Method and device for allocating sidelink resources in NR V2X

Abstract

A method is proposed for a first device to perform wireless communication. The method may include the step of receiving information related to a configured grant (CG) resource from a base station and, based on the information related to the CG resource, performing a sidelink transmission to a second device. For example, the information related to the CG resource may include information related to the period of the CG resource, information related to the time domain of the CG resource, information related to the frequency domain of the CG resource, and information related to the time offset of the CG resource. For example, a first CG resource may be allocated after the time offset of the CG resource from a first point in time. For example, a second CG resource may be allocated after the period of the CG resource from the first CG resource. For example, the period of the CG resource may be a unit of a logical slot.

Description

Technology Field

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

[0002] Sidelink (SL) refers to a communication method in which User Equipment (UE) establishes a direct link to directly exchange voice or data between terminals without passing through a Base Station (BS). SL is being considered as a solution to address the burden on base stations caused by rapidly increasing data traffic.

[0003] V2X (vehicle-to-everything) refers to a communication technology that exchanges information with other vehicles, pedestrians, and infrastructure-equipped objects through wired or wireless communication. V2X can be classified into four types: V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure), V2N (vehicle-to-network), and V2P (vehicle-to-pedestrian). V2X communication can be provided through PC5 interfaces and / or Uu interfaces.

[0004] Meanwhile, as more communication devices require larger communication capacities, the need for improved mobile broadband communication compared to existing Radio Access Technology (RAT) is emerging. Accordingly, communication systems considering services or terminals sensitive to reliability and latency are being discussed; next-generation radio access technology that incorporates improved mobile broadband communication, Massive Machine Type Communication (MTC), and Ultra-Reliable and Low Latency Communication (URLC) can be referred to as new radio access technology (new RAT) or new radio (NR). Vehicle-to-everything (V2X) communication can also be supported in NR.

[0005] FIG. 1 is a diagram illustrating a comparison between V2X communication based on RAT prior to NR and V2X communication based on NR. An embodiment of FIG. 1 can be combined with various embodiments of the present disclosure.

[0006] Regarding V2X communication, prior to NR, RATs mainly discussed methods for providing safety services based on V2X messages such as BSM (Basic Safety Message), CAM (Cooperative Awareness Message), and DENM (Decentralized Environmental Notification Message). V2X messages can include location information, dynamic information, attribute information, etc. For example, a terminal can transmit a CAM of the periodic message type and / or a DENM of the event-triggered message type to another terminal.

[0007] For example, the CAM may include basic vehicle information such as dynamic state information of the vehicle, such as direction and speed, static data of the vehicle, such as dimensions, external lighting conditions, and route history. For example, a terminal may broadcast the CAM, and the latency of the CAM may be less than 100ms. For example, in the event of an unexpected situation such as a vehicle breakdown or accident, the terminal may generate a DENM and transmit it to other terminals. For example, all vehicles within the transmission range of the terminal may receive the CAM and / or DENM. In this case, the DENM may have a higher priority than the CAM.

[0008] Since then, regarding V2X communication, various V2X scenarios have been presented in NR. For example, various V2X scenarios may include vehicle platooning, advanced driving, extended sensors, remote driving, etc.

[0009] For example, based on vehicle platooning, vehicles can dynamically form groups and move together. For example, to perform platoon operations based on vehicle platooning, vehicles belonging to said group can receive periodic data from the lead vehicle. For example, vehicles belonging to said group can use said periodic data to reduce or increase the distance between vehicles.

[0010] For example, based on enhanced driving, vehicles can be semi-automated or fully automated. For example, each vehicle can adjust trajectories or maneuvers based on data acquired from local sensors of nearby vehicles and / or nearby logical entities. Additionally, for example, each vehicle can mutually share driving intentions with nearby vehicles.

[0011] For example, based on extended sensors, raw data or processed data or live video data acquired through local sensors can be exchanged between vehicles, logical entities, pedestrian terminals and / or V2X application servers. Thus, for example, a vehicle can perceive an environment that is enhanced compared to the environment it can detect using its own sensors.

[0012] For example, based on remote driving, a remote driver or V2X application can operate or control a remote vehicle for a person unable to drive or for a remote vehicle located in a dangerous environment. For example, in cases where the route is predictable, such as in public transportation, cloud computing-based driving can be used for the operation or control of the remote vehicle. Additionally, access to a cloud-based back-end service platform, for example, can be considered for remote driving.

[0013] Meanwhile, methods to specify service requirements for various V2X scenarios, such as vehicle platooning, enhanced driving, extended sensors, and remote driving, are being discussed in NR-based V2X communication. The problem to be solved

[0014] Meanwhile, Mode-1 operation of sidelink communication may refer to a resource allocation method or communication method in which the base station directly schedules the terminal's sidelink transmission resources through predefined signaling. For example, the terminal may be allocated by the base station PSCCH (physical sidelink control channel) resources, PSSCH (physical sidelink shared channel) resources, PSFCH (physical sidelink feedback channel) resources for performing sidelink communication, and PUCCH (physical uplink control channel) resources for transmitting HARQ (hybrid automatic repeat request) feedback to the base station. For example, the base station may transmit information related to the allocated resources to the terminal via sidelink DCI (downlink control information). For example, the information related to the allocated resources may include timing and location information regarding the resources allocated by the base station.

[0015] In Mode-1 operation, the base station can dynamically allocate resources to the terminal via a dynamic grant (DG). Additionally, in a configured grant type-1, the base station can allocate periodic transmission resources to the terminal via upper layer signaling (e.g., RRC signaling). Additionally, in a configured grant type-2, the base station allocates periodic transmission resources to the terminal via upper layer signaling (e.g., RRC signaling), and the base station can dynamically activate / deactivate the allocated resources via DCI. means of solving the problem

[0016] In one embodiment, a method is proposed for a first device to perform wireless communication. The method may include the step of receiving information related to a configured grant (CG) resource from a base station and, based on the information related to the CG resource, performing a sidelink transmission to a second device. For example, the information related to the CG resource may include information related to the period of the CG resource, information related to the time domain of the CG resource, information related to the frequency domain of the CG resource, and information related to the time offset of the CG resource. For example, a first CG resource may be allocated after the time offset of the CG resource from a first point in time. For example, a second CG resource may be allocated after the period of the CG resource from the first CG resource. For example, the period of the CG resource may be a unit of a logical slot. Effects of the invention

[0017] The terminal can efficiently perform sidelink communication. Brief explanation of the drawing

[0018] Figure 1 is a diagram illustrating a comparison between V2X communication based on RAT prior to NR and V2X communication based on NR. FIG. 2 shows the structure of an NR system according to one embodiment of the present disclosure. FIG. 3 shows a functional split between NG-RAN and 5GC according to one embodiment of the present disclosure. FIG. 4 shows a radio protocol architecture according to one embodiment of the present disclosure. FIG. 5 shows the structure of a wireless frame of NR according to one embodiment of the present disclosure. FIG. 6 shows a slot structure of an NR frame according to one embodiment of the present disclosure. FIG. 7 shows an example of a BWP according to one embodiment of the present disclosure. FIG. 8 shows a radio protocol architecture for SL communication according to one embodiment of the present disclosure. FIG. 9 shows a terminal performing V2X or SL communication according to one embodiment of the present disclosure. FIG. 10 illustrates a procedure in which a terminal performs V2X or SL communication according to a transmission mode, in accordance with one embodiment of the present disclosure. FIG. 11 shows three cast types according to one embodiment of the present disclosure. FIG. 12 is a diagram showing a CG type-1 resource allocated by a base station according to one embodiment of the present disclosure. FIG. 13 is a diagram showing a virtual CG Type-1 resource and a CG Type-1 resource allocated by a base station, according to one embodiment of the present disclosure. FIG. 14 illustrates a procedure in which a transmitting terminal performs sidelink communication with a receiving terminal based on CG resources allocated from a base station, according to one embodiment of the present disclosure. FIG. 15 illustrates a procedure according to one embodiment of the present disclosure in which a transmitting terminal determines a virtual CG resource and performs sidelink communication with a receiving terminal based on a CG resource allocated from a base station. FIG. 16 illustrates a method, according to one embodiment of the present disclosure, in which a first device performs sidelink communication with a second device based on information related to a CG resource. FIG. 17 illustrates a method, according to one embodiment of the present disclosure, in which a second device performs sidelink communication with a first device based on information related to a CG resource. FIG. 18 shows a communication system (1) according to one embodiment of the present disclosure. FIG. 19 shows a wireless device according to one embodiment of the present disclosure. FIG. 20 shows a signal processing circuit for a transmission signal according to one embodiment of the present disclosure. FIG. 21 shows a wireless device according to one embodiment of the present disclosure. FIG. 22 shows a portable device according to one embodiment of the disclosure. FIG. 23 shows a vehicle or an autonomous vehicle according to one embodiment of the present disclosure. Specific details for implementing the invention

[0019] In this specification, "A or B" may mean "only A," "only B," or "both A and B." Alternatively, in this specification, "A or B" may be interpreted as "A and / or B." For example, in this specification, "A, B or C" may mean "only A," "only B," "only C," or "any combination of A, B and C."

[0020] A slash ( / ) or a comma used in this specification may mean "and / or." For example, "A / B" may mean "A and / or B." Accordingly, "A / B" may mean "only A," "only B," or "both A and B." For example, "A, B, C" may mean "A, B or C."

[0021] 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 as synonymous with "at least one of A and B."

[0022] Additionally, in this specification, "at least one of A, B and C" may mean "only A," "only B," "only C," or "any combination of A, B and C." Also, "at least one of A, B or C" or "at least one of A, B and / or C" may mean "at least one of A, B and C."

[0023] Additionally, parentheses used in this specification 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 "PDDCH" 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."

[0024] Technical features described individually within a single drawing in this specification may be implemented individually or simultaneously.

[0025] The following technologies 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 using wireless technologies such as UTRA (universal terrestrial radio access) or CDMA2000. TDMA can be implemented using wireless technologies such as GSM (global system for mobile communications), GPRS (general packet radio service), and EDGE (enhanced data rates for GSM evolution). OFDMA can be implemented using wireless technologies such as IEEE (institute of electrical and electronics engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and E-UTRA (evolved UTRA). IEEE 802.16m is an evolution of IEEE 802.16e and provides backward compatibility with systems based on IEEE 802.16e. UTRA is part of UMTS (universal mobile telecommunications system). 3GPP (3rd generation partnership project) LTE (long term evolution) is part of E-UMTS (evolved UMTS) which uses E-UTRA (evolved-UMTS terrestrial radio access), employing OFDMA in the downlink and SC-FDMA in the uplink.LTE-A (advanced) is an evolution of 3GPP LTE.

