CN117998334A

CN117998334A - Timer running method and device

Info

Publication number: CN117998334A
Application number: CN202211380055.0A
Authority: CN
Inventors: 梁敬; 黎建辉
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2024-05-07
Also published as: WO2024093792A1

Abstract

The application discloses a timer running method and a device, which belong to the field of communication, and the timer running method of the embodiment of the application comprises the following steps: at a time corresponding to the physical sidelink feedback channel PSFCH, the first communication device starts a first timer; after the first timer times out, the first communication device starts a second timer; the first Timer comprises a secondary link discontinuous reception hybrid automatic retransmission feedback Timer sl-drx-HARQ-RTT-Timer, and the second Timer comprises a secondary link discontinuous reception retransmission Timer sl-drx-RetransmissionTimer.

Description

Timer running method and device

Technical Field

The application belongs to the technical field of communication, and particularly relates to a timer running method and device.

Background

The purpose of discontinuous reception (Discontinuous Reception, DRX) is for power saving, and terminals in DRX state do not need to connect to the listening control channel.

In order to support the DRX mechanism, the base station configures a DRX related timer for the terminal; but in sidelink (Sidelink, SL) DRX, the start of the hybrid automatic repeat request (Hybrid automatic repeat request, HARQ) Round Trip Time (RTT) timer and the configuration of the physical sidelink Feedback Channel (PHYSICAL SIDELINK Feedback Channel, PSFCH) are closely related; if the DRX related timer is not started in time when the DRX related timer is not suitable for running or when the DRX related timer is required to run, the terminal cannot correctly transmit and receive data or signaling.

Disclosure of Invention

The embodiment of the application provides a timer running method and a timer running device, which can solve the problem that a terminal cannot correctly transmit and receive data or signaling due to the fact that a DRX related timer in SL DRX is run at an improper moment or is not started in time when the operation is needed.

In a first aspect, a timer running method is provided, the method including:

At a time corresponding to the physical sidelink feedback channel PSFCH, the first communication device starts a first timer;

After the first timer times out, the first communication device starts a second timer;

the first Timer comprises a secondary link discontinuous reception hybrid automatic retransmission feedback Timer sl-drx-HARQ-RTT-Timer, and the second Timer comprises a secondary link discontinuous reception retransmission Timer sl-drx-RetransmissionTimer.

In a second aspect, there is provided a timer running apparatus comprising:

The first starting module is configured to start a first timer at a time corresponding to the physical sidelink feedback channel PSFCH;

The second starting module is used for starting a second timer after the first timer is overtime;

In a third aspect, there is provided a first communications device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a fourth aspect, a first communication device is provided, including a processor and a communication interface, where the processor is configured to:

In a fifth aspect, there is provided a timer running system comprising: a source communication device, a relay device, and a target communication device; wherein the source communication device is a first communication device or the target communication device is a first communication device, the first communication device being operable to perform the first communication device method according to the first aspect.

In a sixth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the method according to the first aspect.

In a seventh aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to execute programs or instructions for implementing the method according to the first aspect.

In an eighth aspect, a computer program/program product is provided, the computer program/program product being stored in a storage medium, the computer program/program product being executed by at least one processor to implement the method as described in the first aspect.

In the embodiment of the application, the starting time of the DRX related Timer in SL DRX is determined by determining that the SL-DRX-HARQ-RTT-Timer is started at the time corresponding to PSFCH and determining that the SL-DRX-RetransmissionTimer is started after the SL-DRX-HARQ-RTT-Timer is overtime, so that the reliability of data transceiving or signaling transceiving of the terminal is improved.

Drawings

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable;

Fig. 2 is one of schematic diagrams of a DRX cycle provided by the related art;

FIG. 3 is a second schematic diagram of a DRX cycle provided by the related art;

FIG. 4 is a schematic flow chart of a method for running a timer according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a timer running method according to an embodiment of the present application;

FIG. 6 is a second schematic diagram of a timer running method according to an embodiment of the present application;

FIG. 7 is a third schematic diagram of a timer running method according to an embodiment of the present application;

FIG. 8 is a diagram of a timer running method according to an embodiment of the present application;

Fig. 9 is a schematic structural diagram of a timer running device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application;

Fig. 11 is a schematic hardware structure of a first communication device implementing an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for exemplary purposes and NR terminology is used in much of the following description, but these techniques may also be applied to applications other than NR system applications, such as 6 th Generation (6G) communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a Mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side device called a notebook, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a palm Computer, a netbook, an ultra-Mobile Personal Computer (ultra-Mobile Personal Computer, UMPC), a Mobile internet appliance (Mobile INTERNET DEVICE, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) device, a robot, a wearable device (Wearable Device), a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (home device with a wireless communication function, such as a refrigerator, a television, a washing machine, a furniture, etc.), a game machine, a Personal Computer (Personal Computer, a PC), a teller machine, or a self-service machine, etc., and the wearable device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may include an access network device or a core network device, where the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function, or a radio access network element. Access network device 12 may include a base station, a WLAN access Point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access Point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a Basic service set (Basic SERVICE SET, BSS), an Extended service set (Extended SERVICE SET, ESS), a home node B, a home evolved node B, a transmission and reception Point (TRANSMITTING RECEIVING Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility MANAGEMENT ENTITY, MME), access Mobility management functions (ACCESS AND Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and Charging Rules Function (PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified DATA MANAGEMENT, UDM), unified data warehousing (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. It should be noted that, in the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

The following will be described first:

(1)sidelink；

A long term evolution (Long Term Evolution, LTE) system may support sidelink (sidelink, or sidelink, etc.) for direct data transmission between User Equipment (UE), such as terminals, without a network device.

The UE transmits sidelink Control information (Sidelink Control Information, SCI) over a physical sidelink Control Channel (PHYSICAL SIDELINK Control Channel, PSCCH), scheduling transmission of a physical sidelink shared Channel (PHYSICAL SIDELINK SHARED CHANNEL, PSSCH) to transmit data. The transmission is in a broadcast form, and the receiving end does not feed back whether the reception is successful to the transmitting end.

LTE SIDELINK is designed to support two resource allocation modes, namely a scheduled resource allocation (Scheduled resource allocation) mode and an autonomous resource selection (autonomous resource selection) mode. The former is controlled by the network side equipment and allocates resources for each UE, and the latter is autonomously selected by the UE.

LTE may support sidelink carrier aggregation (Carrier Aggregation, CA). LTE SIDELINK, unlike Uu interfaces (i.e., downlink and uplink), have no division of primary carrier (Primary component carrier, PCC) and secondary carrier (Secondary component carrier, SCC). The UE in autonomous resource selection mode performs resource awareness (sensing) and resource reservation on each CC independently.

LTE SIDELINK are designed for use in specific public safety transactions (e.g., emergency communications at disaster sites such as fire or earthquake), or internet of vehicles (vehicle to everything, V2X) communications, etc. The internet of vehicles communication includes various services such as basic security type communication, advanced (automatic) driving, formation, sensor expansion, and the like. Since LTE SIDELINK only supports broadcast communications, it is mainly used for basic security class communications, and other advanced V2X services will be supported through NR SIDELINK.

The 5G NR system can be used for the working frequency band above 6GHz which is not supported by LTE, supports larger working bandwidth, can support the interface between the base station and the terminal, and does not support Sidelink interface for direct communication between the terminals.

Specifically, in the ProSe network architecture, a communication interface between terminals is called a PC5 interface, and an interface where the terminals are connected with access network devices such as E-UTRAN is called a Uu interface.

(2) A transmission form of the sidelink;

current sidelink transmissions are also mainly broadcast (multicast), multicast (groupcast), and unicast (unicasting) in several transmission formats. Unicast may be a transmission of one to one. Multicast may be a one to management transmission. The broadcast may be a one to many transmission, but the broadcast does not have the concept that the UEs belong to the same group.

In the related art, sidelink unicast and multicast communications support the physical layer HARQ feedback mechanism.

NR SIDELINK defines two modes, one is mode1, the base station schedules resources, and one is mode2, the UE can decide on its own what resources to use for transmission, where the resource information may come from a broadcast message or a pre-configuration of the base station. The UE may be mode1 and/or mode2 if operating within the range of the base station and having an RRC connection with the base station, and may only operate in mode2 if operating within the range of the base station but not having an RRC connection with the base station. If the UE is out of range of the base station, then it can only operate in mode2 and V2X transmission is performed according to pre-configured information. mode2 can also be further divided into 2a, 2b, 2c, and 2d.

