CN117336856A

CN117336856A - Transmission resource determining method, device, terminal and storage medium

Info

Publication number: CN117336856A
Application number: CN202210715976.1A
Authority: CN
Inventors: 王欢; 纪子超
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2024-01-02

Abstract

The application discloses a transmission resource determining method, a device, a terminal and a storage medium, which belong to the technical field of communication, and the transmission resource determining method in the embodiment of the application comprises the following steps: the terminal selects an alternative resource from the alternative resource set as a resource to be transmitted, wherein the resource to be transmitted is selected according to at least one rule as follows: selecting an alternative resource with the front time, selecting an alternative resource which is continuous in time, and selecting an alternative resource with the time interval meeting the preset time interval limit; and the terminal executes LBT before the resource to be transmitted.

Description

Transmission resource determining method, device, terminal and storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a transmission resource determining method, a device, a terminal and a storage medium.

Background

Unlicensed spectrum (unlicensed spectrum) transmission is supported in some communication systems, further supporting Sidelink (SL) transmission over unlicensed spectrum resources. For SL transmissions of unlicensed spectrum, listen before talk (Listen Before Talk, LBT) is often performed on the resources to be transmitted before transmission to acquire the resources. At present, the terminal randomly selects resources to be transmitted from the alternative resource set, and the randomly selected resources to be transmitted have randomness, so that the SL transmission of the terminal can be influenced, and the SL transmission performance of the terminal is poor.

Disclosure of Invention

The embodiment of the application provides a transmission resource determining method, a device, a terminal and a storage medium, which can solve the problem that SL transmission of the terminal is affected due to randomness of randomly selected resources to be transmitted, so that SL transmission performance of the terminal is relatively poor.

In a first aspect, a transmission resource determining method is provided, which is characterized by comprising:

the terminal selects an alternative resource from the alternative resource set as a resource to be transmitted, wherein the resource to be transmitted is selected according to at least one rule as follows: selecting an alternative resource with the front time, selecting an alternative resource which is continuous in time, and selecting an alternative resource with the time interval meeting the preset time interval limit;

and the terminal executes LBT before the resource to be transmitted.

In a second aspect, there is provided a transmission resource determining apparatus, including:

the selection module is used for selecting the alternative resources from the alternative resource set as resources to be transmitted, wherein the resources to be transmitted are selected according to at least one rule as follows: selecting an alternative resource with the front time, selecting an alternative resource which is continuous in time, and selecting an alternative resource with the time interval meeting the preset time interval limit;

And the first execution module is used for executing LBT before the resource to be transmitted.

In a third aspect, a terminal is provided, which includes a processor and a memory, where the memory stores a program or instructions executable on the processor, and the program or instructions implement steps of a transmission resource determining method provided in an embodiment of the present application when executed by the processor.

In a fourth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to select an alternative resource from a set of alternative resources as a resource to be transmitted, where the resource to be transmitted is selected according to at least one rule as follows: selecting an alternative resource with the front time, selecting an alternative resource which is continuous in time, and selecting an alternative resource with the time interval meeting the preset time interval limit; the communication interface is used for executing LBT before the resource to be transmitted.

In a fifth aspect, there is provided a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the method for determining an input resource provided by the embodiments of the present application.

In a sixth aspect, a chip is provided, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement a resource determining method provided by an embodiment of the present application.

In a seventh 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 steps of the method for determining an input resource provided by embodiments of the present application.

In the embodiment of the application, the terminal selects an alternative resource from the alternative resource set as a resource to be transmitted, where the resource to be transmitted is selected according to at least one rule as follows: selecting an alternative resource with the front time, selecting an alternative resource which is continuous in time, and selecting an alternative resource with the time interval meeting the preset time interval limit; and the terminal executes LBT before the resource to be transmitted. Compared with the randomly selected resource to be transmitted, the embodiment of the application can improve the SL transmission performance of the terminal.

Drawings

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

fig. 2 is a flowchart of a method for determining an input resource according to an embodiment of the present application;

fig. 3 is a schematic diagram of a method for determining an input resource according to an embodiment of the present application;

FIG. 4 is a schematic diagram of another method for determining transmission resources according to an embodiment of the present application;

FIG. 5 is a schematic diagram of another method for determining transmission resources according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another method for determining transmission resources according to an embodiment of the present application;

fig. 7 is a block diagram of a resource transmission determining device according to an embodiment of the present application;

fig. 8 is a block diagram of a communication device according to an embodiment of the present application;

fig. 9 is a block diagram of a terminal according to an embodiment of the present application.

Detailed Description

Technical solutions in 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 obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects 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 terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may 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 is noted that the techniques described in 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 present 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 air interface (NR) system for purposes of example and NR terminology is used in much of the description below, but these techniques may also be applied to applications other than NR system applications, such as the 6th generation (6th Generation,6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or 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 (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a Road Side Unit (RSU), a smart home (home Device with wireless communication function, such as a refrigerator, a television, a washing machine, or furniture), a game machine, a personal Computer (personal Computer, a PC), a teller machine, or a self-service machine, and the like, and the Wearable Device includes: intelligent watches, intelligent bracelets, intelligent headphones, intelligent glasses, intelligent jewelry (intelligent bracelets, intelligent rings, intelligent necklaces, intelligent bracelets, intelligent footchains, intelligent helmets, intelligent levers, etc.), intelligent bracelets, intelligent clothing, etc. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application.

In this embodiment, a sidelink (or sidelink, etc. abbreviated as SL) transmission may be performed between the terminals 11, that is, data transmission is performed directly on the physical layer between the terminals 11. The SL transmissions between terminals 11 may be broadcast, unicast, multicast, etc. And the terminals of the SL transmission can be all on-line or off-line, or part of the equipment is on-line and part of the equipment is off-line.

