Method and apparatus for transmitting information on channel status in NR V2X

Abstract

A method for a first device to perform wireless communication is proposed. The method may include the following steps: receiving information about a waiting time limit related to side link channel state information from a second device; selecting a resource for sending the side link channel state information in a selection window based on the absence of a reserved resource within a time window for reporting the side link channel state information; and sending a MAC CE including the side link channel state information to the second device in the time window through the selected resource. For example, the time window can be determined based on the waiting time limit. For example, the selection window can be determined based on at least one of the time window, a time offset value, or a requirement related to the side link channel state information.

Description

Technical Field

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

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

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

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

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

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

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

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

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

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

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

[0012] For example, based on remote driving, for a person who cannot drive or a remote vehicle in a dangerous environment, a remote driver or V2X application can operate or control the remote vehicle. For example, if the route is predictable (e.g., public transportation), cloud computing-based driving can be used to operate or control the remote vehicle. In addition, for example, remote driving can consider accessing a cloud-based backend service platform.

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

[0014] Technical Purpose

[0015] Meanwhile, in NR V2X, when the sub-link channel state information / channel quality information is exchanged or reported (mutually) between UEs performing sub-link communication (e.g., unicast), the UE can adaptively adjust the parameters related to transmission. For example, the parameters related to transmission may include transmission power, number of retransmissions, number of retransmissions related to a specific transmission block, size of time / frequency resources, effective coding rate, MCS value, etc. For example, when the sub-link channel state information / channel quality information is exchanged or reported between UEs performing sub-link communication, (one or more) UEs can adaptively control the transmission-related parameters based on the changes in the sub-link channel state / sub-link channel quality. Accordingly, the UE can efficiently meet the requirements related to the target service (e.g., reliability, waiting time, minimum required communication range, etc.).

[0016] At the same time, the UE may need clear criteria for determining the time point to complete the secondary link channel state information (SL CSI) reporting and a selection window related to selecting resources for SL CSI reporting / reporting.

[0017] Meanwhile, the operation for selecting resources in Mode 2 can be triggered only when SL data is available on the logical channel (LCH), but in the current NR V2X, SL CSI information can be generated directly from the MAC entity in the form of MAC CE. Therefore, it may be necessary to define new conditions for triggering resource selection for sending SL CSI report / report.

[0018] At the same time, whether to enable / disable the hybrid automatic repeat request (HARQ) feedback request can be configured for each LCH, but in the current NR V2X, since the SL CSI information is directly generated in the MAC entity in the form of MAC CE, problems related to setting whether to enable / disable the hybrid automatic repeat request (HARQ) feedback request may arise.

[0019] Meanwhile, in NR V2X, since SL CSI information is directly generated in the form of MAC CE in the MAC entity, it may be necessary to define the priority between SL CSI and SL data for LCP operation.

[0020] Technical Solution

[0021] In an embodiment, a method for a first device to perform wireless communication is proposed. The method includes the following steps: receiving information related to a waiting time limit related to a side link channel state information from a second device; selecting a resource for sending the side link channel state information in a selection window based on the absence of a reserved resource within a time window for reporting the side link channel state information; and sending a media access control (MAC) control element (CE) including the side link channel state information to the second device within the time window through the selected resource. For example, the time window can be determined based on the waiting time limit. For example, the selection window can be determined based on at least one of the time window, a time offset value, or a requirement related to the side link channel state information.

[0022] Effects of the present disclosure

[0023] The user equipment (UE) can efficiently perform SL communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a diagram for describing NR-based V2X communication compared with V2X communication based on a RAT used before NR.

[0025] Figure 2 The structure of the NR system based on the embodiment of the present disclosure is shown.

[0026] Figure 3 The functional division between NG-RAN and 5GC based on an embodiment of the present disclosure is shown.

[0027] Figure 4 A radio protocol architecture according to an embodiment of the present disclosure is shown.

[0028] Figure 5 The structure of the NR system based on the embodiment of the present disclosure is shown.

[0029] Figure 6 The structure of the time slot of the NR frame based on the embodiment of the present disclosure is shown.

[0030] Figure 7 An example of a BWP based on an embodiment of the present disclosure is shown.

[0031] Figure 8 A radio protocol architecture for SL communication based on an embodiment of the present disclosure is shown.

[0032] Fig. 9 A UE performing V2X or SL communication according to an embodiment of the present disclosure is shown.

[0033] Fig.10A 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.

[0034] Fig.11 Three types of casts based on embodiments of the present disclosure are shown.

[0035] Fig.12 is a diagram illustrating a method in which a receiving UE measures a channel state and transmits information related to the channel state to a transmitting UE according to an embodiment of the present disclosure.

[0036] Fig.13 2 is a diagram illustrating a process of sending a CSI report to a sending UE through resources reserved within a time when a receiving UE sends a CSI report according to an embodiment of the present disclosure.

[0037] Fig.14 is a diagram illustrating a situation where there are reserved resources within a preconfigured time window according to an embodiment of the present disclosure.

[0038] Fig.15 is a diagram illustrating a process of sending a CSI report to a sending UE through resources reserved within a time required for a receiving UE to send the CSI report according to an embodiment of the present disclosure.

[0039] Fig.16 is a diagram illustrating resources reserved within a time required to send a CSI report according to an embodiment of the present disclosure.

[0040] Fig.17 is a diagram illustrating a method in which a first device sends a CSI report to a second device through a resource selected within a selection window according to an embodiment of the present disclosure.

[0041] Fig.18 is a diagram illustrating a method in which a first device sends a CSI report to a second device through resources reserved within a time window according to an embodiment of the present disclosure.

[0042] Fig.19 A communication system 1 according to an embodiment of the present disclosure is shown.

[0043] Fig. 20 A wireless device according to an embodiment of the present disclosure is shown.

[0044] Fig.21 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown.

[0045] Fig. 22 Another example of a wireless device according to an embodiment of the present disclosure is shown.

[0046] Fig.23A handheld device according to an embodiment of the present disclosure is shown.

[0047] Fig.24 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0048] 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, C".

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

[0050] In the present 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".

[0051] 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".

[0052] In addition, brackets used in the present disclosure may mean "for example". Specifically, when indicated as "control information (PDCCH)", this may mean proposing "PDCCH" 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". In addition, when indicated as "control information (i.e., PDCCH)", this may also mean proposing "PDCCH" as an example of "control information".

[0053] The technical features respectively described in a pair of drawings in the present disclosure may be implemented separately or simultaneously.

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

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

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

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

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

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

[0060] Figure 3 The functional division between NG-RAN and 5GC based on an embodiment of the present disclosure is shown. Figure 3 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

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

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

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

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

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

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

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

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

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

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

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

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

[0073] Data is sent from the network to the UE via a downlink transport channel. Examples of downlink transport channels include a broadcast channel (BCH) for sending system information and a downlink shared channel (SCH) for sending user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services may be sent on a downlink SCH or may be sent on an additional downlink multicast channel (MCH). Data is sent from the UE to the network via an uplink transport channel. Examples of uplink transport channels include a random access channel (RACH) for sending initial control messages and an uplink SCH for sending user traffic or control messages.

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

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

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

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

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

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

[0080] [Table 1]

[0081]

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

[0083] [Table 2]

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

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

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

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

[0088] [Table 3]

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

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

[0091] [Table 4]

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

[0093] Figure 6 The structure of the time slot of the NR frame based on the embodiment of the present disclosure is shown. Figure 6The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

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

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

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

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

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

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

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

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

[0102] In addition, a BWP can be defined for SL. The same SL BWP can be used in transmission and reception. For example, a transmitting UE can send a SL channel or a SL signal on a specific BWP, and a receiving UE can receive a SL channel or a SL signal on the 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. The SL BWP can be configured (in advance) for out-of-coverage NR V2X UEs and RRC_IDLE UEs. For UEs operating in RRC_CONNECTED mode, at least one SL BWP can be activated within the carrier.

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

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

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

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

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

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

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

[0110] The physical sidelink broadcast channel (PSBCH) can be a (broadcast) channel for sending 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).

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

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

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

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

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

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

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

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

[0119] For example, Fig.10 (a) shows UE operations related to LTE transmission mode 1 or LTE transmission mode 3. Alternatively, for example, Fig.10 (a) 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.

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

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

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

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

[0124] In addition, in the present disclosure, for example, a transmitting UE (TX UE) may be a UE that transmits data to a (target) receiving UE (RX UE). For example, the TX UE may be a UE that performs PSCCH transmission and / or PSSCH transmission. Additionally / alternatively, for example, the TX UE may be a UE that sends (one or more) SL CSI-RS and / or SL CSI report request indicator to a (target) RX UE. Additionally / alternatively, for example, the TX UE may be a UE that sends a (control) channel (e.g., PSCCH, PSSCH, etc.) and / or (one or more) reference signals (e.g., DM-RS, CSI-RS, etc.) on a (control) channel to be used for SL radio link monitoring (RLM) operation and / or SL radio link failure (RLF) operation of the (target) RX UE.

[0125] In addition, in the present disclosure, for example, a receiving UE (RX UE) may be a UE that sends SL HARQ feedback to a transmitting UE (TXUE) based on whether data received from the TX UE is successfully decoded and / or whether a PSCCH (related to PSSCH scheduling) sent by the TX UE is successfully detected / decoded. Additionally / alternatively, for example, the RX UE may be a UE that performs SL CSI transmission to the TX UE based on (one or more) SL CSI-RS and / or SL CSI report request indicator received from the TX UE. Additionally / alternatively, for example, the RX UE is a UE that sends to the TX UE a SL (L1) reference signal received power (RSRP) measurement value measured based on a SL (L1) RSRP report request indicator and / or (one or more) (predefined) reference signals received from the TX UE. Additionally / alternatively, for example, the RX UE may be a UE that sends data of the RX UE to the TX UE. For example, the RX UE may be a UE that performs SLRLM operation and / or SL RLF operation based on a (preconfigured) (control) channel and / or reference signal(s) received from the TX UE on the (control) channel.

[0126] In addition, in the present disclosure, for example, in the case where the RX UE sends SLHARQ 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. In this document, for example, if the RX UE successfully decodes / detects the PSCCH that schedules the PSSCH, the following options or some of the following options may be applied restrictively.

[0127] (1) Multicast Option 1: Negative Acknowledgement (NACK) information is sent to the TX UE only when the RX UE is unable to decode / receive the PSSCH received from the TX UE.

[0128] (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.

[0129] In addition, in the present disclosure, for example, the TX UE may send the following information or some of the following information to the RX UE through the SCI. Here, for example, the TX UE may send some or all of the following information to the RX UE through the first SCI and / or the second SCI.

