Method and apparatus for sensing in multi-beam-based device-to-device communication

Abstract

Proposed is an operation method of a first device (100) in a wireless communication system. The method may comprise the steps of: in at least one first resource within a sensing window for resource selection, receiving at least one control channel transmission on the basis of a second beam different from a first beam; and on the basis of the at least one control channel transmission being received on the basis of the second beam, excluding at least one second resource related to the at least one first resource from a resource set related to the device-to-device transmission.

Description

Method and device for sensing in multi-beam based terminal-to-terminal communication

[0001] The present disclosure relates to a wireless communication system.

[0002] 5G NR, the successor to LTE (long-term evolution), is a new clean-slate mobile communications system characterized by high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, from low-frequency bands below 1 GHz, mid-frequency bands between 1 GHz and 10 GHz, and high-frequency (millimeter wave) bands above 24 GHz.

[0003] The 6G (wireless communication) system aims to achieve (i) very high data rates per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) low energy consumption for battery-free Internet of Things (IoT) devices, (vi) ultra-reliable connectivity, and (vii) connected intelligence with machine learning capabilities. The vision of the 6G system can be divided into four aspects: intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity, and the 6G system can satisfy the requirements as shown in Table 1 below. For example, Table 1 can represent an example of the requirements of a 6G system.

[0004] Peak data rate per device 1 Tbps E2E latency 1 ms Max spectral efficiency 100 bps / Hz Mobility support Up to 1000 km / hr Satellite integration Fully AI Fully Autonomous vehicles Fully XR Fully Haptic communications Fully

[0005] According to one embodiment of the present disclosure, a method for a first device to perform wireless communication may be provided. For example, the method may include: receiving, in at least one first resource within a sensing window for resource selection, at least one control channel transmission based on a second beam different from the first beam, wherein the first beam is a first receive beam or a default receive beam corresponding to a transmit beam to be used for inter-device transmission; and excluding, based on the at least one control channel transmission being received based on the second beam, at least one second resource associated with the at least one first resource from a resource set for determining a transmission resource to be used for the inter-device transmission.

[0006] According to one embodiment of the present disclosure, a first device for performing wireless communication may be provided. For example, the first device may include: at least one transceiver; at least one processor; and at least one memory executably connected to the at least one processor and storing instructions that cause the first device to perform operations based on being executed by the at least one processor. For example, the operations may include: receiving, in at least one first resource within a sensing window for resource selection, at least one control channel transmission based on a second beam different from a first beam, wherein the first beam is a first receive beam or a default receive beam corresponding to a transmit beam to be used for inter-device transmission; and excluding, based on the at least one control channel transmission being received based on the second beam, at least one second resource associated with the at least one first resource from a resource set for determining a transmission resource to be used for the inter-device transmission.

[0007] According to one embodiment of the present disclosure, a device configured to control a first terminal may be provided. For example, the device may include: at least one processor; and at least one memory executable to the at least one processor, and having instructions recorded thereon that cause the first terminal to perform operations based on being executed by the at least one processor. For example, the operations may include: receiving, in at least one first resource within a sensing window for resource selection, at least one control channel transmission based on a second beam different from a first beam, wherein the first beam is a first receive beam or a default receive beam corresponding to a transmit beam to be used for inter-UE transmission; and excluding, based on the at least one control channel transmission being received based on the second beam, at least one second resource associated with the at least one first resource from a resource set for determining a transmission resource to be used for the inter-UE transmission.

[0008] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, may cause a first device to: receive at least one control channel transmission based on a second beam different from a first beam in at least one first resource within a sensing window for resource selection, wherein the first beam is a first receive beam or a default receive beam corresponding to a transmit beam to be used for inter-device transmission; and exclude at least one second resource associated with the at least one first resource from a resource set for determining a transmission resource to be used for the inter-device transmission, based on the at least one control channel transmission being received based on the second beam.

[0009] According to one embodiment of the present disclosure, a method for a second device to perform wireless communication may be provided. For example, the method comprises: receiving an inter-device transmission from a first device based on a transmission resource, wherein the transmission resource is selected from a set of candidate resources excluding at least one second resource, wherein the at least one second resource is at least one resource associated with at least one first resource on which a first sensing is performed based on a second beam that is not covered by the first beam, and wherein the first beam may be a first receive beam or a default receive beam of the first device corresponding to a transmit beam to be used for the inter-device transmission.

[0010] According to one embodiment of the present disclosure, a second device performing wireless communication may be provided. For example, the second device may include: at least one transceiver; at least one processor; and at least one memory executably connected to the at least one processor and having instructions recorded thereon that cause the second device to perform operations based on being executed by the at least one processor. For example, the operations may include: receiving an inter-device transmission from a first device based on a transmission resource, wherein the transmission resource is selected from a set of candidate resources excluding at least one second resource, wherein the at least one second resource is at least one resource associated with at least one first resource on which a first sensing is performed based on a second beam that is not covered by a first beam, and wherein the first beam may be a first receive beam or a default receive beam of the first device corresponding to a transmit beam to be used for the inter-device transmission.

[0011] FIG. 1 illustrates a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure.

[0012] FIG. 2 illustrates an electromagnetic spectrum according to one embodiment of the present disclosure.

[0013] FIG. 3 illustrates an example of a typical scenario of an NTN based on a transparent payload, according to one embodiment of the present disclosure.

[0014] FIG. 4 illustrates an example of a typical scenario of an NTN based on a regenerative payload, according to one embodiment of the present disclosure.

[0015] FIG. 5 illustrates an example of a sensing operation according to one embodiment of the present disclosure.

[0016] FIG. 6 illustrates a slot structure of a frame according to one embodiment of the present disclosure.

[0017] FIG. 7 illustrates an example of a BWP according to one embodiment of the present disclosure.

[0018] FIG. 8 illustrates a procedure for a terminal to perform V2X or SL communication according to a resource allocation mode, according to one embodiment of the present disclosure.

[0019] FIG. 9 illustrates a transmission spatial filter and a reception spatial filter according to an embodiment of the present disclosure.

[0020] FIG. 10 illustrates a method for determining whether a receiving spatial filter covers a transmitting spatial filter, according to one embodiment of the present disclosure.

[0021] FIG. 11 illustrates a basic reception beam that can be used by a receiving terminal according to an embodiment of the present disclosure.

[0022] FIG. 12 illustrates a set of (non-)preferred resources configured considering beam directions used within a sensing window according to one embodiment of the present disclosure.

[0023] FIG. 13 illustrates a set of (non-)preferred resources configured considering beam directions within a resource selection interval according to one embodiment of the present disclosure.

[0024] FIG. 14 illustrates a procedure in which a first device performs wireless communication according to an embodiment of the present disclosure.

[0025] FIG. 15 illustrates a procedure for a second device to perform wireless communication according to an embodiment of the present disclosure.

[0026] Fig. 16 illustrates a communication system (1) according to one embodiment of the present disclosure.

[0027] FIG. 17 illustrates a wireless device according to one embodiment of the present disclosure.

[0028] FIG. 18 illustrates a signal processing circuit for a transmission signal according to one embodiment of the present disclosure.

[0029] FIG. 19 illustrates a wireless device according to an embodiment of the present disclosure.

[0030] FIG. 20 illustrates a portable device according to one embodiment of the present disclosure.

[0031] FIG. 21 illustrates a vehicle or autonomous vehicle according to one embodiment of the present disclosure.

[0032] As used herein, "A or B" can mean "only A," "only B," or "both A and B." In other words, as used herein, "A or B" can be interpreted as "A and / or B." For example, as used herein, "A, B or C" can mean "only A," "only B," "only C," or "any combination of A, B and C."

[0033] As used herein, a slash ( / ) or a comma can mean "and / or." For example, "A / B" can mean "A and / or B." Accordingly, "A / B" can mean "only A," "only B," or "both A and B." For example, "A, B, C" can mean "A, B, or C."

[0034] In this specification, "at least one of A and B" may mean "only A", "only B" or "both A and B". Additionally, in this specification, the expressions "at least one of A or B" or "at least one of A and / or B" may be interpreted identically to "at least one of A and B".

[0035] Additionally, in this specification, “at least one of A, B and C” can mean “only A,” “only B,” “only C,” or “any combination of A, B and C.” Additionally, “at least one of A, B or C” or “at least one of A, B and / or C” can mean “at least one of A, B and C.”

[0036] Additionally, parentheses used herein may mean "for example." Specifically, when indicated as "control information (PDCCH)", "PDCCH" may be proposed as an example of "control information." In other words, "control information" in this specification is not limited to "PDCCH," and "PDCCH" may be proposed as an example of "control information." Furthermore, even when indicated as "control information (i.e., PDCCH)", "PDCCH" may be proposed as an example of "control information."

[0037] In the following explanation, ‘when, if, in case of’ can be replaced with ‘based on’.

[0038] Technical features individually described in a single drawing in this specification may be implemented individually or simultaneously.

[0039] In this specification, higher layer parameters may be parameters that are set for the terminal, preset, or predefined. For example, a base station or network may transmit higher layer parameters to the terminal. For example, higher layer parameters may be transmitted via radio resource control (RRC) signaling or medium access control (MAC) signaling.

[0040] In this specification, "configured or defined" may be interpreted as being configured or preset to a device through predefined signaling (e.g., SIB, MAC, RRC) from a base station or network. In this specification, "configured or defined" may be interpreted as being preset to a device.

[0041] The technology proposed in this specification can be used in various wireless communication systems such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), and SC-FDMA (single carrier frequency division multiple access). CDMA can be implemented with wireless technologies such as UTRA (universal terrestrial radio access) or CDMA2000. TDMA can be implemented with wireless technologies such as GSM (global system for mobile communications) / GPRS (general packet radio service) / EDGE (enhanced data rates for GSM evolution). OFDMA can be implemented with wireless technologies such as IEEE (Institute of Electrical and Electronics Engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, E-UTRA (evolved UTRA), LTE (long term evolution), and 5G NR.

[0042] The technology proposed in this specification can be implemented with 6G wireless technology and applied to various 6G systems. For example, 6G systems can have key factors such as enhanced mobile broadband (eMBB), ultra-reliable low latency communications (URLLC), massive machine-type communication (mMTC), artificial intelligence (AI) integrated communication, tactile internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion, and enhanced data security.

[0043] FIG. 1 illustrates a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure. The embodiment of FIG. 1 can be combined with various embodiments of the present disclosure.

[0044] New network characteristics in 6G may include:

[0045] - Satellite integrated network

[0046] - Connected Intelligence: Unlike previous generations of wireless communication systems, 6G is revolutionary, upgrading the wireless evolution from "connected objects" to "connected intelligence." AI can be applied at every stage of the communication process (or at every signal processing step, as described below).

[0047] - Seamless integration of wireless information and energy transfer

[0048] - Ubiquitous super 3D connectivity: Access to networks and core network functions of drones and very low Earth orbit satellites will create super 3D connectivity in 6G ubiquitous.

[0049] Some general requirements for the new network characteristics of 6G, such as the above, may be as follows:

[0050] - small cell networks

[0051] - Ultra-dense heterogeneous network

[0052] - High-capacity backhaul

[0053] - Radar technology integrated with mobile technology: High-precision localization (or location-based services) through communications is a key feature of 6G wireless communication systems. Therefore, radar systems will be integrated with 6G networks.

[0054] - Softwarization and virtualization

[0055] Below, the core implementation technologies of the 6G system are described.

[0056] - Artificial Intelligence: Incorporating AI into communications can streamline and improve real-time data transmission. AI can use numerous analytics to determine how complex target tasks should be performed. This means AI can increase efficiency and reduce processing delays. Time-consuming tasks such as handovers, network selection, and resource scheduling can be performed instantly using AI. AI can also play a crucial role in machine-to-machine (M2M), machine-to-human, and human-to-machine communications. Furthermore, AI can facilitate rapid communication in brain-computer interfaces (BCIs). AI-based communication systems can be supported by metamaterials, intelligent structures, intelligent networks, intelligent devices, intelligent cognitive radios, self-sustaining wireless networks, and machine learning.

[0057] - THz communication (terahertz communication): Data rates can be increased by increasing the bandwidth. This can be achieved by utilizing sub-THz communication with a wide bandwidth and applying advanced massive MIMO technology. THz waves, also known as sub-millimeter waves, typically refer to the frequency range between 0.1 THz and 10 THz with corresponding wavelengths ranging from 0.03 mm to 3 mm. The 100 GHz to 300 GHz band (Sub-THz band) is considered a major portion of the THz band for cellular communications. Adding the Sub-THz band to the mmWave band will increase the capacity of 6G cellular communications. Among the defined THz bands, 300 GHz to 3 THz lies in the far infrared (IR) frequency band. While part of the optical band, the 300 GHz to 3 THz band lies at the boundary of the optical band, immediately following the RF band. Therefore, this 300 GHz to 3 THz band exhibits similarities to RF. Figure 2 illustrates the electromagnetic spectrum according to one embodiment of the present disclosure. The embodiment of FIG. 2 can be combined with various embodiments of the present disclosure. Key characteristics of THz communications include (i) widely available bandwidth to support very high data rates, and (ii) high path loss at high frequencies (highly directional antennas are essential). The narrow beamwidth generated by the highly directional antenna reduces interference. The small wavelength of THz signals allows for a much larger number of antenna elements to be integrated into devices and base stations operating in this band. This enables the use of advanced adaptive array technologies to overcome range limitations.

