Method and apparatus for sending HARQ feedback to a base station in NR V2X

Abstract

A method for performing wireless communication with a first device and a device supporting the method are provided. The method includes the following steps: receiving information related to a physical uplink control channel (PUCCH) resource and information related to M side link (SL) time slots from a base station; performing N physical side link shared channel (PSSCH) transmissions based on N SL time slots among the M SL time slots; determining a physical side link feedback channel (PSFCH) time slot related to the PSSCH transmission; receiving information about K SL hybrid automatic repeat request feedbacks on the one PSFCH time slot in response to the N PSSCH transmissions; and sending information about L HARQ feedbacks to the base station based on the PUCCH resources, wherein the one PSFCH time slot is associated with L SL time slots, M, N, K and L are positive integers, L can be greater than or equal to M, M can be greater than or equal to N, and N can be greater than or equal to K.

Description

Technical Field

[0001] The present disclosure relates to wireless communication systems. Background Art

[0002] Sidelink (SL) communication is a communication scheme in which a direct link is established between user equipments (UEs) and the UEs directly exchange voice and data with each other without intervention of an evolved Node B (eNB). SL communication is being considered as a solution to eNB overhead caused by the rapid growth of data traffic.

[0003] V2X (Vehicle to Everything) refers to the communication technology used by vehicles to exchange information with other vehicles, pedestrians, and objects equipped with infrastructure. V2X can be divided into four types such as V2V (Vehicle to Vehicle), V2I (Vehicle to Infrastructure), V2N (Vehicle to Network), and V2P (Vehicle to Pedestrian). V2X communication can be provided through the PC5 interface and / or the Uu interface.

[0004] In addition, as more and more communication devices require larger communication capacity, mobile broadband communication enhanced relative to traditional radio access technology (RAT) is required. Therefore, the design of communication systems taking into account UEs or services that are sensitive to reliability and latency has also been discussed, and the next generation radio access technology taking into account enhanced mobile broadband communication, massive MTC, and ultra-reliable low-latency communication (URLLC) can be referred to as a new RAT (radio access technology) or NR (new radio).

[0005] Figure 1 is a diagram for describing NR-based V2X communication compared with V2X communication based on a RAT used before NR. Figure 1 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0006] Regarding V2X communication, when discussing the RAT used before NR, the focus is on the scheme of providing safety services based on V2X messages such as BSM (Basic Safety Message), CAM (Cooperative Awareness Message) and DENM (Decentralized Environment Notification Message). V2X messages may include location information, dynamic information, attribute information, etc. For example, a UE may send a periodic message type CAM and / or an event-triggered message type DENM to another UE.

[0007] For example, CAM may include dynamic state information of the vehicle such as direction and speed, static data of the vehicle such as size, and basic vehicle information such as external lighting status, route details, etc. For example, UE may broadcast CAM, and the latency of CAM may be less than 100ms. For example, UE may generate DENM and send it to another UE in an unexpected situation such as vehicle failure, accident, etc. For example, all vehicles within the transmission range of UE can receive CAM and / or DENM. In this case, DENM may have a higher priority than CAM.

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

[0009] For example, based on vehicle platooning, vehicles can move together by dynamically forming groups. For example, in order to perform platooning operations based on vehicle formation, vehicles belonging to the group can receive periodic data from the leading vehicle. For example, vehicles belonging to the group can reduce or increase the interval between vehicles by using the periodic data.

[0010] For example, based on advanced driving, the vehicles can be semi-autonomous or fully autonomous. For example, each vehicle can adjust trajectory or maneuver based on data obtained from local sensors of nearby vehicles and / or nearby logical entities. In addition, for example, each vehicle can share driving intentions with nearby vehicles.

[0011] For example, based on the extended sensors, raw data, processed data or real-time video data obtained by local sensors can be exchanged between the vehicle, the logical entity, the pedestrian UE and / or the V2X application server, so that, for example, the vehicle can recognize a further improved environment compared to the environment detected using its own sensors.

[0012] For example, based on remote driving, for a person or remote vehicle that cannot drive in a dangerous environment, a remote driver or V2X application can operate or control the remote vehicle. For example, if the route is predictable (such as public transportation), cloud computing-based driving can be used for the operation or control of the remote vehicle. In addition, for example, access to a cloud-based backend service platform can be considered for remote driving.

[0013] In addition, schemes for specifying service requirements for various V2X scenarios such as vehicle platooning, advanced driving, extended sensors, remote driving, etc. are discussed in NR-based V2X communications. Summary of the invention

[0014] Technical issues

[0015] In addition, if the MODE 1TX UE does not send PSSCH and / or PSCCH to the RX UE, there may be ambiguity about what information the MODE 1TX UE should report to the base station via the (pre-configured) PUCCH resources. In the following, in order to solve the above problem, a method for determining information sent to the base station via the PUCCH resources by the MODE 1TX UE and a device supporting the method are proposed.

[0016] Technical Solution

[0017] In one embodiment, a method for performing wireless communication by a first device is provided. The method may include the following steps: receiving information related to a physical uplink control channel (PUCCH) resource and information related to M side link (SL) time slots from a base station; performing N physical side link shared channel (PSSCH) transmissions based on N SL time slots among the M SL time slots; determining a physical side link feedback channel (PSFCH) time slot related to the N PSSCH transmissions; receiving information about K SL hybrid automatic repeat request (HARQ) feedbacks on the one PSFCH time slot in response to the N PSSCH transmissions; and sending information about L HARQ feedbacks to the base station based on the PUCCH resources, wherein the one PSFCH time slot is related to the L SL time slots, and wherein M, N, K and L are positive integers, and L is greater than or equal to M, and M is greater than or equal to N, and N is greater than or equal to K.

[0018] In one embodiment, a first device configured to perform wireless communication is provided. The first device may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, the one or more processors may execute the instructions to perform the following operations: receive information related to physical uplink control channel (PUCCH) resources and information related to M side link (SL) time slots from a base station; perform N physical side link shared channel (PSSCH) transmissions based on N SL time slots among the M SL time slots; determine a physical side link feedback channel (PSFCH) time slot related to the N PSSCH transmissions; receive information about K SL hybrid automatic repeat request (HARQ) feedbacks on the one PSFCH time slot in response to the N PSSCH transmissions; and send information about L HARQ feedbacks to the base station based on the PUCCH resources, wherein the one PSFCH time slot is related to L SL time slots, and wherein M, N, K and L are positive integers, and L is greater than or equal to M, and M is greater than or equal to N, and N is greater than or equal to K.

[0019] Beneficial Effects

[0020] User equipment (UE) can efficiently perform SL communication BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a diagram for describing NR-based V2X communication compared with V2X communication based on a RAT used before NR.

[0022] Figure 2 The structure of the NR system according to an embodiment of the present disclosure is shown.

[0023] Figure 3 The functional division between NG-RAN and 5GC according to an embodiment of the present disclosure is shown.

[0024] Figure 4 A radio protocol architecture according to an embodiment of the present disclosure is shown.

[0025] Figure 5 The structure of the NR system according to an embodiment of the present disclosure is shown.

[0026] Figure 6 The structure of the time slot of the NR frame according to an embodiment of the present disclosure is shown.

[0027] Figure 7 An example of a BWP according to an embodiment of the present disclosure is shown.

[0028] Figure 8 A radio protocol architecture for SL communication according to an embodiment of the present disclosure is shown.

[0029] Fig. 9 A UE performing V2X or SL communication according to an embodiment of the present disclosure is shown.

[0030] Fig.10 A process of performing V2X or SL communication by a UE based on a transmission mode according to an embodiment of the present disclosure is shown.

[0031] Fig.11 Three playback types according to an embodiment of the present disclosure are shown.

[0032] Fig.12 The diagram shows a process in which a MODE 1TX UE reports information about SL HARQ feedback to a base station according to an embodiment of the present disclosure.

[0033] Fig.13 The diagram shows a process in which a MODE 1TX UE reports information about SL HARQ feedback to a base station according to an embodiment of the present disclosure.

[0034] Fig.14 A method for a first device to report SL HARQ feedback to a base station based on an embodiment of the present disclosure is shown.

[0035] Fig.15 A method for a base station to receive SL HARQ feedback from a first device based on an embodiment of the present disclosure is shown.

[0036] Fig.16 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown.

[0037] Fig.17 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown.

[0038] Fig.18 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown.

[0039] Fig.19 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown.

[0040] Fig. 20 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown.

[0041] Fig.21 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown.

[0042] Fig. 22 A communication system 1 according to an embodiment of the present disclosure is shown.

[0043] Fig.23 A wireless device according to an embodiment of the present disclosure is shown.

[0044] Fig.24 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown.

[0045] Fig.25 A wireless device according to an embodiment of the present disclosure is shown.

[0046] Fig.26 A handheld device according to an embodiment of the present disclosure is shown.

[0047] Fig. 27 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0048] In this specification, "A or B" may mean "only A", "only B", or "both A and B". In other words, 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, C".

[0049] A slash ( / ) or a comma used in this specification may mean "and / or". For example, "A / B" may mean "A and / or B". Thus, "A / B" may mean "only A", "only B", or "both A and B". For example, "A, B, C" may mean "A, B, or C".

[0050] In the present specification, "at least one of A and B" may mean "only A", "only B", or "both A and B". In addition, in the present specification, the expression "at least one of A or B" or "at least one of A and / or B" may be interpreted as "at least one of A and B".

[0051] In addition, in the present 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". In addition, "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".

[0052] In addition, brackets used in this specification may mean "for example". Specifically, when indicated as "control information (PDCCH)", this may mean that "PDCCH" is proposed as an example of "control information". In other words, the "control information" of this specification is not limited to "PDCCH", and "PDDCH" may be proposed as an example of "control information". Specifically, when indicated as "control information (ie, PDCCH)", this may also mean that "PDCCH" is proposed as an example of "control information".

[0053] The technical features described in each of the drawings in this specification may be implemented separately or simultaneously.

[0054] The techniques described below can be used in various wireless communication systems such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. CDMA can be implemented using radio technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA-2000. TDMA can be implemented using radio technologies such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA can be implemented using radio technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Evolved UTRA (E-UTRA), etc. IEEE 802.16m is an evolved version of IEEE 802.16e and provides backward compatibility for systems based on IEEE 802.16e. UTRA is part of Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is a part of Evolved UMTS (E-UMTS) using E-UTRA. 3GPP LTE uses OFDMA in the downlink and SC-FDMA in the uplink. LTE-Advanced (LTE-A) is an evolution of LTE.

[0055] 5G NR is a subsequent technology of LTE-A corresponding to a new mobile communication system with high performance, low latency, high availability, etc. 5G NR can use all available spectrum resources including low frequency bands less than 1 GHz, intermediate frequency bands from 1 GHz to 10 GHz, and high frequency (millimeter wave) above 24 GHz.

[0056] For the sake of clarity, the following description will mainly focus on LTE-A or 5G NR. However, the technical features of the embodiments of the present disclosure will not be limited thereto.

[0057] Figure 2 The structure of the NR system according to an embodiment of the present disclosure is shown. Figure 2 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0058] Reference Figure 2 , the next generation radio access network (NG-RAN) may include a BS 20 that provides user plane and control plane protocol terminations to the UE 10. For example, the BS 20 may include a next generation Node B (gNB) and / or an evolved Node B (eNB). For example, the UE 10 may be fixed or mobile and may be referred to as other terms such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), a wireless device, etc. For example, the BS may be referred to as a fixed station that communicates with the UE 10 and may be referred to as other terms such as a base transceiver system (BTS), an access point (AP), etc.

[0059] Figure 2 The embodiment of the present invention illustrates a case where only gNB is included. BS20 may be connected to each other via an Xn interface. BS20 may be connected to each other via a fifth generation (5G) core network (5GC) and an NG interface. More specifically, BS20 may be connected to an access and mobility management function (AMF) 30 via an NG-C interface, and may be connected to a user plane function (UPF) 30 via an NG-U interface.

[0060] Figure 3 The functional division between NG-RAN and 5GC according to an embodiment of the present disclosure is shown.

[0061] Reference Figure 3 , gNB can provide functions such as inter-cell radio resource management (inter-cell RRM), radio bearer (RB) control, connection mobility control, radio admission control, measurement configuration and provision, dynamic resource allocation, etc. AMF can provide functions such as non-access stratum (NAS) security, idle state mobility processing, etc. UPF can provide functions such as mobility anchoring, protocol data unit (PDU) processing, etc. Session management function (SMF) can provide functions such as user equipment (UE) Internet protocol (IP) address allocation, PDU session control, etc.

[0062] The radio interface protocol layer between the UE and the network can be classified into the first layer (L1), the second layer (L2), and the third layer (L3) based on the lower three layers of the open system interconnection (OSI) model known in the communication system. Here, the physical (PHY) layer belonging to the first layer provides an information transmission service using a physical channel, and the radio resource control (RRC) layer located at the third layer controls radio resources between the UE and the network. To this end, the RRC layer exchanges RRC messages between the UE and the BS layer.

[0063] Figure 4 A radio protocol architecture according to an embodiment of the present disclosure is shown. Figure 4 The embodiments of can be combined with various embodiments of the present disclosure. Specifically, Figure 4 (a) shows the radio protocol architecture for the user plane, and Figure 4 (b) in FIG. 4 shows a radio protocol architecture for a control plane. The user plane corresponds to a protocol stack for user data transmission, and the control plane corresponds to a protocol stack for control signal transmission.

[0064] Reference Figure 4 , the physical layer provides information transfer services to the upper layer through the physical channel. The physical layer is connected to the medium access control (MAC) layer, which is the upper layer of the physical layer, through the transport channel. Data is transferred between the MAC layer and the physical layer through the transport channel. The transport channel is classified according to how the data is transmitted through the radio interface and what characteristics of the data it transmits.

[0065] Data is transmitted through a physical channel between different PHY layers (ie, a PHY layer of a transmitter and a PHY layer of a receiver). The physical channel may be modulated using an Orthogonal Frequency Division Multiplexing (OFDM) scheme, and uses time and frequency as radio resources.

[0066] The MAC layer provides services to the Radio Link Control (RLC) layer via logical channels, and the RLC layer is a higher layer of the MAC layer. The MAC layer provides a function of mapping multiple logical channels to multiple transport channels. The MAC layer also provides a function of logical channel multiplexing by mapping multiple logical channels to a single transport channel. The MAC layer provides data transmission services through logical channels.

[0067] The RLC layer performs concatenation, segmentation, and reassembly of Radio Link Control Service Data Units (RLC SDUs). In order to ensure different Quality of Service (QoS) required by Radio Bearers (RBs), the RLC layer provides three types of operation modes, namely, Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). AM RLC provides error correction through Automatic Repeat Request (ARQ).

[0068] The Radio Resource Control (RRC) layer is defined only in the control plane. And, the RRC layer performs the function of controlling physical channels, transport channels, and logical channels related to configuration, reconfiguration, and release of radio bearers. RB refers to a logical path provided by the first layer (i.e., the PHY layer) and the second layer (i.e., the MAC layer, the RLC layer, and the PDCP layer) to transmit data between the UE and the network.

[0069] The functions of the Packet Data Convergence Protocol (PDCP) in the user plane include transmission, header compression and encryption of user data. The functions of the Packet Data Convergence Protocol (PDCP) in the control plane include transmission and encryption / integrity protection of control plane data.

[0070] The Service Data Adaptation Protocol (SDAP) layer is defined only in the user plane. The SDAP layer performs mapping between Quality of Service (QoS) flows and Data Radio Bearers (DRBs) and QoS Flow ID (QFI) marking in both DL and UL packets.

