CN116998171A

CN116998171A - User equipment for sensing operation of side link communication and operation method thereof

Info

Publication number: CN116998171A
Application number: CN202280022288.5A
Authority: CN
Inventors: 埃马德·N·法拉格
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2021-03-18
Filing date: 2022-03-18
Publication date: 2023-11-03

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. Methods and apparatus are provided for adaptive low power sensing operation for Side Link (SL) communications in a wireless communication system. A method of operating a User Equipment (UE) includes: operating with partial sensing; operating in a resource pool configured for partial sensing; and triggering SL resource selection in time slot n. The method also includes selecting Y candidate slots for SL resource selection, and performing Continuous Partial Sensing (CPS) in a sensing window. The first candidate slot of the selected Y candidate slots is a slot. The sensing window is in a consecutive time slot relative to the time slot within the resource pool.

Description

User equipment for sensing operation of side link communication and operation method thereof

Technical Field

The present disclosure relates generally to wireless communication systems, and more particularly, to adaptive low power sensing operation of a Side Link (SL) in a wireless communication system.

Background

The 5G mobile communication technology defines a wide frequency band, enables high transmission rates and new services, and can be implemented not only in a "sub 6GHz" frequency band such as 3.5GHz, but also in a "6GHz and above" frequency band called millimeter waves (including 28GHz and 39 GHz). Further, it has been considered to implement a 6G mobile communication technology (referred to as a super 5G system) in a terahertz frequency band (e.g., 95GHz to 3THz frequency band) in order to achieve a transmission rate five ten times faster than that of the 5G mobile communication technology and an ultra-low delay that is one tenth of that of the 5G mobile communication technology.

At the beginning of the development of 5G mobile communication technology, in order to support services and meet performance requirements related to enhanced mobile broadband (eMBB), ultra-reliable low latency communication (URLLC), and massive machine type communication (mMTC), standardization with respect to beamforming and massive MIMO has been ongoing in order to mitigate radio wave path loss in millimeter waves and increase radio wave transmission distances, thereby supporting parameter sets (e.g., operating a plurality of subcarrier intervals) for dynamic operation for effectively utilizing millimeter wave resources and slot formats, initial access techniques for supporting multi-beam transmission and broadband, definition and operation of BWP (bandwidth part), new channel coding methods (such as LDPC (low density parity check) codes for mass data transmission and polarization codes for highly reliable transmission of control information), L2 pre-processing, and network slicing for providing a dedicated network for a specific service.

Currently, in view of services supported by the 5G mobile communication technology, discussions are being made regarding improvement and performance improvement of the initial 5G mobile communication technology, and there have been physical layer standardization regarding technologies such as V2X (internet of vehicles) for assisted driving decision by autonomous vehicles based on information on the position and state of vehicles transmitted by the vehicles, NR-U (new radio unlicensed) aimed at system operation conforming to various regulatory-related requirements in unlicensed bands, NR UE energy saving, non-terrestrial network (NTN) as UE-satellite direct communication for providing coverage in an area where terrestrial network communication is unavailable, and positioning.

Furthermore, technologies in terms of air interface architecture/protocols are continuously standardized, such as industrial internet of things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (integrated access and backhaul) for providing nodes for network service area extension by supporting wireless backhaul links and access links in an integrated manner, mobility enhancements including conditional handover and DAPS (dual active protocol stack) handover, and two-step random access (2-step RACH for NR) for simplifying random access procedures. System architecture/services with respect to 5G baseline architecture (e.g., service-based architecture or service-based interface) are also being standardized for combining Network Function Virtualization (NFV) and Software Defined Network (SDN) technologies, and Mobile Edge Computing (MEC) for receiving UE location-based services.

With commercialization of the 5G mobile communication system, the connection device, which has been exponentially increased, will be connected to the communication network, and thus it is expected that enhancement of the functions and performances of the 5G mobile communication system and the integrated operation of the connection device will be required. For this reason, new researches related to augmented reality (XR) are planned in order to effectively support AR (augmented reality), VR (virtual reality), MR (mixed reality), etc., to improve 5G performance and reduce complexity by using Artificial Intelligence (AI) and Machine Learning (ML), AI service support, virtual reality service support, and unmanned aerial vehicle communication.

Furthermore, such development of the 5G mobile communication system will be fundamental for developing not only new waveforms for providing coverage in the terahertz band of the 6G mobile communication technology, but also multi-antenna transmission technologies such as full-dimensional MIMO (FD-MIMO), array antennas and large antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional spatial multiplexing technology using OAM (orbital angular momentum), and RIS (reconfigurable intelligent surface), but also full duplex technology for increasing frequency efficiency of the 6G mobile communication technology and improving system network, communication technology based on AI for realizing system optimization by utilizing satellites and AI (artificial intelligence) from the design stage and internalizing end-to-end AI support functions, and next generation distributed computing technology for implementing services at a complexity level exceeding the limit of UE operation capability by utilizing ultra-high-performance communication and computing resources.

With all technical activities worldwide for various candidate technologies from industry and academia, the momentum of 5 th generation (5G) or New Radio (NR) mobile communications is recently increasing. Candidate enablers for 5G/NR mobile communications include large-scale antenna technology, ranging from legacy cellular frequency bands to high frequencies, to provide beamforming gain and support increased capacity, new waveforms (e.g., new Radio Access Technology (RAT)) for flexibly adapting to various services/applications with different requirements, new multiple access schemes for supporting large-scale connections, and so forth.

Disclosure of Invention

Technical problem

The present disclosure relates to wireless communication systems, and more particularly, to adaptive low power sensing operation of SL in a wireless communication system.

Solution to the problem

In one embodiment, a User Equipment (UE) is provided. The UE includes a transceiver and a processor operatively coupled to the transceiver. The processor is configured to operate with partial sensing, operate in a resource pool configured for partial sensing, trigger SL resource selection in slot n, and select Y candidate slots for SL resource selection. The first candidate slot of the selected Y candidate slots is a slot. The processor is also configured to perform Continuous Portion Sensing (CPS) in a sensing window. The sensing window is in a consecutive time slot relative to the time slot within the resource pool.

In another embodiment, a method of operating a UE is provided. The method comprises the following steps: operating with partial sensing; operating in a resource pool configured for partial sensing; and triggering SL resource selection in time slot n. The method further includes selecting Y candidate slots for SL resource selection, and performing CPS in a sensing window. The first candidate slot of the selected Y candidate slots is a slot. The sensing window is in a consecutive time slot relative to the time slot within the resource pool.

Other technical features may be readily apparent to one skilled in the art from the following figures, descriptions, and claims.

Before proceeding with the following detailed description, it may be advantageous to set forth definitions of certain words and phrases used throughout this patent document. The term "couple" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not those elements are in physical contact with one another. The terms "transmit," "receive," and "communicate," and derivatives thereof, encompass both direct and indirect communication. The terms "include" and "comprise," as well as derivatives thereof, are intended to be inclusive and not limited to. The term "or" is inclusive, meaning and/or. The phrase "associated with … …" and its derivatives are intended to include, be included within … …, interconnect … …, include, be included within … …, be connected to … … or connected to … …, be coupled to … … or coupled to … …, be communicable with … …, cooperate with … …, interleave, be juxtaposed, be immediately adjacent to … …, be coupled to … … or combined with … …, have a characteristic of … …, have a relationship with … … or a relationship with … …, and the like. The term "controller" refers to any device, system, or portion thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and/or firmware. The functionality associated with any particular controller may be centralized or distributed, whether locally or remotely. The phrase "at least one of … …" when used with a list of items means that different combinations of one or more of the listed items can be used and that only one item in the list may be required. For example, "at least one of A, B and C" includes any one of the following combinations: A. b, C, A and B, A and C, B and C, and a and B and C.

Furthermore, the various functions described below may be implemented or supported by one or more computer programs, each of which is formed from computer readable program code and embodied in a computer readable medium. The terms "application" and "program" refer to one or more computer programs, software components, sets of instructions, procedures, functions, objects, classes, instances, related data, or a portion thereof adapted for implementation in a suitable computer readable program code. The phrase "computer readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer readable medium" includes any type of medium capable of being accessed by a computer, such as Read Only Memory (ROM), random Access Memory (RAM), a hard disk drive, a Compact Disc (CD), a Digital Video Disc (DVD), or any other type of memory. "non-transitory" computer-readable media exclude wired, wireless, optical, or other communication links that transmit transient electrical signals or other transient signals. Non-transitory computer readable media include media capable of permanently storing data, as well as media capable of storing data and subsequently rewriting data, such as a rewritable optical disk or an erasable memory device.

Definitions for certain other words and phrases are provided throughout this patent document. Those of ordinary skill in the art should understand that in many, if not most instances, such definitions apply to prior as well as future uses of such defined words and phrases.

Drawings

For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which like reference numbers indicate like parts throughout:

fig. 1 illustrates an example of a wireless network according to an embodiment of the present disclosure;

FIG. 2 illustrates an example of a gNB according to an embodiment of the present disclosure;

fig. 3 illustrates an example of a UE according to an embodiment of the present disclosure;

fig. 4 and 5 illustrate examples of wireless transmit and receive paths according to the present disclosure;

fig. 6 illustrates an example of a UE procedure for determining a type of sensing to perform and performing sensing and resource selection according to an embodiment of the present disclosure;

fig. 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, and 25 illustrate various examples of sequential partial sensing operations in accordance with various embodiments of the present disclosure;

Fig. 26 illustrates an example of a sensing window for a UE according to an embodiment of the present disclosure;

fig. 27 illustrates an example of a sensing window when a UE is triggered, according to an embodiment of the present disclosure;

fig. 28 illustrates another example of a sensing window when a UE is triggered in accordance with an embodiment of the present disclosure;

fig. 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49 and 50 illustrate various examples of sensing operations according to various embodiments of the present disclosure.

Detailed Description

The figures 1 through 50, discussed below, and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will appreciate that the principles of the present disclosure may be implemented in any suitably arranged system or device.

The following documents are hereby incorporated by reference into the present disclosure as if fully set forth herein: 3GPP TS 38.211v16.8.0, "NR; physical channel and modulation ";3GPP TS 38.212v16.8.0, "NR; multiplexing and channel coding ";3GPP TS 38.213v16.8.0, "NR; physical layer procedure for control ",3GPP TS 38.214v16.8.0", NR; physical layer program "for data; 3GPP TS 38.321v16.7.0, "NR; media Access Control (MAC) protocol specification "; and 3GPP TS 38.331v16.7.0, "NR; radio Resource Control (RRC) protocol specification "; and 3GPP TS 36.213v16.8.0, "evolved universal terrestrial radio access (E-UTRA); physical layer program).

Fig. 1-3 below describe various embodiments implemented in a wireless communication system and utilizing Orthogonal Frequency Division Multiplexing (OFDM) or Orthogonal Frequency Division Multiple Access (OFDMA) communication techniques. The descriptions of fig. 1-3 are not intended to imply physical or architectural limitations with respect to different embodiments may be implemented. The various embodiments of the present disclosure may be implemented in any suitably arranged communication system.

Fig. 1 illustrates an example wireless network according to an embodiment of this disclosure. The embodiment of the wireless network shown in fig. 1 is for illustration only. Other embodiments of wireless network 100 may be used without departing from the scope of this disclosure.

As shown in fig. 1, the wireless network includes a gNB 101 (e.g., base station, BS), a gNB 102, and a gNB 103.gNB 101 communicates with gNB 102 and gNB 103. The gNB 101 is also in communication with at least one network 130, such as the Internet, a proprietary Internet Protocol (IP) network, or other data network.

The gNB 102 provides wireless broadband access to the network 130 for a first plurality of User Equipment (UEs) within the coverage area 120 of the gNB 102. The first plurality of UEs includes: UE 111, which may be located in a small enterprise; UE 112, which may be located in enterprise (E); UE 113, which may be located in a WiFi Hotspot (HS); UE 114, which may be located in a first home (R); a UE 115, which may be located in a second home (R); and UE 116, which may be a mobile device (M), such as a cellular telephone, wireless laptop, wireless PDA, or the like. The gNB 103 provides wireless broadband access to the network 130 for a second plurality of UEs within the coverage area 125 of the gNB 103. The second plurality of UEs includes UE 115 and UE 116. In some embodiments, one or more of the gnbs 101-103 may communicate with each other and UEs 111-116 using 5G/NR, long Term Evolution (LTE), long term evolution-advanced (LTE-a), wiMAX, wiFi, or other wireless communication technology. In various embodiments, the UE 116 may communicate with another UE 115 via a Side Link (SL). For example, two UEs 115-116 may be within network coverage (of the same or different base stations). In another example, the UE 116 may be within network coverage and another UE may be outside of network coverage. In yet another example, both UEs are outside of network coverage. In one embodiment, small office base Station (SB) 111 may communicate with SB 111A, SB 111B and SB 111c through SL. SB 111A-111C may communicate with BS102 through SB 111. In yet another example, SB 111A-111C may communicate with another one of SB 111A-111C.

Depending on the network type, the term "base station" or "BS" may refer to any component (or collection of components) configured to provide wireless access to a network, such as a Transmission Point (TP), a transmission-reception point (TRP), an enhanced base station (eNodeB or eNB), a 5G/NR base station (gNB), a large base station, a femto base station, a WiFi Access Point (AP), or other wireless enabled device. The base station may provide wireless access according to one or more wireless communication protocols, e.g., 5G/NR 3GPPNR, long Term Evolution (LTE), LTE-advanced (LTE-a), high Speed Packet Access (HSPA), wi-Fi 802.11a/b/G/n/ac, etc. For convenience, the terms "BS" and "TRP" are used interchangeably in this patent document to refer to the network infrastructure component that provides wireless access to a remote terminal. In addition, the term "user equipment" or "UE" may refer to any component, such as a "mobile station", "subscriber station", "remote terminal", "wireless terminal", "reception point" or "user device", depending on the type of network. For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to a remote wireless device that is wireless to access the BS, whether the UE is a mobile device (such as a mobile phone or smart phone) or is generally considered to be a stationary device (such as a desktop computer or vending machine).

The dashed lines illustrate the general extent of coverage areas 120 and 125, which are shown as being generally circular for purposes of illustration and explanation only. It should be clearly understood that the coverage areas associated with the gnbs, such as coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on the configuration of the gnbs and the variations in the radio environment associated with the natural and man-made obstructions.

As described in more detail below, one or more of UEs 111-116 include circuitry, programming, or a combination thereof for adaptive low power sensing operation of a SL in a wireless communication system. In certain embodiments, and one or more of the gnbs 101-103 comprise circuitry, programming, or a combination thereof, for adaptive low power sensing operation of the SL in the wireless communication system.

Although fig. 1 illustrates one example of a wireless network, various changes may be made to fig. 1. For example, the wireless network may include any number of gnbs and any number of UEs in any suitable arrangement. In addition, the gNB 101 may communicate directly with any number of UEs and provide those UEs with wireless broadband access to the network 130. Similarly, the gnbs 102 to 103 may each communicate directly with the network 130 and provide the UE with direct wireless broadband access to the network 130. Furthermore, the gnbs 101, 102, and/or 103 may provide access to other or additional external networks (such as external telephone networks or other types of data networks).

Fig. 2 illustrates an example gNB102 in accordance with embodiments of the disclosure. The embodiment of the gNB102 shown in fig. 2 is for illustration purposes only, and the gnbs 101 and 103 of fig. 1 may have the same or similar configuration. However, the gNB has a wide variety of configurations, and fig. 2 does not limit the scope of the present disclosure to any particular implementation of the gNB.

As shown in fig. 2, the gNB102 includes a plurality of antennas 205a through 205n, a plurality of RF transceivers 210a through 210n, transmit (TX) processing circuitry 215, and Receive (RX) processing circuitry 220. The gNB102 also includes a controller/processor 225, memory 230, and a backhaul or network interface 235.

RF transceivers 210a through 210n receive incoming RF signals, such as signals transmitted by UEs in network 100, from antennas 205a through 205 n. The RF transceivers 210 a-210 n down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signal is sent to RX processing circuit 220, which generates a processed baseband signal by filtering, decoding, and/or digitizing the baseband or IF signal. The RX processing circuit 220 sends the processed baseband signals to a controller/processor 225 for further processing.

TX processing circuitry 215 receives analog or digital data (such as voice data, network data, email, or interactive video game data) from controller/processor 225. TX processing circuitry 215 encodes, multiplexes, and/or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 210a through 210n receive outgoing processed baseband or IF signals from TX processing circuitry 215 and up-convert the baseband or IF signals to RF signals for transmission via antennas 205a through 205 n.

The controller/processor 225 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, controller/processor 225 may control the reception of Downlink (DL) channel signals and the transmission of Uplink (UL) channel signals by RF transceivers 210a through 210n, RX processing circuit 220, and TX processing circuit 215 according to well-known principles. The controller/processor 225 may also support additional functions, such as higher-level wireless communication functions. For example, the controller/processor 225 may support beamforming or directional routing operations in which outgoing/incoming signals from/to the multiple antennas 205 a-205 n are weighted differently to effectively steer the outgoing signals to a desired direction. The controller/processor 225 may support any of a wide variety of other functions in the gNB 102.

The controller/processor 225 is also capable of executing programs and other processes residing in memory 230, such as an OS. Controller/processor 225 may move data into and out of memory 230 as needed to execute processes.

The controller/processor 225 is also coupled to a backhaul or network interface 235. Backhaul or network interface 235 allows the gNB102 to communicate with other devices or systems via a backhaul connection or via a network. The interface 235 may support communication over any suitable wired or wireless connection. For example, when the gNB102 is implemented as part of a cellular communication system (such as a 5G/NR, LTE, or LTE-a enabled cellular communication system), the interface 235 may allow the gNB102 to communicate with other gnbs over a wired or wireless backhaul connection. When the gNB102 is implemented as an access point, the interface 235 may allow the gNB102 to communicate over a wired or wireless local area network or over a wired or wireless connection with a larger network (such as the internet). Interface 235 includes any suitable structure that supports communication over a wired or wireless connection, such as an ethernet or RF transceiver.

Memory 230 is coupled to controller/processor 225. A portion of memory 230 may include RAM and another portion of memory 230 may include flash memory or other ROM.

While fig. 2 illustrates one example of the gNB 102, various changes may be made to fig. 2. For example, the gNB 102 may include any number of each of the components shown in FIG. 2. As a particular example, an access point may include multiple interfaces 235 and controller/processor 225 may support adaptive low power sensing operation for SL in a wireless communication system. Another particular example, while shown as including a single instance of TX processing circuitry 215 and a single instance of RX processing circuitry 220, the gNB 102 may include multiple instances of each (such as one instance per RF transceiver). In addition, the various components in FIG. 2 may be combined, further subdivided, or omitted, and additional components may be added according to particular needs.

Fig. 3 illustrates an example UE116 according to an embodiment of this disclosure. The embodiment of UE116 shown in fig. 3 is for illustration only, and UEs 111-115 of fig. 1 may have the same or similar configuration. However, the UE has a wide variety of configurations, and fig. 3 does not limit the scope of the present disclosure to any particular implementation of the UE.

As shown in fig. 3, UE 116 includes an antenna 305, a Radio Frequency (RF) transceiver 310, TX processing circuitry 315, a microphone 320, and Receive (RX) processing circuitry 325.UE 116 also includes speaker 330, processor 340, input/output (I/O) Interface (IF) 345, touch screen 350, display 355, and memory 360. Memory 360 includes an Operating System (OS) 361 and one or more application programs 362.

RF transceiver 310 receives an incoming RF signal from antenna 305 that is transmitted by the gNB of network 100 or by another UE on the SL. The RF transceiver 310 down-converts an incoming RF signal to generate an Intermediate Frequency (IF) or baseband signal. The IF or baseband signal is sent to RX processing circuit 325, which generates a processed baseband signal by filtering, decoding, and/or digitizing the baseband or IF signal. The RX processing circuit 325 transmits the processed baseband signal to a speaker 330 (such as for voice data) or to a processor 340 for further processing (such as for web-browsing data).

TX processing circuitry 315 receives analog or digital voice data from microphone 320 or other outgoing baseband data (such as network data, email, or interactive video game data) from processor 340. TX processing circuitry 315 encodes, multiplexes, and/or digitizes the outgoing baseband data to generate a processed baseband or IF signal. RF transceiver 310 receives outgoing processed baseband or IF signals from TX processing circuitry 315 and up-converts the baseband or IF signals to RF signals for transmission via antenna 305.

Processor 340 may include one or more processors or other processing devices and execute OS 361 stored in memory 360 to control the overall operation of UE 116. For example, processor 340 may control reception of DL signals or SL channels and signals and transmission of UL channel signals or SL channels and signals by RF transceiver 310, RX processing circuit 325, and TX processing circuit 315 according to well-known principles. In some embodiments, processor 340 includes at least one microprocessor or microcontroller.

Processor 340 is capable of executing other processes and programs residing in memory 360, such as processes for adaptive low power sensing operations for SL in a wireless communication system. Processor 340 may move data into and out of memory 360 as needed to execute processes. In some embodiments, the processor 340 is configured to execute the application 362 based on the OS 361 or in response to a signal received from the gNB or operator. The processor 340 is also coupled to an I/O interface 345 that provides the UE 116 with the ability to connect to other devices, such as laptop computers and handheld computers. I/O interface 345 is the communication path between these accessories and processor 340.

Processor 340 is also coupled to touch screen 350 and display 355. An operator of UE116 may use touch screen 350 to input data into UE 116. Display 355 may be a liquid crystal display, a light emitting diode display, or other display capable of presenting text and/or at least limited graphics, such as from a website.

Memory 360 is coupled to processor 340. A portion of memory 360 may include Random Access Memory (RAM) and another portion of memory 360 may include flash memory or other Read Only Memory (ROM).

Although fig. 3 illustrates one example of a UE116, various changes may be made to fig. 3. For example, the various components in FIG. 3 may be combined, further subdivided, or omitted, and additional components may be added according to particular needs. As a particular example, the processor 340 may be divided into multiple processors, such as one or more Central Processing Units (CPUs) and one or more Graphics Processing Units (GPUs). In addition, although fig. 3 illustrates the UE116 configured as a mobile phone or smart phone, the UE may be configured to operate as other types of mobile or stationary devices.

To meet the increasing demand for wireless data traffic since the deployment of 4G communication systems and to implement various vertical applications, 5G/NR communication systems have been deployed and are currently in deployment. A 5G/NR communication system is considered to be implemented in a higher frequency (millimeter wave) band (e.g., 28GHz or 60GHz band) in order to achieve higher data rates, or in a lower frequency band (such as 6 GHz) in order to achieve robust coverage and mobility support. In order to reduce propagation loss of radio waves and increase transmission distance, beamforming, massive Multiple Input Multiple Output (MIMO), omni-directional MIMO (FD-MIMO), array antennas, analog beamforming, large-scale antenna techniques are discussed in 5G/NR communication systems.

Further, in 5G/NR communication systems, development of system network improvement is being made based on advanced small base stations, cloud Radio Access Networks (RANs), super-dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, coordinated communication, coordinated multipoint (CoMP), receiving-end interference cancellation, and the like.

The discussion of the 5G system and the frequency bands associated therewith is for reference as certain embodiments of the present disclosure may be implemented in a 5G system. However, the present disclosure is not limited to 5G systems or frequency bands associated therewith, and embodiments of the present disclosure may be used in conjunction with any frequency band. For example, aspects of the present disclosure may also be applied to 5G communication systems, 6G or even higher versions of deployments that may use terahertz (THz) frequency bands.

A communication system includes a Downlink (DL) that refers to transmissions from a base station or one or more transmission points to a UE and an Uplink (UL) that refers to transmissions from a UE to a base station or to one or more reception points, and a Side Link (SL) that refers to transmissions from one or more UEs to one or more UEs.

The DL signals include data signals conveying information content, control signals conveying DL Control Information (DCI), and Reference Signals (RSs), also referred to as pilot signals. The gNB transmits data information or DCI through a corresponding Physical DL Shared Channel (PDSCH) or Physical DL Control Channel (PDCCH). PDSCH or PDCCH may be transmitted through a variable number of slot symbols including one slot symbol. For brevity, a DCI format that schedules PDSCH reception of a UE is referred to as a DL DCI format, and a DCI format that schedules Physical Uplink Shared Channel (PUSCH) transmission from the UE is referred to as a UL DCI format.

The gNB transmits one or more of multiple types of RSs, including channel state information RSs (CSI-RSs) and demodulation RSs (DMRSs). The CSI-RS is primarily intended for the UE to perform measurements and provide CSI to the gNB. For channel measurements, non-zero power CSI-RS (NZP CSI-RS) resources are used. For Interference Measurement Reporting (IMR), CSI interference measurement (CSI-IM) resources associated with a non-zero power CSI-RS (ZP CSI-RS) configuration are used. The CSI process comprises NZP CSI-RS and CSI-IM resources.

The UE may determine CSI-RS transmission parameters through DL control signaling or higher layer signaling from the gNB, such as Radio Resource Control (RRC) signaling. The transmit instance of the CSI-RS may be indicated by DL control signaling or configured by higher layer signaling. DM-RS is transmitted only in BW of the corresponding PDCCH or PDSCH, and the UE may demodulate data or control information using DMRS.

Fig. 4 and 5 illustrate example wireless transmit and receive paths according to this disclosure. In the following description, transmit path 400 may be described as being implemented in a gNB (such as gNB 102), while receive path 500 may be described as being implemented in a UE (such as UE 116). However, it is to be appreciated that the receive path 500 may be implemented in the gNB and the transmit path 400 may be implemented in the UE. It is also to be appreciated that receive path 500 may be implemented in a first UE and transmit path 400 may be implemented in a second UE to support SL communication. In some embodiments, receive path 500 is configured to support SL sensing in SL communications, as described in embodiments of the present disclosure.

