继UE进入中继第一状态。
可选地，所述中继UE启动所述中继活动状态定时器后，所述方法还包括：
在发生以下事件任意之一时，所述中继UE重启所述中继活动状态定时器：
接收到已接入的任意一远端UE发送给所述中继UE的D2D通信信息；接收到已接入的任意一远端UE发送的D2D发现信息；所述中继UE向已接入的任意一远端UE发送D2D通信信息。
可选地，所述中继UE根据中继配置信息和D2D信息，确定中继UE的中继状态，包括：
所述中继UE在远端UE接入时，为所述远端UE设置并启动对应的活动状态定时器；
当所述远端UE的活动状态定时器超时时，所述中继UE释放与所述远端UE的连接；或者当所述远端UE的活动状态定时器超时时，所述中继UE向所述远端UE发送发现远端UE的D2D信息或是寻呼信息，如果在预定时间内接收不到所述远端UE发送的响应信息，则所述中继UE释放与所述远端 UE的连接；
当所述中继UE接收到已接入的远端UE发送的连接释放请求信息，则停止所述远端UE对应的活动状态定时器，释放与所述远端UE的连接；
所述中继UE在释放所有已接入的远端UE的连接后进入中继第一状态。
可选地，所述中继UE为所述远端UE设置并启动对应的活动状态定时器后，所述方法还包括：
在发生以下事件任意之一时，所述中继UE重启所述远端UE对应的活动状态定时器：
接收到所述远端UE发送给中继UE的D2D通信信息；接收到所述远端UE发送的D2D发现信息；所述中继UE向所述远端UE发送D2D通信信息。
可选地，确定所述中继UE的中继状态为中继第一状态，所述方法还包括：处于中继第一状态的中继UE执行以下操作中的一种：
接收远端UE发送的发现中继的D2D信息；
接收到远端UE发送的发现中继的D2D信息，与所述远端UE进行交互，与所述远端UE建立连接。
可选地，确定所述中继UE的中继状态为中继第二状态，所述方法还包括：处于中继第二状态的中继UE执行以下操作中的一种或几种：
周期性发送中继广播信息；
接收尚未接入所述中继UE的远端UE发送的发现中继的D2D信息；
接收已经接入所述中继UE的远端UE发送的D2D发现信息；
接收已经接入所述中继UE的远端UE发送的D2D通信信息；
向已经接入所述中继UE的远端UE发送D2D通信信息。
可选地，所述方法还包括：尚未接入所述中继UE的远端UE接收到处于中继第二状态的中继UE发送的中继广播信息后，选择一个中继UE，向选中的中继UE发送中继连接建立请求，所述中继UE接收到所述中继连接建立请求后，向所述远端UE发送中继连接建立信息。
可选地，所述中继UE确定中继UE的中继状态后，所述方法还包括：所 述中继UE向基站上报中继UE的中继状态。
一种设备直通***中继状态确定装置，位于中继用户设备UE，包括信息获取模块和状态确定模块，其中：
所述信息获取模块，设置为：获取中继配置信息和/或接收设备到设备D2D信息；
所述状态确定模块，设置为：根据所述中继配置信息和/或D2D信息确定中继UE的中继状态。
可选地，所述信息获取模块是设置为：接收基站发送的或者近距离服务功能发送的中继配置信息，或者所述信息获取模块获取所述中继UE预配置的中继配置信息。
可选地，所述状态确定模块根据中继配置信息确定中继UE的中继状态，包括：
所述中继配置信息包括：中继功能激活指示，所述状态确定模块是设置为：执行中继功能；或者
所述中继配置信息包括：中继功能去激活指示，所述状态确定模块是设置为：不再执行中继功能；或者
所述中继配置信息包括：中继节电使能指示，所述状态确定模块是设置为：根据所述中继配置信息进入中继第一状态；或者
所述中继配置信息包括：中继节电禁止指示，所述状态确定模块是设置为：根据所述中继配置信息进入中继第二状态。
可选地，所述状态确定模块所述状态确定模块是设置为：
接收到远端UE发送的发现中继的D2D信息后确定所述中继UE进入中继第二状态；或者，
接收到远端UE发送的发现中继的D2D信息后，与所述远端UE进行交互，在所述中继UE与所述远端UE建立连接后，确定所述中继UE进入中继第二状态。
可选地，所述状态确定模块是设置为：
接收到远端UE发送的发现中继的D2D信息后，向所述远端UE发送发现中继响应D2D信息，在收到所述远端UE发送的中继连接建立请求后，向所述远端UE发送中继连接建立信息，确定所述中继UE进入中继第二状态。
可选地，所述状态确定模块是设置为：
在所述中继UE进入中继第二状态时启动所述中继活动状态定时器，当所述中继活动状态定时器超时时，确定所述中继UE进入中继第一状态。
可选地，所述状态确定模块还设置为：在启动所述中继活动状态定时器后，判断如果发生以下事件任意之一，则重启所述中继活动状态定时器：
接收到已接入的任意一远端UE发送给所述中继UE的D2D通信信息；接收到已接入的任意一远端UE发送的D2D发现信息；所述中继UE向已接入的任意一远端UE发送D2D通信信息。
可选地，所述状态确定模块是设置为：
在远端UE接入所述中继UE时，为所述远端UE设置并启动对应的活动状态定时器；当所述远端UE的活动状态定时器超时时，通知所述中继UE释放与所述远端UE的连接；或者当所述远端UE的活动状态定时器超时时，向所述远端UE发送发现远端UE的D2D信息或是寻呼信息，如果在预定时间内接收不到所述远端UE发送的响应信息，则通知所述中继UE释放与所述远端UE的连接；当接收到已接入的远端UE发送的连接释放请求信息，则停止所述远端UE对应的活动状态定时器，通知所述中继UE释放与所述远端UE的连接；在所述中继UE释放所有已接入的远端UE的连接后，确定所述中继UE进入中继第一状态。
可选地，所述状态确定模块还设置为：在为所述远端UE设置并启动对应的活动状态定时器后，判断如果发生以下事件任意之一，则重启所述远端UE对应的活动状态定时器：
接收到所述远端UE发送给中继UE的D2D通信信息；接收到所述远端UE发送的D2D发现信息；所述中继UE向所述远端UE发送D2D通信信息。
