A first terminal device, a second terminal device, and a method performed by the first terminal device.

Abstract

An example embodiment of the present disclosure relates to resource indication / reservation for flexible and reliable sidelink transmissions, in which a first terminal device senses idle spectrum sections for at least one sidelink transmission between the first terminal device and a second terminal device in an unlicensed spectrum and transmits information indicating the idle spectrum sections to the second terminal device for resource allocation. This solution provides several enhancements related to resource indication / reservation for flexible and reliable sidelink transmissions on unlicensed spectrum.

Description

[[Technical Field]]

[0001] Embodiments of the present disclosure generally relate generally to the field of communication, and in particular to a sidelink communication method, a terminal device and a computer-readable medium. [[Background Art]]

[0002] Sidelink in unlicensed spectrum (SL-U: Sidelink in unlicensed spectrum) is being studied in the Release 18 sidelink evolution work item of the 3rd Generation Partnership Project (3GPP: 3rd Generation Partnership Project). The term "shared spectrum" has the same meaning as unlicensed spectrum. The SL-U scheme should be based on New Radio (NR) sidelink and NR unlicensed (NR-U: NR unlicensed). This scheme considers maximum reuse of the NR-U channel access mechanism and the sidelink framework.

[0003] The improvement of sidelink data rate is motivated by applications such as sharing sensor information (video) between highly automatically driven vehicles. In commercial use cases, data rates exceeding the possible range of Rel-17 may be required. With the support of sidelink carrier aggregation and sidelink over unlicensed spectrum, the improvement of data rate can be achieved. Furthermore, by extending sidelink operation, the improvement of data rate can be supported more efficiently. Although it is also possible to improve the data rate through support for new carrier frequencies and larger bandwidths, the main benefit is obtained from enabling sidelink to be applied to a wider range of use cases. More specifically, with the support of unlicensed spectrum and extension, sidelink will be better positioned to be implemented in commercial devices. [[Summary of the Invention]] [Problems that the invention aims to solve]

[0004] Overall, the exemplary embodiments of this disclosure provide solutions for sidelink resource allocation on the unlicensed spectrum. Embodiments not included in the claims (if any) should be construed as useful examples for understanding the various embodiments of this disclosure. [Means for solving the problem]

[0005] In a first embodiment, a method of communication is provided. The method includes, in a first terminal device, sensing a plurality of spectral sections that are idle for at least one sidelink transmission between the first terminal device and a second terminal device operating on an unlicensed spectrum, and transmitting information indicating the plurality of spectral sections to the second terminal device for resource allocation.

[0006] In a second embodiment, a method of communication is provided. The method includes, in a second terminal device, receiving from a first terminal device information indicating a plurality of spectral sections for resource allocation, and performing at least one sidelink transmission with the first terminal device on the plurality of spectral sections in the unlicensed spectrum.

[0007] In a third embodiment, a first terminal device is provided. The first terminal device comprises a processor and a memory storing computer program code, wherein the memory and the computer program code are configured to cause the terminal device to perform the method described in the first embodiment using the processor.

[0008] In a fourth embodiment, a second terminal device is provided. The second terminal device comprises a processor and a memory storing computer program code, wherein the memory and the computer program code are configured to use the processor to cause the network device to execute the method described in the second embodiment.

[0009] In a fifth embodiment, a computer-readable medium is provided. The computer-readable medium includes program instructions for causing a device to perform at least the methods described in the first and second embodiments.

[0010] It should be understood that the summary portion of the invention is not intended to identify any important or fundamental features of the embodiments of this disclosure, nor to limit the scope of this disclosure. Other features of this disclosure should be readily apparent from the following description. [Brief explanation of the drawing]

[0011] Several exemplary embodiments will be described below with reference to the drawings.

[0012] [Figure 1A] This figure shows an exemplary environment in which exemplary embodiments of the present disclosure can be implemented. [Figure 1B] This figure shows an exemplary environment in which exemplary embodiments of the present disclosure can be implemented.

[0013] [Figure 2] This figure shows an example of a resource structure for sidelink communication according to some exemplary embodiments of the present disclosure.

[0014] [Figure 3] This figure shows another example of a resource structure for sidelink communication according to some exemplary embodiments of the present disclosure.

[0015] [Figure 4]It is a flowchart of an exemplary method implemented in a first terminal device according to some exemplary embodiments of the present disclosure.

[0016] [Figure 5A] It is a diagram illustrating an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure. [Figure 5B] It is a diagram illustrating an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure.

[0017] [Figure 6A] It is a diagram illustrating an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure. [Figure 6B] It is a diagram illustrating an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure.

[0018] [Figure 7A] It is a diagram illustrating an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure. [Figure 7B] It is a diagram illustrating an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure.

[0019] [Figure 8A] It is a diagram illustrating an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure. [Figure 8B] It is a diagram illustrating an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure.

[0020] [Figure 9] It is a diagram illustrating an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure.

[0021] [Figure 10A] This figure shows an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure. [Figure 10B] This figure shows an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure.

[0022] [Figure 11] This figure shows an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure.

[0023] [Figure 12] This figure shows an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure.

[0024] [Figure 13A] This figure shows an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure. [Figure 13B] This figure shows an example of resource allocation for sidelink communication according to some other exemplary embodiments of the present disclosure.

[0025] [Figure 14] This is a flowchart of an exemplary method implemented in a first terminal device according to some exemplary embodiments of the present disclosure.

[0026] [Figure 15] This is a flowchart of another exemplary method implemented in a second terminal device according to some other exemplary embodiments of the present disclosure.

[0027] [Figure 16] This is a block diagram of an exemplary computer-readable medium relating to some exemplary embodiments of the present disclosure.

[0028] In the diagram, identical or similar reference numbers represent identical or similar elements. [Modes for carrying out the invention]

[0029] The principles of this disclosure are described here with reference to several exemplary embodiments. These embodiments are provided for illustrative purposes only and are intended to help those skilled in the art understand and implement this disclosure, and should be understood as not to imply any limitation on the scope of this disclosure. The embodiments described herein can be implemented in various ways different from those described below.

[0030] In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art.