The transmit path 400 as shown in fig. 4 includes a channel coding and modulation block 405, a serial-to-parallel (S-to-P) block 410, an Inverse Fast Fourier Transform (IFFT) block 415 of size N, a parallel-to-serial (P-to-S) block 420, an add cyclic prefix block 425, and an up-converter (UC) 430. The receive path 500 as shown in fig. 5 includes a down-converter (DC) 555, a remove cyclic prefix block 560, a serial-to-parallel (S-to-P) block 565, a size N Fast Fourier Transform (FFT) block 570, a parallel-to-serial (P-to-S) block 575, and a channel decoding and demodulation block 580.

As shown in fig. 4, a channel coding and modulation block 405 receives a set of information bits, applies coding, such as Low Density Parity Check (LDPC) coding, and modulates input bits, such as with Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM), to generate a sequence of frequency domain modulation symbols.

Serial-to-parallel block 410 converts (such as de-multiplexes) the serial modulated symbols into parallel data to generate N parallel symbol streams, where N is the IFFT/FFT size used in the gNB 102 and UE 116. The size N IFFT block 415 performs an IFFT operation on the N parallel symbol streams to generate a time domain output signal. The parallel-to-serial block 420 will convert (such as multiplex) the parallel time-domain output symbols from the size N IFFT block 415 to generate a serial time-domain signal. The add cyclic prefix block 425 inserts a cyclic prefix into the time domain signal. Up-converter 430 modulates (such as up-converts) the output of add cyclic prefix block 425 to an RF frequency for transmission via a wireless channel. The signal may also be filtered at baseband before conversion to RF frequency.

The RF signal transmitted from the gNB 102 reaches the UE 116 after traversing the wireless channel, and an operation inverse to the operation at the gNB 102 is performed at the UE 116. The RF signal transmitted from the first UE reaches the second UE after traversing the wireless channel, and an operation inverse to that at the first UE is performed at the second UE.

As shown in fig. 5, down-converter 555 down-converts the received signal to baseband frequency and remove cyclic prefix block 560 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial-to-parallel block 565 converts the time-domain baseband signal to a parallel time-domain signal. The size NFFT block 570 performs an FFT algorithm to generate N parallel frequency domain signals. Parallel-to-serial block 575 converts the parallel frequency domain signal into a sequence of modulated data symbols. Channel decoding and demodulation block 580 demodulates and decodes the modulated symbols to recover the original input data stream.

Each of the gnbs 101-103 may implement a transmit path 400 as illustrated in fig. 4 similar to that transmitted in the downlink to the UEs 111-116, and may implement a receive path 500 as illustrated in fig. 5 similar to that received in the uplink from the UEs 111-116. Similarly, each of UEs 111-116 may implement a transmit path 400 for transmitting to the gnbs 101-103 in the uplink and/or to another UE in the side link, and may implement a receive path 500 for receiving from the gnbs 101-103 in the downlink and/or from another UE in the side link.

Each of the components in fig. 4 and 5 may be implemented using hardware alone or using a combination of hardware and software/firmware. As a specific example, at least some of the components in fig. 4 and 5 may be implemented in software, while other components may be implemented in configurable hardware or a mixture of software and configurable hardware. For example, FFT block 570 and IFFT block 515 may be implemented as configurable software algorithms, wherein the value of size N may be modified depending on the implementation.

Furthermore, although described as using an FFT and an IFFT, this is by way of illustration only and should not be construed to limit the scope of the present disclosure. Other types of transforms may be used, such as Discrete Fourier Transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions. It will be appreciated that the value of variable N may be any integer (such as 1, 2, 3, 4, etc.) for DFT and IDFT functions, while the value of variable N may be any integer (such as 1, 2, 4, 8, 16, etc.) that is a power of two for FFT and IFFT functions.

Although fig. 4 and 5 illustrate examples of wireless transmit and receive paths, various changes may be made to fig. 4 and 5. For example, the various components in fig. 4 and 5 may be combined, further subdivided, or omitted, and additional components may be added according to particular needs. In addition, fig. 4 and 5 are intended to illustrate examples of the types of transmit and receive paths that may be used in a wireless network. Any other suitable architecture may be used to support wireless communications in a wireless network.

The time unit on the cell for DL signaling, for UL signaling or for SL signaling is one symbol. The symbols belong to a slot that includes a plurality of symbols, such as 14 symbols. Time slots may also be used as time units. The Bandwidth (BW) unit is referred to as a Resource Block (RB). One RB includes a plurality of Subcarriers (SCs). For example, a slot may have a duration of one millisecond and an RB may have a bandwidth of 180kHz and include 12 SCs with SC spacing of 15kHz. As another example, a slot may have a duration of 0.25 milliseconds and include 14 symbols, and an RB may have a BW of 720kHz and include 12 SCs, with SC spacing of 60kHz. RBs in one symbol of a slot are called Physical RBs (PRBs) and include a plurality of Resource Elements (REs). The slots may be full DL slots or full UL slots, or hybrid slots similar to special subframes in a Time Division Duplex (TDD) system. In addition, the slot may have symbols for SL communication. The UE may be configured with one or more bandwidth parts (BWP) of the system BW for transmitting or receiving signals or channels.

SL signals and channels are transmitted and received on subchannels in a resource pool, where a resource pool is a set of time-frequency resources used for SL transmission and reception in SL BWP. SL channels include a Physical SL Shared Channel (PSSCH) that conveys data information, a Physical SL Control Channel (PSCCH) that conveys SL Control Information (SCI) to schedule transmission/reception of the PSSCH, a Physical SL Feedback Channel (PSFCH) that conveys hybrid automatic repeat request acknowledgement (HARQ-ACK) information in response to correct (ACK value) or incorrect (NACK value) transport block reception in the corresponding PSSCH, and a Physical SL Broadcast Channel (PSBCH) that conveys system to aid in SL synchronization.

The SL signals include demodulation reference signals DM-RS multiplexed in PSSCH or PSCCH transmission to aid in data or SCI demodulation, channel state information reference signals (CSI-RS) for channel measurement, phase tracking reference signals (PT-RS) for tracking carrier phase, and SL primary synchronization signals (S-PSS) and SL secondary synchronization signals (S-SSS) for SL synchronization. The SCI may comprise two parts/phases corresponding to two respective SCI formats, wherein, for example, a first SCI format is multiplexed on the PSCCH and a second SCI format is multiplexed together with the SL data on the PSSCH, which is transmitted in the physical resources indicated by the first SCI format.

The SL channel may operate in different transmission modes. In unicast mode, the PSCCH/PSSCH conveys SL information from one UE to only another UE. In multicast mode, the PSCCH/PSSCH conveys SL information from one UE to a group of UEs within a (pre) configured group. In broadcast mode, PSCCH/PSCCH conveys SL information from one UE to all surrounding UEs. In NR release 16, there are two resource allocation patterns for PSCCH/PSSCH transmissions. In resource allocation mode 1, the gNB schedules UEs on SL and passes scheduling information to UEs transmitting on SL through DCI formats transmitted from the gNB on DL. In resource allocation mode 2, the UE schedules SL transmissions. SL transmissions may operate within network coverage with each UE within communication range of the gNB, outside of network coverage (where all UEs do not communicate with any gNB), or with partial network coverage with only some UEs within communication range of the gNB.

In case of multicast PSCCH/psch transmission, the UE may be (pre) configured with one of two options for reporting HARQ-ACK information by the UE: (i) HARQ-ACK reporting option (1): for example, if the UE detects the SCI format of the scheduled TB reception through the corresponding PSSCH reception, the UE may attempt to decode a Transport Block (TB) in the PSSCH reception. If the UE fails to decode the TB correctly, the UE multiplexes a Negative Acknowledgement (NACK) in the PSFCH transmission. In this option, the UE does not transmit a PSFCH with a positive Acknowledgement (ACK) when the UE decodes the TB correctly; and (ii) HARQ-ACK reporting option (2): for example, if the UE detects the SCI format of the PSSCH to which the scheduling corresponds, the UE may attempt to decode the TB. If the UE decodes the TB correctly, the UE multiplexes the ACK in the PSFCH transmission; otherwise, if the UE did not decode the TB correctly, the UE multiplexes the NACK in the PSFCH transmission.

In HARQ-ACK reporting option (1), when a UE transmitting a PSSCH detects a NACK in PSFCH reception, the UE may transmit another PSSCH with a TB (retransmission of the TB). In HARQ-ACK reporting option (2), when a UE transmitting a PSSCH does not detect an ACK in PSFCH reception, such as when the UE detects a NACK or does not detect PSFCH reception, the UE may transmit another PSSCH with a TB.

The side link resource pool includes a set of/pool slots and a set of/pool RBs for side link transmission and side link reception. A group of time slots that may belong to a side chain resource pool may be defined byAnd (3) representing. A group of time slots belonging to the resource pool may be defined by +.>Representing and may be configured, for example, using at least a bitmap. Wherein T' _MAX Is the number of SL slots in the resource pool. Every time slot in side link resource pool +.>In the frequency domain for side link transmission, N exists _subCH A number of consecutive sub-channels, N _subCH Provided by high-level parameters. Subchannel m (where m is between 0 and N _subCH -1) between them is formed by a group of n _subCHsize The PRBs give, n _PRB ＝n _subCHstart +m·n _subCHsize +j, where j=0, 1, … …, n _subCHsize -1，n _subCHstart And n _subCHsize Given by high-level parameters.

The time slots of the SL resource pool are determined as the following example.

In one example, a set of time slots that may belong to a resource is defined byRepresentation of whereinAnd 0.ltoreq.i<T _max μ is a subcarrier spacing configuration, μ=0 for a subcarrier spacing of 15 kHz; μ=1 for a subcarrier spacing of 30 kHz; μ=2 for a subcarrier spacing of 60 kHz; for a subcarrier spacing of 120kHz, μ=8. The slot index is relative to slot #0 or DFN #0 of SFN #0 of the serving cell. The set of time slots includes all time slots except for: (1) N configured for SL SS/PBCH blocks (S-SSB) _S-SSB A time slot; (2) Wherein at least one SL symbol is not configured non-semi-statically as N of UL symbols by the higher layer parameters TDD-UL-DL-configuration Common or SL-TDD-configuration uuon _nonSL And each time slot. In the SL time slot, Y, Y+1 andthe (Y+X-1) th OFDM symbol is a SL symbol, where Y is determined by the higher layer parameter SL-StartSymbol, and X is determined by the higher layer parameter SL-LengthSymbols; (3) N _{Reservation of} The reserved slots. Determining reserved time slots such that group->Is a bitmap length (L _{Bitmap image} ) Multiple of (2), wherein bitmap->Configured by higher layers. The reserved time slots are determined as follows: (i) Let->To be in the range of 0 … … 2 ^μ A set of slots within x 10240-1, but excluding S-SSB slots and non-SL slots. The time slots are arranged in ascending order of time slot indexes; (ii) the number of reserved slots is given by: n (N) _{Reservation of} ＝(2 ^μ ×10240-N _S-SSB -N _nonSL )modL _{Bitmap image} The method comprises the steps of carrying out a first treatment on the surface of the And (iii) the reserved time slot is given by: />Wherein m=0, 1, … …, N _{Reservation of} -1。T _max Given by the formula: t (T) _max ＝2 ^μ ×10240-N _S-SSB -N _nonSL -N _{Reservation of} 。

In another example, the time slots are arranged in an ascending order of time slot index.

In yet another example, a set of time slots belonging to the SL resource poolIs determined as follows: (1) No resource pool has a length of L _{Bitmap image} Corresponding bitmap of +.>(2) If it isTime slot- >Belonging to a resource pool; and (3) the remaining time slots are from 0, 1, … …, T' _max -1 starts indexing continuously. Wherein T' _max Is the number of remaining time slots in the group.

The slots may be numbered (indexed) as physical slots or logical slots, where the physical slots include all sequentially numbered slots, while the logical slots include only slots of side link resource pools sequentially numbered as described above. From physical duration P in milliseconds _rsvp To logical time slot P' _rsvp Is converted byGiven.

For resource (re) selection or re-evaluation in time slot n, the UE may determine that it is available in the resource selection window [ n+t ] ₁ ，n+T ₂ ]A set of single-slot resources for transmission within such that the single-slot resources for transmission R _x,y Is defined as a group L _subCH Successive subchannels x+i, where in time slotsI=0, 1, … …, L _subCH -1。T ₁ Determined by the UE such thatWherein->Is the PSSCH processing time, e.g., as defined in REF 4. For example, a->Is the resource selection processing time in table 3. T (T) ₂ Determined by the UE such that as long as T _2min <Residual packet delay budget, T _2min ≤T ₂ Less than or equal to the residual packet delay budget, otherwise T ₂ Equal toRemaining packet delay budget. T (T) _2min Configured by higher layers and depending on the priority of the SL transmissions.

Resource (re) selection is a two-step process: (1) The first step (e.g., performed in the physical layer) is to identify and determine candidate resources within a resource selection window. Candidate resources are resources belonging to a resource pool but exclude resources previously reserved or potentially reserved by other UEs (e.g., resource exclusion). The excluded resources are based on SCI of SLRSRP decoded in the sensing window and the UE measured an exceeding threshold. The threshold depends on the priority indicated in the SCI format and on the priority of the SL transmissions. Thus, sensing within the sensing window involves decoding the first stage SCI and measuring the corresponding SL RSRP, which may be based on PSCCH DMRS or PSSCHDMRS. Sensing is performed on slots where the UE does not transmit SL. The excluded resources are based on reserved or semi-persistent transmissions that may collide with any reserved or semi-persistent transmissions; candidate resources identified (determined) after providing (reporting) resource exclusion to higher layers; and (2) a second step (e.g., performed in a higher layer) of selecting or reselecting resources from the identified (determined) candidate resources for PSSCH/PSCCH transmission.

During the first step of the resource (re) selection procedure, the UE may be in a sensing window Wherein the UE monitors time slots belonging to the corresponding side link TX resource pool that are not used for UE's own transmissions. For example, the number of the cells to be processed,is the sensing processing delay time. To determine a set of candidate single-slot resources to report to a higher layer, the UE excludes (e.g., resource excludes) from a set of available single-slot resources for SL transmission within the TX resource pool and within the resource selection window: single time slot resource R _x,y So that the sense of having the SCI format 1-A hypothetically receivedAny time slot not monitored in the measurement window +.>Wherein the "resource reservation period" is set to any periodicity value allowed by the higher layer parameter sl-resource reservation periodic list and indicates all sub-channels of the resource pool in this time slot, the following condition 2.2 is fulfilled.

To determine a set of candidate single-slot resources to report to the higher layer, the UE excludes the following from a set of available single-slot resources available for SL transmission within the TX resource pool and within the resource selection window: single time slot resource R _x,y Such that for any SCI received within the sensing window: (1) The associated L1-RSRP measurement is above a (pre) configured SL-RSRP threshold, wherein the SL-RSRP threshold depends on the priority indicated in the received SCI and the priority of the SL transmission for which the resource is selected; (2) (condition 2.2) in time slot Is to be added (or if there is a "resource reservation field" in the received SCI, it is assumed that in slot +.>The same SCI) indication and +.>An overlapping set of resource blocks, wherein: (i) q=1, 2, … …, Q (where if P _{rsvp_RX} ≤T _scal And n' -m<P' _{rsvp_Rx} →/>T _scal T is in milliseconds ₂ The method comprises the steps of carrying out a first treatment on the surface of the Otherwise q=1, if n belongs to +>n '=n, otherwise n' is in the category of the setThe first slot after slot n); (ii) j=0, 1, … …, C _resel -1；(iii)P _{rsvp_RX} Is the resource reservation field indicated in the SCI received in the physical slot, and P' _{rsvp_Rx} Is the value converted to a logical slot; and (iv) P' _{rsvp_Tx} Is the resource reservation period of the SL transmission where resources are reserved in logical slots; and (3) if the candidate resource is less than a (pre) configured percentage of the total available resources within the resource selection window, such as 20%, the (pre) configured SL-RSRP threshold is increased by a predetermined amount, such as 3dB.

NR SL introduces two new procedures for mode 2 resource allocation: re-evaluation and preemption.

When the UE checks the availability of pre-selected SL resources before signaling the resources in SCI format, and if a new SL resource needs to be re-selected, a re-evaluation check is made. For the first time a pre-selected resource is signaled in slot m, the UE is at least in slot m-T ₃ Performs a reevaluation check in whichAs defined in TS 38.214 clause 8.1.4. T (T) ₃ Is a resource selection processing time for re-evaluation check, which is equal to the resource selection processing time +.>The reevaluation check includes: (1) The first step of performing the SL resource selection procedure, as determined in the 3GPP standard specification (i.e., clause 8.1.4 of TS 38.214), involves identifying (determining) a set of candidate (available) side chain resources in a resource selection window, as previously described; (3) If a preselected resource is available in the candidate set of side link resources, the resource is used/signaled for side link transmission; and (4) if no pre-selected resources are available in the candidate set of side link resources, re-selecting new side link resources from the candidate set of side link resources.

When the UE checks that it has been previously signaled and is protected in SCI formatWhen the availability of the reserved pre-selected SL resources, and if a new SL resource needs to be reselected, a preemption check is performed. For the pre-selected and reserved resources to be signaled in slot m, the UE is at least in slot m-T ₃ Performs preemption checks in whichAs defined in TS 38.214 clause 8.1.4. T (T) ₃ Is a resource selection processing time for preemption check, which is equal to the resource selection processing time +.>

The preemption check includes: (1) The first step of performing the SL resource selection procedure, as determined in the 3GPP standard specification (i.e., clause 8.1.4 of TS 38.214), involves identifying (determining) a set of candidate (available) side chain resources in a resource selection window, as previously described; (2) If a pre-selected and reserved resource is available in the candidate side link resource set, then the resource is used/signaled for side link transmission; (3) Otherwise, the pre-selected and reserved resources are not available in the candidate side link resource set. Due to and priority value P _RX The associated SCI has an RSRP that exceeds a threshold value and excludes the resource from the candidate set of resources. Let the priority value of SL resource for preemption check be P _TX : (i) If the priority value P _RX Less than the threshold of the higher layer configuration and priority value P _RX Less than priority value P _TX Pre-selected and reserved SL resources are preempted. New SL resources are re-selected from the candidate set of SL resources. It should be noted that lower priority values indicate higher priority traffic; and (ii) otherwise, use/signal the resource for SL transmission.

As mentioned above, the monitoring procedure for resource (re) selection during the sensing window requires receiving and decoding the SCI format during the sensing window, and measuring the SL RSRP. This receiving and decoding process and measuring SL RSRP increases the processing complexity and power consumption of the UE for SL communication.

The 3GPP release 16 is the first NR release comprising SL by the work item "5 g V2X with NR SL", which is a mechanism introduced mainly focused on the internet of vehicles (V2X) and can be used for public safety when service requirements can be met. Release 17 extends SL support to more use cases through the work item "NR side link enhancement". One of the motivations for SL enhancement in release 17 is power saving.

The power saving enables UEs with battery constraints to perform side chain operations in a power efficient manner. The Rel-16 NR side link is designed based on the assumption that it is "always on" when the UE is operating on a side link, e.g., focusing only on UEs installed in vehicles with sufficient battery capacity. In the V2X use case, vulnerable Road Users (VRUs) require a power saving solution in Rel-17, and in public safety and business use cases, UEs require these solutions, where power consumption in the UE needs to be minimized.

One of the purposes of issuing 17SL incremental work items is to specify resource allocation enhancements that reduce power consumption, thereby using the principle of issuing 14LTE side-link random resource selection and partial sensing as a baseline with potential enhancements. For resource allocation enhancement, the resource allocation is specified to reduce the power consumption of the UE: (1) The baseline is to introduce Rel-14 LTE side link random resource selection and partial sensing into Rel-16 NR side link resource allocation mode 2; and (2) for cases where the baseline does not work properly, using Rel-14 as the baseline does not prevent the introduction of new solutions to reduce power consumption.

Another motivation for side link enhancement in release 17 is to enhance reliability and reduce latency: allowing the URLLC type side link use cases to be supported in a wider operating scenario. The system level reliability and latency performance of the side link is affected by communication conditions such as radio channel conditions and supplied load, and in some cases, for example, when the channel is relatively busy, the Rel-16 NR side link is expected to be limited in achieving high reliability and low latency. Solutions that can enhance reliability and reduce latency are needed to keep providing use cases requiring low latency and high reliability under such communication conditions.

Another object of issuing 17 side-link enhancement work items is to investigate the enhanced feasibility and benefits of resource allocation pattern 2, where a set of resources is determined at UE-a and sent to UE-B, and UE-B considers the set when making its own transmissions. As discussed in the 3GPP standard procedure, a set of resources is determined at UE-a for inter-UE coordination. The group is sent to UE-B in mode 2 and UE-B considers this in the resource selection of its own transmissions.

In order to alleviate the problems associated with sensing, various schemes have been provided, for example, random resource selection (e.g., no sensing) and partial sensing have been considered in LTE for SL transmission and are being considered in NR. In the case of random resource selection, the UE randomly selects resources for SL transmission within the total available resources of the TX resource pool within the resource selection window without performing sensing. In the case of partial sensing, the UE may sense some side link slots. The partial sensing may be Periodic Based Partial Sensing (PBPS), in which the sensed time slots occur at fixed periodic intervals. Alternatively, the partial sensing may be Continuous Partial Sensing (CPS), wherein the time slots are continuously sensed for a short time window prior to resource selection/reselection for initial SL transmission or for a reevaluation check or preemption check.

In the present disclosure, the design of a sensing window for initial resource selection/reselection and successive partial sensing of reevaluation checks and preemption checks is considered. It is also contemplated to determine the sensing type and sensing window and the time slots for selecting candidate SL resources based on TX resource pool configuration (e.g., with or without periodic reservation), traffic type (periodic or aperiodic) and (pre) configuration. In the case of partial sensing, the Channel Busy Rate (CBR) is also considered.

The 3GPP release 16 is the first NR release comprising a side link by the work item "5 g V2X with NR side link", which is a mechanism introduced mainly focused on the internet of vehicles (V2X) and can be used for public safety when service requirements can be met. Release 17 extends the side link support to more use cases through the work item "NR side link enhancement".

One of the motivations for side link enhancement in release 17 is power saving. One of the objectives of issuing 17-side link enhancement work items is to introduce the principle of Rel-14 LTE-side link random resource selection (e.g., no sensing). The low power sensing may be based on partial sensing or no sensing (for random resource selection). The partial sensing may be Periodic Based Partial Sensing (PBPS) and/or Continuous Partial Sensing (CPS). It is to be appreciated that the SL mode 2TX resource pool can be (pre) configured to enable full sensing only, partial sensing only, random resource selection only, or a combination thereof. The configuration of the sensing window for partial sensing depends on how long the UE can know in advance that the SL transmission (resource selection/reselection procedure) for starting partial sensing triggers to start, and the perception of a sufficient period of time before resource selection/reselection and candidate resource determination/reporting to higher layers.

In the present disclosure, the design of successive partial sensing windows for initial resource selection/reselection and re-evaluation checks and preemption checks is considered, and the sensing mode and sensing window are determined based on TX resource pool type (e.g., whether periodic resource reservation is supported) and traffic type (e.g., periodic or aperiodic traffic).

The present disclosure relates to 5G/NR communication systems.

The present disclosure contemplates the design of successive partial sensing windows for initial resource selection/reselection, re-evaluation checking and preemption checking.

The present disclosure also contemplates determining the sensing mode and the sensing window based on the TX resource pool type (e.g., whether periodic resource reservation is supported) and the traffic type (e.g., periodic or aperiodic traffic).

The present disclosure relates to 5G/NR communication systems.

The present disclosure introduces signaling and methods for: (1) In the case of partial sensing, determining a sensing window and time slot for selecting candidate SL resources for aperiodic SL transmission; and (2) SL Channel Busy Rate (CBR) determination and validity in the case of partial sensing.

In the present disclosure, the UE is (pre) configured to operate one or more sensing modes.

In one embodiment, the UE senses time slots with periodicity to determine available candidate resources for SL resource selection within a SL TX resource pool within a resource selection window.

In another embodiment, the UE performs sensing in a short contiguous window to determine available candidate resources within a SL TX resource pool within a resource selection window that are available for SL resource selection.

In yet another embodiment, the UE both senses time slots having periodicity and performs the sensing in a short continuous window to determine available candidate resources for SL resource selection within a SL TX resource pool within the resource selection window.

In yet another embodiment, the UE does not perform sensing (e.g., random resource selection), and SL resources within the SL TX resource pool of the resource selection window are available for SL resource selection.

In yet another embodiment, the UE performs full sensing following the NR release 16SL sensing procedure as described in TS 38.214 to determine available candidate resources within the SL TX resource pool within the resource selection window that are available for SL resource selection.

Fig. 6 illustrates an example of a UE procedure 600 for determining a type of sensing to perform and performing sensing and resource selection in accordance with an embodiment of the present disclosure. The UE procedure 600 may be performed by a UE (e.g., 111-116 as illustrated in fig. 1). The embodiment of the UE procedure 600 shown in fig. 6 is for illustration only. One or more of the components shown in fig. 6 may be implemented in dedicated circuitry configured to perform the functions, or one or more of the components may be implemented by one or more processors that execute instructions to perform the functions.

As illustrated in fig. 6, in step 601, the UE may be (pre) configured with a pool of resources and have one or more sensing modes (e.g., full sensing, partial sensing, and/or random resource selection) and configuration parameters associated with each sensing mode. The UE may also be (pre) configured with other parameters related to the SL traffic that the UE expects to handle.

For example, the resource pool may be configured to allow or disallow periodic reservations. In the present disclosure, a resource pool with periodic reservation is a resource pool that can reserve an initial transmission of a transport block by SCI associated with a different transport block, e.g., a resource pool with periodic reservation can support a higher layer parameter sl-multiReserve resource. The resource pool may be configured with one or more periodic reservation periods given by the higher layer parameter sl-resource reservation period list.