可选地，所述状态确定模块确定所述中继UE的中继状态为中继第一状 态，所述装置还包括第一模块，设置为：执行以下操作中的一种：
接收远端UE发送的发现中继的D2D信息；
接收到远端UE发送的发现中继的D2D信息，与所述远端UE进行交互，与所述远端UE建立连接。
可选地，所述状态确定模块确定所述中继UE的中继状态为中继第二状态，所述装置还包括第二模块，设置为：执行以下操作中的一种或几种：
周期性发送中继广播信息；
接收尚未接入所述中继UE的远端UE发送的发现中继的D2D信息；
接收已经接入所述中继UE的远端UE发送的D2D发现信息；
接收已经接入所述中继UE的远端UE发送的D2D通信信息；
向已经接入所述中继UE的远端UE发送D2D通信信息。
可选地，所述第二模块还设置为：在接收到尚未接入所述中继UE的远端UE发送的中继连接建立请求后，向所述远端UE发送中继连接建立信息。
可选地，所述装置还包括上报模块，设置为：在所述状态确定模块确定中继UE的中继状态后，向基站上报所述中继UE的中继状态。
一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行上述任一项的方法。
通过本发明实施例提出的方法和装置，具备中继能力的UE可以在没有远端用户接入时进入中继第二状态，当接收到远端用户寻找中继的请求之后进入中继第一状态，周期性的广播中继信息，通过这种方式实现中继UE中继状态的切换，当中继UE处于中继第二状态时可以达到节电的目的。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1设备直通***发现/通信示意图；
图2是本发明实施例1设备直通***中继状态确定方法示意图；
图3是本发明实施例2设备直通***中继状态确定装置示意图；
图4是本发明实施例设备直通***中继状态转换示意图；
图5是应用示例1基站配置中继节点使能节电的流程图；
图6是应用示例2基站配置中继节点去使能节电的流程图；
图7是应用示例3中继UE从中继非活动状态进入中继活动状态的流程图；
图8是应用示例4中继UE从中继非活动状态进入中继活动状态的流程图；
图9是应用示例5远端UE中继活动状态维护流程图；
图10是应用示例6中继UE从中继活动状态到中继非活动状态的流程图；
图11是应用示例7中继UE从中继活动状态到中继非活动状态的流程图。
本发明的实施方式
下文中将结合附图对本发明的实施方式进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机***中执行。并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
实施例1
本实施例描述一种设备直通***中继状态确定方法，如图2所示，包括：
步骤10，中继UE获取中继配置信息和/或接收设备到设备D2D信息；
中继UE接收基站发送的或者近距离服务功能(ProSe function)实体发 送的中继配置信息，或者所述中继UE获取自身预配置的中继配置信息；
所述中继配置信息包括以下内容至少之一：中继发现资源或资源池信息，中继通信资源或资源池信息，中继功能的激活指示，中继功能的去激活指示，中继节电使能指示，中继节电禁止指示，中继活动状态定时器，远端UE活动状态定时器。其中，所述中继发现资源或资源池信息包括：中继发现发送资源或资源池，中继发现接收资源池；所述中继通信资源或资源池信息包括：中继通信发送资源或资源池，中继通信接收资源池。所述中继发现发送资源或资源池包括以下内容至少之一：有覆盖D2D发现发送资源或资源池，无覆盖D2D发现发送资源池；所述中继发现接收资源池包括：有覆盖D2D发现接收资源池，以及无覆盖D2D发现接收资源池；其中：所述有覆盖D2D发现接收资源池包括中继UE服务小区的D2D发现发送资源池以及中继UE服务小区的邻区对应的D2D发现发送资源池。
可选地，所述中继配置信息还包括以下内容的一种或多种：中继第一状态监听周期、监听帧偏移、监听子帧偏移、监听持续时长。
步骤20，根据所述中继配置信息和/或D2D信息确定中继UE的中继状态。
可选地，在UE根据自身预配置信息启动中继功能和/或确定中继UE的中继状态后，所述中继UE向基站上报UE正在执行中继功能和/或中继UE的中继状态。
●应用1：
本应用是根据中继配置信息确定中继UE的中继状态，包括以下几种情况：
如果中继配置信息包括中继功能激活指示，所述中继UE执行中继功能；
如果中继配置信息包括中继功能去激活指示，所述中继UE不执行中继功能；
如果中继配置信息包括中继节电使能指示，则执行中继功能的中继UE根据所述中继配置信息进入中继第一状态；
如果中继配置信息包括中继节电禁止指示，则执行中继功能的中继UE根据所述中继配置信息进入中继第二状态。
中继配置信息中的中继功能激活和去激活指示可以通过显示或隐式的方式指示。如通过RRC消息中的IE字段或是MAC CE来显式指示或是UE获取到中继配置信息即隐含指示激活中继功能，如果UE接收到的重配信息中不再包含中继配置信息，则隐含指示去激活中继功能。
●应用2：
本应用是中继UE根据所述中继配置信息和/或D2D信息，从中继第一状态进入中继第二状态的应用，包括以下情况之一：
情况一，所述中继UE接收到远端UE发送的发现中继的D2D信息后直接进入中继第二状态；
情况二，所述中继UE接收到远端UE发送的发现中继的D2D信息后，与所述远端UE进行交互，在与所述远端UE建立连接后，进入中继第二状态。
其中，所述中继UE接收到远端UE发送的发现中继的D2D信息后，向所述远端UE发送发现中继响应D2D信息，在收到所述远端UE发送的中继连接建立请求后，向所述远端UE发送中继连接建立信息，所述中继UE进入中继第二状态。
●应用3：
本应用是中继UE根据中继配置信息和D2D信息，从中继第二状态进入中继第一状态的应用，包括以下情况之一：