[0031] As used herein, the term “terminal device” refers to any device having wireless or wired communication capabilities. Examples of terminal devices include user equipment (UE), personal computers, desktops, mobile phones, cellular phones, smartphones, personal digital assistants (PDA), portable computers, tablets, wearable devices, Internet of Things (IoT) devices, Ultra-reliable and Low Latency Communication (URLLC) devices, Internet of Everything (IoE) devices, machine-type communication (MTC) devices, in-vehicle devices for V2X communication where X represents pedestrians, vehicles, or infrastructure / networks, devices for Integrated Access and Backhaul (IAB), Small Data Transmission (SDT), mobility, Multicast and Broadcast Services (MBS), positioning, dynamic / flexible redundancy in commercial networks, reduced capability (RedCap), and high-altitude platforms (HAP) encompassing satellites and unmanned aircraft systems (UAS). Spacecraft or aircraft within a non-terrestrial network (NTN), including a Platform; Extended reality (XR) devices that include different types of reality such as Augmented Reality (AR), Mixed Reality (MR), and Virtual Reality (VR); Unmanned Aerial Vehicles (UAVs), which are aircraft without human operators and are commonly referred to as drones; High-speed trains (HSTs)The term "terminal device" includes, but is not limited to, devices on a speed train, or image acquisition devices such as digital cameras, sensors, game devices, music storage and playback devices, or internet-connected home appliances that enable wireless and wired internet access and browsing. "Terminal devices" may further have "multicast / broadcast" capabilities to support V2X applications, transparent IPv4 / IPv6 multicast distribution, IPTV, smart TV, wireless services, wireless software distribution, group communications, and IoT applications where public safety and mission are paramount. They may also incorporate one or more Subscriber Identity Modules (SIMs), known as multi-SIMs. The term "terminal device" may be used interchangeably with UE, mobile station, subscriber station, mobile terminal, user terminal, or wireless device.

[0032] The term "network device" refers to a device that can provide or host a cell or coverage on which terminal devices can communicate. Examples of network devices include, but are not limited to, low-power nodes such as Node B (NodeB or NB), Evolutionary Node B (eNodeB or eNB), Next Generation Node B (gNB), Transmission Reception Point (TRP), Remote Radio Unit (RRU), Radio Head (RH), Remote Radio Head (RRH), IAB node, Femtonode, Piconode, Reconfigurable Intelligent Surface (RIS), and Network Control Repeater.

[0033] Terminal devices or network devices may possess artificial intelligence (AI) or machine learning capabilities. Generally, this includes trained models derived from large amounts of data collected for specific functions, which can be used to predict certain information.

[0034] Terminal devices or network devices may operate on several frequency ranges, such as FR1 (410MHz~7125MHz), FR2 (24.25GHz~71GHz), frequency bands greater than 100GHz, and terahertz (THz). Furthermore, they can operate on licensed / unlicensed / shared spectrum. Terminal devices may have one or more connections to network devices under Multi-Radio Dual Connectivity (MR-DC) application scenarios. Terminal devices or network devices can operate in full-duplex, flexible-duplex, and cross-split-duplex modes. Network devices may have network energy saving, self-organizing network (SON) / minimization of drive test (MDT) functions. Terminals may have power saving functions.

[0035] Embodiments of this disclosure may be implemented, for example, in test equipment such as signal generators, signal analyzers, spectrum analyzers, network analyzers, test terminal devices, test network devices, or channel emulators.

[0036] Embodiments of this disclosure may be implemented in accordance with any generation of communication protocols currently known or to be developed in the future. Examples of communication protocols include, but are not limited to, the first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or sixth generation (6G) networks.

[0037] Terminal devices in sidelink communication can transmit relevant data to each other. As used herein, the term “resource” or “transmitting resource” may mean any resource for performing communication, such as a resource in the time domain, a resource in the frequency domain, a resource in the spatial domain, a resource in the code domain, or any other resource that enables communication. Hereafter, a resource in the frequency domain or the time domain will be used as an example of a transmitting resource to illustrate some exemplary embodiments of the present disclosure. It should be understood that exemplary embodiments of the present disclosure may also apply to other resources in other resource domains.

[0038] As used herein, the term "sidelink" refers to a direct communication link and / or discovery link between two or more terminal devices. The term "PC5" refers to an interface that enables communication and / or discovery between two or more terminal devices without going through any network nodes. The term "PC5 direct link" refers to a link established between two or more terminal devices via the PC5 interface. As described herein, "sidelink" and "PC5 direct link" are equivalent to each other.

[0039] The singular forms “one” and “the foregoing” used herein also include the plural form unless explicitly indicated in the context. The term “including” and its variations should be understood as open-ended terms meaning “including, but not limited to.” The term “based on” should be understood as “at least partially based on.” The terms “several embodiments” and “embodiment” should be understood as “at least several embodiments.” The term “another embodiment” should be understood as “at least one other embodiment.” Terms such as “first,” “second,” etc., may refer to different or identical subjects. The following may include other explicit and implicit definitions.

[0040] In some examples, values, procedures, or devices are referred to as “best,” “worst,” “highest,” “minimum,” “maximum,” etc. Such descriptions are intended to show that a choice can be made from among many usable functional alternatives, and it should be understood that such a choice does not need to be better, smaller, higher, or otherwise more desirable than other choices.

[0041] As used herein, the term “circuit” may mean a hardware circuit and / or a combination of a hardware circuit and software. For example, a circuit may be a combination of analog and / or digital hardware circuits with software / firmware. In yet another example, a circuit may be any part of a software-assisted hardware processor, including a digital signal processor, software, and memory, that works together to enable a device such as a terminal or network device to perform various functions. In yet another example, a circuit may be a hardware circuit and / or a processor such as a microprocessor or a part thereof that requires software / firmware for operation, although the software may be absent if it is not required for operation. As used herein, the term “circuit” also includes implementations of hardware circuits or processors or parts of hardware circuits or processors and their (or their) accompanying software and / or firmware alone.

[0042] The principle of sidelink operations on the license spectrum is to consider the maximum reuse of the NR-U channel access mechanism and sidelink framework. However, the problem is how to indicate resource allocation and reservation for SL-U transmissions on multiple resource block (RB) sets (Listen Before Talk (LBT) subbands in the frequency domain) in order to adapt to specific channel access procedures and resource allocation methods on the unlicensed spectrum.

[0043] This disclosure provides a scheme for sidelink transmission on multiple RB sets, based on potential improvements over conventional multi-channel channel access procedures, to provide more frequency resources for LBT-based transmission and to counteract the effects of LBT procedure uncertainties. This disclosure provides a method relating to improvements for resource instruction / reservation for transmission on consecutive RB sets with aligned start symbols within slots. This disclosure further provides a method relating to improvements for resource instruction / reservation for transmission on discontinuous RB sets with aligned start symbols within slots. This disclosure further provides a method relating to considering improvements for resource instruction / reservation for transmission on RB sets with offset start symbols within slots. This solution further provides a method relating to improvements for resource instruction / reservation for transmission on the same RB set across consecutive slots within Maximum Channel Occupancy (MCO).

