Method and apparatus for determining power associated with sidelink transmission in NR V2X

Abstract

A method for performing wireless communication by a first device is proposed. The method may include the steps of: determining power associated with a sidelink (SL) transmission based on a downlink path loss, wherein the SL transmission includes at least one of a sidelink synchronization signal / physical sidelink broadcast channel (S‑SS / PSBCH) block transmission, a physical sidelink control channel (PSCCH) transmission, a physical sidelink shared channel (PSSCH) transmission, and a physical sidelink feedback channel (PSFCH) transmission; and performing the SL transmission based on power associated with the SL transmission. For example, based on being configured to monitor downlink control information (DCI) format 0_0, the downlink path loss may be determined based on a first reference signal (RS) for controlling power associated with a physical uplink shared channel (PUSCH) transmission to be scheduled by DCI format 0_0. For example, based on not being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a second RS associated with a synchronization signal block (SSB) for acquiring a master information block (MIB).

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 exchange voice and data directly with each other without the intervention of an evolved Node B (eNB). SL communication is being considered as a solution to the eNB overhead caused by the rapid growth of data traffic. V2X (Vehicle-to-Everything) refers to a communication technology used by vehicles to exchange information with other vehicles, pedestrians, and objects equipped with infrastructure. V2X can be divided into four types: V2V (Vehicle-to-Vehicle), V2I (Vehicle-to-Infrastructure), V2N (Vehicle-to-Network), and V2P (Vehicle-to-Pedestrian). V2X communication can be provided through the PC5 interface and / or the Uu interface.

[0003] In addition, as more and more communication devices require larger communication capacity, the demand for enhanced mobile broadband communication relative to traditional radio access technology (RAT) is increasing. Therefore, the design of communication systems that take into account UEs or services that are sensitive to reliability and latency has also been discussed. In addition, the next generation of radio access technologies based on enhanced mobile broadband communication, massive machine type communication (MTC), ultra-reliable low latency communication (URLLC), etc. can be referred to as new RAT (radio access technology) or NR (new radio). In this article, NR can also support vehicle-to-everything (V2X) communication.

[0004] Figure 1 This diagram describes NR-based V2X communication compared to V2X communication based on RATs used before NR. Figure 1 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0005] Regarding V2X communication, when discussing RATs used prior to NR, the focus is on solutions that provide safety services based on V2X messages such as BSM (Basic Safety Message), CAM (Cooperation 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 CAM message type and / or an event-triggered DENM message type to another UE.

[0006] Since then, various V2X scenarios have been proposed for NR regarding V2X communications, including vehicle platooning, advanced driving, extended sensors, and remote driving. Summary of the Invention

[0007] Technical issues

[0008] Meanwhile, in NR sidelink communications, if the UE is within the coverage of the base station, the UE can determine the sidelink (SL) transmit power based on the downlink (DL) path loss (hereinafter referred to as DL PL) to reduce the interference level on the uplink (UL) communication. In this context, for example, there may be a question about which reference signal (RS) / signal the UE should use to derive the DL PL.

[0009] Technical Solution

[0010] In one embodiment, a method for performing wireless communication by a first device is provided. The method may include: determining a power associated with a sidelink (SL) transmission based on a downlink path loss, wherein the SL transmission includes at least one of a sidelink synchronization signal / physical sidelink broadcast channel (S-SS / PSBCH) block transmission, a physical sidelink control channel (PSCCH) transmission, a physical sidelink shared channel (PSSCH) transmission, or a physical sidelink feedback channel (PSFCH) transmission; and performing the SL transmission based on the power associated with the SL transmission. For example, based on being configured to monitor downlink control information (DCI) format 0_0, the downlink path loss may be determined based on a first reference signal (RS) used for power control associated with a physical uplink shared channel (PUSCH) transmission scheduled by the DCI format 0_0. For example, based on not being configured to monitor the DCI format 0_0, the downlink path loss may be determined based on a second RS associated with a synchronization signal block (SSB) used to obtain a master information block (MIB).

[0011] In one embodiment, a first device suitable for performing 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. The one or more processors may execute the instructions to: determine the power associated with SL transmission based on the downlink path loss, wherein the SL transmission includes at least one of S-SS / PSBCH block transmission, PSCCH transmission, PSSCH transmission or PSFCH transmission; and perform the SL transmission based on the power associated with the SL transmission. For example, based on being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a first RS used for power control associated with PUSCH transmission scheduled by the DCI format 0_0. For example, based on not being configured to monitor the DCI format 0_0, the downlink path loss is determined based on a second RS associated with the SSB used to obtain the MIB.

[0012] Effects of the present invention

[0013] The user equipment (UE) can efficiently perform SL communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This diagram describes NR-based V2X communication compared to V2X communication based on RATs used before NR.

[0015] Figure 2 The structure of the NR system according to the embodiment of the present disclosure is shown.

[0016] Figure 3 A radio protocol architecture according to an embodiment of the present disclosure is shown.

[0017] Figure 4 The structure of the NR radio frame according to an embodiment of the present disclosure is shown.

[0018] Figure 5 The structure of the time slot of the NR frame based on an embodiment of the present disclosure is shown.

[0019] Figure 6 An example of a BWP according to an embodiment of the present disclosure is shown.

[0020] Figure 7 A UE performing V2X or SL communication according to an embodiment of the present disclosure is shown.

[0021] Figure 8 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.

[0022] Figure 9 Three broadcast types according to embodiments of the present disclosure are shown.

[0023] Figure 10 A method in which a UE that has reserved transmission resources notifies another UE of the transmission resources according to an embodiment of the present disclosure is shown.

[0024] Figure 11 A process in which a transmitting UE determines power related to SL transmission and performs SL transmission based on the determined power according to an embodiment of the present disclosure is shown.

[0025] Figure 12 The state of the UE according to the embodiment of the present disclosure is shown.

[0026] Figure 13 The PUSCH within the window pre-configured by the UE according to an embodiment of the present disclosure is shown.

[0027] Figure 14A method for a first device to perform SL transmission based on power associated with the SL transmission according to an embodiment of the present disclosure is shown.

[0028] Figure 15 A method for a second device to perform side link communication with a first device according to an embodiment of the present disclosure is shown.

[0029] Figure 16 A communication system 1 according to an embodiment of the present disclosure is shown.

[0030] Figure 17 A wireless device according to an embodiment of the present disclosure is shown.

[0031] Figure 18 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown.

[0032] Figure 19 Another example of a wireless device according to an embodiment of the present disclosure is shown.

[0033] Figure 20 A handheld device according to an embodiment of the present disclosure is shown.

[0034] Figure 21 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0035] In the present disclosure, "A or B" may mean "only A", "only B", or "both A and B". In other words, in the present disclosure, "A or B" may be interpreted as "A and / or B". For example, in the present disclosure, "A, B or C" may mean "only A", "only B", "only C", or "any combination of A, B, and C".

[0036] As used in this disclosure, a slash ( / ) or a comma 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".

[0037] In the present disclosure, “at least one of A and B” may mean “only A”, “only B”, or “both A and B”. In addition, in the present disclosure, 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”.

[0038] In addition, in the present disclosure, “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.”

[0039] In addition, the brackets used in the present disclosure may mean "for example". Specifically, when it is 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 the present disclosure is not limited to "PDCCH", and "PDDCH" may be proposed as an example of "control information". Specifically, when it is indicated as "control information (i.e., PDCCH)", this may also mean that "PDCCH" is proposed as an example of "control information".

[0040] The technical features described in each of the drawings in the present disclosure may be implemented separately or simultaneously.

[0041] 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 the Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is part of Evolved UMTS (E-UMTS) that uses E-UTRA. 3GPP LTE uses OFDMA in the downlink and SC-FDMA in the uplink. LTE-Advanced (LTE-A) is an evolution of LTE.

[0042] 5G NR is a successor technology to LTE-A, a new mobile communication system with high performance, low latency, and high availability. 5G NR can use all available spectrum resources, including low-frequency bands below 1 GHz, intermediate frequency bands from 1 GHz to 10 GHz, and high-frequency bands (millimeter waves) above 24 GHz.

[0043] For clarity of description, the following description will mainly focus on LTE-A or 5G NR. However, the technical features of the embodiments of the present disclosure are not limited thereto.

[0044] 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.

[0045] 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 for 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 by 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 by other terms such as a base transceiver system (BTS), an access point (AP), etc.

[0046] Figure 2 The embodiment of the present invention illustrates a case where only gNBs are included. BSs 20 may be connected to each other via an Xn interface. BSs 20 may be connected to each other via a fifth-generation (5G) core network (5GC) and an NG interface. More specifically, BSs 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.

[0047] The radio interface protocol layers between the UE and the network can be categorized as Layer 1 (L1), Layer 2 (L2), and Layer 3 (L3) based on the lower three layers of the Open Systems Interconnection (OSI) model, which is well known in communication systems. The physical (PHY) layer, belonging to Layer 1, provides information transmission services using physical channels, and the radio resource control (RRC) layer, located at Layer 3, controls radio resources between the UE and the network. To this end, the RRC layer exchanges RRC messages between the UE and the base station layer.

[0048] Figure 3 A radio protocol architecture according to an embodiment of the present disclosure is shown. Figure 3The embodiments of can be combined with various embodiments of the present disclosure. Specifically, Figure 3 (a) in FIG. 1 shows a radio protocol stack for the user plane of Uu communication, and Figure 3 (b) in FIG. 1 shows the radio protocol stack of the control plane for Uu communication. Figure 3 (c) in FIG. 1 shows a radio protocol stack for the user plane of SL communication, and Figure 3 (d) in FIG. 5 shows the radio protocol stack of the control plane for SL communication.

[0049] Reference Figure 3 The physical layer provides information transfer services to upper layers via physical channels. The physical layer is connected to the media access control (MAC) layer, which is the upper layer of the physical layer, via transport channels. Data is transferred between the MAC layer and the physical layer via transport channels. Transport channels are categorized based on how data is transmitted over the radio interface and the characteristics of the data being transmitted.

[0050] Data is transmitted between different physical layers (ie, a PHY layer of a transmitter and a PHY layer of a receiver) through a physical channel. The physical channel may be modulated using an Orthogonal Frequency Division Multiplexing (OFDM) scheme and uses time and frequency as radio resources.

[0051] The MAC layer provides services to the Radio Link Control (RLC) layer, a higher layer of the MAC layer, via logical channels. The MAC layer maps multiple logical channels to multiple transport channels. The MAC layer also provides logical channel multiplexing by mapping multiple logical channels to a single transport channel. The MAC layer provides data transmission services via logical channels.

[0052] The RLC layer performs concatenation, segmentation, and reassembly of radio link control service data units (RLC SDUs). To ensure the different quality of service (QoS) required for radio bearers (RBs), the RLC layer provides three types of operation modes: transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0053] The Radio Resource Control (RRC) layer is defined only in the control plane. The RRC layer controls logical channels, transport channels, and physical channels associated with the configuration, reconfiguration, and release of resource allocation (RBs). RBs are logical paths for data transfer between the UE and the network, provided by Layer 1 (i.e., the physical or PHY layer) and Layer 2 (i.e., the MAC layer, RLC layer, Packet Data Convergence Protocol (PDCP), and Service Data Adaptation Protocol (SDAP) layers).

[0054] The functions of the Packet Data Convergence Protocol (PDCP) in the user plane include transmission of user data, header compression and encryption. The functions of the Packet Data Convergence Protocol (PDCP) in the control plane include transmission and encryption / integrity protection of control plane data.

[0055] 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.

[0056] RB configuration refers to the process of specifying radio protocol layers and channel attributes to provide a specific service and determining corresponding detailed parameters and operation methods. RBs can be classified into two types: signaling radio bearers (SRBs) and data radio bearers (DRBs). SRBs are used as a path for transmitting RRC messages in the control plane, and DRBs are used as a path for transmitting user data in the user plane.

[0057] When an 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 may be in the RRC idle (RRC_IDLE) state. In the case of NR, an RRC inactive (RRC_INACTIVE) state is additionally defined, and the UE in the RRC_INACTIVE state may maintain its connection with the core network while releasing its connection with the BS.

[0058] The downlink transport channels for sending (or transmitting) data from the network to the UE include the broadcast channel (BCH) for sending system information and the downlink shared channel (SCH) for sending other user traffic or control messages. Traffic or control messages for 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 transport channels for sending (or transmitting) data from the UE to the network include the random access channel (RACH) for sending initial control messages and the uplink shared channel (SCH) for sending other user traffic or control messages.

[0059] 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.

[0060] Figure 4 The structure of the NR radio frame according to an embodiment of the present disclosure is shown. Figure 4The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0061] Reference Figure 4 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).

