Method and apparatus for selecting NR SL resources considering LTE SL

Abstract

An operating method of a first device 100 in a wireless communication system is proposed, which may include the steps of: performing sensing on at least one candidate slot for resource selection; and updating the candidate resource set based on a result of the sensing obtained based on an LTE SCI, where in the candidate resource set, a resource associated with the LTE SCI and an integer number of resources adjacent in time and frequency to the resource associated with the LTE SCI are excluded.

Description

[Technical Field]

[0001] This disclosure relates to wireless communication systems. [Background technology]

[0002] Sidelink (SL) refers to a communication method that establishes a direct link between terminals (User Equipment, UE) and directly exchanges voice or data between terminals without going through a base station (BS). SL is considered one solution to alleviate the burden on base stations caused by rapidly increasing data traffic. V2X (vehicle-to-everything) refers to a communication technology that exchanges information with other vehicles, pedestrians, and infrastructure via wired or wireless communication. V2X can be divided into four types: V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure), V2N (vehicle-to-network), and V2P (vehicle-to-pedestrian). V2X communication can be provided via the PC5 interface and / or Uu interface.

[0003] On the other hand, as more and more communication devices demand larger communication capacities, the need for improved mobile broadband communication compared to existing radio access technologies (RATs) is emerging. This has led to discussions about communication systems that take into account reliability and latency-sensitive services or terminals, and next-generation radio connectivity technologies that consider improved mobile broadband communication, massive MTC (Machine Type Communication), URLLC (Ultra-Reliable and Low Latency Communication), etc., can be referred to as new RATs (new radio access technology) or NRs (new radio). NRs can also support vehicle-to-everything (V2X) communication.

[0004] Figure 1 is a diagram illustrating a comparison between V2X communication based on RAT prior to NR and V2X communication based on NR. The embodiment in Figure 1 can be combined with various embodiments of this disclosure.

[0005] In relation to V2X communication, prior to NR, RAT primarily discussed methods for providing safety services based on V2X messages such as BSM (Basic Safety Message), CAM (Cooperative Awareness Message), and DENM (Decentralized Environmental Notification Message). V2X messages can include location information, dynamic information, attribute information, etc. For example, a terminal can send a CAM of the periodic message type and / or a DENM of the event-triggered message type to another terminal.

[0006] Since then, various V2X scenarios have been presented in NR in relation to V2X communication. For example, these diverse V2X scenarios can include vehicle platooning, advanced driving, extended sensors, and remote driving. [Overview of the project] [Means for solving the problem]

[0007] According to one embodiment of the present disclosure, a method can be provided for a first device to perform wireless communication. For example, the method includes the steps of triggering resource selection, determining a resource selection window related to the resource selection, determining a candidate resource set within the resource selection window, performing sensing on at least one candidate slot for the resource selection, and updating the candidate resource set based on the results of the sensing, wherein the results of the sensing are obtained based on LTE (longterm evolution) SCI (sidelink control information), and the sensing result-based updating of the candidate resource set may include the step of excluding resources related to the LTE SCI and integer M1 resources adjacent to the frequencies of the resources related to the LTE SCI in the candidate resource set.

[0008] According to one embodiment of the present disclosure, a first device for performing wireless communication can be provided. For example, the first device may include one or more memories for storing instructions, one or more transceivers, and one or more processors connecting the one or more memories and the one or more transceivers. For example, the one or more processors may execute the instructions to trigger resource selection, determine a resource selection window related to the resource selection, determine a candidate resource set within the resource selection window, perform sensing on at least one candidate slot for the resource selection, and update the candidate resource set based on the results of the sensing, the results of which are obtained based on LTE (longterm evolution) SCI (sidelink control information), and the sensing result-based update of the candidate resource set may include the step of excluding resources related to the LTE SCI and integer M1 resources adjacent to the frequencies of the resources related to the LTE SCI in the candidate resource set.

[0009] According to one embodiment of the present disclosure, an apparatus is provided configured to control a first terminal. For example, the apparatus may include one or more processors and one or more memories connected to and storing instructions so as to be executed by the one or more processors. For example, the one or more processors may execute the instructions to trigger a resource selection, determine a resource selection window related to the resource selection, determine a candidate resource set within the resource selection window, perform sensing on at least one candidate slot for the resource selection, update the candidate resource set based on the results of the sensing, the results of the sensing are obtained based on LTE (longterm evolution) SCI (sidelink control information), and the sensing result-based update of the candidate resource set may include the step of excluding resources related to the LTE SCI and integer M1 resources adjacent to the frequencies of the resources related to the LTE SCI in the candidate resource set.

[0010] According to one embodiment of the present disclosure, a non-temporary computer-readable storage medium recording instructions is provided. For example, when executed, the instructions cause a first device to trigger a resource selection, determine a resource selection window related to the resource selection, determine a candidate resource set within the resource selection window, perform sensing on at least one candidate slot for the resource selection, update the candidate resource set based on the results of the sensing, the results of the sensing are obtained based on LTE (longterm evolution) SCI (sidelink control information), and the sensing result-based update of the candidate resource set may include the step of excluding resources related to the LTE SCI and integer M1 resources adjacent to the frequencies of the resources related to the LTE SCI in the candidate resource set.

[0011] According to one embodiment of the present disclosure, a method can be provided for a second device to perform wireless communication. For example, the method includes the steps of: receiving NR (new radio) SCI (sidelink control information) for scheduling a PSSCH (physical sidelink shared channel) from a first device via a PSCCH (physical sidelink control channel) based on an SL (sidelink) resource; and receiving MAC (medium access control) PDU (protocol data unit) from the first device via the PSSCH based on the SL resource, wherein the SL resource is selected in a candidate resource set, the candidate resource set included in a resource selection window determined in a resource pool is updated based on sensing results, and the sensing result-based update of the candidate resource set may include the step of excluding an integer M1 resources in the candidate resource set that are adjacent to the frequencies of the resources related to the LTE (longterm evolution) SCI and the resources related to the LTE SCI.

[0012] According to an embodiment of the present disclosure, a second device capable of performing wireless communication can be provided. For example, the second device can include one or more memories for storing instructions, one or more transceivers, and one or more processors for connecting the one or more memories and the one or more transceivers. For example, the one or more processors execute the instructions to receive, via a PSCCH (physical sidelink control channel) from a first device, NR (new radio) SCI (sidelink control information) for scheduling of a PSSCH (physical sidelink shared channel) based on a SL (sidelink) resource, receive a MAC (medium access control) PDU (protocol data unit) from the first device via the PSSCH based on the SL resource, the SL resource is selected from a candidate resource set, the candidate resource set included in a resource selection window determined within a resource pool is updated based on a sensing result, and the update of the sensing result-based candidate resource set can include steps of excluding resources related to the LTE (longterm evolution) SCI and an integer M1 number of resources adjacent to the frequency of the resources related to the LTE SCI in the candidate resource set.

Advantages of the Invention

[0013] The terminal can efficiently perform SL communication.

Brief Description of the Drawings

[0014] [Figure 1] The drawings are for explaining by comparing V2X communication based on a RAT prior to NR and V2X communication based on NR.

[0015] [Figure 2] [[ID=二十一]]

[0016] [Figure 3] Shows a radio protocol architecture according to an embodiment of the present disclosure.

[0017] [Figure 4] Shows the structure of an NR radio frame according to an example of the present disclosure.

[0018] [Figure 5] Shows the slot structure of an NR frame according to an example of the present disclosure.

[0019] [Figure 6] Shows an example of a BWP according to an example of the present disclosure.

[0020] [Figure 7] Shows a terminal that performs V2X or SL communication according to an example of the present disclosure.

[0021] [Figure 8] Shows the procedure by which a terminal performs V2X or SL communication in transmission mode according to an example of the present disclosure.

[0022] [Figure 9] Shows three cast types according to an example of the present disclosure.

[0023] [Figure 10] Shows an embodiment of determining a candidate resource set for SL communication based on LTE SCI according to an embodiment of the present disclosure.

[0024] [Figure 11] Shows an embodiment of determining a candidate resource set for SL communication based on LTE SCI according to an embodiment of the present disclosure.

[0025] [Figure 12] Shows the procedure by which a first device performs wireless communication according to an embodiment of the present disclosure.

[0026] [Figure 13] The present disclosure describes a procedure for a second device to perform wireless communication according to one embodiment of this disclosure.

[0027] [Figure 14] This document shows a communication system 1 according to one embodiment of the present disclosure.

[0028] [Figure 15] This document shows a wireless device according to one embodiment of the present disclosure.

[0029] [Figure 16] This document shows a signal processing circuit for a transmission signal according to one embodiment of the present disclosure.

[0030] [Figure 17] This document shows a wireless device according to one embodiment of the present disclosure.

[0031] [Figure 18] This document shows a portable device according to one embodiment of the present disclosure.

[0032] [Figure 19] This shows a vehicle or autonomous vehicle relating to one embodiment of the present disclosure. [Modes for carrying out the invention]

[0033] In this specification, "A or B" may mean "just A," "just B," or "both A and B." Furthermore, in this specification, "A or B" may be interpreted as "A and / or B." For example, in this specification, "A, B or C" may mean "just A," "just B," "just C," or "any combination of A, B and C."

[0034] In this specification, slashes ( / ) and commas can mean "and / or". For example, "A / B" can mean "A and / or B". Thus, "A / B" can mean "just A", "just B", or "both A and B". For example, "A, B, C" can mean "A, B or C".

[0035] In this specification, "at least one of A and B" can mean "just A," "just B," or "both A and B." Furthermore, in this specification, the expressions "at least one of A or B" and "at least one of A and / or B" can be interpreted in the same way as "at least one of A and B."

[0036] Furthermore, in this specification, "at least one of A, B and C" may mean "just A," "just B," "just C," or "any combination of A, B and C." Also, "at least one of A, B or C" or "at least one of A, B and / or C" may mean "at least one of A, B and C."

[0037] Furthermore, parentheses used in this specification can mean "for example." Specifically, when "control information (PDCCH)" is shown, "PDCCH" is proposed as an example of "control information." Also, "control information" in this specification is not limited to "PDCCH," and "PDDCH" is proposed as an example of "control information." Furthermore, when "control information (i.e., PDCCH)" is shown, "PDCCH" is proposed as an example of "control information."

[0038] In this specification, technical features described individually within a single drawing may be represented individually or simultaneously.

[0039] The following technologies can be used in a variety of wireless communication systems, such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), and SC-FDMA (single carrier frequency division multiple access). CDMA can be implemented using wireless technologies such as UTRA (universal terrestrial radio access) and CDMA2000. TDMA can be implemented using wireless technologies such as GSM (global system for mobile communications) / GPRS (general packet radio service) / EDGE (enhanced data rates for GSM evolution). OFDMA can be implemented using wireless technologies such as IEEE (institute of electrical and electronics engineers) 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), IEEE 802-20, and E-UTRA (evolved UTRA). IEEE 802.16m is an evolution of IEEE 802.16e and provides backward compatibility with systems based on IEEE 802.16e. UTRA is part of UMTS (Universal Mobile Telecommunications System). 3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution) is part of E-UMTS (Evolved UMTS) which uses E-UTRA (Evolved-UMTS Terrestrial Radio Access), employing OFDMA for downlink and SC-FDMA for uplink.LTE-A (advanced) is an evolution of 3GPP LTE.

[0040] 5G NR is a successor technology to LTE-A and is a new clean-slate form of mobile communication system with characteristics such as high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, from the low-frequency band below 1 GHz to the intermediate-frequency band of 1 GHz to 10 GHz, and the high-frequency (millimeter wave) band above 24 GHz.