[0058] - Large-scale MIMO technology

[0059] - Hologram beamforming (HBF)

[0060] - Optical wireless technology

[0061] - Free-space optical transmission backhaul network (FSO backhaul network)

[0062] - Quantum communication

[0063] - Cell-free communication

[0064] - Integration of wireless information and power transmission

[0065] - Integration of wireless communication and sensing

[0066] - Integrated access and backhaul network

[0067] - Big data analysis

[0068] - Reconfigurable intelligent surface

[0069] - metaverse

[0070] - Blockchain

[0071] Unmanned aerial vehicles (UAVs): UAVs, or drones, will be a key element in 6G wireless communications. In most cases, high-speed data wireless connectivity can be provided using UAV technology. Base stations (BSs) can be installed on UAVs to provide cellular connectivity. UAVs may offer specific capabilities not found in fixed BS infrastructure, such as easy deployment, robust line-of-sight links, and controlled mobility. During emergencies such as natural disasters, deploying terrestrial communications infrastructure is not economically feasible and sometimes cannot provide services in volatile environments. UAVs can easily handle these situations. UAVs will become a new paradigm in wireless communications. This technology facilitates three fundamental requirements for wireless networks: enhanced mobile broadband (eMBB), URLLC, and mMTC. UAVs can also support various purposes, such as enhancing network connectivity, fire detection, disaster emergency services, security and surveillance, pollution monitoring, parking monitoring, and accident monitoring. Therefore, UAV technology is recognized as one of the most important technologies for 6G communications.

[0072] - Advanced air mobility (AAM): AAM is a higher concept than urban air mobility (UAM), which is an air transportation method available in urban areas, and can refer to a means of transportation that includes movement between regional hubs as well as urban areas.

[0073] - Autonomous driving (self-driving): V2X (vehicle to everything), a key element in building autonomous driving infrastructure, can be a technology that allows cars to communicate and share with various elements on the road for autonomous driving, such as vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) wireless communication. Fast transmission speeds and low-latency technologies are essential to maximize autonomous driving performance and ensure high safety. Furthermore, in the future, autonomous driving will go beyond simply providing warnings or guidance messages to drivers and may require active intervention in vehicle operation and direct control of the vehicle in dangerous situations. To this end, the amount of information that needs to be transmitted and received may become enormous, so 6G is expected to maximize autonomous driving with faster transmission speeds and lower latency than 5G.

[0074] - Non-terrestrial networks (NTN): NTN may refer to a network or network segment that uses radio frequency (RF) resources mounted on a satellite (or unmanned aerial system (UAS) platform). FIG. 3 illustrates an example of a typical NTN scenario based on a transparent payload according to an embodiment of the present disclosure. FIG. 4 illustrates an example of a typical NTN scenario based on a regenerative payload according to an embodiment of the present disclosure. The embodiments of FIG. 3 or FIG. 4 may be combined with various embodiments of the present disclosure. Referring to FIG. 3, a satellite (or UAS platform) may create a service link with a UE. The satellite (or UAS platform) may be connected to a gateway via a feeder link. The satellite may be connected to a data network via the gateway. A beam footprint may refer to an area where a signal transmitted by a satellite can be received. Referring to Figure 4, a satellite (or UAS platform) can establish a service link with a UE. A satellite (or UAS platform) connected to a UE can be connected to another satellite (or UAS platform) via an inter-satellite link (ISL). The other satellite (or UAS platform) can be connected to a gateway via a feeder link. Based on the playback payload, a satellite can be connected to a data network through another satellite and the gateway. If an ISL does not exist between a satellite and another satellite, a feeder link between the satellite and the gateway may be required. Figures 3 and 4 are merely examples of NTN scenarios, and NTN can be implemented based on various scenarios.For example, a satellite (or UAS platform) may implement a transparent or regenerative (with onboard processing) payload. For example, a satellite (or UAS platform) may generate multiple beams over a designated service area depending on the field of view of the satellite (or UAS platform). For example, the field of view of the satellite (or UAS platform) may vary depending on the onboard antenna diagram and minimum elevation angle. For example, a transparent payload may include radio frequency filtering, frequency conversion, and amplification. Therefore, the waveform signal repeated by the payload may not be altered. For example, a regenerative payload may include radio frequency filtering, frequency conversion and amplification, demodulation / decoding, switching and / or routing, and coding / modulation. For example, a regenerative payload may be substantially equivalent to equipping the satellite (or UAS platform) with all or part of the base station functionality.

[0075] - Integrated Sensing and Communication (ISAC): Wireless sensing is a technology that uses radio frequencies to determine the instantaneous linear velocity, angle, distance (range), etc. of an object, thereby obtaining information about the characteristics of the environment and / or objects within the environment. Because radio frequency sensing does not require a device to connect to the object through a network, it can provide a service for object positioning without a device. The ability to obtain range, velocity, and angle information from radio frequency signals can enable a wide range of new capabilities, such as various object detection, object recognition (e.g., vehicles, humans, animals, UAVs), and high-precision localization, tracking, and activity recognition. Wireless sensing services can provide information to a variety of industries (e.g., drones, smart homes, V2X, factories, railways, public safety, etc.), enabling applications such as intruder detection, assisted vehicle steering and navigation, trajectory tracking, collision avoidance, traffic management, and health and traffic management. In some cases, wireless sensing can utilize non-3GPP type sensors (e.g., radar, cameras) to further support 3GPP-based sensing. For example, the operation of a wireless sensing service, i.e., a sensing operation, may depend on the transmission, reflection, and scattering of wireless sensing signals. Therefore, wireless sensing may provide an opportunity to enhance existing communication systems from a communication network to a wireless communication and sensing network. FIG. 5 illustrates an example of a sensing operation according to an embodiment of the present disclosure. The embodiment of FIG. 5 may be combined with various embodiments of the present disclosure. Specifically, FIG. 5 (a) illustrates an example of sensing using a sensing receiver and a sensing transmitter located at the same location (e.g., monostatic sensing), and FIG. 5 (b) illustrates an example of sensing using a separated sensing receiver and a sensing transmitter (e.g., bistatic sensing).

[0076] The layers of the radio interface protocol between the terminal and the network can be divided into L1 (layer 1), L2 (layer 2), and L3 (layer 3) based on the three lower layers of the Open System Interconnection (OSI) standard model, which is widely known in communication systems. Among these, the physical layer belonging to layer 1 provides an information transfer service using a physical channel, and the RRC (Radio Resource Control) layer located in layer 3 controls radio resources between the terminal and the network. To this end, the RRC layer exchanges RRC messages between the terminal and the base station.

[0077] The physical layer provides information transmission services to higher layers using physical channels. The physical layer is connected to the upper layer, the Medium Access Control (MAC) layer, via a transport channel. Data travels between the MAC layer and the physical layer through the transport channel. Transport channels are classified based on how and with what characteristics data is transmitted over the wireless interface.

[0078] Data travels between different physical layers, i.e., between the physical layers of a transmitter and a receiver, via a physical channel. This physical channel can be modulated using Orthogonal Frequency Division Multiplexing (OFDM) and utilizes time and frequency as radio resources.

[0079] The MAC layer provides services to the upper layer, the radio link control (RLC) layer, through logical channels. The MAC layer provides mapping from multiple logical channels to multiple transport channels. Furthermore, the MAC layer provides logical channel multiplexing, which maps multiple logical channels to a single transport channel. The MAC sublayer provides data transmission services on logical channels.

[0080] The RLC layer performs the concatenation, segmentation, and reassembly of RLC Service Data Units (SDUs). To guarantee the various Quality of Service (QoS) required by radio bearers (RBs), the RLC layer provides three operating modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0081] The RRC (Radio Resource Control) layer is defined only in the control plane. The RRC layer is responsible for controlling logical channels, transport channels, and physical channels, related to the configuration, reconfiguration, and release of radio bearers. RB refers to a logical path provided by Layer 1 (physical layer or PHY layer) and Layer 2 (MAC layer, RLC layer, Packet Data Convergence Protocol (PDCP) layer, and Service Data Adaptation Protocol (SDAP) layer) for data transmission between the terminal and the network.

[0082] The functions of the PDCP layer in the user plane include the transmission of user data, header compression, and ciphering. The functions of the PDCP layer in the control plane include the transmission of control plane data and encryption / integrity protection.

[0083] The Service Data Adaptation Protocol (SDAP) layer is defined only in the user plane. It performs mapping between QoS flows and data radio bearers, marking QoS flow identifiers (IDs) within downlink and uplink packets, and more.

[0084] Establishing a Radio Bearer (RB) refers to the process of defining the characteristics of the radio protocol layer and channel to provide a specific service, and setting specific parameters and operating methods for each. RBs can be further divided into two types: the Signaling Radio Bearer (SRB) and the Data Radio Bearer (DRB). The SRB is used as a channel to transmit RRC messages in the control plane, while the DRB is used as a channel to transmit user data in the user plane.

[0085] When an RRC connection is established between the RRC layer of the terminal and the RRC layer of the base station, the terminal is in the RRC_CONNECTED state. Otherwise, it is in the RRC_IDLE state. For NR, the RRC_INACTIVE state is additionally defined, and a terminal in the RRC_INACTIVE state can maintain a connection with the core network while releasing the connection with the base station.

[0086] Downlink transmission channels that transmit data from the network to the terminal include the Broadcast Channel (BCH), which transmits system information, and the downlink Shared Channel (SCH), which transmits user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services may be transmitted through the downlink SCH or a separate downlink Multicast Channel (MCH). Meanwhile, uplink transmission channels that transmit data from the terminal to the network include the Random Access Channel (RACH), which transmits initial control messages, and the uplink Shared Channel (SCH), which transmits user traffic or control messages.

[0087] Logical channels that are located above the transport channel and are mapped to the transport channel include the Broadcast Control Channel (BCCH), Paging Control Channel (PCCH), Common Control Channel (CCCH), Multicast Control Channel (MCCH), and Multicast Traffic Channel (MTCH).

[0088] Radio frames can be used for uplink and downlink transmission. A radio frame has a length of 10 ms and can be defined as two 5 ms half-frames (HF). A half-frame can contain five 1 ms subframes (SF). A subframe can be divided into one or more slots, and the number of slots within a subframe can be determined by the subcarrier spacing (SCS). Each slot can contain 12 or 14 OFDM (A) symbols, depending on the cyclic prefix (CP).

[0089] When normal CP is used, each slot can contain 14 symbols. When extended CP is used, each slot can contain 12 symbols. Here, the symbols can include OFDM symbols (or CP-OFDM symbols), SC-FDMA (Single Carrier - FDMA) symbols (or DFT-s-OFDM (Discrete Fourier Transform-spread-OFDM) symbols).

[0090] Table 2 below shows the number of symbols per slot (N) depending on the SCS setting (u) when normal CP or extended CP is used. slot symb ), number of slots per frame (N frame,u slot ) and the number of slots per subframe (N subframe,u slot ) is an example.

[0091] CP type SCS (15*2 u )N slot symb N frame,u slot N subframe,u slot Normal CP15kHz (u=0)1410130kHz (u=1)1420260kHz (u=2)14404120kHz (u=3)14808240kHz (u=4)1416016Extended CP60kHz (u=2)12404

[0092] FIG. 6 illustrates a slot structure of a frame according to an embodiment of the present disclosure. The embodiment of FIG. 6 can be combined with various embodiments of the present disclosure.

[0093] Referring to FIG. 6, a slot includes multiple symbols in the time domain.

[0094] A carrier includes multiple subcarriers in the frequency domain. An RB (Resource Block) can be defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A BWP (Bandwidth Part) can be defined as multiple consecutive (P)RBs ((Physical) Resource Blocks) in the frequency domain, and can correspond to one numerology (e.g., SCS, CP length, etc.). A carrier can include up to N (e.g., 5) BWPs. Data communication can be performed through activated BWPs. Each element can be referred to as a Resource Element (RE) in the resource grid, and one complex symbol can be mapped to it.

[0095] A Bandwidth Part (BWP) can be a contiguous set of physical resource blocks (PRBs) for a given numerology. A PRB can be selected from a contiguous subset of common resource blocks (CRBs) for a given numerology on a given carrier.

[0096] FIG. 7 illustrates an example of a BWP according to an embodiment of the present disclosure. The embodiment of FIG. 7 can be combined with various embodiments of the present disclosure. In the embodiment of FIG. 7, it is assumed that there are three BWPs.

[0097] Referring to Figure 7, a common resource block (CRB) may be a carrier resource block numbered from one end of a carrier band to the other. Furthermore, a PRB may be a numbered resource block within each BWP. Point A may indicate a common reference point for the resource block grid.

[0098] BWP is point A, offset from point A (N startBWP ) and bandwidth (N size BWP ) can be set by. For example, point A can be an outer reference point of the PRB of a carrier where subcarrier 0 of all numerologies (e.g., all numerologies supported by the network on that carrier) aligns. For example, the offset can be the PRB spacing between the lowest subcarrier in a given numerology and point A. For example, the bandwidth can be the number of PRBs in a given numerology.

