Method and device for executing positioning based on resource pool

Abstract

A method in which a first device performs wireless communication and a device supporting the same are provided. The method may comprise the following steps: acquiring configuration information related to a dedicated resource pool; obtaining configuration information related to the shared resource pool; measuring a sidelink (SL) received signal strength indicator (RSSI) for the dedicated resource pool or the shared resource pool on a channel busy rate (CBR) measurement window; acquiring the SL CBR based on the measurement; selecting a shared resource pool based on the SL CBR; and performing SL positioning reference signal (PRS) transmission within the shared resource pool.

Description

Technical Field

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

[0002] Sidelink (SL) refers to a communication method that configures a direct link between user equipment (UE) and directly exchanges voice or data between user equipment without going through a base station (BS). SL is being considered as a solution to the burden on base stations caused by the rapid increase in data traffic. V2X (Vehicle to Everything) refers to a communication technology that exchanges information with other vehicles, pedestrians, and objects equipped with infrastructure through wired / 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 through the PC5 interface and / or the Uu interface.

[0003] Furthermore, as more and more communication devices require greater communication capacity, demand is rising for mobile broadband communications that are enhanced compared to conventional radio access technologies (RATs). Consequently, discussions are underway regarding reliability and latency-sensitive services or communication systems for user equipment (UE). Furthermore, next-generation radio access technologies based on improved mobile broadband communications, massive machine-type communications (MTC), and ultra-reliable low-latency communications (URLLC) are referred to as new radio access technologies (RATs) or new radio (NR). Summary of the Invention

[0004] Technical Solution

[0005] In an embodiment, a method for performing wireless communication by a first device is provided. The method may include: obtaining configuration information related to a dedicated resource pool; obtaining configuration information related to a public resource pool; measuring a side link (SL) received signal strength indicator (RSSI) for the dedicated resource pool or the public resource pool over a channel busy rate (CBR) measurement window; obtaining an SL CBR based on the measurement; selecting a public resource pool based on the SL CBR; and performing SL positioning reference signal (PRS) transmission in the public resource pool.

[0006] In an embodiment, a first device adapted to perform wireless communication is provided. The first device may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions, wherein the instructions, upon being executed by the at least one processor, cause the first device to perform operations, the operations including: obtaining configuration information related to a dedicated resource pool; obtaining configuration information related to a public resource pool; measuring a side link (SL) received signal strength indicator (RSSI) for the dedicated resource pool or the public resource pool over a channel busy rate (CBR) measurement window; obtaining an SL CBR based on the measurement; selecting a public resource pool based on the SL CBR; and performing SL positioning reference signal (PRS) transmission within the public resource pool.

[0007] In an embodiment, a processing device adapted to control a first device is provided. The processing device may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions, wherein the instructions, upon being executed by the at least one processor, cause the first device to perform operations, the operations including: obtaining configuration information related to a dedicated resource pool; obtaining configuration information related to a public resource pool; measuring a side link (SL) received signal strength indicator (RSSI) for the dedicated resource pool or the public resource pool over a channel busy rate (CBR) measurement window; obtaining an SL CBR based on the measurement; selecting a public resource pool based on the SL CBR; and performing SL positioning reference signal (PRS) transmission within the public resource pool.

[0008] In an embodiment, a non-transitory computer-readable storage medium storing instructions is provided. When executed, the instructions may cause a first apparatus to perform operations including: obtaining configuration information related to a dedicated resource pool; obtaining configuration information related to a public resource pool; measuring a sidelink (SL) received signal strength indicator (RSSI) for the dedicated resource pool or the public resource pool over a channel busy rate (CBR) measurement window; obtaining an SL CBR based on the measurement; selecting a public resource pool based on the SLCBR; and transmitting an SL positioning reference signal (PRS) within the public resource pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The following illustrates a communication structure that may be provided in a 6G system according to an embodiment of the present disclosure.

[0010] Figure 2 The electromagnetic spectrum according to an embodiment of the present disclosure is shown.

[0011] Figure 3 The structure of the NR system based on the embodiment of the present disclosure is shown.

[0012] Figure 4A radio protocol architecture according to an embodiment of the present disclosure is shown.

[0013] Figure 5 The structure of the NR radio frame according to the embodiment of the present disclosure is shown.

[0014] Figure 6 The structure of the time slot of the NR frame based on the embodiment of the present disclosure is shown.