[0071] Configuration of RB refers to the process for specifying radio protocol layers and channel attributes to provide a specific service and for determining corresponding detailed parameters and operation methods. RB can then be classified into two types, namely, signaling radio bearer (SRB) and data radio bearer (DRB). SRB is used as a path for sending RRC messages in the control plane, and DRB is used as a path for sending user data in the user plane.

[0072] When the RRC connection is established between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in the RRC connected (RRC_CONNECTED) state, otherwise the UE can be in the RRC idle (RRC_IDLE) state. In the case of NR, the RRC inactive (RRC_INACTIVE) state is additionally defined, and the UE in the RRC_INACTIVE state can maintain the connection with the core network and release its connection with the BS.

[0073] The downlink transmission channels for sending (or transmitting) data from the network to the UE include a broadcast channel (BCH) for sending system information and a downlink shared channel (SCH) for sending other user services or control messages. The services or control messages of downlink multicast or broadcast services can be sent via the downlink SCH or can be sent via a separate downlink multicast channel (MCH). In addition, the uplink transmission channels for sending (or transmitting) data from the UE to the network include a random access channel (RACH) for sending initial control messages and an uplink shared channel (SCH) for sending other user services or control messages.

[0074] Examples of logical channels belonging to a higher layer of a transport channel and mapped to a transport channel may include a broadcast control channel (BCCH), a paging control channel (PCCH), a common control channel (CCCH), a multicast control channel (MCCH), a multicast traffic channel (MTCH), etc.

[0075] The physical channel is configured by multiple OFDM symbols in the time domain and multiple subcarriers in the frequency domain. A subframe is configured by multiple OFDM symbols in the time domain. A resource block is configured by multiple subcarriers and multiple OFDM symbols in a resource allocation unit. In addition, each subframe can use a specific subcarrier of a specific OFDM symbol (e.g., the first OFDM symbol) of the corresponding subframe of the physical downlink control channel (PDCCH), i.e., the L1 / L2 control channel. The transmission time interval (TTI) refers to the unit time of subframe transmission.

[0076] Figure 5 The structure of the NR system according to an embodiment of the present disclosure is shown. Figure 5 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0077] Reference Figure 5 In NR, a radio frame can be used to perform uplink and downlink transmissions. The length of a radio frame is 10ms and can be defined as consisting of two half frames (HF). A half frame can include five 1ms subframes (SF). A subframe (SF) can be divided into one or more time slots, and the number of time slots within a subframe can be determined according to the subcarrier spacing (SCS). Each time slot can include 12 or 14 OFDM (A) symbols depending on the cyclic prefix (CP).

[0078] When a normal CP is used, each time slot may include 14 symbols. When an extended CP is used, each time slot may include 12 symbols. Herein, a symbol may include an OFDM symbol (or a CP-OFDM symbol) and a single carrier-FDMA (SC-FDMA) symbol (or a discrete Fourier transform spread OFDM (DFT-s-OFDM) symbol).

[0079] Table 1 below shows the number of time slots (N) of each symbol according to the SCS setting (μ) when the normal CP is used. slot symb ), the number of time slots per frame (N frame,μ slot ) and the number of time slots per subframe (N subframe,μ slot ).

[0080] [Table 1]

[0081] <![CDATA[SCS(15*2 μ )]]> <![CDATA[N slot symb ]]> <![CDATA[N frame,μ slot ]]> <![CDATA[N subframe,μ slot ]]> 15KHz(μ=0) 14 10 1 30KHz(μ=1) 14 20 2 60KHz(μ=2) 14 40 4 120KHz(μ=3) 14 80 8 240KHz(μ=4) 14 160 16

[0082] Table 2 shows an example of the number of symbols per slot, the number of slots per frame, and the number of slots per subframe according to the SCS in the case of using the extended CP.

[0083] [Table 2]

[0084] <![CDATA[SCS(15*2 μ )]]> <![CDATA[N slot symb ]]> <![CDATA[N frame,μ slot ]]> <![CDATA[N subframe,μ slot <!-- 6 -->]]> 60KHz(μ=2) 12 40 4

[0085] In the NR system, OFDM (A) parameter sets (e.g., SCS, CP length, etc.) between multiple cells integrated into one UE may be configured differently. Therefore, the (absolute time) duration (or interval) of a time resource (e.g., a subframe, a time slot, or a TTI) (collectively referred to as a time unit (TU) for simplicity) consisting of the same number of symbols may be configured differently in the integrated cells.

[0086] In NR, multiple parameter sets or SCSs can be supported to support various 5G services. For example, with an SCS of 15kHz, a wide range of traditional cellular bands can be supported, and with an SCS of 30kHz / 60kHz, dense cities, lower latency, and wider carrier bandwidths can be supported. With an SCS of 60kHz or higher, bandwidths greater than 24.25GHz can be used to overcome phase noise.

[0087] The NR frequency band may be defined as two different types of frequency ranges. The two different types of frequency ranges may be FR1 and FR2. The values ​​of the frequency ranges may be changed (or varied), for example, the two different types of frequency ranges may be as shown in Table 3 below. Among the frequency ranges used in the NR system, FR1 may mean "a range below 6 GHz", and FR2 may mean "a range above 6 GHz", and may also be referred to as millimeter wave (mmW).

[0088] [Table 3]

[0089] Frequency range specification Corresponding frequency range Subcarrier Spacing (SCS) FR1 450MHz–6000MHz 15, 30, 60kHz FR2 24250MHz–52600MHz 60, 120, 240kHz

[0090] As described above, the value of the frequency range in the NR system may be changed (or varied). For example, as shown in Table 4 below, FR1 may include a bandwidth in the range of 410 MHz to 7125 MHz. More specifically, FR1 may include frequency bands of 6 GHz (or 5850, 5900, 5925 MHz, etc.) and higher. For example, the frequency bands of 6 GHz (or 5850, 5900, 5925 MHz, etc.) and higher included in FR1 may include unlicensed frequency bands. Unlicensed frequency bands may be used for various purposes, for example, unlicensed frequency bands are used for vehicle-specific communications (e.g., autonomous driving).

[0091] [Table 4]

[0092] Frequency range specification Corresponding frequency range Subcarrier Spacing (SCS) FR1 410MHz–7125MHz 15, 30, 60kHz FR2 24250MHz–52600MHz 60, 120, 240kHz

[0093] Figure 6 The structure of the time slot of the NR frame according to an embodiment of the present disclosure is shown.

[0094] Reference Figure 6 , a time slot includes multiple symbols in the time domain. For example, in the case of normal CP, one time slot may include 14 symbols. For example, in the case of extended CP, one time slot may include 12 symbols. Alternatively, in the case of normal CP, one time slot may include 7 symbols. However, in the case of extended CP, one time slot may include 6 symbols.

[0095] A carrier includes multiple subcarriers in the frequency domain. A resource block (RB) can be defined as multiple consecutive subcarriers in the frequency domain (e.g., 12 subcarriers). A bandwidth part (BWP) can be defined as multiple consecutive (physical) resource blocks ((P)RBs) in the frequency domain, and a BWP can correspond to a parameter set (e.g., SCS, CP length, etc.). A carrier can include up to N BWPs (e.g., 5 BWPs). Data communication can be performed via an activated BWP. Each element can be referred to as a resource element (RE) in a resource grid, and a complex symbol can be mapped to each element.

[0096] In addition, the radio interface between a UE and another UE or the radio interface between a UE and a network may include an L1 layer, an L2 layer, and an L3 layer. In various embodiments of the present disclosure, the L1 layer may refer to a physical layer. In addition, for example, the L2 layer may refer to at least one of a MAC layer, an RLC layer, a PDCP layer, and an SDAP layer. In addition, for example, the L3 layer may refer to an RRC layer.

[0097] Hereinafter, the bandwidth part (BWP) and the carrier will be described in detail.

[0098] A BWP may be a contiguous set of physical resource blocks (PRBs) within a given parameter set. A PRB may be selected from a contiguous set of common resource blocks (CRBs) for a given parameter set on a given carrier.

[0099] When bandwidth adaptation (BA) is used, the reception bandwidth and transmission bandwidth of the user equipment (UE) are not required to be as wide (or large) as the bandwidth of the cell, and the reception bandwidth and transmission bandwidth of the UE can be controlled (or adjusted). For example, the UE can receive information / configuration for bandwidth control (or adjustment) from the network / base station. In this case, bandwidth control (or adjustment) can be performed based on the received information / configuration. For example, bandwidth control (or adjustment) can include a reduction / expansion of bandwidth, a change in the position of bandwidth, or a change in the subcarrier spacing of bandwidth.

[0100] For example, the bandwidth can be reduced during a duration with little activity in order to save power. For example, the location of the bandwidth can be relocated (or moved) from the frequency domain. For example, the location of the bandwidth can be relocated (or moved) from the frequency domain to enhance scheduling flexibility. For example, the subcarrier spacing of the bandwidth can be changed. For example, the subcarrier spacing of the bandwidth can be changed to allow different services. A subset of the total cell bandwidth of a cell can be referred to as a bandwidth part (BWP). BA can be performed when the base station / network configures a BWP for the UE and when the base station / network notifies the UE of the BWP that is currently activated among the BWPs.

[0101] For example, the BWP may be at least any one of an active BWP, an initial BWP, and / or a default BWP. For example, the UE may not monitor the downlink radio link quality in a DL BWP other than an activated DL BWP on a primary cell (PCell). For example, the UE may not receive a PDCCH, a physical downlink shared channel (PDSCH), or a channel state information-reference signal (CSI-RS) (excluding RRM) other than an activated DL BWP. For example, the UE may not trigger a channel state information (CSI) report for an unactivated DL BWP. For example, the UE may not send a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) other than an activated UL BWP. For example, in the case of a downlink, the initial BWP may be given as a set of contiguous RBs for a remaining minimum system information (RMSI) control resource set (CORESET) (configured by a physical broadcast channel (PBCH)). For example, in the case of an uplink, the initial BWP may be given by a system information block (SIB) for a random access procedure. For example, a default BWP may be configured by a higher layer. For example, the initial value of the default BWP may be the initial DL BWP.To save energy, if the UE cannot detect downlink control information (DCI) during a specified period, the UE may switch the active BWP of the UE to the default BWP.

[0102] In addition, a BWP can be defined for SL. The same SL BWP can be used for transmission and reception. For example, a transmitting UE can send a SL channel or a SL signal within a specific BWP, and a receiving UE can receive a SL channel or a SL signal within the same specific BWP. In a licensed carrier, the SL BWP can be defined separately from the Uu BWP, and the SL BWP can have configuration signaling separate from the UuBWP. For example, the UE can receive a configuration for the SL BWP from the base station / network. The SL BWP can be configured (in advance) for out-of-coverage NR V2X UEs and RRC_IDLE UEs. For UEs operating in RRC_CONNECTED mode, at least one SL BWP can be activated within the carrier.

[0103] Figure 7 An example of a BWP according to an embodiment of the present disclosure is shown. Figure 7 The embodiments of can be combined with various embodiments of the present disclosure. Figure 7 In an implementation manner, the number of BWPs is 3.

[0104] Reference Figure 7 , a common resource block (CRB) may be a carrier resource block numbered from one end of a carrier frequency band to the other end thereof. Additionally, a PRB may be a resource block numbered within each BWP. Point A may indicate a common reference point of a resource block grid.

[0105] It can be obtained by point A, the offset relative to point A (N start BWP ) and bandwidth (N size BWP ) to configure the BWP. For example, point A can be an external reference point of the PRBs of the carrier, and subcarrier 0 of all parameter sets (e.g., all parameter sets supported by the network on the corresponding carrier) are aligned in point A. For example, the offset can be the PRB distance between the lowest subcarrier within a given parameter set and point A. For example, the bandwidth can be the number of PRBs within a given parameter set.

[0106] Hereinafter, V2X or SL communication will be described.

[0107] Figure 8 A radio protocol architecture for SL communication according to an embodiment of the present disclosure is shown. Figure 8 The embodiments of can be combined with various embodiments of the present disclosure. More specifically, Figure 8 (a) in FIG. 1 shows a user plane protocol stack, and Figure 8 (b) in FIG. 5 shows the control plane protocol stack.

[0108] Next, the side link synchronization signal (SLSS) and the synchronization information will be described in detail.

[0109] The SLSS may include a primary side link synchronization signal (PSSS) and a secondary side link synchronization signal (SSSS) as SL specific sequences. The PSSS may be referred to as a side link primary synchronization signal (S-PSS), and the SSSS may be referred to as a side link secondary synchronization signal (S-SSS). For example, an M sequence of length 127 may be used for the S-PSS, and a Gold sequence of length 127 may be used for the S-SSS. For example, the UE may use the S-PSS for initial signal detection and synchronization acquisition. For example, the UE may use the S-PSS and the S-SSS for acquiring detailed synchronization and for detecting a synchronization signal ID.

[0110] The physical sidelink broadcast channel (PSBCH) can be a (broadcast) channel for sending default (system) information, which the UE must first know before SL signal transmission / reception. For example, the default information can be information related to SLSS, duplex mode (DM), time division duplex (TDD) uplink / downlink (UL / DL) configuration, information related to resource pool, type of application related to SLSS, subframe offset, broadcast information, etc. For example, in order to evaluate PSBCH performance, in NR V2X, the payload size of PSBCH can be 56 bits, including a 24-bit cyclic redundancy check (CRC).

[0111] S-PSS, S-SSS, and PSBCH may be included in a block format that supports periodic transmission (e.g., SL synchronization signal (SS) / PSBCH block, hereinafter, sidelink synchronization signal block (S-SSB)). The S-SSB may have the same parameter set (i.e., SCS and CP length) as the physical sidelink control channel (PSCCH) / physical sidelink shared channel (PSSCH) in the carrier, and the transmission bandwidth may exist within a (pre-) configured sidelink (SL) BWP. For example, the S-SSB may have a bandwidth of 11 resource blocks (SBs). For example, the PSBCH may exist across 11 RBs. In addition, the frequency position of the S-SSB may be (pre-) configured. Therefore, the UE does not have to perform hypothesis detection at the frequency to discover the S-SSB in the carrier.

[0112] Fig. 9 A UE performing V2X or SL communication according to an embodiment of the present disclosure is shown. Fig. 9 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0113] Reference Fig. 9In V2X or SL communication, the term "UE" may generally refer to a user's UE. However, if a network device such as a BS transmits / receives a signal according to a communication scheme between UEs, the BS may also be regarded as a type of UE. For example, UE 1 may be a first device 100, and UE 2 may be a second device 200.

[0114] For example, UE 1 may select a resource unit corresponding to a specific resource in a resource pool meaning a set of resource series. In addition, UE 1 may send an SL signal by using the resource unit. For example, a resource pool in which UE 1 can send a signal may be configured to UE 2 as a receiving UE, and a signal of UE 1 may be detected in the resource pool.

[0115] Herein, if UE 1 is within the connection range of the BS, the BS may inform the resource pool to UE 1. Otherwise, if UE 1 is out of the connection range of the BS, another UE may inform UE 1 of the resource pool, or UE 1 may use a pre-configured resource pool.

[0116] Generally, a resource pool may be configured in units of multiple resources, and each UE may select one or more units of resources to use in its SL signaling.

[0117] Hereinafter, resource allocation in SL will be described.

[0118] Fig.10 A process of performing V2X or SL communication by a UE based on a transmission mode according to an embodiment of the present disclosure is shown. Fig.10 The embodiments of the present disclosure 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 ease of explanation, in LTE, the transmission mode may be referred to as an LTE transmission mode. In NR, the transmission mode may be referred to as an NR resource allocation mode.