[0026] 5G NR is a successor technology to LTE-A and is a new clean-slate type mobile communication system with characteristics such as high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, ranging from low frequency bands below 1 GHz to mid-frequency bands from 1 GHz to 10 GHz, and high frequency (millimeter wave) bands above 24 GHz.

[0027] For clarity of explanation, the description focuses on 5G NR, but the technical concept according to one embodiment of the present disclosure is not limited thereto.

[0028] FIG. 2 shows the structure of an NR system according to one embodiment of the present disclosure. The embodiment of FIG. 2 can be combined with various embodiments of the present disclosure.

[0029] Referring to FIG. 2, the NG-RAN (Next Generation - Radio Access Network) may include a base station (20) that provides user plane and control plane protocol termination to a terminal (10). For example, the base station (20) may include a gNB (next generation-Node B) and / or an eNB (evolved-Node B). For example, the terminal (10) may be fixed or mobile and may be referred to by other terms such as MS (Mobile Station), UT (User Terminal), SS (Subscriber Station), MT (Mobile Terminal), or Wireless Device. For example, the base station may be a fixed station communicating with the terminal (10) and may be referred to by other terms such as BTS (Base Transceiver System) or Access Point.

[0030] The embodiment of FIG. 2 illustrates a case including only gNB. Base stations (20) may be connected to each other via an Xn interface. Base stations (20) may be connected to a 5th generation core network (5G Core Network: 5GC) via an NG interface. More specifically, base stations (20) may be connected to an access and mobility management function (AMF) (30) via an NG-C interface and to a user plane function (UPF) (30) via an NG-U interface.

[0031] FIG. 3 illustrates a functional separation between NG-RAN and 5GC according to one embodiment of the present disclosure. The embodiment of FIG. 3 can be combined with various embodiments of the present disclosure.

[0032] Referring to FIG. 3, the gNB can provide functions such as Inter Cell Radio Resource Management (Inter Cell RRM), Radio Bearer Management (RB control), Connection Mobility Control, Radio Admission Control, Measurement Configuration & Provision, and Dynamic Resource Allocation. The AMF can provide functions such as Non Access Stratum (NAS) security and idle state mobility processing. The UPF can provide functions such as Mobility Anchoring and Protocol Data Unit (PDU) processing. The Session Management Function (SMF) can provide functions such as terminal IP (Internet Protocol) address allocation and PDU session control.

[0033] The layers of the Radio Interface Protocol between a terminal and a network can be classified into L1 (Layer 1), L2 (Layer 2), and L3 (Layer 3) based on the lower three layers of the Open System Interconnection (OSI) model, which is widely known in communication systems. Among these, the Physical Layer, belonging to Layer 1, provides Information Transfer Services using a physical channel, while the Radio Resource Control (RRC) layer, located at Layer 3, performs the role of controlling radio resources between the terminal and the network. To this end, the RRC layer exchanges RRC messages between the terminal and the base station.

[0034] FIG. 4 illustrates a radio protocol architecture according to one embodiment of the present disclosure. The embodiment of FIG. 4 may be combined with various embodiments of the present disclosure. Specifically, FIG. 4(a) illustrates a radio protocol architecture for a user plane, and FIG. 4(b) illustrates a radio protocol architecture for a control plane. The user plane is a protocol stack for user data transmission, and the control plane is a protocol stack for control signal transmission.

[0035] Referring to Fig. 4, the physical layer provides information transmission services to the upper layer using a physical channel. The physical layer is connected to the upper layer, the MAC (Medium Access Control) layer, through a transport channel. Data travels between the MAC layer and the physical layer through the transport channel. Transport channels are classified according to how and with what characteristics data is transmitted through a wireless interface.

[0036] Data travels between different physical layers, specifically between the physical layers of the transmitter and the receiver, through a physical channel. This physical channel can be modulated using Orthogonal Frequency Division Multiplexing (OFDM) and utilizes time and frequency as wireless resources.

[0037] The MAC layer provides services to the upper layer, the RLC (radio link control) layer, through logical channels. The MAC layer provides mapping functions from multiple logical channels to multiple transmission channels. Additionally, the MAC layer provides logical channel multiplexing functions through mapping from multiple logical channels to a single transmission channel. The MAC sublayer provides data transmission services over logical channels.

[0038] The RLC layer performs the concatenation, segmentation, and reassembly of RLC Serving Data Units (SDUs). To guarantee the various Quality of Service (QoS) required by the Radio Bearer (RB), 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 Requests (ARQ).

[0039] The RRC (Radio Resource Control) layer is defined only in the control plane. The RRC layer is responsible for controlling logical channels, transmission channels, and physical channels in relation to the configuration, reconfiguration, and release of wireless bearers. RB refers to the logical path provided by the first layer (physical layer or PHY layer) and the second layer (MAC layer, RLC layer, PDCP (Packet Data Convergence Protocol) layer) for data transmission between a terminal and a network.

[0040] The functions of the PDCP layer in the user plane include the delivery of user data, header compression, and ciphering. The functions of the PDCP layer in the control plane include the delivery of control plane data and encryption / integrity protection.

[0041] The SDAP (Service Data Adaptation Protocol) layer is defined only in the user plane. The SDAP layer performs tasks such as mapping QoS flows between data radio bearers and marking QoS flow identifiers (IDs) within downlink and uplink packets.

[0042] The establishment of an RB refers to the process of defining the characteristics of the wireless protocol layer and channel to provide specific services, and setting their respective specific parameters and operating methods. RBs can be further divided into two types: SRBs (Signaling Radio Bearers) and DRBs (Data Radio Bearers). SRBs are used as a channel for transmitting RRC messages in the control plane, while DRBs are used as a channel for transmitting user data in the user plane.

[0043] 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 maintains a connection with the core network while being able to release the connection with the base station.

[0044] Downlink transmission channels for transmitting data from a network to a terminal include a Broadcast Channel (BCH) for transmitting system information and a Shared Channel (SCH) for transmitting user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services may be transmitted via the Shared Channel (SCH) or via a separate Multicast Channel (MCH). Meanwhile, uplink transmission channels for transmitting data from a terminal to a network include a Random Access Channel (RACH) for transmitting initial control messages and a Shared Channel (SCH) for transmitting user traffic or control messages.

[0045] Logical channels that are above the transmission channel and mapped to the transmission channel include BCCH (Broadcast Control Channel), PCCH (Paging Control Channel), CCCH (Common Control Channel), MCCH (Multicast Control Channel), and MTCH (Multicast Traffic Channel).

[0046] A physical channel consists of multiple OFDM symbols in the time domain and multiple subcarriers in the frequency domain. A single subframe consists of multiple OFDM symbols in the time domain. A resource block is a resource allocation unit and consists of multiple OFDM symbols and multiple subcarriers. Additionally, each subframe may utilize specific subcarriers of specific OFDM symbols (e.g., the first OFDM symbol) within that subframe for the Physical Downlink Control Channel (PDCCH), i.e., the Layer 1 (L1) / Layer 2 (L2) control channel. The Transmission Time Interval (TTI) is the unit time for subframe transmission.

[0047] FIG. 5 shows the structure of a wireless frame of NR according to one embodiment of the present disclosure. The embodiment of FIG. 5 can be combined with various embodiments of the present disclosure.

[0048] Referring to FIG. 5, radio frames can be used for uplink and downlink transmission in NR. The radio frame has a length of 10 ms and can be defined as two 5 ms half-frames (HF). A half-frame may contain five 1 ms subframes (SF). A subframe may be divided into one or more slots, and the number of slots within a subframe may be determined by the subcarrier spacing (SCS). Each slot may contain 12 or 14 OFDM(A) symbols according to the cyclic prefix (CP).

[0049] When normal CP is used, each slot may contain 14 symbols. When extended CP is used, each slot may contain 12 symbols. Here, the symbols may include OFDM symbols (or CP-OFDM symbols) and SC-FDMA (Single Carrier - FDMA) symbols (or DFT-s-OFDM (Discrete Fourier Transform-spread-OFDM) symbols).

[0050] Table 1 below shows the number of symbols per slot (N) according to the SCS setting (u) when normal 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.

[0051] SCS (15*2 u ) N slot symb N frame,u slot N subframe,u slot 15KHz (u=0) 14 10 1 30KHz (u=1) 14 20 2 60KHz (u=2) 14 40 4 120KHz (u=3) 14 80 8 240KHz (u=4) 14 160 16

[0052] Table 2 shows the number of symbols per slot, the number of slots per frame, and the number of slots per subframe according to the SCS when an extended CP is used.

[0053] SCS (15*2 u ) N slot symb N frame,u slot N subframe,u slot 60KHz (u=2) 12 40 4

[0054] In an NR system, the OFDM(A) numerology (e.g., SCS, CP length, etc.) can be configured differently among multiple cells that are merged into a single terminal. Accordingly, the (absolute time) interval of a time resource (e.g., subframe, slot, or TTI) (collectively referred to as TU (Time Unit) for convenience) composed of the same number of symbols can be configured differently among the merged cells.

[0055] In NR, multiple numerologies or SCSs may be supported to support various 5G services. For example, if the SCS is 15 kHz, a wide area in traditional cellular bands may be supported, and if the SCS is 30 kHz / 60 kHz, dense-urban, lower latency, and wider carrier bandwidth may be supported. If the SCS is 60 kHz or higher, a bandwidth greater than 24.25 GHz may be supported to overcome phase noise.

[0056] The NR frequency band can be defined by two types of frequency ranges. The two types of frequency ranges may be FR1 and FR2. The numerical values ​​of the frequency ranges may change, for example, as shown in Table 3 below. Among the frequency ranges used in an NR system, FR1 may mean "sub 6GHz range" and FR2 may mean "above 6GHz range" and may be referred to as millimeter wave (mmW).

[0057] Frequency Range designation Corresponding frequency range Subcarrier Spacing (SCS) FR1 450MHz - 6000MHz 15, 30, 60kHz FR2 24250MHz - 52600MHz 60, 120, 240kHz

[0058] As described above, the numerical value of the frequency range of the NR system may change. For example, FR1 may include a band of 410 MHz to 7125 MHz as shown in Table 4 below. That is, FR1 may include a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher. For example, the frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher included within FR1 may include an unlicensed band. The unlicensed band may be used for various purposes, for example, for communication for vehicles (e.g., autonomous driving).

[0059] Frequency Range designation Corresponding frequency range Subcarrier Spacing (SCS) FR1 410MHz - 7125MHz 15, 30, 60kHz FR2 24250MHz - 52600MHz 60, 120, 240kHz

[0060] FIG. 6 shows a slot structure of an NR frame according to one embodiment of the present disclosure. The embodiment of FIG. 6 can be combined with various embodiments of the present disclosure.