(3) A resource pool;

in the related art, when V2X is transmitted, there is a concept of "resource pool", where the resource pool is sent or preconfigured by the network side, and the resource pool includes resources used for transmission and many transmission related parameters, for example, in LTE, an offset value of a first subframe of the resource pool, a bitmap corresponding to the resource pool, whether PSCCH and PSSCH will be transmitted in adjacent RBs, the number of subchannels, the size of each subchannel, a minimum RB index value corresponding to a PSCCH pool, an S-RSSI threshold for CBR measurement, and a region identifier.

In the related art, the network side may configure an abnormal resource pool (exceptional pool) in addition to the normal transmission resource pool for the UE, where the abnormal resource pool is used in some special situations, such as in a handover process, or in the occurrence of RLF (radio link failure radio link failure), or in a process of converting from IDLE to CONNECTED state, etc.

For UEs under different network coverage, the resource pool and corresponding resources may be selected based on network scheduling, or the resource pool may be selected autonomously based on pre-configuration. The selection of the resource pool may require that the resource pool associated with the region in which the UE is located is selected in consideration of the region. While the autonomous selection of resources in the resource pool is mainly based on the sending mechanism, random selection is also possible (e.g. for the selection of resources in the abnormal resource pool).

(4) DRX in RRC connected state under Uu interface;

If the terminal does not listen to the control channel for a long time, the delay of data transmission will be increased once there is data. In order to achieve both power saving and transmission delay, the 5G MAC supports two DRX cycles, namely a DRX long cycle and a DRX short cycle, according to the length of time for a terminal to monitor a channel. If the predicted terminal data amount is more frequent or the service is more sensitive to time delay, the network can configure the terminal to use the DRX short period; if the predicted terminal data size is sparse and delay insensitive, the network can configure the terminal to use only DRX long periods. To facilitate the terminal to make a DRX long cycle/DRX short cycle handover, the DRX long cycle may be required to be an integer multiple of the DRX short cycle, thus ensuring continuous listening time (onDuration) alignment of the two.

In order to support the DRX mechanism, the base station configures a DRX related timer and parameters for the terminal, which may specifically include at least one of the following:

DRX-LongCycleStartOffset, period and offset for configuring long DRX period, the unit of period and offset is millisecond;

DRX-ShortCycle, period and offset for configuring short DRX cycle, unit of period and offset is millisecond;

the DRX-ShortCycleTimer is used for controlling the duration of the terminal using the short DRX period, the unit is an integer, and once the terminal enters the short DRX period, the integer multiple of the short period is maintained;

DRX-onduration timer, during which the terminal needs to continuously monitor the PDCCH control channel of the network. The timer unit is milliseconds;

The delay of starting or restarting the DRX-onDuration timer by the terminal, setting the offset of the starting time of the DRX onDuration relative to the starting point of the subframe by the parameter, wherein the offset is an integer multiple of 1/32 millisecond;

DRX inactivity timer. The method comprises the steps that a timer is started or restarted at a first symbol after a terminal receives a PDCCH signaling aiming at uplink/downlink new data, and the terminal needs to monitor a control channel continuously during the running period of the timer, wherein the unit of the timer is millisecond;

drx-HARQ-RTT-TimerDL: a downlink HARQ RTT timer maintained on a per downlink procedure basis, the timer length being the minimum time interval from the HARQ feedback moment to the HARQ retransmission for that procedure. The terminal starts or restarts the timer at the first symbol after the HARQ NACK feedback for the process only if the data corresponding to the downstream process is not successfully decoded. If the current terminal only runs the drx-HARQ-RTT-TimerDL and/or the drx-HARQ-RTT-TimerUL, the terminal does not need to monitor the PDCCH control channel, and the timer unit is a symbol;

drx-HARQ-RTT-TimerUL an uplink HARQ RTT timer is maintained on a per uplink procedure basis, the timer length being the minimum time interval from the PUSCH transmission time to the reception of the HARQ retransmission for that procedure. After uplink PUSCH transmission, the terminal starts or restarts an uplink HARQ RTT timer for the uplink process, and if PUSCH transmission uses PUSCH repetition, the uplink HARQ RTT timer is started or restarted after PUSCH repetition for the first time, so as to ensure that the base station can timely terminate PUSCH repetition transmission after parsing out PUSCH in advance. The timer unit is a symbol;

And drx-RetransmissionTimerDL, a downlink retransmission timer, starting or restarting the next symbol after the drx-HARQ-RTT-TimerDL is overtime. During the running of the timer, the terminal listens to the control channel of the network, and if downlink scheduling information or downlink configured grant for the process is received, the timer is stopped. The timer unit is a time slot;

And drx-RetransmissionTimerUL, an uplink retransmission timer, and starting or restarting the timer by the next symbol after the drx-HARQ-RTT-TimerUL is overtime. During the running period of the timer, the terminal monitors a control channel of the network, and if uplink scheduling information or uplink configured grant aiming at the process is received, the terminal stops running. The timer unit is a time slot.

The basic mechanism of the DRX and related parameters may form a DRX configuration, according to which the UE may perform a corresponding discontinuous reception operation, fig. 2 is one of schematic diagrams of the DRX Cycle provided by the related art, and fig. 3 is the second schematic diagram of the DRX Cycle provided by the related art, and as shown in fig. 2 and 3, the time is divided into consecutive DRX cycles in the time domain. The operation mechanism of the DRX related timer in SLDRX is not known in the related art.

Note that, the DRX related timer in the SLDRX scenario in the present application may be started by the receiving end (the target communication device) in the SL link or may be started by the transmitting end (the source communication device) in the SL link, which is not particularly limited in the present application.

The timer running method and the timer running device provided by the embodiment of the application are described in detail below through some embodiments and application scenes thereof with reference to the accompanying drawings.

Fig. 4 is a flow chart of a timer running method according to an embodiment of the present application, as shown in fig. 4, the method includes the following steps:

step 400, at a time corresponding to the physical sidelink feedback channel PSFCH, the first communication device starts a first timer;

alternatively, the first communication device may be any one of the terminals in the SL.

Alternatively, the first communication device may be a receiving end.

Alternatively, the first communication device may be a transmitting end.

Alternatively, the first communication device may be a UE at the receiving end.

Alternatively, the first communication device may be a UE of the transmitting end.

Alternatively, the resources of PSFCH may be preconfigured by radio resource control (Radio Resource Control, RRC).

Alternatively, the network side may configure one PSFCH resource for the first communication device through RRC.

Alternatively, in the case where the first communication device is configured with only one PSFCH resource, the first communication device may start the first timer at the time corresponding to PSFCH.

Alternatively, the network side may configure the first communication device with the plurality PSFCH of resources through RRC.

Alternatively, in the case where the first communication device is configured with the plurality PSFCH of resources, the first communication device may start the first timer at a time corresponding to at least one PSFCH of the plurality PSFCH, that is, may start the first timer at least once.

Optionally, the first Timer may include a dl-drx-HARQ-RTT-Timer, or any Timer or other setting having a function similar to that of the sl-drx-HARQ-RTT-Timer, which is not limited by the embodiment of the present application.

Alternatively, the first timer may be used to define: during transmission (except for broadcast transmission) of each sidelink: the shortest duration before SL HARQ retransmission expected by the MAC entity (per Sidelink process except for the broadcast transmission:the minimum duration before an SL HARQ retransmission is expected by the MAC entity).

Step 410, after the first timer expires, the first communication device starts a second timer.

Alternatively, the second timer may include a sidelink discontinuous reception retransmission timer sl-drx-RetransmissionTimer, or any timer or other arrangement having a similar function as sl-drx-RetransmissionTimer, which is not limited by the embodiment of the present application.

Alternatively, the second timer may be used to define: during transmission (except for broadcast transmission) of each sidelink: maximum duration before receiving SL retransmissions (per Sidelink process except for the broadcast transmission:the maximum duration until an SL retransmission is received).

Alternatively, in the case where the first communication device is configured with only one PSFCH resource, the first communication device may start the first timer at the time corresponding to PSFCH, and may start the second timer after the first timer expires.

Optionally, in the case of starting the first timer at least once (for example, K times, K being a positive integer smaller than N), the first communication device may further start the second timer after at least one of the K times starts the first timer to timeout.

