Method and apparatus for determining resource availability

Abstract

The present application relates to a method and apparatus for determining resource availability. One embodiment of the present disclosure provides a method for determining resource availability, comprising: selecting a plurality of resources from a resource selection window; determining a sensing window based on the selected plurality of resources; and determining the availability of the plurality of resources based on sensing results in the sensing window.

Description

Technical Field

[0001] The present disclosure relates to sidelink communications and, more particularly, to determining resource availability during sidelink communications. Background Art

[0002] In LTE V2X, partial sensing is introduced for pedestrian-UE (P-UE) to perform sensing with reduced power consumption. The resource reservation period may contain {100, 200, 300, ..., 1000 ms}, so if it is desired to select resources in subframe y, the P-UE may sense the availability of subframe y at the following times: {y-100, y-200, y-300, ..., y-1000 ms}.

[0003] In NR (New Radio), the resource reservation period may include {0, 1: 99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 ms}, further including a short resource reservation period ranging from 1 to 99 for emergency data transmission.

[0004] Therefore, sensing the availability of subframe y only at time y-100, y-200, y-300, ..., y-1000 ms may not be sufficient to avoid resource conflicts with other UEs (eg, vehicle UEs (V-UEs)) utilizing a short resource reservation period. Summary of the invention

[0005] It is desirable to provide a solution to avoid resource conflicts.

[0006] One embodiment of the present disclosure provides a method for determining resource availability, comprising: selecting a plurality of resources from a resource selection window; determining a sensing window based on the selected plurality of resources; and determining the availability of the plurality of resources based on sensing results in the sensing window.

[0007] Another embodiment of the present disclosure provides a device comprising: a non-transitory computer-readable medium having computer-executable instructions stored thereon; a receiving circuit system; a transmitting circuit system; and a processor coupled to the non-transitory computer-readable medium, the receiving circuit system, and the transmitting circuit system, wherein the computer-executable instructions cause the processor to implement the method for determining resource availability, which includes: selecting a plurality of resources from a resource selection window; determining a sensing window based on the selected plurality of resources; and determining the availability of the plurality of resources based on sensing results in the sensing window. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A schematic diagram illustrating a wireless communication system according to some embodiments of the present disclosure.

[0009] Figure 2 Describes a solution for determining resource availability.

[0010] Figure 3 A solution for resource selection according to some embodiments of the present disclosure is described.

[0011] Figure 4 A solution for determining resource availability according to some embodiments of the present disclosure is described.

[0012] Figure 5 Another solution for determining resource availability according to some embodiments of the present disclosure is described.

[0013] Figure 6 Another solution for determining resource availability according to some embodiments of the present disclosure is described.

[0014] Figure 7 A method for wireless communication performed by a UE according to a preferred embodiment of the present disclosure is described.

[0015] Figure 8 A block diagram illustrating a UE according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0016] The detailed description of the accompanying drawings is intended as a description of the preferred embodiments of the present invention and is not intended to represent the only form in which the present invention can be practiced. It should be understood that the same or equivalent functions can be accomplished by different embodiments that are intended to be included in the spirit and scope of the present invention.

[0017] Reference will now be made in detail to some embodiments of the present application, examples of which are illustrated in the accompanying drawings. To facilitate understanding, embodiments are provided under specific network architectures and new service scenarios (e.g., 3GPP 5G, 3GPP LTE Release 8, etc.). It is considered that, with the development of network architectures and new service scenarios, all embodiments in the present application are also applicable to similar technical problems; and in addition, the terms cited in the present application may be changed, which should not affect the principles of the present application.

[0018] UE in NR V2X scenario may be referred to as V2X UE. V2X UE that transmits data according to side link resources scheduled by a base station (BS) may be referred to as UE for transmission, transmission UE, transmission V2X UE, Tx UE, V2X Tx UE, SL Tx UE, or the like. V2X UE that receives data according to side link resources scheduled by a BS may be referred to as UE for reception, receiving UE, receiving V2X UE, Rx UE, V2X Rx UE, SL Rx UE, or the like. V2X UE may include pedestrian UEs with limited power, and also include vehicle UEs without power limitation.

[0019] A V2X UE may include a computing device such as a desktop computer, a laptop computer, a personal digital assistant (PDA), a tablet computer, a smart TV (e.g., a TV connected to the Internet), a set-top box, a game console, a security system (including security cameras), an in-vehicle computer, a network device (e.g., a router, switch, and modem), an Internet of Things (IoT) device, or the like.

