WO2021228237A1 - 通信方法、装置及*** - Google Patents
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- WO2021228237A1 WO2021228237A1 PCT/CN2021/093885 CN2021093885W WO2021228237A1 WO 2021228237 A1 WO2021228237 A1 WO 2021228237A1 CN 2021093885 W CN2021093885 W CN 2021093885W WO 2021228237 A1 WO2021228237 A1 WO 2021228237A1
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Definitions
- the embodiments of the present application relate to the field of communication technologies, and in particular, to communication methods, devices, and systems.
- side link resources are resources used for communication between the terminal and the terminal.
- the side link resources may include side link resources in the frequency domain and side link resources in the time domain.
- the terminals in the sidewalk link are more sensitive to power consumption, and how to save the power consumption of the terminal has become an urgent problem to be solved.
- the embodiments of the present application provide a communication method, device, and system to save power consumption of the terminal.
- an embodiment of the present application provides a communication method, including: a first terminal receives side link control information SCI from a second terminal, where the SCI is used to indicate time domain resources of the side link; The first terminal starts a first timer at a first time or a second time, the first time is associated with the time domain resources of the side link occupied or indicated by the SCI, and the second time is associated with all The time domain resources occupied by the feedback information sent by the first terminal, the feedback information includes the side-link measurement report, the side-link channel state information CSI, or the side-link hybrid automatic repeat request HARQ Information, the first timer is used to indicate that at least one time unit after the start of the first timer does not monitor the control information of the side link and/or the data information of the side link.
- the first terminal starts the first timer after sending the feedback information to the second terminal, and the first timer is used to indicate that at least one time unit after the first timer is started does not monitor the control information of the side link And/or the data information of the side link. That is, within the starting duration of the first timer, the second terminal will not send side-link control information and/or side-link data information to the first terminal, so the first terminal is within this period of time. It is not necessary to monitor the control information of the side link and/or the data information of the side link, so that the purpose of energy saving can be achieved.
- the first terminal stops the first timer at the third time or the fourth time, the third time is obtained according to the first time length, and the fourth time is associated with The time domain resource of the side link indicated by the SCI.
- the first terminal when the first duration is met, or when the first duration is exceeded, the first terminal stops the first timer.
- the first duration described above is related to the time delay for the second terminal to acquire the time domain resources for sidelink transmission, or is related to the time domain resources of the side link indicated by the SCI, or so
- the first duration is configured to the first terminal through signaling.
- the signaling is the RRC signaling of the network device, or the RRC signaling of the PC5.
- the first moment is any one of the following:
- the first offset is configured by radio resource control RRC signaling
- the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the second moment is any one of the following:
- the next time slot of the time slot occupied by the feedback information is the next time slot of the time slot occupied by the feedback information.
- the second offset is configured by RRC signaling
- the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the first duration is any one of the following:
- T1 T2, T1+T3, T4, T1+T4, T2+T4, T1+T3+T4, T5, T5+T4, T5+T1, or T5+T1+T4;
- the T1 is the time required for the second terminal to complete the resource detection and selection process
- the T2 is the time required for the second terminal to identify candidate resources and select resources for sidelink transmission
- the T3 is the processing delay of the second terminal for the feedback information
- the T4 is the delay of the resource selection window of the second terminal relative to the resource detection window
- the T5 is the second terminal completing the SCI The duration of decoding/analysis or the duration of the second terminal completing SCI decoding/analysis and performing reference signal received power RSRP/received signal strength indication RSSI measurement.
- the time domain resources of the side link indicated by the SCI include a first resource set, and the first resource set includes the time domain resources of N side links, and N is a positive integer ;
- the fourth moment is the fifth moment, or the fifth moment plus the third offset, or the sum of the durations corresponding to the first moment and the first difference, or the second moment and the second difference.
- the sum of the corresponding durations, the first difference is the difference between the first moment and the fifth moment
- the second difference is the difference between the second moment and the fifth moment
- the The fifth moment is any of the following:
- x is an integer less than or equal to N and greater than 1.
- the time domain resources of the side link indicated by the SCI include a second resource set, the second resource set includes a periodic first resource set, and the first resource set includes Time domain resources of N side links, where N is a positive integer;
- the fourth time is the sixth time, or the sixth time plus the fourth offset, or the difference between the first time and the third time
- the fourth difference being the The difference between the second moment and the sixth moment; wherein, the sixth moment is any one of the following:
- y is a positive integer
- z is a positive integer less than or equal to N.
- the SCI includes a first-level SCI and a second-level SCI; the first moment is any one of the following:
- the termination symbol of the first level SCI or the termination symbol of the second level SCI is the termination symbol of the first level SCI or the termination symbol of the second level SCI
- the first-level SCI indicates a first resource set, and the first resource set includes time-domain resources of N sidelinks, and N is a positive integer; the fourth moment Any of the following:
- x is an integer less than or equal to N and greater than 1.
- the first-level SCI indicates a second resource set, the second resource set includes a periodic first resource set, and the first resource set includes N side links N is a positive integer; the fourth moment is any one of the following:
- y is a positive integer
- z is a positive integer less than or equal to N.
- the first terminal starts a second timer at a seventh time
- the seventh time is the stop time of the first timer or the stop time of the first timer The first symbol after it.
- the first terminal stops the second timer at the eighth time, and the eighth time is obtained according to the second time length.
- the first terminal when the second duration is met, or when the second duration is exceeded, the first terminal stops the second timer.
- the second duration described above is a duration value associated with the duration of the resource selection window, or a duration value associated with the duration of resource selection/reselection, or the second duration is configured to the first through signaling. terminal.
- the signaling is the RRC signaling of the network device, or the RRC signaling of the PC5.
- the feedback information is the measurement report of the side link or the CSI of the side link
- the second timer is used to instruct to monitor the control information of the side link and/or the side link.
- the time period of the data information of the uplink is the time period of the data information of the uplink.
- the feedback information is HARQ information
- the second timer is used to indicate a time period for monitoring the retransmission data of the side uplink.
- the first terminal may start to monitor the control information of the side link and/or the data information of the side link, or monitor the retransmission data of the side link within the starting time of the second timer.
- the first terminal can monitor the control information and/or the data information of the side link, or monitor the retransmission data of the side link within the corresponding time period.
- the monitoring time period is set, it can avoid blind monitoring and cause serious power consumption, that is, energy saving can be achieved.
- the first terminal determines that it is in the active period within a first time period, and the first time period is the one in which the active period indicated by the third timer overlaps with the duration of the first timer. period.
- the third timer is any timer other than the first timer.
- the third timer indicates that the first terminal is in the active period within the first time period of the first timer, then The union of the activation periods indicated by the two timers is taken as the activation period of the first terminal.
- the first terminal determines that it is in an active period in a second time period, where the second time period is the union of the duration of the second timer and the active period indicated by the third timer.
- the third timer is any timer other than the first timer.
- the third timer indicates that the first terminal is in the active period within a certain period of time, then two timers are used to indicate The union of the activation periods is the activation period of the first terminal.
- an embodiment of the present application provides a communication method, including: a second terminal sends side link control information SCI to the first terminal, where the SCI is used to indicate time domain resources of the side link; The second terminal starts a first timer at the first time, the first time is associated with the time domain resources of the side link occupied or indicated by the SCI, and the first timer is used to indicate that the first timer.
- the feedback information is not monitored for at least one time unit after the startup, and the feedback information includes the side-link measurement report, the side-link channel state information CSI, or the side-link hybrid automatic repeat request HARQ information.
- the second terminal starts the first timer after sending the SCI to the first terminal, and the first timer is used to indicate that at least one time unit after the first timer is started does not monitor the feedback information sent by the first terminal. That is, the first terminal will not send feedback information to the second terminal during the starting time of the first timer, so the second terminal does not need to monitor the feedback information during this time, so that the purpose of energy saving can be achieved.
- the second terminal stops the first timer at a second time, and the second time is associated with time domain resources occupied by feedback information sent by the first terminal.
- the second terminal when the first duration is met, or when the first duration is exceeded, the second terminal stops the first timer.
- the first duration is associated with the time domain location where the feedback information is sent, or the first duration is configured to the second terminal through signaling.
- the signaling is the RRC signaling of the network device, or the RRC signaling of the PC5.
- exceeding the first duration can be understood as the time exceeding the first duration from the start or after the start of the first timer.
- the first moment is any one of the following:
- the first offset is configured by radio resource control RRC signaling
- the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the second moment is any one of the following:
- the last time slot of the time slot occupied by the feedback information is the last time slot of the time slot occupied by the feedback information.
- the second offset is configured by RRC signaling
- the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the second terminal starts a second timer at a third time
- the third time is the stop time of the first timer or the stop time of the first timer
- the second timer is used to indicate the time period for monitoring the feedback information.
- the second terminal may only start to monitor the feedback information within the starting time of the second timer. On the one hand, it can be ensured that the second terminal can monitor the feedback information within the corresponding time period. On the other hand, since the monitoring time period is set, it can avoid blind monitoring and cause serious power consumption, that is, energy saving can be achieved.
- the second terminal stops the second timer at a fourth moment, and the fourth moment is a value pre-configured by the network device or the second terminal, or a predefined value A value.
- the second terminal stops the second timer.
- the second duration is associated with the duration occupied by the feedback information, or the second duration is configured to the second terminal through signaling.
- the signaling is the RRC signaling of the network device, or the RRC signaling of the PC5.
- the time exceeding the second time period can be understood as the time exceeding the second time period from or after starting the second timer.
- the second terminal determines that it is in the active period within the first time period, and the first time period is one of the active period indicated by the third timer and the duration of the first timer. period.
- the third timer is any timer other than the first timer.
- the second terminal determines that it is in an active period in a second time period, where the second time period is the union of the duration of the second timer and the active period indicated by the third timer.
- the third timer is any timer other than the first timer.
- the third timer indicates that the second terminal is in the active period within a certain period of time, then two timers are used to indicate The union of the activation periods is the activation period of the second terminal.
- an embodiment of the present application provides a communication method, including: a first terminal receives an SCI from a second terminal, where the SCI is used to indicate time domain resources of a side link; The first timer is started at the time, the first time is associated with the time domain resources of the side link occupied or indicated by the SCI, and the second time is associated with the feedback information sent by the first terminal.
- the feedback information includes the measurement report of the side link, the CSI of the side link, or the HARQ information of the side link, and the first timer is used to indicate that the first timer starts At least one subsequent time unit does not monitor side link control information and/or side link data information; when the channel congestion rate is greater than the channel congestion rate threshold and/or the priority value in the SCI is less than the priority threshold
- the first terminal stops the first timer at the third time or the fourth time, the third time is the start time of the next resource period, and the fourth time is associated with the SCI Time domain resources of the indicated side link.
- the first terminal considering that the channel is relatively congested, even if the first terminal sends feedback information NACK to the second terminal, considering that the second terminal may not be able to detect new resources for retransmission of data because the channel is relatively congested, so the first The second terminal cannot reallocate resources to retransmit data. Therefore, in this case, the resources of the next cycle can be used for retransmission of data. Therefore, the first terminal can be saved as much energy as possible.
- the first terminal starts a second timer at a fifth time
- the fifth time is the stop time of the first timer or the stop time of the first timer The first symbol after it.
- the first terminal stops the second timer at a sixth moment, the sixth moment is obtained according to a second duration, and the second duration is configured through RRC signaling , Or a duration value associated with the duration of the resource selection window, or a duration value associated with the duration of resource selection/reselection.
- an embodiment of the present application provides a communication device, which may be a first terminal or a chip for the first terminal.
- the device has the function of realizing the foregoing first aspect, or third aspect, or each possible implementation method of the first aspect, or each possible implementation method of the third aspect.
- This function can be realized by hardware, or by hardware executing corresponding software.
- the hardware or software includes one or more modules corresponding to the above-mentioned functions.
- an embodiment of the present application provides a communication device, which may be a second terminal or a chip for the second terminal.
- the device has the function of realizing the foregoing second aspect or each possible implementation method of the second aspect. This function can be realized by hardware, or by hardware executing corresponding software.
- the hardware or software includes one or more modules corresponding to the above-mentioned functions.
- an embodiment of the present application provides a communication device, including a processor and a memory; the memory is used to store computer-executable instructions, and when the device is running, the processor executes the computer-executable instructions stored in the memory to enable The device executes any of the above-mentioned methods of the first aspect to the third aspect, and each of the possible implementation methods of the first aspect to the third aspect.
- an embodiment of the present application provides a communication device, including a communication device for executing the methods of the first aspect to the third aspect, and each step of any of the possible implementation methods of the first aspect to the third aspect Unit or means (means).
- an embodiment of the present application provides a communication device, including a processor and an interface circuit.
- the processor is configured to communicate with other devices through the interface circuit and execute the methods of the first to third aspects.
- the first aspect To any of the possible implementation methods of the third aspect.
- the processor includes one or more.
- an embodiment of the present application provides a communication device, including a processor, configured to be connected to a memory, and configured to call a program stored in the memory to execute the methods of the first to third aspects. From aspect to any of the possible implementation methods of the third aspect.
- the memory can be located inside the device or outside the device.
- the processor includes one or more.
- an embodiment of the present application also provides a computer-readable storage medium that stores instructions in the computer-readable storage medium, which when run on a computer, causes a processor to execute the first aspect to the third aspect. , Any of the possible implementation methods of the first aspect to the third aspect.
- an embodiment of the present application also provides a computer program product, the computer product including a computer program, when the computer program runs, the method of the first aspect to the third aspect, the method of the first aspect to the third aspect Any of the possible implementation methods is executed.
- an embodiment of the present application further provides a chip system, including a processor, configured to execute the methods of the first aspect to the third aspect, among the possible implementation methods of the first aspect to the third aspect Any method.
- an embodiment of the present application also provides a communication system, including: a first terminal and a second terminal; the second terminal is configured to send side link control information SCI to the first terminal, so The SCI is used to indicate the time domain resources of the side uplink; the first terminal is used to receive the SCI from the second terminal; the first timer is started at the first time or the second time, the The first moment is associated with the time domain resources of the side link occupied or indicated by the SCI, the second moment is associated with the time domain resources occupied by the feedback information sent by the first terminal, the feedback information Including side-link measurement reports, side-link channel state information CSI, or side-link hybrid automatic repeat request HARQ information, the first timer is used to indicate that after the first timer is started At least one time unit of does not monitor the control information of the side link and/or the data information of the side link.
- an embodiment of the present application further provides a communication method, including: a second terminal sends side link control information SCI to the first terminal, where the SCI is used to indicate time domain resources of the side link; A terminal receives the SCI from a second terminal; the first terminal starts a first timer at a first time or a second time, and the first time is associated with the side link occupied or indicated by the SCI Time domain resources, the second moment is associated with time domain resources occupied by feedback information sent by the first terminal, and the feedback information includes side link measurement reports and side link channel state information CSI, Or hybrid automatic repeat request HARQ information of the side link, the first timer is used to indicate that at least one time unit after the start of the first timer does not monitor the control information of the side link and/or the side link Link data information.
- an embodiment of the present application also provides a communication system, including: a first terminal and a second terminal; the first terminal is configured to receive side link control information SCI from the second terminal, The SCI is used to indicate the time domain resources of the side uplink; the second terminal is used to send the SCI to the first terminal; the first timer is started at the first time, and the first time is associated For the time domain resources of the side link occupied or indicated by the SCI, the first timer is used to indicate that feedback information is not monitored for at least one time unit after the first timer is started, and the feedback information includes the side The measurement report of the uplink, the channel state information CSI of the side link, or the HARQ information of the hybrid automatic repeat request of the side link.
- an embodiment of the present application also provides a communication method, including: a first terminal receives side link control information SCI from the second terminal, where the SCI is used to indicate the time domain of the side link Resource; the second terminal sends the SCI to the first terminal; the second terminal starts the first timer at the first time, and the first time is associated with the time domain of the side link occupied or indicated by the SCI Resource, the first timer is used to indicate that feedback information is not to be monitored for at least one time unit after the first timer is started, and the feedback information includes side-link measurement reports and side-link channel state information CSI, or hybrid automatic repeat request HARQ information of side uplink.
- FIG. 1 is a schematic diagram of a network architecture to which an embodiment of the application is applicable;
- Figure 2 is a schematic diagram of the DRX cycle
- Figure 3 is a schematic diagram of reserved side link resources
- Figure 4 is an example of feedback information
- FIG. 5 is a schematic diagram of a communication method provided by an embodiment of this application.
- Figure 6 is a schematic diagram of resource detection and selection
- Figure 7 is an example of the use of the timer
- Figure 8 is the second example of the use of the timer
- Figure 9 is the third example of the use of the timer
- Figure 10 is the fourth example of the use of the timer
- FIG. 11 is a schematic diagram of another communication method provided by an embodiment of this application.
- FIG. 12 is a schematic diagram of a communication device provided by an embodiment of this application.
- FIG. 13 is a schematic diagram of a terminal provided by an embodiment of the application.
- a schematic diagram of a network architecture to which the embodiments of this application are applied includes at least two terminals and at least one network device.
- the terminal can communicate with the network device through a wireless interface.
- a terminal is a device with wireless transceiver function. It can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (such as airplanes). , Balloons and satellites etc.).
- the terminal may be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, an industrial control (industrial control) Wireless terminals in, self-driving (self-driving), wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, Wireless terminals in a smart city (smart city), wireless terminals in a smart home (smart home), user equipment (UE), etc.
- the terminal and the terminal support direct communication, and the direct communication between the terminal and the terminal may also be referred to as D2D communication.
- Network equipment is a device that provides wireless communication functions for terminals.
- Network equipment includes, but is not limited to: the next generation base station (gnodeB, gNB) in the fifth generation (5G) and evolved node B (evolved node) B, eNB), radio network controller (RNC), node B (node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (For example, home evolved nodeB, or home node B, HNB), baseband unit (baseBand unit, BBU), transmission point (transmitting and receiving point, TRP), transmission point (TP), mobile switching center, etc.
- gnodeB, gNB next generation base station
- gNB next generation base station
- 5G fifth generation
- eNode B evolved node B
- RNC radio network controller
- node B node B
- BSC base station controller
- BTS base transceiver station
- home base station Form, home evolved nodeB, or home node B, HNB
- the logical system of network equipment can adopt a centralized unit (CU) and distributed unit (DU) separation mode.
- the CU-DU logic system can be divided into two types, namely the CU-DU separation architecture and the CU-DU fusion architecture.
- the functions of the protocol stack can be dynamically configured and divided, some of which are implemented in the CU, and the remaining functions are implemented in the DU.
- 3rd generation partnership project 3rd generation partnership project, 3GPP
- the DRX mechanism is to configure a DRX cycle for a terminal in a radio resource control (Radio Resource Control, RRC) connection state.
- the DRX cycle consists of "On Duration (wake-up period or wake-up time or activation period or duration)" and "Opportunity for DRX (sleep period or sleep time)".
- On Duration the terminal monitors and receives the physical downlink Control Channel (Physical Downlink Control Channel, PDCCH);
- PDCCH Physical Downlink Control Channel
- the wake-up period in the DRX cycle can be configured by signaling onDurationTimer.
- FIG. 2 is a schematic diagram of the DRX cycle. It can be seen from the figure that, in the time domain, time is divided into successive DRX Cycles. drxStartOffset specifies the starting subframe of the DRX cycle, and long DRX Cycle specifies how many subframes a long DRX cycle occupies. Both of these parameters are specified by the longDRX-CycleStartOffset field.
- the timer onDurationTimer specifies the number of consecutive subframes (that is, the number of subframes during which the active period lasts) that the PDCCH needs to be monitored from the start subframe of the DRX cycle.
- the terminal In general, after the terminal is scheduled to receive or send data in a certain subframe, it is likely to continue to be scheduled in the next few subframes. If you want to wait until the next DRX cycle to receive or send these data, it will Will bring additional delay. Therefore, in order to reduce this kind of delay, the terminal will continue to be in the active period after being scheduled, that is, it will continue to monitor the PDCCH during the configured active period.
- the implementation mechanism is: Whenever the terminal is scheduled to transmit data for the first time, it will start (or restart, or enable) a DRX inactivity timer (drxInactivityTimer), and the terminal will remain in the active state until the timer expires.
- drxInactivityTimer specifies the number of consecutive subframes that are continuously in the active state after the terminal successfully decodes a PDCCH indicating the initial transmission of uplink (UL) or downlink (downlink, DL) user data. That is, the timer is started or restarted every time the terminal has initial transmission data to be scheduled. It should be noted that this is the initial transmission, not the retransmission.
- Initial transmission refers to the first transmission of a certain transport block (Transport Block, TB); retransmission refers to the retransmission of the same transport block after the first transmission. The retransmission may be multiple times.
- the on duration in the DRX cycle belongs to the active period, and the working period of the timer after the drxInactivityTimer is turned on also belongs to the active period.
- the choice of DXR cycle includes a balance between battery saving and delay. From one aspect, a long DRX cycle is beneficial to extend the battery life of the terminal; for example, web browsing, when a user is reading a downloaded web page, if the terminal continues to receive downlink data at this time, it is a waste of resources. From another aspect, when there is new data transmission, a shorter DRX cycle is conducive to a faster response; for example, the terminal requests another web page or voice over internet protocol (VoIP).
- VoIP voice over internet protocol
- each terminal can be configured with two DRX cycles: a short DRX cycle (short DRX cycle) and a long DRX cycle (long DRX cycle).
- the side link resources in the embodiments of the present application may also be referred to as resources or transmission resources for short.
- the side link may also be referred to as a side link, or a side link, or a PC5 interface link, or an inter-terminal link.
- side link resources are resources used for communication between the terminal and the terminal.
- the side link resources may include side link resources in the frequency domain and side link resources in the time domain.
- This application mainly discusses side link resources in the time domain among the side link resources in the frequency domain and the side link resources in the time domain.
- the side link resources that appear subsequently may all refer to the side link resources in the time domain.
- Link resources here is a unified description.
- side-link resources may include side-link transmission resources and side-link reception resources.
- the side-link transmission resource is used to transmit information, such as transmitting side-link control information and/or side-link amount data information.
- the side-link receiving resource is used to receive information, such as receiving side-link control information and/or side-link data information.
- the network equipment allocates resources for the side link
- the second is that the terminal at the sending end selects reserved side link resources from idle resources.
- SCI sidelink control information
- N is a positive integer
- the reserved resources can also be from the first resource to the Xth resource for transmitting one data packet or one transmission block, and the X+1th resource to the Nth resource for transmitting another data packet or another transmission block.
- X is a positive integer greater than or equal to 1 and less than or equal to N; of course, the X+1th resource to the Nth resource can also be used to transmit other multiple data packets or multiple transmission blocks, and so on, no Enumerate one by one.
- N is 3 or any integer greater than 3.
- the period value can also be carried in the SCI, and the N resources reserved in one SCI can be repeatedly reserved with the period value.
- N resources in the first cycle are used to transmit transport block 1
- N resources in the second cycle are used to transmit transport block 2
- N resources in the third cycle are used to transmit transport block 3. And so on.
- FIG. 3 it is a schematic diagram of reserved side link resources.
- the side link resources reserved in the first cycle are used to transmit transport block 1 (TB1)
- the reserved side link resources in the second cycle Side link resources are used to transmit transport block 2 (TB2).
- TB1 transport block 1
- TB2 transport block 2
- all the side link resources reserved in each cycle are required to be limited to a time window, that is, the reserved side link resources cannot exceed the time window.
- a transmission block may also be referred to as a data packet (data packet).
- the terminal on the receiving side may send feedback information to the terminal on the transmitting side, and the feedback information may be a side link measurement report, side link channel state information (CSI), or Hybrid automatic repeat request (HARQ) information of the side link.
- the measurement report of the side link may be the reference signal received/receiving power (RSRP) of the side link, and the reference signal received/receiving quality of the side link (reference signal received/receiving quality, RSRQ), received signal strength indicator/indication (RSSI) of the side link or radio link monitoring (RLM) information of the side link, etc.
- RSRP reference signal received/receiving power
- RSRQ reference signal received/receiving quality of the side link
- RSSI received signal strength indicator/indication
- RLM radio link monitoring
- the location of the time domain resources and/or frequency domain resources occupied by the feedback information may be configured by the terminal on the transmitting side to the terminal on the receiving side, or configured by the network device on the terminal on the receiving side.
- the network device configures the location of the time domain resource and/or frequency domain resource occupied by the feedback information for the terminal on the receiving side
- the network device will also configure the location of the time domain resource and/or frequency domain resource occupied by the feedback information. Notify the terminal on the sending side.
- the location of the time domain resources and/or frequency domain resources occupied by the feedback information may also be obtained by the terminal on the receiving side through resource detection itself, or based on the time domain resources and/or time domain resources occupied by the feedback information configured by the network device. Or the location of frequency domain resources and obtained through resource detection.
- the location of the time domain resource where the feedback information for the transmission block 1 is sent is the resource where the transmission block 1 is located or the time at which the feedback can be performed after the transmission block 1.
