Method and apparatus for determining priority of UL transmission in NR V2X

Abstract

A method for performing wireless communication by a first device and a device supporting the method. The method may include the following steps: sending at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) associated with at least one PSCCH to a second device; receiving at least one sidelink (SL) hybrid automatic repeat request (HARQ) feedback information from the second device via at least one physical sidelink feedback channel (PSFCH) associated with at least one PSSCH; and determining a priority value for physical uplink control channel (PUCCH) transmission for reporting at least one SL HARQ feedback information to a base station based on the priority value of at least one SL HARQ feedback information.

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, objects equipped with infrastructure, etc. 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, the UE can report SL HARQ feedback information to the base station via PUCCH. In this case, the UE needs to determine the priority of PUCCH transmission.

[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: sending at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) related to the at least one PSCCH to a second device; receiving at least one sidelink (SL) hybrid automatic repeat request (HARQ) feedback information from the second device through at least one physical sidelink feedback channel (PSFCH) related to the at least one PSSCH; and determining a priority value for a physical uplink control channel (PUCCH) transmission for reporting the at least one SL HARQ feedback information to a base station based on at least one priority value of the at least one SL HARQ feedback information.

[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: sending at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) associated with the at least one PSCCH to a second device; receiving at least one sidelink (SL) hybrid automatic repeat request (HARQ) feedback information from the second device through at least one physical sidelink feedback channel (PSFCH) associated with the at least one PSSCH; and determining a priority value for a physical uplink control channel (PUCCH) transmission for reporting the at least one SL HARQ feedback information to a base station based on at least one priority value of the at least one SL HARQ feedback information.

[0019] Beneficial Effects

[0020] The 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 2The 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 A synchronization source or synchronization reference of V2X based on an embodiment of the present disclosure is shown.

[0033] Fig.13 The resource unit used for CBR measurement according to the embodiment of the present disclosure is shown.

[0034] Fig.14 A process in which a UE according to an embodiment of the present disclosure performs channel transmission and / or channel reception based on priority is shown.

[0035] Fig.15 A process for a TX UE to report SL HARQ feedback information to a base station based on an embodiment of the present disclosure is shown.

[0036] Fig.16 An example of resource allocation based on CG type 1 or CG type 2 based on an embodiment of the present disclosure is shown.

[0037] Fig.17 A process for a TX UE to report SL HARQ feedback information to a base station based on an embodiment of the present disclosure is shown.

[0038] Fig.18 A process for a TX UE to report SL HARQ feedback information to a base station based on an embodiment of the present disclosure is shown.

[0039] Fig.19 A method for a TX UE to report SL HARQ feedback information to a base station when the TX UE performs SL transmission by not using resources within a specific period based on an embodiment of the present disclosure is shown.

[0040] Fig. 20 A method for a first device to perform power control related to channel transmission according to an embodiment of the present disclosure is shown.

[0041] Fig.21 A method for a base station to receive information about SL HARQ feedback based on an embodiment of the present disclosure is shown.

[0042] Fig. 22 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown.

[0043] Fig.23 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown.

[0044] Fig.24 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown.

[0045] Fig.25 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown.

[0046] Fig.26 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown.

[0047] Fig. 27 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown.

[0048] Fig.28 A communication system 1 according to an embodiment of the present disclosure is shown.

[0049] Fig.29 A wireless device according to an embodiment of the present disclosure is shown.

[0050] Fig.30 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown.

[0051] Fig.31 A wireless device according to an embodiment of the present disclosure is shown.

[0052] Fig.32 A handheld device according to an embodiment of the present disclosure is shown.

[0053] Fig.33 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0054] 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".

[0055] 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".

[0056] 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".

[0057] 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".

[0058] 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".

[0059] The technical features described in each of the drawings in this specification may be implemented separately or simultaneously.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] Figure 2 The embodiment of the present invention illustrates a case where only gNB is included. BS 20 may be connected to each other via an Xn interface. BS 20 may be connected to each other via a fifth generation (5G) core network (5GC) and an NG interface. More specifically, BS 20 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.

[0066] Figure 3 The functional division between NG-RAN and 5GC according to an embodiment of the present disclosure is shown.

[0067] 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.

[0068] 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.

[0069] Figure 4 A radio protocol architecture according to an embodiment of the present disclosure is shown. Figure 4The 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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).

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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).

[0084] 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).

[0085] 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 ).

[0086] [Table 1]

[0087] <![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

[0088] 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.

[0089] [Table 2]

[0090] <![CDATA[SCS(15*2 μ )]]> <![CDATA[N slot symb ]]> <![CDATA[N frame,μ slot ]]> <![CDATA[N subframe,μ slot ]]> 60KHz(μ=2) 12 40 4

[0091] 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.

[0092] 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.

[0093] 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).

[0094] [Table 3]

[0095] Frequency range specification Corresponding frequency range Subcarrier Spacing (SCS) FR1 450MHz–6000MHz 15, 30, 60kHz FR2 24250MHz–52600MHz 60, 120, 240kHz

[0096] 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).

[0097] [Table 4]

[0098] Frequency range specification Corresponding frequency range Subcarrier Spacing (SCS) FR1 410MHz–7125MHz 15, 30, 60kHz FR2 24250MHz–52600MHz 60, 120, 240kHz

[0099] Figure 6 The structure of the time slot of the NR frame according to an embodiment of the present disclosure is shown.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] Hereinafter, the bandwidth part (BWP) and the carrier will be described in detail.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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 Uu BWP. 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] Hereinafter, V2X or SL communication will be described.

[0113] 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.

[0114] Next, the side link synchronization signal (SLSS) and the synchronization information will be described in detail.

[0115] 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.

[0116] 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).

[0117] 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.

[0118] 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.

[0119] 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 signals 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] Hereinafter, resource allocation in SL will be described.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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).

[0128] 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.

[0129] 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.

[0130] Fig.12 A synchronization source or synchronization reference of V2X according to an embodiment of the present disclosure is shown. Fig.12 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0131] Reference Fig.12 In V2X, the UE can synchronize directly with the Global Navigation Satellite System (GNSS), or can synchronize indirectly with the GNSS through a UE that synchronizes directly with the GNSS (within or outside the network coverage). If the GNSS is configured as a synchronization source, the UE can calculate the Direct Frame Number (DFN) and subframe number by using the Coordinated Universal Time (UTC) and a (pre-)configured Direct Frame Number (DFN) offset.

[0132] Alternatively, the UE may be synchronized directly with the BS, or may be synchronized with another UE that is time / frequency synchronized with the BS. For example, the BS may be an eNB or a gNB. For example, when the UE is within network coverage, the UE may receive synchronization information provided by the BS and may be synchronized directly with the BS. Thereafter, the UE may provide synchronization information to another adjacent UE. If the BS timing is configured based on synchronization, the UE may rely on a cell associated with the corresponding frequency (when it is within cell coverage at that frequency) or a primary cell or serving cell (when it is outside cell coverage at that frequency) for synchronization and downlink measurements.

[0133] The BS (e.g., serving cell) may provide a synchronization configuration for a carrier used for V2X or SL communication. In this case, the UE may conform to the synchronization configuration received from the BS. If the UE cannot detect any cell in the carrier used for V2X or SL communication and cannot receive a synchronization configuration from the serving cell, the UE may conform to the pre-configured synchronization configuration.

[0134] Alternatively, the UE may be synchronized with another UE that cannot obtain synchronization information directly or indirectly from the BS or GNSS. The synchronization source or preference may be pre-configured for the UE. Alternatively, the synchronization source and preference may be configured through a control message provided by the BS.

[0135] The SL synchronization source may be associated / correlated with the synchronization priority. For example, the relationship between the synchronization source and the synchronization priority may be defined as shown in Table 5 or Table 6. Table 5 or Table 6 is for exemplary purposes only, and the relationship between the synchronization source and the synchronization priority may be defined in various forms.

[0136] [Table 5]

[0137] Priority Level GNSS-based synchronization eNB / gNB-based synchronization P0 GNSS BS P1 All UEs synchronized directly with GNSS All UEs synchronized directly with the BS P2 All UEs that are indirectly synchronized with GNSS All UEs that are indirectly synchronized with the BS P3 All other UEs GNSS P4 N / A All UEs synchronized directly with GNSS P5 N / A All UEs that are indirectly synchronized with GNSS P6 N / A All other UEs

[0138] [Table 6]

[0139] Priority Level GNSS-based synchronization eNB / gNB-based synchronization P0 GNSS BS P1 All UEs synchronized directly with GNSS All UEs synchronized directly with the BS P2 All UEs that are indirectly synchronized with GNSS All UEs that are indirectly synchronized with the BS P3 BS GNSS P4 All UEs synchronized directly with the BS All UEs synchronized directly with GNSS P5 All UEs that are indirectly synchronized with the BS All UEs that are indirectly synchronized with GNSS P6 Other UEs with low priority Other UEs with low priority

[0140] In Table 5 or Table 6, P0 may represent the highest priority, and P6 may represent the lowest priority. In Table 5 or Table 6, the BS may include at least one of a gNB and an eNB.

[0141] It may be (pre-)configured whether GNSS based synchronization or BS based synchronization is used.In single carrier operation, the UE may derive the UE's transmit timing from the highest priority available synchronization reference.

[0142] Hereinafter, a hybrid automatic repeat request (HARQ) process will be described.

[0143] 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.

[0144] 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.

[0145] 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).

[0146] 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.

[0147] 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.

[0148] (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.

[0149] (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.

[0150] 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.

[0151] 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.

[0152] For example, when SL HARQ feedback is enabled for groupcast, 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).

[0153] 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 transmitting 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 transmitting UE. For example, the transmitting UE may inform the receiving UE of the location of the transmitting UE via 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 transmitting 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] For example, if a transmitting UE sends a PSSCH to a 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.

[0158] For example, if the receiving UE sends HARQ feedback on the PSFCH resource in response to a PSSCH sent by the transmitting UE to the receiving UE, the receiving UE may determine the frequency domain and / or code domain of the PSFCH resource based on an implicit mechanism in the configured resource pool. For example, the receiving UE may determine the frequency domain and / or code domain of the PSFCH resource based on at least one of a timeslot index associated with the PSCCH / PSSCH / PSFCH, a subchannel associated with the PSCCH / PSSCH, or an identifier for each receiving UE in a group for identifying HARQ feedback based on multicast option 2. Additionally / alternatively, for example, the receiving UE may determine the frequency domain and / or code domain of the PSFCH resource based on at least one of SL RSRP, SINR, L1 source ID, and / or location information.