One or more sensing modes may be (pre) configured by higher layers together with the conditions under which each sensing mode is used. In the present disclosure, for a UE operating in a power save mode, sensing may be performed (or not performed) based at least in part on one of: (1) Periodic partial sensing (PBPS) based, wherein sensing is performed repeatedly at periodic intervals; (2) Successive partial sensing, wherein sensing is a single aperiodic sensing performed within successive (within a transmit resource pool) short windows of time slots; and (3) random resource selection, wherein identifying candidate resources is performed without sensing.

Additional parameters may also be (pre) configured for each sensing mode, as described in the present disclosure.

In step 602, based on embodiments of the present disclosure, the UE may determine a sensing type or a sensing mode. The determination may be based on the type of periodicity (periodic or aperiodic) supported by the resource pool, and/or the type of SL traffic (periodic or periodic) and/or higher layer (pre) configuration.

In step 603, the UE may perform sensing based on the determination in step 402.

In step 604, the UE may determine candidate resources due to partial sensing (or no sensing) in step 603 and perform SL resource selection within the candidate resources.

In the following example, the time may be represented as one of the following: (1) logical time slots within a resource pool: (i) The logical slot index of a slot within a resource pool is denoted asAnd (ii) the period of time expressed in logical time slots within the resource pool is denoted as T'; (2) logical time slots in the resource pool. These are prior to application of the resource pool bitmapAs described in TS 38.214: (i) The logical slot index of a slot that can be in the resource pool is denoted +.>The method comprises the steps of carrying out a first treatment on the surface of the And (ii) the period of time that can be expressed in a logical time slot in the resource pool is denoted as T'. Although this is the same representation as for logical time slots within the resource pool, the values are different and it should be clear from the context which value is used; and (3) physical time slots or physical time: (i) The physical slot number (or index) is denoted as n or n'. n is the physical slot number of any physical slot and n' is the physical slot number of a slot in the resource pool; and (ii) the time period is expressed as a physical time (e.g., in milliseconds (ms)) or in physical time slots.

When used in the same equation, the time units should be the same, i.e.: (1) If logical time slots within a resource pool are used in an equation, inequality, or expression, the period in the same equation, inequality, or expression should be expressed in units of logical time slots within the resource pool; (2) If logical time slots that can be in a resource pool are used in an equation, inequality, or expression, the time period in the same equation, inequality, or expression should be expressed in units of logical time slots that can be in a resource pool; and (3) if physical time slots are used in an equation, inequality, or expression, the time periods in the same equation, inequality, or expression should be expressed in units of physical time slots or physical time scaled by the time slot duration.

The time units may be converted from one unit to another: (1) For example, for each logical slot index of a slot within a resource pool, there is a corresponding physical slot number. The opposite is not true, i.e., not every physical slot corresponds to a logical slot in the resource pool. When converting from physical slot numbers to logical slot indexes: (i) If the physical time slot is in the resource pool, determining a corresponding logical time slot index in the resource pool; and (ii) if the physical time slot is not in the resource pool, determining an index of an adjacent logical time slot within the resource pool, wherein one of: (a) Adjacent logical time slots Is the next logical slot after the physical slot; or (b) the adjacent logical slot is the previous logical slot preceding the physical slot; and (2) converting from physical time (in ms) to time in logical time slots within the resource pool, the following equation can be used, where T is in ms and T' is in logical time slots within the resource pool:wherein T' _max Is the number of logical slots within a 1024 frame or 10240ms resource pool.

The slot index or time period provided by a higher layer or specified in the specification may be given in one unit (e.g., in physical slots or in ms) and converted to a logical slot unit within a logical slot index or resource pool before being used in the corresponding equation or vice versa.

As described in U.S. patent application No. 17/653,105, filed on 3/1 at 2022, incorporated herein by reference, for UEs that are (pre) configured with periodic-based partial sensing and triggered to perform resource selection/reselection in slot n: (1) Determining and/or configuring a resource selection window [ n+T ] ₁ ，n+T ₂ ]The method comprises the steps of carrying out a first treatment on the surface of the (2) Y candidate time slots within the resource selection window are determined and/or configured. Wherein the candidate SL resource selection resource is in Y candidate time slots; (3) Determining and/or configuring one or more periodicity P' _i . Wherein the candidate time slotsIs +.>Wherein P' _i Can be P' _{Reservation of} I.e. one or more of the resource reservation periods of the resource pool. By physical time to logical slot conversion as described previously, P 'in logical slots in the resource pool' _{Reservation of} Corresponding to P in physical time _{Reservation of} The method comprises the steps of carrying out a first treatment on the surface of the And (4) determining and/or configuring for periodic P' _i Is a periodic sensing occasion k _i . In one ofIn the example, k _i May be the same across all periodicities, i.e., denoted by k. In another example, k _i May depend on candidate time slots +.>In the present disclosure, Y candidate slots are represented as logical slots within the resource pool, e.g., for the first of the Y candidate slots +.>Or +.>Etc. However, it should be appreciated that the candidate slots may also be logical slots that may be in the resource pool and are denoted +_ for the first candidate slot of the Y candidate slots>Or +.>

Fig. 7 illustrates an example of a continuous portion sensing operation 700 according to an embodiment of the disclosure. The embodiment of the continuous portion sensing operation 700 shown in fig. 7 is for illustration only.

Fig. 7 illustrates periodic based partial sensing: (i) Resource selection/reselection is triggered by higher layers in slot n; (2) Resource selection window at T ₁ And T is ₂ Extending therebetween, i.e. [ T ] ₁ ，T ₂ ]The method comprises the steps of carrying out a first treatment on the surface of the (3) there are Y candidate slots in the resource selection window; (4) The sensing period is P ₁ Which may be equal to P _{Reservation of} The method comprises the steps of carrying out a first treatment on the surface of the And (5) the periodic sensing occasions are k=1 and k=2.

For continuous portion sensing, at least one of the examples of table 1 for continuous portion sensing may be applied when a trigger condition for SL transmission (resource selection/reselection) occurs in slot n. These are described in more detail below. In table 1, the sensing window refers to a continuous portion sensing window.

When the UE performs periodic based partial sensing and continuous partial sensing, the UE uses the same resource selection window and a set of the same Y candidate slots within the resource selection window for periodic based partial sensing and continuous partial sensing. The set of Y candidate slots is determined by the implementation of the UE. The candidate slot is a slot in which the UE can select a resource for SL transmission based on the sensing result.

When the UE performs only successive partial sensing: (1) The UE may consider all slots within the resource selection window to be available as candidate slots; (2) The UE may select a set of Y candidate slots within the resource selection window. The set of Y candidate slots is determined by the implementation of the UE; (3) The UE may select a set of Y candidate slots within the resource selection window. The first candidate slot is the first slot of a resource selection window (within the resource pool). The remaining Y candidate slots are determined by the implementation of the UE; (4) The UE may select a set of Y candidate slots within the resource selection window. The Y candidate time slots are continuous in the resource pool, and the implementation mode of the UE determines the first candidate time slot in the Y candidate time slots and the number of the Y candidate time slots; and/or (5) the UE may select a set of Y candidate slots within the resource selection window. The Y candidate slots are contiguous in the resource pool. The first candidate slot is the first slot of a resource selection window (within the resource pool). The UE implementation determines the number of Y candidate slots. Table 1 shows a continuous portion sensing example.

TABLE 1

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In one example 0.1, the continuous portion sensing occurs before slot n.

Fig. 8 illustrates another example of a continuous portion sensing operation 800 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 800 shown in fig. 8 is for illustration only.

In one example 0.1.1, as illustrated in fig. 8, the continuous portion sensing starts in time slot a, where a = n-T ₀ And in time slot n-T _B Ending before, i.e. the consecutive partial sensing window is in the range [ n-T ] ₀ ，n-T _B ) And (3) inner part. Alternatively, successive partial sensing starts in time slot a, where a=n-T ₀ And in time slot n-T _B Ending or ending before the time slot, i.e. the consecutive partial sensing window is in the range [ n-T ] ₀ ，n-T _B ]And (3) inner part. From n-T ₁ Extend to n-T ₂ Is associated with time slot n.

In one example 0.1.1.1, T ₀ The degree of aperiodic resource reservation through the side link control information (SCI) is determined based on one of the following examples.

In one example 0.1.1.1.1, as in release 16, the SCI may indicate up to 2 future aperiodic reserved resources within 31 logical slots. In one example, T ₀ Corresponds to the physical duration of 31 logical slots preceding slot n, and slot n is the physical slot number. Alternatively, slot n corresponds to a logical slot index within the resource pool, and T ₀ Is 31 logical time slots within the resource pool, i.e. the sensing window is in time slotStart in->Is the logical slot index in the resource pool corresponding to slot n, if slot n is not in the resource pool, +.>Corresponding to the next or previous logical slot in the resource pool after or before slot n, respectively. Alternatively, the sensing window starts 31 logical time slots before the resource selection window starts, i.e. the sensing window starts at time slot +.>Start in->Is the first logical time slot within the resource selection window, i.e./i>Alternatively, when the UE selects the resource selection window +.>Y time slots within (e.g., when sequential partial sensing is combined with periodic based partial sensing) and time slots are time ordered, where time slotsThe first in time, the sensing window is in slot +.>31 logical time slots before the start, i.e. the sensing window starts in time slot +.>Start in->Is the index of the first logical slot selected by the UE within the resource selection window, i.e.,

in another aspectIn an example 0.1.1.1.2, the furthest aperiodic reservation that may be indicated in the SCI is after W logical slots from the slot of the SCI, where W may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T ₀ Corresponds to the physical duration of the W logical slots preceding slot n, and slot n is the physical slot number. Alternatively, slot n corresponds to a logical slot index within the resource pool, and T ₀ Is a logical time slot within the resource pool. In one example, W may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, W may be in units of logical time slots that may be in a resource pool. In another example, W may be in units of logical time slots in the resource pool, i.e., the sensing window is in time slotsStart in->Is a logical slot index in the resource pool corresponding to slot n, if slot n is not in the resource poolCorresponding to the next or previous logical slot in the resource pool after or before slot n, respectively. Alternatively, the sensing window starts W logical time slots before the resource selection window starts, i.e. the sensing window starts at time slot +.>Start in->Is the first logical time slot within the resource selection window. Alternatively, when the UE selects the resource selection window +.>Within Y time slots (e.g., whenContinuous partial sensing combined with periodic based partial sensing) and time slots ordered in time, wherein time slots +. >The first in time, the sensing window is in slot +.>W logical time slots before the start, i.e. the sensing window starts in time slot +.>Start in->Is the index of the first logical slot selected by the UE within the resource selection window. In one example, W may depend on UE capabilities. In one example, W may depend on the subcarrier spacing of the SL bandwidth portion (e.g., SL channel). In another example, T ₀ May be determined by the implementation of the UE. In another example, T ₀ May be determined by the implementation of the UE subject to the above constraints, e.g., T ₀ Not less than W, wherein T ₀ And W into the same time unit, e.g., logical time slots or physical time slots in the resource pool.

In yet another example 0.1.1.1.3, T ₀ In units of physical time or physical time slots, where T ₀ The configuration and/or updating may be specified by the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling.

In yet another example 0.1.1.1.4, T ₀ In units of logical time slots which may be in the resource pool or in the resource pool, where T ₀ The configuration and/or updating may be specified by the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling.

In yet another example 0.1.1.1.5, T ₀ Depending on the UE capabilities.

In yet another example 0.1.11.6, T ₀ Depending on the subcarrier spacing of the SL bandwidth portion (e.g., SL channel).

In yet another example 0.1.1.1.7, time T ₀ As determined by the implementation of the UE itself.

In yet another example 0.1.1.1.8, time T ₀ Configured or indicated by higher layers.

In one example 0.1.1.2 of the present invention,is based on a time delay for sensing from the end of the sensing window (or last sensed time slot) to time slot n where resource selection/reselection may occur, at least one of the following: (1) In one example 0.1.1.2.1, +.>(2) In one example 0.1.1.2.2, +.>Depending on UE capabilities; and (3) in another example 0.1.1.2.3,/i>Depending on the subcarrier spacing of the SL bandwidth portion (e.g., SL channel). For example, as shown in table 2. Table 2 shows +.>Examples of dependencies on subcarrier spacing. For example, a->Is the sensing processing delay time. For example, a->Is as described in table 8.1.4-1 of TS 38.214.

TABLE 2

In another example 0.1.1.2.4 of the present invention,the configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or RRC signaling.

In one example 0.1.1.2.5 of the present invention,the units may be in physical time (e.g., ms) or in physical time slots. In another example, a->May be in units of logical time slots that may be in a resource pool. In the other of the examples described above, in the present example,may be in units of logical time slots in the resource pool.

In another example 0.1.1.2.6, consecutive partial sensing windows are at time slots n-T _B Ending before, i.e. the consecutive partial sensing window is in the range [ n-T ] ₀ ，n-T _B ) And (3) inner part. Alternatively, successive partial sensing is performed at time slot n-T _B Ending or ending before the time slot, i.e. the consecutive partial sensing window is in the range [ n-T ] ₀ ，n-T _B ]And (3) inner part. Wherein, the liquid crystal display device comprises a liquid crystal display device,

in one example 0.1.1.2.7, T _B The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _B May be in units of logical time slots that may be in a resource pool. In another example, T _B May be in units of logical time slots in the resource pool.

In another example 0.1.1.2.8, time T _B As determined by the implementation of the UE itself.

In another example 0.1.1.2.9, time T _B Configured or indicated by higher layers.

In one example, if the start of the sensing window calculated according to example 0.1.1.1 is after the end of the sensing window calculated according to example 0.1.1.2, no continuous partial sensing is present.

Fig. 9 illustrates yet another example of a continuous portion sensing operation 900 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 900 shown in fig. 9 is for illustration only.

In another example 0.1.2, a first consecutive partial sensing window occurs before time slot n, as described in example 0.1.1, for resource selection/reselection in time slot n, and one or more second consecutive partial sensing windows occur for re-evaluation and/or preemption. As illustrated in the example of fig. 9, for a first SL transmission occurring in slot m, a resource re-evaluation check may occur in slot C as a result of the resource selection/re-selection in slot n, where slot C may be given as m-T _C (e.g., T _C ＝T ₃ As defined in release 16, wherein). The second consecutive partial sensing window may begin in time slot A2 and end before time slot B2, i.e., the second consecutive partial sensing window is within range [ A2, B2). Alternatively, the second continuous partial sensing window starts in time slot A2 and ends at or before time slot B2, i.e. the continuous partial sensing window is in the range [ A2, B2]And (3) inner part.

In one example 0.1.2.1, the time slot A2 can be determined by one of the following examples.

In one example 0.1.2.1.1, time slot A2 is determined based on time slot n, e.g., time slot A2 is time T after time slot n _nA I.e. A ₂ ＝n-T _nA Or after the last slot of the selection sense for the resource at slot n, where T _nA Can be specified in the system specification and/or through RRC signaling and/or MAC CE signaling and/or L1 controlSignaling to pre-configure and/or update. In one example, T _nA The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _nA May be in units of logical time slots that may be in a resource pool. In another example, T _nA May be in units of logical time slots in the resource pool. In one example, T _nA May depend on the UE capabilities. In one example, T _nA May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _nA May be determined by the implementation of the UE. In another example, T _nA May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In one example, T _nA =1 logical slot. In one example, T _nA =1 physical slot. In another example, T _nA =0. In one example, the start of the sensing window is after the last time slot sensed for the first consecutive portion of the sensing window. For example, if the last time slot sensed for the first consecutive partial sensing window is an in-time slotBefore time slot, the sensing window is in time slot +.>At the beginning of the process, i.e.,in another example, if the last slot sensed for the first consecutive partial sensing window is a slotThe sensing window is at slot +.>Beginning in (i.e.)>

In another example 0.1.2.1.2, the time slot A2 is determined based on the time slot m, e.g., the time slot A2 is the time T before the time slot m _Am I.e. a2=m-T _Am Wherein T is _Am The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _Am The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _Am May be in units of logical time slots that may be in a resource pool. In another example, T _Am May be in units of logical time slots in the resource pool. In one example, T _Am May depend on the UE capabilities. In one example, T _Am May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example, the furthest aperiodic reservation that can be indicated in the SCI is T after W logical slots from the slot of the SCI _Am Corresponding to the physical duration of the W logical slots preceding slot m. Alternatively, T _Am In logical time slots, and is equal to W. Wherein W may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, W may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, W may be in units of logical time slots that may be in a resource pool. In another example, W may be in units of logical time slots in the resource pool. In one example, W may depend on UE capabilities. In one example, W may depend on the subcarrier spacing of the SL bandwidth portion (e.g., SL channel). In one example, W is 31 logical slots. In another example, T _Am May be determined by the implementation of the UE. In another example, T _Am May be determined by the implementation of the UE subject to the above constraints, e.g., T _Am Not less than W, wherein T _Am And W into the same time unit, e.g., logical time slots or physical time slots in the resource pool.

In another example 0.1.2.1.3, the time slot A2 is n-T _nA And m-T _Am Is furthest in time, i.e. a2=max (n+t _nA ，m-T _Am ). Wherein T is _nA And T _Am Example 0.1.2.1.1 and example 0.1.2.1.2 are followed. In one example of this, in one implementation,and m-TAm =m-31, and thus a2=max (n-T _proc，0 M-31). In the other of the examples described above, in the present example,and m-T _Am =m-31, thus->

In another example 0.1.2.1.4, the time slot A2 is n-T _nA And m-TAm, i.e., a2=min (n+t _nA ，m-T _Am ). Wherein T is _nA And T _Am Example 0.1.2.1.1 and example 0.1.2.1.2 are followed. In one example, n+T _nA ＝n-T _proc，0 And m-T _Am =m-31, thusIn the other of the examples described above, in the present example,and m-T _Am =m-31, thus->

In another example 0.1.2.1.5, the time slot A2 is n-T _nA And m-T _Am Is a function of (a), i.e., a2=f (n+t) _nA ,m-T _Am ). Wherein T is _nA And T _Am Example 0.1.2.1.1 and example 0.1.2.1.2 are followed. In one example of this, in one implementation,and m-T _Am =m-31, so a2=f (n-T _proc,0 M-31). In another example, a->And m-T _Am =m-31, thus->

In another example 0.1.2.1.6, time slot A2 is determined based on time slot C, e.g., time slot A2 is time T before time slot m _AC I.e. a2=c-T _AC Wherein T is _AC The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _AC The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _AC May be in units of logical time slots that may be in a resource pool. In another example, T _AC May be in units of logical time slots in the resource pool. In one example, T _AC May depend on the UE capabilities. In one example, T _AC May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example, the furthest aperiodic reservation that can be indicated in the SCI is T after W logical slots from the slot of the SCI _AC Corresponding to the physical duration of the W logical slots preceding slot C. Alternatively, T _AC In logical time slots, and is equal to W. Wherein W may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, W may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, W may be in units of logical time slots that may be in a resource pool. In another example, W may be in units of logical time slots in the resource pool. In one example, W is 31 logical slots. In one example, W may depend on UE capabilities. In one example, W may depend on the subcarrier spacing of the SL bandwidth portion (e.g., SL channel). In another aspect In an example, T _AC May be determined by the implementation of the UE. In another example, T _AC May be determined by the implementation of the UE subject to the above constraints, e.g., T _AC Not less than W, wherein T _AC And W into the same time unit, e.g., logical time slots or physical time slots in the resource pool.

In another example 0.1.2.1.7, the time slot A2 is n+T _nA And C-T _AC Is furthest in time, i.e. a2=max (n+t _AC ,C-T _AC ). Wherein T is _nA And T _AC Example 0.1.2.1.1 and example 0.1.2.1.6 are followed.

In another example 0.1.2.1.8, the time slot A2 is N+T _nA And C-T _AC Is the earliest in time, i.e., a2=min (n+t _nA ,C-T _AC ). Wherein T is _nA And T _AC Example 0.1.2.1.1 and example 0.1.2.1.6 are followed.

In another example 0.1.2.1.9, the time slot A2 is n+T _nA And C-T _AC Is a function of (a), i.e., a2=f (n+t) _nA ,C-T _AC ). Wherein T is _nA And T _AC Example 0.1.2.1.1 and example 0.1.2.1.6 are followed.

In another example 0.1.2.1.10, the time slot A2 is determined by the implementation of the UE itself.

In another example 0.1.2.1.11, the time slot A2 is configured or indicated by a higher layer.

In one example 0.1.2.2, the time slot B2 can be determined by one of the following examples.

In one example 0.1.2.2.1, time slot B2 is determined based on time slot m, e.g., time slot B2 is time T before time slot m _Bm I.e. b2=m-T _Bm Wherein T is _Bm The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _Bm The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _Bm May be in units of logical time slots that may be in a resource pool. In another example, T _Bm Can be in a resource poolIs a unit of logical time slot. In one example, T _Bm May depend on the UE capabilities. In one example, T _Bm May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _Bm May be determined by the implementation of the UE. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities.

In another example 0.1.2.2.2, time slot B2 may be determined based on time slot m, e.g., time slot B2 is time T before time slot m _Bm I.e. b2=m-T _Bm WhereinAlternatively, the number of the first and second electrodes,where K is the additional delay. Wherein (1)>Is a delay for sensing from the end of the last slot of the sensed sensing window to the slot where the reevaluation check occurs, +. >Is the time delay between the time slot where the reevaluation check occurs and time slot m. In one example, the time between the reevaluation check time slot and time slot m (where SL transmission will occur) is denoted as T ₃ Wherein in this example T ₃ Substitute->In one example, a->And/orAnd/or K may depend on UE capabilities. At the position ofIn one example, a->And/or +.>And/or K may depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, a->And/or +.>And/or K may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->And/or +.>And/or K may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, a->And/or +.>And/or K may be in units of logical time slots that may be in the resource pool. In another example, a->And/or +.>And/or K may be in units of logical time slots in the resource pool. In one example, a->And/or +.>The corresponding parameters for the full sensing re-evaluation check may be the same. In another example, a->And/or +.>May be parameters separate from those used for full sensing re-evaluation checks. In another example, T _Bm May be determined by the implementation of the UE. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g.,/>wherein T is _Bm 、/>And K into the same time unit, e.g., logical time slots or physical time slots in the resource pool. />Depending on the subcarrier spacing, as shown in table 2.Depending on the subcarrier spacing, as shown in table 3. Table 3 shows +.>Examples of dependencies on subcarrier spacing. For example, a->Is the resource selection processing time. For example, a->Is as described in table 8.1.4-2 of TS 38.214.

TABLE 3

In one example 0.1.2.2.3, time slot B2 is determined based on time slot C, e.g., time slot B2 is time T prior to time slot C _BC I.e. b2=c-T _BC Wherein T is _BC The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _Bc The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _BC May be in units of logical time slots that may be in a resource pool. In another example, T _BC May be in units of logical time slots in the resource pool. In one example, T _BC May depend on the UE capabilities. In one example, T _BC May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _BC May be determined by the implementation of the UE. In another example, T _BC May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities.

In one example 0.1.2.2.4, time slot B2 is determined based on time slot C, e.g., time slot B2 is time T prior to time slot C _BC I.e. b2=c-T _BC WhereinWherein (1)>Is for the last time slot from the sensed sensing windowThe delay to sensing occurs until the time slot (e.g., time slot C) where the reevaluation check occurs. In one example of this, in one implementation,may depend on the UE capabilities. In one example, a->May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, a->The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->The units may be in physical time (e.g., ms) or in physical time slots. In another example, a- >May be in units of logical time slots that may be in a resource pool. In another example, a->May be in units of logical time slots in the resource pool. In one example, a->The corresponding parameters for the full sensing re-evaluation check may be the same. In another example, a->May be a separate parameter from the parameter used for the full sensing re-evaluation check. In another example, T _BC May be determined by the implementation of the UE. In another example, T _BC Implementation by a UE subject to the above constraintsDetermination of the manner, e.g. T _BC ≤Wherein T is _BC And->To the same time unit, e.g. logical time slots or physical time slots in the resource pool. />Depending on the subcarrier spacing, as shown in table 2. />

In one example 0.1.2.2.5, time slot B2 is determined based on time slot n, e.g., time slot B2 is time T after time slot n _nB I.e. b2=n+t _nB Wherein T is _nB The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _nB The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _nB May be in units of logical time slots that may be in a resource pool. In another example, T _nB May be in units of logical time slots in the resource pool. In one example, T _nB May depend on the UE capabilities. In one example, T _nB May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _nB May be determined by the implementation of the UE. In another example, T _nB May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities.

In another example 0.1.2.2.6, the time slot B2 is determined by the implementation of the UE itself.

In another example 0.1.2.2.7, the time slot B2 is configured or indicated by a higher layer.

In one example 0.1.2.3, time slot C may be the time slot in which the reevaluation check occurs, and time slot C may be determined by one of the following examples.

In one example 0.1.2.3.1, time slot C is determined based on time slot m, e.g., time slot C is time T before time slot m _Cm I.e. c=m-T _Cm Wherein T is _Cm The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, the time between the reevaluation check time slot and time slot m (where SL transmission will occur) is denoted as T ₃ I.e. T _Cm ＝T ₃ . In one example, T _Cm The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _Cm May be in units of logical time slots that may be in a resource pool. In another example, T _Cm May be in units of logical time slots in the resource pool. In one example, T _Cm May depend on the UE capabilities. In one example, T _Cm May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _Cm May be determined by the implementation of the UE. In another example, T _Cm May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In another example, there is more than one re-evaluation check slot C determined by the implementation of the UE. In another example, there is more than one re-evaluation check time slot C determined by the implementation of the UE, where one of the time slots is preconfigured/configured and/or determined by T as specified in the system specification/by the capabilities of the UE _Cm And (5) determining.

