WO2022151449A1 - Procédé de communication, appareil et système - Google Patents

Procédé de communication, appareil et système Download PDF

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Publication number
WO2022151449A1
WO2022151449A1 PCT/CN2021/072334 CN2021072334W WO2022151449A1 WO 2022151449 A1 WO2022151449 A1 WO 2022151449A1 CN 2021072334 W CN2021072334 W CN 2021072334W WO 2022151449 A1 WO2022151449 A1 WO 2022151449A1
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WO
WIPO (PCT)
Prior art keywords
information
communication device
timer
transmission
harq feedback
Prior art date
Application number
PCT/CN2021/072334
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English (en)
Chinese (zh)
Inventor
刘俊
曾清海
常俊仁
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202180068600.XA priority Critical patent/CN116458259A/zh
Priority to PCT/CN2021/072334 priority patent/WO2022151449A1/fr
Publication of WO2022151449A1 publication Critical patent/WO2022151449A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/23—Manipulation of direct-mode connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication method, device, and system.
  • a discontinuous reception (DRX) mechanism is introduced to control the terminal to monitor the physical downlink control channel (physical downlink control channel, PDCCH) mode.
  • PDCCH physical downlink control channel
  • the terminal can periodically enter the sleep state (sleep mode) at certain times. In the sleep state, the terminal does not need to monitor the PDCCH, but when it needs to monitor, the terminal wakes up from the sleep state (wake up) , so that the terminal can achieve the purpose of saving power.
  • the terminal is not configured with DRX or the terminal does not perform DRX, the terminal will continue to monitor the PDCCH, and the power consumption is high.
  • SL DRX A similar SL DRX is proposed in the sidelink (SL) with the above-mentioned DRX of Uu.
  • the retransmission-related timers include a first timer and a second timer.
  • the first timer is started first, the first timer times out, and then the second timer is started. After the second timer
  • the terminal device is active time. How to start the above-mentioned first timer and/or the second timer for both parties in the SL communication is a technical problem to be solved in the embodiment of the present application.
  • Embodiments of the present application provide a communication method, apparatus, and system, so as to start the first timer and/or the second timer.
  • a communication method including: a first communication device determining first information, where the first information is used to instruct a second communication device to start a first timer in a sidelink SL process corresponding to the first information and/or the second timer, or do not start the first timer and/or the second timer; or, the first information is used to instruct the second communication device to request or Do not request retransmission resources; wherein, the first timer is used to indicate the minimum length of time before the resource configuration information or authorization information expected to be used for SL retransmission arrives at the receiving end, and the second timer is used to indicate that the receiving end receives the received information. the maximum duration required for the resource configuration information or the authorization information retransmitted by the SL; the first communication device sends the first information to the second communication device.
  • the first communication device instructs the second communication device whether to start the first timer and/or the second timer according to whether to request the network device for retransmission resources of the SL process, so that the first communication device communicates with the second communication device.
  • the operations of the first timer and the second timer between the devices can be aligned, so as to avoid packet loss or waste of resources due to invalid monitoring.
  • the first information is used to instruct the second communication device to start the first timer and/or the second timer in the corresponding SL process, including: the first information is used to indicate the the second communication device starts the first timer and/or the second timer in the corresponding SL process when or after the second communication device receives or finishes receiving at least one second information; the second communication device starts the first timer and/or the second timer in the corresponding SL process; The first information is used to instruct the second communication device not to start the first timer and/or the second timer in the corresponding SL process, including: the first information is used to instruct the second communication device to When or after the second communication device receives or finishes receiving the at least one second information, the first timer and/or the second timer is not started in the corresponding SL process.
  • the first information is used to instruct the second communication device to request or not to request retransmission resources for the corresponding SL process, including: the first information is used to instruct the second communication device
  • the communication device requests or does not request retransmission resources for the corresponding SL process when or after the first communication device runs out, sends, or sends the at least one second piece of information.
  • the first information is used to instruct the second communication device to request or not to request retransmission resources for the SL process, including: the first information is used to communicate with the second communication device The device instructs at least one first transmission to request or not to request retransmission resources from the third communication device when or after the at least one second information is used up, sent or sent; or, the first information is used for Instructing the second communication device to send a SL Negative Acknowledgment NACK or an SL Positive Acknowledgment ACK to the third communication device when or after at least one first transmission is used up, sent, or sent out of the at least one second message.
  • the first information is carried in sidelink control information SCI, medium access control control element MAC CE, or radio resource control RRC message.
  • the first information includes at least the serial number or identifier of the SL process.
  • the method further includes: the first communication device receives third information from a third communication device, where the third information is used to indicate to the first communication device that at least one first transmission is in When or after the at least one second information is used up, sent or sent, retransmission resources are requested or not from the third communication device.
  • the third information is carried in an RRC message or downlink control information DCI.
  • the method further includes: the first communication device determines that the first transmission requests or does not request the third communication device when or after the at least one second information is used up, sent or sent. Retransmission resources; the first communication device sends the indication information of the first transmission to the third communication device.
  • the first communication device sending the indication information of the first transmission to the third communication device includes: if the third communication device is the third communication device through an RRC reconfiguration message When a communication device configures the first transmission, the first communication device sends an RRC reconfiguration complete message to the third communication device, where the RRC reconfiguration complete message carries the indication information of the first transmission.
  • the first transmission is the SL radio bearer SLRB, or the SL logical channel LCH, or the SL process.
  • the at least one second information includes: all the second information, or the last second information, or one second information.
  • the at least one second information includes: the at least one second information during the current dynamic scheduling DG or the configuration scheduling CG; or the at least one second information during a DG or CG information.
  • the second information is SCI, or SL transmission, or SL transmission opportunity, or SL authorization, or SL medium access control protocol data unit MAC PDU.
  • the HARQ feedback of the HARQ feedback of the SL process is disabled.
  • a communication method comprising: a second communication device receiving first information from a first communication device, where the first information is used to indicate that the second communication device is in a sidelink SL corresponding to the first information
  • the process starts the first timer and/or the second timer, or does not start the first timer and/or the second timer; or, the first information is used to indicate that the first communication device is
  • the SL process requests or does not request retransmission resources; the second communication device determines, according to the first information, to start the first timer and/or the second timer for the corresponding SL process, or not to start the first timer timer and/or a second timer.
  • the first timer is used to indicate the minimum length of time before the arrival of the resource configuration information or authorization information expected to be used for SL retransmission
  • the second timer is used to indicate that the receiving end receives the resource configuration information of the SL retransmission. or the maximum time required for the authorization information.
  • the first communication device instructs the second communication device whether to start the first timer and/or the second timer according to whether to request the network device for retransmission resources of the SL process, so that the first communication device and the second
  • the operations of the first timer and the second timer between the communication devices can be aligned, so as to avoid packet loss or waste of resources due to invalid monitoring.
  • the first information is carried in the first SCI of the SL process.
  • the first information is carried in any SCI or all SCIs of the SL process.
  • the second communication device determines, according to the first information, to start the first timer and/or the second timer for the corresponding SL process, or not to start the first timer and/or the second timer, comprising: the first information instructing the first communication device to request retransmission resources for the SL process when or after the at least one second information is used up, sent or sent; When or after the second communication device receives or finishes receiving the at least one second piece of information, the first timer and/or the second timer is started in the corresponding SL process.
  • the first information indicates that the first communication device does not request retransmission resources for the corresponding SL process when or after the at least one second information is used up, sent or sent; when the second communication device receives or receives When or after the at least one second information is finished, the first timer and/or the second timer is not started in the corresponding SL process.
  • the first information indication instructs the second communication device to start the first timer and/or the second timer in the SL process corresponding to the first information when or after receiving or after receiving at least one second information;
  • the communication device receives or finishes receiving at least one second piece of information, it starts the first timer and/or the second timer in the corresponding SL process;
  • the SL process corresponding to the first message does not start the first timer and/or the second timer when or after the at least one second message is received; when or after the second communication device receives or finishes receiving the at least one second message , the first timer and/or the second timer is not started in the corresponding SL process.
  • the first information instructs the first communication device to send an SL negative acknowledgment NACK to the third communication device when or after the at least one second information is used up, sent or sent;
  • the first timer and/or the second timer is started in the corresponding SL process.
  • the first information instructs the first communication device to send an SL affirmative ACK to the third communication device when or after at least one second information is used up, sent or sent;
  • the first timer and/or the second timer is not started in the corresponding SL process; optionally, in the above, the first information indicates that the first communication device is the corresponding SL process
  • Requesting or not requesting retransmission resources may be replaced with: the first information instructs the first communication device to send a message to the at least one first transmission when or after the at least one first transmission is used up, sent, or the at least one second information is sent.
  • the third communication device requests or does not request retransmission resources.
  • the first information instructs the second communication device to start or not to start the first timer and/or the second timer in the SL process corresponding to the first information when or after receiving or after receiving at least one second information, which may be replaced by :
  • the first information instructs the second communication device to start or not to start the first timer and/or the second timer in the SL process corresponding to the first information when or after receiving or finishing at least one second information for at least one first transmission. timer.
  • the first information instructs the first communication device to send an SL negative acknowledgement NACK or an SL positive acknowledgement ACK to the third communication device when or after the at least one second information is used up, sent or sent, which may be replaced by the first information
  • the first communication device is instructed to send a SL Negative Acknowledgment NACK or an SL Positive Acknowledgment ACK to the third communication device when or after at least one first transmission has been used up, sent or sent at least one second information.
  • the first information is used to instruct the second communication device to start the first timer and/or the second timer in the corresponding SL process, including: the first information is used to indicate the the second communication device starts the first timer and/or the second timer in the corresponding SL process when or after the second communication device receives or finishes receiving at least one second piece of information; the The first information is used to instruct the second communication device not to start the first timer and/or the second timer in the corresponding SL process, including: the first information is used to instruct the second communication device to When or after the second communication device receives or finishes receiving the at least one second information, the first timer and/or the second timer is not started in the corresponding SL process.
  • the first information is used to instruct the second communication device to request or not to request retransmission resources for the corresponding SL process, including: the first information is used to instruct the second communication device
  • the communication device requests or does not request retransmission resources for the corresponding SL process when or after the first communication device runs out, sends, or sends the at least one second piece of information.
  • the first information is used to instruct the second communication device to request or not to request retransmission resources for the SL process, including: the first information is used to send the second communication
  • the communication device instructs at least one first transmission to request or not to request retransmission resources from the third communication device when or after the at least one second message is used up, sent or sent; Sending a SL NACK or a SL ACK to the third communication device upon or after indicating to the second communication device that at least one first transmission is exhausted, sent or sent the at least one second information.
  • the first information is carried in sidelink control information SCI, medium access control control element MAC CE, or radio resource control RRC message.
  • the first information includes at least the serial number or identifier of the SL process.
  • the at least one second information includes: all the second information, or the last second information.
  • the at least one second information includes: the at least one second information during the current dynamic scheduling DG or the configuration scheduling CG; or the at least one second information during a DG or CG information.
  • the second information is SCI, or SL transmission, or SL transmission opportunity, or SL authorization, or SL medium access control protocol data unit MAC PDU.
  • the HARQ feedback of the HARQ feedback of the SL process is disabled.
  • a communication method comprising: satisfying a first condition, where the first condition is: a first communication device sends a MAC PDU or SCI on a configured SL grant; or, the first communication device receives A physical downlink control channel PDCCH indicating SL transmission from a third communication device; the first communication device starts a third timer when or after sending the SL HARQ corresponding to the first condition to the third communication device, and /or, stop a fourth timer, where the third timer is used to indicate the minimum length of time before the resource configuration information or authorization information expected to be used for SL retransmission arrives, and the fourth timer is used to indicate the receiving end The maximum duration required to receive the resource configuration information or authorization information retransmitted by the SL.
  • the first communication device sends a MAC PDU or SCI on the configured SL grant; or, the first communication device receives a physical downlink control channel from a third communication device indicating SL transmission
  • the PDCCH includes: when the first communication device adopts CG, the first communication device sends a MAC PDU or SCI on the configured SL grant; or, when the first communication device adopts DG, the first communication device sends a MAC PDU or SCI on the configured SL grant; The communication device receives the physical downlink control channel PDCCH indicating SL transmission from the third communication device.
  • the third timer includes a third timer corresponding to the first condition
  • the fourth timer includes a fourth timer corresponding to the first condition
  • the method further includes: the third timer times out; when the second condition is satisfied, the first communication device starts the fourth timer.
  • the second condition includes at least one of the following: the SL HARQ fed back by the first communication device to the third communication device is NACK; NACK feedback from the device; the first communication device failed to send SL data successfully.
  • the SL HARQ fed back by the first communication device to the third communication device is NACK; including: when the SL HARQ feedback corresponding to the first condition is disabled, the first The SL HARQ fed back by the communication device to the third communication device is NACK.