[0061] Referring to FIG. 6, a slot contains multiple symbols in the time domain. For example, in the case of a normal CP, one slot may contain 14 symbols, but in the case of an extended CP, one slot may contain 12 symbols. Alternatively, in the case of a normal CP, one slot may contain 7 symbols, but in the case of an extended CP, one slot may contain 6 symbols.

[0062] A carrier includes multiple subcarriers in the frequency domain. A Resource Block (RB) can be defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A Bandwidth Part (BWP) can be defined as multiple consecutive (P)RBs ((Physical) Resource Blocks) in the frequency domain and can correspond to a single numerology (e.g., SCS, CP length, etc.). A carrier can include up to N (e.g., 5) BWPs. Data communication can be performed through the active BWPs. Each element can be referred to as a Resource Element (RE) in a resource grid and can be mapped to a single complex symbol.

[0063] Meanwhile, a wireless interface between terminals or a wireless interface between a terminal and a network may be composed of L1, L2, and L3 layers. In various embodiments of the present disclosure, L1 layer may refer to the physical layer. Additionally, for example, L2 layer may refer to at least one of the MAC layer, RLC layer, PDCP layer, and SDAP layer. Additionally, for example, L3 layer may refer to the RRC layer.

[0064] The Bandwidth Part (BWP) and Carrier are described below.

[0065] A Bandwidth Part (BWP) may be a continuous set of Physical Resource Blocks (PRB) in a given Numenology. A PRB may be selected from a continuous subset of Common Resource Blocks (CRB) for a given Numenology on a given carrier.

[0066] By using Bandwidth Adaptation (BA), the terminal's receiving bandwidth and transmission bandwidth do not need to be as large as the cell's bandwidth, and the terminal's receiving bandwidth and transmission bandwidth can be adjusted. For example, the network / base station can notify the terminal of bandwidth adjustment. For example, the terminal can receive information / settings for bandwidth adjustment from the network / base station. In this case, the terminal can perform bandwidth adjustment based on the received information / settings. For example, the bandwidth adjustment may include reducing / expanding the bandwidth, changing the position of the bandwidth, or changing the subcarrier spacing of the bandwidth.

[0067] For example, bandwidth may be reduced during periods of low activity to save power. For example, the position of bandwidth may be shifted within the frequency domain. For example, the position of bandwidth may be shifted within the frequency domain to increase scheduling flexibility. For example, the subcarrier spacing of bandwidth may be changed. For example, the subcarrier spacing of bandwidth may be changed to allow for different services. A subset of the total cell bandwidth of a cell may be referred to as a Bandwidth Part (BWP). BA can be performed by the base station / network setting the BWP for the terminal and by the base station / network notifying the terminal of the currently active BWP among the set BWPs.

[0068] For example, the BWP may be at least one of an active BWP, an initial BWP, and / or a default BWP. For example, the terminal may not monitor downlink radio link quality on DL BWPs other than the active DL BWP on the PCell (primary cell). For example, the terminal may not receive PDCCH, PDSCH, or CSI-RS (channel state information reference signal) (except RRM) outside of the active DL BWP. For example, the terminal may not trigger Channel State Information (CSI) reporting for an inactive DL BWP. For example, the terminal may not transmit PUCCH or PUSCH outside of the active UL BWP. For example, for the downlink, the initial BWP may be given as a successive set of RBs for the RMSI CORESET (set by the PBCH). For example, in the case of an uplink, an initial BWP may be provided by a system information block (SIB) for random access procedures. For example, a default BWP may be set by an upper layer. For example, the initial value of the default BWP may be an initial DL BWP. For energy saving, if a terminal fails to detect downlink control information (DCI) for a certain period, the terminal may switch its active BWP to the default BWP.

[0069] Meanwhile, a BWP may be defined for an SL. The same SL BWP may be used for transmission and reception. For example, a transmitting terminal may transmit an SL channel or an SL signal on a specific BWP, and a receiving terminal may receive an SL channel or an SL signal on said specific BWP. In a licensed carrier, an SL BWP may be defined separately from a Uu BWP, and the SL BWP may have separate configuration signaling from the Uu BWP. For example, a terminal may receive a configuration for an SL BWP from a base station / network. An SL BWP may be (pre-)configured within the carrier for out-of-coverage NR V2X terminals and RRC_IDLE terminals. For a terminal in RRC_CONNECTED mode, at least one SL BWP may be activated within the carrier.

[0070] FIG. 7 illustrates an example of a BWP according to an embodiment of the present disclosure. The embodiment of FIG. 7 may be combined with various embodiments of the present disclosure. In the embodiment of FIG. 7, it is assumed that there are three BWPs.

[0071] Referring to FIG. 7, the common resource block (CRB) may be a numbered carrier resource block extending from one end of the carrier band to the other. And, the PRB may be a numbered resource block within each BWP. Point A may indicate a common reference point for the resource block grid.

[0072] BWP is point A, offset from point A (N start BWP ) and bandwidth (N size BWPIt can be set by ). For example, point A may be an external reference point of the PRB of a carrier where the subcarrier 0 of all numerologies (e.g., all numerologies supported by the network in that carrier) is aligned. For example, offset may be the PRB interval between the lowest subcarrier in a given numerology and point A. For example, bandwidth may be the number of PRBs in a given numerology.

[0073] V2X or SL communication will be explained below.

[0074] FIG. 8 illustrates a radio protocol architecture for SL communication according to one embodiment of the present disclosure. The embodiment of FIG. 8 may be combined with various embodiments of the present disclosure. Specifically, FIG. 8 (a) illustrates a user plane protocol stack, and FIG. 8 (b) illustrates a control plane protocol stack.

[0075] The Sidelink Synchronization Signal (SLSS) and synchronization information are described below.

[0076] SLSS is an SL-specific sequence that 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 use S-PSS to detect a primary signal and obtain synchronization. For example, a terminal may use S-PSS and S-SSSS to obtain detailed synchronization and detect a synchronization signal ID.

[0077] The PSBCH (Physical Sidelink Broadcast Channel) may be a (broadcast) channel through which basic (system) information that the terminal must know first is transmitted before transmitting or receiving SL signals. For example, the basic information may include information related to SLSS, Duplex Mode (DM), TDD UL / DL (Time Division Duplex Uplink / Downlink) configuration, information related to resource pools, types of applications related to SLSS, subframe offsets, broadcast information, etc. For example, to evaluate PSBCH performance, in NR V2X, the payload size of the PSBCH may be 56 bits, including a 24-bit CRC.

[0078] S-PSS, S-SSS, and PSBCH may be included in a block format that supports periodic transmission (e.g., SL SS (Synchronization Signal) / PSBCH block, hereinafter S-SSB (Sidelink-Synchronization Signal Block)). The S-SSB may have the same numerology (i.e., SCS and CP lengths) as the PSCCH (Physical Sidelink Control Channel) / PSSCH (Physical Sidelink Shared Channel) within the carrier, and the transmission bandwidth may be within a (pre-)set SL BWP (Sidelink BWP). For example, the bandwidth of the S-SSB may be 11 RB (Resource Block). For example, the PSBCH may span 11 RB. Additionally, the frequency position of the S-SSB may be (pre-)set. Therefore, the terminal does not need to perform hypothesis detection at the frequency to discover the S-SSB in the carrier.

[0079] FIG. 9 shows a terminal performing V2X or SL communication according to one embodiment of the present disclosure. The embodiment of FIG. 9 may be combined with various embodiments of the present disclosure.

[0080] Referring to FIG. 9, in V2X or SL communication, the term terminal may primarily refer to a user's terminal. However, if network equipment such as a base station transmits and receives signals according to the communication method between terminals, the base station may also be considered a type of terminal. For example, terminal 1 may be a first device (100), and terminal 2 may be a second device (200).

[0081] For example, terminal 1 can select a resource unit corresponding to a specific resource within a resource pool, which represents a set of resources. Then, terminal 1 can transmit an SL signal using the said resource unit. For example, terminal 2, which is a receiving terminal, can be configured with a resource pool in which terminal 1 can transmit a signal, and can detect terminal 1's signal within said resource pool.

[0082] Here, if terminal 1 is within the connection range of the base station, the base station may inform terminal 1 of the resource pool. On the other hand, if terminal 1 is outside the connection range of the base station, another terminal may inform terminal 1 of the resource pool, or terminal 1 may use a pre-configured resource pool.

[0083] Generally, a resource pool can be composed of multiple resource units, and each terminal can select one or more resource units to use for its SL signal transmission.

[0084] Resource allocation in SL is explained below.

[0085] FIG. 10 illustrates a procedure in which a terminal performs V2X or SL communication according to a transmission mode, according to one embodiment of the present disclosure. The embodiment of FIG. 10 may be combined with various embodiments of the present disclosure. In various embodiments of the present disclosure, the transmission mode may be referred to as a mode or a resource allocation mode. Hereinafter, for convenience of explanation, the transmission mode in LTE may be referred to as an LTE transmission mode, and the transmission mode in NR may be referred to as an NR resource allocation mode.

[0086] For example, FIG. 10(a) illustrates a terminal operation associated with LTE transmission mode 1 or LTE transmission mode 3. Or, for example, FIG. 10(a) illustrates a terminal operation associated with NR resource allocation mode 1. For example, LTE transmission mode 1 can be applied to general SL communication, and LTE transmission mode 3 can be applied to V2X communication.

[0087] For example, FIG. 10(b) illustrates a terminal operation associated with LTE transmission mode 2 or LTE transmission mode 4. Or, for example, FIG. 10(b) illustrates a terminal operation associated with NR resource allocation mode 2.

[0088] Referring to FIG. 10(a), in LTE transmission mode 1, LTE transmission mode 3, or NR resource allocation mode 1, the base station can schedule SL resources to be used by the terminal for SL transmission. For example, the base station can perform resource scheduling to terminal 1 via PDCCH (more specifically, DCI (Downlink Control Information)), and terminal 1 can perform V2X or SL communication with terminal 2 according to the resource scheduling. For example, terminal 1 can transmit SCI (Sidelink Control Information) to terminal 2 via PSCCH (Physical Sidelink Control Channel) and then transmit data based on the SCI to terminal 2 via PSSCH (Physical Sidelink Shared Channel).

[0089] Referring to FIG. 10(b), in LTE transmission mode 2, LTE transmission mode 4, or NR resource allocation mode 2, the terminal can determine an SL transmission resource within an SL resource set by the base station / network or a preset SL resource. For example, the set SL resource or the preset SL resource may be a resource pool. For example, the terminal may autonomously select or schedule a resource for SL transmission. For example, the terminal may perform SL communication by selecting a resource itself within the set resource pool. For example, the terminal may select a resource itself within a selection window by performing a sensing and resource (re)selection procedure. For example, the sensing may be performed on a subchannel basis. Then, Terminal 1, having selected a resource itself within the resource pool, can transmit an SCI to Terminal 2 via PSCCH, and then transmit data based on the SCI to Terminal 2 via PSSCH.