In the embodiment of the application, the first electronic device can clearly know under what condition the sl-drx-HARQ-RTT-Timer and the sl-drx-RetransmissionTimer should be started, and can realize correct data or signaling transceiving.

Optionally, the first communication device is configured with at least N PSFCH resources, and the first communication device starts a first timer at a time corresponding to PSFCH, including:

At a time corresponding to the first PSFCH, the first communication device starts a first timer, where the first PSFCH is any one or more of at least N PSFCH, and N is greater than or equal to 2.

Alternatively, in the case where the first communication device is configured with the plurality PSFCH of resources, the first communication device may start the first timer at a time corresponding to a first PSFCH of the plurality PSFCH, which first PSFCH may be any one or more of the at least N PSFCH.

For example, in the case where the first communication device is configured with the plurality PSFCH of resources, the first communication device may start the first timer at a time corresponding to the first or the L PSFCH of the plurality PSFCH, where L is a positive integer less than or equal to N.

Optionally, the first communication device starts the first timer at a time corresponding to PSFCH, and at least one of the following is included:

at a time corresponding to at least one second PSFCH, the first communication device restarts the first timer; wherein, in the time domain, the transmission resource of the second PSFCH is located after the transmission resource of the first PSFCH;

In the case where the running time of the second timer coincides at least partially in time domain with the transmission resource of the third PSFCH, the first communication device prohibits restarting the first timer at a time corresponding to the third PSFCH;

In the case that the running time of the second timer at least partially coincides with the transmission resource of the fourth PSFCH in the time domain, the first communication device restarts the first timer at a time corresponding to the fourth PSFCH and stops the second timer whose running time at least partially coincides with the transmission resource of the fourth PSFCH in the time domain;

Wherein the third PSFCH is any one of the second PSFCH and the fourth PSFCH is any one of the second PSFCH.

Optionally, after the first timer is started at the time corresponding to the first PSFCH, the first timer may also be restarted at the time corresponding to the at least one second PSFCH.

Optionally, after the first timer is started at the time corresponding to the first or the L PSFCH th, the first timer may be restarted at the time corresponding to the subsequent at least one second PSFCH.

For example, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH th, and the sl-drx-HARQ-RTT-Timer may be restarted at the time corresponding to each PSFCH.

For example, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and the sl-drx-HARQ-RTT-Timer may be restarted at any one or more of the time corresponding to PSFCH.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH th, and at the time corresponding to each PSFCH next, it is determined whether to restart the sl-drx-HARQ-RTT-Timer; the judgment principle is as follows; if the next PSFCH resource exists in the running period of the sl-drx-RetransmissionTimer triggered to start after the sl-drx-HARQ-RTT-Timer is started at the time corresponding to the previous PSFCH is overtime, the sl-drx-HARQ-RTT-Timer is not restarted, otherwise, the sl-drx-HARQ-RTT-Timer can be restarted.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH th, and at the time corresponding to at least one PSFCH next, it is determined whether to restart the sl-drx-HARQ-RTT-Timer; the judgment principle is as follows: if the next PSFCH resource exists in the running period of the sl-drx-RetransmissionTimer triggered to start after the sl-drx-HARQ-RTT-Timer is started at the time corresponding to the previous PSFCH is overtime, the sl-drx-HARQ-RTT-Timer is not restarted, otherwise, the sl-drx-HARQ-RTT-Timer can be restarted.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH th, and the sl-drx-HARQ-RTT-Timer may be restarted at the time corresponding to at least one PSFCH next; the exceptions are: if there is a next PSFCH resource during the sl-drx-RetransmissionTimer run, then the sl-drx-HARQ-RTT-Timer is not restarted.

Optionally, fig. 5 is a schematic diagram of a timer running method according to an embodiment of the present application, as shown in fig. 5, the initial transmission may be a first or an L PSFCH th resource or a transmission location of a first or an L PSFCH th resource, and the feedback resource may be a PSFCH resource; the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH th (RTT start), and restarted at the time corresponding to each PSFCH next (RTT start); the exceptions are: if there is a next PSFCH resource during the sl-drx-RetransmissionTimer run (corresponding to retxTimer in fig. 5), then the sl-drx-HARQ-RTT-Timer is not restarted.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH th, and at the time corresponding to each PSFCH next, it is determined whether to restart the sl-drx-HARQ-RTT-Timer; the judgment principle is as follows; if the next PSFCH resource exists in the running period of the sl-drx-RetransmissionTimer triggered to start after the sl-drx-HARQ-RTT-Timer is started at the time corresponding to the previous PSFCH is overtime, restarting the sl-drx-HARQ-RTT-Timer, and stopping the running sl-drx-HARQ-RTT-Timer.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH th, and at the time corresponding to at least one PSFCH next, it is determined whether to restart the sl-drx-HARQ-RTT-Timer; the judgment principle is as follows: if the next PSFCH resource exists in the running period of the sl-drx-RetransmissionTimer triggered to start after the sl-drx-HARQ-RTT-Timer is started at the time corresponding to the previous PSFCH is overtime, restarting the sl-drx-HARQ-RTT-Timer, and stopping the running sl-drx-HARQ-RTT-Timer.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH th, and the sl-drx-HARQ-RTT-Timer may be restarted at the time corresponding to at least one PSFCH next; the exceptions are: if there is a next PSFCH resource during the run of sl-drx-RetransmissionTimer, then restart the sl-drx-HARQ-RTT-Timer and stop the running sl-drx-HARQ-RTT-Timer.

Optionally, fig. 6 is a second schematic diagram of a timer running method according to the embodiment of the present application, as shown in fig. 6, the initial transmission may be a first or an L PSFCH th resource or a transmission location of a first or an L PSFCH th resource, and the feedback resource may be a PSFCH resource; the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH th (RTT start), and restarted at the time corresponding to each PSFCH next (RTT start); the exceptions are: if there is a next PSFCH resource during the run of sl-drx-RetransmissionTimer, then the sl-drx-HARQ-RTT-Timer is restarted and the running sl-drx-HARQ-RTT-Timer is stopped (corresponding to retxTimer in fig. 6).

Optionally, after the first timer expires, the first communication device starts a second timer, including at least one of:

After the first timer is started for the last time and times out, the first communication equipment starts a second timer;

After the first timer is started at any time and overtime, the first communication equipment starts a second timer;

After the first timer is started for any plurality of times and overtime, the first communication equipment starts a second timer;

After each time the first timer is started to timeout, the first communication device starts a second timer.

Alternatively, the second timer may be started after the first timer has timed out, either or both times.

Optionally, fig. 7 is a third schematic diagram of a timer running method according to an embodiment of the present application, as shown in fig. 7, the initial transmission may be a first or an L PSFCH th resource or a transmission location of a first or an L PSFCH th resource, and the feedback resource may be a PSFCH resource; the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH (rtstart), and at the time corresponding to each PSFCH next, the sl-drx-HARQ-RTT-Timer is restarted (rtstart), and the sl-drx-RetransmissionTimer is started only after the last sl-drx-HARQ-RTT-Timer times out (corresponding to retxTimer in fig. 7).

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and at the time corresponding to each PSFCH, the sl-drx-HARQ-RTT-Timer is restarted, and after any one of the sl-drx-HARQ-RTT-Timer times out, the sl-drx-RetransmissionTimer is started.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and at the time corresponding to each PSFCH, the sl-drx-HARQ-RTT-Timer is restarted, and after any multiple sl-drx-HARQ-RTT-Timer times out, the sl-drx-RetransmissionTimer is started.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and the sl-drx-HARQ-RTT-Timer may be restarted at the time corresponding to each PSFCH, and the sl-drx-RetransmissionTimer may be started after each sl-drx-HARQ-RTT-Timer times out.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and the sl-drx-HARQ-RTT-Timer may be restarted at the time corresponding to at least one PSFCH next, and the sl-drx-RetransmissionTimer may be started only after the last sl-drx-HARQ-RTT-Timer times out.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and at the time corresponding to at least one PSFCH next, the sl-drx-HARQ-RTT-Timer is restarted, and after any one of the sl-drx-HARQ-RTT-timers is overtime, the sl-drx-RetransmissionTimer is started.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and at the time corresponding to at least one PSFCH next, the sl-drx-HARQ-RTT-Timer may be restarted, and after any multiple sl-drx-HARQ-RTT-Timer times out, the sl-drx-RetransmissionTimer may be started.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and the sl-drx-HARQ-RTT-Timer may be restarted at the time corresponding to at least one PSFCH next, and the sl-drx-RetransmissionTimer may be started after each sl-drx-HARQ-RTT-Timer times out.