[0041] To clarify the explanation, the description will focus on 5G NR, but the technical concept relating to one embodiment of this disclosure is not limited thereto.

[0042] Figure 2 shows the structure of an NR system according to one embodiment of the present disclosure. The embodiment in Figure 2 can be combined with various embodiments of the present disclosure.

[0043] Referring to Figure 2, the NG-RAN (Next Generation-Radio Access Network) may include a base station 20 that provides user-plane and control-plane protocol termination to the terminal 10. For example, the base station 20 may include a gNB (next generation-NodeB) and / or an eNB (evolved-NodeB). For example, the terminal 10 may be fixed or mobile, and is also referred to by other terms such as MS (Mobile Station), UT (User Terminal), SS (Subscriber Station), MT (Mobile Terminal), Wireless Device, etc. For example, the base station is a fixed station that communicates with the terminal 10, and is also referred to by other terms such as BTS (Base Transceiver System), Access Point, etc.

[0044] The embodiment in Figure 2 illustrates a case that includes only gNBs. The base stations 20 can be connected to each other via Xn interfaces. The base stations 20 can be connected to the 5th generation core network (5G Core Network: 5GC) via NG interfaces. More specifically, the base stations 20 can be connected to the AMF (access and mobility management function) 30 via the NG-C interface and to the UPF (user plane function) 30 via the NG-U interface.

[0045] The layers of the Radio Interface Protocol (RRC) between a terminal and a network can be divided into L1 (First Layer), L2 (Second Layer), and L3 (Third Layer) based on the three lower layers of the Open System Interconnection (OSI) standard model, which is widely known in communication systems. Of these, the physical layer, which belongs to the first layer, provides information transfer services using physical channels, while the RRC (Radio Resource Control) layer, located in the third layer, plays the role of controlling radio resources between the terminal and the network. To this end, the RRC layer exchanges RRC messages between the terminal and the base station.

[0046] Figure 3 shows a radio protocol architecture according to one embodiment of the present disclosure. The embodiment of Figure 3 can be combined with various embodiments of the present disclosure. Specifically, Figure 3(a) shows a user-plane radio protocol stack for Uu communication, Figure 3(b) shows a control-plane radio protocol stack for Uu communication, Figure 3(c) shows a user-plane radio protocol stack for SL communication, and Figure 3(d) shows a control-plane radio protocol stack for SL communication.

[0047] Referring to Figure 3, the physical layer provides information transfer services to higher layers using physical channels. The physical layer is connected to the higher layer, the MAC (Medium Access Control) layer, via transport channels. Data moves between the MAC layer and the physical layer via transport channels. Transport channels are classified according to how and with what characteristics data is transmitted via the wireless interface.

[0048] Data travels between different physical layers, i.e., between the physical layers of the transmitter and receiver, via a physical channel. This physical channel can be modulated using the OFDM (Orthogonal Frequency Division Multiplexing) method, utilizing time and frequency as wireless resources.

[0049] The MAC layer provides services to the higher-level RLC (radio link control) layer via logical channels. The MAC layer provides mapping functionality from multiple logical channels to multiple transport channels. Furthermore, the MAC layer provides logical channel multiplexing functionality through mapping from multiple logical channels to a single transport channel. The MAC sub-layer provides data transfer services on logical channels.

[0050] The RLC hierarchy performs concatenation, segmentation, and reassembly of RLC SDUs (Service Data Units). To ensure the diverse Quality of Service (QoS) requirements of radio bearers (RBs), the RLC hierarchy provides three operating modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). AM RLC provides error correction via ARQ (automatic repeat request).

[0051] The RRC (Radio Resource Control) layer is defined only in the control plane. The RRC layer is responsible for controlling logical channels, transmit channels, and physical channels in relation to the configuration, reconfiguration, and release of radio bearers. RB refers to the logical path provided by the first layer (physical layer or PHY layer) and the second layer (MAC layer, RLC layer, PDCP (Packet Data Convergence Protocol) layer, SDAP (Service Data Adaptation Protocol) layer) for data transmission between the terminal and the network.

[0052] The functions of the PDCP hierarchy on the user plane include the transmission of user data, header compression, and encryption. The functions of the PDCP hierarchy on the control plane include the transmission of control plane data and encryption / integrity protection.

[0053] The SDAP (Service Data Adaptation Protocol) layer is defined only at the user level. The SDAP layer performs tasks such as mapping QoS flows to data radio bearers and marking QoS flow identifiers (IDs) in downlink and uplink packets.

[0054] Setting up a Radio Bearing (RB) refers to the process of defining the characteristics of the radio protocol hierarchy and channel in order to provide a specific service, and setting the specific parameters and operating methods for each. Furthermore, RBs are divided into two types: SRB (Signaling Radio Bearer) and DRB (Data Radio Bearer). The SRB is used as a channel for transmitting RRC messages in the control plane, while the DRB is used as a channel for transmitting user data in the user plane.

[0055] When an RRC connection is established between the terminal's RRC layer and the base station's RRC layer, the terminal enters the RRC_CONNECTED state; otherwise, it enters the RRC_IDLE state. In the case of NR, an additional RRC_INACTIVE state is defined, in which a terminal in the RRC_INACTIVE state can maintain its connection with the core network and release its connection with the base station.

[0056] Downlink transport channels, which transmit data from the network to terminals, include BCH (Broadcast Channel) for transmitting system information and Downlink SCH (Shared Channel) for transmitting user traffic and control messages. Downlink multicast or broadcast service traffic or control messages can be transmitted via Downlink SCH or via a separate Downlink MCH (Multicast Channel). On the other hand, uplink transport channels, which transmit data from terminals to the network, include RACH (Random Access Channel) for transmitting initial control messages and Uplink SCH (Shared Channel) for transmitting user traffic and control messages.

[0057] Above the transport channel level, logical channels mapped to the transport channel include BCCH (Broadcast Control Channel), PCCH (Paging Control Channel), CCCH (Common Control Channel), MCCH (Multicast Control Channel), and MTCH (Multicast Traffic Channel).

[0058] Figure 4 shows the structure of a wireless frame of NR according to one embodiment of the present disclosure. The embodiment in Figure 4 can be combined with various embodiments of the present disclosure.

[0059] Referring to Figure 4, in NR, radio frames can be used for uplink and downlink transmissions. A radio frame has a length of 10 ms and can be defined as two 5 ms half-frames (HF). A half-frame can contain five 1 ms subframes (SF). A subframe can be divided into one or more slots, and the number of slots within a subframe can be determined by the subcarrier spacing (SCS). Each slot can contain 12 or 14 OFDM(A) symbols by a cyclic prefix (CP).

[0060] When normal CP is used, each slot can contain 14 symbols. When extended CP is used, each slot can contain 12 symbols. Here, symbols can include OFDM symbols (or CP-OFDM symbols), SC-FDMA (Single Carrier-FDMA) symbols (or DFT-s-OFDM (Discrete Fourier Transform-spread-OFDM) symbols).

[0061] Table 1 below shows the number of symbols per slot (N) depending on the SCS setting (u) when a normal CP is used. slot symb ), number of slots per frame (N frame,u slot ) and the number of slots per subframe (N subframe,u slot ) is an example.

[0062] [Table 1]

[0063] Table 2 illustrates the number of symbols per slot, the number of slots per frame, and the number of slots per subframe when the extended CP is used, as determined by the SCS.

[0064] [Table 2]

[0065] In an NR system, OFDM(A) numerology (e.g., SCS, CP length, etc.) can be configured to differ between multiple cells merged into a single terminal. This allows the (absolute time) intervals of time resources (e.g., subframes, slots, or TTIs) (commonly referred to as TUs (Time Units) for convenience), which consist of the same number of symbols, to be configured differently between the merged cells.

[0066] In NR, a number of numerologies or SCSs can be supported to support a variety of 5G services. For example, if the SCS is 15kHz, wide area coverage on traditional cellular bands can be supported, and if the SCS is 30kHz / 60kHz, dense-urban, lower latency, and wider carrier bandwidth can be supported. If the SCS is 60kHz or higher, bandwidths greater than 24.25GHz can be supported to overcome phase noise.

[0067] An NR frequency band can be defined as two types of frequency ranges. These two types of frequency ranges are FR1 and FR2. The numerical values ​​of the frequency ranges can be changed; for example, the two types of frequency ranges are as shown in Table 3 below. Among the frequency ranges used in NR systems, FR1 can mean the "sub 6GHz range," and FR2 can mean the "above 6GHz range," which can be called millimeter wave (mmW).

[0068] [Table 3]

[0069] As mentioned above, the numerical values ​​of the frequency range of the NR system can be changed. For example, FR1 can include a bandwidth of 410 MHz to 7125 MHz, as shown in Table 4 below. That is, FR1 can include frequency bands of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher. For example, frequency bands of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher included within FR1 can include unlicensed bands. Unlicensed bands can be used for a variety of applications, for example, for vehicle communications (e.g., autonomous driving).

[0070] [Table 4]

[0071] Figure 5 shows a slot structure of an NR frame according to one embodiment of the present disclosure. The embodiment in Figure 5 can be combined with various embodiments of the present disclosure.

[0072] Referring to Figure 5, a slot contains multiple symbols in the time domain. For example, in the case of a normal CP, one slot can contain 14 symbols, and in the case of an extended CP, one slot can contain 12 symbols. Alternatively, in the case of a normal CP, one slot can contain 7 symbols, and in the case of an extended CP, one slot can contain 6 symbols.

[0073] A carrier wave contains multiple subcarriers in the frequency domain. A Resource Block (RB) can be defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A Bandwidth Part (BWP) can be defined as multiple consecutive (P)RBs ((Physical) Resource Blocks) in the frequency domain and can correspond to a single numerology (e.g., SCS, CP length, etc.). A carrier wave can contain up to N (e.g., 5) BWPs. Data communication can be performed via activated BWPs. Each element is called a Resource Element (RE) in the resource grid and can be mapped to a single complex symbol.

[0074] The following explains BWP (Bandwidth Part) and carriers.

[0075] A Bandwidth Part (BWP) is a contiguous set of Physical Resource Blocks (PRBs) for a given numerology. PRBs can be selected from a contiguous subset of Common Resource Blocks (CRBs) for a given numerology on a given carrier.

[0076] For example, a BWP is at least one of the active BWP, initial BWP, and / or default BWP. For example, a terminal may not monitor downlink radiolink quality on DL BWPs other than the active DL BWP on the PCell (primary cell). For example, a terminal does not receive PDCCH, PDSCH (physical downlink shared channel), or CSI-RS (reference signal) (except RRM) outside of an active DL BWP. For example, a terminal does not trigger a CSI (Channel State Information) report for an inactive DL BWP. For example, a terminal does not transmit PUCCH (physical uplink control channel) or PUSCH (physical uplink shared channel) outside of an active UL BWP. For example, when downlink, the initial BWP is given as a continuous RB set for the RMSI (remaining minimum system information) CORESET (control resource set) (set by the PBCH (physical broadcast channel)). For example, in the case of an uplink, the initial BWP is provided by the SIB (system information block) for random access procedures. For example, the default BWP is set by the upper layer. For example, the initial value of the default BWP is the initial DL BWP. For energy saving purposes, if a terminal is unable to detect DCI for a certain period of time, the terminal can switch its active BWP to the default BWP.