[0159] 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.

[0160] 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.

[0161] Hereinafter, secondary link (SL) congestion control will be described.

[0162] If the UE autonomously determines the SL transmission resources, the UE also autonomously determines the size and frequency of use of the resources for use by the UE. Of course, due to constraints from the network, etc., the use of resource sizes or usage frequencies greater than or equal to a certain level may be limited. However, if all UEs use a relatively large amount of resources in a situation where many UEs are concentrated in a specific area at a specific time, the overall performance may be significantly degraded due to mutual interference.

[0163] Therefore, the UE may need to observe the channel situation. If it is determined that an excessive amount of resources are consumed, it is preferred that the UE autonomously reduce the use of resources. In the present disclosure, this can be defined as congestion control (CR). For example, the UE can determine whether the energy measured in the unit time / frequency resource is greater than or equal to a specific level, and can adjust the amount and frequency of use of its transmission resources based on the ratio of the unit time / frequency resources in which the energy greater than or equal to the specific level is observed. In the present disclosure, the ratio of the time / frequency resources in which the energy greater than or equal to the specific level is observed can be defined as the channel busy ratio (CBR). The UE can measure the CBR of the channel / frequency. In addition, the UE can send the measured CBR to the network / BS.

[0164] Fig.13 The resource unit used for CBR measurement according to the embodiment of the present disclosure is shown. Fig.13 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0165] Reference Fig.13 As a result of the UE measuring RSSI based on the subchannel within a specific period (e.g., 100 ms), the CBR may indicate the number of subchannels in which the measurement result value of the received signal strength indicator (RSSI) has a value greater than or equal to a preconfigured threshold. Alternatively, the CBR may indicate the ratio of subchannels having a value greater than or equal to the preconfigured threshold among the subchannels within a specific duration. For example, Fig.13 In an embodiment of the present invention, if it is assumed that a shadowed subchannel is a subchannel having a value greater than or equal to a preconfigured threshold, the CBR may represent a ratio of shadowed subchannels within a 100 ms period. In addition, the CBR may be reported to the BS.

[0166] In addition, congestion control that takes into account the priority of the service (e.g., packet) may be necessary. To this end, for example, the UE may measure the channel occupancy ratio (CR). Specifically, the UE may measure the CBR, and the UE may determine the maximum value CRlimitk of the channel occupancy k (CRk) that may be occupied by the traffic corresponding to each priority (e.g., k) based on the CBR. For example, the UE may derive the maximum value CRlimitk of the channel occupancy related to the priority of each traffic based on a predetermined table of CBR measurements. For example, in the case of a service with a relatively high priority, the UE may derive a relatively large maximum value of the channel occupancy. Thereafter, the UE may perform congestion control by limiting the sum of the channel occupancies of the traffic whose priority k is lower than i to a value less than or equal to a specific value. Based on this method, the channel occupancy may be more strictly limited for services with relatively low priorities.

[0167] In addition to this, the UE can perform SL congestion control by using adjusting the transmit power level, discarding packets, determining whether to perform retransmission, adjusting the transmit RB size (MCS coordination), etc.

[0168] 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 SLRLM operation and / or SL RFL operation of a (target) RX UE.

[0169] 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.

[0170] In addition, in the present disclosure, for example, the TX UE may send at least one of the following information to the RXUE through the SCI. Herein, for example, the TX UE may send at least one of the following information to the RXUE through the first SCI and / or the second SCI.

[0171] -PSSCH (and / or PSCCH) related resource allocation information (e.g., location / number of time / frequency resources, resource reservation information (e.g., time period))

[0172] -SL CSI report request indicator or SL (L1) RSRP (and / or SL (L1) RSRQ and / or SL (L1) RSSI) report request indicator

[0173] -SL CSI transmission indicator (or SL (L1) RSRP (and / or SL (L1) RSRQ and / or SL (L1) RSSI) information transmission indicator) (on PSSCH)

[0174] - Modulation and Coding Scheme (MCS) information

[0175] -TX power information

[0176] - L1 destination ID information and / or L1 source ID information

[0177] -SL HARQ process ID information

[0178] -New Data Indicator (NDI) information

[0179] - Redundancy Version (RV) information

[0180] -QoS information (for example, priority information) (related to the transmission service / packet)

[0181] - Information on the number of antenna ports used for (transmitting) SL CSI-RS or SL CSI-RS transmission indicator

[0182] - The location (or distance range) information of the target RX UE (for which SL HARQ feedback is requested) or the TX UE location information

[0183] - 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.

[0184] 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.

[0185] 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".

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] In addition, in the present disclosure, a channel may be replaced / replaced with a signal, or 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 playing may be replaced / replaced with at least one of unicast, multicast and / or broadcast, or vice versa. For example, the playing type may be replaced / replaced with at least one of unicast, multicast and / or broadcast, or vice versa.

[0191] 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.

[0192] Furthermore, in the present disclosure, a high priority may mean a small priority value, and a low priority may mean a large priority value. For example, Table 7 shows an example of priority.

[0193] [Table 7]

[0194] Service or logical channel Priority value Service A or Logical Channel A 1 Service B or logical channel B 2 Service C or logical channel C 3

[0195] Referring to Table 7, for example, service A or logical channel A associated with the smallest priority value may have the highest priority. For example, service C or logical channel C associated with the largest priority value may have the lowest priority.

[0196] Based on various embodiments of the present disclosure, a method for a UE to perform power control based on priority and a device supporting the method will be described.

[0197] Fig.14 A process in which a UE according to an embodiment of the present disclosure performs channel transmission and / or channel reception based on priority is shown. Fig.14 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0198] Reference Fig.14 , in step S1410, the UE may determine the priority associated with channel transmission and / or channel reception. For example, if the transmission of multiple channels performed by the UE partially or completely overlaps in the time domain on the same carrier / frequency or different carriers / frequencies, the UE may consider or determine the transmission and / or reception of channels that satisfy at least one condition in options 1-1 to 1-13 as a relatively high priority. Or, for example, if the transmission of multiple channels and / or the reception of multiple channels performed by the UE partially or completely overlaps in the time domain on the same carrier / frequency or different carriers / frequencies, the UE may consider or determine the transmission and / or reception that satisfies at least one condition in options 1-1 to 1-13 as a relatively high priority.

[0199] 1) Option 1-1: at least one of sending a channel related to a message with a relatively high priority value related to a service and / or QoS, receiving a channel related to a message with a relatively high priority value related to a service and / or QoS, sending a channel related to a message with a relatively low latency requirement, receiving a channel related to a message with a relatively low latency requirement, sending a channel related to a message with a relatively high reliability requirement, receiving a channel related to a message with a relatively high reliability requirement, sending a channel related to a message with a relatively long minimum communication (reach) distance requirement, and / or receiving a channel related to a message with a relatively long minimum communication (reach) distance requirement

[0200] 2) Option 1-2: at least one of sending of an LTE SL channel, sending of an LTE SL channel on a master cell group (MCG) or a secondary cell group (SCG), sending of an LTE Uu channel, sending of an LTE Uu channel on an MCG or SCG, sending of an NR SL channel, sending of an NR SL channel on an MCG or SCG, sending of an NR Uu channel, sending of an NR Uu channel on an MCG or SCG, receiving of an LTE SL channel, receiving of an LTE SL channel on an MCG or SCG, receiving of an LTE Uu channel, receiving of an LTE Uu channel on an MCG or SCG, receiving of an NR SL channel, receiving of an NR SL channel on an MCG or SCG, receiving of an NR Uu channel, and / or receiving of an NR Uu channel on an MCG or SCG

[0201] 3) Option 1-3: at least one of transmission of Uu channel, reception of Uu channel, transmission of SL channel and / or reception of SL channel

[0202] 4) Option 1-4: at least one of sending or receiving a preconfigured channel, sending or receiving a preconfigured channel, sending or receiving a preconfigured SL channel, sending or receiving a preconfigured Uu channel, and / or receiving a preconfigured Uu channel (e.g., at least one of sending or receiving a synchronization signal, sending or receiving a HARQ feedback channel, sending or receiving a CSI feedback channel, sending or receiving an RSRP feedback channel, and / or sending or receiving a PRACH)

[0203] 5) Option 1-5: Transmission of a randomly selected channel and / or Reception of a randomly selected channel

[0204] 6) Option 1-6: at least one of transmission of a channel on a carrier / frequency or resource pool with a relatively small index, reception of a channel on a carrier / frequency or resource pool with a relatively small index, transmission of a channel on a carrier / frequency or resource pool with a relatively large index, reception of a channel on a carrier / frequency or resource pool with a relatively large index, transmission of a channel on a preconfigured specific carrier / frequency or preconfigured specific resource pool, and / or reception of a channel on a preconfigured specific carrier / frequency or preconfigured specific resource pool

[0205] 7) Option 1-7: Channel Transmission and / or Channel Reception

[0206] 8) Option 1-8: at least one of sending a channel associated with a preconfigured playback type, receiving a channel associated with a preconfigured playback type, sending a channel associated with a preconfigured destination UE, receiving a channel associated with a preconfigured destination UE, sending a channel associated with a preconfigured (L1 or L2) destination ID, receiving a channel associated with a preconfigured (L1 or L2) destination ID, sending a channel associated with a preconfigured (L1 or L2) source ID, receiving a channel associated with a preconfigured (L1 or L2) source ID, sending a channel associated with a preconfigured service type, receiving a channel associated with a preconfigured service type, sending a channel associated with a preconfigured QoS parameter, and / or receiving a channel associated with a preconfigured QoS parameter

[0207] 9) Option 1-9: at least one of transmission of a resource pool or a channel on a carrier / frequency having a relatively high congestion level (e.g., CBR), reception of a resource pool or a channel on a carrier / frequency having a relatively high congestion level, transmission of a resource pool or a channel on a carrier / frequency having a relatively low congestion level, reception of a resource pool or a channel on a carrier / frequency having a relatively low congestion level, transmission of a resource pool or a channel on a carrier / frequency having a relatively high channel occupancy ratio (CR), reception of a resource pool or a channel on a carrier / frequency having a relatively high channel occupancy ratio, transmission of a resource pool or a channel on a carrier / frequency having a relatively low channel occupancy ratio, and / or reception of a resource pool or a channel on a carrier / frequency having a relatively low channel occupancy ratio

[0208] 10) Option 1-10: Transmission of channels requiring relatively high power

[0209] 11) Option 1-11: at least one of transmission of a channel associated with Mode 1 operation, reception of a channel associated with Mode 1 operation, transmission of a channel associated with Mode 2 operation, and / or reception of a channel associated with Mode 2 operation

[0210] 12) Option 1-12: at least one of sending a channel related to initial transmission of a TB, receiving a channel related to initial transmission of a TB, sending a channel related to retransmission of a TB, and / or receiving a channel related to retransmission of a TB

[0211] 13) Option 1-13: Transmission of a channel having a relatively high (associated) logical channel priority value and / or Reception of a channel having a relatively high (associated) logical channel priority value

[0212] In step S1420, the UE may perform channel transmission and / or channel reception based on the priority.

