WO2022205182A1 - 侧行链路通信方法、设备及存储介质 - Google Patents

侧行链路通信方法、设备及存储介质 Download PDF

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Publication number
WO2022205182A1
WO2022205182A1 PCT/CN2021/084688 CN2021084688W WO2022205182A1 WO 2022205182 A1 WO2022205182 A1 WO 2022205182A1 CN 2021084688 W CN2021084688 W CN 2021084688W WO 2022205182 A1 WO2022205182 A1 WO 2022205182A1
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WIPO (PCT)
Prior art keywords
terminal device
time
time interval
information
resource
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PCT/CN2021/084688
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English (en)
French (fr)
Inventor
冷冰雪
卢前溪
杜忠达
张世昌
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2021/084688 priority Critical patent/WO2022205182A1/zh
Priority to EP21933846.4A priority patent/EP4319369A1/en
Priority to CN202180080195.3A priority patent/CN116636279A/zh
Publication of WO2022205182A1 publication Critical patent/WO2022205182A1/zh
Priority to US18/474,437 priority patent/US20240015846A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the embodiments of the present application relate to communication technologies, and in particular, to a sidelink communication method, device, and storage medium.
  • the sidelink transmission technology (sidelink, SL) is different from the traditional cellular system in which the communication data is received or sent through the base station.
  • the sidelink system adopts the terminal-to-terminal direct communication method, so it has higher spectral efficiency and Lower transmission delay.
  • Sidelink communication includes two transmission modes, one is that the terminal device uses the sidelink resources authorized by the network device for the terminal device to transmit data, and the other is that the terminal device autonomously selects transmission resources from the preconfigured resource pool. Perform sidelink transmissions.
  • the current transmission method based on the terminal equipment autonomously selecting resources in the resource pool for sidelink transmission is prone to problems such as large interference and transmission failure, and the transmission performance needs to be improved.
  • Embodiments of the present application provide a sidelink communication method, device, and storage medium, so as to improve the reliability of communication
  • an embodiment of the present application may provide a sidelink communication method, the method comprising:
  • the first terminal device sends assistance information to the second terminal device within the first time interval, where the assistance information is used to indicate a resource set, and the resource set includes one or more of the following:
  • the resources that the first terminal device recommends and selects the resources that are not recommended by the first terminal device, or the conflicting resources
  • the first time interval is within the activation time of the discontinuous reception DRX operation of the second terminal device.
  • the embodiments of the present application may further provide a sidelink communication method, the method includes:
  • the second terminal device receives assistance information of the first terminal device within a first time interval, where the first time interval is a time interval for sending the assistance information, the assistance information is used to indicate a resource set, and the resource Collections include one or more of the following:
  • the first time interval is within the activation time of the discontinuous reception DRX operation of the second terminal device.
  • an embodiment of the present application may further provide a terminal device, where the communication apparatus is configured on the first terminal device, including:
  • a processing unit configured to determine a first time interval, where the first time interval is within the activation time of the discontinuous reception DRX operation of the second terminal device;
  • a transceiver unit sending assistance information to the second terminal device within a first time interval, where the assistance information is used to indicate a resource set, and the resource set includes one or more of the following:
  • the embodiments of the present application may further provide a network device, where the communication device is configured on the second terminal device, including:
  • a transceiver unit receiving assistance information from a first terminal device within a first time interval, where the first time interval is a time interval for sending the assistance information, the assistance information is used to indicate a resource set, the resource Collections include one or more of the following:
  • the processing unit determines, according to the resource set, a resource for sending data.
  • the embodiments of the present application may further provide a terminal device, including:
  • processors memories, interfaces for communicating with network devices
  • the memory stores computer-executable instructions
  • the processor executes the computer-executable instructions stored in the memory, so that the processor performs the sidelink communication method as provided in any one of the first aspect or the second aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the first aspect or the first aspect.
  • the sidelink communication method according to any one of the two aspects.
  • an embodiment of the present application provides a program, when the program is executed by a processor, for executing the sidelink communication method described in any one of the first aspect or the second aspect.
  • the above-mentioned processor may be a chip.
  • an embodiment of the present application provides a computer program product, including program instructions, where the program instructions are used to implement the sidelink communication method described in any one of the first aspect or the second aspect.
  • an embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the sidelink communication method described in any one of the first aspect or the second aspect.
  • the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the first aspect. Or the sidelink communication method according to any one of the second aspect.
  • a storage module eg, memory
  • the storage module is used for storing instructions
  • the processing module is used for executing the instructions stored in the storage module
  • the execution of the instructions stored in the storage module causes the processing module to perform the first aspect.
  • the sidelink communication method according to any one of the second aspect.
  • Fig. 1 is a schematic diagram of a communication system applicable to the present application
  • Fig. 2 is another schematic diagram of the communication system applicable to the present application.
  • FIG. 3 is a schematic flowchart of a sidelink communication method provided by the present application.
  • FIG. 4 is a schematic flowchart of a sidelink communication method provided by the present application.
  • FIG. 5 is a schematic flowchart of a sidelink communication method provided by the present application.
  • FIG. 6 is a schematic diagram of the time relationship between the assistance information provided by the present application and the first time-frequency resource
  • FIG. 7 is a schematic flowchart of a sidelink communication method provided by the present application.
  • FIG. 8 is a schematic diagram of a communication device provided by the present application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunications system
  • WiMAX worldwide interoperability for microwave access
  • 5G fifth generation
  • 5G new wireless
  • NR new radio
  • the terminal device in this embodiment of the present application may be referred to as a terminal, user equipment (UE), and the terminal device may be an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, or a mobile device , user terminal, terminal equipment, wireless communication device, user agent or user equipment.
  • UE user equipment
  • the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks or in the future evolution of the public land mobile network (PLMN) equipment, etc., which are not limited in this embodiment of the present application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • PLMN public land mobile network
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • the terminal device may also be a terminal device in a car networking system or an internet of things (internet of things, IoT) system.
  • IoT internet of things
  • the network device in this embodiment of the present application may be a device used to communicate with a terminal device, and the network device may be a base station (base transceiver station, BTS) in a GSM or CDMA system, or a base station (nodeB, BTS) in a WCDMA system NB), it can also be an evolved base station (evolutional nodeB, eNB or eNodeB) in the LTE system, it can also be a wireless controller in the cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can It is a relay station, an access point, a vehicle-mounted device, and a network device in a 5G network or a network device in a future evolved PLMN network, etc., which are not limited in the embodiments of the present application.
  • BTS base transceiver station
  • nodeB, BTS base station
  • eNodeB evolved base station
  • CRAN cloud radio access network
  • the network device can It is a relay station, an access
  • the sidelink transmission technology (sidelink, SL) is different from the traditional cellular system in which the communication data is received or sent through the base station.
  • the sidelink system adopts the terminal-to-terminal direct communication method, so it has higher spectral efficiency and Lower transmission delay.
  • Two transmission modes are defined in the 3rd generation partnership project (3GPP): Mode A and Mode B.
  • FIG. 1 is a schematic diagram of a communication system 100 employing sidelink transmission Mode A.
  • the side link (SL) communication resources of the terminal device 102 or the terminal device 103 are allocated by the network device 101.
  • the network device 101 provides the terminal device 102 with a downlink (DL) link.
  • the SL resource is authorized, and the terminal device 102 sends data to the terminal device 103 on the authorized SL resource.
  • the terminal device 103 may also send data to the terminal device 102 on the SL resource authorized by the network device 101 for it.
  • the network device 101 may allocate SL resources for single transmission to the terminal device, and may also allocate SL resources for semi-static transmission to the terminal device.
  • FIG. 2 is a schematic diagram of the communication system 200 using the sidelink transmission mode B.
  • the terminal equipment 202 and the terminal equipment 203 are preconfigured with a sidelink resource pool.
  • the terminal device 202 or the terminal device 203 selects a resource in the resource pool to perform sidelink data transmission.
  • D2D device-to-device
  • V2X vehicle to everything
  • D2D communication is divided into different stages for research.
  • ProSe Proximity based service
  • the resource pool is not continuous in the time domain, so that the UE can send/receive data discontinuously on the sidelink, thereby achieving the effect of power saving.
  • V2X since the vehicle system has continuous power supply, power efficiency is not the main problem, but the delay of data transmission is the main problem. Therefore, the terminal equipment is required to perform continuous transmission and reception in system design.
  • NR V2X is not limited to broadcast scenarios, but is further extended to unicast and multicast scenarios, and the application of V2X is studied in these scenarios.
  • NR V2X Similar to LTE V2X, NR V2X also defines the above two resource authorization modes, mode 1 (mode-1) and mode 2 (mode-2); further, users may be in a mixed mode, that is, they can use both Mode-1 is used to obtain resources, and mode-2 can be used to obtain resources at the same time.
  • the resource acquisition is indicated by a sidelink grant, that is, a sidelink grant indicates the corresponding physical sidelink control channel (PSCCH) and physical sidelink shared channel (PSSCH) resources time-frequency location.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • NR V2X introduces HARQ retransmission based on feedback, which is not limited to unicast communication, including multicast communication;
  • NR-V2X In NR-V2X, some new features are introduced, such as support for a large number of aperiodic services, an increase in the number of retransmissions, and a more flexible resource reservation period. These characteristics have a great influence on the mode of terminal autonomous resource selection. Therefore, based on Mode 4 in LTE-V2X, 3GPP re-discussed and designed a resource selection scheme suitable for NR-V2X, denoted as Mode 2.
  • Mode 2 the terminal equipment selects the resource pool that is not reserved by other terminal equipment or is not reserved by other terminal equipment or is selected by other terminal equipment by decoding the sidelink control information (SCI) sent by other terminal equipment and measuring the received power of the sidelink. A resource reserved by the device but receiving lower power.
  • SCI sidelink control information
  • the resource selection algorithm of NR-V2X mode 2 is divided into two main steps, that is, the terminal device first determines a candidate resource set, and then selects resources
  • Step 1 The terminal device determines a candidate resource set.
  • the terminal device takes all the available resources in the resource selection window as the resource set A. First, the terminal device needs to determine whether the resource is reserved by other terminal devices according to the listening result in the resource listening window. The terminal device performs resource exclusion by measuring the reference signal received power (RSRP) of the resource according to the unlistened time slot and the first-order SCI detected. When the number of remaining resources is less than a certain ratio, the terminal device will increase the RSRP threshold by 3dB, and repeat step 1 until the number of remaining resources in the resource set A is greater than or equal to the ratio.
  • RSRP reference signal received power
  • the value of this ratio in NR-V2X is more flexible, and its possible values are ⁇ 20, 35, 50 ⁇ %, and the specific ratio is based on the resource pool.
  • the units are configured or preconfigured by the network.
  • the resource set A after resource exclusion is the candidate resource set of the terminal device.
  • Step 2 The terminal device selects a transmission resource from the candidate resource set.
  • the terminal device randomly selects one or more transmission resources in the resource set A with moderate probability. It should be pointed out that when selecting the multiple transmission resources, the following constraints in the time domain must be satisfied:
  • the terminal device should enable the selected certain retransmission resource to be indicated by the first-order SCI sent previously.
  • the above exceptions include the situation that the terminal device cannot select resources from the resource set A that satisfy the time domain restriction after the resource exclusion is performed. And, it also includes the situation that the terminal equipment abandons transmission due to factors such as resource preemption, congestion control, and conflict with uplink services, so that the transmission resources of a certain retransmission are not indicated by the first-order SCI sent before.
  • the terminal device should guarantee any two selected time-frequency resources. If the previous transmission resource requires HARQ feedback, the two resources are separated by at least Z in the time domain.
  • the resource selection cannot meet the time domain restriction, such as when the service's packet delay budget (PDB) is short but the number of retransmissions is large, depending on the implementation of the terminal device, some retransmission resources can be given up. Or deactivate HARQ feedback for certain transmissions.