[0020] According to some embodiments of the present application, the V2X UE may include a portable wireless communication device, a smart phone, a cellular phone, a flip phone, a device with a subscriber identity module, a personal computer, a selective call receiver, or any other device capable of sending and receiving communication signals on a wireless network.

[0021] According to some embodiments of the present application, the V2X UE includes a wearable device, such as a smart watch, a fitness bracelet, an optical head-mounted display, or the like. In addition, the V2X UE may be referred to as a user unit, a mobile device, a mobile station, a user, a terminal, a mobile terminal, a wireless terminal, a fixed terminal, a user station, a user terminal, or a device, or described using other terms used in the art. The V2X UE may communicate directly with the BS via an uplink (UL) communication signal.

[0022] The BS in the NR V2X scenario may be referred to as a base unit, base station, access point, access terminal, macro cell, Node-B, enhanced Node B (eNB), gNB, home Node-B, relay node, device, remote unit, or described by any other term used in the art. The BS may be distributed over a geographic area. In general, a BS is part of a radio access network that may include one or more controllers that are communicatively coupled to one or more corresponding base stations.

[0023] The BSs are typically communicatively coupled to one or more packet core networks (PCNs), which may be coupled to other networks, such as packet data networks (PDNs) (e.g., the Internet) and public switched telephone networks, among other networks. These and other elements of the radio access network and core network are not illustrated, but are generally well known to those of ordinary skill in the art. For example, one or more BSs may be communicatively coupled to a mobility management entity (MME), a serving gateway (SGW), and / or a packet data network gateway (PGW).

[0024] The BS may serve a number of V2X UEs within a service area (e.g., a cell or cell sector) via wireless communication links. The BS may communicate directly with one or more of the V2X UEs via communication signals. For example, the BS may serve V2X UEs within a macro cell.

[0025] The side link communication between Tx UE and Rx UE in the NR V2X scenario includes multicast communication, unicast communication or broadcast communication.

[0026] The embodiments of the present application may be provided in a network architecture that adopts various service scenarios, such as (but not limited to) 3GPP 3G, Long Term Evolution (LTE), LTE-Advanced (LTE-A), 3GPP 4G, 3GPP 5G NR, 3GPP LTE Release 12 and above, etc. It is considered that as 3GPP and related communication technologies develop, the terms cited in the present application may change, which should not affect the principles of the present application.

[0027] Figure 1 An exemplary V2X communication system according to some embodiments of the present application is described.

[0028] like Figure 1 As shown in , the V2X communication system includes a base station (i.e., BS 102) and some V2X UEs (i.e., UE 101-A, UE 101-B, and UE 101-C). UE 101-A and UE 101-B are within the coverage of BS 102, and UE 101-C is not within the coverage. UE-101-B and UE 101-C may be pedestrian UEs, and UE 101-A may be a vehicle UE. UE-101-A and UE 101-B may perform sidelink unicast transmission, sidelink multicast transmission, or sidelink broadcast transmission. It is contemplated that according to some other embodiments of the present application, the V2X communication system may include more or fewer BSs and more or fewer V2X UEs. In addition, it is contemplated that, as Figure 1 The names of the V2X UEs (which represent Tx UE, Rx UE, etc.) described and shown in FIG. 1 may be different, such as UE 101c, UE 104f, and UE 108g, or the like.

[0029] In addition, despite Figure 1 The UE 101-A shown in the figure is illustrated in the shape of a car, but it is contemplated that according to some other embodiments of the present application, the V2X communication system may include any type of UE (e.g., a road sign device, a mobile phone, a computer, a laptop computer, an Internet of Things (IoT) device, or other type of device).

[0030] according to Figure 1In some embodiments, UE 101-A and UE 101-C are used as Tx UEs, and UE 101-B and UE 101-C are used as Rx UEs. UE 101-A can exchange V2X messages with UE 101-B or UE 101-C via a side link (e.g., a PC5 interface as defined in a 3GPP profile). UE 101-A can transmit information or data to other UEs within the V2X communication system via side link unicast, side link multicast, or side link broadcast. For example, UE 101-A transmits data to UE 101-B in a side link unicast session. UE 101-A can transmit data to UE 101-B and UE 101-C in a multicast group via a side link multicast transmission session. Moreover, UE 101-A can transmit data to UE 101-B and UE 101-C via a side link broadcast transmission session.

[0031] Alternatively, according to Figure 1 In some other embodiments, UE 101-B acts as a Tx UE and transmits a V2X message, and UE 101-A acts as a Rx UE and receives a V2X message from UE 101-B.