[0213] For example, the transmission of multiple channels performed by the UE may partially or completely overlap in the time domain on the same carrier / frequency. Alternatively, the transmission of multiple channels and / or the reception of multiple channels performed by the UE may partially or completely overlap in the time domain on the same carrier / frequency. Hereinafter, for the convenience of description, the above situation may be referred to as situation A. Based on the embodiments of the present disclosure, in the case of situation A, the UE may be configured to omit / skip the transmission and / or reception of channels associated with relatively low priorities. For example, the UE may only perform the transmission and / or reception of channels associated with relatively high priorities.

[0214] For example, the transmission of multiple channels performed by the UE may be partially or completely overlapped in the time domain on different carriers / frequencies within the band. Alternatively, the transmission of multiple channels and / or the reception of multiple channels performed by the UE may be partially or completely overlapped in the time domain on different carriers / frequencies within the band. Hereinafter, for the convenience of description, the above situation may be referred to as situation B. Based on the embodiments of the present disclosure, in the case of situation B, the UE may be configured to omit / skip the transmission and / or reception of channels associated with relatively low priorities. For example, the UE may only perform the transmission and / or reception of channels associated with relatively high priorities.

[0215] For example, the transmission of multiple channels performed by the UE may partially or completely overlap in the time domain on different carriers / frequencies within or between bands. Hereinafter, for the convenience of description, the above situation may be referred to as situation C. Based on the embodiments of the present disclosure, in the case of situation C, the UE may allocate the required power starting from the transmission of the channel associated with a relatively high priority, and the UE may allocate the remaining transmit power (once) to the transmission of the channel associated with the next higher priority in descending order of priority. For example, if the sum of the powers required for the multiple channels transmitted simultaneously is greater than the maximum transmit power of the UE, the UE may allocate the required power starting from the transmission of the channel associated with a relatively high priority, and the UE may allocate the remaining transmit power to the transmission of the channel associated with the next higher priority in descending order of priority. For example, the multiple channels transmitted simultaneously may be multiple channels transmitted simultaneously by frequency division multiplexing (FDM). For example, the multiple channels transmitted simultaneously may be multiple channels transmitted simultaneously in different frequency domains.

[0216] For example, in at least one of case A, case B, and / or case C, if the transmission and / or reception of multiple channels associated with messages having the same priority value related to services and / or QoS overlap partially or completely in the time domain, the UE may determine or consider the transmission or reception of a channel satisfying at least one of options 1-1 to 1-13 as a relatively high priority. In addition, for example, the UE may omit / skip the transmission or reception of a channel associated with a relatively low priority. For example, in case A and / or case B, the UE may omit / skip the transmission or reception of a channel associated with a relatively low priority. For example, the UE may only perform transmission or reception of a channel associated with a relatively high priority.

[0217] For example, in at least one of case A, case B and / or case C, if the transmission of multiple channels associated with messages having the same priority value related to services and / or QoS overlaps partially or completely in the time domain, the UE may determine or consider the transmission of a channel that satisfies at least one of options 1-1 to 1-13 as a relatively high priority. In addition, for example, the UE may allocate power for the transmission of multiple channels. For example, in case C, the UE may allocate the required power starting from the transmission of a channel associated with a relatively high priority, and the UE may allocate the remaining transmit power (in sequence) to the transmission of a channel associated with the next higher priority in descending order of priority. For example, if the sum of the powers required for multiple channels transmitted simultaneously is greater than the maximum transmit power of the UE, the UE may allocate the required power starting from the transmission of a channel associated with a relatively high priority, and the UE may allocate the remaining transmit power (in sequence) to the transmission of a channel associated with the next higher priority in descending order of priority.

[0218] For example, for the transmission and / or reception of multiple channels associated with the same priority, the UE may determine or consider the transmission and / or reception of a channel that satisfies at least one of options 1-1 to 1-13 as the transmission and / or reception of a channel with a relatively high priority. For example, for the transmission and / or reception of multiple channels associated with the same priority, in order to break the deadlock (TIE-BREAKING), the UE may determine or consider the transmission and / or reception of a channel that satisfies at least one of options 1-1 to 1-13 as the transmission and / or reception of a channel with a relatively high priority. Therefore, for the transmission and / or reception of multiple channels associated with the same priority, the UE can finally determine the priority of transmission and / or reception. In addition, for example, the UE may omit / skip the transmission and / or reception of a channel with a low priority, or may perform the transmission and / or reception of a channel with only a high priority. Alternatively, for example, the UE may preferentially allocate power to the transmission of a channel with a high priority. Alternatively, for example, for the transmission of multiple channels associated with the same priority, the UE may allocate (remaining) transmission power at the same ratio. For example, in case C, for transmission of multiple channels associated with the same priority, the UE may allocate (remaining) transmit power at the same ratio. Alternatively, for example, transmission and / or reception of multiple channels associated with the same priority may be handled by the UE implementation.

[0219] In addition, for example, in the case of transmission of a channel associated with at least one of types 1 to 6, it may be difficult for the UE to determine an associated logical channel priority (LCP) value. For example, in the case of transmission of a channel associated with at least one of types 1 to 6, it may be difficult for the UE to directly determine the priority of the associated logical channel.

[0220] 1) Type 1: PUCCH used by the UE to send HARQ feedback information for PDSCH to the base station

[0221] 2) Type 2: PUCCH used by the UE to send CSI information related to DL communication to the base station

[0222] 3) Type 3: At least one of a PUSCH for a UE to send only (non-periodic) CSI information related to DL communication to a base station, a PUSCH for a UE to send only HARQ feedback information for a PDSCH to a base station, and / or a PUSCH for a UE to send only (non-periodic) CSI information related to DL communication and HARQ feedback information for a PDSCH to a base station

[0223] 4) Type 4: Sounding Reference Signal (SRS) sent by the UE to the base station so that the base station can estimate the UL channel

[0224] 5) Type 5: at least one of a PUCCH for a mode 1 TX UE to report only SL HARQ feedback information to a base station, a PUCCH for a mode 1 TX UE to report only SL HARQ feedback information received from an RX UE to a base station, a PUCCH for a mode 1 TX UE to send SL HARQ feedback information to a base station, a PUCCH for a mode 1 TX UE to send CSI information related to DL communication to a base station, and / or a PUCCH for a mode 1 TX UE to send HARQ feedback information for a PDSCH to a base station

[0225] 6) Type 6: At least one of a PUSCH for a mode 1 TX UE to report only SL HARQ feedback information to a base station, a PUSCH for a mode 1 TX UE to send SL HARQ feedback information to a base station, a PUSCH for a mode 1 TX UE to send (non-periodic) CSI information related to DL communication to a base station, and / or a PUSCH for a mode 1 TX UE to send HARQ feedback information for a PDSCH to a base station

[0226] Therefore, the UE needs to specify / derive / determine the LCP value or priority value associated with the above-mentioned type of channel. For example, after the UE determines the LCP value or priority value associated with the above-mentioned type of channel, the UE can perform a logical channel prioritization (LCP) process. For example, the LCP process can be performed by the MAC layer of the UE. For example, the LCP process can include: the UE selects a logical channel and allocates resources to the logical channel based on the priority of the logical channel. For example, the UE can generate a MAC PDU based on the priority of each logical channel and the type of the MAC control element (CE). In addition, for example, the MAC layer of the UE can deliver the MAC PDU to the physical layer of the UE. In addition, for example, the physical layer of the UE can generate a packet by adding a CRC to the MAC PDU. In addition, for example, the physical layer of the UE can perform channel coding and modulation for the packet. In addition, for example, the physical layer of the UE can convert the packet into a radio signal and send it.

[0227] Based on various embodiments of the present disclosure, the UE can efficiently perform a transmission / reception skipping operation and / or a power allocation operation based on the above priorities.

[0228] Fig.15 The process of the TX UE reporting SL HARQ feedback information to the base station based on the embodiment of the present disclosure is shown. Fig.15 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0229] Reference Fig.15, in step S1510, the base station may send information related to SL resources and information related to UL resources to the TX UE. For example, in the case of resource allocation based on CG type 1, the base station may allocate / configure SL resources and UL resources to the TX UE through an RRC message. For example, in the case of resource allocation based on CG type 2, the base station may allocate / configure SL resources and UL resources to the TX UE through an RRC message and DCI. For example, in the case of DG-based resource allocation, the base station may allocate / configure SL resources and UL resources to the TX UE through DCI. For example, SL resources may be resources related to PSCCH transmission and / or PSSCH transmission. For example, UL resources may be resources related to PUCCH transmission. For example, UL resources may be resources related to PUSCH transmission.

[0230] Fig.16 An example of resource allocation based on CG type 1 or CG type 2 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.

[0231] Reference Fig.16 , the base station can allocate periodic resources to the TX UE via DCI and / or RRC messages related to the CG.

[0232] Return to reference Fig.15 In step S1520, the TX UE may send a PSCCH to the RX UE based on information related to the SL resources. In step S1530, the TX UE may send a PSSCH related to the PSCCH to the RX UE.