[0119] For example, Fig.10 (a) in FIG. 1 shows UE operations related to LTE transmission mode 1 or LTE transmission mode 3. Alternatively, for example, Fig.10 (a) in FIG. 1 shows UE operations related to NR resource allocation mode 1. For example, LTE transmission mode 1 may be applied to conventional SL communication, and LTE transmission mode 3 may be applied to V2X communication.

[0120] For example, Fig.10 (b) in FIG. 4 shows UE operations related to LTE transmission mode 2 or LTE transmission mode 4. Alternatively, for example, Fig.10 (b) in FIG. 1 shows UE operation related to NR resource allocation mode 2.

[0121] Reference Fig.10 In (a), in LTE transmission mode 1, LTE transmission mode 3, or NR resource allocation mode 1, the BS may schedule SL resources to be used by the UE for SL transmission. For example, the BS may perform resource scheduling for UE 1 through PDCCH (more specifically, downlink control information (DCI)), and UE 1 may perform V2X or SL communication for UE 2 according to the resource scheduling. For example, UE 1 may send sidelink control information (SCI) to UE 2 through a physical sidelink control channel (PSCCH), and thereafter send data based on the SCI to UE 2 through a physical sidelink shared channel (PSSCH).

[0122] Reference Fig.10 In (b), in LTE transmission mode 2, LTE transmission mode 4 or NR resource allocation mode 2, the UE can determine the SL transmission resources within the SL resources configured by the BS / network or the pre-configured SL resources. For example, the configured SL resources or the pre-configured SL resources can be a resource pool. For example, the UE can autonomously select or schedule resources for SL transmission. For example, the UE can perform SL communication by autonomously selecting resources in the configured resource pool. For example, the UE can autonomously select resources within the selection window by performing sensing and resource (re)selection processes. For example, sensing can be performed in units of subchannels. In addition, UE 1 that has autonomously selected resources in the resource pool can send SCI to UE 2 via PSCCH, and thereafter data based on the SCI can be sent to UE 2 via PSSCH.

[0123] Fig.11 Three playback types according to embodiments of the present disclosure are shown. Fig.11 The embodiments of can be combined with various embodiments of the present disclosure. Specifically, Fig.11 (a) shows broadcast type SL communication, Fig.11 (b) in FIG. 4 shows unicast type SL communication, and Fig.11 (c) shows multicast SL communication. In the case of unicast SL communication, the UE can perform one-to-one communication with another UE. In the case of multicast SL transmission, the UE can perform SL communication with one or more UEs in the group to which the UE belongs. In various embodiments of the present disclosure, SL groupcast communication can be replaced by SL multicast communication, SL one-to-many communication, etc.

[0124] Hereinafter, a hybrid automatic repeat request (HARQ) process will be described.

[0125] An error compensation scheme is used to ensure communication reliability. Examples of error compensation schemes may include a forward error correction (FEC) scheme and an automatic repeat request (ARQ) scheme. In the FEC scheme, errors in the receiving end can be corrected by appending an additional error correction code to the information bit. The FEC scheme has the advantages of small time delay and no additional information exchange between the transmitting end and the receiving end, but at the same time has the disadvantage of decreased system efficiency in a good channel environment. The ARQ scheme has the advantage of being able to improve transmission reliability, but at the same time has the disadvantage of time delay and decreased system efficiency in a bad channel environment.

[0126] A hybrid automatic repeat request (HARQ) scheme is a combination of an FEC scheme and an ARQ scheme. In the HARQ scheme, it is determined whether an unrecoverable error is included in data received by a physical layer, and retransmission is requested after the error is detected, thereby improving performance.

[0127] In the case of SL unicast and SL multicast, HARQ feedback and HARQ combining in the physical layer can be supported. For example, in the case where the receiving UE operates in resource allocation mode 1 or 2, the receiving UE can receive PSSCH from the transmitting UE, and the receiving UE can send HARQ feedback corresponding to PSSCH to the transmitting UE using the sidelink feedback control information (SFCI) format through the physical sidelink feedback channel (PSFCH).

[0128] For example, SL HARQ feedback may be enabled for unicast. In this case, in a non-code block group (non-CBG), the receiving UE may decode the PSCCH targeted to the receiving UE, and when the receiving UE successfully decodes the transport block associated with the PSCCH, the receiving UE may generate a HARQ-ACK. Thereafter, the receiving UE may send the HARQ-ACK to the transmitting UE. Conversely, after the receiving UE decodes the PSCCH targeted to the receiving UE, if the receiving UE fails to successfully decode the transport block associated with the PSCCH, the receiving UE may generate a HARQ-NACK, and the receiving UE may send the HARQ-NACK to the transmitting UE.

[0129] For example, SL HARQ feedback may be enabled for multicast.For example, during non-CBG, two different types of HARQ feedback options may be supported for multicast.

[0130] (1) Multicast Option 1: After decoding the PSCCH targeted at the receiving UE, if the receiving UE fails to decode the transport block associated with the PSCCH, the receiving UE may send a HARQ-NACK to the transmitting UE via the PSFCH. Conversely, when the receiving UE decodes the PSCCH targeted at the receiving UE and when the receiving UE successfully decodes the transport block associated with the PSCCH, the receiving UE does not send a HARQ-ACK to the transmitting UE.

[0131] (2) Multicast Option 2: After decoding the PSCCH targeted at the receiving UE, if the receiving UE fails to decode the transport block associated with the PSCCH, the receiving UE may send a HARQ-NACK to the transmitting UE via the PSFCH. Also, when the receiving UE decodes the PSCCH targeted at the receiving UE and when the receiving UE successfully decodes the transport block associated with the PSCCH, the receiving UE may send a HARQ-ACK to the transmitting UE via the PSFCH.

[0132] For example, if multicast option 1 is used in SL HARQ feedback, all UEs performing multicast communication can share PSFCH resources. For example, UEs belonging to the same group can send HARQ feedback by using the same PSFCH resources.

[0133] For example, if multicast option 2 is used in SL HARQ feedback, each UE performing multicast communication may use different PSFCH resources for HARQ feedback transmission. For example, UEs belonging to the same group may send HARQ feedback by using different PSFCH resources.

[0134] For example, when SL HARQ feedback is enabled for multicast, the receiving UE may determine whether to send HARQ feedback to the transmitting UE based on transmit-receive (TX-RX) distance and / or reference signal received power (RSRP).

[0135] For example, in multicast option 1, in the case of HARQ feedback based on TX-RX distance, if the TX-RX distance is less than or equal to the communication range requirement, the receiving UE may send HARQ feedback in response to the PSSCH to the sending UE. Otherwise, if the TX-RX distance is greater than the communication range requirement, the receiving UE may not send HARQ feedback in response to the PSSCH to the sending UE. For example, the sending UE may inform the receiving UE of the location of the sending UE through the SCI associated with the PSSCH. For example, the SCI associated with the PSSCH may be a second SCI. For example, the receiving UE may estimate or obtain the TX-RX distance based on the location of the receiving UE and the location of the sending UE. For example, the receiving UE may decode the SCI associated with the PSSCH, and therefore may know the communication range requirement for the PSSCH.

[0136] For example, in the case of resource allocation mode 1, the time (offset) between PSFCH and PSSCH can be configured or pre-configured. In the case of unicast and multicast, if retransmission is required on the SL, it can be indicated to the BS by the UE within the coverage area using PUCCH. The sending UE can send an indication to the serving BS of the sending UE in the form of a scheduling request (SR) / buffer status report (BSR) instead of a HARQ ACK / NACK. In addition, even if the BS does not receive the indication, the BS can schedule SL retransmission resources for the UE. For example, in the case of resource allocation mode 2, the time (offset) between PSFCH and PSSCH can be configured or pre-configured.

[0137] For example, from the perspective of UE transmission in a carrier, for a PSFCH format for SL in a time slot, TDM between PSCCH / PSSCH and PSFCH may be allowed. For example, a sequence-based PSFCH format with a single symbol may be supported. Herein, the single symbol may not be the AGC duration. For example, a sequence-based PSFCH format may be applied to unicast and multicast.

[0138] For example, in a time slot associated with a resource pool, the PSFCH resource may be periodically configured for N time slot durations, or may be preconfigured. For example, N may be configured as one or more values ​​greater than or equal to 1. For example, N may be 1, 2, or 4. For example, HARQ feedback for transmissions in a specific resource pool may be sent via PSFCH only on the specific resource pool.

[0139] For example, if the transmitting UE sends a PSSCH to the receiving UE across time slot #x to time slot #n, the receiving UE may send HARQ feedback in response to the PSSCH to the transmitting UE in time slot #(N+A). For example, time slot #(N+A) may include PSFCH resources. Herein, for example, A may be a minimum integer greater than or equal to K. For example, K may be the number of logical time slots. In this case, K may be the number of time slots in a resource pool. Alternatively, for example, K may be the number of physical time slots. In this case, K may be the number of time slots inside or outside the resource pool.

[0140] For example, if the receiving UE sends HARQ feedback on the PSFCH resource in response to a PSSCH sent by the sending UE to the receiving UE, the receiving UE can determine the frequency domain and / or code domain of the PSFCH resource based on the implicit mechanism in the configured resource pool. For example, the receiving UE can determine the frequency domain and / or code domain of the PSFCH resource based on at least one of the time slot index related to the PSCCH / PSSCH / PSFCH, the subchannel related to the PSCCH / PSSCH, or the identifier of each receiving UE in the group for identifying the HARQ feedback based on multicast option 2. Additionally / alternatively, for example, the receiving UE can determine the frequency domain and / or code domain of the PSFCH resource based on at least one of the SL RSRP, SINR, L1 source ID and / or location information.

[0141] For example, if HARQ feedback transmission via the UE's PSFCH overlaps with HARQ feedback reception via the PSFCH, the UE may select either HARQ feedback transmission via the PSFCH or HARQ feedback reception via the PSFCH based on a priority rule. For example, the priority rule may be based at least on a priority indication of the associated PSCCH / PSSCH.

[0142] For example, if HARQ feedback transmissions by UEs via PSFCH overlap for multiple UEs, the UEs may select a specific HARQ feedback transmission based on a priority rule. For example, the priority rule may be based on the lowest priority indication of the related PSCCH / PSSCH.

[0143] In addition, in the present disclosure, for example, a transmitting UE (TX UE) may be a UE that transmits data to a (target) receiving UE (RX UE). For example, the TX UE may be a UE that performs PSCCH transmission and / or PSSCH transmission. For example, the TX UE may be a UE that sends a SL CSI-RS and / or a SL CSI report request indicator to a (target) RX UE. For example, the TX UE may be a UE that sends a (predefined) reference signal (e.g., a PSSCH demodulation reference signal (DM-RS)) and / or a SL (L1) RSRP report request indicator to a (target) RX UE for SL (L1) RSRP measurement. For example, the TX UE may be a UE that sends a (control) channel (e.g., PSCCH, PSSCH, etc.) and / or a reference signal on a (control) channel (e.g., DM-RS, CSI-RS, etc.) for SL RLM operation and / or SL RFL operation of the (target) RX UE.

[0144] In addition, in the present disclosure, for example, a receiving UE (RX UE) may be a UE that sends SL HARQ feedback to a transmitting UE (TX UE) based on whether decoding of data received from the TX UE is successful and / or detection / decoding of a PSCCH (related to PSSCH scheduling) sent by the TX UE is successful. For example, the RX UE may be a UE that performs SL CSI transmission to the TX UE based on the SL CSI-RS and / or SL CSI report request indicator received from the TX UE. For example, the RX UE is a UE that sends to the TX UE a SL (L1) RSRP measurement value measured based on the SL (L1) RSRP report request indicator and / or a (predefined) reference signal received from the TX UE. For example, the RX UE may be a UE that sends data of the RX UE to the TX UE. For example, the RX UE may be a UE that performs SL RLM operation and / or SL RLF operation based on a (preconfigured) (control) channel and / or a reference signal on a (control) channel received from the TX UE.

[0145] In addition, in the present disclosure, for example, the TX UE may send at least one of the following information to the RX UE through the SCI. Herein, for example, the TX UE may send at least one of the following information to the RX UE through the first SCI and / or the second SCI.

[0146] -PSSCH (and / or PSCCH) related resource allocation information (e.g., location / number of time / frequency resources, resource reservation information (e.g., time period))

[0147] -SL CSI report request indicator or SL (L1) RSRP (and / or SL (L1) RSRQ and / or SL (L1) RSSI) report request indicator

[0148] -SL CSI transmission indicator (or SL (L1) RSRP (and / or SL (L1) RSRQ and / or SL (L1) RSSI) information transmission indicator) (on PSSCH)

[0149] - Modulation and Coding Scheme (MCS) information

[0150] -TX power information

[0151] - L1 destination ID information and / or L1 source ID information

[0152] -SL HARQ process ID information

[0153] -New Data Indicator (NDI) information

[0154] - Redundancy Version (RV) information

[0155] -QoS information (for example, priority information) (related to the transmission service / packet)

[0156] - Information on the number of antenna ports used for (transmitting) SL CSI-RS or SL CSI-RS transmission indicator

[0157] - The location (or distance range) information of the target RX UE (for which SL HARQ feedback is requested) or the TX UE location information

[0158] - Reference signal (e.g., DM-RS, etc.) information related to decoding (and / or channel estimation) of data sent through PSSCH. For example, information related to the pattern of (time-frequency) mapping resources of DM-RS, rank information, antenna port index information, etc.

[0159] In addition, in the present disclosure, for example, the PSCCH may be replaced / replaced by the SCI and / or the first SCI and / or the second SCI, and vice versa. For example, the SCI may be replaced / replaced by the PSCCH and / or the first SCI and / or the second SCI, and vice versa. For example, since the TX UE may send the second SCI to the RX UE via the PSSCH, the PSSCH may be replaced / replaced by the second SCI, and vice versa. For example, if the SCI configuration field is divided into two groups in consideration of the (relatively) high SCI payload size, the first SCI including the first SCI configuration field group may be referred to as the first SCI or the first-level SCI, and the second SCI including the second SCI configuration field group may be referred to as the second SCI or the second-level SCI. For example, the first SCI may be sent via the PSCCH. For example, the second SCI may be sent via the (independent) PSCCH. For example, the second SCI may be carried and sent together with the data via the PSSCH.

[0160] In addition, in the present disclosure, for example, the term "configured / configured" or the term "defined / defined" may refer to (pre-) configuration (for each resource pool) from a base station or a network (through predefined signaling (e.g., SIB, MAC, RRC, etc.). For example, "A is configured to" may mean "the base station / network sends information related to A to the UE".

[0161] In addition, in the present disclosure, for example, an RB may be replaced / replaced by a subcarrier, and vice versa. For example, a packet or service may be replaced / replaced by a transport block (TB) or a medium access control protocol data unit (MAC PDU) based on a transmission layer, and vice versa. For example, a code block group (CBG) may be replaced / replaced by a TB, and vice versa. For example, a source ID may be replaced / replaced by a destination ID, and vice versa. For example, an L1 ID may be replaced / replaced by an L2 ID, and vice versa. For example, an L1 ID may be an L1 source ID or an L1 destination ID. For example, an L2 ID may be an L2 source ID or an L2 destination ID.

[0162] In addition, in the present disclosure, for example, the operation of the sending UE reserving / selecting / determining retransmission resources may include: the sending UE reserving / selecting / determining potential retransmission resources whose actual use will be determined based on the SL HARQ feedback information received from the receiving UE.