情况一，所述中继UE在进入中继第二状态时启动所述中继活动状态定时器，当所述中继活动状态定时器超时时，所述中继UE进入中继第一状态。
可选地，所述中继UE启动所述中继活动状态定时器后，在发生以下事件任意之一时，所述中继UE重启所述中继活动状态定时器：接收到已接入的任意一远端UE发送给所述中继UE的D2D通信信息；接收到已接入的任意一远端UE发送的D2D发现信息；所述中继UE向已接入的任意一远端UE 发送D2D通信信息。
情况二，所述中继UE在远端UE接入时，为所述远端UE设置并启动对应的活动状态定时器；当所述远端UE的活动状态定时器超时时，所述中继UE释放与所述远端UE的连接；中继UE还可在远端UE的活动状态定时器超时时，向所述远端UE发送发现远端UE的D2D信息或是寻呼信息，如果在预定时间内接收不到远端UE发送的响应信息，则所述中继UE释放与所述远端UE的连接；当所述中继UE接收到已接入的远端UE发送的连接释放请求信息，则停止所述远端UE对应的活动状态定时器，释放与所述远端UE的连接；所述中继UE在释放所有已接入的远端UE的连接后进入中继第一状态。
可选地，所述中继UE为所述远端UE设置并启动对应的活动状态定时器后，在发生以下事件任意之一时，所述中继UE重启所述远端UE对应的活动状态定时器：接收到所述远端UE发送给中继UE的D2D通信信息；接收到所述远端UE发送的D2D发现信息；所述中继UE向所述远端UE发送D2D通信信息。
从另一角度来看，处于中继第一状态的中继UE执行以下操作中的一种：
(1)接收远端UE发送的发现中继的D2D信息；
(2)接收到远端UE发送的发现中继的D2D信息，与所述远端UE进行交互，与所述远端UE建立连接。
其中，接收到远端UE发送的发现中继的D2D信息后，向所述远端UE发送发现中继响应D2D信息；接收到所述远端UE发送的中继连接建立请求后，向所述远端UE发送中继连接建立信息。
处于中继第二状态的中继UE执行以下操作中的一种或几种：
(1)周期性发送中继广播信息；
尚未接入所述中继UE的远端UE接收到处于中继第二状态的中继UE发 送的中继广播信息后，选择一个中继UE，向选中的中继UE发送中继连接建立请求，所述中继UE接收到所述中继连接建立请求后，向所述远端UE发送中继连接建立信息。
(2)接收尚未接入所述中继UE的远端UE发送的发现中继的D2D信息；
(3)接收已经接入所述中继UE的远端UE发送的D2D发现信息；
(4)接收已经接入所述中继UE的远端UE发送给所述中继UE的D2D通信信息；
(5)向已经接入所述中继UE的远端UE发送D2D通信信息。
实施例2
本实施例描述一种设备直通***中继状态确定装置，该装置位于中继用户设备UE，如图3所示，包括信息获取模块31和状态确定模块32，其中：
所述信息获取模块31，设置为：获取中继配置信息和/或接收设备到设备D2D信息；
所述信息获取模块31接收基站发送的或者ProSe function发送的中继配置信息，或者所述信息获取模块31获取所述中继UE预配置的中继配置信息；
所述状态确定模块32，设置为：根据所述中继配置信息和/或D2D信息确定中继UE的中继状态。
●应用1
所述状态确定模块32根据中继配置信息确定中继UE的中继状态，包括以下几种情况：
如果中继配置信息包括中继功能激活指示，所述中继UE执行中继功能；
如果中继配置信息包括中继功能去激活指示，所述中继UE不执行中继功能；
如果中继配置信息包括中继节电使能指示，则执行中继功能的中继UE根据所述中继配置信息进入中继第一状态；
如果中继配置信息包括中继节电禁止指示，则执行中继功能的中继UE根据所述中继配置信息进入中继第二状态。
中继配置信息中的中继功能激活和去激活指示可以通过显示或隐式的方式指示。如通过RRC消息中的IE字段或是MAC CE来显式指示或是UE获取到中继配置信息即隐含指示激活中继功能，如果UE接收到的重配信息中不再包含中继配置信息，则隐含指示去激活中继功能。
●应用2：
所述状态确定模块32根据所述D2D信息，确定中继UE从中继第一状态进入中继第二状态：
情况一，所述状态确定模块32接收到远端UE发送的发现中继的D2D信息后确定所述中继UE进入中继第二状态；
情况二，所述状态确定模块32接收到远端UE发送的发现中继的D2D信息后，与所述远端UE进行交互，在所述中继UE与所述远端UE建立连接后，确定所述中继UE进入中继第二状态。
其中，所述状态确定模块32接收到远端UE发送的发现中继的D2D信息后，向所述远端UE发送发现中继响应D2D信息，在收到所述远端UE发送的中继连接建立请求后，向所述远端UE发送中继连接建立信息，确定所述中继UE进入中继第二状态。
●应用3：
所述状态确定模块32根据中继配置信息和D2D信息，确定中继UE从中继第二状态进入中继第一状态：
情况一，所述状态确定模块32在所述中继UE进入中继第二状态时启动所述中继活动状态定时器，当所述中继活动状态定时器超时时，确定所述中继UE进入中继第一状态。
可选地，所述状态确定模块32还设置为：在启动所述中继活动状态定时器后，判断如果发生以下事件任意之一，则重启所述中继活动状态定时 器：接收到已接入的任意一远端UE发送给所述中继UE的D2D通信信息；接收到已接入的任意一远端UE发送的D2D发现信息；所述中继UE向已接入的任意一远端UE发送D2D通信信息。
情况二，所述状态确定模块32在远端UE接入所述中继UE时，为所述远端UE设置并启动对应的活动状态定时器；当所述远端UE的活动状态定时器超时时，通知所述中继UE释放与所述远端UE的连接；中继UE还可在远端UE的活动状态定时器超时时，向所述远端UE发送发现远端UE的D2D信息或是寻呼信息，如果在预定时间内接收不到远端UE发送的响应信息，则所述中继UE释放与所述远端UE的连接；当所述状态确定模块32接收到已接入的远端UE发送的连接释放请求信息，则停止所述远端UE对应的活动状态定时器，通知所述中继UE释放与所述远端UE的连接；在所述中继UE释放所有已接入的远端UE的连接后所述状态确定模块32确定所述中继UE进入中继第一状态。