[0099] SLSS (Sidelink Synchronization Signal) is a SL (sidelink) specific sequence and may include PSSS (Primary Sidelink Synchronization Signal) and SSSS (Secondary Sidelink Synchronization Signal). The PSSS may be referred to as S-PSS (Sidelink Primary Synchronization Signal) and the SSSS may be referred to as S-SSS (Sidelink Secondary Synchronization Signal). For example, length-127 M-sequences may be used for S-PSS and length-127 Gold sequences may be used for S-SSS. For example, a terminal may detect an initial signal (signal detection) and obtain synchronization using S-PSS. For example, the terminal can obtain detailed synchronization using S-PSS and S-SSS and detect a synchronization signal ID.

[0100] PSBCH (Physical Sidelink Broadcast Channel) may be a (broadcast) channel that transmits basic (system) information that a terminal must know first before transmitting or receiving an SL signal. For example, the basic information may be information related to SLSS, duplex mode (DM), TDD UL / DL (Time Division Duplex Uplink / Downlink) configuration, resource pool-related information, type of application related to SLSS, subframe offset, broadcast information, etc. For example, in order to evaluate PSBCH performance, in NR V2X, the payload size of PSBCH may be 56 bits, including a 24-bit CRC (Cyclic Redundancy Check).

[0101] S-PSS, S-SSS and PSBCH may be included in a block format supporting periodic transmission (e.g., SL SS (Synchronization Signal) / PSBCH block, hereinafter referred to as S-SSB (Sidelink-Synchronization Signal Block)). The S-SSB may have the same numerology (i.e., SCS and CP length) as the PSCCH (Physical Sidelink Control Channel) / PSSCH (Physical Sidelink Shared Channel) in the carrier, and the transmission bandwidth may be within a (pre-)configured SL BWP (Sidelink BWP). For example, the bandwidth of the S-SSB may be 11 RBs (Resource Blocks). For example, the PSBCH may span 11 RBs. And, the frequency location of the S-SSB may be (pre-)configured. Therefore, the terminal does not need to perform hypothesis detection in the frequency to discover the S-SSB in the carrier.

[0102] In this specification, PSCCH may be replaced by a control channel, a physical control channel, a sidelink-related control channel, a sidelink-related physical control channel, etc. In this specification, PSSCH may be replaced by a shared channel, a physical shared channel, a sidelink-related shared channel, a sidelink-related physical shared channel, etc.

[0103] FIG. 8 illustrates a procedure for a terminal to perform V2X or SL communication according to a resource allocation mode, according to one embodiment of the present disclosure. The embodiment of FIG. 8 may be combined with various embodiments of the present disclosure.

[0104] Referring to (a) of FIG. 8, in resource allocation mode 1, the base station may schedule SL resources to be used by the terminal for SL transmission. For example, in step S800, the base station may transmit information related to SL resources and / or information related to UL resources to the first terminal. For example, the UL resources may include PUCCH resources and / or PUSCH resources. For example, the UL resources may be resources for reporting SL HARQ feedback to the base station.

[0105] For example, a first terminal may receive information related to a dynamic grant (DG) resource and / or information related to a configured grant (CG) resource from a base station. For example, a CG resource may include a CG type 1 resource or a CG type 2 resource. In this specification, a DG resource may be a resource that a base station configures / allocates to the first terminal via downlink control information (DCI). In this specification, a CG resource may be a (periodic) resource that a base station configures / allocates to the first terminal via DCI and / or an RRC message. For example, in the case of a CG type 1 resource, the base station may transmit an RRC message including information related to the CG resource to the first terminal. For example, in the case of a CG type 2 resource, the base station may transmit an RRC message including information related to the CG resource to the first terminal, and the base station may transmit a DCI related to activation or release of the CG resource to the first terminal.

[0106] In step S810, the first terminal may transmit a PSCCH (e.g., Sidelink Control Information (SCI) or 1st-stage SCI) to the second terminal based on the resource scheduling. In step S820, the first terminal may transmit a PSSCH (e.g., 2nd-stage SCI, MAC PDU, data, etc.) related to the PSCCH to the second terminal. In step S830, the first terminal may receive a PSFCH related to the PSCCH / PSSCH from the second terminal. For example, HARQ feedback information (e.g., NACK information or ACK information) may be received from the second terminal via the PSFCH. In step S840, the first terminal may transmit / report HARQ feedback information to the base station via a PUCCH or a PUSCH. For example, the HARQ feedback information reported to the base station may be information generated by the first terminal based on the HARQ feedback information received from the second terminal. For example, the HARQ feedback information reported to the base station may be information generated by the first terminal based on a rule set in advance. For example, the DCI may be DCI for scheduling SL.

[0107] Referring to (b) of FIG. 8, in resource allocation mode 2, the terminal can determine SL transmission resources within SL resources set by the base station / network or preset SL resources. For example, the set SL resources or preset SL resources may be a resource pool. For example, the terminal can autonomously select or schedule resources for SL transmission. For example, the terminal can perform SL communication by selecting resources by itself within the set resource pool. For example, the terminal can select resources by itself within a selection window by performing sensing and resource (re)selection procedures. For example, the sensing can be performed on a subchannel basis. For example, in step S810, the first terminal that has selected resources by itself within the resource pool transmits PSCCH (e.g., SCI (Sidelink Control Information) or 1) using the resources. st -stage SCI) can be transmitted to the second terminal. In step S820, the first terminal transmits the PSSCH (e.g., 2) related to the PSCCH. nd -stage SCI, MAC PDU, data, etc.) can be transmitted to the second terminal. In step S830, the first terminal can receive a PSFCH related to the PSCCH / PSSCH from the second terminal.

[0108] Below, a terminal procedure for determining a subset of resources to be reported to a higher layer in terminal-to-terminal communication (e.g., sidelink) resource allocation mode 2 is described.

[0109] In resource allocation mode 2, the upper layer may request the terminal to determine a subset of resources from which the upper layer will select resources for terminal-to-terminal physical channel (e.g., PSSCH / PSCCH) transmission. To trigger this procedure, in slot n, the upper layer provides the following parameters for the terminal-to-terminal physical channel (e.g., PSSCH / PSCCH) transmission.

[0110] - Resource pool from which resources will be reported;

[0111] - L1 priority, prio TX ;

[0112] - Remaining PDB (packet delay budget);

[0113] - The number L of subchannels to be used for terminal-to-terminal physical channel (e.g., PSSCH / PSCCH) transmission within a slot. subCH ;

[0114] - Optionally, resource reservation interval P in msec rsvpTX

[0115] - If a higher layer requests a terminal to determine a subset of resources to select for terminal-to-terminal physical channel (e.g., PSSCH / PSCCH) transmission as part of a re-evaluation or pre-emption procedure, the higher layer provides a set of resources (r0, r1, r2, ...) that can be re-evaluated and a set of resources (r'0, r'1, r'2, ...) that can be pre-empted.

[0116] - slot r i '' - It is up to the terminal implementation to determine the subset of resources requested by the upper layer before or after T3. Here, r i'' is the slot with the smallest slot index among (r0, r1, r2, ...) and (r'0, r'1, r'2, ...), and T3 is T SL proc,1 is the same as . Here μ SL is the configuration of the subcarrier spacing (e.g., SCS) of the terminal-to-terminal (e.g., SL) partial bandwidth (e.g., BWP).

[0117] The following upper-level parameters influence this procedure:

[0118] - sl-SelectionWindowList: internal parameter T 2min is given prio TX The value is set to the corresponding value from the upper layer parameter sl-SelectionWindowList.

[0119] - sl-Thres-RSRP-List: This upper layer parameter is used to specify each (p i , p j ) provides an RSRP threshold for the combination, where p i is the priority field value included in the received SCI format 1-A and p j is the transmission priority on the resource selected by the terminal; in this procedure, p j = prio TX am.

[0120] - sl-RS-ForSensing selects whether the terminal uses terminal-to-terminal physical shared channel (e.g., PSSCH)-RSRP or terminal-to-terminal physical control channel (e.g., PSCCH)-RSRP measurements.

[0121] - sl-ResourceReservePeriodList

[0122] - sl-SensingWindow: The internal parameter T0 is defined as the number of slots corresponding to sl-SensingWindow msec.

[0123] - sl-TxPercentageList: given prio TX The internal parameter X for sl-TxPercentageList(prio) is converted from percentage to ratio. TX ) is defined as.

[0124] - sl-PreemptionEnable: If sl-PreemptionEnable is provided and is not equal to 'enabled', the internal parameter prio pre is set by the parameter sl-PreemptionEnable provided by the upper layer.

[0125] If the resource reservation interval is P rsvp_TX When provided, the resource reservation interval is in msec units, or logical slot units P' rsvp_TX is converted to .

[0126] Notation:

[0127] (t' SL 0, t' SL 1, t' SL 2, ...) represents a set of slots belonging to the sidelink resource pool.

[0128] For example, a terminal may select a set of candidate resources (S) based on the procedure described below. A ) can be selected. For example, when resource (re)selection is triggered, the terminal selects a set of candidate resources (S) based on the procedure described below. A ) can be selected. For example, if re-evaluation or pre-emption is triggered, the terminal selects a set of candidate resources (S) based on the procedure described below. A ) can be selected.

[0129] The following procedures may be used:

[0130] 1) Candidate single slot resource R for transmission x,y , j = 0, ..., L subCHWhen slot t'^SL_y has subchannels x+j and L subCH are defined as adjacent subchannels. A terminal is included in the corresponding resource pool within the time interval [n + T1, n + T2]. subCH It may be necessary to assume that all sets of adjacent subchannels correspond to one candidate single-slot resource.

[0131] The choice of T1 can depend on the terminal implementation in the range 0 ≤ T1 ≤ T^SL_proc,1, and T^SL_proc,1 can be predefined.

[0132] If T 2min If this remaining packet delay budget (in slots) is shorter than T2, T 2min ≤ T2≤ may be implemented by the terminal within the range of the remaining packet delay budget (in slots); otherwise, T2 may be set to the remaining packet delay budget (in slots).

[0133] The total number of candidate single slot resources is M total It could be.

[0134] 2) The sensing window can be defined as a slot range of [n - T0, n - T^SL_proc,0], where T0 can be predefined and T^SL_proc,0 can be predefined in units of slots. The terminal may need to monitor slots belonging to the sidelink resource pool within the sensing window excluding the slot in which its own transmission occurs. The terminal may perform the following steps based on the decoded terminal-to-terminal physical control channel (e.g., PSCCH) and the RSRP measured in the corresponding slots.

[0135] 3) Initial parameter Th(p) i , p j ) can be set to the corresponding value of the RSRP threshold indicated in the i-th field of sl-Thres-RSRP-List, where i = p i + (p j - 1) * 8.

[0136] 4) Set S A can be initialized as a set of all candidate single-slot resources.

[0137] 5) The terminal selects all candidate single slot resources R that satisfy the following conditions: x,y Set S A may need to be excluded from.

[0138] - The terminal did not monitor slot t'^SL_m in step 2.

[0139] - For all periodicity values ​​allowed by the upper layer parameter sl-ResourceReservePeriodList, and for a virtual SCI format 1-A received in slot t'^SL_m that indicates all subchannels of the resource pool within this slot with the Resource Reservation Period field set to that periodicity value, condition c of step 6 is satisfied.

[0140] 5a) Set S A The remaining candidate single slot resource R x,y The number of XM total If it is less than the set S A is initialized with all candidate single slot resources of step 4.

[0141] 6) The terminal selects all candidate single slot resources R that satisfy the following conditions: x,y Set S A may need to be excluded from.

[0142] a) The terminal receives SCI format 1-A in slot t'^SL_m, and the resource reservation period field of the received SCI format 1-A and the priority field, if present, are each P rsvp_RX and prio RX Instructs.

[0143] b) RSRP measurements performed on SCI format 1-A for which RSRP measurements were received are Th(prio RX , prio TX ) is higher than.

[0144] c) when (and only when) the Resource Reservation Period field is present in the SCI format received in slot t'^SL_m or in the received SCI format 1-A, slot(s) t'^SL_m+q*P' rsvp_RX The same SCI format that is assumed to be received from R x,y+j*(P'_rsvp_RX) Determine the set of resource blocks and slots that overlap with q=1, 2, ..., Q and j=0, 1, ..., C resel -1. Here, P' rsvp_RX is P rsvp_RX is converted into a unit of logical slot, and P rsvp_RX < T scal and n' - m ≤ P' rsvp_RX When Q is T scal / P rsvp_RX is the up-slot value, and slot n is a set (t'^SL_0, t'^SL_1, ..., t'^SL_T' max -1) if t'SL_n' = n, otherwise, slot t'^SL_n' is in the set (t'^SL_0, t'^SL_1, ..., t'^SL_T' max -1) is the first slot after slot n; otherwise, Q = 1. T scal The selection window size T2 is set to be converted to units of msec.

[0145] 7) Set S A The number of candidate single slot resources remaining in XM total If it is smaller than Th(p i , p j ) is the priority value Th(p i , p j ) is increased by 3 dB, and the procedure continues from step 4.

[0146] The terminal is a set S A can be reported to higher levels.