[0062] When using a normal CP, each time slot can include 14 symbols. When using an extended CP, each time slot can 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).

[0063] Table 1 shown below shows the number of symbols per slot (N) according to SCS setting (μ) in the case of adopting normal CP. slot symb ), the number of time slots per frame (N frame,μ slot ) and the number of slots per subframe (N subframe,μ slot ).

[0064] [Table 1]

[0065] <![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

[0066] 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.

[0067] [Table 2]

[0068] <![CDATA[SCS(15*2 μ )]]> <![CDATA[N slot symb ]]> <![CDATA[N frame,μ slot ]]> <![CDATA[N subframe,μ slot <!-- 5 -->]]> 60KHz (μ=2) 12 40 4

[0069] In the NR system, OFDM(A) parameter sets (e.g., SCS, CP length, etc.) may be configured differently between multiple cells integrated into one UE. Therefore, the (absolute time) duration (or interval) of a time resource (e.g., subframe, time slot, or 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.

[0070] 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 frequency bands can be supported, and with an SCS of 30kHz / 60kHz, dense urban areas, 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.

[0071] The NR frequency band can 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).

[0072] [Table 3]

[0073] Frequency range specification Corresponding frequency range Subcarrier spacing (SCS) FR1 450MHz–6000MHz 15, 30, 60kHz FR2 24250MHz–52600MHz 60, 120, 240kHz

[0074] As described above, the value of the frequency range in the NR system can 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 bands. The unlicensed bands may be used for various purposes, for example, the unlicensed bands are used for vehicle-specific communications (e.g., autonomous driving).

[0075] [Table 4]

[0076] Frequency range specification Corresponding frequency range Subcarrier spacing (SCS) FR1 410MHz–7125MHz 15, 30, 60kHz FR2 24250MHz–52600MHz 60, 120, 240kHz

[0077] Figure 5 The structure of the time slot of the NR frame 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.

[0078] Reference Figure 5 A slot includes multiple symbols in the time domain. For example, in the case of normal CP, one slot may include 14 symbols. For example, in the case of extended CP, one slot may include 12 symbols. Alternatively, in the case of normal CP, one slot may include 7 symbols. However, in the case of extended CP, one slot may include 6 symbols.

[0079] 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 activated BWPs. 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.

[0080] Hereinafter, the bandwidth part (BWP) and the carrier will be described in detail.

[0081] 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.

[0082] For example, the BWP may be at least 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 DL BWPs other than the activated DL BWP on the primary cell (PCell). For example, the UE may not receive the PDCCH, physical downlink shared channel (PDSCH), or channel state information-reference signal (CSI-RS) (excluding RRM) outside the activated DL BWP. For example, the UE may not trigger channel state information (CSI) reporting for inactive DL BWPs. For example, the UE may not transmit the physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH) outside the activated UL BWP. For example, in the downlink, the initial BWP may be given as a set of contiguous RBs for the remaining minimum system information (RMSI) control resource set (CORESET) (configured by the physical broadcast channel (PBCH)). For example, in the uplink, the initial BWP may be given by the system information block (SIB) for the random access procedure. For example, the default BWP may be configured by higher layers. 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 UE's active BWP to the default BWP.

[0083] In addition, a BWP can be defined for SL. The same SL BWP can be used in transmission and reception. For example, a transmitting UE can send a SL channel or SL signal on a specific BWP, and a receiving UE can receive a SL channel or SL signal on a 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 BS / network. For example, the UE can receive a configuration for the Uu BWP from the BS / network. The SLBWP is (pre-)configured in the carrier for out-of-coverage NR V2X UEs and RRC_IDLE UEs. For a UE in RRC_CONNECTED mode, at least one SL BWP can be activated in the carrier.

[0084] Figure 6 An example of a BWP according to an embodiment of the present disclosure is shown. Figure 6 The embodiments of can be combined with various embodiments of the present disclosure. Figure 6 In the embodiment, the number of BWPs is 3.

[0085] Reference Figure 6 , Common Resource Blocks (CRBs) may be carrier resource blocks numbered from one end of the carrier frequency band to the other. Additionally, PRBs may be resource blocks numbered within each BWP. Point A may indicate a common reference point for the resource block grid.

[0086] 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 a carrier, and subcarrier 0 of all parameter sets (e.g., all parameter sets supported by the network on the corresponding carrier) is aligned in point A. For example, the offset can be the PRB distance between the lowest subcarrier in a given parameter set and point A. For example, the bandwidth can be the number of PRBs in a given parameter set.

[0087] Hereinafter, V2X or SL communication will be described.

[0088] The side link synchronization signal (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 acquisition of detailed synchronization and for detection of a synchronization signal ID.

[0089] The physical sidelink broadcast channel (PSBCH) can be a (broadcast) channel for transmitting default (system) information, which must be known by the UE 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).

[0090] S-PSS, S-SSS and PSBCH can 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 can 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 can exist within the (pre-) configured sidelink (SL) BWP. For example, the S-SSB can have a bandwidth of 11 resource blocks (SBs). For example, the PSBCH can exist across 11 RBs. In addition, the frequency position of the S-SSB can be (pre-) configured. Therefore, the UE does not have to perform hypothesis detection at the frequency to discover the S-SSB in the carrier.

[0091] Figure 7 A UE performing V2X or SL communication according to an embodiment of the present disclosure is shown. Figure 7 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0092] Reference Figure 7In V2X or SL communication, the term "UE" generally refers to a user's UE. However, if a network device such as a base station (BS) transmits / receives signals according to a communication scheme between UEs, the BS may also be considered a type of UE. For example, UE 1 may be first device 100, and UE 2 may be second device 200.

[0093] For example, UE 1 can select a resource unit corresponding to a specific resource from a resource pool representing a set of resources. Furthermore, UE 1 can transmit an SL signal using the resource unit. For example, a resource pool in which UE 1 can transmit a signal can be configured for UE 2, which is a receiving UE, and UE 1's signal can be detected in the resource pool.

[0094] Here, if UE 1 is within the connection range of the BS, the BS can inform UE 1 of the resource pool. Otherwise, if UE 1 is out of the connection range of the BS, another UE can inform UE 1 of the resource pool, or UE 1 can use a pre-configured resource pool.

[0095] Generally, a resource pool can be configured in units of multiple resources, and each UE can select one or more units of resources to use in its SL signaling.

[0096] Hereinafter, resource allocation in SL will be described.

[0097] Figure 8 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. Figure 8 The embodiments of the present disclosure may be combined with the various embodiments of the present disclosure. In the various embodiments of the present disclosure, a transmission mode may be referred to as a mode or a resource allocation mode. Hereinafter, for ease of explanation, in LTE, a transmission mode may be referred to as an LTE transmission mode. In NR, a transmission mode may be referred to as an NR resource allocation mode.

[0098] For example, Figure 8 (a) in FIG. 1 shows UE operations related to LTE transmission mode 1 or LTE transmission mode 3. Alternatively, for example, Figure 8 (a) in FIG. 4 shows UE operations related to NR resource allocation mode 1. For example, LTE transmission mode 1 can be applied to conventional SL communication, and LTE transmission mode 3 can be applied to V2X communication.

[0099] For example, Figure 8 (b) in FIG. 4 shows UE operations related to LTE transmission mode 2 or LTE transmission mode 4. Alternatively, for example, Figure 8 (b) in FIG. 4 shows UE operations related to NR resource allocation mode 2.

[0100] Reference Figure 8 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 (e.g., downlink control information (DCI)) or RRC signaling (e.g., configuration grant type 1 or configuration grant type 2), and UE 1 may perform V2X or SL communication with respect to UE 2 according to the resource scheduling. For example, UE 1 may transmit sidelink control information (SCI) to UE 2 through a physical sidelink control channel (PSCCH), and thereafter transmit data based on the SCI to UE 2 through a physical sidelink shared channel (PSSCH).

[0101] Reference Figure 8 (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, which has autonomously selected resources in the resource pool, can send SCI to UE 2 via PSCCH, and thereafter send data based on the SCI to UE 2 via PSSCH.

[0102] Figure 9 Three broadcast types are shown according to embodiments of the present disclosure. Figure 9 The embodiments of can be combined with various embodiments of the present disclosure. Specifically, Figure 9 (a) shows broadcast type SL communication, Figure 9 (b) in FIG. 4 shows unicast type SL communication, and Figure 9 (c) in FIG. 5 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.

[0103] Meanwhile, 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. Additionally / alternatively, for example, the TX UE may be a UE that transmits a SL CSI-RS and / or a SL CSI report request indicator to a (target) RX UE. Additionally / alternatively, for example, the TX UE may be a UE that transmits a (control) channel (e.g., PSCCH, PSSCH, etc.) and / or a reference signal (e.g., DM-RS, CSI-RS, etc.) on a (control) channel for use in a SL radio link monitoring (RLM) operation and / or a SL radio link failure (RLF) operation of the (target) RX UE.

[0104] Meanwhile, in the present disclosure, for example, a receiving UE (RX UE) may be a UE that transmits SL HARQ feedback to a transmitting UE (TX UE) based on whether decoding of data received from the TX UE is successful and / or whether detection / decoding of a PSCCH (related to PSSCH scheduling) transmitted by the TX UE is successful. Additionally / alternatively, for example, the RX UE may be a UE that performs SL CSI transmission to the TX UE based on an SL CSI-RS and / or an SL CSI report request indicator received from the TX UE. Additionally / alternatively, for example, the RX UE may be a UE that transmits an SL (L1) reference signal received power (RSRP) measurement value measured based on an SL (L1) RSRP report request indicator and / or a (predefined) reference signal received from the TX UE to the TX UE. Additionally / alternatively, for example, the RX UE may be a UE that transmits data of the RX UE to the TX UE. Additionally / alternatively, for example, the RX UE may be a UE that performs a SL RLM operation and / or a SL RLF operation based on a (pre-configured) (control) channel and / or a reference signal on a (control) channel received from the TX UE.

[0105] Meanwhile, in the present disclosure, for example, when the RX UE transmits SL HARQ feedback information for the PSSCH and / or PSCCH received from the TX UE, the following options or some of the following options may be considered. Here, for example, the following options or some of the following options may be applied restrictively only when the RX UE successfully decodes / detects the PSCCH that schedules the PSSCH.

[0106] (1) Multicast option 1: No acknowledgement (NACK) information may be sent to the TX UE only when the RX UE fails to decode / receive the PSSCH received from the TX UE.

[0107] (2) Multicast option 2: If the RX UE successfully decodes / receives the PSSCH received from the TX UE, ACK information may be sent to the TX UE, and if the RX UE fails to decode / receive the PSSCH, NACK information may be sent to the TX UE.

[0108] Meanwhile, in the present disclosure, for example, the TX UE may send the following information or some of the following information to the RX UE via the SCI.Herein, for example, the TX UE may send all or some of the following information to the RX UE via the first SCI and / or the second SCI.

[0109] -PSSCH (and / or PSCCH) related resource allocation information (e.g., location / number of time / frequency resources, resource reservation information (e.g., time period))

[0110] -SL CSI report request indicator or SL (L1) reference signal received power (RSRP) (and / or SL (L1) reference signal received quality (RSRQ) and / or SL (L1) reference signal strength indicator (RSSI)) report request indicator

[0111] -SL CSI transmission indicator (or SL (L1) RSRP (and / or SL (L1) RSRQ and / or SL (L1) RSSI) information transmission indicator) (on PSSCH)

[0112] - Modulation and Coding Scheme (MCS) information

[0113] -TX power information

[0114] - L1 destination ID information and / or L1 source ID information

[0115] -SL HARQ process ID information

[0116] -New Data Indicator (NDI) information

[0117] - Redundancy Version (RV) information

[0118] -QoS information (for example, priority information) (related to the transmission service / packet)

[0119] - Information on the number of antenna ports used for (transmitting) SL CSI-RS or SL CSI-RS transmission indicator

[0120] - Target RX UE location (or distance range) information or TX UE location information (for which SL HARQ feedback is requested)

[0121] Reference signal (e.g., DM-RS, etc.) information related to decoding (and / or channel estimation) of data transmitted via the PSSCH. For example, information related to the (time-frequency) mapping resource pattern of the DM-RS, rank information, antenna port index information, information about the number of antenna ports, etc.

[0122] Meanwhile, in the present disclosure, for example, because the TX UE can transmit the SCI, the first SCI, and / or the second SCI to the RX UE via the PSCCH, the PSCCH can be replaced / replaced with the SCI and / or the first SCI and / or the second SCI. Additionally / alternatively, the SCI can be replaced / replaced with the PSCCH and / or the first SCI and / or the second SCI. Additionally / alternatively, for example, because the TX UE can transmit the second SCI to the RX UE via the PSSCH, the PSSCH can be replaced / replaced with the second SCI.