[0032] Figure 1 Both UE 101-A and UE 101-B in the embodiment of the present invention can transmit information to BS 102 and receive control information from BS 102, for example, via the NR Uu interface. BS 102 can define one or more cells, and each cell can have a coverage area. Figure 1 As shown in FIG. 1 , both UE 101 -A and UE 101 -B are within the coverage of BS 102 , and UE 101 -C is outside the coverage of BS 102 .

[0033] like Figure 1 The BS 102 described and shown in the figure is not a specific base station, but may be any base station in the V2X communication system. For example, if the V2X communication system includes two BSs 102, then the situation where the UE 101-A is within the coverage area of ​​any one of the two BSs 102 may be referred to as the situation where the UE 101-A is within the coverage area of ​​the BS 102 in the V2X communication system; and the situation where the UE 101-A is only outside the coverage areas of the two BSs 102 may be referred to as the situation where the UE 101-A is outside the coverage area of ​​the BS 102 in the V2X communication system.

[0034] Figure 2 A solution for determining resource availability performed by a UE (eg, a P-UE) is described. As resource selection is triggered at time n, the P-UE may select y subframes, where the first of the y subframes is located at time t 0 , the second subframe is positioned at time t 1, and the last subframe is located at time t y-1 .

[0035] In the M resource reservation periods {P 0 ,P 1 ,…,P M-1} is configured, the UE may perform sensing and measurement in the subframes at the following time periods: 0 -P 0 to y-1 -P 0 ;t 0 -P 1 to y-1 -P 1 ; ...; and t 0 -P M-1 to y-1 -P M-1 , in order to check the availability of y subframes. The P-UE may not be between two time periods and from time n to time t 0 Sensing is performed within an interval range to save power.

[0036] Resource Retention Period P 0 , P 1 ,…,P M-1 The value of may be selected from the group 100, 200, 300, ..., and 1000 ms, and the size of the partial sensing window is 1000 ms. Although partial sensing is repeated with a period of 100 ms in this embodiment, if the configured or preconfigured resource reservation period is changed, partial sensing may be repeated with other periods. 0 time period.

[0037] In NR, the resource reservation period is configured from the set {0, [1:99], 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} ms. Other UEs (e.g., V-UEs) may be configured with a shorter resource reservation period, e.g., 5 ms. If a V-UE is in the range n to t 0 If the P-UE transmits a resource reservation request in the time period from n to t to reserve resources after 5 ms, the resources requested by the V-UE may overlap with the y resources selected by the P-UE. 0 If no sensing is performed during the time period of , the P-UE does not sense this reservation. In this case, a resource conflict may occur.

[0038] Figure 3 A solution for resource selection according to some embodiments of the present disclosure is described. Figure 3 In, T 0is the size of the sensing window, which can be configured or preconfigured between two values: 100ms and 1100ms. proc,0 The interval of size represents the time interval for processing the information sensed in the sensing window, n represents the time when resource selection is triggered, T 1 Indicates the time interval for reporting sensed information to higher layers and the processing time for resource selection, Indicates the time point when multiple resources start. Indicates the time point when multiple resources end, and T 2 is the size of the selection window. The resources at the location can further retain the following resources.

[0039] When resource selection is triggered at time n, the UE shall determine a set of resources for Physical Sidelink Shared Channel (PSSCH) transmission to be reported to higher layers. 0 To-T proc,0 During the time period, the UE will perform sensing. The values ​​of are defined in time slots in Table 1 below, where μ SL It is the subcarrier spacing (SCS) configuration of the sidelink bandwidth part (BWP).

[0040] Table 1 Depends on the subcarrier spacing

[0041]

[0042] T 1 The size depends on UE implementation plan under the conditions, where In Table 2 below, it is defined in time slots, and μ SL It is the SCS configuration of BWP.

[0043] Table 2 Depends on the subcarrier spacing

[0044]

[0045] T 2 The value is based on T 2min and the remaining packet delay budget in the time slot, where T 2min From the L1 priority prio TX The higher-level parameter t2min_SelectionWindow for a given value of is set to the corresponding value.

[0046] If T 2min is shorter than the remaining packet delay budget (in time slots), then T 2 Depending on the constraint condition T 2min≤T 2 ≤ remaining packet budget (in time slots) for UE implementation; otherwise T 2 is set to the remaining packet delay budget (in time slots), i.e., T 2 = Remaining group budget.