  • PDB packet delay budget
  • Universal Terrestrial Radio Access Network-UE (universal terrestrial radio access network-UE, Uu) DRX operation
  • the terminal device will monitor the physical downlink control channel (PDCCH) discontinuously according to the DRX configuration to achieve the purpose of saving power.
  • PDCCH physical downlink control channel
  • the terminal device When the PDCCH carries the C-RNTI, CI-RNTI, CS-RNTI corresponding to the terminal device, When INT-RNTI, SFI-RNTI, SP-CSI-RNTI, TPC-PUCCH-RNTI, TPC-PUSCH-RNTI, TPC-SRS-RNTI and AI-RNTI are used, the terminal device will make corresponding DRX operations according to the control information.
  • the network controls the DRX operation of the terminal device by configuring a series of parameters, including:
  • drx-onDurationTimer drx-SlotOffset, drx-InactivityTimer, drx-RetransmissionTimerDL, drx-RetransmissionTimerUL, drx-LongCycleStartOffset, drx-ShortCycle(optional): the Short DRX cycle, drx-ShortCycleTimer(optional), HARQ-RTT-TimerDL, drx -HARQ-RTT-TimerUL, ps-Wakeup(optional), ps-TransmitOtherPeriodicCSI(optional), ps-TransmitPeriodicL1-RSRP(optional).
  • the terminal device will be in the active time of DRX operation in the following cases:
  • the terminal equipment at the transmitting end there may be sidelink resources selected by the terminal equipment at the transmitting end through interference measurement, and there may be relatively large interference at the terminal equipment at the receiving end.
  • there is an interfering node around the receiving terminal equipment but the transmitting terminal equipment cannot detect the interfering node to the receiving terminal equipment, that is, the interfering node is a hidden node to the transmitting terminal equipment.
  • the target terminal is in the sending state on the resource and cannot receive data on the resource, which will cause mutual interference, thereby causing resource waste, problems such as transmission delay.
  • the inter-UE coordination mechanism between terminal devices performing sidelink communication can be used to exchange sidelink transmission resource conditions, so as to reduce the number of different resources due to selection.
  • the introduction of the sidelink DRX technology will make the terminal equipment in a discontinuous reception state.
  • the sidelink communication method provided by the present application enables the transmission of cooperation information between terminal devices to occur at the active time (active time) of the DRX operation (DRX operation) of the receiver UE, which can ensure that the cooperation between users is effective and successfully completed.
  • the sidelink communication method provided by the present application will be described below with reference to the accompanying drawings.
  • FIG. 3 is a schematic flowchart of a sidelink communication method 300 provided by the present application.
  • the terminal device A in FIG. 3 communicates with the terminal device B, wherein before the terminal device B (ie, an example of the second terminal device) needs to send data to the terminal device A (ie, an example of the first terminal device), the terminal device A and terminal device B may use the communication method provided by this application to negotiate communication resources (cooperation between users).
  • the sidelink communication method 200 shown in FIG. 3 includes but is not limited to the following steps.
  • terminal device A sends assistance information to terminal device B.
  • terminal device B receives assistance information (assistance information, AI) from terminal device A.
  • assistance information assistance information, AI
  • the assistance information is used to indicate the resource set.
  • the resource collection includes one or more of the following resources:
  • the resources that the terminal device A recommends (preferred), the resources that the terminal device A does not recommend (not preferred), or the conflicting resources.
  • the resource collection includes one or more of the following resources:
  • Terminal device A recommends resources selected by terminal device B, terminal device A does not recommend resources selected by terminal device B, or resources for which terminal device A detects a resource conflict.
  • the resource set includes time-frequency resources recommended by terminal device A to be selected by terminal device B.
  • the terminal device A determines the resource set A according to the interference information obtained by measurement and/or the duplex mode (eg, full-duplex mode, half-duplex mode, etc.) of the terminal device A, and the resources included in the resource set A are terminals The resources detected by the device A that are not reserved by other devices and/or have less interference and/or the resources that the terminal device A is in a receiving state. So that after receiving the assistance information, the terminal device B can select the resources in the resource set A to communicate with the terminal device A in priority.
  • the present application is not limited to this.
  • the resource set includes time-frequency resources that terminal device A does not recommend terminal device B to select.
  • the terminal device A determines the resource set B according to the interference information obtained by measurement and/or the duplex mode (eg, full-duplex mode, half-duplex mode, etc.) of the terminal device A, and the resources included in the resource set B are terminals Resources detected by device A that are reserved and/or interfered by other devices, and/or resources that terminal device A is in a sending state and cannot receive.
  • the resource set B may include time-frequency resources for which the terminal device A detects a conflict. If the terminal device A detects that the RSRP on a part of the communication resources is high, it is considered that the communication resources are in conflict. For example, it may be used by a neighboring node.
  • the resource set B indicated by the assistance information includes the resource to notify terminal device B that it is not recommended to use the resource for communication between terminal device A and terminal device B. After the terminal device B receives the assistance information, it can preferentially select resources other than the resource set B to communicate with the terminal device A.
  • the present application is not limited to this.
  • the resource set includes time-frequency resources that terminal device A recommends to select by terminal device B and time-frequency resources that terminal device B does not recommend to select.
  • the assistance information sent by the terminal device A not only instructs the terminal device A to recommend the selected resource set A, but also instructs the terminal device A not to recommend the selected resource set B.
  • the terminal device B can give priority to selecting the resources in the resource set A to communicate with the terminal device A, and if the terminal device B detects that the resources in the resource set A interfere greatly with the terminal device B (eg , RSRP is greater than or equal to a preset threshold, etc.), terminal device B can select resources other than resource set A. At this time, it can try to avoid selecting resources in resource set B not recommended by terminal device A, so as to improve the The reliability of communication between A and terminal device B.
  • the present application is not limited to this.
  • terminal device A sends assistance information to terminal device B.
  • the resources used to carry the assistance information are periodic resources, or in other words, the assistance information is periodic information, and the terminal device A sends the assistance information to the terminal device B in each period. That is, the condition for terminal device A to send assistance information to terminal device B may include: the periodic triggering of the assistance information from terminal device A to send assistance information to terminal device B.
  • the present application is not limited to this.
  • the sending of assistance information by terminal device A to terminal device B may be event-triggered. Send the assistance information to terminal device B.
  • the present application is not limited to this.
  • the terminal device B sends data to the terminal device A on the third time-frequency resource.
  • the terminal device B may determine the third time-frequency resource according to the resource set indicated by the assistance information and the candidate resources determined by the terminal device B, and in S320 at the third time Send data to terminal device A on the frequency resource.
  • terminal device B may determine a candidate resource set based on the above resource selection mode-2, and refer to the resource set indicated by the assistance information, and select the resource recommended by terminal device A in the candidate resource set (for example, the resource indicated by the assistance information).
  • the set includes the resource recommended and selected by the terminal device A) as the third time-frequency resource.
  • the third time-frequency resource is determined in the remaining resources after excluding the resources not recommended for selection by terminal device A from the candidate resource set (for example, the resource set indicated by the assistance information includes resources recommended for selection by terminal device A).
  • the present application is not limited to this.
  • the terminal device B may also determine the candidate resource set in other ways, and determine the third time-frequency resource with reference to the resource set indicated by the assistance information.
  • the terminal equipment performing sidelink communication can implement resource selection negotiation by assisting the exchange of information, so that the transmitting end equipment that selects the communication resource can select the resource with better communication quality for both parties to communicate, and can Improve communication reliability and reduce data retransmission, thereby reducing data transmission delay.
  • FIG. 4 is a schematic flowchart of a sidelink communication method 400 provided by the present application.
  • the terminal device A in FIG. 4 performs sidelink communication with the terminal device B, wherein the terminal device B is performing the discontinuous reception DRX operation, that is, the terminal device B is configured within a period of time (ie, the activation of DRX) It is in the receiving state during the active time), that is, it can receive signals from other terminal devices during the DRX activation time, and it is in a dormant state for a period of time (ie, the inactive time of the DRX operation), maintaining low power, and stops receiving signals from other terminal devices. Signals from terminal equipment.
  • the terminal device B is performing the discontinuous reception DRX operation, that is, the terminal device B is configured within a period of time (ie, the activation of DRX) It is in the receiving state during the active time), that is, it can receive signals from other terminal devices during the DRX activation time, and it is in a dor
  • the terminal device performing the DRX operation may also be referred to as the terminal device being in the DRX state
  • the activation time of the DRX operation may also be referred to as the active state
  • the inactive time may also become the inactive state, which is limited in this application.
  • terminal device A Before terminal device B (ie, an example of the second terminal device) needs to send data to terminal device A (ie, an example of the first terminal device), terminal device A and terminal device B can use the
  • the resource negotiation is performed by the sidelink communication method of the terminal device A, wherein the inter-user cooperation process can be triggered by the terminal device A.
  • the sidelink communication method shown in FIG. 4 includes but is not limited to the following steps.
  • the terminal device A determines that the sending condition of the assistance information is satisfied.
  • the condition for the terminal device A to send the assistance information to the terminal device B includes the activation time when the terminal device B enters the DRX.
  • terminal device A determines that terminal device B is at the activation time of DRX within the first time interval, and terminal device A determines that the conditions for sending assistance information are satisfied within the first time interval, then terminal device A determines to send the terminal to the terminal within the first time interval.
  • Device B sends assistance information.
  • the present application is not limited to this.
  • the terminal device A receives the first configuration information, where the first configuration information is used to configure the DRX operation of the terminal device B, or the first configuration information is the configuration information of the DRX operation of the terminal device B.
  • the terminal device A can determine the activation time of the DRX operation of the terminal device B according to the configuration information of the DRX operation, so that the assistance information can be sent to the terminal device B within the activation time of the DRX operation of the terminal device B.
  • the configuration information of the DRX operation can be used to configure one or more of the period of the DRX operation of the terminal device B, the start position offset, or the running duration of the timer related to the activation time of the DRX operation. item.
  • the above-mentioned timer related to the activation time of the DRX operation of terminal device B includes but is not limited to one or more of the following:
  • the first timer the first timer starts to run at the starting moment of a DRX cycle, for example, the first timer can be written as DRX-on_duration timer, but the application is not limited to this;
  • the second timer starts to run when the new sidelink message is received, after the sidelink new message is received, or a period of time after the sidelink new message is received,
  • the second timer can be written as DRX-inactivity timer, but the application is not limited to this;
  • the third timer, the running duration of the third timer is the maximum time interval before the retransmission data is received.
  • the third timer can be written as DRX-retransmission timer, but the present application is not limited to this.
  • the terminal device B When at least one of the first timer, the second timer or the third timer is running, the terminal device B is in the active time of the DRX operation.
  • the terminal device A may determine that the terminal device B is in the activation time of the DRX operation according to at least one of the first timer, the second timer or the third timer is running.
  • the first configuration information may come from terminal device B.
  • the terminal device B After the terminal device A and the terminal device B establish a sidelink connection, the terminal device B notifies the terminal device A of the activation time of the DRX operation of the terminal device B through the first configuration information.
  • the present application is not limited to this.
  • the first configuration information may come from a network device.
  • the network device accessed by the terminal device A sends the first configuration information to the terminal device A, and notifies the terminal device A of the activation time of the DRX operation of the terminal device B through the first configuration information.
  • the present application is not limited to this.
  • terminal device A determines that terminal device B is at the activation time of DRX.
  • the request message to be replied may be a channel state information (CSI) request message.
  • CSI channel state information
  • terminal device A After terminal device A receives the CSI request message from terminal device B, terminal device A can determine that terminal device B is waiting for the terminal device B. The CSI of the device A feeds back information, therefore, the terminal device B is at the activation time of the DRX operation, but the present application is not limited to this.
  • the terminal device B is in the activation time of the DRX operation.
  • condition for the terminal device A to send the assistance information to the terminal device B may further include the periodic condition or the event trigger condition described in the embodiment shown in FIG. 3 .
  • terminal device A sends assistance information to terminal device B.
