WO2016026396A1 - 一种中继终端重选的方法及设备 - Google Patents

一种中继终端重选的方法及设备 Download PDF

Info

Publication number
WO2016026396A1
WO2016026396A1 PCT/CN2015/086537 CN2015086537W WO2016026396A1 WO 2016026396 A1 WO2016026396 A1 WO 2016026396A1 CN 2015086537 W CN2015086537 W CN 2015086537W WO 2016026396 A1 WO2016026396 A1 WO 2016026396A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
source
relay
relay terminal
target
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/086537
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
赵亚利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Academy of Telecommunications Technology CATT
Original Assignee
China Academy of Telecommunications Technology CATT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Priority to JP2017529128A priority Critical patent/JP6463477B2/ja
Priority to EP22178348.3A priority patent/EP4084528A1/en
Priority to US15/501,808 priority patent/US10326516B2/en
Priority to KR1020177007698A priority patent/KR20170047295A/ko
Priority to EP15834537.1A priority patent/EP3185612B1/en
Publication of WO2016026396A1 publication Critical patent/WO2016026396A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/247—Reselection being triggered by specific parameters by using coverage extension
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • 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
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks

Definitions

  • the present application relates to the field of mobile communications technologies, and in particular, to a method and device for reselecting a relay terminal.
  • a device-to-device refers to a method in which a neighboring terminal can transmit data through a direct link in a short range without using a central node (ie, a base station). Forwarding does not require information transmission between UEs (User Equipments) through traditional cellular links.
  • the D2D proximity service communication is performed under the control or assistance of the network side, and the eNB (evolved Node B) may even allocate resources dynamically for the UE performing the proximity service communication.
  • the D2D proximity service mechanism includes a Device to Device Discovery mechanism and a Device to Device Communication mechanism. Through the D2D discovery mechanism, the terminal discovers neighboring terminals; through the D2D communication mechanism, two UEs that are close to each other can directly establish a link between two UEs.
  • the UE can perform data transmission with the network or other UEs by selecting a relay (English: Relay).
  • a relay English: Relay
  • UE-to-Network Relay In order to communicate with the network, the source UE can select a neighboring in-network UE for its own data, so that the off-network UE and the network can be implemented by the in-network UE. Communication, the in-network UE is called UE-to-Network Relay. As shown in FIG. 1, UE2 outside the network coverage communicates with the network, and UE1 is used as a relay node to forward its own uplink and downlink signals through UE1. The communication between the UE1 and the UE2 is implemented by D2D communication, and the communication between the UE1 and the network is implemented by cellular communication.
  • UE-to-UE Relay If there is a certain distance between the source UE and the target UE, D2D discovery or D2D communication cannot be directly performed, and the third-party UE adjacent to both the source UE and the target UE is responsible for the data as the relay node. Transit, so that the two UEs implement D2D discovery or D2D communication, and the third-party UE is called UE-to-UE Relay. As shown in FIG. 2, UE2 can forward its own information through UE1 in order to communicate with UE4 that is not in its own direct communication range. UE1 and UE2, UE1 and UE4 implement data transmission through D2D communication.
  • the source UE and the target UE, as well as the relay UE, are all mobile. Therefore, regardless of the UE-to-UE relay or the UE-to-Network Relay, the source UE may encounter reselection as the source. UE and target UE The problem of Relay UE providing data transmission service, but no corresponding solution has been given for this problem.
  • the embodiment of the present invention provides a method and a device for reselecting a relay terminal, which are used to solve the problem of relaying UE reselection for a source UE.
  • the control node performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition, where the control node is the source terminal or the source relay terminal;
  • control node determines to perform relay terminal reselection, determining a candidate relay terminal list for the source terminal;
  • the control node determines a target relay terminal for the source terminal from the candidate relay terminal list according to the acquired auxiliary information.
  • the source terminal or the source relay terminal can reselect the relay terminal for the source terminal.
  • the candidate relay terminal list includes a terminal that is adjacent to the source terminal and the target terminal and is capable of providing a relay service.
  • the control node In order for the control node to select the UE-to-UE Relay as the target relay terminal for the source terminal from the list of candidate relay terminals.
  • the candidate relay terminal list is determined by the source terminal, or if the control node is a source relay terminal, the candidate relay terminal list is And being determined by the source terminal and fed back to the source relay terminal;
  • the source terminal determines a candidate relay terminal list, including:
  • the source terminal receives the discovery signal broadcast by the neighboring terminal, and if the discovery signal carries the identification information of the target terminal and the neighboring terminal can provide the source terminal with the indication information of the relay service, the proximity is Determining, by the terminal, a candidate relay terminal of the source terminal, and placing the identification information of the neighboring terminal into the candidate relay terminal list; wherein the neighboring terminal, after discovering the target terminal, The identification information of the terminal is carried in the discovery signal; or
  • the source terminal broadcasts a discovery signal, where the discovery signal carries identification information of the source terminal and the target terminal, and indication information that the source terminal needs to relay a service, if the source terminal receives a neighboring terminal And the discovery signal response information carries the indication information that the neighboring terminal can provide a relay service for the source terminal, and determines that the neighboring terminal is a candidate relay terminal of the source terminal, and The identification information of the neighboring terminal is placed in the candidate relay terminal list; wherein the neighboring terminal returns the discovery signal to the source terminal after discovering the terminal corresponding to the identifier information of the target terminal Response information.
  • the foregoing implementation process is applicable to the source terminal or the source relay terminal performing relay terminal weighting in the UE-to-UE relay scenario.
  • a list of candidate relay terminals is determined for the source terminal.
  • the candidate relay terminal list includes an on-net terminal adjacent to the source terminal and capable of providing a relay service.
  • the control node In order for the control node to select UE-to-Network Relay as the target relay terminal for the source terminal from the list of candidate relay terminals.
  • the candidate relay terminal list is determined by the source terminal, or if the control node is a source relay terminal, the candidate relay terminal list is After the source terminal determines and feeds back to the source relay terminal;
  • the source terminal determines a candidate relay terminal list, including:
  • the source terminal receives the discovery signal broadcast by the neighboring terminal, and if the discovery signal carries the indication information that the neighboring terminal can provide the relay service for the source terminal, determining the neighboring terminal as the source terminal a candidate relay terminal, and placing the identification information of the neighboring terminal into the candidate relay terminal list; or
  • the source terminal broadcasts a discovery signal, where the discovery signal carries the identification information of the source terminal and the indication information that the source terminal needs to relay the service, if the source terminal receives the discovery signal response information of the neighboring terminal and The discovery signal response information carries indication information that the neighboring terminal can provide a relay service for the source terminal, and then determines that the neighboring terminal is a candidate relay terminal of the source terminal, and the neighboring terminal is The identification information is placed in the candidate relay terminal list.
  • the foregoing implementation process is applicable to the source terminal or the source relay terminal determining a candidate relay terminal list for the source terminal when performing relay terminal reselection in the UE-to-Network Relay scenario.
  • the relay terminal reselection trigger condition includes at least one of the following conditions:
  • the first condition is that the channel quality or the signal receiving strength between the source terminal and the source relay terminal is less than a set threshold; or the transmission or retransmission between the source terminal and the source relay terminal reaches the preset maximum number of times and still transmits failure;
  • the second condition the channel quality or the signal receiving strength between the source relay terminal and the target node is less than a set threshold; or the transmission or retransmission between the source relay terminal and the target node reaches the preset maximum number of times and still transmits Failure; wherein the target node is a target terminal or a target network node;
  • the third condition according to the relay policy of the source relay terminal, the source relay terminal is no longer suitable as the relay terminal of the source terminal.
  • the control node performs the relay terminal reselection in the UE-to-UE relay scenario or the UE-to-Network Relay scenario, it determines that the source terminal is relayed when it satisfies at least one of the relay terminal reselection trigger conditions. Terminal reselection.
  • control node is the source terminal:
  • the first condition is included in the relay terminal reselection trigger condition, the first condition is measured by the source terminal, or is measured by the source relay terminal and fed back to the source Terminal
  • the relay terminal reselection trigger condition includes the second condition
  • the second condition is measured by the source relay terminal and fed back to the source terminal, or is measured by the target node And passing the feedback of the source relay terminal To the source terminal;
  • the third condition is determined by the source relay terminal and fed back to the source terminal.
  • the source terminal When the source terminal performs reselection of the relay terminal in the UE-to-UE relay scenario or the UE-to-network relay scenario, the source terminal obtains the manner in which the relay terminal reselection trigger condition is used.
  • control node is the source relay terminal:
  • the first condition is included in the relay terminal reselection trigger condition, the first condition is measured by the source terminal and fed back to the source relay terminal, or is relayed by the source Measured by the terminal;
  • the relay terminal reselection trigger condition includes the second condition
  • the second condition is measured by the source relay terminal, or is measured by the target node and fed back to the Source relay terminal
  • the third condition is determined by the source relay terminal.
  • the foregoing implementation process is a manner in which the source relay terminal obtains the relay terminal reselection trigger condition when the source relay terminal performs reselection of the relay terminal in the UE-to-UE relay scenario or the UE-to-network relay scenario.
  • auxiliary information includes at least one of the following information:
  • First auxiliary information channel quality or signal reception strength between the source terminal and the candidate relay terminal;
  • Second auxiliary information channel quality or signal reception strength between the candidate relay terminal and the target node; wherein the target node is a target terminal or a target network node;
  • Third auxiliary information a relay policy of the candidate relay terminal.
  • the control node performs the relay terminal reselection in the UE-to-UE relay scenario or the UE-to-Network Relay scenario
  • the obtained auxiliary information is used as the source from the candidate relay terminal list.
  • the terminal determines the target relay terminal.
  • control node is the source terminal:
  • the auxiliary information includes the first auxiliary information
  • the first auxiliary information is measured by the source terminal, or is measured by the candidate relay terminal and fed back to the source terminal;
  • the second auxiliary information is included in the auxiliary information, the second auxiliary information is measured by the candidate relay terminal or the target node and fed back to the source terminal;
  • the third auxiliary information is determined by the candidate relay terminal and fed back to the source terminal.
  • the foregoing implementation process is a manner in which the source terminal obtains the auxiliary information when the source terminal performs reselection of the relay terminal in the UE-to-UE relay scenario or the UE-to-network relay scenario.
  • control node is the source relay terminal:
  • the auxiliary information includes the first auxiliary information
  • the first auxiliary information is measured by the source terminal and fed back to the source relay terminal, or is measured by the candidate relay terminal. Feedback to the source through the source terminal Describe the source relay terminal;
  • the second auxiliary information is measured by the target node and fed back to the source relay terminal, or is measured by the candidate relay terminal. Feedback to the source relay terminal by the target node;
  • the third auxiliary information is determined by the candidate relay terminal and fed back to the source relay terminal by the source terminal or the target node.
  • the foregoing implementation process is a manner in which the source relay terminal obtains the auxiliary information when the source relay terminal performs reselection of the relay terminal in the UE-to-UE relay scenario or the UE-to-network relay scenario.
  • the method further includes:
  • the source terminal sends a connection release command to the source relay terminal and establishes a connection with the target relay terminal, where the connection release command is used to indicate that the source relay terminal is released between the source terminal and the source terminal.
  • the connection with the source relay terminal so that the source terminal and the target node establish a connection with the target relay terminal respectively in the subsequent steps.
  • the method further includes:
  • the source relay terminal sends a first connection release command to the source terminal, and sends a second connection release command to the target node, where the first connection release command is used to indicate that the source terminal is released and the source is Following the connection between the terminals, the second connection release command is used to indicate the connection between the target node and the source relay terminal; wherein the target node is a target terminal or a target network node.
  • the control node is the source relay terminal
  • the source terminal and the target node are respectively released to release the connection with the source relay terminal, so that the source terminal in the subsequent step Establish a connection with the target relay node and the target relay terminal.
  • connection release command carries the information of the target relay terminal
  • the target node further includes: establishing the target node and the location The connection between the target relay terminals is performed; when the control node is the source terminal, the source relay terminal is instructed to establish a connection between the target node and the target relay terminal.
  • the first connection release command and the second connection release command both carry the letter of the target relay terminal