[0047] In summary, the UE determines through its implementation the location in the selection window. A set of resources at which the time interval [n+T 1 ,n+T 2 ] 1 and T 2 The value of is based on the condition T 1 ≤4 and T 2min (prio TX )≤T 2 ≤100 is determined by the UE implementation plan, provided that T 2min (prio TX ) by a higher layer for prio TX Provided, otherwise 20≤T 2 ≤100. The selected T 2 The value should meet the delay requirements and the total number of resources, and Y should be greater than or equal to the high-level parameter of the minimum candidate resource minNumCandidateSF.

[0048] A set of possible resource reservation periods is selected from the group consisting of the following values: 0, [1:99], 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 ms. In the sidelink control information (SCI), less than or equal to 4 bits are used to indicate a period, and a set of actual values ​​is configured or preconfigured.

[0049] Figure 4 A solution for determining resource availability according to some embodiments of the present disclosure is described.

[0050] exist Figure 4 In the example, the UE is aware that resource selection can be triggered at time n. Then, the UE selects a number of resources in the selection window. Each selected resource can be a time slot, a plurality of consecutive time slots, a subframe, a plurality of consecutive subframes, a subchannel, a plurality of consecutive subchannels, or the like. The total number of resources is denoted by Y, and these resources are located at time Next, the UE determines a sensing window. The sensing window includes two parts, one of which is from time nT 0 To time nT proc,0 The main sensing window of T 0 Can be preconfigured, and the time interval Tproc, 0is the time required by the UE to process the sensed data. Another sensing window is the range from time nT proc,0 Time Additional sensing window.

[0051] The configured short retention period may be 1, 2, ..., or 99 ms. The UE may be within the range of time nT proc,0 Time That is, the UE performs full sensing in the additional sensing window ranging from time nT proc,0 arrive The additional sensing window is used to sense each resource in order to determine whether the selected resource is Alternatively, the UE may perform partial sensing in the additional sensing window based on the configured retention period. In the primary sensing window, the UE may perform full sensing or partial sensing depending on actual requirements.

[0052] The UE may determine whether to perform sensing in the additional sensing window based on the Y selected resources and the value of the short resource reservation period configured with the resource pool.

[0053] according to Figure 4 , if another UE reserves one of the Y selected resources in the additional sensing window, then the maximum resource retention period should be less than or equal to the time of the last resource in a set of selected resources minus the start time of the additional sensing window, which is expressed as: It is equal to The minimum resource reservation period should be greater than or equal to the time of the first resource in a set of selected resources minus the end time of the additional sensing window, which is expressed as:

[0054] In summary, when the resource retention period set has a value ranging from arrive When a resource reservation period is reached, the UE needs to perform sensing in the additional sensing window; otherwise, the UE may not perform sensing in the additional sensing window.

[0055] Figure 5 Another solution for determining resource availability according to some embodiments of the present disclosure is described.

[0056] exist Figure 5 In the sensing window, the UE is aware that resource selection is triggered at time n. Then, the UE selects a number of resources in the selection window. The range of the sensing window is defined based on Y selected time slots. Each selected resource can be a time slot, a plurality of consecutive time slots, a subframe, a plurality of consecutive subframes, or the like. The total number of resources is denoted by Y, and these resources are located at time Next, the UE determines the range of the sensing window from arrive definition And the sensing window is from n′-T 0 to n′-T proc,0 Scope definition.

[0057] exist Figure 5 In the process, UE is in the range from n′-T 0 to n′-T proc,0 The sensing is performed during a time interval, which can be All reserved resources are checked before the first resource in the selected resource, and Figure 2 Compared with the sensing solution in , this solution can transmit with short resource reservation from time n to time The probability of resource conflict is reduced when the message is sent within the interval.

[0058] The higher layer may also trigger the UE to report to the higher layer at time The availability of a subset of resources at n for physical sidelink control channel (PSCCH) or PSSCH transmission. After receiving the trigger, the UE shall 1 Reports a subset of resources during a time interval of . Figure 4 and 5 In the solution of ), the UE can determine the availability of resources selected for PSCCH or PSSCH transmission. The UE can 1 Reports a subset of resources to higher layers during time intervals.

[0059] Figure 6 Another solution for determining resource availability according to some embodiments of the present disclosure is described.