可选地，所述状态确定模块32还设置为：在为所述远端UE设置并启动对应的活动状态定时器后，判断如果发生以下事件任意之一，则重启所述远端UE对应的活动状态定时器：接收到所述远端UE发送给中继UE的D2D通信信息；接收到所述远端UE发送的D2D发现信息；所述中继UE向所述远端UE发送D2D通信信息。
在一个实施例中，所述状态确定模块32确定所述中继UE的中继状态为中继第一状态，所述装置还包括第一模块，设置为：执行以下操作中的一种：
(1)接收远端UE发送的发现中继的D2D信息；
(2)接收到远端UE发送的发现中继的D2D信息，与所述远端UE进行交互，与所述远端UE建立连接。
其中，所述第一模块接收到远端UE发送的发现中继的D2D信息后，向所述远端UE发送发现中继响应D2D信息；所述第一模块接收到所述远端UE发送的中继连接建立请求后，向所述远端UE发送中继连接建立信息。
在一个实施例中，所述状态确定模块32确定所述中继UE的中继状态为中继第二状态，所述装置还包括第二模块，设置为：执行以下操作中的一种或几种：
(1)周期性发送中继广播信息；
(2)接收尚未接入所述中继UE的远端UE发送的发现中继的D2D信息；
(3)接收已经接入所述中继UE的远端UE发送的D2D发现信息；
(4)接收已经接入所述中继UE的远端UE发送的D2D通信信息；
(5)向已经接入所述中继UE的远端UE发送D2D通信信息。
可选地，所述第二模块还设置为：在接收到尚未接入所述中继UE的远端UE发送的中继连接建立请求后，向所述远端UE发送中继连接建立信息。
在一个实施例中，所述装置还包括上报模块，设置为：在所述状态确定模块32确定中继UE的中继状态后，向基站上报所述中继UE的中继状态。
下面结合应用示例对上述实施例方法进行进一步说明。在下文中，将中继第一状态称为中继非活动状态，将中继第二状态称为中继活动状态。
具备中继能力的UE可以在没有远端用户接入时进入非活动状态，当接收到远端用户发送的发现中继的D2D信息之后才进入中继活动状态，周期性的广播中继信息，由此可以实现中继UE节电的目的。
中继UE可以处于两种状态：中继活动状态和中继非活动状态。如图4所示，当周围没有远端UE时，中继UE进入中继非活动状态，在中继非活动状态，中继UE仅仅周期性的醒来在中继发现接收资源上监听是否有远端UE发送的发现中继的D2D信息(例如寻找中继请求消息)，如果有，则中继UE发送发现中继响应D2D信息给远端UE。之后中继UE等待远端UE发送的连接建立请求，如果收到该消息，则中继UE发送连接建立消息给远端 UE，从而与远端UE建立连接。与此同时中继UE进入中继活动态。除此之外，中继UE也可以在接收到远端UE发送发现中继的D2D信息之后立即进入中继活动状态。
中继UE进入中继活动状态后，中继UE可在转发远端UE的数据包的同时，周期性的广播发送中继信息，等待更多的远端UE听到消息后接入。中继UE可以维护一个中继活动状态定时器，当中继UE为远端UE转发数据包或是接收到有远端UE发送的接入请求或是已接入中继UE的远端UE发送的D2D发现信息时，重启该定时器，如果该定时器超时，则中继UE认为已接入的远端UE都处于非活动状态，因此中继UE可发起释放与远端UE的连接，进入中继非活动状态。除此之外，中继UE还可为每个接入的远端UE设置一个活动状态定时器，每当收到来自远端UE的数据包或发现消息，或是向远端UE发送数据包时就重启对应于该远端UE的活动状态定时器。当远端UE对应的活动状态定时器超时，中继UE释放掉本地保存的远端UE的上下文。中继UE还可在远端UE的活动状态定时器超时时，向所述远端UE发送发现远端UE的D2D信息或是寻呼信息，如果在预定时间内接收不到远端UE发送的响应信息，则所述中继UE释放与所述远端UE的连接。此外中继UE也有可能收到远端UE发送的连接释放信息，当收到该消息后，中继UE重置远端UE对应的活动状态定时器，并释放远端UE的上下文。此外当有高优先级的远端UE或是更高ARP(Allocation and Retention Priority，分配和保留优先级)的承载要求建立时，中继UE可向低优先级的可被抢占资源的远端UE主动发消息请求释放连接。当中继UE释放掉所有的远端UE的PC5连接时，中继UE回到中继非活动状态，不再周期性的发送中继消息以及监听中继数据接收资源，此时仅仅周期性的监听是否有远端UE发送的发现中继的D2D信息。
以下通过应用示例给出中继节电方法及相关的信令流程。
应用示例1
Officer A，B分别使用具备D2D功能的UE1，UE2。UE1处于有网络覆盖状态，而UE2处于无网络覆盖。本示例描述基站(eNB)配置中继节点使 能节电的流程。处于有网络覆盖的UE1有兴趣成为中继节点，为无覆盖的UE提供中继服务，如UE1对成为UE-to-network relay感兴趣。如图5所示，包括以下步骤：
步骤501，UE1可发送D2D中继信息给基站，其中包括对relay的兴趣指示，以及UE当前的位置信息；
步骤502，基站接收到UE1发送的D2D中继信息并选择UE1作为中继节点，则基站向UE1发送中继配置信息，本例中为UE-to-network relay(UE到网络中继)配置建立信息；
中继配置信息可包含以下信息中的一种或多种：中继发现资源或资源池信息，中继通信资源或资源池信息，中继功能的激活指示，中继功能的去激活指示，中继节电使能指示，中继节电禁止指示，中继活动状态定时器，远端UE活动状态定时器等。在本例中，中继配置信息至少包含中继功能的激活指示以及中继节电使能指示。