  • the source terminal and the target node further include: establishing a connection between the target node and the target relay terminal.
  • the source relay terminal instructs the target node to establish a connection with the target relay terminal.
  • control node determines, after performing the relay terminal reselection, the method further includes:
  • the source terminal sends a notification message to the target node by using the source relay terminal, where the notification message is used to notify the target node to stop data transmission to the source terminal, where the target node is a target terminal. Or the target network node; or
  • the method further includes:
  • the source relay terminal sends a first notification message to the source terminal, and sends a second notification message to the target node, where the first notification message is used to notify the source terminal to stop sending data to the target node.
  • the second notification message is used to notify the target node to stop sending data to the source terminal, where the target node is a target terminal or a target network node.
  • the foregoing implementation process causes the control node to notify the source terminal or the target node to stop data transmission when determining that the relay terminal is reselected, so as to minimize data loss between the source terminal and the target node in the relay terminal reselection process.
  • control node device is the source terminal or the source relay terminal, and includes:
  • a decision module configured to perform a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition
  • a first determining module if it is determined that the relay terminal reselection is performed, determining, by the source terminal, a candidate relay terminal list;
  • the second determining module determines, from the candidate relay terminal list, the target relay terminal for the source terminal according to the obtained auxiliary information.
  • the source terminal or the source relay terminal can reselect the relay terminal for the source terminal.
  • the candidate relay terminal list includes a terminal that is adjacent to the source terminal and the target terminal and is capable of providing a relay service.
  • the control node device In order for the control node device to select the UE-to-UE Relay as the target relay terminal for the source terminal from the list of candidate relay terminals.
  • the first determining module is specifically configured to:
  • the control node device When the control node device is the source terminal, receiving a discovery signal broadcast by the neighboring terminal, if the discovery signal carries the identification information of the target terminal, and the neighboring terminal can provide a relay service for the source terminal. Instructing the neighboring terminal to determine the candidate relay terminal of the source terminal, and placing the identification information of the neighboring terminal into the candidate relay terminal list; wherein the neighboring terminal is at the discovery terminal Carrying the identification information of the target terminal on the discovery signal after the target terminal; or
  • the control node device When the control node device is the source terminal, broadcasting a discovery signal, where the discovery signal carries the source end And the identification information of the target terminal and the indication information that the source terminal needs to relay the service, if the source terminal receives the discovery signal response information of the neighboring terminal, and the discovery signal response information carries the neighboring terminal And determining, by the source terminal, the indication information of the relay service, determining that the neighboring terminal is a candidate relay terminal of the source terminal, and placing the identifier information of the neighboring terminal into the candidate relay terminal list.
  • the neighboring terminal returns the discovery signal response information to the source terminal after discovering the terminal corresponding to the identification information of the target terminal; or
  • control node device When the control node device is the source relay terminal, receiving a list of candidate relay terminals determined and fed back by the source terminal.
  • the foregoing implementation process is applicable to the source terminal or the source relay terminal determining a candidate relay terminal list for the source terminal when performing relay terminal reselection in the UE-to-UE relay scenario.
  • the candidate relay terminal list includes an on-net terminal adjacent to the source terminal and capable of providing a relay service.
  • the control node device In order for the control node device to select the UE-to-Network Relay as the target relay terminal for the source terminal from the list of candidate relay terminals.
  • the first determining module is specifically configured to:
  • the control node device When the control node device is the source terminal, receiving a discovery signal broadcast by a neighboring terminal, if the discovery signal carries the indication information that the neighboring terminal can provide a relay service for the source terminal, Determining, by the neighboring terminal, a candidate relay terminal of the source terminal, and placing the identification information of the neighboring terminal into the candidate relay terminal list; or
  • the control node device is the source terminal, broadcasting a discovery signal, where the discovery signal carries identifier information of the source terminal and indication information that the source terminal needs to relay a service, if the source terminal receives Determining the signal response information to the neighboring terminal, and the discovery signal response information carries the indication information that the neighboring terminal can provide the relay service for the source terminal, determining that the neighboring terminal is a candidate for the source terminal Relaying the terminal and placing the identification information of the neighboring terminal into the candidate relay terminal list; or
  • control node device is the source relay terminal, receiving a candidate relay terminal list determined and fed back by the source terminal.
  • the foregoing implementation process is applicable to the source terminal or the source relay terminal determining a candidate relay terminal list for the source terminal when performing relay terminal reselection in the UE-to-Network Relay scenario.
  • the relay terminal reselection trigger condition includes at least one of the following conditions:
  • the first condition is that the channel quality or the signal receiving strength between the source terminal and the source relay terminal is less than a set threshold; or the transmission or retransmission between the source terminal and the source relay terminal reaches the preset maximum number of times and still transmits failure;
  • the second condition the channel quality or the signal receiving strength between the source relay terminal and the target node is less than a set threshold; or the transmission or retransmission between the source relay terminal and the target node reaches the preset maximum number of times and still transmits Failure; wherein the target node is a target terminal or a target network node;
  • the third condition according to the relay policy of the source relay terminal, the source relay terminal is no longer suitable as the relay terminal of the source terminal.
  • the control node device performs reselection of the relay terminal in the UE-to-UE relay scenario or the UE-to-Network Relay scenario, it is determined that the source terminal is in progress when at least one of the relay terminal reselection trigger conditions is met. Following the terminal reselection.
  • control node device is the source terminal
  • the first condition is included in the relay terminal reselection trigger condition, the first condition is measured by the source terminal, or is measured by the source relay terminal and fed back to the source Terminal
  • the relay terminal reselection trigger condition includes the second condition
  • the second condition is measured by the source relay terminal and fed back to the source terminal, or is measured by the target node And feeding back to the source terminal by the source relay terminal;
  • the third condition is determined by the source relay terminal and fed back to the source terminal.
  • the source terminal When the source terminal performs reselection of the relay terminal in the UE-to-UE relay scenario or the UE-to-network relay scenario, the source terminal obtains the manner in which the relay terminal reselection trigger condition is used.
  • control node device is the source relay terminal
  • the first condition is included in the relay terminal reselection trigger condition, the first condition is measured by the source terminal and fed back to the source relay terminal, or is relayed by the source Measured by the terminal;
  • the relay terminal reselection trigger condition includes the second condition
  • the second condition is measured by the source relay terminal, or is measured by the target node and fed back to the Source relay terminal
  • the third condition is determined by the source relay terminal.
  • the foregoing implementation process is a manner in which the source relay terminal obtains the relay terminal reselection trigger condition when the source relay terminal performs reselection of the relay terminal in the UE-to-UE relay scenario or the UE-to-network relay scenario.
  • auxiliary information includes at least one of the following information:
  • First auxiliary information channel quality or signal reception strength between the source terminal and the candidate relay terminal;
  • Second auxiliary information channel quality or signal reception strength between the candidate relay terminal and the target node, wherein the target node is a target terminal or a target network node;
  • Third auxiliary information a relay policy of the candidate relay terminal.
  • the control node performs the relay terminal reselection in the UE-to-UE relay scenario or the UE-to-Network Relay scenario
  • the obtained auxiliary information is used as the source from the candidate relay terminal list.
  • the terminal determines the target relay terminal.
  • control node device is the source terminal:
  • the auxiliary information includes the first auxiliary information
  • the first auxiliary information is measured by the source terminal, or is measured by the candidate relay terminal and fed back to the source terminal;
  • the second auxiliary information is included in the auxiliary information, the second auxiliary information is measured by the candidate relay terminal or the target node and fed back to the source terminal;
  • the third auxiliary information is determined by the candidate relay terminal and fed back to the source terminal.
  • the foregoing implementation process is a manner in which the source terminal obtains the auxiliary information when the source terminal performs reselection of the relay terminal in the UE-to-UE relay scenario or the UE-to-network relay scenario.
  • control node device is the source relay terminal:
  • the auxiliary information includes the first auxiliary information
  • the first auxiliary information is measured by the source terminal and fed back to the source relay terminal, or is measured by the candidate relay terminal. Feedback to the source relay terminal by the source terminal;
  • the second auxiliary information is measured by the target node and fed back to the source relay terminal, or is measured by the candidate relay terminal. Feedback to the source relay terminal by the target node;
  • the third auxiliary information is determined by the candidate relay terminal and fed back to the source relay terminal by the source terminal or the target node.
  • the foregoing implementation process is a manner in which the source relay terminal obtains the auxiliary information when the source relay terminal performs reselection of the relay terminal in the UE-to-UE relay scenario or the UE-to-network relay scenario.
  • control node device further includes a sending module
  • the sending module is configured to: when the control node device is a source terminal, send a connection release command to the source relay terminal and establish a connection with the target relay terminal, where the connection release command is in the second Determining that the module is sent after determining the target relay terminal for the source terminal, wherein the connection release command is used to instruct the source relay terminal to release a connection with the source terminal, and indicate the source relay Notifying the target node to release a connection with the source relay terminal, where the target node is a target terminal or a target network node;
  • the foregoing implementation process is such that the control node device is a source terminal, after the source terminal determines the target relay terminal, the source terminal establishes a connection with the target relay terminal, and the source terminal indicates that the source relay terminal releases the connection with the source terminal, and The source relay terminal instructs the target node to release the connection with the source relay terminal, so that the source terminal and the target node respectively establish a connection with the target relay terminal in the subsequent step. or,
  • the sending module is configured to: when the control node device is a source relay terminal, send a first connection release command to the source terminal, and send a second connection release command to the target node, where the first connection is Release command and the second connection release command are sent after the second determining module determines a target relay terminal for the source terminal, the first connection release command is used to indicate the source terminal release and the a connection between the source relay terminals, the second connection release command is used to indicate that the target node releases the connection with the source relay terminal; the target node is a target terminal or a target network node.
  • the foregoing implementation process makes the control node device be the source relay terminal, and the source relay terminal determines the target relay terminal. Thereafter, the source terminal and the target node are instructed to release the connection with the source relay terminal, respectively, so that the source terminal and the target node respectively establish a connection with the target relay terminal in the subsequent step.
  • a notification module is further included;
  • the notification module is specifically configured to: when the control node is a source terminal, send a notification message to the target node, where the notification message is sent after the determining module determines to perform relay mid-end reselection, The notification message is used to notify the target node to stop data transmission to the source terminal, where the target node is a target terminal or a target network node; or
  • the control node is the source relay terminal
  • the first notification message is sent to the source terminal
  • the second notification message is sent to the target node
  • the first notification message and the second notification message are
  • the determining module determines that the relaying is performed after performing the intermediate reselection, the first notification message is used to notify the source terminal to stop sending data to the target node, and the second notification message is used to notify the target.
  • the node stops transmitting data to the source terminal, and the target node is a target terminal or a target network node.
  • the embodiment of the present application further provides a terminal, where the terminal is a source terminal or a source relay terminal, and includes:
  • transceiver for receiving and transmitting data under the control of a processor
  • a memory that holds the data used by the processor to perform operations.
  • the source terminal or the source relay terminal can reselect the relay terminal for the source terminal.
  • the foregoing implementation process causes the control node device to notify the source terminal or the target node to stop data transmission when determining to perform relay terminal reselection, so as to minimize data loss between the source terminal and the target node in the relay terminal reselection process.