[0123] Meanwhile, in the present disclosure, for example, if the SCI configuration field is divided into two groups in consideration of a (relatively) high SCI payload size, the first SCI including the first SCI configuration field group may be referred to as the first SCI, and the second SCI including the second SCI configuration field group may be referred to as the second SCI. Furthermore, for example, the first SCI may be transmitted to the receiving UE via the PSCCH. Furthermore, for example, the second SCI may be transmitted to the receiving UE via a (separate) PSCCH or may be piggybacked and transmitted together with data via the PSSCH.

[0124] Meanwhile, in the present disclosure, for example, the term “configured / configured” or the term “defined / defined” may refer to (pre) configuration from a base station or a network (for each resource pool) (through predefined signaling (e.g., SIB, MAC, RRC, etc.)).

[0125] Meanwhile, in the present disclosure, for example, since RLF may be determined based on an Out-of-Sync (OOS) indicator or an In-Sync (IS) indicator, RLF may be replaced / replaced with the Out-of-Sync (OOS) indicator or the In-Sync (IS) indicator.

[0126] Meanwhile, in the present disclosure, for example, RB may be replaced / replaced by a subcarrier. In addition, in the present disclosure, for example, a packet or service may be replaced / replaced by a TB or a MAC PDU based on a transmission layer.

[0127] Meanwhile, in the present disclosure, CBG may be replaced / replaced by TB.

[0128] Meanwhile, in the present disclosure, for example, the source ID may be exchanged / replaced by the destination ID.

[0129] Meanwhile, in the present disclosure, for example, the L1 ID may be replaced / replaced by the L2 ID. For example, the L1 ID may be the L1 source ID or the L1 destination ID. For example, the L2 ID may be the L2 source ID or the L2 destination ID.

[0130] At the same time, in the present disclosure, for example, the operation of the sending UE reserving / selecting / determining retransmission resources may include: the operation of 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.

[0131] Meanwhile, in the present disclosure, the sub-selection window may be replaced / substituted with the selection window and / or a preconfigured number of resource sets within the selection window, or vice versa.

[0132] Meanwhile, 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 1 UE or a MODE 1 TX UE, and a UE that performs SL communication based on SL MODE 2 may be referred to as a MODE 2 UE or a MODE 2 TX UE.

[0133] Meanwhile, 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.

[0134] Furthermore, in the present disclosure, a channel may be replaced / replaced with a signal, or vice versa. For example, the transmission / reception of a channel may include the transmission / reception of a signal. For example, the transmission / reception of a signal may include the transmission / reception of a channel. Furthermore, for example, a broadcast may be replaced / replaced with at least one of unicast, multicast, and / or broadcast, or vice versa. For example, a broadcast type may be replaced / replaced with at least one of unicast, multicast, and / or broadcast, or vice versa.

[0135] Furthermore, in the present disclosure, a resource may be exchanged / replaced with a time slot or a symbol, or vice versa. For example, a resource may include a time slot and / or a symbol.

[0136] Meanwhile, in the present disclosure, priority may be replaced / replaced with at least one of logical channel priority (LCP), latency, reliability, minimum required communication range, per-packet priority (PPP), side link radio bearer (SLRB), QoS profile, QoS parameters and / or requirements, or vice versa.

[0137] Meanwhile, in various embodiments of the present disclosure, reserved resources and / or selected resources may be exchanged / replaced with a sidelink grant (SLGRANT).

[0138] Meanwhile, in various embodiments of the present disclosure, the delay may be replaced / replaced with a packet delay budget (PDB).

[0139] Meanwhile, in various embodiments of the present disclosure, the message for triggering reporting of sidelink channel state information / sidelink channel quality information (hereinafter referred to as SL_CSI information) may be replaced / replaced with a sidelink channel state information reference signal (CSI-RS) reception.

[0140] Meanwhile, in the present disclosure, blind retransmission may refer to the TX UE performing retransmission without receiving SL HARQ feedback information from the RX UE. For example, SL HARQ feedback-based retransmission may refer to the TX UE determining whether to perform retransmission based on the SL HARQ feedback information received from the RX UE. For example, if the TX UE receives NACK and / or DTX information from the RX UE, the TX UE may perform retransmission to the RX UE.

[0141] Furthermore, in the present disclosure, for example, for convenience of description, a (physical) channel used when an RX UE transmits at least one of the following information to a TX UE may be referred to as a PSFCH.

[0142] -SL HARQ feedback, SL CSI, SL (L1) RSRP

[0143] Meanwhile, in the present disclosure, Uu channels may include UL channels and / or DL ​​channels. For example, UL channels may include PUSCH, PUCCH, Sounding Reference Signal (SRS), etc. For example, DL channels may include PDCCH, PDSCH, PSS / SSS, etc. For example, SL channels may include PSCCH, PSSCH, PSFCH, PSBCH, PSSS / SSSS, etc.

[0144] Meanwhile, in the present disclosure, the sidelink information may include at least one of a sidelink message, a sidelink packet, a sidelink service, a sidelink data, a sidelink control information, and / or a sidelink transport block (TB). For example, the sidelink information may be transmitted via the PSSCH and / or the PSCCH.

[0145] Meanwhile, in NR V2X communication or NR sidelink communication, the transmitting UE may reserve / select one or more transmission resources for sidelink transmission (e.g., initial transmission and / or retransmission), and the transmitting UE may send information about the location of the one or more transmission resources to the receiving UE.

[0146] Meanwhile, when sidelink communication is performed, a method in which the transmitting UE reserves or predetermines transmission resources for the receiving UE may be representatively as follows.

[0147] For example, the transmitting UE may perform the reservation of transmission resources based on the chain. Specifically, for example, if the transmitting UE reserves K transmission resources, the transmitting UE may send the location information of less than K transmission resources to the receiving UE through an SCI sent to the receiving UE at any (or specific) transmission time or time resource. That is, for example, the SCI may include the location information of less than K transmission resources. Alternatively, for example, if the transmitting UE reserves K transmission resources associated with a specific TB, the transmitting UE may send the location information of less than K transmission resources to the receiving UE through an SCI sent to the receiving UE at any (or specific) transmission time or time resource. That is, the SCI may include the location information of less than K transmission resources. In this case, for example, by signaling the location information of less than K transmission resources to the receiving UE via only one SCI sent by the transmitting UE at any (or specific) transmission time or time resource, performance degradation due to an excessive increase in the payload of the SCI may be prevented.

[0148] Figure 10 A method in which a UE having reserved transmission resources notifies another UE of the transmission resources according to an embodiment of the present disclosure is shown. Figure 10 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0149] Specifically, for example, Figure 10 (a) shows a method for performing chain-based resource reservation by a transmitting UE by transmitting / signaling location information of (maximum) 2 transmission resources to a receiving UE via one SCI in the case of a value of K=4. For example, Figure 10 (b) shows a method for performing chain-based resource reservation by a transmitting UE by transmitting / signaling location information of (maximum) 3 transmission resources to a receiving UE via one SCI in the case of a value of K=4. Figure 10 (a) and (b), the transmitting UE may transmit / signal only the location information of the fourth transmission-related resource to the receiving UE via the fourth (or last) transmission-related PSCCH. Figure 10 (a), the transmitting UE may transmit / signal not only the location information of the fourth transmission-related resource but also the location information of the third transmission-related resource to the receiving UE via the fourth (or last) transmission-related PSCCH. Figure 10 (b), the transmitting UE may transmit / signal not only the location information of the fourth transmission-related resource but also the location information of the second transmission-related resource and the location information of the third transmission-related resource to the receiving UE via the fourth (or last) transmission-related PSCCH. In this case, for example, Figure 10 In (a) and (b), if the transmitting UE can transmit / signal only the location information of the fourth transmission-related resources to the receiving UE via the fourth (or last) transmission-related PSCCH, the transmitting UE can set or designate the field / bit of the location information of the unused or remaining transmission resources to a preconfigured value (e.g., 0). Figure 10 In (a) and (b), if the transmitting UE can send / signal only the location information of the fourth transmission-related resources to the receiving UE via the fourth (or last) transmission-related PSCCH, the transmitting UE can set or designate the field / bit of the location information of the unused or remaining transmission resources to a preconfigured state / bit value indicating / representing the last transmission (among the 4 transmissions).

[0150] In addition, for example, the transmitting UE may perform reservation of transmission resources on a block basis. Specifically, for example, if the transmitting UE reserves K transmission resources, the transmitting UE may send the location information of the K transmission resources to the receiving UE through an SCI sent to the receiving UE at any (or specific) transmission time or time resource. That is, the SCI may include the location information of the K transmission resources. For example, if the transmitting UE reserves K transmission resources associated with a specific TB, the transmitting UE may send the location information of the K transmission resources to the receiving UE through an SCI sent to the receiving UE at any (or specific) transmission time or time resource. That is, the SCI may include the location information of the K transmission resources. For example, Figure 10 (c) shows a method in which, in the case of a value of K=4, the transmitting UE performs block-based resource reservation by signaling the location information of four transmission resources to the receiving UE via one SCI.

[0151] At the same time, in the next generation communication system, the base station can send information related to the sidelink transmission to the UE through the Uu link or interface. In this case, the UE can operate in NR sidelink resource allocation mode 1. When the UE operates in NR sidelink resource allocation mode 1, the base station can send information related to the NR sidelink transmission to the UE in the form of downlink control information (DCI) through the physical downlink control channel (PDCCH).

[0152] The PDCCH can carry downlink control information and can apply a quadrature phase shift keying (QPSK) modulation scheme. Depending on the aggregation level (AL), one PDCCH can consist of 1, 2, 4, 8, and 16 control channel elements (CCEs). One CCE can consist of 6 resource element groups (REGs). One REG can be defined as one OFDM symbol and one resource block (RB) or physical resource block (PRB). The PDCCH can be transmitted through a control resource set (hereinafter referred to as a CORESET). A CORESET can be defined as a set of REGs with a given parameter set (e.g., subcarrier spacing, cyclic prefix length, etc.). For example, multiple CORESETs for one UE can overlap in the time / frequency domain. The CORESET can be configured through system information (e.g., Master Information Block (MIB)) or UE-specific higher layer (e.g., Radio Resource Control (RRC) layer) signaling. Specifically, for example, the number of RBs and the number of symbols (up to 3) constituting the CORESET can be configured through higher layer signaling. The number of CORESETs that can be assigned to a UE may be limited by complexity considerations. For example, up to three CORESETs may be configured for a UE.

[0153] The UE can obtain the DCI sent through the PDCCH by performing decoding (e.g., blind decoding) on ​​a set of PDCCH candidates received through the Uu link or interface. The set of PDCCH candidates decoded by the UE can be defined as a PDCCH search space set. The search space set can be a common search space or a UE-specific search space. The UE can obtain DCI by monitoring the PDCCH candidates in one or more search space sets configured by the MIB or higher layer signaling. Each CORESET configuration can be associated with one or more search space sets, and each search space set can be associated with one CORESET configuration. For example, DCI can have multiple formats. Table 5 below shows the DCI format.

[0154] [Table 5]

[0155]

[0156] Referring to Table 5, for example, DCI format 0_0 may be a DCI format for scheduling PUSCH by a base station. For example, DCI format 0_0 may be a non-fallback DCI. For example, non-fallback DCI may have a fixed DCI size. For example, DCI format 0_1 ​​may be a DCI format for a base station to schedule one or more PUSCHs or to indicate downlink feedback information (CG-DFI) for configuring a licensed PUSCH. For example, DCI format 0_2 may be a DCI format for scheduling PUSCH by a base station. For example, DCI format 0_1 ​​and DCI format 0_2 may be fallback DCI. For example, fallback DCI may have a variable DCI size. For example, fallback DCI may not include some fields depending on the configured function. For example, DCI format 3_0 may be a DCI for scheduling an NR side link by a base station. For example, DCI format 3_1 may be a DCI for scheduling an LTE side link by a base station. At the same time, in sidelink communication, when the transmitting UE is within the coverage of the base station (i.e., UE within the coverage) and the transmitting UE needs to perform power control related to SL transmission based on downlink (DL) path loss (PL) according to the configuration of the base station, it is necessary to clearly define which reference signal / signal notified from the base station is used to measure the DL PL value.

[0157] For example, when the transmitting UE measures the DL PL for power control associated with SL transmission, if the transmitting UE monitors DCI 0_0, the reference signal (RS) for power control of the PUSCH scheduled by DCI 0_0 can be used, otherwise, the RS associated with the SS / PBCH block used for MIB acquisition can be used.