  • the terminal device A After the terminal device A determines in S410 that it is within the first time interval, the terminal device A sends the assistance information to the terminal device B within the first time interval. That is, the terminal device A sends the assistance information to the terminal device B when the terminal device A waits for the terminal device B to be in the active state of DRX. Since the terminal device B is the activation time of the DRX operation in the first time interval, that is, the terminal device B is in the receiving state, correspondingly, the assistance information from the terminal device A is received.
  • the terminal device B sends data to the terminal device A on the third time-frequency resource.
  • Terminal device B may determine a third time-frequency resource according to the assistance information and the candidate resource determined by terminal device B, and send data to terminal device A on the third time-frequency resource.
  • the terminal device A determines the activation time of the DRX operation of the terminal device B, and sends the assistance information to the terminal device B within the activation time, which can improve the probability of the assistance information being successfully received, so that the terminal device B can select and match based on the assistance information.
  • the side link resources of the terminal device A can improve the reliability of communication.
  • FIG. 5 is a schematic flowchart of a sidelink communication method 500 provided by an embodiment of the present application.
  • Terminal device A in FIG. 5 performs sidelink communication with terminal device B.
  • the terminal device A may trigger the inter-user cooperation process.
  • the sidelink communication method shown in FIG. 5 includes but is not limited to the following steps.
  • Terminal device B sends first indication information to terminal device A, where the first indication information is used to indicate the first time-frequency resource.
  • the terminal device A receives the first indication information from the terminal device B, where the first time-frequency resource is the reserved resource of the terminal device B, that is, the time-frequency resource reserved by the terminal device B for carrying data resource.
  • the first indication information may be SCI.
  • the terminal device B notifies the terminal device A through the first indication information that the reserved resources for carrying the data, that is, the first time-frequency resources.
  • the terminal device A judges whether the first time-frequency resource is suitable for receiving data.
  • terminal device A can receive the SCI of other terminal devices (that is, terminal devices other than terminal device B), and determine the resources reserved by other terminal devices. If the resources reserved by other terminal devices conflict with the first time-frequency resource, the terminal Device A can predict the magnitude of the interference, and when the interference is less than the preset threshold, terminal device A can determine to receive data on the first time-frequency resource; when the interference is greater than the preset threshold, terminal device A The resource negotiation process between users can be triggered, and the terminal device B is notified through the assistance information to recommend or not recommend the selected resource set.
  • the present application is not limited to this.
  • terminal device A is in half-duplex mode. If terminal device A is in the sending state on the first time-frequency resource, terminal device A cannot receive data from terminal device B on the first time-frequency resource, and terminal device A can The resource negotiation process between users is triggered, and the terminal device B is notified of the resource set that is recommended or not recommended to be selected through the assistance information.
  • the present application is not limited to this.
  • the terminal device A determines that the sending condition of the assistance information is satisfied.
  • the condition for the terminal device A to send the assistance information to the terminal device B includes: the terminal device A determines that the first time-frequency resource is not suitable for receiving data. When the terminal device A determines that the first time-frequency resource is not suitable for receiving data, it notifies the terminal device B of the resource set that is recommended to be selected or not recommended to be selected through the assistance information.
  • the conditions for the terminal device A to send the assistance information to the terminal device B further include: the terminal device A can send the assistance information before the first time-frequency resource, that is, the time interval A during which the terminal device A sends the assistance information is at the first time. before the frequency resource.
  • the minimum time interval required for terminal device B to perform resource reselection is the second time interval
  • the conditions for terminal device A to send assistance information to terminal device B also include: time interval A (that is, an example of the first time interval) The interval between the end moment of ) and the start moment of the first time-frequency resource is greater than or equal to the second time interval.
  • the terminal device A sends the assistance information within the time interval A.
  • terminal device B needs at least the second time interval to reselect the resource bearing data, and terminal device A needs to complete sending the assistance information at a time greater than or equal to the second time interval before the start time of the first time-frequency resource, so that After receiving the assistance information, the terminal device B has enough time to reselect the resource bearing the data.
  • the start time of the first time-frequency resource is t4 and the end time is t5.
  • the terminal device A can send the cooperation before time t4, which is greater than or equal to the second time interval, that is, before time t3 information
  • the terminal device B can perform resource reselection.
  • the terminal device A can send assistance information within the time interval A, the start time of the time interval A is t1, the end time is t2, and the time t2 is before the time t3, that is, t4-t2 is greater than the second time interval, then the terminal device A determines that the conditions for sending assistance information are met.
  • the terminal device B is a terminal device that performs a DRX operation. It can be specified that the terminal device B is in the activation time of the DRX operation in the time interval A, and the terminal device A sends the assistance information to the terminal device B in the time interval A.
  • the end time of the time interval A and the start time of the first time-frequency resource are different. The interval between them is greater than or equal to the above-mentioned second time interval.
  • the length of the second time interval is T3
  • the length of the first time interval is Tx
  • the start time of the first time-frequency resource is t1
  • the range of time interval A is [t1-T3-Tx, t1-T3] .
  • the present application is not limited to this.
  • terminal device A sends assistance information to terminal device B.
  • the terminal device A After the terminal device A determines in S520 that the transmission condition of the cooperation information is satisfied, the terminal device A sends the assistance information to the terminal device B within the time interval A.
  • the terminal device B sends data to the terminal device A on the third time-frequency resource.
  • Terminal device B may determine a third time-frequency resource according to the assistance information and the candidate resource determined by terminal device B, and send data to terminal device A on the third time-frequency resource.
  • FIG. 7 is a schematic flowchart of a sidelink communication method 700 provided by an embodiment of the present application.
  • Terminal equipment A in Figure 7 is in sidelink communication with terminal equipment B.
  • the terminal device B ie, an example of the second terminal device
  • the inter-user cooperation process may be triggered by the terminal device B.
  • the sidelink communication method shown in FIG. 7 includes but is not limited to the following steps.
  • Terminal device B sends second indication information to terminal device A, where the second indication information is used to trigger terminal device A to send assistance information.
  • terminal device A receives the second indication information from terminal device B.
  • the terminal device A determines, according to the received second indication information, that the terminal device B triggers the terminal device A to send the assistance information.
  • the second indication information may be a specific sequence for triggering assistance information.
  • the second indication information may be a reference signal or a preamble sequence.
  • the terminal device A may, through correlation detection, determine that the terminal device B triggers the sending of assistance information after detecting the specific sequence.
  • the present application is not limited to this.
  • the second indication information may be carried in at least one of the following information:
  • SCI physical sidelink feedback channel
  • MAC medium access control
  • CE control element
  • RRC radio resource control
  • the second indication information includes one or more of the following information:
  • the configuration information of the resource selection window of the terminal device B the delay requirement information of the assistance information, and the configuration information of the time interval B (ie, an example of the first time interval).
  • the time interval B is the time interval during which the terminal device B can receive the assistance information.
  • the terminal device A may send assistance information within the time interval B.
  • the second indication information indicates the configuration information of the resource selection window of the terminal device B
  • the configuration information of the resource selection window may indicate the start time and duration of the resource selection window of the terminal device B, or may indicate the terminal device B The start time and end time of the resource selection window.
  • the terminal device A obtains the configuration information of the resource selection window of the terminal device B through the second indication information, it can determine, in the resource selection window of the terminal device B, those recommended by the terminal device A, those that are not recommended for selection, or those that have detected conflicts. resource.
  • the present application is not limited to this.
  • the second indication information includes delay requirement information of the assistance information
  • the delay requirement information is used to indicate the maximum time delay of the assistance information, that is, the delay requirement information may indicate a period of time, and the duration is the duration of the assistance information.
  • the maximum time delay the terminal device A can send the assistance information before the maximum time delay of the assistance information according to the delay demand information, so as to ensure the timeliness of the assistance information. If the terminal device A cannot send the assistance information before the maximum time delay of the assistance information, the terminal device A may not send the assistance information, so as to avoid waste of resources.
  • the present application is not limited to this.
  • the second indication information includes configuration information of time interval B.
  • the configuration information of time interval B may indicate the start time and duration of time interval B, or may indicate the start time and duration of time interval B. Termination time.
  • the terminal device A may determine the time interval at which the terminal device B receives the assistance information according to the configuration information of the time interval B, so as to send the assistance information within the time interval B. By making the terminal device A and the terminal device B reach a consensus on the time interval where the assistance information is located, the waste of resources can be avoided and the reliability of the communication can be improved.
  • the present application is not limited to this.
  • the terminal device B is a terminal device that performs a DRX operation.
  • the terminal device B is at the activation time of the DRX operation within the time interval B after sending the second indication information, so as to receive the assistance information sent by the terminal device A.
  • the second indication information is carried on a second time-frequency resource, and there is a third time interval between the end moment of the second time-frequency resource and the start moment of the time interval B, and the third time interval is greater than or equal to the time required for the terminal device A to process the cooperation information.
  • the terminal device A after the terminal device A receives the second indication information, it still needs a period of time to process the assistance information.
  • the time required to process the assistance information may include, but is not limited to, the time for responding to the second indication information, determining the resource set (ie determine the time of the resources contained in the resource set), and/or encode and transmit the assistance information.
  • the present application is not limited to this.
  • the terminal device B may not receive the assistance information or activate the DRX operation (ie, in the inactive time of the DRX operation) to reduce power consumption.
  • the time required for the terminal device A to process the cooperation information may be the capability information of the terminal device specified in the protocol, or the terminal device A and the terminal device B may obtain the terminal device A to process the cooperation information through information exchange. required time.
  • the time required for the terminal device A to process the cooperation information may be equal to the minimum time for the terminal device A to process the retransmitted data.
  • the fourth time interval between the end moment of the second time-frequency resource and the end moment of the time interval B, where the fourth time interval is less than or equal to the maximum time delay of the assistance information.
  • the terminal device B may receive the assistance information before the maximum time delay of the assistance information, or at the active time of the DRX operation to receive the assistance information. After the maximum time delay, since the assistance information does not meet the delay requirement, the terminal device B may not receive the assistance information, or enter the inactive time of the DRX operation. to reduce power consumption.
  • the end time of the second time-frequency resource is t2
  • the time required for the terminal device A to process the cooperation information is T4
  • the maximum time delay of the assistance information is T5
  • the range of the time interval B can be [t2 +T4, t2+T5].
  • the present application is not limited to this.
  • the time interval B may be greater than or equal to the time interval between the PSSCH and the PSFCH to which the feedback information of the PSSCH is carried.
  • terminal device A sends assistance information to terminal device B.
  • the terminal device B sends data to the terminal device A on the third time-frequency resource.
  • the time interval and the duration both represent the length of a period of time, and the time interval can be replaced by a duration, and the duration can also be replaced by a time interval, which is not limited in this application.
  • the terminal equipment performing sidelink communication can implement resource selection negotiation by assisting the exchange of information, so that the transmitting end equipment that selects the communication resource can select the resource with better communication quality for both parties to communicate, and can Improve communication reliability and reduce data retransmission, thereby reducing data transmission delay.
  • sending assistance information to the terminal equipment within the DRX operation activation time of the terminal equipment can improve the probability of the assistance information being successfully received, so that the terminal equipment can select sidelink resources based on the assistance information , which can improve the reliability of communication.
  • FIG. 8 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application.
  • the communication apparatus 800 may include a processing unit 810 and a transceiver unit 820 .
  • the communication apparatus 800 may correspond to the first terminal device in the above method embodiments, that is, the UE, or a chip configured (or used in) the first terminal device.
  • the communication apparatus 800 may correspond to the first terminal device in the methods 300 , 400 , 500 and 700 according to the embodiments of the present application, and the communication apparatus 800 may include a device for executing FIG. 3 , FIG. 4 , FIG. 5 , and FIG. A unit of the method performed by the first terminal device in the methods 300, 400, 500, and 700 in 7.
  • each unit in the communication device 800 and the above-mentioned other operations and/or functions are to implement the corresponding processes of the methods 300 , 400 , 500 and 700 in FIG. 3 , FIG. 4 , FIG. 5 , and FIG. 7 , respectively.