[0077] On one hand, the BWP can be defined for the SL. The same SL BWP can be used for transmission and reception. For example, a transmitting terminal can transmit an SL channel or an SL signal on a specific BWP, and a receiving terminal can receive the SL channel or the 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 separate configuration signalling from the Uu BWP. For example, a terminal can receive the configuration for the SL BWP from a base station / network. For example, a terminal can receive the configuration for the Uu BWP from a base station / network. The SL BWP can be (pre)configured for out-of-coverage NR V2X terminals and RRC_IDLE terminals within a carrier. For terminals in the RRC_CONNECTED mode, at least one SL BWP can be activated within a carrier.

[0078] [[ID=Z4]]FIG. 6 shows an example of a BWP according to an embodiment of the present disclosure. The embodiment of FIG. 6 can be combined with various embodiments of the present disclosure. In the embodiment of FIG. X6, it is assumed that there are three BWPs.

[0079] Referring to FIG. 6, a CRB (common resource block) is a carrier resource block numbered from one end of a carrier band to the other end. And a PRB is a resource block numbered within each BWP. Point A can indicate a common reference point for a resource block grid. [[ID=Z9]]

[0080] The BWP is based on point A, the offset (N start BWP ) from point A, and the bandwidth (N size BWP Note: There seems to be some inconsistent or unclear notations in the original text like "図6の実施例は、本開示の多様な実施例と結合されることができる。図6の実施例において、BWPは、3個と仮定する。" which might need further clarification in the source context. Also, the translation of "図6" as "FIG. X6" in the translation of ID=4 is a temporary placeholder as the original text might have some error in the figure reference naming. It should be corrected to "FIG. 6" if the original is correct.It can be set by the following: For example, point A is the outer reference point of the PRB of the carrier to which subcarrier 0 of all numerologies (e.g., all numerologies supported by the network on the carrier in question) is aligned. For example, offset is the PRB interval between the lowest subcarrier in a given numerology and point A. For example, bandwidth is the number of PRBs in a given numerology.

[0081] The following explanation applies to V2X or SL communication.

[0082] SLSS (Sidelink Synchronization Signal) is an SL-specific sequence that may include PSSS (Primary Sidelink Synchronization Signal) and SSSS (Secondary Sidelink Synchronization Signal). The PSSS may be referred to as S-PSS (Sidelink Primary Synchronization Signal), and the SSSS may be referred to as S-SSS (Sidelink Secondary Synchronization Signal). For example, length-127M-sequences can be used for S-PSS, and length-127Gold sequences can be used for S-SSS. For example, a terminal can use S-PSS to detect the initial signal and acquire synchronization. For example, a terminal can use S-PSS and S-SSS to acquire detailed synchronization and detect the synchronization signal ID.

[0083] The PSBCH (Physical Sidelink Broadcast Channel) is a broadcast channel that transmits fundamental (system) information that terminals should know first before transmitting or receiving SL signals. For example, this fundamental information includes information related to SLSS, duplex mode (DM), TDDUL / DL (Time Division Duplex Uplink / Downlink) configuration, resource pool-related information, application types related to SLSS, subframe offset, and broadcast information. For example, to evaluate PSBCH performance, in NR V2X, the size of the PSBCH payload is 56 bits, including a 24-bit CRC (Cyclic Redundancy Check).

[0084] S-PSS, S-SSS, and PSBCH can be included in a block format that supports periodic transmission (e.g., an SLSS (Synchronization Signal) / PSBCH block, hereinafter referred to as S-SSB (Sidelink-Synchronization Signal Block)). The S-SSB can have the same numerology (i.e., SCS and CP lengths) as the PSCCH (Physical Sidelink Control Channel) / PSSCH (Physical Sidelink Shared Channel) in the carrier, and its transmission bandwidth is within a (pre-configured) Sidelink Bandwidth Part (SL BWP). For example, the bandwidth of the S-SSB is 11RB (Resource Block). For example, the PSBCH spans 11RB. The frequency position of the S-SSB can be (pre-configured). Therefore, the terminal does not need to perform hypothesis detection on frequency to find the S-SSB in the carrier.

[0085] Figure 7 shows a terminal performing V2X or SL communication according to one embodiment of the present disclosure. The embodiment in Figure 7 can be combined with various embodiments of the present disclosure.

[0086] Referring to Figure 7, the term "terminal" in V2X or SL communication can primarily refer to a user's terminal. However, if network equipment such as a base station transmits and receives signals using a terminal-to-terminal communication method, the base station can also be considered a type of terminal. For example, terminal 1 is the first device 100, and terminal 2 is the second device 200.

[0087] For example, terminal 1 can select a resource unit corresponding to a specific resource within a resource pool, which represents a collection of a series of resources. Terminal 1 can then transmit an SL signal using the resource unit. For example, terminal 2, a receiving terminal, can receive the settings for the resource pool to which terminal 1 can transmit signals, and can detect terminal 1's signals within the resource pool.

[0088] If terminal 1 is within the base station's range, the base station can inform terminal 1 of the resource pool. Conversely, if terminal 1 is outside the base station's range, another terminal can inform terminal 1 of the resource pool, or terminal 1 can use a pre-configured resource pool.

[0089] Generally, a resource pool can consist of multiple resource units, and each terminal can select one or more resource units to use for transmitting its SL signal.

[0090] The following explains resource allocation in SL.

[0091] Figure 8 illustrates a procedure in which a terminal performs V2X or SL communication by transmission mode according to one embodiment of the present disclosure. The embodiment in Figure 8 can be combined with various embodiments of the present disclosure. In the various embodiments of the present disclosure, the transmission mode may be referred to as a mode or resource allocation mode. Hereinafter, for convenience of explanation, in LTE, the transmission mode may be referred to as the LTE transmission mode, and in NR, the transmission mode may be referred to as the NR resource allocation mode.

[0092] For example, Figure 8(a) shows terminal operation associated with LTE transmission mode 1 or LTE transmission mode 3. Alternatively, for example, Figure 8(a) shows terminal operation associated with NR resource allocation mode 1. For example, LTE transmission mode 1 can be applied to general SL communication, and LTE transmission mode 3 can be applied to V2X communication.

[0093] For example, Figure 8(b) shows terminal operation associated with LTE transmission mode 2 or LTE transmission mode 4. Or, for example, Figure 8(b) shows terminal operation associated with NR resource allocation mode 2.

[0094] Referring to Figure 8(a), in LTE transmission mode 1, LTE transmission mode 3, or NR resource allocation mode 1, the base station can schedule SL resources used by the terminal for SL transmission. For example, the base station can perform resource scheduling to terminal 1 via PDCCH (e.g., DCI (Downlink Control Information)) or RRC signaling (e.g., Configured Grant Type 1 or Configured Grant Type 2), and terminal 1 can perform V2X or SL communication with terminal 2 based on the resource scheduling. For example, terminal 1 can send SCI (Sidelink Control Information) to terminal 2 via PSCCH (Physical Sidelink Control Channel), and then send data based on the SCI to terminal 2 via PSSCH (Physical Sidelink Shared Channel).

[0095] Referring to Figure 8(b), in LTE transmission mode 2, LTE transmission mode 4, or NR resource allocation mode 2, the terminal can determine an SL transmission resource from SL resources set by the base station / network or from a pre-configured SL resource. For example, the set SL resources or pre-configured SL resources are a resource pool. For example, the terminal can autonomously select or schedule resources for SL transmission. For example, the terminal can autonomously select resources from a set resource pool and perform SL communication. For example, the terminal can perform sensing and resource (re)selection procedures and autonomously select resources within a selection window. For example, the sensing can be performed on a subchannel basis. Then, terminal 1, having autonomously selected resources from the resource pool, can transmit an SCI to terminal 2 via PSCCH, and then transmit data based on the SCI to terminal 2 via PSSCH.

[0096] For example, a terminal can support SL resource selection for other terminals. For example, in NR resource allocation mode 2, a terminal is configured with a set grant for SL transmission. For example, in NR resource allocation mode 2, a terminal can schedule SL transmissions for other terminals. For example, in NR resource allocation mode 2, a terminal can reserve SL resources for blind retransmissions.

[0097] For example, in NR resource allocation mode 2, the first terminal can use SCI to instruct the second terminal on the priority of SL transmission. For example, the second terminal can decode the SCI and perform sensing and / or resource (re)selection based on the priority. For example, the resource (re)selection procedure may include the steps of the second terminal identifying candidate resources in a resource selection window and the second terminal selecting a resource for (re)transmission from among the identified candidate resources. For example, the resource selection window may be a time interval in which terminals select resources for SL transmission. For example, after the second terminal triggers resource (re)selection, the resource selection window may start from T1≧0 and may be limited by the second terminal's remaining packet delay budget. For example, in the step where a second terminal identifies candidate resources in a resource selection window, if a specific resource is indicated by an SCI received by the first terminal and the L1 SL RSRP measurement value for that specific resource exceeds the SL RSRP threshold, the second terminal may not determine that specific resource as a candidate resource. For example, the SL RSRP threshold can be determined based on the priority of SL transmissions indicated by the SCI received by the first terminal and the priority of SL transmissions on the resource selected by the second terminal.

[0098] For example, the L1 SL RSRP can be measured based on the SL DMRS (Demodulation Reference Signal). For example, one or more PSSCH DMRS patterns are set or pre-configured in the time domain for each resource pool. For example, PDSCH DMRS setting types 1 and / or 2 may be the same as or similar to the frequency domain pattern of PSSCH DMRS. For example, the exact DMRS pattern is indicated by the SCI. For example, in NR resource allocation mode 2, the transmitting terminal can select a specific DMRS pattern from among the DMRS patterns set or pre-configured for the resource pool.

[0099] For example, in NR resource allocation mode 2, based on the sensing and resource (re)selection procedure, the transmitting terminal can perform the initial transmission of a Transport Block (TB) without reservation. For example, based on the sensing and resource (re)selection procedure, the transmitting terminal can reserve an SL resource for the initial transmission of a second TB using the SCI associated with the first TB.

[0100] For example, in NR resource allocation mode 2, a terminal can reserve resources for feedback-based PSSCH retransmissions via signaling related to previous transmissions of the same TB (Transport Block). For example, the maximum number of SL resources reserved by a single transmission, including the current transmission, may be 2, 3, or 4. For example, the maximum number of SL resources is the same whether HARQ feedback is enabled or not. For example, the maximum number of HARQ(re)transmissions for a single TB may be limited by a setting or pre-configuration. For example, the maximum number of HARQ(re)transmissions may be up to 32. For example, if there is no such setting or pre-configuration, the maximum number of HARQ(re)transmissions may be unspecified. For example, the setting or pre-configuration may be for the transmitting terminal. For example, in NR resource allocation mode 2, HARQ feedback is supported to release resources that the terminal does not use.

[0101] For example, in NR resource allocation mode 2, a terminal can use SCI to instruct other terminals of one or more subchannels and / or slots used by the terminal. For example, a terminal can use SCI to instruct other terminals of one or more subchannels and / or slots reserved by the terminal for PSSCH(re)transmission. For example, the smallest allocation unit of SL resources may be a slot. For example, the size of a subchannel may be set or pre-set for the terminal.

[0102] The following is an explanation of SCI (Sidelink control information).

[0103] Control information transmitted by a base station to a terminal via a PDCCH is called DCI (Downlink Control Information), while control information transmitted by a terminal to another terminal via a PSCCH can be called SCI. For example, a terminal may know the start symbol of a PSCCH and / or the number of symbols in a PSCCH before decoding it. For example, an SCI may include SL scheduling information. For example, a terminal may send at least one SCI to another terminal to schedule a PSSCH. For example, one or more SCI formats are defined.

[0104] For example, a transmitting terminal can send an SCI over a PSCCH to a receiving terminal. The receiving terminal can decode one SCI to receive the PSCCH from the transmitting terminal.