[0158] Therefore, based on the status / condition of the UEs within the coverage area, the reference signals for DL ​​PL measurement used for power control of SL transmission can be clearly defined / differentiated. To this end, the base station can perform necessary UL quality control by effectively predicting the interference of SL transmission of UEs within the coverage area on UL reception.

[0159] According to an embodiment of the present disclosure, if a UE is within the coverage of a base station, the UE may determine / control the sidelink (SL) transmit power based on the downlink (DL) path loss (PL). For example, a UE within the coverage may determine / control the SL transmission power based on the DL PL to reduce the interference level on the UL communication. Herein, for example, the DL PL may be derived based on a reference signal (RS) determined according to various embodiments of the present disclosure. For example, the UE may derive the DL PL based on the RS determined according to various embodiments of the present disclosure. For example, according to various embodiments of the present disclosure, the DL PL may be considered to be the DL PL used to determine the transmit power associated with a UU channel / signal (e.g., PUSCH) based on a DCI format / type. For example, according to various embodiments of the present disclosure, the DL PL may be considered to be the DL PL measured by the RS and / or a sequence associated with the UU channel / signal (e.g., synchronization (sync) sequence, PBCH DMRS). For example, hereinafter, for ease of description, the DL PL used for the above purpose may be referred to as "DL PL_SLPW."

[0160] In addition, for example, whether to apply various embodiments of the present disclosure and / or parameters related to various embodiments of the present disclosure can be specifically or differently configured based on at least one of the following: priority / type of service, QoS requirements of service (e.g., latency, reliability), congestion level of resource pool (e.g., CBR), resource pool, broadcast type (e.g., unicast, groupcast, broadcast), HARQ feedback scheme (e.g., ACK / NACK feedback, feedback of sending only NACK), SL operation mode (e.g., mode 1, mode 2), MAC PDU for which HARQ feedback is enabled, TB for which HARQ feedback is enabled, MAC PDU for which HARQ feedback is disabled, TB for which HARQ feedback is disabled, the number of SL sessions operated by or capable of being operated by the UE, the number of PSFCHs that can be sent simultaneously by the UE, the number of PSFCHs that can be received / processed simultaneously by the UE (e.g., capability of the UE), PSFCH resource period associated with the resource pool, SL sent via PUCCH Number of HARQ feedback bits / amount of information, number of PSFCH slots associated with PUCCH, number of PSSCH slots associated with the last PSFCH slot associated with PUCCH, number of PSFCHs that need to be received to configure PUCCH information, number of PSFCHs that need to be received simultaneously on the last PSFCH slot associated with PUCCH to configure PUCCH information, value of the counter sidelink assignment index field in the DG DCI, number of symbols associated with the sidelink slot on the last PSFCH slot associated with PUCCH in the resource pool, number of symbols associated with PSSCH, number of PSFCH symbols in a sidelink slot, number / position of PSFCH symbols on the last PSFCH slot associated with PUCCH, time domain pattern of PSSCH DMRS, number of PSSCH DMRS symbols, position / index of the last DMRS symbol in the sidelink slot among the PSSCH DMRS symbols, whether SL is configured CSI-RS, whether PT-RS is configured, synchronization difference between Uu communication and SL communication, whether the synchronization difference between Uu communication and SL communication exceeds a pre-configured threshold, type of HARQ codebook associated with PUCCH (e.g., semi-static codebook, dynamic codebook), number of PUSCH symbols on which PUCCH is piggybacked, number of PUSCH symbols on which PUCCH is piggybacked with PSFCH, number / position of DMRS symbols on PUSCH, Mode 1 dynamic grant, Mode 1 configured grant, SL parameter set (e.g., subcarrier spacing, CP length / type), SL parameter set associated with PSFCH, UL parameter set, UL parameter set associated with PUCCH, minimum value between SL parameter set and UL parameter set, combination of SL parameter set and UL parameter set,And / or whether the UE is in an RRC connected state or an RRC idle state with the base station / network. In this document, for example, the number of SL sessions can be one of the maximum number of SL sessions, the minimum number of SL sessions, or the average number of SL sessions. For example, the number of PSFCHs can be one of the maximum number of PSFCHs, the minimum number of PSFCHs, or the average number of PSFCHs. For example, the number of SL HARQ feedback bits can be one of the maximum number of SL HARQ feedback bits, the minimum number of SL HARQ feedback bits, or the average number of SL HARQ feedback bits. For example, the number of PSFCH time slots can be one of the maximum number of PSFCH time slots, the minimum number of PSFCH time slots, or the average number of PSFCH time slots. For example, the number of PSSCH time slots can be one of the maximum number of PSSCH time slots, the minimum number of PSSCH time slots, or the average number of PSSCH time slots. For example, the number of PSSCH time slots associated with the last PSFCH time slot associated with the PUCCH can be the number of feedback bundled PSSCH time slots associated with the last PSFCH time slot associated with a specific PUCCH. For example, the number of symbols may be one of a maximum number of symbols, a minimum number of symbols, or an average number of symbols. For example, the time domain pattern of the PSSCH DMRS may be a time domain pattern of the PSSCH DMRS associated with the resource pool and may be preconfigured. For example, the number of PSSCH DMRS symbols may be the number of symbols of the time domain DMRS pattern for the selectable PSSCH. For example, the synchronization difference between UU communication and SL communication may include at least one of the following: a boundary difference between subframes, a boundary difference between time slots, a boundary difference between symbols, or a difference between the starting points of SFN 0 and DFN 0.

[0161] Based on an embodiment of the present disclosure, condition A may include at least one of the following: the UE does not receive RS information related to DL PL_SLPW from the base station, the UE does not receive RS information related to a pre-configured UU channel / signal (e.g., PUSCH) referenced for deriving DL PL_SLPW, the UE is before receiving dedicated higher layer parameters from the base station, or the UE is in an RRC idle state. For example, if the UE corresponds to condition A, the UE may regard the DL PL measured based on the RS related to the Uu SSB used to derive MIB information as DL PL_SLPW. Various embodiments of the present disclosure related thereto will be described in detail.

[0162] For example, if the UE does not receive RS information related to DL PL_SLPW (e.g., PUSCH-PATHLOSSREFERENCERS) from the base station, the UE may regard the DL PL measured based on the RS (e.g., PBCH DMRS) related to the Uu SSB used to derive MIB information as DL PL_SLPW. For example, if the UE does not receive RS information related to DL PL_SLPW from the base station, the UE may regard the DL PL measured based on the RS and / or synchronization sequence (e.g., SSS) related to the Uu SSB used to derive MIB information and / or SIB information related to SL communication as DL PL_SLPW. For example, if the UE does not receive RS information related to DL PL_SLPW from the base station, the UE may regard the DL PL measured based on the RS and / or synchronization sequence (e.g., SSS) related to the Uu SSB used to derive MIB information and / or SIB information related to Uu communication as DL PL_SLPW. For example, if the UE does not receive RS information related to DLPL_SLPW from the base station, and if there is DLPL or RSRP measured based on RSs and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DLPL value associated with the maximum value among the multiple values ​​as the DLPL_SLPW. For example, if the UE does not receive RS information related to DLPL_SLPW from the base station, and if there is DLPL or RSRP measured based on RSs and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DLPL value associated with the minimum value among the multiple values ​​as the DLPL_SLPW. For example, if the UE does not receive RS information related to DLPL_SLPW from the base station, and if there is DLPL or RSRP measured based on RSs and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DLPL value associated with the average of the multiple values ​​as the DLPL_SLPW. For example, the average value may be a weighted average. For example, the UE may be within the coverage area of ​​the base station.

[0163] Alternatively, for example, if the UE does not receive RS information (e.g., PUSCH-PATHLOSSREFERENCERS) related to a pre-configured UU channel / signal (e.g., PUSCH) referenced for deriving DL PL_SLPW, the UE may regard the DL PL measured based on the RS (e.g., PBCH DMRS) related to the Uu SSB used to derive MIB information as DL PL_SLPW. In this document, for example, the RS information may be information used to derive DL PL. For example, if the UE does not receive RS information related to a pre-configured UU channel / signal (e.g., PUSCH) referenced for deriving DL PL_SLPW, the UE may regard the DL PL measured based on the RS and / or synchronization sequence (e.g., SSS) related to the Uu SSB used to derive MIB information and / or SIB information related to SL communication as DL PL_SLPW. For example, if the UE does not receive RS information related to a pre-configured UU channel / signal (e.g., PUSCH) referenced for deriving DL PL_SLPW, the UE may consider the DL PL measured based on the RS and / or synchronization sequence (e.g., SSS) related to the Uu SSB used to derive MIB information and / or SIB information related to Uu communication as DL PL_SLPW. For example, if the UE does not receive RS information related to a pre-configured UU channel / signal (e.g., PUSCH) referenced for deriving DL PL_SLPW, and if there is DL PL or RSRP measured based on RS and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DL PL value associated with the maximum value among the multiple values ​​as DL PL_SLPW. For example, if the UE does not receive RS information related to a pre-configured UU channel / signal (e.g., PUSCH) referenced for deriving DL PL_SLPW, and if there is DL PL or RSRP measured based on RS and / or synchronization sequences associated with multiple Uu SSBs, the UE may regard the DL PL value associated with the minimum value among multiple values ​​as DL PL_SLPW. For example, if the UE does not receive RS information related to a pre-configured UU channel / signal (e.g., PUSCH) referenced for deriving DL PL_SLPW, and if there is DL PL or RSRP measured based on RS and / or synchronization sequences associated with multiple Uu SSBs, the UE may regard the DL PL value associated with the average of the multiple values ​​as DL PL_SLPW. For example, the average value may be a weighted average. For example, the UE may be a UE within the coverage area of ​​a base station.

[0164] Alternatively, for example, if the UE is before receiving dedicated higher layer (e.g., RRC) parameters from the base station, the UE may consider the DL PL measured based on the RS (e.g., PBCH DMRS) associated with the Uu SSB used to derive MIB information as DL PL_SLPW. For example, if the UE is before receiving dedicated higher layer parameters from the base station, the UE may consider the DL PL measured based on the RS and / or synchronization sequence (e.g., SSS) associated with the Uu SSB used to derive MIB information and / or SIB information related to SL communication as DL PL_SLPW. For example, if the UE is before receiving dedicated higher layer parameters from the base station, the UE may consider the DL PL measured based on the RS and / or synchronization sequence (e.g., SSS) associated with the Uu SSB used to derive MIB information and / or SIB information related to Uu communication as DL PL_SLPW. For example, if the UE is before receiving dedicated higher layer parameters from the base station and if there is DL PL or RSRP measured based on RSs and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DL PL value associated with the maximum value among the multiple values ​​as DL PL_SLPW. For example, if the UE is before receiving dedicated higher layer parameters from the base station and if there is DL PL or RSRP measured based on RSs and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DL PL value associated with the minimum value among the multiple values ​​as DL PL_SLPW. For example, if the UE is before receiving dedicated higher layer parameters from the base station and if there is DL PL or RSRP measured based on RSs and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DL PL value associated with the average of the multiple values ​​as DL PL_SLPW. For example, the average value may be a weighted average. For example, the UE may be within the coverage area of ​​the base station.

[0165] Alternatively, for example, if the UE is in the RRC idle state, the UE may consider the DL PL measured based on the RS (e.g., PBCH DMRS) associated with the Uu SSB used to derive MIB information as DL PL_SLPW. For example, if the UE is in the RRC idle state, the UE may consider the DL PL measured based on the RS and / or synchronization sequence (e.g., SSS) associated with the Uu SSB used to derive MIB information and / or SIB information related to SL communication as DL PL_SLPW. For example, if the UE is in the RRC idle state, the UE may consider the DL PL measured based on the RS and / or synchronization sequence (e.g., SSS) associated with the Uu SSB used to derive MIB information and / or SIB information related to Uu communication as DL PL_SLPW. For example, if the UE is in the RRC idle state, and if there is DL PL or RSRP measured based on RS and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DL PL value associated with the maximum value among the multiple values ​​as DL PL_SLPW. For example, if the UE is in the RRC idle state and there is DL PL or RSRP measured based on RSs and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DL PL value associated with the minimum value among the multiple values ​​as DL PL_SLPW. For example, if the UE is in the RRC idle state and there is DL PL or RSRP measured based on RSs and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DL PL value associated with the average of the multiple values ​​as DL PL_SLPW. For example, the average value may be a weighted average. For example, the UE may be a UE within the coverage area of ​​a base station.