The network side device 12 may include a radio access network device, which may also be referred to as a radio access network (Radio Access Network, RAN), a radio access network function, or a radio access network element, and a core network device. The radio access network device may include a base station, a WLAN access point, a WiFi node, or the like, and the base station 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/reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that the base station in the NR system is merely described by way of example in the embodiment of the present application, 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 units (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 repository (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 (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), network data analysis functions (Network Data Analytics Function, NWDAF), location management functions (Location Management Function, LMF), and the like. 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.

In some embodiments, SL transmissions may include two resource allocation modes (modes), one is mode1, scheduling resources for network side devices; the other is mode2, the terminal itself decides what resources to use for transmission. Wherein the resource information may be a broadcast message from a network side device or preconfigured information. The terminal may employ resources of mode1 and/or mode2 if it is operating within the network-side device and has a radio resource control (Radio Resource Control, RRC) connection with the network-side device, and may operate in mode2 if it is operating within the network-side device but has no RRC connection with the network-side device. If the terminal is out of range of the network side device, then it can work in mode2 and make SL transmission according to preconfigured information.

For mode2, the working modes can be as follows:

1) After the resource selection is triggered, the terminal first determines a resource selection window, wherein the lower boundary of the resource selection window is at T1 time after the triggering of the resource selection, and the upper boundary of the resource selection is at T2 time after the triggering, wherein T2 is a value selected by the terminal implementation manner within a packet delay budget (packet delay budget, PDB) transmitted by a Transport Block (TB), and T2 is not earlier than T1.

2) Before the terminal selects the resources, determining a resource selection alternative resource set (candidate resource set), wherein the number of alternative resource sub-channels (sub-channels) is determined by a media access control (Medium Access Control, MAC) layer, and comparing the estimated reference signal received power (Reference Signal Received Power, RSRP) measured value according to the resources in the resource selection window with a corresponding RSRP threshold (RSRP threshold), such as estimating the RSRP measured value by monitoring a physical sidelink control channel (Physical SideLink Control Channel, PSCCH)/physical sidelink shared channel (Physical SideLink Shared Channel, PSSCH); if the RSRP is higher than the RSRP threshold, the resource is subjected to resource exclusion, the alternative resource set cannot be included, and the resources remained in the resource selection window after the resource exclusion are used as alternative resources in the alternative resource set.

It should be noted that, in the embodiments of the present application, the determination of the candidate resource set is not limited, and examples include: in addition to the above manner, other manners of protocol definition or alternative resource selection manners newly defined by a subsequent protocol may be adopted.

In some embodiments, the Type (Type) of LBT may be classified into Type1, type2A, type B, and Type2C. Type1 LBT is a channel interception mechanism based on back-off, and when a node detects that a channel is busy, the node performs back-off, and continues interception until the channel is empty. Type2C is that the node does not make LBT, i.e., no LBT or immediately sends (immediate transmission). Type2A and Type2B LBT are one-shot LBT only, i.e. the node makes one LBT before transmitting, and the channel is empty and the channel is busy and the channel is not transmitted. Type2A may be LBT within 25us, and is adapted to use the gap between two transmissions greater than or equal to 25us when the shared channel is occupied (Channel Occupancy Time, COT). While Type2B makes LBT within 16us, it is suitable for the gap between two transmissions to be equal to 16us when sharing COT. In addition, there is a Type 2LBT, which is suitable for licensed assisted Access (Licensed Assisted, access, LAA), enhanced licensed assisted Access ((Enhanced Licensed Assisted Access, eLAA), and further enhanced licensed assisted Access (Further Enhanced Licensed Assisted Access, feLAA), and when the COT is shared, the gap between two transmissions is greater than or equal to 25us, and the Type 2LBT may be used by network devices and terminals.

The following describes in detail, by means of some embodiments and application scenarios thereof, a transmission resource determining method, a device, a terminal, and a storage medium provided in the embodiments of the present application with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flowchart of a transmission resource determining method provided in an embodiment of the present application, as shown in fig. 2, including the following steps:

step 201, the terminal selects an alternative resource from the alternative resource set as a resource to be transmitted, where the resource to be transmitted is selected according to at least one rule as follows: the method comprises the steps of selecting an alternative resource with the front time, selecting an alternative resource which is continuous in time, and selecting an alternative resource with the time interval meeting the preset time interval limit.

The candidate resource set may be determined by the terminal based on the estimated RSRP measurement value, or may be preconfigured, for example, the network side is preconfigured for the terminal, which is not limited.

In some embodiments, the candidate resources in the candidate resource set include at least one of:

a single time unit resource;

a plurality of time unit resources;

wherein the plurality of time unit resources comprises a continuous plurality of time unit resources.

In this embodiment of the present application, the time unit may be a slot (slot), a sub-slot (sub-slot), or a micro-slot (mini-slot), or in some embodiments, one time unit may be a combination of multiple different types of time units, for example, one time unit includes a sub-slot and a slot, for example, a first transmission resource in a single slot resource (multi-slot resource) uses sub-slot for transmission, and then a subsequent transmission resource uses slot for transmission.

The single time unit resource may be understood as one time unit as an alternative resource, e.g. the alternative resource is a single time slot resource (single slot resource); the above-mentioned multiple time unit resources may be understood as multiple time units as one alternative resource, e.g. the alternative resource is a multislot resource (multislot resource). Wherein the plurality of time unit resources may include a plurality of individual time unit resources that are time-continuous, and frequency domain resources of each individual time unit resource within the plurality of time unit resources are the same or different. For example, the multi-slot resources are composed of time-continuous single-slot resources, and the frequency domain resources of the single-slot resources are the same, or the frequency domain resources of the single-slot resources may be different.

The rule of selecting the candidate resource with the front time can be that the candidate resource with the front time is preferentially selected from the candidate resources, for example, the front X in the priority selection time sequencing ₁ The alternative resources, or, the first X in the time sequencing is selected preferentially ₂ % of alternative resources, X ₁ And X ₂ Is a positive integer. Due to the selection of the alternative resource with the front time, LBT can be executed as early as possible, so as to execute SL transmission as early as possible, and improve the transmission probability of terminal data transmission.