- the time that the feedback can be performed later is the resource where the transmission block 1 is located or the time domain resource where the configured feedback information is located after the transmission block 1 is greater than the minimum HARQ processing time (for example, greater than MinTimeGapPSFCH) s position.
- the time when the feedback can be performed later is the resource where the transport block 1 is located or the time domain resource where the configured feedback information is located after the transport block 1 is greater than the minimum CSI generation time (for example, greater than MinTimeGapCSI) s position.
- the terminal on the transmitting side when the feedback information sent by the terminal on the receiving side to the terminal on the transmitting side is the measurement report of the side-link or the CSI of the side-link, then the terminal on the transmitting side will receive the feedback information according to The feedback information obtains information such as channel quality and channel state, so that side-link control information and/or side-link data information can be sent to the terminal on the receiving side based on the feedback information.
- the feedback information sent by the terminal on the receiving side to the terminal on the sending side is HARQ information
- the terminal on the sending side receives the feedback information
- ACK acknowledgement
- the feedback information is a negative acknowledgement (NACK)
- NACK negative acknowledgement
- the data sent by the terminal on the sending side on the last or previously reserved side link resource has not been correctly received or parsed by the terminal on the receiving side, so the terminal on the sending side
- the data can be retransmitted on the next reserved side link resource or on the side link resource reallocated by the terminal on the sending side.
- the reallocation may be understood as any one of selection, or reselection, or detection and selection, or detection and reselection.
- the terminal on the transmitting side reserves two side link resources for the terminal on the receiving side, which are called resource 1 and resource 2, respectively.
- resource 1 is used to transmit "transport block 1 (TB1)”
- resource 2 is used to transmit "transport block 2 (TB2)”.
- the position of the time-frequency resource occupied by the feedback information in the figure is pre-configured by the network device or the terminal on the sending side.
- the terminal on the transmitting side sends to the terminal on the receiving side on resource 2 based on the feedback information.
- the terminal on the sending side sends data 1 to the terminal on the sending side on resource 1.
- the feedback information in FIG. 4 is the HARQ information for transport block 1 sent by the terminal on the receiving side to the terminal on the sending side.
- the HARQ information is ACK
- the terminal on the transmitting side continues to send the next data on resource 2 to the terminal on the receiving side, such as data 2.
- the terminal on the sending side may also release resource 2.
- the HARQ information is NACK
- the terminal on the transmitting side knows that the terminal on the receiving side has not received or parsed the data 1 correctly, and then continues to retransmit the data 1 on the resource 2 to the terminal on the receiving side.
- the terminal on the sending side needs to keep listening to the feedback sent by the terminal on the receiving side after sending the control information and/or data information of the side link to the terminal on the receiving side on the reserved side link resources. information. If the terminal on the transmitting side immediately starts to monitor the feedback information after sending the control information and/or data information of the side link until the feedback information is monitored, the terminal on the transmitting side will always be in the active period, resulting in the consumption of the terminal on the transmitting side. The electricity is relatively serious and does not meet the current energy-saving requirements for the terminal.
- the terminal on the receiving side After the terminal on the receiving side sends the feedback information to the terminal on the sending side, it needs to keep monitoring the side link control information and/or side link data information that the sending side terminal will send (can be Is the initial data transmission or retransmission data). If the terminal on the receiving side immediately starts to monitor the control information of the side link and/or the data information of the side link after sending the feedback information until it monitors the control information of the side link and/or the information of the side link. Data information causes the terminal on the receiving side to always be in the active period, which causes the terminal on the receiving side to consume more power, which does not meet the current energy-saving requirements for the terminal.
- the reserved side-link resources may also be referred to as side-link resources or allocated side-link resources.
- the N resources included in the first resource set are reserved transmission resources for the same transmission block or different transmission blocks.
- the periodic first resource set included in the second resource set is reserved transmission resources for different transmission blocks.
- the SCI is located in the first m symbols of a reserved side link resource.
- the SCI is a two-level SCI
- the first-level SCI is located in the first m symbols of a reserved sidelink resource; or, the first-level SCI and the second-level SCI are located in a reserved The first m symbols of the side link resource.
- m is a positive integer.
- a terminal has both a sending function and a receiving function.
- the terminal When a terminal serves as the sending end, the terminal is also called the sending side terminal or the second terminal.
- the terminal When a terminal serves as the receiving terminal, the terminal is also called the terminal on the receiving side, or the first terminal.
- D2D communication is performed between terminal 1 and terminal 2.
- the terminal 1 When the terminal 1 is the transmitting end and the terminal 2 is the receiving end, the terminal 1 is also called the terminal on the transmitting side or the second terminal, and the terminal 2 is also called the terminal on the receiving side or the first terminal.
- the terminal 2 When the terminal 2 is the transmitting end and the terminal 1 is the receiving end, the terminal 2 is also called the terminal on the transmitting side or the second terminal, and the terminal 1 is also called the terminal on the receiving side or the first terminal.
- the timer is started after the time, that is, the next time after the time. Start at any time.
- the first timer is started at the first time
- the first timer can also be started after the first time.
- the first timer can also be started after the second time.
- the timer stops before the time that is, the timer immediately before the time. Stop all the time.
- the second timer can also be started before the third time.
- the second timer can also be started before the fourth time.
- the present application provides the following embodiment 1.
- the present application provides the following embodiment 2.
- embodiment 1 and embodiment 2 are decoupled, that is, there is no mutual dependency between the implementations of the two, and both are independent solutions.
- the two can be combined as a whole solution, that is, embodiment 1 is an implementation solution of a terminal on the receiving side, and embodiment 2 is an implementation solution of a terminal on the sending side.
- Example 1 is used as the implementation of the terminal on the receiving side, and the implementation of the terminal on the transmitting side adopts a different solution from that of Example 2.
- the embodiment 2 is used as the implementation of the terminal on the transmitting side, and the implementation of the terminal on the receiving side may adopt a solution different from that of the first embodiment.
- first timer and second timer in the terminal on the receiving side in the following embodiment 1 are only the same as the first timer and second timer in the terminal on the sending side in the following embodiment 2. They are the same in name, and they are essentially different timers. That is, the first timer in the terminal on the receiving side in Embodiment 1 and the first timer in the terminal on the transmitting side in Embodiment 2 are different timers, and the first timer in the terminal on the receiving side in Embodiment 1
- the second timer is a different timer from the second timer in the terminal on the transmitting side in the second embodiment.
- first time, second time, third time, and fourth time in the terminal on the receiving side in the following embodiment 1 are also the same as the first time and second time in the sending side in the following embodiment 2.
- the moment, the third moment, and the fourth moment are just the same in naming, but they are actually different moments.
- startup can also be referred to as restart.
- the feedback information is HARQ information
- starting any one of the following timers can be to start a timer corresponding to a certain HARQ process, or to start a timer for a certain HARQ process.
- stopping any one of the following timers may be stopping a timer corresponding to the HARQ process, or stopping a timer for a certain HARQ process.
- a timer corresponding to the process number contained in the SCI can be started.
- a process can also be called a process number (process number).
- the HARQ process may also be referred to as the HARQ process number (process number).
- stopping any timer at a certain moment can also be understood as stopping the timer when the timer exceeds the corresponding duration.
- not monitoring the control information of the side link and/or the data information of the side link can be understood as it is not necessary/unnecessary to monitor the control information of the side link and/or the data information of the side link .
- This embodiment is used to save power consumption of the terminal on the receiving side (that is, the first terminal).
- the first terminal after sending feedback information to the second terminal, the first terminal starts a first timer, and the first timer is used to indicate that at least one time unit after the first timer is started does not monitor the control of the side link Information and/or side link data information. That is, within the starting duration of the first timer, the second terminal will not send side-link control information and/or side-link data information to the first terminal, so the first terminal is within this period of time. It is not necessary to monitor the control information of the side link and/or the data information of the side link, so that the purpose of energy saving can be achieved.
- the first timer is used to indicate the length of time that the first terminal needs to wait before receiving the desired sidelink retransmission data, where the length of time can be calculated in units of time slots, symbols, or subframes.
- the second terminal will not send the side link control information and/or side link of the first HARQ process to the first terminal within the starting time of the first timer.
- the data information of the uplink so the first terminal does not need to monitor the control information of the side link and/or the data information of the side link corresponding to the first HARQ process during this period of time, so that energy saving can be achieved .
- the feedback information is also feedback information for the control information of the side link and/or the data information of the side link of the first HARQ process. That is, the HARQ process included in the control information of the side link is the first HARQ process.
- the first terminal starts the second timer.
- the second timer may be started at the time when the first timer is stopped, or the second timer may be started at a certain time after the time when the first timer is stopped.
- the feedback information sent by the first terminal is the side-link measurement report or the side-link CSI
- the second timer is used to indicate the monitoring of the side-link control information and/or the side-link data information.
- Time period (including initial data transmission and/or retransmission data).
- the second timer is used to indicate the time period for monitoring the retransmission data of the side uplink.
- the first terminal starts to monitor the control information of the side link and/or the data information of the side link (including the initial transmission data and/or retransmission data, or Only include retransmitted data).
- the second timer is used to indicate the time period for monitoring the retransmission data of the side uplink. It can be understood that the second timer is used to indicate the time period for monitoring the retransmission data corresponding to the first HARQ process of the side uplink. period. That is, after the second timer is started, the first terminal expects to monitor the control information of the side link and/or the data information of the side link corresponding to the first HARQ process.
- a communication method provided by an embodiment of this application, the method includes the following steps:
- Step 501 The second terminal sends an SCI to the first terminal.
- the first terminal receives the SCI.
- the first terminal may receive the SCI.
- the SCI is used to indicate the time domain resource of the side link, and the time domain resource of the side link is used by the second terminal to send side link control information and/or side link data information to the first terminal . Or it can be understood that the second terminal will send the control information of the side link and/or the data information of the side link to the first terminal on the time domain resource of the side link indicated by the SCI.
- the SCI can be used not only to indicate the time domain resources of the side link, but also to indicate the frequency domain resources of the side link.
- the time domain resources and/or frequency domain resources indicated by the SCI may be reserved or scheduled, or partially reserved and partially scheduled.
- the second terminal configures one or more side link time domain resources for the first terminal, and can send side link control information and/or side link control information to the first terminal on these time domain resources. Data information of the side link.
- the first terminal may send feedback information to the second terminal, and the feedback information may be a side-link measurement report, a side-link CSI, or a side-link HARQ information, or the like.
- the CSI of the side link includes one or more of Channel Quality Indication (CQI), Precoding Matrix Indication (PMI), Rank Indication (RI), and so on.
- CQI Channel Quality Indication
- PMI Precoding Matrix Indication
- RI Rank Indication
- the CSI of the side link is only CQI.
- Step 502 The first terminal starts a first timer.
- the first terminal starts the first timer at a certain time after sending the feedback information, and the first timer is used to indicate that at least one time unit after the start of the first timer does not monitor the control information of the side link And/or the data information of the side link, so as to achieve the purpose of energy saving.
- the first terminal may start the first timer at or after the first time.
- the first moment is associated with the time domain resources of the side link occupied or indicated by the SCI in step 501.
- “associated with” refers to the time domain resources of the side link occupied or indicated by the SCI.
- the time domain resources of the side link occupied by the SCI refer to one or more symbols occupied by the SCI.
- the first moment can be any of the following:
- the first offset is configured by RRC signaling, and the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the first offset may also be predefined.
- the first offset may be the feedback information processing delay.
- the first terminal may start the first timer at the second time or after the second time.
- the second moment is associated with the time domain resources occupied by the feedback information sent by the first terminal.
- “associated with” refers to the time domain resource occupied by the feedback information sent by the first terminal.
- the second moment can be any of the following:
- the time domain resources occupied by the feedback information can be understood as the time slot occupied by the feedback information or the time slot where the symbol occupied by the feedback information is located.
- the second offset is configured by RRC signaling, and the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the second offset may also be predefined.
- Step 503 The first terminal stops the first timer.
- This step is optional.
- the first terminal may stop the first timer before the third time or the third time.
- the third time is obtained according to the first time length, and the first time length is associated with the time delay for the second terminal to acquire the time domain resource used for sidelink transmission.
- stopping the first timer before the third time is to ensure that the next control information/data information is not missed or missed as far as possible, or that the next control information/data information is received in time/early.
- the "acquisition” here can be detection, or selection, or reselection, or detection and selection, or detection and reselection.
- the first terminal may stop the first timer after the third time.
- stopping the first timer after the third moment is to understand that the first timer is the minimum limit. As long as it is after the first timer, it can be guaranteed that the next control information/data information will not be missed, or as long as the first timer is in the first timer. After the timer, the next control information/data information can be received in time/early.
- the first terminal stops the first timer when the first duration is met, or when the first duration is exceeded.
- the first duration is associated with the time delay for the second terminal to acquire time domain resources for sidelink transmission, or is associated with the time domain resources of the sidelink indicated by the SCI, or, The first duration is configured to the first terminal through signaling.
- exceeding the first duration can be understood as the time exceeding the first duration from the start or after the start of the first timer.
- the time domain resources used for side-link transmission include at least one of time-domain resources used for initial transmission of side-link transmission, and/or time-domain resources used for retransmission of side-link transmission .
- the first duration is any of the following:
- T1 T2, T1+T3, T4, T1+T4, T2+T4, T1+T3+T4, T5, T5+T4, T5+T1, or T5+T1+T4.
- the first duration is a combined value of at least one or more of the following capability parameters or measurement parameters: T1, T2, T3, T4, or T5.
- the combined value is the sum of any of T1, T2, T3, T4, or T5.
- T1 is the time required for the second terminal to complete the resource detection and selection process
- T2 is the time required for the second terminal to identify candidate resources and select resources for sidelink transmission
- T3 is the second terminal’s feedback information
- T4 is the delay/lag time/duration of the resource selection window of the second terminal relative to the resource detection window, or the start time of the resource selection window relative to the end time of the resource detection window
- T5 is The length of time for the second terminal to complete SCI decoding/parse or the length of time for the second terminal to complete SCI decoding/parse and perform RSRP/RSSI measurement.
- the time required for the second terminal to identify candidate resources and select resources for sidelink transmission may be required for the second terminal to identify candidate resources and select a resource set for potential sidelink transmission duration.
- the RSRP measurement is the RSRP measurement for the DMRS in the resource detection process.
- the RSSI measurement is a measurement of the side link energy during the resource detection process.
- the foregoing T1 may be T3 in FIG. 6, the foregoing T2 may be T proc,1 in FIG. 6, the foregoing T4 may be T1 in FIG. 6, and the foregoing T5 may be T proc, 0 in FIG. 6.
- any duration value such as the first duration or the second duration can be configured to the terminal through signaling.
- the signaling configuration mentioned in this application includes any one or a combination of RRC signaling, MAC signaling or physical layer signaling.
- it may be RRC signaling through network equipment, or RRC signaling through PC5.
- a list (list or entry list) may be configured through the RRC signaling of the network device, and the entry index may be indicated through the SCI.
- an entry list may be configured through PC5 RRC signaling, and an index (index or entry index) may be indicated through SCI.
- the first duration will be set according to the highest or lowest capability value of the terminal to ensure that it is applicable to different terminals.
- the first duration will be set correspondingly according to the default maximum capability value or minimum capability value to ensure that it is applicable to different terminals. That is, make sure you don't overestimate any duration value, nor overestimate any duration value.
- the setting may be set by a network device, or set by the sending terminal and notified to the receiving terminal.
- the first terminal may also stop the first timer before the fourth time or the fourth time.
- the fourth moment is associated with the time domain resource of the side link indicated by the SCI in step 501 above.
- “associated with” refers to the time domain resources of the side link occupied or indicated by the SCI.
- the time domain resources of the side link occupied by the SCI refer to one or more symbols occupied by the SCI.
- stopping the first timer before the fourth time is to ensure that the next control information/data information is not missed or missed as far as possible, or that the next control information/data information is received in time/early.
- the time domain resource of the side link indicated by the SCI associated at the fourth moment is different from the time domain resource of the side link indicated by the SCI associated at the first moment.
- the first terminal may stop the first timer after the fourth time.
- stopping the first timer after the fourth moment is to understand that the first timer is the minimum limit. As long as it is after the first timer, it can be guaranteed that the next control information/data information will not be missed, or as long as the first timer is in the first timer. After the timer, the next control information/data information can be received in time/early.
- the time domain resources of the side links indicated by the SCI in step 501 include a first resource set, and the first resource set includes time domain resources of N side links, and N is a positive integer.
- the fourth moment can be any of the following:
- the duration corresponding to the first difference refers to the duration occupied by the time slot corresponding to the first difference or the duration occupied by the time slot corresponding to the first difference being rounded up or down.
- the first difference value corresponds to 3 time slots
- the first difference value is the duration occupied by the 3 time slots.
- the first difference corresponds to 3.5 time slots
- the first difference is the length of time occupied by 4 time slots or the length of time occupied by 3 time slots.
- the sum of the time lengths corresponding to the first time and the first difference may also be a value obtained by rounding up or down the sum of the time lengths corresponding to the first time and the first difference.
- the duration corresponding to the second difference value refers to the duration occupied by the time slot corresponding to the second difference value or the duration occupied by the time slot corresponding to the second difference value being rounded up or down.
- the second difference value corresponds to 4 time slots, and the second difference value is the duration occupied by 4 time slots.
- the second difference value corresponds to 4.3 time slots, and the second difference value is the length of time occupied by 5 time slots or the length of time occupied by 4 time slots.
- the sum of the durations corresponding to the second time and the second difference may also be a value obtained by rounding up or down the sum of the durations corresponding to the second time and the second difference.
- the time length is taken as an example of a time slot, and may not be limited to a time slot.
- it may be a subframe, a symbol, or a mini-slot.
- the first difference and/or the second difference are absolute values, that is, the absolute value of the subtraction of the two.
- the aforementioned third offset is a positive value.
- the third offset may also be a negative value.
- adding the third offset at the fifth time can also be understood as the third offset minus a positive number at the fifth time.
- the fifth moment in 1) to 4) above can be any of the following:
- x is an integer less than or equal to N and greater than 1.
- x is an integer less than or equal to N and greater than 1.
- x is an integer less than or equal to N and greater than 1.
- x is an integer less than or equal to N and greater than 1.
- the time domain resources of the side link indicated by the SCI in step 501 include the second resource set, the second resource set includes the periodic first resource set, and the first resource set includes the timing of N side links.
- Domain resource, N is a positive integer.
- the fourth moment can be any of the following:
- the third difference refers to the difference between the first time (that is, the start time of the first timer) and the sixth time.
- the duration corresponding to the third difference value refers to the duration occupied by the time slot corresponding to the third difference value or the duration occupied by the time slot corresponding to the third difference value being rounded up or down.
- the third difference value corresponds to 3 time slots, and the third difference value is the length of time occupied by the 3 time slots.
- the third difference value corresponds to 3.5 time slots, and the third difference value is the length of time occupied by 4 time slots or the length of time occupied by 3 time slots.
- the sum of the durations corresponding to the first moment and the third difference may also be a value obtained by rounding up or down the sum of the durations corresponding to the first moment and the third difference.
- the duration corresponding to the fourth difference value refers to the duration occupied by the time slot corresponding to the fourth difference value or the duration occupied by the time slot corresponding to the fourth difference value being rounded up or down.
- the fourth difference value corresponds to 4 time slots
- the fourth difference value is the duration occupied by the 4 time slots.
- the fourth difference value corresponds to 4.3 time slots
- the fourth difference value is the length of time occupied by 5 time slots or the length of time occupied by 4 time slots.
- the sum of the durations corresponding to the second time and the fourth difference value may also be a value obtained by rounding up or down the sum of the durations corresponding to the second time and the fourth difference value.
- the third difference and/or the third difference are absolute values, that is, the absolute value of the subtraction of the two.
- the foregoing fourth offset is a positive value.
- the fourth offset may also be a negative value.
- adding the fourth offset at the sixth time can also be understood as the fourth offset at the sixth time minus a positive number.
- y is a positive integer
- z is a positive integer less than or equal to N.
- y is a positive integer
- z is a positive integer less than or equal to N.
- y is a positive integer
- z is a positive integer less than or equal to N.
- y is a positive integer
- z is a positive integer less than or equal to N.
- the above gives different implementation methods for the first time, the second time, the third time, and the fourth time when the SCI in step 501 is a first-level SCI.
- the following gives different implementation methods for the first time, the second time, the third time, and the fourth time when the SCI in the above step 501 is a two-level SCI (including the first-level SCI and the second-level SCI).
- the first timer starts the first timer at the first time, the first time can be any of the following kind:
- the fourth time can be any of the following:
- x is an integer less than or equal to N and greater than 1.
- x is an integer less than or equal to N and greater than 1.
- x is an integer less than or equal to N and greater than 1.
- x is an integer less than or equal to N and greater than 1.
- the second time can be any of the following kind:
- the second offset is configured by RRC signaling, and the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the SCI in step 501 is a two-level SCI (including the first-level SCI and the second-level SCI)
- the third time is based on the first duration It is obtained that the first duration is associated with the time delay for the second terminal to acquire the time domain resource used for sidelink transmission.
- the first duration is any of the following:
- T1 T2, T1+T3, T4, T1+T4, T2+T4, T1+T3+T4, T5, T5+T4, T5+T1, or T5+T1+T4;
- the first duration is a combined value of at least one or more of the following capability parameters or measurement parameters: T1, T2, T3, T4, or T5.
- the combined value is the sum of any of T1, T2, T3, T4, or T5.
- T1 is the time required for the second terminal to complete the resource detection and selection process
- T2 is the time required for the second terminal to identify candidate resources and select resources for sidelink transmission
- T3 is the second terminal’s feedback information
- T4 is the delay/lag time/duration of the resource selection window of the second terminal relative to the resource detection window, or the start time of the resource selection window relative to the end time of the resource detection window
- T5 is The length of time for the second terminal to complete SCI decoding/parse or the length of time for the second terminal to complete SCI decoding/parse and perform RSRP/RSSI measurement.
- the time required for the second terminal to identify candidate resources and select resources for sidelink transmission may be required for the second terminal to identify candidate resources and select a resource set for potential sidelink transmission duration.
- the RSRP measurement is the RSRP measurement for the DMRS in the resource detection process.
- the RSSI measurement is a measurement of the side link energy during the resource detection process.
- the SCI in step 501 is a second-level SCI (including the first-level SCI and the second-level SCI)
- the first-level SCI indicates the second resource set
- the second resource set includes the periodic first resource set
- the first resource set includes time domain resources of N side links, N is a positive integer, and the first timer stops the first timer at the fourth moment, then the fourth moment can be any of the following:
- y is a positive integer
- z is a positive integer less than or equal to N.
- y is a positive integer
- z is a positive integer less than or equal to N.
- y is a positive integer
- z is a positive integer less than or equal to N.
- y is a positive integer
- z is a positive integer less than or equal to N.
- the first terminal when the feedback information sent by the first terminal is a side-link measurement report or side-link channel state information, the first terminal starts the first timer at the first time or the second time, and at the first time Within at least one time unit within the starting time of a timer, the first terminal does not need to monitor the control information or data information of the side link until the first terminal stops the first timer at the third time or the fourth time. Specifically, the first terminal starts the first timer at the first moment, after sending the feedback information, and before the second terminal sends corresponding data according to the feedback information, there is no need to monitor the control information or data of the side link information. When the first moment is the last of the resources included in the SCI, the termination moment of the first timer is the third moment.
- the first terminal does not need to monitor the control information or data information of the side link.
- the termination time of the first timer is the fourth time. That is, before the next resource-related moment indicated by the SCI, the first terminal does not need to monitor the control information or data information of the side link.
- the first terminal starts the first timer at the first time or the second time, and within at least one time unit within the start time of the first timer, the first terminal does not The retransmission data of the side uplink needs to be monitored until the first terminal stops the first timer at the third time or the fourth time. Specifically, the first terminal starts the first timer at the first moment, and after sending the feedback information, and before the second terminal sends corresponding data according to the feedback information, there is no need to monitor the retransmission data of the side uplink.
- the termination moment of the first timer is the third moment.
- the first terminal does not need to monitor the retransmitted data of the side uplink.
- the termination time of the first timer is the fourth time. That is, before the next resource-related time indicated by the SCI, the first terminal does not need to monitor the retransmitted data of the side uplink.
- the above-mentioned third time is a time after the first time or the second time
- the fourth time is a time after the first time or the second time.
- Step 504 The first terminal starts a second timer.
- the first terminal starts the second timer at the seventh time
- the seventh time is the stop time of the first timer or a time after the stop time of the first timer.
- the seventh time is the first symbol after the stop time of the first timer.
- the second timer is used to indicate the time to monitor the side-link control information and/or the side-link data information part.
- the second timer is used to indicate the time period for monitoring the retransmission data of the side uplink.
- the retransmitted data here may be control information or data information used to transmit the retransmitted data on the side link.
- the retransmitted data here may be control information or data information used to transmit the first HARQ process/retransmitted data corresponding to the first HARQ process on the side link.
- Step 505 The first terminal stops the second timer.
- the first terminal stops the second timer at the eighth time.
- the eighth time is obtained according to the second duration.