  • the first communication device receives NACK feedback from the second communication device, including: when the SL HARQ feedback corresponding to the first condition is enabled, the first communication device A NACK feedback from the second communication device is received.
  • the failure of the first communication device to send the SL data includes: when the SL HARQ feedback corresponding to the first condition is disabled, the first communication device fails to send the SL data successfully data.
  • a communication method comprising: when a first communication device sends at least one second information to a second communication device, and/or, the first communication device indicates to the second communication device that the requested information has been requested.
  • the first communication device starts the first timer of the SL process, and/or stops all the second timer of the SL process; or, when or after the first communication device sends an affirmative ACK to the third communication device, the first communication device stops running or does not start the first timer of the SL process.
  • the first timer is used to indicate that it is expected to be used for SL replay The minimum duration before the transmitted resource configuration information or authorization information arrives, and the second timer is used to indicate the maximum duration required to receive the resource configuration information or authorization information retransmitted by the SL.
  • the first communication device and the second communication device can start the first timer and the second timer according to the PSFCH resource or HARQ feedback, so as to align the first communication device and the active time of the second communication device, to avoid the situation of packet loss and invalid monitoring, and improve the performance of SL communication.
  • the first communication device indicates to the second communication device that the retransmission resource of the SL process has been requested, or the SL HARQ feedback of the SL process has been sent, including: when all the When or after the first communication device requests the third communication device for retransmission resources of the SL process or sends NACK feedback for the SL process, the first communication device indicates to the second communication device that the request has been made The retransmission resource of the SL process, or the SL HARQ feedback corresponding to the SL process has been sent to the third communication device.
  • the SL HARQ feedback is NACK.
  • the HARQ feedback of the SL process is enabled, when the first timer expires and the first communication device receives NACK feedback from the second communication device when the second timer is started; or, if the HARQ feedback of the SL process is disabled, when the first timer times out, the first communication device starts the second timer.
  • the first communication device is configured to report resources for SL HARQ feedback to the third communication device.
  • the method further includes: when or after the second timer is started, the first communication device sends third information to the third communication device, where the third information is used to indicate The third communication device does not send the SL new transmission or the SL retransmission resource configuration of other SL processes, or does not schedule the SL new transmission or other SLs only during the running period of the second timer. SL retransmission resources for the process.
  • the method further includes: when or after the first communication device sends an ACK to the third communication device, the first communication device sends an ACK to the second communication device indicating the The second communication device stops running or does not start the first timer of the SL process, and/or stops running or does not start the second timer of the SL process.
  • the at least one second information includes: all the second information, or the last second information, or one second information.
  • the at least one second information includes: the at least one second information during the current DG or CG; or the at least one second information during a DG or CG, the The second information includes SCI, or SL transmission, or SL transmission opportunity, or SL grant, or SL MAC PDU.
  • the HARQ feedback of the SL process is disabled.
  • a communication method comprising: when a second communication device receives at least one second piece of information from a first communication device, and/or when the second communication device receives information from the first communication device When or after the information indicating that the retransmission resource of the SL process corresponding to the at least one second information has been requested or the indication of the SL HARQ feedback of the SL process corresponding to the at least one second information has been sent, the second communication The device starts the first timer of the SL process, and/or stops the second timer; or, when the second communication device receives an instruction from the first communication device for instructing the second communication device When or after the information of stopping or not starting the first timer of the SL process, and/or, stopping or not starting the second timer of the SL process, the second communication The device stops running or does not start the first timer and/or the second timer; wherein the first timer is used to indicate the minimum length of time before the arrival of resource configuration information or authorization information expected to be used for SL
  • the SL HARQ feedback is NACK.
  • the method further includes: if the HARQ feedback of the SL process is enabled and the second communication device fails to decode the SL data of the SL process, the first timer expires From time to time, the second communication device starts the second timer; or, if the HARQ feedback of the SL process is disabled, when the first timer expires, the second communication device starts the second timer. second timer.
  • the first communication device is configured to report resources for SL HARQ feedback to the third communication device.
  • the at least one second information includes: all the second information, or the last second information, or one second information.
  • the at least one second information includes: the at least one second information during the current DG or CG; or the at least one second information during a DG or CG, the The second information is SCI, or SL transmission, or SL transmission opportunity, or SL authorization, or SL MAC PDU.
  • the HARQ feedback of the SL process is disabled.
  • a communication method comprising: a first communication device sending at least one second information to a second communication device; the first communication device according to a physical sideline feedback channel PSFCH corresponding to the at least one second information resource or SL HARQ feedback, start the first timer of the SL process corresponding to the at least one second information, and/or stop the second timer of the SL process, and the PSFCH resource is used to transmit the at least one HARQ feedback of the second information; wherein, the first timer is used to indicate the minimum length of time before the resource configuration information or authorization information expected to be used for SL retransmission arrives at the receiving end, and the second timer is used to indicate The maximum time required for the receiver to receive the resource configuration information or authorization information retransmitted by the SL.
  • PSFCH physical sideline feedback channel
  • the first communication device and the second communication device can start the first timer and the second timer according to the PSFCH resource or HARQ feedback, so as to align the first communication device and the active time of the second communication device, to avoid the situation of packet loss and invalid monitoring, and improve the performance of SL communication.
  • the first communication device starts the first timer of the SL process corresponding to the at least one second information according to the PSFCH resource corresponding to the at least one second information , and/or, stopping the second timer of the SL process, comprising: starting the first timer of the SL process with the first time domain symbol of the first communication device in the PSFCH resource, and /or, stop the second timer of the SL process; or, the first communication device starts the first timer of the SL process in the first symbol after the end of the PSFCH resource, and/or, Stop the second timer of the SL process.
  • the first communication device starts the first timer of the SL process corresponding to the at least one second information according to the HARQ feedback corresponding to the at least one second information, and stops the SL
  • the second timer of the process includes: the first communication device receives HARQ feedback corresponding to the at least one second information from the second communication device; the first communication device receives the HARQ feedback During feedback, or after, or after the first time domain symbol, the first timer of the SL process is started, and the second timer of the SL process is stopped.
  • the at least one second information includes: all the second information, or the last second information, or one second information.
  • the at least one second information includes: the at least one second information during the current DG or CG; or the at least one second information during a DG or CG, the The second information is SCI, or SL transmission, or SL transmission opportunity, or SL authorization, or SL MAC PDU.
  • HARQ feedback of the SL process is enabled.
  • a communication method comprising: a second communication device receiving at least one second piece of information from a first communication device; the second communication device feeding back according to a PSFCH resource or HARQ corresponding to the at least one second piece of information , start the first timer of the SL process corresponding to the at least one second information, and/or stop the second timer of the SL process, and the PSFCH resource is used to transmit the HARQ of the at least one second information feedback; wherein, the first timer is used to indicate the minimum length of time before the resource configuration information or authorization information expected to be used for SL retransmission reaches the receiving end, and the second timer is used to indicate that the receiving end receives the SL The maximum time required to retransmit resource configuration information or authorization information.
  • the second communication device starts the first timer of the SL process corresponding to the at least one second information according to the PSFCH resource corresponding to the at least one second information, and/or, Stopping the second timer of the SL process includes: starting the first timer of the SL process by the second communication device in the first time domain symbol in the PSFCH resource, and stopping the first timer of the SL process. a second timer; or, the second communication device starts the first timer of the SL process in the first symbol after the end of the PSFCH resource, and/or stops the second timer of the SL process device.
  • the second communication device starts the first timer of the SL process corresponding to the at least one second information according to the HARQ feedback corresponding to the at least one second information, and stops the SL
  • the second timer of the process includes: the second communication device sends the HARQ feedback of the at least one second information to the first communication device; when the second communication device sends the HARQ feedback, or after , or after the first time domain symbol, start the first timer of the SL process, and stop the second timer of the SL process.
  • the at least one second information includes: all the second information, or the last second information.
  • the at least one second information includes: the at least one second information during the current DG or CG; or, the at least one second information during a DG or CG, the The second information is SCI, or SL transmission, or SL transmission opportunity, or SL authorization, or SL MAC PDU.
  • HARQ feedback of the SL process is enabled.
  • the SLRB is an SL data radio bearer DRB, or an SL signaling radio bearer SRB.
  • the SL process includes: an SL hybrid automatic repeat request (HARQ) process.
  • HARQ SL hybrid automatic repeat request
  • a communication method comprising: when the communication device is configured with SL discontinuous reception DRX, and the communication device is in the SL active time, the communication device monitors the SCI corresponding to at least one SL DRX; and/or, when When the SCI indicates one or the current last SL transmission, SL data transmission, SL transmission opportunity, SL transmission of transmission opportunity, SL authorization, or SL MAC PDU, the communication device starts the first SL process corresponding to the SCI.
  • timer stop the second timer on the corresponding SL process; and/or, if the SCI indicates a new SL transmission or SL data transmission, the first symbol after the SCI is received Or the time slot starts or restarts the third timer on the SLDRX corresponding to the SCI.
  • the reason for the occurrence of "when receiving a new SL grant from SL connection #1 during the inactive time of its SL connection #1" may be that the Rx missed the SCI of SL connection #1 before, causing only the Tx to extend the activity. time, and Rx does not stretch the active time, so that the active time is not aligned between Tx-Rx.
  • Tx and Rx can restore the alignment activity time as soon as possible, and reduce the occurrence of packet loss in Rx.
  • the SL DRX in the SCI corresponding to at least one SL DRX monitored by the communication device may be an SL connection, or an SL DRX corresponding to the SL connection.
  • the SCI is a first-level SCI, or, PSCCH, or, a first-level SCI and a second-level SCI.
  • the current last SL transmission, SL data transmission, SL transmission opportunity, SL transmission of transmission opportunity, SL grant or SL MAC PDU may be the last SL transmission during the current DG or CG period , SL Data Transmission, SL Transmission Opportunity, SL Transmission of Transmission Opportunity, SL Grant, or SL MAC PDU.
  • the communication device is active at the time of SL, including: if Uu and SL share the same MAC entity, and at least one SL connection or SL DRX is active at time; or if Uu and SL do not share the same MAC entity, and the SL MAC entity is at active time.
  • the communication device starts the first timer on the SL process corresponding to the SCI, and stops the second timer on the corresponding SL process, including: the communication device is carrying the SL HARQ feedback After the transmission of the SCI is completed, start the first timer on the SL process corresponding to the SCI, and/or stop the second timer on the corresponding SL process.
  • the communication device when it is in the SL active time, it includes: when at least one SL DRX of the communication device is in the active time; the monitoring of the SCI corresponding to the at least one SL DRX includes: Monitor any/all SCIs corresponding to SL DRX.
  • the communication device when it is in the SL active time, it includes: at least one SL connection or SL DRX duration timer onduration timer, sidelink DRX duration timer drx-OnDurationTimerSL , active timer inactivity timer, sidelink DRX active period timer drx-InactivityTimerSL or retransmission timer retansmission timer, sidelink DRX retransmission timer drx-RetransmissionTimerSL is running, or, at least one SL process is running The retransmission timer retransmission timer, or the sidelink DRX retransmission timer drx-RetransmissionTimerSL is running, or is in the time domain resource of the energy-saving resource configuration of SL broadcast/multicast; the monitoring of at least one SL DRX corresponds to SCI, including: monitoring any/all SCIs corresponding to SL DRX.
  • the monitoring of the SCIs corresponding to any/all SL DRXs includes: the communication device monitoring the SCIs that it can monitor and sent to itself.
  • the monitoring of the SCI corresponding to at least one SL DRX includes: monitoring the SL DRX Or SL connection using SCI on carrier/frequency point.
  • the monitoring of the SCI corresponding to at least one SL DRX includes: monitoring the SL DRX or SL-connected SCI.
  • the SL process further includes: an SL HARQ process.
  • the communication device is configured with SL discontinuous reception DRX.
  • an embodiment of the present application provides a communication apparatus, and the apparatus may be a communication device or a chip in the communication device.
  • the device has the function of implementing each implementation method in the first aspect to the eighth aspect above. This function can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • an embodiment of the present application provides a communication device, including a processor and a memory; the memory is used to store computer-executed instructions, and when the device is running, the processor executes the computer-executed instructions stored in the memory, so that the The apparatus performs the functions of the respective implementation methods in the above-mentioned first to eighth aspects.
  • an embodiment of the present application provides a communication apparatus, including a unit or means for performing each step of each implementation method of the above-mentioned first to eighth aspects.
  • an embodiment of the present application provides a communication device, including a processor and an interface circuit, where the processor is configured to communicate with other devices through the interface circuit, and execute the implementation methods of the first to eighth aspects above.
  • the processor includes one or more.
  • an embodiment of the present application provides a communication device, including a processor, which is connected to a memory and used to call a program stored in the memory to execute the implementation methods of the first to eighth aspects above.