[0233] In step S1540, the TX UE may receive SL HARQ feedback information from the RX UE via the PSFCH associated with the PSSCH. For example, the TX UE and the RX UE may determine a PSFCH resource associated with the PSSCH, and the TX UE may receive SL HARQ feedback from the RX UE on the PSFCH resource.

[0234] In step S1550, the TX UE may send SL HARQ feedback information to the base station. In this document, for example, if the TX UE receives the SL HARQ feedback information from the RX UE, the SL HARQ feedback information may be the SL HARQ feedback information received from the RX UE. For example, if the TX UE receives the SL HARQ feedback information from the RX UE, the SL HARQ feedback information may be the HARQ feedback information generated by the TX UE based on the SL HARQ feedback information received from the RX UE. For example, if the TX UE does not receive the SL HARQ feedback information from the RX UE, the SL HARQ feedback information may be the HARQ feedback information generated by the TX UE.

[0235] Hereinafter, a method in which the TX UE reports the SL HARQ feedback information to the base station will be described in more detail.

[0236] Fig.17 The process of the TX UE reporting SL HARQ feedback information to the base station based on the 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.

[0237] Reference Fig.17 In step S1710, the TX UE may send sidelink information to the RX UE. For example, the TX UE may be a mode 1 TX UE. For example, the sidelink information may be sent via the PSSCH and / or the PSCCH. For example, 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).

[0238] In step S1720, the TX UE may receive SL HARQ feedback information for the side link information from the RX UE. For example, the SL HARQ feedback information may be received through the PSFCH.

[0239] In step S1730, the TX UE may determine the priority of the first channel through which the SL HARQ feedback information is sent. For example, the first channel may include a PUCCH and / or a PUSCH. In addition, for example, the TX UE may perform power control for transmission of the first channel based on the priority. For example, in at least one of case A, case B, and / or case C, if the transmission and / or reception of multiple channels associated with messages having the same priority overlap partially or completely in the time domain, the TX UE may determine or consider the transmission or reception of a channel that satisfies at least one of options 1-1 to 1-13 as a relatively high priority.

[0240] For example, in the case of channels associated with type 5 and / or type 6, the TX UE may know the priority of the sidelink information associated with each SL HARQ feedback information. For example, the priority may be a service-related priority and / or a QoS-related priority.

[0241] For example, the TX UE may select or determine or consider the minimum value among the priority values ​​of the side link information associated with the SL HARQ feedback information sent through the first channel as the priority of the transmission of the first channel. For example, the TX UE may send at least one PSSCH to the RX UE, and the TX UE may receive at least one SL HARQ feedback information from the RX UE through at least one PSFCH associated with the at least one PSSCH. In this case, each priority value of the at least one SL HARQ feedback information may be the same as each priority value of the at least one PSSCH transmission. Thereafter, the TX UE may send at least one SL HARQ feedback information to the base station through the PUCCH. In this case, the priority value of the PUCCH transmission including the at least one SL HARQ feedback information may be the minimum value among the priority values ​​of the at least one SL HARQ feedback information. For example, the TX UE may determine the priority value of the PUCCH transmission including the at least one SL HARQ feedback information based on Table 8.

[0242] [Table 8]

[0243]

[0244] For example, the TX UE may select or determine or consider the maximum value among the priority values ​​of the side link information associated with the SL HARQ feedback information sent through the first channel as the priority of transmission of the first channel. For example, the TX UE may select or determine or consider the average value of the priority values ​​of the side link information associated with the SL HARQ feedback information sent through the first channel as the priority of transmission of the first channel. For example, the TX UE may select or determine or consider the weighted average value of the priority values ​​of the side link information associated with the SL HARQ feedback information sent through the first channel as the priority of transmission of the first channel.

[0245] For example, the proposed method can be restrictively applied only when the TX UE actually sends (at least one) side link information to the RX UE. For example, the proposed method can be restrictively applied only when the PUCCH through which the SL HARQ feedback information is reported and the PUCCH through which the HARQ feedback information for the PSDCH is reported are transmitted based on time division multiplexing (TDM). For example, the proposed method can be restrictively applied only when the SL HARQ feedback information and the HARQ feedback information for the PSSCH are not multiplexed in the same PUCCH.

[0246] In step S1740, the TX UE may report the SL HARQ feedback information to the base station through the first channel. For example, the TX UE may report the SL HARQ feedback information to the base station through the first channel by using the transmission power allocated for the transmission of the first channel.

[0247] For example, if the priority associated with the transmission of the first channel is relatively low compared to other transmissions, the TX UE may not send the SL HARQ feedback information to the base station. For example, if the priority value associated with the transmission of the first channel is greater than the priority values ​​associated with other transmissions, the TX UE may not send the SL HARQ feedback information to the base station. For example, if the priority associated with the transmission of the first channel is relatively high compared to other transmissions, the TX UE may send the SL HARQ feedback information to the base station. For example, if the priority value associated with the transmission of the first channel is smaller than the priority values ​​associated with other transmissions, the TX UE may send the SL HARQ feedback information to the base station.

[0248] For example, if the priority associated with the transmission of the first channel is relatively high compared to other transmissions, the TX UE may preferentially allocate the transmission power to the transmission of the first channel. For example, if the priority associated with the transmission of the first channel is relatively high compared to other transmissions, the TX UE may preferentially perform the transmission of the first channel. For example, if the priority value associated with the transmission of the first channel is smaller than the priority value associated with other transmissions, the TX UE may preferentially allocate the transmission power to the transmission of the first channel. For example, if the priority value associated with the transmission of the first channel is smaller than the priority value associated with other transmissions, the TX UE may preferentially perform the transmission of the first channel.

[0249] Fig.18 The process of the TX UE reporting SL HARQ feedback information to the base station based on the embodiment of the present disclosure is shown. Fig.18 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0250] For example, even if the TX UE does not actually send sidelink information to the RX UE, the TX UE may report pre-configured SL HARQ feedback information to the base station through the first channel. For example, the TX UE may be a mode 1 TX UE. For example, 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 first channel may include PUCCH and / or PUSCH. For example, even if the TX UE does not actually send sidelink information to the RX UE, the TX UE may report pre-configured SL HARQ feedback information to the base station through the first channel. For example, even if the TX UE does not actually send sidelink information to the RX UE, the TX UE does not receive SLHARQ feedback information from the RX UE, the TX UE may generate pre-configured SL HARQ feedback information, and the TX UE may report the pre-configured SL HARQ feedback information to the base station through the first channel. For example, the pre-configured SL HARQ feedback information may be ACK information. In this case, the base station may not unnecessarily allocate additional resources (eg, resources allocated by DG) to the TX UE based on the ACK information. Alternatively, for example, the preconfigured SL HARQ feedback information may be NACK information and / or DTX information.

[0251] Reference Fig.18 In step S1810, the TX UE may determine the priority of the first channel through which the SL HARQ feedback information is transmitted. In addition, for example, the TX UE may perform power control for transmission of the first channel based on the priority. For example, in the case of at least one of case A, case B, and / or case C, if the transmission and / or reception of multiple channels related to messages having the same priority overlap partially or completely in the time domain, the TX UE may determine or consider the transmission or reception of the channel satisfying at least one of options 1-1 to 1-13 as a relatively high priority.

[0252] In this case, for example, the TX UE may determine or consider the priority value of the relevant side link information as the priority value of the transmission of the first channel. For example, the TX UE may determine or consider the minimum priority value of the relevant side link information as the priority value of the transmission of the first channel. For example, the TX UE may determine or consider the maximum priority value of the relevant side link information as the priority value of the transmission of the first channel. For example, the TX UE may determine or consider the average value of the priority values ​​of the relevant side link information as the priority value of the transmission of the first channel.

[0253] For example, the TX UE may determine or consider the maximum value among the priority values ​​of multiple side link information related to the session as the priority value for transmission of the first channel. For example, the TX UE may determine or consider the minimum value among the priority values ​​of multiple side link information related to the session as the priority value for transmission of the first channel. For example, the TX UE may determine or consider the average value of the priority values ​​of multiple side link information related to the session as the priority value for transmission of the first channel. For example, the TX UE may determine or consider the weighted average value of the priority values ​​of multiple side link information related to the session as the priority value for transmission of the first channel. For example, the priority may include a service-related priority and / or a QoS-related priority.

[0254] Fig.19 A method in which a TX UE according to an embodiment of the present disclosure reports SL HARQ feedback information to a base station when the TX UE performs SL transmission by not using resources within a specific period is shown. Fig.19 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0255] Reference Fig.19 , it is assumed that the TX UE performs SL transmission by using the SL resources corresponding to A. In this case, the TX UE may receive SL HARQ feedback information from the RX UE, and the TX UE may report the SL HARQ feedback information to the base station.

[0256] On the other hand, it is assumed that the TX UE performs SL transmission by not using the SL resources corresponding to B. For example, the TX UE may send the PSCCH by not using the SL resources corresponding to B. In this case, the TX UE may generate ACK information, and the TX UE may perform UL transmission (e.g., PUCCH transmission) including the ACK information to the base station. In this document, for example, the priority of the UL transmission (e.g., PUCCH transmission) may be the same as the maximum priority value among the possible priority values ​​for the session. For example, the priority of the UL transmission (e.g., PUCCH transmission) may be the same as the maximum priority value among the possible priority values ​​for the CG. For example, the TX UE may determine the priority of the ACK information based on Table 9.

[0257] [Table 9]

[0258]

[0259] For example, the TX UE may determine or consider the preconfigured priority as the priority for transmission of the first channel.

[0260] For example, the proposed method can be restrictively applied only when a PUCCH through which SL HARQ feedback information is reported and a PUCCH through which HARQ feedback information for PSDCH is reported are sent based on TDM. For example, the proposed method can be restrictively applied only when SL HARQ feedback information and HARQ feedback information for PSSCH are not multiplexed in the same PUCCH.

[0261] Return to reference Fig.18 In step S1820, the TX UE may report the SL HARQ feedback information to the base station through the first channel. For example, the TX UE may report the SL HARQ feedback information to the base station through the first channel by using the transmission power allocated for the transmission of the first channel.