[0147] If resource r of set (r0, r1, r2, ...) iGo S A If it is not an element of the resource r, the terminal i A reevaluation may need to be reported to higher levels.

[0148] If resource r' of set (r'0, r'1, r'2, ...) i If the terminal satisfies the conditions below, the resource r' i The preemption may need to be reported to higher levels.

[0149] - r' i Go S A is not an element of , and

[0150] - r' i XM is set as the final threshold value after the execution of steps 1) - 7). total Th(prio) which contains all the necessary increments to reach RX , prio TX ), and satisfy the conditions for exclusion in step 6, and

[0151] - Related prio RX satisfies one of the following conditions:

[0152] -- sl-PreemptionEnable is provided and is equivalent to 'enabled' and prio TX > prio RX am.

[0153] -- sl-PreemptionEnable is provided and is not equivalent to 'enabled', prio RX < prio pre and prio TX > prio RX .

[0154] Referring to (a) or (b) of FIG. 8, for example, a first terminal may transmit an SCI to a second terminal on a PSCCH. Or, for example, the first terminal may transmit two consecutive SCIs (e.g., 2-stage SCIs) to the second terminal on the PSCCH and / or the PSSCH. In this case, the second terminal may decode the two consecutive SCIs (e.g., 2-stage SCIs) to receive the PSSCH from the first terminal. In the present specification, an SCI transmitted on a PSCCH is 1 st SCI, 1st SCI, 1 st -stage SCI or 1 st -stage SCI format, and the SCI transmitted on the PSSCH is 2 nd SCI, 2nd SCI, 2 nd -stage SCI or 2 nd -It can be called a stage SCI format.

[0155] Referring to (a) or (b) of FIG. 8, in step S830, the first terminal may receive a PSFCH. For example, the first terminal and the second terminal may determine PSFCH resources, and the second terminal may use the PSFCH resources to transmit HARQ feedback to the first terminal.

[0156] Referring to (a) of FIG. 8, in step S840, the first terminal may transmit SL HARQ feedback to the base station via PUCCH and / or PUSCH.

[0157] FIG. 9 illustrates a transmission spatial filter and a reception spatial filter according to an embodiment of the present disclosure. The embodiment of FIG. 9 can be combined with various embodiments of the present disclosure.

[0158] Referring to FIG. 9, a reception spatial filter (901) used by a receiving terminal for a reception operation and a transmission spatial filter (911) used by a transmitting terminal for a transmission operation are shown.

[0159] For example, a receiving spatial filter can only pass signals with the same beam direction as 903. That is, the receiving terminal can only receive transmissions performed based on a beam having a direction of 903.

[0160] Therefore, transmissions of 906 transmitted based on a beam having a different beam direction from that of 903 may not pass through the reception spatial filter. Signal 904, which is transmitted based on a beam having the same beam direction as that of 903, may pass through the reception spatial filter and be received by the receiving terminal.

[0161] For example, a receiving spatial filter may have a beam size / thickness of 902 and may only pass signals transmitted based on beams within the beam size / thickness. That is, a receiving terminal may only receive transmissions transmitted based on beams having a size / thickness within the beam size / thickness of 902.

[0162] Accordingly, among the signal components transmitted based on a beam having a size / thickness greater than that of 902, transmissions of 905 that contact the reception spatial filter outside the size / thickness of 902 may not pass through the reception spatial filter. Since 904 contacted the reception spatial filter within a range included in the size / thickness of 902, it can pass through the reception spatial filter and be received by the receiving terminal. On the other hand, since 905 contacted the reception spatial filter outside the size / thickness of 902, it cannot pass through the reception spatial filter and be received by the receiving terminal.

[0163] For example, 904 can be received by the receiving terminal because it is in contact with the receiving spatial filter within a range included in the size / thickness of 902 and has the same beam direction (903) as that passed by the receiving spatial filter. Here, for example, if the transmissions of 904 are all components transmitted based on a specific beam (i.e., if all signal components transmitted together with 904 are successfully received by the receiving terminal), the receiving spatial filter may be a spatial filter that covers the transmission spatial filter associated with the specific beam.

[0164] For example, a transmission spatial filter can only pass signals with the same beam direction as 913. That is, when a transmission terminal performs a transmission operation based on the transmission spatial filter, all signal components (914) that pass through the transmission spatial filter and are ultimately transmitted can have the direction of 913.

[0165] Therefore, transmissions of 916 transmitted based on a beam direction different from that of 913 may not pass through the transmission spatial filter. Signal components of 914 having the same beam direction as 913 may pass through the transmission spatial filter and be transmitted to the receiving terminal.

[0166] For example, a transmission spatial filter may have a beam size / thickness of 912 and may only pass signal components included within the beam size / thickness. That is, when a transmission terminal performs a transmission operation based on the transmission spatial filter, only signal components included within the size / thickness of 912 may pass through the transmission spatial filter and be ultimately transmitted.

[0167] Therefore, signal components that are not included in the size / thickness of 912 may not pass through the transmission spatial filter. Since 914 is a signal component included in the size / thickness of 912, it can pass through the transmission spatial filter and be transmitted to the receiving terminal. On the other hand, since 915 is a signal component that is not included in the size / thickness of 912, it cannot pass through the transmission spatial filter and cannot be transmitted to the receiving terminal.

[0168] For example, 914 may be transmitted to the receiving terminal as signal components that are included in the size / thickness of 912 and are identical to the beam direction (913) that the transmission spatial filter passes through. Here, for example, if the transmissions of 914 all pass through the receiving spatial filter that the receiving terminal uses for receiving operation (i.e., if the direction of the signal components of 914 is identical to the beam direction related to the receiving spatial filter and the signal components of 914 are all included in the size / thickness of the receiving spatial filter), the receiving spatial filter may be a spatial filter that covers the transmission spatial filter of 911.

[0169] FIG. 10 illustrates a method for determining whether a receiving spatial filter covers a transmitting spatial filter, according to an embodiment of the present disclosure. The embodiment of FIG. 10 may be combined with various embodiments of the present disclosure.

[0170] Referring to FIG. 10, a reception spatial filter (1001) used by a receiving terminal for a reception operation and a transmission spatial filter (1011) used by a transmitting terminal for a transmission operation are shown.

[0171] For example, the direction of the signal components that the receiving spatial filter passes through may be 1003, and the direction of the signal components that are transmitted through the transmitting spatial filter may be 1013. For example, the receiving beam direction associated with the receiving spatial filter may be 1003, and the transmitting beam direction associated with the transmitting spatial filter may be 1013.

[0172] For example, the size / thickness of the receiving spatial filter may be 1002. That is, the receiving spatial filter passes only signal components included within 1002, and only signal components that pass through the receiving spatial filter can be received by the receiving terminal.

[0173] For example, the size / thickness of the transmission spatial filter may be 1012. That is, the transmission spatial filter passes only signal components included within 1012, and only signal components that pass through the transmission spatial filter can be transmitted to the receiving terminal.

[0174] 1021 and 1022 are cross-sectional views of the size / thickness of the transmission spatial filter or the size / thickness of the reception spatial filter.

[0175] For example, if the above 1021 is the size / thickness of the transmission spatial filter, the above 1022 is the size / thickness of the reception spatial filter, and since the above 1022 is included in the above 1021, the size / thickness of the transmission spatial filter is larger than the size / thickness of the reception spatial filter, so some of the signal components transmitted to the receiving terminal through the transmission spatial filter may not pass through the reception spatial filter. In this case, the reception spatial filter may be a spatial filter that does not cover the transmission spatial filter.

[0176] Conversely, for example, if the 1021 is the size / thickness of the receiving spatial filter, the 1022 is the size / thickness of the transmitting spatial filter, and since the 1022 is included in the 1021, the size / thickness of the transmitting spatial filter is smaller than the size / thickness of the receiving spatial filter, so all signal components transmitted to the receiving terminal through the transmitting spatial filter can pass through the receiving spatial filter. In this case, the receiving spatial filter may be a spatial filter that covers the transmitting spatial filter.

[0177] 1031 represents the receiving beam direction related to 1003, that is, the receiving spatial filter, and 1032 represents the transmitting beam direction related to 1013, that is, the transmitting spatial filter. For example, only when 1031 and 1032 are horizontal as shown in the drawing can all signal components transmitted by the transmitting terminal based on the transmitting spatial filter pass through the receiving spatial filter. Therefore, only when 1031 and 1032 are horizontal can all signal components transmitted to the receiving terminal through the transmitting spatial filter pass through the receiving spatial filter. The receiving spatial filter can be said to be a spatial filter that covers the transmitting spatial filter.

[0178] Meanwhile, in terminal-to-terminal communication (e.g., SL communication), the terminal may perform transmission and / or reception based on multiple panels and / or beam directions, and in this case, a method for managing settings such as information related to the beam or a spatial domain transmission / reception filter (or spatial filter) (hereinafter, beam management method) may need to be defined.

[0179] Hereinafter, in the present disclosure, the transmission beam and / or reception beam may refer to a transmission and / or reception filter in the spatial domain. The proposal of the present disclosure below may be extended to the transmission and / or reception operation of a (pre-configured) terminal-to-terminal communication signal (e.g., SL signal) (e.g., sensing signal, etc.).

[0180] Proposal #01

[0181] According to one embodiment of the present disclosure, when a terminal supports one or more directional reception beams, a reception beam including the directions of the one or more directional reception beams may be defined as a default reception beam. Here, for example, the default reception beam may be applied to a reception resource for which beam pairing-based transmission is not indicated.

[0182] Here, for example, the beam pairing-based transmission may mean transmission performed based on the beams after completing the terminal-to-terminal transmission beam and reception beam pairing process.

[0183] Here, for example, indicating that the beam pairing-based transmission is indicated may mean that a transmission beam and / or a reception beam applied to a transmission resource is indicated.

[0184] Here, for example, the application of the default reception beam may be permitted even in reception resources where the beam pairing-based transmission is indicated. For example, the default reception beam may be applied when the terminal fails to search for the optimal directional reception beam and / or supports a single reception beam.

[0185] In a communication system according to one embodiment of the present disclosure, it is assumed that terminal-to-terminal communication (e.g., SL communication) is performed. Here, terminal-to-terminal communication (e.g., SL communication) may allow a terminal to establish one or more connections (or links), unlike conventional communication (or links) between a base station and a terminal. For example, a terminal may support broadcast transmission and / or groupcast transmission, and may also support one or more links for unicast transmission.

[0186] Here, for example, the default reception operation performed by the terminal in a resource where a specific reception operation is not indicated may be considered. Here, for example, if the terminal supports one or more directional reception beams, the terminal may perform reception operations in two forms in the absence of prior information.

[0187] First, for example, the terminal may change the directional reception beam for each reception resource and attempt reception in multiple directions. Alternatively, for example, the terminal may define a reception beam including the directions of the directional reception beams as a basic reception beam and attempt reception in multiple directions with the basic reception beam for each reception resource.

[0188] Here, since the transmitting terminal cannot know the receiving terminal's reception beam pattern information, it may be desirable for the receiving terminal to support link reception in multiple directions for each reception resource. Therefore, in terminal-to-terminal communication (e.g., SL communication) where connectivity with multiple links is important, it may be desirable to define and operate a basic reception beam that includes the directions of one or more directional beams, even if the terminal supports one or more directional beams.

[0189] FIG. 11 illustrates a basic reception beam that can be used by a receiving terminal according to an embodiment of the present disclosure. The embodiment of FIG. 11 can be combined with various embodiments of the present disclosure.

[0190] Referring to FIG. 11, terminal 1 can monitor a reception resource using the basic reception beam (0). Alternatively, terminal 1 can use directional reception beams (1, 2, 3, and 4) to sweep the available beams in each reception resource and perform monitoring in that reception resource.

[0191] According to one embodiment of the present disclosure, as a modification of the above proposal #01, when a terminal supports one or more directional reception beams, a beam pattern to which the one or more directional reception beams are applied is defined as a basic reception beam pattern, and a method is proposed in which application of the basic reception beam pattern is assumed for reception resources for which beam pairing-based transmission is not indicated.

[0192] Here, for example, the transmitting terminal can perform data scheduling based on the default reception beam pattern assumed by the receiving terminal when transmitting data. For example, the timing of repeated transmission of broadcast data can be determined based on the pattern in which the receiving terminal changes its reception beam.

[0193] The above proposal #01 can be applied in combination with other proposal(s) to the extent that the operation of the disclosure does not conflict.

[0194] Proposal #02

[0195] According to one embodiment of the present disclosure, when a second terminal configures a preferred resource set and / or a non-preferred resource set with resources within a resource selection window based on a channel sensing result within a sensing window, resources received through the remaining receiving beams excluding the basic receiving beam and / or the data receiving beam from the first terminal (within the sensing window) are determined (or processed) as non-monitored resources (or non-monitored slots or non-observed slots), and the non-observed resources and / or resources that can be reserved through the corresponding non-observed resources (and / or resource reservation cycles allowed for the resource pool) can be excluded from the preferred resource set and / or the non-preferred resource set.

[0196] Here, for example, the basic receive beam may mean a receive beam that includes the direction of one or more directional receive beams supported by the terminal and / or a receive beam that covers the data receive beam from the first terminal.