  • the memory may be located within the device or external to the device.
  • the processor includes one or more.
  • embodiments of the present application further provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium runs on a computer, each of the above first to eighth aspects The implementation method is executed.
  • an embodiment of the present application further provides a computer program product, the computer product includes a computer program, and when the computer program runs, the implementation methods of the above-mentioned first to eighth aspects are executed.
  • an embodiment of the present application further provides a chip system, including: a processor configured to execute the implementation methods of the foregoing first to eighth aspects.
  • an embodiment of the present application further provides a communication system, including a first communication device for executing any implementation method of the foregoing first aspect, and/or a first communication device for executing any implementation method of the foregoing second aspect 2.
  • Communication equipment including a first communication device for executing any implementation method of the foregoing first aspect, and/or a first communication device for executing any implementation method of the foregoing second aspect 2.
  • an embodiment of the present application further provides a communication system, including a first communication device for executing any implementation method of the above fourth aspect, and/or a first communication device for executing any implementation method of the above second aspect Five communication equipment.
  • an embodiment of the present application further provides a communication system, including a first communication device for executing any implementation method of the sixth aspect, and/or a first communication device for executing any implementation method of the seventh aspect. 2. Communication equipment.
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG. 3 is a flowchart of a communication method provided by an embodiment of the present application.
  • Fig. 4 is another flowchart of the communication method provided by this early request embodiment
  • FIG. 5 is another schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 7 is another schematic structural diagram of a communication apparatus provided by an embodiment of the present application.
  • FIG. 1 shows a communication system 100 to which the embodiments of the present application can be applied.
  • the communication system 100 may be a long term evolution (long term evolution, LTE) system, a fifth generation mobile communication ( 5th generation, 5G) system, a new radio (new radio, NR) system, and may also be a machine to machine communication (machine to machine communication) system. machine, M2M) system, the sixth-generation communication system that will evolve in the future, etc.
  • the communication system 100 may include: one or more network devices 101, two or more terminal devices 102, and a core network (not shown).
  • the communication interface between the network device 101 and the terminal device 102 is called a Uu air interface.
  • the network device 101 can be used to communicate with the terminal device 102 through a wireless interface (such as a Uu air interface) under the control of a network device controller (not shown), such as a base station controller (base station controller, BSC).
  • a network device controller not shown
  • the link through which the terminal device 102 sends data to the network device 101 is called an uplink (uplink, UL)
  • the link through which the terminal device 102 receives data sent by the network device 101 is called a downlink (downlink, DL).
  • the network device controller may be part of the core network or may be integrated into the network device 101 .
  • Communication between the terminal device 102 and the terminal device 102 may also be performed through a wireless interface (eg, a PC5 port).
  • a wireless interface eg, a PC5 port
  • the link for transmitting data between the terminal device 102 and the terminal device 102 is called a sidelink (SL).
  • the terminal device 102 is within the coverage area of an evolved universal terrestrial radio access network (E-UTRAN)
  • the Uu interface can be used under the control of the cellular network. Regardless of whether it is within the E-UTRAN coverage area, the terminal device 102 can use the PC5 interface for SL communication.
  • the SL communication may be point-to-point communication between two terminal devices 102, or may be multicast communication performed by a group of two or more terminal devices 102, or the like.
  • V2X refers to connecting vehicles to the Internet or connecting vehicles to a network. It has 4 different types of applications, namely vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle Vehicle to network (V2N), vehicle to pedestrian (V2P). Through these four applications, vehicles, roadside infrastructure, application servers and pedestrians collect, process and share status information of surrounding vehicles and environments to provide more intelligent services such as unmanned driving, autonomous driving (automated driving/ADS), driver assistance (ADAS), intelligent driving (intelligent driving), connected driving (connected driving), intelligent network driving (intelligent network driving), car sharing (car sharing), etc.
  • V2V vehicle to vehicle
  • V2I vehicle to infrastructure
  • V2N vehicle Vehicle to network
  • V2P vehicle to pedestrian
  • vehicles, roadside infrastructure, application servers and pedestrians collect, process and share status information of surrounding vehicles and environments to provide more intelligent services such as unmanned driving, autonomous driving (automated driving/ADS), driver assistance (ADAS), intelligent driving (intelligent driving), connected driving (connected driving), intelligent
  • the terminal device 102 may be a vehicle-mounted terminal.
  • the vehicle-mounted terminal and the vehicle-mounted terminal exchange data through SL, such as vehicle position, vehicle speed, driving direction and other data indicating vehicle dynamics.
  • the in-vehicle terminal A may send data to another in-vehicle terminal B through the SL, where the data is used to indicate the driving state of the vehicle in which the in-vehicle terminal A is located.
  • the in-vehicle terminal B receives the data, it can display the content expressed by the data in the user interface.
  • the content displayed in the user interface may be "the license plate number of the vehicle behind ("FAF787”), the driving operation being performed by the vehicle behind (“the vehicle behind FAF787 is performing an overtaking operation”), the current speed of the vehicle behind (“FAF787 80km/h”), etc.
  • the incidence of traffic accidents can be reduced and driving safety can be enhanced.
  • the wireless communication system 100 shown in FIG. 1 is only for illustrating the technical solutions of the present application more clearly, and does not constitute a limitation on the present application.
  • Those skilled in the art know that with the evolution of the network architecture and new services When a scenario occurs, the technical solutions provided in this application are also applicable to similar technical problems.
  • an application scenario is provided: as shown in Figure 2, when a hybrid automatic repeat request (HARQ) feedback attribute of a certain SL process is disabled (disabled) Time.
  • HARQ hybrid automatic repeat request
  • the receiving user equipment receive user equipment, RX UE
  • TX UE transmit user equipment
  • the timers related to retransmission include a first timer and a second timer.
  • the RX UE does not start the first timer on the SL DRX, or even if the first timer is started, when the first timer times out, the second timer is not started.
  • the disadvantages are as follows: if the TX UE reports NACK to the base station (requesting new resources for blind retransmission), the TX UE and the base station will start the first timer of the SL process on the Uu DRX, and when the first timer times out, Start the second timer.
  • the base station may schedule SL new transmission grants or SL retransmission grants of other SL processes during the running period of the second timer, while the RX UE will be in a sleep state because the second timer is not started, and cannot Receive the above data packets, resulting in packet loss.
  • the RX UE starts the first timer on the SDL DRX, and when the first timer times out, starts the second timer.
  • the disadvantages are as follows: if the TX UE reports ACK to the base station (without requesting new resources for blind retransmission), the TX UE and the base station will not start the second timer on the Uu DRX, which may cause the SL to start the second timer for Ineffective listening wastes power.
  • the embodiments of the present application provide the following solutions: the TX UE may send indication information to the RX UE according to whether to request retransmission resources from the base station, and the indication information may indicate whether the RX UE starts the above-mentioned first timer and /or the second timer, or may indicate whether the TX UE requests retransmission resources from the base station, etc., or may indicate the TX to send SL HARQ feedback information of NACK or SL ACK to the base station.
  • Embodiment 1 and Embodiment 3 below.
  • the embodiment of the present application also provides the following Embodiment 2, Embodiment 4 and Embodiment 5.
  • Embodiment 2 can be applied to the scenario of starting the third timer and the fourth timer in Uu DRX; Embodiment 4 It can be applied to a scenario in which the HARQ feedback of the SL process is enabled; the fifth embodiment can be applied to when SL DRX is enabled, for any SL connection, under what conditions can the SCI and/or the SL connection be processed. Or stop or start the corresponding timer on the SL DRX.
  • a terminal device which may be referred to as a terminal for short, is a device with a wireless transceiver function.
  • Terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; can also be deployed on water (such as ships, etc.); can also be deployed in the air (such as aircraft, balloons and satellites, etc.).
  • the terminal device can be a mobile phone (mobile phone), a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device, industrial control ( Wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation security (transportation) Wireless terminal equipment in safety), wireless terminal equipment in smart city (smart city), wireless terminal equipment in smart home (smart home), and may also include user equipment (user equipment, UE) and the like.
  • VR virtual reality
  • AR augmented reality
  • industrial control Wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, transportation security (transportation) Wireless terminal equipment in safety
  • wireless terminal equipment in smart city smart city
  • wireless terminal equipment in smart home smart home
  • UE user equipment
  • the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5th generation (5G) networks or future evolved public land mobile communication networks (public terminal equipment in land mobile network, PLMN), etc.
  • Terminal equipment may also sometimes be referred to as terminal, access terminal equipment, vehicle terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, terminal equipment, wireless communication equipment, UE proxy or UE device, etc.
  • Terminal devices can also be stationary or mobile. This embodiment of the present application does not limit this.
  • the device for realizing the function of the terminal may be a terminal; it may also be a device capable of supporting the terminal to realize the function, such as a chip system, and the device may be installed in the terminal.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the device for realizing the functions of the terminal is a terminal, and the terminal is a UE as an example to describe the technical solutions provided by the embodiments of the present application.
  • a network device may be an access network device, and an access network device may also be called a radio access network (RAN) device, which is a device that provides wireless communication functions for terminal devices.
  • Access network equipment includes, but is not limited to, the next generation base station (generation nodeB, gNB), evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), node B ( node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseband unit) , BBU), sending and receiving point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), mobile switching center, etc.
  • generation nodeB, gNB next generation base station
  • eNB evolved node B
  • RNC radio network controller
  • node B node B, NB
  • BSC base station controller
  • the access network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a distributed unit (DU) in a cloud radio access network (cloud radio access network, CRAN) scenario, or a network
  • the device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network, and the like.
  • a terminal device can communicate with multiple access network devices of different technologies. For example, a terminal device can communicate with an access network device that supports long term evolution (LTE), and can also communicate with an access network device that supports 5G. , it can also be dual-connected with LTE-enabled access network equipment and 5G-enabled access network equipment.
  • LTE long term evolution
  • 5G 5G-enabled access network equipment
  • the embodiments of the present application are not limited.
  • the apparatus for implementing the function of the network device may be a network device; it may also be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device.
  • the device for implementing the functions of the network equipment is the network equipment, and the network equipment is a base station as an example to describe the technical solutions provided by the embodiments of the present application.
  • the TX UE may, for each SL data, such as a media access control control element protocol data unit (media access control protocol data unit, MAC PDU) or a transport block (transport block) transmitted from the TX UE to the RX UE , TB) block, set up a SL HARQ process. That is, one SL HARQ process is associated with one SL data, and the SL data can be stored in the SL HARQ buffer associated with the SL HARQ process.
  • An SL HARQ process may maintain a state variable CURRENT_SL_TX_NB, which is used to indicate the number of transmissions of SL data associated with the SL HARQ process.
  • CURRENT_SL_TX_NB can be initialized to 0.
  • the HARQ feedback resource of the SL HARQ process associated with one SL data can be used by the RX UE to send the HARQ feedback of the SL HARQ process to the TX UE.
  • the HARQ feedback resource is a physical sidelink feedback channel (PSFCH) resource, which can be used to carry the RX UE to send HARQ feedback to the TX UE.
  • the HARQ feedback can be used to indicate whether the reception of one transmission of the SL HARQ process is successful or not, that is, whether the reception of one transmission of the SL data associated with the SL HARQ process is successful or not. If the HARQ feedback is ACK, it may indicate that the reception of one transmission of the SL HARQ process is successful; if the HARQ feedback is NACK, it may indicate that the reception of one transmission of the SL HARQ process was unsuccessful.
  • the TX UE When the TX UE is in the radio resource control (radio resource control, RRC) connected state, if Uu DRX is configured. Then, when the TX UE is in the active time, it can monitor the physical downlink control channel (PDCCH).
  • PDCCH physical downlink control channel
  • One PDCCH may be used to schedule one transmission of the SL data.
  • the first transmission may be an initial transmission of the SL data, or may be a retransmission of the SL data, such as the second transmission, the third transmission, and so on.
  • the one transmission may include one or more SL transmission opportunities.
  • the configuration authorization means that the uplink transmission of the terminal device does not require scheduling by the network device, and the terminal device performs the uplink transmission according to the configuration information.
  • Configuring grant transmission also known as grant free (GF) or scheduling-free uplink transmission.
  • GF grant free
  • configuration authorization of type 1 There are two types of configuration authorization, namely configuration authorization of type 1 and configuration authorization of type 2. The difference between the two is that all parameters in the configuration authorization of type 1 are pre-configured by the network device. Therefore, when the terminal device uses the configuration authorization of type 1 to send uplink service data, it can directly use the parameters configured by the network device. , no additional scheduling information is required. However, when the terminal device uses the configuration authorization of type 2 to send uplink service data, it needs to receive an additional trigger to send information before it can perform uplink data transmission.
  • the network device When the network device performs dynamic authorization (also known as dynamic scheduling), it indicates the time-frequency resource location and other information of the scheduled transmission resources of the terminal device through downlink control information (DCI).