In one example 0.1.2.3.2, time slot C is determined based on time slot m, e.g., time slot C is time T before time slot m _Cm I.e. c=m-T _Cm Wherein T is _Cm ＝T _proc,1 . Wherein, the liquid crystal display device comprises a liquid crystal display device,is the time delay between the time slot where the reevaluation check occurs and time slot m. In one example, a->May depend on the UE capabilities. In one example, a->May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, a->The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->The units may be in physical time (e.g., ms) or in physical time slots. In another example, a->May be in units of logical time slots that may be in a resource pool. In another example, a->May be in units of logical time slots in the resource pool. In one example, a->The corresponding parameters for the full sensing re-evaluation check may be the same. In another example, a->May be parameters separate from those used for full sensing re-evaluation checks. In another example, T _Cm May be determined by the implementation of the UE. In another example, T _Cm May be determined by the implementation of the UE subject to the above constraints, e.g., +.>Wherein T is _Cm And->To the same time unit, e.g. logical time slots or physical time slots in the resource pool. In another example, there is more than one reevaluation check time slot C determined by the implementation of the UE, where one of the time slots is made up of T subject to the above constraints _Cm Determining, for example, that the nearest time slot satisfies +.>Or the nearest time slot satisfies-> Depending on the subcarrier spacing, as shown in table 3.

In one example 0.1.2.3.3, time slot C is determined based on time slot n, e.g., time slot C is time T after time slot n _nC I.e. c=n+t _nC Wherein T is _nC The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _nC The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _nC May be in units of logical time slots that may be in a resource pool. In another example, T _nC May be in units of logical time slots in the resource pool. In one example, T _nC May depend on the UE capabilities. In one example, T _nC May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _nC May be determined by the implementation of the UE. In another example, T _nC May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities.

In another example 0.1.2.3.4, slot C is determined by the implementation of the UE itself.

In another example 0.1.2.3.5, time slot C is configured or indicated by a higher layer.

In another example 0.1.2.4, the second consecutive partial sensing window starting in slot A2 continues until slot B2, where there is no further (re) transmission that has been previously reserved. A UE performing resource selection/reselection in a slot selects one or more SL resources for future (re) transmissions. Before transmitting on the SL resources, the UE performs a re-evaluation check for the SL resources to be signalled or used in the SL transmission that have been previously selected but not yet signalled in the previous SL transmission, and performs a new resource selection/re-selection procedure if any of the SL resources to be used or signalled is not available. Before transmitting on the SL resources, the UE performs a preemption check for the SL resources to be signaled or used in the SL transmission that have been previously signaled (e.g., reserved) in the previous SL transmission, and if any of the SL resources to be used or signaled is preempted, performs a new resource selection/reselection procedure on the preempted resources. After an initial resource selection for SL resources that have not been previously signaled, a second consecutive partial sensing window starts in slot A2. Wherein time slot A2 is determined based on one or more of the following as described in example 0.1.2.1: (1) Time slot n, where SL transmission (resource selection/reselection) is triggered by higher layers and initial resource selection occurs; (2) Time slot m ₁ In which a first potential SL transmission (in one example, m ₁ Is thatI.e., the first candidate slot of the Y candidate slots); and/or (3) time slot C ₁ Wherein a re-evaluation check for the first potential SL transmission may occur.

The second consecutive partial sensing window continues until slot B2, which is determined by one of the following examples.

In one slot, no more SL resources can be selected, as the resource selection window ends and/or the packet delay budget will be exceeded.

Fig. 10 illustrates yet another example of a continuous portion sensing operation 1000 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 1000 shown in fig. 10 is for illustration only.

In one example, the transmission of SL resources has no additional reserved resources. This is shown in fig. 10. The second sensing window is at time slot m of the first potential SL transmission ₁ Previously started and up to slot m of the last SL transmission without reserved resources _x Before. If the transmission of SL resources without additional reserved resources is in time slot m _x And the re-evaluation or preemption check of the corresponding resource is at time slot C _x The sensing window ends in slot B2. Wherein time slot B2 may be determined according to the example/sub-example of example 0.1.2.2, and time slot C _x May be determined in accordance with the example/sub-example of example 0.1.2.3.

In one example 0.1.2.4.1, the slot m _x When the SL (re) transmission in (B) reaches the maximum retransmission times, time slot m without additional reserved resources _x SL (re) transmission in (a) may occur.

In another example 0.1.2.4.2, the slot m _x When the SL (re) transmission in (B) reaches the maximum retransmission times, time slot m without additional reserved resources _x The SL (re) transmission in (b) may occur and there is no new transmission to reserve resources.

In another example 0.1.2.4.3, when no resources available in the resource selection window can be reserved for future SL transmissions, slot m with no additional reserved resources _x SL (re) transmission in (a) may occur.

In another example 0.1.2.4.4, SL (re) transmissions in time slots mx without additional reserved resources may occur when no available resources within the packet delay budget can be reserved for future SL transmissions.

Fig. 11 illustrates yet another example of a continuous portion sensing operation 1100 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 1100 shown in fig. 11 is for illustration only.

In one example, SL transmissions are positively acknowledged. The sensing window ends after a positive acknowledgement is received. This is shown in fig. 11. In this example, it may be implicitly or explicitly indicated that the slot of the positively acknowledged PSFCH resource is slot D. The sensing window ends in time slot B2, where b2=d+t _DB Wherein T is _DB The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _DB The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _DB May be in units of logical time slots that may be in a resource pool. In another example, T _DB May be in units of logical time slots in the resource pool. In one example, T _DB May depend on the UE capabilities. In one example, T _DB May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _DB May be determined by the implementation of the UE. In another example, T _DB May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In another example, T _DB May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities. In one alternative, the sensing ends after the UE receives an indication (implicit or explicit) of successful reception of a previous (re) transmission. In a second alternative, the sensing ends after the UE receives an indication of successful reception of the previous (re) transmission (implicit or explicit) and no new SL transmission (i.e. the last sequence in the sequence of packets).

Fig. 12 illustrates yet another example of a continuous portion sensing operation 1200 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 1200 shown in fig. 12 is for illustration only.

In one example, a SL transmission with HARQ-ACK or without feedback has a maximum number of retransmissions. The sensing window ends before the last HARQ retransmission. This is shown in fig. 12. Shown hereIn the example, the time slot of the last HARQ retransmission is time slot m _x . The sensing window ends in time slot B2, where b2=m _x -T _Bm Wherein T is _Bm The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. Time slot B2 is prior to the time slot of the re-evaluation check or preemption check of the last HARQ retransmission, T _Bm Can be based in part onTo determine. In one example, T _Bm The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _Bm May be in units of logical time slots that may be in a resource pool. In another example, T _Bm May be in units of logical time slots in the resource pool. In one example, T _Bm May depend on the UE capabilities. In one example, T _Bm May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _Bm May be determined by the implementation of the UE. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities. In one alternative, the sensing ends before the UE transmits the last HARQ retransmission. In a second alternative, the sensing ends before the UE transmits the last HARQ retransmission and there is no new SL transmission (i.e., the last sequence in the sequence of packets).

In another example 0.1.2.5, the second consecutive partial sensing window occurs before slot m for each of the slot m transmissions or potential SL transmissions. Time slot C may be associated with each SL transmission or potential SL transmission in time slot m, where time slot C may be a time slot for a re-evaluation check or preemption check of the SL transmissions in time slot m. Slot C may be determined according to an example/sub-example of example 0.1.2.3. The second consecutive partial sensing window may begin in time slot A2 and end in time slot B2. Therein, for each SL transmission or potential SL transmission in slot m and corresponding re-evaluation or preemption slot C, slot A2 may be determined according to the example/sub-example of example 0.1.2.1 and slot B2 may be determined according to the example/sub-example of example 0.1.2.2. In one example, more than one second consecutive partial sensing window may partially overlap, wherein a set of overlapping windows merge into a second consecutive partial sensing window that starts at an earliest start time of a second consecutive partial sensing window of the set of overlapping second consecutive partial sensing windows and ends at a latest end time of the second consecutive partial sensing windows of the set of overlapping second consecutive partial sensing windows.

Fig. 13 illustrates yet another example of a continuous portion sensing operation 1300 according to an embodiment of the disclosure. The embodiment of the continuous portion sensing operation 1300 shown in fig. 13 is for illustration only.

This is illustrated by way of example in fig. 13. In fig. 13, there is a frame for slot m ₁ 、m ₂ And m ₃ 3 slots of SL transmission or potential SL transmission, m for each slot _x (in this example, x=1, 2, 3) determines the continuous portion sensing window, as described above and illustrated by way of example in fig. 13. The sensing windows overlap and thus merge into one continuous portion sensing window, as illustrated in fig. 13, starting in the largest starting time slot A2 of the overlapping continuous portion sensing window and ending at or before the last ending time slot B2 of the overlapping continuous portion sensing window. It is also possible that the windows do not overlap, or that some windows overlap and some windows do not overlap.

In another example 0.1.2.6, it is believed that SL transmission will be in slot m _i And slot m _i+1 Occurs in time slot m _i And m _i+1 No other SL emissions occur in between. For time slot m _i The sensing window of the re-evaluation/preemption check of transmissions in time slot a _i And B _i Extending therebetween, i.e., [ A ] _i ，B _i ]Or [ A ] _i ，B _i ). For time slot m _i+1 The sensing window of the re-evaluation/preemption check of transmissions in time slot a _i+1 And B _i+1 Extending therebetween, i.e., [ A ] _i+1 ，B _i+1 ]Or [ A ] _i+1 ，B _i+1 ). In one example, if the sensing window is [ A ] _i ，B _i ]And [ A ] _i+1 ，B _i+1 ]Then A _i+1 >B _i . In another example, if the sensing window is [ A ] _i ，B _i ) And [ A ] _i+1 ，B _i+1 ) Then A _i+1 ≥B _i . In one example, if at m _i Determining m prior to re-evaluation/preemption check of (c) _i+1 Then, according to 0.1.2.2.2,and A is _i+1 At m _i+1 The first 31 logical slots start, thus A _i+1 ＝max(B _i+1 +1,m _i+1 -31) (i.e.)>m _i+1 -31)) or A _i+1 ＝max(B _i ,m _i+1 -31) (i.e.,in another example, at time slot m _i Determining m during re-evaluation/preemption check of (c) _i+1 For m _i+1 Only when slot m has occurred _i Starting in the time slot after the time slot of the re-evaluation/preemption check, i.e. time slot +.>(or m) _i -T ₃ ) Thus, it is

In example 0.2, the continuous portion sensing starts before slot n and ends after slot n or ends at or after slot n.

In one example 0.2.1, successive partial sensing begins in time slot a, where a = n-T ₀ Or (b)And ends before time slot B, i.e., the consecutive partial sensing window is within range a, B). Alternatively, successive partial sensing starts in time slot a, where a=n-T ₀ Or-> And ends at or before time slot B, i.e. the consecutive partial sensing window is in range a, B]And (3) inner part. In this example, the consecutive partial sensing window ends before the time slot of the first SL transmission.

In one example 0.2.1.1, n-T ₀ (e.g.,) According to an example/sub-example of example 0.1.1.1.

Fig. 14 illustrates yet another example of a continuous portion sensing operation 1400 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 1400 shown in fig. 14 is for illustration only.

In one example 0.2.1.2, for a first SL transmission occurring in time slot m, a resource re-evaluation check may occur in time slot C as a result of the resource selection/re-selection in time slot n, where time slot C may be given as m-T _C . Time slot B may be determined according to the example/sub-example of example 0.1.2.2 and time slot C may be determined according to the example/sub-example of example 0.1.2.3. This is shown in fig. 14.

In another example 0.2.2, for a higher layer triggered SL transmission (resource selection/reselection) in slot n, the first continuous portion sensing window ends before slot C of the reevaluation check of the first SL transmission or potential SL transmission, as shown in fig. 14. When re-evaluation and/or preemption checks are enabled, one or more second consecutive partial sensing windows are used for re-evaluation checks and/or preemption checks for the next SL transmissions.

Fig. 15 illustrates yet another example of a continuous portion sensing operation 1500 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 1500 shown in fig. 15 is for illustration only.

In another example 0.2.3, the continuous portion is sensed to be equal to n-T ₀ Or (b)Starting in time slot a and ending before time slot B, i.e. the consecutive partial sensing window is within range a, B). Alternatively, the continuous portion is sensed at n-T ₀ Or->Starting in time slot a of (c) and ending in or before time slot B, i.e. the consecutive partial sensing window is in the range [ a, B]And (3) inner part. The resources transmitted in a slot may be indicated for up to slot m _x Reserved resources for future SL (re) transmissions, wherein the SL transmissions do not include reservations for future SL (re) transmissions. In this example, when re-evaluation and/or preemption checks are enabled, the consecutive partial sensing window ends before the time slot of the SL transmission that is not reserved for future SL transmissions. This is shown in fig. 15.

In one example 0.2.3.1, n-T ₀ (e.g.,) According to an example/sub-example of example 0.1.1.1.

In one example 0.2.3.2, for a time slot m _x SL transmissions occurring in (a) are in slot C without additional reserved resources and the re-evaluation or preemption check of the corresponding resources is in slot C _x In the case of (a), the sensing window is in timeEnding in slot B. Wherein time slot B may be determined according to the example/sub-example of example 0.1.2.2, and time slot C _x May be determined in accordance with the example/sub-example of example 0.1.2.3.

In one example 0.2.3.3, the slot m _x When the SL (re) transmission in (B) reaches the maximum retransmission times, time slot m without additional reserved resources _x SL (re) transmission in (a) may occur.

In another example 0.2.3.4, the slot m _x When the SL (re) transmission in (B) reaches the maximum retransmission times, time slot m without additional reserved resources _x The SL (re) transmission in (b) may occur and there is no new transmission to reserve resources.

In another example 0.2.3.5, when no resources available in the resource selection window can be reserved for future SL transmissions, slot m with no additional reserved resources _x SL (re) transmission in (a) may occur.

In another example 0.2.3.6, when no resources available within the packet delay budget can be reserved for future SL transmissions, slot m with no additional reserved resources _x SL (re) transmission in (a) may occur.

In another example 0.2.4, the continuous portion is sensed to be equal to n-T ₀ Or (b)Starting in time slot a and ending before time slot B, i.e. the consecutive partial sensing window is within range a, B). Alternatively, the continuous portion is sensed at n-T ₀ Or->Starting in time slot a of (c) and ending in or before time slot B, i.e. the consecutive partial sensing window is in the range [ a, B]And (3) inner part. In this example, when re-evaluation and/or preemption checks are enabled, it may be implicitly or explicitly indicated that the time slot of the positively acknowledged PSFCH resource is time slot D. In one alternative, sensing is coordinated after the UE receives an indication (implicit or explicit) of successful receipt of a previous (re) transmissionA bundle. This is shown in fig. 16.

Fig. 16 illustrates yet another example of a continuous portion sensing operation 1600 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 1600 shown in fig. 16 is for illustration only.

In a second alternative, the sensing ends after the UE receives an indication of successful reception of the previous (re) transmission (implicit or explicit) and no new SL transmission (i.e. the last sequence in the sequence of packets).

In one example 0.2.4.1, n-T ₀ (e.g.,) According to an example/sub-example of example 0.1.1.1.

In one example 0.2.4.2, the sensing window ends in time slot B, where b=d+t _DB Wherein T is _DB The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _DB The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _DB May be in units of logical time slots that may be in a resource pool. In another example, T _DB May be in units of logical time slots in the resource pool. In one example, T _DB May depend on the UE capabilities. In one example, T _DB May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _DB May be determined by the implementation of the UE. In another example, T _DB May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In another example, T _DB May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities.

In another example 0.2.5, the continuous portion is sensed to be equal to n-T ₀ Or (b)Starting in time slot a and ending before time slot B, i.e. the consecutive partial sensing window is within range a, B). Alternatively, the continuous portion is sensed at n-T ₀ Or->Starting in time slot a of (c) and ending in or before time slot B, i.e. the consecutive partial sensing window is in the range [ a, B ]And (3) inner part. In this example, the SL transmission with HARQ-ACK or without feedback has the maximum number of retransmissions. In this example, when re-evaluation and/or preemption checks are enabled, the sensing window ends before the last HARQ retransmission. In one alternative, the sensing ends before the last HARQ retransmission. This is shown in fig. 17.

Fig. 17 illustrates yet another example of a continuous portion sensing operation 1700 in accordance with an embodiment of the disclosure. The embodiment of the continuous portion sensing operation 1700 shown in fig. 17 is for illustration only.

In a second alternative, sensing ends before the last HARQ retransmission and no new SL transmission (i.e., the last sequence in the sequence of packets).

In one example 0.2.5.1, n-T ₀ (e.g.,) According to an example/sub-example of example 0.1.1.1.

In one example 0.2.5.2, the time slot of the last HARQ retransmission is time slot m _x The sensing window ends in slot B, where b=m _x -T _Bm Wherein T is _Bm The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. Time slot B is prior to the time slot of the re-evaluation check or preemption check of the last HARQ retransmission, T _Bm Can be based in part onTo determine. In one example, T _Bm The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _Bm May be in units of logical time slots that may be in a resource pool. In another example, T _Bm May be in units of logical time slots in the resource pool. In one example, T _Bm May depend on the UE capabilities. In one example, T _Bm May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _Bm May be determined by the implementation of the UE. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities.

In another example 0.3, the successive partial sensing occurs after time slot n.

Fig. 18 illustrates yet another example of a continuous portion sensing operation 1800 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 1800 shown in fig. 18 is for illustration only.

In one example 0.3.1, as illustrated in fig. 18, the continuous portion sensing starts in slot a and ends before slot B, i.e., the continuous portion sensing window is within range [ a, B). Alternatively, the continuous partial sensing starts in time slot a and ends at or before time slot B, i.e. the continuous partial sensing window is in range [ a, B]And (3) inner part. The UE performs resource selection/reselection (candidate resource determination/reporting to higher layers) in slot R. From R+T ₁ Extends to R+T ₂ Or from n+T ₁ Extending to n+T ₂ Associated with a resource selection slot R.

In one example 0.3.1.1, time slot a is determined based on one of the following examples.

In one example 0.3.1.1.1, time slot A is determined based on time slot n, e.g., time slot A is T after time slot n ₀ I.e.,A＝n+T ₀ wherein T is ₀ The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T ₀ The units may be in physical time (e.g., ms) or in physical time slots. In another example, T ₀ May be in units of logical time slots that may be in a resource pool. In another example, T ₀ May be in units of logical time slots in the resource pool. In one example, T ₀ May depend on the UE capabilities. In one example, T ₀ May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, time T ₀ As determined by the implementation of the UE itself. In another example, T ₀ May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities.

In another example 0.3.1.1.2, slot a is determined based on slot R, where slot R is the slot in which the UE performs resource selection, e.g., slot a is T before slot R _AR I.e. a=r-T _AR Wherein T is _AR The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _AR The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _AR May be in units of logical time slots that may be in a resource pool. In another example, T _AR May be in units of logical time slots in the resource pool. In one example, T _AR May depend on the UE capabilities. In one example, T _AR May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example, the furthest aperiodic reservation that can be indicated in the SCI is T after W logical slots from the slot of the SCI _AR Corresponding to the physical duration of the W logical slots preceding slot R. Alternatively, T in logical time slots _AR Equal to W. Wherein W may be specified in the system specification and/or by RRC signaling and/or MAC CE signaling and +.Or L1 control signaling to pre-configure and/or update. In one example, W may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, W may be in units of logical time slots that may be in a resource pool. In another example, W may be in units of logical time slots in the resource pool, i.e., the sensing window is in time slotsStart in->Is the logical slot index in the resource pool corresponding to slot R, if slot R is not in the resource pool, +.>Corresponding to the next or previous logical slot in the resource pool after or before the slot R, respectively. Alternatively, the sensing window starts W logical time slots before the resource selection window starts, i.e. the sensing window starts at time slot +. >Start in->Is the first logical time slot within the resource selection window. In one example, W may depend on UE capabilities. In one example, W may depend on the subcarrier spacing of the SL bandwidth portion (e.g., SL channel). In another example, time T _AR As determined by the implementation of the UE itself. In another example, T _AR May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities. In one example, W is 31 logical slots.

In another example 0.3.1.1.3, slot a is determined based on a resource selection window. In one sub-example, the first time slot of the resource selection window isAnd slot A is defined by->Given. In another sub-example, the first slot of the Y candidate slots within the resource selection window is +.>And slot A is defined by->Given. Wherein W is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. For example, if W is not (pre) configured, a system-specified value is used. In one example, T _AR The units may be in physical time (e.g., ms) or in physical time slots. In another example, W may be in units of logical time slots that may be in a resource pool. In another example, W may be in units of logical time slots in the resource pool. In one example, W may depend on UE capabilities. In one example, W may depend on the subcarrier spacing of the SL bandwidth portion (e.g., SL channel). In another example, the time W is determined by an implementation of the UE itself. In another example, W may be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value that depends on UE capabilities. In one example, W is 31 logical slots.

In another example 0.3.1.6, time slot a is the latest time slot calculated according to the following example: (1) examples 0.3.1.1 and 0.3.1.2; (2) examples 0.3.1.1 and 0.3.1.3; (3) examples 0.3.1.2 and 0.3.1.3; and (4) examples 0.3.1.1, 0.3.1.2, and 0.3.1.3.

In another example 0.3.1.5, slot a is determined by the implementation of the UE itself.

In another example 0.3.1.6, time slot a is configured or indicated by a higher layer.

In one example 0.3.1.2, slot B is determined based on one of the following examples.

In one example 0.3.1.2.1, slot B is determined based on slot n, e.g., slot B is T after slot n _nB I.e. b=n+t _nB Wherein T is _nB The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _nB The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _nB May be in units of logical time slots that may be in a resource pool. In another example, T _nB May be in units of logical time slots in the resource pool. In one example, T _nB May depend on the UE capabilities. In one example, T _nB May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, time T _nB As determined by the implementation of the UE itself. In another example, T _nB May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities.

In another example 0.3.1.2.2, slot B is determined based on the beginning of a continuous portion sensing window that begins in slot a, e.g., b=a+t _AB Wherein T is _AB The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _AB The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _AB May be in units of logical time slots that may be in a resource pool. In another example, T _AB May be in units of logical time slots in the resource pool. In one example, T _AB May depend on the UE capabilities. In one example, T _AB May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). T (T) _AB Is the length of the continuous portion sensing window. In another example, time T _AB As determined by the implementation of the UE itself. In another example, T _AB May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities.

In another example 0.3.1.2.3, slot B is determined based on slot R, where slot R is the slot in which the UE performs resource selection, e.g., slot B is T preceding slot R _BR I.e. b=r-T _BR Wherein T is _BR The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _BR The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _BR May be in units of logical time slots that may be in a resource pool. In another example, T _BR May be in units of logical time slots in the resource pool. In one example, T _BR May depend on the UE capabilities. In one example, T _BR May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example, T _BR Is the delay for sensing (e.g.,). In one example, T _BR Cannot exceed the delay for sensing (e.g.) >). In one example, T _BR Cannot be smaller than the delay for sensing (e.g.)>). Wherein (1)>The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->The units may be in physical time (e.g., ms) or in physical time slots. In another example, a->May be in units of logical time slots that may be in a resource pool. In another example, a->May be in units of logical time slots in the resource pool. In one example, a->May depend on the UE capabilities. In one example, a->May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, time T _BR As determined by the implementation of the UE itself. In another example, T _BR May be determined by implementations subject to the above constraints, e.g. not exceeding a threshold of a higher layer configuration and/or not exceeding a value depending on UE capabilities, e.g. +.> As can be shown in table 2.

In another example 0.3.1.2.4, slot B is determined based on a resource selection window. In one sub-example, the first time slot of the resource selection window isAnd slot B is defined by- >Given. In another sub-example, the first slot of the Y candidate slots within the resource selection window is +.>And slot B is defined by->Given. Wherein T is _BW The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _BW The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _BW May be in units of logical time slots that may be in a resource pool. In another example, T _BW May be in units of logical time slots in the resource pool. In one example, T _BW May depend on the UE capabilities. In one example, T _BW May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example of this, in one implementation,alternatively, the number of the first and second electrodes,where K is the additional delay. Wherein (1)>Is a delay for sensing from the end of the last slot of the sensed sensing window to the time slot (e.g. time slot R) where the (re) selection of resources takes place, is +.>Is between the time slot (e.g. time slot R) where the (re) selection of resources takes place and the time slot +.>Or time slot->Time delay between them. In one example, a->And/or +.>And/or K may depend on UE capabilities. In one example, a- >And/or +.>And/or K may depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, a->And/orAnd/or K may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->And/or +.>And/or K may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, a->And/or +.>And/or K may be in units of logical time slots that may be in the resource pool. In another example, a->And/or +.>And/or K may be in units of logical time slots in the resource pool. In one example, a->And/or +.>May be the same as the corresponding parameters for the resource (re) selection for full sensing. In another example, a->And/or +.>May be parameters separate from those used for the (re) selection of the fully sensed resources. In another example, T _BW May be determined by the implementation of the UE. In another example, T _BW May be determined by the implementation of the UE subject to the above constraints, e.g.,wherein T is _BW 、/>And K into the same time unit, e.g., logical time slots or physical time slots in the resource pool. / >Depending on the subcarrier spacing, as shown in table 2. />Depending on the subcarrier spacing, as shown in table 3.

In another example 0.3.1.2.5, slot B is determined by the implementation of the UE itself.

In another example 0.3.1.2.6, slot B is configured or indicated by a higher layer.

In one example 0.3.1.3, the time slot R is determined based on one of the following examples.

In one example 0.3.1.3.1, the time slot R is determined based on the time slot n, e.g., the time slot R is T after the time slot n _nR I.e. r=n+t _nR Wherein T is _nR The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _nR The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _nR May be in units of logical time slots that may be in a resource pool. In another example, T _nR May be in units of logical time slots in the resource pool. In one example, T _nR May depend on the UE capabilities. In one example, T _nR May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, time T _nR As determined by the implementation of the UE itself. In another example, T _nR May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities.