[0163] In addition, in the present disclosure, SL MODE 1 may refer to a resource allocation method or a communication method in which a base station directly schedules SL transmission resources for a TX UE through predefined signaling (e.g., DCI or RRC message). For example, SL MODE 2 may refer to a resource allocation method or a communication method in which a UE independently selects SL transmission resources from a resource pool preconfigured or configured by a base station or a network. For example, a UE that performs SL communication based on SL MODE 1 may be referred to as a MODE 1UE or a MODE 1TXUE, and a UE that performs SL communication based on SL MODE 2 may be referred to as a MODE 2UE or a MODE 2TX UE.

[0164] In addition, in the present disclosure, for example, a dynamic grant (DG) may be replaced / replaced by a configuration grant (CG) and / or a semi-persistent scheduling (SPS) grant, or vice versa. For example, a DG may be replaced / replaced by a combination of a CG and an SPS grant, or vice versa. For example, a CG may include at least one of a configuration grant (CG) type 1 and / or a configuration grant (CG) type 2. For example, in CG type 1, a grant may be provided by RRC signaling and may be stored as a configuration grant. For example, in CG type 2, a grant may be provided by PDCCH and may be stored or deleted as a configuration grant based on L1 signaling indicating the enabling or disabling of the grant. For example, in CG type 1, a base station may allocate periodic resources to a TX UE via an RRC message. For example, in CG type 2, a base station may allocate periodic resources to a TX UE via an RRC message, and the base station may dynamically enable or disable the periodic resources via DCI.

[0165] In addition, in the present disclosure, a channel may be replaced / replaced by a signal, and vice versa. For example, the sending / receiving of a channel may include the sending / receiving of a signal. For example, the sending / receiving of a signal may include the sending / receiving of a channel. For example, the play may be replaced / replaced by at least one of unicast, multicast, and / or broadcast, and vice versa. For example, the play type may be replaced / replaced by at least one of unicast, multicast, and / or broadcast, and vice versa.

[0166] Furthermore, in the present disclosure, a resource may be replaced / substituted by a time slot or a symbol, and vice versa. For example, a resource may include a time slot and / or a symbol.

[0167] Furthermore, in the present disclosure, for example, for convenience of description, a (physical) channel used when the RX UE transmits at least one of the following information to the TX UE may be referred to as a PSFCH.

[0168] -SL HARQ feedback, SL CSI, SL (L1) RSRP

[0169] In addition, in the present disclosure, the PSSCH time slot associated with the PSFCH resource can be replaced / replaced by the PSSCH time slot associated with the PUCCH resource, and vice versa. Additionally / alternatively, for example, the PSSCH time slot associated with the PSFCH resource can be replaced / replaced by the PSCCH time slot associated with the PUCCH resource, and vice versa.

[0170] In addition, in the present disclosure, the Uu channel may include a UL channel and / or a DL channel. For example, the UL channel may include a PUSCH, a PUCCH, a sounding reference signal (SRS), etc. For example, the DL channel may include a PDCCH, a PDSCH, a PSS / SSS, etc. For example, the SL channel may include a PSCCH, a PSSCH, a PSFCH, a PSBCH, a PSSS / SSSS, etc.

[0171] In addition, in the present disclosure, the sidelink information may include at least one of a sidelink message, a sidelink packet, a sidelink service, a sidelink data, a sidelink control information and / or a sidelink transport block (TB). For example, the sidelink information may be sent via PSSCH and / or PSCCH.

[0172] In addition, for example, if the MODE 1TX UE reports SL HARQ feedback information to the base station, and if a predefined condition is met, the MODE 1TX UE may be allocated additional retransmission resources for the RX UE by receiving DCI from the base station. In this case, for example, the SL HARQ feedback information may be HARQ feedback information reported by the RX UE to the MODE 1TX UE. For example, the MODE 1TX UE may report the SL HARQ feedback information to the base station through a preconfigured PUCCH resource. For example, if the MODE 1TX UE reports NACK / DTX information to the base station, the MODE 1TX UE may be allocated additional retransmission resources for the RX UE through the DCI from the base station. For example, the DCI may include a MODE 1 dynamic grant (DG). In this document, for example, (1) if the MODE 1TX UE performs communication with a signaled / configured (destination) UE, and / or (2) if the MODE 1TX UE performs communication related to a signaled / configured (L1 or L2) destination (or source) ID, and / or (3) if the MODE 1TX UE performs communication related to a signaled / configured service type, and / or (4) if the MODE 1TX UE performs communication related to a signaled / configured playback type, and / or (5) if the MODE 1TX UE performs communication related to a signaled / configured QoS parameter, the MODE 1TX UE may perform transmission by using transmission resources allocated by a (specific) MODE 1 configuration grant (CG) or a MODE 1 dynamic grant (DG). For example, the signaling / configuration may be signaled / configured by a base station. For example, the signaling / configuration or configuration may be signaled / configured by a field in a DCI received from the base station.

[0173] In addition, if the MODE 1TX UE does not send PSSCH and / or PSCCH to the RX UE, there may be ambiguity about what information the MODE 1TX UE should report to the base station via the (pre-configured) PUCCH resources. In the following, in order to solve the above problem, a method for determining information sent to the base station via the PUCCH resources by the MODE 1TX UE and a device supporting the method are proposed.

[0174] For example, whether to apply all or part of the following proposed methods or rules may be configured specifically for resource pool, service type, play type, multicast HARQ feedback option, destination UE, (L1 or L2) destination (or source) ID, and / or QoS parameters. In this case, for example, the play type may be unicast or multicast. For example, the multicast HARQ feedback option may be multicast option 1 or multicast option 2.

[0175] Fig.12 The diagram shows a process in which a MODE 1TX UE reports information about SL HARQ feedback to a base station according to an embodiment of the present disclosure. Fig.12 The embodiments of the present invention can be combined with various embodiments of the present disclosure.

[0176] Reference Fig.12 In step S1210, the MODE 1TX UE may receive information on PSSCH and / or PSCCH resource scheduling in one or more PSSCH time slots associated with the PSFCH time slot from the base station through one or more MODE 1 grants.

[0177] In various embodiments of the present disclosure, a MODE 1 license may include a MODE 1DG or a DCI related to a MODE 1DG. For example, a MODE 1 license may include a MODE 1CG or a DCI related to a MODE 1CG. For example, a MODE 1 license may include a combination of a MODE 1DG and a MODE 1CG. For example, a DCI related to a MODE 1CG may be a DCI for enabling CG resources.

[0178] In step S1220, the MODE 1TX UE may perform sidelink transmission via the PSSCH and / or PSCCH. For example, based on information about PSSCH and / or PSCCH resource scheduling in one or more PSSCH slots associated with the PSFCH slot, the MODE 1TX UE may perform sidelink transmission via the PSSCH and / or PSCCH.

[0179] In step S1230, the MODE 1 TX UE may receive SL HARQ feedback from the RX UE through the PSFCH.

[0180] In step S1240, the MODE 1TX UE may report information about the SL HARQ feedback to the base station. For example, based on various embodiments of the present disclosure, the MODE 1TX UE may report information about the SL HARQ feedback to the base station. In this case, for example, the information about the SL HARQ feedback may be one of ACK or NACK / DTX. Alternatively, for example, based on various embodiments of the present disclosure, the MODE 1TX UE may stop or omit the reporting operation of the information about the SL HARQ feedback, or may not report the information about the SL HARQ feedback.

[0181] Based on the implementation of the present disclosure, for example, a MODE 1TX UE may determine whether to send a PUCCH to a base station and / or whether to send information to be sent to a base station through (pre-configured) PUCCH resources based on all or part of the methods / rules proposed in the present disclosure. For example, all or part of the methods / rules proposed in the present disclosure may be applied only to the PSSCH and / or PSCCH transmission time slots among multiple PSSCH and / or PSCCH transmission time slots associated with PSFCH resources, in which the SL HARQ feedback operation of the RXUE is enabled by predefined signaling by the base station. For example, all or part of the methods / rules proposed in the present disclosure may be applied only to the PSSCH and / or PSCCH transmission time slots among multiple PSSCH and / or PSCCH transmission time slots associated with PSFCH resources, in which the PUCCH-based SL HARQ feedback information report of the MODE 1TX UE is enabled by predefined signaling by the base station. For example, all or part of the method / rule proposed in the present disclosure may be applied only to the PSSCH and / or PSCCH transmission time slots of the PUCCH resources for reporting the SL HARQ feedback information of the MODE 1TX UE among the multiple PSSCH and / or PSCCH transmission time slots associated with the PSFCH resources through predefined signaling configured by the base station. In this case, for example, the predefined signaling may be signaling through a DCI including MODE 1CG or MODE 1DG. For example, whether all or part of the method / rule proposed in the present disclosure is applied may be configured differently based on the number of PSSCH and / or PSCCH transmission time slots associated with the PSFCH resources. For example, whether all or part of the method / rule proposed in the present disclosure is applied may be configured differently based on whether the semi-static SL HARQ code is configured. Specifically, for example, if a semi-static SL HARQ codebook is configured, and if the number of PSSCH and / or PSCCH transmission time slots associated with the PSFCH resources is set to M, the RX UE may send M-bit SL HARQ feedback to the MODE 1TX UE regardless of the number of (new) TBs actually received from the MODE 1TX UE. For example, if a semi-static SL HARQ codebook is configured, and if the number of PSSCH and / or PSCCH transmission time slots associated with the PSFCH resources is set to M, the RX UE may send M-bit SL HARQ feedback to the MODE 1TX UE regardless of the number of PSSCH and / or PSCCH actually received from the MODE 1TX UE.

[0182] For example, if a MODE 1TX UE actually performs (new) TB (e.g., PSSCH and / or PSCCH) transmission to an RX UE for more than or equal to a preconfigured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission time slots associated with PSFCH resources, the MODE 1TX UE may perform (PUCCH) transmission via PUCCH resources associated with the PSFCH resources or the PSSCH and / or PSCCH transmission time slots. In this document, for example, the MODE 1TX UE may configure / generate SL HARQ feedback information associated with the PSSCH and / or PSCCH transmission time slots in which the (new) TB transmission is not actually performed as ACK, and the MODE 1TX UE may report the ACK to the base station via the PUCCH resources.

[0183] For example, if a MODE 1TX UE actually performs (new) TB (e.g., PSSCH and / or PSCCH) transmission to an RX UE more than or equal to a pre-configured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission time slots associated with a PSFCH resource, the MODE 1TX UE may perform (PUCCH) transmission via the PSSCH and / or PSCCH transmission time slot or the PSFCH resource's associated PUCCH resource. Herein, for example, the MODE 1TX UE may configure / generate SL HARQ feedback information associated with the PSSCH and / or PSCCH transmission time slot in which the (new) TB transmission is not actually performed as NACK / DTX, and the MODE 1TX UE may report the NACK / DTX to the base station via the PUCCH resource.

[0184] For example, if the MODE 1TX UE does not actually perform (new) TB (e.g., PSSCH and / or PSCCH) transmissions to the RX UE more than or equal to a pre-configured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission time slots associated with the PSFCH resources, the MODE 1TX UE may not perform (PUCCH) transmissions through the PSSCH and / or PSCCH transmission time slots or the associated PUCCH resources of the PSFCH resources.

[0185] For example, if the MODE 1TX UE does not actually perform (new) TB (e.g., PSSCH and / or PSCCH) transmission for the RX UE more than or equal to a pre-configured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission time slots associated with the PSFCH resources, the MODE 1TX UE may perform (PUCCH) transmission via PUCCH resources associated with the PSSCH and / or PSCCH transmission time slots or PSFCH resources. In this document, for example, the MODE 1TX UE may configure / generate SL HARQ feedback information associated with the PSSCH and / or PSCCH transmission time slots in which the (new) TB transmission is not actually performed as ACK, and the MODE 1TX UE may report the ACK to the base station via the PUCCH resources.

[0186] For example, if the MODE 1TX UE does not actually perform (new) TB (e.g., PSSCH and / or PSCCH) transmission to the RX UE more than or equal to a pre-configured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission time slots associated with the PSFCH resources, the MODE 1TX UE may perform (PUCCH) transmission through PUCCH resources associated with the PSFCH resources or the PSSCH and / or PSCCH transmission time slots. In this document, for example, the MODE 1TX UE may configure / generate SL HARQ feedback information associated with the PSSCH and / or PSCCH transmission time slots in which the (new) TB transmission is not actually performed as NACK / DTX, and the MODE 1TX UE may report the NACK / DTX to the base station through the PUCCH resources.

[0187] For example, if the MODE 1TX UE actually performs (new) TB (e.g., PSSCH and / or PSCCH) transmission in some PSSCH / PSCCH transmission time slots among multiple PSSCH / PSCCH transmission time slots associated with the PSFCH resource, and if the MODE 1TX UE does not actually perform (new) TB (e.g., PSSCH and / or PSCCH) transmission in the remaining PSSCH / PSCCH transmission time slots, the RX UE may send NACK / DTX to the MODE 1TX UE through the PSFCH resource associated with the PSFCH / PSCCH time slot in which the (new) TB (e.g., PSSCH and / or PSCCH) is not received. In this case, the MODE 1TX UE may be aware of the PSSCH / PSCCH transmission time slots in which the (new) TB (e.g., PSSCH and / or PSCCH) transmission is actually performed among the multiple PSSCH / PSCCH transmission time slots associated with the PSFCH resource. Therefore, for example, even if a MODE 1TX UE receives NACK / DTX from an RX UE via PSFCH resources associated with a PSSCH / PSCCH transmission slot in which a (new) TB (e.g., PSSCH and / or PSCCH) is not actually performed, the MODE 1TX UE can reconfigure / generate the NACK / DTX into ACK and the MODE 1TX UE can report the ACK to the base station via PUCCH resources.

[0188] For example, if the MODE 1TX UE and the RX UE perform unicast communication and / or if the RX UE is configured to perform HARQ feedback operation based on groupcast option 2, even though the MODE 1TX UE performs (new) TB (e.g., PSSCH and / or PSCCH) transmission through the PSSCH / PSCCH transmission time slot associated with the PSFCH resource, the MODE 1TX UE may not receive SL HARQ feedback from the RX UE on the PSFCH resource associated with the (new) TB (e.g., PSSCH and / or PSCCH) transmission. In this case, the MODE 1TX UE may configure / generate the SL HARQ feedback information associated with the (new) TB (e.g., PSSCH and / or PSCCH) transmission as NACK / DTX, and the MODE 1TX UE may report the NACK / DTX to the base station through the PUCCH resource.

[0189] For example, if the MODE 1TX UE and the RX UE perform unicast communication and / or if the RX UE is configured to perform HARQ feedback operation based on groupcast option 2, the MODE 1TX UE may perform (new) TB (e.g., PSSCH and / or PSCCH) transmission through a PSSCH / PSCCH transmission time slot associated with a PSFCH resource, and the MODE 1TX UE may receive SL HARQ feedback indicating / representing DTX from the RX UE on a PSFCH resource associated with the (new) TB (e.g., PSSCH and / or PSCCH) transmission. In this case, the MODE 1TX UE may configure / generate SL HARQ feedback information associated with the (new) TB (e.g., PSSCH and / or PSCCH) transmission as NACK / DTX, and the MODE 1TX UE may report the NACK / DTX to the base station through a PUCCH resource.