In one embodiment, in the case of configuration multiple PSFCH, sl-drx-HARQ-RTT-Timer is started after each PSFCH resource or after each PSFCH transmission, but sl-drx-RetransmissionTimer may be started only after the last PSFCH resource.

In one embodiment, in the case of configuration multiple PSFCH, sl-drx-HARQ-RTT-Timer is started after each PSFCH resource or after each PSFCH transmission, and sl-drx-RetransmissionTimer is started after any one of the sl-drx-HARQ-RTT-timers times out. The exception is that if sl-drx-RetransmissionTimer is running, PSFCH resources during this run or post transmission do not start sl-drx-HARQ-RTT-Timer.

In one embodiment, in the case of configuration multiple PSFCH, sl-drx-HARQ-RTT-Timer is started after each PSFCH resource or after each PSFCH transmission, and sl-drx-RetransmissionTimer is started after any one of the sl-drx-HARQ-RTT-timers times out. Further, if sl-drx-RetransmissionTimer is running and the next PSFCH resource or transmission comes, then sl-drx-RetransmissionTimer is stopped and sl-drx-HARQ-RTT-Timer is started.

In one embodiment, in the case of configuration multiple PSFCH, the first electronic device is allowed to start sl-drx-HARQ-RTT-Timer after each PSFCH resource or transmission, and to start sl-drx-RetransmissionTimer after any one of the sl-drx-HARQ-RTT-timers times out. If the first electronic device is running sl-drx-HARQ-RTT-Timer and sl-drx-RetransmissionTimer simultaneously, it may be specified that the first electronic device's behavior is to listen or not to PSCCH and/or PSSCH.

Optionally, the method further comprises:

after the X-th starting first timer is overtime, the first communication equipment starts a second timer;

After the first timer started for the Y time is overtime, the first communication equipment does not start the second timer and does not monitor PSCCH and/or PSSCH;

X and Y are positive integers less than N, X and Y are unequal, and N is the number of PSFCH configured by the first communication device.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and at the time corresponding to each PSFCH, the sl-drx-HARQ-RTT-Timer is restarted, and the sl-drx-RetransmissionTimer is started after any one or more of the sl-drx-HARQ-Timer times out (that may exist, a portion of the sl-drx-HARQ-RTT-Timer times out does not trigger the starting of the sl-drx-RetransmissionTimer), where the time-out of one or more of the sl-drx-HARQ-RTT-timers does not trigger the starting of the sl-drx-RetransmissionTimer, and the PSSCH and/or the PSSCH are not monitored after the one or more of the sl-drx-HARQ-RTT-Timer times out.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and at the time corresponding to at least one PSFCH, the sl-drx-HARQ-RTT-Timer is restarted, and the sl-drx-RetransmissionTimer is started after any one or more of the sl-drx-HARQ-RTT-timers timeout (that may exist, a portion of the sl-drx-HARQ-RTT-Timer timeout does not trigger the starting of the sl-drx-RetransmissionTimer), where the timeout of one or more of the sl-drx-HARQ-RTTs does not trigger the starting of the sl-drx-RetransmissionTimer, and the PSSCH and/or the PSSCH are not monitored after the one or more of the sl-drx-HARQ-RTT-timers timeout.

Optionally, the PSCCH and/or PSSCH representation is not listened to: no PSCCH, or no pscsch, or both PSCCH and pscsch are monitored.

It should be noted that, in the embodiment of the present application, the first communication device executes the operation of not monitoring, so as to achieve the technical effect of saving power of the device.

In one embodiment, 5 resources PSFCH (PSFCH 1, PSFCH, PSFCH, PSFCH, and PSFCH 5) are configured, the sl-drx-HARQ-RTT-Timer may be started at a time corresponding to the first PSFCH, and at a time corresponding to the next PSFCH, PSFCH, PSFCH, and PSFCH respectively, the sl-drx-HARQ-RTT-Timer may be restarted, the sl-drx-HARQ-RTT-Timer may be started after a time timeout of the sl-drx-RTT-Timer corresponding to PSFCH4, the sl-drx-RetransmissionTimer may be started after a time timeout of the sl-drx-HARQ-RTT-Timer corresponding to PSFCH, the sl-drx-RetransmissionTimer may be started after a time timeout of the sl-drx-RTT-Timer corresponding to the first PSFCH, the PSCCH and/or the PSSCH may not be monitored after a time timeout of the sl-drx-HARQ-RTT-Timer corresponding to the time corresponding to PSFCH, and the sl-drx-RTT-Timer may not be restarted at a time corresponding to the time corresponding to PSFCH, and the PSSCH may not be monitored after a time timeout of the sl-drx-RTT-Timer corresponding to the time timeout of the first PSFCH, and the PSSCH-3.

In one embodiment, 4 PSFCH resources (PSFCH, PSFCH, PSFCH, and PSFCH 4) are configured, so that the sl-drx-HARQ-RTT-Timer may be started at a time corresponding to the first PSFCH1, and the sl-drx-HARQ-RTT-Timer may be restarted at a time corresponding to the next PSFCH3 and PSFCH, the sl-drx-RetransmissionTimer may be started after the sl-drx-RTT-Timer restarted at a time corresponding to PSFCH4 is timeout, the PSCCH and/or PSSCH may not be monitored after the sl-drx-HARQ-RTT-Timer restarted at a time corresponding to PSFCH is timeout, and the PSCCH and/or PSSCH may not be monitored after the sl-drx-HARQ-RTT-Timer restarted at a time corresponding to PSFCH is timeout.

Optionally, the method further comprises:

After the first timer is started for the Z time and overtime, the first communication equipment starts an SL retransmission timer;

after the first timer is started for the W time and overtime, the first communication equipment does not start the SL retransmission timer and monitors PSCCH and/or PSSCH;

z and W are positive integers less than N, Z and W are unequal, and N is the number of PSFCH configured by the first communication device.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and at the time corresponding to each PSFCH, the sl-drx-HARQ-RTT-Timer is restarted, and the sl-drx-RetransmissionTimer is started after any one or more of the sl-drx-HARQ-Timer times out (that may exist, a portion of the sl-drx-HARQ-RTT-Timer times out does not trigger the starting of the sl-drx-RetransmissionTimer), where the time-out of one or more of the sl-drx-HARQ-RTT-timers does not trigger the starting of the sl-drx-RetransmissionTimer, and the PSSCH is monitored after the one or more of the sl-drx-HARQ-RTT-Timer times out.

Optionally, listening to PSCCH and/or PSSCH indicates: listening to the PSCCH, or to the pscsch, or to both PSCCH and pscsch.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and at the time corresponding to at least one PSFCH next, the sl-drx-HARQ-RTT-Timer is restarted, and the sl-drx-RetransmissionTimer is started after any one or more of the sl-drx-HARQ-RTT-timers timeout (that may exist, a portion of the sl-drx-HARQ-RTT-Timer timeout does not trigger the starting of the sl-drx-RetransmissionTimer), where the timeout of one or more of the sl-drx-HARQ-RTTs does not trigger the starting of the sl-drx-RetransmissionTimer, and the PSSCH is monitored after the one or more of the sl-drx-HARQ-RTT-timers timeout.

In the embodiment of the present application, the first communication device performs the listening operation, so that packet loss during the communication process can be avoided, and thus the communication quality and the communication stability can be ensured.

In one embodiment, the resources (PSFCH 1, PSFCH, PSFCH3, PSFCH, and PSFCH 5) configured with 5 PSFCH may start sl-drx-HARQ-RTT-Timer at the time corresponding to the first PSFCH1, restart sl-drx-HARQ-Timer at the time corresponding to the next PSFCH, PSFCH3, PSFCH4, and PSFCH respectively, start sl-drx-HARQ-RTT-Timer after the time corresponding to PSFCH4 has expired, start sl-drx-RetransmissionTimer after the time corresponding to PSFCH, the sl-drx-RetransmissionTimer may be started after the sl-drx-HARQ-RTT-Timer restarted at the time corresponding to PSFCH is overtime, the PSCCH and/or the PSSCH may be monitored after the sl-drx-HARQ-RTT-Timer restarted at the time corresponding to PSFCH is overtime, the PSCCH and/or the PSSCH may be monitored after the sl-drx-HARQ-RTT-Timer restarted at the time corresponding to PSFCH2 is overtime, and the PSCCH and/or the PSSCH may be monitored after the sl-drx-HARQ-RTT-Timer restarted at the time corresponding to PSFCH is overtime.

