Intermittent reception control method and apparatus, terminal and readable storage medium

Abstract

This application discloses a method and device for controlling discontinuous reception, a terminal, and a readable storage medium, which belong to the communication technology field, wherein the method includes: a first terminal performing a first operation in a sidelink-based transmission process, the first operation including at least one of determining a transmission status of a hybrid automatic repeat request (HARQ) feedback by the first terminal and decoding a data packet by the first terminal; and the first terminal determining whether to start a timer used for controlling sidelink discontinuous reception based on a result of performing the first operation.

Description

Technical Field

[0001] (Cross - reference to related applications) This application claims the priority of Chinese Patent Application No. 202010997202.3, filed in China on September 21, 2020, and all the contents of the said application are incorporated herein by reference.

[0002] This application belongs to the field of communication technology, and specifically relates to a method and apparatus for controlling discontinuous reception, a terminal, and a readable storage medium.

Background Art

[0003] In conventional communication systems, discontinuous reception (DRX) is often adopted to achieve the purpose of power saving. Therefore, a terminal in the DRX state does not need to continuously monitor the control channel. However, the current DRX mechanism is only used for the uplink and downlink between the network - side device and the terminal, and there is currently no DRX configuration suitable for SideLink (side link).

Summary of the Invention

Problems to be Solved by the Invention

[0004] Embodiments of this application can solve the problem that in the prior art, the DRX mechanism is only used for the uplink and downlink between the network - side device and the terminal, resulting in a relatively single application scenario of the DRX configuration, and provide a method and apparatus for controlling discontinuous reception, a terminal, and a readable storage medium.

Means for Solving the Problems

[0005] According to a first embodiment, a method for controlling intermittent reception is provided, in a sidelink-based transmission process, wherein a first terminal performs a first operation, the first operation including at least one of determining the status of transmission of a hybrid automatic retransmission request (HARQ) feedback by the first terminal and decoding a data packet by the first terminal, and the first terminal determining whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation.

[0006] According to a second embodiment, a control device for intermittent reception is provided, which includes an execution module for performing a first operation in a sidelink-based transmission process, the first operation including an execution module that includes at least one of determining the transmission status of a hybrid automatic retransmission request (HARQ) feedback and decoding a data packet, and a determination module for determining whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation.

[0007] According to a third aspect, a terminal is provided, which includes a processor, memory, and a program or instruction stored in the memory and operable on the processor, and when the program or instruction is executed by the processor, the steps of the method according to the first aspect are realized.

[0008] According to a fourth aspect, a readable storage medium is provided on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method according to the first aspect are realized.

[0009] According to a fifth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled with the processor, the processor running programs or instructions for network-side equipment, and used to implement the method according to the first aspect.

[0010] According to the sixth aspect, a computer program product is provided, the computer program product being stored in a non-volatile readable storage medium, and the computer program product being executed by at least one processor to realize the method according to the first aspect. [Effects of the Invention]

[0011] In the embodiment of this application, in a sidelink-based transmission process, the first terminal can determine whether to determine the transmission status of a hybrid automatic retransmission request (HARQ) feedback and / or whether to activate a timer used for controlling sidelink intermittent reception based on the result of decoding a data packet by the first terminal, thereby realizing control of intermittent reception DRX on the sidelink, and thereby solving the problem in conventional technology where the DRX mechanism is used only on uplink and downlink between network-side equipment and terminals, resulting in a relatively single application scenario for DRX deployment. [Brief explanation of the drawing]

[0012] [Figure 1] This is a block diagram of a wireless communication system to which the embodiments of this application can be applied. [Figure 2] This is a schematic diagram of the DRX cycle in the time domain of an embodiment of this application. [Figure 3] This is a schematic diagram of the DRX type embodiment of the present application. [Figure 4] This is a schematic diagram showing the wake-up signaling time flow prior to the CDRX-on duration in the embodiment of this application. [Figure 5] This is a schematic diagram of the Sidelink of an embodiment of this application. [Figure 6] This is a flowchart of the control method for intermittent reception in an embodiment of this application. [Figure 7] This is a schematic diagram of the structure of the control device for intermittent reception in the embodiment of this application. [Figure 8] This is a schematic diagram of the structure of a communication device that realizes an embodiment of the present invention. [Figure 9] This is a schematic diagram of the hardware structure of a terminal that implements the embodiment of this application. [Modes for carrying out the invention]

[0013] The following clearly and completely describes the technical concepts in the embodiments of this application, linking them to the drawings of the embodiments. Clearly, the embodiments described are only some, and not all, embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are all within the scope of protection of this application.

[0014] The terms "first," "second," etc., used in the specification and claims of this application are intended to distinguish similar subjects and not to describe a specific order or sequence. It should be understood that the data used in this manner are interchangeable where appropriate, so that the embodiments of this application can be carried out in an order other than those illustrated or described herein. Furthermore, the subjects distinguished by "first" and "second" are generally of the same kind and do not limit the number of subjects; for example, the first subject may be one or more. In the specification and claims, "and / or" indicates at least one of the connected subjects, and the letter " / " generally indicates that the preceding and succeeding related subjects are in an "or" relationship.

[0015] It should be noted that the technologies described in the embodiments of this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but are also applicable to other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of this application are always used interchangeably, and the technologies described may be applied to the systems and radio technologies mentioned above, or to other systems and radio technologies. The following description uses the New Radio (NR) system for illustrative purposes, and uses NR terminology in most of the following descriptions. However, these technologies can be applied to applications other than NR systems, such as sixth-generation radio (6 th It may be applied to 6G (Generation 1) communication systems.

[0016] Figure 1 shows a block diagram of a wireless communication system to which an embodiment of this application can be applied. The wireless communication system includes a terminal 11 and network-side equipment 12. Here, terminal 11 may also be called terminal equipment or user equipment (UE). Terminal 11 may be a mobile phone, tablet personal computer, laptop computer (or notebook computer), personal digital assistant (PDA), palmtop computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device or in-vehicle equipment (VUE), pedestrian terminal (PUE), etc. Wearable devices include bracelets, earphones, glasses, etc. It should be noted that the embodiment of this application does not limit the specific type of terminal 11. Network-side equipment 12 may be a base station or a core network. Here, a base station may also be called an access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting / receiving point (TRP), or any other appropriate term in the art, and is not limited to any particular technical term as long as the same technical effect is achieved. For the purposes of this application, only base stations in NR systems are given as examples, but this does not limit the specific types of base stations.

[0017] In addition, the related terms in this application are interpreted as follows.

[0018] I. DRX in the RRC_IDLE state In a Long Term Evolution (LTE) or 5G communication system, a UE in the RRC_IDLE state needs to detect a paging signal transmitted by a base station at a pre - arranged time. The process of detecting the paging signal is as follows. Term

[0019] Blind - detect the Physical Downlink Control Channel (PDCCH) corresponding to the P - RNTI (Paging - RNTI). If this PDCCH cannot be detected, the current detection ends. If the presence of the PDCCH can be detected, further detect the Physical Downlink Shared Channel (PDSCH) indicated by this PDCCH. If the detected PDSCH is not the paging signal of this terminal, end the detection; otherwise, the detected PDSCH is the paging signal of this user.

[0020] A terminal in the RRC_IDLE state detects the paging signal periodically. The probability of receiving the paging signal belonging to this terminal is relatively low, and the power consumption of the PDCCH and PDSCH detected each time is relatively large, which is not beneficial to the power saving of the terminal.