[0060] The actual sensed resource is determined by the configured parameter sl-ResourceReservePeriodList-r16 of the resource pool. There are up to 16 resource reservation periods configurable from {0, 1: 99, 100, 200, ..., 1000} ms. Assume that sl-ResourceReservePeriodList-r16 contains the group {0, P 1 ,P 2 ,…,P M}. For positioning at time For each resource at the selected Y resources, the UE shall Perform sensing in the resource to check the time Whether the resource at can be a candidate resource of the UE, where i=1,…,M.

[0061] For example, targeting time The first resource among the Y resources at time Sensing is performed in the resource. Full sensing is not required in these embodiments.

[0062] Figure 7 A method for wireless communication performed by a UE according to a preferred embodiment of the present disclosure is described.

[0063] In step 701, the UE selects multiple resources from a resource selection window, for example, Figure 4 In step 702, the UE determines a sensing window based on the selected resources, for example, Figure 5 In step 703, the UE determines the availability of multiple resources based on the sensing results in the sensing window.

[0064] exist Figure 4 In the embodiment, the sensing window includes a main sensing window and an additional sensing window. The UE may perform both partial sensing and full sensing in the two sensing windows. For example, the UE may perform partial sensing in the main sensing window and full sensing in the additional sensing window; perform full sensing in the main sensing window and perform partial sensing in the additional sensing window; perform full sensing in both sensing windows; or perform partial sensing in both sensing windows.

[0065] The additional sensing window is determined based on a set of resource reservation periods of the selected resource and resource pool. More specifically, the start time of the second sensing window is determined based on the resource selection trigger, i.e., based on Figure 4 The end time of the second sensing window is determined based on the start time of the plurality of selected resources, that is, based on Figure 4 The selected time slot The start time of the primary sensing window is determined based on the maximum value of a set of resource reservation periods, and the end time of the primary sensing window is determined based on the resource selection trigger. Figure 4 As shown in the figure, the additional sensing window ranges from nT proc,0 arrive

[0066] When Figure 4 If no resource reservation request is received in the additional sensing window depicted in FIG. 1 , the UE may deliver sensing in the additional sensing window. If there is a reservation period in a set of resource reservation periods with a value ranging from arrive The UE shall then perform sensing in the additional sensing window. The availability of the y selected resources is determined after the additional sensing window and before the plurality of resources, e.g. at time Time between.

[0067] The end time of the sensing window is determined based on the start time of the selected multiple resources. Figure 4 and 5 The two sensing windows in the End at Figure 5 The sensing window ranges from arrive

[0068] The UE may further receive a set of resource reservation periods, such as parameter: sl-ResourceReservePeriodList-r16, and determine the availability of multiple resources by sensing when a resource reservation request may be received in multiple time intervals derived based on the set of resource reservation periods. Figure 6 In the range from arrive Sensing is performed during the interval.

[0069] Figure 8 A block diagram illustrating a UE according to an embodiment of the present disclosure. The UE may include a receiving circuit system, a processor, and a transmitting circuit system. In one embodiment, the UE may include: a non-transitory computer-readable medium having computer-executable instructions stored thereon; a receiving circuit system; a transmitting circuit system; and a processor coupled to the non-transitory computer-readable medium, the receiving circuit system, and the transmitting circuit system. The computer-executable instructions may be programmed to implement a method (e.g., Figure 4 That is, the processor may: select a plurality of resources from a resource selection window; determine a sensing window based on the selected plurality of resources; and determine availability of the plurality of resources based on sensing results in the sensing window.

[0070] The methods of the present disclosure may be implemented on a programmed processor. However, the controller, flow charts, and modules may also be implemented on a general or special purpose computer, a programmed microprocessor or microcontroller and peripheral integrated circuit components, an integrated circuit, a hardware electronic or logic circuit such as a discrete component circuit, a programmable logic device, or the like. In general, any device having a finite state machine capable of implementing the flow charts shown in the figures may be used to implement the processing functions of the present disclosure.

[0071] Although the present disclosure has been described with specific embodiments of the present disclosure, it is apparent that many alternatives, modifications and variations will be apparent to those skilled in the art. For example, various components of the embodiments may be interchanged, added or replaced in other embodiments. In addition, all elements shown in each figure are not necessary for the operation of the disclosed embodiments. For example, a person skilled in the art of the disclosed embodiments will be able to make and use the teachings of the present disclosure by simply adopting the elements of the independent claims. Therefore, the embodiments of the present disclosure as set forth herein are intended to be illustrative, rather than restrictive. Various changes may be made without departing from the spirit and scope of the present disclosure.