  • the control node performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition, and if the control node determines to perform the relay terminal reselection, the source terminal determines the candidate relay terminal list, and Determining a target relay terminal for the source terminal from the candidate relay terminal list according to the auxiliary information, where the control node is the source terminal or the source relay terminal, so that the source terminal, the target node, and the source relay terminal are in the process of moving When the terminal is no longer suitable as a relay terminal, the source terminal or the source relay terminal can reselect the relay terminal for the source terminal.
  • FIG. 1 is a schematic diagram of implementing D2D discovery or D2D communication between terminals by using UE-to-Network Relay in the prior art
  • FIG. 2 is a schematic diagram of implementing D2D discovery or D2D communication between terminals by using UE-to-UE relay in the prior art
  • FIG. 3 is a schematic flowchart of a method for reselecting a relay terminal according to Embodiment 1 of the present application;
  • FIG. 4 is a schematic flowchart of a method for reselecting a relay terminal according to Embodiment 2 of the present application;
  • FIG. 5 is a schematic flowchart of a method for reselecting a relay terminal according to Embodiment 3 of the present application;
  • FIG. 6 is a schematic flowchart of a method for reselecting a relay terminal according to Embodiment 4 of the present application.
  • FIG. 7 is a schematic flowchart of a method for reselecting a relay terminal according to Embodiment 5 of the present application.
  • FIG. 8 is a schematic structural diagram of a control node device according to Embodiment 6 of the present application.
  • FIG. 9 is a schematic structural diagram of a terminal according to Embodiment 7 of the present application.
  • a method for reselecting a relay terminal includes the following steps:
  • Step 301 The control node performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition, where the control node is a source terminal or a source relay terminal.
  • Step 302 If the control node determines to perform relay terminal reselection, determining a candidate relay terminal list for the source terminal;
  • Step 303 The control node determines a target relay terminal for the source terminal from the candidate relay terminal list according to the obtained auxiliary information.
  • the above procedure can be applied to the UE-to-Network Relay scenario, and can also be applied to the UE-to-UE relay scenario.
  • the candidate relay terminal in the candidate relay terminal list in step 302 is a UE-to-UE relay, that is, adjacent to the source terminal and the target terminal, and capable of providing a relay service. Terminal.
  • the candidate relay terminal in the candidate relay terminal list in step 302 is a UE-to-Network Relay, that is, an in-network terminal that is adjacent to the source terminal and can provide a relay service.
  • the terminology in the network refers to a terminal that is within the coverage of the network and directly communicates with the network.
  • Scenario 1 The control node is the source terminal, and performs relay terminal reselection in the UE-to-UE relay scenario.
  • Scenario 2 The control node is the source terminal, and performs relay terminal reselection in the UE-to-Network Relay scenario.
  • the control node is a source relay terminal, and performs relay terminal reselection in a UE-to-UE relay scenario.
  • Scenario 4 The control node is the source relay terminal, and performs relay terminal reselection in the UE-to-Network Relay scenario.
  • Embodiment 2 describes a relay terminal reselection procedure for the above scenario 1. As shown in Figure 4, the specific steps of the process are as follows:
  • Step 401 The source terminal performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition.
  • the relay terminal reselection trigger condition includes at least one of the following conditions:
  • the first condition is that the channel quality or the signal receiving strength between the source terminal and the source relay terminal is less than a set threshold; or the transmission or retransmission between the source terminal and the source relay terminal reaches the preset maximum number of times and still transmits failure;
  • the second condition is that the channel quality or the signal receiving strength between the source relay terminal and the target terminal is less than a set threshold; or the transmission or retransmission times between the source relay terminal and the target terminal reaches a preset maximum number of times and still transmits failure;
  • the third condition according to the relay policy of the source relay terminal, the source relay terminal is no longer suitable as the relay terminal of the source terminal.
  • the relay policy of the source relay terminal includes one or more combinations of the following: whether the source relay terminal acquires the authorization information of the UE-to-UE relay, and whether the power of the source relay terminal is suitable. Provide relay service, whether the load of the source relay terminal is suitable for providing relay service, whether the source relay terminal has the willingness to provide relay service, between the source relay terminal and the source terminal, and between the source relay terminal and the target terminal Whether the relative speed of the transmitted data or the link interference condition is suitable as a relay terminal or the like.
  • the first condition is measured by the source terminal, or is measured by the source relay terminal and fed back to the source terminal. That is, the channel quality or signal reception strength between the source terminal and the source relay terminal involved in the first condition, or the number of transmission or retransmission between the source terminal and the source relay terminal is measured by the source terminal. Or it is measured by the source relay terminal and fed back to the source terminal.
  • the second condition is included in the relay terminal reselection trigger condition, the second condition is measured by the source relay terminal and fed back to the source terminal, or is measured by the target node and fed back to the source terminal through the source relay terminal. That is, the channel quality or signal reception strength between the source relay terminal and the target terminal involved in the second condition, or the number of transmission or retransmission between the source relay terminal and the target terminal is measured by the source relay terminal. And feedback to the source terminal, or is measured by the target terminal and then fed back to the source terminal by the source relay terminal.
  • the third condition is included in the relay terminal reselection trigger condition, the third condition is determined by the source relay terminal and fed back to the source terminal. That is to say, the relay policy involved in the third condition is determined by the source relay terminal and then fed back to the source terminal.
  • the source relay terminal may feed back the measured or received measurement result or the relay policy to the source terminal according to the request of the source terminal, or may determine that the relay terminal reselects the relay terminal at the source relay terminal. After the condition, the measured or received measurement result or the relaying strategy is actively fed back to the source terminal.
  • Steps 402a to 402b if the source terminal determines to perform relay terminal reselection, the source terminal sends a notification message to the target terminal through the source relay terminal, and the notification message is used to notify the target terminal to stop data transmission to the source terminal. Minimize data loss between the source terminal and the target terminal during relay terminal reselection. Specifically, as shown in FIG. 4,
  • Step 402a If the source terminal determines to perform reselection of the relay terminal, the source terminal sends a notification message to the source relay terminal, so that the source relay terminal notifies the target terminal to stop transmitting data to the source terminal.
  • Step 402b The source relay terminal sends a notification message to the target terminal to notify the target terminal to stop data transmission to the source terminal.
  • Step 403 If the source terminal determines to perform relay terminal reselection, determining a candidate relay terminal list for the source terminal, where the candidate relay terminal in the candidate relay list is adjacent to the source terminal and the target terminal and can provide a relay service. ;
  • the candidate relay terminal list in step 403 is determined by the source terminal, and the determination manner is as follows:
  • the source terminal receives the discovery signal broadcast by the neighboring terminal. If the discovery signal carries the identification information of the target terminal and the neighboring terminal can provide the indication information of the relay service for the source terminal, the neighboring terminal is determined as the candidate relay of the source terminal. The terminal puts the identification information of the neighboring terminal into the candidate relay terminal list. The neighboring terminal carries the identification information of the target terminal to the discovery signal after discovering the target terminal.
  • the indication information that the neighboring terminal carried in the signal can provide the relay service to the source terminal is that the neighboring terminal can provide the relay service as the source terminal of the UE-to-UE relay.
  • the discovery signal broadcasted by the neighboring terminal carries at least the identification information of the discovered target terminal, in addition to the identification information of the neighboring terminal itself.
  • the indication information of whether the neighboring terminal can provide the relay service for the source terminal is determined according to the relay policy of the neighboring terminal, for example, whether the neighboring terminal obtains the authorization information of the UE-to-UE relay, and whether the power of the neighboring terminal is suitable for providing Following the service, whether the load of the neighboring terminal is suitable for providing the relay service, whether the neighboring terminal has the willingness to provide the relay service, the relative speed or link interference of the data transmitted between the neighboring terminal and the source terminal, and between the neighboring terminal and the target terminal.
  • the relay strategy of the neighboring terminal includes one or a combination of the above examples.
  • the source terminal broadcasts the discovery signal, and the discovery signal carries the identification information of the active terminal and the target terminal, and the indication information that the source terminal needs the relay service, if the source terminal receives the discovery signal response information of the neighboring terminal and finds the signal response information. And carrying the indication information that the neighboring terminal can provide the relay service to the source terminal, determining that the neighboring terminal is the candidate relay terminal of the source terminal, and placing the identification information of the neighboring terminal into the candidate relay terminal list; wherein, the neighboring terminal After discovering the terminal corresponding to the identification information of the target terminal, the discovery signal response information is returned to the source terminal.
  • the indication information that the source terminal that is carried in the signal needs the relay service is the indication that the source terminal needs the UE-to-UE relay to provide the relay service.
  • the indication information that the neighboring terminal carried in the signal response information can provide the relay service to the source terminal is the indication that the neighboring terminal can provide the relay service as the source terminal of the UE-to-UE relay.
  • the source terminal first adopts the D2D discovery mechanism to receive the discovery signal response information sent by the neighboring terminal, if the neighboring The near terminal is not only adjacent to the source terminal and the target terminal, but also the neighboring terminal can provide the providing relay service, and the neighboring terminal is used as the candidate relay terminal.
  • the neighboring terminal After the neighboring terminal finds the terminal corresponding to the identification information of the target terminal, it determines whether the source terminal and the discovered target terminal can be the source terminal according to the identification information of the source terminal in the discovery signal received from the source terminal and according to its own relay policy. Provide relay service.
  • the relay policy of the neighboring terminal in the second mode refer to the relay policy of the neighboring terminal in the first mode, which is not described here.
  • Step 404 The source terminal determines, according to the obtained auxiliary information, a target relay terminal from the candidate relay terminal list for the source terminal.
  • the auxiliary information in step 404 includes at least one of the following information:
  • First auxiliary information channel quality or signal reception strength between the source terminal and the candidate relay terminal; second auxiliary information: channel quality or signal reception strength between the candidate relay terminal and the target terminal; third auxiliary information: candidate Relay policy of the relay terminal.
  • the relay policy of the candidate relay terminal includes one or more combinations of the following: whether the candidate relay terminal acquires the authorization information of the UE-to-UE relay, and whether the power of the candidate relay terminal is suitable for providing Relay service, whether the load of the candidate relay terminal is suitable for providing a relay service, whether the candidate relay terminal has a willingness to provide a relay service, between the candidate relay terminal and the source terminal, and between the candidate relay terminal and the target terminal Whether the relative speed of the transmitted data or the link interference condition is suitable as a relay terminal or the like.
  • the method for obtaining the auxiliary information in step 404 is:
  • the auxiliary information includes the first auxiliary information
  • the first auxiliary information is measured by the source terminal, or is measured by the candidate relay terminal and fed back to the source terminal;
  • the second auxiliary information is measured by the candidate relay terminal or the target terminal and fed back to the source terminal;
  • the third auxiliary information is determined by the candidate relay terminal and fed back to the source terminal.
  • the auxiliary information is the information measured or received by the source terminal, and the source terminal acquires the auxiliary information of the candidate relay terminal in the candidate relay terminal list after determining that the relay terminal reselection is performed, and obtains the auxiliary information.
  • the auxiliary information may be measured by the source terminal, or may be obtained by the source terminal requesting the neighboring node to perform feedback, and the node adjacent to the source terminal includes the candidate relay terminal and the target terminal.
  • Step 405a to step 405b the source terminal sends a connection release command to the source relay terminal, instructing the source relay terminal to release the connection with the source terminal, and instructing the source relay terminal to notify the target terminal to release the source terminal terminal. connection;
  • the source terminal sends a connection release command to the source relay terminal, indicating that the source relay terminal releases the connection with the source terminal; and the source relay terminal releases the connection with the source terminal, which refers to the source relay.
  • the terminal releases the RRC (Radio Resource Control), the PDCP (Packet Data Convergence Protocol), the RLC (Radio Link Control), and the MAC (Media) related to the source terminal.
  • Configuration information such as Access Control, Media Access Control Layer, and PHY (Physical Layer).
  • the source relay terminal notifies the target terminal to release the connection with the source relay terminal.
  • the connection between the target terminal and the source relay terminal means that the target terminal releases configuration information such as RRC, PDCP, RLC, MAC, and PHY related to the source terminal and the source terminal.
  • Step 406a The source terminal establishes a connection with the target relay terminal.
  • Step 406b After receiving the notification of the source relay terminal, the target terminal establishes a connection with the target relay terminal, where the connection release command received by the source relay terminal in step 405a carries the target relay terminal. information.