- the second duration is configured through RRC signaling or is associated with the duration of the resource selection window.
- the first terminal stops the second timer.
- the second duration is associated with the duration of the resource selection window, or associated with the duration of resource selection/reselection, or the second duration is configured to the first terminal through signaling.
- the signaling is the RRC signaling of the network device, or the RRC signaling of the PC5.
- the time exceeding the second time period can be understood as the time exceeding the second time period from or after starting the second timer.
- a duration value associated with the duration of the resource selection window may be the duration of the resource selection window of the second terminal, or the duration of the default/predefined resource selection window, or the default/predefined resource selection window Add a parameter value to the duration of, or multiply the duration of the default/predefined resource selection window by a parameter value.
- the duration of the default/predefined resource selection window has nothing to do with any terminal, and may be the maximum value of the resource selection window of the terminal working on the side link, so as to avoid missing any transmission control information/data information, In other words, any retransmitted control information/data information is missed.
- the first terminal can start to monitor the control information and/or data information of the side uplink, or monitor the reconfiguration of the side uplink within the starting time of the second timer. Transfer data. On the one hand, it can be ensured that the first terminal can monitor the control information and/or the data information of the side link, or monitor the retransmission data of the side link within the corresponding time period. On the other hand, since the monitoring time period is set, it can avoid blind monitoring and cause serious power consumption, that is, energy saving can be achieved.
- the above feedback information is HARQ information
- the HARQ information is NACK as an example.
- the side link resource reserved by the SCI is one (that is, the resource used to transmit TB1 in FIG. 7).
- the first timer is set to:
- Start time the first symbol after the first HARQ feedback time, or the first symbol after the first HARQ feedback time, plus an offset MinTimeGapPSFCH;
- the first duration is the aforementioned T1, T2, T1+T3, T4, T1+T4, T2+T4, T1+T3+T4, T5, T5+T4, T5+T1, or T5+T1+T4.
- the second timer is set to:
- Start time the stop time of the first timer or the time after the stop time is taken as the start time of the second timer;
- Stop time The second timer starts from the start and stops after the second time duration.
- the second duration is a duration value configured by the network device through RRC signaling or associated with the duration of the resource selection window.
- the first terminal may stop the second timer in advance.
- blind retransmission is enabled.
- there is one side link resource reserved by the SCI that is, the resource used to transmit TB1 in FIG. 8).
- the first timer is set to:
- start time the first symbol after the termination of the time domain resource transmission for the first reserved side link, or the first symbol after the termination of the first reserved side link time domain resource transmission Sign plus an offset MinTimeGapPSFCH;
- the first duration is the aforementioned T1, T2, T1+T3, T4, T1+T4, T2+T4, T1+T3+T4, T5, T5+T4, T5+T1, or T5+T1+T4.
- the second timer is set to:
- Start time the stop time of the first timer or the time after the stop time is taken as the start time of the second timer;
- Stop time The second timer starts from the start and stops after the second time duration.
- the second duration is a duration value configured by the network device through RRC signaling or associated with the duration of the resource selection window.
- the first terminal may stop the second timer in advance.
- the side link resources reserved by the SCI are two (that is, the two resources used to transmit two TB1 in Figure 9).
- the resource corresponding to the first TB1 is referred to as resource 1, and the second TB1 The corresponding resource is called resource 2).
- the first time that HARQ feedback can be performed is after resource 1 and before resource 2.
- the first timer is set to:
- Start time the first symbol after the first HARQ feedback time, or the first symbol after the first HARQ feedback time, plus an offset MinTimeGapPSFCH;
- the second timer is set to:
- Start time the stop time of the first timer or the time after the stop time is taken as the start time of the second timer;
- Stop time The second timer starts from the start and stops after the second time duration.
- the second duration is a duration value configured by the network device through RRC signaling or associated with the duration of the resource selection window.
- the first terminal may stop the second timer in advance.
- the side link resources reserved by the SCI are two (that is, the two resources used to transmit two TB1 in Figure 9).
- the resource corresponding to the first TB1 is referred to as resource 1, and the second TB1 The corresponding resource is called resource 2).
- the first moment when HARQ feedback can be performed is after the second TB1 and before the first TB2.
- the data of the second TB1 is unsuccessful and needs to be retransmitted.
- the first timer is set to:
- Start time the first symbol after the first HARQ feedback time, or the first symbol after the first HARQ feedback time, plus an offset MinTimeGapPSFCH;
- the first duration is the aforementioned T1, T2, T1+T3, T4, T1+T4, T2+T4, T1+T3+T4, T5, T5+T4, T5+T1, or T5+T1+T4.
- the second timer is set to:
- start time the stop time of the first timer is used as the start time of the second timer
- Stop time The second timer starts from the start and stops after the second time duration.
- the second duration is a duration value configured by the network device through RRC signaling or associated with the duration of the resource selection window.
- the first terminal may stop the second timer in advance.
- the stop time of the first timer and the start time of the second timer can be set as the start time of the next resource period. This is because when the channel is relatively congested, even if the first terminal sends the feedback information NACK to the second terminal, considering that the second terminal may not be able to detect new resources for retransmission of data because the channel is relatively congested, the second terminal Unable to reallocate resources to retransmit data. Therefore, in this case, the resources of the next resource period can be used for retransmission of data.
- the priority value contained in the SCI When the priority value is less than the priority threshold, it indicates that the probability of obtaining resources through preemption is low. Second, the start time of the timer is set to the start time of the next resource period.
- the channel congestion rate threshold and/or priority threshold can be configured through RRC signaling.
- RRC signaling For example, it is configured through RRC signaling of network equipment or RRC signaling of PC5.
- the above two schemes can also be used in combination.
- the first terminal receives the SCI from the second terminal, and the SCI is used to indicate the time domain resources of the side link;
- the first terminal starts a first timer at a first time, the first time is associated with the time domain resources of the side link occupied or indicated by the SCI, and the second time is associated with the first Time domain resources occupied by feedback information sent by a terminal, where the feedback information includes side-link measurement reports, side-link CSI, or side-link HARQ information, and the first timer is used to indicate At least one time unit after the start of the first timer does not monitor the control information of the side link and/or the data information of the side link;
- the first terminal stops the first timer at the third time or the fourth time, so The third moment is the start moment of the next resource period, and the fourth moment is associated with the time domain resource of the side link indicated by the SCI.
- the meanings of the first time, the second time, and the fourth time are the same as the meanings of the first time, the second time, and the fourth time in the foregoing embodiment, and reference may be made to the foregoing description.
- the meaning of the third time here is different from the meaning of the third time in the foregoing embodiment, and the third time here represents the start time of the next resource period.
- the first terminal starts a second timer at a fifth time
- the fifth time is the stop time of the first timer or the stop time of the first timer The first symbol after it.
- the first terminal stops the second timer at a sixth moment, the sixth moment is obtained according to a second duration, and the second duration is configured through RRC signaling , Or a duration value associated with the duration of the resource selection window, or a duration value associated with the duration of resource selection/reselection.
- This embodiment is used to save power consumption of the terminal on the sending side (ie, the second terminal).
- the second terminal starts the first timer after sending the SCI to the first terminal, and the first timer is used to indicate that at least one time unit after the first timer is started does not monitor the feedback information sent by the first terminal .
- Not monitoring the feedback information sent by the first terminal can be understood as not requiring/unnecessarily monitoring the feedback information sent by the first terminal. That is, the first terminal will not send feedback information to the second terminal during the starting time of the first timer, so the second terminal does not need to monitor the feedback information during this time, so that the purpose of energy saving can be achieved.
- the first terminal will not send the first HARQ process (HARQ process) feedback information to the second terminal during the start-up period of the first timer, so the second terminal is within this period of time. There is no need to monitor the feedback information, which can achieve the purpose of energy saving.
- HARQ process HARQ process
- the second terminal starts the second timer.
- the second timer may be started at the time when the first timer is stopped, or the second timer may be started at a certain time after the time when the first timer is stopped.
- the second timer is used to indicate the time period for monitoring feedback information. That is, the second terminal only starts to monitor the feedback information within the time period after the second timer is started.
- Step 1101 The second terminal sends an SCI to the first terminal.
- the first terminal receives the SCI.
- the first terminal may receive the SCI.
- This step 1101 is the same as step 501 in the above embodiment of FIG. 5, and reference may be made to the foregoing description.
- Step 1102 The second terminal starts the first timer.
- the second terminal starts the first timer at a certain time after sending the SCI, and the first timer is used to instruct not to monitor feedback information for at least one time unit after the first timer is started, so that the purpose of energy saving can be achieved.
- the first terminal may start the first timer at the first moment.
- the first moment is associated with the time domain resources of the side link occupied or indicated by the SCI in step 1101.
- “associated with” refers to the time domain resources of the side link occupied or indicated by the SCI.
- the time domain resources of the side link occupied by the SCI refer to one or more symbols occupied by the SCI.
- the first moment can be any of the following:
- the first offset is configured by RRC signaling, and the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the first offset may also be predefined.
- the first offset may be the feedback information processing delay.
- Step 1103 The second terminal stops the first timer.
- This step is optional.
- the second terminal can stop the first timer at the second time or before the second time.
- the second time is a certain time before the first terminal sends the feedback information, and the second time is associated with the first terminal to send The time domain resources occupied by the feedback information.
- stopping the first timer before the second moment is to ensure that the next feedback information is not missed, or that the next feedback information is received in time/early.
- the second terminal may stop the first timer after the second moment.
- stopping the first timer after the second moment is to understand that the first timer is the minimum limit, as long as it is after the first timer, it can be guaranteed not to miss receiving the next feedback information, or as long as it is after the first timer You can receive the next feedback information in time/early.
- the feedback information here includes the measurement report of the side link, the CSI of the side link, or the HARQ information of the side link.
- the second moment is any of the following:
- the time domain resources occupied by the feedback information can be understood as the time slot occupied by the feedback information or the time slot where the symbol occupied by the feedback information is located.
- the second offset is configured by RRC signaling, and the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the second offset may also be predefined.
- the second terminal stops the first timer when the first duration is met, or when the first duration is exceeded.
- the first duration is associated with the time domain location where the feedback information is sent, or the first duration is configured to the second terminal through signaling.
- the signaling is the RRC signaling of the network device, or the RRC signaling of the PC5.
- exceeding the first duration can be understood as the time exceeding the first duration from the start or after the start of the first timer.
- Step 1104 The second terminal starts a second timer.
- the second terminal starts the second timer at the third time or after the third time
- the third time is the stop time of the first timer or the first symbol after the stop time of the first timer
- the second The timer is used to indicate the time period for monitoring feedback information.
- Step 1105 The second terminal stops the second timer.
- the second terminal stops the second timer at the fourth moment, and the fourth moment is a value pre-configured by the network device or the second terminal, or a pre-defined value.
- a predefined value includes: a predefined time slot (slot), or the number of timeslots or symbols occupied by a piece of feedback information. For example, one HARQ information occupies two symbols or three symbols, etc.
- the second terminal can start monitoring the feedback information within the starting time of the second timer. On the one hand, it can be ensured that the second terminal can monitor the feedback information within a corresponding time period. On the other hand, since the monitoring time period is set, it can avoid blind monitoring and cause serious power consumption, that is, energy saving can be achieved.
- the second terminal stops the second timer.
- the second duration is associated with the duration occupied by the feedback information, or the second duration is configured to the second terminal through signaling.
- the signaling is the RRC signaling of the network device, or the RRC signaling of the PC5.
- the time exceeding the second time period can be understood as the time exceeding the second time period from or after starting the second timer.
- the union of multiple timers needs to be taken to determine whether it is in the activator. That is, even if one of the timers indicates that monitoring is not required, and the other definer indicates that it needs to be in the active period or needs to be monitored, the first terminal or the second terminal still needs to be in the active period or needs to be monitored.
- the start symbol of the SCI may be the start point of the start symbol of the SCI or the end point of the start symbol of the SCI.
- the start symbol of the SCI may also be referred to as the start of the SCI, or the start of the first terminal receiving the SCI, or the start time of the first terminal receiving the SCI.
- next symbol of the start symbol of the SCI may be the start point of the next symbol of the start symbol of the SCI, or the end point of the next symbol of the start symbol of the SCI.
- the end point of the start symbol of the SCI and the start point of the next symbol of the start symbol of the SCI may be the same time.
- the next symbol of the start symbol of the SCI may also be called after the first terminal receives the start symbol of the SCI, or it may be called the termination of the first terminal receiving the start symbol of the SCI. time.
- the termination symbol of the SCI may be the start point of the termination symbol of the SCI or the termination point of the termination symbol of the SCI.
- the termination symbol of the SCI may also be referred to as the end of the SCI, or the end of receiving the SCI by the first terminal, or the end time or the end time of the first terminal receiving the SCI.
- next symbol of the termination symbol of the SCI may be the start point of the next symbol of the termination symbol of the SCI, or the termination point of the next symbol of the termination symbol of the SCI.
- the termination point of the termination symbol of the SCI and the start point of the next symbol of the termination symbol of the SCI may be the same time.
- the next symbol of the termination symbol of the SCI may also be referred to as the termination time after the first terminal receives the termination symbol of the SCI, or the termination time when the first terminal receives the termination symbol of the SCI.
- the start symbol of the first time domain resource indicated by the SCI may be the start point of the start symbol of the first time domain resource indicated by the SCI, or the first symbol indicated by the SCI The end point of the start symbol of the time domain resource.
- the start symbol of the first time domain resource indicated by the SCI may be the same as the start symbol of the SCI, or, considering the number of symbols required by automatic gain control (AGC), the SCI
- the start symbol of the first time domain resource indicated may be earlier than the start symbol of the SCI.
- the start symbol of the SCI may be the start symbol of the first time domain resource indicated by the SCI plus the number of AGC symbols.
- the symbol next to the start symbol of the first time domain resource indicated by the SCI may be the start point of the next symbol of the start symbol of the first time domain resource indicated by the SCI, or The ending point of the next symbol of the start symbol of the first time domain resource indicated by the SCI.
- the end point of the start symbol of the first time domain resource and the start point of the next symbol of the start symbol of the first time domain resource may be the same time.
- the termination symbol of the first time domain resource indicated by the SCI may be the start point of the termination symbol of the first time domain resource indicated by the SCI, or the first time domain indicated by the SCI The termination point of the termination symbol of the resource.
- the symbol next to the termination symbol of the first time domain resource indicated by the SCI may be the start point of the next symbol of the termination symbol of the first time domain resource indicated by the SCI, or the The termination point of the next symbol of the termination symbol of the first time domain resource indicated by the SCI.
- the termination point of the termination symbol of the first time domain resource and the start point of the next symbol of the termination symbol of the first time domain resource may be the same time.
- start symbol of time domain resources can also be referred to as “start of time domain resources” or “start time of time domain resources”
- terminal symbols of time domain resources can also be referred to as " The end of the time domain resource” or the “end time of the time domain resource”
- start point of the symbol can also be referred to as the “start time of the symbol” or “the beginning of the symbol”.
- symbol end point can also be called “Symbol end moment” or “Symbol end”.
- the next symbol of the symbol can also be called the “next symbol after the symbol”, or called the “after the symbol”, or called the “first symbol after the symbol”.
- the next symbol of the termination symbol can also be called the next symbol after the termination symbol, or after the termination symbol, or the first symbol after the termination symbol.
- the start symbol of the SCI and the start symbol of the first time domain resource indicated by the SCI are the same time. In other examples, the start symbol of the SCI and the start symbol of the first time domain resource indicated by the SCI are not at the same time, and automatic gain control (AGC) requires 1 symbol.
- the first time domain resource can occupy 14 or 12 symbols.
- the SCI may occupy 1, 2, or 3 symbols, or 1, 2, or 3 symbols after AGC.
- the first-level SCI can have 1, 2, or 3 symbols, or 1, 2, or 3 symbols after AGC.
- the second level SCI can occupy 1, 2 or 3 symbols.
- the second level SCI is located after the first level SCI.
- it can be followed by the first level SCI or separated from the first level SCI by one or more symbols. The foregoing does not limit whether the frequency domain resource occupies a subchannel or a part of a subchannel.
- the start symbol of the xth time domain resource in the first resource set indicated by the SCI may be, for example, the start point of the start symbol of the xth time domain resource in the first resource set indicated by the SCI, Or it is the end point of the start symbol of the xth time domain resource in the first resource set indicated by the SCI.
- the next symbol of the start symbol of the xth time domain resource in the first resource set indicated by the SCI may be the start symbol of the xth time domain resource in the first resource set indicated by the SCI
- the starting point of the next symbol of, or the ending point of the next symbol of the starting symbol of the xth time domain resource in the first resource set indicated by the SCI may be the start symbol of the xth time domain resource in the first resource set indicated by the SCI.
- the termination symbol of the xth time domain resource in the first resource set indicated by the SCI may be, for example, the starting point of the termination symbol of the xth time domain resource in the first resource set indicated by the SCI, or The termination point of the termination symbol of the x-th time domain resource in the first resource set indicated by the SCI.
- the next symbol of the termination symbol of the xth time domain resource in the first resource set indicated by the SCI may be, for example, the next symbol of the termination symbol of the xth time domain resource in the first resource set indicated by the SCI.
- the start symbol of the xth time domain resource in the yth first resource set in the second resource set indicated by the SCI may be, for example, the yth first resource set in the second resource set indicated by the SCI.
- the symbol next to the start symbol of the x-th time domain resource in the y-th first resource set in the second resource set indicated by the SCI may be, for example, the first symbol in the second resource set indicated by the SCI
- the starting point of the next symbol of the start symbol of the xth time domain resource in the y first resource sets, or the xth in the yth first resource set in the second resource set indicated by the SCI The ending point of the next symbol of the start symbol of a time domain resource.
- the termination symbol of the xth time domain resource in the yth first resource set in the second resource set indicated by the SCI may be, for example, the yth first resource in the second resource set indicated by the SCI.
- the symbol next to the termination symbol of the x-th time domain resource in the y-th first resource set in the second resource set indicated by the SCI may be, for example, the y-th symbol in the second resource set indicated by the SCI.
- the start point of the next symbol of the end symbol of the xth time domain resource in the first resource set, or the xth time in the yth first resource set in the second resource set indicated by the SCI The terminating point of the next symbol of the terminating symbol of the domain resource.
- the device 1200 includes a transceiver unit 1210, a timer starting unit 1220, and a timer. Stop the unit 1230.
- the transceiver unit 1210 is used to receive side link control information SCI from the second terminal, where the SCI is used to indicate the time domain resources of the side link;
- the timer start unit 1220 is used to Start a first timer at time, the first time is associated with the time domain resources of the side link occupied or indicated by the SCI, and the second time is associated with the time occupied by the feedback information sent by the first terminal Domain resources, the feedback information includes side-link measurement reports, side-link channel state information CSI, or side-link hybrid automatic repeat request HARQ information, and the first timer is used to indicate At least one time unit after the start of the first timer does not monitor the control information of the side link and/or the data information of the side link;
- the third time is obtained according to a first time length, and the first time length is associated with the time delay for the second terminal to acquire time domain resources for sidelink transmission, and the first time
- the four moments are associated with the time domain resources of the side link indicated by the SCI.
- the first moment is any one of the following:
- the first offset is configured by radio resource control RRC signaling
- the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the second moment is any one of the following:
- the next time slot of the time slot occupied by the feedback information is the next time slot of the time slot occupied by the feedback information.
- the second offset is configured by RRC signaling
- the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the first duration is as follows:
- T1 T2, T1+T3, T4, T1+T4, T2+T4, T1+T3+T4, T5, T5+T4, T5+T1, or T5+T1+T4;
- the T1 is the time required for the second terminal to complete the resource detection and selection process
- the T2 is the time required for the second terminal to identify candidate resources and select resources for sidelink transmission
- the T3 is the processing delay of the second terminal for the feedback information
- the T4 is the delay of the resource selection window of the second terminal relative to the resource detection window
- the T5 is the second terminal completing the SCI The duration of decoding/analysis or the duration of the second terminal completing SCI decoding/analysis and performing reference signal received power RSRP/received signal strength indication RSSI measurement.
- the time domain resources of the side link indicated by the SCI include a first resource set, and the first resource set includes the time domain resources of N side links, and N is a positive integer ;
- the fourth moment is the fifth moment, or the fifth moment plus the third offset, or the sum of the durations corresponding to the first moment and the first difference, or the second moment and the second difference.
- the sum of the corresponding time lengths, the first difference is the difference between the first time and the fifth time
- the second difference is the difference between the second time and the fifth time;
- the fifth moment is any one of the following:
- x is an integer less than or equal to N and greater than 1.
- the time domain resources of the side link indicated by the SCI include a second resource set, the second resource set includes a periodic first resource set, and the first resource set includes Time domain resources of N side links, where N is a positive integer;
- the fourth time is the sixth time, or the sixth time plus the fourth offset, or the difference between the first time and the third time
- the fourth difference being the The difference between the second moment and the sixth moment; wherein, the sixth moment is any one of the following:
- y is a positive integer
- z is a positive integer less than or equal to N.
- the SCI includes a first-level SCI and a second-level SCI; the first moment is any one of the following:
- the termination symbol of the first level SCI or the termination symbol of the second level SCI is the termination symbol of the first level SCI or the termination symbol of the second level SCI
- the first-level SCI indicates a first resource set, and the first resource set includes time-domain resources of N sidelinks, and N is a positive integer; the fourth moment Any of the following:
- x is an integer less than or equal to N and greater than 1.
- the first-level SCI indicates a second resource set, the second resource set includes a periodic first resource set, and the first resource set includes N side links N is a positive integer; the fourth moment is any one of the following:
- y is a positive integer
- z is a positive integer less than or equal to N.
- the timer starting unit 1220 is further configured to start a second timer at a seventh time, where the seventh time is the stop time of the first timer or the first timer The first symbol after the stop time of the device.
- the timer stopping unit 1230 is further configured to stop the second timer at the eighth time, the eighth time is obtained according to the second time length, and the second time length is passed
- the RRC signaling configures either a duration value associated with the duration of the resource selection window or a duration value associated with the duration of the resource selection/reselection.
- the feedback information is the measurement report of the side link or the CSI of the side link
- the second timer is used to instruct to monitor the control information of the side link and/or the side link.
- the time period of the data information of the uplink is the time period of the data information of the uplink.
- the feedback information is HARQ information
- the second timer is used to indicate a time period for monitoring the retransmission data of the side uplink.
- the transceiver unit 1210 is configured to send side link control information SCI to the first terminal, where the SCI is used to indicate the time domain resources of the side link; the timer starting unit 1220 is used to start the first timing at the first moment The first time is associated with the time domain resources of the side link occupied or indicated by the SCI, and the first timer is used to indicate that at least one time unit after the first timer is started does not listen for feedback Information; a timer stopping unit 1230, configured to stop the first timer at a second moment, the second moment being associated with the time domain resources occupied by the feedback information sent by the first terminal, the feedback information including Side-link measurement report, side-link channel state information CSI, or side-link hybrid automatic repeat request HARQ information.
- the first moment is any one of the following:
- the first offset is configured by radio resource control RRC signaling
- the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the second moment is any one of the following:
- the last time slot of the time slot occupied by the feedback information is the last time slot of the time slot occupied by the feedback information.
- the second offset is configured by RRC signaling
- the RRC signaling is PC5 RRC signaling or RRC signaling from a network device.
- the timer starting unit 1220 is further configured to start a second timer at a third time, where the third time is the stop time of the first timer or the first timer The first symbol after the stop time of the device, the second timer is used to indicate the time period for monitoring the feedback information.
- the timer stopping unit 1230 is further configured to stop the second timer at a fourth moment, where the fourth moment is a value pre-configured by the network device or the second terminal, Or a predefined value.
- each of the above-mentioned units may also be referred to as a module or a circuit, etc., and each of the above-mentioned units may be provided independently, or may be fully or partially integrated.
- the aforementioned communication device 1200 may further include a storage unit for storing data or instructions (also referred to as codes or programs), and each of the aforementioned units may interact or couple with the storage unit to implement corresponding methods or Function.
- a storage unit for storing data or instructions (also referred to as codes or programs), and each of the aforementioned units may interact or couple with the storage unit to implement corresponding methods or Function.
- the timer starting unit 1220 and the timer stopping unit 1230 may read data or instructions in the storage unit, so that the communication device implements the method in the foregoing embodiment.
- each unit in the device can be all implemented in the form of software called by processing elements; they can also be all implemented in the form of hardware; part of the units can also be implemented in the form of software called by the processing elements, and some of the units can be implemented in the form of hardware.
- each unit can be a separate processing element, or it can be integrated in a certain chip of the device for implementation.
- it can also be stored in the memory in the form of a program, which is called and executed by a certain processing element of the device. Function.
- each step of the above method or each unit above may be implemented by an integrated logic circuit of hardware in the processor element, or may also be implemented in a form of software calling through the processing element.
- the unit in any of the above devices may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (ASICs), or, one or Multiple microprocessors (digital singnal processors, DSPs), or, one or more field programmable gate arrays (Field Programmable Gate Arrays, FPGAs), or a combination of at least two of these integrated circuits.