[0015] Figure 7 An example of a BWP according to an embodiment of the present disclosure is shown.

[0016] Figure 8 A process of performing V2X or SL communication by a UE based on a transmission mode according to an embodiment of the present disclosure is shown.

[0017] Figure 9 An example of the architecture of a 5G system capable of locating a UE that has access rights to a next-generation radio access network (NG-RAN) or E-UTRAN based on an embodiment of the present disclosure is shown.

[0018] Figure 10 An example of implementing a network for measuring the location of a UE based on an embodiment of the present disclosure is shown.

[0019] Figure 11 An example of protocol layers used to support LTE Positioning Protocol (LPP) message transmission between an LMF and a UE according to an embodiment of the present disclosure is shown.

[0020] Figure 12 An example of protocol layers used to support NR Positioning Protocol A (NRPPa) PDU transmission between LMF and NG-RAN nodes based on an embodiment of the present disclosure is shown.

[0021] Figure 13 is a diagram for explaining an OTDOA positioning method according to an embodiment of the present disclosure.

[0022] Figure 14 A two-sided RTT according to an embodiment of the present disclosure is shown.

[0023] Figure 15 The process of a UE selecting a dedicated resource pool or a public resource pool and performing positioning according to an embodiment of the present disclosure is shown.

[0024] Figure 16 A method for a first device to perform wireless communication according to an embodiment of the present disclosure is shown.

[0025] Figure 17 A method for a second device to perform wireless communication according to an embodiment of the present disclosure is shown.

[0026] Figure 18 A communication system 1 according to an embodiment of the present disclosure is shown.

[0027] Figure 19 A wireless device according to an embodiment of the present disclosure is shown.

[0028] Figure 20 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown.

[0029] Figure 21 Another example of a wireless device according to an embodiment of the present disclosure is shown.

[0030] Figure 22 A handheld device according to an embodiment of the present disclosure is shown.

[0031] Figure 23 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0032] In the present disclosure, "A or B" may mean "only A", "only B", or "both A and B". In other words, in the present disclosure, "A or B" may be interpreted as "A and / or B". For example, in the present disclosure, "A, B or C" may mean "only A", "only B", "only C", or "any combination of A, B, and C".

[0033] As used in this disclosure, a slash ( / ) or a comma may mean "and / or." For example, "A / B" may mean "A and / or B." Thus, "A / B" may mean "only A," "only B," or "both A and B." For example, "A, B, C" may mean "A, B, or C."

[0034] In the present disclosure, “at least one of A and B” may mean “only A”, “only B”, or “both A and B”. In addition, in the present disclosure, the expression “at least one of A or B” or “at least one of A and / or B” may be interpreted as “at least one of A and B”.

[0035] In addition, in the present disclosure, “at least one of A, B, and C” may mean “only A,” “only B,” “only C,” or “any combination of A, B, and C.” In addition, “at least one of A, B, or C” or “at least one of A, B, and / or C” may mean “at least one of A, B, and C.”

[0036] In addition, the brackets used in the present disclosure may mean "for example". Specifically, when it is indicated as "control information (PDCCH)", this may mean that "PDCCH" is proposed as an example of "control information". In other words, the "control information" of the present disclosure is not limited to "PDCCH", and "PDDCH" may be proposed as an example of "control information". Specifically, when it is indicated as "control information (i.e., PDCCH)", this may also mean that "PDCCH" is proposed as an example of "control information".

[0037] In the following description, “when, if, or in the event of” may be replaced with “based on”.

[0038] The technical features respectively described in one drawing in the present disclosure may be implemented separately or may be implemented simultaneously.

[0039] In the present disclosure, a high-layer parameter may be a parameter configured, preconfigured, or predefined for a UE. For example, a base station or a network may send the high-layer parameter to the UE. For example, the high-layer parameter may be sent via radio resource control (RRC) signaling or medium access control (MAC) signaling.

[0040] The techniques described below can be used in various wireless communication systems such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. CDMA can be implemented using radio technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA-2000. TDMA can be implemented using radio technologies such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA can be implemented using radio technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Evolved UTRA (E-UTRA), etc. IEEE 802.16m is an evolved version of IEEE 802.16e and provides backward compatibility for systems based on IEEE 802.16e. UTRA is part of the Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is part of Evolved UMTS (E-UMTS) that uses E-UTRA. 3GPP LTE uses OFDMA in the downlink and SC-FDMA in the uplink. LTE-Advanced (LTE-A) is an evolution of LTE.