[0090] FIG. 11 illustrates three cast types according to one embodiment of the present disclosure. The embodiment of FIG. 11 may be combined with various embodiments of the present disclosure. Specifically, FIG. 11 (a) illustrates a broadcast type SL communication, FIG. 11 (b) illustrates a unicast type SL communication, and FIG. 11 (c) illustrates a group cast type SL communication. In the case of a unicast type SL communication, a terminal may perform one-to-one communication with another terminal. In the case of a group cast type SL communication, a terminal may perform SL communication with one or more terminals within a group to which it belongs. In various embodiments of the present disclosure, SL group cast communication may be replaced with SL multicast communication, SL one-to-many communication, etc.

[0091] Meanwhile, in various embodiments of the present disclosure, for example, a transmitting terminal (TX UE) may be a terminal that transmits data to a (target) receiving terminal (RX UE). For example, the TX UE may be a terminal that performs PSCCH and / or PSSCH transmission. And / or, for example, the TX UE may be a terminal that transmits SL CSI-RS and / or SL CSI report request indicators to the (target) RX UE. And / or, for example, the TX UE may be a terminal that transmits a (control) channel (e.g., PSCCH, PSSCH, etc.) and / or a reference signal (e.g., DM-RS, CSI-RS, etc.) on said (control) channel to be used for SL RLM (radio link monitoring) and / or SL RLF (radio link failure) operations of the (target) RX UE.

[0092] Meanwhile, in various embodiments of the present disclosure, for example, the receiving terminal (RX UE) may be a terminal that transmits SL HARQ feedback to the TX UE based on whether the decoding of data received from the transmitting terminal (TX UE) is successful and / or whether the detection / decoding of the PSCCH (related to PSSCH scheduling) transmitted by the TX UE is successful. And / or, for example, the RX UE may be a terminal that performs SL CSI transmission to the TX UE based on the SL CSI-RS and / or SL CSI report request indicators received from the TX UE. And / or, for example, the RX UE may be a terminal that transmits to the TX UE a measured SL (L1) RSRP value based on the (predefined) reference signal and / or SL (L1 (layer 1)) RSRP (reference signal received power) report request indicators received from the TX UE. And / or, for example, the RX UE may be a terminal that transmits its own data to the TX UE. And / or, for example, the RX UE may be a terminal that performs SL RLM and / or SL RLF operations based on a (pre-set) (control) channel received from the TX UE and / or a reference signal on the (control) channel.

[0093] Meanwhile, in various embodiments of the present disclosure, for example, when an RX UE transmits SL HARQ feedback information regarding a PSSCH and / or PSCCH received from a TX UE, the following methods or some of the following methods may be considered. Here, for example, the following methods or some of the following methods may be applied only in a limited manner when the RX UE successfully decodes / detects the PSCCH that schedules the PSSCH.

[0094] (1) Group Cast Option 1: NACK (no acknowledgment) information can be sent to the TX UE only when the RX UE fails to decode / receive PSSCH received from the TX UE.

[0095] (2) Group Cast Option 2: If the RX UE succeeds in decoding / receiving PSSCH received from the TX UE, it can send ACK information to the TX UE, and if it fails to decode / receive PSSCH, it can send NACK information to the TX UE.

[0096] Meanwhile, in various embodiments of the present disclosure, for example, the TX UE may transmit the following information or some of the following information to the RX UE via an SCI. Here, for example, the TX UE may transmit some or all of the following information to the RX UE via a first SCI (FIRST SCI) and / or a second SCI (SECOND SCI).

[0097] - PSSCH (and / or PSCCH) related resource allocation information (e.g., time / frequency resource locations / counts, resource reservation information (e.g., periods))

[0098] - SL CSI Report Request Indicator or SL (L1) RSRP (reference signal received power) (and / or SL (L1) RSRQ (reference signal received quality) and / or SL (L1) RSSI (reference signal strength indicator)) Report Request Indicator

[0099] - SL CSI transmission indicator (on PSSCH) (or SL (L1) RSRP (and / or SL (L1) RSRQ and / or SL (L1) RSSI) information transmission indicator)

[0100] - MCS Information

[0101] - TX POWER Information

[0102] - L1 DESTINATION ID information and / or L1 SOURCE ID information

[0103] - SL HARQ PROCESS ID Information

[0104] - NDI (new data indicator) information

[0105] - RV (redundancy version) information

[0106] - QoS information (related to transmission TRAFFIC / PACKET) (e.g., PRIORITY information)

[0107] - SL CSI-RS transmission indicator or information on the number of (transmitting) SL CSI-RS antenna ports

[0108] - TX UE location information or the location (or distance area) information of the target RX UE (for which SL HARQ feedback is requested).

[0109] - Information on reference signals (e.g., DM-RS, etc.) related to the decoding (and / or channel estimation) of data transmitted through PSSCH. For example, information related to the pattern of the (time-frequency) mapping resource of DM-RS, RANK information, antenna port index information, antenna port count information, etc.

[0110] Meanwhile, in various embodiments of the present disclosure, for example, since the TX UE can transmit an SCI, a first SCI (FIRST SCI), and / or a second SCI (SECOND SCI) to the RX UE via PSCCH, the PSCCH may be replaced / substituted with at least one of the SCI, the first SCI, and / or the second SCI. And / or, for example, the SCI may be replaced / substituted with the PSCCH, the first SCI, and / or the second SCI. And / or, for example, since the TX UE can transmit a second SCI to the RX UE via PSSCH, the PSSCH may be replaced / substituted with the second SCI.

[0111] Meanwhile, in various embodiments of the present disclosure, for example, when SCI constituent fields are divided into two groups considering a (relatively) high SCI payload size, a first SCI including a first group of SCI constituent fields is 1 st A second SCI that can be referred to as SCI and includes a second SCI constituent field group is 2 nd It can be referred to as SCI. Also, for example, 1 st SCI can be transmitted to the receiving terminal via PSCCH. Also, for example, 2 nd SCI can be transmitted to the receiving terminal via (independent) PSCCH, or piggybacked with data via PSSCH.

[0112] Meanwhile, in various embodiments of the present disclosure, for example, “configuration” or “definition” may mean (PRE)CONFIGURATION (resource pool specificly) from a base station or network (via predefined signaling (e.g., SIB, MAC, RRC, etc.)).

[0113] Meanwhile, in various embodiments of the present disclosure, for example, RLF can be determined based on an OUT-OF-SYNCH (OOS) indicator or an IN-SYNCH (IS) indicator, so it can be replaced / substituted with OUT-OF-SYNCH (OOS) or IN-SYNCH (IS).

[0114] Meanwhile, in various embodiments of the present disclosure, for example, RB may be replaced / substituted with SUBCARRIER. Also, for example, in the present invention, PACKET or TRAFFIC may be replaced / substituted with TB or MAC PDU depending on the layer being transmitted.

[0115] Meanwhile, in various embodiments of the present disclosure, CBG may be replaced / substituted with TB.

[0116] Meanwhile, in various embodiments of the present disclosure, for example, the SOURCE ID may be replaced / substituted with the DESTINATION ID.

[0117] Meanwhile, in various embodiments of the present disclosure, for example, the L1 ID may be replaced / substituted with the L2 ID. For example, the L1 ID may be the L1 SOURCE ID or the L1 DESTINATION ID. For example, the L2 ID may be the L2 SOURCE ID or the L2 DESTINATION ID.

[0118] Meanwhile, in various embodiments of the present disclosure, for example, the operation of a transmitting terminal reserving / selecting / determining a retransmission resource may mean the operation of a transmitting terminal reserving / selecting / determining a potential retransmission resource whose actual use is determined based on SL HARQ feedback information received from a receiving terminal.

[0119] Meanwhile, in various embodiments of the present disclosure, the SUB-SELECTION WINDOW may be mutually substituted with the SELECTION WINDOW and / or a set of a number of resources within the SELECTION WINDOW.

[0120] Meanwhile, in various embodiments of the present disclosure, SL MODE 1 may refer to a resource allocation method or communication method in which a base station directly schedules the sidelink transmission (SL TX) resources of a terminal through predefined signaling (e.g., DCI). Additionally, for example, SL MODE 2 may refer to a resource allocation method or communication method in which a terminal independently selects SL TX resources from a base station or network, or from a pre-configured resource pool. For example, a terminal performing SL communication based on SL MODE 1 may be referred to as MODE 1 UE or MODE 1 TX UE, and a terminal performing SL communication based on SL MODE 2 may be referred to as MODE 2 UE or MODE 2 TX UE.

[0121] Meanwhile, in various embodiments of the present disclosure, for example, a dynamic grant (DG) may be interchangeable with a confined grant (CG) and / or an SPS grant. For example, a dynamic grant may be interchangeable with a combination of a confined grant and an SPS grant. In various embodiments of the present disclosure, a confined grant may include at least one of a confined grant type 1 and / or a confined grant type 2. For example, in confined grant type 1, the grant may be provided by RRC signaling and may be stored as a confined grant. For example, in the configured grant type 2, the grant may be provided by PDCCH and may be saved or deleted as a configured grant based on L1 signaling indicating the activation or deactivation of the grant.

[0122] Meanwhile, in various embodiments of the present disclosure, a channel may be interchanged with a signal. For example, the transmission and reception of a channel may include the transmission and reception of a signal. For example, the transmission and reception of a signal may include the transmission and reception of a channel. Additionally, for example, a cast may be interchanged with at least one of a unicast, a group cast, and / or a broadcast. For example, a cast type may be interchanged with at least one of a unicast, a group cast, and / or a broadcast.

[0123] Meanwhile, in various embodiments of the present disclosure, resources may be interchangeable with slots or symbols. For example, resources may include slots and / or symbols.

[0124] Meanwhile, in various embodiments of the present disclosure, blind retransmission may mean that the TX UE performs retransmission without receiving SL HARQ feedback information from the RX UE. For example, SL HARQ feedback-based retransmission may mean that the TX UE determines whether to perform retransmission based on SL HARQ feedback information received from the RX UE. For example, if the TX UE receives NACK and / or DTX information from the RX UE, the TX UE may perform retransmission to the RX UE.

[0125] Meanwhile, in various embodiments of the present disclosure, for example, for convenience of explanation, the (physical) channel used when the RX UE transmits at least one of the following information to the TX UE may be called PSFCH.