[0197] Here, for example, the preferred resource set and / or the non-preferred resource set may be assistance information for the second terminal to receive data well from the first terminal, and the first terminal may request the second terminal to report the assistance information.

[0198] Here, for example, the first beam covering the second beam may mean that the spatial filter of the first beam includes the spatial filter of the second beam by a certain percentage or more.

[0199] Here, for example, among the resources received through the remaining reception beams excluding the basic reception beam (within the sensing window) and / or the data reception beam from the first terminal, resources determined (or processed) as unobserved resources may be targeted for transmission to a destination other than the second terminal. That is, the resources determined (or processed) as unobserved resources may be used for transmission to a different terminal other than the second terminal.

[0200] In a communication system according to one embodiment of the present disclosure, it is assumed that terminal-to-terminal communication (e.g., SL communication) is performed. Here, in terminal-to-terminal communication (e.g., SL communication), information regarding a preferred resource set and / or a non-preferred resource set from a terminal-to-terminal reception perspective may be transmitted and received for the purpose of resolving the hidden node problem, etc.

[0201] For example, a second terminal (e.g., a receiving terminal) may configure a preferred resource set and / or a non-preferred resource set from the perspective of receiving data from a first terminal (e.g., a transmitting terminal) and report the information to the first terminal. Here, the preferred / non-preferred resource set information may be reported by the second terminal to the first terminal upon request by the first terminal.

[0202] For example, the second terminal may perform channel sensing on resources within a sensing window and, based on the results, configure a preferred resource set and / or a non-preferred resource set based on resources within a resource selection interval.

[0203] For example, the second terminal can predict the reserved resource(s) and the received signal strength (e.g., RSRP) from the reserved resource(s) within the resource selection interval through a channel sensing process within the sensing window, and can include resources whose related received signal strength is lower than a pre-promised and / or set reference value (or threshold value) as resources within the preferred resource set.

[0204] Here, in the next-generation communication system according to the embodiment of the present disclosure, when a terminal performs terminal-to-terminal communication (e.g., SL communication) based on multiple panels and / or beam directions, it may be necessary to consider the reception beam direction when configuring a preferred resource set and / or a non-preferred resource set with resources within a resource selection window based on the channel sensing results within the sensing window.

[0205] For example, assuming that a second terminal performs channel sensing within a sensing window by utilizing a directional receiving beam (hereinafter referred to as a second beam) in a different direction from a receiving beam (hereinafter referred to as a first beam) for receiving data from a first terminal, the second beam may be received in a different direction from the first beam, and the received signal intensities of adjacent signals experienced by the terminal when receiving with the second beam may be significantly different from the received signal intensities of adjacent signals experienced by the terminal when receiving with the first beam.

[0206] For example, when a terminal configures a preferred resource set through a second beam-based channel sensing, when a first beam-based reception operation is performed through resources included in the preferred resource set, the reception strength from the reserved resource(s) may be large, which may be disadvantageous for data reception from the first terminal. Here, when the second terminal configures a preferred resource set and / or a non-preferred resource set with resources within a resource selection window based on the channel sensing result within the sensing window, the judgment of the reception strength may not be accurate for the remaining resources except for at least the resources received through the data reception beam from the first terminal and / or the reception beam covering the corresponding beam direction, and therefore it may be desirable to regard them as non-monitored resources (or non-monitored resources, or non-monitored slots) even if they are actually received resources.

[0207] Accordingly, in the present disclosure, when a second terminal configures a preferred resource set and / or a non-preferred resource set with resources within a resource selection window based on a channel sensing result within a sensing window, a method is proposed in which resources received through receiving beams other than a basic receiving beam and / or a data receiving beam from the first terminal are regarded (or processed) as non-monitored resources (or non-monitored slots or non-observed slots), and the non-observed resources and / or resources that can be reserved through the non-observed resources are excluded from the preferred resource set and / or the non-preferred resource set.

[0208] Here, information about the preferred resource set and / or the non-preferred resource set may be assistance information for the second terminal to receive data well from the first terminal, and the first terminal may request the second terminal to report the assistance information.

[0209] FIG. 12 illustrates a set of (non-)preferred resources configured considering beam directions used within a sensing window, according to an embodiment of the present disclosure. The embodiment of FIG. 12 may be combined with various embodiments of the present disclosure.

[0210] Referring to FIG. 12, a transmitting terminal, terminal 1, and a receiving terminal, terminal 2, are shown. Here, terminal 2 can transmit information about a (non-)preferred resource set in which its sensing results are reflected to terminal 1. For example, terminal 2 can perform sensing for a first resource in a sensing window based on receiving beam #2, wherein, when receiving data from terminal 1, terminal 2 can use receiving beam #1, and wherein, receiving beam #2 can be a beam that does not cover receiving beam #1.

[0211] The terminal 2 may consider the first resource as an unobserved resource, or may exclude potential reserved resource(s) that may be reserved based on the first resource (and the resource reservation cycle allowed for the resource pool, etc.) from the (non-)preferred resource set.

[0212] According to one embodiment of the present disclosure, as a modification of the above proposal #02, when the second terminal configures a preferred resource set and / or a non-preferred resource set with resources within a resource selection window based on a channel sensing result within a sensing window, resources received through receiving beams other than a beam covering a data receiving beam from the first terminal are regarded as (or processed as) non-monitored resources (or, non-monitored slots, or non-monitored resources), and the non-monitored resources and / or resources that can be reserved through them can be excluded from the preferred resource set and / or the non-preferred resource set.

[0213] Here, what is meant by a particular beam covering a data reception beam from a first terminal may mean that the direction covered by the beam includes the direction of the data reception beam.

[0214] Here, when non-monitored resources (or non-monitored slots, or non-monitored resources) and resources reserved through such resources are excluded from the resource selection interval, if the ratio of the remaining resources within the resource selection interval is below a pre-promised and / or set threshold, the excluded resources can be restored.

[0215] Here, for example, when restoring excluded resources, a set of resources that are actually unobserved due to the semi-duplex property, etc. (a first set of unobserved resources) and a set of resources that are considered unobserved due to the beam direction (a second set of unobserved resources) can be distinguished.

[0216] Here, for example, when restoring the excluded resources, resources excluded by the second unobserved resource set may be restored with priority over resources excluded by the first unobserved resource set. This may be because, even if the beam direction used for sensing the resources in the second unobserved resource set is different from the receiving beam, it is expected that there will be more usable information than in the case where the resources are completely unobserved.

[0217] According to another embodiment of the present disclosure, as a variation of the above proposal #02, when configuring a non-preferred resource set, all reception resources received through any reception beam within a sensing window can be utilized. For example, a second terminal can conservatively configure a non-preferred resource set for receiving data from a first terminal, and even if a sensing resource is received through a different reception beam from the data reception beam from the first terminal, if a reception signal of a certain strength or higher is detected, the sensing resource and resources reserved based on the sensing resource within the resource selection period can be included in the non-preferred resource set.

[0218] For example, the above proposal #02 can be applied in combination with other proposal(s) as long as the operation of the disclosure does not conflict.

[0219] Proposal #03

[0220] According to one embodiment of the present disclosure, when a second terminal configures a preferred resource set and / or a non-preferred resource set with resources within a resource selection window based on a channel sensing result within a sensing window, if there is a resource for which transmission based on a specific reception beam is reserved within the resource selection window, and if the reception beam is different from a data reception beam from the first terminal and / or does not cover the data reception beam from the first terminal, the second terminal may include the resource in the non-preferred resource set.

[0221] Here, for example, the preferred resource set and / or the non-preferred resource set may be assistance information for the second terminal to smoothly perform data reception from the first terminal, and the first terminal may request the second terminal to report the assistance information.

[0222] Here, for example, the first beam covering the second beam may mean that the spatial filter of the first beam includes the spatial filter of the second beam by a certain percentage or more.

[0223] Here, for example, a resource that is included in the non-preferred resource set because there is a resource reserved for transmission based on a specific reception beam within the resource selection window and the reception beam is different from the data reception beam from the first terminal and / or does not cover the data reception beam from the first terminal may be a resource for transmission to the second terminal.

[0224] In a communication system according to one embodiment of the present disclosure, when it is assumed that terminal-to-terminal communication (e.g., SL communication) is performed, a method is introduced in which a preferred resource set and / or a non-preferred resource set from the perspective of a receiving terminal is transmitted and received between terminals for the purpose of solving a hidden node problem, etc. in the terminal-to-terminal communication (e.g., SL communication).

[0225] For example, the second terminal may configure a preferred resource set and / or a non-preferred resource set from the perspective of receiving data from the first terminal, and report the information to the first terminal. Here, the preferred / non-preferred resource set information may also be reported by the second terminal to the first terminal upon request by the first terminal.

[0226] For example, the second terminal may perform channel sensing on resources within a sensing window and, based on the results, configure a preferred resource set and / or a non-preferred resource set by including resources within a resource selection interval into a preferred resource set and / or a non-preferred resource set.

[0227] Here, for example, the second terminal may include resource(s) on which it cannot perform a reception operation due to a half duplex characteristic within the resource selection interval in the non-preferred resource set.

[0228] In a next-generation communication system according to an embodiment of the present disclosure, when a terminal performs terminal-to-terminal communication (e.g., SL communication) based on multiple panels and / or beam directions, a method of configuring a non-preferred resource set according to reception beam restrictions may be considered. For example, if a second terminal has a resource reserved for transmission based on a specific reception beam within a resource selection window, and the reception beam is different from a data reception beam from the first terminal and / or does not cover the data reception beam from the first terminal, the second terminal may include the resource in a non-preferred resource set and notify the first terminal of information about the non-preferred resource set.

[0229] FIG. 13 illustrates a set of (non-)preferred resources configured by considering beam directions within a resource selection interval according to an embodiment of the present disclosure. The embodiment of FIG. 13 may be combined with various embodiments of the present disclosure.

[0230] Referring to FIG. 13, a transmitting terminal, terminal 1, another transmitting terminal, terminal 3, and a receiving terminal, terminal 2, are shown. For example, terminal 2 can receive data from terminal 1 based on reception beam #1. For example, terminal 2 can receive data from terminal 3 based on reception beam #2. For example, terminal 2 can include resource(s) reserved to be received based on reception beam #2 in a non-preferred resource set.

[0231] According to one embodiment of the present disclosure, as a modification of the above proposal #03, when the second terminal configures a preferred resource set and / or a non-preferred resource set with resources within a resource selection window based on a channel sensing result within a sensing window, if there is a resource for which transmission based on a specific reception beam within the resource selection window is reserved, and if the reception beam is different from a reception beam corresponding to a transmission beam for transmission of a terminal-to-terminal feedback channel (e.g., PSFCH; physical sidelink feedback channel) to be transmitted to the first terminal and / or does not cover a reception beam corresponding to a transmission beam for transmission of a terminal-to-terminal feedback channel (e.g., PSFCH) to the first terminal, the resource may be included in the non-preferred resource set. For example, the terminal-to-terminal feedback channel (e.g., PSFCH) transmitted by the second terminal to the first terminal may be a terminal-to-terminal feedback channel (e.g., PSFCH) resource that notifies whether there is a collision between resources for the purpose of terminal-to-terminal coordination (e.g., IUC; inter-UE coordination).

[0232] For example, the above proposal #03 can be applied in combination with other proposal(s) as long as the operation of the disclosure does not conflict.

[0233] Proposal #04

[0234] According to one embodiment of the present disclosure, when a terminal configures a candidate transmission resource set with resources within a resource selection window based on a channel sensing result within a sensing window, resources received through receiving beams other than a basic receiving beam (within the sensing window) and / or a receiving beam corresponding to a transmission beam to be transmitted are regarded as (or processed as) non-monitored resources (or, non-monitored slots, or non-monitored resources), and the non-monitored resources and / or resources that can be reserved through the corresponding non-monitored resources can be excluded from the candidate transmission resource set.

[0235] Here, the basic reception beam may mean a reception beam that includes the direction of one or more directional reception beams supported by the terminal and / or a reception beam that covers the data reception beam from the first terminal.

[0236] Here, the first beam covering the second beam may mean that the spatial filter of the first beam includes the spatial filter of the second beam by a certain percentage or more.

[0237] In a communication system according to an embodiment of the present disclosure, it may be assumed that terminal-to-terminal communication (e.g., SL communication) is performed. Here, in the terminal-to-terminal communication (e.g., SL communication), a candidate transmission resource set configuration within a resource selection window based on channel sensing may be supported to mitigate interference. For example, a terminal may, through a channel sensing process within a sensing window, predict reserved resource(s) within the resource selection window and the received signal strength (e.g., RSRP) from the reserved resource(s), and include resources whose related received signal strength is lower than a pre-promised and / or set threshold in the candidate transmission resource set.

[0238] Here, in the next-generation communication system according to the embodiment of the present disclosure, when a terminal performs terminal-to-terminal communication (e.g., SL communication) based on multiple panels and / or beam directions, the direction of the receiving beam within the sensing window may need to be considered.