In another example 0.3.1.3.2, a time slot R is determined based on time slot A, e.g., time slot R is T after time slot A _AR I.e. r=a+t _AR Wherein T is _AR The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _AR The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _AR May be in units of logical time slots that may be in a resource pool. In another example, T _AR May be in units of logical time slots in the resource pool. In one example, T _AR May depend on the UE capabilities. In one example, T _AR May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example, T _AR May depend on the SL bandwidth portion (e.g., SL channel) Is used for the transmission of the data. In one example, the furthest aperiodic reservation that can be indicated in the SCI is T after W logical slots from the slot of the SCI _AR Corresponding to the physical duration of the W logical slots preceding slot R. Alternatively, T in logical time slots _AR Equal to W. Wherein W may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, W may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, W may be in units of logical time slots that may be in a resource pool. In another example, W may be in units of logical time slots in the resource pool. In one example, W may depend on UE capabilities. In one example, W may depend on the subcarrier spacing of the SL bandwidth portion (e.g., SL channel). In another example, time T _AR As determined by the implementation of the UE itself. In another example, T _AR May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities. In another example 0.3.1.3.3, a time slot R is determined based on a time slot B, e.g., time slot R is T after time slot B _BR I.e. r=b+t _BR Wherein T is _BR The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _BR The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _BR May be in units of logical time slots that may be in a resource pool. In another example, T _BR May be in units of logical time slots in the resource pool. In one example, T _BR May depend on the UE capabilities. In one example, T _BR May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example, T _BR Is the delay for sensing (e.g.,). In one example of this, in one implementation,T _BR cannot exceed the delay for sensing (e.g.)>). In one example, T _BR Cannot be smaller than the delay for sensing (e.g.)>). Wherein, the liquid crystal display device comprises a liquid crystal display device,the configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->The units may be in physical time (e.g., ms) or in physical time slots. In another example, a->May be in units of logical time slots that may be in a resource pool. In another example, a->May be in units of logical time slots in the resource pool. In one example, a->May depend on the UE capabilities. In one example, a- >May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, time T _BR As determined by the implementation of the UE itself. In another example, T _BR May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities, e.g., as can be shown in table 2. In another example 0.3.1.3.4, the time slot R is determined based on a resource selection window. In one sub-example, the first time slot of the resource selection window is +.>And the time slot R is formed byGiven. In another sub-example, the first slot of the Y candidate slots within the resource selection window isAnd time slot R is defined by->Given. Wherein T is _RW The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _RW The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _RW May be in units of logical time slots that may be in a resource pool. In another example, T _RW May be in units of logical time slots in the resource pool. In one example, T _RW May depend on the UE capabilities. In one example, T _RW May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example, T _RW Is a delay for resource (re) selection (e.g.)>). In one example, T _RW Cannot exceed the time delay for (re) selection (e.g.)>). In one example, T _RW Cannot be smaller than the delay for (re) selection (e.g.)>). Wherein (1)>The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->The units may be in physical time (e.g., ms) or in physical time slots. In another example, a->May be in units of logical time slots that may be in a resource pool. In another example, a->May be in units of logical time slots in the resource pool. In one example, a->May depend on the UE capabilities. In one example, a->May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, time T _RW As determined by the implementation of the UE itself. In another example, T _RW May be determined by the implementation of the UE subject to the above constraints, e.g. not exceeding a threshold of a higher layer configuration and/or not exceeding a value depending on the UE capabilities, e.g. < - > As can be shown in table 3.

In another example 0.3.1.3.5, the time slot R is determined by the implementation of the UE itself.

In another example 0.3.1.3.6, the time slot R is configured or indicated by a higher layer.

In one example 0.3.1.4, the first time slot of the resource selection window W is determined based on one of the following examples.

In one example 0.3.1.4.1, slot W is determined based on slot n, e.g., slot W is T after slot n _nW I.e. w=n+t _nW Wherein T is _nW The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _nW The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _nW May be in units of logical time slots that may be in a resource pool. In another example, T _nW May be in units of logical time slots in the resource pool. In one example, T _nW May depend on the UE capabilities. In one example, T _nW May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, time T _nW As determined by the implementation of the UE itself. In another example, T _nW May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities.

In another example 0.3.1.4.2, slot W is determined based on slot a, where slot a is the first slot of the sensing window, e.g., slot W is T after slot a _AW I.e. w=a+t _AW Wherein T is _AW The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _AW May be in units of physical time (e.g., ms) orIn units of physical time slots. In another example, T _AW May be in units of logical time slots that may be in a resource pool. In another example, T _AW May be in units of logical time slots in the resource pool. In one example, T _AW May depend on the UE capabilities. In one example, T _AW May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example, the furthest aperiodic reservation that can be indicated in the SCI is T after W logical slots from the slot of the SCI _AW Corresponding to the physical duration of the W logical slots preceding slot R. Alternatively, T in logical time slots _AW Equal to W. Wherein W may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, W may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, W may be in units of logical time slots that may be in a resource pool. In another example, W may be in logical time slots in the resource pool, i.e. the resource (re) selection window is in time slots Start in->Is the logical slot index corresponding to slot a in the resource pool. In one example, W may depend on UE capabilities. In one example, W may depend on the subcarrier spacing of the SL bandwidth portion (e.g., SL channel). In another example, time T _AW As determined by the implementation of the UE itself. In another example, T _AW May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities. In one example, W is 31 logical slots.

In another example 0.3.1.4.3, a time slot W is determined based on time slot B, where W = B + T _BW . Wherein T is _BW Specifying and/or passing RRC signaling and in System SpecificationAnd/or MAC CE signaling and/or L1 control signaling. In one example, T _BW The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _BW May be in units of logical time slots that may be in a resource pool. In another example, T _BW May be in units of logical time slots in the resource pool. In one example, T _BW May depend on the UE capabilities. In one example, T _BW May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example of this, in one implementation, alternatively, the +>Where K is the additional delay. Wherein (1)>Is the delay for sensing from the end of the last slot of the sensed sensing window to the time slot (e.g., time slot R) where the (re) selection of resources occurs,is the time delay between the time slot (e.g., time slot R) in which the resource (re) selection occurs and time slot W. In one example of this, in one implementation,and/or +.>And/or K may depend on UE capabilities. In one example, a->And/or +.>And/or K may depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, a->And/or +.>And/or K may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->And/or +.>And/or K may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, a->And/or +.>And/or K may be in units of logical time slots that may be in the resource pool. In another example, a->And/or +.>And/or K may be in units of logical time slots in the resource pool. In one example, a- >And/or +.>Can be used for full sensingThe corresponding parameters of the resource (re) selection are the same. In another example, a->And/or +.>May be parameters separate from those used for the (re) selection of the fully sensed resources. In another example, T _BW May be determined by the implementation of the UE. In another example, T _BW May be determined by the implementation of the UE subject to the above constraints, e.g., wherein T is _BW 、/>And K into the same time unit, e.g., logical time slots or physical time slots in the resource pool. />Depending on the subcarrier spacing, as shown in table 2. />Depending on the subcarrier spacing, as shown in table 3.

In another example 0.3.1.4.4, a time slot W is determined based on a time slot R, e.g., time slot W is T after time slot R _RW I.e. w=r+t _RW Wherein T is _RW The configuration and/or updating is specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _RW The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _RW May be in units of logical time slots that may be in a resource pool. In another oneIn the example, T _RW May be in units of logical time slots in the resource pool. In one example, T _RW May depend on the UE capabilities. In one example, T _RW May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example, T _RW Is the delay for resource (re) selection (e.g.,). In one example, T _RW Cannot exceed the time delay for (re) selection (e.g.)>). In one example, T _RW Cannot be smaller than the delay for (re) selection (e.g.,). Wherein (1)>The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->The units may be in physical time (e.g., ms) or in physical time slots. In another example, a->May be in units of logical time slots that may be in a resource pool. In another example, a->May be in units of logical time slots in the resource pool. In one example of this, in one implementation,may depend on the UE capabilities. In one example，/>May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, time T _RW As determined by the implementation of the UE itself. In another example, the TRW may be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of higher layer configuration and/or not exceeding a value dependent on UE capabilities, e.g., a +_ > As can be shown in table 3.

In another example 0.3.1.4.5, the time slot W is determined by the implementation of the UE itself.

In another example 0.3.1.4.6, the time slot W is configured or indicated by a higher layer.

Fig. 19 illustrates yet another example of a continuous portion sensing operation 1900 in accordance with an embodiment of the disclosure. The embodiment of the continuous portion sensing operation 1900 shown in fig. 19 is for illustration only.

In another example 0.3.2, as illustrated in fig. 19, a first continuous portion sensing window occurs prior to resource selection/reselection (e.g., in time slot R), as described in example 0.3.1, and one or more second continuous portion sensing windows occur for re-evaluation and/or preemption. For a first or potential SL transmission occurring in time slot m, a resource re-evaluation check may occur in time slot C as a result of the resource selection/re-selection in time slot R, where time slot C may be given as m-T _C (e.g., T _C ＝T ₃ As defined in release 16). The second consecutive partial sensing window may begin in time slot A2 and end before time slot B2, i.e., the second consecutive partial sensing window is within range [ A2, B2). Alternatively, the second consecutive partial sensing window starts in time slot A2 and ends at or before time slot B2, i.e. consecutive partial The sensing window is in the range [ A2, B2 ]]And (3) inner part.

In one example 0.3.2.1, the time slot A2 can be determined by one of the following examples.

In one example 0.3.2.1.1, time slot A2 is determined based on time slot n, e.g., time slot A2 is time T after time slot n _nA I.e. a2=n+t _nA Wherein T is _nA May be specified in a system specification (e.g., T _nA =0 or T _nA =1) and/or pre-configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _nA The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _nA May be in units of logical time slots that may be in a resource pool. In another example, T _nA May be in units of logical time slots in the resource pool. In one example, T _nA May depend on the UE capabilities. In one example, T _nA May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, time T _nA As determined by the implementation of the UE itself. In another example, T _nA May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities.

In one example 0.3.2.1.2, time slot A2 is determined based on time slot R, e.g., time slot A2 is time T after time slot R _RA I.e. a2=r+t _RA Or after the last slot of the selection sense for the resource at slot R, where T _RA May be specified in a system specification (e.g., T _RA =0 or T _RA =1) and/or pre-configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _RA The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _RA May be in units of logical time slots that may be in a resource pool. In another example, T _RA May be in units of logical time slots in the resource pool. In one example, T _RA May depend onUE capability. In one example, T _RA May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, time T _RA As determined by the implementation of the UE itself. In another example, T _RA May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In one example, T _RA =1 logical slot. In one example, T _RA =1 physical slot. In another example, T _RA =0. In one example, the start of the sensing window is after the last time slot sensed for the first consecutive portion of the sensing window. For example, if the last time slot sensed for the first consecutive partial sensing window is an in-time slotBefore the time slot, the sensing window is in the time slotBeginning in (i.e.)> . In another example, if the last slot sensed for the first consecutive portion sensing window is slot +.>The sensing window is at slot +.>Beginning in (i.e.)> As can be shown in table 2.

In another example 0.3.2.1.3, the time slot A2 is determined based on the time slot m, e.g., the time slot A2 is the time T before the time slot m _Am I.e. a2=m-T _Am Wherein T is _Am The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _Am The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _Am May be in units of logical time slots that may be in a resource pool. In another example, T _Am May be in units of logical time slots in the resource pool. In one example, T _Am May depend on the UE capabilities. In one example, T _Am May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example, the furthest aperiodic reservation that can be indicated in the SCI is T after W logical slots from the slot of the SCI _Am Corresponding to the physical duration of the W logical slots preceding slot m. Alternatively, T in logical time slots _Am Equal to W. Wherein W may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, W may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, W may be in units of logical time slots that may be in a resource pool. In another example, W may be in units of logical time slots in the resource pool. In one example, W may depend on UE capabilities. In one example, W may depend on the subcarrier spacing of the SL bandwidth portion (e.g., SL channel). In one example, W is 31 logical slots. In another example, time T _Am As determined by the implementation of the UE itself. In another example, T _Am May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities.

In another example 0.3.2.1.4, the time slot A2 is n+T _nA And m-T _Am Is furthest in time, i.e. a2=max (n+t _nA ,m-T _Am ). Wherein T is _nA And T _Am Example 0.3.2.1.1 and example 0.3.2.1.3 are followed.

In another example 0.3.2.1.5, the time slot A2 is n+T _nA And m-T _Am Is the earliest in time, i.e., a2=min (n+t _nA ,m-T _Am ). Wherein T is _nA And T _Am Example 0.3.2.1.1 and example 0.3.2.1.3 are followed.

In another example 0.3.2.1.6, the time slot A2 is n+T _nA And m-T _Am Is a function of (a), i.e., a2=f (n+t) _nA ,m-T _Am ). Wherein T is _nA And T _Am Example 0.3.2.1.1 and example 0.3.2.1.3 are followed.

In another example 0.3.2.1.7, the time slot A2 is R+T _RA And m-T _Am Is furthest in time, i.e. a2=max (r+t _RA ,m-T _Am ). Wherein T is _RA And T _Am Example 0.3.2.1.2 and example 0.3.2.1.3 are followed. In one example of this, in one implementation,and m-T _Am =m-31, thus->In another example, a-> And m-T _Am =m-31, thus />

In another example 0.3.2.1.8, the time slot A2 is R+T _RA And m-T _Am Is the earliest in time, i.e., a2=min (R-T _RA ,m-T _Am ). Wherein T is _RA And T _Am Example 0.3.2.1.2 and example 0.3.2.1.3 are followed. In one example of this, in one implementation,and m-T _Am =m-31, thus->In another example, a-> And m-T _Am =m-31, thus->-31)。

In another example 0.3.2.1.9, the time slot A2 is R+T _RA And m-T _Am I.e. a2=f (r+t _RA ,m-T _Am ). Wherein T is _RA And T _Am Example 0.3.2.1.2 and example 0.3.2.1.3 are followed. In one example of this, in one implementation,and m-T _Am =m-31, thus->In another example, a->And m-T _Am =m-31, thus->

In another example 0.3.2.1.10, time slot A2 is determined based on time slot C, e.g., time slot A2 is time T before time slot m _AC I.e. a2=c-T _AC Wherein T is _AC Can be specified in the system specification and/or through RRC signaling and/or MACCE signaling and/or L1 control signaling to pre-configure and/or update. In one example, T _AC The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _AC May be in units of logical time slots that may be in a resource pool. In another example, T _AC May be in units of logical time slots in the resource pool. In one example, T _AC May depend on the UE capabilities. In one example, T _AC May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In one example, the furthest aperiodic reservation that can be indicated in the SCI is T after W logical slots from the slot of the SCI _AC Corresponding to the physical duration of the W logical slots preceding slot C. Alternatively, T in logical time slots _AC Equal to W. In another example, time T _AC As determined by the implementation of the UE itself. In another example, T _AC May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities. In one example, W is 31 logical slots.

In another example 0.3.2.1.11, the time slot A2 is n+T _nA And C-T _AC Is furthest in time, i.e. a2=max (n+t _nA ,C-T _AC ). Wherein T is _nA And T _AC Example 0.3.2.1.1 and example 0.3.2.1.10 are followed.

In another example 0.3.2.1.12, the time slot A2 is n+T _nA And C-T _AC Is the earliest in time, i.e., a2=min (n+t _nA ,C-T _AC ). Wherein T is _nA And T _AC Example 0.3.2.1.1 and example 0.3.2.1.10 are followed.

In another example 0.3.2.1.13, the time slot A2 is n+T _nA And C-T _AC I.e. a=f (n+t) _nA ,C-T _AC ). Wherein T is _nA And T _AC Example 0.3.2.1.1 and example 0.3.2.1.10 are followed.

In another example 0.3.2.1.14, the time slot A2 is R+T _RA And C-T _AC Most distant in time, i.e. a2=max #R+T _RA ,C-T _AC ). Wherein T is _RA And T _AC Example 0.3.2.1.2 and example 0.3.2.1.10 are followed.

In another example 0.3.2.1.15, the time slot A2 is R+T _RA And C-T _AC Is the earliest in time, i.e., a2=min (r+t _RA ,C-T _AC ). Wherein T is _RA And T _AC Example 0.3.2.1.2 and example 0.3.2.1.10 are followed.

In another example 0.3.2.1.16, the time slot A2 is R+T _RA And C-T _AC I.e. a2=f (r+t _RA ,C-T _AC ). Wherein T is _RA And T _AC Example 0.3.2.1.2 and example 0.3.2.1.10 are followed.

In another example 0.3.2.1.17, the time slot R is determined by the implementation of the UE itself.

In another example 0.3.2.1.18, the time slot R is configured or indicated by a higher layer.

In one example 0.3.2.2, the time slot B2 can be determined by one of the following examples.

In one example 0.3.2.2.1, time slot B2 is determined based on time slot m, e.g., time slot B2 is time T before time slot m _Bm I.e. b2=m-T _Bm Wherein T is _Bm The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _Bm The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _Bm May be in units of logical time slots that may be in a resource pool. In another example, T _Bm May be in units of logical time slots in the resource pool. In one example, T _Bm May depend on the UE capabilities. In one example, T _Bm May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _Bm May be determined by the implementation of the UE. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities.

In one example 0.3.2.2.2, time slot B2 may be determined based on time slot m, e.g., time slot B2 is time T prior to time slot m _Bm I.e. b2=m-T _Bm Wherein Alternatively, the +> Where K is the additional delay. Wherein (1)>Is a delay for sensing from the end of the last slot of the sensed sensing window to the slot where the reevaluation check occurs, +.>Is the time delay between the time slot where the reevaluation check occurs and time slot m. In one example, the time between the reevaluation check time slot and time slot m (where SL transmission will occur) is denoted as T ₃ Wherein in this example T ₃ Substitute->. In one example, a->And/orAnd/or K may depend on UE capabilities. In one example, a->And/or +.>And/or K may depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, a->And/or +.>And/or K may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a- >And/or +.>And/or K may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, a->And/or +.>And/or K may be in units of logical time slots that may be in the resource pool. In another example, a->And/or +.>And/or K may be in units of logical time slots in the resource pool. In one example, a->And/or +.>The corresponding parameters for the full sensing re-evaluation check may be the same. In another example, a->And/or +.>May be parameters separate from those used for full sensing re-evaluation checks. In another example, T _Bm May be determined by the implementation of the UE. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g., +.> Or (b)Wherein T is _Bm 、/>And K into the same time unit, e.g., logical time slots or physical time slots in the resource pool. />Depending on the subcarrier spacing, as shown in table 2.Depending on the subcarrier spacing, as shown in table 3.

In one example 0.3.2.2.3, time slot B2 is determined based on time slot C, e.g., time slot B2 is time T prior to time slot C _BC I.e. b2=c-T _BC Wherein T is _BC The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _BC The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _BC May be in units of logical time slots that may be in a resource pool. In another example, T _BC May be in units of logical time slots in the resource pool. In one example, T _BC May depend on the UE capabilities. In one example, T _BC May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _BC May be determined by the implementation of the UE. In another example, T _BC May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities.

In one example 0.3.2.2.4, time slot B2 is determined based on time slot C, e.g., time slot B2 is time T prior to time slot C _BC I.e. b2=c-T _BC WhereinWherein (1)>Is the delay for sensing from the end of the last slot of the sensed sensing window to the slot (e.g., slot C) where the reevaluation check occurs. In one example of this, in one implementation,may depend on the UE capabilities. In one example, a->May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, a- >The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->The units may be in physical time (e.g., ms) or in physical time slots. In another example, a->May be in units of logical time slots that may be in a resource pool. In another example, a->May be in units of logical time slots in the resource pool. In one example, a->The corresponding parameters for the full sensing re-evaluation check may be the same. In another example, a->May be a separate parameter from the parameter used for the full sensing re-evaluation check. In another example, T _BC May be determined by the implementation of the UE. In another example, T _BC May be determined by the implementation of the UE subject to the above constraints, e.g., T _BC ≤Wherein T is _BC And->To the same time unit, e.g. logical time slots or physical time slots in the resource pool. />Depending on the subcarrier spacing, as shown in table 2.

In one example 0.3.2.2.5, time slot B2 is determined based on time slot n, e.g., time slot B2 is time T after time slot n _nB I.e. b2=n+t _nB Wherein T is _nB Can be in a system gaugeThe in-range assignment and/or pre-configuration and/or updating by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _nB The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _nB May be in units of logical time slots that may be in a resource pool. In another example, T _nB May be in units of logical time slots in the resource pool. In one example, T _nB May depend on the UE capabilities. In one example, T _nB May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _nB May be determined by the implementation of the UE. In another example, T _nB May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities.

In one example 0.3.2.2.6, time slot B2 is determined based on time slot R, e.g., time slot B2 is time T after time slot n _RB I.e. b2=r+t _RB Wherein T is _RB The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _RB The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _RB May be in units of logical time slots that may be in a resource pool. In another example, T _RB May be in units of logical time slots in the resource pool. In one example, T _RB May depend on the UE capabilities. In one example, T _RB May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _RB May be determined by the implementation of the UE. In another example, T _RB May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities.

In one example 0.3.2.3, time slot C may be the time slot in which the reevaluation check occurs, and time slot C may be determined by one of the following examples.

In one example 0.3.2.3.1, time slot C is determined based on time slot m, e.g., time slot C is time T before time slot m _Cm I.e. c=m-T _Cm Wherein T is _Cm The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, the time between the reevaluation check time slot and time slot m (where SL transmission will occur) is denoted as T ₃ I.e. T _Cm ＝T ₃ . In one example, T _Cm The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _Cm May be in units of logical time slots that may be in a resource pool. In another example, T _Cm May be in units of logical time slots in the resource pool. In one example, T _Cm May depend on the UE capabilities. In one example, T _Cm May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _Cm May be determined by the implementation of the UE. In another example, T _Cm May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In another example, there is more than one re-evaluation check slot C determined by the implementation of the UE. In another example, there is more than one re-evaluation check time slot C determined by the implementation of the UE, where one of the time slots is preconfigured/configured and/or determined by T as specified in the system specification/by the capabilities of the UE _Cm And (5) determining.

In one example 0.3.2.3.2, time slot C is determined based on time slot m, e.g., time slot C is time T before time slot m _Cm I.e. c=m-T _Cm WhereinWherein (1)>Is the time delay between the time slot where the reevaluation check occurs and time slot m. In one illustrationIn the example, a->May depend on the UE capabilities. In one example, a->May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, a->The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->The units may be in physical time (e.g., ms) or in physical time slots. In another example, a->May be in units of logical time slots that may be in a resource pool. In another example, a->May be in units of logical time slots in the resource pool. In one example, a->The corresponding parameters for the full sensing re-evaluation check may be the same. In another example, a->May be parameters separate from those used for full sensing re-evaluation checks. In another example, T _Cm May be determined by the implementation of the UE. In another example, T _Cm May be determined by the implementation of the UE subject to the above constraints, e.g., +.>Wherein T is _Cm And->To the same time unit, e.g. logical time slots or physical time slots in the resource pool. In another example, there is more than one reevaluation check time slot C determined by the implementation of the UE, where one of the time slots is made up of T subject to the above constraints _Cm Determining, for example, that the nearest time slot satisfies +.>Or the nearest time slot satisfies-> Depending on the subcarrier spacing, as shown in table 3.

In one example 0.3.2.3.3, time slot C is determined based on time slot n, e.g., time slot C is time T after time slot n _nC I.e. c=n+t _nC Wherein T is _nC The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _nC The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _nC May be in units of logical time slots that may be in a resource pool. In another example, T _nC May be in units of logical time slots in the resource pool. In one example, T _nC May depend on the UE capabilities. In one example, T _nC May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _nC May be determined by the implementation of the UE. In another example, T _nC May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of higher layer configuration and/or not exceeding a UE capability dependent thresholdValues.

In one example 0.3.2.3.4, time slot C is determined based on time slot R, e.g., time slot C is time T after time slot R _RC I.e. c=r+t _RC Wherein T is _RC The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _RC The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _RC May be in units of logical time slots that may be in a resource pool. In another example, T _RC May be in units of logical time slots in the resource pool. In one example, T _RC May depend on the UE capabilities. In one example, T _RC May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _RC To be determined by the implementation of the UE. In another example, T _RC May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities.

In another example 0.3.3, as shown in fig. 19, a first continuous portion sensing window occurs before resource selection/reselection (e.g., in time slot R), as described in example 0.3.1, and a second continuous portion sensing window occurs before time slot m for each SL transmission or potential SL transmission in each time slot m. Time slot C may be associated with each SL transmission or potential SL transmission in time slot m, where time slot C may be a time slot for a re-evaluation check or preemption check of the SL transmissions in time slot m. Slot C may be determined according to an example/sub-example of example 0.3.2.3. The second consecutive partial sensing window may begin in time slot A2 and end in time slot B2. Therein, for each SL transmission or potential SL transmission in slot m and corresponding re-evaluation or preemption slot C, slot A2 may be determined according to the example/sub-example of example 0.3.2.1 and slot B2 may be determined according to the example/sub-example of example 0.3.2.2. In one example, more than one second consecutive partial sensing window may partially overlap, wherein a set of overlapping windows merge into a second consecutive partial sensing window that starts at an earliest start time of a second consecutive partial sensing window of the set of overlapping second consecutive partial sensing windows and ends at a latest end time of the second consecutive partial sensing windows of the set of overlapping second consecutive partial sensing windows. In another example, consecutive partial sensing windows do not overlap or partially overlap.

Fig. 20 illustrates yet another example of a continuous portion sensing operation 2000 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 2000 shown in fig. 20 is for illustration only.

In another example 0.3.4, as shown in fig. 20, the first consecutive partial sensing window occurs before resource selection/reselection (e.g., in slot R), and the second consecutive partial sensing window starting in slot A2 continues until slot B2, as described in example 0.3.1, with no further (re) transmissions that have been previously reserved. After an initial resource selection for SL resources that have not been previously signaled, a second consecutive partial sensing window starts in slot A2.