  • DCI downlink control information
  • Resource information of the transmission data for example, time domain resource information and/or frequency domain resource information.
  • the transmission data may be data received or sent by the terminal device, and the like.
  • the resources allocated by the base station through dynamic scheduling are valid once, that is, the resources allocated by the base station for the terminal through the DG can only be used once, but a DG scheduling on Uu can include one or more transmission opportunities, that is, one indicating SL transmission.
  • One or more SL transmission opportunities may be indicated in the DCI, where each transmission opportunity may be understood as a grant.
  • the first timer and the second timer are timers in the SL DRX, and the first timer is used to indicate the minimum length of time before the resource configuration information or authorization information expected to be used for SL retransmission reaches the receiving end, that is,
  • the value of the first timer can be "the minimum length of time before the resource configuration information or authorization information expected to be used for SL retransmission reaches the receiving end"; the second timer is used to indicate that the receiving end receives the resource configuration of SL retransmission.
  • the maximum duration required for the information or authorization information that is, the value of the second timer may be "the maximum duration until the receiving end receives the resource configuration information or the authorization information retransmitted by the SL".
  • the first timer and the second timing may be referred to as sl-drx-HARQ-RTT-Timer and sl-drx-RetransmissionTimer, respectively.
  • the third timer and the fourth timer are timers in Uu DRX, and the third timer is used to indicate the minimum length of time before the arrival of the resource configuration information or authorization information expected to be used for SL retransmission, that is, Said, the value of the third timer can be "the minimum length of time before the resource configuration information or authorization information expected to be used for SL retransmission arrives at the receiving end"; the fourth timer is used to indicate that the SL retransmission is received
  • the maximum duration required for the resource configuration information or the authorization information that is, the value of the fourth timer may be "the maximum duration until the receiving end receives the resource configuration information or the authorization information retransmitted by the SL".
  • the third timer and the fourth timer may be referred to as drx-HARQ-RTT-TimerSL and drx-RetransmissionTimerSL, respectively.
  • the SL connection may include at least one of the following: SL connection, SL link, SL unicast connection, or SL multicast connection, and the like.
  • SL DRX may include SL unicast DRX, SL multicast DRX, or SL broadcast DRX, etc.
  • At least one (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple .
  • words such as “first” and “second” are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that the words “first”, “second” and the like do not limit the quantity and execution order, and the words “first”, “second” and the like are not necessarily different.
  • Embodiment 1 of the present application provides a communication method, which includes: a first communication device determines first information, where the first information is used to instruct a second communication device to start a first timer and/or a second timing in a corresponding SL process or not start the first timer and/or the second timer; or, the first information is used to instruct the second communication device to request or not to request retransmission resources for the corresponding SL process; the first The communication device sends the first information to the second communication device.
  • the first communication device is a TX UE and the second communication device is an RX UE as an example for description.
  • the method includes at least:
  • Step 300 The TX UE determines the first information.
  • the TX UE may determine the first information according to whether to request the base station for retransmission resources of the corresponding SL process. For example, if the TX UE requests the base station for retransmission resources of the corresponding SL process, the first information is used to instruct the RX UE to request retransmission resources in the SL process corresponding to the first information; if the TX UE does not request the base station for the corresponding retransmission resources Retransmission resources of the SL process, the first information is used to indicate that the RX UE does not request retransmission resources in the SL process corresponding to the first information.
  • the first information is used to instruct the RX UE to start the first timer and/or the second timer in the SL process corresponding to the first information. At least one; if the TX UE does not request the base station for retransmission resources of the corresponding SL process, the first information is used to instruct the RX UE not to start the first timer and/or the second timer in the SL process corresponding to the first information timer.
  • Step 301 The TX UE sends the first information to the RX UE.
  • the first information may be carried in an SCI, a media access control control element (media access control control element, MAC CE), or an RRC message.
  • the first information may include the number or identifier of the corresponding SL process.
  • the number or identifier is used to identify the SL process, for example, the number or identifier of the SL process may be the number (number) or the identity document (ID) of the SL HARQ process, or the like.
  • the SL process is used as an example for description.
  • "SL process” may also be replaced with "SL HARQ process”.
  • the SL process and the SL HARQ process can be replaced with each other.
  • Step 302 According to the first information, the RX UE enables or disables the first timer and the second timer in the SL process corresponding to the first information.
  • the above step 302 is optional.
  • the RX UE may, according to the first information, It is sufficient to start the first timer and/or the second timer in the corresponding SL process.
  • the RX UE may perform the following operations: the RX UE determines whether the TX UE requests retransmission resources for the corresponding SL process according to the above-mentioned first information ; The RX UE determines whether to start the first timer and/or the second timer according to whether the TX UE requests retransmission resources for the corresponding SL process. For example, when it is determined that the TX UE requests retransmission resources for the corresponding SL process, the RX UE starts the first timer and/or the second timer of the SL process. Or, when it is determined that the TX UE is a corresponding SL process and does not request retransmission resources, the RX UE no longer starts or stops running the first timer and/or the second timer.
  • starting the first timer and/or the second timer for the TX UE or the RX UE may include: starting the first timer; optionally, if the second timer is currently running Running, you can also stop the second timer that is running. When the first timer times out, the second timer is started and so on.
  • the TX UE or RX UE not to start or stop running the first timer and/or the second timer, it may include: judging whether the first timer and/or the second timer is currently running; if it is running, stop Run the first timer and/or the second timer. If not running, the first timer and/or the second timer, etc. are not started any more.
  • the TX UE instructs the RX UE whether to start the first timer and/or the second timer according to whether to request the base station for the retransmission resources of the SL process, so that the first timer between the TX UE and the RX UE is set.
  • the operation of the second timer can be aligned, so as to avoid packet loss or waste of resources by invalid monitoring.
  • the HARQ feedback of the SL process in the above-mentioned embodiment shown in FIG. 1 is disabled. That is, when the RX UE receives the SL data sent by the TX UE, the RX UE does not feed back HARQ feedback to the TX UE. There is currently no relevant solution for the RX UE on how to start the corresponding first timer and second timer related to HARQ retransmission.
  • the TX UE indicates whether the RX UE starts the first timer and the second timer according to whether to request the base station for the retransmission resource of the SL process corresponding to the SL data.
  • the TX UE requests the base station for the retransmission resources of the SL process, it means that the base station will subsequently allocate the retransmission resources of the SL process to the TX UE, and the TX UE will start the first timer, and when the first timer times out, Start the second timer to ensure that within the active time, it can receive the PDCCH sent by the base station for scheduling the retransmission resources of the SL process.
  • the TX UE also instructs the RX UE to start the first timer of the SL process, and when the first timer expires, the second timer is started, so as to ensure that the RX UE can receive the SL sent by the TX UE within the active time.
  • SL data of the process, etc. so that the RX UE can successfully receive the SL data of the SL process within the active time, and improve the SL communication performance. or,
  • the base station will not allocate retransmission resources to the TX UE, and the TX UE will not send SL data to the RX UE.
  • the TX UE can instruct the RX UE not to start or stop running the first timer and the second timer of the SL process, which can prevent the RX UE from wasting resources due to invalid monitoring caused by starting the second timer.
  • the above-mentioned first information may be used to instruct the RX UE to start the first timer and/or the second timer in the corresponding SL process when or after the RX UE receives or finishes at least one second information.
  • the first information is used to instruct the RX UE not to start the first timer and/or the second timer in the corresponding SL process when or after the RX UE receives or finishes receiving at least one second information.
  • the above-mentioned at least one second information includes: all the second information, or the last second information, or one second information.
  • the second information is SCI, or SL transmission, or SL transmission opportunity, or SL authorization, or SL MAC PDU.
  • the at least one second information includes: at least one second information during the current DG or CG. Or, at least one second information during a DG or CG.
  • the TX UE may send the first information to the RX UE in advance, and the first information may be carried in RRC, MAC CE or SCI. That is, the TX UE can send RRC, MAC CE or SCI to the RX UE, and the above-mentioned message or information can carry the first information.
  • the first information may be used to indicate whether the RX UE starts the first timer and/or the second timer of the SL process corresponding to the first information when the RX UE receives or finishes receiving at least one second message. Afterwards, the TX UE may transmit at least one second information to the RX UE.
  • the RX UE may start or not start the first timer and/or the second timer when or after receiving or finishing the at least one second information according to the above-mentioned first information.
  • the at least one second information includes multiple pieces of second information
  • the above-mentioned RX UE receives at least one second information, which generally means that the RX UE receives the first second information in the above-mentioned at least one second information.
  • the at least one second information includes a plurality of second information
  • the above-mentioned RX UE has finished receiving the at least one second information, which generally means that the RX UE has received the last second information in the above-mentioned at least one second information.
  • the above-mentioned RX UE receives at least one second information, which may refer to the time when the RX UE starts to receive the second information, and the above-mentioned RX UE has received at least one second information
  • the second information may refer to the time when the RX UE finishes receiving the second information.
  • the above-mentioned at least one second information includes all SL transmission opportunities, SL grants or MAC PDUs during the current DG or CG period as an example, a possible implementation of the above example may be: TX UE can use RRC, MAC Or RRC and other messages indicate to the RX UE whether to start the first timer/second timer for the corresponding SL process when or after all SL transmission opportunities, SL grants or MAC PDUs during the current DG or CG period are received or received. .
  • the TX UE instructs the RX UE to start the first timer/second timer corresponding to the SL process, it means that the TX UE will request the base station for retransmission resources of the SL process under corresponding circumstances. If the TX UE instructs the RX UE not to start the first timer/second timer of the corresponding SL process, it means that the TX UE will not request the base station for retransmission resources of the SL process under the corresponding situation.
  • the above at least one second information is the last SL transmission opportunity during the current CG or DG period, the SL grant or the SCI of the MAC PDU as an example, a possible implementation of the above example 1 may be: the TX UE can pass the SCI , MAC CE or RRC message indicates to the RX UE whether the corresponding SL HARQ process is started when or after the RX UE receives or completes the SCI indicating the last SL transmission opportunity, SL grant or MAC PDU during the current DG or CG period first timer/second timer.
  • the above-mentioned first information may instruct the RX UE to request or not to request retransmission resources for the corresponding SL process when or after the TX UE runs out, transmits, or transmits the at least one second information.
  • the TX UE sends first information to the RX UE in advance, where the first information is used to instruct the RX UE when the TX UE runs out of, sends or finishes sending at least one second piece of information Or, request or not request retransmission resources for the SL process corresponding to the first information.
  • the TX UE sends at least one second information to the RX UE.
  • the RX UE receives the at least one second information, if it is determined that the TX UE has requested the base station for retransmission resources corresponding to the SL process when or after the at least one second information is used up, sent or sent, then the RX UE is started.
  • the first timer and/or the second timer of the SL process otherwise, do not start or stop running the first timer and/or the second timer of the SL process.
  • sending or sending at least one second information it can be understood as follows: since the TX UE may perform corresponding operations according to the at least one second information, the above-mentioned exhaustion of at least one second information, it can be considered that the second information The relevant processing performed is completed. While sending at least one piece of second information can be considered that when at least one piece of second information includes multiple pieces of second information, it is generally regarded as sending the first second piece of information among the aforementioned multiple pieces of second information.
  • the TX UE After the at least one second information is sent, it can be considered that when the at least one second information includes multiple pieces of second information, the TX UE has finished sending the last second piece of second information among the multiple pieces of second information.
  • the at least one second information includes one second information
  • the above-mentioned sending of the at least one second information may be regarded as the time to start sending the second information, and the above-mentioned sending of the at least one second information may be regarded as the completion of the sending of the second information. time of the second message.
  • the above-mentioned at least one second information is all SL transmission opportunities, SL grants or MAC PDUs during the current DG or CG period.
  • the RRC indicates to the RX UE whether to start retransmission resources for the corresponding SL HARQ process when or after the TX UE has used up, sent or sent all SL transmission opportunities, SL grants, or MAC PDUs during the current DG or CG period.
  • the above-mentioned first information may be used to indicate to the RX UE that at least one first transmission requests or does not request retransmission resources from the base station when or after the at least one first transmission is used up, sent, or sent out of the at least one second information;
  • the first information is used to indicate to the RX UE that at least one first transmission sends SLNACK or SL ACK to the base station when or after the at least one first transmission is used up, sent, or the at least one second information is sent.
  • the TX UE sends a SL NACK to the base station, it means that it requests the base station for retransmission resources, and the RX UE can start the first timer and/or the second timer.
  • the TX UE sends a SL ACK to the base station, it means that it does not request retransmission resources from the base station, and the RX UE may stop running or not start the first timer and/or the second timer, etc.
  • the TX UE may be related to transmission.