  • the source terminal establishes a connection with the target relay terminal and establishes a connection between the target terminal and the target relay terminal, and the source terminal or the target terminal establishes an IP (Internet Protocol) connection with the target relay terminal and completes Related configurations of low-level RRC, PDCP, RLC, MAC, and PHY.
  • IP Internet Protocol
  • Step 407 The target relay terminal provides a data transmission service for the source terminal and the target terminal, so that the source terminal and the target terminal directly communicate.
  • the source terminal performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition. If the source terminal determines to perform relay terminal reselection, the source terminal determines a candidate relay terminal list, and the source terminal is configured according to the source terminal. The auxiliary information determines the target relay terminal for the source terminal from the candidate relay terminal list, so that the source terminal, the target terminal, and the source relay terminal are no longer suitable as the relay terminal in the process of moving, and the source terminal can Reselect the target relay terminal for the source terminal.
  • Embodiment 3 describes a relay terminal reselection procedure for the above scenario 2. As shown in Figure 5, the specific steps of the process are as follows:
  • Step 501 The source terminal performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition.
  • the relay terminal reselection trigger condition includes at least one of the following conditions:
  • the first condition is that the channel quality or the signal receiving strength between the source terminal and the source relay terminal is less than a set threshold; or the transmission or retransmission between the source terminal and the source relay terminal reaches the preset maximum number of times and still transmits failure;
  • the second condition the channel quality or the signal receiving strength between the source relay terminal and the target network node is less than a set threshold; or the number of transmissions or retransmissions between the source relay terminal and the target network node reaches a preset maximum number of times Still failed to transfer;
  • the third condition according to the relay policy of the source relay terminal, the source relay terminal is no longer suitable as the relay terminal of the source terminal.
  • the relay policy of the source relay terminal includes one or more combinations of the following: whether the source relay terminal acquires the authorization information of the UE-to-Network Relay, and whether the power of the source relay terminal is suitable for providing Relay service, whether the load of the source relay terminal is suitable for providing relay service, whether the source relay terminal has the willingness to provide relay service, between the source relay terminal and the source terminal, and between the source relay terminal and the target network node Whether the relative speed of the transmitted data or the link interference condition is suitable as a relay terminal or the like.
  • the first condition is measured by the source terminal, or is measured by the source relay terminal and fed back to the source terminal. That is, the channel quality or signal reception strength between the source terminal and the source relay terminal involved in the first condition, or the number of transmission or retransmission between the source terminal and the source relay terminal is measured by the source terminal. Or it is measured by the source relay terminal and fed back to the source terminal.
  • the second condition is included in the relay terminal reselection trigger condition, the second condition is measured by the source relay terminal and fed back to the source terminal, or is measured by the target node and fed back to the source terminal through the source relay terminal. That is, the channel quality or signal reception strength between the source relay terminal and the target terminal involved in the second condition, or the number of transmission or retransmission between the source relay terminal and the target terminal is measured by the source relay terminal. And feedback to the source terminal, or is measured by the target terminal and then fed back to the source terminal by the source relay terminal.
  • the third condition is included in the relay terminal reselection trigger condition, the third condition is determined by the source relay terminal and fed back to the source terminal. That is to say, the relay policy involved in the third condition is determined by the source relay terminal and then fed back to the source terminal.
  • the source relay terminal may feed back the measured or received measurement result or the relay policy to the source terminal according to the request of the source terminal, or may determine that the relay terminal reselects the relay terminal at the source relay terminal. After the condition, the measured or received measurement result or the relaying strategy is actively fed back to the source terminal.
  • Step 502a to step 502b if the source terminal determines to perform relay terminal reselection, the source terminal sends a notification message to the target network node by using the source relay terminal, and the notification message is used to notify the target network node to stop data transmission to the source terminal. It is to minimize data loss between the source terminal and the target network node during the relay terminal reselection process. Specifically, as shown in FIG. 5,
  • Step 502a If the source terminal determines to perform relay terminal reselection, the source terminal sends a notification message to the source relay terminal, so that the source relay terminal notifies the target network node to stop transmitting data to the source terminal.
  • Step 502b The source relay terminal sends a notification message to the target network node to notify the target network node to stop data transmission to the source terminal.
  • Step 503 If the source terminal determines to perform relay terminal reselection, determine a candidate relay terminal list for the source terminal, where the candidate relay terminal in the candidate relay list is adjacent to the source terminal and can provide a relay service on the network terminal ;
  • the candidate relay terminal list in step 503 is determined by the source terminal, and the determination manner is as follows:
  • the source terminal receives the discovery signal broadcast by the neighboring terminal. If the discovery signal carries the indication information that the neighboring terminal can provide the relay service for the source terminal, the neighboring terminal is determined as the candidate relay terminal of the source terminal, and the neighboring terminal is adjacent. The identification information of the terminal is placed in the candidate relay terminal list.
  • the source terminal broadcasts the discovery signal, and the discovery signal carries the identification information of the active terminal and the indication information that the source terminal needs the relay service. If the source terminal receives the discovery signal response information of the neighboring terminal and the discovery signal response information carries The neighboring terminal can provide the source terminal with the indication information of the relay service, determine the neighboring terminal as the candidate relay terminal of the source terminal, and put the identification information of the neighboring terminal into the candidate relay terminal list.
  • the neighboring terminal carried in the discovery signal can provide the indication information of the relay service for the source terminal. It means that the neighboring terminal can serve as the indication information that the UE-to-Network Relay provides the relay service for the source terminal.
  • the source terminal needs the indication information of the relay service, and the source terminal needs the indication information that the UE-to-network relay needs to provide the relay service.
  • the indication information that the neighboring terminal carried in the signal response information can provide the relay service to the source terminal is that the neighboring terminal can provide the relay service as the source terminal of the UE-to-network relay.
  • the D2D discovery mechanism is used to determine the terminal that is adjacent to the source terminal and is in the network state, and whether the network terminal can provide the relay service depends on the policy of the network terminal, for example, whether the network terminal acquires The authorization information of the UE-to-Network Relay, whether the power of the network terminal is suitable for providing the relay service, whether the load of the network terminal is suitable for providing the relay service, and whether the network terminal has the willingness to provide the relay service, and the network terminal and the network terminal and the network terminal Whether the relative speed or link interference condition of data transmission between the source terminals and between the network terminal and the target network node is suitable as a relay terminal or the like.
  • the relay strategy at the network terminal includes one or more combinations of the above examples. If the network terminal is not only adjacent to the source terminal, but also suitable for providing the relay service according to the policy of the network terminal, the network terminal is used as the candidate relay terminal.
  • Step 504 The source terminal determines, according to the obtained auxiliary information, a target relay terminal from the candidate relay terminal list for the source terminal.
  • the auxiliary information in step 504 includes at least one of the following information:
  • First auxiliary information channel quality or signal reception strength between the source terminal and the candidate relay terminal; second auxiliary information: channel quality or signal reception strength between the candidate relay terminal and the target network node; third auxiliary information: The relay policy of the candidate relay terminal.
  • the relaying policy of the candidate relay terminal includes one or more combinations of the following: whether the candidate relay terminal acquires the authorization information of the UE-to-Network Relay, and whether the power of the candidate relay terminal is suitable for providing Relay service, whether the load of the candidate relay terminal is suitable for providing the relay service, whether the candidate relay terminal has the willingness to provide the relay service, between the candidate relay terminal and the source terminal, and between the candidate relay terminal and the target network node Whether the relative speed of the transmitted data or the link interference condition is suitable as a relay terminal or the like.
  • the method for obtaining the auxiliary information in step 504 is: if the auxiliary information includes the first auxiliary information, the first auxiliary information is measured by the source terminal, or is measured by the candidate relay terminal and fed back to the source terminal;
  • the second auxiliary information is measured by the candidate relay terminal or the target network node and fed back to the source terminal;
  • the third auxiliary information is determined by the candidate relay terminal and fed back to the source terminal.
  • the auxiliary information is the information measured or received by the source terminal.
  • the auxiliary information may be measured by the source terminal, or may be reversed by the source terminal requesting the neighboring node.
  • the node obtained by the feed, adjacent to the source terminal includes a candidate relay terminal or a target network node.
  • Step 505a to step 505b the source terminal sends a connection release command to the source relay terminal, instructing the source relay terminal to release the connection with the source terminal, and instructing the source relay terminal to notify the target network node to release between the source relay terminal and the source relay terminal. Connection;
  • the source terminal sends a connection release command to the source relay terminal, indicating that the source relay terminal releases the connection with the source terminal; and the source relay terminal releases the connection with the source terminal, which refers to the source relay.
  • the terminal releases configuration information such as RRC, PDCP, RLC, MAC, and PHY related to the source terminal.
  • the source relay terminal notifies the target network node to release the connection with the source relay terminal.
  • the connection between the target network node and the source relay terminal means that the target network node releases configuration information such as RRC, PDCP, RLC, MAC, PHY and the like related to the source terminal between the source relay terminal and the source terminal.
  • Step 506a The source terminal establishes a connection with the target relay terminal.
  • Step 506b After receiving the notification of the source relay terminal, the target network node establishes a connection with the target relay terminal, where the connection release command received by the source relay terminal in step 505a carries the target relay terminal. Information.
  • the source terminal establishes a connection with the target relay terminal and establishes a connection between the target network node and the target relay terminal, including the source terminal or the target network node establishing an IP connection with the target relay terminal and completing the low-level RRC, PDCP, Related configuration of RLC, MAC, and PHY.
  • Step 507 The target relay terminal provides a data transmission service for the source terminal and the target network node, so that the source terminal and the target network node directly communicate.
  • the source terminal performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition. If the source terminal determines to perform relay terminal reselection, the source terminal determines a candidate relay terminal list, and the source terminal is configured according to the source terminal. The auxiliary information determines the target relay terminal for the source terminal from the candidate relay terminal list, so that the source terminal, the target network node, and the source relay terminal are no longer suitable as the relay terminal in the process of moving, the source terminal The target relay terminal can be reselected for the source terminal.
  • Embodiment 4 describes a relay terminal reselection procedure for the above scenario 3. As shown in Figure 6, the specific steps of the process are as follows:
  • Step 601 The source relay terminal performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition.
  • the relay terminal reselection trigger condition includes at least one of the following conditions:
  • the first condition is that the channel quality or the signal receiving strength between the source terminal and the source relay terminal is less than a set threshold; or the transmission or retransmission between the source terminal and the source relay terminal reaches the preset maximum number of times and still transmits failure;
  • the second condition is that the channel quality or the signal receiving strength between the source relay terminal and the target terminal is less than a set threshold; or the transmission or retransmission times between the source relay terminal and the target terminal reaches a preset maximum number of times and still transmits failure;
  • the third condition according to the relay policy of the source relay terminal, the source relay terminal is no longer suitable as the relay terminal of the source terminal.
  • the relay policy of the source relay terminal includes one or more combinations of the following: whether the source relay terminal acquires the authorization information of the UE-to-UE relay, and whether the power of the source relay terminal is suitable for providing the relay Service, whether the load of the source relay terminal is suitable for providing the relay service, whether the source relay terminal has the willingness to provide the relay service, the source relay terminal and the source terminal, and the data between the source relay terminal and the target terminal Whether the relative speed or link interference condition is suitable as a relay terminal or the like.
  • the first condition is measured by the source terminal and fed back to the source relay terminal, or is measured by the source relay terminal. That is, the channel quality or signal reception strength between the source terminal and the source relay terminal involved in the first condition, or the number of transmission or retransmission between the source terminal and the source relay terminal, is the source Measured by the relay terminal, or measured by the source terminal and fed back to the source relay terminal.