In one embodiment, 4 PSFCH resources (PSFCH, PSFCH, PSFCH, and PSFCH 4) are configured, so that the sl-drx-HARQ-RTT-Timer can be started at the time corresponding to the first PSFCH1, and the sl-drx-HARQ-RTT-Timer can be restarted at the time corresponding to the next PSFCH3 and PSFCH, the sl-drx-RetransmissionTimer can be started after the sl-drx-HARQ-RTT-Timer restarted at the time corresponding to PSFCH4 is overtime, the PSCCH and/or PSSCH can be monitored after the sl-drx-HARQ-RTT-Timer restarted at the time corresponding to PSFCH is overtime, and the PSCCH and/or PSSCH can be monitored after the sl-drx-HARQ-RTT-Timer restarted at the time corresponding to PSFCH is overtime.

Optionally, in a case where the first communication device starts the second timer after the last time the first timer has started to time out, the method further includes:

the first communication device determining not to listen to the PSCCH and/or PSSCH based on a third event;

the third event includes starting the first timer for timeout at the Q-th time, Q being a positive integer less than N.

Optionally, the sl-drx-HARQ-RTT-Timer is started at the time corresponding to the first or the L PSFCH th, and the sl-drx-HARQ-RTT-Timer is restarted at the time corresponding to each PSFCH. The sl-drx-RetransmissionTimer may be started only after the last sl-drx-HARQ-RTT-Timer times out. If the previous sl-drx-HARQ-RTT-Timer times out, the first communication device does not monitor the PSCCH and/or PSSCH.

Optionally, the sl-drx-HARQ-RTT-Timer is started at the time corresponding to the first or the L PSFCH th, and the sl-drx-HARQ-RTT-Timer is restarted at the time corresponding to at least one PSFCH next. The sl-drx-RetransmissionTimer may be started only after the last sl-drx-HARQ-RTT-Timer times out. If the previous sl-drx-HARQ-RTT-Timer times out, the first communication device does not monitor the PSCCH and/or PSSCH.

In the embodiments of the present application, it is clear under which scenarios the first communication device does not monitor the PSCCH and/or PSSCH, so that the energy consumption of the first communication device can be reduced.

The first communication device determining to listen to the PSCCH and/or PSSCH based on a fourth event;

The fourth event includes that the first timer is started for the R time to timeout, the first timer is started for the R time not last time, and R is a positive integer smaller than N.

Optionally, the sl-drx-HARQ-RTT-Timer is started at the time corresponding to the first or the L PSFCH th, and the sl-drx-HARQ-RTT-Timer is restarted at the time corresponding to each PSFCH. The sl-drx-RetransmissionTimer may be started only after the last sl-drx-HARQ-RTT-Timer times out. If the previous sl-drx-HARQ-RTT-Timer times out, the first communication device listens to the PSCCH and/or the PSSCH.

Optionally, the sl-drx-HARQ-RTT-Timer is started at the time corresponding to the first or the L PSFCH th, and the sl-drx-HARQ-RTT-Timer is restarted at the time corresponding to at least one PSFCH next. The sl-drx-RetransmissionTimer may be started only after the last sl-drx-HARQ-RTT-Timer times out. If the previous sl-drx-HARQ-RTT-Timer times out, the first communication device listens to the PSCCH and/or the PSSCH.

In the embodiments of the present application, it is clear under which scenes the first communication device listens to the PSCCH and/or the PSSCH, so that packet loss can be avoided, and communication quality can be improved.

Optionally, the method further comprises:

the first communication device determining to listen to the PSCCH and/or PSSCH based on a fifth event;

the fifth event includes the first timer and the second timer running simultaneously.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and at the time corresponding to each PSFCH, the sl-drx-HARQ-RTT-Timer is restarted, and after any one of the sl-drx-HARQ-RTT-Timer times out, the sl-drx-RetransmissionTimer is started; if the first communication device is running sl-drx-HARQ-Timer and sl-drx-RetransmissionTimer at the same time, the first communication device does not listen to the PSCCH and/or PSSCH.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and at the time corresponding to each PSFCH, the sl-drx-HARQ-RTT-Timer is restarted, and after each sl-drx-HARQ-RTT-Timer times out, the sl-drx-RetransmissionTimer is started; if the first communication device is running sl-drx-HARQ-Timer and sl-drx-RetransmissionTimer at the same time, the first communication device does not listen to the PSCCH and/or PSSCH.

Optionally, the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH, and at the time corresponding to each PSFCH, the sl-drx-HARQ-RTT-Timer is restarted, and after any multiple sl-drx-HARQ-RTT-Timer times out, the sl-drx-RetransmissionTimer is started; if the first communication device is running sl-drx-HARQ-Timer and sl-drx-RetransmissionTimer at the same time, the first communication device does not listen to the PSCCH and/or PSSCH.

Optionally, the method further comprises:

The first communication device determining not to listen to the PSCCH and/or PSSCH based on a sixth event;

The sixth event includes the first timer and the second timer running simultaneously.

Optionally, fig. 8 is a schematic diagram of a timer running method according to an embodiment of the present application, as shown in fig. 8, the initial transmission may be a first or an L PSFCH th resource or a transmission location of a first or an L PSFCH th resource, and the feedback resource may be a PSFCH resource; the sl-drx-HARQ-RTT-Timer may be started at the time corresponding to the first or the L PSFCH (rtstart), and at the time corresponding to each PSFCH, the sl-drx-HARQ-RTT-Timer is restarted (rtstart), and after any of the sl-drx-HARQ-RTT-Timer times out, the sl-drx-RetransmissionTimer is started (corresponding to retxTimer in fig. 8); if the first communication device is running both sl-drx-HARQ-Timer and sl-drx-RetransmissionTimer (corresponding to retxTimer in fig. 8), the first communication device is not listening to PSCCH and/or PSSCH.

In the embodiment of the application, the first electronic device can clearly know under what condition the sl-drx-HARQ-RTT-Timer and the sl-drx-RetransmissionTimer should be started, and can clearly know when the PSCCH and/or the PSSCH should be monitored, and when the PSCCH and/or the PSSCH should not be monitored, so that correct data or signaling transceiving can be realized.

Optionally, the time of starting the first timer includes any one of the following:

a first time unit after the PSFCH resources;

The first time unit after PSFCH transmissions.

Alternatively, a time unit may refer to a time slot, or a symbol, or a sub-time slot, or any fixed length of time, which is not limited by embodiments of the present application.

Optionally, the time of starting the first timer may be a time corresponding to PSFCH;

Optionally, the time corresponding to PSFCH may be the first time unit after PSFCH's resource;

Optionally, the time corresponding to PSFCH may be the first time unit after PSFCH transmission;

Alternatively, PSFCH transmission may refer to the first communication device performing a "send PSFCH" action, such as attempting to send a PSFCH, which may or may not be successful.

Alternatively, PSFCH transmissions may refer to the first communication device successfully transmitting PSFCH.

Optionally, the time corresponding to the first or the L PSFCH th in each embodiment of the present application may include: after the first or the L PSFCH resource, or after the first or the L PSFCH transmission carrying the HARQ feedback.

Optionally, in the case of the PSFCH transmission, the time of starting the first timer includes: the first time unit after PSFCH transmission;

And/or

In the case that PSFCH is not transmitted, the starting the first timer includes: the first time unit after the PSFCH resources.

Optionally, in the case that PSFCH is not transmitted, the time corresponding to PSFCH may be the first time unit after the resource of PSFCH;

Optionally, in the case of PSFCH transmission, the time corresponding to PSFCH may be the first time unit after PSFCH transmission;

Optionally, for any one PSFCH, if the PSFCH transmission is successful, the first timer is started in the first time unit after the PSFCH transmission is successful.

Optionally, for any one PSFCH, if the PSFCH does not send successfully or does not send, then a first timer is started at a first time unit after the PSFCH resource.