  • the transceiver unit 820 in the communication apparatus 800 may be an input/output interface or circuit of the chip.
  • the processing unit 810 may be a processor in a chip.
  • the processing unit 810 of the communication apparatus 800 may be used to process instructions or data to implement corresponding operations.
  • the communication device 800 may further include a storage unit 830, and the storage unit 830 may be used to store instructions or data, and the processing unit 810 may execute the instructions or data stored in the storage unit, so as to enable the communication device to implement corresponding operations
  • the transceiver unit 820 in the communication device 800 in the communication device 800 may correspond to the transceiver 910 in the first terminal device 900 shown in FIG. 9
  • the storage unit 830 may correspond to the first terminal device 910 shown in FIG. 9 .
  • a memory in the terminal device 900 may be used to store instructions or data
  • the processing unit 810 may execute the instructions or data stored in the storage unit, so as to enable the communication device to implement corresponding operations
  • the transceiver unit 820 in the communication device 800 in the communication device 800 may correspond to the transceiver 910 in the first terminal device 900 shown in FIG. 9
  • the storage unit 830 may correspond to the first terminal device 910 shown in FIG. 9 .
  • a memory in the terminal device 900 may be used to store instructions
  • the transceiver unit 820 in the communication apparatus 800 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it may correspond to the one shown in FIG. 9 .
  • the transceiver 910 in the first terminal device 900, the processing unit 810 in the communication apparatus 800 may be implemented by at least one processor, for example, may correspond to the processor 920 in the first terminal device 900 shown in FIG. 9,
  • the processing unit 810 in the communication device 800 may be implemented by at least one logic circuit.
  • the communication apparatus 800 may correspond to the second terminal device in the above method embodiments, that is, the UE, or a chip configured (or used) in the second terminal device.
  • the communication apparatus 800 may correspond to the second terminal device in the methods 300, 400, 500, and 700 according to the embodiments of the present application, and the communication apparatus 800 may include a device for executing FIG. 3, FIG. 4, FIG. 5, and FIG. A unit of the method performed by the second terminal device in the methods 300, 400, 500, and 700 in 7.
  • each unit in the communication device 800 and the above-mentioned other operations and/or functions are to implement the corresponding processes of the methods 300 , 400 , 500 and 700 in FIG. 3 , FIG. 4 , FIG. 5 , and FIG. 7 , respectively.
  • the transceiver unit 820 in the communication device 800 may be an input/output interface or circuit of the chip, and the communication device 800
  • the processing unit 810 may be a processor in a chip.
  • the processing unit 810 of the communication apparatus 800 may be used to process instructions or data to implement corresponding operations.
  • the communication device 800 may further include a storage unit 830, and the storage unit 830 may be used to store instructions or data, and the processing unit 810 may execute the instructions or data stored in the storage unit, so as to enable the communication device to implement corresponding operations , the transceiver unit 820 in the communication device 800 in the communication device 800 may correspond to the transceiver 910 in the second terminal device 900 shown in FIG. 9 , and the storage unit 830 may correspond to the first The memory in the terminal device 900.
  • the transceiver unit 820 in the communication apparatus 800 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it may correspond to the one shown in FIG. 9 .
  • the transceiver 910 in the second terminal device 900, the processing unit 810 in the communication apparatus 800 may be implemented by at least one processor, for example, may correspond to the processor 920 in the second terminal device 900 shown in FIG. 9
  • the processing unit 810 in the communication device 800 may be implemented by at least one logic circuit.
  • FIG. 9 is a schematic structural diagram of a terminal device 900 provided by an embodiment of the present application.
  • the terminal device 900 can be applied to the systems shown in FIG. 1 and FIG. 2 to perform the functions of the first terminal device or the second terminal device in the foregoing method embodiments.
  • the terminal device 900 includes a processor 920 and a transceiver 910 .
  • the terminal device 900 further includes a memory 930 .
  • the processor 920, the transceiver 910 and the memory can communicate with each other through an internal connection path to transmit control and/or data signals, the memory is used to store computer programs, and the processor 920 is used to execute the computer in the memory. program to control the transceiver 910 to send and receive signals.
  • the above-mentioned processor 920 and the memory can be combined into a processing device, and the processor 920 is configured to execute the program codes stored in the memory to realize the above-mentioned functions.
  • the memory can also be integrated in the processor 920 or be independent of the processor 920 .
  • the processor 920 may correspond to the processing unit in FIG. 8 .
  • the above transceiver 910 may correspond to the transceiver unit in FIG. 8 .
  • the transceiver 910 may include a receiver (or called receiver, receiving circuit) and a transmitter (or called transmitter, transmitting circuit). Among them, the receiver is used to receive the signal, and the transmitter is used to transmit the signal.
  • the terminal device 900 shown in FIG. 9 can implement various processes involving the terminal device in the embodiments of the methods 300 , 400 , 500 , and 700 in FIGS. 3 , 4 , 5 , and 7 .
  • the operations and/or functions of each module in the terminal device 900 are respectively to implement the corresponding processes in the foregoing method embodiments.
  • the above-mentioned processor 920 may be used to perform the actions described in the foregoing method embodiments that are implemented inside the terminal device, and the transceiver 910 may be used to perform the operations described in the foregoing method embodiments that the terminal device sends to or receives from the network device. action.