[0166] For example, a case where the UE is in an RRC idle state may include a case where the UE is not configured to monitor DCI format 0_0. Referring to Table 5 above, for example, DCI format 0_0 may be a DCI format for scheduling PUSCH in one cell. For example, if the UE is not configured to monitor downlink control information (DCI) format 0_0, the UE may regard the DL PL measured based on the RS (e.g., PBCH DMRS) associated with the Uu SSB for deriving MIB information as DLPL_SLPW. For example, if the UE is not configured to monitor DCI format 0_0, the UE may regard the DL PL measured based on the RS and / or synchronization sequence (e.g., SSS) associated with the Uu SSB for deriving MIB information and / or SIB information related to SL communication as DLPL_SLPW. For example, if the UE is not configured to monitor DCI format 0_0, the UE may regard the DL PL measured based on the RS and / or synchronization sequence (e.g., SSS) associated with the Uu SSB for deriving MIB information and / or SIB information related to Uu communication as DLPL_SLPW. For example, if the UE is not configured to monitor DCI format 0_0 and there is DL PL or RSRP measured based on RSs and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DL PL value associated with the maximum value among the multiple values ​​as DL PL_SLPW. For example, if the UE is not configured to monitor DCI format 0_0 and there is DL PL or RSRP measured based on RSs and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DL PL value associated with the minimum value among the multiple values ​​as DL PL_SLPW. For example, if the UE is not configured to monitor DCI format 0_0 and there is DL PL or RSRP measured based on RSs and / or synchronization sequences associated with multiple Uu SSBs, the UE may consider the DL PL value associated with the average of the multiple values ​​as DL PL_SLPW. For example, the average value may be a weighted average. For example, the UE may be a UE within the coverage area of ​​a base station.

[0167] Based on an embodiment of the present disclosure, if the UE does not correspond to the above-mentioned condition A, the UE may regard the DL PL used to determine the transmit power related to the Uu channel / signal (e.g., PUSCH) based on the DCI format / type as DL PL_SLPW. For example, the case where the UE does not correspond to the above-mentioned condition A may include at least one of the following cases: the case where the UE receives RS information related to DL PL_SLPW from the base station, the case where the UE receives RS information related to a pre-configured UU channel / signal (e.g., PUSCH) referenced for deriving DL PL_SLPW, the case where the UE receives dedicated higher layer parameters from the base station, or the case where the UE is in an RRC connected state. In this article, for example, the case where the UE is in the RRC connected state may include a case where the UE is configured to monitor DCI format 0_0.

[0168] For example, if the UE does not correspond to the above-mentioned condition A, the UE may use the DL PL used to determine the transmit power associated with the Uu channel / signal (e.g., PUSCH) scheduled by the non-fallback DCI (e.g., DCI format 0_1, DCI format 0_2) as the DL PL_SLPW. In this context, for example, an SRS Resource Indicator (SRI) field (e.g., for notifying / indicating index information of the Uu RS resource from which the DL PL for determining the transmit power associated with the PUSCH is derived) may be defined in DCI format 3_0. For example, in this case, the UE may use the DL PL derived based on the index of the Uu RS resource indicated by the SRI field as the DL PL_SLPW. Alternatively, for example, if the UE does not correspond to the above-mentioned condition A, the UE may use the DL PL used to determine the transmit power associated with the Uu channel / signal (e.g., PUSCH) scheduled by the fallback DCI (e.g., DCI format 0_0) as the DL PL_SLPW. For example, in the case of Mode 1 CG, the UE may use the DL PL derived based on the RS indicated by the CG-related parameter (e.g., CONFIGUREDGRANTCONFIG) as the DL PL_SLPW. In this article, for example, according to the parameter setting from the base station, the UE may use the DL PL derived based on the index of the Uu RS resource provided by the PUCCH-related parameter (e.g., PUCCH-SPATIALRELATIONINFO) as the DL PL_SLPW. For example, if the PUCCH-related parameter (e.g., PUCCH-SPATIALRELATIONINFO) is configured / present for the active UL BWP, the UE may regard the DL PL derived based on the RS related to the PUCCH-SPATIALRELATIONINFO for the PUCCH resource with the lowest index as the DL PL_SLPW. That is, for example, the UE can reuse the operation of fallback DCI. For example, the UE may use the DL PL derived based on the index of the Uu RS resource provided by the PUSCH-related parameter (e.g., PUSCH-PATHLOSSREFERENCERS-ID=0) as the DL PL_SLPW. For example, the UE may regard the DL PL derived from the RS with respect to the case where the PUSCH-PATHLOSSREFERENCERS-ID value is 0 as DLPL_SLPW. For example, the UE may reuse the operation of fallback DCI when there is no spatial setting for PUCCH, or the operation of non-fallback DCI without SRI. For example, the UE may use the DL PL derived from the index of the Uu RS resource provided by the transmission configuration indication (TCI) associated with the CORESET with the lowest index on the active DL BWP as DLPL_SLPW.For example, the UE may consider the DL PL derived from the RS associated with the TCI of the CORESET with the lowest index on the active DL BWP for the scheduling cell as DL PL_SLPW. For example, it may be the case that there is no spatial setting for PUCCH in the fallback DCI and a specific parameter (e.g., ENABLEDEFAULTBEAMP1FORPUSCH0_0) is given. For example, the spatial setting may be a spatial relationship setting.

[0169] For example, if the UE is in an RRC connected state, the UE may use the DL PL used to determine the transmit power associated with a Uu channel / signal (e.g., PUSCH) scheduled by a non-fallback DCI (e.g., DCI format 0_1, DCI format 0_2) as the DL PL_SLPW. Here, for example, an SRS Resource Indicator (SRI) field (e.g., for notifying / indicating index information of a Uu RS resource from which the DL PL for determining the transmit power associated with the PUSCH is derived) may be defined in DCI format 3_0. In this case, for example, the UE may use the DL PL derived based on the index of the Uu RS resource indicated by the SRI field as the DL PL_SLPW. Alternatively, for example, if the UE is in an RRC connected state, the UE may use the DL PL used to determine the transmit power associated with a Uu channel / signal (e.g., PUSCH) scheduled by a fallback DCI (e.g., DCI format 0_0) as the DL PL_SLPW. For example, in the case of Mode 1CG, the UE may use the DL PL derived from the RS indicated by CONFIGUREDGRANTCONFIG as the DL PL_SLPW. In this context, for example, based on the parameter setting from the base station, the UE may use the DL PL derived from the index of the Uu RS resource provided by PUCCH-SPATIALRELATIONINFO as the DL PL_SLPW. For example, if PUCCH-SPATIALRELATIONINFO is configured / present for the active UL BWP, the UE may consider the DL PL derived from the RS associated with the PUCCH-SPATIALRELATIONINFO for the PUCCH resource with the lowest index as the DL PL_SLPW. That is, for example, the UE may reuse the fallback DCI operation. For example, the UE may use the DL PL derived from the index of the Uu RS resource provided by PUSCH-PATHLOSSREFERENCERS-ID=0 as the DL PL_SLPW. For example, the UE may consider the DL PL derived from the RS relative to the case where the PUSCH-PATHLOSSREFERENCERS-ID value is 0 as the DL PL_SLPW. For example, the UE may reuse the operation of fallback DCI when there is no spatial configuration for PUCCH, or the operation of non-fallback DCI without SRI. For example, the UE may use the DL PL derived based on the index of the Uu RS resource provided by the transmission configuration indication (TCI) associated with the CORESET with the lowest index on the active DL BWP as DLPL_SLPW. For example, the UE may regard the DL PL derived based on the RS associated with the TCI of the CORESET with the lowest index on the active DL BWP for scheduling the cell as DLPL_SLPW.For example, there may be a case where there is no space setting for PUCCH in the fallback DCI and ENABLEDEFAULTBEAMP1FORPUSCH0_0 is given.

[0170] For example, if the UE is configured to monitor non-fallback DCI, the UE may use the DL PL used to determine the transmit power associated with the Uu channel / signal (e.g., PUSCH) scheduled by the non-fallback DCI (e.g., DCI format 0_1, DCI format 0_2) as the DL PL_SLPW. In this context, for example, an SRS Resource Indicator (SRI) field (e.g., for notifying / indicating index information of the Uu RS resource from which the DL PL for determining the transmit power associated with the PUSCH is derived) may be defined in DCI format 3_0. For example, in this case, the UE may use the DL PL derived based on the index of the Uu RS resource indicated by the SRI field as the DL PL_SLPW.

[0171] Alternatively, for example, if the UE is configured to monitor DCI format 0_0, the UE may use the DL PL used to determine the transmit power associated with the Uu channel / signal (e.g., PUSCH) scheduled by DCI format 0_0 as the DL PL_SLPW. For example, in the case of mode 1CG, the UE may use the DL PL derived based on the RS indicated by CONFIGUREDGRANTCONFIG as the DL PL_SLPW. In this context, for example, based on parameter settings from the base station, the UE may use the DL PL derived based on the index of the Uu RS resource provided by PUCCH-SPATIALRELATIONINFO as the DL PL_SLPW. For example, if PUCCH-SPATIALRELATIONINFO is configured / present for the active UL BWP, the UE may use the DL PL derived based on the RS associated with the PUCCH-SPATIALRELATIONINFO for the PUCCH resource with the lowest index as the DL PL_SLPW. That is, for example, the UE may reuse the operation of fallback DCI. For example, the UE may use the DL PL derived based on the index of the Uu RS resource provided by PUSCH-PATHLOSSREFERENCERS-ID=0 as the DL PL_SLPW. For example, the UE may consider the DL PL derived based on the RS relative to the case where the PUSCH-PATHLOSSREFERENCERS-ID value is 0 as the DL PL_SLPW. For example, the UE may reuse the operation of the fallback DCI when there is no spatial setting for the PUCCH, or the operation of the non-fallback DCI without SRI. For example, the UE may use the DL PL derived based on the index of the Uu RS resource provided by the transmission configuration indication (TCI) associated with the CORESET with the lowest index on the active DL BWP as the DL PL_SLPW. For example, the UE may consider the DL PL derived based on the RS associated with the TCI of the CORESET with the lowest index on the active DL BWP for the scheduling cell as the DL PL_SLPW. For example, there may be a case where there is no spatial setting for the PUCCH in the fallback DCI and ENABLEDEFAULTBEAMP1FORPUSCH0_0 is given.

[0172] Based on the embodiments of the present disclosure, the UE may report to the base station through pre-configured signaling (e.g., PUCCH, PUSCH) the RS / sequence information used to derive DLPL_SLPW to determine the power associated with SL transmission. For example, the UE may report to the base station through a pre-configured information format (e.g., MAC CE, UCI) the RS / sequence information used to derive DLPL_SLPW to determine the power associated with SL transmission. In this document, for example, the RS / sequence information may include at least one of the RS / sequence information preferred by the UE, the RS / sequence information used by the UE, the RS / sequence that satisfies a pre-configured condition, or the RS / sequence information that satisfies a condition pre-configured from the base station. For example, the RS / sequence information may include an index of a Uu channel / signal related to a resource index (e.g., an SSB index). In this document, for example, the RS / sequence information that satisfies the pre-configured condition may be the RS / sequence information that measures the lowest PL value and / or the lowest RSRP value. For example, the RS / sequence information that satisfies the pre-configured condition may be the RS / sequence information that measures a PL value below a pre-configured threshold and / or an RSRP value below a pre-configured threshold. Alternatively, for example, the RS / sequence information that satisfies the preconfigured condition may be the RS / sequence information for which the highest PL value and / or the lowest RSRP value are measured. For example, the RS / sequence information that satisfies the preconfigured condition may be the RS / sequence information for which a PL value greater than a preconfigured threshold and / or an RSRP value greater than a preconfigured threshold are measured. In this context, for example, the PL value may be an average PL value. Alternatively, for example, the RS / sequence information that satisfies the preconfigured condition may be the RS / sequence information for which the DL PL is measured for determining the power associated with the most recently performed UL channel / signaling (e.g., PUSCH) transmission. For example, the RS / sequence information that satisfies the preconfigured condition may be the RS / sequence information for which the DL PL is measured for determining the power associated with the most recently performed UL channel / signaling (e.g., PUSCH) transmission. For example, the RS / sequence information that satisfies the preconfigured condition may be the RS / sequence information for which the DL PL and / or RSRP are measured for determining the power associated with the UL channel / signaling (e.g., PUSCH) transmission performed within a preconfigured time window (hereinafter, PATS_TWIN). Herein, for example, the DL PL and / or RSRP may be the highest value. Alternatively, for example, the DL PL and / or RSRP may be the lowest value. In addition, for example, the UE may report information about the DL PL / RSRP to the base station through pre-configured signaling, where the DL PL / RSRP is used to determine the power associated with UL channel / signal (e.g., PUSCH) transmission performed within the PAST_TWIN.For example, the UE may report information about DL PL / RSRP to the base station using a preconfigured information format, where the DL PL / RSRP is used to determine the power associated with UL channel / signal (e.g., PUSCH) transmission performed within PAST_TWIN. In this context, for example, the information about DL PL / RSRP may include at least one of average value information about DL PL / RSRP, maximum value information about DL PL / RSRP, and minimum value information about DL PL / RSRP.