The selection of the candidate resource that is continuous in time may be a selection of a plurality of candidate resources that are continuous in time in the candidate resource set, or a selection of at least one candidate resource that is continuous in time with the determined resource in the candidate resource set. Since the alternative resources which are continuous in time are selected, the efficiency of LBT can be improved, and the transmission efficiency of SL can also be improved.

The alternative resources whose selection time interval satisfies the preset time interval limit may be those with a priority of selecting the alternative resources with a concentration time interval greater than the preset time interval, where the preset time interval may be a time interval agreed by a protocol, such as an LBT duration, or a preset time greater than a time interval between SL transmission and feedback of a corresponding hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ), so that the terminal may complete LBT between different resources to be transmitted, so as to advance the time of SL transmission as much as possible, or so that there is a time of receiving HARQ feedback between SL transmissions, so that the next SL transmission may be transmitted based on HARQ feedback, and further improve the reliability of SL transmission.

It should be noted that, in the case where step 201 executes the resource to be transmitted according to the above-mentioned multiple rules, at least one of the following may be included, but not limited to:

The method comprises the steps of selecting a candidate resource with a time front preferentially, and selecting a candidate resource which is continuous in time from the candidate resources with the time front;

selecting the alternative resources with the time being front preferentially, and selecting the alternative resources with the time interval meeting the preset time interval limit from the alternative resources with the time being front;

the method comprises the steps of preferentially selecting alternative resources which are continuous in time, and selecting alternative resources which are ahead in time from the alternative resources which are continuous in time;

the alternative resources with the time interval meeting the preset time interval limit are preferentially selected, and the alternative resources with the time before selection are selected from the alternative resources meeting the preset time interval limit.

In addition, in step 201, one or more resources to be transmitted may be selected.

Step 202, the terminal executes LBT before the resource to be transmitted.

The terminal may perform LBT before the resources to be transmitted, which is performed before some or all of the resources to be transmitted selected in step 201. When LBT is successfully executed before one resource to be transmitted, the resource to be transmitted is a transmission resource, namely, the terminal can execute SL transmission on the resource; if the LBT is failed before one resource to be transmitted, the terminal may perform the LBT before the non-first resource in the resource to be transmitted, or perform the LBT before the next resource to be transmitted.

In this embodiment of the present application, through the foregoing steps, resources to be transmitted that are at least one of time-forward, continuous in time, and meeting a preset time interval limit may be selected. If the alternative resources with the front time are selected to execute the SL transmission as early as possible so as to improve the transmission probability of the terminal data transmission, if the alternative resources with continuous time are selected, the transmission efficiency of the SL can be improved, if the alternative resources with the time interval meeting the preset time interval limit are selected, the time interval between the resources to be transmitted can meet the preset time interval limit, and then the terminal can execute LBT or receive HARQ feedback and other operations between the resources to be transmitted so as to improve the transmission performance of the SL.

As an alternative implementation manner, the terminal selects or preferentially selects a first alternative resource as the resource to be transmitted, where the first alternative resource includes one of the following:

front X in the alternative resource concentration time sequencing ₁ Some or all of the individual alternative resources;

front X in the alternative resource concentration time sequencing ₂ % of some or all of the alternative resources;

The alternative resources are concentrated to part or all of the alternative resources in a target time unit, and the target time unit is the front X in a resource selection window ₃ A time unit, or the target time unit is the front X in the resource selection window ₄ % time units;

wherein X is ₁ 、X ₂ 、X ₃ And X ₄ Is a positive integer.

The above-mentioned first alternative resource is preferably selected as the resource to be transmitted, which may be understood as that if there are a plurality of eligible alternative resources, the above-mentioned first alternative resource is preferably or as much as possible selected among the eligible alternative resources, e.g. the alternative resource that is continuous in time or the alternative resource whose time interval satisfies a preset time interval limit.

Above X ₁ 、X ₂ 、X ₃ And X ₄ A positive integer which can be defined for a protocol or configured on the network side, and X ₁ 、X ₂ 、X ₃ And X ₄ The same or different values may be present in the same or different values. As described above X ₁ 1 or 2, etc., X is as defined above ₃ 2 or 2, etc., as described above for X ₂ 10, 20 or 30, etc., X is as defined above ₄ 10, 20 or 30, etc.

Front X in the alternative resource concentrated time sequencing ₁ The candidate resources are understood as X before each candidate resource is selected according to the sequencing in the candidate resource set ₁ And the alternative resources. It should be noted that, in the embodiment of the present application, it is not necessary to sort the alternative resources in order, for example, directly select the previous X according to the time of the alternative resource ₁ And the alternative resources.

The front X ₁ Some of the resources in the individual alternatives may be,select X ₁ The time continuous alternative resource or the alternative resource meeting the preset time interval limit or the former part resource in the individual alternative resources.

Front X in the alternative resource concentrated time sequencing ₂ % of the alternative resources may be X preceding the selection time ₂ In% if the number of alternative resources in the set of alternative resources is multiplied by X ₂ % of the operation result is a non-integer, and the operation result can be rounded to determine the resource to be transmitted.

The resource selection window may be protocol defined or network side configured.

The candidate resources in the target time unit in the candidate resource set may be as shown in fig. 3, where the candidate resources in the first 2 time units are selected in the candidate resource set.

In this embodiment, the terminal may select the candidate resource that is temporally forward as the resource to be transmitted as far as possible, so as to perform SL transmission as early as possible, e.g. from X that is temporally forward ₂ ％/X ₁ Selecting part or all of the candidate resources as the resources to be transmitted, or selecting the candidate resources from the first X in the resource selection window ₄ ％/X ₃ And selecting part or all of the alternative resources in the time unit as resources to be transmitted.