  • the second condition is included in the relay terminal reselection trigger condition, the second condition is measured by the source relay terminal, or is measured by the target node and fed back to the source relay terminal. That is, the channel quality or signal reception strength between the source relay terminal and the target node involved in the second condition, or the number of transmission or retransmission between the source relay terminal and the target node, is determined by the source relay terminal. The measurement is obtained or measured by the target node and fed back to the source relay terminal.
  • the third condition is included in the relay terminal reselection trigger condition, the third condition is determined by the source relay terminal. That is to say, the relay policy involved in the third condition is determined by the source relay terminal.
  • the source terminal or the target terminal may feed back the measured or received measurement result to the source relay terminal according to the request of the source relay terminal, or may determine that the relay terminal reselection condition is satisfied at the source terminal. After that, the measured or received measurement result is actively fed back to the source relay terminal.
  • Step 602a to step 602b if the source relay terminal determines to perform relay terminal reselection, the source relay terminal sends a notification message to the source terminal and the target terminal, and the notification message is used to notify the source terminal and the target terminal to stop transmitting data to the source terminal.
  • This step is to minimize data loss between the source terminal and the target terminal during the relay terminal reselection process. Specifically, as shown in FIG. 6,
  • Step 602a If the source relay terminal determines to perform the relay terminal reselection, the source relay terminal sends a first notification message to the source terminal, where the first notification message is used to notify the source terminal to stop sending data to the target terminal.
  • Step 602b The source relay terminal sends a second notification message to the target terminal, where the second notification message is used to notify the target terminal to stop sending data to the source terminal.
  • Step 603 if the source relay terminal determines to perform relay terminal reselection, determining a candidate relay terminal list for the source relay terminal, wherein the candidate relay terminal in the candidate relay list is adjacent to the source terminal and the target terminal and can Provide relay service;
  • the candidate relay terminal list in step 603 is determined by the source terminal and then fed back to the source relay terminal.
  • the source terminal determines the candidate relay terminal list refer to step 403 in Embodiment 2, and details are not described herein.
  • Step 604 The source relay terminal determines, according to the obtained auxiliary information, the source terminal from the list of candidate relay terminals. Standard relay terminal;
  • the auxiliary information in step 604 includes at least one of the following information:
  • First auxiliary information channel quality or signal reception strength between the source terminal and the candidate relay terminal; second auxiliary information: channel quality or signal reception strength between the candidate relay terminal and the target terminal; third auxiliary information: candidate Relay policy of the relay terminal.
  • the relay policy of the candidate relay terminal includes one or more combinations of the following: whether the candidate relay terminal acquires the authorization information of the UE-to-UE relay, and whether the power of the candidate relay terminal is suitable for providing Relay service, whether the load of the candidate relay terminal is suitable for providing a relay service, whether the candidate relay terminal has a willingness to provide a relay service, between the candidate relay terminal and the source terminal, and between the candidate relay terminal and the target terminal Whether the relative speed of the transmitted data or the link interference condition is suitable as a relay terminal or the like.
  • the method for obtaining the auxiliary information in step 604 is: if the auxiliary information includes the first auxiliary information, the first auxiliary information is measured by the source terminal and fed back to the source relay terminal, or is measured by the candidate relay terminal and passes through the source. The terminal feeds back to the source relay terminal;
  • the second auxiliary information is measured by the target terminal and fed back to the source relay terminal, or is measured by the candidate relay terminal and fed back to the source relay terminal by the target terminal;
  • the third auxiliary information is determined by the candidate relay terminal and fed back to the source relay terminal by the source terminal or the target terminal.
  • the auxiliary information is the information measured or received by the source relay terminal.
  • the source terminal acquires the auxiliary information.
  • the auxiliary information may be measured by the source terminal, or may be obtained by the source terminal requesting the neighboring node to obtain feedback, and the node adjacent to the source terminal includes the candidate relay terminal or the target terminal.
  • Step 605a to step 605b the source relay terminal sends a first connection release command to the source terminal, and sends a second connection release command to the target terminal.
  • the first connection release command is used to indicate the connection between the source terminal release and the source relay terminal.
  • a second connection release command is used to indicate a connection between the target terminal release and the source relay terminal;
  • Step 605a The source relay terminal sends a first connection release command to the source terminal, indicating that the source terminal releases the connection with the source relay terminal, and the source terminal releases the connection with the source relay terminal, which is the release and the source terminal.
  • a first connection release command to the source terminal, indicating that the source terminal releases the connection with the source relay terminal, and the source terminal releases the connection with the source relay terminal, which is the release and the source terminal.
  • Related RRC, PDCP, RLC, MAC, PHY and other configuration information are related to the source terminal.
  • Step 605b The source relay terminal sends a second connection release command to the target terminal, indicating that the target terminal releases the connection with the source relay terminal.
  • the connection between the target network terminal and the source relay terminal means that the target terminal releases configuration information such as RRC, PDCP, RLC, MAC, and PHY related to the source terminal and the source terminal.
  • configuration information such as RRC, PDCP, RLC, MAC, and PHY related to the source terminal and the source terminal.
  • Step 606a the first connection release command carries the information of the target relay terminal, and after receiving the first connection release command, the source terminal establishes a connection with the target relay terminal.
  • Step 606b the second connection release command carries information of the target relay terminal, and the target terminal receives the second After the connection release command is established, a connection with the target relay terminal is established;
  • the source terminal establishes a connection with the target relay terminal and establishes a connection between the target terminal and the target relay terminal, including the source terminal or the target terminal establishing an IP connection with the target relay terminal, and completing low-level RRC, PDCP, RLC, MAC, PHY related configuration.
  • Step 607 The target relay terminal provides a data transmission service for the source terminal and the target terminal, so that the source terminal and the target terminal directly communicate with each other.
  • the source relay terminal performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition, and determines the candidate relay terminal list for the source terminal if the source relay terminal determines to perform the relay terminal reselection.
  • the source relay terminal determines the target relay terminal for the source terminal from the candidate relay terminal list according to the auxiliary information, so that the source terminal, the target terminal, and the source relay terminal are no longer suitable as relays during the mobile process.
  • the source relay terminal can reselect the target relay terminal for the source terminal.
  • Embodiment 5 describes a relay terminal reselection procedure for the above scenario 4. As shown in Figure 7, the specific steps of the process are as follows:
  • Step 701 The source relay terminal performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition.
  • the relay terminal reselection trigger condition includes at least one of the following conditions:
  • the first condition is that the channel quality or the signal receiving strength between the source terminal and the source relay terminal is less than a set threshold; or the transmission or retransmission between the source terminal and the source relay terminal reaches the preset maximum number of times and still transmits failure;
  • the second condition the channel quality or the signal receiving strength between the source relay terminal and the target network node is less than a set threshold; or the number of transmissions or retransmissions between the source relay terminal and the target network node reaches a preset maximum number of times Still failed to transfer;
  • the third condition according to the relay policy of the source relay terminal, the source relay terminal is no longer suitable as the relay terminal of the source terminal.
  • the relay policy of the source relay terminal includes one or more combinations of the following: whether the source relay terminal acquires the authorization information of the UE-to-Network Relay, and whether the power of the source relay terminal is suitable for providing Relay service, whether the load of the source relay terminal is suitable for providing relay service, whether the source relay terminal has the willingness to provide relay service, between the source relay terminal and the source terminal, and between the source relay terminal and the target network node Whether the relative speed of the transmitted data or the link interference condition is suitable as a relay terminal or the like.
  • the first condition is measured by the source terminal and fed back to the source relay terminal, or is measured by the source relay terminal. That is, the channel quality or signal reception strength between the source terminal and the source relay terminal involved in the first condition, or the number of transmission or retransmission between the source terminal and the source relay terminal, is the source Measured by the relay terminal, or measured by the source terminal and fed back to the source relay terminal.
  • the second condition is included in the relay terminal reselection trigger condition, the second condition is measured by the source relay terminal, or is measured by the target node and fed back to the source relay terminal. That is, the source relay involved in the second condition
  • the channel quality or signal reception strength between the terminal and the target node, or the number of transmissions or retransmissions between the source relay terminal and the target node, is measured by the source relay terminal, or is measured and fed back by the target node. To the source relay terminal.
  • the third condition is included in the relay terminal reselection trigger condition, the third condition is determined by the source relay terminal. That is to say, the relay policy involved in the third condition is determined by the source relay terminal.
  • the source terminal or the target network node may feed back the measured or received measurement result to the source relay terminal according to the request of the source relay terminal, or may actively take the initiative after the source terminal satisfies the decision relay terminal reselection condition.
  • the measured or received measurement result is fed back to the source relay terminal.
  • Step 702a to step 702b if the source relay terminal determines to perform relay terminal reselection, the source relay terminal sends a notification message to the source terminal and the target network node, where the notification message is used to notify the source terminal and the target network node to stop performing the source terminal. Data transmission, this step is to minimize data loss between the source terminal and the target network node during relay terminal reselection. As shown in Figure 7,
  • Step 702a If the source relay terminal determines to perform the relay terminal reselection, the source relay terminal sends a first notification message to the source terminal, where the first notification message is used to notify the source terminal to stop sending data to the target network node.
  • Step 702b The source relay terminal sends a second notification message to the target network node, where the second notification message is used to notify the target network node to stop sending data to the source terminal.
  • Step 703 If the source relay terminal determines to perform relay terminal reselection, determine a candidate relay terminal list for the source terminal, where the candidate relay terminal in the candidate relay list is adjacent to the source terminal and can provide a relay service.
  • the candidate relay terminal list in step 703 is determined by the source terminal and then fed back to the source relay terminal.
  • the source terminal determines the candidate relay terminal list refer to step 503 in Embodiment 3, and details are not described herein.
  • Step 704 The source relay terminal determines, according to the obtained auxiliary information, a target relay terminal from the candidate relay terminal list for the source terminal.
  • the auxiliary information in step 704 includes at least one of the following information:
  • First auxiliary information channel quality or signal reception strength between the source terminal and the candidate relay terminal; second auxiliary information: channel quality or signal reception strength between the candidate relay terminal and the target network node; third auxiliary information: The relay policy of the candidate relay terminal.
  • the relaying policy of the candidate relay terminal includes one or more combinations of the following: whether the candidate relay terminal acquires the authorization information of the UE-to-Network Relay, and whether the power of the candidate relay terminal is suitable for providing Relay service, whether the load of the candidate relay terminal is suitable for providing the relay service, whether the candidate relay terminal has the willingness to provide the relay service, between the candidate relay terminal and the source terminal, and between the candidate relay terminal and the target network node Whether the relative speed of the transmitted data or the link interference condition is suitable as a relay terminal or the like.
  • the method for obtaining the auxiliary information in step 704 is: if the auxiliary information includes the first auxiliary information, the first auxiliary information is measured by the source terminal and fed back to the source relay terminal, or is measured by the candidate relay terminal and passes through the source. Terminal feedback To the source relay terminal;
  • the second auxiliary information is measured by the target network node and fed back to the source relay terminal, or is measured by the candidate relay terminal and fed back to the source relay terminal by the target network node. ;
  • the third auxiliary information is determined by the candidate relay terminal and fed back to the source relay terminal by the source terminal or the target network node.
  • the auxiliary information is the information measured or received by the source relay terminal.
  • the source terminal acquires the auxiliary information.
  • the auxiliary information may be measured by the source terminal, or may be obtained by the source terminal requesting the neighboring node to perform feedback, and the node adjacent to the source terminal includes the candidate relay terminal or the target network node.