[0126] - SL HARQ Feedback, SL CSI, SL (L1) RSRP

[0127] Meanwhile, in various embodiments of the present disclosure, the Uu channel may include a UL channel and / or a DL channel. For example, the UL channel may include PUSCH, PUCCH, SRS, etc. For example, the DL channel may include PDCCH, PDSCH, PSS / SSS, etc. For example, the SL channel may include PSCCH, PSSCH, PSFCH, PSBCH, PSSS / SSSS, etc.

[0128] Meanwhile, in various embodiments of the present disclosure, sidelink information may include at least one of a sidelink message, a sidelink packet, a sidelink service, sidelink data, sidelink control information, and / or a sidelink TB (Transport Block). For example, sidelink information may be transmitted via PSSCH and / or PSCCH.

[0129] Meanwhile, Mode-1 operation of sidelink communication may refer to a resource allocation method or communication method in which the base station directly schedules the terminal's sidelink transmission resources through predefined signaling. For example, the terminal may be allocated by the base station PSCCH resources, PSSCH resources, PSFCH resources for performing sidelink communication, and PUCCH resources for transmitting HARQ feedback to the base station. For example, the base station may transmit information related to the allocated resources to the terminal via the sidelink DCI. For example, the information related to the allocated resources may include timing and location information regarding the resources allocated by the base station.

[0130] In Mode-1 operation, the base station can dynamically allocate resources to the terminal via a dynamic grant (DG). Additionally, in a configured grant type-1, the base station can allocate periodic transmission resources to the terminal via upper layer signaling (e.g., RRC signaling). Additionally, in a configured grant type-2, the base station allocates periodic transmission resources to the terminal via upper layer signaling (e.g., RRC signaling), and the base station can dynamically activate / deactivate the allocated resources via DCI.

[0131] The present disclosure describes a method for a base station to efficiently allocate CG type-1 resources or CG type-2 resources to a terminal.

[0132] For example, CG Type-1 and CG Type-2 allow a base station to allocate periodic resources through RRC signaling. For example, the information set by the RRC may include at least one of offset information, period information, or time domain resource allocation (TDRA) information. For example, the offset information may be information related to the timing offset for the initial CG resource. For example, the period information may be information regarding the interval between CG resources. For example, the TDRA information may include at least one of information related to the time domain of the CG resource or information related to the frequency domain of the CG resource. For example, the TDRA information may include at least one of the starting position of the CG resource, the length of the CG resource, or the timing offset (e.g., K2 timing offset).

[0133] For example, in CG type-1, the information set by RRC may include offset information, period information, and TDRA information.

[0134] For example, in CG Type-2, the information set by the RRC may include period information. Also, for example, in CG Type-2, TDRA information and offset information may be transmitted to the terminal via DCI.

[0135] According to one embodiment of the present disclosure, in CG Type-2, when a terminal receives configuration information related to a CG resource through RRC signaling, the terminal may use a resource related to a sidelink resource pool that exists at the earliest time after a timing offset in physical slot units (e.g., K2 timing offset) from the time when the terminal receives a DCI instructing the activation / deactivation related to CG Type-2 from a base station as the first CG Type-2 resource. Additionally, for example, the terminal may use CG Type-2 resources that exist at every logical slot unit period from the first CG Type-2 resource. For example, the CG Type-2 resource may be a resource corresponding to the size and location of the resource based on TDRA information.

[0136] A physical slot unit may be an absolute unit of time. For example, a physical slot may include slots related to the uplink, slots related to the downlink, and slots related to the sidelink. Additionally, a logical slot unit may be a unit of time based on sidelink slots. For example, a logical slot may include only sidelink slots.

[0137] FIG. 12 is a diagram showing a CG type-1 resource allocated by a base station according to one embodiment of the present disclosure. FIG. 12 may be combined with various embodiments of the present disclosure.

[0138] Referring to FIG. 12, in CG Type-1, the terminal can use the first CG Type-1 resource associated with the sidelink resource pool existing at the earliest time after an offset of physical slot units from SFN 0. Subsequently, the terminal can use the CG Type-1 resources existing at each logical slot unit period from the first CG Type-1 resource. For example, the CG Type-1 resource may be a resource corresponding to the size and location of the resource based on TDRA information. For example, SFN 0 may be the starting interval within the SFN time period that repeats periodically every 10240 ms.

[0139] FIG. 13 is a diagram showing a virtual CG Type-1 resource and a CG Type-1 resource allocated by a base station, according to one embodiment of the present disclosure. FIG. 13 may be combined with various embodiments of the present disclosure.

[0140] Referring to FIG. 13, the terminal can determine the first virtual CG Type-1 resource by identifying the resource associated with the sidelink resource pool that exists at the earliest point in time after an offset of physical slot units from SFN 0. Subsequently, the terminal can determine the virtual CG Type-1 resources that exist at each period of physical slot units from the first virtual CG Type-1 resource. For example, the virtual CG Type-1 resource may be a resource corresponding to the size and location of the resource based on TDRA information. For example, SFN 0 may be the starting interval within the SFN time period that repeats periodically every 10240 ms.

[0141] For example, if a terminal receives RRC configuration information allocating a CG Type-1 resource at any point in time, the terminal may determine the aforementioned virtual CG Type-1 resource from the RRC configuration information. For example, the terminal may use a resource related to the sidelink resource pool existing at the earliest point in time after confirming the RRC configuration information as the initial CG Type-1 resource. Subsequently, the terminal may use CG Type-1 resources existing at each logical slot unit period from the initial CG Type-1 resource. For example, the CG Type-1 resource may be a resource corresponding to the size and location of the resource based on TDRA information. For example, SFN 0 may be the starting interval within an SFN time period that repeats periodically every 10240ms.

[0142] According to various embodiments of the present disclosure, a base station can efficiently configure / indicate a CG type-1 resource or a CG type-2 resource allocated to a terminal for periodic data transmission.

[0143] Meanwhile, for example, when data to be transmitted by a terminal occurs, the DG resource is a resource allocated by dynamically requesting resources from the base station, and the DG resource may be a suitable resource for transmitting data non-periodically. Additionally, the CG resource may be a suitable resource for transmitting data periodically due to the characteristics of the service. Alternatively, if an operation to transmit data periodically is expected, the terminal may reserve a periodic transmission resource in advance through the CG resource and then receive the resource allocation. Accordingly, a transmission period value for the CG resource can be set for the terminal, and the terminal can transmit data through the resource corresponding to the location of the CG resource.

[0144] In this case, for example, in the case of sidelink communication, the PSCCH, PSSCH, and PSFCH resources required for data transmission and reception may exist in a resource pool. That is, the resource pool may not be defined in a physical slot area but in a logical slot area. In such a case, if the transmission period of the CG resource is set through the logical slot index, there is a high probability that non-periodic transmission will occur in physical time.

[0145] The present disclosure describes a method for performing periodic transmission through a CG resource set in sidelink communication.

[0146] In sidelink communication, a resource allocated via CG-Type-1 or CG-Type-2 may be a periodic transmission resource. A base station may set or signal said transmission resource to a terminal via RRC or sidelink DCI. In this case, for example, the terminal may obtain the location and transmission period of the periodic transmission resource based on CG information received via RRC or sidelink DCI. The base station may signal the transmission period of the CG resource to the terminal in units of physical slots. That is, the terminal may use the CG resource at every transmission period in units of physical slots indicated via RRC or sidelink DCI. The terminal may transmit PSCCH / PSSCH / PSFCH through said CG resource.

[0147] In such cases, for example, since the CG resource indicated via RRC or Sidelink DCI is based on physical slot units, it may be a resource included in the Sidelink resource pool used for sidelink communication or a resource not included in the Sidelink resource pool. Therefore, if the CG resource existing for each transmission cycle indicated via RRC or Sidelink DCI is not included in the Sidelink resource pool, the terminal may find it difficult to transmit PSCCH / PSSCH / PSFCH to perform sidelink communication.

[0148] For example, if a CG resource indicated in physical slot units via RRC or sidelink DCI is not included in the sidelink resource pool, the terminal may use a resource included in the sidelink resource pool closest to the CG resource in the time domain. Or, for example, the terminal may use a resource included in a valid sidelink resource pool closest to the CG resource in the time domain that is not reserved for use by another device. The terminal may transmit PSCCH / PSSCH / PSFCH through the resource. For example, even if the data transmitted through the CG resource does not satisfy the packet delay budget (PDB) obtained by the latency requirement, the terminal may transmit data within a range that satisfies the PDB on average. For example, even if the data transmitted through every CG resource does not perfectly satisfy the PDB, the terminal may transmit data to satisfy the PDB on average.

[0149] According to one embodiment of the present disclosure, if a CG resource indicated in physical slot units via RRC or sidelink DCI must strictly satisfy the PDB and is not included in the sidelink resource pool, the terminal may use a resource included in the sidelink resource pool that precedes the CG resource in the time domain and is closest to the CG resource. Or, for example, the terminal may use a resource included in a valid sidelink resource pool that precedes the CG resource in the time domain, is closest to the CG resource, and is not reserved for use by another device. The terminal may transmit PSCCH / PSSCH / PSFCH through said resource.

[0150] According to one embodiment of the present disclosure, where there is no need to strictly satisfy the PDB or where delay requirements related to data transmission are not high, if a CG resource indicated in physical slot units via RRC or sidelink DCI is not included in the sidelink resource pool, the terminal may use a resource included in the sidelink resource pool that precedes the CG resource in the time domain and is closest to the CG resource. Or, for example, the terminal may use a resource included in a valid sidelink resource pool that precedes the CG resource in the time domain, is closest to the CG resource, and is not reserved for use by another device. The terminal may transmit PSCCH / PSSCH / PSFCH through said resource.

[0151] In this case, for example, if the resources allocated by the CG consist of multiple resources, the location of the sidelink slot closest in time may differ for each resource indicated by the transmission period of the CG. In such a case, the terminal can map the resource set allocated by the CG to the sidelink slot closest in time. For example, when the terminal uses the resource set allocated by the CG for sidelink communication, the resource set may not be divided and may be mapped to a resource associated with a single sidelink resource pool. For example, if there is a resource among the resource set allocated by the CG that is closest in time to the sidelink slot, the resource set allocated by the CG may be mapped to a resource associated with the sidelink resource pool containing the sidelink slot. For example, if there is one or more resources among the resource set allocated by the CG that are closest in time to the sidelink slot, the resource set allocated by the CG may be mapped to a resource associated with the sidelink resource pool that precedes in time. For example, if there is one or more resources among the set of resources allocated to the CG that are temporally closest to the side link slot, the set of resources allocated to the CG may be mapped to resources associated with the temporally subsequent side link resource pool. For example, if the set of resources allocated to the CG is mapped to the temporally closest side link slot, each resource constituting the set of resources allocated to the CG may be mapped to the temporally closest side link slot.