[0021] II. DRX in the RRC connected state The purpose of DRX is to conserve power, and terminals in DRX state do not need to continuously monitor the control channel. However, if a terminal does not monitor the control channel for an extended period, it will increase data transmission delay once data arrives. To balance power conservation and transmission delay, 5G MACs support two DRX periods, DRX long period and DRX short period, depending on the length of time the terminal monitors the channel. If the terminal's data volume is expected to be achieved relatively frequently or the operation is relatively sensitive to delay, the network can be configured so that terminals use the DRX short period. If the terminal's data volume is relatively sparse and not sensitive to delay, the network can be configured so that terminals use only the DRX long period. To facilitate the terminal's switching between DRX long period and DRX short period, the DRX long period is required to be an integer multiple of the DRX short period, thus ensuring that both continuous monitoring times (onDuration) are aligned.

[0022] To support the DRX mechanism, the base station places DRX-related timers and parameters on the terminal, specifically including the following:

[0023] 1) drx-LongCycleStartOffset: Used to set the period and offset for long DRX cycles, with the units of period and offset being milliseconds.

[0024] 2) drx-ShortCycle: Used to set the period and offset of a short DRX period, where the units of period and offset are milliseconds.

[0025] 3) drx-ShortCycleTimer: Used to control the duration for which a terminal uses a short DRX period. The unit is an integer, and it indicates that when a terminal enters a short DRX period, it must maintain an integer multiple of the short period.

[0026] 4) drx-onDurationTimer: A DRX continuous monitoring timer, during which the terminal must continuously monitor the network's PDCCH control channel. The timer unit is milliseconds.

[0027] 5) drx-SlotOffset: The terminal initiates a delay in drx-onDurationTimer, and this parameter sets the offset amount relative to the subframe origin of the DRX onDuration start time. The offset amount is an integer multiple of 1 / 32 milliseconds.

[0028] 6) drx-InactivityTimer: This DRX deactivation timer is activated after the terminal receives the first signal following scheduling of PDCCH signaling for new uplink / downlink data. During the operation period of this timer, the terminal must continuously monitor the control channel. The unit of this timer is milliseconds.

[0029] 7) drx-HARQ-RTT-TimerDL: A downlink Hybrid Automatic Repeat reQuest (HARQ) Round-Trip Time (RTT) timer, maintained based on each downlink progress, the timer length being the minimum time interval from the HARQ feedback time to receiving the HARQ retransmission for this progress. The terminal activates this timer on the first code after the HARQ NACK feedback for this progress only if it has not succeeded in decoding the data corresponding to the downlink progress. Currently, if only drx-HARQ-RTT-TimerDL and / or drx-HARQ-RTT-TimerUL are running on the terminal, the terminal does not need to monitor the PDCCH control channel. The unit of this timer is the code.

[0030] 8) drx-HARQ-RTT-TimerUL: An uplink HARQ RTT timer maintained based on each uplink progress, the length of which is the minimum time interval from the time of the push transmission to the reception of a HARQ retransmission for that progress. After an uplink push transmission, the terminal activates the uplink HARQ RTT timer for that uplink progress, and if the push transmission uses push repetition, the uplink HARQ RTT timer is activated after the first push repetition. This ensures that the base station can immediately terminate the push repetition transmission after pre-analyzing the push. The unit of this timer is a code.

[0031] 9) drx-RetransmissionTimerDL: This is a downlink retransmission timer that is activated in the next code after drx-HARQ-RTT-TimerDL times out. During the operation period of this timer, the terminal monitors the network control channel and stops this timer when it receives downlink scheduling information or a downlink configured grant for this progress. The unit of this timer is a time slot.

[0032] 10) drx-RetransmissionTimerUL: An uplink retransmission timer that is activated in the next code after drx-HARQ-RTT-TimerUL times out. During the operation period of this timer, the terminal monitors the network control channel and stops operation if it receives uplink scheduling information or uplink configured grant for this progress, where this timer unit is a time slot.

[0033] It should be explained that the above are related parameters concerning the basic mechanism of conventional DRX, and all of these parameters constitute a set of DRX configurations, and the terminal performs the corresponding intermittent reception operation according to this configuration.

[0034] As can be seen from Figure 2, time in the time domain is divided into individual continuous DRX cycles. Furthermore, as shown in Figure 3, DRX can be further divided into two different types, and in order to further reduce power consumption by blindly detecting the Paging signal or PDCCH with the above two types of DRX, we propose the concepts of a Wake-Up Signal (WUS) and a Sleep Signal (collectively referred to as a power saving signal).

[0035] 3. Energy-saving signals in RRC_IDLE or RRC_inactive state During each paging cycle in the idle state, before the Paging Occasion (PO), the base station transmits a power-saving signal to the UE, which detects this power-saving signal at the appropriate time.

[0036] If this energy-saving signal instructs the UE to detect the PDCCH at the PO time, the UE will detect the PDCCH; if this energy-saving signal does not instruct the UE to detect the PDCCH at the PO time, the terminal will not detect the PDCCH. Here, detecting the wake-up signal is less complex and more power-efficient than blind detection of the Paging signal or PDCCH.

[0037] IV. RRC_Connection Status Energy Saving Signal During each CDRX cycle while RRC_connected, before the onduration or at the start time of the onduration, the base station transmits a power-saving signal to the UE, and the UE detects this power-saving signal at the corresponding time.

[0038] Here, if this energy-saving signal instructs the UE to detect the onduration PDCCH, the UE will detect the PDCCH; if this energy-saving signal does not instruct the UE to detect the onduration PDCCH, the UE will not detect the PDCCH. Note that detecting the wake-up signal is less complex and more power-efficient than blind detection of the paging signal or PDCCH.

[0039] Figure 4 shows the wake-up signaling time flow before the CDRX on-duration. The energy-saving signals described above may be signals similar to PDCCH, or they may be sequence-related signals, such as CSI-RS or OOK (on-off keying) signals.

[0040] 5. Introduction to Sidelink The LTE system began supporting sidelink from its 12th release version onwards, which is used to transmit data directly between terminals without going through network equipment, and is known as LTE Uplink / Downlink / Sidelink, as shown in Figure 5.

[0041] The LTE sidelink design can be applied to specific public safety services (e.g., emergency communications in disaster areas such as fires or earthquakes) or vehicle-to-everything (V2X) communications. Vehicle-to-everything communications include various services such as basic safety class communications, advanced (autonomous) driving, formations, and sensor extensions. Because LTE sidelink only supports broadcast communications, it is mainly used for basic safety communications, while advanced V2X services with strict QoS requirements in terms of latency and reliability are supported by NR sidelink.

[0042] 5G NR systems may be used in operating frequency bands above 6GHz that LTE does not support, and support larger operating bandwidths. However, current versions of NR systems only support interfaces between base stations and terminals, and do not yet support the Sidelink interface for direct communication between terminals.

[0043] 6. Sidelink transmission format Current Sidelink transmissions are mainly divided into several transmission formats: broadcast, groupcast, and unicast. Unicast is, as the name suggests, one-to-one transmission. Groupcast is one-to-many transmission. Broadcast is also one-to-many transmission, but broadcast does not have the concept of UEs belonging to the same group.

[0044] 7. Currently, Sidelink unicast and groupcast communications support the physical layer HARQ feedback mechanism.