[0130] -PSSCH (and / or PSCCH) related resource allocation information (e.g., location / number of time / frequency resources, resource reservation information (e.g., time period))

[0131] -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

[0132] - (on PSSCH) SL CSI transmission indicator (or SL (L1) RSRP (and / or SL (L1) RSRQ and / or SL (L1) RSSI) information transmission indicator)

[0133] - Modulation and Coding Scheme (MCS) information

[0134] -TX power information

[0135] - L1 destination ID information and / or L1 source ID information

[0136] -SL HARQ process ID information

[0137] -New Data Indicator (NDI) information

[0138] - Redundancy Version (RV) information

[0139] -QoS information (for example, priority information) (related to the transmission service / packet)

[0140] -SL CSI-RS transmission indicator or information on the number of antenna ports used for transmitting SL CSI-RS

[0141] -TX UE location information or target RX UE location (or distance range) information (for which SL HARQ feedback is requested)

[0142] - Reference signal (e.g., DM-RS, etc.) information related to decoding of data sent through PSSCH (and / or channel estimation). For example, information related to the pattern of (time-frequency) mapping resources of DM-RS, rank information, antenna port index information, information about antenna port numbers, etc.

[0143] In addition, in the present disclosure, for example, since the TX UE can send the SCI, the first SCI and / or the second SCI to the RX UE through the PSCCH, the PSCCH can be replaced / replaced by the SCI, the first SCI and / or the second SCI. Additionally or alternatively, the SCI can be replaced / replaced by the PSCCH, the first SCI and / or the second SCI. Additionally or alternatively, for example, since the TX UE can send the second SCI to the RX UE through the PSSCH, the PSSCH can be replaced / replaced by the second SCI.

[0144] In addition, 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. In addition, for example, the first SCI may be sent to the receiving UE via the PSCCH. In addition, for example, the second SCI may be sent to the receiving UE via the (independent) PSCCH, or may be piggybacked and sent together with the data via the PSSCH.

[0145] Furthermore, in the present disclosure, for example, the term “configuration” or the term “definition” may mean (pre) configuration (for each resource pool) from a base station or a network (through predefined signaling (e.g., SIB, MAC, RRC, etc.)).

[0146] Furthermore, in the present disclosure, for example, since the RLF may be determined based on the out-of-sync (OOS) indicator or the in-sync (IS) indicator, the RLF may be replaced / substituted by the out-of-sync (OOS) indicator or the in-sync (IS) indicator.

[0147] In addition, in the present disclosure, for example, an RB may be replaced / replaced by a subcarrier. In addition, for example, a packet or a service may be replaced / replaced by a TB or a MAC PDU based on a transmission layer.

[0148] Furthermore, in the present disclosure, CBG may be replaced / substituted by TB.

[0149] Furthermore, in the present disclosure, for example, a source ID may be replaced / replaced by a destination ID.

[0150] In addition, 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.

[0151] In addition, in the present disclosure, for example, the operation of the sending UE reserving / selecting / determining (one or more) retransmission resources may include: determining the operation of the sending UE reserving / selecting / determining (one or more) potential retransmission resources actually used based on the SL HARQ feedback information received from the receiving UE.

[0152] Furthermore, in the present disclosure, a sub-selection window may be replaced / replaced by a selection window and / or a preconfigured number of resource sets within the selection window, or vice versa.

[0153] In addition, in the present disclosure, SL MODE 1 may refer to a resource allocation method or a communication method in which a base station directly schedules (one or more) 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 (one or more) SL transmission resources in 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.

[0154] In addition, in the present disclosure, for example, a dynamic grant (DG) may be replaced / replaced by a configuration grant (CG) and / or a semi-persistent scheduling (SPS) grant, or vice versa. For example, the DG may be replaced / replaced by a combination of a CG and an SPS grant, or vice versa. For example, the 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, the grant may be provided by RRC signaling and may be stored as a configuration grant. For example, in CG type 2, the 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.

[0155] In addition, in the present disclosure, a channel may be replaced / replaced by 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.

[0156] In addition, for example, the play can be replaced / replaced by at least one of unicast, multicast and / or broadcast, or vice versa. For example, the play type can be replaced / replaced by at least one of unicast, multicast and / or broadcast, or vice versa.

[0157] Furthermore, in the present disclosure, a resource may be replaced / substituted by a time slot or a symbol, or vice versa. For example, a resource may include a time slot and / or a symbol.

[0158] In addition, in the present disclosure, priority may be replaced / substituted by at least one of Logical Channel Priority (LCP), latency, reliability, minimum required communication range, ProSe (Proximity Services) Per Packet Priority (PPPP), Side Link Radio Bearer (SLRB), QoS profile, QoS parameters and / or requirements, or vice versa.

[0159] Furthermore, in various embodiments of the present disclosure, reserved resources and / or selected resources may be replaced / substituted by a secondary link grant (SL grant).

[0160] Furthermore, in various embodiments of the present disclosure, latency may be replaced / substituted by a packet delay budget (PDB).

[0161] In addition, in various embodiments of the present invention, the message for triggering reporting on sublink channel state information / sublink channel quality information (hereinafter, SL_CSI information) may be replaced / substituted by receiving a sublink channel state information reference signal (CSI-RS).

[0162] In addition, in the present disclosure, blind retransmission may mean that the TX UE performs retransmission without receiving SL HARQ feedback information from the RX UE. For example, retransmission based on SL HARQ feedback may mean that the TX UE determines 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.

[0163] Furthermore, in the present disclosure, for example, for convenience of description, a (physical) channel used when the RX UE transmits at least one of the following information to the TX UE may be referred to as a PSFCH.

[0164] -SL HARQ feedback, SL CSI, SL (L1) RSRP

[0165] In addition, in the present disclosure, the Uu channel may include a UL channel and / or a DL channel. For example, the UL channel may include a PUSCH, a PUCCH, a sounding reference signal (SRS), etc. For example, the DL channel may include a PDCCH, a PDSCH, a PSS / SSS, etc. For example, the SL channel may include a PSCCH, a PSSCH, a PSFCH, a PSBCH, a PSSS / SSSS, etc.

[0166] In addition, in the present disclosure, the side link information may include at least one of a side link message, a side link packet, a side link service, a side link data, a side link control information and / or a side link transmission block (TB). For example, the side link information may be sent via PSSCH and / or PSCCH.

[0167] At the same time, for example, when (mutually) exchanging or reporting sub-link channel state information / channel quality information (e.g., RSRP / RSRQ, CQI / RI / PMI) between UEs performing sub-link communication (e.g., unicast), (one or more) UEs can adaptively adjust the parameters related to transmission. For example, the parameters related to transmission may include transmission power, number of retransmissions, number of retransmissions related to a specific transmission block, size of (one or more) time / frequency resources, effective coding rate, MCS value, etc. For example, when exchanging or reporting sub-link channel state information / channel quality information between UEs performing sub-link communication, (one or more) UEs can adaptively control the transmission-related parameters based on changes in the sub-link channel state / sub-link channel quality. Accordingly, the UE can efficiently meet the requirements related to the target service (e.g., reliability, waiting time, minimum required communication range, etc.).

[0168] In addition, for example, the UE may send sublink channel state information / sublink channel quality information (hereinafter, SL_CSI information), and the UE may select or reserve resources related to the sending of sublink channel state information / sublink channel quality information. Here, for example, according to various embodiments of the present disclosure, the UE may configure whether to apply the following rules or parameters related to enabling / disabling the following rules differently or independently based on the resource pool and / or service type / type and / or service priority and / or play type (e.g., unicast, multicast, broadcast) and / or destination UE and / or L1 destination / source ID or L2 destination / source ID and / or multicast options and / or (one or more) QoS parameters and / or (resource pool) congestion level and / or mode type and / or whether to send only SL_CSI information and / or parameter set (e.g., subcarrier spacing, CP length). For example, the groupcast options may include a method of sending NACK information only when PSSCH decoding / reception fails, a method of sending ACK information when PSSCH decoding / reception succeeds, and a method of sending NACK information when PSSCH decoding / reception fails. For example, whether only SL_CSI information is sent may include a case where SL_CSI information and data information / service packet are sent simultaneously and a case where only SL_CSI information is sent. In this case, the length of the preconfigured time window (SL_RPWIN) may be configured differently based on whether only SL_CSI information is sent. For example, when SL_CSI information and data information / service packet are sent simultaneously, the preconfigured time window SL_RPWIN may be configured longer or shorter.

[0169] For example, parameters related to whether (a part of) the following rules are applied or whether the following rules are enabled / disabled are maximum or minimum preconfigured time window (hereinafter, SL_RPWIN) length / CSI_QINF / RP_TWIN / CSI_LR, thresholds, maximum or minimum selection / sensing window lengths, etc. Here, for example, CSI_QINF can be information related to logical channel priority (LCP) and / or side link radio bearer (SLRB) and / or (one or more) QoS profiles / parameters and / or (one or more) QoS requirements (e.g., priority, delay, reliability, minimum required communication range) and / or the maximum allowed number of retransmissions and / or whether to enable / disable side link HARQ and / or SL HARQ feedback type. For example, RP_TWIN can be the time when the receiving UE needs to perform or send a report related to the SL_CSI information. For example, CSI_LR can be a preconfigured delay requirement.

[0170] In addition, for example, when SL_CSI information is sent by high-layer signaling (e.g., MAC CE / PPDU, RRC) or physical layer signaling (e.g., sent using certain resource(s) on PSSCH), the following proposed scheme / rule (a portion thereof) may be applied. In addition, for example, when the following conditions are met, the transmitting UE may be configured / allowed to perform a sublink CSI-RS transmission to the receiving UE. Here, for example, when the above rules are applied, the sublink CSI-RS transmission and / or sublink CSI-RS reception may implicitly trigger a report related to the SL_CSI information.

[0171] For example, when a transmitting UE has a PSSCH and / or packets / data to be transmitted to a receiving UE, the transmitting UE may be configured / allowed to perform a sidelink CSI-RS transmission to the receiving UE.

[0172] And / or, for example, when reporting of SL_CSI information is enabled, the sending UE may be configured / allowed to perform sidelink CSI-RS transmission to the receiving UE. And / or, here, for example, reporting related to SL-CSI information may be enabled or disabled based on resource pool and / or service type / type and / or service priority and / or play type (e.g., unicast, multicast, broadcast) and / or destination UE and / or L1 destination / source ID or L2 destination / source ID and / or multicast option and / or (one or more) QoS parameters and / or (resource pool) congestion level and / or mode type and / or whether only SL_CSI information is sent and / or parameter set (e.g., subcarrier spacing, CP length) and / or more specifically predefined signaling (e.g., PC5 RRC signaling between the sending UE and the receiving UE, SIB / RRC signaling sent from the base station, reconfiguration by the network, etc.). For example, the groupcast options may include a method of sending NACK information only when PSSCH decoding / reception fails, a method of sending ACK information when PSSCH decoding / reception succeeds, and a method of sending NACK information when PSSCH decoding / reception fails. For example, whether to send only SL_CSI information may include a case where SL_CSI information and data information / service packets are sent at the same time and a case where only SL_CSI information is sent. In this case, the SL_RPWIN length may be configured differently based on whether only SL_CSI information is sent. For example, when SL_CSI information and data information / service packets are sent at the same time, SL_RPWIN may be configured to be longer or shorter.