- ASICs application specific integrated circuits
- DSPs digital singnal processors
- FPGAs Field Programmable Gate Arrays
- the unit in the device can be implemented in the form of a processing element scheduler
- the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call programs.
- CPU central processing unit
- these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).
- the above receiving unit is an interface circuit of the device for receiving signals from other devices.
- the receiving unit is an interface circuit used by the chip to receive signals from other chips or devices.
- the above unit for sending is an interface circuit of the device for sending signals to other devices.
- the sending unit is an interface circuit used by the chip to send signals to other chips or devices.
- FIG. 13 is a schematic structural diagram of a terminal provided by an embodiment of the application.
- the terminal is used to implement the operation of the terminal (such as the first terminal or the second terminal) in the above embodiments.
- the terminal includes: an antenna 1310, a radio frequency device 1320, and a signal processing part 1330.
- the antenna 1310 is connected to the radio frequency device 1320.
- the radio frequency device 1320 receives the information sent by the network device or other terminal through the antenna 1310, and sends the information sent by the network device or other terminal to the signal processing part 1330 for processing.
- the signal processing part 1330 processes the terminal information and sends it to the radio frequency device 1320.
- the radio frequency device 1320 processes the terminal information and sends it to the network equipment or other terminals via the antenna 1310.
- the signal processing part 1330 is used to realize the processing of each communication protocol layer of the data.
- the signal processing part 1330 may be a subsystem of the terminal, and the terminal may also include other subsystems, such as a central processing subsystem, for processing the terminal operating system and application layer; for another example, the peripheral subsystem is used for Realize the connection with other equipment.
- the signal processing part 1330 may be a separately provided chip.
- the above device may be located in the signal processing part 1330.
- the signal processing part 1330 may include one or more processing elements 1331, for example, a main control CPU and other integrated circuits, and an interface circuit 1333.
- the signal processing part 1330 may further include a storage element 1332.
- the storage element 1332 is used to store data and programs.
- the program used to execute the method executed by the terminal in the above method may or may not be stored in the storage element 1332, for example, in a memory other than the signal processing part 1330
- the signal processing part 1330 loads the program into the cache for use.
- the interface circuit 1333 is used to communicate with the device.
- the above device may be located in the signal processing part 1330, the signal processing part 1330 may be realized by a chip, the chip includes at least one processing element and an interface circuit, wherein the processing element is used to perform each step of any method executed by the above terminal, the interface circuit Used to communicate with other devices.
- the unit that implements each step in the above method can be implemented in the form of a processing element scheduler.
- the device includes a processing element and a storage element, and the processing element calls a program stored by the storage element to execute the above method embodiments.
- the storage element may be a storage element whose processing element is on the same chip, that is, an on-chip storage element.
- the program used to execute the method executed by the terminal in the above method may be a storage element on a different chip from the processing element, that is, an off-chip storage element.
- the processing element calls or loads a program from the off-chip storage element on the on-chip storage element to call and execute the method executed by the terminal in the above method embodiment.
- the terminal that implements each step in the above method may be configured as one or more processing elements, and these processing elements are provided on the signal processing part 1330.
- the processing elements here may be integrated circuits, for example: One or more ASICs, or, one or more DSPs, or, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.
- the units that implement each step in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC), and the SOC chip is used to implement the above method.
- SOC system-on-a-chip
- At least one processing element and storage element can be integrated in the chip, and the above terminal execution method can be implemented by the processing element calling the stored program of the storage element; or, at least one integrated circuit can be integrated in the chip for realizing the above terminal execution Or, can be combined with the above implementations, the functions of some units are implemented in the form of calling programs by processing elements, and the functions of some units are implemented in the form of integrated circuits.
- the above device may include at least one processing element and an interface circuit, wherein at least one processing element is used to execute any of the methods executed by the terminal provided in the above method embodiments.
- the processing element can execute part or all of the steps executed by the terminal in the first way: calling the program stored in the storage element; or in the second way: combining instructions through the integrated logic circuit of the hardware in the processor element Part or all of the steps executed by the terminal are executed in a manner; of course, part or all of the steps executed by the terminal may be executed in combination with the first manner and the second manner.
- the processing element here is the same as the above description, and it may be a general-purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above methods, such as: one or more ASICs, or, one or more micro-processing DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms.
- the storage element can be a memory or a collective term for multiple storage elements.
- At least one refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
- at least one (piece, species) of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or Multiple.
- Multiple refers to two or more than two, and other quantifiers are similar.
- the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
- the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present invention.
- the implementation process constitutes any limitation.
- the disclosed system, device, and method can be implemented in other ways.
- the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
- the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
- the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
- the computer program product includes one or more computer instructions.
- the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
- the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
- the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
- the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
- the various illustrative logic units and circuits described in the embodiments of this application can be implemented by general-purpose processors, digital signal processors, application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, Discrete gates or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the described functions.
- the general-purpose processor may be a microprocessor.
- the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine.
- the processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. accomplish.
- the steps of the method or algorithm described in the embodiments of the present application can be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
- the software unit can be stored in random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), EPROM memory, EEPROM memory, registers, hard disks, removable disks, CD-ROM or notebooks. Any other storage media in the field.
- the storage medium may be connected to the processor, so that the processor can read information from the storage medium, and can store and write information to the storage medium.
- the storage medium may also be integrated into the processor.
- the processor and the storage medium can be arranged in the ASIC.
- These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
- the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
- the functions described in this application can be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium.
- the computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another.
- the storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.
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Abstract
本申请实施例提供通信方法、装置及***。该方法包括:第一终端在向第二终端发送反馈信息之后,启动第一定时器,第一定时器用于指示在第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息。也即,在第一定时器的启动时长内,第二终端不会向第一终端发送侧行链路的控制信息和/或侧行链路的数据信息,因此第一终端在这段时长内不必监听侧行链路的控制信息和/或侧行链路的数据信息,从而可以达到节能的目的。
Description
相关申请的交叉引用
本申请要求在2020年05月15日提交中国专利局、申请号为202010415430.5、申请名称为“通信方法、装置及***”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请实施例涉及通信技术领域,尤其涉及通信方法、装置及***。
在设备间通信(Device to Device,D2D)通信中,侧行链路资源是用于终端和终端之间的通信的资源。侧行链路资源可以包括频域的侧行链路资源和时域的侧行链路资源。
目前,侧行链路中的终端如穿戴设备等,对功耗比较敏感,如何节省终端的功耗成为亟需解决的问题。
发明内容
本申请实施例提供通信方法、装置及***,用以节约终端的功耗。
第一方面,本申请实施例提供一种通信方法,包括:第一终端接收来自第二终端的侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;所述第一终端在第一时刻或第二时刻启动第一定时器,所述第一时刻关联于所述SCI所占用或所指示的侧行链路的时域资源,所述第二时刻关联于所述第一终端发送的反馈信息所占用的时域资源,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI,或侧行链路的混合自动重传请求HARQ信息,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息。
基于上述方案,第一终端在向第二终端发送反馈信息之后,启动第一定时器,第一定时器用于指示在第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息。也即,在第一定时器的启动时长内,第二终端不会向第一终端发送侧行链路的控制信息和/或侧行链路的数据信息,因此第一终端在这段时长内不必监听侧行链路的控制信息和/或侧行链路的数据信息,从而可以达到节能的目的。
在一种可能的实现方法中,所述第一终端在第三时刻或第四时刻停止所述第一定时器,所述第三时刻是根据第一时长得到的,所述第四时刻关联于所述SCI指示的侧行链路的时域资源。
在另一种可能的实现方法中,当满足第一时长时,或者当超出第一时长时,所述第一终端停止所述第一定时器。
上述描述的第一时长关联于所述第二终端获取用于侧行链路传输的时域资源的时延,或者,关联于所述SCI指示的侧行链路的时域资源,或者,所述第一时长通过信令被配置给第一终端。所述信令为网络设备的RRC信令,或者PC5的RRC信令。
在一种可能的实现方法中,所述第一时刻为以下任一种:
所述SCI的起始符号;
所述SCI的起始符号的下一符号;
所述SCI的终止符号;
所述SCI的终止符号的下一符号;
所述SCI指示的第一个时域资源的起始符号;
所述SCI指示的第一个时域资源的起始符号的下一个符号;
所述SCI指示的第一个时域资源的终止符号;
所述SCI指示的第一个时域资源的终止符号的下一个符号;
所述SCI指示的第一个时域资源的终止符号加第一偏移量。
基于上述方案,第一时刻可以有多种不同的实现方案,实现较为灵活。
在一种可能的实现方法中,所述第一偏移量是由无线资源控制RRC信令配置的,所述RRC信令为PC5RRC信令或者来自网络设备的RRC信令。
在一种可能的实现方法中,所述第二时刻为以下任一种:
所述反馈信息的终止时刻;
所述反馈信息所占符号的下一个符号;
所述反馈信息所占符号加第二偏移量;
所述反馈信息所占时域资源的下一个时隙;
所述反馈信息所占时隙的下一个时隙。
基于上述方案,第二时刻可以有多种不同的实现方案,实现较为灵活。
在一种可能的实现方法中,所述第二偏移量是由RRC信令配置的,所述RRC信令为PC5RRC信令或者来自网络设备的RRC信令。
在一种可能的实现方法中,所述第一时长为以下任一种:
T1、T2、T1+T3、T4、T1+T4、T2+T4、T1+T3+T4、T5、T5+T4、T5+T1、或T5+T1+T4;
其中,所述T1为所述第二终端完成资源检测和选择过程所需要的时长,所述T2为所述第二终端识别候选资源和选择用于侧行链路传输的资源所需要的时长,所述T3为所述第二终端对于所述反馈信息的处理时延,所述T4为第二终端的资源选择窗相对于资源检测窗的延时,所述T5为所述第二终端完成SCI解码/解析的时长或者所述第二终端完成SCI解码/解析并且进行参考信号接收功率RSRP/接收信号强度指示RSSI测量的时长。
基于上述方案,第二时长可以有多种不同的实现方案,实现较为灵活。
在一种可能的实现方法中,所述SCI指示的侧行链路的时域资源包括第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为第五时刻、或第五时刻加第三偏移量、或所述第一时刻与第一差值对应的时长的和、或所述第二时刻与第二差值对应的时长的和,所述第一差值为所述第一时刻与第五时刻的差值,所述第二差值为所述第二时刻与第五时刻的差值;其中,所述第五时刻为以下任一种:
所述SCI指示的第一资源集合中的第x个时域资源的起始符号;
所述SCI指示的第一资源集合中的第x个时域资源的起始符号的下一符号;
所述SCI指示的第一资源集合中的第x个时域资源的终止符号;
所述SCI指示的第一资源集合中的第x个时域资源的终止符号的下一符号;
其中,x为小于或等于N、且大于1的整数。
基于上述方案,第四时刻可以有多种不同的实现方案,实现较为灵活。
在一种可能的实现方法中,所述SCI指示的侧行链路的时域资源包括第二资源集合,所述第二资源集合包括周期性的第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为第六时刻、或第六时刻加第四偏移量、或所述第一时刻与第三差值对应的时长的和、或所述第二时刻与第四差值对应的时长的和,所述第三差值为所述第一时刻与第六时刻的差值,所述第四差值为所述第二时刻与第六时刻的差值;其中,所述第六时刻为以下任一种:
所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号;
所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号的下一符号;
所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号;
所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号的下一符号;
其中,y为正整数,z为小于或等于N的正整数。
基于上述方案,第四时刻可以有多种不同的实现方案,实现较为灵活。
在一种可能的实现方法中,所述SCI包括第一级SCI和第二级SCI;所述第一时刻为以下任一种:
所述第一级SCI的起始符号或所述第二级SCI的起始符号;
所述第一级SCI的起始符号的下一符号或所述第二级SCI的起始符号的下一符号;
所述第一级SCI的终止符号或所述第二级SCI的终止符号;
所述第一级SCI的终止符号的下一符号或所述第二级SCI的终止符号的下一个符号;
所述第一级SCI指示的第一个时域资源的起始符号;
所述第一级SCI指示的第一个时域资源的起始符号的下一个符号;
所述第一级SCI指示的第一个时域资源的终止符号;
所述第一级SCI指示的第一个时域资源的终止符号的下一个符号。
基于上述方案,第一时刻可以有多种不同的实现方案,实现较为灵活。
在一种可能的实现方法中,所述第一级SCI指示了第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为以下任一种:
所述第一资源集合中的第x个时域资源的起始符号;
所述第一资源集合中的第x个时域资源的起始符号的下一符号;
所述第一资源集合中的第x个时域资源的终止符号;
所述第一资源集合中的第x个时域资源的终止符号的下一符号;
其中,x为小于或等于N、且大于1的整数。
基于上述方案,第四时刻可以有多种不同的实现方案,实现较为灵活。
在一种可能的实现方法中,所述第一级SCI指示了第二资源集合,所述第二资源集合包括周期性的第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为以下任一种:
所述第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号;
所述第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号的下一符号;
所述第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号;
所述第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号的下一符号;
其中,y为正整数,z为小于或等于N的正整数。
基于上述方案,第四时刻可以有多种不同的实现方案,实现较为灵活。
在一种可能的实现方法中,所述第一终端在第七时刻启动第二定时器,所述第七时刻为所述第一定时器的停止时刻、或所述第一定时器的停止时刻之后的第一个符号。
在一种可能的实现方法中,所述第一终端在第八时刻停止所述第二定时器,所述第八时刻是根据第二时长得到的。
在另一种可能的实现方法中,当满足第二时长时,或者当超出第二时长时,所述第一终端停止所述第二定时器。
上述描述的第二时长是关联于资源选择窗的时长的一个时长值,或者是关联于资源选择/重选的时长的一个时长值,或者,所述第二时长通过信令被配置给第一终端。所述信令为网络设备的RRC信令,或者PC5的RRC信令。
在一种可能的实现方法中,所述反馈信息为侧行链路的测量报告、或侧行链路的CSI,所述第二定时器用于指示监听侧行链路的控制信息和/或侧行链路的数据信息的时间段。
在一种可能的实现方法中,所述反馈信息为HARQ信息,所述第二定时器用于指示监听侧行链路的重传数据的时间段。
基于上述方案,第一终端可以在第二定时器的启动时间内才开始监听侧行链路的控制信息和/或侧行链路的数据信息,或者监听侧行链路的重传数据。一方面可以保障第一终端可以在相应的时间段内能够监听到侧行链路的控制信息和/或侧行链路的数据信息,或者监听侧行链路的重传数据。另一方面由于设定了监听的时间段,从而可以避免盲目监听而导致耗电严重,也即可以达到节能目的。
在一种可能的实现方法中,第一终端确定在第一时间段内处于激活期,所述第一时间段为第三定时器指示的激活期与所述第一定时器的时长重叠的一个时间段。第三定时器是除第一定时器外的任意定时器。