  • the transceiver 910 may be used to perform the operations described in the foregoing method embodiments that the terminal device sends to or receives from the network device. action.
  • the above-mentioned terminal device 900 may further include a power supply for providing power to various devices or circuits in the terminal device.
  • An embodiment of the present application further provides a processing apparatus, including a processor and an interface, where the processor is configured to execute the method in any of the foregoing method embodiments.
  • the above-mentioned processing device may be one or more chips.
  • the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), or a It is a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller unit). , MCU), it can also be a programmable logic device (PLD) or other integrated chips.
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • SoC system on chip
  • MCU microcontroller unit
  • MCU programmable logic device
  • PLD programmable logic device
  • each step of the above-mentioned method can be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.
  • the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the aforementioned processors may be general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components .
  • DSPs digital signal processors
  • ASICs application specific integrated circuits
  • FPGAs field programmable gate arrays
  • the methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code is executed by one or more processors, makes the device including the processor The method in the above embodiment is performed.
  • the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores program codes, and when the program codes are executed by one or more processors, the processing includes the processing
  • the device of the controller executes the method in the above-mentioned embodiment.
  • the present application further provides a system, which includes the aforementioned one or more network devices.
  • the system may further include one or more of the aforementioned terminal devices.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are only illustrative.
  • the division of the modules is only a logical function division. In actual implementation, there may be other division methods.
  • multiple modules may be combined or integrated into Another system, or some features can be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of modules may be in electrical, mechanical or other forms.

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Abstract

本申请实施例提供一种侧行链路通信方法、设备及存储介质，该方法包括：第一终端设备在第一时间间隔内向第二终端设备发送协助信息，该协助信息用于指示资源集合，该资源集合包括该第一终端设备推荐选择的、不推荐选择或检测到冲突的时频资源，其中，该第一时间间隔在该第二终端设备的非连续接收DRX操作的激活时间内。以期提高通信的可靠性。

Description

侧行链路通信方法、设备及存储介质 技术领域
本申请实施例涉及通信技术，尤其涉及一种侧行链路通信方法、设备及存储介质。
背景技术
侧行链路传输技术(sidelink，SL)与传统的蜂窝系统中通信数据通过基站接收或者发送的方式不同，侧行链路系统采用终端到终端直接通信的方式，因此具有更高的频谱效率以及更低的传输时延。侧行链路通信包括两种传输模式，一种是终端设备采用网络设备为该终端设备授权的侧行链路资源传输数据，另一种是终端设备在预配置的资源池中自主选取传输资源进行侧行链路传输。然而，目前基于终端设备在资源池中自主选择资源进行侧行链路传输的传输方式容易产生干扰大、传输失败等问题，传输性能还有待提高。
发明内容
本申请实施例提供一种侧行链路通信方法、设备及存储介质，以提高通信的可靠性
第一方面，本申请实施例可提供一种侧行链路通信方法，该方法包括：
第一终端设备在第一时间间隔内向第二终端设备发送协助信息，所述协助信息用于指示资源集合，所述资源集合包括以下一项或多项：
所述第一终端设备推荐选择的资源、所述第一终端设备不推荐的资源或冲突的资源，
其中，所述第一时间间隔在所述第二终端设备的非连续接收DRX操作的激活时间内。
第二方面，本申请实施例还可提供一种侧行链路通信方法，所述方法包括：
第二终端设备在第一时间间隔内接收第一终端设备的协助信息，所述第一时间间隔为用于发送所述协助信息的时间间隔，所述协助信息用于指示资源集合，所述资源集合包括以下一项或多项：
所述第一终端设备推荐的资源、所述第一终端设备不推荐的资源或冲突的资源，
其中，所述第一时间间隔在所述第二终端设备的非连续接收DRX操作的激活时间内。
第三方面，本申请实施例还可提供一种终端设备，所述通信装置配置于第一终端设备，包括：
处理单元，用于确定第一时间间隔，所述第一时间间隔在第二终端设备的非连续接收DRX操作的激活时间内；
收发单元，在第一时间间隔内向所述第二终端设备发送协助信息，所述协助信息用于指示资源集合，所述资源集合包括以下一项或多项：
所述第一终端设备推荐的资源、所述第一终端设备不推荐的资源或冲突的资源。
第四方面，本申请实施例还可提供一种网络设备，所述通信装置配置于第二终端设备，包括：
收发单元，在第一时间间隔内接收来自第一终端设备的协助信息，所述第一时间间隔为用于发送所述协助信息的时间间隔，所述协助信息用于指示资源集合，所述资源集合包括以下一项或多项：
所述第一终端设备推荐的资源、所述第一终端设备不推荐的资源或冲突的资源，其中，所述第一时间间隔在所述第二终端设备的非连续接收DRX操作的激活时间内；
处理单元，根据所述资源集合，确定用于发送数据的资源。
第五方面，本申请实施例还可提供一种终端设备，包括：
处理器、存储器、与网络设备进行通信的接口；
所述存储器存储计算机执行指令；
所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如第一方面或第二方面任一项提供的侧行链路通信方法。
第六方面，本申请实施例提供一种计算机可读存储介质所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现如第一方面或第二方面任一项所述的侧行链路通信方法。
第七方面，本申请实施例提供一种程序，当该程序被处理器执行时，用于执行如上第一方面或第二方面任一项所述的侧行链路通信方法。
可选地，上述处理器可以为芯片。
第八方面，本申请实施例提供一种计算机程序产品，包括程序指令，程序指令用于实现第一方面或第二方面任一项所述的侧行链路通信方法。
第九方面，本申请实施例提供了一种芯片，包括：处理模块与通信接口，该处理模块能执行第一方面或第二方面任一项所述的侧行链路通信方法。
进一步地，该芯片还包括存储模块(如，存储器)，存储模块用于存储指令，处理模块用于执行存储模块存储的指令，并且对存储模块中存储的指令的执行使得处理模块执行第一方面或第二方面任一项所述的侧行链路通信方法。
附图说明
图1为适用于本申请的通信系统的一个示意图；
图2为适用于本申请的通信系统的另一个示意图；
图3为本申请提供的侧行链路通信方法的一个示意性流程图；
图4为本申请提供的侧行链路通信方法的一个示意性流程图；
图5为本申请提供的侧行链路通信方法的一个示意性流程图；
图6为本申请提供的协助信息与第一时频资源之间的时间关系的示意图；
图7为本申请提供的侧行链路通信方法的一个示意性流程图；
图8为本申请提供的通信装置的示意图；
图9为本申请提供的通信设备的示意性结构图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例的说明书、权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本申请实施例的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunications system，UMTS)、全球微波接入互操作性(worldwide interoperability for microwave access， WiMAX)通信系统、第五代(5th generation，5G)系统或新无线(new radio，NR)以及未来的通信系统，如第六代移动通信系统等。本申请对此不作限定。
本申请实施例中的终端设备可以称为终端、用户设备(user equipment，UE)，终端设备可以是接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端设备、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动移动网(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。此外，在本申请实施例中，终端设备还可以是车联网系统或物联网(internet of things，IoT)系统中的终端设备。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，该网络设备可以是GSM或CDMA系统中的基站(base transceiver station，BTS)，也可以是WCDMA系统中的基站(nodeB，NB)，还可以是LTE系统中的演进型基站(evolutional nodeB，eNB或eNodeB)，还可以是云无线接入网(cloud radio access network，CRAN)场景下的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、以及5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等，本申请实施例并不限定。
侧行链路传输技术(sidelink，SL)与传统的蜂窝系统中通信数据通过基站接收或者发送的方式不同，侧行链路系统采用终端到终端直接通信的方式，因此具有更高的频谱效率以及更低的传输时延。在第三代合作伙伴计划(3 rd generation partnership project，3GPP)定义了两种传输模式：模式A和模式B。
- 模式A：图1为采用侧行链路传输模式A的通信系统100的一个示意图。如图1所示，终终端设备102或终端设备103的侧行链路(SL)通信资源是由网络设备101分配的，例如，网络设备101通过下行(downlink，DL)链路为终端设备102授权SL资源，终端设备102在该授权的SL资源上向终端设备103发送数据。同样，终端设备103也可以在网络设备101为其授权的SL资源上向终端设备102发送数据。网络设备101可以为终端设备分配单次传输的SL资源，也可以为终端设备分配半静态传输的SL资源。
- 模式B：图2为采用侧行链路传输模式B的通信系统200的一个示意图，如图2所示，终端设备202和终端设备203预配置了侧行链路资源池，在需要进行侧行链路通信时，终端设备202或终端设备203在资源池中选择一个资源进行侧行链路的数据传输。
下面对本申请中涉及到的相关技术和术语进行说明。
一、LTE设备到设备(device-to-device，D2D)通信、车辆外联(vehicle to everything，V2X)通信
在3GPP中，D2D通信分成了不同的阶段进行研究。
- 邻近服务(proximity based service，ProSe)：版本12(release 12，Rel-12)、版本13(release 13，Rel-13)标准协议中中设备到设备通信，是针对ProSe的场景进行了研究，其主要针对公共安全类的业务。
在ProSe中，通过配置资源池在时域上的位置，例如资源池在时域上非连续，达到UE在侧行链路上非连续发送/接收数据，从而达到省电的效果。
- V2X：在Rel-14/15中，车联网系统针对车车通信的场景进行了研究，其主要面向相对高速移动的车车、车人通信的业务；
在V2X中，由于车载系统具有持续的供电，因此功率效率不是主要问题，而数据传输的时延是主要问题，因此在系统设计上要求终端设备进行连续的发送和接收。
- 进一步增强的D2D(further enhanced D2D，FeD2D)：在Rel-14中，这个场景对于可穿戴设备通过手机接入网络的场景进行了研究，其主要面向是低移动速度以及低功率接入的场景。