中继通信资源或资源池信息用于中继UE与远端UE的通信，其中包括中继通信发送资源或资源池信息，以及中继通信接收资源池信息。中继发现资源或资源池信息用于中继UE发现远端UE，其中包括中继发现发送资源或资源池信息，以及中继发现接收资源池信息。其中，中继发现发送资源或资源池信息包括有覆盖D2D发现发送资源或资源池信息，和/或，无覆盖D2D发现发送资源池信息，中继发现接收资源池信息包括有覆盖D2D发现接收资源池信息以及无覆盖D2D发现接收资源池信息。有覆盖D2D发现接收资源池信息包括中继UE服务或驻留小区的D2D发现发送资源以及中继UE服务或驻留小区的邻区对应的D2D发现发送资源。
除了专有RRC(Radio Resource Control，无线资源控制)信令，UE1还可从基站广播消息中接收中继资源池配置信息。此外，UE1还可以从ProSe function(近距离服务功能，用于D2D配置、授权认证的网元实体，位于核心网)接收的中继配置信息或是UE1预配置中继配置信息。
步骤503，UE1收到激活中继功能的中继配置信息，则UE1启动中继功能，如果配置信息指示使能中继节电，则UE1进入中继非活动状态。
应用示例2
Mary，John和Peter分别持有具备D2D通信及中继功能的UE1、UE2和UE3。UE1和UE2彼此在D2D通信范围内，UE2和UE3彼此在D2D通信范围内，而UE1和UE3彼此不在D2D通信范围内。本示例描述基站配置中继节点去使能节电的流程。假设基站配置UE2成为UE-to-UE中继，如图6所示，包括以下步骤：
步骤601，基站向UE2发送中继配置信息，本例中为UE-to-UE relay(UE到UE中继)配置建立信息；
中继配置信息可包含以下信息中的一种或多种：中继发现资源或资源池信息，中继通信资源或资源池信息，中继功能的激活指示，中继功能的去激活指示，中继节电使能指示，中继节电禁止指示，中继活动状态定时器，远端UE活动状态定时器等。在本例中，中继配置信息至少包含中继功能的激活指示以及中继节电禁止指示。
中继通信资源或资源池信息用于中继UE与远端UE的通信，其中包括中继通信发送资源或资源池信息，以及中继通信接收资源池信息。中继发现资源或资源池信息用于中继UE与远端UE的发现，其中包括中继发现发送资源或资源池，以及中继发现接收资源池信息。中继发现发送资源或资源池信息包括有覆盖D2D发现发送资源或资源池信息，和/或，无覆盖D2D发现发送资源池信息，中继发现接收资源池信息包括有覆盖D2D发现接收资源池信息以及无覆盖D2D发现接收资源池信息。有覆盖D2D发现接收资源池信息包括中继UE服务小区(或称驻留小区)的D2D发现发送资源池以及中继UE服务小区的邻区对应的D2D发现发送资源池。
除了专有RRC信令，UE2还可从基站广播消息中接收中继资源池配置信息。此外，UE2还可以从ProSe function接收的中继配置信息或是UE2预配置中继配置信息。
步骤602，UE2收到中继配置信息后，如果配置信息指示激活中继功能并且禁止中继节电，则UE2进入中继活动状态。
应用示例3
Officer A，B分别使用具备D2D功能的UE1，UE2。UE1处于有网络覆盖状态，而UE2处于无网络覆盖。本示例描述中继UE从中继非活动状态进入中继活动状态的流程。处于有网络覆盖的UE1有兴趣成为中继节点，为无覆盖的UE提供中继服务。假设基站选择UE1作为中继节点，如图7所示，包括以下步骤：
步骤701，基站向UE1发送设备直通中继配置信息，UE1收到中继配置信息后，如果配置信息指示激活中继功能并且使能中继节电，则UE1执行中继功能并进入中继非活动状态；
步骤702，中继UE1在中继发现接收资源池上监听远端UE发送发现中继的D2D信息；
中继UE1根据中继配置信息包含的中继非活动状态监听周期，监听帧和/或子帧偏移，监听持续时长等信息监听中继发现接收资源池上远端UE发送的D2D发现信息。在非中继发现接收资源池对应的子帧上，UE1无需监听对应的子帧。
步骤703，远端UE2发送发现中继的D2D信息；
此时处于无覆盖状态的远端UE2希望找到中继UE连接到网络传输信息，则UE2首先监听中继发现接收资源池，判断附近是否有中继UE发送的D2D中继广播信息。如果能接收到中继UE发送的中继广播信息，则远端UE2选择一个中继UE，并向选中的中继UE发送中继连接建立请求。假设UE2此时接收不到中继UE发送的中继广播信息，则远端UE2发送发现中继的D2D信息。
远端UE2发送的发现中继的D2D信息可包括以下内容的部分或全部：发现中继指示，远端UE的标识、远端UE的类型，远端UE寻找的中继类型，远端UE的通信目标标识，远端UE的通信组标识，远端UE的优先级等。
步骤704，中继UE1接收到远端UE2发送发现中继的D2D信息，并根 据消息内容判断UE2正在寻找中继UE，则UE1进入中继活动状态；
步骤705，中继UE1使用中继发现发送资源或从中继发现发送资源池随机选择资源向远端UE2发送中继响应D2D信息；
中继响应D2D信息可包括以下内容的部分或全部：中继标识、中继类型、中继服务小区标识，中继可用时段、中继所属组标识，中继移动状态指示、中继PLMN信息，中继禁止状态指示等。
步骤706，UE2收到中继UE1发送的中继响应D2D信息，UE2向中继UE1发送中继连接建立请求，中继UE1接收到远端UE2发送的中继连接建立请求，则中继UE1向远端UE2发送中继连接建立信息，UE2就接入到了中继UE1。
如果UE2同时收到多个中继UE发送的中继响应D2D信息，则UE2选择一个中继UE并向选中的中继UE发送中继连接建立请求。
UE2接入到中继UE1后，中继UE1后续可在中继通信接收资源池上接收UE2发送的D2D通信信息，使用中继通信发送资源或从中继通信发送资源池随机选择资源向远端UE2发送D2D通信信息。中继UE1还可接收已接入的UE发送的D2D发现信息，以及尚未接入的其他远端UE发送的连接建立请求信息以及发现中继UE的D2D信息。已接入中继UE1的远端UE(即已经与中继UE建立连接的D2D UE)发送的D2D发现信息包括以下信息的部分或全部：远端UE标识，远端UE的类型，远端UE的通信组标识等。寻找中继UE的远端UE发送发现中继的D2D信息包括的内容如步骤703中所述。