[0045] 1. Resource allocation modes: mode 1 and mode 2 Sidelink UE's resource allocation modes can be broadly divided into the following two types:

[0046] 1) Base Station Scheduling Mode (Mode 1): BS schedules SL resource(s) to be used by UE for SL transmission(s). This is controlled by network-side equipment (base stations) and allocates resources to each UE.

[0047] 2) UE Autonomous Mode (Mode 2): The UE determines, i.e., the BS does not schedule, and selects SL transmission resource(s) within the SL resources configured by the BS / network or pre-configured SL resources. Each UE autonomously selects the resources.

[0048] 8. Sidelink Groupcast HARQ Feedback Sidelink HARQ feedback is sent and received over the PSFCH channel. Currently, two options (or types) are defined: the first is that multiple UEs share the PSFCH resource and collectively send NACKs or no feedback over the PSFCH; the second option is that each UE that needs to send feedback has its own dedicated PSFCH resource and can send ACKs or NACKs over it. For the first option (type), whether a UE sends feedback is determined by the UE's location, and the feedback message should only be sent after the UE's location meets the requirements.

[0049] In the following sections, the control method for intermittent reception according to the embodiment of this application will be described in detail with reference to drawings, specific embodiments, and their application scenarios.

[0050] This application provides a method for controlling intermittent reception, and Figure 6 is a flowchart of the intermittent reception control method in an embodiment of this application. This method is In a sidelink-based transmission process, step S602 is a step in which a first terminal performs a first operation, wherein the first operation includes at least one of determining the transmission status of a hybrid automatic retransmission request (HARQ) feedback by the first terminal and decoding a data packet by the first terminal. The procedure includes step S604, which determines whether the first terminal activates a timer used to control sidelink intermittent reception based on the result of the first operation.

[0051] Steps S602 and S604 in the embodiment of this application enable the first terminal to determine whether to determine the transmission status of a hybrid automatic retransmission request (HARQ) feedback and / or whether to activate a timer used for controlling intermittent sidelink reception based on the result of decoding a data packet by the first terminal, thereby enabling control of intermittent reception DRX on the sidelink, and thereby solving the problem in the prior art where the DRX mechanism is used only for uplink and downlink between network-side equipment and terminals, resulting in a relatively single application scenario for DRX deployment.

[0052] In an optional embodiment of the embodiments of this application, before the first terminal relating to step S602 performs the first operation, the method in the embodiments of this application Step S601 may further include the first terminal receiving Sidelink Control Information (SCI) transmitted by the second terminal. Here, SCI is, It is used to instruct the first terminal to enable HARQ, to use negative-only acknowledgement mode, or to use negative-positive acknowledgement mode.

[0053] It should be noted that the steps in the methods of the embodiments of this application are applicable to unicast, groupcast, and broadcast transmission methods in Sidelink transmission. In this application, HARQ enable may be used to indicate whether or not to allow the use of HARQ feedback. In this case, whether or not to perform HARQ feedback is terminal-dependent, and HARQ enable may further be used to indicate whether or not HARQ feedback is required. In this case, the first terminal is required to provide HARQ feedback to the second terminal. Negative-only acknowledgement may further be referred to as type-1 / option-1 in embodiments of this application, and mainly refers to the receiving terminal not sending HARQ feedback when it successfully receives or decodes a data packet, and sending a NACK when it fails to receive or decode. Regarding negative-only acknowledgement, the receiving terminal (first terminal) further calculates the distance between itself and the transmitting terminal (second terminal) or the zone in which the transmitting terminal is located, based on the information in the SCI, and compares this distance with the communication range indicated in the SCI. If this distance is greater than or equal to the communication range, the receiving terminal does not need to send any HARQ feedback. Regarding negative-positive acknowledgement, it mainly refers to the receiving terminal sending a HARQ feedback ACK when it successfully receives or decodes a data packet, and sending a NACK when it fails to receive or decode.

[0054] In addition, in an optional embodiment of the embodiments of this application, the network configuration may further enable HARQ and specify which feedback scheme (negative-only acknowledgement or negative-positive acknowledgement) to use.

[0055] The following describes this application in detail, linking SCI instructions, data decoding by the terminal, and HARQ feedback.

[0056] Selective Embodiment 1: When SCI instructs the first terminal to enable HARQ and / or use negative-positive acknowledgement, the method by which the first terminal determines whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation, according to step S604 in the embodiment of this application, Step S604-11, in which the first terminal activates a first timer among the timers used to control sidelink intermittent reception after the first terminal has transmitted HARQ feedback to the second terminal, wherein the HARQ feedback is an acknowledgment (ACK) or a negative response (NACK), The procedure may further include step S604-12, in which the first terminal activates a second timer among the timers used to control sidelink intermittent reception, if the first timer times out and the first terminal succeeds or fails in decoding the data packet. Here, during the operation period of the first timer, the first terminal does not monitor the Physical Sidelink Control Channel (PSCCH) and / or the Physical Sidelink Shared Channel (PSSCH), and during the operation period of the second timer, the first terminal monitors the PSCCH and / or PSSCH.

[0057] As can be seen from the above, by steps S604-11 and S604-12, the first terminal does not monitor PSCCH and / or PSSCH during the operation period of the first timer, and the first terminal monitors PSCCH and / or PSSCH during the operation period of the second timer, thereby achieving intermittent reception of transmission on Sidelink and achieving power saving effects.

[0058] It should be noted that the first timer in the embodiments of this application may be a drx-HARQ-RTT-TimerSL in a specific application scenario. The second timer in the embodiments of this application may be a drx-RetransmissionTimerSL in a specific application scenario. Of course, the first and second timers described above are merely illustrative examples, and other timers capable of achieving the above functions also fall within the scope of protection of this application.

[0059] The operating time of the timer in the embodiment of this application may be determined by the protocol, set by the base station, or set by the partner UE. Furthermore, in a specific application scenario, the specific numerical value of the time for the first timer may refer to the interval time between when the terminal sends the HARQ feedback and when it receives the HARQ retransmission.

[0060] The above selective embodiment 1 is, in a specific application scenario, Step S11 involves the second terminal transmitting sidelink data to the first terminal, Step S12, in which the first terminal transmits data corresponding to the SCI in which HARQ enable is instructed and negative-positive acknowledgement is to be used, Step S13 involves sending HARQ feedback to UE1 depending on whether the first terminal succeeds or fails in decoding the data packet, and then starting drx-HARQ-RTT-TimerSL after sending the feedback. The process may also include step S14, in which the drx-HARQ-RTT-TimerSL times out, the first terminal successfully decodes the data packets, and still initiates the drx-RetransmissionTimerSL.

[0061] Selective Embodiment 2: When SCI instructs the first terminal to enable HARQ and / or use negative-positive acknowledgement, the method by which the first terminal determines whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation, according to step S604 in the embodiment of this application, Step S604-21: After the first terminal has sent HARQ feedback to the second terminal, and the HARQ feedback is NACK, the first terminal activates a first timer among the timers used to control sidelink intermittent reception, and if the HARQ feedback is ACK, the first terminal does not activate the first timer. The procedure may further include step S604-22, in which the first terminal activates a second timer among the timers used to control sidelink intermittent reception if the first timer times out and the first terminal succeeds or fails in decoding the data packet. Here, during the operation period of the first timer, the first terminal does not monitor PSCCH and / or PSSCH, and during the operation period of the second timer, the first terminal monitors PSCCH and / or PSSCH.