[0262] For example, if the priority associated with the transmission of the first channel is relatively low compared to other transmissions, the TX UE may not send the SL HARQ feedback information to the base station. For example, if the priority value associated with the transmission of the first channel is greater than the priority values ​​associated with other transmissions, the TX UE may not send the SL HARQ feedback information to the base station. For example, if the priority associated with the transmission of the first channel is relatively high compared to other transmissions, the TX UE may send the SL HARQ feedback information to the base station. For example, if the priority value associated with the transmission of the first channel is smaller than the priority values ​​associated with other transmissions, the TX UE may send the SL HARQ feedback information to the base station.

[0263] For example, if the priority associated with the transmission of the first channel is relatively high compared to other transmissions, the TX UE may preferentially allocate the transmission power to the transmission of the first channel. For example, if the priority associated with the transmission of the first channel is relatively high compared to other transmissions, the TX UE may preferentially perform the transmission of the first channel. For example, if the priority value associated with the transmission of the first channel is smaller than the priority value associated with other transmissions, the TX UE may preferentially allocate the transmission power to the transmission of the first channel. For example, if the priority value associated with the transmission of the first channel is smaller than the priority value associated with other transmissions, the TX UE may preferentially perform the transmission of the first channel.

[0264] Based on the embodiments of the present disclosure, the TX UE may determine or consider the preconfigured priority as the priority of the transmission of the first channel. For example, the TX UE may determine or consider the priority preconfigured from the base station or the network as the priority of the transmission of the first channel. For example, the TX UE may receive information related to the priority from the base station or the network. For example, the preconfigured priority for the transmission of the first channel may be configured or specified differently or independently from the priorities of other types of PUCCH transmissions or PUSCH transmissions. For example, the preconfigured priority of PUCCH transmissions and / or PUSCH transmissions of type 5 and / or type 6 may be configured or specified differently or independently from the priorities of PUCCH transmissions and / or PUSCH transmissions of type 1 and / or type 3.

[0265] Based on the embodiments of the present disclosure, if the TX UE sends only SL HARQ feedback information through the first channel, the TX UE may Figures 1 to 19 The associated process determines a priority associated with transmission of the first channel.

[0266] For example, if the TX UE transmits SL HARQ feedback information and other information through a first channel, the TX UE may determine or consider the preconfigured priority as a priority associated with transmission of the first channel. For example, if the TX UE multiplexes SL HARQ feedback information and other types of information (e.g., type 1, type 2, or type 3) and transmits it through a first channel, the TX UE may determine or consider the priority preconfigured from the base station or the network as a priority associated with transmission of the first channel.

[0267] For example, if the TX UE sends the SL HARQ feedback information and other information through the first channel, the TX UE may apply the same method only to the SL HARQ feedback information. Figures 1 to 19 The related process and thus the priority associated with the transmission of the first channel can be determined.

[0268] Based on the embodiments of the present disclosure, the priority of the signal related to type 4 may be preconfigured for the TX UE. For example, the priority of the signal related to type 4 may be preconfigured for the TX UE from the base station or the network. For example, the priority of the channel related to type 1 may be preconfigured for the TX UE. For example, the priority of the channel related to type 1 may be preconfigured for the TX UE from the base station or the network. For example, the priority of the channel related to type 2 may be preconfigured for the TX UE. For example, the priority of the channel related to type 2 may be preconfigured for the TX UE from the base station or the network. For example, the priority of the channel related to type 3 may be preconfigured for the TX UE. For example, the priority of the channel related to type 3 may be preconfigured for the TX UE from the base station or the network.

[0269] Based on the embodiments of the present disclosure, the TX UE may determine or consider the priority of the associated service as the priority of the signal related to type 4. For example, the TX UE may determine or consider the highest priority among the priorities of the associated services as the priority of the signal related to type 4. For example, the TX UE may determine or consider the lowest priority among the priorities of the associated services as the priority of the signal related to type 4. For example, the TX UE may determine or consider the average priority of the priorities of the associated services as the priority of the signal related to type 4.

[0270] Based on the embodiments of the present disclosure, the TX UE may determine or consider the priority of the associated service as the priority of the channel associated with type 1. For example, the TX UE may determine or consider the highest priority among the priorities of the associated services as the priority of the channel associated with type 1. For example, the TX UE may determine or consider the lowest priority among the priorities of the associated services as the priority of the channel associated with type 1. For example, the TX UE may determine or consider the average priority of the priorities of the associated services as the priority of the channel associated with type 1.

[0271] Based on the embodiments of the present disclosure, the TX UE may determine or consider the priority of the associated service as the priority of the channel associated with type 2. For example, the TX UE may determine or consider the highest priority among the priorities of the associated services as the priority of the channel associated with type 2. For example, the TX UE may determine or consider the lowest priority among the priorities of the associated services as the priority of the channel associated with type 2. For example, the TX UE may determine or consider the average priority of the priorities of the associated services as the priority of the channel associated with type 2.

[0272] Based on the embodiments of the present disclosure, the TX UE may determine or consider the priority of the associated service as the priority of the channel associated with type 3. For example, the TX UE may determine or consider the highest priority among the priorities of the associated services as the priority of the channel associated with type 3. For example, the TX UE may determine or consider the lowest priority among the priorities of the associated services as the priority of the channel associated with type 3. For example, the TX UE may determine or consider the average priority of the priorities of the associated services as the priority of the channel associated with type 3.

[0273] Based on various embodiments of the present disclosure, the TX UE can efficiently determine the priority associated with the transmission of the channel for reporting SL HARQ feedback to the base station. In addition, the TX UE can efficiently perform power control for reporting SL HARQ feedback to the base station based on the priority.

[0274] Fig. 20A method for a first device to perform power control related to channel transmission according to 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.

[0275] Reference Fig. 20 In step S2010, the first device may determine a priority associated with a channel for reporting information about SL HARQ feedback to the base station. For example, in response to sidelink information sent by the first device to the second device, the first device may receive information about SL HARQ feedback from the second device. For example, 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 priority associated with the channel may be determined based on the priority of the sidelink information. For example, the priority associated with the channel may be configured or determined by the base station. For example, the priority associated with the channel may be determined based on various embodiments of the present disclosure. For example, the channel may include PUCCH and / or PUSCH.

[0276] In step S2020, the first device may perform power control related to transmission of the channel based on priority. For example, the first device may determine or control the transmission power of information about SL HARQ feedback based on priority. For example, the first device may preferentially transmit the channel based on priority. For example, the first device may (preferentially) allocate transmission power to the transmission of the channel based on priority and perform transmission of the channel. For example, the first device may not perform transmission of the channel based on priority.

[0277] Fig.21 A method for a base station to receive information about SL HARQ feedback 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.

[0278] Reference Fig.21, in step S2110, the base station may receive information about SL HARQ feedback from the first device through a channel. For example, the transmission power of the information about SL HARQ feedback sent by the first device through a channel may be determined by the first device based on a priority associated with the channel. For example, the priority associated with the channel may be determined based on the priority of the sidelink information sent by the first device. For example, the priority associated with the channel may be determined based on the priority of the sidelink information to be sent by the first device. For example, the priority associated with the channel may be configured or determined by the base station. For example, the priority associated with the channel may be determined based on various embodiments of the present disclosure. For example, 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 channel may include a PUCCH and / or a PUSCH.

[0279] Fig. 22 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown. Fig. 22 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0280] Reference Fig. 22 In step S2210, the first device may send at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) associated with at least one PSCCH to the second device. In step S2220, the first device may receive at least one sidelink (SL) hybrid automatic repeat request (HARQ) feedback information from the second device via at least one physical sidelink feedback channel (PSFCH) associated with at least one PSSCH. In step S2230, the first device may determine a priority value for physical uplink control channel (PUCCH) transmission for reporting at least one SL HARQ feedback information to a base station based on at least one priority value of at least one SL HARQ feedback information.

[0281] For example, the priority value of the PUCCH transmission may be the minimum value among at least one priority value of at least one SL HARQ feedback information. In addition, for example, the first device may determine at least one priority value of at least one SL HARQ feedback information. In this document, for example, at least one priority value of at least one SL HARQ feedback information may be the same as at least one priority value associated with the transmission of at least one PSSCH. For example, at least one priority value associated with the transmission of at least one PSSCH may be included in at least one side link control information (SCI) sent via at least one PSCCH.

[0282] In addition, for example, the first device may perform PUCCH transmission or SL transmission based on the priority value of PUCCH transmission and the priority value of SL transmission. For example, PUCCH transmission and SL transmission may overlap in the time domain. For example, based on the priority value of PUCCH transmission being smaller than the priority value of SL transmission, PUCCH transmission may be performed to the base station. For example, based on (i) the priority value of PUCCH transmission being smaller than the priority value of SL transmission and (ii) the sum of the power associated with PUCCH transmission and the power associated with SL transmission exceeding the maximum transmission power of the first device, the power associated with SL transmission may be reduced so that the sum does not exceed the maximum transmission power. For example, based on the priority value of PUCCH transmission being greater than the priority value of SL transmission, SL transmission may be performed. For example, based on (i) the priority value of PUCCH transmission being greater than the priority value of SL transmission and (ii) the sum of the power associated with PUCCH transmission and the power associated with SL transmission exceeding the maximum transmission power of the first device, the power associated with PUCCH transmission may be reduced so that the sum does not exceed the maximum transmission power.

[0283] In addition, for example, the first device may send a physical random access channel (PRACH) to the base station. For example, the priority associated with the transmission of the PRACH may be higher than the priority associated with the transmission of the PSFCH. For example, the priority associated with the transmission of the PRACH may be higher than the priority associated with the transmission of the sidelink synchronization signal block (S-SSB).

[0284] In addition, for example, the first device may receive information related to SL resources from the base station.

[0285] 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 send at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) related to at least one PSCCH to the second device. In addition, the processor 102 of the first device 100 can control the transceiver 106 to receive at least one sidelink (SL) hybrid automatic repeat request (HARQ) feedback information from the second device through at least one physical sidelink feedback channel (PSFCH) related to at least one PSSCH. In addition, the processor 102 of the first device 100 can determine the priority value of the physical uplink control channel (PUCCH) transmission for reporting at least one SL HARQ feedback information to the base station based on at least one priority value of the at least one SL HARQ feedback information.