也即,在所述第一定时器的时长内,是指示第一终端不处于激活期的,但第三定时器指示第一终端在第一定时器的第一时间段内处于激活期,则取两个定时器指示的激活期的并集作为第一终端的激活期。
在一种可能的实现方法中,第一终端确定在第二时间段内处于激活期,所述第二时间段为第二定时器的时长与第三定时器指示的激活期的并集。第三定时器是除第一定时器外的任意定时器。
也即,在所述第二定时器的时长内,是指示第一终端处于激活期的,且第三定时器指示第一终端在某个时间段内处于激活期,则取两个定时器指示的激活期的并集作为第一终端的激活期。
第二方面,本申请实施例提供一种通信方法,包括:第二终端向第一终端发送侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;所述第二终端在第一时刻启动第一定时器,所述第一时刻关联于SCI所占用或所指示的侧行链路的时域资源,所述第一 定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听反馈信息,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI、或侧行链路的混合自动重传请求HARQ信息。
基于上述方案,第二终端在向第一终端发送SCI之后,启动第一定时器,第一定时器用于指示在第一定时器启动后的至少一个时间单元不监听第一终端发送的反馈信息。也即,在第一定时器的启动时长内,第一终端不会向第二终端发送反馈信息,因此第二终端在这段时长内不必监听反馈信息,从而可以达到节能的目的。
在一种可能的实现方法中,所述第二终端在第二时刻停止所述第一定时器,所述第二时刻关联于所述第一终端发送的反馈信息所占用的时域资源。
在另一种可能的实现方法中,当满足第一时长时,或者当超出第一时长时,所述第二终端停止所述第一定时器。所述第一时长关联于反馈信息发送的时域位置,或者,所述第一时长通过信令被配置给第二终端。所述信令为网络设备的RRC信令,或者PC5的RRC信令。其中,超出第一时长,可以理解为从启动第一定时器开始或开始后,时间超出第一时长。
在一种可能的实现方法中,所述第一时刻为以下任一种:
所述SCI的起始符号;
所述SCI的起始符号的下一符号;
所述SCI的终止符号;
所述SCI的终止符号的下一符号;
所述SCI指示的第一个时域资源的起始符号;
所述SCI指示的第一个时域资源的起始符号的下一个符号;
所述SCI指示的第一个时域资源的终止符号;
所述SCI指示的第一个时域资源的终止符号的下一个符号;
所述SCI指示的第一个时域资源的终止符号加第一偏移量。
基于上述方案,第一时刻可以有多种不同的实现方案,实现较为灵活。
在一种可能的实现方法中,所述第一偏移量是由无线资源控制RRC信令配置的,所述RRC信令为PC5RRC信令或者来自网络设备的RRC信令。
在一种可能的实现方法中,所述第二时刻为以下任一种:
所述反馈信息的起始时刻;
所述反馈信息所占符号的上一个符号;
所述反馈信息所占符号减第二偏移量;
所述反馈信息所占时域资源的上一个时隙;
所述反馈信息所占时隙的上一个时隙。
基于上述方案,第二时刻可以有多种不同的实现方案,实现较为灵活。
在一种可能的实现方法中,所述第二偏移量是由RRC信令配置的,所述RRC信令为PC5RRC信令或者来自网络设备的RRC信令。
在一种可能的实现方法中,所述第二终端在第三时刻启动第二定时器,所述第三时刻为所述第一定时器的停止时刻、或所述第一定时器的停止时刻之后的第一个符号,所述第二定时器用于指示监听所述反馈信息的时间段。
基于上述方案,第二终端可以在第二定时器的启动时间内才开始监听反馈信息。一方 面可以保障第二终端可以在相应的时间段内能够监听到反馈信息。另一方面由于设定了监听的时间段,从而可以避免盲目监听而导致耗电严重,也即可以达到节能目的。
在一种可能的实现方法中,所述第二终端在第四时刻停止所述第二定时器,所述第四时刻为网络设备或所述第二终端预配置的一个值、或预定义的一个值。
作为另一种实现方法,当满足第二时长时,或者当超出第二时长时,所述第二终端停止所述第二定时器。
所述第二时长关联于反馈信息所占用的时长,或者,所述第二时长通过信令被配置给第二终端。所述信令为网络设备的RRC信令,或者PC5的RRC信令。其中,超出第二时长,可以理解为从启动第二定时器开始或开始后,时间超出第二时长。
在一种可能的实现方法中,第二终端确定在第一时间段内处于激活期,所述第一时间段为第三定时器指示的激活期与所述第一定时器的时长重叠的一个时间段。第三定时器是除第一定时器外的任意定时器。
也即,在所述第一定时器的时长内,是指示第二终端不处于激活期的,但第三定时器指示第二终端在第一定时器的第一时间段内处于激活期,则取两个定时器指示的激活期的并集作为第二终端的激活期。
在一种可能的实现方法中,第二终端确定在第二时间段内处于激活期,所述第二时间段为第二定时器的时长与第三定时器指示的激活期的并集。第三定时器是除第一定时器外的任意定时器。
也即,在所述第二定时器的时长内,是指示第二终端处于激活期的,且第三定时器指示第二终端在某个时间段内处于激活期,则取两个定时器指示的激活期的并集作为第二终端的激活期。
第三方面,本申请实施例提供一种通信方法,包括:第一终端接收来自第二终端的SCI,所述SCI用于指示侧行链路的时域资源;所述第一终端在第一时刻启动第一定时器,所述第一时刻关联于所述SCI所占用或所指示的侧行链路的时域资源,所述第二时刻关联于所述第一终端发送的反馈信息所占用的时域资源,所述反馈信息包括侧行链路的测量报告、侧行链路的CSI,或侧行链路的HARQ信息,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息;在信道拥塞率大于信道拥塞率阈值和/或所述SCI中的优先权值小于优先权阈值的情形下,所述第一终端在第三时刻或第四时刻停止所述第一定时器,所述第三时刻为下一个资源周期的起始时刻,所述第四时刻关联于所述SCI指示的侧行链路的时域资源。
基于上述方案,考虑到信道比较拥塞时,即使第一终端向第二终端发送了反馈信息NACK,考虑到第二终端可能因为信道比较拥塞,无法检测到用于重传数据的新资源,因此第二终端无法重新分配资源以重传数据。因而该情况下,可以使用下一个周期的资源用于重传数据。从而可以尽可能对第一终端节能。
在一种可能的实现方法中,所述第一终端在第五时刻启动第二定时器,所述第五时刻为所述第一定时器的停止时刻、或所述第一定时器的停止时刻之后的第一个符号。
在一种可能的实现方法中,所述第一终端在第六时刻停止所述第二定时器,所述第六时刻是根据第二时长得到的,所述第二时长是通过RRC信令配置的、或是关联于资源选择窗的时长的一个时长值、或是关联于资源选择/重选的时长的一个时长值。
第四方面,本申请实施例提供一种通信装置,该装置可以是第一终端,还可以是用于 第一终端的芯片。该装置具有实现上述第一方面、或第三方面、或第一方面的各可能的实现方法、或第三方面的各可能的实现方法的功能。该功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第五方面,本申请实施例提供一种通信装置,该装置可以是第二终端,还可以是用于第二终端的芯片。该装置具有实现上述第二方面、或第二方面的各可能的实现方法的功能。该功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
第六方面,本申请实施例提供一种通信装置,包括处理器和存储器;该存储器用于存储计算机执行指令,当该装置运行时,该处理器执行该存储器存储的该计算机执行指令,以使该装置执行如上述第一方面至第三方面的方法,第一方面至第三方面的各可能的实现方法中的任意方法。
第七方面,本申请实施例提供一种通信装置,包括用于执行上述第一方面至第三方面的方法,第一方面至第三方面的各可能的实现方法中的任意方法的各个步骤的单元或手段(means)。
第八方面,本申请实施例提供一种通信装置,包括处理器和接口电路,所述处理器用于通过接口电路与其它装置通信,并执行上述第一方面至第三方面的方法,第一方面至第三方面的各可能的实现方法中的任意方法。该处理器包括一个或多个。
第九方面,本申请实施例提供一种通信装置,包括处理器,用于与存储器相连,用于调用所述存储器中存储的程序,以执行上述第一方面至第三方面的方法,第一方面至第三方面的各可能的实现方法中的任意方法。该存储器可以位于该装置之内,也可以位于该装置之外。且该处理器包括一个或多个。
第十方面,本申请实施例还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指令,当其在计算机上运行时,使得处理器执行上述第一方面至第三方面的方法,第一方面至第三方面的各可能的实现方法中的任意方法。
第十一方面,本申请实施例还提供一种计算机程序产品,该计算机产品包括计算机程序,当计算机程序运行时,使得上述第一方面至第三方面的方法,第一方面至第三方面的各可能的实现方法中的任意方法被执行。
第十二方面,本申请实施例还提供一种芯片***,包括:处理器,用于执行上述第一方面至第三方面的方法,第一方面至第三方面的各可能的实现方法中的任意方法。
第十三方面,本申请实施例还提供一种通信***,包括:第一终端和第二终端;所述第二终端,用于向所述第一终端发送侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;所述第一终端,用于接收来自所述第二终端的所述SCI;在第一时刻或第二时刻启动第一定时器,所述第一时刻关联于所述SCI所占用或所指示的侧行链路的时域资源,所述第二时刻关联于所述第一终端发送的反馈信息所占用的时域资源,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI,或侧行链路的混合自动重传请求HARQ信息,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息。
第十四方面,本申请实施例还提供一种通信方法,包括:第二终端向第一终端发送侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;第一终端接收来自第二终端的所述SCI;第一终端在第一时刻或第二时刻启动第一定时器,所述第一时刻关联于所 述SCI所占用或所指示的侧行链路的时域资源,所述第二时刻关联于所述第一终端发送的反馈信息所占用的时域资源,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI,或侧行链路的混合自动重传请求HARQ信息,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息。
第十五方面,本申请实施例还提供一种通信***,包括:第一终端和第二终端;所述第一终端,用于接收来自所述第二终端的侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;所述第二终端,用于向所述第一终端发送所述SCI;在第一时刻启动第一定时器,所述第一时刻关联于SCI所占用或所指示的侧行链路的时域资源,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听反馈信息,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI、或侧行链路的混合自动重传请求HARQ信息。
第十六方面,本申请实施例还提供一种通信方法,包括:第一终端接收来自所述第二终端的侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;第二终端向所述第一终端发送所述SCI;第二终端在第一时刻启动第一定时器,所述第一时刻关联于SCI所占用或所指示的侧行链路的时域资源,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听反馈信息,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI、或侧行链路的混合自动重传请求HARQ信息。
图1为本申请实施例所适用的一种网络架构示意图;
图2为DRX周期示意图;
图3为预留的侧行链路资源示意图;
图4为反馈信息的一个示例;
图5为本申请实施例提供一种通信方法示意图;
图6为资源检测与选择示意图;
图7为定时器的使用示例一;
图8为定时器的使用示例二;
图9为定时器的使用示例三;
图10为定时器的使用示例四;
图11为本申请实施例提供又一种通信方法示意图;
图12为本申请实施例提供的一种通信装置示意图;
图13为本申请实施例提供的一种终端示意图。
如图1所示,为本申请实施例所适用的一种网络架构示意图,包括至少两个终端和至少一个网络设备。可选的,终端可以通过无线接口与网络设备通信。
终端(terminal),是一种具有无线收发功能的设备,可以部署在陆地上,包括室内或室外、手持或车载;也可以部署在水面上(如轮船等);还可以部署在空中(例如飞机、气 球和卫星上等)。所述终端可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality,VR)终端、增强现实(augmented reality,AR)终端、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、用户设备(user equipment,UE)等。本申请实施例中的终端与终端之间支持直连通信,终端与终端之间的直连通信也可以称为D2D通信。
网络设备,是一种为终端提供无线通信功能的设备,网络设备包括但不限于:第五代(5th generation,5G)中的下一代基站(g nodeB,gNB)、演进型节点B(evolved node B,eNB)、无线网络控制器(radio network controller,RNC)、节点B(node B,NB)、基站控制器(base station controller,BSC)、基站收发台(base transceiver station,BTS)、家庭基站(例如,home evolved nodeB,或home node B,HNB)、基带单元(baseBand unit,BBU)、传输点(transmitting and receiving point,TRP)、发射点(transmitting point,TP)、移动交换中心等。
5G独立部署时,网络设备的逻辑体系可以采用集中单元(centralized unit,CU)和分布单元(distributed unit,DU)分离模式。基于协议栈功能的配置,CU-DU逻辑体系可以分为两种,即CU-DU分离架构和CU-DU融合架构。针对CU-DU分离架构,协议栈的功能可以动态配置和分割,其中一些功能在CU中实现,剩余功能在DU中实现。为满足不同分割选项的需求,需要支持理想传输网络和非理想传输网络。CU与DU之间的接口应当遵循第三代合作伙伴计划(3rd generation partnership project,3GPP)规范要求。针对CU-DU融合架构,CU和DU的逻辑功能整合在同一个网络设备中,以实现协议栈的全部功能。
为便于理解本申请实施例,下面先对本申请实施例中涉及的专业术语进行解释说明。需要说明的是,以下的专业术语并不构成对本申请实施例的现有技术,在对这些专业术语的描述中,也包含本申请实施例的发明内容。
一、非连续接收(Discontinuous Reception,DRX)机制
在终端与网络设备之间的Uu口通信中,为了让终端省电,引入了DRX机制。DRX机制是为处于无线资源控制(radio resource control,RRC)连接态的终端配置一个DRX周期。DRX周期由“On Duration(唤醒期或唤醒时间或激活期或持续时间)”和“Opportunity for DRX(休眠期或休眠时间)”组成,在“On Duration”的时间内,终端监听并接收物理下行控制信道(Physical Downlink Control Channel,PDCCH);在“Opportunity for DRX”时间内,终端不接收PDCCH的数据以节省功耗。所述DRX周期中的唤醒期可以通过信令通知onDurationTimer来进行配置。
参考图2,为DRX周期示意图,从图中可看出,在时域上,时间被划分成一个个连续的DRX Cycle(周期)。drxStartOffset指定DRX cycle的起始子帧,long DRX Cycle指定了一个long DRX cycle占多少个子帧,这两个参数都是由longDRX-CycleStartOffset字段指定。定时器onDurationTimer指定了从DRX cycle的起始子帧算起,需要监听PDCCH的连续子帧数(即激活期持续的子帧数)。
在一般情况下,当终端在某个子帧被调度并接收或发送数据后,很可能在接下来的几 个子帧内继续被调度,如果要等到下一个DRX cycle再来接收或发送这些数据,则将会带来额外的延迟。因此,为了降低这类延迟,终端在被调度后,会持续位于激活期,即会在配置的激活期内持续监听PDCCH。其实现机制是:每当终端被调度以初传数据时,就会启动(或重启、或使能)一个DRX非激活定时器(drxInactivityTimer),终端将一直位于激活态直到该定时器超时。drxInactivityTimer指定了当终端成功解码一个指示初传的上行(uplink,UL)或下行(downlink,DL)用户数据的PDCCH后,持续位于激活态的连续子帧数。即每当终端有初传数据被调度,该定时器就启动或重启一次。需要说明的是,这里是初传而不是重传。初传,指的是某一个传输块(Transport Block,TB)的第一次传输;重传,指的是同一个传输块在第一次传输之后的重新传输。所述重新传输可以是多次。
本发明中,DRX周期中的on duration属于激活期,drxInactivityTimer开启后的定时器工作期间也属于激活期。
DXR cycle的选择包含了电池节约和延迟之间的平衡。从一个方面讲,长DRX周期有益于延长终端的电池使用时间;例如网页浏览,当用户在阅读已经下载好的网页时,如果此时终端持续接收下行数据则是浪费资源。从另一个方面讲,当有新的数据传输时,一个更短的DRX周期有利于更快的响应;例如终端请求另一个网页或者基于互联网协议的语音(voice over internet protocol,VoIP)。
为了满足上述需求,每个终端可以配置两个DRX cycle:短DRX周期(short DRX Cycle)和长DRX周期(long DRX Cycle)。
二、侧行链路(sidelink)资源
本申请实施例中侧行链路资源也可以简称为资源,或者传输资源。本申请中,侧行链路也可以称之为边链路,或者旁链路,或者PC5接口链路,或者终端间链路。
在D2D通信中,侧行链路资源是用于终端和终端之间的通信的资源。侧行链路资源可以包括频域的侧行链路资源和时域的侧行链路资源。本申请主要讨论的是关于频域的侧行链路资源和时域的侧行链路资源中的时域的侧行链路资源,后续出现的侧行链路资源可以均指时域的侧行链路资源,这里做统一说明。
从传输类型角度,侧行链路资源可以包括侧行链路发送资源和侧行链路接收资源。其中,侧行链路发送资源用于发送信息,如发送侧行链路的控制信息和/或侧行链路额的数据信息。侧行链路接收资源用于接收信息,如接收侧行链路的控制信息和/或侧行链路的数据信息。
目前,侧行链路资源的选择方法有两种,第一种是由网络设备为侧行链路分配资源,第二种是由发送端的终端从空闲资源中选择预留的侧行链路资源,并向接收端的终端发送侧行链路控制信息(sidelink control information,SCI),该SCI中携带用于指示预留的侧行链路资源的信息。其中,每发送一次SCI,可以预留最多N个资源(N为正整数),并且同一个SCI中预留的资源是用于传输同一个数据包或同一个传输块;或者,同一个SCI中预留的资源也可以是第一个资源到第X个资源用于传输一个数据包或一个传输块,第X+1个资源到第N个资源用于传输另一个数据包或另一个传输块,其中X为大于等于1且小于等于N的正整数;当然,第X+1个资源到第N个资源也可以用于传输另外多个数据包或另外多个传输块,以此类推,不再一一枚举。可选的,N为3或者为大于3的任何一个整数。可选的,这是对于非周期的预留的资源。可选的,SCI中还可以携带周期值,则一个 SCI中预留的N个资源可以以该周期值进行重复预留。
需要说明的是,不同周期内预留的资源用于传输不同的传输块。例如,第一个周期内的N个资源用于传输传输块1,第二个周期内的N个资源用于传输传输块2,第三个周期内的N个资源用于传输传输块3,以此类推。
如图3所示,为预留的侧行链路资源示意图。在每个周期内存在三块预留的侧行链路资源,在第一个周期内预留的侧行链路资源用于传输传输块1(TB1),在第二个周期内预留的侧行链路资源用于传输传输块2(TB2)。需要说明的是,每个周期内预留的所有侧行链路资源要求限定在一个时间窗内,也即预留的侧行链路资源不能超出时间窗。
本申请实施例中,传输块(transmission block)也可以称之为数据包(data packet)。
本申请实施例中,接收侧的终端可以向发送侧的终端发送反馈信息,该反馈信息可以是侧行链路的测量报告、侧行链路的信道状态信息(Channel State Information,CSI),或侧行链路的混合自动重传请求(Hybrid automatic repeat request,HARQ)信息。其中,所述侧行链路的测量报告可以是侧行链路的参考信号接收功率(reference signal received/receiving power,RSRP),侧行链路的参考信号接收质量(reference signal received/receiving quality,RSRQ),侧行链路的接收信号强度指示(received signal strength indicator/indication,RSSI)或者侧行链路的无线链路监测(radio link monitoring,RLM)信息等。
本申请实施例中,反馈信息所占用的时域资源和/或频域资源的位置,可以是发送侧的终端配置给接收侧的终端的,也可以是网络设备配置给接收侧的终端的。当由网络设备为接收侧的终端配置反馈信息所占用的时域资源和/或频域资源的位置,则网络设备还将配置的反馈信息所占用的时域资源和/或频域资源的位置告知发送侧的终端。当然,反馈信息所占用的时域资源和/或频域资源的位置还可以是接收侧的终端自身通过资源检测所获得的,或者基于网络设备所配置的反馈信息所占用的时域资源和/或频域资源的位置并通过资源检测所获得的。
本申请实施例中,发送的针对传输块1的反馈信息所在的时域资源的位置为传输块1所在的资源或者传输块1之后可以进行反馈的时刻。可选的,当反馈信息为HARQ时,之后可以进行反馈的时刻为传输块1所在的资源或者传输块1之后大于最小HARQ处理时间(例如大于MinTimeGapPSFCH)的所配置的反馈信息所在的时域资源的位置。可选的,当反馈信息为CSI时,之后可以进行反馈的时刻为传输块1所在的资源或者传输块1之后大于最小CSI生成时间(例如大于MinTimeGapCSI)的所配置的反馈信息所在的时域资源的位置。
本申请实施例中,当接收侧的终端向发送侧的终端发送的反馈信息是侧行链路的测量报告、或侧行链路的CSI,则发送侧的终端在接收到反馈信息后,根据该反馈信息获取到信道质量、信道状态等信息,从而可以基于反馈信息向接收侧的终端发送侧行链路的控制信息和/或侧行链路的数据信息。
本申请实施例中,当接收侧的终端向发送侧的终端发送的反馈信息是HARQ信息,则发送侧的终端在接收到反馈信息后,若该反馈信息反馈的确认应答(ACK),表示发送侧的终端在上一个预留的侧行链路资源上发送的数据被接收侧的终端正确接收并解析,从而发送侧的终端可以在下一个预留的侧行链路资源上继续发送下一个数据。若该反馈信息反 馈的否认应答(NACK),表示发送侧的终端在上一个或之前预留的侧行链路资源上发送的数据没有被接收侧的终端正确接收或解析,从而发送侧的终端可以在下一个预留的侧行链路资源上或发送侧的终端重新分配的侧行链路资源上重传该数据。可选的,所述重新分配可以理解为选择,或者重新选择,或者检测并选择,或者检测并重新选择中的任意一项。
参考图4,为本申请实施例中的反馈信息的一个示例。发送侧的终端为接收侧的终端预留了两个侧行链路的资源,分别称为资源1和资源2。其中,资源1用于传输“传输块1(TB1)”,资源2用于传输“传输块2(TB2)”。图中反馈信息所占用的时频资源位置是网络设备或发送侧的终端预先配置的。
在一个示例中,若图4中的反馈信息是侧行链路的测量报告、或侧行链路的CSI,则发送侧的终端基于该反馈信息,在资源2上向接收侧的终端发送侧行链路的控制信息和/或侧行链路的数据信息。本发明中,对应传输块j的资源,也可以称之为,传输块j所在的资源,或者,用于传输传输块j的资源,j=1,2,……。
在又一个示例中,发送侧的终端在资源1上向发送侧的终端发送数据1,图4中的反馈信息是接收侧的终端向发送侧的终端发送的针对传输块1的HARQ信息。当HARQ信息是ACK,则发送侧的终端接收到ACK之后,继续在资源2上向接收侧的终端发送下一个数据,比如是数据2。可选的,发送侧的终端接收到ACK之后,也可以释放资源2。当HARQ信息是NACK,则发送侧的终端接收到NACK之后,获知接收侧的终端没有正确接收或解析数据1,则继续在资源2上向接收侧的终端重传数据1。
基于上述反馈机制,发送侧的终端在预留的侧行链路资源上向接收侧的终端发送完侧行链路的控制信息和/或数据信息之后,需要保持监听接收侧的终端发送的反馈信息。如果发送侧的终端在发送完侧行链路的控制信息和/或数据信息之后,立即开始监听反馈信息直到监听到反馈信息,则导致发送侧的终端始终处于激活期,导致发送侧的终端耗电比较严重,不满足目前对于终端的节能要求。
基于上述反馈机制,接收侧的终端在向发送侧的终端发送完反馈信息之后,需要保持监听发送侧的终端将要发送的侧行链路的控制信息和/或侧行链路的数据信息(可以是初传数据或重传数据)。如果接收侧的终端在发送完反馈信息之后,立即开始监听侧行链路的控制信息和/或侧行链路的数据信息直到监听到侧行链路的控制信息和/或侧行链路的数据信息,则导致接收侧的终端始终处于激活期,导致接收侧的终端耗电比较严重,不满足目前对于终端的节能要求。
由此可见,基于上述反馈机制,对于发送侧的终端和接收侧的终端都存在节能的问题需要解决。本申请实施将至少解决上述问题。
为便于阅读本申请方案,下面先对本申请实施例后续将出现的一些概念加以澄清。
本申请实施例中,预留的侧行链路资源也可以称之为侧行链路资源,或者分配的侧行链路资源。第一资源集合中包含的N个资源为预留的用于同一个传输块或不同的传输块的传输资源。第二资源集合中包含的周期性的所述第一资源集合为预留的用于不同的传输块的传输资源。
本申请实施例中,可以理解为SCI位于一个预留的侧行链路资源的前m个符号。可选的,当SCI为两级SCI时,可以理解为第一级SCI位于一个预留的侧行链路资源的前m个符号;或者,第一级SCI和第二级SCI位于一个预留的侧行链路资源的前m个符号。其中, m为正整数。
本申请实施例中,一个终端既具备发送功能,也具备接收功能。当一个终端作为发送端,则该终端也称为发送侧的终端、或第二终端。当一个终端作为接收端,则该终端也称为接收侧的终端、或第一终端。比如,终端1与终端2之间进行D2D通信。当终端1是发送端,终端2是接收端,则终端1也称为发送侧的终端、或第二终端,终端2也称为接收侧的终端、或第一终端。当终端2是发送端,终端1是接收端,则终端2也称为发送侧的终端、或第二终端,终端1也称为接收侧的终端、或第一终端。
本申请实施例中,当一个定时器在某个时刻启动,相应地,则有一个对应的可替代方案,即:该定时器在该时刻之后启动,也即在该时刻之后的紧接着的一个时刻启动。比如,当第一定时器在第一时刻启动,则相应地,第一定时器也可以在第一时刻之后启动。再比如,当第一定时器在第二时刻启动,则相应地,第一定时器也可以在第二时刻之后启动。
本申请实施例中,当一个定时器在某个时刻停止,相应地,则有一个对应的可替代方案,即:该定时器在该时刻之前停止,也即在该时刻之前的紧接着的一个时刻停止。比如,当第二定时器在第三时刻启动,则相应地,第二定时器也可以在第三时刻之前启动。再比如,当第二定时器在第四时刻启动,则相应地,第二定时器也可以在第四时刻之前启动。
为解决上述接收侧的终端(即第一终端)的耗电问题,本申请提供以下实施例1。为解决上述发送侧的终端(即第二终端)的耗电问题,本申请提供以下实施例2。
需要说明的是,以下实施例1与实施例2之间是解耦的,即二者之间的实施没有相互依赖关系,均为独立的方案。在具体实现中,二者可以相结合作为一个整体的方案,即实施例1作为接收侧的终端的实施方案,实施例2作为发送侧的终端的实施方案。或者,实施例1作为接收侧的终端的实施方案,而发送侧的终端的实施方案采用与实施例2不同的方案。或者是实施例2作为发送侧的终端的实施方案,而接收侧的终端的实施方案可以采用与实施例1不同的方案。
需要说明的是,以下实施例1中的接收侧的终端中的第一定时器、第二定时器,与以下实施例2中的发送侧的终端中的第一定时器、第二定时器仅仅是名称上相同,它们是实质是不同的定时器。也即实施例1中的接收侧的终端中的第一定时器与实施例2中的发送侧的终端中的第一定时器是不同的定时器,实施例1中的接收侧的终端中的第二定时器与实施例2中的发送侧的终端中的第二定时器是不同的定时器。
同样的,以下实施例1中的接收侧的终端中的第一时刻、第二时刻、第三时刻、第四时刻,也与以下实施例2中的发送侧的中的第一时刻、第二时刻、第三时刻、第四时刻仅仅是命名上的相同,实质分别是不同的时刻。
本申请中,启动也可以称之为重启。当反馈信息是HARQ信息时,则启动下述定时器中的任何一个定时器可以是启动相应于某个HARQ进程的定时器,或者为某个HARQ进程启动定时器。同样,停止下述定时器中的任何一个定时器可以是停止相应于该HARQ进程的定时器,或者为某个HARQ进程停止定时器。可选的,可以是启动相应于SCI中所含进程号的定时器。进程也可以称之为进程号(process number)。HARQ进程也可以称之为HARQ进程号(process number)。
本申请中,在某个时刻停止任何一个定时器,也可以理解为,当该定时器超出对应的时长时停止该定时器。本申请中,不监听侧行链路的控制信息和/或侧行链路的数据信息, 可以理解为不需要/不必要监听侧行链路的控制信息和/或侧行链路的数据信息。
实施例1
该实施例用于节约接收侧的终端(即第一终端)的耗电。该实施例中,第一终端在向第二终端发送反馈信息之后,启动第一定时器,第一定时器用于指示在第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息。也即,在第一定时器的启动时长内,第二终端不会向第一终端发送侧行链路的控制信息和/或侧行链路的数据信息,因此第一终端在这段时长内不必监听侧行链路的控制信息和/或侧行链路的数据信息,从而可以达到节能的目的。也可以理解为,第一定时器用于指示第一终端在收到期望的侧行链路重传数据之前需要等待的时长,这里的时长可以以时隙、符号或子帧为单位进行计算。以反馈信息是HARQ信息为例,则在第一定时器的启动时长内,第二终端不会向第一终端发送第一HARQ进程(HARQ process)的侧行链路的控制信息和/或侧行链路的数据信息,因此第一终端在这段时长内不必监听所述第一HARQ进程对应的侧行链路的控制信息和/或侧行链路的数据信息,从而可以达到节能的目的。其中,所述反馈信息也是针对第一HARQ进程的侧行链路的控制信息和/或侧行链路的数据信息的反馈信息。即侧行链路的控制信息中包含的HARQ进程为第一HARQ进程。