Wherein time slot A2 is determined based on one or more of the following as described in example 0.3.2.1: (1) Slot n, where SL transmission (resource selection/reselection procedure) is triggered by higher layers; (2) Time slot R where initial SL resource selection/reselection and candidate resource determination/reporting to higher layers occurs; (3) time slot m ₁ In which a first potential SL transmission (in one example, m ₁ Is thatI.e., the first candidate slot of the Y candidate slots); (4) Time slot C ₁ Wherein a re-evaluation check for the first potential SL transmission may occur.

The second consecutive partial sensing window continues until slot B2, which is determined by one of the following: (1) No more SL resources can be selected because the resource selection window ends and/or the packet delay budget will be exceeded; and (2) transmission of SL resources without additional reserved resources. This is shown in fig. 20. The second sensing window is atTime slot m of the first potential SL transmission ₁ Previously started and up to slot m of the last SL transmission without reserved resources _x Before. If the transmission of SL resources without additional reserved resources is in time slot m _x And the re-evaluation or preemption check of the corresponding resource is at time slot C _x The sensing window ends in slot B2. Wherein time slot B2 may be determined according to the example/sub-example of example 0.3.2.2, and time slot C _x May be determined in accordance with the example/sub-example of example 0.3.2.3.

In one example 0.3.4.1, the slot m _x When the SL (re) transmission in (B) reaches the maximum retransmission times, time slot m without additional reserved resources _x SL (re) transmission in (a) may occur.

In another example 0.3.4.2, the slot m _x When the SL (re) transmission in (B) reaches the maximum retransmission times, time slot m without additional reserved resources _x The SL (re) transmission in (b) may occur and there is no new transmission to reserve resources.

In another example 0.3.4.3, when no resources available in the resource selection window can be reserved for future SL transmissions, slot m with no additional reserved resources _x SL (re) transmission in (a) may occur.

In another example 0.3.4.4, when no resources available within the packet delay budget can be reserved for future SL transmissions, slot m with no additional reserved resources _x SL (re) transmission in (a) may occur.

Fig. 21 illustrates yet another example of a continuous portion sensing operation 2100 according to an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 2100 shown in fig. 21 is for illustration only.

In another example 0.3.5, as shown in fig. 21, the first consecutive partial sensing window occurs before resource selection/reselection (e.g., in slot R), and the second consecutive partial sensing window starting in slot A2 continues until slot B2, as described in example 0.3.1, with no further (re) transmissions. After an initial resource selection for SL resources that have not been previously signaled, a second consecutive partial sensing window starts in slot A2.

The second consecutive partial sensing window continues until slot B2, which is determined by: SL transmissions are positively acknowledged. The sensing window ends after a positive acknowledgement is received. This is shown in fig. 21. In this example, it may be implicitly or explicitly indicated that the slot of the positively acknowledged PSFCH resource is slot D. The sensing window ends in time slot B2, where b2=d+t _DB Wherein T is _DB The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _DB The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _DB May be in units of logical time slots that may be in a resource pool. In another example, T _DB May be in units of logical time slots in the resource pool. In one example, T _DB May depend on the UE capabilities. In one example, T _DB May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _DB May be determined by the implementation of the UE. In another example, T _DB May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In another example, T _DB Can be restricted byThe implementation of the UE determines, for example, not less than a threshold of a higher layer configuration and/or not less than a value that depends on the UE capabilities. In one alternative, the sensing ends after the UE receives an indication (implicit or explicit) of successful reception of a previous (re) transmission. In a second alternative, the sensing ends after the UE receives an indication of successful reception of the previous (re) transmission (implicit or explicit) and no new SL transmission (i.e. the last sequence in the sequence of packets).

Fig. 22 illustrates yet another example of a continuous portion sensing operation 2200 in accordance with an embodiment of the disclosure. The embodiment of the continuous portion sensing operation 2200 shown in fig. 22 is for illustration only.

In another example 0.3.6, as shown in fig. 22, the first consecutive partial sensing window occurs before resource selection/reselection (and candidate resource determination/reporting to higher layers) (e.g., in time slot R), and the second consecutive partial sensing window starting in time slot A2 continues until time slot B2, as described in example 0.3.1. After an initial resource selection for SL resources that have not been previously signaled, a second consecutive partial sensing window starts in slot A2.

The second consecutive partial sensing window continues until slot B2, which is determined by: SL transmissions with or without HRAQ-ACK feedback have a maximum number of retransmissions. The sensing window ends before the last HARQ retransmission. This is shown in fig. 22. Here, the In the example, the slot of the last HARQ retransmission is slot m _x . The sensing window ends in time slot B2, where b2=m _x -T _Bm Wherein T is _Bm The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MACCE signaling and/or L1 control signaling. Time slot B2 is prior to the time slot of the re-evaluation check or preemption check of the last HARQ retransmission, T _Bm Can be based in part onTo determine. In one example, T _Bm The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _Bm May be in units of logical time slots that may be in a resource pool. In another example, T _Bm May be in units of logical time slots in the resource pool. In one example, T _Bm May depend on the UE capabilities. In one example, T _Bm May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _Bm May be determined by the implementation of the UE. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities. In one alternative, the sensing ends before the UE transmits the last HARQ retransmission. In a second alternative, the sensing ends before the UE transmits the last HARQ retransmission and there is no new SL transmission (i.e., the last sequence in the sequence of packets).

Fig. 23 illustrates yet another example of a continuous portion sensing operation 2300 according to an embodiment of the disclosure. The embodiment of the continuous portion sensing operation 2300 shown in FIG. 23 is for illustration only.

In another example 0.3.7, as shown in fig. 23, the continuous portion sensing starts in slot a and ends before slot B, i.e., the continuous portion sensing window is within range [ a, B). Alternatively, the continuous partial sensing starts in time slot a and ends at or before time slot B, i.e., the continuous partial sensing window is within range [ a, B ]. The consecutive partial sensing window starting in slot a continues until slot B, where there is no further (re) transmission that has been previously reserved.

Wherein slot a is determined based on one or more of the following as described in example 0.3.1.1: (1) Slot n, where SL transmission (resource selection/reselection procedure) is triggered by higher layers; and (2) slot R, where initial SL resource selection/reselection and candidate resource determination/reporting to higher layers occurs.

The successive partial sensing window continues until slot B, which is determined by one of the following: (1) No more SL resources can be selected because the resource selection window ends and/or the packet delay budget will be exceeded; and (2) transmission of SL resources without additional reserved resources. This is shown in fig. 23. The sensing window is at slot m of last SL transmission without reserved resources _x Before ending. If the transmission of SL resources without additional reserved resources is in time slot m _x And the re-evaluation or preemption check of the corresponding resource is at time slot C _x The sensing window ends in slot B. Wherein time slot B may be determined according to the example/sub-example of example 0.3.2.2, and time slot C _x May be determined in accordance with the example/sub-example of example 0.3.2.3.

In one example 0.3.7.1, the slot m _x When the SL (re) transmission in (B) reaches the maximum retransmission times, time slot m without additional reserved resources _x SL (re) transmission in (a) may occur.

In another example 0.3.7.2, the slot m _x When the SL (re) transmission in (B) reaches the maximum retransmission times, time slot m without additional reserved resources _x The SL (re) transmission in (b) may occur and there is no new transmission to reserve resources.

In another example 0.3.7.3, when no resources available in the resource selection window can be reserved for future SL transmissions, slot m with no additional reserved resources _x SL (re) transmission in (a) may occur.

In another example 0.3.7.4, when no resources available within the packet delay budget can be reserved for future SL transmissions, slot m with no additional reserved resources _x SL (re) transmission in (a) may occur.

Fig. 24 illustrates yet another example of a continuous portion sensing operation 2400 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 2400 shown in fig. 24 is for illustration only.

In another example 0.3.8, as shown in fig. 24, the continuous portion sensing starts in slot a and ends before slot B, i.e., the continuous portion sensing window is within range [ a, B). Alternatively, the continuous partial sensing starts in time slot a and ends at or before time slot B, i.e., the continuous partial sensing window is within range [ a, B ]. The consecutive partial sensing window starting in slot a continues until slot B, where no further (re) transmissions are made.

The successive partial sensing window continues until slot B, which is determined by: positively acknowledged SL transmissions. The sensing window ends after a positive acknowledgement is received. This is shown in fig. 24. In this example, it may be implicitly or explicitly indicated that the slot of the positively acknowledged PSFCH resource is slot D. The sensing window ends in time slot B2, where b2=d+t _DB Wherein T is _DB The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _DB The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _DB May be in units of logical time slots that may be in a resource pool. In another example, T _DB Can be in a resource poolThe edit time slot is in units. In one example, T _DB May depend on the UE capabilities. In one example, T _DB May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _DB May be determined by the implementation of the UE. In another example, T _DB May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In another example, T _DB May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities. In one alternative, the sensing ends after the UE receives an indication (implicit or explicit) of successful reception of a previous (re) transmission. In a second alternative, the sensing ends after the UE receives an indication of successful reception of the previous (re) transmission (implicit or explicit) and no new SL transmission (i.e. the last sequence in the sequence of packets).

Fig. 25 illustrates yet another example of a continuous portion sensing operation 2500 in accordance with an embodiment of the present disclosure. The embodiment of the continuous portion sensing operation 2500 shown in fig. 25 is merely illustrative.

In another example 0.3.9, as shown in fig. 25, the continuous portion sensing starts in slot a and ends before slot B, i.e., the continuous portion sensing window is within range [ a, B). Alternatively, the continuous partial sensing starts in time slot a and ends at or before time slot B, i.e., the continuous partial sensing window is within range [ a, B ]. The consecutive partial sensing window starting in slot a continues until slot B, where no further (re) transmissions are made.

The successive partial sensing window continues until slot B, which is determined by: s with or without HRAQ-ACK feedbackL transmissions have the largest number of retransmissions. The sensing window ends before the last HARQ retransmission. This is shown in fig. 25. In this example, the slot of the last HARQ retransmission is slot m _x . The sensing window ends in time slot B2, where b2=m _x -T _Bm Wherein T is _Bm The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MACCE signaling and/or L1 control signaling. Time slot B2 is prior to the time slot of the re-evaluation check or preemption check of the last HARQ retransmission, T _Bm Can be based in part onTo determine. In one example, T _Bm The units may be in physical time (e.g., ms) or in physical time slots. In another example, T _Bm May be in units of logical time slots that may be in a resource pool. In another example, T _Bm May be in units of logical time slots in the resource pool. In one example, T _Bm May depend on the UE capabilities. In one example, T _Bm May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). In another example, T _Bm May be determined by the implementation of the UE. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a threshold of a higher layer configuration and/or not exceeding a value dependent on UE capabilities. In another example, T _Bm May be determined by the implementation of the UE subject to the above constraints, e.g., not less than a threshold of a higher layer configuration and/or not less than a value dependent on UE capabilities. In one alternative, the sensing ends before the UE transmits the last HARQ retransmission. In a second alternative, the sensing ends before the UE transmits the last HARQ retransmission and there is no new SL transmission (i.e., the last sequence in the sequence of packets).

In another example 0.3.10, it is believed that SL transmission will be in slot m _i And slot m _i+1 Occurs in time slot m _i And m _i+1 No other SL emissions occur in between. For time slot m _i Re-evaluation of emissions in (a)The sensing window of the estimation/preemption check is in time slot a _i And B _i Extending therebetween, i.e., [ A ] _i ，B _i ]Or [ A ] _i ，B _i ). For time slot m _i+1 The sensing window of the re-evaluation/preemption check of transmissions in time slot a _i+1 And B _i+1 Extending therebetween, i.e., [ A ] _i+1 ，B _i+1 ]Or [ A ] _i+1 ，B _i+1 ). In one example, if the sensing window is [ A ] _i ，B _i ]And [ A ] _i+1 ，B _i+1 ]Then A _i+1 ≥B _i . In another example, if the sensing window is [ A ] _i ，B _i ) And [ A ] _i+1 ，B _i+1 ) Then A _i+1 ≥B _i . In one example, if at m _i Determining m prior to re-evaluation/preemption check of (c) _i+1 Then, according to 0.3.2.2.2,and A is _i+1 At m _i+1 The first 31 logical slots start, thus A _i+1 ＝max(B _i +1,m _i+1 -31) (i.e.)>) Or A _i+1 ＝max(B _i ,m _i+1 -31) (i.e.)>). In another example, at time slot m _i Determining m during re-evaluation/preemption check of (c) _i+1 For m _i+1 Only when slot m has occurred _i Starting in the time slot after the time slot of the re-evaluation/preemption check, i.e. time slot +.>Thus (2)

In another example 0.3.11, as a variation of the sub-example of example 0.3 (i.e., examples 0.3.1 to 0.3.9), the first sensing window can begin before slot n, i.e., an amount T ₀ Is negative.

In examples and sub-examples of example 0.X, the size of the consecutive partial sensing window for sensing prior to the resource selection/reselection and/or re-evaluation check and/or preemption check may be pre-configured and/or updated in the system specification and/or by RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, the sensing window size may be in units of physical time (e.g., ms) or in units of physical time slots. In another example, the sensing window size may be in units of logical time slots that may be in the resource pool. In another example, the sensing window size may be in units of logical time slots in the resource pool. In one example, the sensing window size may depend on UE capabilities and/or power configuration settings (e.g., may be preconfigured and/or configured by higher layers). In one example, the sensing window size may depend on the subcarrier spacing of the SL bandwidth portion (e.g., SL channel). In another example, the sensing window size may be determined by an implementation of the UE. In another example, the sensing window size may be determined by the implementation of the UE subject to the above constraints, e.g., not less than the value of the higher layer configuration and/or not less than the value set depending on the UE capabilities and/or power configuration. In another example, the sensing window size may be determined by the implementation of the UE subject to the above constraints, e.g., not exceeding a value of a higher layer configuration and/or not exceeding a value set depending on the UE capabilities and/or power configuration. The power configuration setting is a preconfigured and/or configured value that determines the power consumption level for sensing, and thus may control a sensing parameter such as the sensing window size.

Table 4 shows the types of sensing that can be performed for initial resources/reselection and re-evaluation checks and preemption checks for resource pools with and without periodic reservations and for different traffic types (periodic or non-periodic).

TABLE 4

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In one embodiment of component 1, a resource pool with periodic reservations and UEs with periodic traffic are provided.

In one example, a UE is configured with a resource pool with periodic reservations. The UE is also configured to transmit periodic traffic. The periodicity of the periodic flow is T _per And each time slot.

In one example 1.1.1, T _per The number of time slots is given as the number of physical time slots.

In another example 1.1.2, T _per The time slots are given as corresponding physical time durations, e.g. in ms.

In another example 1.1.3, T _per The number of slots is given by the number of logical slots that can be in the resource pool.

In another example 1.1.4, T _per The time slots are given in the number of logical time slots in the resource pool.

The resource pool may be configured with one or more periodic reservation periods given by the higher layer parameter sl-resource reservation period list.

To identify candidate resources for resource selection/reselection for a UE operating in a power save mode, sensing may be performed (or not performed) based at least in part on one of: (1) Based on periodic partial sensing, wherein sensing is performed repeatedly at periodic intervals; (2) Continuous partial sensing, wherein the sensing is a single aperiodic sensing; and (3) random resource selection, wherein identifying candidate resources is performed without sensing.

In one example 1.2, the UE is advanced in slot n by a higher layer to make resource selection/reselection, e.g., to identify candidate resources for resource selection/reselection.

In one example 1.2.1, slot n is a physical slot number.

In another example 1.2.2, slot n corresponds to a logical slot index of a slot that may be in a resource pool。

In another example 1.2.3, slot n corresponds to a logical slot index of a slot in the resource pool。

In one example 1.2.4, the UE is provided or determines (1) a slot n for resource selection/reselection, and (2) a periodicity T for periodic traffic _per . The UE determines the resources/reselected slots for the future period as: for example, for a future period i (where i=1, 2, … …), the time slot for resource selection/reselection is n _i Wherein n is _i ＝n+i×T _per 。

The UE may determine a sensing occasion for future resource selection/reselection slots.

In one example 1.2.4.1, n is the physical slot number and T is provided or configured in the number of physical slots or in the physical duration scaled by the slot duration _per . Alternatively, T is provided in different time units _per And converts it into physical time slots.

In another example 1.2.4.2, n corresponds to a logical time slot that may be in a resource pool . If n is provided as a physical slot that is not among the slots that may be in the resource pool, the logical slot is the next (or previous) slot after (or before) slot n that may be in the resource pool. T'. _per Is the duration of a logical time slot that may be in the resource pool. Providing or configuring T 'in logical time slots that may be in a resource pool' _per Or provided or configured in different time units and converted into logical time slots that may be in the resource pool.

In another example 1.2.4.3, n corresponds to a logical time slot in the resource pool. If n is provided as a physical slot (or a logical slot that may be in the resource pool) and the physical slot is not in a slot that is located within the resource pool, then the logical slot is the next (or previous) slot after (or before) slot n that is located within the resource pool. T'. _per Is the duration of a logical time slot located within the resource pool. Providing or configuring T 'with logical time slots located within a resource pool' _per Or provided or configured in different time units and converted to logical time slots located within the resource pool. />

Fig. 26 illustrates an example of a sensing window 2600 for a UE according to an embodiment of the disclosure. The embodiment of the sensing window 2600 for the UE shown in fig. 26 is for illustration only.

Fig. 26 illustrates an example of a sensing window for a UE operating in a low power mode. For periodic traffic in period i, the UE is triggered by higher layers to be in slot n _i Resource selection/reselection is performed.

In one example, at least one of the following examples is associated with time slot n _i Is associated with the resource selection/reselection.

In one example, the periodic based partial sensing window, where the periodic based partial sensing window is at n _i -T _ps Beginning and at n _i -T _pe And (5) ending. Wherein T is _ps And T _pe The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. Alternatively or additionally, T _ps And T _pe May depend on the UE capabilities. Alternatively or additionally, T _ps And T _pe May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). Alternatively or additionally, T _ps And T _pe The determination may be made implicitly, for example, based on the partial sensing period, the index of the sensed period (sensing occasion), and the Y time slots selected in the resource selection window.

In another example, a continuous sensing window, wherein the continuous portion of the sensing window corresponds to n _i -T _CS Starting at time slot a and corresponding to n _i -T _ce Ending in slot B of (a). Wherein: (1) Time slot a and time slot B may be determined as described in the examples associated with fig. 8-25; and (2) alternatively, T _cs And T _ce The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. Alternatively or additionally, T _cs And T _ce May depend on the UE capabilities. Alternatively or additionally, T _cs And T _ce May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). Alternatively or additionally, T _cs And T _ce May depend on the implementation of the UE itself. Alternatively or additionally, T _cs And T _ce May depend on the implementation of the UE itself subject to the above configuration or constraints. It can be determined that the consecutive partial sensing window is in time slot n _i -T _cs Such that the earliest sensed slot is W logical slots (e.g., 31 logical slots) before the first logical slot in the resource selection window.

In yet another example, a resource selection window, wherein the resource selection window is at time n _i +T ₁ Beginning and at time n _i +T ₂ And (5) ending. Wherein T is ₁ And T ₂ Can be specified in the system specification and/or pre-provisioned by RRC signaling and/or MAC CE signaling and/or L1 control signaling First configured and/or updated. Alternatively or additionally, T ₁ And T ₂ May depend on the UE capabilities. Alternatively or additionally, T ₁ And T ₂ May depend on the subcarrier spacing of the SL bandwidth portion (e.g., the SL channel). Alternatively or additionally, T ₁ And T ₂ May depend on the implementation of the UE itself. Alternatively or additionally, T ₁ And T ₂ May depend on the implementation of the UE itself subject to the above configuration or constraints. The same resource selection window may be applicable to periodic based partial sensing and continuous partial sensing. Further, a set of identical candidate slots Y may be selected within the resource selection window for periodic based partial sensing and continuous partial sensing.

In one example 1.3.1, as illustrated in fig. 26, the periodic based partial sensing window and the continuous partial sensing window do not overlap for period i.

In yet another example 1.3.2, the periodic based partial sensing window and the continuous partial sensing window may partially overlap within period i, i.e., some of the sensed time slots may be included in both the partial sensing window and the continuous partial sensing window.

In one example 1.3.3, as illustrated in fig. 26, the periodicity-based partial sensing window and the continuous partial sensing window for periodic data within period i do not overlap with the periodicity-based partial sensing window and the continuous partial sensing window within any other period (e.g., period i+1).

In yet another example 1.3.4, the periodicity based partial sensing window and the consecutive partial sensing window for periodic data within period i may overlap with the periodicity based partial sensing window and/or the consecutive partial sensing window of another period, i.e., some of the sensed time slots may be suitable for resource selection/reselection in more than one period.

In one example 1.3.5, as illustrated in fig. 26, the consecutive partial sensing window of period i is at time slot n _i Ending before, e.g. consecutive partial sensing window in time slot n _i -T _ce End of (C), wherein T _ce At least large enough to take into account the delay of the UE processing the sensed time slots for resource selection. T (T) _ce May depend on UE capability and may depend on subcarrier spacing of the SL bandwidth portion (e.g., SL channel) as described in example 0.1. X. It can be determined that the consecutive partial sensing window is in time slot n _i -T _cs Such that the earliest sensed time slot is the first logical time slot in the resource selection window (e.g., the first logical time slot in a set of Y candidate time slots) The previous W logical time slots (e.g., 31 logical time slots).

In yet another example 1.3.6, the continuous portion sensing window may continue to slot n _i In addition, for example, the continuous partial sensing window may continue to time slot n for re-evaluation checking and preemption checking _i Outside of that. The continuous portion sensing window may end when the last (re) transmission associated with period i is transmitted or acknowledges that it has been received by one or more target UEs, as described in example 0.2.X or example 0.3. X.

In yet another example 1.3.7, consecutive portions of the sensing window of period i are in slot n _i Ending before, e.g. consecutive partial sensing window in time slot n _i -T _ce End of (C), wherein T _ce At least large enough to take into account the delay of the UE processing the sensed time slots for resource selection. T (T) _ce May depend on UE capability and may depend on subcarrier spacing of the SL bandwidth portion (e.g., SL channel). A second continuous partial sensing window is associated with each SL (re) transmission for the re-evaluation check and the preemption check associated in period i, as described in example 0.1. X.

In yet another example 1.3.8, the periodic based partial sensing window may continue to time slot n _i In addition, for example, the periodic based partial sensing window may continue to time slot n for re-evaluation checking and preemption checking _i Outside of that. When the last (re) transmission associated with period i is transmitted or acknowledges that it has been received by one or more target UEs At this point, the partial sensing window based on periodicity may end.

In one example 1.4.1, the UE may expect slot n for periodic traffic _i During this time slot, the SL transmission (resource selection/reselection procedure) is triggered by higher layers. Periodic based partial sensing and/or continuous partial sensing may be in time slot n _i Previously started and ended, and resource selection/reselection is at time slot n _i Occurs in the middle. The UE will need to be sufficiently early (at n _i -T _ps Before and at n _i -T _cs Before) SL transmissions triggered by higher layers (resource selection/reselection procedure) are expected to start periodic based partial sensing and continuous partial sensing, respectively. The following examples may apply, which may be based on system specifications and/or pre-configurations and/or higher layer configurations and/or implementations of the UE itself and/or based on conditions (e.g., SL traffic priority and/or HARQ-ACK error rate and/or CBR and/or CR and/or power configuration settings).

In one example 1.4.1.1, for time slot n _i The sensing of initial resource selection/reselection in (c) is based on periodic based partial sensing and continuous partial sensing.

In another example 1.4.1.2, for time slot n _i The sensing of initial resource selection/reselection in (c) is based on periodic based partial sensing.

In another example 1.4.1.3, for time slot n _i The sensing of initial resource selection/reselection in (c) is based on continuous partial sensing.

In another example 1.4.2, for periodic based traffic, SL transmission (resource selection/reselection procedure) is performed by the higher layer at time slot n _i Is triggered. Resource selection/reselection and candidate resource determination/reporting to higher layers is at time slot R _i Is a kind of medium. Wherein, time slot R _i In time slot n _i After that, the process is performed. Periodic based partial sensing and/or continuous partial sensing respectively at time slot R _i -T _ps And time slot R _i -T _cs Is started. If the UE is in slot n _i SL traffic cannot be expected before, slot R _i -T _ps And time slot R _i -T _cs Can be in time slot n _i After that, the process is performed. Alternatively, time slot R _i -T _ps And time slot R _i -T _cs The earliest time at which traffic can be expected by the UE within period i (which earliest time can be at slot n _i Before or after) it can be determined, for example, based on the time slot n _i Higher layer (e.g., application layer) signaling in the UE before. It can be determined that consecutive partial sensing windows are in time slot R _i -T _cs Such that the earliest sensed time slot is the first logical time slot in the resource selection window (e.g., the first logical time slot in a set of Y candidate time slots) The previous W logical time slots (e.g., 31 logical time slots). The following examples may apply, which may be based on system specifications and/or pre-configurations and/or higher layer configurations and/or implementations of the UE itself and/or based on conditions (e.g., SL traffic priority and/or HARQ-ACK error rate and/or CBR and/or CR and/or power configuration settings);

In one example 1.4.2.1, for slot R _i The sensing of initial resource selection/reselection in (c) is based on periodic based partial sensing and continuous partial sensing. When the UE performs periodic based partial sensing and continuous partial sensing, the UE uses the same resource selection window and a set of the same Y candidate slots within the resource selection window for periodic based partial sensing and continuous partial sensing.

In another example 1.4.2.2, for time slot R _i The sensing of initial resource selection/reselection in (c) is based on periodic based partial sensing.

In another example 1.4.2.3, for time slot R _i The sensing of initial resource selection/reselection in (c) is based on continuous partial sensing.

In another example 1.4.3, for periodic traffic, SL transmission (resource selection/reselection procedure) is performed by the higher layer at time slot n _i The resource selection is based on no sensing, i.e. random resource selection.

The selection between examples 1.4.1 or 1.4.2 and 1.4.3 may be based on system specifications and/or pre-configuration and/or higher layer configuration and/or implementation of the UE itself and/or based on conditions (e.g. SL traffic priority and/or HARQ-ACK error rate and/or CBR and/or CR and/or power configuration settings).