[0173] And / or, for example, when a transmitting UE triggers a report related to SL_CSI information for a receiving UE via a pre-configured field on a PSCCH or PSSCH (e.g., SCI), the transmitting UE may be configured / allowed to perform a sidelink CSI-RS transmission to the receiving UE.

[0174] On the other hand, for example, the side-link communication environment may have relatively severe interference variations. For example, in the side-link communication environment, the interference variations may be relatively severe due to the mobility / sensing-based resource selection / reservation of the UE compared to the communication environment between the base station and the UE. For example, the receiving UE may send or perform a report related to the side-link channel state information / side-link channel quality information within a preconfigured time window. For example, the receiving UE may send or perform a report related to the side-link channel state information / side-link channel quality information triggered by the sending UE within a preconfigured time window so as to alleviate the aging problem of the measured side-link channel state information / side-link channel quality information.

[0175] Fig.12is a diagram illustrating a method in which a receiving UE measures a channel state and transmits information related to the channel state to a transmitting UE according to an embodiment of the present disclosure. Fig.12 Can be combined with various implementations.

[0176] Reference Fig.12 , in step S1210, the receiving UE may measure the channel state between the transmitting UE and the receiving UE. In step S1220, the receiving UE may send information related to the measured channel state to the transmitting UE. For example, the receiving UE may send information related to the measured channel state to the transmitting UE through resources in RP_TWIN that meet specific conditions. For example, if there are no resources in RP_TWIN that meet specific conditions, the receiving UE may reselect or reserve another resource for reporting channel state information. Here, for example, RP_TWIN may be the time when the receiving UE needs to perform or send a report related to SL_CSI information. A method in which a receiving UE measures a channel state and sends information related to the channel state to a transmitting UE according to various embodiments of the present disclosure will be described.

[0177] For example, the sub-link communication environment may have relatively severe interference changes. For example, in the sub-link communication environment, compared with the communication environment between the base station and the UE, the interference changes may be relatively severe due to the UE's mobility / sensing-based resource selection / reservation. For example, the receiving UE may send or perform a report related to the sub-link channel state information / sub-link channel quality information (hereinafter referred to as SL_CSI information) within a preconfigured time window. For example, the receiving UE may send or perform a report related to the sub-link channel state information / sub-link channel quality information triggered by the sending UE within a preconfigured time window (hereinafter referred to as SL_RPWIN) to alleviate the aging problem of the measured sub-link channel state information / sub-link channel quality information. Here, for example, the time point at which the receiving UE receives a message from the sending UE for triggering a report related to the sub-link channel state information / sub-link channel quality information may be "time slot #N". The receiving UE may send or perform a report related to the sub-link channel state information / sub-link channel quality information in "time slot #(N+SL_RPWIN)". In addition, for example, when the UE is signaled from a higher layer (e.g., MAC CE / PDU, RRC) the side link channel state information / side link channel quality information, the UE may re-specify or configure information related to the logical channel priority (LCP) and / or the side link radio bearer (SLRB) and / or (one or more) QoS profiles / parameters and / or (one or more) QoS requirements (e.g., priority, delay, reliability, minimum required communication range) and / or the maximum allowed number of retransmissions and / or whether to enable / disable the side link HARQ and / or SL HARQ feedback type (hereinafter referred to as CSI_QINF). For example, the SL HARQ feedback type may include a method of sending NACK information only when PSSCH decoding / reception fails, sending ACK information when PSSCH decoding / reception succeeds, and sending NACK information when PSSCH decoding / reception fails. Here, for example, CSI_QINF may be configured as (one or more) service related information / parameters. For example, CSI_QINF may be configured as (one or more) information / parameters related to the highest priority service or preconfigured service allowed on the resource pool being executed between the transmitting UE and the receiving UE. For example, CSI_QINF may be configured as (one or more) information / parameters related to the highest priority service or preconfigured service allowed between the transmitting UE and the receiving UE and the carrier and / or sub-link BWP being executed therebetween. Here, for example, the UE may select or reserve resources related to the SL_CSI information report based on the following rules, and the UE may send the SL_CSI information report based on the following rules.Here, for example, the CSI_QINF value (e.g., LCP, priority, waiting time) associated with the SL_CSI information can be configured to be a relatively larger or smaller value and / or a strict or loose value than the value of the (related) (service) data. For example, the UE can configure / exchange the CSI_QINF value (e.g., LCP, priority, and waiting time) associated with the SL_CSI information through PC5 RRC signaling. Here, for example, the UE can configure the priority and / or LCP value associated with the SL_CSI information to be greater than, equal to, or greater than the priority and / or LCP value associated with the service / message executed by the UE. For example, the UE can configure the priority and / or LCP value associated with the SL_CSI information to be greater than, equal to, or greater than the highest priority and / or LCP value associated with the service / message executed by the UE. For example, the UE can configure the priority and / or LCP value associated with the SL_CSI information to be the same value as the highest priority and / or LCP value associated with the service / message executed by the UE. Here, for example, the UE can configure the waiting time value associated with the SL_CSI information to be less than, equal to, or less than the waiting time value associated with the service / message executed by the UE. For example, the UE may configure the delay value associated with the SL_CSI information to be less than, equal to, or less than a minimum delay value associated with a service / message performed by the UE. For example, the UE may configure or specify the delay value associated with the SL_CSI information to be a minimum delay value associated with a service / message performed by the UE. For example, the above method of configuring the value associated with the SL_CSI information may be applied even when the base station / network configures the value associated with the SL_CSI information. For example, the above method of configuring the value associated with the SL_CSI information may be applied even when the base station / network specifically configures the value associated with the SL_CSI information for a resource pool and / or service type / priority. Here, for example, the rule may be applied when configuring SL_RPWIN and / or CSI_QINF associated with a report on the SL_CSI information.

[0178] For example, if there are existing selected / reserved resources (hereinafter referred to as ORI_RSC) that meet the following conditions within the time (hereinafter referred to as RP_TWIN) when the receiving UE needs to perform or send a report related to the SL_CSI information, the receiving UE can send the SL_CSI information to the transmitting UE by selecting / reserving the resources. Here, for example, RP_TWIN can be "time slot # (N+SL_RPWIN)" determined based on the preconfigured SL_RPWIN value and / or "time slot # (N+CSI_LR)" or "time slot # (N+CSI_LR-DE_OFFSET)" determined based on the preconfigured CSI_QINF information (e.g., delay requirement (hereinafter, CSI_LR)). Here, for example, the DE_OFFSET value can be the time when the transmitting UE decodes the SL_CSI information reported by the receiving UE. For example, RP_TWIN can be one of "time slot # (N+SL_RPWIN)", "time slot # (N+CSI_LR)" or "time slot # (N+CSI_LR-DE_OFFSET)".

[0179] On the other hand, for example, if there is no existing selected / reserved resource (ORI_RSC) that satisfies the following conditions within the time (RP_TWIN) during which the receiving UE needs to perform or send a report related to the SL_CSI information, the receiving UE can trigger an operation of selecting / reserving (transmitting) resources for reports related to the SL_CSI information. Here, for example, when the receiving UE selects / reserves (one or more) (transmitting) resources related to the report on the SL_CSI information, if there are already selected / reserved resources, the receiving UE can determine (one or more) (transmitting) resources in the remaining time slots other than the time slot including the selected / reserved resources as sensing-based selectable / reservable candidates. For example, the already selected / reserved resources may be resources that do not satisfy (a part of) the following conditions. And / or, the receiving UE can be configured to select / reserve a selection window (e.g., a time domain / window in which there may be sensing-based selectable / reservable transmission resource candidates) for resources related to the transmission of the SL_CSI information based on information related to the SL_RPWIN and / or CSI_QINF (e.g., CSI_LR). Here, for example, when the receiving UE configures the selection window, the receiving UE may configure the selection window from "time slot # (N + PRC_OFFSET)" to "time slot # (N + SL_RPWIN)" or "time slot # (N + CSI_LR)" or "time slot # (N + CSI_LR-DE_OFFSET)". Here, for example, the PRC_OFFSET value may be a (time) offset value based on the time required to decode a message received in "time slot #N" for triggering a report related to SL_CSI information and / or the time required to perform processing related to SL_CSI measurement and information, etc.

[0180] For example, if ORI_RSC exists in RP_TWIN, regardless of whether (a part of) the following conditions are met, the receiving UE can send SL_CSI information to the sending UE through ORI_RSC, and / or perform multiplexed transmission between SL_CSI information and (service) data and / or send multiple MAC PDUs related to SL_CSI information and (service) data. And / or, when ORI_RSC exists in RP_TWIN, the receiving UE can omit / skip the (service) data transmission on ORI_RSC and send or perform reports related to SL_CSI information. And / or, when ORI_RSC exists in RP_TWIN, the operation of the receiving UE can independently trigger the operation of selecting / reserving (transmission) resources related to reports related to SL_CSI information. For example, the receiving UE can select / reserve resources different from ORI_RSC and send or perform reports related to SL_CSI information.

[0181] -Condition 1

[0182] For example, the case where the priority associated with ORI_RSC (e.g., LCP) is equal to or higher than the priority associated with (pre-configured) SL_CSI information. For example, the highest / maximum service / data priority (e.g., LCP) associated with ORI_RSC and / or the priority determined for selecting / reserving sensing and resources associated with ORI_RSC is relatively equal to or higher than the priority associated with (pre-configured) SL_CSI information or a pre-configured threshold.

[0183] And / or, for example, the highest / maximum service / data priority (e.g., LCP) associated with ORI_RSC and / or the priority determined for selecting / reserving sensing and resources associated with ORI_RSC is relatively equal to or less than the priority or preconfigured threshold associated with (preconfigured) SL_CSI information.

[0184] And / or, for example, the case where the waiting time value associated with the ORI_RSC is shorter than the waiting time value associated with the SL_CSI information. For example, the case where the waiting time value of the shortest service / data associated with the ORI_RSC is shorter than the delay value associated with the preconfigured SL_CSI information or the preconfigured threshold.

[0185] And / or, for example, when sensing and resource selection / reservation related to ORI_RSC is performed, the delay value assumed or configured is shorter than the delay value related to SL_CSI information. For example, when sensing and resource selection / reservation related to ORI_RSC is performed, the delay value assumed or configured is shorter than the delay value related to preconfigured SL_CSI information or a preconfigured threshold.