后续,在第一定时器停止之后,第一终端启动第二定时器。比如,可以是在第一定时器停止时刻启动第二定时器,或者是在第一定时器停止时刻之后的某个时刻,启动第二定时器。当第一终端发送的反馈信息是侧行链路的测量报告或侧行链路的CSI,则第二定时器用于指示监听侧行链路的控制信息和/或侧行链路的数据信息的时间段(包括初传数据和/或重传数据)。当第一终端发送的反馈信息是HARQ信息,则第二定时器用于指示监听侧行链路的重传数据的时间段。也即,在第二定时器启动后的时长内,第一终端才开始监听侧行链路的控制信息和/或侧行链路的数据信息(包括初传数据和/或重传数据,或者只包括重传数据)。可选的,第二定时器用于指示监听侧行链路的重传数据的时间段,可以理解为第二定时器用于指示监听侧行链路的所述第一HARQ进程对应的重传数据的时间段。即,在第二定时器启动后,第一终端期望监听到所述第一HARQ进程对应的侧行链路的控制信息和/或侧行链路的数据信息。
如图5所示,为本申请实施例提供的一种通信方法,该方法包括以下步骤:
步骤501,第二终端向第一终端发送SCI。
相应地,第一终端接收该SCI。
可选的,当正确检测时,第一终端可以接收到该SCI。
该SCI用于指示侧行链路的时域资源,该侧行链路的时域资源用于第二终端向第一终端发送侧行链路的控制信息和/或侧行链路的数据信息。或者理解为,第二终端将在SCI所指示的侧行链路的时域资源上,向第一终端发送侧行链路的控制信息和/或侧行链路的数据信息。
需要说明的是,该SCI不仅可以用于指示侧行链路的时域资源,还可以指示侧行链路的频域资源。SCI指示的时域资源和/或频域资源可以是预留的或者调度的,或者是部分预留部分调度。
该步骤501之后,第二终端为第一终端配置了一个或多个侧行链路的时域资源,并可以在这些时域资源上向第一终端发送侧行链路的控制信息和/或侧行链路的数据信息。
以及,在步骤501之后,第一终端可以向第二终端发送反馈信息,该反馈信息可以是侧行链路的测量报告、侧行链路的CSI,或侧行链路的HARQ信息等。其中,侧行链路的CSI包括信道质量指示(Channel Quality Indication,CQI)、预编码矩阵指示(Precoding Matrix Indication,PMI)、秩指示(Rank Indication,RI)等中的一个或多个。例如,侧行链路的CSI只为CQI。
步骤502,第一终端启动第一定时器。
可选的,第一终端是在发送反馈信息之后的某个时刻启动第一定时器,第一定时器用于指示在第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息,从而可以达到节能的目的。
作为一种实现方法,第一终端可以在第一时刻或第一时刻之后启动第一定时器。第一时刻关联于上述步骤501中的SCI所占用或所指示的侧行链路的时域资源。其中,“关联于”指的是与SCI所占用或所指示的侧行链路的时域资源有关。SCI所占用的侧行链路的时域资源指的是SCI所占用的一个或多个符号。
具体的,第一时刻可以是以下任一种:
1),SCI的起始符号;
2),SCI的起始符号的下一符号;
3),SCI的终止符号;
4),SCI的终止符号的下一符号;
5),SCI指示的第一个时域资源的起始符号;
6),SCI指示的第一个时域资源的起始符号的下一个符号;
7),SCI指示的第一个时域资源的终止符号;
8),SCI指示的第一个时域资源的终止符号的下一个符号;
9),SCI指示的第一个时域资源的起始符号/终止符号加第一偏移量;
10),SCI的起始符号/终止符号加第一偏移量。
可选的,该第一偏移量是由RRC信令配置的,该RRC信令为PC5RRC信令或者来自网络设备的RRC信令。可选的,该第一偏移量也可以是预定义的。例如该第一偏移量可以为反馈信息处理时延。
作为另一种实现方法,第一终端可以在第二时刻或第二时刻之后启动第一定时器。第二时刻关联于第一终端发送的反馈信息所占用的时域资源。其中,“关联于”指的是与第一终端发送的反馈信息所占用的时域资源有关。
其中,第二时刻可以是以下任一种:
1),反馈信息的终止时刻。
2),反馈信息所占符号的下一个符号。
3),反馈信息所占符号加第二偏移量;
4)反馈信息所占时域资源的下一个时隙;
其中,反馈信息所占时域资源,可以理解为反馈信息所占时隙或者反馈信息所占符号所位于的时隙。
5)反馈信息所占时隙的下一个时隙。
可选的,该第二偏移量是由RRC信令配置的,该RRC信令为PC5RRC信令或者来 自网络设备的RRC信令。可选的,该第二偏移量也可以是预定义的。
步骤503,第一终端停止第一定时器。
该步骤为可选。
作为一种实现方法,第一终端可以在第三时刻或第三时刻之前停止第一定时器。第三时刻是根据第一时长得到的,该第一时长关联于第二终端获取用于侧行链路传输的时域资源的时延。这里第三时刻之前停止第一定时器是为了保证不错过或尽量不错过接收接下来的控制信息/数据信息,或者说及时/及早接收接下来的控制信息/数据信息。
其中,这里的“获取”可以是检测、或者是选择、或者是重选、或者是检测和选择、或者是检测和重选。
可选的,第一终端可以在第三时刻之后停止第一定时器。这里第三时刻之后停止第一定时器是理解第一定时器是最小限制,只要在该第一定时器之后就可以保证不错过接收接下来的控制信息/数据信息,或者说只要在该第一定时器之后就可以及时/及早接收接下来的控制信息/数据信息。
作为另一种实现方法,当满足第一时长时,或者当超出第一时长时,所述第一终端停止所述第一定时器。
所述第一时长关联于所述第二终端获取用于侧行链路传输的时域资源的时延,或者,关联于所述SCI指示的侧行链路的时域资源,或者,所述第一时长通过信令被配置给第一终端。其中,超出第一时长,可以理解为从启动第一定时器开始或开始后,时间超出第一时长。
其中,用于侧行链路传输的时域资源包括用于侧行链路传输的初传的时域资源,和/或用于侧行链路传输的重传的时域资源中至少一项。
可选的,第一时长为以下任一种:
T1、T2、T1+T3、T4、T1+T4、T2+T4、T1+T3+T4、T5、T5+T4、T5+T1、或T5+T1+T4。
可选的,第一时长为下述几个能力参数或测量参数中的至少一个或多个的组合值:T1、T2、T3、T4或T5。其中,组合值即T1、T2、T3、T4或T5中任意几个值的和。其中,T1为第二终端完成资源检测和选择过程所需要的时长,T2为第二终端识别候选资源和选择用于侧行链路传输的资源所需要的时长,T3为第二终端对于反馈信息的处理时延,T4为第二终端的资源选择窗相对于资源检测窗的延时或者说资源选择窗的起始时刻相对于资源检测窗的终结时刻的时延/滞后时间/时长,T5为第二终端完成SCI解码/解析的时长或者第二终端完成SCI解码/解析并且进行RSRP/RSSI测量的时长。可选的,第二终端识别候选资源和选择用于侧行链路传输的资源所需要的时长可以为第二终端识别候选资源和选择用于潜在的侧行链路传输的资源集合所需要的时长。可选的,RSRP测量为在资源检测过程中对于DMRS的RSRP测量。可选的,RSSI测量为在资源检测过程中对于侧行链路能量的测量。
如图6所示,为资源检测与选择示意图。作为一个示例,上述T1可以是图6中的T3,上述T2可以是图6中的T
proc,1,上述T4可以是图6中的T1,上述T5可以是图6中的T
proc,0。
本申请中,第一时长或第二时长等任意一个时长值都可以通过信令被配置给终端。本 申请中所提到的信令配置包含RRC信令,MAC信令或物理层信令中任意一个或多个的组合。可选的,可以是通过网络设备的RRC信令,或者PC5的RRC信令。可选的,可以是通过网络设备的RRC信令配置一个列表(list或entry list),通过SCI指示entry index。可选的,可以是通过PC5的RRC信令配置一个entry list,通过SCI指示索引(index或entry index)。
本申请中,考虑到不同的终端有各自对应的上述能力参数或测量参数,因此第一时长会根据终端的最高能力值或最低能力值进行相应的设定,以保证在不同的终端处都适用。可选的,第一时长会根据缺省的最高能力值或最低能力值进行相应的设定,以保证在不同的终端处都适用。即,确保不会过于低估任意一个时长值,也不会过于高估任意一个时长值。所述设定可以是由网络设备设定,或者由发送终端设定并通知给接收终端。
作为另一种实现方法,第一终端也可以在第四时刻或第四时刻之前停止第一定时器。第四时刻关联于上述步骤501的SCI所指示的侧行链路的时域资源。其中,“关联于”指的是与SCI所占用或所指示的侧行链路的时域资源有关。SCI所占用的侧行链路的时域资源指的是SCI所占用的一个或多个符号。这里第四时刻之前停止第一定时器是为了保证不错过或尽量不错过接收接下来的控制信息/数据信息,或者说及时/及早接收接下来的控制信息/数据信息。
可选的,第四时刻所关联的SCI所指示的侧行链路的时域资源与第一时刻所关联的SCI所指示的侧行链路的时域资源不同。
可选的,第一终端可以在第四时刻之后停止第一定时器。这里第四时刻之后停止第一定时器是理解第一定时器是最小限制,只要在该第一定时器之后就可以保证不错过接收接下来的控制信息/数据信息,或者说只要在该第一定时器之后就可以及时/及早接收接下来的控制信息/数据信息。
下面给出两种不同场景下的第四时刻的实现方式。
场景一,上述步骤501的SCI指示的侧行链路的时域资源包括第一资源集合,第一资源集合包括N个侧行链路的时域资源,N为正整数。
在该场景下,第四时刻可以是以下任一种:
1),第五时刻。
2),第五时刻加第三偏移量。
3),第一时刻与第一差值对应的时长的和,第一差值指的是第一时刻(即第一定时器的启动时刻)与第五时刻的差值。
其中,第一差值对应的时长指的是第一差值对应的时隙所占用的时长或者第一差值对应的时隙向上或向下取整所占用的时长。例如,第一差值对应3个时隙,则第一差值为3个时隙所占用的时长。又例如,第一差值对应3.5时隙,则第一差值为4个时隙所占用的时长或3个时隙所占用的时长。
可选的,第一时刻与第一差值对应的时长的和,也可以为第一时刻与第一差值对应的时长的和向上或向下取整所得的值。
4),第二时刻与第二差值对应的时长的和,第二差值指的是第二时刻(即第一定时器的启动时刻)与第五时刻的差值。
其中,第二差值对应的时长指的是第二差值对应的时隙所占用的时长或者第二差值对应的时隙向上或向下取整所占用的时长。例如,第二差值对应4个时隙,则第二差值为4个时隙所占用的时长。又例如,第二差值对应4.3时隙,则第二差值为5个时隙所占用的时长或4个时隙所占用的时长。
可选的,第二时刻与第二差值对应的时长的和,也可以为第二时刻与第二差值对应的时长的和向上或向下取整所得的值。
本申请中,向上取整是考虑时长限制较严格,因此达到更加节能的效果;向下取整是考虑时长限制较保守,因此达到不错过/及时/及早接收接下来的控制信息/数据信息的效果。
本申请所有示例中,时长以时隙作为举例,可以不限于时隙,例如,可以为子帧,符号,或迷你时隙等。
可选的,上述第一差值和/或第二差值为绝对值,即两者相减的绝对值。
可选的,上述第三偏移量为正数值。
可选的,第三偏移量也可以为负数值,此时第五时刻加第三偏移量也可以理解为第五时刻减一个正数的第三偏移量。
以上1)至4)中的第五时刻可以是以下任一种:
1),SCI指示的第一资源集合中的第x个时域资源的起始符号。
其中,x为小于或等于N、且大于1的整数。
2),SCI指示的第一资源集合中的第x个时域资源的起始符号的下一符号;
其中,x为小于或等于N、且大于1的整数。
3),SCI指示的第一资源集合中的第x个时域资源的终止符号;
其中,x为小于或等于N、且大于1的整数。
4),SCI指示的第一资源集合中的第x个时域资源的终止符号的下一符号;
其中,x为小于或等于N、且大于1的整数。
场景二,上述步骤501的SCI指示的侧行链路的时域资源包括第二资源集合,第二资源集合包括周期性的第一资源集合,第一资源集合包括N个侧行链路的时域资源,N为正整数。
在该场景下,第四时刻可以是以下任一种:
1),第六时刻。
2),第六时刻加第四偏移量。
3),第一时刻与第三差值对应的时长的和。
其中,第三差值指的是第一时刻(即第一定时器的启动时刻)与第六时刻的差值。
第三差值对应的时长指的是第三差值对应的时隙所占用的时长或者第三差值对应的时隙向上或向下取整所占用的时长。例如,第三差值对应3个时隙,则第三差值为3个时隙所占用的时长。又例如,第三差值对应3.5时隙,则第三差值为4个时隙所占用的时长或3个时隙所占用的时长。
可选的,第一时刻与第三差值对应的时长的和,也可以为第一时刻与第三差值对应的时长的和向上或向下取整所得的值。
4),第二时刻与第四差值对应的时长的和,第四差值指的是第二时刻(即第一定时器的启动时刻)与第六时刻的差值。
其中,第四差值对应的时长指的是第四差值对应的时隙所占用的时长或者第四差值对应的时隙向上或向下取整所占用的时长。例如,第四差值对应4个时隙,则第四差值为4个时隙所占用的时长。又例如,第四差值对应4.3时隙,则第四差值为5个时隙所占用的时长或4个时隙所占用的时长。
可选的,第二时刻与第四差值对应的时长的和,也可以为第二时刻与第四差值对应的时长的和向上或向下取整所得的值。
本申请中,向上取整是考虑时长限制较严格,因此达到更加节能的效果;向下取整是考虑时长限制较保守,因此达到不错过/及时/及早接收接下来的控制信息/数据信息的效果。
可选的,上述第三差值和/或第三差值为绝对值,即两者相减的绝对值。
可选的,上述第四偏移量为正数值。
可选的,第四偏移量也可以为负数值,此时第六时刻加第四偏移量也可以理解为第六时刻减一个正数的第四偏移量。
其中,上述1)至4)中的第六时刻为以下任一种:
1),SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号。
其中,y为正整数,z为小于或等于N的正整数。
2),SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号的下一符号。
其中,y为正整数,z为小于或等于N的正整数。
3),SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号。
其中,y为正整数,z为小于或等于N的正整数。
4),SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号的下一符号。
其中,y为正整数,z为小于或等于N的正整数。
以上给出了在上述步骤501的SCI是一级SCI的情形下的第一时刻、第二时刻、第三时刻及第四时刻的不同实现方法。
下面给出在上述步骤501的SCI是二级SCI(包括第一级SCI和第二级SCI)的情形下的第一时刻、第二时刻、第三时刻及第四时刻的不同实现方法。
在上述步骤501的SCI是二级SCI(包括第一级SCI和第二级SCI)的情形下,第一定时器若是在第一时刻启动第一定时器,则第一时刻可以是以下任一种:
1),第一级SCI的起始符号或第二级SCI的起始符号。
2),第一级SCI的起始符号的下一符号或第二级SCI的起始符号的下一符号。
3),第一级SCI的终止符号或第二级SCI的终止符号。
4),第一级SCI的终止符号的下一符号或第二级SCI的终止符号的下一个符号。
5),第一级SCI指示的第一个时域资源的起始符号。
6),第一级SCI指示的第一个时域资源的起始符号的下一个符号。
7),第一级SCI指示的第一个时域资源的终止符号。
8),第一级SCI指示的第一个时域资源的终止符号的下一个符号。
9),第一级SCI指示的第一个时域资源的起始符号/终止符号加第一偏移量;
10),第一级SCI的起始符号/终止符号加第一偏移量。
在上述步骤501的SCI是二级SCI(包括第一级SCI和第二级SCI)的情形下,若第一级SCI指示了第一资源集合,第一资源集合包括N个侧行链路的时域资源,N为正整数,且第一定时器是在第四时刻停止第一定时器,则第四时刻可以是以下任一种:
1),第一资源集合中的第x个时域资源的起始符号。
其中,x为小于或等于N、且大于1的整数。
2),第一资源集合中的第x个时域资源的起始符号的下一符号。
其中,x为小于或等于N、且大于1的整数。
3),第一资源集合中的第x个时域资源的终止符号。
其中,x为小于或等于N、且大于1的整数。
4),第一资源集合中的第x个时域资源的终止符号的下一符号。
其中,x为小于或等于N、且大于1的整数。
在上述步骤501的SCI是二级SCI(包括第一级SCI和第二级SCI)的情形下,第一定时器若是在第二时刻启动第一定时器,则第二时刻可以是以下任一种:
1),反馈信息的终止时刻。
2),反馈信息所占符号的下一个符号。
3),反馈信息所占符号加第二偏移量。
可选的,该第二偏移量是由RRC信令配置的,该RRC信令为PC5RRC信令或者来自网络设备的RRC信令。
在上述步骤501的SCI是二级SCI(包括第一级SCI和第二级SCI)的情形下,第一定时器若是在第三时刻停止第一定时器,则第三时刻是根据第一时长得到的,该第一时长关联于第二终端获取用于侧行链路传输的时域资源的时延。
可选的,第一时长为以下任一种:
T1、T2、T1+T3、T4、T1+T4、T2+T4、T1+T3+T4、T5、T5+T4、T5+T1、或T5+T1+T4;
可选的,第一时长为下述几个能力参数或测量参数中的至少一个或多个的组合值:T1、T2、T3、T4或T5。其中,组合值即T1、T2、T3、T4或T5中任意几个值的和。
其中,T1为第二终端完成资源检测和选择过程所需要的时长,T2为第二终端识别候选资源和选择用于侧行链路传输的资源所需要的时长,T3为第二终端对于反馈信息的处理时延,T4为第二终端的资源选择窗相对于资源检测窗的延时或者说资源选择窗的起始时刻相对于资源检测窗的终结时刻的时延/滞后时间/时长,T5为第二终端完成SCI解码/解析的时长或者第二终端完成SCI解码/解析并且进行RSRP/RSSI测量的时长。可选的,第二终端识别候选资源和选择用于侧行链路传输的资源所需要的时长可以为第二终端识别候选资源和选择用于潜在的侧行链路传输的资源集合所需要的时长。可选的,RSRP测量为在资源检测过程中对于DMRS的RSRP测量。可选的,RSSI测量为在资源检测过程中对于侧行链路能量的测量。
在上述步骤501的SCI是二级SCI(包括第一级SCI和第二级SCI)的情形下,若第一级SCI指示了第二资源集合,第二资源集合包括周期性的第一资源集合,第一资源集合包括N个侧行链路的时域资源,N为正整数,且第一定时器是在第四时刻停止第一定时器,则第四时刻可以是以下任一种:
1),第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号。
其中,y为正整数,z为小于或等于N的正整数。
2),第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号的下一符号。
其中,y为正整数,z为小于或等于N的正整数。
3),第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号。
其中,y为正整数,z为小于或等于N的正整数。
4),第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号的下一符号。
其中,y为正整数,z为小于或等于N的正整数。
综上,当第一终端发送的反馈信息为侧行链路的测量报告或侧行链路的信道状态信息时,则第一终端在第一时刻或第二时刻启动第一定时器,在第一定时器的启动时间内的至少一个时间单元内,第一终端不需要监听侧行链路的控制信息或数据信息,直到第一终端在第三时刻或第四时刻停止第一定时器。具体为,第一终端在第一时刻启动第一定时器,在发送完反馈信息之后,并在第二终端根据反馈信息进行相应的数据发送之前,不需要监听侧行链路的控制信息或数据信息。当第一时刻为SCI中所包含资源的最后一个时,第一定时器的终止时刻为第三时刻。即在获取到的下一次资源之前,第一终端不需要监听侧行链路的控制信息或数据信息。当第一时刻不是SCI中所包含资源的最后一个时,第一定时器的终止时刻为第四时刻。即在SCI所指示的下一个资源相关的时刻之前,第一终端不需要监听侧行链路的控制信息或数据信息。
当反馈信息为侧行链路的HARQ信息时,第一终端在第一时刻或第二时刻启动第一定时器,在第一定时器的启动时间内的至少一个时间单元内,第一终端不需要监听侧行链路的重传数据,直到第一终端在第三时刻或第四时刻停止第一定时器。具体为,第一终端在第一时刻启动第一定时器,在发送完反馈信息之后,并在第二终端根据反馈信息进行相应的数据发送之前,不需要监听侧行链路的重传数据。当第一时刻为SCI中所包含资源的最后一个时,第一定时器的终止时刻为第三时刻。即在获取到的下一次资源之前,第一终端不需要监听侧行链路的重传数据。当第一时刻不是SCI中所包含资源的最后一个时,第一定时器的终止时刻为第四时刻。即在SCI所指示的下一个资源相关的时刻之前,第一终端不需要监听侧行链路的重传数据。
需要说明的是,上述第三时刻是第一时刻或第二时刻之后的时刻,第四时刻是第一时刻或第二时刻之后的时刻。
可选的,在上述步骤502或503之后,还可以包括以下步骤504至步骤505。
步骤504,第一终端启动第二定时器。
具体的,第一终端在第七时刻启动第二定时器,第七时刻为第一定时器的停止时刻、 或第一定时器的停止时刻之后的时刻。例如,第七时刻为第一定时器的停止时刻之后的第一个符号。
其中,当上述反馈信息为侧行链路的测量报告、或侧行链路的CSI,则第二定时器用于指示监听侧行链路的控制信息和/或侧行链路的数据信息的时间段。
当上述反馈信息为HARQ信息,则第二定时器用于指示监听侧行链路的重传数据的时间段。这里的重传数据可以是侧行链路上用于传输重传数据的控制信息或数据信息。可选的,这里的重传数据可以是侧行链路上用于传输第一HARQ进程/相应于第一HARQ进程的重传数据的控制信息或数据信息。
步骤505,第一终端停止第二定时器。
作为一种实现方法,第一终端在第八时刻停止第二定时器,第八时刻是根据第二时长得到的,第二时长是通过RRC信令配置的、或是关联于资源选择窗的时长的一个时长值、或是关联于资源选择/重选的时长的一个时长值。
作为另一种实现方法,当满足第二时长时,或者当超出第二时长时,所述第一终端停止所述第二定时器。
所述第二时长关联于资源选择窗的时长,或者,关联于资源选择/重选的时长,或者,所述第二时长通过信令被配置给第一终端。所述信令为网络设备的RRC信令,或者PC5的RRC信令。其中,超出第二时长,可以理解为从启动第二定时器开始或开始后,时间超出第二时长。
其中,关联于资源选择窗的时长的一个时长值可以是第二终端的资源选择窗的时长,或者,缺省/预定义的资源选择窗的时长,或者,缺省/预定义的资源选择窗的时长加一个参数值,或者,缺省/预定义的资源选择窗的时长乘一个参数值。所述缺省/预定义的资源选择窗的时长无关任何一个终端,可以是工作于侧行链路的终端的资源选择窗的最大值,从而避免漏检任何一个传输的控制信息/数据信息,或者说漏检任何一个重传的控制信息/数据信息。通过上述步骤504至步骤505,第一终端可以在第二定时器的启动时间内才开始监听侧行链路的控制信息和/或侧行链路的数据信息,或者监听侧行链路的重传数据。一方面可以保障第一终端可以在相应的时间段内能够监听到侧行链路的控制信息和/或侧行链路的数据信息,或者监听侧行链路的重传数据。另一方面由于设定了监听的时间段,从而可以避免盲目监听而导致耗电严重,也即可以达到节能目的。
下面结合6个具体示例,对上述第一定时器和第二定时器的使用方法进行说明。以下示例中,以上述反馈信息为HARQ信息,且HARQ信息为NACK为例。
示例一
如图7所示,为定时器的使用示例一。该示例下,盲重传没有被使能。例如,SCI预留的侧行链路资源为1个(即图7中的用于传输TB1的资源)。
第一定时器被设置为:
1),启动时刻:为第一个可以进行HARQ反馈的时刻之后的第一个符号,或第一个可以进行HARQ反馈的时刻之后的第一个符号加上一个偏移量MinTimeGapPSFCH;
2),停止时刻:第一定时器从启动开始,持续第一时长后停止。
其中,第一时长为上述描述的T1、T2、T1+T3、T4、T1+T4、T2+T4、T1+T3+T4、T5、T5+T4、T5+T1、或T5+T1+T4。
第二定时器被设置为:
1),启动时刻:第一定时器的停止时刻或停止时刻之后的时刻作为第二定时器的启动时刻;
2)停止时刻:第二定时器从启动开始,持续第二时长后停止。
其中,第二时长是网络设备通过RRC信令配置的、或是关联于资源选择窗的时长的一个时长值。
需要说明的是,若在第二定时器的停止时刻之前,第一终端成功接收并解调了重传数据,则第一终端可以提前停止第二定时器。
示例二
如图8所示,为定时器的使用示例二。该示例下,盲重传被使能。例如,SCI预留的侧行链路资源为1个(即图8中的用于传输TB1的资源)。
第一定时器被设置为:
1),启动时刻:为第一个预留侧行链路的时域资源传输终止后的第一个符号,或第一个预留侧行链路的时域资源传输终止后的第一个符号加上一个偏移量MinTimeGapPSFCH;
2),停止时刻:第一定时器从启动开始,持续第一时长后停止。
其中,第一时长为上述描述的T1、T2、T1+T3、T4、T1+T4、T2+T4、T1+T3+T4、T5、T5+T4、T5+T1、或T5+T1+T4。
第二定时器被设置为:
1),启动时刻:第一定时器的停止时刻或停止时刻之后的时刻作为第二定时器的启动时刻;
2)停止时刻:第二定时器从启动开始,持续第二时长后停止。
其中,第二时长是网络设备通过RRC信令配置的、或是关联于资源选择窗的时长的一个时长值。
需要说明的是,若在第二定时器的停止时刻之前,第一终端成功接收并解调了重传数据,则第一终端可以提前停止第二定时器。
示例三
如图9所示,为定时器的使用示例三。该示例下,盲重传没有被使能。例如,SCI预留的侧行链路资源为2个(即图9中的用于传输两个TB1的两个资源,以下将第一个TB1对应的资源称为资源1,将第二个TB1对应的资源称为资源2)。第一个可以进行HARQ反馈的时刻在资源1之后,且在资源2之前。
第一定时器被设置为:
1),启动时刻:为第一个可以进行HARQ反馈的时刻之后的第一个符号,或第一个可以进行HARQ反馈的时刻之后的第一个符号加上一个偏移量MinTimeGapPSFCH;
2),停止时刻:资源2的起始时刻。
第二定时器被设置为:
1),启动时刻:第一定时器的停止时刻或停止时刻之后的时刻作为第二定时器的启动时刻;
2)停止时刻:第二定时器从启动开始,持续第二时长后停止。
其中,第二时长是网络设备通过RRC信令配置的、或是关联于资源选择窗的时长的一个时长值。
需要说明的是,若在第二定时器的停止时刻之前,第一终端成功接收并解调了重传数据,则第一终端可以提前停止第二定时器。
示例四
如图10所示,为定时器的使用示例四。该示例下,盲重传没有被使能。例如,SCI预留的侧行链路资源为2个(即图9中的用于传输两个TB1的两个资源,以下将第一个TB1对应的资源称为资源1,将第二个TB1对应的资源称为资源2)。第一个可以进行HARQ反馈的时刻在第二个TB1之后,第一个TB2之前。并且,第二个TB1的数据接收不成功,需要重传。
第一定时器被设置为:
1),启动时刻:为第一个可以进行HARQ反馈的时刻之后的第一个符号,或第一个可以进行HARQ反馈的时刻之后的第一个符号加上一个偏移量MinTimeGapPSFCH;
2),停止时刻:第一定时器从启动开始,持续第一时长后停止。
其中,第一时长为上述描述的T1、T2、T1+T3、T4、T1+T4、T2+T4、T1+T3+T4、T5、T5+T4、T5+T1、或T5+T1+T4。
第二定时器被设置为:
1),启动时刻:第一定时器的停止时刻作为第二定时器的启动时刻;
2)停止时刻:第二定时器从启动开始,持续第二时长后停止。
其中,第二时长是网络设备通过RRC信令配置的、或是关联于资源选择窗的时长的一个时长值。
需要说明的是,若在第二定时器的停止时刻之前,第一终端成功接收并解调了重传数据,则第一终端可以提前停止第二定时器。
示例五
作为一种实现方法,当信道拥塞率大于信道拥塞率阈值时,可以将第一定时器的停止时刻和第二定时器的启动时刻设置为下一个资源周期的起始时刻。这是考虑到信道比较拥塞时,即使第一终端向第二终端发送了反馈信息NACK,考虑到第二终端可能因为信道比较拥塞,无法检测到用于重传数据的新资源,因此第二终端无法重新分配资源以重传数据。因而该情况下,可以使用下一个资源周期的资源用于重传数据。
作为另一种实现方法,可以参考SCI中包含的优先权值,当优先权值小于优先权阈值时,表明通过抢占获取到资源的概率较低,则可以将第一定时器的停止时刻和第二定时器的启动时刻设置为下一个资源周期的起始时刻。
信道拥塞率阈值,和/或优先权阈值,可以通过RRC信令配置。例如,通过网络设备的RRC信令或PC5的RRC信令配置。
作为另一种实现方法,也可以将上述两种方案加以结合来使用。
因此,该示例五中:第一终端接收来自第二终端的SCI,所述SCI用于指示侧行链路的时域资源;
所述第一终端在第一时刻启动第一定时器,所述第一时刻关联于所述SCI所占用或所 指示的侧行链路的时域资源,所述第二时刻关联于所述第一终端发送的反馈信息所占用的时域资源,所述反馈信息包括侧行链路的测量报告、侧行链路的CSI,或侧行链路的HARQ信息,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息;
在信道拥塞率大于信道拥塞率阈值和/或所述SCI中的优先权值小于优先权阈值的情形下,所述第一终端在第三时刻或第四时刻停止所述第一定时器,所述第三时刻为下一个资源周期的起始时刻,所述第四时刻关联于所述SCI指示的侧行链路的时域资源。
其中,这里的第一时刻、第二时刻、第四时刻的含义与前述实施例中的第一时刻、第二时刻、第四时刻的含义相同,可参考前述描述。这里的第三时刻的含义与前述实施例中的第三时刻的含义不同,这里的第三时刻表示下一个资源周期的起始时刻。
在一种可能的实现方法中,所述第一终端在第五时刻启动第二定时器,所述第五时刻为所述第一定时器的停止时刻、或所述第一定时器的停止时刻之后的第一个符号。
在一种可能的实现方法中,所述第一终端在第六时刻停止所述第二定时器,所述第六时刻是根据第二时长得到的,所述第二时长是通过RRC信令配置的、或是关联于资源选择窗的时长的一个时长值、或是关联于资源选择/重选的时长的一个时长值。
实施例2
该实施例用于节约发送侧的终端(即第二终端)的耗电。该实施例中,第二终端在向第一终端发送SCI之后,启动第一定时器,第一定时器用于指示在第一定时器启动后的至少一个时间单元不监听第一终端发送的反馈信息。不监听第一终端发送的反馈信息,可以理解为不需要/不必要监听第一终端发送的反馈信息。也即,在第一定时器的启动时长内,第一终端不会向第二终端发送反馈信息,因此第二终端在这段时长内不必监听反馈信息,从而可以达到节能的目的。以反馈信息是HARQ信息为例,则在第一定时器的启动时长内,第一终端不会向第二终端发送第一HARQ进程(HARQ process)反馈信息,因此第二终端在这段时长内不必监听反馈信息,从而可以达到节能的目的。
后续,在第一定时器停止之后,第二终端启动第二定时器。比如可以是在第一定时器停止时刻启动第二定时器,或者是在第一定时器停止时刻之后的某个时刻,启动第二定时器。第二定时器用于指示监听反馈信息的时间段。也即,在第二定时器启动后的时长内,第二终端才开始监听反馈信息。
如图11所示,为本申请实施例提供的另一种通信方法,该方法包括以下步骤:
步骤1101,第二终端向第一终端发送SCI。
相应地,第一终端接收该SCI。
可选的,当正确检测时,第一终端可以接收到该SCI。
该步骤1101与上述图5实施例中的步骤501相同,可参考前述描述。
步骤1102,第二终端启动第一定时器。
其中,第二终端是在发送SCI之后的某个时刻启动第一定时器,第一定时器用于指示在第一定时器启动后的至少一个时间单元不监听反馈信息,从而可以达到节能的目的。
其中,第一终端可以在第一时刻启动第一定时器。第一时刻关联于上述步骤1101中的SCI所占用或所指示的侧行链路的时域资源。其中,“关联于”指的是与SCI所占用或所指 示的侧行链路的时域资源有关。SCI所占用的侧行链路的时域资源指的是SCI所占用的一个或多个符号。
具体的,第一时刻可以是以下任一种:
1),SCI的起始符号.