  • Step 705a to step 705b the source relay terminal sends a first connection release command to the source terminal, and sends a second connection release command to the target network node.
  • the first connection release command is used to indicate between the source terminal release and the source relay terminal.
  • a connection a second connection release command is used to indicate a connection between the target network node release and the source relay terminal;
  • Step 705a The source relay terminal sends a first connection release command to the source terminal, indicating that the source terminal releases the connection with the source relay terminal, and the source terminal releases the connection with the source relay terminal, which is the release and the source terminal.
  • a first connection release command to the source terminal, indicating that the source terminal releases the connection with the source relay terminal, and the source terminal releases the connection with the source relay terminal, which is the release and the source terminal.
  • Related RRC, PDCP, RLC, MAC, PHY and other configuration information are related to the source terminal.
  • Step 705b The source relay terminal sends a second connection release command to the target network node to indicate the connection between the target network node release and the source relay terminal.
  • the connection between the target network node and the source relay terminal means that the target network node releases configuration information such as RRC, PDCP, RLC, MAC, PHY and the like related to the source terminal between the source relay terminal and the source terminal.
  • Step 706a The first connection release command carries the information of the target relay terminal, and after receiving the first connection release command, the source terminal establishes a connection with the target relay terminal.
  • Step 706b The second connection release command carries information of the target relay terminal, and after receiving the second connection release command, the target network node establishes a connection with the target relay terminal.
  • the source terminal establishes a connection with the target relay terminal and establishes a connection between the target network node and the target relay terminal, including the source terminal or the target network node establishing an IP connection with the target relay terminal and completing the low-level RRC, PDCP, Related configuration of RLC, MAC, and PHY.
  • Step 707 The target relay terminal provides a data transmission service for the source terminal and the target network node, so that the source terminal and the target network node directly communicate.
  • the source relay terminal performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition, and determines the candidate relay terminal list for the source terminal if the source relay terminal determines to perform the relay terminal reselection.
  • the source relay terminal determines the target relay terminal for the source terminal from the candidate relay terminal list according to the auxiliary information, so that the source terminal, the target network node, and the source relay terminal are no longer suitable as the medium relay terminal in the process of moving. Following the terminal, the source relay terminal can reselect the target relay terminal for the source terminal.
  • the embodiment of the present application further provides a control node device, where the control node device.
  • a control node device is provided in the embodiment of the present application.
  • the control node device is a source terminal or a source relay terminal, and the control node device includes:
  • the determining module 801 is configured to perform a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition;
  • the first determining module 802 determines, if the relay terminal reselection is performed, the candidate relay terminal list for the source terminal;
  • the second determining module 803 determines a target relay terminal for the source terminal from the candidate relay terminal list according to the acquired auxiliary information.
  • the candidate relay terminal list includes terminals that are both adjacent to the source terminal and the target terminal and are capable of providing a relay service.
  • the first determining module 802 is specifically configured to:
  • the control node device When the control node device is the source terminal, receiving the discovery signal broadcast by the neighboring terminal, if the discovery signal carries the identification information of the target terminal and the neighboring terminal can provide the indication information of the relay service for the source terminal, the neighboring terminal is determined as the source terminal. a candidate relay terminal, and placing the identification information of the neighboring terminal into the candidate relay terminal list; wherein the neighboring terminal carries the identification information of the target terminal to the discovery signal after discovering the target terminal; or
  • the discovery signal is broadcasted, and the discovery signal carries the identification information of the active terminal and the target terminal, and the indication information that the source terminal needs the relay service, if the source terminal receives the discovery signal response information of the neighboring terminal and finds The signal response information carries the indication information that the neighboring terminal can provide the relay service for the source terminal, and then determines that the neighboring terminal is the candidate relay terminal of the source terminal, and puts the identification information of the neighboring terminal into the candidate relay terminal list; After the neighboring terminal finds the terminal corresponding to the identifier information of the target terminal, the neighboring terminal returns the discovery signal response information to the source terminal;
  • the receiving source terminal determines and feeds back a list of candidate relay terminals.
  • the candidate relay terminal list includes an on-net terminal adjacent to the source terminal and capable of providing a relay service.
  • the first determining module 802 is specifically configured to:
  • the discovery signal broadcasted by the neighboring terminal is received, and if the discovery signal carries the indication information that the neighboring terminal can provide the relay service for the source terminal, the neighboring terminal is determined as the candidate relay terminal of the source terminal. And placing the identification information of the neighboring terminal into the candidate relay terminal list; or
  • the discovery signal is broadcasted, and the discovery signal carries the identification information of the active terminal and the indication information that the source terminal needs the relay service, and if the source terminal receives the discovery signal response information of the neighboring terminal and finds the signal response
  • the information carries the indication information that the neighboring terminal can provide the relay service for the source terminal, and then determines that the neighboring terminal is the candidate relay terminal of the source terminal, and puts the identification information of the neighboring terminal into the candidate relay terminal list;
  • the candidate relay terminal list determined and fed back by the source terminal is received.
  • the relay terminal reselection trigger condition includes at least one of the following conditions:
  • the first condition is that the channel quality or the signal receiving strength between the source terminal and the source relay terminal is less than a set threshold; or the transmission or retransmission between the source terminal and the source relay terminal reaches the preset maximum number of times and still transmits failure;
  • the second condition the channel quality or the signal receiving strength between the source relay terminal and the target node is less than a set threshold; or the transmission or retransmission between the source relay terminal and the target node reaches the preset maximum number of times and still transmits Failure; wherein the target node is a target terminal or a target network node;
  • the third condition according to the relay policy of the source relay terminal, the source relay terminal is no longer suitable as the relay terminal of the source terminal.
  • control node device is a source terminal
  • the first condition is included in the relay terminal reselection trigger condition, the first condition is measured by the source terminal, or is measured by the source relay terminal and fed back to the source terminal;
  • the second condition is included in the relay terminal reselection trigger condition, the second condition is measured by the source relay terminal and fed back to the source terminal, or is measured by the target node and fed back to the source terminal by the source relay terminal;
  • the third condition is included in the relay terminal reselection trigger condition, the third condition is determined by the source relay terminal and fed back to the source terminal.
  • control node device is a source relay terminal
  • the first condition is included in the relay terminal reselection trigger condition, the first condition is measured by the source terminal and fed back to the source relay terminal, or is measured by the source relay terminal;
  • the second condition is included in the relay terminal reselection trigger condition, the second condition is measured by the source relay terminal, or is measured by the target node and fed back to the source relay terminal;
  • the third condition is included in the relay terminal reselection trigger condition, the third condition is determined by the source relay terminal.
  • the auxiliary information includes at least one of the following information:
  • First auxiliary information channel quality or signal reception strength between the source terminal and the candidate relay terminal;
  • Second auxiliary information channel quality or signal reception strength between the candidate relay terminal and the target node, wherein the target node is the target terminal or the target network node;
  • Third auxiliary information a relay policy of the candidate relay terminal.
  • control node device is the source terminal:
  • the auxiliary information includes the first auxiliary information
  • the first auxiliary information is measured by the source terminal, or is measured by the candidate relay terminal and fed back to the source terminal;
  • the second auxiliary information is included in the auxiliary information, the second auxiliary information is measured by the candidate relay terminal or the target node and fed back to the source terminal;
  • the third auxiliary information is determined by the candidate relay terminal and fed back to the source terminal.
  • control node device is a source relay terminal:
  • the auxiliary information includes the first auxiliary information
  • the first auxiliary information is measured by the source terminal and fed back to the source relay terminal. End, or is measured by the candidate relay terminal and fed back to the source relay terminal through the source terminal;
  • the second auxiliary information is measured by the target node and fed back to the source relay terminal, or is measured by the candidate relay terminal and fed back to the source relay terminal by the target node;
  • the third auxiliary information is determined by the candidate relay terminal and fed back to the source relay terminal by the source terminal or the target node.
  • control node device further includes a sending module
  • the sending module is configured to: when the control node device is the source terminal, send a connection release command to the source relay terminal and establish a connection with the target relay terminal, where the connection release command is after the second determining module 803 determines the target relay terminal for the source terminal. Transmitted, wherein the connection release command is used to indicate that the source relay terminal releases the connection with the source terminal, and instructs the source relay terminal to notify the target node to release the connection with the source relay terminal, wherein the target node is the target Terminal or target network node; or,
  • the sending module is configured to: when the control node device is the source relay terminal, send a first connection release command to the source terminal, and send a second connection release command to the target node, where the first connection release command and the second connection release command are
  • the second determining module 803 is configured to determine, after the source terminal determines the target relay terminal, the first connection release command is used to indicate the connection between the source terminal and the source relay terminal, and the second connection release command is used to indicate that the target node is released and The connection between the source relay terminals; the target node is the target terminal or the target network node.
  • the method further includes a notification module
  • the notification module is specifically configured to: when the control node is the source terminal, send a notification message to the target node, where the notification message is sent after the determining module 801 determines that the relay intermediate reselection is performed, and the notification message is used to notify the target node to stop
  • the source terminal performs data transmission, and the target node is a target terminal or a target network node; or
  • the first notification message is sent to the source terminal, and the second notification message is sent to the target node, where the first notification message and the second notification message are determined by the decision module 801 to perform relaying.
  • the first notification message is used to notify the source terminal to stop sending data to the target node
  • the second notification message is used to notify the target node to stop sending data to the source terminal
  • the target node is the target terminal or the target network node.
  • the control node device, the source terminal or the source relay terminal performs a relay terminal reselection decision for the source terminal according to the relay terminal reselection trigger condition, and determines a candidate for the source terminal if it is determined that the relay terminal reselection is performed.
  • a relay terminal list which determines a target relay terminal for the source terminal from the candidate relay terminal list according to the auxiliary information, so that the source terminal, the target node, and the source relay terminal are no longer suitable as relays in the process of moving At the time of the terminal, the source terminal or the source relay terminal can reselect the relay terminal for the source terminal.
  • the embodiment of the present application further provides a terminal, and the specific content of the terminal may refer to the foregoing method embodiment, and details are not described herein again.
  • FIG. 9 An embodiment of the present application shown in FIG. 9 provides a terminal, where the terminal is a source terminal or a source relay terminal, and the terminal package include:
  • the processor 900 is configured to read a program from the memory 920 and perform the following process:
  • the transceiver 910 is configured to receive and send data under the control of the processor 900;
  • the memory 920 is configured to save data used by the processor 900 to perform operations.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 900 and various circuits of memory represented by memory 920.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 910 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 930 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 900 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 900 in performing operations.
  • the source terminal or the source relay terminal can reselect the relay terminal for the source terminal.
  • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/CN2015/086537 2014-08-22 2015-08-10 一种中继终端重选的方法及设备 Ceased WO2016026396A1 (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2017529128A JP6463477B2 (ja) 2014-08-22 2015-08-10 中継端末の再選方法及び装置
EP22178348.3A EP4084528A1 (en) 2014-08-22 2015-08-10 Relay terminal reselection method and device
US15/501,808 US10326516B2 (en) 2014-08-22 2015-08-10 Relay terminal reselection method and device
KR1020177007698A KR20170047295A (ko) 2014-08-22 2015-08-10 중계단말의 재선별 방법 및 장치
EP15834537.1A EP3185612B1 (en) 2014-08-22 2015-08-10 Relay terminal reselection method and device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410419123.9 2014-08-22
CN201410419123.9A CN105451282A (zh) 2014-08-22 2014-08-22 一种中继终端重选的方法及设备