[0186] And / or, for example, the case where the waiting time value associated with the ORI_RSC is longer than the waiting time value associated with the SL_CSI information. For example, the case where the waiting time value of the shortest service / data associated with the ORI_RSC is longer than the delay value associated with the preconfigured SL_CSI information or the preconfigured threshold.

[0187] And / or, for example, when sensing and resource selection / reservation related to ORI_RSC is performed, the delay value assumed or configured is longer than the delay value associated with SL_CSI information. For example, when sensing and resource selection / reservation related to ORI_RSC is performed, the delay value assumed or configured is longer than the delay value associated with preconfigured SL_CSI information or a preconfigured threshold.

[0188] And / or, for example, the case where the waiting time value associated with the ORI_RSC is the same as the waiting time value associated with the SL_CSI information. For example, the case where the waiting time value of the shortest service / data associated with the ORI_RSC is the same as the delay value or preconfigured threshold associated with the preconfigured SL_CSI information.

[0189] And / or, for example, when the delay value assumed or configured when performing sensing and resource selection / reservation related to ORI_RSC is the same as the delay value associated with SL_CSI information. For example, when the delay value assumed or configured when performing sensing and resource selection / reservation related to ORI_RSC is the same as the delay value associated with preconfigured SL_CSI information or the preconfigured threshold.

[0190] And / or, here, for example, when condition 1 is satisfied, the receiving UE may omit / skip the transmission of (service) data of relatively low priority and / or long latency on ORI_RSC, and may report information related to SL_CSI information. And / or, for example, the receiving UE may only transmit (service) data corresponding to relatively high priority and / or short latency value or strict QoS requirement on ORI_RSC. For example, the receiving UE may omit / skip the transmission of (service) data corresponding to relatively low priority and / or long latency value or relaxed QoS requirement on ORI_RSC.

[0191] -Condition 2

[0192] For example, the size of the time / frequency resources and / or the number of retransmission resources related to ORI_RSC and / or the maximum number of retransmissions / the maximum allowed number of retransmissions / the determined maximum number of retransmissions and / or whether sub-link HARQ feedback operation is supported (for example, whether resources are selected / reserved based on the sub-link HARQ feedback operation) and / or the sub-link HARQ feedback type and / or the transmit power value and / or the supportable effective coding rate value meet the requirements of the (pre-configured) SL_CSI information or the pre-configured threshold.

[0193] Here, for example, the ORI_RSC satisfying the above condition 2 may be a resource satisfying the (preconfigured) CSI_QINF information / requirements (e.g., priority, delay, reliability, minimum required communication range). And / or, condition 2 may be a condition for checking whether the resource satisfies the (preconfigured) CSI_QINF information / requirements.

[0194] -Condition 3

[0195] For example, the case where the transmission of SL_CSI information on ORI_RSC and / or the multiplexing transmission between SL_CSI information and (service) data does not exceed the preconfigured threshold of the effective coding rate. And / or, for example, the case where the transmission of SL_CSI information based on a preconfigured MCS value (e.g., QPSK) on ORI_RSC is supported. And / or, for example, the case where the transmission of SL_CSI information based on the transport block / MAC PDU size is supported on ORI_RSC.

[0196] And / or, here, for example, on ORI_RSC, when the priority (e.g., LCP) and / or the waiting time value associated with the (service) data is equal to or higher than the priority and / or the delay value of the SL_CSI information, multiplexed transmission between the SL_CSI information and the (service) data or transmission of multiple MAC PDUs associated with the SL_CSI information and the (service) data may be allowed. And / or, for example, on ORI_RSC, when the priority (e.g., LCP) and / or the waiting time value associated with the (service) data is equal to or lower than the priority and / or the delay value of the SL_CSI information, multiplexed transmission between the SL_CSI information and the (service) data or transmission of multiple MAC PDUs associated with the SL_CSI information and the (service) data may be allowed. And / or, when the (service) data-related QoS requirement is equal to the QoS requirement of the SL_CSI information and / or is stricter or looser than the QoS requirement of the SL_CSI information, it may be allowed. For example, when the (service) data-related waiting time requirement is relatively short compared to the waiting time requirement of the SL_CSI information, it may be allowed. For example, it may be allowed when the reliability requirement related to the (service) data is relatively high compared to the reliability requirement of the SL_CSI information.

[0197] For example, when the receiving UE performs multiplexing transmission between SL_CSI information and (service) data or transmission of multiple MAC PDUs related to SL_CSI information and (service) data, the receiving UE may specify / regard the application of the priority field and / or QoS parameter field and / or the multiplexed MAC PDU on the relevant PSCCH (e.g., SCI) as / regard a relatively high priority value and / or a strict QoS parameter value (e.g., short delay, high reliability, long minimum required communication range) among the SL_CSI information and (service) data. And / or, the receiving UE may specify / regard the priority field and / or QoS parameter field as / regard a preconfigured (specific) value on the relevant PSCCH (e.g., SCI).

[0198] Here, for example, on ORI_RSC, when the multiplexed transmission between SL_CSI information and (service) data or the transmission of multiple MAC PDUs related to SL_CSI information exceeds the preconfigured threshold of the effective coding rate, the receiving UE can perform a transmission operation corresponding to a relatively high priority and / or a short waiting time value or a strict QoS requirement. For example, the receiving UE can omit / skip a transmission operation corresponding to a relatively low priority and / or a long waiting time value or a loose QoS requirement. In addition, for example, when the priority or QoS requirements are the same, the receiving UE can perform a randomly selected transmission operation, send a randomly selected SL_CSI or send a randomly selected (service) data. And / or, the receiving UE can send SL_CSI or (service) data or perform transmission for a preconfigured type / type. And / or, SL_CSI or (service) data can be sent, or transmission can always be performed for a preconfigured classification / type.

[0199] -Condition 4

[0200] For example, a case where (service) data transmission is not actually performed on the ORI_RSC. Here, for example, when the priority (e.g., LCP) associated with the (service) data transmission on the ORI_RSC is equal to or higher than the priority of the SL_CSI information, condition 4 may be applied. For example, when the priority (e.g., LCP) associated with the (service) data transmission on the ORI_RSC is equal to or lower than the priority of the SL_CSI information, condition 4 may be applied. When the highest priority (e.g., LCP) and / or the shortest delay value associated with the (service) data transmission on the ORI_RSC is equal to, higher than or lower than the priority and / or delay value of the SL_CSI information, condition 4 may be applied. And / or, for example, when the QoS requirement associated with the (service) data transmission on the ORI_RSC is equal to or stricter than the QoS requirement of the SL_CSI information, condition 4 may be applied. For example, when the QoS requirement associated with the (service) data transmission on the ORI_RSC is equal to or looser than the QoS requirement of the SL_CSI information, condition 4 may be applied.

[0201] For example, the RRC may configure (one or more) parameters to control the SL-CSI reporting / reporting process. For example, the (one or more) parameters may include an sl-LatencyBound-CSI-Report maintained for each PC5-RRC connection. Here, for example, the sl-LatencyBound-CSI-Report may indicate the delay time boundary of the SLCSI report triggered by the relevant SL CSI based on the number of time slots. For example, the value of the sl-CSI-ReportTimer may be the same as the delay requirement of the SL-CSI report in the sl-LatencyBound-CSI-Report set in the RRC. For example, if the SL-CSI report is triggered by the SCI and is not canceled, if the sl-CSI-ReportTimer for the triggered SL-CSI report is not executed, the MAC entity may start the sl-CSI-ReportTimer. For example, if the SL-CSI report is triggered by the SCI and is not canceled, if the sl-CSI-ReportTimer of the triggered SL-CSI report expires, the MAC entity may cancel the triggered SL-CSI report.

[0202] For example, the MAC entity may choose to generate a selected sublink grant corresponding to the transmission of a single MAC PDU, and may trigger an SL-SCI report. In this case, the MAC entity may select a resource pool from among the resource pools. For example, the MAC entity may perform a check to select transmission resources for the selected resource pool. For example, if the result of the check is to trigger the selection of transmission resources, the MAC entity may select the number of HARQ retransmissions from the allowed number configured by RRC in the sl-MaxTxTransNumPSSCH included in the sl-PSSCH-TxConfigList. When configured by RRC, it may overlap with the sl-MaxTxTransNumPSSCH indicated in the sl-CBR-PSSCH-TxConfigList for the highest priority of the logical channel allowed on the carrier and the CBR measured in the lower layer. For example, as a result of the check, when the selection of transmission resources is triggered, the MAC entity may select the amount of frequency resources within the range configured by RRC between sl-MinSubChannelNumPSSCH and sl-MaxSubChannelNumPSSCH contained in sl-PSSCH-TxConfigList. For example, as a result of the check, when the selection of transmission resources is triggered, the MAC entity may randomly select the time and frequency resources for a transmission opportunity from the (one or more) resources indicated by the physical layer according to the (one or more) frequency resources selected from the (one or more) logical channels allowed in the carrier and the amount of remaining PDBs of available SL data.

[0203] For example, if the MAC entity has SL resources allocated for new transmission, and the SL-SCH resources can carry / accept MAC CE and its (one or more) sub-headers reporting SL CSI as a result of logical channel priority, the MAC entity can instruct the multiplexing and assembly process to generate a MAC CE for reporting the secondary link CSI. And, the MAC entity can stop the sl-CSI-ReportTimer for the triggered SL-CSI report / report. For example, the MAC entity can cancel the triggered SL-CSI report.

[0204] For example, the logical channels may be prioritized in the order of SCCH data, MAC CE for sidelink CSI reporting, and all STCH data. That is, the priority associated with SCCH data may be the highest.

[0205] According to an embodiment of the present disclosure, a receiving UE may receive waiting time budget information (hereinafter, CSI_LBT) related to SL CSI reporting / reporting from a transmitting UE through PC5 RRC signaling. Then, for example, if the receiving UE receives a message requesting an SL CSI report at a "time slot #N" time point, the receiving UE may consider / determine that the SL CSI report should be completed until a time point "time slot #(N+CSI_LBT)" that is CSI_LBT away from the "time slot #N" time point. In this case, for example, a selection window (SELECTION WINDOW) area for selecting a transmission resource for SL CSI reporting may be determined from a "time slot #(N+OFF_VAL)" time point to a "time slot #(N+CSI_LBT)" time point. Here, OFF_VAL may include at least one of a time for decoding a message requesting an SLCSI report or a processing time required for SL CSI measurement / information generation. Therefore, taking into account the SL CSI report completion time and the SL CSI report completion time, the selection window related to selecting resources for SLCSI reporting may be clearly determined.