[0041] 5G NR is a successor technology to LTE-A, a new mobile communication system with high performance, low latency, and high availability. 5G NR can use all available spectrum resources, including low-frequency bands below 1 GHz, intermediate frequency bands from 1 GHz to 10 GHz, and high-frequency bands (millimeter waves) above 24 GHz.

[0042] The 6G (wireless communication) system has objectives such as (i) very high data rates per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) reduced energy consumption of battery-less IoT devices, (vi) ultra-reliable connectivity, and (vii) networked intelligence with machine learning capabilities. The vision of the 6G system may include four aspects such as intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity, and the 6G system may meet the requirements shown in Table 1 below. That is, Table 1 shows the requirements of the 6G system.

[0043] [Table 1]

[0044] Peak data rate per device 1Tbps E2E latency 1ms Maximum spectral efficiency 100bps / Hz Mobility support Up to 1000km / h Satellite Integration completely AI completely autonomous vehicles completely XR completely Tactile communication completely

[0045] The 6G system may have key factors such as enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), massive machine type communications (mMTC), AI-integrated communications, tactile Internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion, and enhanced data security.

[0046] Figure 1 The following illustrates a communication structure that may be provided in a 6G system according to an embodiment of the present disclosure. Figure 1 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0047] The 6G system will have 50 times higher simultaneous wireless communication connectivity than the 5G wireless communication system. URLLC, which is the main function of 5G, will become a more important technology by providing end-to-end latency of less than 1ms in 6G communication. Unlike the frequency spectrum efficiency of frequently used domains, the 6G system can have better volume spectrum efficiency. The 6G system can provide advanced battery technology for energy harvesting and very long battery life, so mobile devices may not need to be charged separately in the 6G system. In 6G, new network characteristics may be as follows.

[0048] -Satellite-integrated network: To provide global mobile constellations, 6G will be integrated with satellites. Integrating terrestrial waves, satellites, and public networks into a wireless communication system may be very important for 6G.

[0049] -Connected Intelligence: Unlike previous generations of wireless communication systems, 6G is innovative, and wireless evolution may be updated from "connected things" to "connected intelligence." AI can be applied at every step of the communication process (or every signal processing process described below).

[0050] - Seamless integration of wireless information and energy transfer: 6G wireless networks can deliver power to charge the batteries of devices such as smartphones and sensors. Therefore, wireless information and energy transfer (WIET) will be integrated.

[0051] -Ubiquitous Hyper-3D Connectivity: Access to networks and core network functions from drones and very low Earth orbit satellites will establish hyper-3D connectivity in 6G ubiquity.

[0052] Among the new network features of 6G, several general requirements are as follows.

[0053] Small cell networks: The concept of small cell networks was introduced to improve received signal quality as a result of improvements in cellular system throughput, energy efficiency, and spectral efficiency. Therefore, small cell networks are an essential feature of 5G and beyond (5GB) communication systems. Consequently, 6G communication systems also adopt the characteristics of small cell networks.

[0054] Ultra-dense heterogeneous networks: Ultra-dense heterogeneous networks will be another important feature of 6G communication systems. Multi-tier networks composed of heterogeneous networks will improve overall QoS and reduce costs.

[0055] - High-capacity backhaul: Backhaul connectivity is characterized by a high-capacity backhaul network in order to support high-capacity traffic. High-speed optical fiber and free-space optics (FSO) systems can be possible solutions to this problem.

[0056] - Radar technology integrated with mobile technology: High-precision positioning (or location-based services) through communication is one of the functions of 6G wireless communication systems. Therefore, radar systems will be integrated with 6G networks.

[0057] -Software and virtualization: Software and virtualization are two important capabilities that are fundamental to the design process in 5G networks in order to ensure flexibility, reconfigurability, and programmability.

[0058] The following describes the core implementation technologies of the 6G system.

[0059] Artificial Intelligence (AI): AI is the most important and newly introduced technology in 6G systems. 4G systems do not include AI. 5G systems will support partial or very limited AI. However, 6G systems will support AI for full automation. Advances in machine learning will create smarter networks for real-time communications in 6G. When AI is introduced into communications, real-time data transmission can be simplified and improved. AI can use countless analyses to determine how to perform complex tasks. This means that AI can increase efficiency and reduce processing latency. Time-consuming operations such as handovers, network selection, and resource scheduling can be performed instantly using AI. AI can also play a significant role in machine-to-machine (M2M), machine-to-human, and human-to-machine communications. Furthermore, AI could enable instant communication in brain-computer interfaces (BCIs). AI-based communication systems can be supported by metamaterials, smart structures, smart networks, smart devices, intelligent cognitive radios, self-maintaining wireless networks, and machine learning.