Publications (1)

Publication Number Publication Date
WO2016026396A1 true WO2016026396A1 (zh) 2016-02-25

Family

ID=55350189

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/086537 Ceased WO2016026396A1 (zh) 2014-08-22 2015-08-10 一种中继终端重选的方法及设备

Country Status (6)

Country Link
US (1) US10326516B2 (https=)
EP (2) EP4084528A1 (https=)
JP (1) JP6463477B2 (https=)
KR (1) KR20170047295A (https=)
CN (1) CN105451282A (https=)
WO (1) WO2016026396A1 (https=)

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3259935B1 (en) * 2015-02-16 2021-07-07 Samsung Electronics Co., Ltd. Method for triggering transmission of user equipment (ue)-to-network relay indication
US10595262B2 (en) * 2015-05-15 2020-03-17 Sony Corporation Telecommunications apparatus and methods
EP3297326A4 (en) * 2015-05-15 2018-03-28 ZTE Corporation Method and system for replacing relay node, d2d user equipment and control node
JP6687024B2 (ja) * 2015-06-25 2020-04-22 日本電気株式会社 Ｄ２ｄ通信制御装置、無線端末、及び中継無線端末候補選択方法
US9723543B2 (en) * 2015-07-08 2017-08-01 Blackberry Limited Systems and methods for managing a UE-to-network relay
US10548174B2 (en) * 2015-10-01 2020-01-28 Sony Corporation Telecommunications apparatuses and methods
US10524108B2 (en) * 2015-10-19 2019-12-31 Qualomm Incorporated D2D communication for eMTC design considerations
CN107645392B (zh) * 2016-07-20 2020-07-10 电信科学技术研究院 一种用户设备间的通信方法及装置、通信控制方法及装置
DE112017003646T5 (de) 2016-07-21 2019-04-04 Samsung Electronics Co., Ltd. SYSTEM UND VERFAHREN ZUM ERKENNEN VON BENUTZERGERÄTEN (UEs) ÜBER SIDE-LINK IN VORRICHTUNG-ZU-VORRICHTUNG (D2D) -KOMMUNIKATION
AU2016416416B2 (en) * 2016-07-28 2021-09-23 Razer (Asia-Pacific) Pte. Ltd. Receiver devices, transmitter devices, methods for controlling a receiver device, methods for controlling a transmitter device, and computer-readable media
JP6729264B2 (ja) * 2016-10-06 2020-07-22 富士通株式会社 情報処理装置、情報処理方法、情報処理プログラム及び情報処理システム
LU100072B1 (en) * 2017-02-13 2018-10-01 Networxinmotion Gmbh I G Intelligent node for extending a telecommunications network
CN108632919A (zh) * 2017-03-23 2018-10-09 索尼公司 用于无线通信的电子装置以及无线通信方法
CN108810854A (zh) * 2017-04-28 2018-11-13 索尼公司 电子设备及由电子设备执行的方法
CN109905887B (zh) * 2017-12-08 2020-10-23 上海诺基亚贝尔股份有限公司 用于中继设备的通信方法、设备和计算机可读存储介质
CN110300441A (zh) * 2018-03-22 2019-10-01 天擎积体电路股份有限公司 兼具中继及路由功能的无线传输装置、系统及方法
US20190297557A1 (en) * 2018-03-22 2019-09-26 Mars Semiconductor Corp Wireless transmission device, system and method having repeating and routing functions
CN110611940A (zh) * 2018-06-15 2019-12-24 海信集团有限公司 一种选择Relay UE的方法和设备
CN110611944A (zh) * 2018-06-15 2019-12-24 海信集团有限公司 一种重选Relay UE的方法和设备
CN110611943A (zh) * 2018-06-15 2019-12-24 海信集团有限公司 一种重选Relay UE的方法和设备
CN111491287A (zh) * 2019-01-25 2020-08-04 电信科学技术研究院有限公司 一种调度终端确定方法、终端和网络侧设备
CN111586826B (zh) * 2019-02-15 2023-06-16 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
CN111698753B (zh) * 2019-03-12 2022-08-05 中国移动通信有限公司研究院 中继选择方法及装置、设备、存储介质
JP7438194B2 (ja) * 2019-03-29 2024-02-26 本田技研工業株式会社 中継装置及び通信方法
US11778533B2 (en) * 2019-08-02 2023-10-03 Comcast Cable Communications, Llc Path optimization in a mesh network
CN111800837B (zh) 2019-08-15 2023-01-06 维沃移动通信有限公司 中继重选方法、设备及介质
CN110461020A (zh) * 2019-08-16 2019-11-15 展讯通信（上海）有限公司 用于辅链路的中继选择方法及装置、存储介质、终端
CN112566277B (zh) * 2019-09-25 2023-01-31 成都鼎桥通信技术有限公司 数据回传方法及装置
US20230022773A1 (en) * 2019-12-19 2023-01-26 Telefonaktiebolaget Lm Ericsson (Publ) Method for Link Selection, User Equipment, Network Node, and Telecommunication System
EP4079036B1 (en) * 2019-12-20 2026-01-28 QUALCOMM Incorporated Beam-based relay node switch
CN113038566B (zh) * 2019-12-25 2023-04-25 维沃移动通信有限公司 路径选择方法、终端和网络侧设备
CN113055985B (zh) * 2019-12-27 2022-08-12 大唐移动通信设备有限公司 一种信息处理方法、装置、设备及计算机可读存储介质
CN113133080B (zh) * 2020-01-15 2023-04-25 大唐移动通信设备有限公司 一种中继设备的选择方法、设备及计算机存储介质
CN113453272B (zh) * 2020-03-25 2023-11-10 维沃移动通信有限公司 副链路中继架构中的切换方法和设备
US12587924B2 (en) * 2020-04-08 2026-03-24 Interdigital Patent Holdings, Inc. Methods, apparatuses and systems directed to a change of WTRU to WTRU relay
CN113596934B (zh) * 2020-04-30 2022-10-18 维沃移动通信有限公司 中继终端设备的重选方法和终端设备
EP4154669A1 (en) 2020-05-19 2023-03-29 IDAC Holdings, Inc. Method and apparatus for service continuity associated with wtru to wtru relays
CN111885666A (zh) * 2020-06-30 2020-11-03 科大讯飞股份有限公司 一种多中继协作传输方法及装置
CN116134885B (zh) * 2020-08-07 2025-09-09 华为技术有限公司 一种通信方法及装置
EP4197233A4 (en) * 2020-08-17 2024-08-07 Kyocera Corporation MANAGING A RELAY DEVICE USING NEIGHBOR LISTS
US20230284046A1 (en) * 2020-09-04 2023-09-07 Qualcomm Incorporated Nr sidelink fast intra-cell relay switching
WO2022061818A1 (en) * 2020-09-27 2022-03-31 Lenovo (Beijing) Limited Methods and apparatuses for relay reselection and connection handling procedure in ue-to-ue relay scenario
EP4223064A2 (en) * 2020-10-01 2023-08-09 InterDigital Patent Holdings, Inc. Relay discovery and selection
US11705959B2 (en) * 2020-10-02 2023-07-18 Qualcomm Incorporated Identification and utilization of assisting nodes
EP3986086A1 (en) * 2020-10-13 2022-04-20 Nokia Technologies Oy Relay ue selection
CN114390621B (zh) * 2020-10-22 2024-04-26 大唐移动通信设备有限公司 一种中继选择和重选的方法、装置及终端
CN114599121A (zh) * 2020-12-03 2022-06-07 夏普株式会社 由用户设备执行的方法及用户设备
WO2022135035A1 (en) * 2020-12-22 2022-06-30 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for relay selection
US12250599B2 (en) 2021-02-19 2025-03-11 Apple Inc. Technologies for relay user equipment reselection
CN115623451B (zh) * 2021-07-12 2025-07-18 维沃移动通信有限公司 条件切换方法和设备
KR102738769B1 (ko) * 2021-07-15 2024-12-05 한국전자통신연구원 중복 식별자 처리 방법 및 장치
WO2023011904A1 (en) * 2021-08-05 2023-02-09 Sony Group Corporation Communications device, relay communications node, infrastructure equipment and methods
CN116133090A (zh) * 2021-11-12 2023-05-16 中国移动通信有限公司研究院 通信方法、装置、终端及存储介质
JP7769130B2 (ja) * 2022-01-07 2025-11-12 １Ｆｉｎｉｔｙ株式会社 中継選択又は再選択方法、装置及びシステム
CN116828428A (zh) * 2022-03-22 2023-09-29 维沃移动通信有限公司 基于辅助终端的测量方法、装置、通信设备及可读存储介质
CN117560738A (zh) * 2022-08-04 2024-02-13 华为技术有限公司 一种通信方法、装置及设备
GB2621559A (en) * 2022-08-09 2024-02-21 Nokia Technologies Oy Apparatus, method and computer program
WO2024119510A1 (en) * 2022-12-09 2024-06-13 Nec Corporation Devices and methods for communication
CN119174203A (zh) * 2023-02-10 2024-12-20 北京小米移动软件有限公司 无线通信方法、装置、设备及存储介质
EP4664948A4 (en) * 2023-02-10 2026-03-25 Beijing Xiaomi Mobile Software Co Ltd INFORMATION PROCESSING METHOD AND APPARATUS, TERMINAL, AND STORAGE MEDIA
CN116233960B (zh) * 2023-03-02 2025-11-25 深圳艾灵网络有限公司 设备配对方法、电子设备及计算机可读存储介质
CN117715143B (zh) * 2024-02-05 2024-05-28 成都云位信息技术有限公司 一种基于移动终端的中继自组网通信方法和系统
WO2026019216A1 (ko) * 2024-07-16 2026-01-22 엘지전자 주식회사 무선 통신 시스템에서 멀티-홉 릴레이 기반 실패 처리 방법 및 장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101651478A (zh) * 2009-09-15 2010-02-17 电子科技大学 一种空时编码协作中继选择与功率分配联合方案
CN102769938A (zh) * 2011-05-05 2012-11-07 英特尔移动通信有限公司 移动无线电通信设备及控制移动无线电通信设备的方法
US20130188552A1 (en) * 2010-09-21 2013-07-25 Telefonaktiebolaget L M Ericsson (Publ) Relaying in mixed licensed and unlicensed carrier aggregation
CN103581877A (zh) * 2013-10-10 2014-02-12 南京邮电大学 一种基于终端直通通信的多中继通信方法