[0105] For example, a transmitting terminal can transmit two consecutive SCIs (e.g., 2-stage SCIs) on a PSCCH and / or PSSCH to a receiving terminal. The receiving terminal can decode the two consecutive SCIs (e.g., 2-stage SCIs) to receive the PSSCH from the transmitting terminal. For example, if the SCI configuration fields are divided into two groups to accommodate a (relatively) high SCI payload size, the SCI containing the first SCI configuration field group can be used as the first SCI or 1 st It can be called an SCI, and an SCI that includes a second SCI constituent field group can be called a second SCI or 2 nd This can be referred to as SCI. For example, a transmitting terminal can send a first SCI to a receiving terminal via a PSCCH. For example, a transmitting terminal can send a second SCI to a receiving terminal on the PSCCH and / or PSSCH. For example, the second SCI is sent to the receiving terminal via a (separate) PSCCH or piggybacked and sent via the PSSCH along with the data. For example, two consecutive SCIs can also be applied to each other in relation to other transmissions (e.g., unicast, broadcast, or groupcast).

[0106] For example, the transmitting terminal can send some or all of the following information to the receiving terminal via the SCI. Here, for example, the transmitting terminal can send some or all of the following information to the receiving terminal via the first SCI and / or the second SCI.

[0107] -PSSCH and / or PSCCH-related resource allocation information, e.g., time / frequency resource location / number, resource reservation information (e.g., period), and / or

[0108] -SL CSI Report Request Indicator or SL(L1)RSRP (and / or SL(L1)RSRQ and / or SL(L1)RSSI) Report Request Indicator, and / or

[0109] -(on PSSCH) SL CSI transmit indicator (or SL(L1)RSRP (and / or SL(L1)RSRQ and / or SL(L1)RSSI) information transmit indicator), and / or

[0110] - MCS information, and / or

[0111] -Transmitted power information, and / or

[0112] -L1 destination ID information and / or L1 source ID information and / or

[0113] -SL HARQ process ID information, and / or

[0114] - NDI (New Data Indicator) information, and / or

[0115] -RV (Redundancy Version) information, and / or

[0116] -(Transmit traffic / packet-related) QoS information, e.g., priority information, and / or

[0117] - Information on the number of SL CSI-RS transmit indicators or (transmitted) SL CSI-RS antenna ports.

[0118] -Location information of the transmitting terminal or location (or distance range) information of the target receiving terminal (for which SL HARQ feedback is required), and / or

[0119] -Reference signal (e.g., DMRS) information related to decoding and / or channel estimation of data transmitted via PSSCH, e.g., information related to the pattern of the (time-frequency) mapping resource of the DMRS, rank information, antenna port index information;

[0120] For example, the first SCI may include information related to channel sensing. For example, a receiving terminal can decode the second SCI using PSSCH DMRS. The polar code used for PDCCH can be applied to the second SCI. For example, in a resource pool, the payload size of the first SCI is the same for unicast, groupcast, and broadcast. After decoding the first SCI, the receiving terminal does not need to perform blind decoding of the second SCI. For example, the first SCI may include scheduling information for the second SCI.

[0121] On the other hand, in various embodiments of this disclosure, the transmitting terminal can transmit at least one of SCI, the first SCI, and / or the second SCI to the receiving terminal via PSCCH, so that PSCCH can be substituted for at least one of SCI, the first SCI, and / or the second SCI. And / or, for example, SCI can be substituted for at least one of PSCCH, the first SCI, and / or the second SCI. And / or, for example, the transmitting terminal can transmit the second SCI to the receiving terminal via PSSCH, so that PSSCH can be substituted for the second SCI.

[0122] Figure 9 shows three cast types relating to one embodiment of the present disclosure. The embodiment in Figure 9 can be combined with various embodiments of the present disclosure. Specifically, Figure 9(a) shows broadcast-type SL communication, Figure 9(b) shows unicast-type SL communication, and Figure 9(c) shows groupcast-type SL communication. In the case of unicast-type SL communication, a terminal can perform one-to-one communication with other terminals. In the case of groupcast-type SL communication, a terminal can perform SL communication with one or more terminals within the group to which it belongs. In various embodiments of the present disclosure, SL groupcast communication can be replaced with SL multicast communication, SL one-to-many communication, etc.

[0123] For example, in this disclosure, available resources (and / or available resource sets) means candidate resource sets. For example, the candidate resource sets mean a set of candidate resources that the MAC layer reports to the MAC layer at the physical layer of the terminal for the MAC layer to select a transmit resource.

[0124] On the other hand, in the next-generation system, terminals are permitted to perform sidelink (SL) channel / signal transmission and / or reception operations based on different RATs (radio access technologies) (e.g., LTE (Longterm Evolution) and / or NR (New Radio)) within a single carrier or cell. In one embodiment of this disclosure, the above features can also be extended to apply when a terminal performs multiple different RAT-based SL transmission and reception operations simultaneously via a single RF device and / or BB (baseband) device.

[0125] On the other hand, for example, the waveform, signal generation method, DC (direct current) position, SCS (subcarrier spacing), subcarrier offset, and CP length may differ depending on the RAT for SL transmission and reception or for PSCCH and / or PSSCH transmission and reception. Specifically, for example, in the case of LTE SL, the SC-FDMA or DFT-precoded OFDM method is used, the SCS is 15 kHz, the DC position has a subcarrier offset of 7.5 kHz from the center of the system bandwidth, and normal CP and extended CP are permitted for the CP length. On the other hand, for example, in the case of NR SL, the OFDM or CP-OFDM method is used, the SCS is allowed to be 15kHz, 30kHz, 60kHz, 120kHz, etc. depending on the (pre)setting, the DC position is either a specific subcarrier position within the SL BWP or RB grid, or a specific position outside the SL BWP or RB grid depending on the (pre)setting, the subcarrier offset is allowed to be +7.5kHz, 0kHz, -7.5kHz depending on the (pre)setting, and the general CP is supported in the CP length, with extended CP being supported only when the SCS is 60kHz. Also, for example, in LTE SL, SL operation was possible for all symbols in a subframe or slot, but in NR SL, SL operation is only possible for a symbol interval of the number of SL symbols in the slot (hereinafter, SL_SYMBOL_LENGTH) from the starting SL symbol index (hereinafter, SL_SYMBOL_START) set in the (pre)setting.

[0126] On the other hand, when SL channel / signal transmission and / or reception operations are performed on a single carrier or cell based on different RATs, when a terminal attempts to perform an NR SL operation, it must avoid the resources occupied by the LTE SL operation. That is, the terminal can choose to avoid the resources reserved by the LTE SL operation and select NR SL transmission resources under certain conditions (e.g., when the RSRP measurement is higher than the RSRP threshold), taking those resources into consideration. For example, the terminal is provided with all the settings for LTE SL operation (resource pool settings, information for the carrier, and / or RB grid information) and NR SL operation (resource pool settings, SL BWP settings, information for the carrier, RB grid information, and / or DC information) via (pre)configuration or from the base station. For example, this is to allow the terminal to perform resource (re)selection based on LTE SCI and / or LTE DCI and / or NR SCI and / or NR DCI.

[0127] For example, when transmission and / or reception operations of SL channels / signals based on different RATs are performed within a single carrier or cell, the terminal can expect that the resource pool for LTE SL and the resource pool or SL BWP for NR SL do not overlap in the frequency domain and / or time domain. For example, the terminal can expect that the frequency-side spacing associated with the resource pool for LTE SL and the frequency-side spacing associated with the resource pool or SL BWP for NR SL are above a certain level (e.g., a certain number or more RBs or a certain number or more subcarriers based on LTE SL or NR SL). That is, the terminal can expect that LTE SL operations and NR SL operations are TDM (time division multiplex) or FDM (frequency division multiplex) with respect to each other within the carrier.

[0128] On the other hand, when resource pools for LTE SL operation and NR SL operation overlap, it is necessary to define how resource exclusion procedures are performed when selecting resources for a terminal. In particular, when the SCS and / or subcarrier offsets differ between LTE SL and NR SL, the resource block (RB) boundaries may not be aligned, and interference between adjacent RBs may be significant. Specifically, for example, in the aforementioned situation, even if the frequency-side positions of the wave-shaped main lobe and / or side lobes do not overlap and are adjacent, high interference can occur in an intrusive manner in RB grids with relatively small SCSs.

[0129] For example, if a terminal performs transmission and / or reception operations of SL channels / signals based on different RATs within a single carrier or cell, it can expect the RB boundaries of LTE SL and NR SL to be the same. For example, the SCS of LTE SL and NR SL may be the same in the carrier. For example, the subcarrier offsets of LTE SL and NR SL may be the same in the carrier. For example, the DC positions of LTE SL and NR SL may be the same in the carrier. For example, the subchannel boundaries of LTE SL and NR SL may be aligned in the carrier.

[0130] In this case, according to one embodiment of the present disclosure, a terminal performing NR SL operation can receive LTE SL control information and execute a process to exclude candidate resources in the NR SL resource selection window that overlap with reserved resources derived therefrom from the available resources. For example, a terminal performing NR SL operation can receive LTE SL control information and execute a process to exclude all candidate resources in the NR SL slot that overlap with reserved resources derived therefrom from the available resources. For example, the resource exclusion process can be limited to being executed only when the RSRP value measured by the terminal based on the LTE SL channel is greater than or equal to a (pre-set) threshold. Or, for example, LTE SL reserved resources can always be avoided when selecting an NR SL resource, regardless of the RSRP measurement. For example, the RSRP threshold can be set to be different from the RSRP threshold for the received NR SL. For example, a terminal performing LTE SL operation can receive NR SL control information and execute a process to exclude candidate resources in the LTE SL resource selection window that overlap with reserved resources derived therefrom from the available resources. For example, the resource exclusion process can be limited to being executed only when the RSRP value measured by the terminal based on the LTE SL channel is greater than or equal to a (pre-set) threshold. For example, the RSRP threshold can be set to be different from the RSRP threshold for the received LTE SL.

[0131] On the other hand, if LTE SL and NR SL have different SCS and / or subcarrier offsets and / or DC positions, it may be necessary to create guard regions above / below and / or before / after the region that overlaps with the reserved resource. According to one embodiment of the present disclosure, a terminal performing NR SL operation can receive LTE SL control information and perform a process of excluding candidate resources in the NR SL resource selection window that overlap with the reserved resource derived therefrom from the available resources, and further exclude candidate resources adjacent to the excluded candidate resources on the frequency side and / or time axis from the available resources.

[0132] For example, in the case of LTE SL reservation resources with different SCSs and NR SL candidate resources that overlap as described above, the terminal can generate bins for LTE SL with only LTE SL SCSs from each subcarrier center for LTE SL, and generate bins for NR SL with only NR SL SCSs from each subcarrier center for NR SL, and then determine whether there is overlap from a bin perspective.

[0133] Figure 10 shows an embodiment of the present disclosure in which a candidate resource set for SL communication is determined based on LTE SCI. The embodiment of Figure 10 can be combined with various embodiments of the present disclosure.

[0134] Referring to Figure 10(a), the subcarriers used in NR communication are shown. In this embodiment, the subcarriers associated with the candidate resources used in NR communication are f a3 and f a1 and f a2 These are the respective f a3 These are the two extremes of RB using subcarriers. Here, the SCS used in NR communication is f a2 -f a1 It is possible. Here, for example, f a4 ~f a5 According to the embodiments of this disclosure, f a3 This could be a bin from which only NR SL SCS was generated (hereinafter referred to as the NR bin).