2),SCI的起始符号的下一符号。
3),SCI的终止符号。
4),SCI的终止符号的下一符号。
5),SCI指示的第一个时域资源的起始符号。
6),SCI指示的第一个时域资源的起始符号的下一个符号。
7),SCI指示的第一个时域资源的终止符号。
8),SCI指示的第一个时域资源的终止符号的下一个符号。
9),SCI指示的第一个时域资源的起始符号/终止符号加第一偏移量。
10),SCI的起始符号/终止符号加第一偏移量。
可选的,第一偏移量是由RRC信令配置的,RRC信令为PC5RRC信令或者来自网络设备的RRC信令。可选的,该第一偏移量也可以是预定义的。例如该第一偏移量可以为反馈信息处理时延。
步骤1103,第二终端停止第一定时器。
该步骤为可选。
作为一种实现方法,第二终端可以在第二时刻或第二时刻之前停止第一定时器,第二时刻是第一终端发送反馈信息之前的某个时刻,第二时刻关联于第一终端发送的反馈信息所占用的时域资源。这里第二时刻之前停止第一定时器是为了保证不错过接收接下来的反馈信息,或者说及时/及早接收接下来的反馈信息。
可选的,第二终端可以在第二时刻之后停止第一定时器。这里第二时刻之后停止第一定时器是理解第一定时器是最小限制,只要在该第一定时器之后就可以保证不错过接收接下来的反馈信息,或者说只要在该第一定时器之后就可以及时/及早接收接下来的反馈信息。
这里的反馈信息包括侧行链路的测量报告、侧行链路的CSI、或侧行链路的HARQ信息。
可选的,第二时刻为以下任一种:
1),反馈信息的起始时刻。
2),反馈信息所占符号的上一个符号。
3),反馈信息所占符号减第二偏移量;
4),反馈信息所占时域资源的上一个时隙;
其中,反馈信息所占时域资源,可以理解为反馈信息所占时隙或反馈信息所占符号所位于的时隙。
5),反馈信息所占时隙的上一个时隙。
可选的,第二偏移量是由RRC信令配置的,RRC信令为PC5RRC信令或者来自网络设备的RRC信令。可选的,该第二偏移量也可以是预定义的。
作为另一种实现方法,当满足第一时长时,或者当超出第一时长时,所述第二终端停止所述第一定时器。
所述第一时长关联于反馈信息发送的时域位置,或者,所述第一时长通过信令被配置 给第二终端。所述信令为网络设备的RRC信令,或者PC5的RRC信令。其中,超出第一时长,可以理解为从启动第一定时器开始或开始后,时间超出第一时长。
可选的,在上述步骤1102或1103之后,还可以包括以下步骤1104至步骤1105。
步骤1104,第二终端启动第二定时器。
具体的,第二终端在第三时刻或第三时刻之后启动第二定时器,第三时刻为第一定时器的停止时刻、或第一定时器的停止时刻之后的第一个符号,第二定时器用于指示监听反馈信息的时间段。
步骤1105,第二终端停止第二定时器。
作为一种实现方法,第二终端在第四时刻停止第二定时器,第四时刻为网络设备或第二终端预配置的一个值、或预定义的一个值。
其中,预定义的一个值包括:预定义的一个时隙(slot),或者一个反馈信息所占用的时隙数或者符号数。例如,一个HARQ信息占用两个符号或三个符号等。
通过上述步骤1104至步骤1105,第二终端可以在第二定时器的启动时间内才开始监听反馈信息。一方面可以保障第二终端可以在相应的时间段内能够监听到反馈信息。另一方面由于设定了监听的时间段,从而可以避免盲目监听而导致耗电严重,也即可以达到节能目的。
作为另一种实现方法,当满足第二时长时,或者当超出第二时长时,所述第二终端停止所述第二定时器。
所述第二时长关联于反馈信息所占用的时长,或者,所述第二时长通过信令被配置给第二终端。所述信令为网络设备的RRC信令,或者PC5的RRC信令。其中,超出第二时长,可以理解为从启动第二定时器开始或开始后,时间超出第二时长。
需要说明的是,针对上述任意实施例中的第一终端或第二终端,当存在多个定时器(包括上述第一定时器、第二定时器,以及除第一定时器和第二定时器之外的其他现有技术中的定时器)运行时,需要取多个定时器的并集来判断是否处于激活器。即:即使其中一个定时器指示不需要监听,别的定义器指示需要处于激活期或需要监听,则该第一终端或第二终端仍然需要处于激活期或需要监听。
本申请中,关于起始符号,下一个符号,作如下说明:
所述SCI的起始符号。在本申请中,所述SCI的起始符号可以是所述SCI的起始符号的起始点,或者所述SCI的起始符号的终止点。所述SCI的起始符号还可以称之为所述SCI开始,或者所述第一终端接收所述SCI开始,或者所述第一终端接收所述SCI的起始时刻。
所述SCI的起始符号的下一个符号。在本申请中,所述SCI的起始符号的下一个符号可以是所述SCI的起始符号的下一个符号的起始点,或者所述SCI的起始符号的下一个符号的终止点。所述SCI的起始符号的终止点与所述SCI的起始符号的下一符号的起始点可以是同一时刻。所述SCI的起始符号的下一个符号还可以称之为所述第一终端接收所述SCI的起始符号之后,或者称之为所述第一终端接收所述SCI的起始符号的终止时刻。
所述SCI的终止符号。在本申请中,所述SCI的终止符号可以是所述SCI的终止符号的起始点,或者所述SCI的终止符号的终止点。所述SCI的终止符号还可以称之为所述SCI 结束,或者所述第一终端接收所述SCI结束,或者所述第一终端接收所述SCI的结束时刻或终止时刻。
所述SCI的终止符号的下一个符号。在本申请中,所述SCI的终止符号的下一个符号可以是所述SCI的终止符号的下一个符号的起始点,或者所述SCI的终止符号的下一个符号的终止点。所述SCI的终止符号的终止点与所述SCI的终止符号的下一符号的起始点可以是同一时刻。所述SCI的终止符号的下一个符号还可以称之为所述第一终端接收所述SCI的终止符号之后,或者称之为所述第一终端接收所述SCI的终止符号的终止时刻。
所述SCI指示的第一个时域资源的起始符号。在本申请中,所述SCI指示的第一个时域资源的起始符号可以是所述SCI指示的第一个时域资源的起始符号的起始点,或者所述SCI指示的第一个时域资源的起始符号的终止点。
其中,所述SCI指示的第一个时域资源的起始符号可以与所述SCI的起始符号相同,或者,考虑自动增益控制(automatic gain control,AGC)需要的符号个数,所述SCI指示的第一个时域资源的起始符号可以提前于所述SCI的起始符号。可选的,所述SCI的起始符号可以为所述SCI指示的第一个时域资源的起始符号加上AGC符号个数。
所述SCI指示的第一个时域资源的起始符号的下一个符号。在本申请中,所述SCI指示的第一个时域资源的起始符号的下一个符号可以是所述SCI指示的第一个时域资源的起始符号的下一个符号的起始点,或者所述SCI指示的第一个时域资源的起始符号的下一个符号的终止点。第一个时域资源的起始符号的终止点与第一个时域资源的起始符号的下一个符号的起始点可以是同一时刻。
所述SCI指示的第一个时域资源的终止符号。在本申请中,所述SCI指示的第一个时域资源的终止符号可以是所述SCI指示的第一个时域资源的终止符号的起始点,或者所述SCI指示的第一个时域资源的终止符号的终止点。
所述SCI指示的第一个时域资源的终止符号的下一个符号。在本申请中,所述SCI指示的第一个时域资源的终止符号的下一个符号可以是所述SCI指示的第一个时域资源的终止符号的下一个符号的起始点,或者所述SCI指示的第一个时域资源的终止符号的下一个符号的终止点。第一个时域资源的终止符号的终止点与第一个时域资源的终止符号的下一个符号的起始点可以是同一时刻。
在本申请中,“时域资源的起始符号”也可以称之为“时域资源开始”或者“时域资源的起始时刻”,“时域资源的终止符号”也可以称之为“时域资源结束”或者“时域资源的终止时刻”,“符号的起始点”也可以称之为“符号的起始时刻”,或者称之为“符号开始”。“符号的终止点”也可以称之为“符号的终止时刻”,或者称之为“符号结束”。“符号的下一个符号”,也可以称之为“符号之后的下一个符号”,或者称之为“符号之后”,或者称之为“符号之后的第一个符号”。例如终止符号的下一个符号也可以称之为终止符号之后的下一个符号,或者终止符号之后,或者终止符号之后的第一个符号。
在一些示例中,所述SCI的起始符号与所述SCI指示的第一个时域资源的起始符号为同一时刻。在另一些示例中,所述SCI的起始符号与所述SCI指示的第一个时域资源的起始符号不是同一时刻,自动增益控制(automatic gain control,AGC)需要1个符号。实际中,第一个时域资源可以占用14个或12个符号。所述SCI可以占用1个,2个或3个符号,或者AGC之后的1个,2个或3个符号。或者说,第一级SCI可以1个,2个或3个符号,或者AGC之后的1个,2个或3个符号。第二级SCI可以占用1个,2个或3个符 号。第二级SCI位于第一级SCI之后。可选的,可以紧接着第一级SCI,或者与第一级SCI间隔一个或多个符号。上述不限制频域资源是否占用一个子信道,或者一个子信道中的部分。
所述SCI指示的第一资源集合中的第x个时域资源的起始符号,例如可以是所述SCI指示的第一资源集合中的第x个时域资源的起始符号的起始点,或者是所述SCI指示的第一资源集合中的第x个时域资源的起始符号的终止点。
所述SCI指示的第一资源集合中的第x个时域资源的起始符号的下一符号,例如可以是所述SCI指示的第一资源集合中的第x个时域资源的起始符号的下一符号的起始点,或者是所述SCI指示的第一资源集合中的第x个时域资源的起始符号的下一符号的终止点。
所述SCI指示的第一资源集合中的第x个时域资源的终止符号,例如可以是所述SCI指示的第一资源集合中的第x个时域资源的终止符号的起始点,或者是所述SCI指示的第一资源集合中的第x个时域资源的终止符号的终止点。
所述SCI指示的第一资源集合中的第x个时域资源的终止符号的下一符号,例如可以是所述SCI指示的第一资源集合中的第x个时域资源的终止符号的下一符号的起始点,或者所述SCI指示的第一资源集合中的第x个时域资源的终止符号的下一符号的终止点。
所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的起始符号,例如可以是所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的起始符号的起始点,或者是所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的起始符号的终止点。
所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的起始符号的下一符号,例如可以是所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的起始符号的下一符号的起始点,或者是所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的起始符号的下一符号的终止点。
所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的终止符号,例如可以是所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的终止符号的起始点,或者是所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的终止符号的终止点。
所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的终止符号的下一符号,例如可以是所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的终止符号的下一符号的起始点,或者是所述SCI指示的第二资源集合中的第y个第一资源集合中的第x个时域资源的终止符号的下一符号的终止点。
依次类推,不再详细列举。
参考图12,为本申请实施例提供的一种通信装置的示意图。该装置用于实现上述方法实施例中对应终端(如第一终端或第二终端)所执行的各个步骤,如图12所示,该装置1200包括收发单元1210、定时器启动单元1220和定时器停止单元1230。
在第一个实施例中:
收发单元1210,用于接收来自第二终端的侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;定时器启动单元1220,用于在第一时刻或第二时刻启动第一定时器, 所述第一时刻关联于所述SCI所占用或所指示的侧行链路的时域资源,所述第二时刻关联于第一终端发送的反馈信息所占用的时域资源,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI,或侧行链路的混合自动重传请求HARQ信息,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息;定时器停止单元1230,用于在第三时刻或第四时刻停止所述第一定时器,所述第三时刻是根据第一时长得到的,所述第一时长关联于所述第二终端获取用于侧行链路传输的时域资源的时延,所述第四时刻关联于所述SCI指示的侧行链路的时域资源。
在一种可能的实现方法中,所述第一时刻为以下任一种:
所述SCI的起始符号;
所述SCI的起始符号的下一符号;
所述SCI的终止符号;
所述SCI的终止符号的下一符号;
所述SCI指示的第一个时域资源的起始符号;
所述SCI指示的第一个时域资源的起始符号的下一个符号;
所述SCI指示的第一个时域资源的终止符号;
所述SCI指示的第一个时域资源的终止符号的下一个符号;
所述SCI指示的第一个时域资源的终止符号加第一偏移量。
在一种可能的实现方法中,所述第一偏移量是由无线资源控制RRC信令配置的,所述RRC信令为PC5RRC信令或者来自网络设备的RRC信令。
在一种可能的实现方法中,所述第二时刻为以下任一种:
所述反馈信息的终止时刻;
所述反馈信息所占符号的下一个符号;
所述反馈信息所占符号加第二偏移量;
所述反馈信息所占时域资源的下一个时隙;
所述反馈信息所占时隙的下一个时隙。
在一种可能的实现方法中,所述第二偏移量是由RRC信令配置的,所述RRC信令为PC5RRC信令或者来自网络设备的RRC信令。
在一种可能的实现方法中,所述第一时长为以下:
T1、T2、T1+T3、T4、T1+T4、T2+T4、T1+T3+T4、T5、T5+T4、T5+T1、或T5+T1+T4;
其中,所述T1为所述第二终端完成资源检测和选择过程所需要的时长,所述T2为所述第二终端识别候选资源和选择用于侧行链路传输的资源所需要的时长,所述T3为所述第二终端对于所述反馈信息的处理时延,所述T4为第二终端的资源选择窗相对于资源检测窗的延时,所述T5为所述第二终端完成SCI解码/解析的时长或者所述第二终端完成SCI解码/解析并且进行参考信号接收功率RSRP/接收信号强度指示RSSI测量的时长。
在一种可能的实现方法中,所述SCI指示的侧行链路的时域资源包括第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为第五时刻、或第五时刻加第三偏移量、或所述第一时刻与第一差值对应的时长的和、或所述第二时刻与第二差值对应的时长的和,所述第一差值为所述第一时刻与第五时刻的差值,所述第二差值为所述第二时刻与第五时刻的差值;
其中,所述第五时刻为以下任一种:
所述SCI指示的第一资源集合中的第x个时域资源的起始符号;
所述SCI指示的第一资源集合中的第x个时域资源的起始符号的下一符号;
所述SCI指示的第一资源集合中的第x个时域资源的终止符号;
所述SCI指示的第一资源集合中的第x个时域资源的终止符号的下一符号;
其中,x为小于或等于N、且大于1的整数。
在一种可能的实现方法中,所述SCI指示的侧行链路的时域资源包括第二资源集合,所述第二资源集合包括周期性的第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为第六时刻、或第六时刻加第四偏移量、或所述第一时刻与第三差值对应的时长的和、或所述第二时刻与第四差值对应的时长的和,所述第三差值为所述第一时刻与第六时刻的差值,所述第四差值为所述第二时刻与第六时刻的差值;其中,所述第六时刻为以下任一种:
所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号;
所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号的下一符号;
所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号;
所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号的下一符号;
其中,y为正整数,z为小于或等于N的正整数。
在一种可能的实现方法中,所述SCI包括第一级SCI和第二级SCI;所述第一时刻为以下任一种:
所述第一级SCI的起始符号或所述第二级SCI的起始符号;
所述第一级SCI的起始符号的下一符号或所述第二级SCI的起始符号的下一符号;
所述第一级SCI的终止符号或所述第二级SCI的终止符号;
所述第一级SCI的终止符号的下一符号或所述第二级SCI的终止符号的下一个符号;
所述第一级SCI指示的第一个时域资源的起始符号;
所述第一级SCI指示的第一个时域资源的起始符号的下一个符号;
所述第一级SCI指示的第一个时域资源的终止符号;
所述第一级SCI指示的第一个时域资源的终止符号的下一个符号。
在一种可能的实现方法中,所述第一级SCI指示了第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为以下任一种:
所述第一资源集合中的第x个时域资源的起始符号;
所述第一资源集合中的第x个时域资源的起始符号的下一符号;
所述第一资源集合中的第x个时域资源的终止符号;
所述第一资源集合中的第x个时域资源的终止符号的下一符号;
其中,x为小于或等于N、且大于1的整数。
在一种可能的实现方法中,所述第一级SCI指示了第二资源集合,所述第二资源集合包括周期性的第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整 数;所述第四时刻为以下任一种:
所述第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号;
所述第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号的下一符号;
所述第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号;
所述第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号的下一符号;
其中,y为正整数,z为小于或等于N的正整数。
在一种可能的实现方法中,定时器启动单元1220,还用于在第七时刻启动第二定时器,所述第七时刻为所述第一定时器的停止时刻、或所述第一定时器的停止时刻之后的第一个符号。
在一种可能的实现方法中,定时器停止单元1230,还用于在第八时刻停止所述第二定时器,所述第八时刻是根据第二时长得到的,所述第二时长是通过RRC信令配置的、或是关联于资源选择窗的时长的一个时长值、或是关联于资源选择/重选的时长的一个时长值。
在一种可能的实现方法中,所述反馈信息为侧行链路的测量报告、或侧行链路的CSI,所述第二定时器用于指示监听侧行链路的控制信息和/或侧行链路的数据信息的时间段。
在一种可能的实现方法中,所述反馈信息为HARQ信息,所述第二定时器用于指示监听侧行链路的重传数据的时间段。
在第二个实施例中:
收发单元1210,用于向第一终端发送侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;定时器启动单元1220,用于在第一时刻启动第一定时器,所述第一时刻关联于SCI所占用或所指示的侧行链路的时域资源,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听反馈信息;定时器停止单元1230,用于在第二时刻停止所述第一定时器,所述第二时刻关联于所述第一终端发送的反馈信息所占用的时域资源,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI、或侧行链路的混合自动重传请求HARQ信息。
在一种可能的实现方法中,所述第一时刻为以下任一种:
所述SCI的起始符号;
所述SCI的起始符号的下一符号;
所述SCI的终止符号;
所述SCI的终止符号的下一符号;
所述SCI指示的第一个时域资源的起始符号;
所述SCI指示的第一个时域资源的起始符号的下一个符号;
所述SCI指示的第一个时域资源的终止符号;
所述SCI指示的第一个时域资源的终止符号的下一个符号;
所述SCI指示的第一个时域资源的终止符号加第一偏移量。
在一种可能的实现方法中,所述第一偏移量是由无线资源控制RRC信令配置的,所述RRC信令为PC5RRC信令或者来自网络设备的RRC信令。
在一种可能的实现方法中,所述第二时刻为以下任一种:
所述反馈信息的起始时刻;
所述反馈信息所占符号的上一个符号;
所述反馈信息所占符号减第二偏移量;
所述反馈信息所占时域资源的上一个时隙;
所述反馈信息所占时隙的上一个时隙。
在一种可能的实现方法中,所述第二偏移量是由RRC信令配置的,所述RRC信令为PC5RRC信令或者来自网络设备的RRC信令。
在一种可能的实现方法中,定时器启动单元1220,还用于在第三时刻启动第二定时器,所述第三时刻为所述第一定时器的停止时刻、或所述第一定时器的停止时刻之后的第一个符号,所述第二定时器用于指示监听所述反馈信息的时间段。
在一种可能的实现方法中,定时器停止单元1230,还用于在第四时刻停止所述第二定时器,所述第四时刻为网络设备或所述第二终端预配置的一个值、或预定义的一个值。
可以理解的是,上述各个单元也可以称为模块或者电路等,并且上述各个单元可以独立设置,也可以全部或者部分集成。
可选的,上述通信装置1200还可以包括存储单元,该存储单元用于存储数据或者指令(也可以称为代码或者程序),上述各个单元可以和存储单元交互或者耦合,以实现对应的方法或者功能。例如,定时器启动单元1220、定时器停止单元1230可以读取存储单元中的数据或者指令,使得通信装置实现上述实施例中的方法。
应理解以上装置中单元的划分仅仅是一种逻辑功能的划分,实际实现时可以全部或部分集成到一个物理实体上,也可以物理上分开。且装置中的单元可以全部以软件通过处理元件调用的形式实现;也可以全部以硬件的形式实现;还可以部分单元以软件通过处理元件调用的形式实现,部分单元以硬件的形式实现。例如,各个单元可以为单独设立的处理元件,也可以集成在装置的某一个芯片中实现,此外,也可以以程序的形式存储于存储器中,由装置的某一个处理元件调用并执行该单元的功能。此外这些单元全部或部分可以集成在一起,也可以独立实现。这里所述的处理元件又可以成为处理器,可以是一种具有信号的处理能力的集成电路。在实现过程中,上述方法的各个步骤或以上各个单元可以通过处理器元件中的硬件的集成逻辑电路实现,或者也可以是以软件通过处理元件调用的形式实现。
在一个例子中,以上任一装置中的单元可以是被配置成实施以上方法的一个或多个集成电路,例如:一个或多个特定集成电路(Application Specific Integrated Circuit,ASIC),或,一个或多个微处理器(digital singnal processor,DSP),或,一个或者多个现场可编程门阵列(Field Programmable Gate Array,FPGA),或这些集成电路形式中至少两种的组合。再如,当装置中的单元可以通过处理元件调度程序的形式实现时,该处理元件可以是通用处理器,例如中央处理器(Central Processing Unit,CPU)或其它可以调用程序的处理器。再如,这些单元可以集成在一起,以片上***(system-on-a-chip,SOC)的形式实现。
以上用于接收的单元(例如接收单元)是一种该装置的接口电路,用于从其它装置接收信号。例如,当该装置以芯片的方式实现时,该接收单元是该芯片用于从其它芯片或装置接收信号的接口电路。以上用于发送的单元(例如发送单元)是一种该装置的接口电路,用于向其它装置发送信号。例如,当该装置以芯片的方式实现时,该发送单元是该芯片用于向其它芯片或装置发送信号的接口电路。
参考图13,其为本申请实施例提供的一种终端的结构示意图。该终端用于实现以上实施例中终端(如第一终端或第二终端)的操作。如图13所示,该终端包括:天线1310、射频装置1320、信号处理部分1330。天线1310与射频装置1320连接。在下行方向上,射频装置1320通过天线1310接收网络设备或其他终端发送的信息,将网络设备或其他终端发送的信息发送给信号处理部分1330进行处理。在上行方向上,信号处理部分1330对终端的信息进行处理,并发送给射频装置1320,射频装置1320对终端的信息进行处理后经过天线1310发送给网络设备或其他终端。
信号处理部分1330用于实现对数据各通信协议层的处理。信号处理部分1330可以为该终端的一个子***,则该终端还可以包括其它子***,例如中央处理子***,用于实现对终端操作***以及应用层的处理;再如,周边子***用于实现与其它设备的连接。信号处理部分1330可以为单独设置的芯片。可选的,以上的装置可以位于信号处理部分1330。
信号处理部分1330可以包括一个或多个处理元件1331,例如,包括一个主控CPU和其它集成电路,以及包括接口电路1333。此外,该信号处理部分1330还可以包括存储元件1332。存储元件1332用于存储数据和程序,用于执行以上方法中终端所执行的方法的程序可能存储,也可能不存储于该存储元件1332中,例如,存储于信号处理部分1330之外的存储器中,使用时信号处理部分1330加载该程序到缓存中进行使用。接口电路1333用于与装置通信。以上装置可以位于信号处理部分1330,该信号处理部分1330可以通过芯片实现,该芯片包括至少一个处理元件和接口电路,其中处理元件用于执行以上终端执行的任一种方法的各个步骤,接口电路用于与其它装置通信。在一种实现中,实现以上方法中各个步骤的单元可以通过处理元件调度程序的形式实现,例如该装置包括处理元件和存储元件,处理元件调用存储元件存储的程序,以执行以上方法实施例中终端执行的方法。存储元件可以为处理元件处于同一芯片上的存储元件,即片内存储元件。
在另一种实现中,用于执行以上方法中终端所执行的方法的程序可以在与处理元件处于不同芯片上的存储元件,即片外存储元件。此时,处理元件从片外存储元件调用或加载程序于片内存储元件上,以调用并执行以上方法实施例中终端执行的方法。
在又一种实现中,终端实现以上方法中各个步骤的单元可以是被配置成一个或多个处理元件,这些处理元件设置于信号处理部分1330上,这里的处理元件可以为集成电路,例如:一个或多个ASIC,或,一个或多个DSP,或,一个或者多个FPGA,或者这些类集成电路的组合。这些集成电路可以集成在一起,构成芯片。
实现以上方法中各个步骤的单元可以集成在一起,以片上***(system-on-a-chip,SOC)的形式实现,该SOC芯片,用于实现以上方法。该芯片内可以集成至少一个处理元件和存储元件,由处理元件调用存储元件的存储的程序的形式实现以上终端执行的方法;或者,该芯片内可以集成至少一个集成电路,用于实现以上终端执行的方法;或者,可以结合以上实现方式,部分单元的功能通过处理元件调用程序的形式实现,部分单元的功能通过集成电路的形式实现。