[0044] This disclosure provides several new definitions and improvements related to resource instruction / reservation for flexible and reliable sidelink transmissions on multiple RB sets within the unlicensed spectrum. Illustrative embodiments of this disclosure are described in detail below with reference to the accompanying drawings.

[0045] Figure 1A shows an exemplary environment 100A in which an exemplary embodiment of the present disclosure can be implemented. Environment 100, which may be part of a communication network, may include terminal device 110, terminal device 120, and network device 130. The number of devices in Figure 1 is given for illustrative purposes only and should be understood as not to imply any limitation to the present disclosure. The communication network 100 may include any appropriate number of network devices and / or terminal devices suitable for implementing embodiments of the present disclosure. In the example of Figure 1, network device 130 provides a serving area referred to as cell 140. Terminal devices 110 and 120 are within the coverage of cell 140. Figure 1B also shows an exemplary environment 100B in which an exemplary embodiment of the present disclosure can be implemented. Environment 100, which may be part of a communication network, may include terminal device 110 and terminal device 120. Terminal devices 110 and 120 may be outside the coverage of the network device.

[0046] As shown in Figures 1A and 1B, terminal device 110 and terminal device 120 can communicate with each other via sidelink communication. Sidelink communication is direct wireless radio communication between two or more terminal devices, for example, between two or more terminal devices among terminal devices 110 and terminal device 120. In this type of communication, two or more terminal devices that are geographically closest can communicate directly without going through network device 130 or the core network. Therefore, data transmission in sidelink communication differs from typical cellular network communication, where a terminal device sends data to network device 130 (i.e., uplink transmission) or receives data from network device 130 (i.e., downlink transmission). As shown in Figures 1A and 1B, in sidelink communication, data is transmitted directly from source terminal device (e.g., terminal device 110) to target terminal device (e.g., terminal device 120) via an integrated air interface, for example, the PC5 interface (i.e., sidelink transmission).

[0047] Communication in environments 100A and 100B can be implemented in accordance with, but is not limited to, any suitable communication protocol, including, cellular communication protocols such as the first generation (1G), the second generation (2G), the third generation (3G), the fourth generation (4G), and the fifth generation (5G), wireless local area network communication protocols such as IEEE 802.11, and / or any other protocols currently known or to be developed in the future. Furthermore, communication may utilize, but is not limited to, any suitable wireless communication technology, including, but is not limited to, code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), frequency division duplex (FDD), time division duplex (TDD), multiple-input multiple-output (MIMO), orthogonal frequency division multiplexing (OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), and / or any other technology currently known or to be developed in the future.

[0048] Sidelink communication can offer several advantages, including reduced data transmission load on the core network, decreased system resource consumption, reduced transmission power consumption, and lower network operating costs, as well as saving radio spectrum resources and improving the spectral efficiency of cellular wireless communication systems.

[0049] In a sidelink communication system, sidelink resources are used to transmit information between terminal devices. Depending on the application scenario and type of service, sidelink communication methods include, but are not limited to, device-to-device (D2D) communication and vehicle-to-everything (V2X) communication.

[0050] In sidelink communication, terminal devices transmit or receive signals using resources in the sidelink resource pool. As shown in Figure 2, the sidelink resource pool includes resources in the time domain and frequency domain, and these resources are either dedicated to sidelink communication or shared by sidelink communication and cellular link. The sidelink resource pool may include multiple slots and resource blocks (RBs), and all or some of the symbols in a slot may be used for sidelink transmission. Terminal devices 110 and 120 may transmit sidelink signaling or information using the sidelink channel. The RBs in the resource pool may be divided into RB sets. Each RB set contains a sequence of RBs. Terminal devices may use one or more RB sets as resources to transmit sidelink data.

[0051] Interlace of Resource Blocks (IRBs) are used as frequency resource units for NR-U uplink and sidelink communications in the unlicensed spectrum. Figure 3 shows examples of RB sets and IRBs according to some embodiments of the present disclosure. A guard band may be present between two adjacent RB sets.

[0052] Referring now to Figure 4, which shows a signaling flow 400 for sidelink resource allocation in communications according to some exemplary embodiments of the present disclosure. For illustrative purposes, the signaling flow 400 will be described with reference to Figure 1. Terminal devices 110 and 120 may be involved in the signaling flow 400. It should also be understood that the signaling and operation sequence in Figure 4 is shown for illustrative purposes only. The signaling and operation sequence shown in Figure 400 may be performed in any suitable order appropriate for implementing embodiments of the present disclosure.

[0053] In the signaling flow 400, the first terminal device 110 senses several spectral sections that become idle for sidelink transmission (405). Transmission takes place between the first terminal device 110 and the second terminal device 120 in the unlicensed spectrum. The first terminal device 110 then transmits information (402) indicating the spectral sections to the second terminal device 120 (410). When the second terminal device receives the information (402) (415), the first terminal device 110 and the second terminal device 120 may perform sidelink communication.

[0054] In some embodiments, multiple resources located in different frequency bands may be allocated to terminal device 110 or terminal device 120 for physical sidelink control channel (PSCCH) / physical sidelink shared channel (PSSCH) transmission (which may or may not be IRB based). That is, terminal device 110 or terminal device 120 may perform transmission on a corresponding set of channels, e.g., one or more RB sets or LBT subbands. Transmission on each channel should satisfy the occupied channel bandwidth (OCB) requirement under NR-U regulations. As shown in Figure 5A, according to different channel access procedures and resource allocation schemes in the sidelink, N sets of channels for transmission (RB sets) may be adjacent to each other in the frequency domain (excluding guard bands). Alternatively, as shown in Figure 5B, RB sets for transmission may be distributed separately and spaced apart from each other within the resource pool.

[0055] In some embodiments, there may be two methods for transporting resource instruction / reservation-related information based on sensing / reservation of resources by terminals 110 and / or 120. Method 1 involves inserting a new field with additional information into the conventional Sidelink Control Information (SCI) format in the sidelink, or replacing the corresponding field with redefined / extended information (of the same or different size). Method 2 involves introducing a new SCI format (e.g., SCI format 1-X and / or SCI format 2-D) / Medium Access Control (MAC)-Control Element (CE) to transport extended SCI information for assumed transmissions across multiple RB sets. The new SCI format may include some of the information from the conventional SCI format. A continuous set of RB symbols with aligned start symbols.

[0056] In some embodiments, the information includes instructions determined based on the number of resource reservations and the number of spectral sections in the resource pool. These instructions pertain to a plurality of consecutive spectral sections among the plurality of spectral sections. Transmissions on the plurality of consecutive spectral sections have a start symbol aligned within a sidelink slot.