[0190] For example, if the RX UE is configured to perform HARQ feedback operation based on multicast option 1, even though the MODE 1TX UE performs (new) TB (e.g., PSSCH and / or PSCCH) transmission through the PSSCH / PSCCH transmission time slot associated with the PSFCH resource, the MODE 1TX UE may not receive SL HARQ feedback from the RX UE on the PSFCH resource associated with the (new) TB (e.g., PSSCH and / or PSCCH) transmission. In this case, the MODE 1TX UE may configure / generate the SL HARQ feedback information associated with the (new) TB (e.g., PSSCH and / or PSCCH) transmission as ACK, and the MODE 1TX UE may report the ACK to the base station through the PUCCH resource.

[0191] For example, the MODE 1TX UE may receive information related to the multicast option 2 from the base station through MODE 1CG and / or MODE 1DG. For example, the MODE 1TX UE may receive information related to the multicast option 2 enabled through MODE 1CG and / or MODE 1DG from the base station.

[0192] For example, if the MODE 1TX UE receives DCI related to MODE 1CG (e.g., DCI for enabling / disabling CG resources) from the base station, the MODE 1TX UE may send a confirmation message to the base station. In this case, for example, the confirmation message may be sent based on the MAC CE. For example, the confirmation message may include information related to whether the MODE 1TX UE has successfully received the DCI related to MODE 1CG. On the other hand, for example, if the MODE 1TX UE receives DCI related to MODE 1DG (e.g., DCI for allocating DG resources) from the base station, the MODE 1TX UE may not send information related to whether the MODE 1TX UE has successfully received the DCI related to MODE 1DG to the base station. Therefore, if the base station sends DCI related to MODE 1CG to the MODE 1TX UE, the base station may determine whether the MODE 1TX UE has successfully received the DCI. However, if the base station sends DCI related to MODE 1DG to the MODE 1TX UE, it may be difficult for the base station to determine whether the MODE 1TX UE has successfully received the DCI. Specifically, for example, if the MODE 1TX UE does not transmit the PUCCH to the base station, it may be difficult for the base station to distinguish whether (i) the MODE 1TX UE does not perform PUCCH transmission because it cannot receive the DCI related to the MODE 1DG, or (ii) the MODE 1TX UE does not perform PUCCH transmission because it does not perform (new) TB (e.g., PSSCH and / or PSCCH) transmission to the RX UE. With this in mind, for example, different rules may be applied depending on whether the MODE 1TX UE receives the DCI related to the MODE 1CG or the DCI related to the MODE 1DG from the base station.

[0193] For example, if the MODE 1TX UE receives DCI related to the MODE 1CG from the base station, and if the MODE 1TX UE actually performs (new) TB (e.g., PSSCH and / or PSCCH) transmission to the RX UE more than or equal to a preconfigured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission time slots related to the PSFCH resources, the MODE 1TX UE may perform (PUCCH) transmission through the PUCCH resources related to the PSFCH resources or the PSSCH and / or PSCCH transmission time slots. In this document, for example, the MODE 1TX UE may configure / generate SL HARQ feedback information related to the PSSCH and / or PSCCH transmission time slots in which the (new) TB transmission is not actually performed as ACK, and the MODE 1TX UE may report the ACK to the base station through the PUCCH resources.

[0194] For example, if a MODE 1TX UE receives a DCI related to a MODE 1CG from a base station, and if the MODE 1TX UE actually performs (new) TB (e.g., PSSCH and / or PSCCH) transmission to the RX UE more than or equal to a preconfigured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission time slots related to the PSFCH resources, the MODE 1TX UE may perform (PUCCH) transmission through PUCCH resources related to the PSSCH and / or PSCCH transmission time slots or PSFCH resources. Herein, for example, the MODE 1TX UE may configure / generate SL HARQ feedback information related to the PSSCH and / or PSCCH transmission time slots in which the (new) TB transmission is not actually performed as NACK / DTX, and the MODE 1TX UE may report the NACK / DTX to the base station through the PUCCH resources.

[0195] For example, if a MODE 1TX UE receives a DCI related to a MODE 1CG from a base station, and if the MODE 1TX UE does not actually perform a (new) TB (e.g., PSSCH and / or PSCCH) transmission to the RX UE more than or equal to a pre-configured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission slots associated with PSFCH resources, the MODE 1TX UE may not perform a (PUCCH) transmission via the PUCCH resources associated with the PSSCH and / or PSCCH transmission slots or the PSFCH resources.

[0196] For example, if the MODE 1TX UE receives DCI related to the MODE 1DG from the base station, and if the MODE 1TX UE actually performs (new) TB (e.g., PSSCH and / or PSCCH) transmission for the RX UE more than or equal to a preconfigured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission time slots related to the PSFCH resources, the MODE 1TX UE may perform (PUCCH) transmission through the PUCCH resources related to the PSSCH and / or PSCCH transmission time slots or the PSFCH resources. Herein, for example, the MODE 1TX UE may configure / generate the SL HARQ feedback information related to the PSSCH and / or PSCCH transmission time slots in which the (new) TB transmission is not actually performed as ACK, and the MODE 1TX UE may report the ACK to the base station through the PUCCH resources.

[0197] For example, if a MODE 1TX UE receives a DCI related to a MODE 1DG from a base station, and if the MODE 1TX UE actually performs (new) TB (e.g., PSSCH and / or PSCCH) transmission to the RX UE more than or equal to a preconfigured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission time slots related to the PSFCH resources, the MODE 1TX UE may perform (PUCCH) transmission through PUCCH resources related to the PSSCH and / or PSCCH transmission time slots or PSFCH resources. Herein, for example, the MODE 1TX UE may configure / generate SL HARQ feedback information related to the PSSCH and / or PSCCH transmission time slots in which the (new) TB transmission is not actually performed as NACK / DTX, and the MODE 1TX UE may report the NACK / DTX to the base station through the PUCCH resources.

[0198] For example, if the MODE 1TX UE receives DCI related to the MODE 1DG from the base station, and if the MODE 1TX UE does not actually perform (new) TB (e.g., PSSCH and / or PSCCH) transmission for the RX UE more than or equal to a pre-configured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission time slots related to the PSFCH resources, the MODE 1TX UE may perform (PUCCH) transmission through the PUCCH resources related to the PSSCH and / or PSCCH transmission time slots or the PSFCH resources. Herein, for example, the MODE 1TX UE may configure / generate the SL HARQ feedback information related to the PSSCH and / or PSCCH transmission time slots in which the (new) TB transmission is not actually performed as ACK, and the MODE 1TX UE may report the ACK to the base station through the PUCCH resources.

[0199] For example, if a MODE 1TX UE receives a DCI related to a MODE 1DG from a base station, and if the MODE 1TX UE does not actually perform (new) TB (e.g., PSSCH and / or PSCCH) transmission to the RX UE more than or equal to a preconfigured threshold number of times (e.g., once) on multiple PSSCH and / or PSCCH transmission time slots related to PSFCH resources, the MODE 1TX UE may perform (PUCCH) transmission through PUCCH resources related to the PSSCH and / or PSCCH transmission time slots or PSFCH resources. Herein, for example, the MODE 1TX UE may configure / generate SL HARQ feedback information related to the PSSCH and / or PSCCH transmission time slots in which the (new) TB transmission is not actually performed as NACK / DTX, and the MODE 1TX UE may report the NACK / DTX to the base station through the PUCCH resources.

[0200] Based on the embodiments of the present disclosure, if a MODE 1TX UE performs transmission on a PSSCH and / or PSCCH transmission resource allocated by a DCI related to MODE 1CG or a DCI related to MODE 1DG for a service that does not require SL HARQ feedback transmission or a service that does not enable SL HARQ feedback transmission (e.g., a broadcast message), the MODE 1TX UE may report ACK to the base station through a (pre-configured) PUCCH resource. For example, if a MODE 1TX UE performs transmission on a PSSCH and / or PSCCH transmission resource allocated by a DCI related to MODE 1CG or a DCI related to MODE 1DG for a service that does not require SL HARQ feedback transmission or a service that does not enable SL HARQ feedback transmission (e.g., a broadcast message), the MODE 1TX UE may not perform PUCCH transmission.

[0201] Fig.13 The diagram shows a process in which a MODE 1TX UE reports information about SL HARQ feedback to a base station according to an embodiment of the present disclosure. Fig.13 The embodiments of the present invention can be combined with various embodiments of the present disclosure.

[0202] Reference Fig.13In step S1310, the TX UE may receive information related to SL resources and information related to PUCCH resources from the base station. In step S1320, the TX UE may send a MAC PDU for which HARQ feedback is disabled to the RX UE based on the SL resources. For example, the MAC PDU may not need to be resent. For example, if the MAC PDU does not need to be resent, then in step S1330, the TX UE may generate ACK information related to the transmission of the MAC PDU for which HARQ feedback is disabled. In step S1340, the TX UE may send ACK information to the base station based on the PUCCH resources.

[0203] Based on the embodiments of the present disclosure, the UE may determine the timing of PUCCH transmission based on Table 5.

[0204] [Table 5]

[0205]

[0206]

[0207] For example, in the case of CG type 1, the time slot offset between PSFCH reception and corresponding PUCCH transmission can be configured for the UE via RRC signaling. In this document, for example, the parameter set of the indicated time slot offset can be the same as the parameter set of PUCCH. For example, a time slot offset of 0 can represent the latest time slot overlapping with PSFCH reception.

[0208] For example, in the case of CG type 2 or DG, the time slot offset between PSFCH reception and corresponding PUCCH transmission can be indicated to the UE via DCI. In this document, for example, the parameter set of the indicated time slot offset can be the same as the parameter set of PUCCH. For example, a time slot offset of 0 can represent the latest time slot overlapping with PSFCH reception.

[0209] Based on the embodiments of the present disclosure, the UE may report HARQ feedback to the base station based on Table 6 and / or Table 7.

[0210] [Table 6]

[0211]

[0212]

[0213] [Table 7]

[0214]

[0215]

[0216] Based on the implementation of the present disclosure, the UE may report HARQ feedback to the base station based on Table 8.

[0217] [Table 8]

[0218]

[0219]

[0220]

[0221] Based on the implementation of the present disclosure, the UE may report HARQ feedback to the base station based on Table 9.

[0222] [Table 9]

[0223]

[0224]

[0225] Fig.14 A method for a first device to report SL HARQ feedback to a base station based on an embodiment of the present disclosure is shown. Fig.14 The embodiments of the present invention can be combined with various embodiments of the present disclosure.

[0226] Reference Fig.14 In step S1410, the first device may receive a MODE 1 grant from the base station. For example, the MODE 1 grant may include at least one of a MODE 1 dynamic grant DCI and / or a MODE 1 configuration grant DCI. For example, the MODE 1 grant may include information about PSSCH and / or PSCCH resources scheduled in one or more PSSCH time slots associated with the PSFCH time slot and information about PUCCH resources for reporting information of SL HARQ feedback received in the PSFCH time slot. For example, based on various embodiments of the present disclosure, the PUCCH resources may be allocated to the first device.

[0227] In step S1420, the first device may send information about SL HARQ feedback to the base station. For example, based on MODE 1 dynamic grant or MODE 1 configuration grant, the first device may determine information about SL HARQ feedback and / or whether to send information about SL HARQ feedback to the base station by using PUCCH resources. For example, based on various embodiments of the present disclosure, the first device may determine information about SL HARQ feedback and / or whether to send information about SL HARQ feedback to the base station by using PUCCH resources. For example, the information about SL HARQ feedback may be at least one of ACK, NACK, and / or DTX.

[0228] Fig.15 A method for a base station to receive SL HARQ feedback from a first device based on an embodiment of the present disclosure is shown. Fig.15 The embodiments of the present invention can be combined with various embodiments of the present disclosure.

[0229] Reference Fig.15 In step S1510, the base station may send a MODE 1 grant to the first device. For example, the MODE 1 grant may include at least one of a MODE 1 dynamic grant DCI and / or a MODE 1 configuration grant DCI. For example, the MODE 1 grant may include information about PSSCH and / or PSCCH resources scheduled in one or more PSSCH time slots associated with the PSFCH time slot and information about PUCCH resources for reporting information about SL HARQ feedback received in the PSFCH time slot. For example, based on various embodiments of the present disclosure, the PUCCH resources may be allocated to the first device.

[0230] In step S1520, the base station may receive information about SL HARQ feedback from the first device. For example, based on MODE 1 dynamic permission or MODE 1 configuration permission, the first device may determine information about SL HARQ feedback and / or whether to send information about SL HARQ feedback to the base station by using PUCCH resources. For example, based on various embodiments of the present disclosure, the first device may determine information about SL HARQ feedback and / or whether to send information about SL HARQ feedback to the base station by using PUCCH resources. For example, the information about SL HARQ feedback may be at least one of ACK, NACK and / or DTX.

[0231] Fig.16 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown. Fig.16 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0232] Reference Fig.16 In step S1610, the first device may receive information related to a first side link (SL) resource and information related to a physical uplink control channel (PUCCH) resource from a base station. In step S1620, the first device may send a medium access control (MAC) packet data unit (PDU) for which hybrid automatic repeat request (HARQ) feedback is disabled to the second device based on the SL resource. In step S1630, the first device may generate an ACK related to the transmission of the MAC PDU for which HARQ feedback is disabled. In step S1640, the first device may send an ACK to the base station based on the PUCCH resource.

[0233] For example, based on disabling HARQ feedback for the MAC PDU, the first device may generate an ACK associated with the transmission of the MAC PDU.For example, based on not needing to resend the MAC PDU, the first device may generate an ACK associated with the transmission of the MAC PDU.

[0234] For example, information related to SL resources and information related to PUCCH resources may be received from a base station via downlink control information (DCI), and based on successful decoding of the DCI by the first device, an ACK may be sent to the base station based on the PUCCH resources. For example, information related to SL resources and information related to PUCCH resources may be received from a base station via at least one of downlink control information (DCI) or a radio resource control (RRC) message. For example, the base station may not allocate retransmission resources for the MAC PDU based on the ACK. For example, a logical channel for which HARQ feedback is disabled and a logical channel for which HARQ feedback is enabled may not be multiplexed simultaneously in the MAC PDU.

[0235] In addition, for example, the first device may determine a physical sidelink feedback channel (PSFCH) resource based on a time slot index of a physical sidelink shared channel (PSSCH) resource and a subchannel index of the PSSCH resource. For example, the SL resource may include a physical sidelink control channel (PSCCH) resource and a PSSCH resource. For example, the information related to the PUCCH resource may include information related to the time slot offset between the PUCCH resource and the PSFCH resource, and the PUCCH resource may be included in a time slot that is after the time slot offset from the time slot including the PSFCH resource. For example, based on disabling HARQ feedback for the MAC PDU, the second device may not send HARQ feedback for the MAC PDU on the PSFCH resource.

[0236] In addition, for example, the first device may send side link control information (SCI) including HARQ feedback disabling information to the second device via the PSSCH, wherein the HARQ feedback disabling information indicates that HARQ feedback is disabled for the MAC PDU. For example, based on the HARQ feedback disabling information, the second device may not send HARQ feedback for the MAC PDU.

[0237] For example, the PUCCH resources may be resources related to the SL resources.

[0238] The proposed method can be applied to the devices described in the present disclosure. First, the processor 102 of the first device 100 can control the transceiver 106 to receive information related to the side link (SL) resources and information related to the physical uplink control channel (PUCCH) resources from the base station. In addition, the processor 102 of the first device 100 can control the transceiver 106 to send a medium access control (MAC) packet data unit (PDU) for which hybrid automatic repeat request (HARQ) feedback is disabled to the second device based on the SL resources. In addition, the processor 102 of the first device 100 can generate an ACK related to the transmission of the MAC PDU for which HARQ feedback is disabled. In addition, the processor 102 of the first device 100 can control the transceiver 106 to send an ACK to the base station based on the PUCCH resources.