It should be noted that, in this embodiment, the to-be-transmitted resource is not limited to the first candidate resource, and, for example, the to-be-transmitted resource selected by the terminal may further include other candidate resources besides the first candidate resource.

In some embodiments, the candidate resources are collected and ranked first X in time sequence ₁ The partial resources in the candidate resources may be the nth candidate resource in the candidate resource set time sequencing, where n is less than or equal to the X ₁ Positive integer of X ₁ In case of 3, the 1 st or 2 nd alternative resource is selected as the resource to be transmitted.

Specifically, the nth alternative resource is the nth alternative resource which is temporally forward, so that the terminal can select the nth alternative resource which is temporally forward as possible as the resource to be transmitted, so as to execute SL transmission as early as possible.

In an alternative embodiment, the terminal selects or preferentially selects a second alternative resource as the resource to be transmitted, where the second alternative resource is at least one alternative resource in the alternative resource set that is time-continuous with a target resource, and the target resource is a resource that has been determined before the terminal selects the resource to be transmitted.

The selecting the second alternative resource preferentially as the resource to be transmitted may be selecting the second alternative resource preferentially or as much as possible among the candidate resources that are eligible if there are multiple candidate resources that are eligible.

Wherein the resources that have been determined before the terminal selects the resources to be transmitted may include at least one of:

the terminal selects the resource which is already selected before the resource to be transmitted is selected;

the resource scheduled by the network side before the terminal selects the resource to be transmitted;

and the resources scheduled by other terminals before the terminal selects the resources to be transmitted.

The resources that the terminal has selected before selecting the resources to be transmitted may be resources that the terminal selects according to other resource selection procedures.

Optionally, the second candidate resource and the target resource satisfy a preset relationship.

The preset relationship may be a relationship defined in a protocol or configured on a network side, where the preset relationship includes at least one of the following:

the second alternative resource and the time resource of the target resource do not overlap;

the sum of the time lengths of the second alternative resource and the target resource is smaller than a preset duration.

In this way, since the time resources of the second alternative resource and the target resource do not overlap, SL transmission can be performed in as much time as possible, and the sum of the time lengths of the second alternative resource and the target resource is smaller than the preset duration, so that the time lengths of the second alternative resource and the target resource can be prevented from exceeding the time limit. The preset duration may be a duration defined by a protocol or configured by a network side.

In the above embodiment, when the resource selection is performed, if the candidate resource has a time-continuous relationship with the determined resource, the terminal selects or preferentially selects the candidate resource as the resource to be transmitted, so that the resource to be transmitted is continuous in time, and the efficiency of SL transmission is improved.

It should be noted that, in this embodiment, the resource to be transmitted is not limited to the second candidate resource, and, for example, the resource to be transmitted selected by the terminal may also include other candidate resources besides the second candidate resource.

In an alternative embodiment, the resource to be transmitted is a plurality of alternative resources, and a time interval of any two alternative resources in the plurality of alternative resources meets a preset time interval limit.

In this embodiment, selecting or preferentially selecting a plurality of alternative resources whose time interval meets a preset time interval limit may be implemented, so that the selected resources to be transmitted include the alternative resources whose time interval meets the preset time interval limit as much as possible, so that the terminal may perform operations such as LBT or receiving HARQ feedback between the resources to be transmitted, so as to improve SL transmission performance.

Optionally, a time interval of any two alternative resources in the plurality of alternative resources is greater than the LBT duration; and/or

The time interval of any two alternative resources in the plurality of alternative resources is larger than a preset duration, the preset duration is equal to the sum of a first time interval and a preset time, and the first time interval is the time interval between SL transmission and corresponding HARQ feedback of the terminal.

The LBT duration may include one of the following:

a duration of a first type of LBT and a duration of a second type of LBT;

wherein the first type LBT is an LBT of a back-off based channel listening mechanism;

the second type of LBT is LBT with one LBT mechanism before transmission.

The first Type LBT may be a protocol-defined Type 1LBT, and the second Type LBT may be a protocol-defined Type 2A LBT or Type 2B LBT.

In addition, the duration of the first type LBT may be the total duration or the remaining duration of the first type LBT. Wherein the remaining time period is associated with a priority of the service, such as at least one of an L1 priority (L1 priority) of the service, a PC5 5G quality of service identification (PC 5 5G Quality of service Identifier,PQI) value, and a channel access priority (Channel Access Priority Class, CAPC) value.

In some embodiments, the LBT duration may also be a duration of a protocol-defined Type 2C LBT.

In some embodiments, the terminal may determine, according to side link control information (Sidelink Control Information, SCI), that the LBT duration is the duration of the second type LBT, and that the SCI is X before the target time ₅ SCI, X received before a time unit ₅ Is a positive integer.

The terminal demodulates the SCI and acquires COT sharing (COT sharing) information to determine whether the LBT duration is the duration of the second type of LBT according to the information.

The target time includes one of the following:

a resource selection trigger time, a resource selection window start time, a current time, an associated time of the resource selection trigger time, an associated time of the resource selection window start time, and an associated time of the current time.

The current time may be a time when the resource selection is performed; the related time of the resource selection trigger time may be an offset time before or after the resource selection trigger time; the associated time of the resource selection window start time may be an offset time before or after the resource selection window start time; the related time of the current time may be an offset time before or after the current time, where the offset may be defined by a protocol or configured by a network side.

Since the SCI is the terminal before the target time X ₅ SCI received before the time unit so as to meet at least the processing time requirements of SCI demodulation and resource selection preparation, to further improve the SL transmission performance of the terminal.

The preset duration may be a duration defined by a protocol or a duration configured by a network side.

In some embodiments, the preset duration may at least include a sum of a data retransmission preparation time and a HARQ feedback reception time, where the HARQ feedback reception time is at least after a transmission occasion (occalasion) of a plurality of physical sidelink feedback channels (Physical Sidelink Feedback Channel, PSFCH) corresponding to one data transmission.