在FeD2D中，在预研阶段3GPP结论为基站可以通过一个中继(relay)终端去配置远端(remote)终端的非连续接收(discontinuous reception，DRX)操作的参数，但是由于该课题没有进一步进入标准化阶段，如何进行DRX配置的具体细节没有结论。
二、NR V2X
NR V2X在LTE V2X的基础上，不局限于广播场景，而是进一步拓展到了单播和组播的场景，在这些场景下研究V2X的应用。
- 类似于LTE V2X，NR V2X也会定义上述模式1(mode-1)、模式2(mode-2)两种资源授权模式；更进一步，用户可能处在一个混合的模式下，即既可以使用mode-1进行资源的获取，又同时可以使用mode-2进行资源的获取。该资源获取通过侧行链路授权的方式指示，即侧行链路授权指示相应的物理侧行控制信道(physical sidelink control channel，PSCCH)与物理侧行共享信道(physical sidelink shared channel，PSSCH)资源的时频位置。
- 不同于LTE V2X，除了无反馈的、终端设备自主发起的混合自动请求重传(hybrid automatic repeat req终端设备st，HARQ)重传，NR V2X引入了基于反馈的HARQ重传，不限于单播通信，也包括组播通信；
三、NR-V2X Mode 2资源选择方式
在NR-V2X中，一些新的特征被引入，比如支持大量非周期业务、重传次数的增多以及更灵活的资源预留周期等。这些特征都对终端自主资源选择的模式有较大影响。因此，3GPP以LTE-V2X中模式4为基础，重新讨论并设计了适用于NR-V2X的资源选择方案，记为模式2。在模式2中，终端设备通过解码其他终端设备发送的侧行控制信息(sidelink control information，SCI)和测量侧行链路接收功率，在资源池中选择未被其他终端设备预留或者被其他终端设备预留但接收功率较低的资源。NR-V2X模式2的资源选择算法分为两个主要步骤，即终端设备首先确定候选资源集合，再从候选资源集合中选择资源发送数据。
步骤1：终端设备确定候选资源集合。
终端设备将资源选择窗内所有的可用资源作为资源集合A。首先，终端设备需根据资源侦听窗内的侦听结果，判断资源是否被其他终端设备预留。终端设备根据未侦听时隙与侦听到的第一阶SCI，通过测量资源的参考信号接收功率(reference signal received power，RSRP)进行资源排除，在完成资源排除后，如果资源集合A中的剩余资源数目小于一定比例，终端设备将提升RSRP阈值3dB，并重复执行步骤1直到资源集合A中的剩余资源数目大于等于该比例。相比较LTE-V2X中该比例固定为20％，NR-V2X中该比例的取值更为灵活，其可能的取值为{20，35，50}％，具体比例的取值是以资源池为单位由网络配置或者预配置。最终，经过资源排除后的资源集合A即为终端设备的候选资源集合。
步骤2：终端设备在候选资源集合中选择传输资源。
该终端设备在资源集合A中等概率随机选择一个或多个传输资源。需要指出的是，在选择该多个传输资源时要满足如下时域上的限制：
第一，在除去一些例外情况后，终端设备应使选择的某个重传资源能够被之前发送的第一阶SCI指示。
上述例外情况包括终端设备在进行资源排除后，无法从资源集合A中选择出满足该时域限制的资源的情况。以及，还包括由于资源抢占、拥塞控制以及与上行业务冲突等因素，终端设备放弃传输从而导致某次重传的传输资源没有被之前发送的第一阶SCI指示的情况。
第二，终端设备应保证任意两个选择的时频资源，如果其中前一个传输资源需要HARQ反馈，则这两个资源在时域上至少间隔时长Z。
当资源选择无法满足该时域限制时，比如业务的时延预算(packet delay budget，PDB)较短但重传次数较多的情况下，取决于终端设备实现，可以放弃选择某些重传资源或者针对某几次传输去激活HARQ反馈。
四、通用陆地无线接入网-UE(universal terrestrial radio access network-UE，Uu)DRX操作
终端设备会根据DRX配置不连续的监控物理下行控制信道(physical downlink control channel，PDCCH)以达到省电的目的，当PDCCH中携带与终端设备对应的C-RNTI，CI-RNTI，CS-RNTI，INT-RNTI，SFI-RNTI，SP-CSI-RNTI，TPC-PUCCH-RNTI，TPC-PUSCH-RNTI，TPC-SRS-RNTI和AI-RNTI时，终端设备会根据控制信息做出对应DRX操作。网络通过配置一系列参数来控制终端设备的DRX操作，这些参数包括：
drx-onDurationTimer，drx-SlotOffset，drx-InactivityTimer，drx-RetransmissionTimerDL，drx-RetransmissionTimerUL，drx-LongCycleStartOffset，drx-ShortCycle(optional):the Short DRX cycle，drx-ShortCycleTimer(optional)，HARQ-RTT-TimerDL，drx-HARQ-RTT-TimerUL，ps-Wakeup(optional)，ps-TransmitOtherPeriodicCSI(optional)，ps-TransmitPeriodicL1-RSRP(optional)。
其中，上述提及参数可以参考3GPP标准协议38系列协议。
在如下情况下终端设备将处于DRX操作的激活时间：
- drx-onDurationTimer或drx-InactivityTimer运行期间；
- drx-RetransmissionTimerDL或drx-RetransmissionTimerUL运行期间；
- ra-ContentionResolutionTimer或msgB-ResponseWindow运行期间；
- 有未被处理的调度请求(scheduling request，SR)
- PDCCH指示有新的传输期间。
目前，在基于上述侧行链路的资源选择mode-2选择传输资源的方式，可能存在发送端终端设备通过干扰测量选择的侧行链路资源，在接收端终端设备可能存在较大的干扰，如接收端终端设备周边存在干扰节点，而发送端终端设备检测不到该干扰节点对接收端终端设备，即该干扰节点对发送端终端设备来说是隐藏节点。或者终端设备选择资源并在该资源上向目标终端发送数据时，该目标终端在该资源上处于发送状态，无法在该资源上接收数据，将引起相互之间的干扰，进而带来资源浪费、传输时延等问题。针对上述mode-2资源选择方式存在的问题，可以通过进行侧行链路通信的终端设备之间的协作机制(inter-UE coordination)，通过交互侧行链路传输资源情况，以减少因选择不合适的传输资源带来的通信性能下降的问题。以及，侧行链路DRX技术的引入将使得终端设备处于不连续接收状态。本申请提供的侧行链路通信方法使得终端设备之间的协作信息的传输发生在接收方UE的DRX操作(DRX operation)的激活时间(active time)，能够保证用户间协作有效、成功完成。下面结合附图对本申请提供的侧行链路通信方法进行说明。
图3是本申请提供的侧行链路通信方法300的示意性流程图。图3中的终端设备A与终端设备B进行通信，其中，终端设备B(即第二终端设备的一个示例)需要向终端设备 A(即第一终端设备的一个示例)发送数据之前，终端设备A和终端设备B可以采用本申请提供的通信方法进行通信资源的协商(用户间协作)。图3所示的侧行链路通信方法200包括但不限于以下步骤。
S310，终端设备A向终端设备B发送协助信息。
相应地，终端设备B接收来自终端设备A的协助信息(assistance information，AI)。
其中，该协助信息用于指示资源集合。该资源集合包括以下一种或多种资源：
终端设备A推荐(preferred)的资源、终端设备A不推荐(not preferred)的资源或冲突的资源。
或者说，该资源集合包括以下一种或多种资源：
终端设备A推荐终端设备B选择的资源、终端设备A不推荐终端设备B选择的资源或终端设备A检测到资源冲突的资源。
在一种实施方式中，该资源集合包括终端设备A推荐终端设备B选择的时频资源。
例如，终端设备A根据测量得到的干扰信息和/或终端设备A的双工模式(例如，全双工模式、半双工模式等)确定资源集合A，该资源集合A中包括的资源为终端设备A检测到的未被其他设备预留和/或干扰较小的资源和/或终端设备A处于接收状态的资源。以便终端设备B接收到该协助信息后，可以优先考虑选择资源集合A中的资源与终端设备A进行通信。但本申请不限于此。
在另一种实施方式中，该资源集合包括终端设备A不推荐终端设备B选择的时频资源。
例如，终端设备A根据测量得到的干扰信息和/或终端设备A的双工模式(例如，全双工模式、半双工模式等)确定资源集合B，该资源集合B中包括的资源为终端设备A检测到的被其他设备预留和/或干扰较大的资源，和/或终端设备A处于发送状态而无法接收的资源。例如，资源集合B中可以包括终端设备A检测到冲突的时频资源，如终端设备A检测到一部分通信资源上的RSRP较高，则认为该通信资源有冲突，比如可能由临近节点在使用该资源通信，则协助信息指示的资源集合B中包括该资源，以通知终端设备B不推荐使用该资源进行终端设备A与终端设备B之间的通信。终端设备B接收到该协助信息后，可以优先选择该资源集合B以外的资源与终端设备A进行通信。但本申请不限于此。
在另一种实施方式中，该资源集合包括终端设备A推荐终端设备B选择的时频资源和不推荐终端设备B选择的时频资源。
例如，终端设备A发送的协助信息即指示终端设备A推荐选择的资源集合A，又指示终端设备A不推荐选择的资源集合B。当终端设备B接收到该协助信息后，可以优先考虑选择资源集合A中的资源与终端设备A进行通信，而若终端设备B检测到资源集合A中的对终端设备B的干扰较大(例如，RSRP大于或等于预设阈值等)的情况下，终端设备B可以选择资源集合A以外的资源，此时，可以尽量避免选择终端设备A不推荐的资源集合B中的资源，以提高终端设备A与终端设备B之间通信的可靠性。但本申请不限于此。
可选地，当满足向终端设备B发送协助信息的条件时，终端设备A向终端设备B发送协助信息。
例如，用于承载协助信息的资源为周期性资源，或者说，该协助信息为周期性信息，终端设备A在每个周期内向终端设备B发送协助信息。也就是说，终端设备A向终端设备B发送协助信息的条件可以包括：由协助信息的周期性触发终端设备A向终端设备B发送协助信息。但本申请不限于此。
再例如，终端设备A向终端设备B发送协助信息可以是事件触发的，例如可以规定在当终端设备A检测到预定资源量的资源的干扰大小高于或低于预设阈值时，终端设备A 向终端设备B发送该协助信息。但本申请不限于此。
S320，终端设备B在第三时频资源上向终端设备A发送数据。
在终端设备B接收到来自终端设备A的协助信息后，终端设备B可以根据协助信息指示的资源集合以及终端设备B确定的候选资源确定第三时频资源，并在S320中在该第三时频资源上向终端设备A发送数据。
例如，终端设备B可以基于上述资源选择mode-2的方式确定候选资源集合，并参考协助信息指示的资源集合，在候选资源集合中选择终端设备A推荐选择的资源(例如，协助信息指示的资源集合包括终端设备A推荐选择的资源)作为第三时频资源。或者，在候选资源集合中排除终端设备A不推荐选择的资源(例如，协助信息指示的资源集合包括终端设备A推荐选择的资源)后的剩余资源中，确定第三时频资源。但本申请不限于此。终端设备B还可以通过其他方式确定候选资源集合，并参考协助信息指示的资源集合，确定该第三时频资源。
根据上述方案，进行侧行链路通信的终端设备通过协助信息的交互，能够实现资源选择的协商，以便选择通信资源的发送端设备能够选择对于通信双方通信质量均较好的资源进行通信，能够提高通信的可靠性，减少数据重传，从而减小数据传输时延。
图4是本申请提供的侧行链路通信方法400的示意性流程图。图4中的终端设备A与终端设备B进行侧行链路通信，其中，该终端设备B正在执行非连续接收DRX操作，也就是说，终端设备B基于配置在一个时间内(即DRX的激活时间(active time))内处于接收状态，即在DRX激活时间可以接收来自其他终端设备的信号，在一段时间内(即DRX操作的非激活时间)处于休眠状态，保持低功率，停止接收来自其他终端设备的信号。
需要说明的是，终端设备执行DRX操作也可以称为终端设备处于DRX状态，DRX操作的激活时间也可以称为激活状态，非激活时间也可以成为非激活状态，本申请对此做限定。
终端设备B(即第二终端设备的一个示例)需要向终端设备A(即第一终端设备的一个示例)发送数据之前，终端设备A和终端设备B可以通过本申请提供的如图4所示的侧行链路通信方法进行资源协商，其中，可以由终端设备A触发用户间协作过程。图4所示的侧行链路通信方法包括但不限于以下步骤。
S410，终端设备A确定满足协助信息的发送条件。
其中，终端设备A向终端设备B发送协助信息的条件包括终端设备B进入DRX的激活时间。
例如，终端设备A确定终端设备B在第一时间间隔内处于DRX的激活时间，终端设备A确定在第一时间间隔内满足协助信息的发送条件，则终端设备A确定在第一时间间隔内向终端设备B发送协助信息。但本申请不限于此。
可选地，终端设备A接收来自第一配置信息，该第一配置信息用于配置终端设备B的DRX操作，或者说该第一配置信息为终端设备B的DRX操作的配置信息。
终端设备A可以根据该DRX操作的配置信息，确定终端设备B的DRX操作的激活时间，从而可以在终端设备B的DRX操作的激活时间内向终端设备B发送协助信息。
可选地，该DRX操作的配置信息可以用于配置终端设备B的该DRX操作的周期、起始位置偏移量或与该DRX操作激活时间相关的定时器的运行时长中的一项或多项。
其中，上述与终端设备B的DRX操作的激活时间相关的定时器，包括但不限于以下以下一项或多项：
第一定时器，所述第一定时器在一个DRX周期的起始时刻开始运行，例如，该第一定时器可以写作DRX-on_duration timer，但本申请不限于此；
第二定时器，所述第二定时器在接收到侧行链路新传消息时、接收到侧行链路新传消息后或接收到侧行链路新传消息后的一段时间开始运行，例如，该第二定时器可以写作 DRX-inactivity timer，但本申请不限于此；
第三定时器，所述第三定时器的运行时长为接收到重传数据之前的最大时间间隔，例如，该第三定时器可以写作DRX-retransmission timer，但本申请不限于此。
当第一定时器、第二定时器或第三定时器中的至少一个定时器正在运行时，终端设备B处于DRX操作的激活时间。终端设备A可以根据第一定时器、第二定时器或第三定时器中的至少一个定时器正在运行，确定终端设备B处于DRX操作的激活时间。
一种实施方式中，该第一配置信息可以来自终端设备B。
例如，在终端设备A与终端设备B建立侧行链路连接后，终端设备B通过第一配置信息通知终端设备A，终端设备B的DRX操作的激活时间。但本申请不限于此。
另一种实施方式中，该第一配置信息可以来自网络设备。
例如，由终端设备A接入的网络设备向终端设备A发送第一配置信息，通过第一配置信息通知终端设备A，终端设备B的DRX操作的激活时间。但本申请不限于此。
可选地，终端设备A接收到来自终端设备B的需要回复的请求消息后，终端设备A确定终端设备B处于DRX的激活时间。