[0057] For example, after terminal 110 has become idle for transmission and sensed N consecutive RB sets, each having aligned start symbols on all RB sets (as set C of channels, each channel corresponding to an RB set), the corresponding resource indications / reservations in the SCI and / or MAC-CE may be extended / introduced to indicate resource allocation for the consecutive RB sets. New content may be introduced within the 3rd Generation Partnership Project Technical Specification (3GPP TS) as follows: TIFF0007917060000001.tif201162

[0058] parameters TIFF0007917060000002.tif522 and It should be noted that TIFF0007917060000003.tif519 may be predefined.

[0059] In some embodiments, the information indicates indices of multiple interlaced spectra within each of multiple spectral sections, the indicated indices of multiple interlaced spectra being common to at least one of the multiple spectral sections and that at least one reserved resource. The information further indicates multiple interlaced spectra individually within each of the multiple spectral sections. As an addition or alternative, the information further indicates multiple interlaced spectra individually within each of that at least one reserved resource.

[0060] For example, the assigned interlace index (5 or 6 bits) may be common to all RB sets and all reservations, i.e., interlaced RBs marked with the same index within each RB set are assigned to the UE. Alternatively, as shown in Figure 6A, separate interlace indices may be applied to each RB set in C, i.e., different interlaced RBs within each RB set are assigned to the UE, taking into account efficient resource utilization. Also, 5*N or 6*N bits indicate the interlace index per RB set. Furthermore, as shown in Figure 6B, separate interlace indices may be applied to each reservation, i.e., different interlaced RBs associated with each reservation are indicated. Also, 2*(5 or 6) or 3*(5 or 6) bits indicate the interlace index per reservation. If the upper-layer parameter useInterlacePSCCH-PSSCH / useInterlaceSL is not set, the interlace index indicator field is omitted and 0 bits are required.

[0061] In some embodiments, the information includes at least one Channel Occupancy (CO) instruction for the at least one sidelink transmission. The at least one CO instruction includes CO instructions common to the transmission on at least one of a plurality of spectral sections and the at least one reserved resource. Additionally or alternatively, the at least one CO instruction includes a plurality of CO instructions used to indicate CO separately for the plurality of spectral sections.

[0062] For example, a CO instruction based on a channel access procedure may be introduced within the SCI. This may include, but is not limited to, a channel occupancy start point instruction and a remaining channel occupancy duration instruction. This may be common to all RB sets and all reservations. Alternatively, as shown in Figure 7A, if a Tx UE does not occupy all RB sets across multiple slots to accommodate varying bandwidth requirements on consecutive slots, separate COs may be indicated for each RB set. Correspondingly, a different number of RB sets may be indicated for each reservation. Also, as shown in Figure 7B, if a method based on a cyclic prefix extension (CPE) is applied to the channel access procedure on multiple RB sets to align the transmit start symbol on all RB sets, there may be different transmit start points on separate RB sets. Therefore, separate COs may be indicated for each RB set.

[0063] In some embodiments, the information is provided for each of the multiple spectral sections as parameters, namely the resource reservation period, modulation, and coding scheme (M CS: The Modulation and Coding Scheme (MCS) or at least one of the additional MCS table indicators is shown separately.

[0064] For example, with respect to other information within a conventional SCI, such as resource reservation periods, MCS, and additional MCS table indicators, these parameters may be common to all RB sets and all reservations and may be shown conventionally, as in a conventional SCI. Alternatively, if different RB sets correspond to different transactions or PDUs and extended / introduced instructions are to be considered, these parameters may be shown separately for each RB set and / or each reservation.

[0065] In some embodiments, information is transmitted through a selected spectral section from among multiple spectral sections. The selected spectral section is the lowest spectral section in the frequency domain from among the multiple spectral sections, or a randomly selected spectral section. Alternatively, information is transmitted through multiple spectral sections, and each spectral section carries the corresponding portion of the information associated with that spectral section.

[0066] For example, as shown in Figure 8A, the SCI may be transmitted over only one RB set, which may be the lowest frequency RB set in the channel set C, or a randomly selected RB set. Furthermore, a single SCI should carry all resource indications / reservations on all RB sets, and the information associated with each RB set may vary. Alternatively, as shown in Figure 8B, the performance of SCI reception for Rx UE may be improved by diversity reception by applying the SCI similarly to all RB sets in C. The SCI transmitted over each RB set may vary. A discontinuous set of RBs with aligned start symbols

[0067] In some embodiments, the information includes instructions determined based on the number of spectral sections in the resource pool, the instructions relating to a plurality of discontinuous spectral sections among the plurality of spectral sections. Transmissions on the plurality of discontinuous spectral sections have a start symbol aligned within a sidelink slot.

[0068] For example, as shown in Figure 9, after becoming idle for transmission and sensing N discontinuous (or partially continuous) RB sets with aligned start symbols on all RB sets (as channel set C), the corresponding resource indications / reservations in the SCI and / or MAC-CE may be expanded / introduced based on channel differences. The new content may be introduced into the 3GPP TS as follows: TIFF0007917060000004.tif89165

[0069] In some embodiments, the assigned interlace index (5 or 6 bits) may be common to all RB sets and all reservations. Alternatively, separate interlace indices may be indicated for each RB set and / or each reservation. If the upper-layer parameter useInterlacePSCCH-PSSCH / useInterlaceSL is not set, the interlace index indicator field is omitted and 0 bits are required. Based on a unified channel access procedure on all RB sets or independent channel access procedures on each RB set, the CO indicator may be common to all RB sets, as shown in Figure 10A, or it may be indicated for each RB set, as shown in Figure 10B. Also, given RB sets, separate COs may be indicated in relation to each reservation.

[0070] Regarding other conventional information, such as resource reservation periods, modulation and encoding schemes, and additional MCS table indicators, these parameters may be common to all RB sets and all reservations. Alternatively, these parameters may be shown separately for each RB set and / or for each reservation.

[0071] SCI may be transmitted via only one RB set, which may be the lowest frequency RB set in C, or a randomly selected RB set. Furthermore, a single SCI should carry all resource indications / reservations across all RB sets, and the information associated with each RB set may vary. Alternatively, SCI reception performance for Rx UE may be improved through diversity reception by applying SCI similarly to all RB sets. Multiple start symbols

[0072] In some embodiments, the information includes instructions determined based on the number of spectral sections in a resource pool, the instructions relating to a plurality of discontinuous spectral sections among the plurality of spectral sections. Transmissions on the plurality of discontinuous spectral sections have a first start symbol and one or more additional start symbols in the slot after the first start symbol. That is, the start points of transmissions on the plurality of discontinuous spectral sections are staggered within the slot. Transmissions on each spectral section may begin at the first start symbol or at an additional start symbol in the slot. The information further indicates a subset of the plurality of discontinuous spectral sections for which transmissions have one or more additional start symbols.