[0239] Based on the embodiments of the present disclosure, a first device configured to perform wireless communication may be provided. For example, the first device may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, one or more processors may execute instructions to perform the following operations: receiving information related to side link (SL) resources and information related to physical uplink control channel (PUCCH) resources from a base station; based on the SL resources, sending a medium access control (MAC) packet data unit (PDU) for which hybrid automatic repeat request (HARQ) feedback is disabled to a second device; generating an ACK related to the sending of a MAC PDU for which HARQ feedback is disabled; and sending an ACK to the base station based on the PUCCH resources.

[0240] Based on the embodiments of the present disclosure, a device configured to control a first user equipment (UE) performing wireless communication may be provided. For example, the device may include: one or more processors; and one or more memories, which are operatively connected to the one or more processors and store instructions. For example, one or more processors may execute instructions to perform the following operations: receiving information related to side link (SL) resources and information related to physical uplink control channel (PUCCH) resources from a base station; based on the SL resources, sending a medium access control (MAC) packet data unit (PDU) for which hybrid automatic repeat request (HARQ) feedback is disabled to a second UE; generating an ACK related to the sending of a MAC PDU for which the HARQ feedback is disabled; and sending an ACK to the base station based on the PUCCH resources.

[0241] Based on the embodiments of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, when the instructions are executed, the first device may perform the following operations: receiving information related to side link (SL) resources and information related to physical uplink control channel (PUCCH) resources from a base station; based on the SL resources, sending a medium access control (MAC) packet data unit (PDU) for which hybrid automatic repeat request (HARQ) feedback is disabled to a second device; generating an ACK related to the sending of the MAC PDU for which HARQ feedback is disabled; and sending an ACK to the base station based on the PUCCH resources.

[0242] Fig.17 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown. Fig.17 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0243] Reference Fig.17 In step S1710, the base station may send information related to the side link (SL) resources and information related to the physical uplink control channel (PUCCH) resources to the first device. In step S1720, based on the first device sending a medium access control (MAC) packet data unit (PDU) for which hybrid automatic repeat request (HARQ) feedback is disabled to the second device based on the SL resources, the base station may receive an ACK from the first device based on the PUCCH resources.

[0244] The proposed method can be applied to the device described in the present disclosure. First, the processor 202 of the base station 200 can control the transceiver 206 to send information related to the side link (SL) resource and information related to the physical uplink control channel (PUCCH) resource to the first device. In addition, based on the first device sending a medium access control (MAC) packet data unit (PDU) for which hybrid automatic repeat request (HARQ) feedback is disabled to the second device based on the SL resource, the processor 202 of the base station 200 can receive an ACK from the first device based on the PUCCH resource.

[0245] Based on the embodiments of the present disclosure, a base station configured to perform wireless communication may be provided. For example, the base station may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, one or more processors may execute instructions to perform the following operations: sending information related to a side link (SL) resource and information related to a physical uplink control channel (PUCCH) resource to a first device; and sending a medium access control (MAC) packet data unit (PDU) for disabling hybrid automatic repeat request (HARQ) feedback to a second device based on the SL resource, and receiving an ACK from the first device based on the PUCCH resource.

[0246] Based on the embodiments of the present disclosure, a device configured to control a base station that performs wireless communication may be provided. For example, the device may include: one or more processors; and one or more memories, which are operatively connected to the one or more processors and store instructions. For example, one or more processors may execute instructions to perform the following operations: send information related to sidelink (SL) resources and information related to physical uplink control channel (PUCCH) resources to a first user equipment (UE); and send a medium access control (MAC) packet data unit (PDU) for disabling hybrid automatic repeat request (HARQ) feedback to a second UE based on the SL resources, and receive an ACK from the first UE based on the PUCCH resources.

[0247] Based on the embodiments of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, when the instructions are executed, the base station may perform the following operations: sending information related to a side link (SL) resource and information related to a physical uplink control channel (PUCCH) resource to a first device; and sending a medium access control (MAC) packet data unit (PDU) for which hybrid automatic repeat request (HARQ) feedback is disabled to a second device based on the SL resource by the first device, and receiving an ACK from the first device based on the PUCCH resource.

[0248] Fig.18 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown. Fig.18 The embodiments of the present invention can be combined with various embodiments of the present disclosure.

[0249] Reference Fig.18, in step S1810, the first device may receive information related to a physical uplink control channel (PUCCH) resource and information related to M side link (SL) time slots from a base station. In step S1820, the first device may perform N physical side link shared channel (PSSCH) transmissions based on N SL time slots among the M SL time slots. In step S1830, the first device may determine a physical side link feedback channel (PSFCH) time slot associated with the N PSSCH transmissions. In step S1840, the first device may receive information about K SL hybrid automatic repeat request (HARQ) feedbacks on a PSFCH time slot in response to the N PSSCH transmissions. In step S1850, the first device may send information about L HARQ feedbacks to the base station based on the PUCCH resources. For example, one PSFCH slot may be associated with L SL slots, and M, N, K, and L may be positive integers, and L may be greater than or equal to M, and M may be greater than or equal to N, and N may be greater than or equal to K.

[0250] For example, L, which is the number of SL slots associated with one PSFCH slot, may be equal to the period of the PSFCH resource.

[0251] For example, information about LN HARQ feedbacks related to LN SL slots in which N PSSCH transmissions are not performed among L SL slots related to one PSFCH slot may be generated as ACK, and L may be greater than N.

[0252] For example, based on N being greater than or equal to a threshold, information about L HARQ feedbacks may be sent to the base station based on PUCCH resources, and based on N being less than a threshold, information about L HARQ feedbacks may not be sent to the base station based on PUCCH resources.

[0253] For example, LN NACKs may be received based on LN PSFCH resources associated with LN SL slots in which N PSSCH transmissions are not performed among L SL slots associated with one PSFCH slot, and the LN PSFCH resources may be included in one PSFCH slot, and K may be equal to M, and L may be greater than N. For example, information about LN HARQ feedbacks associated with LN NACKs received based on the LN PSFCH resources may be generated as ACK.

[0254] For example, in response to N PSSCH transmissions, SL HARQ feedback may not be received based on NK PSFCH resources on one PSFCH slot, and information about NK HARQ feedbacks related to the NK PSFCH resources may be generated as NACK, and K may be less than N.

[0255] For example, in response to N PSSCH transmissions, SL HARQ feedback may not be received based on NK PSFCH resources on one PSFCH slot, and information about NK HARQ feedbacks related to the NK PSFCH resources may be generated as NACK, and K may be less than N.

[0256] For example, the PUCCH resource and the M SL time slots may be allocated to the first device through a configuration grant (CG). In this case, based on N being less than a threshold, information about the L HARQ feedbacks may not be sent to the base station based on the PUCCH resource.

[0257] For example, PUCCH resources and M SL time slots may be allocated to the first device through dynamic grant (DG). In this case, based on N being less than a threshold, information about L HARQ feedbacks may not be sent to the base station based on PUCCH resources, and based on L being greater than N, information about LN HARQ feedbacks related to LN SL time slots among the L SL time slots in which N PSSCH transmissions are not performed may be generated as ACK.

[0258] For example, the SL slot may be a slot including a specific number or more of UL symbols.

[0259] The proposed method can be applied to the device described in the present disclosure. First, the processor 102 of the first device 100 can control the transceiver 106 to receive information related to the physical uplink control channel (PUCCH) resource and information related to the M side link (SL) time slots from the base station. In addition, the processor 102 of the first device 100 can control the transceiver 106 to perform N physical side link shared channels (PSSCH) transmissions based on N SL time slots among the M SL time slots. In addition, the processor 102 of the first device 100 can determine a physical side link feedback channel (PSFCH) time slot associated with the N PSSCH transmissions. In addition, the processor 102 of the first device 100 can control the transceiver 106 to receive information about K SL hybrid automatic repeat request (HARQ) feedbacks on a PSFCH time slot in response to the N PSSCH transmissions. In addition, the processor 102 of the first device 100 can control the transceiver 106 to send information about L HARQ feedbacks to the base station based on the PUCCH resource. For example, one PSFCH slot may be associated with L SL slots, and M, N, K, and L may be positive integers, and L may be greater than or equal to M, and M may be greater than or equal to N, and N may be greater than or equal to K.

[0260] Based on the embodiments of the present disclosure, a first device configured to perform wireless communication may be provided. For example, the first device may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, one or more processors may execute instructions to perform the following operations: receiving information related to physical uplink control channel (PUCCH) resources and information related to M side link (SL) time slots from a base station; performing N physical side link shared channel (PSSCH) transmissions based on N SL time slots among the M SL time slots; determining a physical side link feedback channel (PSFCH) time slot associated with the N PSSCH transmissions; receiving information about K SL hybrid automatic repeat request (HARQ) feedbacks on a PSFCH time slot in response to the N PSSCH transmissions; and sending information about L HARQ feedback information to the base station based on the PUCCH resources. For example, one PSFCH slot may be associated with L SL slots, and M, N, K, and L may be positive integers, and L may be greater than or equal to M, and M may be greater than or equal to N, and N may be greater than or equal to K.

[0261] Based on the embodiments of the present disclosure, a device configured to control a first user equipment (UE) performing wireless communication may be provided. For example, the device may include: one or more processors; and one or more memories, which are operatively connected to the one or more processors and store instructions. For example, one or more processors may execute instructions to perform the following operations: receiving information related to physical uplink control channel (PUCCH) resources and information related to M side link (SL) time slots from a base station; performing N physical side link shared channel (PSSCH) transmissions based on N SL time slots among the M SL time slots; determining a physical side link feedback channel (PSFCH) time slot associated with the N PSSCH transmissions; receiving information about K SL hybrid automatic repeat request (HARQ) feedbacks on a PSFCH time slot in response to the N PSSCH transmissions; and sending information about L HARQ feedback information to the base station based on the PUCCH resources. For example, one PSFCH slot may be associated with L SL slots, and M, N, K, and L may be positive integers, and L may be greater than or equal to M, and M may be greater than or equal to N, and N may be greater than or equal to K.

[0262] Based on the embodiments of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, when the instructions are executed, the first device may perform the following operations: receiving information related to physical uplink control channel (PUCCH) resources and information related to M side link (SL) time slots from a base station; performing N physical side link shared channel (PSSCH) transmissions based on N SL time slots among the M SL time slots; determining a physical side link feedback channel (PSFCH) time slot related to the N PSSCH transmissions; receiving information about K SL hybrid automatic repeat request (HARQ) feedbacks on a PSFCH time slot in response to N PSSCH transmissions; and sending information about L HARQ feedbacks to the base station based on PUCCH resources. For example, a PSFCH time slot may be related to L SL time slots, and M, N, K, and L may be positive integers, and L may be greater than or equal to M, and M may be greater than or equal to N, and N may be greater than or equal to K.

[0263] Fig.19 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown. Fig.19 The embodiments of the present invention can be combined with various embodiments of the present disclosure.

[0264] Reference Fig.19 , in step S1910, the base station may send information related to a physical uplink control channel (PUCCH) resource and information related to M side link (SL) time slots to the first device. In step S1920, the base station may receive information about L hybrid automatic repeat request (HARQ) feedbacks from the first device based on the PUCCH resources. For example, N physical side link shared channel (PSSCH) transmissions may be performed by the first device based on N SL time slots among M SL time slots, and one physical side link feedback channel (PSFCH) time slot related to the N PSSCH transmissions may be determined by the first device, and information about K SL HARQ feedbacks may be received by the first device in response to the N PSSCH transmissions on one PSFCH time slot. For example, one PSFCH time slot may be related to L SL time slots, and M, N, K, and L may be positive integers, and L may be greater than or equal to M, and M may be greater than or equal to N, and N may be greater than or equal to K.

[0265] The proposed method can be applied to the device described in the present disclosure. First, the processor 202 of the base station 100 can control the transceiver 206 to send information related to the physical uplink control channel (PUCCH) resource and information related to M side link (SL) time slots to the first device. In addition, the processor 202 of the base station 100 can control the transceiver 206 to receive information about hybrid automatic repeat request (HARQ) feedback from the first device based on the PUCCH resource. For example, N physical side link shared channel (PSSCH) transmissions can be performed by the first device based on N SL time slots among M SL time slots, and one physical side link feedback channel (PSFCH) time slot related to the N PSSCH transmissions can be determined by the first device, and information about K SL HARQ feedbacks can be received by the first device in response to the N PSSCH transmissions on one PSFCH time slot. For example, one PSFCH slot may be associated with L SL slots, and M, N, K, and L may be positive integers, and L may be greater than or equal to M, and M may be greater than or equal to N, and N may be greater than or equal to K.

[0266] Based on the embodiments of the present disclosure, a base station configured to perform wireless communication may be provided. For example, the base station may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, one or more processors may execute instructions to perform the following operations: send information related to physical uplink control channel (PUCCH) resources and information related to M side link (SL) time slots to a first device; and receive information about L hybrid automatic repeat request (HARQ) feedbacks from a first device based on PUCCH resources. For example, N physical side link shared channel (PSSCH) transmissions may be performed by a first device based on N SL time slots among M SL time slots, and a physical side link feedback channel (PSFCH) time slot associated with the N PSSCH transmissions may be determined by the first device, and information about K SL HARQ feedbacks may be received by the first device in response to N PSSCH transmissions on a PSFCH time slot. For example, one PSFCH slot may be associated with L SL slots, and M, N, K, and L may be positive integers, and L may be greater than or equal to M, and M may be greater than or equal to N, and N may be greater than or equal to K.

[0267] Based on the embodiments of the present disclosure, a device configured to control a base station performing wireless communication may be provided. For example, the device may include: one or more processors; and one or more memories, which are operatively connected to the one or more processors and store instructions. For example, one or more processors may execute instructions to perform the following operations: send information related to physical uplink control channel (PUCCH) resources and information related to M side link (SL) time slots to a first user equipment (UE); and receive information about L hybrid automatic repeat request (HARQ) feedbacks from the first UE based on the PUCCH resources. For example, N physical side link shared channel (PSSCH) transmissions may be performed by the first UE based on N SL time slots among the M SL time slots, and a physical side link feedback channel (PSFCH) time slot associated with the N PSSCH transmissions may be determined by the first UE, and information about K SL HARQ feedbacks may be received by the first UE in response to the N PSSCH transmissions on a PSFCH time slot. For example, the one PSFCH time slot may be associated with L SL time slots, and M, N, K and L may be positive integers, and L may be greater than or equal to M, and M may be greater than or equal to N, and N may be greater than or equal to K.

[0268] Based on the embodiments of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, when the instruction is executed, the base station may perform the following operations: sending information related to physical uplink control channel (PUCCH) resources and information related to M side link (SL) time slots to the first device; and receiving information about L hybrid automatic repeat request (HARQ) feedbacks from the first device based on the PUCCH resources. For example, N physical side link shared channel (PSSCH) transmissions may be performed by the first device based on N SL time slots among M SL time slots, and a physical side link feedback channel (PSFCH) time slot associated with the N PSSCH transmissions may be determined by the first device, and information about K SLHARQ feedbacks may be received by the first device in response to N PSSCH transmissions on a PSFCH time slot. For example, a PSFCH time slot may be associated with L SL time slots, and M, N, K, and L may be positive integers, and L may be greater than or equal to M, and M may be greater than or equal to N, and N may be greater than or equal to K.