  • the transmission may include an SL radio bearer (RB), or an SL logical channel (logical channel, LCH), or an SL process (process). That is, not all transmissions, the TX UE will request retransmission resources from the base station. For example, if transmission A is used to transmit at least one second information, after the TX UE sends at least one second information to the RX UE, if transmission A is preconfigured to request retransmission resources from the base station, the TX UE may request the base station for the retransmission resource. at least one retransmission resource of the second information, and retransmitting the at least one second information to the RX UE using the retransmission resource.
  • RB SL radio bearer
  • LCH SL logical channel
  • process process
  • the base station may pre-configure for the TX UE which transmissions need to request retransmission resources from the base station, or which transmissions do not need to request retransmission resources from the base station.
  • the TX UE may receive third information from the base station, the third information indicating to the TX UE whether to request or not to request a repeat of the at least one first transmission to the base station when or after the at least one first transmission is used up, sent, or after the at least one second information is used up. transmit resources.
  • the third information may be carried in an RRC message, or DCI, etc., which is not limited.
  • the above-mentioned base station sends the first transmission to the TX UE.
  • the base station indicates to the TX UE when each SLRB, SL LCH or HARQ process has used up, sent or sent all SL transmission opportunities, SL grants or MAC PDUs during the current DG or CG, or After that, whether to request retransmission resources from the base station.
  • the above-mentioned SLRB may include an SL data radio bearer (data resource bearer, DRB) or an SL signaling radio bearer (signal resource bearer, SRB), and the like.
  • the RRC reconfiguration message sent by the base station to the TX UE may carry the above-mentioned indication of each SLRB or SL LCH, and carry the above-mentioned indication of each SL HARQ process through DCI.
  • the TX UE may determine that the first transmission requests or does not request retransmission resources from the base station when or after at least one second information is used up, sent or sent, and the TX UE sends the indication information of the first transmission to the base station, Notify the base station.
  • the TX UE may send an RRC reconfiguration complete message to the base station, where the RRC reconfiguration complete message may carry the indication information of the first transmission.
  • the above-mentioned indication information of the first transmission is used to indicate the first transmission to the base station, and the above-mentioned indication information of the first transmission may be an identifier or a serial number of the first transmission, or the like. For example, it may be the ID of the SLRB, the ID of the SLLCH, or the ID of the HARQ process.
  • the base station may determine, according to the indication information of the first transmission, that the terminal device needs to request transmission of at least one second information of the retransmission resource.
  • the base station can determine whether the transmission of the currently requested retransmission resource has been reported in advance.
  • the current request is illegal, and retransmission resources are no longer allocated for the second information.
  • the above TX UE determines that the first transmission is useful
  • An implementation manner of requesting or not requesting retransmission resources from the base station when or after finishing, sending or sending at least one second information may be: the TX UE determines which SLRB, SL LCH or HARQ processes are running out, sending Or when all transmission opportunities, SL grants, and MAC PDUs in the current DG or CG period are sent or after, it is necessary to request retransmission resources from the base station, and send the indication information of each SLRB, each SL LCH or HARQ process to the base station.
  • the TX UE can send the RRC reconfiguration complete message to the base station, and the RRC reconfiguration completes message.
  • the configuration complete message carries the above-mentioned indication of each SLRB or SLLCH.
  • the TX UE adopts the SLRB or SL LCH configured by itself, the TX UE does not need to send the above message to the base station.
  • the solution in the foregoing Embodiment 1 can be applied to a scenario where the HARQ feedback of the SL process is disabled.
  • the first timer and the second timer in the first embodiment may be the first timer and the second timer in the SLDRX.
  • the RX UE can avoid packet loss on the SL because the second timer is not started, or when the SL HARQ feedback is not enabled. If necessary, start the second timer to monitor the SCI ineffectively and waste power consumption.
  • the second embodiment of the present application provides a communication method, which at least includes: when a first condition is satisfied, the first communication device starts a third timer when or after sending the SL HARQ for the first condition to a third communication device, Stop the fourth timer.
  • the third timer is used to indicate the minimum length of time before the resource configuration information or authorization information expected to be used for SL retransmission arrives, and the fourth timer is used to indicate that the resource configuration information or authorization information of SL retransmission is received. maximum time required.
  • the third timer includes a third timer corresponding to the first condition
  • the fourth timer includes a fourth timer corresponding to the first condition.
  • the first condition includes: the first condition is: the first communication device sends a MAC PDU or SCI on the configured SL authorization; or, the first communication device receives a physical message indicating SL transmission from the third communication device Downlink control channel PDCCH.
  • the first condition is: the first communication device sends a MAC PDU or SCI on the configured SL authorization; or, the first communication device receives a physical message from a third communication device indicating SL transmission
  • the downlink control channel PDCCH includes: when the first communication device adopts CG, the first communication device sends a MAC PDU or SCI on the configured SL grant; or, when the first communication device adopts DG, the first communication device The device receives the physical downlink control channel PDCCH indicating SL transmission from the third communication device;
  • the third timer times out; when the second condition is satisfied, the first communication device starts the fourth timer.
  • the second condition includes at least one of the following:
  • the SL HARQ feedback fed back by the first communication device to the third communication device is NACK; optionally, when the SL HARQ feedback corresponding to the first condition is disabled, the SL HARQ feedback fed back by the first communication device to the third communication device HARQ is a negative acknowledgement NACK;
  • the first communication device receives the NACK feedback from the second communication device; optionally, when the SL HARQ feedback corresponding to the first condition is enabled, the first communication device receives the NACK feedback from the second communication device. NACK feedback.
  • the first communication device did not successfully send the SL data.
  • the first communication device fails to send SL data successfully.
  • the first communication device is a TX UE
  • the second communication device is an RX UE
  • the third communication device is a base station as an example for description.
  • the second condition includes that the SL HARQ feedback sent by the TX UE to the base station is NACK.
  • a possible implementation manner may include: when the above first condition is satisfied, the TX UE is sending the corresponding SL HARQ feedback to the base station. At or after, the third timer is started and the fourth timer is stopped. When the first timing times out, and the SL HARQ feedback sent by the TX UE to the base station is NACK, the fourth timer is started. This example is applicable to a scenario where the HARQ of the SL process is disabled.
  • the TX UE when the third timer expires, the TX UE does not directly start the fourth timer, but judges according to the actual situation whether there is a PDCCH that needs to monitor and schedule SL retransmission resources. For example, when the second condition is satisfied, it may mean that the TX UE needs to monitor the PDCCH for scheduling SL retransmission resources, and then the fourth timer is started again. In contrast, when the third timer times out, the fourth timer is directly started, which can reduce the ineffective monitoring of the UE and save the power consumption of the UE.
  • the second in this embodiment can be applied to Uu DRX, and the above-mentioned third timer and fourth timer are both the third timer and the fourth timer in Uu DRX.
  • the third embodiment provides a communication method, including at least: when a first communication device sends at least one second piece of information to a second communication device, and/or, the first communication device indicates to the second communication device that a request has been made
  • the first communication device starts the first timer of the SL process, and/or stops the Second timer for the SL process.
  • the RX UE when the RX UE receives at least one second piece of information from the TX UE, and/or, the RX UE receives an indication from the TX UE that it has requested the replay of the SL process corresponding to the at least one second piece of information.
  • the RX UE When or after the information indicating the SL HARQ feedback of the SL process corresponding to the at least one second information has been transmitted, the RX UE starts the first timer of the SL process, and/or stops the second timer; or, when the RX UE receives from the TX UE the first timer used to instruct the RX UE to stop running or not start the SL process, and/or, stop running or not
  • the RX UE stops running or does not start the first timer and/or the second timer.
  • the TX UE may start the second timer.
  • the SL HARQ feedback may be NACK.
  • the first terminal device is a TX UE
  • the second communication device is an RX UE
  • at least one second information is the most or all SCI, SL grant, SL transmission opportunity, or SL MAC PDU during the current CG or DG period as an example.
  • the TX UE starts the first timer and/or the second timer, and a possible implementation manner may be: when the TX UE sends the last or all SCI, SL grants, and SL transmissions during the current DG or CG period to the RX UE Opportunity or SL MAC PDU, and when or after indicating to the RX UE that "retransmission resources have been requested or SL HARQ feedback has been sent", the first timer of the SL HARQ process associated with the SL grant is started, and the second timer is stopped.
  • the HARQ feedback of the above-mentioned SL process is NACK.
  • the TX UE may indicate to the RX UE that "retransmission resources of the SL process have been requested, or HARQ feedback of the SL process has been sent" when or after sending the NACK to the base station.
  • the TX UE when the first timer times out, the TX UE can perform any one of the following methods:
  • Mode 1 start the second timer
  • an implementation mode on the RX UE side is: when the RX UE receives the last or all SCI, SL grants, SL transmission opportunities or SL MAC PDUs during the current DG or CG period, and receives the TX UE sends
  • the first timer of the SL HARQ process associated with the grant is started, and the second timer is stopped.
  • the second timer is started.
  • the RX UE if it does not receive the above-mentioned indication from the TX UE, it will start the SL associated with the grant when or after receiving the last or all SCI, SL grants, transmission opportunities or SL MAC PDUs during the current DG or CG period The first timer of the HARQ process, and the second timer is stopped.
  • Mode 2 Start the second timer and send third information to the base station, where the third information is used to instruct the base station not to send new SL transmission or SL retransmission resources of other SL processes only during the running of the second timer Configure or not schedule SL new transmission or SL retransmission resources of other SL processes.
  • This consideration is mainly based on the following reasons: since the base station considers that the second timer is started during this period, it is possible to send other SL new transmission grants, or SL retransmission resource configuration of other SL processes.
  • an implementation mode on the RX UE side may be: when the RX UE receives the last or all SCI, SL grants, SL transmission opportunities or SL MAC PDUs during the current DG or CG period, and receives the TX UE
  • the first timer of the SL HARQ process associated with the grant is started, and the second timer is stopped. The first timer expires, and if the SL data is not successfully decoded, the second timer is started.
  • This method means that when the SL HARQ process times out, if the s1 data is successfully decoded, the second timer is not started. At this time, on the Tx UE side, even if the second timer is started, the Tx UE will instruct the base station not to send new SL transmissions or retransmissions of other sl HARQ processes when only the second timer is running. Packets will not be lost.
  • the third embodiment also provides a communication method, including at least: when or after the first communication device sends an ACK to the third communication device, the first communication device stops running or does not start the first timer of the SL process, and /or, stop running or not start the second timer of the SL process.
  • the first communication device when or after the first communication device sends the ACK to the third communication device, it may also send to the second communication device a first timing for instructing the second communication device to stop running or not to start the SL process. Indication information of the timer, and/or indication information of stopping or not starting the second timer of the SL process.
  • the second communication device when the second communication device receives a first timer from the first communication device for instructing the second communication device to stop running or not start the SL process, and/or stop running or not start all the timers. At or after the indication information of the second timer of the SL process, if the second communication device has started the first timer and/or the second timer of the SL process, the second communication device stops running the first timer and/or the second timer.
  • a possible implementation of the above embodiment includes: when or after the TX UE sends an ACK to the base station, send an ACK to the RX UE. It is instructed to stop running or not to start the first timer corresponding to the SL HARQ process, so as to avoid waste of resources by the RX UE starting the second timer to perform invalid monitoring subsequently.
  • the third embodiment further provides a communication method, including at least: when the first communication device sends a NACK to the third communication device or after the first communication device sends a NACK to the second communication device Or later, the first communication device starts the first timer of the SL process, and stops the second timer of the SL process. Correspondingly, when or after the second communication device receives the NACK, the second communication device starts the first timer of the SL process and stops the second timer of the SL process.
  • a possible implementation manner of the above embodiment includes: the TX UE requests the base station for retransmission resources of the SL process Or when or after the NACK of the SL process is sent, indicate to the RX UE that the NACK has been sent to the base station.
  • the RX UE starts the first timer and/or stops the second timer when or after receiving the above NACK.
  • the TX UE may start the first timer and/or stop the second timer when or after sending a NACK to the base station, or when or after indicating to the RX UE that a NACK has been sent to the base station.
  • This embodiment also provides a communication method, including at least: when or after the first communication device sends an ACK to a third communication device, when or after the first communication device sends an ACK to the second communication device, stopping the operation of the first communication device or not start the first timer of the SL process, and/or stop running or not start the second timer of the SL process.
  • the second communication device when or after receiving the above-mentioned ACK, does not start or stop running the first timer, and/or does not start or stop running the second timer.
  • a possible implementation manner of the above embodiment includes: when or after the TX UE sends an ACK to the base station, to the RX UE Indicates that an ACK has been sent to the base station.
  • the RX UE stops running or does not start the first timer when or after receiving the above-mentioned ACK, and stops running the second timer if the second timer is running.
  • the TX UE may stop or not start the first timer when or after sending an ACK to the base station, or when or after indicating to the RX UE that an ACK has been sent to the base station, and stop running the first timer if the second timer is running. Two timers.