[0173] Based on the embodiments of the present disclosure, the UE may simultaneously consider all UL / SL TXs that overlap in the time domain (e.g., UL SLOT I1, UL SLOT I1+1, SL SLOT I2-1, SL SLOT I2, SL SLOT I2+1), and the UE may determine whether to skip the transmission of the TX that overlaps with the TX with the highest priority according to a pre-configured UL / SL priority sorting rule. In addition, for example, the UE may repeat the above process for the remaining TXs. For example, the remaining TXs may include at least one of the TXs to which the above process is not applied / checked or the TXs for which transmission is not skipped.

[0174] Based on an embodiment of the present disclosure, when a UE sends SL HARQ feedback information to a base station via a PUCCH, the number of bits (hereinafter, SLUCI_NUM) used to determine a power offset value (hereinafter, SLPC_OFFVAL) associated with PUCCH transmission may be assumed / defined according to the following embodiment. For example, SLUCI_NUM may be the number of bits used for available SL HARQ feedback. For example, as SLUCI_NUM increases, the value of SLPC_OFFVAL may increase based on a preconfigured formula.

[0175] Based on an embodiment, if the TX UE does not perform PSSCH / PSCCH transmission because there is no data to send, when counting SLUCI_NUM, the UE may not reflect at least one of the following: ACK information / bit reported through PUCCH, NACK information / bit reported through PUCCH for an additional retransmission resource request related to blind retransmission (for example, a MAC PDU / TB with HARQ feedback disabled), ACK information / bit reported through PUCCH when (one or more) additional retransmission resources related to blind retransmission are no longer required, NACK information / bit reported through PUCCH by the TX UE discarding all PSSCH / PSCCH transmissions related to a specific TB according to a pre-configured priority sorting rule, HARQ information / bit related to a case where actual SL MAC PDU / TB transmission is not performed, HARQ information / bit related to a SL MAC PDU / TB whose transmission is skipped (for example, when a semi-static HARQ codebook is applied), HARQ information / bit related to the CG, or HARQ information / bit related to the DG. For example, the UE may apply / calculate SLPC_OFFVAL based on different increment types / parameters pre-configured for the above information / bits.

[0176] Based on the embodiment, the UE may apply / calculate SLPC_OFFVAL based on the increment type / parameters pre-configured differently for DG and CG. For example, the UE may apply / calculate SLPC_OFFVAL based on the increment type / parameters pre-configured independently for DG and CG.

[0177] Based on the embodiment, the UE may apply / calculate SLPC_OFFVAL based on the increment type / parameter pre-configured differently between the case where the NR SL is scheduled by LTE Uu and the case where the NR SL is scheduled by NR Uu. For example, the UE may apply / calculate SLPC_OFFVAL based on the increment type / parameter pre-configured independently between the case where the NR SL is scheduled by LTE Uu and the case where the NR SL is scheduled by NR Uu. For example, the NR SL may be an NR Mode 1 SL.

[0178] Based on the embodiments of the present disclosure, if one UL TX and multiple SL TX overlap in the time domain, the UE may determine the channel / signal whose transmission is skipped according to the following embodiments. Alternatively, for example, if one SL TX and multiple UL TX overlap in the time domain, the UE may determine the channel / signal whose transmission is skipped according to the following embodiments. For example, the case of skipping the transmission of a channel / signal may be a case where UL TX and SL TX are performed on the same carrier.

[0179] For example, for UL TX and SL TX with LCH priority, the MAC layer may prioritize channels / signals for which transmissions are skipped based on a pre-configured UL / SL prioritization rule. Subsequently, for the remaining UL TX and SL TX whose transmissions are not skipped, the PHY layer may determine channels / signals for which transmissions are skipped based on a pre-configured UL / SL prioritization rule. For example, the remaining UL TX and SL TX whose transmissions are not skipped may not have LCH priority. For example, the pre-configured UL / SL prioritization rule of the MAC layer and the pre-configured UL / SL prioritization rule of the PHY layer may be different.

[0180] In addition, the UE may determine the transmit power of the S-SS / PSBCH block taking into account path loss. For example, the UE may determine the path loss based on RS resources. For example, if the UE is configured to monitor the PDCCH to detect DCI format 0_0, the RS resources may be the resources used by the UE to determine the power of PUSCH transmissions scheduled by DCI format 0_0. Alternatively, for example, if the UE is not configured to monitor the PDCCH to detect DCI format 0_0, the RS resources may be the resources corresponding to the SS / PBCH block used by the UE to obtain the MIB.

[0181] In addition, the UE may determine the transmit power of the PSSCH taking into account path loss. For example, the UE may determine the path loss based on RS resources. For example, if the UE is configured to monitor the PDCCH to detect DCI format 0_0, the RS resources may be the resources used by the UE to determine the power of PUSCH transmissions scheduled by DCI format 0_0. Alternatively, for example, if the UE is not configured to monitor the PDCCH to detect DCI format 0_0, the RS resources may be the resources corresponding to the SS / PBCH blocks used by the UE to obtain the MIB.

[0182] In addition, for example, the UE may determine the transmit power of the PSCCH based on the determined transmit power of the PSSCH.

[0183] In addition, the UE may determine the transmit power of the PSFCH taking into account path loss. For example, the UE may determine the path loss based on RS resources. For example, if the UE is configured to monitor the PDCCH to detect DCI format 0_0, the RS resources may be the resources used by the UE to determine the power of PUSCH transmissions scheduled by DCI format 0_0. Alternatively, for example, if the UE is not configured to monitor the PDCCH to detect DCI format 0_0, the RS resources may be the resources corresponding to the SS / PBCH blocks used by the UE to obtain the MIB.

[0184] Figure 11A process in which a transmitting UE determines power related to SL transmission and performs SL transmission based on the determined power according to an embodiment of the present disclosure is shown. Figure 12 The state of the UE according to the embodiment of the present disclosure is shown. Figure 13 The PUSCH within the window pre-configured by the UE according to an embodiment of the present disclosure is shown. Figures 11 to 13 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0185] refer to Figure 11 In step S1110, the transmitting UE may determine the SL transmit power based on the downlink path loss (hereinafter referred to as DLPL). For example, the SL transmission may include at least one of S-SS / PSBCH block transmission, PSCCH transmission, PSSCH transmission, or PSFCH transmission.

[0186] For example, the SL transmit power can be determined differently based on at least one of the following: service priority, type of service, quality of service (QoS) requirements, resource pool congestion level, broadcast type, HARQ feedback scheme, SL operation mode, whether HARQ feedback is enabled, the number of SL sessions, UE capabilities, PSFCH resource period, the number of SL HARQ feedback bits sent through the physical uplink control channel (PUCCH), the number of PSFCH time slots associated with PUCCH, the number of PSFCHs required to configure PUCCH information, the number of symbols associated with SL time slots in the resource pool, information related to PSSCH demodulation reference signal (DM-RS), information related to whether SL channel state information (CSI)-RS is configured, information related to whether PT-RS is configured, information related to the synchronization difference between UU communication and SL communication, HARQ codebook type related to PUCCH, the number of PUSCH symbols carrying PUCCH, mode 1 dynamic grant, configuration grant, SL parameter set or uplink parameter set.

[0187] In step S1120, the transmitting UE may send RS information related to SL transmit power to the base station. For example, the transmitting UE may send RS information related to SL transmit power to the base station through pre-configured signaling. For example, the transmitting UE may send RS information related to SL transmit power to the base station through a pre-configured information format. For example, the pre-configured signaling may include at least one of PUCCH and PUSCH. For example, the pre-configured information format may include at least one of MAC CE and UCI. For example, the RS information may be RS information that meets a pre-configured condition. For example, the RS information may include at least one of the following: information about an RS whose path loss value is measured to be lower than a pre-configured threshold, information about an RS whose RSRP value is measured to be higher than a pre-configured threshold, or information about an RS whose path loss is measured for determining the power associated with the transmission of an uplink channel performed within a pre-configured time window. For example, the RS information may include at least one of the following: information about an RS whose path loss value is measured to be higher than a preconfigured threshold, information about an RS whose RSRP value is measured to be lower than a preconfigured threshold, or information about an RS whose path loss is measured for determining the power associated with transmission of an uplink channel performed within a preconfigured time window. For example, the RS information may include an index of a Uu channel / signal associated with a resource index (e.g., an SSB index). For example, the RS information may include information about a sequence.

[0188] refer to Figure 13For example, a transmitting UE may transmit to the base station information regarding RSs for which path loss was measured to determine power associated with the most recent uplink channel transmission performed within a preconfigured time window. For example, the RS measurement information may include the RS for which the highest DL PL was measured. For example, the RS measurement information may include the RS for which the lowest DL PL was measured. For example, the transmitting UE may transmit to the base station information regarding DL PL and / or RSRP used to determine power associated with the most recent uplink channel transmission performed within the preconfigured time window. For example, the uplink channel may be the PUSCH. For example, the preconfigured time window may be a time window prior to the current time of the transmitting UE. For example, the transmitting UE may transmit to the base station, via preconfigured signaling, information regarding RSs for which path loss was measured to determine power associated with uplink channel transmissions performed within the preconfigured time window, as well as information regarding DL PL and / or RSRP used to determine power associated with uplink channel transmissions performed within the preconfigured time window. For example, the information regarding DL PL and / or RSRP may include an average DL PL and / or an average RSRP. For example, the information on DL PL and / or RSRP may include a maximum value of DL PL and / or a maximum value of RSRP. For example, the information on DL PL and / or RSRP may include a minimum value of DL PL and / or a minimum value of RSRP.

[0189] In addition, for example, the above-mentioned step S1120 can be performed before step S1110 or after step S1130.

[0190] In step S1130, the transmitting UE may perform SL transmission to the receiving UE based on the determined SL transmit power. For example, based on being configured to monitor DCI format 0_0, the transmitting UE may determine the downlink path loss based on a first RS used for power control associated with the PUSCH transmission scheduled by DCI format 0_0. For example, the first RS may be an RS based on parameters configured by the base station. For example, the first RS may be an RS based on parameters of the lowest-indexed PUCCH resource on the active uplink BWP. For example, the parameters configured by the base station may include ID information of a reference RS for path loss associated with the PUSCH. For example, the first RS may be an RS based on an ID value of 0 for a reference RS for path loss associated with the PUSCH. For example, based on not being configured to monitor DCI format 0_0, the transmitting UE may determine the downlink path loss based on a second RS associated with a synchronization signal block (SSB) for obtaining the MIB. For example, the SSB may include a physical broadcast channel (PBCH), a primary synchronization signal (PSS), and a secondary synchronization signal (SSS). For example, the second RS may be a PBCH demodulation reference signal (DM-RS) or an SSS.

[0191] refer to Figure 12 For example, monitoring of DCI format 0_0 may be performed based on the first device being in the RRC_CONNECTED state. That is, for example, if the transmitting UE is within the coverage of the base station and is in the RRC_CONNECTED state, the transmitting UE may be configured to monitor DCI format 0_0. Alternatively, for example, monitoring of DCI format 0_0 may not be performed based on the first device being in the RRC_IDLE state. That is, for example, if the transmitting UE is within the coverage of the base station and is in the RRC_IDLE state, the transmitting UE may be configured not to monitor DCI format 0_0.

[0192] For example, based on the transmitting UE being configured to monitor DCI format 0_1 ​​or DCI format 0_2, DCI format 3_0 may include a Sounding Reference Signal Resource Indicator (SRI) field. For example, the SRI field may include RS information used to determine transmit power associated with a PUSCH transmission. For example, the transmitting UE may determine downlink path loss based on a third RS associated with the SRI field.

[0193] Figure 14 A method for a first device to perform SL transmission based on power associated with the SL transmission according to an embodiment of the present disclosure is shown. Figure 14 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0194] refer to Figure 14In step S1410, the first device 100 may determine the power associated with SL transmission based on the downlink path loss. For example, SL transmission may include at least one of S-SS / PSBCH block transmission, PSCCH transmission, PSSCH transmission, or PSFCH transmission.

[0195] In step S1420, the first device 100 may perform SL transmission based on power associated with SL transmission. For example, based on being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a first RS used for power control associated with PUSCH transmission scheduled by DCI format 0_0. For example, based on not being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a second RS associated with an SSB for obtaining an MIB. For example, the SSB may include a PBCH, a PSS, and an SSS. For example, based on the first device 100 being in an RRC_CONNECTED state, monitoring of DCI format 0_0 may be performed. For example, based on the first device 100 being in an RRC_IDLE state, monitoring of DCI format 0_0 may not be performed.