[0060] -THz communication: Data rates can be increased by increasing bandwidth. This can be achieved by using sub-TH communication with wide bandwidth and applying advanced massive MIMO technology. THz waves are called submillimeter radiation, generally indicating a frequency band between 0.1THz and 10THz with corresponding wavelengths in the range of 0.03mm to 3mm. The band range of 100GHz to 300GHz (sub-THz band) is considered to be the main part of the THz band for cellular communications. When the sub-THz band is added to the millimeter wave band, the 6G cellular communication capacity increases. The defined THz band of 300GHz to 3THz is in the far infrared (IR) band. The band of 300GHz to 3THz is part of the optical band, but is located at the boundary of the optical band and immediately after the RF band. Therefore, the band of 300GHz to 3THz has similarities with RF. Figure 2 The electromagnetic spectrum according to an embodiment of the present disclosure is shown. Figure 2 The embodiments of the present disclosure can be combined with various embodiments of the present disclosure. The main features of THz communication include (i) a wide range of bandwidths that can be used to support very high data rates; and (ii) high path loss at high frequencies (highly directional antennas are essential). The narrow beamwidth generated in highly directional antennas reduces interference. The small wavelength of THz signals allows a larger number of antenna elements to be integrated with devices and base stations operating in this band. Therefore, advanced adaptive placement techniques that can overcome range limitations can be used.

[0061] - Massive MIMO technology (Large MIMO)

[0062] -Holographic Beamforming (HBF)

[0063] -Optical wireless technology

[0064] -Free Space Optical Backhaul Network (FSO Backhaul Network)

[0065] -Non-Terrestrial Network (NTN)

[0066] -Quantum communication

[0067] - No cellular communication

[0068] -Integration of wireless information and power transmission

[0069] -Integration of wireless communication and sensing

[0070] -Integrated access and backhaul network

[0071] -Big data analysis

[0072] -Reconfigurable smart surface

[0073] -Metaverse

[0074] -Blockchain

[0075] Unmanned Aerial Vehicles (UAVs): Unmanned aerial vehicles (UAVs), or drones, will be a key factor in 6G wireless communications. In most cases, UAV technology will be used to provide high-speed data wireless connectivity. Base stations are physically installed within the UAV to provide cellular connectivity. UAVs offer certain features not found in fixed base station infrastructure, such as ease of deployment, robust line-of-sight links, and the freedom to control mobility. During emergencies such as natural disasters, deploying terrestrial telecommunications infrastructure is economically unfeasible and sometimes unable to provide services in turbulent environments. UAVs can easily handle such situations. UAVs will become a new paradigm in wireless communications. This technology facilitates the three fundamental requirements of wireless networks, such as eMBB, URLLC, and mMTC. UAVs can also be used for a variety of purposes, such as improving network connectivity, fire detection, disaster response services, security and monitoring, pollution monitoring, parking monitoring, and accident detection. Therefore, UAV technology is recognized as one of the most important technologies for 6G communications.

[0076] -Autonomous driving (self-driving): To achieve perfect autonomous driving, it is necessary to communicate between vehicles to notify each other of dangerous situations, and to communicate between vehicles and infrastructure such as parking lots and / or traffic lights to check information such as parking information locations and signal change times. Vehicle-to-Everything (V2X) is a core element for building an autonomous driving infrastructure. It is a technology that allows vehicles to communicate and share information with various road elements, such as vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I). To maximize the performance of autonomous driving and ensure high safety, high transmission speeds and low-latency technologies are indispensable. In addition, in order to directly control vehicles in dangerous situations and actively intervene in vehicle driving beyond the level of warnings or guidance messages to the driver, due to the large amount of information to be sent and received, autonomous driving is expected to be maximized in 6G, which has faster transmission speeds and lower latency than 5G.

[0077] For the sake of clarity, the description mainly focuses on 5G NR, but the technical ideas according to the embodiments of the present disclosure are not limited thereto. Various embodiments of the present disclosure can also be applied to 6G communication systems.