[0239] For example, a terminal can perform sensing based on a receiving beam that covers a beam direction in which it wants to transmit data. Here, performing channel sensing based on a receiving beam that covers a transmission beam direction by the terminal may mean measuring a channel for the data transmission direction. Therefore, in the present disclosure, when the terminal configures a candidate transmission resource set with resources within a resource selection window based on the channel sensing result within the sensing window, a method is proposed in which resources received through receiving beams other than a basic receiving beam and / or a receiving beam corresponding to a transmission beam to be transmitted are regarded as (or processed as) non-monitored resources (or, non-monitored slots, or non-monitored resources), and the non-monitored resources and / or resources that can be reserved through the non-monitored resources are excluded from the preferred resource set and / or the non-preferred resource set.

[0240] Here, for example, when non-monitored resources (or non-monitored slots or non-monitored resources) and resources reserved through those resources are excluded (from the candidate resource set) within the resource selection interval, if the ratio of remaining resources within the resource selection interval is below a pre-promised and / or set threshold, the terminal can restore the excluded resources (to the candidate resource set).

[0241] Here, for example, when the terminal restores resources excluded from the candidate resource set, a set of resources that are actually unobserved (first unobserved resource set) due to the semi-duplex characteristic, etc., and a set of resources that are considered (or processed) as unobserved due to differences in beam directions (second unobserved resource set) can be distinguished.

[0242] Here, for example, when a terminal restores resources excluded from the candidate resource set, resources excluded by the second unobserved resource set may be restored with priority over resources excluded by the first unobserved resource set. This may be because the second unobserved resource set is expected to have relatively more usable information than a completely unobserved resource set, even if the beam direction is different.

[0243] For example, the above proposal #04 can be applied in combination with other proposal(s) as long as the operation of the disclosure does not conflict.

[0244] Proposal #05

[0245] According to one embodiment of the present disclosure, when a terminal configures a candidate transmission resource set with resources within a resource selection window based on a channel sensing result within a sensing window, the terminal may perform random resource selection within the resource selection interval for full resource transmission and / or insufficient resource transmission when the ratio of resources received by a basic reception beam (within the sensing window) and / or a reception beam corresponding to a transmission beam to be transmitted is less than or equal to A.

[0246] Here, the basic reception beam may mean a reception beam that includes the direction of one or more directional reception beams supported by the terminal and / or a reception beam that covers the data reception beam from the first terminal.

[0247] Here, the first beam covering the second beam may mean that the spatial filter of the first beam includes the spatial filter of the second beam by a certain percentage or more.

[0248] In a communication system according to one embodiment of the present disclosure, when it is assumed that terminal-to-terminal communication (e.g., SL communication) is performed, configuration of a candidate transmission resource set within a resource selection interval based on channel sensing is supported to mitigate interference in the terminal-to-terminal communication (e.g., SL communication).

[0249] For example, the terminal may predict the reserved resource(s) and the received signal strength (e.g., RSRP) from the reserved resource(s) within the resource selection interval through a channel sensing process within the sensing window, and may include resources whose related received signal strength is lower than a pre-promised and / or set threshold as a candidate transmission resource set.

[0250] Here, for example, in a next-generation communication system according to an embodiment of the present disclosure, when a terminal performs terminal-to-terminal communication (e.g., SL communication) based on multiple panels and / or beam directions, it is necessary to consider the direction of the reception beam within the sensing window. For example, the terminal may perform sensing based on a reception beam that covers the beam direction in which it wishes to transmit data.

[0251] Here, for example, if the number of resources received in the direction of the receiving beam covering the data transmission beam within the sensing window is insufficient to meet the required number of resources, additional resources may be provided through a random selection process. For example, the terminal may randomly select all resources required for transmission within the resource selection interval and / or supplement the insufficient resources by randomly selecting them within the resource selection interval.

[0252] For example, the above proposal #05 can be applied in combination with other proposal(s) as long as the operation of the disclosure does not conflict.

[0253] Proposal #06

[0254] According to one embodiment of the present disclosure, a channel sensing method and / or whether channel sensing is performed may be changed depending on the terminal-to-terminal communication (e.g., SL communication) channel congestion.

[0255] Here, for example, the terminal-to-terminal communication (e.g., SL communication) channel congestion may mean the terminal-to-terminal channel congestion ratio (e.g., SL CBR (channel busy ratio)) and / or the terminal-to-terminal channel occupancy ratio (e.g., SL CR (channel occupancy ratio)). Here, the terminal-to-terminal channel congestion ratio (e.g., SL CBR) and / or the terminal-to-terminal channel occupancy ratio (e.g., SL CR) may mean a value measured by a transmitting terminal and / or a value measured by a receiving terminal.

[0256] Here, the channel sensing method and / or the channel congestion threshold for determining whether to perform channel sensing may be agreed upon in advance between terminals and / or may be pre-set and / or may be set based on PC5-RRC.

[0257] Here, channel sensing may mean channel sensing performed by a transmitting terminal and / or channel sensing performed by a receiving terminal.

[0258] For example, in a communication system according to an embodiment of the present disclosure, when it is assumed that terminal-to-terminal communication (e.g., SL communication) is performed, terminal-to-terminal channel congestion ratio (e.g., SL CBR) and / or terminal-to-terminal channel occupancy rate (e.g., SL CR) are defined for the purpose of congestion control in the terminal-to-terminal communication (e.g., SL communication).

[0259] Here, for example, the terminal-to-terminal channel congestion ratio (e.g., SL CBR) may mean the ratio of subchannel(s) among the subchannel(s) measured within a specific time interval (e.g., 100 slots) of which the received signal strength indicator (e.g., RSSI) is greater than a preset value.

[0260] Here, for example, the terminal-to-terminal channel occupancy (e.g., SL CR) may mean the ratio of sub-channel(s) utilized or selected for data transmission among the measured sub-channel(s) within a specific time interval (e.g., 1 second).

[0261] In a next-generation communication system according to an embodiment of the present disclosure, for example, when terminals perform terminal-to-terminal communication (e.g., SL communication) based on multiple panels and / or beam directions, the interference environment can vary significantly depending on the terminal density by utilizing directional transmission / reception beams.

[0262] For example, when the terminal density is low, the probability of existence of terminal-to-terminal communication (e.g., SL communication) in which the reception beam directions are aligned is low, and the interference impact between terminal-to-terminal communication (e.g., SL communication) may be relatively low. For example, when the terminal density is high, the probability of existence of terminal-to-terminal communication (e.g., SL communication) in which the reception beam directions are aligned is high, and the interference impact between terminal-to-terminal communication (e.g., SL communication) may be relatively large. Therefore, in the present disclosure, a method of changing a channel sensing method and / or whether to perform channel sensing depending on channel congestion is proposed.

[0263] For example, the terminal may not perform Mode 2 channel sensing if the terminal-to-terminal channel congestion ratio (e.g., SL CBR) and / or the terminal-to-terminal channel occupancy ratio (e.g., SL CR) for the channel is below a pre-agreed and / or preset threshold, and may perform Mode 2 channel sensing if it exceeds the threshold. Alternatively, for example, the terminal may perform first beam type-based channel sensing if the terminal-to-terminal channel congestion ratio (e.g., SL CBR) and / or the terminal-to-terminal channel occupancy ratio (e.g., SL CR) for the channel is below a pre-agreed and / or preset threshold, and may perform second beam type-based channel sensing if it exceeds the threshold.

[0264] Here, the first beam type may mean a directional beam, and the second beam type may mean an omni-directional (e.g., omni) beam.

[0265] Here, for example, if the terminal does not perform channel sensing and operates in mode 2, the terminal can perform random selection within the resource selection interval.

[0266] Alternatively, for example, the first beam type and the second beam type may assume different beam widths. For example, the terminal may determine its receive beam direction and / or receive beam width based on channel congestion, such as a measured channel congestion ratio (e.g., CBR).

[0267] Here, for example, the terminal-to-terminal channel congestion ratio (e.g., SL CBR) and / or the terminal-to-terminal channel occupancy ratio (e.g., SL CR), which are measurement indices indicating terminal-to-terminal communication (e.g., SL communication) channel congestion, may be measured based on the basic receiving beam and / or measured and managed for each receiving beam. For example, when terminal-to-terminal channel congestion ratio (e.g., SL CBR) and / or channel occupancy ratio (e.g., CR) information is shared between a transmitting terminal and a receiving terminal, beam width information for measuring the terminal-to-terminal channel congestion ratio (e.g., SL CBR) and / or channel occupancy ratio (e.g., CR) may be mutually exchanged.

[0268] For example, a transmitting terminal may receive information such as a beam width from a receiving terminal and measure a channel congestion ratio (e.g., CBR) based on the same beam width, and / or a receiving terminal may receive information such as a beam width used by a transmitting terminal and perform a reception operation based on the same beam width.

[0269] For example, the above proposal #06 can be applied in combination with other proposal(s) as long as the operation of the disclosure does not conflict.

[0270] The various methods proposed above can be applied to the devices described below. First, the processor (202) of the receiving terminal can set at least one partial bandwidth (e.g., BWP). And, the processor (202) of the receiving terminal can control the transceiver (206) of the receiving terminal to receive a physical channel related to terminal-to-terminal communication (e.g., SL communication) and / or a reference signal related to terminal-to-terminal communication (e.g., SL communication) from the transmitting terminal on at least one bandwidth (e.g., BWP).

[0271] In FR2, during terminal-to-terminal communication (e.g., SL communication), the terminal can perform transmission and / or reception operations based on multiple panels and / or beam directions. Here, a spatial setting including the beam-related information or a spatial domain transmission / reception filter needs to be defined. For example, even in FR2, a transmitting terminal can select a transmission resource based on sensing (mode 2 resource selection), and at this time, resources sensed based on a default reception beam and / or a beam not covered by a reception beam corresponding to a transmission beam to be used for transmission can be determined as unobserved resources in the resource selection procedure.

[0272] According to various embodiments of the present disclosure, a transmitting terminal may determine a resource on which sensing is performed based on a receiving beam that is not covered by a default receiving beam and / or a receiving beam corresponding to a transmitting beam to be used for transmission, as an unobserved resource in a resource selection procedure, and may exclude the unobserved resource and resources that can be reserved through control information on the unobserved resource from a candidate resource set.

[0273] According to various embodiments of the present disclosure, a sensing result performed based on a beam not covered by a basic receiving beam or a receiving beam corresponding to a transmission beam does not include a result significantly related to the transmission beam or the basic receiving operation, and does not include a result for signals that may affect the transmission beam or the basic receiving operation, so that an effect of reducing uncertainty in which a congested resource may be selected can be achieved through embodiments of the present disclosure.

[0274] FIG. 14 illustrates a procedure for a first device to perform wireless communication according to an embodiment of the present disclosure. The embodiment of FIG. 14 may be combined with various embodiments of the present disclosure.

[0275] Referring to FIG. 14, in step S1410, the first device may receive at least one control channel transmission based on a second beam different from the first beam in at least one first resource within a sensing window for resource selection. For example, the first beam may be a first reception beam or a default reception beam corresponding to a transmission beam to be used for inter-device transmission. In step S1420, the first device may exclude at least one second resource associated with the at least one first resource from a resource set for determining a transmission resource to be used for the inter-device transmission, based on the at least one control channel transmission being received based on the second beam.

[0276] For example, additionally, the first device may select the transmission resource from the resource set, excluding the at least one second resource; and perform the device-to-device transmission to the second device based on the transmission resource. For example, the resource set may be a candidate resource set for resource selection.

[0277] For example, the set of resources may be a preferred set of resources for device-to-device coordination.

[0278] For example, the set of resources may be a non-preferred set of resources for device-to-device coordination.

[0279] For example, the at least one second resource may be at least one resource that can be reserved through the at least one first resource.

[0280] For example, the at least one second resource may be at least one resource that can be reserved based on a resource reservation period allowed for the resource pool and the at least one first resource.

[0281] For example, at least one of the first resources may be considered as at least one non-monitored slot.

[0282] For example, based on a ratio of the overlapping portion between the first spatial filter associated with the first beam and the second spatial filter associated with the second beam being less than a threshold value, the second beam may not be covered by the first beam.

[0283] For example, additionally, the first device may perform sensing based on the first beam for the sensing window. For example, based on the sensing result, a ratio of resources in which reception based on the first beam is detected relative to the sensing window is below a threshold ratio, the transmission resource may be randomly selected within a selection window for resource selection.

[0284] For example, additionally, the first device may receive information from the second device regarding a non-preferred resource set including at least one third resource; and may exclude the at least one third resource from the resource set.

[0285] For example, additionally, the first device may include the at least one second resource in the non-preferred resource set based on the at least one control channel transmission being received based on the second beam.

[0286] For example, additionally, the first device may receive a request for the non-preferred resource set from the second device; and based on the request, transmit information related to the non-preferred resource set to the second device.

[0287] For example, the primary receive beam may be a receive beam that includes directions of at least one directional receive beam acceptable to the first device.

[0288] The above-described embodiment can be applied to various devices described below. First, the processor (102) of the first device (100) can receive at least one control channel transmission based on a second beam different from the first beam in at least one first resource within a sensing window for resource selection. For example, the first beam can be a first reception beam or a default reception beam corresponding to a transmission beam to be used for inter-device transmission. Then, the processor (102) of the first device (100) can exclude at least one second resource related to the at least one first resource from a resource set for determining a transmission resource to be used for the inter-device transmission, based on the at least one control channel transmission being received based on the second beam.