In some embodiments, the HARQ feedback corresponding to the SL transmission may be: and PSFCH transmission corresponding to an Nth PSFCH transmission opportunity in the plurality of PSFCH transmission opportunities corresponding to the SL transmission, wherein N is a positive integer.

Wherein N is a positive integer defined by a protocol, configured by a network side or determined by a terminal.

For example, if there are multiple HARQ feedback resources (PSFCH) for one data transmission, the next resource to be transmitted is at least X after the nth PFSCH timing corresponding to the last resource to be transmitted ₇ A time unit, where the Nth may be the last PSFCH occision, X ₇ Is a positive integer.

In this embodiment, the time interval between the multiple resources to be transmitted may be longer than the LBT duration, so that the terminal may complete LBT between different resources to be transmitted, so as to advance the time of SL transmission as early as possible. And the time interval of any two alternative resources in the plurality of alternative resources is longer than the preset duration, so that the transmission efficiency can be ensured.

It should be noted that, in this embodiment, the to-be-transmitted resource is not limited to the above-mentioned multiple candidate resources, and the to-be-transmitted resource selected by the terminal may also include other candidate resources besides the above-mentioned multiple candidate resources.

As an optional implementation manner, the terminal selects or preferentially selects a third alternative resource meeting a preset condition as a resource to be transmitted, where the preset condition is that a time interval between the preset condition and a target time is greater than an LBT duration, and the target time includes one of the following:

The selecting or preferentially selecting the third candidate resource satisfying the preset condition may be selecting or preferentially selecting the third candidate resource in the candidate resource set, or may be selecting or preferentially selecting the third candidate resource in at least one of the first candidate resource and the second candidate resource.

If there are multiple candidate resources in the candidate resource set that meet the preset condition, the third candidate resource is: front X in time sequencing of a plurality of alternative resources meeting the preset condition in the alternative resource set ₆ Alternative resources, X ₆ Is a positive integer.

Wherein X is ₆ Positive integers configured for protocol conventions or network sides. Therefore, the method can realize that a plurality of alternative resources meeting preset conditions select the alternative resource with the time before as much as possible as the resource to be transmitted.

The third alternative resource satisfying the preset condition may be understood as an alternative resource having a time interval from the target time greater than the LBT duration.

The above LBT duration may be referred to the corresponding description of the above embodiment, and will not be repeated here.

In this embodiment, since the third candidate resource satisfying the preset condition is selected or preferentially selected as the resource to be transmitted, the time interval between the target time and the resource to be transmitted can be as long as the LBT duration, so as to ensure the LBT time for the terminal to transmit on the resource to be transmitted, thereby improving the efficiency of resource selection and the resource utilization rate. For example: as shown in fig. 4, the 4 th alternative resource is selected as the resource to be transmitted, that is, the first alternative resource satisfying the above-mentioned preset condition is executed.

It should be noted that, in this embodiment, the to-be-transmitted resource is not limited to the third alternative resource, and, for example, the to-be-transmitted resource selected by the terminal may further include other alternative resources besides the third alternative resource.

As an alternative embodiment, the to-be-transmitted resource does not include an alternative resource where the PSFCH transmission opportunity is located.

The candidate resources where the to-be-transmitted resource does not include the PSFCH transmission opportunity may be the candidate resources where the PSFCH transmission opportunity is not selected or is preferentially not selected when the to-be-transmitted resource is selected, so that collision of the to-be-transmitted resource due to the inclusion of the PSFCH transmission opportunity can be avoided.

As an alternative embodiment, the terminal performs LBT before the resource to be transmitted, including:

the terminal executes LBT before the first resource to be transmitted;

the method further comprises the steps of:

in case of failure of the LBT, the terminal performs the LBT before the target resource;

wherein the target resource comprises at least one of:

and the next transmission starting position in the first resource to be transmitted and the second resource to be transmitted.

The first to-be-transmitted resource may be any to-be-transmitted resource selected in step 201.

The next transmission start position in the first to-be-transmitted resource may be that the first to-be-transmitted resource includes a plurality of transmission start positions (e.g. includes a plurality of time units), and the LBT executed corresponds to a transmission start position after the transmission start position.

In this embodiment, since the target resource includes at least one of the next transmission start position in the first resource to be transmitted and the second resource to be transmitted, LBT can be performed as early as possible to perform SL transmission as early as possible.

Optionally, the first resource to be transmitted includes a plurality of time units, the next transmission start position is a next time unit of a first time unit in the plurality of time units, and the first time unit is a time unit closest to the LBT; and/or

The first resource to be transmitted is reserved transmission resource.

The first time unit may be a first time unit of the plurality of time units, as shown in fig. 5, where LBT is performed before the 2 nd time unit of the to-be-transmitted resource 1, and if LBT is successful, the 2 nd, 3 rd and 4 th time units of the to-be-transmitted resource 1 are transmission resources.

In some embodiments, the first time unit may be the 2 nd or the 3 rd time unit, that is, LBT may be performed multiple times for one resource to be transmitted.

The reserved resources to be transmitted are reserved resources to be transmitted for the terminal.

In some embodiments, the next transmission start position may be the first M time units in the first to-be-transmitted resource, so that it may be ensured that there is enough resource to occupy the COT after the LBT is successful.

For example: the terminal fails in LBT before the first resource to be transmitted, if the first resource to be transmitted is multi-slot resource, the terminal can continuously determine whether the LBT is successful before the next transmission starting position, and SL transmission is performed after the LBT is successful. The next transmission starting position may be the first M single-slot resources of the multi-slot resources, so as to ensure that enough resources occupy the COT after the LBT is successful. If there is a sub-slot or mini-slot based transmission, the next transmission start position may be the start position of the sub-slot or mini-slot.

The second to-be-transmitted resource may be a next to-be-transmitted resource. For example: the terminal selects an alternative resource from the alternative resource set as a resource to be transmitted, and the method comprises the following steps:

the terminal selects a plurality of alternative resources from the alternative resource set as a plurality of resources to be transmitted;

the second resource to be transmitted is a resource to be transmitted in front of the first resource to be transmitted in the plurality of resources to be transmitted.