In one example 1.5, for the re-evaluation check and the preemption check, one of the following examples may apply, which may be based on system specifications and/or pre-configurations and/or higher layer configurations and/or implementations of the UE itself and/or based on conditions (e.g., SL traffic priority and/or HARQ-ACK error rate and/or CBR and/or CR and/or power configuration settings).

In one example 1.5.1, there is no re-evaluation check and/or preemption check.

In another example 1.5.2, the sensing for re-evaluating the check and/or preemption check is based on periodic based partial sensing and continuous partial sensing.

In another example 1.5.3, the sensing for re-evaluating the check and/or preemption check is based on periodic based partial sensing.

In another example 1.5.4, the sensing for re-evaluating the check and/or preemption check is based on continuous portion sensing.

In one embodiment of component 2, a resource pool with periodic reservations and UEs with aperiodic traffic are provided.

In another example 2.1, the UE is configured with a resource pool with periodic reservations. The UE is also configured to transmit aperiodic traffic. Aperiodic flow occurs at irregular time intervals.

In one example, before SL data is available for transmission, the UE recognizes that it will transmit in future time slots (e.g., through application layer signaling): (1) Let slot n be the slot selected/reselected or sensed by the higher layer trigger resource. This is a future SL transmission that the UE is aware that data will become available in slot m; (2) Making slot m available for transmission for SL dataIs allocated to the time slot of the mobile station. In one example, slot m is the first candidate slot of the Y candidate slots, i.e., m=The method comprises the steps of carrying out a first treatment on the surface of the And (3) let slot R be the slot for resource selection/reselection and candidate resource determination/reporting to higher layers. />

In one example 2.1.1, the UE may be configured with a period T in slot n _a Wherein T is _a Is the time after slot n when the SL data becomes available for SL transmission.

In another example 2.1.2, the UE may be configured with slot m in slot n, where slot m is the time slot when SL data becomes available for SL transmission.

In one example, m=n+t _a 。

Fig. 27 illustrates an example of a sensing window 2700 when a UE is triggered according to an embodiment of the present disclosure. The embodiment of the sensing window 2700 when the UE is triggered shown in fig. 27 is for illustration only.

In one example 2.2.1, as illustrated in fig. 27, when the UE is triggered by a higher layer in slot n: (1) It goes from time slot n+1 to time slotPerforming sensing, alternatively, the UE is from slot n+t ₀ To time slot->Performing sensing, wherein T ₀ The configuration and/or updating may be specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling, see example 0.3.X. It can be determined that the consecutive partial sensing window is in slot n+T ₀ Such that the earliest sensed slot is W logical slots (e.g., 31 logical slots) before the first logical slot in the resource selection window; (2) It is in time slot m-T ₁ Performs candidate resource selection, i.e., r=m-T ₁ The method comprises the steps of carrying out a first treatment on the surface of the (3) Candidate resource selection window is from time slot m to time slot m+T ₂ -T ₁ Starting in the middle; (4) Which is a kind ofIn (I)>Is the sensing delay, which is the time between the end of the sensing window and the resource selection/reselection. T (T) ₁ Is the time between the resource selection/reselection and the beginning of the resource selection window. T (T) ₂ Is the time between the resource selection/reselection and the end of the resource selection window. T (T) ₂ -T ₁ Is the length of the resource selection window; and (5) in this example, < +.>Alternatively, the + >

In another example 2.2.2, as illustrated in fig. 27, when the UE is triggered by a higher layer in slot n: (1) It goes from time slot n+1 to time slot n+T _a -T _proc,0 -T ₁ Performing sensing, alternatively, the UE is from slot n+t ₀ To time slotPerforming sensing, wherein T ₀ Pre-configuration and/or updating may be specified in the system specification and/or by RRC signaling and/or MAC CE signaling and/or L1 control signaling, see example 0.3.X; (2) It is in time slot n+T _a -T ₁ In performing candidate resource selection, i.e. r=n+t _a -T ₁ The method comprises the steps of carrying out a first treatment on the surface of the (3) Candidate resource selection window is in time slot n+T _a To time slot n+T _a +T ₂ -T ₁ Starting in the middle; (4) Wherein, the liquid crystal display device comprises a liquid crystal display device,is the sensing delay, which is the time between the end of the sensing window and the resource selection/reselection. T (T) ₁ Is the time between the resource selection/reselection and the beginning of the resource selection window. T (T) ₂ Is the time between the selection/reselection of a resource and the end of the resource selection window。T ₂ -T ₁ Is the length of the resource selection window; and (5) in this example,alternatively, the +>

Fig. 28 illustrates another example of a sensing window 2800 when a UE is triggered according to an embodiment of the present disclosure. The embodiment of the sensing window 2800 shown in fig. 28 when the UE is triggered is for illustration only.

In another example 2.2.3, as illustrated in fig. 28, when the UE is triggered by a higher layer in slot n: (1) It goes from time slot n+1 to time slot n+T _sen Performing sensing, alternatively, the UE is from slot n+t ₀ To time slot n+T _sen Performing sensing, wherein T ₀ Pre-configuration and/or updating may be specified in the system specification and/or by RRC signaling and/or MAC CE signaling and/or L1 control signaling, see example 0.3.X; (2) It is in time slotPerforms candidate resource selection and candidate resource determination/reporting to higher layers, i.e./>(3) Candidate resource selection window is in time slotTo->Is started. In one example, a->Alternatively, the +>(4) Wherein T is _sen Is the sensing windowSize of the product. T (T) _a Is the time that SL data is available and is thus the earliest time that the resource selection window can begin. />Wherein T is _b Is a minimum sensing window time specified in the system specification and/or preconfigured and/or configured and/or updated by RRC signaling and/or MAC CE signaling and/or L1 control signaling. For example T _sen May be 31 slots; (5) In a variant example of a resource selection window for starting in slot m, the sensing window starts in the later of slots m-W (e.g., w=31) or slot n+1; and (6) wherein->Is the sensing delay, which is the time between the end of the sensing window and the resource selection/reselection. T (T) ₁ Is the time between the resource selection/reselection and the beginning of the resource selection window. In one example, a->T ₂ Is the time between the resource selection/reselection and the end of the resource selection window. T (T) ₂ -T ₁ Is the length of the resource selection window.

In yet another example, the UE may perform periodic based partial sensing after triggering SL transmission (resource selection/reselection procedure) in slot n by the higher layer and before initial resource selection/reselection and candidate resource determination/reporting to the higher layer in slot R.

In yet another example 2.2.4, the periodic based partial sensing window and/or the continuous partial sensing window may continue outside of the time slot R, e.g., the periodic based partial sensing window and/or the continuous partial sensing window may continue outside of the time slot R for re-evaluation checking and preemption checking. The periodic based partial sensing window and/or the continuous partial sensing window may end when the last (re) transmission is transmitted or acknowledges that it has been received by one or more target UEs.

In another example 2.3.1, for non-periodic traffic, SL transmission (resource selection/reselection procedure) is triggered by higher layers in slot n. The resource selection/reselection and candidate resource determination/reporting to higher layers is in slot R. Wherein the slot R follows the slot n. Periodic based partial sensing and/or continuous partial sensing at time slots R-T, respectively _ps And/or time slots R-T _cs Is started. If the UE cannot expect SL traffic before slot n, slot R-T _ps And time slots R-T _cs May follow slot n. The UE may expect SL traffic in slot n if signaled, for example, by a higher layer (e.g., application layer) of the UE. Time slots R-T _ps And time slots R-T _cs The earliest time that the UE may expect for traffic for aperiodic transmission (which may be before or after slot n). The following examples may apply, which may be based on system specifications and/or pre-configurations and/or higher layer configurations and/or implementations of the UE itself and/or based on conditions (e.g., SL traffic priority and/or HARQ-ACK error rate and/or CBR and/or CR and/or power configuration settings).

In one example 2.3.1.1, the sensing for initial resource selection/reselection in time slot R is based on periodic based partial sensing and continuous partial sensing. When the UE performs periodic based partial sensing and continuous partial sensing, the UE uses the same resource selection window and a set of the same Y candidate slots within the resource selection window for periodic based partial sensing and continuous partial sensing.

In another example 2.3.1.2, the sensing for initial resource selection/reselection in time slot R is based on periodic based partial sensing.

In another example 2.3.1.3, the sensing for initial resource selection/reselection in time slot R is based on continuous partial sensing.

In another example 2.3.2, for non-periodic traffic, SL transmission (resource selection/reselection procedure) is triggered by the higher layer in time slot n, the resource selection being based on no sensing, i.e. random resource selection.

The selection between examples 2.3.1 and 2.3.2 may be based on system specifications and/or pre-configurations and/or higher layer configurations and/or implementation of the UE itself and/or based on conditions (e.g. SL traffic priority and/or HARQ-ACK error rate and/or CBR and/or CR and/or power configuration settings).

In one example 2.4, for the re-evaluation check and the preemption check, one of the following examples may apply, which may be based on system specifications and/or pre-configurations and/or higher layer configurations and/or implementations of the UE itself and/or based on conditions (e.g., SL traffic priority and/or HARQ-ACK error rate and/or CBR and/or CR and/or power configuration settings).

In one example 2.4.1, there is no re-evaluation check and/or preemption check.

In another example 2.4.2, the sensing for re-evaluating the check and/or preemption check is based on periodic based partial sensing and continuous partial sensing.

In another example 2.4.3, the sensing for re-evaluating the check and/or preemption check is based on periodic based partial sensing.

In another example 2.4.4, the sensing for re-evaluating the check and/or preemption check is based on continuous portion sensing.

In one embodiment of component 3, a resource pool without periodic reservation and a UE with periodic traffic are provided.

In one example 3.1, the UE is configured with a pool of resources that is not reserved periodically. The UE is also configured to transmit periodic traffic. The periodicity of the periodic flow is N _per The time slots are: (1) In one example, N _per The number of time slots is given as the number of physical time slots; (2) In another example, N _per The time slots are given as corresponding physical time durations, e.g. in ms; and (3) in another example, N _per The number of slots is given by the number of logical slots that can be in the resource pool.

In another example, N _per The time slots are given in the number of logical time slots in the resource pool.

The example of component 1 applies to this component except that periodic based partial sensing is not present.

In one example 3.2.1, the UE may expect slot n for periodic traffic _i During this time slot, the SL transmission (resource selection/reselection procedure) is triggered by higher layers. Successive partial sensing may be at time slot n _i Previously started and ended, and resource selection/reselection is at time slot n _i Occurs in the middle. The UE will need to be sufficiently early (at n _i -T _cs Before) SL transmissions triggered by higher layers (resource selection/reselection procedure) are expected to perform successive partial sensing.

In one example 3.2.1.1, for slot n _i The sensing of initial resource selection/reselection in (c) is based on continuous partial sensing.

In another example 3.2.2, for periodic traffic, SL transmission (resource selection/reselection procedure) is performed by the higher layer at time slot n _i Is triggered. Resource selection/reselection and candidate resource determination/reporting to higher layers is at time slot R _i Is a kind of medium. Wherein, time slot R _i In time slot n _i After that, the process is performed. Successive partial sensing at time slot R _i -T _cs Is started. If the UE is in slot n _i SL traffic cannot be expected before, slot R _i -T _cs Can be in time slot n _i After that, the process is performed. Alternatively, time slot R _i -T _cs The earliest time at which traffic can be expected by the UE within period i (which earliest time can be at slot n _i Before or after) it can be determined, for example, based on the time slot n _i Higher layer (e.g., application layer) signaling in the UE before. Alternatively or additionally, it may be determined that consecutive partial sensing windows are in time slot R _i -T _cs Such that the earliest sensed slot is W logical slots (e.g., 31 logical slots) before the first logical slot in the resource selection window.

In one example 3.2.2.1, for slot R _i The sensing of initial resource selection/reselection in (c) is based on continuous partial sensing.

In another example 3.2.3, for periodic traffic, SL transmissions (resource selection/reselection procedure) are timed by higher layersGap n _i The resource selection is based on no sensing, i.e. random resource selection.

The selection between examples 3.2.1 or 3.2.2 and 3.2.3 may be based on system specifications and/or pre-configuration and/or higher layer configuration and/or implementation of the UE itself and/or based on conditions (e.g. SL traffic priority and/or HARQ-ACK error rate and/or CBR and/or CR and/or power configuration settings).

In one example 3.3, for the re-evaluation check and the preemption check, one of the following examples may apply, which may be based on system specifications and/or pre-configuration and/or higher layer configuration and/or implementation of the UE itself and/or based on conditions (e.g., SL traffic priority and/or HARQ-ACK error rate and/or CBR and/or CR and/or power configuration settings);

in one example 3.3.1, there is no re-evaluation check and/or preemption check.

In another example 3.3.2, the sensing for re-evaluating the check and/or preemption check is based on continuous portion sensing.

In one embodiment of component 4, a resource pool without periodic reservation and a UE with aperiodic traffic are provided.

In one example 4.1, the UE is configured with a pool of resources that is not reserved periodically. Aperiodic flow occurs at irregular time intervals.

The example of component 2 applies to this component except that periodic based partial sensing is not present.

In another example 4.2.1, for non-periodic traffic, SL transmission (resource selection/reselection procedure) is triggered by higher layers in slot n. The resource selection/reselection and candidate resource determination/reporting to higher layers is in slot R. Wherein the slot R follows the slot n. Successive partial sensing in time slot R-T _cs Is started. If the UE cannot expect SL traffic before slot n, slot R-T _cs May follow slot n. The UE may expect SL traffic in slot n if signaled, for example, by a higher layer (e.g., application layer) of the UE. Time slots R-T _cs Earliest traffic that can be expected by UE for aperiodic transmissionThe time (the earliest time may be before or after time slot n). Alternatively or additionally, it may be determined that consecutive partial sensing windows are in time slots R-T _cs Such that the earliest sensed slot is W logical slots (e.g., 31 logical slots) before the first logical slot in the resource selection window.

In one example 4.2.1.1, the sensing for initial resource selection/reselection in slot R is based on continuous partial sensing.

In another example 4.2.2, for non-periodic traffic, SL transmission (resource selection/reselection procedure) is triggered by the higher layer in time slot n, the resource selection being based on no sensing, i.e. random resource selection.

The selection between examples 4.2.1 and 4.2.2 may be based on system specifications and/or pre-configurations and/or higher layer configurations and/or implementation of the UE itself and/or based on conditions (e.g. SL traffic priority and/or HARQ-ACK error rate and/or CBR and/or CR and/or power configuration settings).

In one example 4.3, for the re-evaluation check and the preemption check, one of the following examples may apply, which may be based on system specifications and/or pre-configurations and/or higher layer configurations and/or implementation of the UE itself and/or based on conditions (e.g., SL traffic priority and/or HARQ-ACK error rate and/or CBR and/or CR and/or power configuration settings).

In one example 4.3.1, there is no re-evaluation check and/or preemption check.

In another example 4.3.2, the sensing for re-evaluating the check and/or preemption check is based on continuous portion sensing.

In one embodiment of component 1A, aperiodic transmissions in a resource pool without periodic reservations in a mode 2 resource pool are provided.

Mode 2 resource pools without periodic reservation do not enable sl-multireservaresource.

sl-MultiReserveResource: whether to allow reservation of side link resources for initial transmission of TBs by SCIs associated with different TBs is indicated based on the sensing and resource selection procedures.

The UE (resource selection/reselection procedure) is transmitted aperiodically (i.e., P _{rsvp_TX} =0) is triggered in slot n.

In one example a1.1, the UE does not perform sensing in a logical slot immediately preceding slot n.

Fig. 29 illustrates yet another example of a sensing operation 2900 according to an embodiment of the disclosure. The embodiment of the sensing operation 2900 shown in fig. 29 is for illustration only.

In one example A1.1.1, the UE starts sensing in the first logical slot at or after slot n, as illustrated in fig. 29. Representing the logical time slot as having an indexIs allocated to the logical time slot of the mobile station. The last time slot of the sensing window is at time slot +.>The following M-1 logical time slots, which are denoted with the index +. >I.e. the total number of logical time slots in the sensing window is M. For example, a->M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example. The UE selects Y ' consecutive logical slots for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. The first time slot selected for resource selection is shown with index +.>Wherein logical time slot +_>At least after the end of the sensing window +.> Wherein->Andin units of physical time (e.g., milliseconds) or in units of physical time slots. />Is at the end of the sensing window (e.g., +.>) Time between time slots selected for resources, e.g. < ->As can be shown in table 2.Is at the beginning of the time slot of resource selection and the window for side link resource selection (e.g.)>) Time between, e.g. ->As can be shown in table 3. />And/or +.>The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example of this, in one implementation, And/or +.>May depend on the UE capabilities. In FIG. 29, the period between time slot R and the last logical time slot of the sensing window may be greater than +.>Because not all physical slots are logical slots.

Fig. 30 illustrates yet another example of a sensing operation 3000 according to an embodiment of the present disclosure. The embodiment of the sense operation 3000 shown in fig. 30 is for illustration only.

In one example A1.1.2, the UE is at least T at or after slot n _sen-proc The sensing starts in the first logical slot (the minimum time required for the UE to start sensing when or after being triggered in slot n), as shown in fig. 30, where T _sen-proc The units may be physical time (e.g., milliseconds) or physical time slots. T (T) _sen-proc The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _sen-proc May depend on the UE capabilities. Representing the logical time slot as having an indexIs allocated to the logical time slot of the mobile station. The last time slot of the sensing window is at time slot +.>After M-1 logical time slots, this is denoted with the index +.>I.e. the total number of logical time slots in the sensing window is M. For example, a->M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example. The UE selects Y ' consecutive logical slots for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. The first time slot selected for resource selection is denoted logical time slot +.>Wherein logical time slot->At least after the end of the sensing window +.>Wherein->And->In units of physical time (e.g., milliseconds) or in units of physical time slots. />Is at the end of the sensing window (e.g.,) Time between time slots selected for resources, e.g. < ->As can be shown in table 2. />Is at the beginning of the time slot of resource selection and the window for side link resource selection (e.g.)>) Time between (I) and (II)>As can be shown in table 3. />And/or +.>The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->And/or +.>May depend on the UE capabilities. In fig. 30, the period of time between the slot R and the last logical slot of the sensing window may be greater thanBecause not all physical slots are logical slots.

Fig. 31 illustrates yet another example of a sensing operation 3100 according to an embodiment of the disclosure. The embodiment of the sensing operation 3100 shown in fig. 31 is for illustration only.

Fig. 32 illustrates yet another example of a sensing operation 3200 according to an embodiment of the present disclosure. The embodiment of the sensing operation 3200 shown in fig. 32 is for illustration only.

In one example A1.1.3, the UE is at or time slot nThe sensing begins in the first logical time slot after the slot, as shown in fig. 31 and 32. Representing the logical time slot as having an indexIs allocated to the logical time slot of the mobile station. The first time slot selected for resource selection is shown with index +.>Wherein logical time slot +_>Is in a logic time slotAfter M logical time slots, e.g.>M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example. The last slot of the sensing window (e.g. +.>) Ratio->Early (either before it or earlier than it)Wherein->And->In units of physical time (e.g., milliseconds) or in units of physical time slots. />Is at the end of the sensing window (e.g., +.>) The time between time slots selected for the resource, e.g.,as can be shown in table 2. />Is at the beginning of the time slot of resource selection and the window for side link resource selection (e.g.) >) Time between, e.g. ->As can be shown in table 3. />And/or +.>The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->And/or +.>May depend on the UE capabilities. In one example, the UE selects +_ in logical slot>The first Y ' consecutive logical slots are used for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min Can be in system specificationIs (pre) configured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In fig. 31 and 32, the period between time slot R and the last logical time slot of the sensing window may be greater than +.>Because not all physical slots are logical slots.

Fig. 33 illustrates yet another example of a sensing operation 3300 according to an embodiment of the disclosure. The embodiment of the sense operation 3300 shown in fig. 33 is for illustration only.

Fig. 34 illustrates yet another example of a sensing operation 3400 according to an embodiment of the present disclosure. The embodiment of the sensing operation 3400 shown in fig. 34 is for illustration only.

In one example A1.1.4, the UE is at least T at or after slot n _sen-proc The sensing starts in the first logical slot (the minimum time required for the UE to start sensing after being triggered in slot n), as shown in fig. 33 and 34, where T _sen-proc The units may be physical time (e.g., milliseconds) or physical time slots. T (T) _sen-proc May be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example. In one example, T _sen-proc May depend on the UE capabilities. Representing a first logical time slot of a sensing window as having an indexIs allocated to the logical time slot of the mobile station. The first time slot selected for resource selection is represented as having an indexWherein logical time slot +_>Is in the slot->The next M logical time slots, for example,m may be specified in the system specification and/or configured or updated (in advance) by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. The last slot of the sensing window (e.g. +.>) Ratio->Early (or before or earlier than it)/(early)>Wherein (1)>And->In units of physical time (e.g., milliseconds) or in units of physical time slots. />Is at the end of the sensing window (e.g., +.>) Time between time slots selected for resources, e.g. < ->As can be shown in table 2. />Is at the beginning of the time slot of resource selection and the window for side link resource selection (e.g.)>) Time between, e.g. - >As can be shown in table 3.And/or +.>The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->And/or +.>May depend on the UE capabilities. The UE selects to be slot +.>The first Y ' consecutive logical slots are used for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In fig. 33 and 34, the period of time between the slot R and the last logical slot of the sensing window may be greater thanBecause not all physical slots are logical slots.

In one example A1.1.5, the windows (slots) for resource selection in examples A1.1.1, A1.1.2, A1.1.3, and A1.1.4 include: (1) First logical time slot determined as described in examples A1.1.1, A1.1.2, A1.1.3, and A1.1.4The method comprises the steps of carrying out a first treatment on the surface of the (2) Up to logical time slot->M consecutive logical time slots, wherein +.>Is M or 31 logical time slots after the end of the sensing window (i.e. if +.>Is the last slot of the sensing window, < +.> M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example; (3) If m is <Y' _min The UE may choose to be +.>Additional Y '-m time slots (Y'. Gtoreq.Y 'after and before the end of the resource selection window' _min ) Wherein the end of the resource selection window is defined by n+T ₂ Given, and as described in section 8.1.4 of TS 38.214, T is determined ₂ . In time slot->The additional time slots thereafter need not be contiguous; and (4) if m.gtoreq.Y' _min The index of the last logical slot for resource selection is then at least made of + ->-Y' _min -1. Logical time slot in time slot->Is then continuous (in->Thereafter and including Y 'of the time slot' _min Consecutive logical time slots).

In one example a1.2, the UE performs sensing in a logical slot immediately preceding and up to slot n (if slot n is a logical slot). Assume that the first logical slot before slot n where the UE has the association sensing result is the slot。

Fig. 35 illustrates yet another example of a sensing operation 3500 in accordance with an embodiment of the disclosure. The embodiment of the sensing operation 3500 shown in fig. 35 is for illustration only.

In one example A1.2.1, as illustrated in fig. 35, the number of consecutive sensing slots up to slot n is less than M that the UE continues to sense after slot n. The last slot of the sensing window is the in-slotThe following M-1 logical time slots, expressed as +. >I.e. the total number of logical time slots in the sensing window is M. M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example. The UE may perform resource selection of the candidate set in slot n. The UE selects Y ' consecutive logical slots for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MACCE signaling and/or L1 control signaling. The first time slot selected for resource selection is denoted logical time slot +.>Wherein logical time slot->At least after the end of the sensing window +.>Wherein->And->In units of physical time (e.g., milliseconds) or in units of physical time slots. />Is at the end of the sensing window (e.g., +.>) Time between time slots selected for resources, e.g. < ->As can be shown in table 2. />Is at the beginning of the time slot of resource selection and the window for side link resource selection (e.g.)>) Time between, e.g. ->As can be shown in table 3. />And/or +.>May be specified in the system specification and/or by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling to (pre) configure or update. In one example, a->And/or +.>May depend on the UE capabilities. In FIG. 35, the period between time slot R and the last logical time slot of the sensing window may be greater than +.>Because not all physical slots are logical slots.

Fig. 36 illustrates yet another example of a sensing operation 3600 in accordance with an embodiment of the present disclosure. The embodiment of the sensing operation 3600 shown in fig. 36 is for illustration only.

In one example A1.2.2, as illustrated in fig. 36, the number of consecutive sensing slots up to slot n is greater than or equal to M. The sensing window is in time slotBefore ending. The sensing window duration is M logical time slots. The last logical slot of the sensing window is denoted as slot +.>. M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example. The UE selects Y ' consecutive logical slots for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. The first time slot selected for resource selection is denoted logical time slot +. >Wherein logical time slot->Is at least +.>. Wherein (1)>And->In units of physical time (e.g., milliseconds) or in units of physical time slots. />Is at the end of the sensing window (e.g., +.>) Time between time slots selected for resources, e.g. < ->As can be shown in table 2. />Is at the beginning of the time slot of resource selection and the window for side link resource selection (e.g.)>) Time between, e.g. ->As can be shown in table 3. />And/or +.>May be specified in a system specification and/or by a higher layerRRC signaling and/or MAC CE signaling and/or L1 control signaling to (pre) configure or update. In one example, a->And/or +.>May depend on the UE capabilities. In fig. 36, the period between the time slot R and the last logical time slot of the sensing window may be greater than +.>Because not all physical slots are logical slots.

In one example A1.2.3, the index of the first logical slot in the set of slots that is continuously sensed before slot n is. The first time slot selected for resource selection is denoted logical time slot +.>In which the logical time slotsIs the larger of the following cases: (1) case 1: fig. 37 and 38: in time slot- >The next M logical time slots, for example,wherein->And (2) case 2: fig. 39 and 40: in time slotAt or after the time slotStarting.

Fig. 37 illustrates yet another example of a sensing operation 3700 in accordance with an embodiment of the disclosure. The embodiment of the sensing operation 3700 shown in fig. 37 is for illustration only.