[0073] For example, assume that additional starting symbols within a slot are supported for SL-U. As shown in FIG. 11, if it is sensed that M (M<N) RB sets out of N RB sets become idle immediately before the first starting symbol in the slot for transmission on the M RB sets, while the channel access procedure on the other N-M RB sets is still in progress waiting for the sensing result on the additional starting symbol, the corresponding resource indication / reservation in SCI and / or MAC-CE may be extended / introduced based on channel differences in consideration of the following elements. New content may be introduced into 3GPP TS as follows. TIFF0007917060000005.tif94164

[0074] In some embodiments, the allocated interlace index (5 or 6 bits) may be common for all RB sets and all reservations. Alternatively, separate interlace indices may be indicated for each RB set and / or each reservation. If the higher layer parameter useInterlacePSCCH-PSSCH / useInterlaceSL is not configured, the interlace index indication field is omitted and 0 bits are required. As shown in FIG. 12, based on the independent channel access procedure on each RB set, the CO indication may be indicated per RB set. Also, given an RB set, separate COs may be indicated in association with each reservation.

[0075] In some embodiments, for other conventional information such as resource reservation period, modulation and coding scheme, and additional MCS table indicator, these parameters may be common for all RB sets and all reservations. Alternatively, these parameters may be indicated separately for each RB set and / or for each reservation.

[0076] For M RB sets having transmissions from a first start symbol, the corresponding SCI may be transmitted through only one RB set, which may be the lowest RB set among the M RB sets in the frequency domain, or an RB set randomly selected from the M RB sets. Alternatively, as shown in Figure 13A, a single SCI should carry all resource indications / reservations on all M RB sets, and the information associated with each RB set may vary. Alternatively, as shown in Figure 13B, the performance of SCI reception for Rx UE may be improved by diversity reception by applying the SCI similarly to all M RB sets. For NM RB sets having transmissions from additional start symbols, the SCI corresponding to the M RB sets may be shared, except for the CO indication. Alternatively, separate SCIs for the NM RB sets may be shown for each RB set. Same RB set for each reservation

[0077] In some embodiments, multiple spectral sections are the same for at least one reserved resource.

[0078] For example, after sensing N sets of RBs that will be idle for transmission on all RB sets (from the same or different start symbols in a slot), the corresponding resource indications / reservations in the SCI and / or MAC-CE may be extended / introduced based on channel differences to transmit on the same RB set across consecutive slots within a maximum CO time. New content may be introduced within the 3GPP TS as follows: TIFF0007917060000006.tif148162

[0079] In some embodiments, the assigned interlace index (5 or 6 bits) may be common to all RB sets and all reservations. Alternatively, separate interlace indices may be indicated for each RB set and / or each reservation. If the upper-layer parameters useInterlacePSCCH-PSSCH / useInterlaceSL are not set, the interlace index indicator field is omitted and 0 bits are required. Based on independent channel access procedures and / or different start symbols / start points on each RB set, the CO indicator may be indicated for each RB set. Alternatively, a common CO indicator may be indicated for all RB sets by a unified channel access procedure and aligned start points on all RB sets. Furthermore, given RB sets, separate COs may be indicated in relation to each reservation.

[0080] In some embodiments, with respect to other conventional information, such as resource reservation periods, modulation and encoding schemes, and additional MCS table indicators, these parameters may be common to all RB sets and all reservations. Alternatively, these parameters may be shown separately for each RB set and / or for each reservation.

[0081] In some embodiments, the SCI may be transmitted via only one RB set, which may be the lowest (or randomly selected) RB set among M RB sets having transmissions from a first start symbol. Alternatively, the SCI may be applied equally to all M RB sets. For NM RB sets having transmissions from additional start symbols, the SCI corresponding to the M RB sets may be shared, except for the CO instruction. Alternatively, separate SCIs for the NM RB sets may be indicated for each RB set.

[0082] Figure 14 shows a flowchart of an exemplary method 1400 implemented in a first terminal device 110 according to some exemplary embodiments of the present disclosure. For illustrative purposes, the method 1400 will be described with reference to Figures 1 and 4 from the perspective of the first terminal device 110.

[0083] In block 1410, the first terminal device 110 senses multiple spectral sections that are idle for at least one sidelink transmission between the first terminal device 110 and the second terminal device 120, which are operating on an unlicensed spectrum. In block 1420, the first terminal device transmits information indicating the multiple spectral sections to the second terminal device 120 for resource allocation.

[0084] In some embodiments, the information includes instructions determined based on the number of resource reservations and the number of spectral sections in the resource pool, wherein the instructions pertain to a plurality of consecutive spectral sections among the plurality of spectral sections. Transmissions on the plurality of consecutive spectral sections have start symbols aligned within sidelink slots.

[0085] In some embodiments, the information includes instructions determined based on the number of spectral sections in a resource pool, the instructions relating to a plurality of discontinuous spectral sections among the plurality of spectral sections, and the transmissions on the plurality of discontinuous spectral sections have start symbols aligned within slots.

[0086] In some embodiments, the information includes instructions determined based on the number of spectral sections in a resource pool, the instructions relating to a plurality of discontinuous spectral sections among the plurality of spectral sections. A transmission on a plurality of discontinuous spectral sections has a first start symbol and one or more additional start symbols following the first start symbol. The information further indicates a subset of the plurality of discontinuous spectral sections for which the transmission has one or more additional start symbols.

[0087] In some embodiments, the multiple spectral sections are the same for at least one reserved resource. The information further indicates indices of multiple interlaced spectra within each of the multiple spectral sections, and the indicated indices of multiple interlaced spectra are common for at least one of the multiple spectral sections and that at least one reserved resource.

[0088] In some embodiments, the information further individually indicates multiple interlaced spectra within each of multiple spectral sections. The information further individually indicates multiple interlaced spectra within each of at least one resource reservation. The information includes at least one channel occupancy (CO) indication for said at least one sidelink transmission.

[0089] In some embodiments, each of the at least one CO instruction includes at least a channel occupancy start instruction and a remaining channel occupancy duration instruction. The at least one CO instruction includes a CO instruction common to at least one of a plurality of spectral sections and at least one resource reservation. The at least one CO instruction includes a plurality of CO instructions used to indicate the CO separately for the plurality of spectral sections. The information further includes, for each of the plurality of spectral sections, the resource reservation period, M as parameters. CS, Alternatively, show at least one of the additional MCS table indicators separately.