可见,以上装置可以包括至少一个处理元件和接口电路,其中至少一个处理元件用于执行以上方法实施例所提供的任一种终端执行的方法。处理元件可以以第一种方式:即调用存储元件存储的程序的方式执行终端执行的部分或全部步骤;也可以以第二种方式:即通过处理器元件中的硬件的集成逻辑电路结合指令的方式执行终端执行的部分或全部步 骤;当然,也可以结合第一种方式和第二种方式执行终端执行的部分或全部步骤。
这里的处理元件同以上描述,可以是通用处理器,例如CPU,还可以是被配置成实施以上方法的一个或多个集成电路,例如:一个或多个ASIC,或,一个或多个微处理器DSP,或,一个或者多个FPGA等,或这些集成电路形式中至少两种的组合。存储元件可以是一个存储器,也可以是多个存储元件的统称。
本领域普通技术人员可以理解:本申请中涉及的第一、第二、第三、第四等各种数字编号仅为描述方便进行的区分,并不用来限制本申请实施例的范围,也表示先后顺序。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。“至少一个”是指一个或者多个。至少两个是指两个或者多个。“至少一个”、“任意一个”或其类似表达,是指的这些项中的任意组合,包括单项(个)或复数项(个)的任意组合。例如,a,b,或c中的至少一项(个、种),可以表示:a,b,c,a-b,a-c,b-c,或a-b-c,其中a,b,c可以是单个,也可以是多个。“多个”是指两个或两个以上,其它量词与之类似。
应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本发明实施例的实施过程构成任何限定。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的***、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的***、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个***,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,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包括一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用 介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如固态硬盘(solid state disk,SSD))等。
本申请实施例中所描述的各种说明性的逻辑单元和电路可以通过通用处理器,数字信号处理器,专用集成电路(ASIC),现场可编程门阵列(FPGA)或其它可编程逻辑装置,离散门或晶体管逻辑,离散硬件部件,或上述任何组合的设计来实现或操作所描述的功能。通用处理器可以为微处理器,可选地,该通用处理器也可以为任何传统的处理器、控制器、微控制器或状态机。处理器也可以通过计算装置的组合来实现,例如数字信号处理器和微处理器,多个微处理器,一个或多个微处理器联合一个数字信号处理器核,或任何其它类似的配置来实现。
本申请实施例中所描述的方法或算法的步骤可以直接嵌入硬件、处理器执行的软件单元、或者这两者的结合。软件单元可以存储于随机存取存储器(Random Access Memory,RAM)、闪存、只读存储器(Read-Only Memory,ROM)、EPROM存储器、EEPROM存储器、寄存器、硬盘、可移动磁盘、CD-ROM或本领域中其它任意形式的存储媒介中。示例性地,存储媒介可以与处理器连接,以使得处理器可以从存储媒介中读取信息,并可以向存储媒介存写信息。可选地,存储媒介还可以集成到处理器中。处理器和存储媒介可以设置于ASIC中。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
本领域技术人员应该可以意识到,在上述一个或多个示例中,本申请所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时,可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质,其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
尽管结合具体特征及其实施例对本申请进行了描述,显而易见的,在不脱离本申请的精神和范围的情况下,可对其进行各种修改和组合。相应地,本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明,且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包括这些改动和变型在内。
Claims (55)
- 一种通信方法,其特征在于,所述方法包括:第一终端接收来自第二终端的侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;所述第一终端在第一时刻或第二时刻启动第一定时器,所述第一时刻关联于所述SCI所占用或所指示的侧行链路的时域资源,所述第二时刻关联于所述第一终端发送的反馈信息所占用的时域资源,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI,或侧行链路的混合自动重传请求HARQ信息,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息。
- 如权利要求1所述的方法,其特征在于,还包括:所述第一终端在第三时刻或第四时刻停止所述第一定时器,所述第三时刻是根据第一时长得到的,所述第一时长关联于所述第二终端获取用于侧行链路传输的时域资源的时延,所述第四时刻关联于所述SCI指示的侧行链路的时域资源。
- 如权利要求1或2所述的方法,其特征在于,所述第一时刻为以下任一种:所述SCI的起始符号;所述SCI的起始符号的下一符号;所述SCI的终止符号;所述SCI的终止符号的下一符号;所述SCI指示的第一个时域资源的起始符号;所述SCI指示的第一个时域资源的起始符号的下一个符号;所述SCI指示的第一个时域资源的终止符号;所述SCI指示的第一个时域资源的终止符号的下一个符号;所述SCI指示的第一个时域资源的终止符号加第一偏移量。
- 如权利要求3所述的方法,其特征在于,所述第一偏移量是由无线资源控制RRC信令配置的,所述RRC信令为PC5 RRC信令或者来自网络设备的RRC信令。
- 如权利要求1或2所述的方法,其特征在于,所述第二时刻为以下任一种:所述反馈信息的终止时刻;所述反馈信息所占符号的下一个符号;所述反馈信息所占符号加第二偏移量;所述反馈信息所占时域资源的下一个时隙;所述反馈信息所占时隙的下一个时隙。
- 如权利要求5所述的方法,其特征在于,所述第二偏移量是由RRC信令配置的,所述RRC信令为PC5 RRC信令或者来自网络设备的RRC信令。
- 如权利要求2所述的方法,其特征在于,所述第一时长为以下任一种:T1、T2、T1+T3、T4、T1+T4、T2+T4、T1+T3+T4、T5、T5+T4、T5+T1、或T5+T1+T4;其中,所述T1为所述第二终端完成资源检测和选择过程所需要的时长,所述T2为所述第二终端识别候选资源和选择用于侧行链路传输的资源所需要的时长,所述T3为所述第二终端对于所述反馈信息的处理时延,所述T4为第二终端的资源选择窗相对于资源检测窗的延时,所述T5为所述第二终端完成SCI解码/解析的时长或者所述第二终端完成SCI 解码/解析并且进行参考信号接收功率RSRP/接收信号强度指示RSSI测量的时长。
- 如权利要求2所述的方法,其特征在于,所述SCI指示的侧行链路的时域资源包括第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为第五时刻、或第五时刻加第三偏移量、或所述第一时刻与第一差值对应的时长的和、或所述第二时刻与第二差值对应的时长的和,所述第一差值为所述第一时刻与第五时刻的差值,所述第二差值为所述第二时刻与第五时刻的差值;其中,所述第五时刻为以下任一种:所述SCI指示的第一资源集合中的第x个时域资源的起始符号;所述SCI指示的第一资源集合中的第x个时域资源的起始符号的下一符号;所述SCI指示的第一资源集合中的第x个时域资源的终止符号;所述SCI指示的第一资源集合中的第x个时域资源的终止符号的下一符号;其中,x为小于或等于N、且大于1的整数。
- 如权利要求2所述的方法,其特征在于,所述SCI指示的侧行链路的时域资源包括第二资源集合,所述第二资源集合包括周期性的第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为第六时刻、或第六时刻加第四偏移量、或所述第一时刻与第三差值对应的时长的和、或所述第二时刻与第四差值对应的时长的和,所述第三差值为所述第一时刻与第六时刻的差值,所述第四差值为所述第二时刻与第六时刻的差值;其中,所述第六时刻为以下任一种:所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号;所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号的下一符号;所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号;所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号的下一符号;其中,y为正整数,z为小于或等于N的正整数。
- 如权利要求1或2所述的方法,其特征在于,所述SCI包括第一级SCI和第二级SCI;所述第一时刻为以下任一种:所述第一级SCI的起始符号或所述第二级SCI的起始符号;所述第一级SCI的起始符号的下一符号或所述第二级SCI的起始符号的下一符号;所述第一级SCI的终止符号或所述第二级SCI的终止符号;所述第一级SCI的终止符号的下一符号或所述第二级SCI的终止符号的下一个符号;所述第一级SCI指示的第一个时域资源的起始符号;所述第一级SCI指示的第一个时域资源的起始符号的下一个符号;所述第一级SCI指示的第一个时域资源的终止符号;所述第一级SCI指示的第一个时域资源的终止符号的下一个符号。
- 如权利要求2所述的方法,其特征在于,所述SCI包括第一级SCI和第二级SCI; 所述第一级SCI指示了第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为以下任一种:所述第一资源集合中的第x个时域资源的起始符号;所述第一资源集合中的第x个时域资源的起始符号的下一符号;所述第一资源集合中的第x个时域资源的终止符号;所述第一资源集合中的第x个时域资源的终止符号的下一符号;其中,x为小于或等于N、且大于1的整数。
- 如权利要求2所述的方法,其特征在于,所述SCI包括第一级SCI和第二级SCI;所述第一级SCI指示了第二资源集合,所述第二资源集合包括周期性的第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为以下任一种:所述第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号;所述第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号的下一符号;所述第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号;所述第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号的下一符号;其中,y为正整数,z为小于或等于N的正整数。
- 如权利要求1至12任一所述的方法,其特征在于,还包括:所述第一终端在第七时刻启动第二定时器,所述第七时刻为所述第一定时器的停止时刻、或所述第一定时器的停止时刻之后的第一个符号。
- 如权利要求13所述的方法,其特征在于,所述第一终端在第八时刻停止所述第二定时器,所述第八时刻是根据第二时长得到的,所述第二时长是通过RRC信令配置的、或是关联于资源选择窗的时长的一个时长值、或是关联于资源选择/重选的时长的一个时长值。
- 如权利要求13或14所述的方法,其特征在于,所述反馈信息为侧行链路的测量报告、或侧行链路的CSI,所述第二定时器用于指示监听侧行链路的控制信息和/或侧行链路的数据信息的时间段。
- 如权利要求13或14所述的方法,其特征在于,所述反馈信息为HARQ信息,所述第二定时器用于指示监听侧行链路的重传数据的时间段。
- 一种通信方法,其特征在于,包括:第二终端向第一终端发送侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;所述第二终端在第一时刻启动第一定时器,所述第一时刻关联于SCI所占用或所指示的侧行链路的时域资源,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听反馈信息,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI、或侧行链路的混合自动重传请求HARQ信息。
- 如权利要求17所述的方法,其特征在于,还包括:所述第二终端在第二时刻停止所述第一定时器,所述第二时刻关联于所述第一终端发 送的反馈信息所占用的时域资源。
- 如权利要求17或18所述的方法,其特征在于,所述第一时刻为以下任一种:所述SCI的起始符号;所述SCI的起始符号的下一符号;所述SCI的终止符号;所述SCI的终止符号的下一符号;所述SCI指示的第一个时域资源的起始符号;所述SCI指示的第一个时域资源的起始符号的下一个符号;所述SCI指示的第一个时域资源的终止符号;所述SCI指示的第一个时域资源的终止符号的下一个符号;所述SCI指示的第一个时域资源的终止符号加第一偏移量。
- 如权利要求19所述的方法,其特征在于,所述第一偏移量是由无线资源控制RRC信令配置的,所述RRC信令为PC5 RRC信令或者来自网络设备的RRC信令。
- 如权利要求18所述的方法,其特征在于,所述第二时刻为以下任一种:所述反馈信息的起始时刻;所述反馈信息所占符号的上一个符号;所述反馈信息所占符号减第二偏移量;所述反馈信息所占时域资源的上一个时隙;所述反馈信息所占时隙的上一个时隙。
- 如权利要求21所述的方法,其特征在于,所述第二偏移量是由RRC信令配置的,所述RRC信令为PC5 RRC信令或者来自网络设备的RRC信令。
- 如权利要求17至22任一所述的方法,其特征在于,还包括:所述第二终端在第三时刻启动第二定时器,所述第三时刻为所述第一定时器的停止时刻、或所述第一定时器的停止时刻之后的第一个符号,所述第二定时器用于指示监听所述反馈信息的时间段。
- 如权利要求23所述的方法,其特征在于,还包括:所述第二终端在第四时刻停止所述第二定时器,所述第四时刻为网络设备或所述第二终端预配置的一个值、或预定义的一个值。
- 一种通信装置,其特征在于,包括:收发单元,用于接收来自第二终端的侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;定时器启动单元,用于在第一时刻或第二时刻启动第一定时器,所述第一时刻关联于所述SCI所占用或所指示的侧行链路的时域资源,所述第二时刻关联于第一终端发送的反馈信息所占用的时域资源,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI,或侧行链路的混合自动重传请求HARQ信息,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息。
- 如权利要求25所述的装置,其特征在于,所述装置包括定时器停止单元,用于在第三时刻或第四时刻停止所述第一定时器,所述第三时刻是根据第一时长得到的,所述第一时长关联于所述第二终端获取用于侧行链路传输的时域资源的时延,所述第四时刻关联 于所述SCI指示的侧行链路的时域资源。
- 如权利要求25或26所述的装置,其特征在于,所述第一时刻为以下任一种:所述SCI的起始符号;所述SCI的起始符号的下一符号;所述SCI的终止符号;所述SCI的终止符号的下一符号;所述SCI指示的第一个时域资源的起始符号;所述SCI指示的第一个时域资源的起始符号的下一个符号;所述SCI指示的第一个时域资源的终止符号;所述SCI指示的第一个时域资源的终止符号的下一个符号;所述SCI指示的第一个时域资源的终止符号加第一偏移量。
- 如权利要求27所述的装置,其特征在于,所述第一偏移量是由无线资源控制RRC信令配置的,所述RRC信令为PC5 RRC信令或者来自网络设备的RRC信令。
- 如权利要求25或26所述的装置,其特征在于,所述第二时刻为以下任一种:所述反馈信息的终止时刻;所述反馈信息所占符号的下一个符号;所述反馈信息所占符号加第二偏移量;所述反馈信息所占时域资源的下一个时隙;所述反馈信息所占时隙的下一个时隙。
- 如权利要求29所述的装置,其特征在于,所述第二偏移量是由RRC信令配置的,所述RRC信令为PC5 RRC信令或者来自网络设备的RRC信令。
- 如权利要求26所述的装置,其特征在于,所述第一时长为以下任一种:T1、T2、T1+T3、T4、T1+T4、T2+T4、T1+T3+T4、T5、T5+T4、T5+T1、或T5+T1+T4;其中,所述T1为所述第二终端完成资源检测和选择过程所需要的时长,所述T2为所述第二终端识别候选资源和选择用于侧行链路传输的资源所需要的时长,所述T3为所述第二终端对于所述反馈信息的处理时延,所述T4为第二终端的资源选择窗相对于资源检测窗的延时,所述T5为所述第二终端完成SCI解码/解析的时长或者所述第二终端完成SCI解码/解析并且进行参考信号接收功率RSRP/接收信号强度指示RSSI测量的时长。
- 如权利要求26所述的装置,其特征在于,所述SCI指示的侧行链路的时域资源包括第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为第五时刻、或第五时刻加第三偏移量、或所述第一时刻与第一差值对应的时长的和、或所述第二时刻与第二差值对应的时长的和,所述第一差值为所述第一时刻与第五时刻的差值,所述第二差值为所述第二时刻与第五时刻的差值;其中,所述第五时刻为以下任一种:所述SCI指示的第一资源集合中的第x个时域资源的起始符号;所述SCI指示的第一资源集合中的第x个时域资源的起始符号的下一符号;所述SCI指示的第一资源集合中的第x个时域资源的终止符号;所述SCI指示的第一资源集合中的第x个时域资源的终止符号的下一符号;其中,x为小于或等于N、且大于1的整数。
- 如权利要求26所述的装置,其特征在于,所述SCI指示的侧行链路的时域资源包 括第二资源集合,所述第二资源集合包括周期性的第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为第六时刻、或第六时刻加第四偏移量、或所述第一时刻与第三差值对应的时长的和、或所述第二时刻与第四差值对应的时长的和,所述第三差值为所述第一时刻与第六时刻的差值,所述第四差值为所述第二时刻与第六时刻的差值;其中,所述第六时刻为以下任一种:所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号;所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号的下一符号;所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号;所述SCI指示的第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号的下一符号;其中,y为正整数,z为小于或等于N的正整数。
- 如权利要求25或26所述的装置,其特征在于,所述SCI包括第一级SCI和第二级SCI;所述第一时刻为以下任一种:所述第一级SCI的起始符号或所述第二级SCI的起始符号;所述第一级SCI的起始符号的下一符号或所述第二级SCI的起始符号的下一符号;所述第一级SCI的终止符号或所述第二级SCI的终止符号;所述第一级SCI的终止符号的下一符号或所述第二级SCI的终止符号的下一个符号;所述第一级SCI指示的第一个时域资源的起始符号;所述第一级SCI指示的第一个时域资源的起始符号的下一个符号;所述第一级SCI指示的第一个时域资源的终止符号;所述第一级SCI指示的第一个时域资源的终止符号的下一个符号。
- 如权利要求26所述的装置,其特征在于,所述SCI包括第一级SCI和第二级SCI;所述第一级SCI指示了第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为以下任一种:所述第一资源集合中的第x个时域资源的起始符号;所述第一资源集合中的第x个时域资源的起始符号的下一符号;所述第一资源集合中的第x个时域资源的终止符号;所述第一资源集合中的第x个时域资源的终止符号的下一符号;其中,x为小于或等于N、且大于1的整数。
- 如权利要求26所述的装置,其特征在于,所述SCI包括第一级SCI和第二级SCI;所述第一级SCI指示了第二资源集合,所述第二资源集合包括周期性的第一资源集合,所述第一资源集合包括N个侧行链路的时域资源,N为正整数;所述第四时刻为以下任一种:所述第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号;所述第二资源集合中的第y个第一资源集合中的第z个时域资源的起始符号的下一符号;所述第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号;所述第二资源集合中的第y个第一资源集合中的第z个时域资源的终止符号的下一符号;其中,y为正整数,z为小于或等于N的正整数。
- 如权利要求25至36任一所述的装置,其特征在于,所述定时器启动单元,还用于在第七时刻启动第二定时器,所述第七时刻为所述第一定时器的停止时刻、或所述第一定时器的停止时刻之后的第一个符号。
- 如权利要求37所述的装置,其特征在于,所述装置包括定时器停止单元,用于在第八时刻停止所述第二定时器,所述第八时刻是根据第二时长得到的,所述第二时长是通过RRC信令配置的、或是关联于资源选择窗的时长的一个时长值、或是关联于资源选择/重选的时长的一个时长值。
- 如权利要求37或38所述的装置,其特征在于,所述反馈信息为侧行链路的测量报告、或侧行链路的CSI,所述第二定时器用于指示监听侧行链路的控制信息和/或侧行链路的数据信息的时间段。
- 如权利要求37或38所述的装置,其特征在于,所述反馈信息为HARQ信息,所述第二定时器用于指示监听侧行链路的重传数据的时间段。
- 一种通信装置,其特征在于,包括:收发单元,用于向第一终端发送侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;定时器启动单元,用于在第一时刻启动第一定时器,所述第一时刻关联于SCI所占用或所指示的侧行链路的时域资源,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听反馈信息,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI、或侧行链路的混合自动重传请求HARQ信息。
- 如权利要求41所述的装置,其特征在于,所述装置包括定时器停止单元,用于在第二时刻停止所述第一定时器,所述第二时刻关联于所述第一终端发送的反馈信息所占用的时域资源。
- 如权利要求41或42所述的装置,其特征在于,所述第一时刻为以下任一种:所述SCI的起始符号;所述SCI的起始符号的下一符号;所述SCI的终止符号;所述SCI的终止符号的下一符号;所述SCI指示的第一个时域资源的起始符号;所述SCI指示的第一个时域资源的起始符号的下一个符号;所述SCI指示的第一个时域资源的终止符号;所述SCI指示的第一个时域资源的终止符号的下一个符号;所述SCI指示的第一个时域资源的终止符号加第一偏移量。
- 如权利要求43所述的装置,其特征在于,所述第一偏移量是由无线资源控制RRC信令配置的,所述RRC信令为PC5 RRC信令或者来自网络设备的RRC信令。
- 如权利要求42所述的装置,其特征在于,所述第二时刻为以下任一种:所述反馈信息的起始时刻;所述反馈信息所占符号的上一个符号;所述反馈信息所占符号减第二偏移量;所述反馈信息所占时域资源的上一个时隙;所述反馈信息所占时隙的上一个时隙。
- 如权利要求45所述的装置,其特征在于,所述第二偏移量是由RRC信令配置的,所述RRC信令为PC5 RRC信令或者来自网络设备的RRC信令。
- 如权利要求41至46任一所述的装置,其特征在于,所述定时器启动单元,还用于在第三时刻启动第二定时器,所述第三时刻为所述第一定时器的停止时刻、或所述第一定时器的停止时刻之后的第一个符号,所述第二定时器用于指示监听所述反馈信息的时间段。
- 如权利要求47所述的装置,其特征在于,所述装置包括定时器停止单元,用于在第四时刻停止所述第二定时器,所述第四时刻为网络设备或第二终端预配置的一个值、或预定义的一个值。
- 一种第一终端,其特征在于,包括:处理器和存储器;所述存储器用于存储计算机执行指令,当所述第一终端运行时,所述处理器执行所述存储器存储的所述计算机执行指令,以使所述第一终端执行如权利要求1-16任一项所述的通信方法。
- 一种第二终端,其特征在于,包括:处理器和存储器;所述存储器用于存储计算机执行指令,当所述第二终端运行时,所述处理器执行所述存储器存储的所述计算机执行指令,以使所述第二终端执行如权利要求17-24任一项所述的通信方法。
- 一种通信装置,其特征在于,所述通信装置用来执行权利要求1-24任一项所述的通信方法。
- 一种计算机可读存储介质,其特征在于,包括计算机程序,当其在计算机上运行时,使得所述计算机执行如利要求1-24任一项所述的通信方法。
- 一种通信***,其特征在于,包括第一终端和第二终端;所述第二终端,用于向所述第一终端发送侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;所述第一终端,用于接收来自所述第二终端的所述SCI;在第一时刻或第二时刻启动第一定时器,所述第一时刻关联于所述SCI所占用或所指示的侧行链路的时域资源,所述第二时刻关联于所述第一终端发送的反馈信息所占用的时域资源,所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI,或侧行链路的混合自动重传请求HARQ信息,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听侧行链路的控制信息和/或侧行链路的数据信息。
- 一种通信***,其特征在于,包括第一终端和第二终端;所述第一终端,用于接收来自所述第二终端的侧行链路控制信息SCI,所述SCI用于指示侧行链路的时域资源;所述第二终端,用于向所述第一终端发送所述SCI;在第一时刻启动第一定时器,所述第一时刻关联于SCI所占用或所指示的侧行链路的时域资源,所述第一定时器用于指示在所述第一定时器启动后的至少一个时间单元不监听反馈信息;所述反馈信息包括侧行链路的测量报告、侧行链路的信道状态信息CSI、或侧行链路的混合自动重传请求HARQ信 息。
- 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,当所述计算机程序运行时,使得权利要求1-24中任一项所述通信方法被执行。
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