例如，该需要回复的请求消息可以是信道状态信息(channel state information，CSI)请求消息，当终端设备A接收到来自终端设备B的CSI请求消息后，终端设备A可以确定终端设备B在等待终端设备A的CSI反馈信息，因此，终端设备B处于DRX操作的激活时间，但本申请不限于此。
可选地，终端设备A与终端设备B传输侧行链路的直接连接建立请求后到侧行链路传输配置完成期间，终端设备B处于DRX操作的激活时间。
可选地，终端设备A向终端设备B发送协助信息的条件还可以包括如图3所示实施例所述的周期性条件或事件触发条件。
S420，终端设备A向终端设备B发送协助信息。
终端设备A在S410确定在第一时间间隔后，则终端设备A在第一时间间隔内向终端设备B发送协助信息。也就是说，终端设备A等待终端设备B处于DRX的激活状态时向终端设备B发送协助信息。由于终端设备B在第一时间间隔内为DRX操作的激活时间，即终端设备B处于接收状态，相应地，接收来自终端设备A的协助信息。
S430，终端设备B在第三时频资源上向终端设备A发送数据。
终端设备B可以根据协助信息以及终端设备B确定的候选资源确定第三时频资源，并在该第三时频资源上向终端设备A发送数据。
需要说明的是，本实施例与上图3实施例中相同或相似的部分，可以参考上述对图3的描述，为了简要，在此不再赘述。
根据上述方案，终端设备A判断终端设备B的DRX操作的激活时间，并在激活时间内向终端设备B发送协助信息，能够提高协助信息被成功接收的概率，以便终端设备B可以基于协助信息选择与终端设备A的侧行链路资源，能够提高通信的可靠性。
图5为本申请实施例提供的侧行链路通信方法500的示意性流程图。图5中的终端设备A与终端设备B进行侧行链路通信。终端设备B(即第二终端设备的一个示例)需要向终端设备A(即第一终端设备的一个示例)发送数据之前，可以由终端设备A触发用户间协作过程。图5所示的侧行链路通信方法包括但不限于以下步骤。
S510，终端设备B向终端设备A发送第一指示信息，该第一指示信息用于指示第一时频资源。
相应地，终端设备A接收来自终端设备B的该第一指示信息，其中，该第一时频资源为终端设备B的预留资源，即终端设备B预留的、用于承载数据的时频资源。
作为示例非限定，该第一指示信息可以是SCI。
终端设备B通过第一指示信息通知终端设备A，用于承载数据的预留资源，即第一时 频资源。终端设备A判断该第一时频资源是否合适接收数据。
例如，终端设备A可以接收其他终端设备(即终端设备B以外的终端设备)的SCI，确定其他终端设备预留的资源，若其他终端设备预留的资源与该第一时频资源冲突，终端设备A可以预测干扰大小，在干扰小于预设门限值的情况下，终端设备A可以确定在该第一时频资源上接收数据；在干扰大于预设门限值的情况下，终端设备A可以触发用户间资源协商过程，通过协助信息通知终端设备B推荐选择或不推荐选择的资源集合。但本申请不限于此。
再例如，终端设备A为半双工模式，若终端设备A在第一时频资源处于发送状态，则终端设备A不能在第一时频资源接收来自终端设备B的数据，则终端设备A可以触发用户间资源协商过程，通过协助信息通知终端设备B推荐选择或不推荐选择的资源集合。但本申请不限于此。
S520，终端设备A确定满足协助信息的发送条件。
其中，终端设备A向终端设备B发送协助信息的条件包括：终端设备A确定第一时频资源不适合接收数据。当终端设备A确定第一时频资源不适合接收数据时，通过协助信息通知终端设备B推荐选择或不推荐选择的资源集合。
可选地，终端设备A向终端设备B发送协助信息的条件还包括：终端设备A能够在第一时频资源之前发送该协助信息，即终端设备A发送协助信息的时间间隔A位于第一时频资源之前。
可选地，终端设备B执行资源重选所需的最小时间间隔为第二时间间隔，终端设备A向终端设备B发送协助信息的条件还包括：时间间隔A(即第一时间间隔的一个示例)的结束时刻与第一时频资源的起始时刻之间的间隔大于或等于第二时间间隔。其中，终端设备A在时间间隔A内发送协助信息。
也就是说，终端设备B重选承载数据的资源最少需要第二时间间隔，终端设备A需要在第一时频资源的起始时刻之前大于或等于第二时间间隔的时刻完成发送协助信息，以便终端设备B接收到协助信息后有足够的时间能够重选承载数据的资源。
例如，如图6所示，第一时频资源的起始时刻为t4、结束时刻为t5，若终端设备A能够在t4时刻之前大于或等于第二时间间隔的时刻，即t3时刻之前发送协作信息，则终端设备B能够进行资源重选。如终端设备A能够在时间间隔A内发送协助信息，该时间间隔A的起始时刻为t1、结束时刻为t2，t2时刻在t3时刻之前，即t4-t2大于第二时间间隔，则终端设备A确定满足协助信息的发送条件。
可选地，终端设备B为执行DRX操作的终端设备。可以规定终端设备B在时间间隔A内处于DRX操作的激活时间，终端设备A在时间间隔A内向终端设备B发送协助信息，该时间间隔A的结束时刻与第一时频资源的起始时刻之间的间隔大于或等于上述第二时间间隔。
例如，第二时间间隔的长度为T3，第一时间间隔的长度为Tx，第一时频资源的起始时刻为t1，则时间间隔A的范围为[t1-T3-Tx，t1-T3]。但本申请不限于此。
S530，终端设备A向终端设备B发送协助信息。
终端设备A在S520中确定满足协作信息的发送条件后，终端设备A在时间间隔A内向终端设备B发送协助信息。
S540，终端设备B在第三时频资源上向终端设备A发送数据。
终端设备B可以根据协助信息以及终端设备B确定的候选资源确定第三时频资源，并在该第三时频资源上向终端设备A发送数据。
需要说明的是，本实施例与图3、图4实施例中相同或相似的部分，可以参考上述描述，为了简要，在此不再赘述。
图7为本申请实施例提供的侧行链路通信方法700的示意性流程图。图7中的终端设 备A与终端设备B进行侧行链路通信。终端设备B(即第二终端设备的一个示例)需要向终端设备A(即第一终端设备的一个示例)发送数据之前，可以由终端设备B触发用户间协作过程。图7所示的侧行链路通信方法包括但不限于以下步骤。
S710，终端设备B向终端设备A发送第二指示信息，该第二指示信息用于触发终端设备A发送协助信息。
相应地，终端设备A接收来自终端设备B的第二指示信息。终端设备A根据接收到的该第二指示信息确定终端设备B触发终端设备A发送协助信息。
一种实施方式，该第二指示信息可以是用于触发协助信息的特定序列。
例如，该第二指示信息可以是参考信号或前导序列。终端设备A可以通过相关检测，检测到该特定序列后，确定终端设备B触发发送协助信息。但本申请不限于此。
另一种实施方式中，该第二指示信息可以承载在以下至少一种信息中：
SCI、物理侧行反馈信道(physical sidelink feedback channel，PSFCH)、媒体接入控制(medium access control，MAC)控制元素(control element，CE)或无线资源控制(radio resource control，RRC)消息。
可选地，该第二指示信息包括以下一项或多项信息：
该终端设备B的资源选择窗的配置信息、该协助信息的时延需求信息和时间间隔B(即第一时间间隔的一个示例)的配置信息。
其中，时间间隔B为终端设备B可以接收协助信息的时间间隔。终端设备A可以在该时间间隔B内发送协助信息。
例如，第二指示信息指示该终端设备B的资源选择窗的配置信息，该资源选择窗的配置信息可以指示终端设备B的资源选择窗的起始时刻以及持续时长，或者，可以指示终端设备B的资源选择窗的起始时刻以及终止时刻。终端设备A通过第二指示信息获取到终端设备B的资源选择窗的配置信息后，可以在终端设备B的资源选择窗内，确定终端设备A推荐选择的、不推荐选择的或检测到冲突的资源。但本申请不限于此。再例如，该第二指示信息包括该协助信息的时延需求信息，该时延需求信息用于指示协助信息的最大时间延迟，即该时延需求信息可以指示一段时长，该时长为协助信息的最大时间延迟，终端设备A可以根据该时延需求信息，在协助信息的最大时间延迟之前发送协助信息，以保证协助信息的时效。若终端设备A在协助信息的最大时间延迟之前不能够发送协助信息，则终端设备A可以不发送该协助信息，以避免资源浪费。但本申请不限于此。
再例如，该第二指示信息包括时间间隔B的配置信息，比如，该时间间隔B的配置信息可以指示时间间隔B的起始时刻以及持续时长，或者，可以指示时间间隔B的起始时刻以及终止时刻。终端设备A可以根据时间间隔B的配置信息确定终端设备B接收协助信息的时间间隔，从而在时间间隔B内发送协助信息。使得终端设备A和终端设备B对协助信息所在的时间间隔达成共识，可以避免资源浪费，提高通信的可靠性。但本申请不限于此。
可选地，终端设备B为执行DRX操作的终端设备。终端设备B在发送第二指示信息之后的时间间隔B内处于DRX操作的激活时间，以接收终端设备A发送的协助信息。
可选地，该第二指示信息承载在第二时频资源上，该第二时频资源的结束时刻与该时间间隔B的起始时刻之间间隔第三时间间隔，该第三时间间隔大于或等于该终端设备A处理该协作信息所需的时长。
也就是说，终端设备A接收到第二指示信息后，还需要一段时间处理协助信息，例如，处理协助信息所需的时长可以包括但不限于响应第二指示信息，确定资源集合的时间(即确定资源集合中包含的资源的时间)，和/或，编码、发送该协助信息。但本申请不限于此。在终端设备A处理协助信息的时长内，终端设备B可以不接收协助信息或不激活DRX操作(即处于DRX操作的非激活时间)，以减少功率消耗。
作为示例非限定，该终端设备A处理该协作信息所需的时长可以为协议规定的终端设备的能力信息，或者，终端设备A和终端设备B可以通过信息交互得到该终端设备A处理该协作信息所需的时长。或者，该终端设备A处理该协作信息所需的时长可以与终端设备A处理重传数据的最小时长相等。
可选地，该第二时频资源的结束时刻与该时间间隔B的结束时刻之间间隔第四时间间隔，该第四时间间隔小于或等于该协助信息的最大时间延迟。
例如，终端设备B可以在协助信息的最大时间延迟之前接收协助信息，或者处于DRX操作的激活时间，以接收协助信息。在最大时间延迟之后由于协助信息不满足时延需求，因此，终端设备B可以不接收协助信息，或者进入DRX操作的非激活时间。以减少功率消耗。
再例如，该第二时频资源的结束时刻为t2，该终端设备A处理该协作信息所需的时长为T4，该协助信息的最大时间延迟为T5，则时间间隔B的范围可以为[t2+T4，t2+T5]。但本申请不限于此。
可选地，时间间隔B可以大于或等于PSSCH与承载该PSSCH的反馈信息到的PSFCH之间的时间间隔。
S720，终端设备A向终端设备B发送协助信息。
S730，终端设备B在第三时频资源上向终端设备A发送数据。
需要说明的是，本实施例与图3、图4、图5实施例中相同或相似的部分，可以参考上述描述，为了简要，在此不再赘述。
本申请中，时间间隔、时长均表示一段时间长度，时间间隔可以替换为时长，时长也可以替换为时间间隔，本申请对此不做限定。
根据上述方案，进行侧行链路通信的终端设备通过协助信息的交互，能够实现资源选择的协商，以便选择通信资源的发送端设备能够选择对于通信双方通信质量均较好的资源进行通信，能够提高通信的可靠性，减少数据重传，从而减小数据传输时延。另外，在终端设备处于DRX操作的情况下，在终端设备的DRX操作激活时间内向终端设备发送协助信息，能够提高协助信息被成功接收的概率，以便终端设备可以基于协助信息选择侧行链路资源，能够提高通信的可靠性。
以上，结合图3至图7详细说明了本申请实施例提供的方法。以下介绍本申请实施例提供的装置。
图8是本申请实施例提供的通信装置的示意性框图。如图8所示，该通信装置800可以包括处理单元810和收发单元820。
在一种可能的设计中，该通信装置800可对应于上文方法实施例中的第一终端设备，即UE，或者配置于(或用于)第一终端设备中的芯片。
应理解，该通信装置800可对应于根据本申请实施例的方法300、400、500、700中的第一终端设备，该通信装置800可以包括用于执行图3、图4、图5、图7中的方法300、400、500、700中第一终端设备执行的方法的单元。并且，该通信装置800中的各单元和上述其他操作和/或功能分别为了实现图3、图4、图5、图7中的方法300、400、500、700的相应流程。
还应理解，该通信装置800为配置于(或用于)第一终端设备中的芯片时，该通信装置800中的收发单元820可以为芯片的输入/输出接口或电路，该通信装置800中的处理单元810可以为芯片中的处理器。
可选地，通信装置800的该处理单元810可以用于处理指令或者数据，以实现相应的操作。
可选地，通信装置800还可以包括存储单元830，该存储单元830可以用于存储指令或者数据，处理单元810可以执行该存储单元中存储的指令或者数据，以使该通信装置实 现相应的操作，该通信装置800中的该通信装置800中的收发单元820为可对应于图9中示出的第一终端设备900中的收发器910，存储单元830可对应于图9中示出的第一终端设备900中的存储器。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置800为第一终端设备时，该通信装置800中的收发单元820为可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图9中示出的第一终端设备900中的收发器910，该通信装置800中的处理单元810可通过至少一个处理器实现，例如可对应于图9中示出的第一终端设备900中的处理器920，该通信装置800中的处理单元810可通过至少一个逻辑电路实现。
在另一种可能的设计中，该通信装置800可对应于上文方法实施例中的第二终端设备，即UE，或者配置于(或用于)第二终端设备中的芯片。
应理解，该通信装置800可对应于根据本申请实施例的方法300、400、500、700中的第二终端设备，该通信装置800可以包括用于执行图3、图4、图5、图7中的方法300、400、500、700中第二终端设备执行的方法的单元。并且，该通信装置800中的各单元和上述其他操作和/或功能分别为了实现图3、图4、图5、图7中的方法300、400、500、700的相应流程。
还应理解，该通信装置800为配置于(或用于)第二终端设备中的芯片时，该通信装置800中的收发单元820可以为芯片的输入/输出接口或电路，该通信装置800中的处理单元810可以为芯片中的处理器。
可选地，通信装置800的该处理单元810可以用于处理指令或者数据，以实现相应的操作。
可选地，通信装置800还可以包括存储单元830，该存储单元830可以用于存储指令或者数据，处理单元810可以执行该存储单元中存储的指令或者数据，以使该通信装置实现相应的操作，该通信装置800中的该通信装置800中的收发单元820为可对应于图9中示出的第二终端设备900中的收发器910，存储单元830可对应于图9中示出的第二终端设备900中的存储器。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置800为第二终端设备时，该通信装置800中的收发单元820为可通过通信接口(如收发器或输入/输出接口)实现，例如可对应于图9中示出的第二终端设备900中的收发器910，该通信装置800中的处理单元810可通过至少一个处理器实现，例如可对应于图9中示出的第二终端设备900中的处理器920，该通信装置800中的处理单元810可通过至少一个逻辑电路实现。