[0062] As can be seen from steps S604-21 and S604-22 above, when the HARQ feedback is NACK, the first terminal activates the first timer, and when the first timer times out, the first terminal activates the second timer regardless of whether it succeeded or failed to decode the data packet, thereby achieving intermittent reception of transmission over Sidelink and achieving power saving effects.

[0063] The above selective embodiment 2 is, in a specific application scenario, Step S21, in which the second terminal transmits sidelink data to the first terminal, the SCI corresponding to the transmitted data is instructed to enable HARQ and to use negative-positive acknowledgement, Step S22 involves sending HARQ feedback to the second terminal depending on whether the first terminal succeeds or fails in decoding the data packet, and then starting drx-HARQ-RTT-TimerSL after sending the feedback. If drx-HARQ-RTT-TimerSL times out, step S23 may be to activate drx-RetransmissionTimerSL if the first terminal fails to decode the data packet.

[0064] Selective Embodiment 3: When SCI instructs the first terminal to enable HARQ and / or use negative-positive acknowledgement, the method by which the first terminal determines whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation, according to step S604 in the embodiment of this application, Step S604-31, wherein the first terminal transmits HARQ feedback to the second terminal, and the first terminal activates a first timer among the timers used to control sidelink intermittent reception, wherein the HARQ feedback is an affirmative response (ACK) or a negative response (NACK), The procedure may further include step S604-32, in which, if the first timer times out, the first terminal activates a second timer among the timers used to control intermittent sidelink reception. Here, during the operation period of the first timer, the first terminal does not monitor PSCCH and / or PSSCH, and during the operation period of the second timer, the first terminal monitors PSCCH and / or PSSCH.

[0065] By steps S604-31 and S604-32 described above, regardless of whether the HARQ feedback is ACK or NACK, the first terminal activates the first timer, and if the first timer times out, the first terminal activates the second timer, that is, if the first timer times out, the second timer is activated, thereby enabling intermittent reception on Sidelink and achieving power saving effects by monitoring PSCCH and / or PSSCH at time intervals.

[0066] Selective Embodiment 4: When SCI instructs the first terminal to enable HARQ and / or use negative-positive acknowledgement, the method by which the first terminal determines whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation, according to step S604 of this application, Step S604-41 may further include the first terminal activating a second timer among the timers used for controlling intermittent sidelink reception if the time required to decode the data packet exceeds a preset time, or if decoding fails. Here, the pre-set time duration includes at least one of the operating time duration of the third timer, the time duration agreed upon by the protocol, and the time duration set by the network-side equipment, and during the operating period of the second timer, the first terminal monitors PSCCH or PSSCH.

[0067] As can be seen from the above, in step S604-41 of the embodiment of this application, the second timer is activated simply because the time length for the first terminal to decode a data packet exceeds a preset time length and decoding fails. That is, by monitoring PSCCH and / or PSSCH during the operation period of this second timer, intermittent reception of Sidelink is achieved, and the objective of power saving is attained.

[0068] Selective Embodiment 5: When SCI instructs the first terminal to enable HARQ and use negative-only acknowledgement, the method by which the first terminal determines whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation, according to step S604 in the embodiment of this application, Step S604-51 may further include determining that the distance between the first terminal and the second terminal is greater than or equal to the communication range requirement, and that the first terminal does not transmit HARQ feedback and does not activate the first and second timers among the timers used to control sidelink intermittent reception. Here, during the operation period of the first timer, the first terminal does not monitor PSCCH and / or PSSCH, and during the operation period of the second timer, the first terminal monitors PSCCH and / or PSSCH.

[0069] The above selective embodiment 5 is, in a specific application scenario, Step S31, in which the second terminal transmits sidelink data to the first terminal, the SCI corresponding to the transmitted data is instructed to enable HARQ and to use negative-only acknowledgement, Step S32: Based on the information in the SCI received by the first terminal, such as information related to the zone, the first terminal calculates that the distance between itself and the second terminal (for example, by calculating the distance between the location of the second terminal and the center location of the nearest Zone indicated in the SCI) is greater than the communication range request. The procedure may include step S33 in which the first terminal does not send a NACK and does not activate drx-HARQ-RTT-TimerSL and drx-RetransmissionTimerSL.

[0070] If step S604-51 determines that the distance between the first terminal and the second terminal is greater than or equal to the communication range requirement, the first terminal does not send HARQ feedback and does not activate the first and second timers.

[0071] Selective Embodiment 6: When SCI instructs the first terminal to enable HARQ and use negative-only acknowledgement, the method by which the first terminal determines whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation, according to step S604 in the embodiment of this application, Step S604-61: When it is determined that the distance between the first terminal and the second terminal is greater than or equal to the communication range requirement, after the first terminal has successfully or failed to decode the data packet and has sent a HARQ feedback which is NACK, or after the first terminal has determined that it has successfully or failed to decode the data packet and has not sent a HARQ feedback, the first terminal activates a first timer among the timers used to control sidelink intermittent reception. The procedure may further include step S604-62, in which, if the first timer times out, the first terminal activates a second timer among the timers used to control intermittent sidelink reception. Here, during the operation period of the first timer, the first terminal does not monitor PSCCH and / or PSSCH, and during the operation period of the second timer, the first terminal monitors PSCCH and / or PSSCH.

[0072] As described in steps S604-61 and S604-62 above, when using negative-only acknowledgement, even if the distance between the first terminal and the second terminal is greater than the communication range requirement, the first terminal can start the first timer after successfully or failing to decode the data packet and sending a NACK HARQ feedback, or after the first terminal successfully or failing to decode the data packet and not sending a HARQ feedback, and if the first timer times out, it starts the second timer. In other words, even if the distance between the first terminal and the second terminal is greater than the communication range requirement, both the first and second timers can be started, enabling intermittent reception of Sidelink and achieving power-saving effects in the Sidelink transmission process.

[0073] The above selective embodiments are used in specific application scenarios. Step S41, in which the second terminal transmits sidelink data to the first terminal, wherein the SCI corresponding to the transmitted data is instructed to enable HARQ and to use negative-only acknowledgement, Step S42: The first terminal calculates, based on information in the SCI received by the first terminal, such as information related to the zone, that the distance between itself and the second terminal (for example, by calculating the distance between the location of the second terminal and the center location of the nearest Zone indicated in the SCI) is greater than the communication range request. Step S43, in which the first terminal does not send a NACK but still starts drx-HARQ-RTT-TimerSL, Step S44 may also be a step in which the first terminal starts drx-RetransmissionTimerSL if drx-HARQ-RTT-TimerSL times out.

[0074] As can be seen from the above, in steps S21 to S24, the first terminal does not perform HARQ feedback, but other groupcast terminals may perform HARQ feedback and may still activate drx-RetransmissionTimerSL to wait for retransmissions from other terminals, or for scheduling or new transmissions from other terminals.