[0152] Meanwhile, the present disclosure describes a method in which, in sidelink mode-1 operation, a base station efficiently signals a timing offset for a PUCCH resource for reporting HARQ feedback of a transmitting terminal via DCI.

[0153] For example, when a transmitting terminal transmits data through a CG resource or a DG resource, it may report HARQ feedback to the base station. Specifically, for example, the transmitting terminal may transmit one or more TBs through a set of CG resources or a set of DG resources. The transmitting terminal may receive one or more HARQ feedbacks related to one or more TBs from a receiving terminal via PSFCH. For example, the transmitting terminal may transmit a TB through the last resource of a set of CG resources or a set of DG resources. The transmitting terminal may receive HARQ feedback related to the TB from a receiving terminal via PSFCH. Subsequently, the transmitting terminal may transmit the HARQ feedback report to the base station by using a pre-configured PUCCH resource via DCI from the base station. For example, if the base station receives a report related to a HARQ NACK from the transmitting terminal, the base station may allocate a DG resource to the transmitting terminal for additional retransmission.

[0154] At this time, for example, the base station may signal a timing offset for a PUCCH resource to the terminal via the DCI. Here, the reference for the timing offset may be any one of the following: the DCI, the PSCCH / PSSCH transmitting the associated TB, the PSFCH transmitted by the receiving terminal to the transmitting terminal for a transmission using the last resource of the CG resource set, or the PSFCH transmitted by the receiving terminal to the transmitting terminal for a transmission using the last resource of the DG resource set. Here, for example, the PUCCH timing offset indicated by the DCI may be a value in physical time or physical slot units from the DCI, PSCCH / PSSCH, or PSFCH. Alternatively, for example, since the PSCCH / PSSCH or PSFCH is included in the sidelink resource pool, which is a logical slot area, the base station may signal the timing offset value indicated by the DCI to the terminal as a value in logical slot units, and the terminal may transmit a HARQ feedback report to the base station via the Uu link resource that is temporally closest to the time when the timing offset indicated by the DCI was applied. Alternatively, for example, the base station may signal the timing offset value specified by the DCI to the terminal as a value in logical slot units, and the terminal may transmit a HARQ feedback report to the base station via the temporally nearest Uu link resource after the time when the timing offset specified by the DCI was applied. Alternatively, for example, the base station may signal the timing offset value specified by the DCI to the terminal as a value in logical slot units, and the terminal may transmit a HARQ feedback report to the base station via the temporally nearest Uu link resource before the time when the timing offset specified by the DCI was applied.

[0155] According to various embodiments of the present disclosure, a base station can efficiently transmit a timing offset for a PUCCH resource to which a transmitting terminal transmits a HARQ feedback report to the base station via DCI.

[0156] FIG. 14 illustrates a procedure in which a transmitting terminal performs sidelink communication with a receiving terminal based on CG resources allocated from a base station, according to one embodiment of the present disclosure. FIG. 14 may be combined with various embodiments of the present disclosure.

[0157] Referring to FIG. 14, in step S1410, the transmitting terminal may receive information related to a CG resource from a base station. For example, the information related to the CG resource may include information related to the period of the CG resource, information related to the time domain of the CG resource, information related to the frequency domain of the CG resource, and information related to the time offset of the CG resource.

[0158] In step S1420, the transmitting terminal can perform sidelink communication with the receiving terminal through the CG resource based on information related to the CG resource. For example, the first CG resource may be allocated after a time offset of the CG resource from a first point in time. For example, the second CG resource may be allocated after a period of the CG resource from the first CG resource. For example, the period of the CG resource may be a unit of a logical slot. For example, the first point in time may have a system frame number (SFN) value of 0. For example, the logical slot may be a slot containing only slots related to the sidelink. For example, the time offset may be applied based on a unit of a physical slot. For example, the physical slot may include a slot related to the uplink, a slot related to the downlink, and a slot related to the sidelink. For example, the first CG resource may be a sidelink-related resource located at the earliest point in time after the time offset from the first point in time. For example, the size of the second CG resource may be determined based on information related to the time domain of the CG resource and information related to the frequency domain of the CG resource. For example, TDRA information may include information related to the time domain of the CG resource and information related to the frequency domain of the CG resource.

[0159] FIG. 15 illustrates a procedure according to one embodiment of the present disclosure in which a transmitting terminal determines a virtual CG resource and performs sidelink communication with a receiving terminal based on a CG resource allocated from a base station. FIG. 15 may be combined with various embodiments of the present disclosure.

[0160] Referring to FIG. 15, in step S1510, the transmitting terminal may receive information related to a CG resource from a base station. For example, the information related to the CG resource may include information related to the period of the CG resource, information related to the time domain of the CG resource, information related to the frequency domain of the CG resource, and information related to the time offset of the CG resource.

[0161] In step S1520, the transmitting terminal may determine a virtual CG resource based on information related to the CG resource. For example, a virtual first CG resource may be determined after a time offset from SFN O. For example, the time offset may be applied based on units of physical slots. For example, the size of the virtual first CG resource may be determined based on information related to the time domain of the CG resource and information related to the frequency domain of the CG resource. For example, a virtual second CG resource may be determined after a period of the CG resource from the virtual first CG resource. For example, the period of the CG resource applied to the virtual second CG resource may be units of physical slots.

[0162] In step S1530, the transmitting terminal can perform sidelink communication with the receiving terminal through the CG resource based on information related to the CG resource.

[0163] For example, the first point in time may be the point in time when information related to the CG resource is verified. For example, based on the determination of a virtual first CG resource, the first CG resource may be a resource related to a sidelink located at the earliest point in time from the point in time when information related to the CG resource is verified. For example, the second CG resource may be allocated from the first CG resource after the period of the CG resource. For example, the period of the CG resource may be a unit of a logical slot. For example, a logical slot may be a slot containing only slots related to a sidelink. For example, the size of the second CG resource may be determined based on information related to the time domain of the CG resource and information related to the frequency domain of the CG resource.

[0164] FIG. 16 illustrates a method, according to one embodiment of the present disclosure, in which a first device performs sidelink communication with a second device based on information related to a CG resource. The embodiment of FIG. 16 may be combined with various embodiments of the present disclosure.

[0165] Referring to FIG. 16, in step S1610, the first device (100) may receive information related to a CG resource from a base station. For example, the information related to the CG resource may include information related to the period of the CG resource, information related to the time domain of the CG resource, information related to the frequency domain of the CG resource, and information related to the time offset of the CG resource.

[0166] In step S1620, the first device (100) can perform sidelink communication with the second device (200) through the CG resource based on information related to the CG resource. For example, the first CG resource may be allocated after a time offset of the CG resource from a first point in time. For example, the second CG resource may be allocated after a period of the CG resource from the first CG resource. For example, the period of the CG resource may be a unit of a logical slot. For example, the first point in time may have a system frame number (SFN) value of 0. For example, the logical slot may be a slot containing only slots related to the sidelink. For example, the time offset may be applied based on a unit of a physical slot. For example, the physical slot may include a slot related to the uplink, a slot related to the downlink, and a slot related to the sidelink. For example, the first CG resource may be a resource related to the sidelink located at the earliest point in time after the time offset from the first point in time. For example, the size of the second CG resource may be determined based on information related to the time domain of the CG resource and information related to the frequency domain of the CG resource. For example, TDRA information may include information related to the time domain of the CG resource and information related to the frequency domain of the CG resource.

[0167] For example, the first device (100) may determine a virtual CG resource based on information related to the CG resource. For example, a virtual first CG resource may be determined after a time offset from SFN O. For example, the time offset may be applied based on units of physical slots. For example, the size of the virtual first CG resource may be determined based on information related to the time domain of the CG resource and information related to the frequency domain of the CG resource. For example, a virtual second CG resource may be determined after a period of the CG resource from the virtual first CG resource. For example, the period of the CG resource applied to the virtual second CG resource may be units of physical slots. Here, for example, the first time point may be the time point at which information related to the CG resource is checked. For example, based on the determination of the virtual first CG resource, the first CG resource may be a resource related to a side link located at the earliest time point from the time point at which information related to the CG resource is checked. For example, a second CG resource may be allocated from a first CG resource after the period of the CG resource. For example, the period of the CG resource may be a unit of a logical slot. For example, the size of the second CG resource may be determined based on information related to the time domain of the CG resource and information related to the frequency domain of the CG resource.

[0168] The above-described embodiment may be applied to various devices described below. For example, the processor (102) of the first device (100) may control the transceiver (106) to receive information related to CG resources from a base station. In addition, the processor (102) of the first device (100) may control the transceiver (106) so that the first device (100) performs side-link communication with the second device (200) through the CG resources based on the information related to CG resources.

[0169] 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 one or more memories for storing instructions; one or more transceivers; and one or more processors connecting the one or more memories and the one or more transceivers. For example, the one or more processors may execute the instructions to receive information related to a configured grant (CG) resource from a base station and perform a sidelink transmission to a second device based on the information related to the CG resource. For example, the information related to the CG resource may include information related to the period of the CG resource, information related to the time domain of the CG resource, information related to the frequency domain of the CG resource, and information related to the time offset of the CG resource. For example, a first CG resource may be allocated after the time offset of the CG resource from a first point in time. For example, a second CG resource may be allocated after the period of the CG resource from the first CG resource. For example, the cycle of the above CG resource may be in units of logical slots.

[0170] According to one embodiment of the present disclosure, an apparatus configured to control a first terminal may be provided. For example, it may include one or more processors; and one or more memories executablely connected to the one or more processors and storing instructions. For example, the one or more processors may execute the instructions to receive information related to a configured grant (CG) resource from a base station and perform a sidelink transmission to a second terminal based on the information related to the CG resource. For example, the information related to the CG resource may include information related to the period of the CG resource, information related to the time domain of the CG resource, information related to the frequency domain of the CG resource, and information related to the time offset of the CG resource. For example, a first CG resource may be allocated after the time offset of the CG resource from a first point in time. For example, a second CG resource may be allocated after the period of the CG resource from the first CG resource. For example, the cycle of the above CG resource may be in units of logical slots.

[0171] According to one embodiment of the present disclosure, a non-transient computer-readable storage medium recording commands may be provided. For example, when executed, the commands may cause a first device to receive information related to a configured grant (CG) resource from a base station and, based on the information related to the CG resource, to perform a sidelink transmission to a second device. For example, the information related to the CG resource may include information related to the period of the CG resource, information related to the time domain of the CG resource, information related to the frequency domain of the CG resource, and information related to the time offset of the CG resource. For example, a first CG resource may be allocated after a time offset of the CG resource from a first point in time. For example, a second CG resource may be allocated after the period of the CG resource from the first CG resource. For example, the period of the CG resource may be a unit of a logical slot.