As shown in fig. 6, if the terminal fails to perform LBT before the resource to be transmitted 1, the terminal performs LBT before the resource to be transmitted 2, and if the LBT is successful, the resource to be transmitted 2 is a transmission resource.

This allows the selection of the earlier resource to be transmitted to perform LBT to perform SL transmission as early as possible.

In some embodiments, if the transmission time after the LBT is successfully performed before the next transmission start position is the next to-be-transmitted resource, the terminal performs SL transmission on the next to-be-transmitted resource or performs LBT before the next to-be-transmitted resource.

As an alternative embodiment, the method further comprises:

and triggering resource reselection by the terminal under the condition that the LBT fails.

In this embodiment, the terminal may trigger the resource reselection in case there are no available resources to be transmitted.

In this embodiment, the resource reselection is triggered, so that the terminal determines the transmission resource of the SL as soon as possible in the case of LBT failure.

In addition, in the embodiment of the present application, in the case where LBT is successful, the terminal performs SL transmission.

As an alternative embodiment, the method further comprises:

before the terminal uses or reserves the resource to be transmitted, the terminal performs a checking operation on the resource to be transmitted, wherein the checking operation comprises at least one of a re-evaluation check (re-evaluation check) and a pre-occupation check (pre-evaluation check).

Wherein, the above-mentioned check operation execution time may include at least one of the following:

when the remaining time of the first type LBT is less than or equal to the preset time;

the time when the terminal can perform a second type LBT;

the second type of LBT is LBT with one LBT mechanism before transmission.

When the remaining time of the first type LBT is less than or equal to the preset time, it may be understood that the checking operation is performed when the remaining time of the terminal performing the first type LBT is less than or equal to the preset time, where the preset time is defined by a protocol or configured on the network side, for example, the preset time is 0, 25us,16us, and so on.

The time when the terminal can perform the second type LBT may be understood as that the terminal can also perform the second type LBT when the checking operation is performed, i.e., the checking operation is performed when the second type LBT can be performed.

In some embodiments, the checking operation execution time may further include a time of Type 2C LBT defined by the terminal executable protocol, and the checking operation execution time may further include a time determined by the terminal based on implementation, or a time T3 before the alternative resource, where T3 is a positive integer.

In this embodiment, before the terminal uses or reserves the resource to be transmitted, the checking operation is performed on the resource to be transmitted, so that the transmission effect of the transmission resource for the terminal to finally perform SL transmission is better, for example, the transmission time is earlier.

Optionally, the checking operation reselects the resource to be transmitted if at least one of the following conditions is satisfied:

the resources to be transmitted which are earlier than the resources to be transmitted can be selected in the newly identified alternative resource set of the terminal according to the at least one rule;

the LBT cannot be completed for a period of time from the resource to be transmitted.

In this embodiment, it may be achieved that the terminal identifies a new set of alternative resources, and if an earlier resource to be transmitted can be selected according to at least one rule, the terminal reselects the resource to be transmitted, and the duration from the resource to be transmitted is insufficient to complete an LBT procedure (LBT procedure), the terminal reselects the resource to be transmitted to perform SL transmission as early as possible.

In the embodiment of the application, the terminal selects an alternative resource from the alternative resource set as a resource to be transmitted, where the resource to be transmitted is selected according to at least one rule as follows: selecting an alternative resource with the front time, selecting an alternative resource which is continuous in time, and selecting an alternative resource with the time interval meeting the preset time interval limit; and the terminal executes LBT before the resource to be transmitted. In this way, LBT can be implemented on the resources to be transmitted, which are at least one of time-ahead, time-continuous and meet the preset time interval limit.

According to the transmission resource determining method provided by the embodiment of the application, the execution body can be the transmission resource determining device. In the embodiment of the present application, a method for executing transmission resource determination by a transmission resource determining apparatus is taken as an example, and the transmission resource determining apparatus provided in the embodiment of the present application is described.

Referring to fig. 7, fig. 7 is a block diagram of a transmission resource determining apparatus according to an embodiment of the present application, as shown in fig. 7, including:

a selection module 701, configured to select an alternative resource from the alternative resource set as a resource to be transmitted, where the resource to be transmitted is selected according to at least one rule as follows: selecting an alternative resource with the front time, selecting an alternative resource which is continuous in time, and selecting an alternative resource with the time interval meeting the preset time interval limit;

a first execution module 702 is configured to execute listen before talk LBT before the resource to be transmitted.

Optionally, the terminal selects or preferentially selects a first alternative resource as the resource to be transmitted, where the first alternative resource includes one of the following:

some or all of the first X1 alternative resources in the alternative resource concentration time sequencing;

part or all of the previous X2% of the candidate resources in the candidate resource concentration time sequencing;

The alternative resources are concentrated to some or all of the alternative resources in a target time unit, wherein the target time unit is the first X3 time units in a resource selection window or the target time unit is the first X4% time units in the resource selection window;

wherein X1, X2, X3 and X4 are positive integers.

Optionally, the terminal selects or preferentially selects a second alternative resource as the resource to be transmitted, where the second alternative resource includes:

and the nth alternative resource in the time sequencing of the alternative resource sets is n being a positive integer less than the number of the alternative resources of the alternative resource sets.

Optionally, the terminal selects or preferentially selects a second alternative resource as the resource to be transmitted, where the second alternative resource is at least one alternative resource in the alternative resource set that is continuous with a target resource in time, and the target resource is a resource that has been determined before the terminal selects the resource to be transmitted.

Optionally, the resources that have been determined before the terminal selects the resources to be transmitted include at least one of:

Optionally, the second candidate resource and the target resource satisfy a preset relationship, where the preset relationship includes at least one of the following:

Optionally, the resource to be transmitted is a plurality of alternative resources, and a time interval of any two alternative resources in the plurality of alternative resources meets a preset time interval limit.