  • the possible application scenario of the third embodiment may be that the HARQ feedback of the SL process is disabled, but this is not a limitation of the embodiments of the present application.
  • the solution in the third embodiment can also be applied to a scenario where HARQ feedback of the SL process is enabled, and the like.
  • the embodiment of the present application further provides the following solution: how to start the second timer when the first timer times out.
  • the first communication device is configured to report resources for SL HARQ feedback to the third communication device.
  • the TX UE when the first timing times out, then: if the TX UE has resources for reporting SL HARQ feedback to the base station or resources for reporting SL HARQ feedback to the base station, and HARQ feedback is enabled, the TX UE The second timer is only started when the NACK feedback from the RX UE is received. Alternatively, if the TX UE has resources for reporting SL HARQ feedback to the base station, or reports resources for SL HARQ feedback to the base station, and HARQ feedback is disabled, the second timer is started.
  • the TX UE may report the SL HARQ feedback to the base station through the PUCCH, and may also report the SL HARQ feedback to the base station through the PUSCH.
  • RX UE For RX UE: if the HARQ feedback of the SL process is enabled and the second communication device fails to decode the SL data of the SL process, when the first timer expires, the second communication device Start the second timer, this solution can be applied to the scenario where the HARQ feedback of the SL process is enabled; or, if the HARQ feedback of the SL process is disabled, when the first timer times out, the The second communication device starts the second timer.
  • the first communication device is configured to report resources for SL HARQ feedback to the third communication device, and this solution can be used in a scenario where the HARQ feedback of the SL process is disabled.
  • the TX UE when the first timer times out, then: if the TX UE has resources for reporting SL HARQ feedback to the base station or the TX UE reports resources for SL HARQ feedback to the base station, and HARQ feedback is enabled, then The RX UE starts the second timer only when the SL data is not successfully decoded.
  • This solution can be applied to the scenario where the HARQ feedback of the SL process is enabled; or, if the TX UE has the resources to report the SL HARQ feedback to the base station or the TX UE reports to the base station SL HARQ feedback resources, and when HARQ feedback is disabled, a second timer is started. This solution can be applied to the scenario where HARQ feedback of the SL process is disabled.
  • the RX UE can avoid packet loss on the SL because the second timer is not started, or when the SL HARQ feedback is not enabled. If necessary, start the second timer to monitor the SCI ineffectively and waste power consumption.
  • Embodiment 4 provides a communication method, the method at least includes: a first communication device sends at least one second piece of information to a second communication device; the first communication device feeds back according to a physical sideline corresponding to the at least one second piece of information Channel PSFCH resource or SL HARQ feedback, start the first timer of the SL process corresponding to the at least one second information, and/or stop the second timer of the SL process.
  • the second communication device receives at least one second information from the first communication device; the second communication device starts the at least one second information according to the PSFCH resource or HARQ feedback corresponding to the at least one second information The first timer of the corresponding SL process, and/or, the second timer of the SL process is stopped.
  • the PSFCH resource is used for transmitting HARQ feedback of the at least one second information.
  • the first communication device is a TX UE and the second communication device is an RX UE as an example, and at least the following steps are included:
  • Step 401 The TX UE sends at least one second information to the RX.
  • Step 402 The TX UE starts the first timer of the SL process corresponding to the at least one second information according to the PSFCH resource or the SL HARQ feedback corresponding to the at least one second information, and/or stops the second timer of the SL process. timer.
  • the second timer is started.
  • the TX UE starts the first timer of the SL process corresponding to the at least one second information according to the PSFCH resource corresponding to the at least one second information, and/or, Stopping the second timer of the SL process includes: the TX UE starts the first timer of the SL process in the first time domain symbol of the PSFCH resource, and/or, stops the SL process the second timer.
  • the TX UE starts the first timer of the SL process and/or stops the second timer of the SL process in the first symbol after the end of the PSFCH resource.
  • a possible implementation of the above example may be: TX UE When or after the last or all SCI, SL grant, SL transmission opportunity or SL MAC PDU of the current DG or CG period is sent to the RX UE, the TX UE is in the PSFCH corresponding to the SCI, SL grant, SL transmission opportunity or SL MAC PDU.
  • the first symbol or time slot after the resource location starts the first timer of the SL HARQ process associated with the SCI, SL grant, SL transmission opportunity or SL MAC PDU, and stops the second timer.
  • a possible implementation manner of the above example may be: TX UE sends SCI, SL grant, SL transmission opportunity, SL MAC PDU When or after one or more of the PDUs, the TX UE is in the first symbol of the PSFCH resource position corresponding to the SCI, SL grant, SL transmission opportunity, or the first time domain after the PSFCH resource position corresponding to the SL MAC PDU. The symbol starts the first timer of the SL HARQ process associated with the grant and stops the second timer.
  • the TX UE starts the first timer of the SL process corresponding to the at least one second information according to the HARQ feedback corresponding to the at least one second information, and stops the second timer of the SL process.
  • a timer including: the TX UE receives HARQ feedback corresponding to the at least one second piece of information from the RX UE; the TX UE receives the HARQ feedback in the first time domain, or after, or after the HARQ feedback is received symbol, start the first timer of the SL process, and stop the second timer of the SL process.
  • a possible implementation manner of the above example may be: when the TX UE receives the HARQ feedback (PSFCH) of the RX UE, After or after the first symbol, start the first timer of the SL HARQ process corresponding to or associated with the SCI, SL grant, SL transmission opportunity, and SL MAC PDU, and stop the second timer.
  • PSFCH HARQ feedback
  • Step 403 The RX UE starts the first timer of the SL process corresponding to the at least one second information according to the PSFCH resource or the SL HARQ feedback corresponding to the at least one second information, and stops the second timer of the SL process.
  • the second timer is started.
  • the RX UE starts the first timer of the SL process corresponding to the at least one second information according to the HARQ feedback corresponding to the at least one second information, and stops the second timing of the SL process
  • the device includes: the RX UE sends the HARQ feedback of the at least one second information to the TX UE; when the RX UE sends the HARQ feedback, or after, or after the first time domain symbol, Start the first timer of the SL process, and stop the second timer of the SL process.
  • a possible implementation manner of the above example may be: RX UE After receiving the last or all SCI, SL grant, SL transmission opportunity, or SL MAC PDU during the current DG or CG period, and the first symbol after sending HARQ feedback to the TX UE, start the SL HARQ process associated with the grant. The first timer, stop the second timer.
  • the HARQ feedback is HARQ feedback for the SCI, SL grant, SL transmission opportunity, or SL MAC PDU.
  • a possible implementation of the above example may be: when the RxUE receives the SCI, SL grant, SL transmission opportunity, , SL MAC PDU, and in the first symbol after sending HARQ feedback to the TX UE, start the first timer of the SL HARQ process associated with the grant, and stop the second timer.
  • the RX UE starts the first timer of the SL process corresponding to the at least one second information according to the PSFCH resource corresponding to the at least one second information, and stops the second timer of the SL process.
  • the timer includes: starting the first timer of the SL process in the first time domain symbol in the PSFCH resource of the RX UE, and stopping the second timer of the SL process.
  • the HARQ feedback of the SL process is enabled.
  • the first timer and the second timer may be the first timer and the second timer of SLDRX.
  • the TX UE and the RX UE can start the first timer and the second timer according to the PSFCH resource or HARQ feedback, so as to align the activity time of the TX UE and the RX UE , to avoid packet loss and invalid monitoring, and improve the performance of SL communication.
  • the SCI may include a first-level SCI, or PSCCH, or a first-level SCI and a second-level SCI.
  • the start and stop behaviors of the first timer and the second timer on the SL DRX on the TX UE side can be optional, that is, for the content on the TX UE side of the present invention, the first timer and the second timer on the SL DRX are used. After the content related to the start-stop behavior of the second timer is deleted, the remaining behaviors are still valid, and the remaining behaviors alone are also regarded as the protection content of the present invention.
  • the fifth embodiment provides a communication method, including: when the communication device is configured with SL discontinuous reception DRX, and the communication device is in the SL active time, the communication device monitors the SCI corresponding to at least one SL DRX; and/or, when When the SCI indicates one or the current last SL transmission, SL data transmission, SL transmission opportunity, SL transmission of transmission opportunity, SL authorization, or SL MAC PDU, the communication device starts the first SL process corresponding to the SCI.
  • timer stop the second timer on the corresponding SL process; and/or, if the SCI indicates a new SL transmission or SL data transmission, the first symbol after the SCI is received Or the time slot starts or restarts the third timer on the SLDRX corresponding to the SCI.
  • active time may be replaced by active time.
  • the SDL DRX in the SCI corresponding to at least one SDL DRX monitored by the communication device may be an SL connection, or an SDL DRX corresponding to the SL connection.
  • the SCI is a first-level SCI, or, PSCCH, or, a first-level SCI and a second-level SCI.
  • the current last SL transmission, SL data transmission, SL transmission opportunity, SL transmission of the transmission opportunity, SL authorization or SL MAC PDU may be the last SL transmission, SL data transmission, SL transmission opportunity, SL transport, SL grant, or SL MAC PDU for a transport opportunity.
  • the communication device is active at the time of SL, including: if Uu and SL share the same MAC entity, and at least one SL connection or SL DRX is active at time; or, if Uu and SL do not share the same MAC entity, and SL The MAC entity is at active time.
  • the communication device starts the first timer on the SL process corresponding to the SCI, and stops the second timer on the corresponding SL process, including: after the communication device carries the SL HARQ feedback transmission, Start the first timer on the SL process corresponding to the SCI, and/or stop the second timer on the corresponding SL process.
  • the communication device when at the SL active time, it includes: when at least one SDL DRX of the communication device is active at the active time; the monitoring the SCI corresponding to the at least one SDL DRX includes: monitoring any/ All SL DRX corresponding SCIs.
  • the active time of the SL DRX of different SL connections is shared, that is, when the UE receives the SCI of connection #1 during the inactive time of its connection #1, if its connection #2 is the active time, the UE will Process the SCI, and/or, trigger "start/restart the SL inactivity timer on connection #1, and the HARQ RTT timer, stop the corresponding retransmission timer".
  • Mode 1 Does not reflect whether Uu and SL share the same MAC entity:
  • At least one SL connection or SL DRX is active at the time, listen to the SCI of any/all SL connections, and/or, for the SL DRX of the SL connection indicated by the SCI, start or stop when the existing start or stop conditions are met. Stop the corresponding SL inactivity timer, SL HARQ RTT timer, and SL retransmission timer.
  • the UE starts HARQ on the SL (HARQ) process corresponding to the SCI RTT timer, stop the retransmission timer on the corresponding SL (HARQ) process; if the above SCI indicates a SL connection or a new SL transmission on the SL DRX, the first symbol after the SCI is received is started or restarted SL inactivity timer on this SL connection or SL DRX.
  • Mode 2 Indicate whether Uu and SL share the same MAC entity:
  • the communication device when it is in the SL activity time, it includes: at least one SL connection or SL DRX duration timer onduration timer, sidelink DRX duration timer drx-OnDurationTimerSL, active timer inactivity timer, sidelink DRX active period timer drx-InactivityTimerSL or retransmission timer retansmission timer, sidelink DRX retransmission timer drx-RetransmissionTimerSL is running, or at least one SL process retransmission timer retransmission timer, or the sidelink DRX retransmission timer drx-RetransmissionTimerSL is running, or in the time domain resource of the SL broadcast/multicast energy-saving resource configuration or resource mode, this method is mainly used to receive SL by using specific resources
  • the monitoring of the SCI corresponding to at least one SL DRX includes: monitoring the SCI corresponding to any/all
  • the monitoring of any or all SCIs corresponding to the SL DRX includes: the communication device monitoring the SCIs that it can monitor and sent to itself.
  • the monitoring of the SCI corresponding to at least one SL DRX includes: monitoring the SL DRX Or SL connection using SCI on carrier/frequency point.
  • connection #1 the active time of the SL DRX of different SL connections is not fully shared. This is the case where "some SLs are connected at carrier frequency A and some SLs are connected at carrier frequency B". In this case, when the UE receives the SCI of connection #1, the UE can also receive the SCI of other SL connections on the same carrier frequency as connection #1.
  • the above-mentioned when the UE is at the SL active time includes: when an SL DRX or SL is connected at the active time; the monitoring of the SCI corresponding to at least one SL DRX includes: monitoring the SCI of the SL DRX or the SL connection.
  • the fifth embodiment also provides an example in which it is assumed that the active times of the SL DRXs of different SL connections are independent, that is, when the UE receives connection #1 during the inactive time of its connection #1 If the SCI of connection #2 is active time, the UE does not process the SCI, and/or does not trigger "start/restart the SL inactivity timer on connection #1, and the HARQ RTT timer, stop the corresponding retransmission timer".