[0196] For example, the first RS may be an RS based on parameters configured by the base station. For example, the first RS may be an RS based on parameters of the physical uplink control channel (PUCCH) resource with the lowest index on the active uplink bandwidth part (BWP). For example, the parameters configured by the base station may include ID information of a reference RS for path loss associated with the PUSCH. For example, the first RS may be an RS based on an ID value of 0 for the reference RS for path loss associated with the PUSCH. For example, the first RS may be an RS based on a transmission configuration indication (TCI) associated with the control resource set (CORESET) with the lowest index on the active downlink BWP.

[0197] For example, the second RS may be a PBCH demodulation reference signal (DM-RS) or an SSS.

[0198] For example, based on being configured to monitor DCI format 0_1 ​​or DCI format 0_2, DCI format 3_0 may include a Sounding Reference Signal Resource Indicator (SRI) field. For example, the SRI field may include RS information used to determine transmit power associated with a PUSCH transmission. For example, downlink path loss may be determined based on a third RS associated with the SRI field.

[0199] For example, the power associated with SL transmission can be determined differently based on the period of PSFCH resources. For example, the power associated with SL transmission can be determined differently based on at least one of the following: service priority, service type, quality of service (QoS) requirements, resource pool congestion level, broadcast type, HARQ feedback scheme, SL operation mode, whether HARQ feedback is enabled, the number of SL sessions, UE capabilities, PSFCH resource period, the number of SL HARQ feedback bits sent through the physical uplink control channel (PUCCH), the number of PSFCH time slots associated with PUCCH, the number of PSFCHs required to configure PUCCH information, the number of symbols associated with SL time slots in the resource pool, information related to PSSCH demodulation reference signal (DM-RS), information related to whether SL channel state information (CSI)-RS is configured, information related to whether PT-RS is configured, information related to synchronization difference between SL communication and UU communication, HARQ codebook type associated with PUCCH, the number of PUSCH symbols carrying PUCCH, mode 1 dynamic grant, configuration grant, SL parameter set or uplink parameter set.

[0200] For example, the first device 100 may transmit information about the RS used to determine the power associated with SL transmission to the base station through preconfigured signaling. Herein, for example, the information about the RS may include at least one of the following: information about an RS whose path loss value is measured to be lower than a preconfigured threshold, information about an RS whose RSRP value is measured to be higher than a preconfigured threshold, or information about an RS whose path loss is measured for determining the power associated with transmission of an uplink channel performed within a preconfigured time window.

[0201] The above embodiments can be applied to various devices described below. For example, the processor 102 of the first device 100 can determine the power associated with SL transmission based on the downlink path loss. In addition, the processor 102 of the first device 100 can control the transceiver 106 to perform SL transmission based on the power associated with SL transmission.

[0202] Based on an embodiment of the present disclosure, a first device suitable for performing wireless communication may be provided. For example, the first device may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, the one or more processors may execute instructions to: determine the power associated with SL transmission based on the downlink path loss, wherein the SL transmission includes at least one of S-SS / PSBCH block transmission, PSCCH transmission, PSSCH transmission, or PSFCH transmission; and perform SL transmission based on the power associated with the SL transmission. For example, based on being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a first RS used for power control associated with PUSCH transmission scheduled by DCI format 0_0. For example, based on not being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a second RS associated with the SSB used to obtain the MIB.

[0203] Based on an embodiment of the present disclosure, a device suitable for controlling a first user equipment (UE) may be provided. For example, the device may include: one or more processors; and one or more memories, the one or more memories being operably connected to the one or more processors and storing instructions. For example, wherein the one or more processors may execute instructions to: determine the power associated with SL transmission based on the downlink path loss, wherein the SL transmission includes at least one of S-SS / PSBCH block transmission, PSCCH transmission, PSSCH transmission, or PSFCH transmission; and perform SL transmission based on the power associated with the SL transmission. For example, based on being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a first RS used for power control associated with a PUSCH transmission scheduled by DCI format 0_0. For example, based on not being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a second RS associated with an SSB used to obtain an MIB.

[0204] Based on an embodiment 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: determine the power associated with SL transmission based on the downlink path loss, wherein the SL transmission includes at least one of S-SS / PSBCH block transmission, PSCCH transmission, PSSCH transmission, or PSFCH transmission; and perform SL transmission based on the power associated with the SL transmission. For example, based on being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a first RS used for power control associated with PUSCH transmission scheduled by DCI format 0_0. For example, based on not being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a second RS associated with an SSB used to obtain an MIB.

[0205] Figure 15 A method for a second device to perform SL transmission with a first device according to an embodiment of the present disclosure is shown. Figure 15 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0206] refer to Figure 15 In step S1510, the second device 200 may perform SL communication with the first device 100 based on power associated with the SL communication. For example, the power associated with the SL communication may be determined by the first device 100 based on downlink path loss. For example, the SL communication may include at least one of S-SS / PSBCH block transmission, PSCCH transmission, PSSCH transmission, or PSFCH transmission.

[0207] For example, based on being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a first RS used for power control associated with a PUSCH transmission scheduled by DCI format 0_0. For example, based on not being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a second RS associated with an SSB used to obtain an MIB. For example, the SSB may include a PBCH, a PSS, and an SSS. For example, based on the first device 100 being in an RRC_CONNECTED state, monitoring of DCI format 0_0 may be performed. For example, based on the first device 100 being in an RRC_IDLE state, monitoring of DCI format 0_0 may not be performed.

[0208] For example, the first RS may be an RS based on parameters configured by the base station. For example, the first RS may be an RS based on parameters of the physical uplink control channel (PUCCH) resource with the lowest index on the active uplink bandwidth part (BWP). For example, the parameters configured by the base station may include ID information of a reference RS for path loss associated with the PUSCH. For example, the first RS may be an RS based on an ID value of 0 for the reference RS for path loss associated with the PUSCH. For example, the first RS may be an RS based on a transmission configuration indication (TCI) associated with the control resource set (CORESET) with the lowest index on the active downlink BWP.

[0209] For example, the second RS may be a PBCH demodulation reference signal (DM-RS) or an SSS.

[0210] For example, based on being configured to monitor DCI format 0_1 ​​or DCI format 0_2, DCI format 3_0 may include a Sounding Reference Signal Resource Indicator (SRI) field. For example, the SRI field may include RS information used to determine transmit power associated with a PUSCH transmission. For example, downlink path loss may be determined based on a third RS associated with the SRI field.

[0211] For example, the power associated with SL transmission can be determined differently based on the period of PSFCH resources. For example, the power associated with SL transmission can be determined differently based on at least one of the following: service priority, service type, quality of service (QoS) requirements, resource pool congestion level, broadcast type, HARQ feedback scheme, SL operation mode, whether HARQ feedback is enabled, the number of SL sessions, UE capabilities, PSFCH resource period, the number of SL HARQ feedback bits sent through the physical uplink control channel (PUCCH), the number of PSFCH time slots associated with PUCCH, the number of PSFCHs required to configure PUCCH information, the number of symbols associated with SL time slots in the resource pool, information related to PSSCH demodulation reference signal (DM-RS), information related to whether SL channel state information (CSI)-RS is configured, information related to whether PT-RS is configured, information related to synchronization difference between SL communication and UU communication, HARQ codebook type associated with PUCCH, the number of PUSCH symbols carrying PUCCH, mode 1 dynamic grant, configuration grant, SL parameter set or uplink parameter set.

[0212] For example, the information about the RS used to determine the power associated with SL transmission may be sent to the base station by the first device 100 through preconfigured signaling. Herein, for example, the information about the RS may include at least one of the following: information about an RS whose path loss value is measured to be lower than a preconfigured threshold, information about an RS whose RSRP value is measured to be higher than a preconfigured threshold, or information about an RS whose path loss is measured for determining the power associated with transmission of an uplink channel performed within a preconfigured time window.

[0213] The above embodiments can be applied to various devices to be described below. For example, the processor 202 of the second device 200 can control the transceiver 206 to perform sidelink (SL) communication with the first device based on power related to SL communication.

[0214] Based on an embodiment of the present disclosure, a second device suitable for performing wireless communication may be provided. For example, the second device may include: one or more memories storing instructions; one or more transceivers; and one or more processors connected to the one or more memories and the one or more transceivers. For example, the one or more processors may execute instructions to: perform SL communication with the first device based on the power associated with the SL communication. For example, the power associated with the SL transmission may be determined based on the downlink path loss. For example, the SL transmission may include at least one of an S-SS / PSBCH block transmission, a PSCCH transmission, a PSSCH transmission, or a PSFCH transmission. For example, based on being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a first RS used for power control associated with a PUSCH transmission scheduled by DCI format 0_0. For example, based on not being configured to monitor DCI format 0_0, the downlink path loss may be determined based on a second RS associated with an SSB used to obtain an MIB.

[0215] Various embodiments of the present disclosure may be combined with each other.

[0216] Hereinafter, devices to which various embodiments of the present disclosure can be applied will be described.

[0217] 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).

[0218] Hereinafter, a more detailed description will be given 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.

[0219] Figure 16A communication system (1) according to an embodiment of the present disclosure is shown.

[0220] Reference Figure 16 , 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 (HMDs), head-up displays (HUDs) installed in vehicles, televisions, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, robots, and the like. Handheld devices may include smartphones, 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.

[0221] 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 narrowband IoT for low-power communication. In this case, for example, NB-IoT technology may be an example of low-power wide area network (LPWAN) technology and may be implemented as standards such as LTE Cat NB1 and / or LTE Cat NB2, without being 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 by various names including enhanced machine type communication (eMTC). 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, without being 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, ZigBee technology can generate a personal area network (PAN) related to small / low-power digital communication based on various standards including IEEE 802.15.4, and can be referred to by various names.

[0222] Wireless devices 100a to 100f can connect to a network 300 via a base station (BS) 200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can connect to an AI server 400 via the network 300. The network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. While wireless devices 100a to 100f can communicate with each other via the BS 200 / network 300, wireless devices 100a to 100f can also communicate directly with each other (e.g., sidelink communication) without going through the BS / network. For example, vehicles 100b-1 and 100b-2 can communicate directly (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0223] Wireless communication / connection 150a, 150b, or 150c may be established between wireless devices 100a to 100f / BS 200 or BS 200 / BS 200. Here, the wireless communication / connection may be established via 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 may transmit / receive radio signals to / from each other via the wireless communication / connections 150a and 150b. For example, the wireless communication / connections 150a and 150b may transmit / receive signals via various physical channels. To this end, various configuration information configuration processes, 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 for transmitting / receiving radio signals may be performed based on various proposals of the present disclosure.

[0224] Figure 17 A wireless device according to an embodiment of the present disclosure is shown.

[0225] Reference Figure 17 , the first wireless device (100) and the second wireless device (200) can 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 Figure 16 {wireless device (100x) and BS (200)} and / or {wireless device (100x) and wireless device (100x)}.

[0226] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may additionally include one or more transceivers 106 and / or one or more antennas 108. The processor(s) 102 may control the memory(s) 104 and / or the transceiver(s) 106, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processor(s) 102 may process information in the memory(s) 104 to generate first information / signals, and then transmit a radio signal including the first information / signals through the transceiver(s) 106. The processor(s) 102 may receive a radio signal including second information / signals through the transceiver 106, and then store information obtained by processing the second information / signals in the memory(s) 104. The memory(s) 104 may be connected to the processor(s) 102 and may store various information related to the operation of the processor(s) 102. For example, the memory(s) 104 may store software code including instructions for executing part or all of the processing controlled by the processor(s) 102 or for executing the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed in this document. Here, the processor(s) 102 and the memory(s) 104 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver(s) 106 may be connected to the processor(s) 102 and transmit and / or receive radio signals via the antenna(s) 108. Each transceiver 106 may include a transmitter and / or a receiver. The transceiver(s) 106 may be used interchangeably with the radio frequency (RF) unit(s). In the present disclosure, a wireless device may represent a communication modem / circuit / chip.

[0227] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may additionally include one or more transceivers 206 and / or one or more antennas 208. The processor(s) 202 may control the memory(s) 204 and / or the transceiver(s) 206, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processor(s) 202 may process information in the memory(s) 204 to generate third information / signals, and then transmit a radio signal including the third information / signals through the transceiver(s) 206. The processor(s) 202 may receive a radio signal including fourth information / signals through the transceiver(s) 106, and then store information obtained by processing the fourth information / signals in the memory(s) 204. The memory(s) 204 may be connected to the processor(s) 202 and may store various information related to the operation of the processor(s) 202. For example, the memory(s) 204 may store software code including instructions for executing part or all of the processing controlled by the processor(s) 202 or for executing the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed in this document. Here, the processor(s) 202 and the memory(s) 204 may be part of a communication modem / circuitry / chip designed to implement a RAT (e.g., LTE or NR). The transceiver(s) 206 may be connected to the processor(s) 202 and transmit and / or receive radio signals via the antenna(s) 208. Each transceiver 206 may include a transmitter and / or a receiver. The transceiver(s) 206 may be used interchangeably with the RF unit(s). In the present disclosure, a wireless device may represent a communication modem / circuitry / chip.