The time interval of any two alternative resources in the plurality of alternative resources is larger than a preset time length, the preset time length is equal to the sum of a first time interval and a preset time, and the first time interval is the time interval of the feedback of the side link SL transmission of the terminal and the corresponding hybrid automatic repeat request HARQ.

Optionally, the HARQ feedback corresponding to the SL transmission is: and PSFCH transmission corresponding to an Nth PSFCH transmission opportunity in the corresponding multiple physical sidelink feedback channels PSFCH transmission opportunities is carried out, wherein N is a positive integer.

Optionally, the terminal selects or preferentially selects a third alternative resource meeting a preset condition as a resource to be transmitted, where the preset condition is that a time interval between the preset condition and a target time is greater than an LBT duration, and the target time includes one of the following:

Optionally, the LBT duration includes one of:

a duration of a first type of LBT and a duration of a second type of LBT;

the second type of LBT is LBT with one LBT mechanism before transmission.

Optionally, the terminal determines, according to a side link control information SCI, that the LBT duration is the duration of the second type LBT, where SCI is an SCI received by the terminal X5 time units before the target time, and X5 is a positive integer.

Optionally, in the case that the candidate resource set has a plurality of candidate resources that meet the preset condition, the third candidate resource is: front X in time sequencing of a plurality of alternative resources meeting the preset condition in the alternative resource set ₆ Alternative resources, X ₆ Is a positive integer.

Optionally, the first executing module 702 is configured to execute LBT before the first resource to be transmitted;

the apparatus further comprises:

a second execution module, configured to execute LBT before the target resource in case of failure of the LBT;

wherein the target resource comprises at least one of:

The first resource to be transmitted is reserved resource to be transmitted.

Optionally, the selecting module 701 is configured to select a plurality of candidate resources from the candidate resource set as a plurality of resources to be transmitted;

Optionally, the apparatus further includes:

and the triggering module is used for triggering resource reselection by the terminal under the condition that the LBT fails.

Optionally, the apparatus further includes:

and the checking module is used for executing checking operation on the resources to be transmitted before the terminal uses or reserves the resources to be transmitted, wherein the checking operation comprises at least one of a resource reevaluation checking and a resource occupation checking.

Optionally, the checking operation execution time includes at least one of:

the time when the terminal can perform a second type LBT;

the second type of LBT is LBT with one LBT mechanism before transmission.

Optionally, the to-be-transmitted resource does not include an alternative resource where the physical sidelink feedback channel PSFCH is located.

Optionally, the candidate resources in the candidate resource set include at least one of:

A single time unit resource;

a plurality of time unit resources;

The transmission resource determining device can improve SL transmission performance of the terminal.

The transmission resource determining device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an 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 listed in embodiments of the present application, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not specifically limited.

The transmission resource determining device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 2, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Optionally, as shown in fig. 8, the embodiment of the present application further provides a communication device 800, including a processor 801 and a memory 802, where a program or an instruction that can be executed on the processor 801 is stored in the memory 802, for example, when the communication device 800 is a terminal, the program or the instruction is executed by the processor 801 to implement each step of the above-mentioned resource transmission determining method embodiment, 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 a terminal, which comprises a processor and a communication interface, wherein the processor is used for selecting alternative resources from the alternative resource set as resources to be transmitted, and the resources to be transmitted are selected according to at least one rule as follows: selecting an alternative resource with the front time, selecting an alternative resource which is continuous in time, and selecting an alternative resource with the time interval meeting the preset time interval limit; the communication interface is used for executing LBT before the resource to be transmitted. The terminal embodiment corresponds to the above-mentioned resource transmission determining method embodiment, and each implementation process and implementation manner of the above-mentioned method embodiment are applicable to the terminal embodiment, and can achieve the same technical effects. Specifically, fig. 9 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 900 includes, but is not limited to: at least some of the components of the radio frequency unit 901, the network module 902, the audio output unit 903, the input unit 904, the sensor 905, the display unit 906, the user input unit 907, the interface unit 908, the memory 909, and the processor 910, etc.

Those skilled in the art will appreciate that the terminal 900 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 910 by a power management system so as to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 9 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 understood that in the embodiment of the present application, the input unit 904 may include a graphics processing unit (Graphics Processing Unit, GPU) 9041 and a microphone 9042, and the graphics processing unit 9041 processes image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. Touch panel 9071, also referred to as a touch screen. The touch panel 9071 may include two parts, a touch detection device and a touch controller. Other input devices 9072 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 this embodiment, after receiving downlink data from a network side device, the radio frequency unit 901 may transmit the downlink data to the processor 910 for processing; in addition, the radio frequency unit 901 may send uplink data to the network side device. Typically, the radio frequency unit 901 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 909 may be used to store software programs or instructions as well as various data. The memory 909 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage 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 909 may include a volatile memory or a nonvolatile memory, or the memory 909 may include both volatile and nonvolatile memories. 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 RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 909 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., 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 910.

Wherein the processor 910 is configured to select an alternative resource from the alternative resource set as a resource to be transmitted, where the resource to be transmitted is selected according to at least one of the following rules: selecting an alternative resource with the front time, selecting an alternative resource which is continuous in time, and selecting an alternative resource with the time interval meeting the preset time interval limit;

the radio frequency unit 901 is configured to perform LBT before the resource to be transmitted.

wherein X1, X2, X3 and X4 are positive integers.

Optionally, the LBT duration includes one of:

a duration of a first type of LBT and a duration of a second type of LBT;

the second type of LBT is LBT with one LBT mechanism before transmission.

Optionally, the terminal performs LBT before the resource to be transmitted, including:

the terminal executes LBT before the first resource to be transmitted;

the method further comprises the steps of:

wherein the target resource comprises at least one of:

The first resource to be transmitted is reserved resource to be transmitted.