[0078] Figure 3 The structure of the NR system based on the embodiment of the present disclosure is shown. Figure 3 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0079] refer to Figure 3 , the next generation radio access network (NG-RAN) may include a BS 20 that provides user plane and control plane protocol terminations for the UE 10. For example, the BS 20 may include a next generation Node B (gNB) and / or an evolved Node B (eNB). For example, the UE 10 may be fixed or mobile and may be referred to by other terms such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), a wireless device, etc. For example, the BS may be referred to as a fixed station that communicates with the UE 10 and may be referred to by other terms such as a base transceiver system (BTS), an access point (AP), etc.

[0080] Figure 3 The embodiment of the present invention illustrates a case where only gNBs are included. BSs 20 may be connected to each other via an Xn interface. BSs 20 may be connected to each other via a fifth-generation (5G) core network (5GC) and an NG interface. More specifically, BSs 20 may be connected to an access and mobility management function (AMF) 30 via an NG-C interface, and may be connected to a user plane function (UPF) 30 via an NG-U interface.

[0081] The radio interface protocol layers between the UE and the network can be categorized as Layer 1 (L1), Layer 2 (L2), and Layer 3 (L3) based on the lower three layers of the Open Systems Interconnection (OSI) model, which is well known in communication systems. The physical (PHY) layer, belonging to Layer 1, provides information transmission services using physical channels, and the radio resource control (RRC) layer, located at Layer 3, controls radio resources between the UE and the network. To this end, the RRC layer exchanges RRC messages between the UE and the base station layer.

[0082] Figure 4 A radio protocol architecture according to an embodiment of the present disclosure is shown. Figure 4 The embodiments of can be combined with various embodiments of the present disclosure. Specifically, Figure 4 (a) shows the radio protocol stack for the user plane of Uu communication, and Figure 4 (b) in FIG. 1 shows a radio protocol stack for the control plane of Uu communication. Figure 4 (c) in FIG. 1 shows a radio protocol stack for the user plane of SL communication, and Figure 4 (d) in FIG. 5 shows a radio protocol stack of a control plane for SL communication.

[0083] refer to Figure 4 The physical layer provides information transfer services to upper layers via physical channels. The physical layer is connected to the media access control (MAC) layer, which is the upper layer of the physical layer, via transport channels. Data is transferred between the MAC layer and the physical layer via transport channels. Transport channels are categorized based on how data is transmitted over the radio interface and the characteristics of the data being transmitted.

[0084] Data is transmitted between different physical layers (ie, a PHY layer of a transmitter and a PHY layer of a receiver) through a physical channel. The physical channel may be modulated using an Orthogonal Frequency Division Multiplexing (OFDM) scheme and uses time and frequency as radio resources.

[0085] The MAC layer provides services to the Radio Link Control (RLC) layer, a higher layer above the MAC layer, via logical channels. The MAC layer maps multiple logical channels to multiple transport channels. The MAC layer also provides logical channel multiplexing by mapping multiple logical channels to a single transport channel. The MAC layer provides data transmission services via logical channels.

[0086] The RLC layer performs concatenation, segmentation, and reassembly of radio link control service data units (RLC SDUs). To ensure the different quality of service (QoS) required for radio bearers (RBs), the RLC layer provides three types of operation modes: transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0087] The Radio Resource Control (RRC) layer is defined only in the control plane. The RRC layer controls logical channels, transport channels, and physical channels associated with the configuration, reconfiguration, and release of resource allocation (RBs). RBs are logical paths for data transfer between the UE and the network, provided by Layer 1 (i.e., the physical or PHY layer) and Layer 2 (i.e., the MAC layer, RLC layer, Packet Data Convergence Protocol (PDCP), and Service Data Adaptation Protocol (SDAP) layers).

[0088] The functions of the Packet Data Convergence Protocol (PDCP) in the user plane include transmission of user data, header compression and encryption. The functions of the Packet Data Convergence Protocol (PDCP) in the control plane include transmission and encryption / integrity protection of control plane data.

[0089] The Service Data Adaptation Protocol (SDAP) layer is defined only in the user plane. The SDAP layer performs mapping between Quality of Service (QoS) flows and Data Radio Bearers (DRBs) and QoS Flow ID (QFI) marking in both DL and UL packets.