[0135] Referring to Figure 10(b), the subcarriers used in LTE communication are shown. In this embodiment, the subcarrier associated with the candidate resource used in LTE communication is f b3 and f b1 and f b2 These are the respective f b3 These are the two extremes of RB using subcarriers. Here, the SCS used in LTE communication is f b2 -f b1 It is possible. Here, for example, f b4 ~f b5 According to the embodiments of this disclosure, f b3 This could be a bin where only LTE SL SCS were generated (hereinafter referred to as the LTE bin).

[0136] Referring to Figure 10(c), the candidate resources related to NR communication are NRRB(t1, t2, f a1 ,f a2 ) and LTE RB (t1, t2, f b1 ,f b2 ) is shown. If the embodiments of this disclosure do not apply, the two RBs do not overlap, so a terminal performing NR communication does not exclude the NR RB in the candidate resource set.

[0137] Referring to Figure 10(d), when the NR bin and LTE bin according to the embodiment of this disclosure are applied, the region where the two bins overlap is shown. According to this disclosure, if the NR bin associated with a candidate resource overlaps with the LTE bin identified based on the LTE SCI, the transmitting terminal can determine that the candidate resource and the LTE RB identified based on the LTE SCI overlap and exclude the candidate resource from the candidate resource set. Therefore, in this embodiment, since there is an overlapping region when the NR bin and LTE bin are applied, the transmitting terminal can exclude the NR RB from the candidate resource set.

[0138] According to one embodiment of the present disclosure, when a terminal excludes overlapping resources in a candidate resource set, it can exclude N adjacent candidate resources from the excluded candidate resources in each frequency and / or time direction from the available resources. For example, the value of N may be a (pre-set) value. For example, the value of N may be different for each direction. For example, the value of N may be set to be different for each SCS of NR SL and / or for each subcarrier offset and / or for each subchannel size. For example, if an NR SL terminal excludes candidate resources corresponding to R_x, y based on LTE SL reserved resources from the available resources, the terminal can further exclude R_x-N, y, R_x-(N-1), y, Wud, R_x-1, y, and / or R_x+1, y, R_x+2, y, Wud, R_x+M, y from the available resources. For example, N and M are the same value in the above, but they may also be set to be different values.

[0139] Figure 11 shows an embodiment of the present disclosure in which a candidate resource set for SL communication is determined based on LTE SCI. The embodiment in Figure 10 can be combined with various embodiments of the present disclosure.

[0140] Referring to Figure 11, a candidate resource set is shown for a transmitting terminal performing NR communication to report to a higher layer (e.g., MAC). For example, the central colored RB(t1, f1) (hereinafter referred to as duplicate RB) can indicate a resource that overlaps with the resource identified based on LTE SCI.

[0141] Furthermore, for example, the diagonal RB can represent resources adjacent in time and frequency to the overlapping RB (hereinafter referred to as adjacent resources). For example, the adjacent resources can include resources that are N1 time-ahead of the overlapping RB (t1-N1) to resources that are N2 time-ahead of the overlapping RB (t1+N2). For example, the adjacent resources can include resources with a frequency M1 lower than the overlapping RB (f1-M1) to resources with a frequency M2 higher than the overlapping RB (f1+M2). For example, N1 and N2 may be the same or different and can be set separately for the SCS and / or subcarrier offset. Also, for example, M1 and M2 may be the same or different and can be set separately for the SCS and / or subcarrier offset.

[0142] For example, the transmitting terminal can exclude resources that are temporally and / or frequencyally adjacent to the overlapping resource in the candidate resource set. That is, in the embodiment shown in Figure 11, the transmitting terminal can exclude the adjacent resource along with the overlapping RB in the candidate resource set.

[0143] On the other hand, information exchange between LTE SL modems and NR SL modems is required for the terminal group to acquire and utilize SL reservation resource information, in which case the definition or timeline for the sensing window needs to be changed. According to one embodiment of this disclosure, when selecting an NR SL resource, the sensing window for the terminal can be set to be different for acquiring an NR SL reservation resource and for acquiring an LTE SL reservation resource. For example, when the NR SL resource selection operation is triggered in slot N, the end time of the sensing window for acquiring an LTE SL reservation resource may be the sum of T_proc, 0 and the X value from slot N. For example, T_proc, 0 is the time required to acquire the sensing result, and may be 1, 1, 2, and 4 slots for SCS 15kHz, 30kHz, 60kHz, and 120kHz, respectively. For example, the X value is the time required for information exchange between LTE SL modems and NR SL modems in the terminal group, and may be a value determined by terminal capability. For example, the start time of the sensing window for acquiring an LTE SL reservation resource may be 1 second before slot N. For example, in the case of LTE SL reserved resources, the terminal may apply information obtained from the LTE SL SCI to the LTE SL resource pool and / or LTE SL available resources to derive the resource.

[0144] On the other hand, there are cases where LTE SL operation and NR SL operation cannot be performed simultaneously in a single group of terminals. In such cases, when selecting resources for NR SL transmission by a terminal, the timing of LTE SL transmission and / or reception must be considered. According to one embodiment of the present disclosure, a terminal can perform a resource selection process by excluding candidate resources for NR SL slots that overlap with the timing of scheduled LTE SL transmission and / or LTE SL reception from the available resources. For example, the consideration of information regarding LTE SL transmission and reception timing may be limited to cases where sufficient processing time is available after the terminal detects an LTE SCI. For example, the exclusion method may be applied only when, as a result of a direct comparison of the priority of LTE SL and the priority of NR SL transmission in a group of terminals, LTE SL has a higher priority. For example, the resource exclusion operation for LTE SL transmission or reception timing may be limited to cases where the terminal decides to exclude a reserved resource (i.e., a retransmission resource) for the same TB.

[0145] On the other hand, a terminal may not be able to perform LTE SL reception or NR SL reception even when performing sensing operations. According to one embodiment of the present disclosure, when a terminal performs NR SL resource selection, if it is unable to perform a reception operation for LTE SCI in the sensing window, the terminal may derive an LTE SL reserved resource based on the whole or a part of the resource reservation period value based on LTE SL, and again exclude candidate resources and / or additional adjacent candidate resources that overlap with NR SL from the available resources.

[0146] For example, the resource reservation period candidate value used when deriving the LTE SL reserved resource, which is assumed when excluding NR SL candidate resources due to the non-detection of LTE SCI, may be set (in advance) on the terminal. For example, if the amount of available resources relative to the total resources in the NR SL resource selection window is below or less than a (in advance) set threshold due to the exclusion of NR SL candidate resources due to the non-detection of LTE SCI, the terminal can cancel the resource exclusion due to the non-detection of LTE SCI. For example, if the amount of available resources relative to the total resources in the NR SL resource selection window is below or less than a (in advance) set threshold due to the exclusion of NR SL candidate resources due to the non-detection of LTE SCI, the terminal can execute the resource selection process by changing the available resource ratio to the ratio of "available resources" to "the amount of resources after excluding the NR SL candidate resource due to the non-detection of LTE SCI in the total resources in the NR SL resource selection window."

[0147] In the embodiments of this disclosure, a method for considering LTE SL reserved resources when selecting NR SL resources has been described. However, the concept of the present invention can be extended and applied in the opposite way, by considering NR SL reserved resources when selecting LTE SL resources.

[0148] While embodiments of this disclosure describe a method for cases where LTE SL and NR SL operate simultaneously on the same carrier, the concept of the present invention can be extended to other environments where NR SL operates simultaneously with other RAT-based SL or V2X, or where NR SLs using different transmission parameters (e.g., SCS and / or subcarrier offset and / or DC position) operate simultaneously.

[0149] In embodiments of this disclosure, in the case of NR SL operation, the resource selection process may include resource reselection and / or preemption operations. Alternatively, for example, different methods from the embodiments described above may be selected and operated for resource selection, resource reselection, and preemption.

[0150] The proposed method can be applied to the apparatus described below. First, the receiving terminal's processor 202 can configure at least one BWP. Then, the receiving terminal's processor 202 can control the receiving terminal's transceiver 206 to receive SL-related physical channels and / or SL-related reference signals from the transmitting terminal on at least one BWP.

[0151] According to existing technologies, the resource selection process did not take into account the different SCS and / or subcarrier offsets between RATs. According to the embodiments of this disclosure, the resource selection process can take into account the different SCS and / or subcarrier offsets between RATs, thereby reducing the collisions that may occur in inter-RAT communication and enabling inter-RAT communication.

[0152] Figure 12 illustrates a procedure in which a first device performs wireless communication according to one embodiment of the present disclosure. The embodiment in Figure 12 can be combined with various embodiments of the present disclosure.

[0153] Referring to Figure 12, in step S1210, the first device can trigger resource selection. In step S1220, the first device can determine the resource selection window related to the resource selection. In step S1230, the first device can determine a candidate resource set within the resource selection window. In step S1240, the first device can perform sensing on at least one candidate slot for the resource selection. In step S1250, the first device can update the candidate resource set based on the sensing results. For example, the sensing results are obtained based on LTE (longterm evolution) SCI (sidelink control information), and the sensing result-based update of the candidate resource set may include the step of: excluding resources related to the LTE SCI and integer M1 resources adjacent to the frequencies of the resources related to the LTE SCI in the candidate resource set.

[0154] For example, the aforementioned resource selection can be associated with NR (new radio) SL (sidelink) communication.

[0155] For example, the first device further acquires an LTE SL SCS (subcarrier spacing) based on the LTE SCI; and an NR SL SCS related to the NR SL communication, but the updating of the sensing result-based candidate resource set is performed on the basis that the LTE SL SCS and the NR SL SCS are different.

[0156] For example, the first device further acquires an LTE SL subcarrier offset based on the LTE SCI; and an NR SL subcarrier offset related to the NR SL communication, but the updating of the sensing result-based candidate resource set is performed on the basis that the LTE SL subcarrier offset and the NR SL subcarrier offset are different.

[0157] For example, the first device further acquires an LTE SL DC (direct current) location based on the LTE SCI; and an NR SL DC location related to the NR SL communication, but the updating of the sensing result-based candidate resource set is performed on the basis that the LTE SL DC location and the NR SL DC location are different.

[0158] For example, the first device further acquires an LTE SL SCS based on the LTE SCI; acquires an NR SL SCS related to the NR SL communication; generates an LTE SL bin based on the LTE SL SCS; generates an NR SL bin based on the NR SL SCS; and determines resources related to the LTE SCI based on the LTE SL bin and the NR SL bin, but based on the overlap between the LTE SL bin and the NR SL bin, the resources related to the LTE SL bin are determined as resources related to the LTE SCI.

[0159] For example, N2 can be set separately for each SCS related to the NR SL communication.

[0160] For example, updating the sensing result-based candidate resource set includes the step of excluding the resource related to the LTE SCI and N1 integer resources adjacent to the time of the resource related to the LTE SCI in the candidate resource set, wherein the N1 resources include N2 integer resources preceding the resource related to the LTE SCI and N3 integer resources following the resource related to the LTE SCI, and N1 may be the sum of N2 and N3.

[0161] For example, N2 and N3 may be different.

[0162] For example, the M1 resources include M2 ​​integer resources with frequencies higher than the frequency of the resource associated with the LTE SCI and M3 integer resources with frequencies lower than the frequency of the resource associated with the LTE SCI, and M1 may be the sum of M2 and M3.

[0163] For example, M2 and M3 may be different.

[0164] For example, the update of the candidate resource set based on the sensing results is performed based on whether the RSRP (reference signal received power) value measured based on the LTE SCI is greater than or equal to a first RSRP threshold.

[0165] For example, the first RSRP threshold may differ from the second RSRP threshold used for NR SL communication.