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4026770B2 (ja) * 2004-02-06 2007-12-26 Ｋｄｄｉ株式会社 マルチホップ無線ネットワークの経路更新方法および無線端末
CN101064911B (zh) * 2006-04-28 2012-08-22 上海贝尔阿尔卡特股份有限公司 无线接入系统的切换控制方法、中继站和基站
JP5036602B2 (ja) * 2008-03-11 2012-09-26 三菱電機株式会社 無線アドホック端末およびアドホック・ネットワーク・システム
US8902805B2 (en) 2008-10-24 2014-12-02 Qualcomm Incorporated Cell relay packet routing
US20120135677A1 (en) * 2010-04-16 2012-05-31 Samsung Electronics Co., Ltd. Method and system for relay-initiated relay teardown operations in wireless communication networks
CN102469410B (zh) 2010-11-02 2016-04-27 中国移动通信集团公司 一种数据传输方法、设备及系统
WO2012102546A2 (en) 2011-01-25 2012-08-02 Lg Electronics Inc. Method for performing inter-mobile station (ms) handover in radio access system and ms therefor
WO2013012225A2 (ko) * 2011-07-15 2013-01-24 엘지전자 주식회사 무선 접속 시스템에서 장치 간 통신 중 핸드오버 수행 방법 및 이를 위한 장치
KR20140068088A (ko) * 2011-08-30 2014-06-05 엘지전자 주식회사 셀룰러 네트워크에서 단말 간 직접 통신을 지원하는 방법 및 이를 위한 장치
WO2013048078A1 (en) * 2011-09-26 2013-04-04 Samsung Electronics Co., Ltd. Method and system for relay-initiated relay teardown operations in wireless communication networks
US10484838B2 (en) * 2013-02-28 2019-11-19 Lg Electronics Inc. Group communication method and device for providing proximity service
CN105359557B (zh) * 2013-07-04 2019-03-15 Lg电子株式会社 用于接近服务的中继控制方法及其设备
US10225844B2 (en) * 2013-07-05 2019-03-05 Lg Electronics Inc. Method for selecting or reselecting relay for proximity service
US9319127B2 (en) * 2013-08-09 2016-04-19 Electronics And Telecommunications Research Institute Method of relay between devices
TWI612839B (zh) * 2013-08-09 2018-01-21 財團法人資訊工業策進會 使用者設備及其裝置對裝置通訊選擇方法
EP2879418A1 (en) * 2013-11-27 2015-06-03 Nokia Corporation D2d inter cluster communication and configurations
CN103634812B (zh) * 2013-11-27 2017-03-15 西安电子科技大学 一种基于用户设备中继同小区设备到设备直传通信的方法
CN103796317B (zh) * 2013-12-06 2017-01-11 南京邮电大学 一种基于终端直通中继通信的资源分配方法
CN103781016A (zh) * 2014-01-28 2014-05-07 宇龙计算机通信科技(深圳)有限公司 通信模式的选择方法和选择装置、终端
US10142847B2 (en) * 2014-05-23 2018-11-27 Qualcomm Incorporated Secure relay of discovery information in wireless networks
WO2018048078A1 (ko) 2016-09-08 2018-03-15 가온미디어 주식회사 공간적 구조 정보를 이용한 동기화된 다시점 영상의 부호화/복호화 방법 및 그 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101651478A (zh) * 2009-09-15 2010-02-17 电子科技大学 一种空时编码协作中继选择与功率分配联合方案
US20130188552A1 (en) * 2010-09-21 2013-07-25 Telefonaktiebolaget L M Ericsson (Publ) Relaying in mixed licensed and unlicensed carrier aggregation
CN102769938A (zh) * 2011-05-05 2012-11-07 英特尔移动通信有限公司 移动无线电通信设备及控制移动无线电通信设备的方法
CN103581877A (zh) * 2013-10-10 2014-02-12 南京邮电大学 一种基于终端直通通信的多中继通信方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3185612A4 *

Also Published As

Publication number Publication date
EP4084528A1 (en) 2022-11-02
JP2017524321A (ja) 2017-08-24
KR20170047295A (ko) 2017-05-04
US20170244468A1 (en) 2017-08-24
EP3185612B1 (en) 2022-12-28
CN105451282A (zh) 2016-03-30
US10326516B2 (en) 2019-06-18
JP6463477B2 (ja) 2019-02-06
EP3185612A4 (en) 2017-11-22
EP3185612A1 (en) 2017-06-28

Similar Documents

Publication Publication Date Title
WO2016026396A1 (zh) 一种中继终端重选的方法及设备
AU2022202091B2 (en) Realizing mobile relays for device-to-device (D2D) communications
EP3520482B1 (en) Handover to avoid delays in relaying data between a first and a second user equipment
JP6146832B2 (ja) デバイス間通信のハンドオーバのための方法及び装置
JP6599324B2 (ja) Ｍｂｍｓリレーデバイスを使用するマルチメディアブロードキャストマルチキャストサービスの管理
EP3707958A1 (en) User equipment, nodes and methods performed therein
CN113905397B (zh) 中继确定方法、配置方法、装置、终端及网络侧设备
KR20160120243A (ko) 단말간 직접 통신 방법 및 장치
CN104301955A (zh) 一种用户设备切换基站的方法及基站、用户设备
US20180092019A1 (en) User equipment apparatus
US20240121677A1 (en) Method and apparatus for handover and reestablishment in a wireless communication system
WO2011136104A1 (ja) 移動局及び無線制御装置
US20230189098A1 (en) Method and apparatus for wireless communication
US12598629B2 (en) Methods and apparatuses for exchanging configuration information regarding a MRB in a MR-DC scenario
KR101353275B1 (ko) 사용자 장비와 무선 네트워크 제어기 간의 통신 처리 방법과 그 무선 네트워크 제어기를 제어하는 프로그램
CN117280750A (zh) 用于ue到网络中继切换的方法及设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15834537

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 15501808

Country of ref document: US

ENP Entry into the national phase

Ref document number: 2017529128

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2015834537

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2015834537

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 20177007698

Country of ref document: KR

Kind code of ref document: A