[0206] According to an embodiment of the present disclosure, if there are existing resources (ORI_RSC) selected / reserved by the receiving UE and the ORI_RSC can carry / accept the SLCSI report until the "time slot # (N+CSI_LBT)" in which the SL CSI report should be completed in the time domain, the receiving UE can send the SL CSI report through the ORI_RSC. On the other hand, for example, if there is no ORI_RSC or the ORI_RSC cannot carry / accept the SL CSI report until the "time slot # (N+CSI_LBT)" in which the SL CSI report should be completed in the time domain, the receiving UE can trigger a new resource selection for sending the SL CSI report. That is, since the SL CSI information is directly generated by the MAC entity in the form of a MAC CE, by defining new conditions for triggering the selection of resources related to sending the SL CSI report, the receiving UE can efficiently send the SL CSI report.

[0207] According to an embodiment of the present disclosure, in the case where the MAC PDU sends an SL-CSI report including only the MAC CE format, the HARQ feedback request can be always disabled. That is, considering that the SL-CSI information is directly generated by the MAC entity in the form of MAC CE, the receiving UE can efficiently send whether the HARQ feedback request is enabled / disabled through the SL-CSI report.

[0208] According to an embodiment of the present disclosure, during SL-LCP operation, the priority associated with the SL-CSI report in the MAC CE format can be defined as a higher priority than general SL data. That is, since the SL CSI information is directly generated by the MAC entity in the form of MAC CE, by defining the priority between the SL CSI and SL data for LCP operation, the receiving UE can efficiently send the SL CSI report.

[0209] Fig.13 2 is a diagram illustrating a process of sending a CSI report to a sending UE through resources reserved within a time when a receiving UE sends a CSI report according to an embodiment of the present disclosure. Fig.14 is a diagram illustrating a situation where there are reserved resources within a preconfigured time window according to an embodiment of the present disclosure. Fig.13 and Fig.14 It can be combined with various embodiments of the present disclosure.

[0210] Reference Fig.13 In step S1310, the transmitting UE may trigger CSI reporting / reporting to the receiving UE. For example, the transmitting UE may send a message for triggering CSI reporting to the receiving UE. For example, the transmitting UE may trigger CSI reporting to the receiving UE via a pre-configured field on the PSCCH or PSSCH (e.g., SCI).

[0211] In step S1320, the transmitting UE may send information related to the CSI report / report to the receiving UE. For example, the transmitting UE may send information related to the CSI report to the receiving UE via PC5 RRC signaling. For example, the information related to the CSI report may include information related to at least one of a logical channel priority (LCP), a side link radio bearer (SLRB), a QoS profile / parameter, QoS requirements (e.g., priority, delay, reliability, minimum required communication range), a waiting time limit, a maximum allowed number of retransmissions, whether to enable / disable side link HARQ feedback, or a multicast option.

[0212] In step S1330, the receiving UE may perform data transmission or CSI reporting / reporting to the transmitting UE by reserving resources. For example, if resources are reserved within the time required to send the CSI report, the receiving UE may perform CSI reporting to the transmitting UE by reserving resources within the time required to send the CSI report.

[0213] Reference Fig.14The time required to send the CSI report / report may be the time from the time when the receiving UE receives the message for triggering the CSI report from the sending UE to the preconfigured time. For example, the time required to send the CSI report may be the time from the time when the receiving UE receives the message for triggering the CSI report from the sending UE to the time set based on the waiting time limit.

[0214] For example, the time required to send the CSI report / report may be a time based on a waiting time limit. For example, the time required to send the CSI report may be determined based on a preconfigured time window. For example, the time required to send the CSI report may be determined based on preconfigured CSI report related information (e.g., delay requirements). For example, the time required to send the CSI report may be determined based on information related to the preconfigured CSI report and the time for the sending UE to decode the CSI reported by the receiving UE.

[0215] For example, the time required to send the CSI report may be set differently depending on whether only CSI is sent. For example, whether only CSI is sent may include a case where CSI and (one or more) data information / service packets are sent simultaneously and a case where only CSI information is sent. For example, when CSI and (one or more) data information / service packets are sent simultaneously, the time required to send the CSI report may be set longer than when only CSI information is sent.

[0216] For example, the resources reserved for sending CSI reports / reports may be as follows. For example, the reserved resources that exist within the time required to send the CSI report may be resources in which the priority associated with the reserved resources is equal to or lower than the priority associated with the CSI. For example, the reserved resources may be resources in which the delay value associated with the reserved resources is equal to the delay value associated with the CSI or longer than the delay value associated with the CSI. For example, the reserved resources may be resources that meet CSI-related requirements related to the size of the time resources, the size of the frequency resources, the number of retransmission resources, the maximum number of retransmissions, the maximum number of allowed retransmissions, whether the sublink HARQ feedback operation is supported, the sublink HARQ feedback type, the transmit power value, or at least one of the effective coding rates that can be supported. For example, the reserved resources may be resources that meet information related to the CSI report (e.g., priority, delay, reliability, minimum required communication range). For example, the reserved resources may be resources that do not perform the transmission of data associated with the reserved resources.

[0217] For example, when the multiplexing of CSI and data associated with the reserved resources does not exceed the threshold value of the preconfigured effective coding rate, the receiving UE can send the multiplexed data to the transmitting UE through the reserved resources by multiplexing the data associated with the reserved resources and the CSI. In this case, when the CSI and the data associated with the reserved resources are multiplexed, CSI transmission based on the preconfigured MCS value can be supported for the reserved resources. In this case, when the CSI and the data associated with the reserved resources are multiplexed, CSI transmission of the size of the transport block or MAC PDU can be supported for the reserved resources. In this case, when the CSI and the data associated with the reserved resources are multiplexed, the priority of the data associated with the reserved resources can be equal to or higher than the priority associated with the CSI. For example, when the CSI and the data associated with the reserved resources are multiplexed, the delay value associated with the reserved resources can be equal to the delay value associated with the CSI or shorter than the delay value associated with the CSI. For example, when the CSI and the data associated with the reserved resources are multiplexed, the reliability of the data associated with the reserved resources can be higher than the reliability associated with the CSI.

[0218] Fig.15 is a diagram illustrating a process of sending a CSI report to a sending UE through resources reserved within a time required for a receiving UE to send the CSI report according to an embodiment of the present disclosure. Fig.16 is a diagram illustrating resources reserved within a time required to send a CSI report according to an embodiment of the present disclosure. Fig.15 and Fig.16 It can be combined with various embodiments of the present disclosure.

[0219] Fig.15 is a diagram illustrating a process in which a receiving UE sends a CSI report to a transmitting UE through a resource selected within a selection window according to an embodiment of the present disclosure. Fig.16 is a diagram illustrating a selection window for selecting resources related to CSI reporting according to an embodiment of the present disclosure. Fig.15 and Fig.16 It can be combined with various embodiments of the present disclosure.

[0220] Reference Fig.15 In step S1510, the transmitting UE may trigger CSI reporting / reporting to the receiving UE. For example, the transmitting UE may send a message for triggering CSI reporting to the receiving UE. For example, the transmitting UE may trigger CSI reporting to the receiving UE via a pre-configured field on the PSCCH or PSSCH (e.g., SCI).

[0221] In step S1520, the transmitting UE may send information related to the CSI report / report to the receiving UE. For example, the transmitting UE may send information related to the CSI report to the receiving UE via PC5 RRC signaling. For example, the information related to the CSI report may include information related to at least one of a logical channel priority (LCP), a side link radio bearer (SLRB), a QoS profile / parameter, QoS requirements (e.g., priority, delay, reliability, minimum required communication range), a waiting time limit, a maximum allowed number of retransmissions, whether to enable / disable side link HARQ feedback, or a multicast option.

[0222] In step S1530, the receiving UE may select resources for CSI reporting / reporting. For example, when there are no reserved resources within the time required to send the CSI report, an operation for selecting resources for CSI reporting may be triggered for the receiving UE. For example, when there are no reserved resources that meet a specific condition within the time required to send the CSI report, it may be determined that the resources may be reserved in a time slot other than the time slot to which the resources belong. For example, if there are no reserved resources within the time required to send the CSI report, the receiving UE may determine a selection window for selecting resources for CSI reporting. For example, the receiving UE may select resources for CSI reporting within the selection window.

[0223] For example, the time required to send the CSI report may be a time based on a waiting time limit. For example, the time required to send the CSI report may be determined based on a preconfigured time window. For example, the time required to send the CSI report may be determined based on preconfigured CSI report related information (e.g., delay requirements). For example, the time required to send the CSI report may be determined based on information related to the preconfigured CSI report and the time for the sending UE to decode the CSI reported by the receiving UE.

[0224] For example, the time required to send the CSI report may be set differently depending on whether only CSI is sent. For example, whether only CSI is sent may include a case where CSI and (one or more) data information / service packets are sent simultaneously and a case where only CSI information is sent. For example, when CSI and (one or more) data information / service packets are sent simultaneously, the time required to send the CSI report may be set longer than when only CSI information is sent.

[0225] Reference Fig.16, the selection window may include a time interval from a time point when the time offset value is applied to a time point when the message for triggering the CSI report is received to a time point when the CSI report needs to be completed. For example, the selection window may be a time interval from a time point when the receiving UE receives a message for triggering the CSI report from the transmitting UE to a time point set based on at least one of a delay limit, a time offset value, or information related to the CSI report. For example, the time offset value may be determined based on at least one of a time required to decode the message for triggering the CSI report, a time required to measure the CSI, or a time required to process the CSI.

[0226] In step S1540, the receiving UE may send the CSI report / report to the transmitting UE via the selected resource. For example, the resource selected for sending the CSI report may be as follows. For example, the selected resource may be a resource in which the priority associated with the selected resource is equal to or lower than the priority associated with the CSI. For example, the selected resource may be a resource in which the delay value associated with the selected resource is equal to the delay value associated with the CSI or is longer than the delay value associated with the CSI. For example, the selected resource may be a resource that satisfies the CSI-related requirements associated with at least one of the size of the time resource, the size of the frequency resource, the number of retransmission resources, the maximum number of retransmissions, the maximum number of allowed retransmissions, whether to support the side link HARQ feedback operation, the side link HARQ feedback type, the transmit power value, or the effective coding rate that can be supported. For example, the selected resource may be a resource that satisfies information related to the CSI report (e.g., priority, delay, reliability, minimum required communication range). For example, the selected resource may be a resource that does not perform the transmission of data associated with the selected resource.

[0227] For example, when the multiplexing of CSI and data associated with the selected resource does not exceed the threshold value of the preconfigured effective coding rate, the receiving UE can send the multiplexed data to the sending UE through the selected resource by multiplexing CSI and data associated with the selected resource. In this case, when CSI and data associated with the selected resource are multiplexed, CSI transmission based on a preconfigured MCS value can be supported for the selected resource. In this case, when CSI and data associated with the selected resource are multiplexed, CSI transmission of the size of a MAC PDU or a transport block can be supported for the selected resource. In this case, when CSI and data associated with the selected resource are multiplexed, the priority of the data associated with the selected resource can be equal to or higher than the priority associated with CSI. For example, when CSI and data associated with the selected resource are multiplexed, the delay value associated with the selected resource can be equal to the delay value associated with CSI or shorter than the delay value associated with CSI. For example, when CSI and data associated with the selected resource are multiplexed, the reliability of the data associated with the selected resource can be higher than the reliability associated with CSI.