[0166] The embodiments described above are applicable to various devices as described below. For example, the processor 102 of the first device 100 can trigger resource selection. The processor 102 of the first device 100 can determine a resource selection window related to the resource selection. The processor 102 of the first device 100 can determine a candidate resource set within the resource selection window. The processor 102 of the first device 100 can perform sensing on at least one candidate slot for the resource selection. The processor 102 of the first device 100 can update the candidate resource set based on the results of the sensing. For example, the sensing results are obtained based on LTE (longterm evolution) SCI (sidelink control information), and the sensing result-based update of the candidate resource set may include the step of: excluding resources related to the LTE SCI and integer M1 resources adjacent to the frequencies of the resources related to the LTE SCI in the candidate resource set.

[0167] According to one embodiment of the present disclosure, a first device for performing wireless communication can be provided. For example, the first device may include one or more memories for storing instructions, one or more transceivers, and one or more processors connecting the one or more memories and the one or more transceivers. For example, the one or more processors execute the instructions to trigger resource selection, determine a resource selection window related to the resource selection, determine a candidate resource set within the resource selection window, perform sensing on at least one candidate slot for the resource selection, and update the candidate resource set based on the results of the sensing, wherein the results of the sensing are obtained based on LTE (longterm evolution) SCI (sidelink control information), and the sensing result-based update of the candidate resource set may include the step of excluding resources related to the LTE SCI and integer M1 resources adjacent to the frequencies of the resources related to the LTE SCI in the candidate resource set.

[0168] For example, the aforementioned resource selection can be associated with NR (new radio) SL (sidelink) communication.

[0169] For example, the first device further acquires an LTE SL SCS (subcarrier spacing) based on the LTE SCI, acquires an NR SL SCS related to the NR SL communication, and updates the sensing result-based candidate resource set are performed based on the fact that the LTE SL SCS and the NR SL SCS are different.

[0170] For example, the first device further acquires an LTE SL subcarrier offset based on the LTE SCI and an NR SL subcarrier offset related to the NR SL communication, and the updating of the sensing result-based candidate resource set is performed based on the fact that the LTE SL subcarrier offset and the NR SL subcarrier offset are different.

[0171] For example, the first device further acquires an LTE SL DC (direct current) location based on the LTE SCI, acquires an NR SL DC location related to the NR SL communication, and updates the sensing result-based candidate resource set are performed on the basis that the LTE SL DC location and the NR SL DC location are different.

[0172] For example, the first device further acquires an LTE SL SCS based on the LTE SCI, acquires an NR SL SCS related to the NR SL communication, generates an LTE SL bin based on the LTE SL SCS, generates an NR SL bin based on the NR SL SCS; and determines resources related to the LTE SCI based on the LTE SL bin and the NR SL bin, and determines that the resources related to the LTE SL bin are resources related to the LTE SCI based on the overlap between the LTE SL bin and the NR SL bin.

[0173] For example, N2 can be set separately for each SCS related to the NR SL communication.

[0174] For example, updating the sensing result-based candidate resource set includes the step of excluding the resource related to the LTE SCI and N1 integer resources adjacent to the time of the resource related to the LTE SCI from the candidate resource set, wherein the N1 resources include N2 integer resources preceding the resource related to the LTE SCI and N3 integer resources succeeding to the resource related to the LTE SCI, and N1 may be the sum of N2 and N3.

[0175] For example, N2 and N3 may be different.

[0176] For example, the M1 resources include M2 ​​integer resources with frequencies higher than the frequency of the resource associated with the LTE SCI and M3 integer resources with frequencies lower than the frequency of the resource associated with the LTE SCI, and M1 may be the sum of M2 and M3.

[0177] For example, M2 and M3 may be different.

[0178] For example, the update of the candidate resource set based on the sensing results is performed based on whether the RSRP (reference signal received power) value measured based on the LTE SCI is greater than or equal to a first RSRP threshold.

[0179] For example, the first RSRP threshold may differ from the second RSRP threshold used for NR SL communication.

[0180] According to one embodiment of the present disclosure, an apparatus is provided configured to control a first terminal. For example, the apparatus may include one or more processors and one or more memories connected to and storing instructions so as to be executed by the one or more processors. For example, the one or more processors may execute the instructions to trigger a resource selection, determine a resource selection window related to the resource selection, determine a candidate resource set within the resource selection window, perform sensing on at least one candidate slot for the resource selection, and update the candidate resource set based on the results of the sensing, the results of which are obtained based on LTE (longterm evolution) SCI (sidelink control information), and the sensing result-based update of the candidate resource set may include the step of excluding resources related to the LTE SCI and integer M1 resources adjacent to the frequencies of the resources related to the LTE SCI in the candidate resource set.

[0181] According to one embodiment of the present disclosure, a non-temporary computer-readable storage medium recording instructions is provided. For example, when executed, the instructions cause a first device to trigger a resource selection, determine a resource selection window related to the resource selection, determine a candidate resource set within the resource selection window, perform sensing on at least one candidate slot for the resource selection, update the candidate resource set based on the results of the sensing, the results of the sensing are obtained based on LTE (longterm evolution) SCI (sidelink control information), and the sensing result-based update of the candidate resource set may include the step of excluding resources related to the LTE SCI and integer M1 resources adjacent to the frequencies of the resources related to the LTE SCI in the candidate resource set.

[0182] Figure 13 illustrates a procedure in which a second device performs wireless communication according to one embodiment of the present disclosure. The embodiment in Figure 13 can be combined with various embodiments of the present disclosure.

[0183] Referring to Figure 13, in step S1310, the second device can receive NR (new radio) SCI (sidelink control information) for scheduling the PSSCH (physical sidelink shared channel) from the first device via the PSCCH (physical sidelink control channel) based on the SL (sidelink) resource. In step S1320, the second device can receive MAC (medium access control) PDU (protocol data unit) from the first device via the PSSCH based on the SL resource. For example, the SL resource is selected in a candidate resource set, the candidate resource set included in the resource selection window determined in the resource pool is updated based on sensing results, and the sensing result-based update of the candidate resource set may include the step of: excluding an integer M1 resources in the candidate resource set that are adjacent to the frequencies of the resources related to the LTE (longterm evolution) SCI and the resources related to the LTE SCI.

[0184] For example, the resources associated with the LTE SL are determined based on the LTE SL bin and the NR SL bin, the LTE SL bin is generated based on the LTE SL SCS (subcarrier spacing), the NR SL bin is generated based on the NR SL SCS, and based on the overlap between the LTE SL bin and the NR SL bin, the resources associated with the LTE SL bin are determined as resources associated with the LTE SCI.

[0185] The embodiments described above can be applied to various devices as described below. For example, the processor 202 of the second device 200 can control the transceiver 206 to receive NR (new radio) SCI (sidelink control information) for scheduling the PSSCH (physical sidelink shared channel) from the first device 100 via the PSCCH (physical sidelink control channel) based on the SL (sidelink) resources. The processor 202 of the second device 200 can then control the transceiver 206 to receive MAC (medium access control) PDU (protocol data unit) from the first device 100 via the PSSCH based on the SL resources. For example, the SL resources are selected in a candidate resource set, the candidate resource set included in the resource selection window determined in the resource pool is updated based on sensing results, and the sensing result-based update of the candidate resource set may include the step of: excluding the resources related to the LTE (longterm evolution) SCI and an integer M1 resources adjacent to the frequencies of the resources related to the LTE SCI in the candidate resource set.

[0186] According to one embodiment of the present disclosure, a second device for performing wireless communication can be provided. For example, the second device may include one or more memories for storing instructions, one or more transceivers, and one or more processors connecting the one or more memories and the one or more transceivers. For example, the one or more processors execute the instructions to receive NR (new radio) SCI (sidelink control information) for scheduling a PSSCH (physical sidelink shared channel) via a PSCCH (physical sidelink control channel) from a first device based on an SL (sidelink) resource, receive MAC (medium access control) PDU (protocol data unit) via the PSSCH from the first device based on the SL resource, the SL resource is selected in a candidate resource set, the candidate resource set included in a resource selection window determined in a resource pool is updated based on sensing results, and the sensing result-based update of the candidate resource set may include the step of: excluding an integer M1 resources in the candidate resource set that are adjacent to the frequencies of the resources related to the LTE (longterm evolution) SCI and the resources related to the LTE SCI.

[0187] For example, the resources associated with the LTE SL are determined based on the LTE SL bin and the NR SL bin, the LTE SL bin is generated based on the LTE SL SCS (subcarrier spacing), the NR SL bin is generated based on the NR SL SCS, and based on the overlap between the LTE SL bin and the NR SL bin, the resources associated with the LTE SL bin are determined as resources associated with the LTE SCI.

[0188] The various embodiments of this disclosure can be combined with each other.

[0189] The following describes devices to which various embodiments of this disclosure can be applied.

[0190] Without limiting itself, the various descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in this document can be applied to a variety of fields requiring wireless communication / connection (e.g., 5G) between devices.

[0191] The following will provide more specific examples with reference to the drawings. In the following drawings / descriptions, the same drawing reference numerals may illustrate the same or corresponding hardware blocks, software blocks, or functional blocks unless otherwise specified.

[0192] Figure 14 shows a communication system 1 according to one embodiment of the present disclosure.

[0193] Referring to Figure 14, the communication system 1 to which various embodiments of this disclosure apply includes wireless equipment, base stations, and networks. Here, wireless equipment means equipment that performs communication using wireless connectivity technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)), and is referred to as communication / wireless / 5G equipment. However, wireless equipment can also include, but is not limited to, robots 100a, vehicles 100b-1, 100b-2, XR (eXtended Reality) equipment 100c, handheld devices 100d, home appliances 100e, IoT (Internet of Things) equipment 100f, and AI equipment / servers 400. For example, vehicles can include vehicles equipped with wireless communication capabilities, autonomous vehicles, and vehicles capable of performing vehicle-to-vehicle communication. Here, vehicles can also include UAVs (Unmanned Aerial Vehicles) (e.g., drones). XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices and can be embodied in forms such as HMDs (Head-Mounted Devices), HUDs (Head-Up Displays) installed in vehicles, televisions, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, and robots. Portable devices can include smartphones, smart pads, wearable devices (e.g., smartwatches, smart glasses), and computers (e.g., notebooks). Home appliances can include TVs, refrigerators, and washing machines. IoT devices can include sensors and smart meters. For example, base stations and networks can be embodied in wireless devices, and specific wireless devices 200a can also operate as base stations / network nodes for other wireless devices.

[0194] Here, the wireless communication technologies implemented in the wireless devices 100a to 100f of this specification may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. In this case, for example, NB-IoT technology is an example of LPWAN (Low Power Wide Area Network) technology and can be implemented as standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the names mentioned above. Furthermore, or generally, the wireless communication technologies implemented in the wireless devices 100a to 100f of this specification can communicate based on LTE-M technology. In this case, for example, LTE-M technology is an example of LPWAN technology and is called by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology can be implemented in at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the names mentioned above. Furthermore, the wireless communication technologies implemented in the wireless devices 100a to 100f of this specification may include, or generally may not include, at least one of ZigBee®, Bluetooth®, and Low Power Wide Area Network (LPWAN), which take low-power communication into consideration. For example, Zigbee technology can generate personal area networks (PANs) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and is known by various names.