[0075] Selective Embodiment 7: When SCI instructs the first terminal to enable HARQ and use negative-only acknowledgement, the method by which the first terminal determines whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation, according to step S604 in the embodiment of this application, Step S604-71, when it is determined that the distance between the first terminal and the second terminal is greater than or equal to the communication range requirement, the first terminal decides not to provide HARQ feedback and to activate the first timer among the timers used to control intermittent sidelink reception. The procedure may further include step S604-72, in which the first terminal activates a second timer among the timers used to control sidelink intermittent reception, if the first timer times out and the first terminal succeeds or fails in decoding the data packet. Here, during the operation period of the first timer, the first terminal does not monitor PSCCH and / or PSSCH, and during the operation period of the second timer, the first terminal monitors PSCCH and / or PSSCH.

[0076] As described in steps S604-71 and S604-72 above, when using negative-only acknowledgement, even if the distance between the first terminal and the second terminal exceeds the communication range requirement, the first terminal does not send HARQ feedback and can activate the first timer. Furthermore, if the first timer times out, the first terminal can activate the second timer even if it fails to decode the data. In other words, even if the distance between the first terminal and the second terminal exceeds the communication range requirement, both the first and second timers can be activated, enabling intermittent reception of Sidelink and achieving power-saving effects in the Sidelink transmission process.

[0077] Regarding the above-described selective embodiment 7, the steps in a specific application scenario are as follows: Step S51, in which the second terminal transmits sidelink data to the first terminal, wherein the SCI corresponding to the transmitted data is instructed to enable HARQ and to use negative-only acknowledgement, Step S52: Based on the information in the SCI received by the first terminal, such as information related to the zone, the first terminal calculates that the distance between itself and the second terminal (for example, by calculating the distance between the location of the second terminal and the center location of the nearest Zone indicated in the SCI) is greater than the communication range request. Step S53, in which the first terminal does not send a NACK but still starts drx-HARQ-RTT-TimerSL, If drx-HARQ-RTT-TimerSL times out, step S54 may also be a step in which the first terminal activates drx-RetransmissionTimerSL when decoding fails, based on the decoding status of the data packet corresponding to the HARQ process.

[0078] Selective Embodiment 8: When SCI instructs the first terminal to enable HARQ and use negative-only acknowledgement, the method by which the first terminal determines whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation, according to step S604 of the embodiment of this application, Step S604-81 may further include the first terminal activating a second timer among the timers used for controlling sidelink intermittent reception if the time required to decode a data packet corresponding to the HARQ progress exceeds a preset time and decoding fails. Here, the pre-set time duration includes at least one of the operating time duration of the third timer, the time duration agreed upon by the protocol, and the time duration set by the network-side equipment, and during the operating period of the second timer, the first terminal monitors PSCCH or PSSCH.

[0079] As can be seen from the above, in the embodiment of this application, step S604-81 activates the second timer simply because the time it takes for the first terminal to decode a data packet exceeds a preset time and the decoding fails. That is, by monitoring PSCCH or PSSCH during the operation period of this second timer, intermittent reception of Sidelink is achieved, and the objective of power saving is attained.

[0080] Selective Embodiment 9: When SCI instructs the first terminal to enable HARQ and use negative-only acknowledgement, the method by which the first terminal determines whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation, according to step S604 in the embodiment of this application, Step S604-91, where it is determined based on SCI that the distance between the first terminal and the second terminal is smaller than the communication range requirement, the first terminal decides to send HARQ feedback. Step S604-92, after sending HARQ feedback, the first terminal activates the first timer among the timers used to control sidelink intermittent reception, The procedure may further include step S604-93, in which, if the first timer times out and the first terminal fails to decode the data packet, the first terminal activates a second timer among the timers used to control intermittent sidelink reception. Here, during the operation period of the first timer, the first terminal does not monitor PSCCH and / or PSSCH, and during the operation period of the second timer, the first terminal monitors PSCCH and / or PSSCH.

[0081] As described in steps S604-91 to S604-93 above, when using negative-only acknowledgement, even if the distance between the first terminal and the second terminal is smaller than the communication range requirement, the first terminal decides to send HARQ feedback, and after sending HARQ, the first terminal starts the first timer, and if the first timer times out, the first terminal can start the second timer even if it fails to decode the data. In other words, even if the distance between the first terminal and the second terminal is smaller than the communication range requirement, both the first and second timers can be started, realizing intermittent reception in Sidelink and achieving a power-saving effect in the Sidelink transmission process.

[0082] The above selective embodiment 9 is, in a specific application scenario, Step S61, in which the second terminal transmits sidelink data to the first terminal, wherein the SCI corresponding to the transmitted data is instructed to enable HARQ and to use negative-only acknowledgement, Step S62: The first terminal calculates, based on the information received in the SCI, such as information related to the zone, that the distance between itself and the UE2 (for example, by calculating the distance between the location of the UE2 and the center location of the nearest Zone indicated in the SCI) is less than or equal to the communication range request. Step S63 involves the first terminal failing to decode the data packet, sending a NACK, and activating drx-HARQ-RTT-TimerSL. Step S64 may also be a step in which the first terminal starts drx-RetransmissionTimerSL if drx-HARQ-RTT-TimerSL times out.

[0083] As can be seen from the above selective embodiments 1 to 9, the drx-RetransmissionTimerSL may be activated when at least one of the following conditions is met.

[0084] 1) drx-HARQ-RTT-TimerSL times out, 2) Failed to decode data corresponding to the HARQ process. 3) SCI is instructed to perform a negative-positive acknowledgement, and the decoding of data corresponding to the HARQ process is successful.

[0085] Selectively, the first operation in the embodiments of this application may further include determining whether the first terminal has already performed a transmission on the physical sidelink shared channel PSSCH, and based on this, the method by which the first terminal in step S604 of the embodiments of this application determines whether to activate a timer used for controlling sidelink intermittent reception based on the result of performing the first operation may further include the first terminal activating a timer used for controlling sidelink intermittent reception if it determines that the first terminal has already performed a transmission on the physical sidelink shared channel PSSCH.

[0086] Here, the method of PSSCH transmission includes one of the following: transmitting on a resource pool in the base station scheduling mode of resource allocation (corresponding to mode-2 above), or transmitting on configured grant or dynamic grant in the terminal autonomous mode of resource allocation (corresponding to mode-1 above).

[0087] It should be explained that, regarding the intermittent reception control method according to the embodiment of this application, the execution unit may be an intermittent reception control device, or it may be a control module for executing the intermittent reception method in this intermittent reception control device. In the embodiment of this application, the intermittent reception control device according to the embodiment of this application will be described as an example in which the intermittent reception control device executes the intermittent reception control method.

[0088] Figure 7 is a schematic diagram of the structure of the control device for intermittent reception in an embodiment of this application, and this device is In a sidelink-based transmission process, an executable module 72 for performing a first operation, the first operation comprising at least one of determining the transmission status of a hybrid automatic retransmission request (HARQ) feedback and decoding a data packet, The system includes a decision module 74 for determining whether to activate a timer used to control intermittent sidelink reception based on the result of the first operation.

[0089] Selectively, the apparatus in the embodiment of this application may further include a receiving module for receiving sidelink control information SCI transmitted by a second terminal before performing a first operation. Here, SCI is used to indicate that HARQ should be enabled and that at least one of the following should be used: negative-only acknowledgement mode or negative-positive acknowledgement mode.