[0228] Fig.17 is a diagram illustrating a method in which a first device sends a CSI report to a second device through a resource selected within a selection window according to an embodiment of the present disclosure. Fig.17 It can be combined with various embodiments of the present disclosure.

[0229] In step S1710, the first device 100 may receive information related to a waiting time limit for the secondary link channel state information from the second device 200. For example, the first device 100 may receive information related to a waiting time limit for the secondary link channel state information from the second device 200 through PC5-RRC signaling.

[0230] In step S1720, the first device 100 may select a resource for sending the sub-link channel state information in the selection window based on the absence of a reserved resource within the time window for reporting the sub-link channel state information. For example, the time window may be determined based on information related to the waiting time limit. For example, the selection window may be determined based on at least one of the time window, the time offset value, or the requirement related to the sub-link channel state information. For example, the first device 100 may receive a message triggering a report related to the sub-link channel state information from the second device 200. For example, the start time of the time window may be the time when the message triggering the report related to the sub-link channel state information is received. For example, the time offset value may be determined based on at least one of the time required to decode the message triggering the report related to the received sub-link channel state information, the time required to measure the sub-link channel state information, or the time required to process the sub-link channel information.

[0231] In step S1730, the first device 100 may send a MAC CE including the sidelink channel state information to the second device 200 through the selected resource within the time window. For example, the first device 100 may send the MAC CE to the second device 200 through the selected resource based on the priority of the data related to the selected resource being lower than the priority related to the MAC CE including the sidelink channel state information. For example, based on the MAC-CE being sent, the sidelink HARQ feedback request may be disabled. For example, the first device 100 may omit / skip the transmission of the data related to the selected resource based on the priority of the data related to the selected resource being lower than the priority related to the MAC CE including the sidelink channel state information.

[0232] For example, the selected resource may satisfy requirements associated with preconfigured secondary link channel state information. For example, the requirements associated with preconfigured secondary link channel state information may include at least one of priority, latency, reliability, or minimum required communication range.

[0233] For example, the selected resources may meet requirements related to the sub-link channel state information including at least one of a time interval related to the selected resources, a size of a frequency domain related to the selected resources, a number of retransmission resources related to the selected resources, a number of retransmissions related to the selected resources, whether sub-link HARQ feedback operations are supported, a sub-link HARQ feedback type, a transmission power related to the selected resources, or a coding rate value related to the selected resources.

[0234] For example, the selected resource may be less than a preconfigured threshold associated with a coding rate for sending a MAC CE on the selected resource. For example, when sending a MAC-CE on the selected resource is less than a preconfigured threshold associated with a coding rate, a MAC CE may be multiplexed on the selected resource for data associated with the selected resource.

[0235] For example, in a logical channel priority (LCP) procedure, the priority of the secondary link channel state information may be higher than the priority of the data associated with the service.

[0236] For example, the MAC CE may be sent based on not performing transmission of data related to the selected resource.For example, the first device 100 may send the MAC-CE to the second device 100 based on not performing transmission of data related to the selected resource.

[0237] The above-mentioned embodiments can be applied to various devices to be described below. For example, the processor 102 of the first device 10 can control the transceiver 106 to receive information related to the relevant waiting time limit of the secondary link channel state information from the second device 200. In addition, the processor 102 of the first device 100 can select resources for sending the secondary link channel state information in the selection window based on the absence of reserved resources within the time window for reporting the secondary link channel state information. Then, the processor 102 of the first device 100 can control the transceiver 106 to send a media access control (MAC) control element (CE) including the secondary link channel state information to the second device 200 through the selected resources within the time window.

[0238] According to an embodiment of the present disclosure, a first device for performing wireless communication may be provided. For example, the first device may include: one or more memories 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: receive information related to a waiting time limit related to the sub-link channel state information from the second device; based on the absence of reserved resources within the time window for reporting the sub-link channel state information, select resources for sending the sub-link channel state information within a selection window; and send a media access control (MAC) control element (CE) including the sub-link channel state information to the second device within the time window through the selected resources. For example, the time window may be determined based on the waiting time limit. For example, the selection window may be determined based on at least one of a time window, a time offset value, or a requirement related to the sub-link channel state information.

[0239] According to an embodiment of the present disclosure, a device configured to control a first 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 operatively connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions. The one or more processors may execute the instructions to: receive information related to a waiting time limit related to the sublink channel state information from the second UE; based on the absence of reserved resources within the time window for reporting the sublink channel state information, select resources for sending the sublink channel state information within a selection window; and send a media access control (MAC) control element (CE) including the sublink channel state information to the second UE within the time window through the selected resources. For example, the time window may be determined based on the waiting time limit. For example, the selection window may be determined based on at least one of a time window, a time offset value, or a requirement related to the sublink channel state information.

[0240] According to an embodiment of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, the non-transitory computer-readable storage medium enables a first device to: receive information related to a waiting time limit related to sub-link channel state information from a second device; select resources for sending the sub-link channel state information within a selection window based on the absence of reserved resources within a time window for reporting the sub-link channel state information; and send a media access control (MAC) control element (CE) including the sub-link channel state information to the second device within the time window via the selected resources. For example, the time window may be determined based on the waiting time limit. For example, the selection window may be determined based on at least one of a time window, a time offset value, or a requirement related to the sub-link channel state information.

[0241] Fig.18 is a diagram illustrating a method in which a first device sends a CSI report to a second device through resources reserved within a time window according to an embodiment of the present disclosure. Fig.18 It can be combined with various embodiments of the present disclosure.

[0242] Reference Fig.18 In step S1810, the first device 100 may receive information related to a waiting time limit related to the secondary link channel state information from the second device 200. For example, the first device 100 may receive information related to a waiting time limit related to the secondary link channel state information from the second device 200 through PC5-RRC signaling.

[0243] In step S1820, the first device 100 may transmit one of data or a MAC CE having a higher priority among a priority of data related to the reserved resources and a priority related to a media access control (MAC) control element (CE) including the side-link channel state information, based on the presence of the reserved resources within the time window for reporting the side-link channel state information. For example, the first device 100 may receive a message triggering a report related to the side-link channel state information from the second device 200. For example, the start time of the time window may be the time when the message triggering a report related to the side-link channel state information is received.

[0244] For example, the first device 100 may send the MAC CE to the second device 200 through the reserved resources based on the priority of the data associated with the reserved resources being lower than the priority associated with the MAC CE including the side link channel state information. For example, based on the MAC-CE being sent, the side link HARQ feedback request may be disabled. For example, the first device 100 may omit / skip the sending of the data associated with the reserved resources based on the priority of the data associated with the reserved resources being lower than the priority associated with the MAC CE including the side link channel state information.

[0245] For example, the reserved resources may satisfy requirements associated with the preconfigured secondary link channel state information. For example, the requirements associated with the preconfigured secondary link channel state information may include at least one of priority, latency, reliability, or minimum required communication range.

[0246] For example, the reserved resources may meet requirements related to the sub-link channel state information among at least one of a time interval related to the reserved resources, a size of a frequency domain related to the reserved resources, a number of retransmission resources related to the reserved resources, a number of retransmissions related to the reserved resources, whether the operation of sub-link HARQ feedback is supported, a sub-link HARQ feedback type, a transmission power related to the reserved resources, or a coding rate value related to the reserved resources.

[0247] For example, the reserved resources may be less than a preconfigured threshold associated with a coding rate for sending MAC CEs on the reserved resources. For example, when sending MAC-CEs on the reserved resources is less than a preconfigured threshold associated with a coding rate, MAC CEs may be multiplexed on the reserved resources for data associated with the reserved resources.

[0248] For example, in a logical channel priority (LCP) procedure, the priority of the secondary link channel state information may be higher than the priority of the data associated with the service.

[0249] For example, the MAC CE may be sent based on not performing transmission of data related to the reserved resources.For example, the first device 100 may send the MAC-CE to the second device 100 based on not performing transmission of data related to the reserved resources.

[0250] The above-mentioned embodiments can be applied to various devices to be described below. For example, the processor 102 of the first device 10 can control the transceiver 106 to receive information related to the waiting time limit related to the secondary link channel state information from the second device 200. And, the processor 102 of the first device 100 can control the transceiver 106 to send one of the data with a higher priority or MAC CE among the priority of the data related to the reserved resources and the priority related to the media access control (MAC) control element (CE) including the secondary link channel state information to the second device based on the presence of the reserved resources within the time window for reporting the secondary link channel state information.

[0251] According to an embodiment of the present disclosure, a first device for performing wireless communication may be provided. For example, the first device may include: one or more memories 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: receive information related to a waiting time limit related to the secondary link channel state information from a second device; and based on the presence of reserved resources within a time window for reporting the secondary link channel state information, send data or one of the MAC CEs having a higher priority among the priority of the data related to the reserved resources and the priority related to the media access control (MAC) control element (CE) including the secondary link channel state information to the second device. For example, the time window may be determined based on the waiting time limit.

[0252] Hereinafter, devices to which various embodiments of the present disclosure can be applied will be described.

[0253] 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).

[0254] Hereinafter, a description will be given in more detail with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise described, the same reference numerals may represent the same or corresponding hardware blocks, software blocks or functional blocks.

[0255] Fig.19 A communication system (1) according to an embodiment of the present disclosure is shown.

[0256] Reference Fig.19 , 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 and 100b-2), an extended reality (XR) device (100c), a handheld device (100d), a home appliance (100e), an Internet of Things (IoT) device (100f), and an artificial intelligence (AI) device / server (400). For example, a vehicle may include a vehicle with a wireless communication function, an autonomous vehicle, and a vehicle capable of performing inter-vehicle communication. Herein, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). XR devices may include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices and may be implemented in the form of head mounted devices (HMD), head up displays (HUD) installed in vehicles, televisions, smart phones, computers, wearable devices, home appliance devices, digital signage, vehicles, robots, etc. Handheld devices may include smart phones, smart boards, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., notebooks). Home appliances may include TVs, refrigerators, and washing machines. IoT devices may include sensors and smart meters. For example, a BS and a network may be implemented as wireless devices, and a specific wireless device (200a) may operate as a BS / network node relative to other wireless devices.

[0257] Here, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may include a narrowband Internet of Things for low-power communication in addition to LTE, NR and 6G. In this case, for example, NB-IoT technology may be an example of a low-power wide area network (LPWAN) technology, and may be implemented as a standard such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may perform communication based on LTE-M technology. In this case, as an example, LTE-M technology may be an example of LPWAN, and may be referred to as various names, including enhanced machine type communication (eMTC) and the like. For example, LTE-M technology may be implemented as at least any of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE machine type communication and / or 7) LTE M, and is not limited to the above names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may include at least one of Bluetooth, a low power wide area network (LPWAN), and ZigBee considering low power communication, and is not limited to the above names. As an example, the ZigBee technology may generate a personal area network (PAN) related to small / low power digital communication based on various standards including IEEE 802.15.4, etc., and may be referred to as various names.