[0090] In some embodiments, information is transmitted via a selected spectral section from among multiple spectral sections. The selected spectral section is the lowest spectral section in the frequency domain or a randomly selected spectral section from among the multiple spectral sections. The information is transmitted via multiple spectral sections, and each spectral section carries the corresponding portion of the information associated with that spectral section. The information is contained within Sidelink Control Information (SCI) and optionally within Medium Access Control (MAC) Control Element (CE).

[0091] Figure 15 shows a flowchart of an exemplary method 1500 implemented in a second terminal device 120, according to some exemplary embodiments of the present disclosure. For illustrative purposes, the method 1500 will be described with reference to Figures 1 and 4 from the perspective of the second terminal device 120.

[0092] In block 1510, the second terminal device 120 receives information from the first terminal device 110 indicating multiple spectral sections for resource allocation. In block 1520, the second terminal device 120 performs at least one sidelink transmission with the first terminal device 110 over multiple spectral sections within the unlicensed spectrum.

[0093] In some embodiments, the information includes instructions determined based on the number of resource reservations and the number of spectral sections in the resource pool, wherein the instructions pertain to a plurality of consecutive spectral sections among the plurality of spectral sections. Transmissions on the plurality of consecutive spectral sections have a start symbol aligned within a sidelink slot.

[0094] In some embodiments, the information includes instructions determined based on the number of spectral sections in the resource pool, and such instructions pertain to a plurality of discontinuous spectral sections among the plurality of spectral sections. A transmission on a plurality of discontinuous spectral sections has an aligned start symbol in a slot. The information includes instructions determined based on the number of spectral sections in the resource pool, and such instructions pertain to a plurality of discontinuous spectral sections among the plurality of spectral sections. A transmission on a plurality of discontinuous spectral sections has a first start symbol and one or more additional start symbols following the first start symbol. The information further indicates a subset of spectral sections in which a transmission has one or more additional start symbols.

[0095] In some embodiments, the multiple spectral sections are the same for at least one reserved resource. The information further indicates indices of multiple interlaced spectra within each of the multiple spectral sections, and the indicated indices of multiple interlaced spectra are common for at least one of the multiple spectral sections and that at least one reserved resource. The information further indicates multiple interlaced spectra within each of the multiple spectral sections individually.

[0096] In some embodiments, the information further individually indicates multiple interlaced spectra within each of the at least one reserved resource. The information includes at least one channel occupancy (CO) instruction for the at least one sidelink transmission. Each of the at least one CO instruction includes at least a channel occupancy start point instruction and a remaining channel occupancy duration instruction.

[0097] In some embodiments, the at least one CO instruction includes a CO instruction common to at least one of a plurality of spectral sections and the at least one resource reservation. The at least one CO instruction includes a plurality of CO instructions used to indicate the CO separately for the plurality of spectral sections. The information further includes, for each of the plurality of spectral sections, the resource reservation period, M as a parameter. CS, Alternatively, show at least one of the additional MCS table indicators separately.

[0098] In some embodiments, information is transmitted via a selected spectral section from among multiple spectral sections. The selected spectral section is the lowest spectral section among the multiple spectral sections, or a randomly selected spectral section. The information is transmitted via multiple spectral sections, and each spectral section carries the corresponding portion of the information associated with that spectral section. The information is contained within Sidelink Control Information (SCI), and optionally within Medium Access Control (MAC) - Control Element (CE).

[0099] Figure 16 is a schematic block diagram of a device 1600 suitable for implementing some embodiments of the present disclosure. Device 1600 may be considered as another exemplary embodiment of terminal devices 110, 120 and network device 130 as shown in Figure 1. Thus, device 1600 may be implemented in or as at least a part of the above-mentioned network device or terminal device.

[0100] As illustrated, the device 1600 comprises a processor 1610, a memory 1620 coupled to the processor 1610, a suitable transmitter (TX) and receiver (RX) 1640 coupled to the processor 1610, and a communication interface coupled to the TX / RX 1640. The memory 1620 stores at least a portion of the program 1630. The TX / RX 1640 is used for bidirectional communication. The TX / RX 1640 has at least one antenna to facilitate communication, although the access node mentioned herein may actually have multiple antennas. The communication interface may represent any interface necessary for communication with other network elements, such as an X2 interface for bidirectional communication between gNBs or eNBs, an S1 interface for communication between a Mobility Management Entity (MME) / Serving Gateway (S-GW) and a gNB or eNB, an Un interface for communication between a gNB or eNB and a Relay Node (RN), or a Uu interface for communication between a gNB or eNB and a terminal device.

[0101] It is assumed that program 1630 includes program instructions that, when executed by the associated processor 1610, enable the device 1600 to operate according to embodiments of the present disclosure, as described herein with reference to Figures 2 to 15. These embodiments may be implemented by computer software executable by the processor 1610 of the device 1600, by hardware, or by a combination of software and hardware. The processor 1610 may be configured to implement various embodiments of the present disclosure. Furthermore, a combination of processor 510 and memory 520 may form processing means 1650 suitable for implementing various embodiments of the present disclosure.

[0102] Memory 1620 may be of any type suitable for a local technology network, and may also be implemented using any suitable data storage technology, such as non-temporary computer-readable storage media, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. Although only one memory 1620 is shown within device 1600, the device Within 1600 It may have several physically different memory modules. The processor 1610 may be any type suitable for a local technology network and may include, in non-limiting examples, one or more of a general-purpose computer, a dedicated computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multicore processor architecture. The device 1600 may have multiple processors, for example, application-specific integrated circuit chips that are temporally dependent on a clock that synchronizes the main processor.

[0103] In some embodiments, the terminal device includes a circuit configured to perform methods 1400 and / or 1500.

[0104] The components included in the equipment and / or apparatus of this disclosure may be implemented in various ways, including software, hardware, firmware, or any combination thereof. In one embodiment, one or more units can be implemented using software and / or firmware, such as machine-executable instructions stored on a storage medium. In addition to, or as an alternative to, machine-executable instructions, some or all of the units in the equipment and / or apparatus may be implemented at least partially by one or more hardware logic components. Exemplary types of usable hardware logic components include, but are not limited to, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), system-on-a-chip systems (SOCs), and complex programmable logic devices (CPLDs).

[0105] Overall, various embodiments of the Disclosure may be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. Some embodiments may be implemented in hardware, while others may be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device. Although various embodiments of the Disclosure are illustrated and described using block diagrams, flowcharts, or any other pictorial representation, it should be understood that the blocks, devices, systems, technical terminals, or methods described herein may be implemented, in non-limiting examples, in hardware, software, firmware, dedicated circuitry or logic, general-purpose hardware or controllers or other computing devices, or any combination thereof.