[0090] If the SCI selectively instructs to enable HARQ and / or use negative-positive acknowledgement, the decision module 74 in the embodiment of the present application may further include a first activation unit for activating a first timer among the timers used to control sidelink intermittent reception, after sending HARQ feedback to a second terminal, wherein the HARQ feedback is an affirmative acknowledgment (ACK) or a negative acknowledgment (NACK), and a second activation unit for activating a second timer among the timers used to control sidelink intermittent reception, if the first timer times out and the decoding of the data packet is successful or unsuccessful. Here, during the operation period of the first timer, PSCCH and / or PSSCH are not monitored, and during the operation period of the second timer, PSCCH and / or PSSCH are monitored.

[0091] If the SCI selectively instructs to enable HARQ and / or use negative-positive acknowledgement, the decision module 74 in the embodiment of the present application may further include a third activation unit for activating a first timer of the timers used to control sidelink intermittent reception, after sending HARQ feedback to a second terminal and if the HARQ feedback is NACK, the third activation unit for not activating the first timer if the HARQ feedback is ACK, and a fourth activation unit for activating a second timer of the timers used to control sidelink intermittent reception, if the first timer times out and the decoding of the data packet is successful or unsuccessful, wherein the physical sidelink control channel PSCCH or physical sidelink shared channel PSSCH is not monitored during the operation period of the first timer, and the PSCCH or PSSCH is monitored during the operation period of the second timer.

[0092] If selectively the SCI instructs to enable HARQ and / or use negative-positive acknowledgement, the decision module in the embodiment of the present application may further include a fifth activation unit for activating a first timer of the timers used to control sidelink intermittent reception, after sending HARQ feedback to a second terminal, wherein the HARQ feedback is an affirmative response ACK or a negative response NACK, and a sixth activation unit for activating a second timer of the timers used to control sidelink intermittent reception when the first timer times out, wherein PSCCH and / or PSSCH are not monitored during the operating period of the first timer, and PSCCH and / or PSSCH are monitored during the operating period of the second timer.

[0093] If the SCI selectively instructs to enable HARQ and / or use negative-positive acknowledgement, the decision module 74 in the embodiment of the present application may further include a seventh activation unit for activating a second timer among the timers used to control sidelink intermittent reception if the time for decoding a data packet exceeds a preset time or decoding fails, wherein the preset time includes at least one of the operating time of a third timer, a time agreed upon by the protocol, and a time set by the network-side equipment, and monitors PSCCH and / or PSSCH during the operating period of the second timer.

[0094] If the SCI selectively instructs to enable HARQ and use negative-only acknowledgement, the determination module 74 in the embodiment of this application may further include a first processing unit for determining whether to send HARQ feedback and not activate the first and second timers of the timers used to control sidelink intermittent reception when it determines that the distance to the second terminal is greater than or equal to the communication range requirement. Herein, during the operating period of the first timer, PSCCH and / or PSSCH are not monitored, and during the operating period of the second timer, PSCCH and / or PSSCH are monitored.

[0095] If the SCI selectively instructs to enable HARQ and use negative-only acknowledgement, the decision module 74 in the embodiment of this application may further include a second processing unit for determining whether to not send the HARQ feedback and to activate a first timer of the timers used to control sidelink intermittent reception when it determines that the distance to the second terminal is greater than or equal to the communication range requirement, and an eighth activation unit for activating a second timer of the timers used to control sidelink intermittent reception when the first timer times out. Here, PSCCH and / or PSSCH are not monitored during the operating period of the first timer, and PSCCH and / or PSSCH are monitored during the operating period of the second timer.

[0096] If the SCI selectively instructs to enable HARQ and use negative-only acknowledgement, the determination module 74 in the embodiment of the present application may further include a third processing unit for activating a first timer of the timers used to control sidelink intermittent reception after determining that the distance to the second terminal is greater than or equal to the communication range requirement, after successfully or unsuccessfully decoding a data packet and sending a NACK HARQ feedback, or after determining that successfully or unsuccessfully decoding a data packet and not sending the HARQ feedback; and a ninth activation unit for activating a second timer of the timers used to control sidelink intermittent reception if the first timer times out and successfully or unsuccessfully decoding a data packet. The first timer does not monitor PSCCH and / or PSSCH during its operating period, and the second timer monitors PSCCH and / or PSSCH during its operating period.

[0097] If the SCI selectively instructs to enable HARQ and use negative-only acknowledgement, the decision module 74 in the embodiment of this application may further include a tenth activation unit for activating a second timer among the timers used to control sidelink intermittent reception if the time length for decoding a data packet corresponding to a HARQ progress exceeds a preset time length and decoding fails. Herein, the preset time length includes at least one of the operating time length of a third timer, a time length agreed upon by the protocol, and a time length set by the network-side equipment, and monitors PSCCH and / or PSSCH during the operating period of the second timer.

[0098] Selectively, when the SCI instructs to enable HARQ and use negative-only acknowledgement, the decision module 74 in the embodiment of this application may further include a fourth processing unit for deciding to send HARQ feedback when the SCI determines that the distance to the second terminal is less than the communication range requirement; an eleventh activation unit for activating a first timer of the timers used to control sidelink intermittent reception after sending the HARQ feedback; and a twelfth activation unit for activating a second timer of the timers used to control sidelink intermittent reception if the first timer times out and fails to decode the data packet. Herein, PSCCH and / or PSSCH are not monitored during the operating period of the first timer, and PSCCH and / or PSSCH are monitored during the operating period of the second timer.

[0099] Selectively, the first operation in the embodiments of this application further includes determining whether transmission on the physical sidelink shared channel PSSCH has already been performed. Based on this, the determination module 74 in the embodiments of this application may further include a thirteenth activation unit for activating a timer used for controlling sidelink intermittent reception if it determines that transmission on the physical sidelink shared channel PSSCH has already been performed.

[0100] Selectively, the PSSCH transmission method includes transmitting over a resource pool in the base station scheduling mode of resource allocation, and transmitting over placement authorization or dynamic authorization in the terminal autonomous mode of resource allocation.

[0101] The apparatus in the embodiment of this application makes it possible to determine whether to determine the transmission status of hybrid automatic retransmission request (HARQ) feedback and / or whether to activate a timer used for controlling intermittent sidelink reception in a sidelink-based transmission process, and to control whether to activate a timer used for controlling intermittent sidelink reception by controlling whether to activate a timer used for controlling intermittent sidelink reception, thereby realizing control of intermittent reception DRX on the sidelink, thereby solving the problem in conventional technology where the DRX mechanism is used only for uplink and downlink between network-side equipment and terminals, resulting in a relatively single application scenario for DRX deployment.

[0102] The control device for intermittent reception in the embodiments of this application may be a device, a component in a terminal, an integrated circuit, or a chip. This device may be a mobile terminal or a non-mobile terminal. Exemplary examples include, but are not limited to, the types of terminals 11 listed above. Non-mobile terminals may include servers, network-attached storage (NAS), personal computers (PCs), televisions (TVs), ATMs, or self-service machines, and the embodiments of this application are not specifically limited.

[0103] The intermittent reception control device in the embodiments of this application may be a device having an operating system. This operating system may be an Android operating system, an iOS operating system, or any other possible operating system, and the embodiments of this application are not specifically limited.

[0104] The control device for intermittent reception according to the embodiment of this application can implement each process realized by the embodiment of the method shown in Figure 6 and achieve the same technical effects, and to avoid repetition of the explanation, it will not be explained further here.