[0090] RB configuration refers to the process of specifying radio protocol layers and channel attributes to provide a specific service and determining corresponding detailed parameters and operation methods. RBs can be classified into two types: signaling radio bearers (SRBs) and data radio bearers (DRBs). SRBs are used as a path for transmitting RRC messages in the control plane, and DRBs are used as a path for transmitting user data in the user plane.

[0091] When an RRC connection is established between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in the RRC connected (RRC_CONNECTED) state, otherwise the UE may be in the RRC idle (RRC_IDLE) state. In the case of NR, an RRC inactive (RRC_INACTIVE) state is additionally defined, and the UE in the RRC_INACTIVE state may maintain its connection with the core network while releasing its connection with the BS.

[0092] Data is sent from the network to the UE via a downlink transport channel. Examples of downlink transport channels include a broadcast channel (BCH) for transmitting system information and a downlink shared channel (SCH) for transmitting other user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services may be sent via the downlink SCH or may be sent via a separate downlink multicast channel (MCH). In addition, uplink transport channels for sending (or transmitting) data from the UE to the network include a random access channel (RACH) for sending initial control messages and an uplink shared channel (SCH) for sending other user traffic or control messages.

[0093] Examples of logical channels belonging to a higher layer of a transport channel and mapped to a transport channel may include a broadcast control channel (BCCH), a paging control channel (PCCH), a common control channel (CCCH), a multicast control channel (MCCH), a multicast traffic channel (MTCH), etc.

[0094] Figure 5 The structure of a NR radio frame according to an embodiment of the present disclosure is shown. Figure 5 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0095] refer to Figure 5 In NR, a radio frame can be used to perform uplink and downlink transmissions. The length of a radio frame is 10ms and can be defined as consisting of two half frames (HF). A half frame can include five 1ms subframes (SF). A subframe (SF) can be divided into one or more time slots, and the number of time slots within a subframe can be determined according to the subcarrier spacing (SCS). Each time slot can include 12 or 14 OFDM (A) symbols depending on the cyclic prefix (CP).

[0096] When using a normal CP, each time slot can include 14 symbols. When using an extended CP, each time slot can include 12 symbols. Herein, a symbol may include an OFDM symbol (or a CP-OFDM symbol) and a single carrier-FDMA (SC-FDMA) symbol (or a discrete Fourier transform spread OFDM (DFT-s-OFDM) symbol).

[0097] Table 2 shown below shows the number of symbols (N) per slot based on the SCS configuration (μ) in the case of using a normal CP or an extended CP. slot symb ), the number of time slots per frame (N frame,μ slot ) and the number of time slots per subframe (N subframe ,μ slot ).

[0098] [Table 2]

[0099]

[0100] In the NR system, OFDM(A) parameter sets (e.g., SCS, CP length, etc.) may be configured differently between multiple cells integrated into one UE. Therefore, the (absolute time) duration (or interval) of a time resource (e.g., subframe, time slot, or TTI) (collectively referred to as a time unit (TU) for simplicity) consisting of the same number of symbols may be configured differently in the integrated cells.

[0101] In NR, multiple parameter sets or SCSs can be supported to support various 5G services. For example, with an SCS of 15kHz, a wide range of traditional cellular frequency bands can be supported, and with an SCS of 30kHz / 60kHz, dense urban areas, lower latency, and wider carrier bandwidths can be supported. With an SCS of 60kHz or higher, bandwidths greater than 24.25GHz can be used to overcome phase noise.

[0102] The NR frequency band can be defined as two different types of frequency ranges. The two different types of frequency ranges may be FR1 and FR2. The values of the frequency ranges may be changed (or varied), for example, the two different types of frequency ranges may be as shown in Table 3 below. Among the frequency ranges used in the NR system, FR1 may mean "a range below 6 GHz", and FR2 may mean "a range above 6 GHz", and may also be referred to as millimeter wave (mmW).

[0103] [Table 3]

[0104] Frequency range specification Corresponding frequency range Subcarrier spacing (SCS) FR1 450MHz–6000MHz 15, 30, 60kHz FR2 24250MHz–52600MHz 60, 120, 240kHz

[0105] As described above, the value of the frequency range in the NR system can be changed (or varied). For example, as shown in Table 4 below, FR1 may include a bandwidth in the range of 410 MHz to 7125 MHz. More specifically, FR1 may include frequency bands of 6 GHz (or 5850, 5900, 5925 MHz, etc.) and higher. For example, the frequency bands of 6 GHz (or 5850, 5900, 5925 MHz, etc.) and higher included in FR1 may include unlicensed bands. The unlicensed bands may be used for various purposes, for example, the unlicensed bands are used for vehicle-specific communications (e.g., autonomous driving).