[0258] The wireless devices 100a to 100f may be connected to the network 300 via the BS 200. The AI ​​technology may be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f may be connected to the AI ​​server 400 via the network 300. The network 300 may be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although the wireless devices 100a to 100f may communicate with each other via the BS 200 / network 300, the wireless devices 100a to 100f may perform direct communication (e.g., sidelink communication) with each other without passing through the BS / network. For example, the vehicles 100b-1 and 100b-2 may perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). An IoT device (e.g., a sensor) may perform direct communication with other IoT devices (e.g., a sensor) or other wireless devices 100a to 100f.

[0259] Wireless communication / connection 150a, 150b or 150c can be established between wireless devices 100a to 100f / BS200 or BS200 / BS200. Here, the wireless communication / connection can be established through various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication) or inter-BS communication (e.g., relay, integrated access backhaul (IAB)). The wireless device and the BS / wireless device can send / receive radio signals to / from each other through wireless communication / connection 150a and 150b. For example, wireless communication / connection 150a and 150b can send / receive signals through various physical channels. To this end, various configuration information configuration processes for sending / receiving radio signals, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation and resource mapping / demapping) and at least a portion of the resource allocation process can be performed based on various proposals of the present disclosure.

[0260] Fig. 20 A wireless device according to an embodiment of the present disclosure is shown.

[0261] Reference Fig. 20 , the first wireless device (100) and the second wireless device (200) may transmit radio signals via various RATs (e.g., LTE and NR). Herein, {the first wireless device (100) and the second wireless device (200)} may correspond to Fig.19 {wireless device (100x) and BS (200)} and / or {wireless device (100x) and wireless device (100x)}.

[0262] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may additionally further include one or more transceivers 106 and / or one or more antennas 108. The (one or more) processors 102 may control the (one or more) memories 104 and / or the (one or more) transceivers 106, and may be configured to implement the descriptions, functions, processes, proposals, methods and / or operation flows disclosed in this document. For example, the (one or more) processors 102 may process the information in the (one or more) memories 104 to generate first information / signals, and then transmit a radio signal including the first information / signals through the (one or more) transceivers 106. The (one or more) processors 102 may receive a radio signal including a second information / signal through the transceiver 106, and then store the information obtained by processing the second information / signals in the (one or more) memories 104. The (one or more) memories 104 may be connected to the (one or more) processors 102, and may store various information related to the operation of the (one or more) processors 102. For example, (one or more) memories 104 may store software code including commands for executing part or all of the processing controlled by (one or more) processors 102 or for executing the descriptions, functions, processes, proposals, methods and / or operational flows disclosed in this document. Here, (one or more) processors 102 and (one or more) memories 104 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). (One or more) transceivers 106 may be connected to (one or more) processors 102 and send and / or receive radio signals through (one or more) antennas 108. Each transceiver 106 may include a transmitter and / or a receiver. (One or more) transceivers 106 may be used interchangeably with (one or more) radio frequency (RF) units. In the present disclosure, a wireless device may represent a communication modem / circuit / chip.

[0263] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may additionally further include one or more transceivers 206 and / or one or more antennas 208. The (one or more) processors 202 may control the (one or more) memories 204 and / or the (one or more) transceivers 206, and may be configured to implement the descriptions, functions, processes, proposals, methods and / or operation flows disclosed in this document. For example, the (one or more) processors 202 may process the information in the (one or more) memories 204 to generate third information / signals, and then transmit a radio signal including the third information / signals through the (one or more) transceivers 206. The (one or more) processors 202 may receive a radio signal including fourth information / signals through the (one or more) transceivers 106, and then store the information obtained by processing the fourth information / signals in the (one or more) memories 204. The (one or more) memories 204 may be connected to the (one or more) processors 202, and may store various information related to the operation of the (one or more) processors 202. For example, (one or more) memories 204 may store software code including commands for executing part or all of the processing controlled by (one or more) processors 202 or for executing the descriptions, functions, processes, proposals, methods and / or operational flows disclosed in this document. Here, (one or more) processors 202 and (one or more) memories 204 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). (One or more) transceivers 206 may be connected to (one or more) processors 202 and transmit and / or receive radio signals through (one or more) antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. (One or more) transceivers 206 may be used interchangeably with (one or more) RF units. In the present disclosure, a wireless device may represent a communication modem / circuit / chip.

[0264] Below, the hardware elements of the wireless devices 100 and 200 will be described in more detail. One or more protocol layers may be implemented by, but are not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more protocol data units (PDUs) and / or one or more service data units (SDUs) according to the descriptions, functions, processes, proposals, methods, and / or operating procedures disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operating procedures disclosed in this document. One or more processors 102 and 202 may generate a signal (e.g., a baseband signal) including a PDU, SDU, message, control information, data, or information according to the description, function, process, proposal, method, and / or operation flow disclosed in this document, and provide the generated signal to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive a signal (e.g., a baseband signal) from one or more transceivers 106 and 206, and obtain the PDU, SDU, message, control information, data, or information according to the description, function, process, proposal, method, and / or operation flow disclosed in this document.

[0265] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software or a combination thereof. For example, one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs) or one or more field programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods and / or operational flows disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes or functions. Firmware or software configured to perform the descriptions, functions, processes, proposals, methods and / or operational flows disclosed in this document may be included in one or more processors 102 and 202 or stored in one or more memories 104 and 204, thereby being driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods and / or operational flows disclosed in this document may be implemented using software or firmware in the form of codes, commands and / or command sets.

[0266] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and may store various types of data, signals, messages, information, programs, codes, instructions, and / or commands. One or more memories 104 and 204 may be composed of read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drive, register, cash memory, computer-readable storage medium, and / or a combination thereof. One or more memories 104 and 204 may be located inside and / or outside one or more processors 102 and 202. One or more memories 104 and 204 may be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0267] One or more transceivers 106 and 206 may send user data, control information and / or radio signals / channels mentioned in the method and / or operation flow of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information and / or radio signals / channels mentioned in the description, function, process, proposal, method and / or operation flow disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202, and may send and receive radio signals. For example, one or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may send user data, control information or radio signals to one or more other devices. One or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may receive user data, control information or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to send and receive user data, control information, and / or radio signals / channels mentioned in the description, functions, processes, proposals, methods, and / or operation flows disclosed in this document through one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert received radio signals / channels, etc. from RF band signals to baseband signals to process received user data, control information, radio signals / channels, etc. using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert user data, control information, radio signals / channels, etc. processed using one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more of the transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0268] Fig.21 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown.

[0269] Reference Fig.21 The signal processing circuit (1000) may include a scrambler (1010), a modulator (1020), a layer mapper (1030), a precoder (1040), a resource mapper (1050), and a signal generator (1060). Fig.21 Operation / function, not limited to Fig. 20 The processor (102, 202) and / or transceiver (106, 206) of Fig. 20 The processor (102, 202) and / or the transceiver (106, 206) are implemented Fig.21 For example, you can Fig. 20 The processor (102, 202) implements blocks 1010 to 1060. Alternatively, Fig. 20 The processor (102, 202) implements blocks 1010 to 1050 and can be implemented by Fig. 20 The transceiver (106, 206) is used to implement box 1060.

[0270] Can be through Fig.21 The signal processing circuit (1000) converts the codeword into a radio signal. Herein, the codeword is a coded bit sequence of an information block. The information block may include a transport block (e.g., UL-SCH transport block, DL-SCH transport block). The radio signal may be transmitted through various physical channels (e.g., PUSCH and PDSCH).

[0271] Specifically, the codeword can be converted into a scrambled bit sequence by the scrambler 1010. The scrambling sequence for scrambling can be generated based on an initial value, and the initial value can include the ID information of the wireless device. The scrambled bit sequence can be modulated into a modulation symbol sequence by the modulator 1020. The modulation scheme may include pi / 2-binary phase shift keying (pi / 2-BPSK), m-phase shift keying (m-PSK) and m-quadrature amplitude modulation (m-QAM). The complex modulation symbol sequence can be mapped to one or more transmission layers by the layer mapper 1030. The modulation symbol of each transmission layer can be mapped (precoded) to (one or more) corresponding antenna ports by the precoder 1040. The output z of the precoder 1040 can be obtained by multiplying the output y of the layer mapper 1030 with the N*M precoding matrix W. Here, N is the number of antenna ports and M is the number of transmission layers. The precoder 1040 can perform precoding after performing transform precoding (e.g., DFT) for the complex modulation symbol. Alternatively, the precoder 1040 may perform precoding without performing transform precoding.

[0272] The resource mapper 1050 may map the modulation symbols of each antenna port to time-frequency resources. The time-frequency resources may include multiple symbols in the time domain (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) and multiple subcarriers in the frequency domain. The signal generator 1060 may generate a radio signal from the mapped modulation symbols, and the generated radio signal may be sent to other devices through each antenna. For this purpose, 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.

[0273] Can be used with Fig.21 The signal processing process for a signal received in the wireless device is configured in a manner opposite to the signal processing process (1010 to 1060) of the wireless device. Fig. 20 100 and 200) can receive a radio signal from the outside through an antenna port / transceiver. The received radio signal can be converted into a baseband signal by a signal restorer. To this end, the signal restorer may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module. Next, the baseband signal can be restored to a codeword through a resource demapping process, a post-coding process, a demodulation processor, and a descrambling process. The codeword can be restored to the original information block by decoding. Therefore, a signal processing circuit (not illustrated) for receiving a signal may include a signal restorer, a resource demapper, a post-encoder, a demodulator, a descrambler, and a decoder.

[0274] Fig. 22 Another example of a wireless device according to an embodiment of the present disclosure is shown. The wireless device can be implemented in various forms according to use cases / services (see Fig.19 ).

[0275] Reference Fig. 22 , the wireless devices (100 and 200) may correspond to Fig. 20 The wireless devices (100 and 200) may be configured by various elements, components, units / portions and / or modules. For example, each of the wireless devices (100 and 200) may include a communication unit (110), a control unit (120), a memory unit (130) and additional components (140). The communication unit may include a communication circuit (112) and (one or more) transceivers (114). For example, the communication circuit (112) may include Fig. 20 One or more processors (102 and 202) and / or one or more memories (104 and 204) of the present invention. For example, the transceiver (114) may include Fig. 20The control unit (120) is electrically connected to the communication unit (110), the memory (130) and the additional components (140), and controls the overall operation of the wireless device. For example, the control unit (120) can control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit (130). The control unit (120) can send information stored in the memory unit (130) to the outside (e.g., other communication devices) via the communication unit (110) through a wireless / wired interface, or store information received from the outside (e.g., other communication devices) via the communication unit (110) through a wireless / wired interface in the memory unit (130).