[0105] Selectively, as shown in Figure 8, embodiments of this application further provide a communication device 800 including a processor 801, a memory 802, and a program or instruction stored in the memory 802 and operable on the processor 801. For example, if this communication device 800 is a terminal, when this program or instruction is executed by the processor 801, each process of the embodiment of the intermittent reception control method described above can be realized and the same technical effect can be achieved. If this communication device 800 is a network-side device, when this program or instruction is executed by the processor 801, each process of the embodiment of the intermittent reception control method described above can be realized and the same technical effect can be achieved. To avoid repetition, no further explanation is provided here.

[0106] Figure 9 is a schematic diagram of the hardware structure of a terminal that realizes the embodiment of this application.

[0107] This terminal 900 includes, but is not limited to, components such as a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, and a processor 910.

[0108] As those skilled in the art will understand, the terminal 900 may further include a power supply (e.g., a battery) to power each component, and the power supply may be logically connected to the processor 910 by a power management system, thereby enabling functions such as charge / discharge management and power consumption management by the power management system. The terminal structure shown in Figure 9 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than those shown in Figure 9, or combinations of some components, or different arrangements of components, which will not be described further here.

[0109] It should be understood that, in the embodiments of this application, the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042, the graphics processor 9041 processing still images or video image data obtained by an image capture device (e.g., a camera) in video capture mode or image capture mode. The display unit 906 may include a display panel 9061, which may be arranged in the form of a liquid crystal display, organic light-emitting diodes, etc. The user input unit 907 includes a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touchscreen. The touch panel 9071 may include two parts: a touch detection device and a touch controller. The other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control buttons, switch buttons, etc.), a trackball, a mouse, or an operating lever, and will not be described further here.

[0110] In the embodiments of this application, the radio frequency unit 901 receives downlink data from network-side equipment, processes it with the processor 910, and transmits uplink data to the network-side equipment. Generally, the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0111] Memory 909 may be used to store software programs or instructions and various data. Memory 909 may mainly include a program or instruction storage area and a data storage area, where the program or instruction storage area can store an operating system, an application program or instructions necessary for at least one function (e.g., audio playback function, image playback function, etc.). Memory 909 may also include high-speed random access memory and non-volatile memory. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), or flash memory. For example, it may be at least one magnetic disk memory device, a flash memory device, or other non-volatile solid-state memory device.

[0112] The processor 910 may include one or more processing units. Optionally, the processor 910 may integrate an application processor and a modem processor. Here, the application processor primarily handles the operating system, user interface, and application programs or instructions, while the modem processor primarily handles wireless communication, such as a baseband processor. To be clear, the modem processor does not necessarily have to be integrated into the processor 910.

[0113] Here, the processor 910 is used to perform a first operation in the sidelink-based transmission process, the first operation including at least one of determining the transmission status of a hybrid automatic retransmission request HARQ feedback by the terminal 900 and decoding a data packet by the terminal 900, and determining whether to activate a timer used to control sidelink intermittent reception based on the result of performing the first operation.

[0114] In the embodiment of this application, the terminal can determine whether to determine the transmission status of the Hybrid Automatic Retransmission Request (HARQ) feedback and / or whether to activate a timer used for controlling intermittent sidelink reception based on the result of decoding the data packet in the sidelink-based transmission process. By controlling whether to activate the timer used for controlling intermittent sidelink reception, intermittent reception DRX on the sidelink is realized, thereby solving the problem in conventional technology where the DRX mechanism is used only for uplink and downlink between network-side equipment and terminals, resulting in a relatively single application scenario for DRX deployment.

[0115] Embodiments of this application further provide a readable storage medium on which a program or instruction is stored, and when this program or instruction is executed by a processor, each process of the embodiment of the intermittent reception control method described above can be realized and the same technical effects can be achieved. To avoid repetition, no further explanation is provided here.

[0116] Here, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer-readable storage media such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0117] Embodiments of this application further provide a chip comprising a processor and a communication interface, the communication interface being coupled with the processor, the processor running programs or instructions for network-side equipment, and used to implement each process of the embodiment of the intermittent reception control method described above, and achieving the same technical effects. To avoid repetition, no further explanation is provided here.

[0118] It should be understood that the chips referred to in the embodiments of this application may also be called system-level chips, system chips, chip systems, or system-on-a-chip, etc.

[0119] It should be noted that, in this specification, the terms “include,” “incorporate,” or any other variation thereof are intended to cover non-exclusive “include,” thereby including not only those elements but also other elements not explicitly listed, or elements specific to such process, method, article, or apparatus. Unless otherwise specified, the phrase “includes one of…” does not preclude the presence of other identical elements in a process, method, article, or apparatus containing that element. It should also be noted that the scope of methods and apparatus in embodiments of this application is not limited to performing functions in the illustrated or described order, but may include performing functions in a manner that is essentially simultaneous or in reverse order based on the functions involved. For example, a method may be performed in a procedure different from that described, and various steps may be added, omitted, or combined. Features described by reference to some examples may be combined with other examples.

[0120] As will be readily apparent to those skilled in the art from the above description of the embodiments, the methods of the above embodiments can be implemented in the form of software and a necessary general-purpose hardware platform. Of course, they may also be implemented in hardware, but in many cases the former is a more preferred embodiment. With this understanding in mind, the technical proposal of this application may be embodied in the form of a software product, either substantially or in part with respect to the prior art. This computer software product is stored on a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and contains some instructions for causing a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to perform the methods of each embodiment of this application.

[0121] The above describes embodiments of this application, accompanied by drawings; however, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can, by the suggestion of this application, make many forms, as long as they do not deviate from the spirit and scope protected by the claims of this application, and all of these fall within the scope of protection of this application.

Claims

1. A method for controlling intermittent reception, A transmission process based on a sidelink includes a first terminal performing a first operation, wherein the first operation includes at least one of determining the transmission status of a hybrid automatic retransmission request (HARQ) feedback by the first terminal and decoding a data packet by the first terminal. The first terminal determines whether to activate a timer used for controlling intermittent sidelink reception based on the result of the first operation, Before the first terminal performs the first operation, the control method The first terminal further includes receiving side link control information SCI transmitted by the second terminal, The aforementioned side link control information SCI is This is used to instruct the first terminal to enable a hybrid automatic retransmission request (HARQ), to use a negative response only information confirmation mode, and to use a positive / negative response information confirmation mode, When the sidelink control information SCI instructs the first terminal to enable the hybrid automatic retransmission request HARQ and to use the affirmative / negative response information confirmation mode, the first terminal decides whether to activate the timer used for controlling sidelink intermittent reception based on the result of the first operation. The first terminal transmits a hybrid automatic retransmission request (HARQ) feedback to the second terminal, after which the first terminal activates a first timer among the timers used to control sidelink intermittent reception, wherein the hybrid automatic retransmission request (HARQ) feedback is an acknowledgment (ACK) or a negation (NACK), and the first timer is drx-HARQ-RTT-TimerSL. The first timer times out and the first terminal succeeds or fails in decoding the data packet, and the first terminal activates a second timer among the timers used to control intermittent sidelink reception, wherein the second timer is drx-RetransmissionTimerSL. A control method for intermittent reception, wherein during the operation period of the first timer, the first terminal does not monitor the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH, and during the operation period of the second timer, the first terminal monitors the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH.