[0286] 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, one or more memories storing instructions; one or more transceivers; and one or more processors, 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 at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) associated with at least one PSCCH to a second device; receiving at least one sidelink (SL) hybrid automatic repeat request (HARQ) feedback information from the second device through at least one physical sidelink feedback channel (PSFCH) associated with at least one PSSCH; and determining a priority value for a physical uplink control channel (PUCCH) transmission for reporting at least one SL HARQ feedback information to a base station based on at least one priority value of at least one SL HARQ feedback information.

[0287] 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, one or more memories being operatively connected to the one or more processors and storing instructions. For example, the one or more processors may execute instructions to perform the following operations: sending at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) associated with at least one PSCCH to a second UE; receiving at least one sidelink (SL) hybrid automatic repeat request (HARQ) feedback information from the second UE via at least one physical sidelink feedback channel (PSFCH) associated with at least one PSSCH; and determining a priority value for a physical uplink control channel (PUCCH) transmission for reporting at least one SL HARQ feedback information to a base station based on at least one priority value of at least one SL HARQ feedback information.

[0288] 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: sending at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) associated with at least one PSCCH to a second device; receiving at least one sidelink (SL) hybrid automatic repeat request (HARQ) feedback information from the second device via at least one physical sidelink feedback channel (PSFCH) associated with at least one PSSCH; and determining a priority value for a physical uplink control channel (PUCCH) transmission for reporting at least one SL HARQ feedback information to a base station based on at least one priority value of at least one SL HARQ feedback information.

[0289] Fig.23 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown. Fig.23 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0290] Reference Fig.23 In step S2310, the base station may send information related to a side link (SL) resource and information related to a physical uplink control channel (PUCCH) resource to the first device. In step S2320, the base station may receive at least one SL hybrid automatic repeat request (HARQ) feedback information from the first device based on the PUCCH resource. For example, the priority value of the PUCCH transmission performed by the first device may be the minimum value among the priority values ​​of the at least one SL HARQ feedback information.

[0291] 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, the processor 202 of the base station 200 can control the transceiver 206 to receive at least one SL hybrid automatic repeat request (HARQ) feedback information from the first device based on the PUCCH resource. For example, the priority value of the PUCCH transmission performed by the first device can be the minimum value among the priority values ​​of the at least one SL HARQ feedback information.

[0292] Based on an embodiment 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, one or more memories storing instructions; one or more transceivers; and one or more processors, 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 side link (SL) resources and information related to physical uplink control channel (PUCCH) resources to a first device; and receive at least one SL hybrid automatic repeat request (HARQ) feedback information from the first device based on the PUCCH resources. For example, the priority value of the PUCCH transmission performed by the first device may be the minimum value among the priority values ​​of at least one SL HARQ feedback information.

[0293] 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, one or more memories being operatively connected to the one or more processors and storing instructions. For example, the one or more processors may execute instructions to perform the following operations: sending information related to sidelink (SL) resources and information related to physical uplink control channel (PUCCH) resources to a first user equipment (UE); and receiving at least one SL hybrid automatic repeat request (HARQ) feedback information from the first UE based on the PUCCH resources. For example, the priority value of the PUCCH transmission performed by the first UE may be the minimum value among the priority values ​​of at least one SL HARQ feedback information.

[0294] 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 receiving at least one SL hybrid automatic repeat request (HARQ) feedback information from the first device based on the PUCCH resource. For example, the priority value of the PUCCH transmission performed by the first device may be the minimum value among the priority values ​​of at least one SL HARQ feedback information.

[0295] Fig.24 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown. Fig.24 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0296] Reference Fig.24, in step S2410, the first device may select a synchronization reference based on a side link (SL) synchronization priority. For example, the SL synchronization priority may be set to synchronization based on a global navigation satellite system (GNSS) or synchronization based on a base station (BS), and the synchronization reference may include at least one of a GNSS, a base station, or a UE, and based on the SL synchronization priority being set to synchronization based on GNSS, the priority of a synchronization reference associated with the GNSS may be higher than the priority of a synchronization reference associated with the base station, and based on the SL synchronization priority being set to synchronization based on the BS, the priority of a synchronization reference associated with the base station may be higher than the priority of a synchronization reference associated with the GNSS. In step S2420, the first device may obtain synchronization based on the synchronization reference. In step S2430, the first device may send a first physical side link control channel (PSCCH) and a first physical side link shared channel (PSSCH) associated with the first PSCCH to the second device. In step S2440, the first device may send a second PSCCH and a second PSSCH associated with the second PSCCH to the second device. In step S2450, the first device may receive first SL hybrid automatic repeat request (HARQ) feedback information from the second device via a first physical side link feedback channel (PSFCH) associated with a first PSSCH. In step S2460, the first device may receive second SL HARQ feedback information from the second device via a second PSFCH associated with a second PSSCH. In step S2470, the first device may determine a priority value for physical uplink control channel (PUCCH) transmission for reporting the first SL HARQ feedback information and the second SL HARQ feedback information to a base station based on a priority value of the first SL HARQ feedback information and a priority value of the second SL HARQ feedback information.

[0297] For example, the priority value of the PUCCH transmission may be the minimum value between the priority value of the first SL HARQ feedback information and the priority value of the second SL HARQ feedback information. In addition, for example, the first device may determine the priority value of the first SL HARQ feedback information and the priority value of the second SL HARQ feedback information. For example, the priority value of the first SL HARQ feedback information may be the same as the priority value associated with the transmission of the first PSSCH, and the priority value of the second SL HARQ feedback information may be the same as the priority value associated with the transmission of the second PSSCH. For example, the priority value associated with the transmission of the first PSSCH may be sent through the side link control information (SCI) on the first PSCCH, and the priority value associated with the transmission of the second PSSCH may be sent through the SCI on the second PSCCH.

[0298] In addition, for example, the first device may receive information related to SL resource allocation from the base station.

[0299] In addition, for example, the first device may perform a physical random access channel (PRACH) transmission to the base station. For example, the priority of the PRACH transmission may be higher than the priority of the PSFCH transmission. For example, the priority of the PRACH transmission may be higher than the priority of the sidelink synchronization signal block (S-SSB) transmission.

[0300] In addition, for example, the first device may perform PUCCH transmission or SL transmission based on the priority value of PUCCH transmission and the priority value of SL transmission. For example, PUCCH transmission and SL transmission may overlap in the time domain. For example, the priority value of PUCCH transmission may be smaller than the priority value of SL transmission, and PUCCH transmission may be performed to the base station and SL transmission may not be performed. For example, the priority value of PUCCH transmission may be smaller than the priority value of SL transmission, and the sum of the power used for PUCCH transmission and the power used for SL transmission may exceed the maximum transmission power of the first device, and the power used for SL transmission may be reduced so that the sum does not exceed the maximum transmission power. For example, the priority value of PUCCH transmission may be greater than the priority value of SL transmission, and SL transmission may be performed and PUCCH transmission may not be performed to the base station. For example, the priority value of PUCCH transmission may be greater than the priority value of SL transmission, and the sum of the power used for PUCCH transmission and the power used for SL transmission may exceed the maximum transmission power of the first device, and the power used for PUCCH transmission may be reduced so that the sum does not exceed the maximum transmission power.

[0301] The proposed method can be applied to the device described in the present disclosure. First, the processor 102 of the first device 100 can select a synchronization reference based on a side link (SL) synchronization priority. For example, the SL synchronization priority can be set to synchronization based on a global navigation satellite system (GNSS) or synchronization based on a base station (BS), and the synchronization reference can include at least one of a GNSS, a base station, or a UE, and based on the SL synchronization priority being set to synchronization based on GNSS, the priority of the synchronization reference associated with the GNSS can be higher than the priority of the synchronization reference associated with the base station, and based on the SL synchronization priority being set to synchronization based on the BS, the priority of the synchronization reference associated with the base station can be higher than the priority of the synchronization reference associated with the GNSS. In addition, the processor 102 of the first device 100 can obtain synchronization based on the synchronization reference. In addition, the processor 102 of the first device 100 can control the transceiver 106 to send a first physical side link control channel (PSCCH) and a first physical side link shared channel (PSSCH) associated with the first PSCCH to the second device. In addition, the processor 102 of the first device 100 can control the transceiver 106 to send a second PSCCH and a second PSSCH related to the second PSCCH to the second device. In addition, the processor 102 of the first device 100 can control the transceiver 106 to receive a first SL hybrid automatic repeat request (HARQ) feedback information from the second device through a first physical side link feedback channel (PSFCH) related to the first PSSCH. In addition, the processor 102 of the first device 100 can control the transceiver 106 to receive a second SL HARQ feedback information from the second device through a second PSFCH related to the second PSSCH. In addition, the processor 102 of the first device 100 can determine a priority value for a physical uplink control channel (PUCCH) transmission for reporting the first SL HARQ feedback information and the second SL HARQ feedback information to the base station based on the priority value of the first SL HARQ feedback information and the priority value of the second SL HARQ feedback information.

[0302] Based on an embodiment 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, the one or more memories storing instructions; one or more transceivers; and one or more processors, the one or more processors being 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: selecting a synchronization reference based on a sidelink (SL) synchronization priority, wherein the SL synchronization priority is set to global navigation satellite system (GNSS)-based synchronization or base station (BS)-based synchronization, wherein the synchronization reference includes at least one of a GNSS, a base station, or a UE, wherein based on the SL synchronization priority being set to GNSS-based synchronization, the priority of the synchronization reference associated with the GNSS is higher than the priority of the synchronization reference associated with the base station, and wherein based on the SL synchronization priority being set to BS-based synchronization, the priority of the synchronization reference associated with the base station is higher than the priority of the synchronization reference associated with the GNS S has a higher priority; obtain synchronization based on the synchronization reference; send a first physical side link control channel (PSCCH) and a first physical side link shared channel (PSSCH) related to the first PSCCH to the second device; send a second PSCCH and a second PSSCH related to the second PSCCH to the second device; receive a first SL hybrid automatic repeat request (HARQ) feedback information from the second device through a first physical side link feedback channel (PSFCH) related to the first PSSCH; receive second SL HARQ feedback information from the second device through a second PSFCH related to the second PSSCH; and determine the priority value of the physical uplink control channel (PUCCH) transmission for reporting the first SL HARQ feedback information and the second SL HARQ feedback information to the base station based on the priority value of the first SL HARQ feedback information and the priority value of the second SL HARQ feedback information.