图9是本申请实施例提供的终端设备900的结构示意图。该终端设备900可应用于如图1、图2所示的系统中，执行上述方法实施例中第一终端设备或第二终端设备的功能。如图所示，该终端设备900包括处理器920和收发器910。可选地，该终端设备900还包括存储器930。其中，处理器920、收发器910和存储器之间可以通过内部连接通路互相通信，传递控制和/或数据信号，该存储器用于存储计算机程序，该处理器920用于执行该存储器中的该计算机程序，以控制该收发器910收发信号。
上述处理器920可以和存储器可以合成一个处理装置，处理器920用于执行存储器中存储的程序代码来实现上述功能。具体实现时，该存储器也可以集成在处理器920中，或者独立于处理器920。该处理器920可以与图8中的处理单元对应。
上述收发器910可以与图8中的收发单元对应。收发器910可以包括接收器(或称接收机、接收电路)和发射器(或称发射机、发射电路)。其中，接收器用于接收信号，发 射器用于发射信号。
应理解，图9所示的终端设备900能够实现图3、图4、图5、图7中的方法300、400、500、700实施例中涉及终端设备的各个过程。终端设备900中的各个模块的操作和/或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详细描述。
上述处理器920可以用于执行前面方法实施例中描述的由终端设备内部实现的动作，而收发器910可以用于执行前面方法实施例中描述的终端设备向网络设备发送或从网络设备接收的动作。具体请见前面方法实施例中的描述，此处不再赘述。
可选地，上述终端设备900还可以包括电源，用于给终端设备中的各种器件或电路提供电源。
本申请实施例还提供了一种处理装置，包括处理器和接口；该处理器用于执行上述任一方法实施例中的方法。
应理解，上述处理装置可以是一个或多个芯片。例如，该处理装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码由一个或多个处理器执行时，使得包括该处理器的装置执行上述实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读存储介质，该计算机可读存储介质存储有程序代码，当该程序代码由一个或多个处理器运行时，使得包括该处理器的装置执行上述实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种系统，其包括前述的一个或多个网络设备。还系统还可以进一步包括前述的一个或多个终端设备。
在本申请所提供的几个实施例中，应该理解到，所揭露的设备和方法，可以通过其它 的方式实现。例如，以上所描述的设备实施例仅仅是示意性的，例如，该模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个模块可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，模块的间接耦合或通信连接，可以是电性，机械或其它的形式。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (42)

  1. 一种侧行链路通信方法，其特征在于，所述方法包括：
    第一终端设备在第一时间间隔内向第二终端设备发送协助信息，所述协助信息用于指示资源集合，所述资源集合包括以下一项或多项：
    所述第一终端设备推荐的资源、所述第一终端设备不推荐的资源或冲突的资源，
    其中，所述第一时间间隔在所述第二终端设备的非连续接收DRX操作的激活时间内。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备接收第一配置信息，所述第一配置信息用于配置所述DRX操作；
    所述第一终端设备根据所述第一配置信息，确定所述非连续接收DRX操作的激活时间。
  3. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备接收来自所述第二终端设备的第一指示信息，所述第一指示信息用于指示第一时频资源，所述第一时频资源为所述第二终端设备的预留资源；
    其中，所述第一时间间隔位于所述第一时频资源之前。
  4. 根据权利要求3所述的方法，其特征在于，所述第一时间间隔的结束时刻与所述第一时频资源的起始时刻之间间隔大于或等于第二时间间隔，所述第二时间间隔为所述第二终端设备执行资源重选所需的最小时间间隔。
  5. 根据权利要求3或4所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备根据所述第一时频资源，确定向所述第二终端设备发送所述协助信息。
  6. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备接收来自所述第二终端设备的第二指示信息，所述第二指示信息用于触发所述第一终端设备发送所述协助信息。
  7. 根据权利要求6所述的方法，其特征在于，所述第二指示信息包括以下一项或多项信息：
    所述第二终端设备的资源选择窗的配置信息、所述协助信息的时延需求信息和所述第一时间间隔的配置信息。
  8. 根据权利要求6或7所述的方法，其特征在于，所述第二指示信息承载在第二时频资源上，
    所述第二时频资源的结束时刻与所述第一时间间隔的起始时刻之间间隔第三时间间隔，所述第三时间间隔大于或等于所述第一终端设备处理所述协助信息所需的时长，和/或，
    所述第二时频资源的结束时刻与所述第一时间间隔的结束时刻之间间隔第四时间间隔，所述第四时间间隔小于或等于所述协助信息的最大时间延迟。
  9. 根据权利要求6至8中任一项所述的方法，其特征在于，所述第二指示信息承载在以下至少一种信息中：
    侧行控制信息SCI、物理侧行反馈信道PSFCH、媒体接入控制MAC控制元素CE或无线资源控制RRC消息。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备在第三时频资源上接收来自所述第二终端设备的数据，
    其中，所述第三时频资源是所述第二终端设备根据所述资源集合确定的。
  11. 一种侧行链路通信方法，其特征在于，所述方法包括：
    第二终端设备在第一时间间隔内接收第一终端设备的协助信息，所述第一时间间隔为用于发送所述协助信息的时间间隔，所述协助信息用于指示资源集合，所述资源集合包括 以下一项或多项：
    所述第一终端设备推荐的资源、所述第一终端设备不推荐的资源或冲突的资源，
    其中，所述第一时间间隔在所述第二终端设备的非连续接收DRX操作的激活时间内。
  12. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    所述第二终端设备向所述第一终端设备发送第一配置信息，所述第一配置信息用于配置所述DRX操作。
  13. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    所述第二终端设备向所述第二终端设备发送第一指示信息，所述第一指示信息用于指示第一时频资源，所述第一时频资源为所述第二终端设备的预留资源；
    其中，所述第一时间间隔位于所述第一时频资源之前。
  14. 根据权利要求13所述的方法，其特征在于，所述第一时间间隔的结束时刻与所述第一时频资源的起始时刻之间间隔大于或等于第二时间间隔，所述第二时间间隔为所述第二终端设备执行资源重选所需的最小时间间隔。
  15. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    所述第二终端设备向所述第一终端设备发送第二指示信息，所述第二指示信息用于触发所述第一终端设备发送所述协助信息。
  16. 根据权利要求15所述的方法，其特征在于，所述第二指示信息包括以下一项或多项信息：
    所述第二终端设备的资源选择窗的配置信息、所述协助信息的时延需求信息和所述第一时间间隔的配置信息。
  17. 根据权利要求15或16所述的方法，其特征在于，所述第二指示信息承载在第二时频资源上，
    所述第二时频资源的结束时刻与所述第一时间间隔的起始时刻之间间隔第三时间间隔，所述第三时间间隔大于或等于所述第一终端设备处理所述协助信息所需的时长，和/或，
    所述第二时频资源的结束时刻与所述第一时间间隔的结束时刻之间间隔第四时间间隔，所述第四时间间隔小于或等于所述协助信息的最大时间延迟。
  18. 根据权利要求15至17中任一项所述的方法，其特征在于，所述第二指示信息承载在以下至少一种信息中：
    侧行控制信息SCI、物理侧行反馈信道PSFCH、媒体接入控制MAC控制元素CE或无线资源控制RRC消息。
  19. 根据权利要求11至18中任一项所述的方法，其特征在于，所述方法还包括：
    所述第二终端设备在第三时频资源上向所述第一终端设备发送数据，
    其中，所述第三时频资源是所述第二终端设备根据所述资源集合确定的。
  20. 一种侧行链路通信装置，其特征在于，所述通信装置配置于第一终端设备，包括：
    处理单元，用于确定第一时间间隔，所述第一时间间隔在第二终端设备的非连续接收DRX操作的激活时间内；
    收发单元，在第一时间间隔内向所述第二终端设备发送协助信息，所述协助信息用于指示资源集合，所述资源集合包括以下一项或多项：
    所述第一终端设备推荐的资源、所述第一终端设备不推荐的资源或冲突的资源。
  21. 根据权利要求20所述的装置，其特征在于，
    所述收发单元还用于接收第一配置信息，所述第一配置信息用于配置所述DRX操作；
    所述处理单元具体用于根据所述第一配置信息，确定所述非连续接收DRX操作的激活时间。
  22. 根据权利要求21所述的装置，其特征在于，所述装置还包括：
    所述收发单元用于接收来自所述第二终端设备的第一指示信息，所述第一指示信息用于指示第一时频资源，所述第一时频资源为所述第二终端设备的预留资源；
    其中，所述第一时间间隔位于所述第一时频资源之前。
  23. 根据权利要求22所述的装置，其特征在于，所述第一时间间隔的结束时刻与所述第一时频资源的起始时刻之间间隔大于或等于第二时间间隔，所述第二时间间隔为所述第二终端设备执行资源重选所需的最小时间间隔。
  24. 根据权利要求22或23所述的装置，其特征在于，
    所述处理单元还用于根据所述第一时频资源，确定向所述第二终端设备发送所述协助信息。
  25. 根据权利要求21所述的装置，其特征在于，
    所述收发单元还用于接收来自所述第二终端设备的第二指示信息，所述第二指示信息用于触发所述第一终端设备发送所述协助信息。
  26. 根据权利要求25所述的装置，其特征在于，所述第二指示信息包括以下一项或多项信息：
    所述第二终端设备的资源选择窗的配置信息、所述协助信息的时延需求信息和所述第一时间间隔的配置信息。
  27. 根据权利要求25或26所述的装置，其特征在于，所述第二指示信息承载在第二时频资源上，
    所述第二时频资源的结束时刻与所述第一时间间隔的起始时刻之间间隔第三时间间隔，所述第三时间间隔大于或等于所述第一终端设备处理所述协助信息所需的时长，和/或，
    所述第二时频资源的结束时刻与所述第一时间间隔的结束时刻之间间隔第四时间间隔，所述第四时间间隔小于或等于所述协助信息的最大时间延迟。
  28. 根据权利要求25至27中任一项所述的装置，其特征在于，所述第二指示信息承载在以下至少一种信息中：
    侧行控制信息SCI、物理侧行反馈信道PSFCH、媒体接入控制MAC控制元素CE或无线资源控制RRC消息。
  29. 根据权利要求21至28中任一项所述的装置，其特征在于，
    所述收发单元还用于在第三时频资源上接收来自所述第二终端设备的数据，
    其中，所述第三时频资源是所述第二终端设备根据所述资源集合确定的。
  30. 一种侧行链路通信装置，其特征在于，所述通信装置配置于第二终端设备，包括：
    收发单元，在第一时间间隔内接收来自第一终端设备的协助信息，所述第一时间间隔为用于发送所述协助信息的时间间隔，所述协助信息用于指示资源集合，所述资源集合包括以下一项或多项：
    所述第一终端设备推荐的资源、所述第一终端设备不推荐的资源或冲突的资源，
    其中，所述第一时间间隔在所述第二终端设备的非连续接收DRX操作的激活时间内；
    处理单元，根据所述资源集合，确定用于发送数据的资源。
  31. 根据权利要求30所述的装置，其特征在于，
    所述收发单元还用于向所述第一终端设备发送第一配置信息，所述第一配置信息用于配置所述DRX操作。
  32. 根据权利要求30所述的装置，其特征在于，
    所述收发单元还用于向所述第一终端设备发送第一指示信息，所述第一指示信息用于指示第一时频资源，所述第一时频资源为第二终端设备的预留资源；
    其中，所述第一时间间隔位于所述第一时频资源之前。
  33. 根据权利要求32所述的装置，其特征在于，所述第一时间间隔的结束时刻与所述 第一时频资源的起始时刻之间间隔大于或等于第二时间间隔，所述第二时间间隔为所述第二终端设备执行资源重选所需的最小时间间隔。
  34. 根据权利要求30所述的装置，其特征在于，
    所述收发单元还用于向所述第一终端设备发送第二指示信息，所述第二指示信息用于触发所述第一终端设备发送所述协助信息。
  35. 根据权利要求34所述的装置，其特征在于，所述第二指示信息包括以下一项或多项信息：
    所述第二终端设备的资源选择窗的配置信息、所述协助信息的时延需求信息和所述第一时间间隔的配置信息。
  36. 根据权利要求34或35所述的装置，其特征在于，所述第二指示信息承载在第二时频资源上，
    所述第二时频资源的结束时刻与所述第一时间间隔的起始时刻之间间隔第三时间间隔，所述第三时间间隔大于或等于所述第一终端设备处理所述协助信息所需的时长，和/或，
    所述第二时频资源的结束时刻与所述第一时间间隔的结束时刻之间间隔第四时间间隔，所述第四时间间隔小于或等于所述协助信息的最大时间延迟。
  37. 根据权利要求34至36中任一项所述的装置，其特征在于，所述第二指示信息承载在以下至少一种信息中：
    侧行控制信息SCI、物理侧行反馈信道PSFCH、媒体接入控制MAC控制元素CE或无线资源控制RRC消息。
  38. 根据权利要求30至37中任一项所述的装置，其特征在于，
    所述收发单元还用于在第三时频资源上向所述第一终端设备发送数据，
    其中，所述第三时频资源是所述处理单元根据所述资源集合确定的。
  39. 一种通信设备，其特征在于，包括：
    处理器、存储器、与终端设备进行通信的接口；
    所述存储器存储计算机执行指令；
    所述处理器执行所述存储器存储的计算机执行指令，使得所述处理器执行如权利要求1至19中任一项所述的通信方法。
  40. 一种计算机可读存储介质，包括计算机程序，当其由一个或多个处理器执行时，使得包括所述处理器的装置执行如权利要求1至19中任一项所述的方法。
  41. 一种计算机程序产品，其特征在于，所述计算机程序产品包括：计算机程序，当所述计算机程序被运行时，使得计算机执行如权利要求1至19中任一项所述的方法。
  42. 一种芯片，其特征在于，包括至少一个处理器和通信接口；
    所述通信接口用于接收输入所述芯片的信号或从所述芯片输出的信号，所述处理器与所述通信接口通信且通过逻辑电路或执行代码指令用于实现如权利要求1至19中任一项所述的方法。
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