In one embodiment, the sl-drx-HARQ-RTT-Timer may be started at a first time unit (such as symbol or slot) after a first or an L-th PSFCH th transmission carrying HARQ feedback;

In one embodiment, if the HARQ feedback cannot be sent, the sl-drx-HARQ-RTT-Timer is started at a first time unit (e.g., symbol or slot) after PSFCH resources corresponding to the HARQ feedback.

Optionally, when the HARQ feedback can be transmitted, the starting time of the sl-drx-HARQ-RTT-Timer may be "after PSFCH transmissions carrying the HARQ feedback at the first or the L-th" and when the HARQ feedback is not transmitted or the HARQ feedback transmission fails, the starting time of the sl-drx-HARQ-RTT-Timer may be "after the first or the N-th PSFCH resources".

Alternatively, PSFCH may be determined to be not transmitted based on UL/SL priority (UL/SL prioritization).

Alternatively, PSFCH may be determined PSFCH as not transmitting based on the LBT failure.

Optionally, in the case of transmitting the HARQ ACK through the PSFCH, the time of starting the first timer includes: the first time unit after PSFCH transmission;

And/or

In the case of transmitting HARQ NACK through the PSFCH, the time of starting the first timer includes: the first time unit after PSFCH transmissions.

Alternatively, it may be determined that the first timer needs to be started only if PSFCH transmits a HARQ ACK; the first timer may be started at a first time unit after PSFCH of the transmission of the HARQ ACK.

Alternatively, it may be determined that the first timer needs to be started only if PSFCH transmits a HARQ NACK; the first timer may be started at a first time unit after PSFCH of the transmission of the HARQ ACK.

Alternatively, it may be determined that the first timer needs to be started in both PSFCH cases of transmitting HARQ ACK or transmitting HARQ NACK; the first timer may be started at a first time unit after PSFCH of the transmission of the HARQ ACK and started at a first time unit after PSFCH of the transmission of the HARQ NACK.

In one embodiment, the feedback determination mode determined by the first communication device is a negative feedback only acknowledgement mode (negative-only acknowledgement), and the sl-drx-HARQ-RTT-Timer may be started at a first time unit (such as symbol or slot) after the first or the L-th PSFCH transmission carrying the HARQ negative feedback;

In one embodiment, the feedback determination mode determined by the first communication device is a negative feedback only acknowledgement mode (negative-only acknowledgement), and if the feedback to be transmitted is positive feedback (positive acknowledgement), the sl-drx-HARQ-RTT-Timer is started at the first time unit (such as symbol or slot) after the PSFCH resource.

In one embodiment, after the first or L PSFCH transmission, or after the first or L PSFCH resource, the sl-drx-HARQ-RTT-Timer is started, if the ACK is successfully sent subsequently, the sl-drx-HARQ-RTT-Timer is stopped, if the NACK is always sent, the sl-drx-HARQ-RTT-Timer is stopped until after the last PSFCH resource available, and the sl-drx-RetransmissionTimer is started.

Alternatively, the first PSFCH may be the first or the L PSFCH.

Optionally, in the case that the first PSFCH is not transmitting, the time corresponding to the first PSFCH may be the first time unit after the resource of the first PSFCH;

Optionally, in the case of the first PSFCH transmission, the time corresponding to the first PSFCH may be the first time unit after the first PSFCH transmission;

optionally, for any one of the first PSFCH, if the first PSFCH is successful, a first timer is started in a first time unit after the first PSFCH is successful.

Optionally, for any one of the first PSFCH, if the first PSFCH does not send successfully or does not send, a first timer is started a first time unit after the resources of the first PSFCH.

In one embodiment, the sl-drx-HARQ-RTT-Timer may be started at a first time unit (such as symbol or slot) after any first PSFCH transmission carrying HARQ feedback;

In one embodiment, if the HARQ feedback cannot be sent, the sl-drx-HARQ-RTT-Timer is started at a first time unit (e.g., symbol or slot) after a first PSFCH resource corresponding to the HARQ feedback.

Alternatively, the first PSFCH transmission may refer to the first communication device performing an action of "send PSFCH", such as attempting to send first PSFCH, first PSFCH may or may not be successful.

Alternatively, the first PSFCH transmission may refer to the first communication device successfully sending the first PSFCH.

Optionally, the time of restarting the first timer includes any one of the following:

a first time unit after the second PSFCH resource;

The first time unit after the second PSFCH is transmitted.

Optionally, the time corresponding to the second PSFCH may be the first time unit after the resource of the second PSFCH;

optionally, the time corresponding to the second PSFCH may be the first time unit after the transmission of the second PSFCH;

Optionally, the time of restarting the first timer may be the time corresponding to the second PSFCH;

alternatively, the second PSFCH transmission may refer to the first communication device performing an action of "send PSFCH", such as attempting to send second PSFCH, and second PSFCH may or may not be successful.

Alternatively, the second PSFCH transmission may refer to the first communication device successfully sending the second PSFCH.

Optionally, in the case of transmitting the HARQ ACK through the second PSFCH, the time of restarting the first timer includes: a first time unit after the second PSFCH transmission;

And/or

In the case of transmitting HARQ NACK through the second PSFCH, the time of restarting the first timer includes: the first time unit after the second PSFCH transmission.

Optionally, in the case that the second PSFCH is not transmitting, the time corresponding to the second PSFCH may be the first time unit after the resource of the second PSFCH;

Optionally, in the case of the second PSFCH transmission, the time corresponding to the second PSFCH may be the first time unit after the second PSFCH transmission;

optionally, for any one of the second PSFCH, if the second PSFCH is successful, the first timer is started in the first time unit after the second PSFCH is successful.

Optionally, for any one of the second PSFCH, if the second PSFCH does not send successfully or does not send, the first timer is started a first time unit after the resources of the second PSFCH.

In one embodiment, the sl-drx-HARQ-RTT-Timer may be started at a first time unit (such as symbol or slot) after any second PSFCH transmission carrying HARQ feedback;

In one embodiment, if the HARQ feedback cannot be sent, the sl-drx-HARQ-RTT-Timer is started at a first time unit (e.g., symbol or slot) after a second PSFCH resource corresponding to the HARQ feedback.

Optionally, at a time corresponding to PSFCH, the first communications device starts a first timer, including:

Under the condition that the first communication equipment determines that the first condition is met, starting a first timer at a moment corresponding to PSFCH;

wherein the first condition includes at least one of:

HARQ feedback enabled;

HARQ feedback de-enabling;

cast type is unicast;

cast type is multicast and the HARQ feedback mode includes a positive feedback acknowledgement mode and a negative feedback acknowledgement mode;

cast type is multicast and HARQ feedback mode includes negative feedback acknowledgement mode;

one or more retransmission opportunities are not scheduled in the SCI.

Alternatively, the embodiments of the present application may be performed when the following conditions are simultaneously satisfied, for example, the first timer is started at a time corresponding to PSFCH, and the second timer is started after the first timer expires:

HARQ feedback enable (HARQ feedback is enabled);

cast type is unicast.

HARQ feedback enable (HARQ feedback is enabled);

cast type is multicast and HARQ feedback mode includes positive feedback acknowledgement mode and negative feedback acknowledgement mode.

HARQ feedback enable (HARQ feedback is enabled);

cast type is multicast and HARQ feedback mode includes negative feedback acknowledgement mode.

HARQ feedback de-enablement (HARQ feedback is disabled);

the SCI does not schedule one or more retransmission opportunities.

Optionally, after the first communication device starts a first timer, before the first timer expires, the method further comprises:

in the presence of PSFCH resources, a retransmission is attempted PSFCH.

Optionally, the sl-drx-HARQ-RTT-Timer may be started after the first PSFCH or the L-th transmission or resource, and retransmission PSFCH may be attempted if PSFCH resources are available before timeout, until the sl-drx-HARQ-RTT-Timer times out, retransmission PSFCH may be stopped, and sl-drx-RetransmissionTimer may be started.

Optionally, after the first communication device starts the first timer, the method further includes:

after sending the hybrid automatic repeat request acknowledgement, ACK, at least one of the following is performed:

stopping running the first timer, or

And starting the second timer. In one embodiment, after the first or L PSFCH transmission, or after the first or L PSFCH resource, the sl-drx-HARQ-RTT-Timer is started, if the ACK is successfully sent subsequently, the sl-drx-HARQ-RTT-Timer is stopped, if the NACK is always sent, the sl-drx-HARQ-RTT-Timer is stopped until after the last PSFCH resource available, and the sl-drx-RetransmissionTimer is started.