[0269] Fig. 20 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown. Fig. 20 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0270] Reference Fig. 20, in step S2010, the first device may receive information related to a sidelink (SL) bandwidth part (BWP) from a base station. In step S2020, the first device may receive information related to an uplink (UL) BWP from a base station. In step S2030, the first device may receive information related to SL resources and information related to UL resources from a base station to report hybrid automatic repeat request (HARQ) feedback. In step S2040, the first device may send data for which HARQ feedback is disabled to the second device through a physical sidelink shared channel (PSSCH) based on the SL resources in the SL BWP. In step S2050, the first device may generate an ACK related to the sending of data for which HARQ feedback is disabled. In step S2060, the first device may send an ACK to the base station based on the UL resources in the UL BWP.

[0271] For example, the UL resources for reporting HARQ feedback may include physical uplink control channel (PUCCH) resources.For example, the data for which HARQ feedback is disabled may be a medium access control (MAC) packet data unit (PDU) for which HARQ feedback is disabled.

[0272] For example, based on the transmission of data for which HARQ feedback is disabled, the first device may generate an ACK associated with the transmission of the data.For example, based on not requiring retransmission of the data, the first device may generate an ACK associated with the transmission of the data.

[0273] For example, the UL resources used to report the HARQ feedback may be resources related to the SL resources.For example, the base station may not allocate retransmission resources for data to the first device based on the ACK.

[0274] In addition, for example, the first device may determine a physical sidelink feedback channel (PSFCH) resource based on a time slot index of a resource associated with the PSSCH and a subchannel index of a resource associated with the PSSCH. For example, the information related to the UL resource may include information related to a time slot offset between the UL resource and the PSFCH resource, and the UL resource may be included in a time slot that is after the time slot offset from the time slot including the PSFCH resource. For example, in response to the transmission of data for which HARQ feedback is disabled, the second device may not transmit HARQ feedback for the data on the PSFCH resource.

[0275] In addition, for example, the first device may transmit sidelink control information (SCI) including HARQ feedback disabling information to the second device through the PSSCH, the HARQ feedback disabling information indicating that HARQ feedback is disabled for data.

[0276] For example, the SL resources may be periodic resources or dynamic resources allocated by the base station to the first device, and information related to the SL resources and information related to the UL resources may be received from the base station through at least one of downlink control information (DCI) or radio resource control (RRC) messages. For example, based on the first device successfully decoding the DCI, an ACK may be sent to the base station based on the UL resources.

[0277] The proposed method can be applied to the device described in the present disclosure. First, the processor 102 of the first device 100 can control the transceiver 106 to receive information related to the side link (SL) bandwidth part (BWP) from the base station. In addition, the processor 102 of the first device 100 can control the transceiver 106 to receive information related to the uplink (UL) BWP from the base station. In addition, the processor 102 of the first device 100 can control the transceiver 106 to receive information related to the SL resources and information related to the UL resources from the base station to report hybrid automatic repeat request (HARQ) feedback. In addition, the processor 102 of the first device 100 can control the transceiver 106 to send data for disabling HARQ feedback to the second device through the physical side link shared channel (PSSCH) based on the SL resources in the SL BWP. In addition, the processor 102 of the first device 100 can generate an ACK related to the transmission of data for disabling HARQ feedback. In addition, the processor 102 of the first device 100 can control the transceiver 106 to send an ACK to the base station based on the UL resources in the UL BWP.

[0278] Based on the embodiments of the present disclosure, a first device configured to perform wireless communication may be provided. For example, the first device may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, the one or more processors may execute instructions to perform the following operations: receiving information related to a sidelink (SL) bandwidth part (BWP) from a base station: receiving information related to an uplink (UL) BWP from a base station; receiving information related to SL resources and information related to UL resources from a base station to report hybrid automatic repeat request (HARQ) feedback: sending data for disabling HARQ feedback to a second UE through a physical sidelink shared channel (PSSCH) based on the SL resources in the SL BWP; generating an ACK related to the sending of data for disabling HARQ feedback; and sending an ACK to the base station based on the UL resources in the UL BWP.

[0279] Based on an embodiment of the present disclosure, a device configured to control a first user equipment (UE) performing wireless communication may be provided. For example, the device may include: one or more processors; and one or more memories, which are operatively connected to the one or more processors and store instructions. For example, one or more processors may execute instructions to perform the following operations: receiving information related to a sidelink (SL) bandwidth part (BWP) from a base station: receiving information related to an uplink (UL) BWP from a base station; receiving information related to SL resources and information related to UL resources from a base station to report hybrid automatic repeat request (HARQ) feedback: sending data for disabling HARQ feedback to a second device via a physical sidelink shared channel (PSSCH) based on the SL resources in the SL BWP; generating an ACK related to the sending of data for disabling HARQ feedback; and sending an ACK to the base station based on the UL resources in the UL BWP.

[0280] Based on the embodiments of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, when the instructions are executed, the first device may perform the following operations: receiving information related to a sidelink (SL) bandwidth part (BWP) from a base station: receiving information related to an uplink (UL) BWP from a base station; receiving information related to SL resources and information related to UL resources from a base station to report hybrid automatic repeat request (HARQ) feedback: sending data for disabling HARQ feedback to a second device via a physical sidelink shared channel (PSSCH) based on the SL resources in the SL BWP; generating an ACK related to the sending of data for disabling HARQ feedback; and sending an ACK to the base station based on the UL resources in the UL BWP.

[0281] Fig.21 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown. Fig.21 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0282] Reference Fig.21In step S2110, the base station may send information related to the sidelink (SL) bandwidth part (BWP) to the first device. In step S2120, the base station may send information related to the uplink (UL) BWP to the first device. In step S2130, the base station may send information related to SL resources and information related to UL resources to the first device to report hybrid automatic repeat request (HARQ) feedback. In step S2140, based on the first device sending data for which HARQ feedback is disabled to the second device through the physical sidelink shared channel (PSSCH) based on the SL resources in the SL BWP, the base station may receive an ACK related to the transmission of the data from the first device based on the UL resources in the UL BWP.

[0283] The proposed method can be applied to the devices described in the present disclosure. First, the processor 202 of the base station 200 can control the transceiver 206 to send information related to the sidelink (SL) bandwidth part (BWP) to the first device. In addition, the processor 202 of the base station 200 can control the transceiver 206 to send information related to the uplink (UL) BWP to the first device. In addition, the processor 202 of the base station 200 can control the transceiver 206 to send information related to the SL resources and information related to the UL resources to the first device to report hybrid automatic repeat request (HARQ) feedback. In addition, based on the first device sending data for disabling HARQ feedback to the second device through the physical sidelink shared channel (PSSCH) based on the SL resources in the SL BWP, the processor 202 of the base station 200 can control the transceiver 206 to receive an ACK related to the transmission of data from the first device based on the UL resources in the UL BWP.

[0284] Based on the embodiments of the present disclosure, a base station configured to perform wireless communication may be provided. For example, the base station may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, one or more processors may execute instructions to perform the following operations: sending information related to a sidelink (SL) bandwidth part (BWP) to a first device; sending information related to an uplink (UL) BWP to a first device; sending information related to SL resources and information related to UL resources to a first device to report hybrid automatic repeat request (HARQ) feedback; and sending data for disabling HARQ feedback to a second device based on the SL resources in the SL BWP through a physical sidelink shared channel (PSSCH), and receiving an ACK related to the sending of the data from the first device based on the UL resources in the UL BWP.

[0285] Based on the embodiments of the present disclosure, a device configured to control a base station that performs wireless communication may be provided. For example, the device may include: one or more processors; and one or more memories, which are operatively connected to the one or more processors and store instructions. For example, one or more processors may execute instructions to perform the following operations: sending information related to a sidelink (SL) bandwidth part (BWP) to a first user equipment (UE); sending information related to an uplink (UL) BWP to a first UE; sending information related to SL resources and information related to UL resources to a first UE to report hybrid automatic repeat request (HARQ) feedback; and based on the first UE sending data for disabling HARQ feedback based on the SL resources in the SL BWP to a second UE through a physical sidelink shared channel (PSSCH), receiving an ACK related to the sending of data from the first UE based on the UL resources in the UL BWP.

[0286] Based on the embodiments of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, when the instructions are executed, the base station may perform the following operations: sending information related to a sidelink (SL) bandwidth part (BWP) to a first device; sending information related to an uplink (UL) BWP to a first device; sending information related to SL resources and information related to UL resources to the first device to report hybrid automatic repeat request (HARQ) feedback; and based on the first device sending data for disabling HARQ feedback to a second device through a physical sidelink shared channel (PSSCH) based on the SL resources in the SL BWP, receiving an ACK related to the sending of data from the first device based on the UL resources in the UL BWP.

[0287] Various embodiments of the present disclosure may be combined with each other.

[0288] Hereinafter, devices to which respective embodiments of the present disclosure can be applied will be described.

[0289] The various descriptions, functions, processes, proposals, methods and / or operational flows of the present disclosure described in this document may be applied to, but not limited to, various fields requiring wireless communication / connection between devices (e.g., 5G).

[0290] Hereinafter, a description will be given in more detail with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise described, the same reference numerals may represent the same or corresponding hardware blocks, software blocks or functional blocks.

[0291] Fig. 22 A communication system (1) according to an embodiment of the present disclosure is shown.

[0292] Reference Fig. 22 , a communication system (1) to which various embodiments of the present disclosure are applied includes a wireless device, a base station (BS), and a network. Herein, a wireless device refers to a device that performs communication using a radio access technology (RAT) (e.g., 5G new RAT (NR) or long term evolution (LTE)), and may be referred to as a communication / radio / 5G device. The wireless device may include, but is not limited to, a robot (100a), a vehicle (100b-1, 100b-2), an extended reality (XR) device (100c), a handheld device (100d), a home appliance (100e), an Internet of Things (IoT) device (100f), and an artificial intelligence (AI) device / server (400). For example, a vehicle may include a vehicle with a wireless communication function, an autonomous vehicle, and a vehicle capable of performing inter-vehicle communication. Herein, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). XR devices may include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices and may be implemented in the form of head mounted devices (HMD), head up displays (HUD) installed in vehicles, televisions, smart phones, computers, wearable devices, home appliance devices, digital signage, vehicles, robots, etc. Handheld devices may include smart phones, smart boards, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., notebooks). Home appliances may include TVs, refrigerators, and washing machines. IoT devices may include sensors and smart meters. For example, a BS and a network may be implemented as wireless devices, and a specific wireless device (200a) may operate as a BS / network node relative to other wireless devices.

[0293] Here, in addition to LTE, NR and 6G, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may also include a narrowband Internet of Things for low-power communication. In this case, for example, NB-IoT technology may be an example of a low-power wide area network (LPWAN) technology, and may be implemented as a standard such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may perform communication based on LTE-M technology. In this case, as an example, LTE-M technology may be an example of LPWAN, and may be referred to as various names including enhanced machine type communication (eMTC), etc. For example, LTE-M technology may be implemented as at least any one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE machine type communication and / or 7) LTE M, and is not limited to the above names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may include at least one of Bluetooth, a low power wide area network (LPWAN), and ZigBee considering low power communication, and is not limited to the above names. As an example, the ZigBee technology may generate a personal area network (PAN) related to small / low power digital communication based on various standards including IEEE 802.15.4, etc., and may be referred to as various names.

[0294] The wireless devices 100a to 100f may be connected to the network 300 via the BS 200. The AI ​​technology may be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f may be connected to the AI ​​server 400 via the network 300. The network 300 may be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although the wireless devices 100a to 100f may communicate with each other via the BS 200 / network 300, the wireless devices 100a to 100f may perform direct communication (e.g., side link communication) with each other without passing through the BS / network. For example, the vehicles 100b-1 and 100b-2 may perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). An IoT device (e.g., a sensor) may perform direct communication with other IoT devices (e.g., a sensor) or other wireless devices 100a to 100f.

[0295] Wireless communication / connection 150a, 150b or 150c can be established between wireless devices 100a to 100f / BS200 or BS200 / BS200. Here, the wireless communication / connection can be established through various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication) or inter-BS communication (e.g., relay, integrated access backhaul (IAB)). The wireless device and the BS / wireless device can send / receive radio signals to / from each other through wireless communication / connection 150a and 150b. For example, wireless communication / connection 150a and 150b can send / receive signals through various physical channels. To this end, various configuration information configuration processes for sending / receiving radio signals, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation and resource mapping / demapping) and at least a portion of the resource allocation process can be performed based on various proposals of the present disclosure.

[0296] Fig.23 A wireless device according to an embodiment of the present disclosure is shown.

[0297] Reference Fig.23 , the first wireless device (100) and the second wireless device (200) may transmit radio signals via various RATs (e.g., LTE and NR). Herein, {the first wireless device (100) and the second wireless device (200)} may correspond to Fig. 22 {wireless device (100x) and BS (200)} and / or {wireless device (100x) and wireless device (100x)}.

[0298] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may additionally further include one or more transceivers 106 and / or one or more antennas 108. The (one or more) processors 102 may control the (one or more) memories 104 and / or the (one or more) transceivers 106, and may be configured to implement the descriptions, functions, processes, proposals, methods and / or operation flows disclosed in this document. For example, the (one or more) processors 102 may process the information in the (one or more) memories 104 to generate first information / signals, and then send a radio signal including the first information / signals through the (one or more) transceivers 106. The (one or more) processors 102 may receive a radio signal including a second information / signal through the transceiver 106, and then store the information obtained by processing the second information / signals in the (one or more) memories 104. The (one or more) memories 104 may be connected to the (one or more) processors 102, and may store various information related to the operation of the (one or more) processors 102. For example, (one or more) memories 104 may store software code including commands for executing part or all of the processing controlled by (one or more) processors 102 or for executing the descriptions, functions, processes, proposals, methods and / or operational flows disclosed in this document. Here, (one or more) processors 102 and (one or more) memories 104 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). (One or more) transceivers 106 may be connected to (one or more) processors 102 and transmit and / or receive radio signals through (one or more) antennas (antenna units) 108. Each transceiver 106 may include a transmitter and / or a receiver. (One or more) transceivers 106 may be used interchangeably with (one or more) radio frequency (RF) units. In the present disclosure, a wireless device may represent a communication modem / circuit / chip.

[0299] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may additionally further include one or more transceivers 206 and / or one or more antennas 208. The (one or more) processors 202 may control the (one or more) memories 204 and / or the (one or more) transceivers 206, and may be configured to implement the descriptions, functions, processes, proposals, methods and / or operation flows disclosed in this document. For example, the (one or more) processors 202 may process the information in the (one or more) memories 204 to generate third information / signals, and then transmit a radio signal including the third information / signals through the (one or more) transceivers 206. The (one or more) processors 202 may receive a radio signal including a fourth information / signal through the (one or more) transceivers 106, and then store the information obtained by processing the fourth information / signals in the (one or more) memories 204. The (one or more) memories 204 may be connected to the (one or more) processors 202, and may store various information related to the operation of the (one or more) processors 202. For example, (one or more) memories 204 may store software code including commands for executing part or all of the processing controlled by (one or more) processors 202 or for executing the descriptions, functions, processes, proposals, methods and / or operational flows disclosed in this document. Here, (one or more) processors 202 and (one or more) memories 204 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). (One or more) transceivers 206 may be connected to (one or more) processors 202 and transmit and / or receive radio signals through (one or more) antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. (One or more) transceivers 206 may be used interchangeably with (one or more) RF units. In the present disclosure, a wireless device may represent a communication modem / circuit / chip.