[0106] This disclosure also provides at least one computer program product tangibly stored on a non-temporary computer-readable storage medium. The computer program product includes computer-executable instructions, such as instructions contained in a program module, which are executed within a device on a target real or virtual processor to perform the processes or methods described above with reference to any one of Figures 2 to 4. Generally, a program module includes routines, programs, libraries, objects, classes, components, data structures, etc., that perform a specific task or realize a specific abstract data type. In various embodiments, the functions of program modules may be combined or separated among program modules as needed. The machine-executable instructions of a program module may be executed within a local or distributed device. In a distributed device, program modules may reside in both local and remote storage media.

[0107] Program code for performing the methods of this disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a dedicated computer, or other programmable data processing device, and when executed by the processor or controller, the program code may implement the functions / operations specified in the flowcharts and / or block diagrams. The program code may run entirely on a machine, partially on a machine, as an independent software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0108] The program code described above may be implemented on a machine-readable medium, which may be any tangible medium that can contain or store programs used by or associated with an instruction execution system, device, or apparatus. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or apparatus, or any suitable combination of the aforementioned mediums. More specific examples of machine-readable storage media may include electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above.

[0109] While the operations have been described in a specific order, it should not be understood that, in order to obtain the desired results, these operations must be performed in the specific order shown, or in a sequential order, or that all of the described operations must be performed. In some cases, multitasking and parallel processing may be advantageous. Similarly, while details of several specific embodiments are included in the above discussion, these should not be interpreted as limitations on the scope of this disclosure, but rather as descriptions of features that may be specific to those embodiments. Some features described in the context of individual embodiments may be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may be implemented separately in multiple embodiments, or in any appropriate subcombination.

[0110] While this disclosure has been described in language specific to structural features and / or methodological behavior, it should be understood that the disclosure as defined in the attached claims is not necessarily limited to the specific features or behaviors described above. Rather, the specific features and behaviors described above are disclosed as exemplary forms of implementing the claims.

[0111] In short, embodiments of this disclosure can provide the following solutions.

[0112] The communication method includes, in a first terminal device, sensing a plurality of spectral sections that are idle for at least one sidelink transmission between the first terminal device and a second terminal device operating in an unlicensed spectrum, and transmitting information indicating the plurality of spectral sections to the second terminal device for resource allocation.

[0113] In some embodiments, the information includes instructions determined based on the number of resource reservations and the number of the plurality of spectral sections in the resource pool, the instructions relating to a plurality of consecutive spectral sections among the plurality of spectral sections, and the transmissions on the plurality of consecutive spectral sections have start symbols aligned in sidelink slots.

[0114] In some embodiments, the information includes instructions determined based on the number of the plurality of spectral sections in the resource pool, the instructions relating to a plurality of discontinuous spectral sections among the plurality of spectral sections, and the transmissions on the plurality of discontinuous spectral sections have start symbols aligned within sidelink slots.

[0115] In some embodiments, the information includes instructions determined based on the number of the plurality of spectral sections in the resource pool, the instructions relating to a plurality of discontinuous spectral sections among the plurality of spectral sections, and a transmission on the plurality of discontinuous spectral sections having a first start symbol and one or more additional start symbols after the first start symbol in a sidelink slot, and the information further indicates a subset of the plurality of discontinuous spectral sections for which the transmission has one or more additional start symbols.

[0116] In some embodiments, the plurality of spectral sections are the same for at least one reserved resource.

[0117] In some embodiments, the information further indicates indices of multiple interlaced spectra within each of the plurality of spectral sections, wherein the indicated indices of the plurality of interlaced spectra are common to at least one of the plurality of spectral sections and at least one reserved resource.

[0118] In some embodiments, the information further shows, individually, multiple interlaced spectra within each of the multiple spectral sections.

[0119] In some embodiments, the information further individually shows multiple interlaced spectra within each of at least one reserved resource.

[0120] In some embodiments, the information includes at least one channel occupancy (CO) instruction for the at least one sidelink transmission, the CO instruction including at least a channel occupancy start point instruction and a remaining channel occupancy duration instruction.

[0121] In some embodiments, the at least one CO instruction includes a CO instruction common to at least one of the plurality of spectral sections and at least one reserved resource.

[0122] In some embodiments, the at least one CO indicator includes a plurality of CO indicators used to indicate CO separately for the plurality of spectral sections.

[0123] In some embodiments, the information further individually indicates, for each of the plurality of spectral sections, at least one of the following as parameters: resource reservation period, modulation and coding scheme (MCS), or additional MCS table indicators.

[0124] In some embodiments, transmitting the information includes transmitting the information through a selected spectral section from among the plurality of spectral sections.

[0125] In some embodiments, the selected spectral section is the lowest spectral section in the frequency domain among the plurality of spectral sections, or a randomly selected spectral section.

[0126] In some embodiments, the information is transmitted through the plurality of spectral sections, and each spectral section carries the corresponding portion of the information associated with that spectral section.

[0127] In some embodiments, the information is included in Sidelink Control Information (SCI) and optionally in Medium Access Control (MAC) Control Element (CE).

[0128] The communication method includes, in the second terminal device, receiving information from the first terminal device indicating a plurality of spectral sections for resource allocation, and performing at least one sidelink transmission with the first terminal device on the plurality of spectral sections within the unlicensed spectrum.

[0129] In some embodiments, the information includes instructions determined based on the number of resource reservations and the number of the plurality of spectral sections in the resource pool, the instructions relating to a plurality of consecutive spectral sections among the plurality of spectral sections, and the transmissions on the plurality of consecutive spectral sections have start symbols aligned in sidelink slots.

[0130] In some embodiments, the information includes instructions determined based on the number of the plurality of spectral sections in the resource pool, the instructions relating to a plurality of discontinuous spectral sections among the plurality of spectral sections, and the transmissions on the plurality of spectral sections have start symbols aligned within sidelink slots.

[0131] In some embodiments, the information includes instructions determined based on the number of the plurality of spectral sections in the resource pool, the instructions relating to a plurality of discontinuous spectral sections among the plurality of spectral sections, and a transmission on the plurality of discontinuous spectral sections having a first start symbol and one or more additional start symbols after the first start symbol in a sidelink slot, and the information further indicates a subset of the plurality of spectral sections for which the transmission has one or more additional start symbols.

[0132] In some embodiments, the plurality of spectral sections are the same for at least one reserved resource.

[0133] In some embodiments, the information further indicates indices of multiple interlaced spectra within each of the plurality of spectral sections, wherein the indicated indices of the plurality of interlaced spectra are common to at least one of the plurality of spectral sections and at least one reserved resource.