  • an SL connection or SL DRX If an SL connection or SL DRX is active, monitor the SCI of the SL connection, and/or, when the SCI indicates an SL transmission, or indicates the last SL transmission opportunity of the current DG/CG period, start the corresponding SL HARQ SL HARQ RTT timer of the process. If the SCI indicates a new SL transmission, start the SL inactivity timer.
  • the communication device is configured with SLDRX.
  • the fifth embodiment specifies that when the SL DRX is enabled, for any SL connection, the condition of the SCI on the SL connection can be processed.
  • the reason for the occurrence of "when receiving a new SL grant from SL connection #1 during the inactive time of its SL connection #1" may be that the Rx missed the SCI of SL connection #1 before, causing only the Tx to extend the activity. time, and Rx does not stretch the active time, so that the active time is not aligned between Tx-Rx.
  • Tx and Rx can restore the alignment activity time as soon as possible, and reduce the occurrence of packet loss in Rx.
  • FIG. 6 it is a schematic diagram of a communication apparatus according to an embodiment of the present application.
  • the apparatus is used to implement the steps performed by the first communication device, the second communication device, or the communication device in the above embodiments.
  • the apparatus 600 includes a transceiver unit 610 and a processing unit 620 .
  • the communication device may be a first communication device or a chip used in the first communication device, then:
  • the processing unit 620 is configured to determine first information, where the first information is used to instruct the second communication device to start the first timer and/or the second timer in the sidelink SL process corresponding to the first information, or not to Start the first timer and/or the second timer; or, the first information is used to instruct the second communication device to request or not to request retransmission resources for the corresponding SL process; the first The timer is used to indicate the minimum length of time before the resource configuration information or authorization information expected to be used for SL retransmission arrives at the receiving end. duration.
  • a transceiver unit 610 configured to send the first information to the second communication device.
  • the first information is used to instruct the second communication device to start the first timer and/or the second timer in the corresponding SL process, including: the first information is used to indicate the the second communication device starts the first timer and/or the second timer in the corresponding SL process when or after the second communication device receives or finishes receiving at least one second information; the second communication device starts the first timer and/or the second timer in the corresponding SL process; The first information is used to instruct the second communication device not to start the first timer and/or the second timer in the corresponding SL process, including: the first information is used to instruct the second communication device to When or after the second communication device receives or finishes receiving the at least one second information, the first timer and/or the second timer is not started in the corresponding SL process.
  • the first information is used to instruct the second communication device to request or not to request retransmission resources for the corresponding SL process, including: the first information is used to instruct the second communication device
  • the communication device requests or does not request retransmission resources for the corresponding SL process when or after the first communication device runs out, sends, or sends the at least one second piece of information.
  • the first information is used to instruct the second communication device to request or not to request retransmission resources for the SL process, including: the first information is used to send the second communication
  • the communication device instructs at least one first transmission to request or not to request retransmission resources from the third communication device when or after the at least one second message is used up, sent or sent; Sending a SL NACK or a SL ACK to the third communication device upon or after indicating to the second communication device that at least one first transmission is exhausted, sent or sent the at least one second information.
  • the first information is carried in sidelink control information SCI, medium access control control element MAC CE, or radio resource control RRC message.
  • the first information includes at least the serial number or identifier of the SL process.
  • the transceiver unit 610 is further configured to: receive third information from a third communication device, where the third information is used to indicate to the first communication device that at least one first transmission is running out , requesting or not requesting retransmission resources from the third communication device when or after the at least one second information is sent or after the at least one second information is sent.
  • the third information is carried in an RRC message or downlink control information DCI.
  • the processing unit 620 is further configured to: determine whether or not to request or not to request the third communication device to replay the first transmission when or after the at least one second information is used up, sent or sent.
  • the transceiver unit 610 is further configured to send the indication information of the first transmission to the third communication device.
  • the sending the indication information of the first transmission to the third communication device includes: if the third communication device configures the first communication device through an RRC reconfiguration message For the first transmission, an RRC reconfiguration complete message is sent to the third communication device, where the RRC reconfiguration complete message carries the indication information of the first transmission.
  • the first transmission is the SL radio bearer SLRB, or the SL logical channel LCH, or the SL process.
  • the at least one second information includes: all the second information, or the last second information, or one second information.
  • the at least one second information includes: the at least one second information during the current dynamic scheduling DG or the configuration scheduling CG; or the at least one second information during a DG or CG information.
  • the second information is SCI, or SL transmission, or SL transmission opportunity, or SL authorization, or SL medium access control protocol data unit MAC PDU.
  • the HARQ feedback of the HARQ feedback of the SL process is disabled.
  • the communication device may be a first communication device or a chip used in a second communication device, then:
  • the transceiver unit 610 is configured to receive the first information from the first communication device; the processing unit 620 is configured to determine, according to the first information, to start the first timer and/or the second timer for the SL process corresponding to the first information. or do not start the first timer and/or the second timer; or, determine whether to request or not to request retransmission resources in the corresponding SL process, wherein the first timer is used to indicate that it is expected to be used for SL retransmission The minimum length of time before the transmitted resource configuration information or authorization information arrives, and the second timer is used to indicate the maximum length of time required to receive the resource configuration information or authorization information retransmitted by the SL.
  • the first information is used to instruct the second communication device to start the first timer and/or the second timer in the corresponding SL process, including: the first information is used to indicate the the second communication device starts the first timer and/or the second timer in the corresponding SL process when or after the second communication device receives or finishes receiving at least one second information; the second communication device starts the first timer and/or the second timer in the corresponding SL process; The first information is used to instruct the second communication device not to start the first timer and/or the second timer in the corresponding SL process, including: the first information is used to instruct the second communication device to When or after the second communication device receives or finishes receiving the at least one second information, the first timer and/or the second timer is not started in the corresponding SL process.
  • the first information is used to instruct the second communication device to request or not to request retransmission resources for the corresponding SL process, including: the first information is used to instruct the second communication device
  • the communication device requests or does not request retransmission resources for the corresponding SL process when or after the first communication device runs out, sends, or sends the at least one second piece of information.
  • the first information is used to instruct the second communication device to request or not to request retransmission resources for the SL process, including: the first information is used to send the second communication
  • the communication device instructs at least one first transmission to request or not to request retransmission resources from the third communication device when or after the at least one second message is used up, sent or sent; Sending a SL NACK or a SL ACK to the third communication device upon or after indicating to the second communication device that at least one first transmission is exhausted, sent or sent the at least one second information.
  • the first information is carried in sidelink control information SCI, medium access control control element MAC CE, or radio resource control RRC message.
  • the first information includes at least the serial number or identifier of the SL process.
  • the at least one second information includes: all the second information, or the last second information.
  • the at least one second information includes: the at least one second information during the current dynamic scheduling DG or the configuration scheduling CG; or the at least one second information during a DG or CG information.
  • the second information is SCI, or SL transmission, or SL transmission opportunity, or SL authorization, or SL medium access control protocol data unit MAC PDU.
  • the HARQ feedback of the HARQ feedback of the SL process is disabled.
  • the communication device may be a first communication device or a chip used in the first communication device, then:
  • the processing unit 620 is configured to satisfy a first condition, where the first condition is: the first communication device sends a MAC PDU or SCI on the configured SL authorization; or, the first communication device receives an instruction from a third communication device
  • the physical downlink control channel PDCCH of SL transmission; the transceiver unit 610 is configured to start the third timer and stop the fourth timer when or after sending the SL HARQ for the first condition to the third communication device,
  • the third timer is used to indicate the minimum length of time before the arrival of the resource configuration information or authorization information expected to be used for SL retransmission, and the fourth timer is used to indicate that the resource configuration information or authorization information for SL retransmission is received The maximum time required for the message.
  • the MAC PDU or SCI is sent on the configured SL grant; or, the first communication device receives the physical downlink control channel PDCCH indicating SL transmission from the third communication device, including: when the first communication device When a communication device adopts CG, the first communication device sends a MAC PDU or SCI on the configured SL authorization; or, when the first communication device adopts DG, the first communication device receives an instruction from a third communication device Physical downlink control channel PDCCH transmitted by SL; Y.
  • the first timer includes a first timer corresponding to the first condition, and/or the first timer
  • the second timer includes a second timer corresponding to the first condition.
  • the processing unit 620 is further configured to start the second timer by the first communication device when the first timer times out and a second condition is satisfied.
  • the second condition includes at least one of the following:
  • the SL HARQ fed back by the first communication device to the third communication device is a negative acknowledgement NACK;
  • the first communication device receives NACK feedback from the second communication device
  • the first communication device failed to send SL data successfully.
  • the SL HARQ fed back by the first communication device to the third communication device is a negative acknowledgment NACK; including: when the SL HARQ feedback corresponding to the first condition is disabled, the The SL HARQ fed back by the first communication device to the third communication device is a negative acknowledgment NACK;
  • the first communication device receiving the NACK feedback from the second communication device includes: when the SL HARQ feedback corresponding to the first condition is enabled, the first communication device receives to the NACK feedback from the second communication device.
  • the failure of the first communication device to send the SL data includes: when the SL HARQ feedback corresponding to the first condition is disabled, the first communication device fails to send the SL data successfully data.
  • the communication device may be a first communication device or a chip used in the first communication device, then:
  • the processing unit 620 is configured to, when the first communication device sends at least one second information to the second communication device, and/or the first communication device indicates to the second communication device that the at least one second information has been requested When or after the retransmission resource of the SL process or the HARQ feedback of the SL process has been sent, start the first timer of the SL process, and/or stop the second timer of the SL process; or, process A unit 620, configured to stop running or not start the first timer of the SL process when or after the first communication device sends an affirmative ACK to the third communication device, and/or, stop running or not Start the second timer of the SL process; or, the processing unit 620, configured to send a NACK to the second communication device when or after the first communication device sends a NACK to the third communication device At or after, the first communication device starts the first timer of the SL process and stops the second timer of the SL process; or, the processing unit 620 is configured to, when the first communication device sends the
  • the first communication device indicates to the second communication device that the retransmission resource of the SL process has been requested, or the SL HARQ feedback of the SL process has been sent, including: when all the When or after the first communication device requests the third communication device for retransmission resources of the SL process or sends NACK feedback for the SL process, the first communication device indicates to the second communication device that it has requested the Retransmission resources of the SL process, or the SL HARQ feedback corresponding to the SL process has been sent to the third communication device.
  • the SL HARQ feedback is NACK.
  • the HARQ feedback of the SL process is enabled, when the first timer expires and the first communication device receives NACK feedback from the second communication device when the second timer is started; or, if the HARQ feedback of the SL process is disabled, when the first timer times out, the first communication device starts the second timer.
  • the first communication device is configured to report resources for SL HARQ feedback to the third communication device.
  • the transceiver unit 610 is configured to: when or after the second timer is started, send third information to the third communication device, where the third information is used to indicate the The third communication device does not send the SL new transmission or the SL retransmission resource configuration of other SL processes, or does not schedule the SL new transmission or the SL retransmission resource configuration of other SL processes only during the running of the second timer. SL retransmission resources.
  • the transceiver unit 610 is further configured to: when or after the first communication device sends an ACK to the third communication device, send an ACK to the second communication device to indicate the The second communication device stops running or does not start the first timer of the SL process, and/or stops running or does not start the second timer of the SL process.
  • the at least one second information includes: all the second information, or the last second information.
  • the at least one second information includes: the at least one second information during the current DG or CG; or the at least one second information during a DG or CG, the The second information includes SCI, or SL transmission, or SL transmission opportunity, or SL grant, or SL MAC PDU.
  • the HARQ feedback of the SL process is disabled.
  • the communication device may be a second communication device or a chip used in the second communication device, then:
  • the processing unit 620 is configured to, when the second communication device receives at least one second piece of information from the first communication device, and/or the second communication device receives an indication from the first communication device that it has requested the When or after the retransmission resource of the SL process corresponding to the at least one second information or the information indicating the SL HARQ feedback of the SL process corresponding to the at least one second information has been sent, the second communication device starts the SL process the first timer, and/or, stop the second timer; or,
  • the second communication device When the second communication device receives from the first communication device the first timer for instructing the second communication device to stop running or not start the SL process, and/or stop running or When or after the information of the second timer of the SL process is not started, the second communication device stops running or does not start the first timer and/or the second timer;
  • the first timer is used to indicate the minimum length of time before the arrival of resource configuration information or authorization information expected to be used for SL retransmission
  • the second timer is used to indicate that the resource configuration information of SL retransmission is received or the maximum time required to authorize information.
  • the SL HARQ feedback is NACK.
  • the processing unit 620 is configured to: when the HARQ feedback of the SL process is enabled and the second communication device fails to decode the SL data of the SL process, the first When a timer times out, the second communication device starts the second timer; or, when the HARQ feedback of the SL process is disabled, when the first timer times out, the second communication device The device starts the second timer.