[0172] FIG. 17 illustrates a method, according to one embodiment of the present disclosure, in which a second device performs sidelink communication with a first device based on information related to a CG resource. The embodiment of FIG. 17 may be combined with various embodiments of the present disclosure.

[0173] Referring to FIG. 17, in step S1710, the second device (200) can perform sidelink communication with the first device based on information related to the CG resource. For example, information related to the CG resource may be received by the first device (100) from a base station. For example, information related to the CG resource may include information related to the period of the CG resource, information related to the time domain of the CG resource, information related to the frequency domain of the CG resource, and information related to the time offset of the CG resource.

[0174] For example, the first CG resource may be allocated after a time offset of the CG resource from the first time point. For example, the second CG resource may be allocated after a period of the CG resource from the first CG resource. For example, the period of the CG resource may be a unit of a logical slot. For example, the first time point may have a system frame number (SFN) value of 0. For example, a logical slot may be a slot that includes only slots related to a side link. For example, the time offset may be applied based on a unit of a physical slot. For example, a physical slot may include slots related to an uplink, slots related to a downlink, and slots related to a side link. For example, the first CG resource may be a resource related to a side link located at the earliest time point after the time offset from the first time point. For example, the size of the second CG resource may be determined based on information related to the time domain of the CG resource and information related to the frequency domain of the CG resource. For example, TDRA information may include information related to the time domain of the CG resource and information related to the frequency domain of the CG resource.

[0175] For example, a virtual CG resource may be determined by the first device (100) based on information related to the CG resource. For example, a virtual first CG resource may be determined after a time offset from SFN O. For example, the time offset may be applied based on units of physical slots. For example, the size of the virtual first CG resource may be determined based on information related to the time domain of the CG resource and information related to the frequency domain of the CG resource. For example, a virtual second CG resource may be determined after a period of the CG resource from the virtual first CG resource. For example, the period of the CG resource applied to the virtual second CG resource may be units of physical slots. Here, for example, the first time point may be the time point at which information related to the CG resource is checked. For example, based on the determination of the virtual first CG resource, the first CG resource may be a resource related to a side link located at the earliest time point from the time point at which information related to the CG resource is checked. For example, a second CG resource may be allocated from a first CG resource after the period of the CG resource. For example, the period of the CG resource may be a unit of a logical slot. For example, the size of the second CG resource may be determined based on information related to the time domain of the CG resource and information related to the frequency domain of the CG resource.

[0176] The above-described embodiment may be applied to various devices described below. For example, the processor (202) of the second device (200) may control the transceiver (206) to perform side-link communication with the first device based on information related to the configured grant (CG).

[0177] According to one embodiment of the present disclosure, a second device for performing wireless communication may be provided. For example, the second device may include one or more memories for storing instructions; one or more transceivers; and one or more processors connecting the one or more memories and the one or more transceivers. For example, the one or more processors may execute the instructions to perform sidelink communication with the first device based on information related to a configured grant (CG). For example, information related to the CG resource may be received from a base station to the first device. For example, the information related to the CG resource may include information related to the period of the CG resource, information related to the time domain of the CG resource, information related to the frequency domain of the CG resource, and information related to the time offset of the CG resource. For example, the first CG resource may be allocated after the time offset of the CG resource from a first point in time. For example, the second CG resource may be allocated after the period of the CG resource from the first CG resource. For example, the cycle of the above CG resource may be in units of logical slots.

[0178] The following describes an apparatus to which various embodiments of the present disclosure may be applied.

[0179] Although not limited to this, the various descriptions, functions, procedures, proposals, methods, and / or flowcharts of operation disclosed in this document may be applied to various fields requiring wireless communication / connection (e.g., 5G) between devices.

[0180] Examples are provided in more detail below with reference to the drawings. In the following drawings and descriptions, the same reference numerals may represent the same or corresponding hardware blocks, software blocks, or function blocks unless otherwise described.

[0181] FIG. 18 shows a communication system (1) according to one embodiment of the present disclosure.

[0182] Referring to FIG. 18, 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 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 Thing) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with wireless communication capabilities, an autonomous vehicle, a vehicle capable of performing inter-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone). XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices and can be implemented in the form of HMDs (Head-Mounted Devices), HUDs (Head-Up Displays) equipped in vehicles, televisions, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, robots, etc. Portable devices may include smartphones, smartpads, wearable devices (e.g., smartwatches, smart glasses), computers (e.g., laptops, etc.). Home appliances may include TVs, refrigerators, washing machines, etc. IoT devices may include sensors, smart meters, etc. For example, base stations and networks may be implemented as wireless devices, and a specific wireless device (200a) may operate as a base station / network node to other wireless devices.

[0183] Here, the wireless communication technology implemented in the wireless device of this specification may include LTE, NR, and 6G, as well as Narrowband Internet of Things for low-power communication. For example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology and may be implemented according to standards such as LTE Cat NB1 and / or LTE Cat NB2, but is not limited to the names mentioned above. Additionally, or generally, the wireless communication technology implemented in the wireless device of this specification may perform communication based on LTE-M technology. For example, LTE-M technology may be an example of LPWAN technology and may be referred to by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology may be implemented in 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 names mentioned above. Additionally or generally, wireless communication technology implemented in the wireless device of this specification may include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) for low-power communication, and is not limited to the names mentioned above. As an example, ZigBee technology can create personal area networks (PANs) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and may be referred to by various names.

[0184] Wireless devices (100a to 100f) can be connected to a network (300) through a base station (200). Artificial Intelligence (AI) technology may be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) through the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. The wireless devices (100a to 100f) may communicate with each other through the base station (200) / network (300), but they may 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). Also, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0185] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base station (200) and base station (200) / base station (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 inter-base station communication (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 / from each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, based on various proposals of the present disclosure, at least some of the following may be performed: 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.), resource allocation processes, etc.

[0186] FIG. 19 shows a wireless device according to one embodiment of the present disclosure.

[0187] Referring to FIG. 19, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR). Here, {the first wireless device (100), the second wireless device (200)} may correspond to {wireless device (100x), base station (200)} and / or {wireless device (100x), wireless device (100x)} of FIG. 18.

[0188] The first wireless device (100) includes one or more processors (102) and one or more memories (104), and may additionally include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memory (104) and / or transceivers (106) and may be configured to implement the descriptions, functions, procedures, proposals, methods and / or sequences of operation disclosed in this document. For example, the processor (102) may process information within the memory (104) to generate a first information / signal and then transmit a wireless signal containing the first information / signal through the transceiver (106). Additionally, the processor (102) may receive a wireless signal containing a second information / signal through the transceiver (106) and then store information obtained from the 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 store software code containing instructions for performing some or all of the processes controlled by the processor (102) or for performing the descriptions, functions, procedures, proposals, methods, and / or operation sequence diagrams disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement 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 through one or more antennas (108). The transceiver (106) may include a transmitter and / or receiver. The transceiver (106) may be combined with an RF (Radio Frequency) unit. In the present disclosure, a wireless device may refer to a communication modem / circuit / chip.

[0189] The second wireless device (200) includes one or more processors (202) and one or more memories (204), and may additionally include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memory (204) and / or transceivers (206) and may be configured to implement the descriptions, functions, procedures, proposals, methods and / or sequences of operation disclosed in this document. For example, the processor (202) may process information within the memory (204) to generate a third information / signal and then transmit a wireless signal containing the third information / signal through the transceiver (206). Additionally, the processor (202) may receive a wireless signal containing a fourth information / signal through the transceiver (206) and then store information obtained from the signal processing of the fourth information / signal in the memory (204). Memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, memory (204) may store software code containing instructions for performing some or all of the processes controlled by the processor (202) or for performing the descriptions, functions, procedures, proposals, methods, and / or flowcharts of operation disclosed in this document. Here, the processor (202) and memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). A transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals through one or more antennas (208). The transceiver (206) may include a transmitter and / or receiver. The transceiver (206) may be interchangeable with an RF unit. In this disclosure, a wireless device may refer to a communication modem / circuit / chip.

[0190] Hereinafter, 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 Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or flowcharts of operation 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 flowcharts of operation disclosed in this document. One or more processors (102, 202) may generate a signal (e.g., baseband signal) containing a PDU, SDU, message, control information, data, or information according to the functions, procedures, proposals, and / or methods disclosed in this document and provide it to one or more transceivers (106, 206). One or more processors (102, 202) may receive a signal (e.g., baseband signal) from one or more transceivers (106, 206) and may obtain a PDU, SDU, message, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or flowcharts disclosed in this document.

[0191] One or more processors (102, 202) may be referred to as a controller, microcontroller, microprocessor, or 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 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. Firmware or software configured to perform the descriptions, functions, procedures, proposals, methods, and / or operation sequences disclosed in this document may be contained in one or more processors (102, 202) or stored in one or more memories (104, 204) and driven by one or more processors (102, 202). The descriptions, functions, procedures, proposals, methods, and / or operation sequences disclosed in this document may be implemented using firmware or software in the form of code, instructions, and / or sets of instructions.

[0192] One or more memories (104, 204) may be connected to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memories (104, 204) may be composed of ROM, RAM, EPROM, flash memory, hard drive, registers, cache memory, computer read storage media, and / or combinations thereof. One or more memories (104, 204) may be located inside and / or outside of one or more processors (102, 202). Additionally, one or more memories (104, 204) may be connected to one or more processors (102, 202) through various technologies such as wired or wireless connections.

[0193] One or more transceivers (106, 206) may transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or operation flowcharts, etc., of this document to one or more other devices. One or more transceivers (106, 206) may receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or operation flowcharts, etc., disclosed in this document from one or more other devices. For example, one or more transceivers (106, 206) may be connected to one or more processors (102, 202) and may transmit and receive wireless signals. For example, one or more processors (102, 202) may 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 connected 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, etc., as described in the descriptions, functions, procedures, proposals, methods, and / or flowcharts of operation disclosed in this document through 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 the received wireless signal / channel, etc. from an RF band signal to a baseband signal in order to process the received user data, control information, wireless signal / channel, etc. using one or more processors (102, 202).One or more transceivers (106, 206) can convert user data, control information, wireless signals / channels, etc. processed using one or more processors (102, 202) from baseband signals to RF band signals. To this end, one or more transceivers (106, 206) may include (analog) oscillators and / or filters.

[0194] FIG. 20 shows a signal processing circuit for a transmission signal according to one embodiment of the present disclosure.