此外处于中继活动状态的UE1可使用中继发现发送资源或从中继发现发送资源池随机选择资源周期性的发送中继广播信息。中继广播信息可包括中继标识、中继类型、中继服务小区标识，中继可用时段、中继所属组标识，中继移动状态指示、中继PLMN信息，中继禁止状态指示等。
应用示例4
Officer A，B分别使用具备D2D功能的UE1，UE2。UE1处于有网络覆 盖状态，而UE2处于无网络覆盖。本示例描述中继UE从中继非活动状态进入中继活动状态的另一种流程。处于有网络覆盖的UE1有兴趣成为中继节点，为无覆盖的UE提供中继服务。如图8所示，包括以下步骤：
步骤801，基站选择UE1作为中继节点，则基站向UE1发送设备直通中继配置信息，UE1收到中继配置信息后，如果配置信息指示使能中继节电，则UE1进入中继非活动状态；
步骤802，中继UE1在中继发现接收资源池上接收远端UE发送发现中继的D2D信息；
在非中继发现接收资源池对应的子帧上，UE1无需监听对应的子帧。此外中继UE1还可根据中继配置信息包含的中继非活动状态监听周期，监听帧/子帧偏移，监听持续时长等信息监听中继发现接收资源池上远端UE发送发现中继的D2D信息。
步骤803，远端UE2发送发现中继的D2D信息；
此时处于无覆盖状态的UE2希望找到中继UE连接到网络传输信息，则UE2首先监听中继发现接收资源池，判断附近是否有中继UE发送的D2D中继广播信息。如果能接收到中继UE发送的D2D中继广播信息，则远端UE2选择一个中继UE，并向选中的中继UE发送中继连接建立请求。假设UE2此时接收不到中继UE发送的D2D中继广播信息，则远端UE2发送发现中继的D2D信息。
远端UE2发送的发现中继的D2D信息包括以下内容的部分或全部：寻找中继指示，远端UE的标识、远端UE的类型，远端UE寻找的中继类型，远端UE的通信目标标识，远端UE的通信组标识，远端UE的优先级等。
步骤804，中继UE1接收到远端UE2发送发现中继的D2D信息，并根据消息内容判断UE2正在寻找中继UE，则中继UE1使用中继发现发送资源或从中继发现发送资源池随机选择资源向远端UE2发送中继响应D2D信息；
中继响应D2D信息可包括以下内容的部分或全部：中继标识、中继类型、中继服务小区标识，中继可用时段、中继所属组标识，中继移动状态指 示、中继PLMN信息，中继禁止状态指示等。
步骤805，UE2收到中继UE1发送的中继响应D2D信息，向中继UE1发送中继连接建立请求；
如果UE2同时收到多个中继UE发送的中继响应D2D信息，则UE2选择一个中继UE并向选中的中继UE发送中继连接建立请求。
步骤806，中继UE1接收到远端UE2发送的中继连接建立请求，则中继UE1向远端UE2发送中继连接建立信息；
步骤807，UE2接入到了中继UE1，中继UE1进入中继活动状态；
步骤808，中继UE1和远端UE2可以相互转发数据。
中继UE1后续可在中继通信接收资源池上接收UE2发送的D2D通信信息，使用中继通信发送资源或从中继通信发送资源池随机选择资源向远端UE2发送D2D通信信息。中继UE1还可接收已接入的UE发送的D2D发现信息，以及尚未接入的其他远端UE发送的连接建立请求信息以及发现中继的D2D信息。
此外处于中继活动状态的UE1可使用中继发现发送资源或从中继发现发送资源池随机选择资源周期性的发送D2D中继广播信息。D2D中继广播信息可包括以下内容的部分或全部：中继标识、中继类型、中继服务小区标识，中继可用时段、中继所属组标识，中继移动状态指示、中继PLMN信息，中继禁止状态指示等。
应用示例5
Officer A，B分别使用具备D2D功能的UE1，UE2。UE1处于有网络覆盖状态，而UE2处于无网络覆盖。本示例描述远端UE中继活动状态维护流程，假设基站选择UE1作为中继节点，并且中继UE1已进入中继活动状态。如图9所示，包括以下步骤：
步骤901，处于中继活动状态的UE1可使用中继发现发送资源或从中继发现发送资源池随机选择资源周期性的发送D2D中继广播信息。D2D中继广播信息可包括中继标识、中继类型、中继服务小区标识，中继可用时段、 中继所属组标识，中继移动状态指示、中继PLMN信息，中继禁止状态指示等。此时处于无覆盖状态的UE2希望找到中继UE连接到网络传输信息，则UE2首先监听中继发现接收资源池，判断附近是否有中继UE发送的D2D中继广播信息，此时UE2接收到中继UE1发送的D2D中继广播信息，则远端UE2向中继UE1发送中继连接建立请求。中继UE1接收到远端UE2发送的中继连接建立请求，则中继UE1向远端UE2发送中继连接建立信息与UE2建立连接；
步骤902，UE1在UE2接入时，启动对应于远端UE2的活动状态定时器；
步骤903，中继UE1判断是否有以下事件任意之一发生，如果有，执行步骤904，否则执行步骤907：在中继通信接收资源池上接收到远端UE2发送的D2D通信信息；使用中继通信发送资源或从中继通信发送资源池随机选择资源向远端UE2发送D2D通信信息；接收到远端UE2发送的D2D发现信息。
步骤904，判断接收到的消息是否为远端UE2发送的连接释放请求信息，如果是，执行步骤906，否则执行步骤905；
步骤905，中继UE1重启远端UE2的活动状态定时器，返回步骤903；
中继UE1接收到远端UE2发送的D2D通信信息，或者中继UE1向远端UE2发送了D2D通信信息，或者中继UE1接收到远端UE2发送的D2D发现信息，均会触发中继UE1重启远端UE2活动状态定时器。
步骤906，如果UE1收到UE2发送的连接释放请求信息，则UE1向UE2发送连接释放信息，执行步骤8；
步骤907，判断远端UE2活动状态定时器是否超时，如果是，执行步骤908，否则返回步骤903；