[0072] In the present disclosure, relative terms such as "first", "second" and the like can be used alone to distinguish an entity or action from another entity or action, and do not necessarily require or imply any actual relationship or order between such entities or actions. The term "include", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements not only comprises the elements, but also may comprise other elements that are not clearly listed or inherent to the process, method, article or equipment. The element starting with "one", "one" or the like does not exclude the existence of additional identical elements in the process, method, article or equipment comprising the elements without more restrictions. In addition, the term "another" is defined as at least the second or more. The terms "include", "have" and the like as used herein are defined as "comprising".

Claims

1. A method for determining resource availability, the method comprising: include: Select multiple resources from the resource selection window; determining a sensing window based on the selected plurality of resources; and The availability of the multiple resources is determined based on the sensing results in the sensing window, wherein the sensing window includes a first sensing window and a second sensing window, wherein the second sensing window is determined based on a set of resource reservation periods of the selected multiple resources and resource pool, wherein the start time of the second sensing window is determined based on the resource selection trigger, and the end time of the second sensing window is determined based on the start time of the multiple selected resources, and wherein the second sensing window is used for full sensing or partial sensing. The method according to claim 1 , wherein the first sensing window is used for partial sensing. The method according to claim 1 , wherein the first sensing window is used for full sensing. 4 . The method according to claim 1 , wherein a start time of the first sensing window is determined based on a maximum value of the set of resource reservation periods, and an end time of the first sensing window is determined based on a resource selection trigger.

5. The method according to claim 1, wherein the second sensing window ranges from nT proc,0 arrive Where n represents the first time point when resource selection is triggered, Indicates the first time point at which the multiple resources start, T proc,0 represents a first time interval for processing information sensed in the first sensing window, and T 1 represents the second time interval, which is used to report the sensed information and process resource selection to a higher layer. 6 . The method of claim 1 , wherein if it is determined based on the set of resource reservation periods that no resource reservation request will be received in the second sensing window, sensing in the second sensing window can be omitted.

7. The method according to claim 1, wherein if the value of a resource reservation period in the set of resource reservation periods ranges from arrive Then the sensing in the second sensing window is not omitted, where n represents the first time point when the resource selection is triggered, Indicates the first time point at which the multiple resources start, T proc,0 represents a first time interval for processing the information sensed in the first sensing window, and T 1 represents a second time interval, which is used to report the sensed information and process resource selection to a higher layer, and The second time point represents the end of the plurality of resources.

8. The method of claim 2, wherein the availability of the plurality of resources is determined after the second sensing window and before the plurality of resources. 9 . The method of claim 1 , wherein an end time of the sensing window is determined based on a start time of the selected plurality of resources.

10. The method according to claim 9, wherein the sensing window ranges from arrive in Indicates the first time point at which the multiple resources start, T proc,0 represents a first time interval for processing the information sensed in the sensing window, T 1 represents the second time interval, which is used to report the sensed information and process resource selection to a higher layer, and T 0 Indicates the size of the sensing window.

11. The method according to claim 1, further comprising: include: Receive a set of resource reservation periods; and Availability of the plurality of resources is determined by sensing when a resource reservation request can be received in a plurality of time intervals derived based on the set of resource reservation periods.

12. A device for determining resource availability, wherein include: a non-transitory computer-readable medium having computer-executable instructions stored thereon; Receiving circuit system; Transmission circuit system; and a processor coupled to the non-transitory computer-readable medium, the receiving circuitry, and the transmitting circuitry, The computer executable instructions cause the processor to implement a method for determining resource availability, the method comprising: Select multiple resources from the resource selection window; determining a sensing window based on the selected plurality of resources; and The availability of the multiple resources is determined based on the sensing results in the sensing window, wherein the sensing window includes a first sensing window and a second sensing window, wherein the second sensing window is determined based on a set of resource reservation periods of the selected multiple resources and resource pool, wherein the start time of the second sensing window is determined based on the resource selection trigger, and the end time of the second sensing window is determined based on the start time of the multiple selected resources, and wherein the second sensing window is used for full sensing or partial sensing. The apparatus according to claim 12 , wherein the first sensing window is used for partial sensing. The apparatus of claim 12 , wherein the first sensing window is for full sensing.

15. The apparatus of claim 12, wherein an end time of the sensing window is determined based on a start time of the selected plurality of resources.

16. The apparatus of claim 12, wherein the method further comprises: include: Receive a set of resource reservation periods; and Availability of the plurality of resources is determined by sensing when a resource reservation request can be received in a plurality of time intervals derived based on the set of resource reservation periods.

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