[0289] According to one embodiment of the present disclosure, a first device for performing wireless communication may be provided. For example, the first device may include: at least one transceiver; at least one processor; and at least one memory executably connected to the at least one processor and storing instructions that cause the first device to perform operations based on being executed by the at least one processor. For example, the operations may include: receiving, in at least one first resource within a sensing window for resource selection, at least one control channel transmission based on a second beam different from a first beam, wherein the first beam is a first receive beam or a default receive beam corresponding to a transmit beam to be used for inter-device transmission; and excluding, based on the at least one control channel transmission being received based on the second beam, at least one second resource associated with the at least one first resource from a resource set for determining a transmission resource to be used for the inter-device transmission.

[0290] For example, additionally, the operations may further include: selecting the transmission resource from the resource set, from which at least one second resource is excluded; and performing the device-to-device transmission to the second device based on the transmission resource. For example, the resource set may be a candidate resource set for resource selection.

[0291] For example, the set of resources may be a preferred set of resources for device-to-device coordination.

[0292] For example, the set of resources may be a non-preferred set of resources for device-to-device coordination.

[0293] For example, the at least one second resource may be at least one resource that can be reserved through the at least one first resource.

[0294] For example, the at least one second resource may be at least one resource that can be reserved based on a resource reservation period allowed for the resource pool and the at least one first resource.

[0295] For example, at least one of the first resources may be considered as at least one non-monitored slot.

[0296] For example, based on a ratio of the overlapping portion between the first spatial filter associated with the first beam and the second spatial filter associated with the second beam being less than a threshold value, the second beam may not be covered by the first beam.

[0297] For example, additionally, the above operations may further include: performing sensing based on the first beam for the sensing window. For example, based on the sensing result, a ratio of resources in which reception based on the first beam is detected relative to the sensing window is below a threshold ratio, the transmission resource may be randomly selected within the selection window for resource selection.

[0298] For example, additionally, the operations may further include: receiving information related to a non-preferred resource set including at least one third resource from the second device; and excluding the at least one third resource from the resource set.

[0299] For example, additionally, the operations may further include: including the at least one second resource in a non-preferred resource set based on the at least one control channel transmission being received based on the second beam.

[0300] For example, additionally, the operations may further include: receiving a request for the non-preferred resource set from the second device; and transmitting information related to the non-preferred resource set to the second device based on the request.

[0301] For example, the primary receive beam may be a receive beam that includes directions of at least one directional receive beam acceptable to the first device.

[0302] According to one embodiment of the present disclosure, a device configured to control a first terminal may be provided. For example, the device may include: at least one processor; and at least one memory executable to the at least one processor, and having instructions recorded thereon that cause the first terminal to perform operations based on being executed by the at least one processor. For example, the operations may include: receiving, in at least one first resource within a sensing window for resource selection, at least one control channel transmission based on a second beam different from a first beam, wherein the first beam is a first receive beam or a default receive beam corresponding to a transmit beam to be used for inter-UE transmission; and excluding, based on the at least one control channel transmission being received based on the second beam, at least one second resource associated with the at least one first resource from a resource set for determining a transmission resource to be used for the inter-UE transmission.

[0303] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, may cause a first device to: receive at least one control channel transmission based on a second beam different from a first beam in at least one first resource within a sensing window for resource selection, wherein the first beam is a first receive beam or a default receive beam corresponding to a transmit beam to be used for inter-device transmission; and exclude at least one second resource associated with the at least one first resource from a resource set for determining a transmission resource to be used for the inter-device transmission, based on the at least one control channel transmission being received based on the second beam.

[0304] FIG. 15 illustrates a procedure for a second device to perform wireless communication according to an embodiment of the present disclosure. The embodiment of FIG. 15 may be combined with various embodiments of the present disclosure.

[0305] Referring to FIG. 15, in step S1510, the second device can receive inter-device transmission from the first device based on a transmission resource. For example, the transmission resource is selected from a candidate resource set from which at least one second resource is excluded, the at least one second resource is at least one resource associated with at least one first resource on which first sensing is performed based on a second beam that is not covered by the first beam, and the first beam can be a first reception beam or a default reception beam of the first device corresponding to a transmission beam to be used for the inter-device transmission.

[0306] For example, additionally, the second device may perform a second sensing, wherein at least one third resource associated with a third beam is sensed as a result of the second sensing; and based on the third beam being different from a second receive beam corresponding to the transmit beam, the second device may transmit information related to a non-preferred resource set including the at least one third resource to the first device.

[0307] The above-described embodiment can be applied to various devices described below. First, the processor (202) of the second device (200) can control the transceiver (206) to receive inter-device transmission from the first device (100) based on a transmission resource. For example, the transmission resource is selected from a candidate resource set from which at least one second resource is excluded, the at least one second resource is at least one resource associated with at least one first resource on which first sensing is performed based on a second beam that is not covered by the first beam, and the first beam can be a first reception beam or a default reception beam of the first device corresponding to a transmission beam to be used for the inter-device transmission.

[0308] According to one embodiment of the present disclosure, a second device performing wireless communication may be provided. For example, the second device may include: at least one transceiver; at least one processor; and at least one memory executably connected to the at least one processor and having instructions recorded thereon that cause the second device to perform operations based on being executed by the at least one processor. For example, the operations may include: receiving an inter-device transmission from a first device based on a transmission resource, wherein the transmission resource is selected from a set of candidate resources excluding at least one second resource, wherein the at least one second resource is at least one resource associated with at least one first resource on which a first sensing is performed based on a second beam that is not covered by a first beam, and wherein the first beam may be a first receive beam or a default receive beam of the first device corresponding to a transmit beam to be used for the inter-device transmission.

[0309] For example, the above operations may further include: performing a second sensing, wherein at least one third resource associated with a third beam is sensed as a result of the second sensing; and transmitting, to the first device, information related to a non-preferred resource set including the at least one third resource based on the third beam being different from a second receive beam corresponding to the transmit beam.

[0310] The various embodiments of the present disclosure may be combined with each other.

[0311] Below, a description is given of devices to which various embodiments of the present disclosure can be applied.

[0312] Although not limited thereto, the various descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in this document may be applied to various fields requiring wireless communication / connectivity (e.g., 5G) between devices.

[0313] Hereinafter, more specific examples will be provided with reference to the drawings. In the drawings / descriptions below, the same drawing reference numerals may represent identical or corresponding hardware blocks, software blocks, or functional blocks, unless otherwise described.

[0314] Fig. 16 illustrates a communication system (1) according to one embodiment of the present disclosure. The embodiment of Fig. 16 can be combined with various embodiments of the present disclosure.

[0315] Referring to FIG. 16, a communication system (1) to which various embodiments of the present disclosure are applied includes a wireless device, a base station, and a network. Here, the wireless device refers to a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Things) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone) and / or an Aerial Vehicle (AV) (e.g., an Advanced Air Mobility (AAM)). The XR device may include an Augmented Reality (AR) / Virtual Reality (VR) / Mixed Reality (MR) device, and may be implemented in the form of a Head-Mounted Device (HMD), a Head-Up Display (HUD) equipped in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, etc. The portable device may include a smartphone, a smart pad, a wearable device (e.g., a smart watch, smart glasses), a computer (e.g., a laptop, etc.), etc. The home appliance may include a TV, a refrigerator, a washing machine, etc. The IoT device may include a sensor, a smart meter, etc. For example, a base station and a network may also be implemented as a wireless device, and a specific wireless device (200a) may operate as a base station / network node to other wireless devices.

[0316] Here, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. At this time, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology, and may be implemented with standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification may perform communication based on LTE-M technology. At this time, for example, LTE-M technology may be an example of LPWAN technology, and may be called by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology can be implemented by at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication, and is not limited to the above-described names. For example, ZigBee technology can create personal area networks (PAN) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.

[0317] Wireless devices (100a to 100f) can be connected to a network (300) via a base station (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, etc. The wireless devices (100a to 100f) can communicate with each other via the base station (200) / network (300), but can also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to Everything) communication). In addition, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0318] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base stations (200), and base stations (200) / base stations (200). Here, wireless communication / connection can be achieved through various wireless access technologies (e.g., 5G NR) such as uplink / downlink communication (150a), sidelink communication (150b) (or, D2D communication), and communication between base stations (150c) (e.g., relay, IAB (Integrated Access Backhaul). Through wireless communication / connection (150a, 150b, 150c), wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals to each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, at least some of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and resource allocation processes can be performed based on various proposals of the present disclosure.

[0319] FIG. 17 illustrates a wireless device according to an embodiment of the present disclosure. The embodiment of FIG. 17 may be combined with various embodiments of the present disclosure.

[0320] Referring to FIG. 17, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals via various wireless access technologies (e.g., LTE, NR). Here, {the first wireless device (100), the second wireless device (200)} can correspond to {the wireless device (100x), the base station (200)} and / or {the wireless device (100x), the wireless device (100x)} of FIG. 16.

[0321] A first wireless device (100) includes one or more processors (102) and one or more memories (104), and may further include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memories (104) and / or the transceivers (106), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (102) may process information in the memory (104) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (106). Furthermore, the processor (102) may receive a wireless signal including second information / signal via the transceiver (106), and then store information obtained from signal processing of the second information / signal in the memory (104). The memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals via one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit. In the present disclosure, a wireless device may also mean a communication modem / circuit / chip.

[0322] A second wireless device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memories (204) and / or the transceivers (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). In addition, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of the fourth information / signals in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In the present disclosure, a wireless device may also mean a communication modem / circuit / chip.

[0323] Hereinafter, the hardware elements of the wireless device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed herein, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed herein.

[0324] One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. One or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in one or more processors (102, 202). The descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software configured to perform one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202). The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0325] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0326] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of this document, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of this document, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed herein, via one or more antennas (108, 208). In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0327] FIG. 18 illustrates a signal processing circuit for a transmission signal according to an embodiment of the present disclosure. The embodiment of FIG. 18 can be combined with various embodiments of the present disclosure.

[0328] Referring to FIG. 18, the signal processing circuit (1000) may include a scrambler (1010), a modulator (1020), a layer mapper (1030), a precoder (1040), a resource mapper (1050), and a signal generator (1060). Although not limited thereto, the operations / functions of FIG. 18 may be performed in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 17. The hardware elements of FIG. 18 may be implemented in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 17. For example, blocks 1010 to 1060 may be implemented in the processor (102, 202) of FIG. 17. Additionally, blocks 1010 to 1050 may be implemented in the processor (102, 202) of FIG. 17, and block 1060 may be implemented in the transceiver (106, 206) of FIG. 17.

[0329] The codeword can be converted into a wireless signal through the signal processing circuit (1000) of FIG. 18. Here, the codeword is an encoded bit sequence of an information block. The information block may include a transport block (e.g., an UL-SCH transport block, a DL-SCH transport block). The wireless signal may be transmitted through various physical channels (e.g., a PUSCH or a PDSCH).

[0330] Specifically, the codeword can be converted into a bit sequence scrambled by a scrambler (1010). The scramble sequence used for scrambling is generated based on an initialization value, and the initialization value may include ID information of the wireless device, etc. The scrambled bit sequence can be modulated into a modulation symbol sequence by a modulator (1020). The modulation method may include pi / 2-BPSK (pi / 2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), m-QAM (m-Quadrature Amplitude Modulation), etc. The complex modulation symbol sequence can be mapped to one or more transmission layers by a layer mapper (1030). The modulation symbols of each transmission layer can be mapped to the corresponding antenna port(s) by a precoder (1040) (precoding). The output z of the precoder (1040) can be obtained by multiplying the output y of the layer mapper (1030) by a precoding matrix W of N*M. Here, N is the number of antenna ports, and M is the number of transmission layers. Here, the precoder (1040) can perform precoding after performing transform precoding (e.g., DFT transform) on complex modulation symbols. In addition, the precoder (1040) can perform precoding without performing transform precoding.

[0331] The resource mapper (1050) can map modulation symbols of each antenna port to time-frequency resources. The time-frequency resources can include multiple symbols (e.g., CP-OFDMA symbols, DFT-s-OFDMA symbols) in the time domain and multiple subcarriers in the frequency domain. The signal generator (1060) generates a wireless signal from the mapped modulation symbols, and the generated wireless signal can be transmitted to another device through each antenna. To this end, the signal generator (1060) can include an Inverse Fast Fourier Transform (IFFT) module, a Cyclic Prefix (CP) inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0332] The signal processing process for receiving signals in a wireless device can be configured in reverse order of the signal processing process (1010 to 1060) of FIG. 18. For example, a wireless device (e.g., 100, 200 of FIG. 17) can receive wireless signals from the outside through an antenna port / transceiver. The received wireless signals can be converted into baseband signals through a signal restorer. For this purpose, the signal restorer can include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module. Thereafter, the baseband signal can be restored to a codeword through a resource demapper process, a postcoding process, a demodulation process, and a descrambling process. The codewords can be restored to the original information blocks through decoding. Accordingly, a signal processing circuit (not shown) for a received signal may include a signal restorer, a resource de-mapper, a postcoder, a demodulator, a de-scrambler, and a decoder.