[0195] Wireless devices 100a to 100f can be connected to the network 300 via the base station 200. Artificial Intelligence (AI) technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can be connected to the AI ​​server 400 via the network 300. The network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Wireless devices 100a to 100f can communicate with each other via the base station 200 / network 300, but they can also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles 100b-1 and 100b-2 can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to everything) communication). Furthermore, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0196] Wireless communication / connection 150a, 150b, and 150c can be performed between wireless devices 100a-100f / base station 200 and between base stations 200 / base station 200. Here, wireless communication / connection can be performed via uplink / downlink communication 150a, sidelink communication 150b (or D2D communication), and communication between base stations 150c (e.g., relay, IAB (Integrated Access Backhaul), or various other wireless connectivity technologies (e.g., 5G NR)). Wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals from each other via wireless communication / connection 150a, 150b, and 150c. For example, wireless communication / connection 150a, 150b, and 150c can transmit / receive signals via various physical channels. To this end, at least some of the following can be performed based on the various proposals of this disclosure: various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), resource allocation processes, etc.

[0197] Figure 15 shows a wireless device according to one embodiment of the present disclosure.

[0198] Referring to Figure 15, the first wireless device 100 and the second wireless device 200 can transmit and receive wireless signals via various wireless connectivity technologies (e.g., LTE, NR). Here, {first wireless device 100, second wireless device 200} can correspond to {wireless device 100x, base station 200} and / or {wireless device 100x, wireless device 100x} in Figure 14.

[0199] The first wireless device 100 includes one or more processors 102 and one or more memories 104, and may further include one or more transceivers 106 and / or one or more antennas 108. The processor 102 may control the memories 104 and / or the transceivers 106 and be configured to embody the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. For example, the processor 102 may process information in the memory 104 to generate a first information / signal, and then transmit a wireless signal containing the first information / signal via the transceiver 106. Alternatively, the processor 102 may receive a wireless signal containing a second information / signal via the transceiver 106, and then store information obtained from signal processing of the second information / signal in the memory 104. The memory 104 may be linked to the processor 102 and may store various information related to the operation of the processor 102. For example, memory 104 may store software code that includes instructions for executing some or all of the processes controlled by processor 102, or for executing the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. Here, processor 102 and memory 104 are part of a communication modem / circuit / chip designed to embody wireless communication technology (e.g., LTE, NR). Transceiver 106 may be coupled with processor 102 and may transmit and / or receive radio signals via one or more antennas 108. Transceiver 106 may include a transmitter and / or receiver. Transceiver 106 may be used in combination with an RF (Radio Frequency) unit. In this disclosure, wireless equipment may also mean a communication modem / circuit / chip.

[0200] The second wireless device 200 includes one or more processors 202, one or more memories 204, and may further include one or more transceivers 206 and / or one or more antennas 208. The processor 202 may control the memories 204 and / or the transceivers 206 and be configured to embody the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. For example, the processor 202 may process information in the memory 204 to generate a third information / signal, and then transmit a wireless signal containing the third information / signal via the transceiver 206. Alternatively, the processor 202 may receive a wireless signal containing a fourth information / signal via the transceiver 206, and then store the information obtained from signal processing of the fourth information / signal in the memory 204. The memory 204 may be linked to the processor 202 and may store various information related to the operation of the processor 202. For example, memory 204 may store software code containing instructions for executing some or all of the processes controlled by processor 202, or for executing the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. Here, processor 202 and memory 204 are part of a communication modem / circuit / chip designed to embody wireless communication technology (e.g., LTE, NR). Transceiver 206 may be coupled with processor 202 and may transmit and / or receive radio signals via one or more antennas 208. Transceiver 206 may include a transmitter and / or receiver and may be used in combination with an RF unit. In this disclosure, wireless equipment may also mean a communication modem / circuit / chip.

[0201] The hardware elements of wireless devices 100 and 200 will be described in more detail below. However, one or more protocol layers can be embodied by one or more processors 102 and 202. For example, one or more processors 102 and 202 can embodied one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 can generate one or more PDUs (Protocol Data Units) and / or one or more SDUs (Service Data Units) by means of the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in this document. One or more processors 102 and 202 can generate messages, control information, data, or information by means of the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed in this document. One or more processors 102, 202 can generate signals (e.g., baseband signals) containing PDUs, SDUs, messages, control information, data, or information by means of the functions, procedures, suggestions, and / or methods disclosed in this document and provide them to one or more transceivers 106, 206. One or more processors 102, 202 can receive signals (e.g., baseband signals) from one or more transceivers 106, 206 and acquire PDUs, SDUs, messages, control information, data, or information by means of the descriptions, functions, procedures, suggestions, methods, and / or operational flowcharts disclosed in this document.

[0202] One or more processors 102, 202 are referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102, 202 can be embodied by hardware, firmware, software, or a combination thereof. For example, one or more ASICs (Application Specific Integrated Circuits), one or more DSPs (Digital Signal Processors), one or more DSPDs (Digital Signal Processing Devices), one or more PLDs (Programmable Logic Devices), or one or more FPGAs (Field Programmable Gate Arrays) may be included in one or more processors 102, 202. The descriptions, functions, procedures, suggestions, methods, and / or operational flowcharts disclosed herein may be embodied using firmware or software, and the firmware or software may be embodied to include modules, procedures, functions, etc. The descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein may be implemented by one or more processors 102, 202, or stored in one or more memories 104, 204 and driven by one or more processors 102, 202, with firmware or software configured to execute them. The descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein may be implemented using firmware or software in the form of code, instructions and / or sets of instructions.

[0203] One or more memory units 104, 204 can be connected to one or more processors 102, 202 and can store various forms of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memory units 104, 204 can consist of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer read / store media, and / or combinations thereof. One or more memory units 104, 204 can be located inside and / or outside of one or more processors 102, 202. Furthermore, one or more memory units 104, 204 can be connected to one or more processors 102, 202 via various technologies such as wired or wireless connections.

[0204] One or more transceivers 106, 206 can transmit user data, control information, radio signals / channels, etc., as referred to in the methods and / or operational flowcharts, etc., described herein to one or more other devices. One or more transceivers 106, 206 can receive user data, control information, radio signals / channels, etc., as referred to in the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts, etc., disclosed herein from one or more other devices. For example, one or more transceivers 106, 206 can be connected to one or more processors 102, 202 to transmit and receive radio signals. For example, one or more processors 102, 202 can control one or more transceivers 106, 206 to transmit user data, control information or radio signals to one or more other devices. Also, one or more processors 102, 202 can control one or more transceivers 106, 206 to receive user data, control information or radio signals from one or more other devices. Furthermore, one or more transceivers 106, 206 can be connected to one or more antennas 108, 208 and configured to transmit and receive user data, control information, radio signals / channels, etc., as referred to in the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein, via one or more antennas 108, 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106, 206 can convert received user data, control information, radio signals / channels, etc., from RF band signals to baseband signals for processing using one or more processors 102, 202. One or more transceivers 106, 206 can convert user data, control information, radio signals / channels, etc., processed using one or more processors 102, 202, from baseband signals to RF band signals. For this purpose, one or more transceivers 106, 206 may include (analog) oscillators and / or filters.

[0205] Figure 16 shows a signal processing circuit for a transmission signal according to one embodiment of the present disclosure.

[0206] Referring to Figure 16, 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. However, it is not limited to these, and the operation / function of Figure 16 can be performed by the processors 102, 202 and / or transceivers 106, 206 of Figure 15. The hardware elements of Figure 16 can be embodied by the processors 102, 202 and / or transceivers 106, 206 of Figure 15. For example, blocks 1010-1060 can be embodied by the processors 102, 202 of Figure 15. Also, blocks 1010-1050 can be embodied by the processors 102, 202 of Figure 15, and block 1060 can be embodied by the transceivers 106, 206 of Figure 15.

[0207] The codeword can be converted into a radio signal via the signal processing circuit 1000 in Figure 16. Here, the codeword is an encoded bit sequence of information blocks. The information blocks may include transmission blocks (e.g., UL-SCH transmission block, DL-SCH transmission block). The radio signal can be transmitted via various physical channels (e.g., PUSCH, PDSCH).

[0208] Specifically, the codeword can be converted into a scrambled bit sequence by the scrambler 1010. The scrambled sequence used for scrambling is generated based on an initialization value, which may include the ID information of the radio equipment. The scrambled bit sequence can be modulated into a modulated symbol sequence by the modulator 1020. The modulation scheme can include pi / 2-BPSK (pi / 2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), m-QAM (m-Quadrature Amplitude Modulation), etc. The complex modulated symbol sequence can be mapped to one or more transmission layers by the layer mapper 1030. The modulated symbol of each transmission layer can be mapped to the corresponding antenna port (ra) by the precoder 1040 (precoding). The output z of the precoder 1040 is obtained by multiplying the output y of the layer mapper 1030 by an N*M precoding matrix W. Here, N is the number of antenna ports and M is the number of transmission layers. The precoder 1040 can perform precoding after performing transform precoding (e.g., DFT transformation) on the complex modulation symbols. Alternatively, the precoder 1040 can perform precoding without performing transform precoding.

[0209] The resource mapper 1050 can map the modulation symbols of each antenna port to a time-frequency resource. The time-frequency resource may include multiple symbols in the time domain (e.g., CP-OFDMA symbols, DFT-s-OFDMA symbols) and multiple subcarriers in the frequency domain. The signal generator 1060 generates a radio signal from the mapped modulation symbols, and the generated radio signal can be transmitted to other devices via each antenna. To this end, the signal generator 1060 may include an IFFT (Inverse Fast Fourier Transform) module, a CP (Cyclic Prefix) inserter, a DAC (Digital-to-Analog Converter), a frequency uplink converter, and the like.

[0210] In wireless equipment, the signal processing process for a received signal can be configured as the reverse of the signal processing processes 1010-1060 in Figure 16. For example, wireless equipment (e.g., 100, 200 in Figure 15) can receive wireless signals from an external source via an antenna port / transceiver. The received wireless signal can be converted into a baseband signal via a signal restorer. For this purpose, the signal restorer may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a Fast Fourier Transform (FFT) module. Subsequently, the baseband signal can be restored to a codeword through a resource demapper process, a postcoding process, a demodulation process, and a descramble process. The codeword can be decoded to restore the original information blocks. Therefore, a signal processing circuit (not shown) for a received signal may include a signal restorer, a resource demapper, a postcoder, a demodulator, a descrambler, and a decoder.

[0211] Figure 17 shows a wireless device according to one embodiment of the present disclosure. The wireless device can be embodied in various forms depending on the use-example / service (see Figure 14).

[0212] Referring to Figure 17, the wireless devices 100 and 200 correspond to the wireless devices 100 and 200 in Figure 15 and can be composed of various elements, components, units, and / or modules. For example, the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and an additional element 140. The communication unit may include a communication circuit 112 and transceivers (etc.) 114. For example, the communication circuit 112 may include one or more processors 102, 202 and / or one or more memories 104, 204 in Figure 15. For example, the transceivers (etc.) 114 may include one or more transceivers 106, 206 and / or one or more antennas 108, 208 in Figure 15. The control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional element 140 and controls the various operations 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 / instructions / information stored in the memory unit 130. The control unit 120 can also transmit the information stored in the memory unit 130 to an external device (e.g., another communication device) via a wireless / wired interface through the communication unit 110, or store information received from an external device (e.g., another communication device) via a wireless / wired interface through the communication unit 110 in the memory unit 130.

[0213] Additional element 140 can be configured in various ways depending on the type of wireless device. For example, additional element 140 may include at least one of the following: a power unit / battery, an input / output unit (I / O unit), a drive unit, and a computing unit. However, wireless devices can be embodied in forms such as robots (100a in Figure 14), vehicles (100b-1, 100b-2 in Figure 14), XR devices (100c in Figure 14), mobile devices (100d in Figure 14), home appliances (100e in Figure 14), IoT devices (100f in Figure 14), digital broadcasting terminals, hologram devices, public safety devices, MTC devices, medical devices, fintech devices (or financial devices), security devices, climate / environmental devices, AI servers / devices (400 in Figure 147), base stations (200 in Figure 14), and network nodes. Depending on the use-example / service, wireless devices may be mobile or used in a fixed location.