Fig. 38 illustrates yet another example of a sensing operation 3800 according to an embodiment of the disclosure. The embodiment of the sensing operation 3800 shown in fig. 38 is for illustration only.

Fig. 39 illustrates yet another example of a sensing operation 3900 according to an embodiment of the disclosure. The embodiment of the sense operation 3900 shown in fig. 39 is for illustration only.

Fig. 40 illustrates yet another example of a sensing operation 4000 according to an embodiment of the present disclosure. The embodiment of the sensing operation 4000 shown in fig. 40 is for illustration only.

M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example: (1) For case 1, the start of the sensing window isThe last time slot of the sensing window is denoted e.g. +.>Wherein->Ratio->Early (or before or earlier than it)/(early)>And (2) for case 2, the starting ratio time slots of the M logical time slots Early, e.g.)>The last time slot of the sensing window is denoted e.g. -/>Wherein, the method comprises the steps of, wherein,ratio->Early (or before or earlier than it)/(early)>

Wherein, the liquid crystal display device comprises a liquid crystal display device,and->In units of physical time (e.g., milliseconds) or in units of physical time slots.Is at the end of the sensing window (e.g., +.>) Time between time slots selected for resources, e.g. < ->As can be shown in table 2. />Is at the beginning of the time slot of resource selection and the window for side link resource selection (e.g.)>) Time between, e.g. ->As can be shown in table 3. />And/or +.>The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->And/or +.>May depend on the UE capabilities.

In case 1 and case 2, the UE selects to be in time slotsThe first Y ' consecutive logical slots are used for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In fig. 37, 38, 39 and 40, the period between time slot R and the last logical time slot of the sensing window may be greater than +. >Because not all physical slots are logical slots. />

Fig. 37 illustrates example A1.2.3 case 1, fig. 38 illustrates example A1.2.3 case 1, fig. 39 illustrates example A1.2.3 case 2, and fig. 40 illustrates example A1.2.3 case 2.

In one example A1.2.4, the windows (slots) for resource selection in examples A1.2.1, A1.2.2, and A1.2.3 include: (1) First logical time slot determined as described in examples A1.2.1, A1.2.2, and A1.2.3The method comprises the steps of carrying out a first treatment on the surface of the (2) Up to logical time slot->M consecutive logical time slots, wherein +.>Is M or 31 logical time slots after the end of the sensing window (i.e. if +.>Is the last slot of the sensing window, then M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example; (3) If m is<Y' _min The UE may choose to be +.>Additional Y '-m time slots (Y'. Gtoreq.Y 'after and before the end of the resource selection window' _min ) Wherein the end of the resource selection window is defined by n+T ₂ Given, and T is determined as described in TS 38.214 ₂ . In time slot->The additional time slots thereafter need not be contiguous; and (4) if m.gtoreq.Y' _min The index of the last logical slot for resource selection is then at least made of + ->Given. Logical time slot in time slot->Is then continuous (in->Thereafter and including Y 'of the time slot' _min Consecutive logical time slots). In one example a1.3, the UE does not perform sensing in a logical slot immediately preceding slot n. The UE selects the first slot +.>. Fig. 41 illustrates yet another example of a sensing operation 4100 according to an embodiment of the disclosure. The embodiment of the sensing operation 4100 shown in fig. 41 is for illustration only. In one example A1.3.1, the UE can begin sensing in a first logical slot after slot n, as illustrated in fig. 41. The end of the sensing window is in logical slot +.>In the logic time slot in time slot +.>At least beforeEnding (or starting). />Is at the end of the sensing window (e.g., +.>) Time between time slots selected for resources, e.g. < ->As can be shown in table 2. />Is the opening of a window between a time slot for resource selection and a time slot for side link resource selectionStart (e.g.)>) Time between, e.g. ->As can be shown in table 3. />And->In units of physical time (e.g., milliseconds) or in units of physical time slots. / >And/orThe configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->And/or +.>May depend on the UE capabilities. The start of the sensing window is M-1 logical slots before the last slot of the sensing window. The start of the sensing window is denoted +.>. Thus (S)>The total number of logical time slots in the sensing window is M. M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, in one example M is 31Time slots.

Selection ofSo that->At or after time slot n.

The UE selects Y ' consecutive logical slots for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In FIG. 41, the period of time between time slot R and the last logical time slot of the sensing window may be greater thanBecause not all physical slots are logical slots.

Fig. 42 illustrates yet another example of a sensing operation 4200 according to an embodiment of the disclosure. The embodiment of the sensing operation 4200 shown in fig. 42 is for illustration only.

In one example A1.3.2, the UE can be at least T at or after slot n _sen-proc The sensing starts in the first logical slot (the minimum time required for the UE to start sensing after being triggered in slot n), as shown in fig. 42, where T _sen-proc The units may be physical time (e.g., milliseconds) or physical time slots. T (T) _sen-proc The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _sen-proc May depend on the UE capabilities.

The end of the sensing window is in a logical time slotIn the logic time slot in time slot +.>At least beforeEnding (or starting). />Is at the end of the sensing window (e.g., +.>) Time between time slots selected for resources, e.g. < ->As can be shown in table 2. />Is at the beginning of the time slot of resource selection and the window for side link resource selection (e.g.)>) Time between, e.g. ->As can be shown in table 3. />And->In units of physical time (e.g., milliseconds) or in units of physical time slots. />And/orThe configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a- >And/or +.>May depend on the UE capabilities.

The start of the sensing window is M-1 logical slots before the last slot of the sensing window. Representing the start of the sensing window as. Thus (S)>The total number of logical time slots in the sensing window is M. M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example.

Selection ofSo that->At least T at or after time slot n _sen-proc 。

The UE selects Y ' consecutive logical slots for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In FIG. 42, the period of time between time slot R and the last logical time slot of the sensing window may be greater thanBecause not all physical slots are logical slots.

Fig. 43 illustrates yet another example of a sensing operation 4300 in accordance with an embodiment of the present disclosure. The embodiment of the sensing operation 4300 shown in FIG. 43 is for illustration only.

Fig. 44 illustrates yet another example of a sensing operation 4400 according to an embodiment of the disclosure. The embodiment of the sensing operation 4400 shown in fig. 44 is for illustration only.

In one example A1.3.3, the UE can begin sensing in a first logical slot at or after slot n, as illustrated in fig. 43 and 44.

The end of the sensing window is in a logical time slotIn the logic time slot in time slot +.>At least beforeEnding (or starting). />Is at the end of the sensing window (e.g., +.>) Time between time slots selected for resources, e.g. < ->As can be shown in table 2. />Is at the beginning of the time slot of resource selection and the window for side link resource selection (e.g.)>) Time between, e.g. ->As can be shown in table 3. />And->In units of physical time (e.g., milliseconds) or in units of physical time slots. />And/orThe configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->And/or +.>May depend on the UE capabilities.

The start of the sensing window is in the time slotThe first M logical slots. Representing the start of the sensing window as. Thus (S)>M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example.

Selection ofSo that->At or after time slot n.

The UE selects Y ' consecutive logical slots for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In fig. 43 and 44, the period of time between the slot R and the last logical slot of the sensing window may be greater thanBecause not all physical slots are logical slots.

Fig. 45 illustrates yet another example of a sensing operation 4500 according to an embodiment of the present disclosure. The embodiment of the sense operation 4500 shown in fig. 45 is for illustration only.

Fig. 46 illustrates yet another example of a sensing operation 4600 in accordance with an embodiment of the present disclosure. The embodiment of the sensing operation 4600 shown in fig. 46 is for illustration only.

In one example A1.3.4, the UE can be at least T after slot n _sen-proc The sensing starts in the first logical slot (the minimum time required for the UE to start sensing after being triggered in slot n), as shown in fig. 45 and 46, where T _sen-proc The units may be physical time (e.g., milliseconds) or physical time slots. T (T) _sen-proc The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, T _sen-proc May depend on the UE capabilities.

The start of the sensing window is in the time slotThe first M logical slots. Representing the start of the sensing window as. Thus (S)>M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example. />

Selection ofSo that->At least T after time slot n _sen-proc 。

The UE selects Y ' consecutive logical slots for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In fig. 45 and 46, the period of time between the time slot R and the last logical time slot of the sensing window may be greater thanBecause not all physical slots are logical slots.

In one example A1.3.5, the windows (slots) for resource selection in examples A1.3.1, A1.3.2, A1.3.3, and A1.3.4 include: (1) First logical time slot determined as described in examples A1.3.1, A1.3.2, A1.3.3, and A1.3.4The method comprises the steps of carrying out a first treatment on the surface of the (2) Up to logical time slot->M consecutive logical time slots, wherein +.>Is M or 31 logical time slots after the end of the sensing window (i.e. if +.>Is the last slot of the sensing window, < +.> M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example; (3) If m is<Y' _min The UE may choose to be +.>Additional Y '-m time slots (Y'. Gtoreq.Y 'after and before the end of the resource selection window' _min ) Wherein the end of the resource selection window is defined by n+T ₂ Given, and T is determined as described in TS 38.214 ₂ . In time slot->The additional time slots thereafter need not be contiguous; and (4) if m.gtoreq.Y' _min The index of the last logical slot for resource selection is then at least made of + ->Given. Logical time slot in time slot->Is then continuous (in->Thereafter and including Y 'of the time slot' _min Consecutive logical time slots).

In one example a1.4, the UE performs sensing in a logical slot immediately preceding and up to slot n (if slot n is a logical slot). Assume that the first logical slot before slot n where the UE has the association sensing result is the slot. The UE selects the first slot +.>。

Fig. 47 illustrates yet another example of a sensing operation 4700 according to an embodiment of the present disclosure. The embodiment of the sensing operation 4700 shown in fig. 47 is for illustration only.

In one example a1.4.1, the UE may continue to sense after slot n, as illustrated in fig. 47.

The end of the sensing window is in a logical time slotIn the logic time slot in time slot +.>At least beforeEnding (or starting). />Is at the end of the sensing window (e.g., +.>) Time between time slots selected for resources, e.g. < ->As shown in table 2. />Is at the beginning of the time slot of resource selection and the window for side link resource selection (e.g.) >) Time between, e.g. ->As shown in table 3.And->In units of physical time (e.g., milliseconds) or in units of physical time slots. />And/or +.>The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->And/or +.>May depend on the UE capabilities.

Selection ofSo that->At->At or after the time slot.

The UE selects Y ' consecutive logical slots for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In FIG. 47, the period of time between time slot R and the last logical time slot of the sensing window may be greater thanBecause not all physical slots are logical slots.

Fig. 48 illustrates yet another example of a sensing operation 4800 according to an embodiment of the present disclosure. The embodiment of the sensing operation 4800 shown in FIG. 48 is for illustration only.

In one example a1.4.2, the UE may continue to sense after slot n, as illustrated in fig. 48.

The end of the sensing window is in a logical time slotIn the logic time slot in time slot +.>BeforeAt leastEnding (or starting). />Is at the end of the sensing window (e.g., +.>) Time between time slots selected for resources, e.g. < ->As shown in table 2. />Is at the beginning of the time slot of resource selection and the window for side link resource selection (e.g.)>) Time between, e.g. ->As shown in table 3.And->In units of physical time (e.g., milliseconds) or in units of physical time slots. />And/or +.>The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In one example, a->And/or +.>May depend on the UE capabilities.

Selection ofSo that->At->At or after the time slot.

The UE selects Y ' consecutive logical slots for SL resource selection, where Y '. Gtoreq.Y ' _min 。Y' _min The configuration or updating may be specified in the system specification and/or (pre) configured by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling. In fig. 48, the period of time between time slot R and the last logical time slot of the sensing window may be greater thanBecause not all physical slots are logical slots.

In one example a1.4.3, the windows (slots) for resource selection in examples a1.4.1, a1.4.2, and a1.4.3 include: (1) The first logical time slot determined as described in examples a1.4.1, a1.4.2 and a1.4.3The method comprises the steps of carrying out a first treatment on the surface of the (2) Up to logical time slot->M consecutive logical time slots, wherein +.>Is M or 31 logical time slots after the end of the sensing window (i.e. if +.>Is the last slot of the sensing window, < +.> M may be specified in the system specification and/or preconfigured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling, M being 31 slots in one example; (3) If m is<Y' _min The UE may choose to be +.>Additional Y '-m time slots (Y'. Gtoreq.Y 'after and before the end of the resource selection window' _min ) Wherein the end of the resource selection window is defined by n+T ₂ Given, and as described in section 8.1.4 of TS 38.214, T is determined ₂ . In time slot->The additional time slots thereafter need not be contiguous; and (4) if m.gtoreq.Y' _min The index of the last logical slot for resource selection is then at least made of + ->Given. Logical time slot in time slot->Is then continuous (in->Thereafter and including Y 'of the time slot' _min Consecutive logical time slots).

In the example of component 1, let n+T ₁ For the beginning of a window for resource selection (e.g., n+T ₁ (i.e., the first time slot selected for resource selection) may beOr is less than the time slot->Early time slots). The UE selects the end of the window for resource selection, e.g., n+T ₂ So that T is ₂ Less than the packet delay budget and T ₂ -T ₁ ≥T _2min Wherein T is _2min Is the minimum length of the window for resource selection. If the UE fails to satisfy T ₂ -T ₁ ≥T _2min When it is->When the previous M logical slots start (or when it senses at +.>The previous M logical slots of the CPS, depending on the use case), the UE may do one of the following: (1) Ensure that T is satisfied ₂ -T ₁ ≥T _2min Standard, e.g. by starting sensing (or sensing according to the use case) at +.>Less than M logical time slots previously used for CPS; and (2) CPS is not performed. The UE uses random resource selection.

Selecting one of the two options may depend on the implementation of the UE.

In example a1.5, the UE performs for a slotThe (re) selection of the resource of the SL transmission (e.g., aperiodic transmission). The UE and/or the TX resource pool are (pre) configured for partial sensing. In time slot n ₁ Execution in (1) for slot->The resource (re) selection of the SL transmission in (b). The next transmission of the first selected (e.g., reserved) resource is in slot +.>Is a kind of medium. UE in slot n ₂ Re-evaluation/preemption of the resources for the selected (reserved) resource is performed.

For time slot n ₁ The UE is in a slotSensing (e.g., continuous Portion Sensing (CPS)) is performed before, the time slot isThe process ends. For CPS, the CPS sensing window is set at the time slot where SL transmission can occur (e.g., time slot +.>Or time slot->) The first M logical slots begin.

Fig. 49 illustrates yet another example of a sensing operation 4900 according to an embodiment of the disclosure. The embodiment of the sensing operation 4900 shown in fig. 49 is for illustration only.

In one example, as illustrated in fig. 49, the UE is fromTo and including time slot->Continue to perform sensing, or the UE is from +>To time slot->Sensing continues to be performed.

Fig. 50 illustrates yet another example of a sensing operation 5000 according to an embodiment of the disclosure. The embodiment of the sensing operation 5000 shown in fig. 50 is for illustration only.

In another example, as illustrated in fig. 50, the UE is fromTo and including occur for time slot->Of the resource selection of (i.e. time slot n) ₁ ) Continue to perform sensing, or the UE is from +>To occur for time slot->Of the resource selection of (i.e. time slot n) ₁ ) Sensing continues to be performed.

In one example, a1.5.1a, time slotsAnd time slot->The time between which is less than M logical time slots. This is indicated in the top part of fig. 49. For time slots->CPS sensing window of reevaluation/preemption check of selected (e.g., reserved) resources in time slot +.>The first M logical slots begin. For time slots->CPS sensing window of reevaluation/preemption check of selected (e.g., reserved) resources in time slot +.>Previously started and comprising additional sensing and possibly for time slots +.>Is a part of the (re) selected CPS window.

In one example a1.5.1b, a time slot for a time slot occursIs (re) selected time slot (e.g., time slot n ₁ ) And time slot->The time between which is less than M logical time slots. This is indicated in the top part of fig. 50. For time slotsCPS sensing window of reevaluation/preemption check of selected (e.g., reserved) resources in time slot +. >The first M logical slots begin. For use inTime slot->CPS sensing window of re-evaluation/preemption check of selected (e.g., reserved) resources in time slot n ₁ Previously started and comprising additional sensing and possibly for time slots +.>Is a part of the (re) selected CPS window.

In one example, a1.5.2a, time slotsAnd time slot->The time between which exceeds M logical time slots. This is indicated in the lower part of fig. 49. For time slots->CPS sensing window of reevaluation/preemption check of selected (e.g., reserved) resources in time slot +.>The first M logical slots begin. In this example, no additional sensing is used.

In one example a1.5.2b, a time slot for a slot occursIs (re) selected time slot (e.g., time slot n ₁ ) And time slot->The time between which exceeds M logical time slots. This is indicated in the lower part of fig. 50. For time slotsIs selected (e.gCPS sensing window of re-evaluation/preemption check of reserved) resources at time slot +.>The first M logical slots begin. In this example, no additional sensing is used.

In example a1.5.3a, the UE is in a slotAnd time slot->Whether or not additional sensing is performed may be (pre) configured (e.g., for a resource pool).

In example a1.5.3b, the UE is in a slotAnd occurs for time slot->Is (re) selected time slot (i.e. time slot n ₁ ) Whether or not additional sensing is performed may be (pre) configured (e.g., for a resource pool).

In one example, a1.5.4a, there is an additional sensing window, e.g. a slot, before each slot of the resource (re) selection and re-evaluation/preemption checkAnd time slot->Between (possibly also including time slots->) Is added to the sensing of the sensor.

In one example a1.5.4b, there is an additional sensing window before each time slot of the resource (re) selection and re-evaluation/preemption checkFor example, time slotsAnd occurs for time slot->Is (re) selected time slot (i.e. time slot n ₂ ) Between (and possibly also including time slot n ₂ ) Is added to the sensing of the sensor.

In one example A1.5.5, whether the UE performs additional sensing depends on the value of M. For example, if M<M _th Or M is less than or equal to M _th No additional sensing is performed, otherwise additional sensing is performed. Wherein M is _th Is (pre) configurable (e.g. a (pre) configured threshold for a resource pool, if not (pre) configured, a value specified in the system specification (e.g. 31 slots) may be used).

In one example, a1.5.6a, if no additional sensing is performed, then the time slot And time slot->The time between is greater than M logical time slots. For example, in time slot->During the (re-) selection of the resource of the SL transmission in (a) slot +.>The resource of the next choice (e.g. reserved) is chosen to be larger than +.>The following M logical slots. />

In one example, a1.5.6b, if no additional sensing is performed, then this occurs for the time slotIs (re) selected time slot (e.g., time slot n ₁ ) And time slot->The time between is greater than M logical time slots. For example, in time slot n ₁ During the resource (re) selection of (a) slot +.>The next selected (e.g., reserved) resource in (i) is selected to be greater than in slot n ₁ The following M logical slots.

In one embodiment of component A2, aperiodic transmissions in a resource pool with periodic reservations in a mode 2 resource pool are provided.

Mode 2 resource pools with periodic reservations enable sl-multireservations resource.

The example of component 1 may also be applicable to aperiodic transmissions in a mode 2 resource pool with periodic reservations when periodic-based partial sensing results are not available.

In one embodiment of component A3, channel Busy Rate (CBR) measurements in SL in a resource pool with partial sensing are provided.

Channel Busy Rate (CBR) is measured as a subchannel in the resource pool in time slot n with the SL Received Signal Strength Indicator (RSSI) measured by the UE exceeding the CBR measurement window [ n-a, n-1]The part of the (pre) configured threshold sensed above, where a is equal to 100 or 100.2 according to the higher layer parameter sl-TimeWindowSizeCBR, which may be { ms100, slot100} ^μ And each time slot. μ is a subcarrier spacing configuration.

In the case of partial sensing, CBR is based only on RSSI measured on time slots where the UE performs partial sensing (e.g., periodic partial sensing (PBPS) and/or Continuous Partial Sensing (CPS)) in a measurement window [ n-a, n-1] (e.g., in time slots where SL channels (e.g., PSCCH/PSSCH) may be received, e.g., for sensing).

The ratio of the sub-channels in the time window [ n-a, n-1] in which the part of the sub-channels is partly sensed (e.g. PBPS and/or CPS) by the UE, the SL RSSI measured by the UE exceeding a (pre) configured threshold, to the total number of sub-channels in the time window [ n-a, n-1] in which the UE is partly sensed (e.g. PBPS and/or CPS), e.g. in the time slots in which the SL channels (e.g. PSCCH/PSSCH) can be received, e.g. in for sensing.

In one example a3.1, if the number of time slots (e.g., time slots in which the UE performs partial sensing (e.g., PBPS and/or CPS)) in the time window [ n-a, n-1] available for CBR based on RRSI measurements is less than (or less than or equal to) a value, e.g., X, then CBR measurements are deemed to be invalid and unused, otherwise are deemed to be valid and used. X may be specified in the system specification and/or (pre) configured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling.

In one example a3.2, if the ratio of the time slots in the time window [ n-a, n-1] available for CBR based on RRSI measurements (e.g., the time slots in which the UE performs partial sensing (e.g., PBPS and/or CPS)) to the total number of time slots in the same window is less than (or less than or equal to) a value, e.g., Z, then CBR measurements are considered invalid and unused, otherwise considered valid and used. Z may be specified in the system specification and/or (pre) configured or updated by higher layer RRC signaling and/or MAC CE signaling and/or L1 control signaling.

In the present disclosure, determination of a sensing window and time slot for selecting candidate SL resources for aperiodic SL transmission is provided, as well as SL Channel Busy Rate (CBR) determination and validity in the case of partial sensing.

The above flow diagrams and illustrations illustrate example methods that may be implemented in accordance with the principles of the present disclosure, and various modifications may be made to the methods shown in the flow diagrams herein. For example, although illustrated as a series of steps, the individual steps in each figure may overlap, occur in parallel, occur in a different order, or occur multiple times. In another example, steps may be omitted or replaced by other steps.

While the present disclosure has been described with exemplary embodiments, various changes and modifications may be suggested to one skilled in the art. The disclosure is intended to embrace such alterations and modifications that fall within the scope of the appended claims. Any description of the present application should not be construed as implying that any particular element, step, or function is an essential element which must be included in the scope of the claims. The scope of patented subject matter is defined by the claims.

Claims

1. A user equipment, UE, comprising:

a transceiver; and

a processor operably coupled to the transceiver, the processor configured to:

operating with partial sensing;

operating in a resource pool configured for the partial sensing;

triggering side link SL resource selection in time slot n;

Selecting Y candidate time slots for the SL resource selection, wherein a first candidate time slot of the selected Y candidate time slots is a time slotAnd

in a sensing window, performing a continuous partial sensing CPS, wherein the sensing window is within the resource pool relative to the time slotIs allocated to the next slot in the sequence of slots.

2. The UE of claim 1, wherein the start of the sensing window is one of:

at the time slotThe first 31 logical time slots, or

At the time slotA previously configured number of logical time slots.

3. The UE of claim 1, wherein the start of the sensing window is not earlier than the slot n.

4. The UE of claim 1, wherein:

the end of the sensing window is at the time slotBefore->

Is the sensing processing delay time, and

is the resource selection processing time.

5. The UE of claim 1, wherein:

the resource pool has a parameter sl-MultiReserve resource set to be enabled; and is also provided with

The processor is further configured to perform periodic based partial sensing PBPS.

6. The UE as recited in claim 5, wherein the selected Y candidate slots are for the CPS and the PBPS.

7. The UE of claim 5, wherein the processor is further configured to perform PBPS for re-evaluation checking or preemption checking.

8. The UE of claim 1, wherein:

the processor is further configured to trigger a re-evaluation check or a preemption check in the time slot n,

time slotsReplacing the time slot->And is also provided with

The time slotIs in time slot n+T ₃ The first time slot thereafter with SL resources for re-evaluation checking or preemption checking, where T ₃ Is the resource selection processing time for re-evaluating the check or preemption check.

9. The UE of claim 1, wherein:

the processor is further configured to determine candidate resources in time slot R, and

the time slot R is the time slotBefore resource selection processing time->

10. The UE of claim 1, wherein the processor is further configured to:

measuring a SL channel busy rate CBR over a window [ m-a, m-1], where m is a time slot for measuring a received signal strength indicator RSSI, and determining a according to a higher layer parameter SL-TimeWindowSizeCBR, and

determining the CBR based on the RSSI measured in the time slots within the window, wherein partial sensing is performed and the number of time slots is X; and

When X is not less than a preconfigured value, the measured CBR is used.

11. A method of operating a user equipment, UE, the method comprising:

operating with partial sensing;

operating in a resource pool configured for the partial sensing;

triggering side link SL resource selection in time slot n;

12. The method of claim 11, wherein the start of the sensing window is one of:

at the time slotThe first 31 logical time slots, or

At the time slotA previously configured number of logical time slots, and

wherein the start of the sensing window is not earlier than the time slot n.

13. The method according to claim 11, wherein:

the end of the sensing window is at the time slotBefore->

Is the sensing processing delay time, and

is the resource selection processing time.

14. The method according to claim 11, wherein:

The method further includes performing periodic based partial sensing PBPS for re-evaluation checks and preemption checks,

wherein the selected Y candidate slots are used for the CPS and the PBPS.

15. The method of claim 11, the method further comprising:

a re-evaluation check or preemption check is triggered in said time slot n,

wherein time slotsSubstitute stationThe time slot->And is also provided with

The time slotIs in time slot n+T ₃ The first time slot thereafter with SL resources for re-evaluation checking or preemption checking, where T ₃ Is the resource selection processing time for re-evaluating the check or preemption check,

the method comprises the following steps:

a candidate resource is determined in the time slot R,

wherein the time slot R is the time slotBefore resource selection processing time->And is also provided with

The method comprises the following steps:

measuring a SL channel busy rate CBR over a window [ m-a, m-1], where m is a time slot for measuring a received signal strength indicator RSSI, and determining a according to a higher layer parameter SL-TimeWindowSizeCBR;

When X is not less than a preconfigured value, the measured CBR is used.