Optionally, the selecting, by the terminal, the alternative resource from the alternative resource set as the resource to be transmitted includes:

Optionally, the processor 910 is further configured to:

and triggering resource reselection under the condition that the LBT fails.

Optionally, the processor 910 is further configured to:

before the terminal uses or reserves the resource to be transmitted, performing an inspection operation on the resource to be transmitted, wherein the inspection operation comprises at least one of a resource re-evaluation inspection and a resource occupation inspection.

Optionally, the checking operation execution time includes at least one of:

the time when the terminal can perform a second type LBT;

the second type of LBT is LBT with one LBT mechanism before transmission.

a single time unit resource;

a plurality of time unit resources;

The terminal can improve SL transmission performance of the terminal.

The embodiment of the application also provides a readable storage medium, and the readable storage medium stores a program or instructions thereon, which when executed by a processor, implement the steps of the transmission resource determining method provided by the embodiment of the application.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to run a program or an instruction, implement each process of the above embodiment of the transmission resource determining method, and achieve the same technical effect, so that repetition is avoided, and no redundant description is provided herein.

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 embodiments of the present application further provide 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 foregoing transmission resource determining method embodiment, and the same technical effects are achieved, so that repetition is avoided, and details are not repeated herein.

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 also 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 solutions 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 (such as ROM/RAM, magnetic disk, optical disk), comprising several 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 described in 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 of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A transmission resource determination method, comprising:

the terminal performs listen before talk LBT before the resource to be transmitted.

2. The method of claim 1, wherein the terminal selects or prioritizes a first alternative resource as the resource to be transmitted, the first alternative resource comprising one of:

the alternative resources are concentrated to part or all of the alternative resources in a target time unit, and the target time unit is the front X in a resource selection window ₃ A time unit, or the target time unit is the front X in the resource selection window ₄ % time of A unit;

wherein X is ₁ 、X ₂ 、X ₃ And X ₄ Is a positive integer.

3. The method of claim 1, wherein the terminal selects or prioritizes a second alternative resource as the resource to be transmitted, the second alternative resource being at least one of the set of alternative resources that is time-continuous with a target resource, the target resource being a resource that has been determined prior to the terminal selecting the resource to be transmitted.

4. The method of claim 3, wherein the resources that have been determined prior to the terminal selecting the resources to be transmitted comprise at least one of:

5. The method of claim 4, wherein the second candidate resource and the target resource satisfy a preset relationship, the preset relationship comprising at least one of:

6. The method of claim 1, wherein the resource to be transmitted is a plurality of alternative resources, and wherein a time interval of any two of the plurality of alternative resources satisfies a preset time interval limit.

7. The method of claim 6, wherein a time interval of any two of the plurality of alternative resources is greater than an LBT duration; and/or

8. The method of claim 7, wherein the HARQ feedback for the SL transmission is: and PSFCH transmission corresponding to an Nth PSFCH transmission opportunity in the corresponding multiple physical sidelink feedback channels PSFCH transmission opportunities is carried out, wherein N is a positive integer.

9. The method according to any of claims 1 to 8, wherein the terminal selects or preferentially selects a third alternative resource satisfying a preset condition as a resource to be transmitted, the preset condition being that a time interval from a target time is greater than an LBT duration, the target time comprising one of:

10. The method of claim 9, wherein the LBT duration comprises one of:

a duration of a first type of LBT and a duration of a second type of LBT;

the second type of LBT is LBT with one LBT mechanism before transmission.

11. The method of claim 10, wherein the terminal determines the LBT duration as the duration of the second type of LBT based on a side link control information SCI, the SCI being the duration of the terminal atX before the target moment ₅ SCI, X received before a time unit ₅ Is a positive integer.

12. The method of claim 9, wherein in the case where there are a plurality of candidate resources in the candidate resource set that satisfy the preset condition, the third candidate resource is: front X in time sequencing of a plurality of alternative resources meeting the preset condition in the alternative resource set ₆ Alternative resources, X ₆ Is a positive integer.

13. The method according to any of claims 1 to 8, wherein the terminal performs LBT before the resources to be transmitted, comprising:

the terminal executes LBT before the first resource to be transmitted;

the method further comprises the steps of:

wherein the target resource comprises at least one of:

14. The method of claim 13, wherein the first resource to be transmitted comprises a plurality of time units, the next transmission start position being a next time unit of a first time unit of the plurality of time units, the first time unit being a time unit of the plurality of time units closest to performing the LBT; and/or

The first resource to be transmitted is reserved resource to be transmitted.

15. The method of claim 13, wherein the terminal selects an alternative resource from a set of alternative resources as a resource to be transmitted, comprising:

16. The method of any one of claims 1 to 8, wherein the method further comprises:

17. The method of any one of claims 1 to 8, wherein the method further comprises:

before the terminal uses or reserves the resource to be transmitted, the terminal performs an inspection operation on the resource to be transmitted, wherein the inspection operation comprises at least one of a resource re-evaluation inspection and a resource occupation inspection.

18. The method of claim 17, wherein the inspection operation execution time comprises at least one of:

the time when the terminal can perform a second type LBT;

the second type of LBT is LBT with one LBT mechanism before transmission.

19. The method of claim 18, wherein the checking operation reselects resources to be transmitted if at least one of the following conditions is satisfied:

20. The method according to any of claims 1 to 8, wherein the resources to be transmitted do not comprise alternative resources on which physical sidelink feedback channel, PSFCH, transmission occasions are located.

21. The method of any of claims 1 to 8, wherein the candidate resources in the candidate resource set comprise at least one of:

a single time unit resource;

a plurality of time unit resources;

22. A transmission resource determining apparatus, comprising:

and the first execution module is used for executing Listen Before Talk (LBT) before the resource to be transmitted.

23. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, performs the steps of the transmission resource determination method of any one of claims 1 to 21.

24. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the transmission resource determination method according to any of claims 1 to 21.