2. When the sidelink control information SCI instructs the first terminal to enable the hybrid automatic retransmission request HARQ and / or to use the affirmative / negative response information confirmation mode, the first terminal decides whether to activate the timer used for controlling sidelink intermittent reception based on the result of the first operation. After the first terminal transmits a hybrid automatic retransmission request (HARQ) feedback to the second terminal, and the hybrid automatic retransmission request (HARQ) feedback is a negative response (NACK), the first terminal activates the first timer among the timers used for controlling sidelink intermittent reception, and the first terminal does not activate the first timer when the hybrid automatic retransmission request (HARQ) feedback is an affirmative response (ACK). The first timer times out and the first terminal succeeds or fails in decoding the data packet, and the first terminal activates the second timer among the timers used to control intermittent sidelink reception. The control method according to claim 1, wherein during the operation period of the first timer, the first terminal does not monitor the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH, and during the operation period of the second timer, the first terminal monitors the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH.

3. When the sidelink control information SCI instructs the first terminal to enable the hybrid automatic retransmission request HARQ and / or to use the affirmative / negative response information confirmation mode, the first terminal decides whether to activate the timer used for controlling sidelink intermittent reception based on the result of the first operation. The first terminal transmits a hybrid automatic retransmission request (HARQ) feedback to the second terminal, and the first terminal then activates the first timer among the timers used to control sidelink intermittent reception, wherein the hybrid automatic retransmission request (HARQ) feedback is either an acknowledgment (ACK) or a negation (NACK). This includes, when the first timer times out, the first terminal activating the second timer, which is one of the timers used to control intermittent sidelink reception, The control method according to claim 1, wherein during the operation period of the first timer, the first terminal does not monitor the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH, and during the operation period of the second timer, the first terminal monitors the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH.

4. When the sidelink control information SCI instructs the first terminal to enable the hybrid automatic retransmission request HARQ and / or to use the affirmative / negative response information confirmation mode, the first terminal decides whether to activate the timer used for controlling sidelink intermittent reception based on the result of the first operation. The first terminal activates the second timer, which is one of the timers used to control intermittent sidelink reception, if the time required to decode a data packet exceeds a predetermined time, or if decoding fails. The control method according to claim 1, wherein the pre-set time length includes at least one of the operating time length of the third timer, the time length agreed upon by the protocol, and the time length set by the network-side equipment, and during the operating period of the second timer, the first terminal monitors the physical sidelink control channel PSCCH and / or the physical sidelink shared channel PSSCH.

5. When the sidelink control information SCI instructs the first terminal to enable the hybrid automatic retransmission request HARQ and to use the negative response only information confirmation mode, the first terminal decides whether to activate the timer used for controlling sidelink intermittent reception based on the result of the first operation. The first terminal determines that the distance between the first terminal and the second terminal is greater than or equal to the communication range requirement, and it is determined that the first terminal will not transmit the hybrid automatic retransmission request (HARQ) feedback and will not activate the first timer and the second timer among the timers used to control sidelink intermittent reception. The control method according to claim 1, wherein during the operation period of the first timer, the first terminal does not monitor the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH, and during the operation period of the second timer, the first terminal monitors the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH.

6. When the sidelink control information SCI instructs the first terminal to enable the hybrid automatic retransmission request HARQ and to use the negative response only information confirmation mode, the first terminal decides whether to activate the timer used for controlling sidelink intermittent reception based on the result of the first operation. When it is determined that the distance between the first terminal and the second terminal is greater than or equal to the communication range requirement, the first terminal decides not to send the hybrid automatic retransmission request (HARQ) feedback and to activate the first timer among the timers used to control sidelink intermittent reception, This includes, when the first timer times out, the first terminal activating the second timer, which is one of the timers used to control intermittent sidelink reception, The control method according to claim 1, wherein during the operation period of the first timer, the first terminal does not monitor the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH, and during the operation period of the second timer, the first terminal monitors the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH.

7. When the sidelink control information SCI instructs the first terminal to enable the hybrid automatic retransmission request HARQ and to use the negative response only information confirmation mode, the first terminal decides whether to activate the timer used for controlling sidelink intermittent reception based on the result of the first operation. When it is determined that the distance between the first terminal and the second terminal is greater than or equal to the communication range request, after successfully or failing to decode the data packet and sending a hybrid automatic retransmission request HARQ feedback which is a negative response NACK, or after the first terminal has determined that it has successfully or failed to decode the data packet and has not sent the hybrid automatic retransmission request HARQ feedback, the first terminal activates the first timer among the timers used to control sidelink intermittent reception, The first timer times out and the first terminal succeeds or fails in decoding the data packet, and the first terminal activates the second timer among the timers used to control intermittent sidelink reception. The control method according to claim 1, wherein during the operation period of the first timer, the first terminal does not monitor the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH, and during the operation period of the second timer, the first terminal monitors the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH.

8. When the sidelink control information SCI instructs the first terminal to enable the hybrid automatic retransmission request HARQ and to use the negative response only information confirmation mode, the first terminal decides whether to activate the timer used for controlling sidelink intermittent reception based on the result of the first operation. The first terminal activates the second timer among the timers used for controlling sidelink intermittent reception if the time required to decode a data packet corresponding to a hybrid automatic retransmission request (HARQ) progress exceeds a preset time and decoding fails. The control method according to claim 1, wherein the pre-set time length includes at least one of the operating time length of the third timer, the time length agreed upon by the protocol, and the time length set by the network-side equipment, and during the operating period of the second timer, the first terminal monitors the physical sidelink control channel PSCCH and / or the physical sidelink shared channel PSSCH.

9. When the sidelink control information SCI instructs the first terminal to enable the hybrid automatic retransmission request HARQ and to use the negative response only information confirmation mode, the first terminal decides whether to activate the timer used for controlling sidelink intermittent reception based on the result of the first operation. When the first terminal determines, based on the sidelink control information SCI, that the distance between the first terminal and the second terminal is smaller than the communication range request, the first terminal decides to transmit the hybrid automatic retransmission request (HARQ) feedback, After transmitting the aforementioned hybrid automatic retransmission request (HARQ) feedback, the first terminal activates the first timer among the timers used to control sidelink intermittent reception, The first timer times out and the first terminal fails to decode the data packet, and the first terminal activates the second timer, which is used to control intermittent sidelink reception. The control method according to claim 1, wherein during the operation period of the first timer, the first terminal does not monitor the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH, and during the operation period of the second timer, the first terminal monitors the physical sidelink control channel PSCCH and / or the physical sidelink sharing channel PSSCH.

10. The first operation further includes determining whether the first terminal has already performed a transmission on the physical sidelink shared channel PSSCH, and determining whether the first terminal activates a timer used for controlling sidelink intermittent reception based on the result of the first operation. The control method according to claim 1, further comprising the first terminal activating a timer used for controlling intermittent sidelink reception when the first terminal determines that it has already performed a transmission on the physical sidelink shared channel PSSCH.

11. The transmission method for the aforementioned physical sidelink shared channel PSSCH is: Transmitting on the resource pool in the base station scheduling mode for resource allocation, The control method according to claim 10, further comprising transmitting on a terminal autonomous mode placement permission or dynamic permission for the resource allocation.

12. A terminal comprising a processor, memory, and a program or instruction stored in the memory and operable on the processor, wherein when the program or instruction is executed by the processor, a step of the intermittent reception control method described in any one of claims 1 to 11 is realized.

13. A readable storage medium on which a program or instruction is stored, and which, when the program or instruction is executed by a processor, realizes the intermittent reception control method described in any one of claims 1 to 11.

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