[0303] 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, the one or more memories being operatively connected to the one or more processors and storing instructions. For example, the one or more processors may execute instructions to perform the following operations: selecting a synchronization reference based on a sidelink (SL) synchronization priority, wherein the SL synchronization priority is set to global navigation satellite system (GNSS)-based synchronization or base station (BS)-based synchronization, wherein the synchronization reference includes at least one of a GNSS, a base station, or a UE, wherein based on the SL synchronization priority being set to GNSS-based synchronization, a synchronization reference associated with the GNSS has a higher priority than a synchronization reference associated with the base station, and wherein based on the SL synchronization priority being set to BS-based synchronization, a synchronization reference associated with the base station has a higher priority. The priority is higher than the priority of the synchronization reference related to the GNSS; synchronization is obtained based on the synchronization reference; a first physical sidelink control channel (PSCCH) and a first physical sidelink shared channel (PSSCH) related to the first PSCCH are sent to the second UE; a second PSCCH and a second PSSCH related to the second PSCCH are sent to the second UE; first SL hybrid automatic repeat request (HARQ) feedback information is received from the second UE through a first physical sidelink feedback channel (PSFCH) related to the first PSSCH; second SL HARQ feedback information is received from the second UE through a second PSFCH related to the second PSSCH; and based on the priority value of the first SL HARQ feedback information and the priority value of the second SL HARQ feedback information, a priority value for physical uplink control channel (PUCCH) transmission for reporting the first SL HARQ feedback information and the second SL HARQ feedback information to the base station is determined.

[0304] 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: selecting a synchronization reference based on a side link (SL) synchronization priority, wherein the SL synchronization priority is set to synchronization based on a global navigation satellite system (GNSS) or synchronization based on a base station (BS), wherein the synchronization reference includes at least one of a GNSS, a base station, or a UE, wherein based on the SL synchronization priority being set to synchronization based on a GNSS, a priority of a synchronization reference associated with a GNSS is higher than a priority of a synchronization reference associated with a base station, and wherein based on the SL synchronization priority being set to synchronization based on a BS, a priority of a synchronization reference associated with a base station is higher than a priority of a synchronization reference associated with a base station The priority is higher than the priority of the synchronization reference related to the GNSS; synchronization is obtained based on the synchronization reference; a first physical side link control channel (PSCCH) and a first physical side link shared channel (PSSCH) related to the first PSCCH are sent to the second device; a second PSCCH and a second PSSCH related to the second PSCCH are sent to the second device; a first SL hybrid automatic repeat request (HARQ) feedback information is received from the second device through a first physical side link feedback channel (PSFCH) related to the first PSSCH; a second SL HARQ feedback information is received from the second device through a second PSFCH related to the second PSSCH; and based on the priority value of the first SL HARQ feedback information and the priority value of the second SL HARQ feedback information, a priority value of a physical uplink control channel (PUCCH) transmission for reporting the first SL HARQ feedback information and the second SL HARQ feedback information to the base station is determined.

[0305] Fig.25 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown. Fig.25 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0306] Reference Fig.25 In step S2510, the base station may send information related to side link (SL) resources and information related to physical uplink control channel (PUCCH) resources to the first device through a downlink (DL) bandwidth part (BWP). In step S2520, the base station may receive first SL hybrid automatic repeat request (HARQ) feedback information and second SL HARQ feedback information from the first device through PUCCH resources on an uplink (UL) BWP. For example, the priority value of the PUCCH transmission performed by the first device may be the minimum value between the priority value of the first SL HARQ feedback information and the priority value of the second SL HARQ feedback information.

[0307] 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) resources and information related to the physical uplink control channel (PUCCH) resources to the first device through the downlink (DL) bandwidth part (BWP). In addition, the processor 202 of the base station 200 can control the transceiver 206 to receive the first SL hybrid automatic repeat request (HARQ) feedback information and the second SL HARQ feedback information from the first device through the PUCCH resource on the uplink (UL) BWP. For example, the priority value of the PUCCH transmission performed by the first device can be the minimum value between the priority value of the first SL HARQ feedback information and the priority value of the second SL HARQ feedback information.

[0308] Based on an embodiment 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, one or more memories storing instructions; one or more transceivers; and one or more processors, 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 side link (SL) resources and information related to physical uplink control channel (PUCCH) resources to a first device via a downlink (DL) bandwidth part (BWP); and receive first SL hybrid automatic repeat request (HARQ) feedback information and second SL HARQ feedback information from the first device via PUCCH resources on an uplink (UL) BWP. For example, the priority value of the PUCCH transmission performed by the first device may be the minimum value between the priority value of the first SL HARQ feedback information and the priority value of the second SL HARQ feedback information.

[0309] 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, one or more memories being operatively connected to the one or more processors and storing instructions. For example, the one or more processors may execute instructions to perform the following operations: sending information related to sidelink (SL) resources and information related to physical uplink control channel (PUCCH) resources to a first user equipment (UE) via a downlink (DL) bandwidth part (BWP); and receiving first SL hybrid automatic repeat request (HARQ) feedback information and second SL HARQ feedback information from the first UE via PUCCH resources on an uplink (UL) BWP. For example, the priority value of the PUCCH transmission performed by the first UE may be the minimum value between the priority value of the first SL HARQ feedback information and the priority value of the second SL HARQ feedback information.

[0310] 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 side link (SL) resources and information related to physical uplink control channel (PUCCH) resources to the first device through a downlink (DL) bandwidth part (BWP); and receiving first SL hybrid automatic repeat request (HARQ) feedback information and second SL HARQ feedback information from the first device through PUCCH resources on an uplink (UL) BWP. For example, the priority value of the PUCCH transmission performed by the first device may be the minimum value between the priority value of the first SL HARQ feedback information and the priority value of the second SL HARQ feedback information.

[0311] Fig.26 A method for a first device to perform wireless communication based on an embodiment of the present disclosure is shown. Fig.26 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0312] Reference Fig.26 In step S2610, the first device may receive information related to a physical uplink control channel (PUCCH) resource for reporting hybrid automatic repeat request (HARQ) feedback information and information related to a first side link (SL) resource from a base station. In step S2620, the first device may generate HARQ feedback information based on the first device not performing a first SL transmission on the first SL resource. In step S2630, the first device may determine a priority value of the HARQ feedback information. For example, the priority value of the HARQ feedback information may be the same as the maximum priority value among at least one priority value related to the first SL resource.

[0313] In addition, for example, the first device may determine not to perform the first SL transmission on the first SL resource. For example, the HARQ feedback information generated by the first device based on the fact that the first device did not perform the first SL transmission on the first SL resource may be an ACK. For example, the first SL transmission may include a physical sidelink control channel (PSCCH) transmission or a physical sidelink shared channel (PSSCH) transmission. For example, the first SL resource may be a resource allocated by a configuration grant. For example, the first SL resource may be periodically allocated by a configuration grant, and an ACK may be generated by the first device based on the fact that the first device did not perform the first SL transmission on the first SL resource within a first time period allocated by the configuration grant.

[0314] In addition, for example, the first device may perform at least one of a second SL transmission based on a second SL resource or a PUCCH transmission including HARQ feedback information based on a PUCCH resource based on a priority value of the HARQ feedback information and a priority value of the second SL transmission. For example, the PUCCH resource and the second SL resource may overlap in the time domain. For example, based on the priority value of the HARQ feedback information being smaller than the priority value of the second SL transmission, a PUCCH transmission including HARQ feedback information may be performed. For example, based on the priority value of the HARQ feedback information being larger than the priority value of the second SL transmission, a second SL transmission may be performed. For example, based on (i) the priority value of the HARQ feedback information being smaller than the priority value of the second SL transmission and (ii) the sum of the power associated with the PUCCH transmission and the power associated with the second SL transmission exceeding the maximum transmit power of the first device, the power associated with the second SL transmission may be reduced so that the sum does not exceed the maximum transmit power. For example, based on (i) the priority value of the HARQ feedback information is greater than the priority value of the second SL transmission and (ii) the sum of the power associated with the PUCCH transmission and the power associated with the second SL transmission exceeds the maximum transmit power of the first device, the power associated with the PUCCH transmission can be reduced so that the sum does not exceed the maximum transmit power.

[0315] In addition, for example, the first device may perform a physical random access channel (PRACH) transmission to the base station. For example, the priority associated with the PRACH transmission may be higher than the priority associated with the PSFCH transmission or the priority associated with the sidelink synchronization signal block (S-SSB) transmission.

[0316] For example, the at least one priority value associated with the first SL resource may be at least one possible priority value for the configuration permission associated with the first SL resource.

[0317] 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) resources for reporting hybrid automatic repeat request (HARQ) feedback information and information related to the first side link (SL) resources from the base station. In addition, the processor 102 of the first device 100 can generate HARQ feedback information based on the first device not performing the first SL transmission on the first SL resource. In addition, the processor 102 of the first device 100 can determine the priority value of the HARQ feedback information. For example, the priority value of the HARQ feedback information can be the same as the maximum priority value among at least one priority value related to the first SL resource.

[0318] Based on an embodiment 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, one or more memories storing instructions; one or more transceivers; and one or more processors, 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 a physical uplink control channel (PUCCH) resource for reporting hybrid automatic repeat request (HARQ) feedback information and information related to a first side link (SL) resource from a base station; generating HARQ feedback information based on the first device not performing a first SL transmission on a first SL resource; and determining a priority value for the HARQ feedback information. For example, the priority value of the HARQ feedback information may be the same as the maximum priority value among at least one priority value related to the first SL resource.

[0319] 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, one or more memories being operatively connected to the one or more processors and storing instructions. For example, the one or more processors may execute instructions to perform the following operations: receiving information related to a physical uplink control channel (PUCCH) resource for reporting hybrid automatic repeat request (HARQ) feedback information and information related to a first side link (SL) resource from a base station; generating HARQ feedback information based on the first UE not performing a first SL transmission on a first SL resource; and determining a priority value for the HARQ feedback information. For example, the priority value of the HARQ feedback information may be the same as the maximum priority value among at least one priority value associated with the first SL resource.