[0214] In Figure 17, the various elements, components, units / parts, and / or modules within the wireless devices 100 and 200 can be interconnected as a whole via a wired interface, or at least some of them can be connected wirelessly via the communication unit 110. For example, within the wireless devices 100 and 200, the control unit 120 and the communication unit 110 can be connected via a wired interface, and the control unit 120 and the first units (e.g., 130, 140) can be connected wirelessly via the communication unit 110. Furthermore, each element, component, unit / part, and / or module within the wireless devices 100 and 200 may further include one or more elements. For example, the control unit 120 may consist of a collection of one or more processors. For example, the control unit 120 may consist of a collection of a communication control processor, an application processor, an ECU (Electronic Control Unit), a graphics processing processor, a memory control processor, and so on. As another example, the memory unit 130 may consist of RAM (Random Access Memory), DRAM (Dynamic RAM), ROM (Read Only Memory), flash memory, volatile memory, non-volatile memory, and / or a combination thereof.

[0215] The following provides a more detailed explanation of the example shown in Figure 17, with reference to other drawings.

[0216] Figure 18 shows a portable device according to one embodiment of the present disclosure. The portable device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch, smart glasses), or a portable computer (e.g., a notebook). The portable device is referred to as MS (Mobile Station), UT (user terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), AMS (Advanced Mobile Station), or WT (Wireless terminal).

[0217] Referring to Figure 18, the portable device 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a memory unit 130, a power supply unit 140a, an interface unit 140b, and an input / output unit 140c. The antenna unit 108 may be composed of a part of the communication unit 110. Blocks 110-130 / 140a-140c correspond to blocks 110-130 / 140 in Figure 17, respectively.

[0218] The communication unit 110 can send and receive signals (e.g., data, control signals, etc.) with other wireless devices and base stations. The control unit 120 can control the components of the portable device 100 and perform various operations. The control unit 120 may include an AP (Application Processor). The memory unit 130 can store data / parameters / programs / code / instructions necessary to operate the portable device 100. The memory unit 130 can also store input / output data / information, etc. The power supply unit 140a supplies power to the portable device 100 and may include wired / wireless charging circuits, batteries, etc. The interface unit 140b can support the connection of the portable device 100 with other external devices. The interface unit 140b may include various ports for connection with external devices (e.g., audio input / output ports, video input / output ports). The input / output unit 140c can receive and output video information / signals, audio information / signals, data, and / or information input from the user. The input / output section 140c may include a camera, microphone, user input section, display section 140d, speaker and / or haptic module, etc.

[0219] For example, in the case of data communication, the input / output unit 140c acquires information / signals input from the user (e.g., touch, text, voice, image, video), and the acquired information / signals can be stored in the memory unit 130. The communication unit 110 converts the information / signals stored in memory into a radio signal and can transmit the converted radio signal directly to other radio devices or to a base station. Furthermore, after receiving a radio signal from another radio device or base station, the communication unit 110 can restore the received radio signal to its original information / signal. The restored information / signal is stored in the memory unit 130 and can then be output via the input / output unit 140c in various forms (e.g., text, voice, image, video, haptic).

[0220] Figure 19 shows a vehicle or autonomous vehicle according to one embodiment of the present disclosure. The vehicle or autonomous vehicle can be embodied in mobile robots, cars, trains, manned / unmanned aerial vehicles (AVs), ships, etc.

[0221] Referring to Figure 19, 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 composed of part of the communication unit 110. Blocks 110 / 130 / 140a to 140d correspond to blocks 110 / 130 / 140 in Figure 17, respectively.

[0222] The communication unit 110 can send and receive signals (e.g., data, control signals, etc.) with external devices such as other vehicles, base stations (e.g., base stations, roadside units, etc.), and servers. The control unit 120 can control elements of the vehicle or autonomous vehicle 100 and perform various operations. The control unit 120 may include an ECU (Electronic Control Unit). The drive unit 140a can make the vehicle or autonomous vehicle 100 travel on the ground. The drive unit 140a may include an engine, motor, powertrain, wheels, brakes, steering system, etc. The power supply unit 140b supplies power to the vehicle or autonomous vehicle 100 and may include a wired / wireless charging circuit, battery, etc. The sensor unit 140c can obtain vehicle status, surrounding environment information, user information, etc. The sensor unit 140c may include an IMU (inertial measurement unit) sensor, collision sensor, wheel sensor, speed sensor, tilt sensor, weight detection sensor, heading sensor, position module, vehicle forward / reverse sensor, battery sensor, fuel sensor, tire sensor, steering sensor, temperature sensor, humidity sensor, ultrasonic sensor, illuminance sensor, pedal position sensor, etc. The autonomous driving unit 140d can implement technologies such as maintaining a lane while driving, automatically adjusting speed like adaptive cruise control, automatically driving along a predetermined route, and automatically setting a route and driving when a destination is set.

[0223] For example, the communication unit 110 can receive map data, traffic information data, etc., from an external server. The autonomous driving unit 140d can generate an autonomous driving route and driving plan based on the acquired data. The control unit 120 can control the drive unit 140a so that the vehicle or autonomous vehicle 100 moves along the autonomous driving route according to the driving plan (e.g., speed / direction adjustment). During autonomous driving, the communication unit 110 can acquire the latest traffic information data from the external server non-periodically and acquire surrounding traffic information data from surrounding vehicles. Also, during autonomous driving, the sensor unit 140c can acquire vehicle status and surrounding environment information. The autonomous driving unit 140d can update the autonomous driving route and driving plan based on the newly acquired data / information. The communication unit 110 can transmit information such as vehicle position, autonomous driving route, and driving plan to the external server. The external server can predict traffic information data in advance using AI technology, etc., based on the information collected from the vehicle or autonomous vehicle, and can provide the predicted traffic information data to the vehicle or autonomous vehicle.

[0224] The claims described herein can be combined in various ways. For example, the technical features of the method claims herein can be combined and embodied in an apparatus, and the technical features of the apparatus claims herein can be combined and embodied in a method. Furthermore, the technical features of the method claims and the technical features of the apparatus claims herein can be combined and embodied in an apparatus, and the technical features of the method claims and the technical features of the apparatus claims herein can be combined and embodied in a method.

Claims

1. A first device triggers a resource selection procedure for NR (new radio) SL (sidelink) transmission, The first device includes the step of determining a candidate set of resources for the resource selection procedure, Based on the fact that the priority of LTE (long term evolution) SL transmission is higher than the priority of NR SL transmission, the first device acquires the remaining candidate resource set by excluding at least one first NR SL candidate resource in an NR SL slot that overlaps with the time when LTE SL transmission is scheduled from the candidate resource set. (i) The first device is not monitoring the LTE subframe, and (ii) the virtual LTE SCI is received within the LTE subframe at an arbitrary periodicity based on the LTE resource reservation period, and the first device obtains the remaining candidate resource set by excluding from the candidate resource set at least one second NR SL candidate resource in the NR SL slot that overlaps with an LTE subframe determined based on an arbitrary periodicity based on the LTE resource reservation period related to the virtual LTE SCI within the LTE subframe; A method comprising the step of the first apparatus selecting a transmit resource from the remaining set of candidate resources, excluding the at least one first NR SL candidate resource and the at least one second NR SL candidate resource.

2. The method according to claim 1, wherein an integer M1 of resources, including at least one NR SL candidate resource adjacent to the time point at which the LTE SL transmission is scheduled and the frequency at which the LTE SL transmission is scheduled, is excluded from the candidate resource set.

3. The first device comprises the steps of obtaining the LTE SL SCS (subcarrier spacing) related to the LTE SL transmission, The first device acquires the NR SL SCS related to the NR SL transmission, The first apparatus includes the steps of generating an LTE SL bin based on the LTE SL SCS, The first apparatus includes the steps of generating an NR SL bin based on the NR SL SCS, The first apparatus further includes the step of determining the M1 resources based on the LTE SL bin and the NR SL bin, The method according to claim 2, wherein, based on the overlap between the LTE SL bin and the NR SL bin, at least one resource associated with the LTE SL bin is included in the M1 resources.

4. An integer N1 resources, including at least one NR SL candidate resource, that are adjacent to the time point in time when the LTE SL transmission is scheduled, are excluded from the candidate resource set. The N1 resources include N2 integer resources that precede the time when the LTE SL transmission is scheduled, and N3 integer resources that follow the time when the LTE SL transmission is scheduled. The method according to claim 2, wherein the N1 is the sum of the N2 and N3.

5. The method according to claim 4, wherein the two Ns are set for each SCS associated with the NR SL transmission.

6. The method according to claim 4, wherein the two Ns and the three Ns are different.

7. The M1 resource includes two integer resources having a frequency higher than the frequency at which the LTE SL transmission is scheduled, and three integer resources having a frequency lower than the frequency at which the LTE SL transmission is scheduled. The method according to claim 2, wherein the aforementioned M1 is the sum of the aforementioned M2 and M3.

8. The method according to claim 7, wherein the two Ms and the three Ms are different.

9. The first device, At least one transceiver and a receiver, At least one processor, The system comprises at least one memory connected to the at least one processor and storing instructions, Based on the fact that the instruction is executed by at least one processor, the first device, Triggering the resource selection procedure for NR (new radio) SL (sidelink) transmission, Determining a candidate set of resources for the aforementioned resource selection procedure, Based on the fact that the priority of LTE (long term evolution) SL transmission is higher than the priority of NR SL transmission, the remaining candidate resource set is obtained by excluding at least one first NR SL candidate resource in the NR SL slot that overlaps with the time when the LTE SL transmission is scheduled from the candidate resource set. (i) The first device is not monitoring the LTE subframe, and (ii) the virtual LTE SCI is received within the LTE subframe at an arbitrary periodicity based on the LTE resource reservation period, and the first device acquires the remaining candidate resource set by excluding from the candidate resource set at least one second NR SL candidate resource in the NR SL slot that overlaps with the LTE subframe determined based on an arbitrary periodicity based on the LTE resource reservation period related to the virtual LTE SCI within the LTE subframe; A first device that causes an operation to be performed which includes selecting a transmit resource from the remaining set of candidate resources, excluding the at least one first NR SL candidate resource and the at least one second NR SL candidate resource.

10. Processing apparatus, At least one processor, The system comprises at least one memory connected to the at least one processor and storing instructions, Based on the fact that the instruction is executed by at least one processor, the first device, Triggering the resource selection procedure for NR (new radio) SL (sidelink) transmission, Determining a candidate set of resources for the aforementioned resource selection procedure, Based on the fact that the priority of LTE (long term evolution) SL transmission is higher than the priority of NR SL transmission, the remaining candidate resource set is obtained by excluding at least one first NR SL candidate resource in the NR SL slot that overlaps with the time when the LTE SL transmission is scheduled from the candidate resource set. (i) The first device is not monitoring the LTE subframe, and (ii) the virtual LTE SCI is received within the LTE subframe at an arbitrary periodicity based on the LTE resource reservation period, and the first device acquires the remaining candidate resource set by excluding from the candidate resource set at least one second NR SL candidate resource in the NR SL slot that overlaps with the LTE subframe determined based on an arbitrary periodicity based on the LTE resource reservation period related to the virtual LTE SCI within the LTE subframe; A processing device that performs an operation including selecting a transmit resource from the remaining set of candidate resources, excluding the at least one first NR SL candidate resource and the at least one second NR SL candidate resource.

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