[0106] [Table 4]

[0107] Frequency range specification Corresponding frequency range Subcarrier spacing (SCS) FR1 410MHz–7125MHz 15, 30, 60kHz FR2 24250MHz–52600MHz 60, 120, 240kHz

[0108] Figure 6The structure of the time slot of the NR frame according to an embodiment of the present disclosure is shown. Figure 6 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0109] refer to Figure 6 A slot includes multiple symbols in the time domain. For example, in the case of normal CP, one slot may include 14 symbols. For example, in the case of extended CP, one slot may include 12 symbols. Alternatively, in the case of normal CP, one slot may include 7 symbols. However, in the case of extended CP, one slot may include 6 symbols.

[0110] A carrier includes multiple subcarriers in the frequency domain. A resource block (RB) can be defined as multiple consecutive subcarriers in the frequency domain (e.g., 12 subcarriers). A bandwidth part (BWP) can be defined as multiple consecutive (physical) resource blocks ((P)RBs) in the frequency domain, and a BWP can correspond to a parameter set (e.g., SCS, CP length, etc.). A carrier can include up to N BWPs (e.g., 5 BWPs). Data communication can be performed via activated BWPs. Each element can be referred to as a resource element (RE) in a resource grid, and a complex symbol can be mapped to each element.

[0111] Hereinafter, the bandwidth part (BWP) and the carrier will be described in detail.

[0112] A BWP may be a contiguous set of physical resource blocks (PRBs) within a given parameter set. A PRB may be selected from a contiguous set of common resource blocks (CRBs) for a given parameter set on a given carrier.

[0113] For example, the BWP may be at least one of an active BWP, an initial BWP, and / or a default BWP. For example, the UE may not monitor the downlink radio link quality in DL BWPs other than the activated DL BWP on the primary cell (PCell). For example, the UE may not receive the PDCCH, physical downlink shared channel (PDSCH), or channel state information-reference signal (CSI-RS) (excluding RRM) outside the activated DL BWP. For example, the UE may not trigger channel state information (CSI) reporting for inactive DL BWPs. For example, the UE may not transmit the physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH) outside the activated UL BWP. For example, in the downlink, the initial BWP may be given as a set of contiguous RBs for the remaining minimum system information (RMSI) control resource set (CORESET) (configured by the physical broadcast channel (PBCH)). For example, in the uplink, the initial BWP may be given by the system information block (SIB) for the random access procedure. For example, the default BWP may be configured by higher layers. For example, the initial value of the default BWP may be the initial DL BWP.For power saving, if the UE cannot detect downlink control information (DCI) during a designated period, the UE may switch the UE's active BWP to the default BWP.

[0114] In addition, a BWP can be defined for SL. The same SL BWP can be used in transmission and reception. For example, a transmitting UE can send a SL channel or SL signal on a specific BWP, and a receiving UE can receive a SL channel or SL signal on a specific BWP. In a licensed carrier, the SL BWP can be defined separately from the Uu BWP, and the SL BWP can have configuration signaling separate from the Uu BWP. For example, the UE can receive a configuration for the SL BWP from the BS / network. For example, the UE can receive a configuration for the Uu BWP from the BS / network. The SLBWP is (pre-)configured in the carrier for out-of-coverage NR V2X UEs and RRC_IDLE UEs. For a UE in RRC_CONNECTED mode, at least one SL BWP can be activated in the carrier.

[0115] Figure 7 An example of a BWP according to an embodiment of the present disclosure is shown. Figure 7 The embodiments of can be combined with various embodiments of the present disclosure. Figure 7 In the embodiment of the present invention, the number of BWPs is 3.

[0116] refer to Figure 7, Common Resource Blocks (CRBs) may be carrier resource blocks numbered from one end of the carrier frequency band to the other. Additionally, PRBs may be resource blocks numbered within each BWP. Point A may indicate a common reference point for the resource block grid.

[0117] It can be obtained by point A, the offset relative to point A (N start BWP ) and bandwidth (N size BWP ) to configure the BWP. For example, point A can be an external reference point of the PRBs of a carrier, and subcarrier 0 of all parameter sets (e.g., all parameter sets supported by the network on the corresponding carrier) is aligned in point A. For example, the offset can be the PRB distance between the lowest subcarrier in a given parameter set and point A. For example, the bandwidth can be the number of PRBs in a given parameter set.