  • the first communication device is configured to report resources for SL HARQ feedback to the third communication device.
  • the at least one second information includes: all the second information, or the last second information, or one second information.
  • the at least one second information includes: the at least one second information during the current DG or CG; or the at least one second information during a DG or CG, the The second information is SCI, or SL transmission, or SL transmission opportunity, or SL authorization, or SL MAC PDU.
  • the HARQ feedback of the SL process is disabled.
  • the communication device may be a first communication device or a chip used in the first communication device, then:
  • the transceiver unit 610 is configured to send at least one second information to the second communication device;
  • the processing unit 620 is configured to start the at least one physical sideline feedback channel PSFCH resource or SL HARQ feedback corresponding to the at least one second information a first timer of the SL process corresponding to the second information, and/or stopping the second timer of the SL process, and the PSFCH resource is used to transmit the HARQ feedback of the at least one second information;
  • the first timer is used to indicate the minimum length of time before the resource configuration information or authorization information expected to be used for SL retransmission arrives at the receiving end, and the second timer is used to indicate that the receiving end receives the resource configuration of SL retransmission. The maximum length of time required for a message or authorization message.
  • start the first timer of the SL process corresponding to the at least one second information start the first timer of the SL process corresponding to the at least one second information, and stop the SL process
  • the second timer includes: starting the first timer of the SL process for the first symbol in the PSFCH resource, and/or stopping the second timer of the SL process, or, in all At the first symbol after the end of the PSFCH resource, start the first timer of the SL process, and/or stop the second timer of the SL process.
  • the first timer of the SL process corresponding to the at least one second information is started, and the second timer of the SL process is stopped. , comprising: receiving the HARQ feedback corresponding to the at least one second piece of information from the second communication device; when the HARQ feedback is received, or after, or the first time-domain symbol after, starting the HARQ feedback The first timer of the SL process is stopped, and the second timer of the SL process is stopped.
  • the at least one second information includes: all the second information, or the last second information, or one second information.
  • the at least one second information includes: the at least one second information during the current DG or CG; or the at least one second information during a DG or CG, the The second information is SCI, or SL transmission, or SL transmission opportunity, or SL authorization, or SL MAC PDU.
  • HARQ feedback of the SL process is enabled.
  • the communication device may be a second communication device or a chip used in the second communication device, then:
  • the transceiver unit 610 is configured to receive at least one second information from the first communication device; the processing unit 620 is configured to: start the at least one second information according to the PSFCH resource or HARQ feedback corresponding to the at least one second information The corresponding first timer of the SL process, and/or the second timer of the SL process is stopped, and the PSFCH resource is used for transmitting the HARQ feedback of the at least one second piece of information.
  • start the first timer of the SL process corresponding to the at least one second information, and stop the second timer of the SL process include:
  • the first timer of the SL process corresponding to the at least one second information is started, and the second timer of the SL process is stopped. , including: sending the HARQ feedback of the at least one second information to the first communication device; when sending the HARQ feedback, or after, or the first time-domain symbol after, starting the first time-domain symbol of the SL process A timer to stop the second timer of the SL process.
  • the at least one second information includes: all the second information, or the last second information, or one second information.
  • the at least one second information includes: the at least one second information during the current DG or CG; or, the at least one second information during a DG or CG, the The second information is SCI, or SL transmission, or SL transmission opportunity, or SL authorization, or SL MAC PDU.
  • HARQ feedback of the SL process is enabled.
  • the communication device may be a communication device or a chip used in a communication device, then:
  • the processing unit 620 is configured to monitor the SCI corresponding to at least one SL DRX when the communication device is configured with SL discontinuous reception DRX and the communication device is at the SL active time; and/or, when the SCI indicates one or the current last SL During transmission, SL data transmission, SL transmission opportunity, SL transmission of transmission opportunity, SL authorization, or SL MAC PDU, start the first timer on the SL process corresponding to the SCI, and/or stop the corresponding SL process. a second timer; and/or, if the SCI indicates a new SL transmission or SL data transmission, start or restart the SL DRX corresponding to the SCI in the first symbol or time slot after the SCI is received. third timer.
  • the SL DRX in the SCI corresponding to the monitoring at least one SL DRX may be an SL connection, or an SL DRX corresponding to the SL connection.
  • the SCI is a first-level SCI, or, PSCCH, or, a first-level SCI and a second-level SCI.
  • the current last SL transmission, SL data transmission, SL transmission opportunity, SL transmission of transmission opportunity, SL grant or SL MAC PDU may be the last SL transmission during the current DG or CG period , SL Data Transmission, SL Transmission Opportunity, SL Transmission of Transmission Opportunity, SL Grant, or SL MAC PDU.
  • the communication device is active at the time of SL, including: if Uu and SL share the same MAC entity, and at least one SL connection or SL DRX is active at time; or if Uu and SL do not share the same MAC entity, and the SL MAC entity is at active time.
  • starting the first timer on the SL process corresponding to the SCI, and stopping the second timer on the corresponding SL process including: after the transmission carrying the SL HARQ feedback ends, in the SCI Start the first timer on the corresponding SL process, and/or stop the second timer on the corresponding SL process.
  • the communication device when it is in the SL active time, it includes: when at least one SL DRX of the communication device is in the active time; the monitoring of the SCI corresponding to the at least one SL DRX includes: Monitor any/all SCIs corresponding to SL DRX.
  • the monitoring of the SCIs corresponding to any/all SL DRXs includes: the communication device monitoring the SCIs that it can monitor and sent to itself.
  • the communication device when it is in the SL active time, it includes: at least one SL connection or SL DRX duration timer onduration timer, sidelink DRX duration timer drx-OnDurationTimerSL , inactivity timer, sidelink DRX active period timer drx-InactivityTimerSL or retransmission timer retansmission timer, sidelink DRX retransmission timer drx-RetransmissionTimerSL is running, or at least one SL process is running.
  • the retransmission timer retransmission timer, or the sidelink DRX retransmission timer drx-RetransmissionTimerSL is running, or is in the time domain resource of the energy-saving resource configuration of SL broadcast/multicast; the monitoring of at least one SL DRX corresponds to SCI, including: monitoring any/all SCIs corresponding to SL DRX.
  • the monitoring of the SCI corresponding to at least one SL DRX includes: monitoring the SL DRX Or SL connection using SCI on carrier/frequency point.
  • the monitoring of the SCI corresponding to at least one SL DRX includes: monitoring the SL DRX or SL-connected SCI.
  • the communication device is configured with SL discontinuous reception DRX.
  • the above-mentioned communication device 600 may further include a storage unit, which is used to store data or instructions (also referred to as codes or programs), and each of the above-mentioned units may interact or be coupled with the storage unit to implement corresponding methods or Function.
  • the processing unit 620 may read data or instructions in the storage unit, so that the communication apparatus implements the method in the above-mentioned embodiment.
  • each unit in the above apparatus can be realized in the form of software calling through the processing element; also can all be realized in the form of hardware; some units can also be realized in the form of software calling through the processing element, and some units can be realized in the form of hardware.
  • each unit can be a separately established processing element, or can be integrated in a certain chip of the device to be implemented, and can also be stored in the memory in the form of a program, which can be called by a certain processing element of the device and execute the unit's processing. Function.
  • each step of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in the processor element or implemented in the form of software being invoked by the processing element.
  • a unit in any of the above apparatuses may be one or more integrated circuits configured to implement the above methods, eg, one or more application specific integrated circuits (ASICs), or, one or more Multiple microprocessors (digital singnal processors, DSPs), or, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms.
  • ASICs application specific integrated circuits
  • DSPs digital singnal processors
  • FPGAs field programmable gate arrays
  • a unit in the apparatus 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 (central processing unit, CPU) or other processors that can invoke 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 transceiver unit 610 is an interface circuit of the device, used for receiving signals from or sending signals to other devices.
  • the transceiver unit 610 is an interface circuit used by the chip to receive signals from other chips or devices, or an interface circuit to send signals to other chips or devices.
  • the communication apparatus includes: a processor 710 and an interface 730 , and optionally, the communication apparatus further includes a memory 720 .
  • the interface 730 is used to enable communication with other devices.
  • the first communication device, the second communication device or the method executed by the communication device may call the memory (which may be the first communication device, the second communication device or the memory 720 in the communication device, or the external memory 720) through the processor 710. program stored in the memory). That is, the first communication device, the second communication device or the communication device may include a processor 710, and the processor 710 executes the first communication device, the second communication device or the communication device in the above method embodiments by invoking the program in the memory method of execution.
  • the processor here may be an integrated circuit with signal processing capability, such as a CPU.
  • the first communication device, the second communication device or the communication device may be implemented by one or more integrated circuits configured to implement the above methods. For example: one or more ASICs, or, one or more microprocessor DSPs, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. Alternatively, the above implementations may be combined.
  • the functions/implementation process of the transceiver unit 610 and the processing unit 620 in FIG. 6 can be implemented by the processor 710 in the communication apparatus 700 shown in FIG. 7 calling computer executable instructions stored in the memory 720 .
  • the function/implementation process of the processing unit 610 in FIG. 6 may be implemented by the processor 710 in the communication device 700 shown in FIG. 7 calling the computer-executed instructions stored in the memory 720, and the function of the transceiver unit 610 in FIG. 6
  • the implementation process can be implemented through the interface 730 in the communication device 700 shown in FIG. 7 .
  • the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, implements the functions of any of the foregoing method embodiments.
  • the present application also provides a computer program product, which implements the functions of any of the above method embodiments when the computer program product is executed by a computer.
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.
  • a general-purpose processor may be a microprocessor, or alternatively, the general-purpose processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a digital signal processor core, or any other similar configuration. accomplish.
  • a software unit executed by a processor, or a combination of the two.
  • Software units can be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or this In any other form of storage media in the field.
  • RAM random access memory
  • ROM read-only memory
  • EPROM EPROM memory
  • EEPROM memory EEPROM memory
  • registers hard disk, removable disk, CD-ROM or this
  • a storage medium may be coupled to the processor such that the processor may read information from, and store information in, the storage medium.
  • the storage medium can also be integrated into the processor.
  • the processor and storage medium may be provided in the ASIC.
  • the above-described functions described herein may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, the functions may be stored on, or transmitted over, a computer-readable medium in the form of one or more instructions or code.
  • Computer-readable media includes computer storage media and communication media that facilitate the transfer of a computer program from one place to another. Storage media can be any available media that a general-purpose or special-purpose computer can access.
  • Such computer-readable media may include, but are not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other device that can be used to carry or store instructions or data structures and Other media in the form of program code that can be read by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • any connection is properly defined as a computer-readable medium, for example, if software is transmitted from a website site, server or other remote source over a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) Or transmitted by wireless means such as infrared, wireless, and microwave are also included in the definition of computer-readable media.
  • DSL digital subscriber line
  • the discs and discs include compact discs, laser discs, optical discs, digital versatile discs (DVDs), floppy discs and Blu-ray discs. Disks usually reproduce data magnetically, while discs usually use Lasers make optical copies of data. Combinations of the above can also be included in computer readable media.
  • the functions described in this application may be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

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Abstract

La présente invention concerne un procédé de communication, un appareil et un système. Ledit procédé comprend au moins les étapes suivantes : un premier dispositif de communication détermine des premières informations, les premières informations étant utilisées pour ordonner à un second dispositif de communication de mettre en marche un premier temporisateur et/ou un second temporisateur sur un processus de liaison latérale (SL) correspondant aux premières informations, ou de ne pas mettre en marche le premier temporisateur et/ou le second temporisateur ; ou les premières informations sont utilisées pour ordonner au second dispositif de communication de demander, ou non, des ressources de retransmission pour le processus de liaison SL ; et le premier dispositif de communication envoie les premières informations au second dispositif de communication. En utilisant le procédé, l'appareil et le système selon la présente demande, le premier dispositif de communication peut ordonner au second dispositif terminal de mettre sous tension ou de ne pas mettre sous tension le premier temporisateur et/ou le second temporisateur, etc. de telle sorte que le temporisateur du premier dispositif de communication puisse être aligné sur celui du second dispositif de communication.
PCT/CN2021/072334 2021-01-15 2021-01-15 Procédé de communication, appareil et système WO2022151449A1 (fr)

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CN202180068600.XA CN116458259A (zh) 2021-01-15 2021-01-15 一种通信方法、装置及***
PCT/CN2021/072334 WO2022151449A1 (fr) 2021-01-15 2021-01-15 Procédé de communication, appareil et système

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/072334 WO2022151449A1 (fr) 2021-01-15 2021-01-15 Procédé de communication, appareil et système

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CN111757294A (zh) * 2019-03-29 2020-10-09 华为技术有限公司 一种重传资源的调度方法及设备
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