[0333] FIG. 19 illustrates a wireless device according to an embodiment of the present disclosure. The wireless device may be implemented in various forms depending on the use case / service (see FIG. 16). The embodiment of FIG. 19 may be combined with various embodiments of the present disclosure.

[0334] Referring to FIG. 19, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 17 and may be composed of various elements, components, units / units, and / or modules. For example, the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and an additional element (140). The communication unit may include a communication circuit (112) and a transceiver(s) (114). For example, the communication circuit (112) may include one or more processors (102, 202) and / or one or more memories (104, 204) of FIG. 17. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 17. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (140) and controls the overall operation of the wireless device. For example, the control unit (120) may control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit (130). In addition, the control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless / wired interface in the memory unit (130).

[0335] The additional element (140) may be configured in various ways depending on the type of the wireless device. For example, the additional element (140) may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit. Although not limited thereto, the wireless device may be implemented in the form of a robot (Fig. 16, 100a), a vehicle (Fig. 16, 100b-1, 100b-2), an XR device (Fig. 16, 100c), a portable device (Fig. 16, 100d), a home appliance (Fig. 16, 100e), an IoT device (Fig. 16, 100f), a digital broadcasting terminal, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or a financial device), a security device, a climate / environmental device, an AI server / device (Fig. 16, 400), a base station (Fig. 16, 200), a network node, etc. Wireless devices may be mobile or stationary depending on the use / service.

[0336] In FIG. 19, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be interconnected entirely via a wired interface, or at least some may be wirelessly connected via a communication unit (110). For example, within the wireless device (100, 200), the control unit (120) and the communication unit (110) may be wired, and the control unit (120) and the first unit (e.g., 130, 140) may be wirelessly connected via the communication unit (110). In addition, each element, component, unit / part, and / or module within the wireless device (100, 200) may further include one or more elements. For example, the control unit (120) may be composed of one or more processor sets. For example, the control unit (120) may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing processor, a memory control processor, etc. As another example, the memory unit (130) may be composed of a random access memory (RAM), a dynamic RAM (DRAM), a read only memory (ROM), a flash memory, a volatile memory, a non-volatile memory, and / or a combination thereof.

[0337] Below, the implementation example of Fig. 19 is described in more detail with reference to the drawings.

[0338] FIG. 20 illustrates a mobile device according to an embodiment of the present disclosure. The mobile device may include a smartphone, a smart pad, a wearable device (e.g., a smartwatch, smartglasses), or a portable computer (e.g., a laptop, etc.). The mobile device may be referred to as a Mobile Station (MS), a User Terminal (UT), a Mobile Subscriber Station (MSS), a Subscriber Station (SS), an Advanced Mobile Station (AMS), or a Wireless Terminal (WT). The embodiment of FIG. 20 may be combined with various embodiments of the present disclosure.

[0339] Referring to FIG. 20, the portable device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a memory unit (130), a power supply unit (140a), an interface unit (140b), and an input / output unit (140c). The antenna unit (108) may be configured as a part of the communication unit (110). Blocks 110 to 130 / 140a to 140c correspond to blocks 110 to 130 / 140 of FIG. 19, respectively.

[0340] The communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with other wireless devices and base stations. The control unit (120) can control components of the mobile device (100) to perform various operations. The control unit (120) can include an AP (Application Processor). The memory unit (130) can store data / parameters / programs / codes / commands required for operating the mobile device (100). In addition, the memory unit (130) can store input / output data / information, etc. The power supply unit (140a) supplies power to the mobile device (100) and can include a wired / wireless charging circuit, a battery, etc. The interface unit (140b) can support connection between the mobile device (100) and other external devices. The interface unit (140b) can include various ports (e.g., audio input / output ports, video input / output ports) for connection with external devices. The input / output unit (140c) can input or output video information / signals, audio information / signals, data, and / or information input from a user. The input / output unit (140c) may include a camera, a microphone, a user input unit, a display unit (140d), a speaker, and / or a haptic module.

[0341] For example, in the case of data communication, the input / output unit (140c) obtains information / signals (e.g., touch, text, voice, image, video) input by the user, and the obtained information / signals can be stored in the memory unit (130). The communication unit (110) converts the information / signals stored in the memory into wireless signals, and can directly transmit the converted wireless signals to other wireless devices or to a base station. In addition, the communication unit (110) can receive wireless signals from other wireless devices or base stations, and then restore the received wireless signals to the original information / signals. The restored information / signals can be stored in the memory unit (130) and then output in various forms (e.g., text, voice, image, video, haptic) through the input / output unit (140c).

[0342] FIG. 21 illustrates a vehicle or autonomous vehicle according to one embodiment of the present disclosure. The vehicle or autonomous vehicle may be implemented as a mobile robot, a car, a train, a manned or unmanned aerial vehicle (AV), a ship, or the like. The embodiment of FIG. 21 may be combined with various embodiments of the present disclosure.

[0343] Referring to FIG. 21, a vehicle or autonomous vehicle (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a driving unit (140a), a power supply unit (140b), a sensor unit (140c), and an autonomous driving unit (140d). The antenna unit (108) may be configured as a part of the communication unit (110). Blocks 110 / 130 / 140a to 140d correspond to blocks 110 / 130 / 140 of FIG. 19, respectively.

[0344] The communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with external devices such as other vehicles, base stations (e.g., base stations, road side units, etc.), and servers. The control unit (120) can control elements of the vehicle or autonomous vehicle (100) to perform various operations. The control unit (120) can include an ECU (Electronic Control Unit). The drive unit (140a) can drive the vehicle or autonomous vehicle (100) on the ground. The drive unit (140a) can include an engine, a motor, a power train, wheels, brakes, a steering device, etc. The power supply unit (140b) supplies power to the vehicle or autonomous vehicle (100) and can include a wired / wireless charging circuit, a battery, etc. The sensor unit (140c) can obtain vehicle status, surrounding environment information, user information, etc. The sensor unit (140c) may include an IMU (inertial measurement unit) sensor, a collision sensor, a wheel sensor, a speed sensor, an incline sensor, a weight detection sensor, a heading sensor, a position module, a vehicle forward / backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, an illuminance sensor, a pedal position sensor, etc. The autonomous driving unit (140d) may implement a technology for maintaining a driving lane, a technology for automatically controlling speed such as adaptive cruise control, a technology for automatically driving along a set path, a technology for automatically setting a path and driving when a destination is set, etc.

[0345] For example, the communication unit (110) can receive map data, traffic information data, etc. from an external server. The autonomous driving unit (140d) can generate an autonomous driving route and driving plan based on the acquired data. The control unit (120) can control the drive unit (140a) so that the vehicle or autonomous vehicle (100) moves along the autonomous driving route according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit (110) can irregularly / periodically acquire the latest traffic information data from an external server and can acquire surrounding traffic information data from surrounding vehicles. In addition, during autonomous driving, the sensor unit (140c) can acquire vehicle status and surrounding environment information. The autonomous driving unit (140d) can update the autonomous driving route and driving plan based on newly acquired data / information. The communication unit (110) can transmit information regarding the vehicle location, autonomous driving route, driving plan, etc. to the external server. External servers can predict traffic information data in advance using AI technology or other technologies based on information collected from vehicles or autonomous vehicles, and provide the predicted traffic information data to the vehicles or autonomous vehicles.

[0346] The claims set forth in this specification may be combined in various ways. For example, the technical features of the method claims of this specification may be combined and implemented as a device, and the technical features of the device claims of this specification may be combined and implemented as a method. Furthermore, the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a device, and the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a method.

Claims

1. In a method for performing wireless communication by a first device, Receive at least one control channel transmission based on a second beam different from the first beam, in at least one first resource within a sensing window for resource selection; The step wherein the first beam is a first receiving beam or a default receiving beam corresponding to a transmission beam to be used for inter-device transmission; and A method comprising the step of excluding at least one second resource associated with the at least one first resource from a resource set for determining transmission resources to be used for the device-to-device transmission, based on the at least one control channel transmission being received based on the second beam.

2. In paragraph 1, selecting the transmission resource from the set of resources from which at least one second resource is excluded; and Further comprising a step of performing the device-to-device transmission to the second device based on the above transmission resource, A method wherein the above resource set is a candidate resource set for resource selection.

3. In paragraph 1, A method wherein the above resource set is a preferred resource set for device-to-device coordination.

4. In paragraph 1, A method wherein the above resource set is a non-preferred resource set for device-to-device coordination.

5. In paragraph 1, A method wherein said at least one second resource is at least one resource that can be reserved through said at least one first resource.

6. In paragraph 5, A method wherein the at least one second resource is at least one resource that can be reserved based on a resource reservation period allowed for the resource pool and the at least one first resource.

7. In paragraph 1, A method wherein at least one of the first resources is considered as at least one non-monitored slot.

8. In paragraph 1, A method in which the second beam is not covered by the first beam, based on a ratio of the overlapping portion between the first spatial filter associated with the first beam and the second spatial filter associated with the second beam being less than a threshold value.

9. In paragraph 1, For the above sensing window, further comprising a step of performing sensing based on the first beam, A method in which, based on the sensing result, the ratio of resources in which reception based on the first beam is detected compared to the sensing window is less than or equal to a threshold ratio, the transmission resource is randomly selected within a selection window for resource selection.

10. In paragraph 1, receiving information related to a set of non-preferred resources including at least one third resource from a second device; and A method further comprising the step of excluding at least one third resource from the set of resources.

11. In paragraph 1, A method further comprising the step of including said at least one second resource in a non-preferred resource set based on said at least one control channel transmission being received based on said second beam.

12. In paragraph 11, receiving a request for the non-preferred resource set from the second device; and A method further comprising the step of transmitting information related to the non-preferred resource set to the second device based on the request.

13. In paragraph 1, A method wherein the basic receive beam is a receive beam including directions of at least one directional receive beam acceptable to the first device.

14. In a first device performing wireless communication, At least one transmitter / receiver; at least one processor; and At least one memory executable connected to said at least one processor and having instructions recorded thereon that cause said first device to perform operations based on being executed by said at least one processor, said operations comprising: Receive at least one control channel transmission based on a second beam different from the first beam, in at least one first resource within a sensing window for resource selection; The step wherein the first beam is a first receiving beam or a default receiving beam corresponding to a transmission beam to be used for inter-device transmission; and A first device comprising a step of excluding at least one second resource associated with the at least one first resource from a resource set for determining transmission resources to be used for the device-to-device transmission, based on the at least one control channel transmission being received based on the second beam.

15. In a device set to control the first terminal, at least one processor; and At least one memory executable and connected to at least one processor, and having instructions recorded thereon that cause the first terminal to perform operations based on being executed by the at least one processor, wherein the operations are: Receive at least one control channel transmission based on a second beam different from the first beam, in at least one first resource within a sensing window for resource selection; The step wherein the first beam is a first reception beam or a default reception beam corresponding to a transmission beam to be used for inter-UE transmission; and A device comprising a step of excluding at least one second resource associated with the at least one first resource from a resource set for determining transmission resources to be used for the terminal-to-terminal transmission, based on the at least one control channel transmission being received based on the second beam.

16. A non-transitory computer-readable storage medium that records commands, The above commands, when executed, cause the first device to: Receiving at least one control channel transmission based on a second beam different from the first beam, in at least one first resource within a sensing window for resource selection; The step wherein the first beam is a first receiving beam or a default receiving beam corresponding to a transmission beam to be used for inter-device transmission; and A non-transitory computer-readable storage medium for excluding at least one second resource associated with at least one first resource from a resource set for determining transmission resources to be used for the device-to-device transmission, based on the at least one control channel transmission being received based on the second beam.

17. In a method for performing wireless communication by a second device, A step of receiving an inter-device transmission from a first device based on a transmission resource, The above transmission resource is selected from a set of candidate resources from which at least one second resource is excluded, wherein said at least one second resource is at least one resource associated with at least one first resource on which first sensing is performed based on a second beam that is not covered by the first beam, and A method wherein the first beam is a first receive beam or default receive beam of the first device corresponding to a transmit beam to be used for the device-to-device transmission.

18. In paragraph 17, Perform the second sensing, A step in which at least one third resource associated with a third beam is sensed as a result of the second sensing; and A method further comprising the step of transmitting information related to a non-preferred resource set including at least one third resource to the first device based on the third beam being different from a second receive beam corresponding to the transmit beam.

19. In a second device performing wireless communication, At least one transmitter / receiver; at least one processor; and At least one memory executable connected to said at least one processor and having instructions recorded thereon that cause said second device to perform operations based on being executed by said at least one processor, said operations comprising: A step of receiving an inter-device transmission from a first device based on a transmission resource, The above transmission resource is selected from a set of candidate resources from which at least one second resource is excluded, wherein said at least one second resource is at least one resource associated with at least one first resource on which first sensing is performed based on a second beam that is not covered by the first beam, and A second device, wherein the first beam is a first receive beam or default receive beam of the first device corresponding to a transmit beam to be used for the device-to-device transmission.

20. In paragraph 19, The above actions are: Perform the second sensing, A step in which at least one third resource associated with a third beam is sensed as a result of the second sensing; and A second device further comprising a step of transmitting information related to a non-preferred resource set including at least one third resource to the first device based on the third beam being different from a second receiving beam corresponding to the transmitting beam.

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