[0134] In some embodiments, the information further shows, individually, multiple interlaced spectra within each of the multiple spectral sections.

[0135] In some embodiments, the information further individually shows multiple interlaced spectra within each of at least one reserved resource.

[0136] In some embodiments, the information includes at least one channel occupancy (CO) instruction for the at least one sidelink transmission, each of which includes at least a channel occupancy start point instruction and a remaining channel occupancy duration instruction.

[0137] In some embodiments, the at least one CO instruction includes a CO instruction common to at least one of the plurality of spectral sections and at least one reserved resource.

[0138] In some embodiments, the at least one CO indicator includes a plurality of CO indicators used to indicate CO separately for the plurality of spectral sections.

[0139] In some embodiments, the information further individually indicates, for each of the plurality of spectral sections, at least one of the following as parameters: resource reservation period, modulation and coding scheme (MCS), or additional MCS table indicators.

[0140] In some embodiments, transmitting the information includes transmitting the information through a selected spectral section from among the plurality of spectral sections.

[0141] In some embodiments, the selected spectral section is the lowest spectral section in the frequency domain among the plurality of spectral sections, or a randomly selected spectral section.

[0142] In some embodiments, the information is transmitted through the plurality of spectral sections, and each spectral section carries the corresponding portion of the information associated with that spectral section.

[0143] In some embodiments, the information is contained within Sidelink Control Information (SCI) or within Medium Access Control (MAC)-Control Element (CE).

[0144] The first terminal device comprises a processor and a memory storing computer program code, wherein the memory and the computer program code are configured to cause the terminal device to execute the method described in any one of the above methods using the processor.

[0145] The second terminal device comprises a processor and a memory storing computer program code, wherein the memory and the computer program code are configured to use the processor to cause the network device to execute the method described in any one of the above methods.

[0146] The computer-readable medium, when executed by the device's processor, stores instructions causing the device to perform the method described in any one of the above-described methods.

Claims

1. A means for transmitting sidelink control information (SCI) including frequency resource allocation information, Based on the fact that the upper layer parameters are set to Interlaced Resource Blocks (RBs) for Physical Sidelink Control Channel (PSCCH) / Physical Sidelink Shared Channel (PSSCH) transmission, a first number of bits in the frequency resource allocation information provide RB set allocations, and the bits are associated with the setting value of the maximum number of reserved PSCCH / PSSCH resources for the means for transmission, Means for performing the PSSCH transmission associated with the SCI, In response to the simultaneous commencement of the PSCCH / PSSCH transmission on all of the multiple channels on which the PSCCH / PSSCH transmission is performed, means for accessing the multiple channels, Means for initiating channel occupancy (CO) on the aforementioned multiple channels using a channel access procedure, Equipped with, The SCI further includes a channel occupancy (CO) instruction, and the CO time for each channel is the same. The first terminal device.

2. The first number is when the value of the upper layer parameter sl-MaxNumPerReserve is set to 2. Determined by, or when the value of the upper layer parameter sl-MaxNumPerReserve is set to 3, This was determined by, and here, This is the number of RB sets in the resource pool. The first terminal device according to claim 1.

3. Based on the upper layer parameters being set to interlace RB for PSCCH / PSSCH transmission, the applied interlace index is the same within different RB sets. The first terminal device according to claim 1.

4. The system further comprises means for determining frequency resources for the PSSCH transmission, If sl-MaxNumPerReserve is 2, then the frequency resource indicator value (FRIV) at the RB set granularity is as follows: And, If sl-MaxNumPerReserve is 3, then for FRIV at RB set particle size, And, Here, This represents the starting RBset index for the second resource, This represents the starting RBset index for the third resource, This represents the number of RB sets scheduled or configured for transmission. This is the number of RB sets in the resource pool. The first terminal device according to claim 2.

5. A means for receiving sidelink control information (SCI) including frequency resource allocation information, Based on the fact that the upper layer parameters are set to Interlaced Resource Blocks (RBs) for Physical Sidelink Control Channel (PSCCH) / Physical Sidelink Shared Channel (PSSCH) transmission, a first number of bits in the frequency resource allocation information provide RB set allocations, and the bits are associated with the receiving means of the maximum number of reserved PSCCH / PSSCH resources. Means for performing PSSCH reception based on the aforementioned SCI, Equipped with, The SCI further includes a Channel Occupancy (CO) instruction, where the CO time for each channel is the same. The second terminal device.

6. The first number is when the value of the upper layer parameter sl-MaxNumPerReserve is set to 2. Determined by, or when the value of the upper layer parameter sl-MaxNumPerReserve is set to 3, This was determined by, and here, This is the number of RB sets in the resource pool. The second terminal device according to claim 5.

7. Based on the upper layer parameters being set to interlace RB for PSCCH / PSSCH transmission, the applied interlace index is the same within different RB sets. The second terminal device according to claim 5.

8. The system further comprises means for determining frequency resources for the PSSCH transmission, If sl-MaxNumPerReserve is 2, then the frequency resource indicator value (FRIV) at the RB set granularity is as follows: And, If sl-MaxNumPerReserve is 3, then for FRIV at RB set particle size, And, Here, This represents the starting RBset index for the second resource, This represents the starting RBset index for the third resource, This represents the number of RB sets scheduled or configured for transmission. This is the number of RB sets in the resource pool. The second terminal device according to claim 6.

9. A method performed by a first terminal device, This involves transmitting sidelink control information (SCI), which includes frequency resource allocation information. Based on the fact that the upper layer parameters are set to Interlaced Resource Blocks (RBs) for Physical Sidelink Control Channel (PSCCH) / Physical Sidelink Shared Channel (PSSCH) transmission, a first number of bits in the frequency resource allocation information provide RB set allocations, and these bits are associated with a setting value for the maximum number of reserved PSCCH / PSSCH resources. To perform the PSSCH transmission associated with the SCI, Accessing the multiple channels in response to the simultaneous commencement of the PSCCH / PSSCH transmission on all of the multiple channels on which the PSCCH / PSSCH transmission is performed, Starting channel occupancy (CO) on the aforementioned multiple channels using a channel access procedure, Includes, The SCI further includes a channel occupancy (CO) instruction, and the CO time for each channel is the same. method.

10. The first number is when the value of the upper layer parameter sl-MaxNumPerReserve is set to 2. Determined by, or when the value of the upper layer parameter sl-MaxNumPerReserve is set to 3, This was determined by, and here, This is the number of RB sets in the resource pool. The method according to claim 9.

11. Based on the upper layer parameters being set to interlace RB for PSCCH / PSSCH transmission, the applied interlace index is the same within different RB sets. The method according to claim 9.

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