步骤908，UE1释放与远端UE2的连接及保存的UE2的上下文。
此外，中继UE1可在远端UE2的活动状态定时器超时时，向远端UE2发送发现远端UE2的D2D信息或是寻呼信息，如果在预定时间内接收不到远端UE2发送的响应信息，则所述中继UE1释放与远端UE2的连接。
应用示例6
Officer A，B，C分别使用具备D2D功能的UE1，UE2，UE3。UE1处于有网络覆盖状态，而UE2，UE3处于无网络覆盖。本示例描述中继UE从中继活动状态到中继非活动状态的流程，在本实例中，中继UE1为每个远端UE设置一个活动状态定时器，如图10所示，包括以下步骤：
步骤1001，基站选择UE1作为中继节点，使能了中继节电，中继UE1已进入中继活动状态；
步骤1002，此时处于无覆盖状态的UE2和UE3均已接入中继UE1，中继UE1在UE2和UE3接入时，分别启动对应于UE2和UE3的活动状态定时器；
步骤1003，中继UE1可利用示例5中的方法(示例5中步骤903-907)判断是否需要释放与UE2的连接，以及判断是否需要释放与UE3的连接，如果是，执行步骤1004，否则返回本步骤；
步骤1004，中继UE1陆续释放了与UE2和UE3的连接，UE1进入中继非活动状态。
应用示例7
Officer A，B，C分别使用具备D2D功能的UE1，UE2，UE3。UE1处于有网络覆盖状态，而UE2和UE3处于无网络覆盖。本示例描述中继UE从中继活动状态到中继非活动状态的流程，在本示例中，中继UE1维护一个自身的中继活动状态定时器，如图11所示，包括以下步骤：
步骤1101，基站选择UE1作为中继节点，向其发送中继配置信息，UE1收到中继配置信息后，如果配置信息指示激活中继功能并且使能中继节电，则UE1进入中继非活动状态；
步骤1102，中继UE1在中继发现接收资源池上监听远端UE发送的D2D发现信息，中继UE1接收到远端UE2发送的D2D发现信息，并根据消息内容判断UE2正在寻找中继UE，则UE1进入中继活动状态，同时启动中继活 动状态定时器；
步骤1103，中继UE1与远端UE2以及UE3建立连接并为其转发数据，中继UE1判断是否有以下事件任意之一发生，如果是，执行步骤1104，否则执行步骤1105：中继UE1在中继通信接收资源池上接收到UE2或UE3发送的D2D通信信息；中继UE1使用中继通信发送资源或从中继通信发送资源池随机选择资源向远端UE2或UE3发送D2D通信信息；中继UE1接收到UE2或UE3发送的D2D发现信息；
步骤1104，中继UE1重启中继活动状态定时器，返回步骤1103；
步骤1105，中继UE1判断其维护的中继活动状态定时器是否超时，如果是，执行步骤1106，否则返回步骤1103；
步骤1106，中继UE1再次进入中继非活动状态，仅在中继发现接收资源池上监听远端UE发送的寻找中继UE的D2D发现信息。
应用示例8
Officer A，B分别使用具备D2D功能的UE1，UE2。UE1处于有网络覆盖状态，而UE2处于无网络覆盖。处于有网络覆盖的UE1有兴趣成为中继节点，为无覆盖的UE提供中继服务。UE1根据预配置的中继配置信息激活中继功能，并使能节电，此时UE1进入中继非活动状态，开始在中继发现接收资源池上接收远端UE发送的发现中继D2D信息。UE1可在进入中继非活动状态后，向UE1的服务基站发送中继状态指示，其中中继状态指示可进一步指示中继非活动状态。假设中继UE1接收到远端UE2发送的发现中继D2D信息，并根据消息内容判断UE2正在寻找中继UE，则UE1进入中继活动状态，类似的，UE1可在进入中继活动状态后，向UE1的服务基站发送中继状态指示，其中中继状态指示可进一步指示中继活动状态。当中继UE1不再作为中继节点时，UE1还可向UE1的服务基站发送中继状态指示，其中中继状态指示UE1不再作为中继节点。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中， 所述计算机程序在相应的硬件平台上(如***、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。
上述实施例中的装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
工业实用性
通过本发明实施例提出的方法和装置，具备中继能力的UE可以在没有远端用户接入时进入中继第二状态，当接收到远端用户寻找中继的请求之后进入中继第一状态，周期性的广播中继信息，通过这种方式实现中继UE中继状态的切换，当中继UE处于中继第二状态时可以达到节电的目的。

Claims (18)

  1. 一种设备直通***中继状态确定方法，包括：
    中继用户设备UE获取中继配置信息和/或接收设备到设备D2D信息，根据所述中继配置信息和/或D2D信息确定中继UE的中继状态。
  2. 根据权利要求1所述的方法，其中，
    所述中继UE获取中继配置信息，包括：
    所述中继UE接收基站发送的或者近距离服务功能发送的中继配置信息，或者所述中继UE获取自身预配置的中继配置信息；
    所述中继配置信息包括以下内容至少之一：中继发现资源或资源池信息，中继通信资源或资源池信息，中继功能的激活指示，中继功能的去激活指示，中继节电使能指示，中继节电禁止指示，中继活动状态定时器，远端UE活动状态定时器。
  3. 根据权利要求2所述的方法，其中，
    所述中继发现资源或资源池信息包括：中继发现发送资源或资源池，中继发现接收资源池；所述中继通信资源或资源池信息包括：中继通信发送资源或资源池，中继通信接收资源池。
  4. 根据权利要求3所述的方法，其中，
    所述中继发现发送资源或资源池包括以下内容至少之一：有覆盖D2D发现发送资源或资源池，无覆盖D2D发现发送资源池；所述中继发现接收资源池包括：有覆盖D2D发现接收资源池，以及无覆盖D2D发现接收资源池；其中：所述有覆盖D2D发现接收资源池包括中继UE服务小区的D2D发现发送资源池以及中继UE服务小区的邻区对应的D2D发现发送资源池。