[0276] The additional component (140) may be configured in various ways depending on the type of the wireless device. For example, the additional component (140) may include at least one of a power unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device may be implemented in the following forms without limitation: a robot ( Fig.19 100a), vehicles ( Fig.19 100b-1 and 100b-2), XR devices ( Fig.19 100c), handheld device ( Fig.19 100d), household appliances ( Fig.19 100e), IoT devices ( Fig.19 100f), digital broadcast terminal, hologram device, public safety device, MTC device, medical device, fintech device (or financial device), security device, climate / environmental device, AI server / device ( Fig.19 400), BS( Fig.19 200), network nodes, etc. Depending on the use case / service, the wireless device can be used in a mobile or fixed place.

[0277] exist Fig. 22In the wireless device (100 and 200), all the various elements, components, units / parts and / or modules in the wireless device (100 and 200) can be connected to each other through a wired interface, or at least part of them can be connected wirelessly through the communication unit (110). For example, in each of the wireless devices (100 and 200), the control unit (120) and the communication unit (110) can be connected by wire, and the control unit (120) and the first unit (e.g., 130 and 140) can be connected wirelessly through the communication unit (110). Each element, component, unit / part and / or module in the wireless device (100 and 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.

[0278] Hereinafter, the implementation will be described in detail with reference to the accompanying drawings. Fig. 22 .

[0279] Fig.23 A handheld device based on an embodiment of the present disclosure is shown. The handheld device may include a smart phone, a smart board, a wearable device (e.g., a smart watch or smart glasses), or a portable computer (e.g., a notebook). The handheld device may be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT).

[0280] Reference Fig.23 The handheld device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a memory unit (130), a power supply unit (140a), an interface unit (140b) and an I / O unit (140c). The antenna unit (108) may be configured as a part of the communication unit (110). Blocks 110 to 130 / 140a to 140c correspond to Fig. 22 Frame 110 to 130 / 140.

[0281] The communication unit 110 may send and receive signals (e.g., data signals and control signals) to and from other wireless devices or BSs. The control unit 120 may perform various operations by controlling the constituent elements of the handheld device 100. The control unit 120 may include an application processor (AP). The memory unit 130 may store data / parameters / programs / codes / commands required to drive the handheld device 100. The memory unit 130 may store input / output data / information. The power supply unit 140a may supply power to the handheld device 100 and include a wired / wireless charging circuit, a battery, etc. The interface unit 140b may support the connection of the handheld device 100 to other external devices. The interface unit 140b may include various ports (e.g., audio I / O ports and video I / O ports) for connecting to external devices. The I / O unit 140c may input or output video information / signals, audio information / signals, data and / or information input by a user. The I / O unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker and / or a tactile module.

[0282] For example, in the case of data communication, the I / O unit 140c can obtain information / signals (e.g., touch, text, voice, image, or video) input by the user, and the obtained information / signals can be stored in the memory unit 130. The communication unit 110 can convert the information / signals stored in the memory into radio signals, and directly send the converted radio signals to other wireless devices or to the BS. The communication unit 110 can receive radio signals from other wireless devices or BSs, and then restore the received radio signals to the original information / signals. The restored information / signals can be stored in the memory unit 130, and can be output as various types (e.g., text, voice, image, video, or tactile) through the I / O unit 140.

[0283] Fig.24 A vehicle or autonomous vehicle based on 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.

[0284] Reference Fig.24 The vehicle or autonomous vehicle (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a drive unit (140a), a power supply unit (140b), a sensor unit (140c) and an autonomous driving unit (140d). The antenna unit (108) may be configured as a part of the communication unit (110). Blocks 110 / 130 / 140a to 140d correspond to Fig. 22 Frame 110 / 130 / 140.

[0285] The communication unit 110 may send and receive signals (e.g., data signals and control signals) to and from external devices such as other vehicles, BSs (e.g., gNBs and roadside units), and servers. The control unit 120 may perform various operations by controlling elements of the vehicle or autonomous vehicle 100. The control unit 120 may include an electronic control unit (ECU). The drive unit 140a may cause the vehicle or autonomous vehicle 100 to travel on the road. The drive unit 140a may include an engine, a motor, a transmission system, wheels, brakes, a steering device, etc. The power supply unit 140b may supply power to the vehicle or autonomous vehicle 100, and may include a wired / wireless charging circuit, a battery, etc. The sensor unit 140c may acquire vehicle status, external environment information, user information, etc. The sensor unit 140c may include an inertial measurement unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, a slope sensor, a weight sensor, a heading sensor, a position module, a vehicle forward / reverse sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, a lighting sensor, a pedal position sensor, etc. The autonomous driving unit 140d may implement a technology for maintaining a lane in which the vehicle is traveling, a technology for automatically adjusting a speed (e.g., adaptive cruise control), a technology for autonomously driving along a determined path, a technology for driving by automatically setting a path when a destination is set, and the like.

[0286] For example, the communication unit 110 may receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d may generate an autonomous driving path and a driving plan from the acquired data. The control unit 120 may control the drive unit 140a so that the vehicle or the autonomous driving vehicle 100 may move along the autonomous driving path according to the driving plan (e.g., speed / direction control). In the middle of autonomous driving, the communication unit 110 may aperiodically / periodically acquire the most recent traffic information data from an external server and acquire surrounding traffic information data from adjacent vehicles. In the middle of autonomous driving, the sensor unit 140c may acquire vehicle status and / or surrounding environment information. The autonomous driving unit 140d may update the autonomous driving path and driving plan based on the newly acquired data / information. The communication unit 110 may transmit information about the vehicle position, autonomous driving path, and / or driving plan to an external server. The external server may predict traffic information data using AI technology, etc. based on information collected from the vehicle or autonomous driving vehicle, and provide the predicted traffic information data to the vehicle or autonomous driving vehicle.

[0287] The claims in this specification may be combined in various ways. For example, the technical features in the method claims of this specification may be combined to be implemented or performed in a device, and the technical features in the device claims may be combined to be implemented or performed in a method. In addition, the technical features in (one or more) method claims and (one or more) device claims may be combined to be implemented or performed in a device. In addition, the technical features in (one or more) method claims and (one or more) device claims may be combined to be implemented or performed in a method.

Claims

1. A method for performing wireless communication by a first device, the method comprising the following steps: Selecting a first resource for sending a secondary link SL data, wherein the first resource satisfies a remaining packet delay budget PDB of the SL data; receiving information related to a waiting time limit related to secondary link channel state information CSI from a second device, Wherein, the waiting time limit is a waiting time requirement for sending the secondary link CSI; receiving a message triggering a report related to the secondary link CSI; triggering resource reselection based on that the first resource selected to satisfy the remaining PDB of the SL data does not satisfy a condition within a time window, The start time of the time window is the time when a message triggering a report related to the secondary link CSI is received, and wherein the length of the time window for sending the secondary link CSI is determined based on the information related to the waiting time limit; and Sending a medium access control element MAC CE including the secondary link CSI to the second device within the time window through the resource reselected based on the resource reselection.

2. The method according to claim 1, wherein: Information related to the waiting time limit related to the secondary link CSI is received from the second device through PC5 radio resource control RRC signaling.

3. The method according to claim 1, wherein: Based on the priority of data associated with the reselected resource being lower than the priority of data associated with the MAC CE including the secondary link CSI, the MAC CE is transmitted to the second device through the reselected resource.

4. The method according to claim 3, wherein: Based on sending the MAC CE, the secondary link hybrid automatic repeat request HARQ feedback request is disabled.

5. The method according to claim 3, wherein: The transmission of data associated with the reselected resource is skipped.

6. The method according to claim 1, wherein: The reselected resources meet the requirements related to the pre-configured secondary link CSI, and The requirement related to the preconfigured secondary link CSI includes at least one of priority, waiting time, reliability or minimum required communication range.

7. The method according to claim 1, wherein: The reselected resources meet the requirements related to the sublink CSI, including at least one of a time interval related to the reselected resources, a size of a frequency domain related to the reselected resources, a number of retransmissions related to the reselected resources, whether the operation of sublink HARQ feedback is supported, a sublink HARQ feedback type, a transmission power related to the reselected resources, or a coding rate value related to the reselected resources.

8. The method according to claim 1, wherein: The reselected resource is less than a preconfigured threshold associated with a coding rate used to send the MAC CE on the reselected resource.

9. The method according to claim 8, wherein: For data related to the reselected resources, the MAC CE is multiplexed on the reselected resources.

10. The method according to claim 1, wherein: In the logical channel priority LCP process, the priority of the secondary link CSI is higher than the priority of the data related to the service.

11. The method according to claim 1, wherein: The MAC CE is sent based on not sending data related to the reselected resources.

12. A first device configured to perform wireless communication, the first device comprising: one or more memories storing instructions; one or more transceivers; as well as one or more processors connected to the one or more memories and the one or more transceivers, wherein the one or more processors execute the instructions to: Selecting a first resource for sending a secondary link SL data, wherein the first resource satisfies a remaining packet delay budget PDB of the SL data; receiving information related to a waiting time limit related to secondary link channel state information CSI from a second device, Wherein, the waiting time limit is a waiting time requirement for sending the secondary link CSI; receiving a message triggering a report related to the secondary link CSI; triggering resource reselection based on that the first resource selected to satisfy the remaining PDB of the SL data does not satisfy a condition within a time window, The start time of the time window is the time when a message triggering a report related to the secondary link CSI is received, and wherein the length of the time window for sending the secondary link CSI is determined based on the information related to the waiting time limit; and Sending a medium access control element MAC CE including the secondary link CSI to the second device within the time window through the resource reselected based on the resource reselection.

13. A device configured to control a first user equipment UE, the device comprising: one or more processors; as well as one or more memories operatively connected to the one or more processors and storing instructions, wherein the one or more processors execute the instructions to: Selecting a first resource for sending a secondary link SL data, wherein the first resource satisfies a remaining packet delay budget PDB of the SL data; receiving information related to a waiting time limit related to secondary link channel state information CSI from a second UE, Wherein, the waiting time limit is a waiting time requirement for sending the secondary link CSI; receiving a message triggering a report related to the secondary link CSI; triggering resource reselection based on that the first resource selected to satisfy the remaining PDB of the SL data does not satisfy a condition within a time window, The start time of the time window is the time when a message triggering a report related to the secondary link CSI is received, and wherein the length of the time window for sending the secondary link CSI is determined based on the information related to the waiting time limit; and A medium access control element MAC CE including the secondary link CSI is sent to the second UE within the time window through the resource reselected based on the resource reselection.

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