In one embodiment, the timer running method may include:

Step 1: the first electronic device monitors PSCCH and/or PSSCH in DRX ACTIVE TIME;

Step 2: the first electronic equipment receives SCI, wherein SCI indicates a sidelink transmission;

step 3: in the case PSFCH resources are configured, if it is determined that the following conditions are simultaneously satisfied:

HARQ feedback is enabled, and SCI indicates that the transmission is unicast;

or determining that the following conditions are simultaneously satisfied:

HARQ feedback is enabled, and SCI indicates that the transmission is multicast, and positive-negative feedback acknowledgement mode (active-negative acknowledgement) is selected;

The sl-drx-HARQ-RTT-Timer may be started at the first symbol or slot after the first PSFCH transmissions carrying HARQ feedback. If the HARQ feedback cannot be sent, the sl-drx-HARQ-RTT-Timer is started at the first symbol or slot after the first PSFCH resources.

Step 4: the sl-drx-HARQ-RTT-Timer is restarted at each PSFCH resource next. Any one sl-drx-HARQ-RTT-Timer times out and starts sl-drx-RetransmissionTimer. If the first electronic device is running sl-drx-HARQ-Timer and sl-drx-RetransmissionTimer at the same time, the first electronic device is behaving to listen to the PSCCH and/or PSSCH.

In one embodiment, the timer running method may include:

step 3: in the case PSFCH resources are configured, if the following conditions are satisfied at the same time:

HARQ feedback is enabled, and SCI indicates that the transmission is multicast, and that negative-only acknowledgement-only acknowledgement mode is selected;

The sl-drx-HARQ-RTT-Timer may be started at the first symbol or slot after the first PSFCH transmissions carrying HARQ feedback. If the HARQ feedback cannot be sent or the pending feedback is positive feedback (positive acknowledgement), then the sl-drx-HARQ-RTT-Timer is started at the first symbol or slot after the first PSFCH resource.

In one embodiment, the timer running method may include:

HARQ feedback is disabled, and the SCI does not schedule one or more retransmission opportunities;

The sl-drx-HARQ-RTT-Timer is started at the first symbol or slot after the first PSFCH resources.

According to the timer running method provided by the embodiment of the application, the execution main body can be a timer running device. In the embodiment of the application, a timer running method executed by a timer running device is taken as an example, and the timer running device provided by the embodiment of the application is described.

Fig. 9 is a schematic structural diagram of a timer running device according to an embodiment of the present application, and as shown in fig. 9, the timer running device 900 includes:

the first starting module 910 is configured to start a first timer at a time corresponding to the physical sidelink feedback channel PSFCH;

the second starting module 920 is configured to start a second timer after the first timer expires;

Optionally, the first communication device is configured with at least N PSFCH resources, and a first starting module is configured to:

Optionally, the first starting module is further configured to at least one of:

At a time corresponding to at least one second PSFCH, the first communication device restarts the first timer; wherein, in the time domain, the transmission resource of the second PSFCH is located after the transmission resource of the first PSFCH; in the case where the running time of the second timer coincides at least partially in time domain with the transmission resource of the third PSFCH, the first communication device prohibits restarting the first timer at a time corresponding to the third PSFCH;

Optionally, the second starting module is used for at least one of the following:

Optionally, the apparatus further comprises:

the third starting module is used for starting a second timer by the first communication equipment after the first timer started for the X time is overtime;

a fourth starting module, configured to, after the first timer started for the Y-th time expires, not start the second timer by the first communication device, and not monitor the PSCCH and/or the PSSCH;

Optionally, the apparatus further comprises:

a fifth starting module, configured to start the SL retransmission timer after the first timer is started for the Z-th time is overtime;

The first monitoring module is used for monitoring the PSCCH and/or the PSSCH without starting the SL retransmission timer after the first timer started for the W time is overtime;

Optionally, the apparatus further comprises:

a first determining module, configured to determine, based on a third event, not to monitor the PSCCH and/or the PSSCH when the first communication device starts the second timer after the last start of the first timer expires;

Optionally, the apparatus further comprises:

A second determining module, configured to determine to monitor the PSCCH and/or the PSSCH based on a fourth event when the first communication device starts a second timer after the last start of the first timer expires;

Optionally, the apparatus further comprises:

a third determining module, configured to determine to monitor the PSCCH and/or the PSSCH based on a fifth event;

Optionally, the apparatus further comprises:

A fourth determining module, configured to determine not to monitor the PSCCH and/or the PSSCH based on a sixth event;

a first time unit after the PSFCH resources;

The first time unit after PSFCH transmissions.

And/or

a first time unit after the second PSFCH resource;

The first time unit after the second PSFCH is transmitted.

And/or

Optionally, the first starting module is configured to:

Under the condition that the first condition is met is determined, starting a first timer at a moment corresponding to PSFCH;

wherein the first condition includes at least one of:

HARQ feedback enabled;

HARQ feedback de-enabling;

cast type is unicast;

cast type is multicast;

The HARQ feedback mode includes a positive feedback acknowledgement mode;

The HARQ feedback mode includes a negative feedback acknowledgement mode;

one or more retransmission opportunities are not scheduled in the SCI.

Optionally, the apparatus further comprises:

A retransmission module, configured to attempt to retransmit PSFCH when a resource of PSFCH is present after the first communication device starts a first timer and before the first timer expires.

Optionally, the apparatus further comprises:

a sixth starting module, configured to perform at least one of the following after sending the hybrid automatic retransmission acknowledgement ACK after starting the first timer:

stopping running the first timer, or

And starting the second timer. In the embodiment of the application, the starting time of the DRX related Timer in SL DRX is determined by determining that the SL-DRX-HARQ-RTT-Timer is started at the time corresponding to PSFCH and determining that the SL-DRX-RetransmissionTimer is started after the SL-DRX-HARQ-RTT-Timer is overtime, so that the reliability of data transceiving or signaling transceiving of the terminal is improved.

The timer running device in the embodiment of the application can be an electronic device, for example, an electronic device with an operating system, or can be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, the terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not limited in detail.

The timer running device provided by the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 4 to fig. 8, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Optionally, fig. 10 is a schematic structural diagram of a communication device provided in the embodiment of the present application, and as shown in fig. 10, the embodiment of the present application further provides a communication device 1000, including a processor 1001 and a memory 1002, where the memory 1002 stores a program or an instruction that can be executed on the processor 1001, for example, when the communication device 1000 is a first communication device, the program or the instruction is executed by the processor 1001 to implement the steps of the above-mentioned timer running method embodiment, and the same technical effects can be achieved. When the communication device 1000 is a network side device, the program or the instruction, when executed by the processor 1001, implements the steps of the above-described embodiment of the timer running method, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides first communication equipment, which comprises a processor and a communication interface, wherein the processor is used for:

The first communication device embodiment corresponds to the first communication device side method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the first communication device embodiment, and the same technical effects can be achieved. Specifically, fig. 11 is a schematic hardware structure of a first communication device implementing an embodiment of the present application.

The first communication device 1100 includes, but is not limited to: at least part of the components of the radio frequency unit 1101, the network module 1102, the audio output unit 1103, the input unit 1104, the sensor 1105, the display unit 1106, the user input unit 1107, the interface unit 1108, the memory 1109, and the processor 1110, etc.

Those skilled in the art will appreciate that the first communication device 1100 may further include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 1110 by a power management system, such as to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 11 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 1104 may include a graphics processing unit (Graphics Processing Unit, GPU) 11041 and a microphone 11042, the graphics processor 11041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072. The touch panel 11071 is also referred to as a touch screen. The touch panel 11071 may include two parts, a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 1101 may transmit the downlink data to the processor 1110 for processing; in addition, the radio frequency unit 1101 may send uplink data to the network side device. Typically, the radio frequency unit 1101 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1109 may be used to store software programs or instructions and various data. The memory 1109 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1109 may include volatile memory or nonvolatile memory, or the memory 1109 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate Synchronous dynamic random access memory (Double DATA RATE SDRAM, DDRSDRAM), enhanced Synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCH LINK DRAM, SLDRAM), and Direct random access memory (DRRAM). Memory 1109 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 1110 may include one or more processing units; optionally, the processor 1110 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1110.