  5. 根据权利要求2所述的方法，其中，
    所述中继配置信息还包括以下内容的一种或多种：中继第一状态监听周期、监听帧偏移、监听子帧偏移、监听持续时长。
  6. 根据权利要求1所述的方法，其中，
    所述中继UE根据中继配置信息确定中继UE的中继状态，包括：
    所述中继配置信息包括：中继功能激活指示，所述中继UE执行中继功能；或者
    所述中继配置信息包括：中继功能去激活指示，所述中继UE不再执行中继功能；或者
    所述中继配置信息包括：中继节电使能指示，所述中继UE根据所述中继配置信息进入中继第一状态；或者
    所述中继配置信息包括：中继节电禁止指示，所述中继UE根据所述中继配置信息进入中继第二状态。
  7. 根据权利要求1所述的方法，其中，
    所述中继UE根据所述中继配置信息和/或D2D信息，确定中继UE的中继状态，包括：
    所述中继UE接收到远端UE发送的发现中继的D2D信息后进入中继第二状态；或者，
    所述中继UE接收到远端UE发送的发现中继的D2D信息后，与所述远端UE进行交互，在与所述远端UE建立连接后，进入中继第二状态。
  8. 根据权利要求7所述的方法，其中，
    所述中继UE接收到远端UE发送的发现中继的D2D信息后，与所述远端UE进行交互，在与所述远端UE建立连接后，进入中继第二状态，包括：
    所述中继UE接收到远端UE发送的发现中继的D2D信息后，向所述远端UE发送发现中继响应D2D信息，在收到所述远端UE发送的中继连接建立请求后，向所述远端UE发送中继连接建立信息，所述中继UE进入中继第二状态。
  9. 根据权利要求1所述的方法，其中，
    所述中继UE根据中继配置信息和D2D信息，确定中继UE的中继状态，包括：
    所述中继UE在进入中继第二状态时启动所述中继活动状态定时器，当所述中继活动状态定时器超时时，所述中继UE进入中继第一状态。
  10. 根据权利要求9所述的方法，其中，
    所述中继UE启动所述中继活动状态定时器后，所述方法还包括：
    在发生以下事件任意之一时，所述中继UE重启所述中继活动状态定时器：
    接收到已接入的任意一远端UE发送给所述中继UE的D2D通信信息；接收到已接入的任意一远端UE发送的D2D发现信息；所述中继UE向已接入的任意一远端UE发送D2D通信信息。
  11. 根据权利要求1所述的方法，其中，
    所述中继UE根据中继配置信息和D2D信息，确定中继UE的中继状态，包括：
    所述中继UE在远端UE接入时，为所述远端UE设置并启动对应的活动状态定时器；
    当所述远端UE的活动状态定时器超时时，所述中继UE释放与所述远端UE的连接；或者当所述远端UE的活动状态定时器超时时，所述中继UE向所述远端UE发送发现远端UE的D2D信息或是寻呼信息，如果在预定时间内接收不到所述远端UE发送的响应信息，则所述中继UE释放与所述远端UE的连接；
    当所述中继UE接收到已接入的远端UE发送的连接释放请求信息，则停止所述远端UE对应的活动状态定时器，释放与所述远端UE的连接；
    所述中继UE在释放所有已接入的远端UE的连接后进入中继第一状态。
  12. 根据权利要求11所述的方法，其中，
    所述中继UE为所述远端UE设置并启动对应的活动状态定时器后，所述方法还包括：
    在发生以下事件任意之一时，所述中继UE重启所述远端UE对应的活动状态定时器：
    接收到所述远端UE发送给中继UE的D2D通信信息；接收到所述远端UE发送的D2D发现信息；所述中继UE向所述远端UE发送D2D通信信息。
  13. 根据权利要求1所述的方法，其中，
    确定所述中继UE的中继状态为中继第一状态，所述方法还包括：处于中继第一状态的中继UE执行以下操作中的一种：
    接收远端UE发送的发现中继的D2D信息；
    接收到远端UE发送的发现中继的D2D信息，与所述远端UE进行交互，与所述远端UE建立连接。
  14. 根据权利要求1所述的方法，其中，
    确定所述中继UE的中继状态为中继第二状态，所述方法还包括：处于中继第二状态的中继UE执行以下操作中的一种或几种：
    周期性发送中继广播信息；
    接收尚未接入所述中继UE的远端UE发送的发现中继的D2D信息；
    接收已经接入所述中继UE的远端UE发送的D2D发现信息；
    接收已经接入所述中继UE的远端UE发送的D2D通信信息；
    向已经接入所述中继UE的远端UE发送D2D通信信息。
  15. 根据权利要求14所述的方法，
    所述方法还包括：尚未接入所述中继UE的远端UE接收到处于中继第二状态的中继UE发送的中继广播信息后，选择一个中继UE，向选中的中继UE发送中继连接建立请求，所述中继UE接收到所述中继连接建立请求后，向所述远端UE发送中继连接建立信息。
  16. 根据权利要求1所述的方法，其中，
    所述中继UE确定中继UE的中继状态后，所述方法还包括：所述中继UE向基站上报中继UE的中继状态。
  17. 一种设备直通***中继状态确定装置，位于中继用户设备UE，包括信息获取模块和状态确定模块，其中：
    所述信息获取模块，设置为：获取中继配置信息和/或接收设备到设备D2D信息；
    所述状态确定模块，设置为：根据所述中继配置信息和/或D2D信息确 定中继UE的中继状态。
  18. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行权利要求1-16任一项的方法。
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