[0320] 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 physical uplink control channel (PUCCH) resource for reporting hybrid automatic repeat request (HARQ) feedback information and information related to a first side link (SL) resource from a base station; generating HARQ feedback information based on the first device not performing a first SL transmission on a first SL resource; and determining a priority value of the HARQ feedback information. For example, the priority value of the HARQ feedback information may be the same as the maximum priority value among at least one priority value related to the first SL resource.

[0321] Fig. 27 A method for a base station to perform wireless communication based on an embodiment of the present disclosure is shown. Fig. 27 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0322] Reference Fig. 27 In step S2710, the base station may send information related to a physical uplink control channel (PUCCH) resource and information related to a first side link (SL) resource for reporting hybrid automatic repeat request (HARQ) feedback information to the first device. In step S2720, the base station may receive HARQ feedback information from the first device through the PUCCH resource based on the first device not performing a first SL transmission on the first SL resource. For example, the priority value of the HARQ feedback information may be the same as the maximum priority value among at least one priority value related to the first SL resource.

[0323] 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 a physical uplink control channel (PUCCH) resource and information related to a first side link (SL) resource for reporting hybrid automatic repeat request (HARQ) feedback information to the first device. In addition, the processor 202 of the base station 200 can control the transceiver 206 to receive HARQ feedback information from the first device through the PUCCH resource based on the fact that the first device does not perform a first SL transmission on the first SL resource. For example, the priority value of the HARQ feedback information can be the same as the maximum priority value among at least one priority value related to the first SL resource.

[0324] Based on an embodiment 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, one or more memories storing instructions; one or more transceivers; and one or more processors, 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 physical uplink control channel (PUCCH) resource and information related to a first side link (SL) resource for reporting hybrid automatic repeat request (HARQ) feedback information to a first device; and receiving HARQ feedback information from the first device via a PUCCH resource based on the first device not performing a first SL transmission on the first SL resource. For example, the priority value of the HARQ feedback information may be the same as the maximum priority value among at least one priority value related to the first SL resource.

[0325] Based on an embodiment 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, one or more memories being operatively connected to the one or more processors and storing instructions. For example, the one or more processors may execute instructions to perform the following operations: sending information related to a physical uplink control channel (PUCCH) resource and information related to a first side link (SL) resource for reporting hybrid automatic repeat request (HARQ) feedback information to a first user equipment (UE); and receiving HARQ feedback information from the first UE via a PUCCH resource based on the first UE not performing a first SL transmission on the first SL resource. For example, the priority value of the HARQ feedback information may be the same as the maximum priority value among at least one priority value associated with the first SL resource.

[0326] 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 physical uplink control channel (PUCCH) resource and information related to a first side link (SL) resource for reporting hybrid automatic repeat request (HARQ) feedback information to a first device; and receiving HARQ feedback information from the first device via a PUCCH resource based on the first device not performing a first SL transmission on the first SL resource. For example, the priority value of the HARQ feedback information may be the same as the maximum priority value among at least one priority value related to the first SL resource.

[0327] Various embodiments of the present disclosure may be combined with each other.

[0328] Hereinafter, devices to which various embodiments of the present disclosure can be applied will be described.

[0329] 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).

[0330] 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.

[0331] Fig.28 A communication system (1) according to an embodiment of the present disclosure is shown.

[0332] Reference Fig.28 , 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.

[0333] 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.

[0334] The wireless devices 100a to 100f may be connected to the network 300 via the BS 200. 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.

[0335] Wireless communication / connection 150a, 150b or 150c can be established between wireless devices 100a to 100f / BS 200 or BS200 / BS 200. 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 / connections 150a and 150b. For example, wireless communication / connections 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.

[0336] Fig.29 A wireless device according to an embodiment of the present disclosure is shown.

[0337] Reference Fig.29 , 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.28 {wireless device (100x) and BS (200)} and / or {wireless device (100x) and wireless device (100x)}.

[0338] 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 send and / or receive radio signals through (one or more) antennas 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.

[0339] 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.

[0340] 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.

[0341] 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.

[0342] 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.

[0343] 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.

[0344] Fig.30 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown.

[0345] Reference Fig.30 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.30 Operation / function, not limited to Fig.29 The processor (102, 202) and / or the transceiver (106, 206) may be Fig.29The processor (102, 202) and / or the transceiver (106, 206) are implemented Fig.30 For example, you can Fig.29 The processor (102, 202) implements blocks 1010 to 1060. Alternatively, Fig.29 The processor (102, 202) implements blocks 1010 to 1050 and can be implemented by Fig.29 The transceiver (106, 206) is used to implement box 1060.

[0346] Can be through Fig.30 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).

[0347] 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.

[0348] 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.

[0349] Can be used with Fig.30 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.29 100, 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.

[0350] Fig.31 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.28 ).

[0351] Reference Fig.31 , the wireless device (100, 200) may correspond to Fig.29 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 memory 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.29 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.29The control unit (120) is electrically connected to the communication unit (110), the memory (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 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 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).

[0352] 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.28 100a), vehicles ( Fig.28 100b-1 and 100b-2), XR devices ( Fig.28 100c), handheld device ( Fig.28 100d), household appliances ( Fig.28 100e), IoT devices ( Fig.28 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.28 400), BS( Fig.28 200), network nodes, etc. Depending on the use case / service, the wireless device can be used in a mobile or fixed place.

[0353] exist Fig.31In 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 ( 130 ) may be constructed by random access memory (RAM), dynamic RAM (DRAM), read only memory (ROM), flash memory, volatile memory, nonvolatile memory, and / or combinations thereof.

[0354] Hereinafter, the implementation will be described in detail with reference to the accompanying drawings. Fig.31 .

[0355] Fig.32 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).

[0356] Reference Fig.32 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.31 Frame 110 to 130 / 140.

[0357] 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.

[0358] 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.

[0359] Fig.33 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.

[0360] Reference Fig.33 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.31 Frame 110 / 130 / 140.

[0361] 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.

[0362] 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.

[0363] 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 first device, the method comprising the following steps: Sending at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) associated with the at least one PSCCH to a second device; receiving at least one sidelink SL hybrid automatic repeat request HARQ feedback information from the second device via at least one physical sidelink feedback channel PSFCH associated with the at least one PSSCH; determining a priority value for a physical uplink control channel (PUCCH) transmission for reporting the at least one SL HARQ feedback information to a base station; and performing the PUCCH transmission or the SL transmission based on the priority value of the PUCCH transmission and the priority value of the SL transmission, wherein the priority value of the PUCCH transmission having the at least one SL HARQ feedback information is a minimum value among at least one priority value of the at least one SL HARQ feedback information, wherein the PUCCH transmission and the SL transmission overlap in the time domain, and Wherein, based on the fact that the priority value of the PUCCH transmission is smaller than the priority value of the SL transmission, the PUCCH transmission is performed to the base station.

2. The method according to claim 1, further comprising the steps of: determining the at least one priority value of the at least one SL HARQ feedback information, The at least one priority value of the at least one SL HARQ feedback information is the same as at least one priority value associated with the transmission of the at least one PSSCH.

3. The method according to claim 2, wherein: The at least one priority value associated with the transmission of the at least one PSSCH is included in at least one sidelink control information SCI transmitted through the at least one PSCCH.

4. The method according to claim 1, wherein: Based on (i) the priority value of the PUCCH transmission is smaller than the priority value of the SL transmission and (ii) the sum of the power associated with the PUCCH transmission and the power associated with the SL transmission exceeds the maximum transmit power of the first device, the power associated with the SL transmission is reduced so that the sum does not exceed the maximum transmit power.

5. The method according to claim 1, wherein: Based on the fact that the priority value of the PUCCH transmission is greater than the priority value of the SL transmission, the SL transmission is performed.

6. The method according to claim 1, wherein: Based on (i) the priority value of the PUCCH transmission is greater than the priority value of the SL transmission and (ii) the sum of the power associated with the PUCCH transmission and the power associated with the SL transmission exceeds the maximum transmit power of the first device, the power associated with the PUCCH transmission is reduced so that the sum does not exceed the maximum transmit power.

7. The method according to claim 1, wherein: Physical Random Access Channel PRACH transmission has a higher priority than PSFCH transmission and Sidelink Synchronization Signal Block S-SSB transmission.

8. A first device configured to perform wireless communication, the first device comprising: one or more memories storing instructions; 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 processors execute the instructions to perform the following operations: Sending at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) associated with the at least one PSCCH to a second device; receiving at least one sidelink SL hybrid automatic repeat request HARQ feedback information from the second device via at least one physical sidelink feedback channel PSFCH associated with the at least one PSSCH; determining a priority value for a physical uplink control channel (PUCCH) transmission for reporting the at least one SL HARQ feedback information to a base station; and performing the PUCCH transmission or the SL transmission based on the priority value of the PUCCH transmission and the priority value of the SL transmission, wherein the priority value of the PUCCH transmission having the at least one SL HARQ feedback information is a minimum value among at least one priority value of the at least one SL HARQ feedback information, wherein the PUCCH transmission and the SL transmission overlap in the time domain, and Wherein, based on the fact that the priority value of the PUCCH transmission is smaller than the priority value of the SL transmission, the PUCCH transmission is performed to the base station.

9. An apparatus configured to control a first user equipment UE performing wireless communication, the apparatus 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: Sending at least one physical sidelink control channel (PSCCH) and at least one physical sidelink shared channel (PSSCH) related to the at least one PSCCH to a second UE; receiving at least one sidelink SL hybrid automatic repeat request HARQ feedback information from the second UE via at least one physical sidelink feedback channel PSFCH associated with the at least one PSSCH; determining a priority value for a physical uplink control channel (PUCCH) transmission for reporting the at least one SL HARQ feedback information to a base station; and performing the PUCCH transmission or the SL transmission based on the priority value of the PUCCH transmission and the priority value of the SL transmission, wherein the priority value of the PUCCH transmission having the at least one SL HARQ feedback information is a minimum value among at least one priority value of the at least one SL HARQ feedback information, wherein the PUCCH transmission and the SL transmission overlap in the time domain, and Wherein, based on the fact that the priority value of the PUCCH transmission is smaller than the priority value of the SL transmission, the PUCCH transmission is performed to the base station.

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