Wherein the processor 1110 is configured to:

Starting a first timer at a time corresponding to a physical sidelink feedback channel PSFCH;

after the first timer times out, starting a second timer;

Optionally, the first communication device is configured with at least N PSFCH resources, and the processor 1110 is configured to:

Optionally, the processor 1110 is configured to at least one of:

after the first timer is started for the last time and overtime, a second timer is started;

after the first timer is started at any time and overtime, the second timer is started;

After the first timer is started for any plurality of times and overtime, a second timer is started;

After each time the first timer is started and the time out, the second timer is started.

Optionally, the processor 1110 is configured to:

starting a second timer after the first timer is started for the X time and overtime;

After the first timer is started for the Y time and overtime, the second timer is not started, and PSCCH and/or PSSCH is not monitored;

Optionally, the processor 1110 is configured to:

starting an SL retransmission timer after the first timer started for the Z time is overtime;

after the first timer started for the W time is overtime, the SL retransmission timer is not started, and PSCCH and/or PSSCH are monitored;

Optionally, the processor 1110 is configured to:

Determining not to listen to the PSCCH and/or PSSCH based on the third event;

Optionally, the processor 1110 is configured to:

Determining to monitor the PSCCH and/or PSSCH based on the fourth event;

Optionally, the processor 1110 is configured to:

Determining to monitor the PSCCH and/or PSSCH based on the fifth event;

Optionally, the processor 1110 is configured to:

determining not to listen to the PSCCH and/or PSSCH based on the sixth event;

a first time unit after the PSFCH resources;

The first time unit after PSFCH transmissions.

And/or

a first time unit after the second PSFCH resource;

The first time unit after the second PSFCH is transmitted.

And/or

Optionally, the processor 1110 is configured to:

wherein the first condition includes at least one of:

HARQ feedback enabled;

HARQ feedback de-enabling;

cast type is unicast;

cast type is multicast;

The HARQ feedback mode includes a positive feedback acknowledgement mode;

The HARQ feedback mode includes a negative feedback acknowledgement mode;

one or more retransmission opportunities are not scheduled in the SCI.

Optionally, after the first communication device starts a first timer, before the first timer expires, the processor 1110 is configured to:

in the presence of PSFCH resources, a retransmission is attempted PSFCH.

Optionally, the processor 1110 is configured to: after the first communication device starts the first timer, after sending the hybrid automatic repeat request acknowledgement ACK, at least one of the following is executed:

stopping running the first timer, or

The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above-mentioned timer running method embodiment, and can achieve the same technical effect, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium may be non-volatile or non-transitory. The readable storage medium may include a computer readable storage medium such as a computer read only memory ROM, a random access memory RAM, a magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running programs or instructions, the processes of the timer running method embodiment can be realized, the same technical effect can be achieved, and the repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiment of the present application further provides a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the above-mentioned timer running method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated here.

The embodiment of the application also provides a timer running system, which comprises: a first communication device operable to perform the steps of the timer running method as described above.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method of operating a timer, comprising:

2. The timer running method according to claim 1, wherein the first communication device is configured with at least N PSFCH resources, and the first communication device starts the first timer at a time corresponding to PSFCH, comprising:

3. The timer running method according to claim 2, wherein the first communication device starts the first timer at a time corresponding to PSFCH, further comprising at least one of:

4. A method of timer operation according to any of claims 1-3, wherein after the first timer expires, the first communication device starts a second timer comprising at least one of:

5. The timer running method according to any one of claims 1 to 4, characterized in that the method further comprises:

6. The timer running method according to any one of claims 1 to 4, characterized in that the method further comprises:

7. The timer running method according to claim 4, wherein in the case where the first communication device starts the second timer after the last time the first timer started has expired, the method further comprises:

8. The timer running method according to claim 4, wherein in the case where the first communication device starts the second timer after the last time the first timer started has expired, the method further comprises:

9. The timer running method according to claim 4, characterized in that the method further comprises:

10. The timer running method according to claim 4, characterized in that the method further comprises:

11. The timer running method according to any one of claims 1 to 10, wherein the time of starting the first timer includes any one of:

a first time unit after the PSFCH resources;

The first time unit after PSFCH transmissions.

12. The timer running method according to any one of claims 1 to 11, wherein in the case of the PSFCH transmission, the time of starting the first timer includes: the first time unit after PSFCH transmission;

And/or

13. The timer running method according to any one of claims 1 to 12, wherein in the case of transmitting HARQ ACK through the PSFCH, the time of starting the first timer includes: the first time unit after PSFCH transmission;

And/or

14. A timer running method according to claim 3, wherein the time of restarting the first timer comprises any one of:

a first time unit after the second PSFCH resource;

The first time unit after the second PSFCH is transmitted.

15. The timer running method according to claim 3 or 14, wherein in the case of transmitting HARQ ACK through the second PSFCH, the time of restarting the first timer includes: a first time unit after the second PSFCH transmission;

And/or

16. The method of any one of claims 1-15, wherein the first communication device starts the first timer at a time corresponding to PSFCH, comprising:

wherein the first condition includes at least one of:

HARQ feedback enabled;

HARQ feedback de-enabling;

cast type is unicast;

cast type is multicast;

The HARQ feedback mode includes a positive feedback acknowledgement mode;

The HARQ feedback mode includes a negative feedback acknowledgement mode;

one or more retransmission opportunities are not scheduled in the SCI.

17. The timer running method according to any one of claims 1 to 16, wherein after the first communication device starts a first timer, before the first timer expires, the method further comprises:

in the presence of PSFCH resources, a retransmission is attempted PSFCH.

18. The timer running method according to any one of claims 1 to 16, wherein after the first communication device starts the first timer, the method further comprises:

stopping running the first timer, or

And starting the second timer.

19. A timer running apparatus, comprising:

20. The timer running apparatus of claim 19, wherein the first communication device is configured with at least N PSFCH resources, a first start module configured to:

21. The timer running apparatus of claim 20 wherein the first start-up module is further configured to at least one of:

22. The timer running apparatus according to any one of claims 19 to 21, wherein the second starting module is configured to at least one of:

23. A timer running apparatus according to any one of claims 19 to 22, wherein the apparatus further comprises:

24. A timer running apparatus according to any one of claims 19 to 22, wherein the apparatus further comprises:

25. The timer running apparatus of claim 22, wherein the apparatus further comprises:

26. The timer running apparatus of claim 22, wherein the apparatus further comprises:

27. The timer running apparatus of claim 22, wherein the apparatus further comprises:

28. The timer running apparatus of claim 22, wherein the apparatus further comprises:

29. The timer running apparatus according to any one of claims 19 to 28, wherein the time of starting the first timer comprises any one of:

a first time unit after the PSFCH resources;

The first time unit after PSFCH transmissions.

30. The timer running apparatus according to any one of claims 19 to 28, wherein in the case of said PSFCH transmission, the time of starting the first timer comprises: the first time unit after PSFCH transmission;

And/or

31. The timer running apparatus according to any one of claims 19 to 30, wherein in the case of transmitting a HARQ ACK through the PSFCH, the time of starting the first timer comprises: the first time unit after PSFCH transmission;

And/or

32. The timer running apparatus according to claim 21, wherein the time of restarting the first timer includes any one of:

a first time unit after the second PSFCH resource;

The first time unit after the second PSFCH is transmitted.

33. The timer running apparatus according to claim 21 or 32, wherein in the case of transmitting HARQ ACK through the second PSFCH, the time of restarting the first timer comprises: a first time unit after the second PSFCH transmission;

And/or

34. The timer running apparatus according to any one of claims 19 to 33, wherein the first starting module is configured to:

wherein the first condition includes at least one of:

HARQ feedback enabled;

HARQ feedback de-enabling;

cast type is unicast;

cast type is multicast;

The HARQ feedback mode includes a positive feedback acknowledgement mode;

The HARQ feedback mode includes a negative feedback acknowledgement mode;

one or more retransmission opportunities are not scheduled in the SCI.

35. A timer running apparatus according to any one of claims 19 to 34, wherein the apparatus further comprises:

36. A timer running apparatus according to any one of claims 19 to 35, wherein the apparatus further comprises:

stopping running the first timer, or

And starting the second timer.

37. A first communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implements the timer running method of any one of claims 1 to 18.

38. A readable storage medium, characterized in that a program or an instruction is stored on the readable storage medium, which when executed by a processor implements the timer running method according to any one of claims 1 to 18.