[0195] Referring to FIG. 20, 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 operation / function of FIG. 20 may be performed in the processor (102, 202) and / or transceiver (106, 206) of FIG. 19. The hardware elements of FIG. 20 may be implemented in the processor (102, 202) and / or transceiver (106, 206) of FIG. 19. For example, blocks 1010 through 1060 may be implemented in the processor (102, 202) of FIG. 19. Additionally, blocks 1010 to 1050 may be implemented in the processor (102, 202) of FIG. 19, and block 1060 may be implemented in the transceiver (106, 206) of FIG. 19.

[0196] The codeword can be converted into a wireless signal through the signal processing circuit (1000) of FIG. 20. Here, the codeword is an encoded bit sequence of an information block. The information block may include a transmission block (e.g., UL-SCH transmission block, DL-SCH transmission block). The wireless signal can be transmitted through various physical channels (e.g., PUSCH, PDSCH).

[0197] Specifically, a codeword can be converted into a scrambled bit sequence by a scrambler (1010). The scrambled sequence used for scrambling is generated based on an initialization value, which may include ID information of a 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 an N*M precoding matrix W. 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 the complex modulation symbols. Additionally, the precoder (1040) can perform precoding without performing transform precoding.

[0198] A resource mapper (1050) can map the modulation symbols of each antenna port to a time-frequency resource. The time-frequency resource may include multiple symbols (e.g., CP-OFDMA symbols, DFT-s-OFDMA symbols) in the time domain and multiple subcarriers in the frequency domain. A signal generator (1060) generates a radio signal from the mapped modulation symbols, and the generated radio signal can be transmitted to another device through each antenna. To this end, the signal generator (1060) may include an Inverse Fast Fourier Transform (IFFT) module, a Cyclic Prefix (CP) inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0199] The signal processing process for a received signal in a wireless device can be configured as the inverse of the signal processing process (1010–1060) of FIG. 20. For example, a wireless device (e.g., 100, 200 in FIG. 19) can receive a wireless signal from the outside through an antenna port / transceiver. The received wireless signal can be converted into a baseband signal through a signal restorer. To this end, the signal restorer may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a Fast Fourier Transform (FFT) module. Subsequently, the baseband signal can be restored into a codeword through a resource de-mapper process, a postcoding process, a demodulation process, and a de-scrambling process. The codeword can be restored to the original information block 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.

[0200] FIG. 21 shows a wireless device according to one embodiment of the present disclosure. The wireless device may be implemented in various forms depending on the use-example / service (see FIG. 18).

[0201] Referring to FIG. 21, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 19 and may be composed of various elements, components, units / parts, 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 additional elements (140). The communication unit may include a communication circuit (112) and 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. 19. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 19. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and additional elements (140) and controls the general operation of the wireless device. For example, the control unit (120) may control the electrical / mechanical operation of the wireless device based on a program / code / command / information stored in the memory unit (130). Additionally, the control unit (120) may transmit information stored in the memory unit (130) to an external (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external (e.g., another communication device) via a wireless / wired interface through the communication unit (110) in the memory unit (130).

[0202] The additional element (140) can be configured in various ways depending on the type of 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. 18, 100a), a vehicle (Fig. 18, 100b-1, 100b-2), an XR device (Fig. 18, 100c), a portable device (Fig. 18, 100d), a home appliance (Fig. 18, 100e), an IoT device (Fig. 18, 100f), a digital broadcasting terminal, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or financial device), a security device, a climate / environment device, an AI server / device (Fig. 18, 400), a base station (Fig. 18, 200), a network node, etc. Wireless devices can be used in a movable or fixed location depending on the use—e.g., service.

[0203] In FIG. 21, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be entirely interconnected via a wired interface, or at least a portion 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). Additionally, each element, component, unit / part, and / or module within the wireless device (100, 200) may include one or more additional elements. For example, the control unit (120) may be composed of one or more sets of processors. 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 RAM (Random Access Memory), DRAM (Dynamic RAM), ROM (Read Only Memory), flash memory, volatile memory, non-volatile memory and / or a combination thereof.

[0204] Hereinafter, an implementation example of FIG. 21 will be described in more detail with reference to the drawings.

[0205] FIG. 22 shows a portable device according to one embodiment of the present disclosure. The portable device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch, smart glasses), a portable computer (e.g., a laptop, etc.). The portable device may be referred to as MS (Mobile Station), UT (user terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), AMS (Advanced Mobile Station), or WT (Wireless terminal).

[0206] Referring to FIG. 22, 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 part of the communication unit (110). Blocks 110 to 130 / 140a to 140c each correspond to blocks 110 to 130 / 140 of FIG. 21.

[0207] 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 the components of the portable device (100) to perform various operations. The control unit (120) may include an AP (Application Processor). The memory unit (130) can store data / parameters / programs / code / commands required for the operation of the portable device (100). Additionally, the memory unit (130) can store input / output data / information, etc. The power supply unit (140a) supplies power to the portable device (100) and may include wired / wireless charging circuits, batteries, etc. The interface unit (140b) can support the connection between the portable device (100) and other external devices. The interface unit (140b) may include various ports (e.g., audio input / output ports, video input / output ports) for connection with external devices. The input / output unit (140c) can receive or output video information / signals, audio information / signals, data, and / or information input by 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, etc.

[0208] For example, in the case of data communication, the input / output unit (140c) acquires information / signals (e.g., touch, text, voice, image, video) input from the user, and the acquired 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 another wireless device or to a base station. Additionally, the communication unit (110) can receive wireless signals from another wireless device or base station and then restore the received wireless signals to their 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).

[0209] FIG. 23 shows a vehicle or an autonomous vehicle according to one embodiment of the present disclosure. The vehicle or autonomous vehicle may be implemented as a mobile robot, a vehicle, a train, an aerial vehicle (AV), a ship, etc.

[0210] Referring to FIG. 23, 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 part of the communication unit (110). Blocks 110 / 130 / 140a to 140d correspond to blocks 110 / 130 / 140 of FIG. 21, respectively.

[0211] 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, roadside base stations (Roadside units), etc.), and servers. The control unit (120) can perform various operations by controlling elements of the vehicle or autonomous vehicle (100). The control unit (120) may include an Electronic Control Unit (ECU). The driving unit (140a) can drive the vehicle or autonomous vehicle (100) on the ground. The driving unit (140a) may include an engine, motor, power train, wheels, brakes, steering device, etc. The power supply unit (140b) supplies power to the vehicle or autonomous vehicle (100) and may include wired / wireless charging circuits, batteries, 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 inclination sensor, a weight detection sensor, a heading sensor, a position module, a vehicle forward / reverse 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 technologies such as maintaining the driving lane, technologies for automatically adjusting speed such as adaptive cruise control, technologies for automatically driving along a predetermined path, and technologies for automatically setting a path and driving when a destination is set.

[0212] 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 path and a driving plan based on the acquired data. The control unit (120) can control the drive unit (140a) so that the vehicle or the autonomous vehicle (100) moves along the autonomous driving path according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit (110) can acquire the latest traffic information data from an external server non-periodically and can acquire surrounding traffic information data from surrounding vehicles. Additionally, 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 path and the driving plan based on the newly acquired data / information. The communication unit (110) can transmit information regarding the vehicle location, autonomous driving path, driving plan, etc. to an external server. An external server can predict traffic information data in advance using AI technology, etc., based on information collected from vehicles or autonomous vehicles, and can provide the predicted traffic information data to vehicles or autonomous vehicles.

[0213] The claims described in this specification may be combined in various ways. For example, the technical features of the method claims in this specification may be combined to be implemented as a device, and the technical features of the device claims in this specification may be combined to be implemented as a method. Furthermore, the technical features of the method claims and the technical features of the device claims in this specification may be combined to be implemented as a device, and the technical features of the method claims and the technical features of the device claims in this specification may be combined to be implemented as a method.

Claims

Claim 1 A method comprising: a step in which a first device receives configuration information from a base station, the configuration information including information related to a first period of a sidelink (SL) CG (configured grant) and information related to a time offset of the SL CG; and a step in which the first device performs SL communication based on a plurality of SL CGs; wherein the slot of the Nth SL CG following the first SL CG among the plurality of SL CGs is a logical slot that occurs sequentially based on (i) information related to a reference system frame number (SFN), (ii) information related to the time offset, and (iii) information related to a second period obtained based on information related to the first period. Claim 2 In claim 1, the method is different from the information related to the first period and the information related to the second period. Claim 3 delete Claim 4 A method according to claim 1, wherein information related to the first cycle is based on physical time units, and information related to the second cycle is based on logical slot units. Claim 5 In claim 4, the method wherein the physical time unit is a millisecond. Claim 6 In claim 1, the logical slot is a slot belonging to the SL resource pool. Claim 7 A method according to claim 1, wherein the logical slot is a slot belonging to the SL resource pool, excluding a slot among a plurality of physical slots that does not belong to the SL resource pool. Claim 8 A method according to claim 1, wherein the setting information is received from the base station through a radio resource control (RRC) message. Claim 9 delete Claim 10 A method according to claim 1, wherein the reference SFN is 0 based on the fact that the setting information does not include information related to the reference SFN. Claim 11 A method according to claim 1, wherein information related to the time resource location of the SL CG is included in the setting information. Claim 12 delete Claim 13 A method according to claim 11, wherein a time interval for PSCCH (physical sidelink control channel) transmission and a time interval for PSSCH (physical sidelink shared channel) transmission are determined based on information related to the time offset and information related to the time resource location. Claim 14 A first device comprises: one or more processors; one or more transceivers; and one or more memories that store instructions for performing operations and connect the one or more processors and the one or more transceivers, wherein the operations include: receiving configuration information from a base station, the configuration information including information related to a first period of a sidelink (SL) CG (configured grant) and information related to a time offset of the SL CG; and performing SL communication based on a plurality of SL CGs; wherein the slot of the Nth SL CG following the first SL CG among the plurality of SL CGs is a logical slot that occurs sequentially based on (i) information related to a reference system frame number (SFN), (ii) information related to the time offset, and (iii) information related to a second period obtained based on information related to the first period. Claim 15 A processing apparatus configured to control a first device comprises: one or more processors; and one or more memories executablely connected to the one or more processors and storing instructions for performing operations, wherein the operations include: receiving configuration information from a base station including information related to a first period of a sidelink (SL) configured grant (CG) and information related to a time offset of the SL CG; and performing SL communication based on a plurality of SL CGs; wherein the slot of the Nth SL CG following the first SL CG among the plurality of SL CGs is a logical slot that occurs sequentially based on (i) information related to a reference system frame number (SFN), (ii) information related to the time offset, and (iii) information related to a second period obtained based on information related to the first period. Claim 16 delete Claim 17 delete Claim 18 delete Claim 19 delete Claim 20 delete

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