[0300] Below, the hardware elements of the wireless devices 100 and 200 will be described in more detail. One or more protocol layers may be implemented by, but are not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more protocol data units (PDUs) and / or one or more service data units (SDUs) according to the description, function, process, proposal, method, and / or operation flow disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information according to the description, function, process, proposal, method, and / or operation flow disclosed in this document. One or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information according to the description, function, process, proposal, method, and / or operation flow disclosed in this document, and provide the generated signals to one or more transceivers 106 and 206. One or more processors 102 and 202 can receive signals (e.g., baseband signals) from one or more transceivers 106 and 206 and obtain PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operating procedures disclosed in this document.

[0301] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 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 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be included in one or more processors 102 and 202 or stored in one or more memories 104 and 204, thereby being driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be implemented using software or firmware in the form of code, commands, and / or command sets.

[0302] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and may store various types of data, signals, messages, information, programs, codes, instructions, and / or commands. One or more memories 104 and 204 may be composed of read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drive, registers, cash memory, computer-readable storage media, and / or combinations thereof. One or more memories 104 and 204 may be located inside and / or outside one or more processors 102 and 202. One or more memories 104 and 204 may be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0303] One or more transceivers 106 and 206 may send user data, control information, and / or radio signals / channels mentioned in the method and / or operation flow of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information, and / or radio signals / channels mentioned in the description, function, process, proposal, method, and / or operation flow disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202, and may send and receive radio signals. For example, one or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may send user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may receive user data, control information, or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to send and receive user data, control information and / or radio signals / channels mentioned in the description, functions, processes, proposals, methods and / or operation flows disclosed in this document through one or more antennas 108 and 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 and 206 may convert received radio signals / channels, etc. from RF band signals to baseband signals to process received user data, control information, radio signals / channels, etc. using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert user data, control information, radio signals / channels, etc. processed using one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0304] Fig.24 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown.

[0305] Reference Fig.24 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). Fig.24 Operation / function, not limited to Fig.23 The processor (102, 202) and / or the transceiver (106, 206) may be Fig.23The processor (102, 202) and / or the transceiver (106, 206) are implemented Fig.24 For example, you can Fig.23 The processor (102, 202) implements blocks 1010 to 1060. Alternatively, Fig.23 The processor (102, 202) implements blocks 1010 to 1050 and can be implemented by Fig.23 The transceiver (106, 206) is used to implement box 1060.

[0306] Can be through Fig.24 The signal processing circuit (1000) converts the codeword into a radio signal. Herein, the codeword is a coded bit sequence of an information block. The information block may include a transport block (e.g., UL-SCH transport block, DL-SCH transport block). The radio signal may be transmitted through various physical channels (e.g., PUSCH and PDSCH).

[0307] Specifically, the codeword can be converted into a scrambled bit sequence by the scrambler 1010. The scrambling sequence for scrambling can be generated based on an initial value, and the initial value can include the ID information of the wireless device. The scrambled bit sequence can be modulated into a modulation symbol sequence by the modulator 1020. The modulation scheme may include pi / 2-binary phase shift keying (pi / 2-BPSK), m-phase shift keying (m-PSK) and m-quadrature amplitude modulation (m-QAM). The complex modulation symbol sequence can be mapped to one or more transmission layers by the layer mapper 1030. The modulation symbol of each transmission layer can be mapped (precoded) to (one or more) corresponding antenna ports by the precoder 1040. The output z of the precoder 1040 can be obtained by multiplying the output y of the layer mapper 1030 with the N*M precoding matrix W. Here, N is the number of antenna ports and M is the number of transmission layers. The precoder 1040 can perform precoding after performing transform precoding (e.g., DFT) for the complex modulation symbol. Alternatively, the precoder 1040 may perform precoding without performing transform precoding.

[0308] The resource mapper 1050 may map the modulation symbols of each antenna port to time-frequency resources. The time-frequency resources may include multiple symbols in the time domain (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) and multiple subcarriers in the frequency domain. The signal generator 1060 may generate a radio signal from the mapped modulation symbols, and the generated radio signal may be sent to other devices 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), and an up-converter.

[0309] Can be used with Fig.24 The signal processing process for the signal received in the wireless device is configured in a manner opposite to the signal processing process (1010-1060) of the wireless device. Fig.23 100, 200) can receive a radio signal from the outside through an antenna port / transceiver. The received radio signal can be converted into a baseband signal by 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. Next, the baseband signal can be restored to a codeword through a resource demapping process, a post-coding process, a demodulation processor, and a descrambling process. The codeword can be restored to the original information block by decoding. Therefore, a signal processing circuit (not illustrated) for receiving a signal may include a signal restorer, a resource demapper, a post-encoder, a demodulator, a descrambler, and a decoder.

[0310] Fig.25 Another example of a wireless device according to an embodiment of the present disclosure is shown. The wireless device can be implemented in various forms according to use cases / services (see Fig. 22 ).

[0311] Reference Fig.25 , the wireless device (100, 200) may correspond to Fig.23 The wireless devices (100, 200) may be configured by various elements, components, units / portions and / or modules. For example, each of the wireless devices (100, 200) may include a communication unit (110), a control unit (120), a storage unit (130) and additional components (140). The communication unit may include a communication circuit (112) and (one or more) transceivers (114). For example, the communication circuit (112) may include Fig.23 One or more processors (102, 202) and / or one or more memories (104, 204) of the present invention. For example, the transceiver(s) (114) may include Fig.23The control unit (120) is electrically connected to the communication unit (110), the memory unit (130) and the additional components (140), and controls the overall operation of the wireless device. For example, the control unit (120) can control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit (130). The control unit (120) can send the information stored in the memory unit (130) to the outside (e.g., other communication devices) via the communication unit (110) through a wireless / wired interface, or store the information received from the outside (e.g., other communication devices) via the communication unit (110) through a wireless / wired interface in the memory unit (130).

[0312] The additional component (140) may be configured in various ways depending on the type of the wireless device. For example, the additional component (140) may include at least one of a power unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device may be implemented in the following forms without limitation: a robot ( Fig. 22 100a), vehicles ( Fig. 22 100b-1 and 100b-2), XR devices ( Fig. 22 100c), handheld device ( Fig. 22 100d), household appliances ( Fig. 22 100e), IoT devices ( Fig. 22 100f), digital broadcast terminal, hologram device, public safety device, MTC device, medical device, fintech device (or financial device), security device, climate / environmental device, AI server / device ( Fig. 22 400), BS( Fig. 22 200), network nodes, etc. Depending on the use case / service, the wireless device can be used in a mobile or fixed place.

[0313] exist Fig.25In the wireless device (100, 200), all the various elements, components, units / parts and / or modules in the wireless device (100, 200) can be connected to each other through a wired interface, or at least part of them can be connected wirelessly through the communication unit (110). For example, in each of the wireless devices (100, 200), the control unit (120) and the communication unit (110) can be connected by wire, and the control unit (120) and the first unit (e.g., 130, 140) can be connected wirelessly through the communication unit (110). Each element, component, unit / part and / or module in the wireless device (100, 200) can also include one or more elements. For example, the control unit (120) can be constructed by a collection of one or more processors. As an example, the control unit (120) can be constructed by a collection of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing unit and a memory control processor. As another example, the memory unit (130) may be constructed by a random access memory (RAM), a dynamic RAM (DRAM), a read only memory (ROM), a flash memory, a volatile memory, a nonvolatile memory, and / or a combination thereof.

[0314] Hereinafter, the implementation will be described in detail with reference to the accompanying drawings. Fig.25 .

[0315] Fig.26 A handheld device according to an embodiment of the present disclosure is shown. The handheld device may include a smart phone, a smart pad, a wearable device (e.g., a smart watch or smart glasses), or a portable computer (e.g., a notebook). The handheld device may be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT).

[0316] Reference Fig.26 The handheld 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 I / O unit (140c). The antenna unit (108) may be configured as a part of the communication unit (110). Blocks 110 to 130 / 140a to 140c correspond to Fig.25 Frame 110 to 130 / 140.

[0317] The communication unit 110 may send and receive signals (e.g., data signals and control signals) to and from other wireless devices or BSs. The control unit 120 may perform various operations by controlling the constituent elements of the handheld device 100. The control unit 120 may include an application processor (AP). The memory unit 130 may store data / parameters / programs / codes / commands required to drive the handheld device 100. The memory unit 130 may store input / output data / information. The power supply unit 140a may supply power to the handheld device 100 and include a wired / wireless charging circuit, a battery, etc. The interface unit 140b may support the connection of the handheld device 100 to other external devices. The interface unit 140b may include various ports (e.g., audio I / O ports and video I / O ports) for connecting to external devices. The I / O unit 140c may input or output video information / signals, audio information / signals, data and / or information input by a user. The I / O unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker and / or a tactile module.

[0318] For example, in the case of data communication, the I / O unit 140c can obtain information / signals (e.g., touch, text, voice, image, or video) input by the user, and the obtained information / signals can be stored in the memory unit 130. The communication unit 110 can convert the information / signals stored in the memory into radio signals, and directly send the converted radio signals to other wireless devices or to the BS. The communication unit 110 can receive radio signals from other wireless devices or BSs, and then restore the received radio signals to the original information / signals. The restored information / signals can be stored in the memory unit 130, and can be output as various types (e.g., text, voice, image, video, or tactile) through the I / O unit 140.

[0319] Fig. 27 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. The vehicle or autonomous vehicle may be implemented by a mobile robot, a car, a train, a manned / unmanned aerial vehicle (AV), a ship, etc.

[0320] Reference Fig. 27 The vehicle or autonomous vehicle (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a drive unit (140a), a power supply unit (140b), a sensor unit (140c) and an autonomous driving unit (140d). The antenna unit (108) may be configured as a part of the communication unit (110). Blocks 110 / 130 / 140a to 140d correspond to Fig.25 Frame 110 / 130 / 140.

[0321] The communication unit 110 may send and receive signals (e.g., data signals and control signals) to and from external devices such as other vehicles, BSs (e.g., gNBs and roadside units), and servers. The control unit 120 may 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 drive unit 140a may cause the vehicle or autonomous vehicle 100 to travel on the road. The drive unit 140a may include an engine, a motor, a transmission system, wheels, brakes, a steering device, etc. The power supply unit 140b may supply power to the vehicle or autonomous vehicle 100, and may include a wired / wireless charging circuit, a battery, etc. The sensor unit 140c may acquire vehicle status, external environment information, user information, etc. The sensor unit 140c may include an inertial measurement unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, a slope sensor, a weight 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, a lighting sensor, a pedal position sensor, etc. The autonomous driving unit 140d may implement a technology for maintaining a lane in which the vehicle is traveling, a technology for automatically adjusting a speed (e.g., adaptive cruise control), a technology for autonomously driving along a determined path, a technology for driving by automatically setting a path when a destination is set, and the like.

[0322] For example, the communication unit 110 may receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d may generate an autonomous driving path and a driving plan from the acquired data. The control unit 120 may control the drive unit 140a so that the vehicle or the autonomous driving vehicle 100 may move along the autonomous driving path according to the driving plan (e.g., speed / direction control). In the middle of autonomous driving, the communication unit 110 may aperiodically / periodically acquire the most recent traffic information data from an external server and acquire surrounding traffic information data from adjacent vehicles. In the middle of autonomous driving, the sensor unit 140c may acquire vehicle status and / or surrounding environment information. The autonomous driving unit 140d may update the autonomous driving path and driving plan based on the newly acquired data / information. The communication unit 110 may transmit information about the vehicle position, autonomous driving path, and / or driving plan to an external server. The external server may predict traffic information data using AI technology, etc. based on information collected from the vehicle or autonomous driving vehicle, and provide the predicted traffic information data to the vehicle or autonomous driving vehicle.

[0323] The claims in this specification may be combined in various ways. For example, the technical features in the method claims of this specification may be combined to be implemented or performed in a device, and the technical features in the device claims may be combined to be implemented or performed in a method. In addition, the technical features in (one or more) method claims and (one or more) device claims may be combined to be implemented or performed in a device. In addition, the technical features in (one or more) method claims and (one or more) device claims may be combined to be implemented or performed in a method.

Claims

1. A method for performing wireless communication by a communication device, the method comprising the following steps: Receiving information from a network for scheduling PSSCH resources in one or more first SL time slots among the side link SL time slots for physical side link shared channel PSSCH transmission, wherein the SL time slots are related to physical side link feedback channel PSFCH resources, and the number of the SL time slots is M; Performing physical side link shared channel PSSCH transmission in one or more first SL time slots based on the PSSCH resource, wherein PSSCH transmission is not performed in one or more second SL time slots among the SL time slots; Based on one or more receptions through the PSFCH resource, obtain M hybrid automatic repeat request HARQ information bits; Sending information about the M HARQ information bits to the network based on a physical uplink control channel PUCCH resource, The M HARQ information bits include: one or more HARQ information bits for the PSSCH transmission performed in the one or more first SL time slots; and one or more negative acknowledgements NACK for the one or more second SL time slots in which the PSSCH transmission is not performed, and The communication device is configured with a semi-static SL HARQ codebook.

2. The method according to claim 1, wherein: The PSSCH transmissions performed in the one or more first SL time slots include N PSSCH transmissions performed in N SL time slots, The method further comprises receiving information about K SLHARQ feedbacks on the PSFCH resource in response to the N PSSCH transmissions, Wherein, the SL HARQ feedback information for NK PSSCH transmissions is generated as NACK, and Wherein, N and K are positive integers, and N is greater than K.

3. The method according to claim 1, wherein: The PUCCH resources are allocated to the communication device by configuring a grant CG or a dynamic grant DG.

4. A communication device configured to perform wireless communication, the communication device comprising: one or more memories; one or more transceivers; as well as One or more processors connected to the one or more memories and the one or more transceivers, wherein the one or more memories store instructions that, upon being executed by the one or more processors, perform the following operations: Receiving information from a network for scheduling PSSCH resources in one or more first SL time slots among the side link SL time slots for physical side link shared channel PSSCH transmission, wherein the SL time slots are related to physical side link feedback channel PSFCH resources, and the number of the SL time slots is M; Performing physical side link shared channel PSSCH transmission in one or more first SL time slots based on the PSSCH resource, wherein PSSCH transmission is not performed in one or more second SL time slots among the SL time slots; Based on one or more receptions through the PSFCH resource, obtain M hybrid automatic repeat request HARQ information bits; Sending information about the M HARQ information bits to the network based on a physical uplink control channel PUCCH resource, The M HARQ information bits include: one or more HARQ information bits for the PSSCH transmission performed in the one or more first SL time slots; and one or more negative acknowledgements NACK for the one or more second SL time slots in which the PSSCH transmission is not performed, and The communication device is configured with a semi-static SL HARQ codebook.

5. A device configured to control a user equipment UE performing wireless communication, the device comprising: one or more processors; as well as one or more memories operatively connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to perform the following operations: Receiving information from a network for scheduling PSSCH resources in one or more first SL time slots among the side link SL time slots for physical side link shared channel PSSCH transmission, wherein the SL time slots are related to physical side link feedback channel PSFCH resources, and the number of the SL time slots is M; Performing physical side link shared channel PSSCH transmission in one or more first SL time slots based on the PSSCH resource, wherein PSSCH transmission is not performed in one or more second SL time slots among the SL time slots; Based on one or more receptions through the PSFCH resource, obtain M hybrid automatic repeat request HARQ information bits; Sending information about the M HARQ information bits to the network based on a physical uplink control channel PUCCH resource, The M HARQ information bits include: one or more HARQ information bits for the PSSCH transmission performed in the one or more first SL time slots; and one or more negative acknowledgements NACK for the one or more second SL time slots in which the PSSCH transmission is not performed, and The device is configured with a semi-static SL HARQ codebook.

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