[0228] The hardware elements of wireless devices 100 and 200 will be described in more detail below. One or more protocol layers may be, but are not limited to, implemented by 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 descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. 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 descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein, 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 operational flows disclosed in this document.

[0229] The one or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. The 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 the 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. The firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be included in the one or more processors 102 and 202 or stored in one or more memories 104 and 204, thereby being driven by the 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.

[0230] One or more memories 104 and 204 can be connected to one or more processors 102 and 202 and can store various types of data, signals, messages, information, programs, codes, instructions, and / or commands. One or more memories 104 and 204 can 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 can be located internally and / or externally to one or more processors 102 and 202. One or more memories 104 and 204 can be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0231] One or more transceivers 106 and 206 may transmit user data, control information, and / or radio signals / channels described in the methods and / or operational flows 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 described in the descriptions, functions, processes, proposals, methods, and / or operational flows 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 transmit and receive radio signals. For example, one or more processors 102 and 202 may control the one or more transceivers 106 and 206 to transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may control the one or more transceivers 106 and 206 to receive user data, control information, or radio signals from one or more other devices. One or more transceivers 106 and 206 can be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 can be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document via one or more antennas 108 and 208. In this document, one or more antennas can be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 can convert received radio signals / channels, etc. from RF band signals to baseband signals so that the received user data, control information, radio signals / channels, etc. can be processed by one or more processors 102 and 202. One or more transceivers 106 and 206 can convert the user data, control information, radio signals / channels, etc. processed by one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more transceivers 106 and 206 can include (analog) oscillators and / or filters.

[0232] Figure 18 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown.

[0233] Reference Figure 18 , the signal processing circuit (1000) may include a scrambler (1010), a modulator (1020), a layer mapper (1030), a precoder (1040), a resource mapper (1050) and a signal generator (1060). Figure 18 operations / functions, not limited to Figure 17 The processor (102, 202) and / or transceiver (106, 206) of Figure 17The processor (102, 202) and / or transceiver (106, 206) are implemented Figure 18 For example, you can Figure 17 The processor (102, 202) implements blocks 1010 to 1060. Alternatively, the Figure 17 The processor (102, 202) implements blocks 1010 to 1050 and can be implemented by Figure 17 The transceiver (106, 206) is used to implement block 1060.

[0234] Can be passed Figure 18 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 via various physical channels (e.g., PUSCH and PDSCH).

[0235] 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) on the complex modulation symbols. Alternatively, the precoder 1040 may perform precoding without performing transform precoding.

[0236] The resource mapper 1050 can 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 can generate a radio signal from the mapped modulation symbols, and the generated radio signal can 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.

[0237] Can Figure 18 The signal processing process for the signal received in the wireless device is configured in the opposite manner to the signal processing process (1010-1060) of the wireless device. Figure 17 100, 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 shown) for receiving a signal may include a signal restorer, a resource demapper, a post-coding process, a demodulator, a descrambler, and a decoder.

[0238] Figure 19 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 Figure 16 ).

[0239] Reference Figure 19 , the wireless device (100, 200) may correspond to Figure 17 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 Figure 17 One or more processors (102, 202) and / or one or more memories (104, 204). For example, the transceiver(s) (114) may include Figure 17The 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 transmit 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).

[0240] The additional component (140) may be configured in various ways depending on the type of 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 ( Figure 16 100a), vehicles ( Figure 16 100b-1 and 100b-2), XR devices ( Figure 16 100c), handheld devices ( Figure 16 100d), household appliances ( Figure 16 100e), IoT devices ( Figure 16 100f), digital broadcasting terminals, hologram equipment, public safety equipment, MTC equipment, medical equipment, fintech equipment (or financial equipment), security equipment, climate / environmental equipment, AI servers / equipment ( Figure 16 400), BS( Figure 16 200), network nodes, etc. Depending on the use case / service, wireless devices can be used in mobile or fixed places.

[0241] exist Figure 19In the present invention, the various elements, components, units / parts and / or modules in the wireless device (100, 200) can all 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 through a wired interface, 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.

[0242] Hereinafter, the implementation will be described in detail with reference to the accompanying drawings. Figure 19 .

[0243] Figure 20 A handheld device according to an embodiment of the present disclosure is shown. The handheld device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch 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).

[0244] Reference Figure 20 , 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 Figure 19 Frame 110 to 130 / 140.

[0245] The communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from other wireless devices or base stations. The control unit 120 can perform various operations by controlling the components of the handheld device 100. The control unit 120 may include an application processor (AP). The memory unit 130 can store data / parameters / programs / codes / commands required to operate the handheld device 100. The memory unit 130 can store input / output data / information. The power supply unit 140a can supply power to the handheld device 100 and may include wired / wireless charging circuitry, a battery, etc. The interface unit 140b can support connection between the handheld device 100 and other external devices. The interface unit 140b may include various ports for connecting to external devices (e.g., an audio I / O port and a video I / O port). The I / O unit 140c can input or output user-input video information / signals, audio information / signals, data, and / or information. The I / O unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and / or a haptic module.

[0246] 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 transmit the converted radio signals directly 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.

[0247] Figure 21 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. The vehicle or autonomous vehicle can be implemented by a mobile robot, a car, a train, a manned / unmanned aerial vehicle (AV), a ship, etc.

[0248] Reference Figure 21 , 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 Figure 19 Box 110 / 130 / 140.

[0249] The communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from external devices such as other vehicles, base stations (e.g., gNBs and roadside units), and servers. The control unit 120 can perform various operations by controlling components of the vehicle or autonomous vehicle 100. The control unit 120 may include an electronic control unit (ECU). The drive unit 140a can 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 can supply power to the vehicle or autonomous vehicle 100 and may include a wired / wireless charging circuit, a battery, etc. The sensor unit 140c can obtain vehicle status, external environment information, user information, etc. The sensor unit 140 c 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 location module, a vehicle forward / backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, a lighting sensor, a pedal position sensor, etc. The autonomous driving unit 140 d may implement a technology for maintaining a lane in which the vehicle is traveling, a technology for automatically adjusting the speed (e.g., adaptive cruise control), a technology for autonomously driving along a determined path, a technology for driving by automatically setting a path with a destination set, etc.

[0250] For example, the communication unit 110 can receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d can generate an autonomous driving path and driving plan based on the acquired data. The control unit 120 can control the drive unit 140a so that the vehicle or autonomous driving vehicle 100 can move along the autonomous driving path according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit 110 can aperiodically / periodically acquire the latest traffic information data from the external server and acquire surrounding traffic information data from neighboring vehicles. During autonomous driving, the sensor unit 140c can acquire vehicle status and / or surrounding environment information. The autonomous driving unit 140d can update the autonomous driving path and driving plan based on the newly acquired data / information. The communication unit 110 can transmit information about the vehicle's location, autonomous driving path, and / or driving plan to the external server. The external server can use AI technology, etc. based on the information collected from the vehicle or autonomous driving vehicle to predict traffic information data and provide the predicted traffic information data to the vehicle or autonomous driving vehicle.

[0251] The claims in this specification can be combined in various ways. For example, the technical features in the method claims of this specification can be combined to be implemented or performed in an apparatus, and the technical features in the apparatus claims can 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) apparatus claims can be combined to be implemented or performed in an apparatus. In addition, the technical features in (one or more) method claims and (one or more) apparatus claims can 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: determining the power to use for sidelink SL transmissions based on the downlink path loss, and performing the SL transmission based on a power for the SL transmission, The SL transmission includes at least one of a sidelink synchronization signal / physical sidelink broadcast channel S-SS / PSBCH block transmission, a physical sidelink control channel PSCCH transmission, a physical sidelink shared channel PSSCH transmission, or a physical sidelink feedback channel PSFCH transmission; The method further comprises determining whether the first device is configured to monitor downlink control information DCI format 0_0, Wherein, when the first device is configured to monitor the DCI format 0_0, the downlink path loss used to determine the power of the SL transmission is calculated using a first reference signal RS for determining the power of the physical uplink shared channel PUSCH transmission scheduled by the DCI format 0_0, Wherein, when the first device is not configured to monitor the DCI format 0_0, the downlink path loss used to determine the power of the SL transmission is calculated using a second RS associated with a synchronization signal block SSB used to obtain a master information block MIB.

2. The method according to claim 1, wherein The first RS is an RS based on parameters configured by a base station.

3. The method according to claim 2, wherein: The first RS is an RS based on parameters for a physical uplink control channel (PUCCH) resource with a lowest index on an active uplink bandwidth part (BWP).

4. The method according to claim 2, wherein: The parameters configured by the base station include identifier ID information of a reference RS for path loss associated with a PUSCH, and The first RS is an RS having an ID value of zero based on the reference RS used for the path loss associated with the PUSCH.

5. The method according to claim 2, wherein: The first RS is an RS based on a transmission configuration indication TCI associated with a control resource set CORESET having a lowest index on an active downlink BWP.

6. The method according to claim 1, wherein The SSB includes a physical broadcast channel PBCH, a primary synchronization signal PSS and a secondary synchronization signal SSS, and The second RS is a PBCH demodulation reference signal DM-RS or SSS.

7. The method according to claim 1, wherein Based on the first device being in the RRC_CONNECTED state, monitoring of the DCI format 0_0 is performed.

8. The method according to claim 1, wherein Based on the first device being in the RRC_IDLE state, monitoring of the DCI format 0_0 is not performed.

9. The method according to claim 1, wherein The power used for the SL transmission is determined differently based on the period of the PSFCH resource.

10. The method according to claim 1, further comprising: Information about the RS used to determine the power of the SL transmission is sent to the base station through pre-configured signaling.

11. The method according to claim 10, wherein: The information about the RS includes at least one of the following: information about an RS whose path loss value is measured to be lower than a preconfigured threshold, information about an RS whose reference signal received power RSRP value is measured to be higher than a preconfigured threshold, or information about an RS whose path loss is measured for determining the power associated with the transmission of an uplink channel performed within a preconfigured time window.

12. A first device adapted to perform wireless communication, the first device comprising: one or more memories; one or more transceivers; as well as one or more processors connected to the one or more memories and the one or more transceivers, The one or more memories store instructions, and the one or more processors execute the instructions to perform operations, the operations comprising: determining the power to use for sidelink SL transmissions based on the downlink path loss, and performing the SL transmission based on a power for the SL transmission, The SL transmission includes at least one of a sidelink synchronization signal / physical sidelink broadcast channel S-SS / PSBCH block transmission, a physical sidelink control channel PSCCH transmission, a physical sidelink shared channel PSSCH transmission, or a physical sidelink feedback channel PSFCH transmission; The operation further includes determining whether the first device is configured to monitor downlink control information DCI format 0_0, Wherein, when the first device is configured to monitor the DCI format 0_0, the downlink path loss used to determine the power of the SL transmission is calculated using a first reference signal RS for determining the power of the physical uplink shared channel PUSCH transmission scheduled by the DCI format 0_0, Wherein, when the first device is not configured to monitor the DCI format 0_0, the downlink path loss used to determine the power of the SL transmission is calculated using a second RS associated with a synchronization signal block SSB used to obtain a master information block MIB.

13. A processing device adapted to control a first device, the processing device comprising: one or more processors; as well as one or more memories operatively connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to perform operations comprising: determining the power to use for sidelink SL transmissions based on the downlink path loss, and performing the SL transmission based on a power for the SL transmission, The SL transmission includes at least one of a sidelink synchronization signal / physical sidelink broadcast channel S-SS / PSBCH block transmission, a physical sidelink control channel PSCCH transmission, a physical sidelink shared channel PSSCH transmission, or a physical sidelink feedback channel PSFCH transmission; The operation further includes determining whether the first device is configured to monitor downlink control information DCI format 0_0, Wherein, when the first device is configured to monitor the DCI format 0_0, the downlink path loss used to determine the power of the SL transmission is calculated using a first reference signal RS for determining the power of the physical uplink shared channel PUSCH transmission scheduled by the DCI format 0_0, Wherein, when the first device is not configured to monitor the DCI format 0_0, the downlink path loss used to determine the power of the SL transmission is calculated using a second RS associated with a synchronization signal block SSB used to obtain a master information block MIB.

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