[0118] Hereinafter, V2X or SL communication will be described.

[0119] The side link synchronization signal (SLSS) may include a primary side link synchronization signal (PSSS) and a secondary side link synchronization signal (SSSS) as SL specific sequences. The PSSS may be referred to as a side link primary synchronization signal (S-PSS), and the SSSS may be referred to as a side link secondary synchronization signal (S-SSS). For example, an M sequence of length 127 may be used for the S-PSS, and a Gold sequence of length 127 may be used for the S-SSS. For example, the UE may use the S-PSS for initial signal detection and synchronization acquisition. For example, the UE may use the S-PSS and the S-SSS for acquisition of detailed synchronization and for detection of a synchronization signal ID.

[0120] The physical sidelink broadcast channel (PSBCH) can be a (broadcast) channel for transmitting default (system) information, which must be known by the UE before SL signal transmission / reception. For example, the default information can be information related to SLSS, duplex mode (DM), time division duplex (TDD) uplink / downlink (UL / DL) configuration, information related to resource pool, type of application related to SLSS, subframe offset, broadcast information, etc. For example, in order to evaluate PSBCH performance, in NR V2X, the payload size of PSBCH can be 56 bits, including a 24-bit cyclic redundancy check (CRC).

[0121] S-PSS, S-SSS and PSBCH can be included in a block format that supports periodic transmission (e.g., SL synchronization signal (SS) / PSBCH block, hereinafter, sidelink synchronization signal block (S-SSB)). The S-SSB can have the same parameter set (i.e., SCS and CP length) as the physical sidelink control channel (PSCCH) / physical sidelink shared channel (PSSCH) in the carrier, and the transmission bandwidth can exist within the (pre-) configured sidelink (SL) BWP. For example, the S-SSB can have a bandwidth of 11 resource blocks (SBs). For example, the PSBCH can exist across 11 RBs. In addition, the frequency position of the S-SSB can be (pre-) configured. Therefore, the UE does not have to perform hypothesis detection at the frequency to discover the S-SSB in the carrier.

[0122] Figure 8 A process of performing V2X or SL communication by a UE based on a transmission mode according to an embodiment of the present disclosure is shown. Figure 8 The embodiments of the present disclosure may be combined with the various embodiments of the present disclosure. In the various embodiments of the present disclosure, the transmission mode may be referred to as a mode or a resource allocation mode. Hereinafter, for ease of explanation, in LTE, the transmission mode may be referred to as the LTE transmission mode. In NR, the transmission mode may be referred to as the NR resource allocation mode.

[0123] For example, Figure 8 (a) in FIG. 1 shows UE operations related to LTE transmission mode 1 or LTE transmission mode 3. Alternatively, for example, Figure 8 (a) in FIG. 4 shows UE operations related to NR resource allocation mode 1. For example, LTE transmission mode 1 can be applied to conventional SL communication, and LTE transmission mode 3 can be applied to V2X communication.

[0124] For example, Figure 8 (b) in FIG. 4 shows UE operations related to LTE transmission mode 2 or LTE transmission mode 4. Alternatively, for example, Figure 8 (b) in FIG. 1 shows UE operations related to NR resource allocation mode 2.

[0125] refer to Figure 8 (a), in LTE transmission mode 1, LTE transmission mode 3, or NR resource allocation mode 1, the base station may schedule SL resources to be used by the UE for SL transmission. For example, in step S800, the base station may send information related to the SL resources and / or information related to the UL resources to the first UE. For example, the UL resources may include PUCCH resources and / or PUSCH resources. For example, the UL resources may be resources used to report SL HARQ feedback to the base station.

[0126] For example, the first UE may receive information related to dynamic grant (DG) resources and / or information related to configuration grant (CG) resources from the base station. For example, the CG resources may include CG type 1 resources or CG type 2 resources. In the present disclosure, the DG resources may be resources configured / allocated to the first UE by the base station through downlink control information (DCI). In the present disclosure, the CG resources may be (periodic) resources configured / allocated to the first UE by the base station through DCI and / or RRC messages. For example, in the case of CG type 1 resources, the base station may send an RRC message including information related to the CG resources to the first UE. For example, in the case of CG type 2 resources, the base station may send an RRC message including information related to the CG resources to the first UE, and the base station may send a DCI related to the activation or release of the CG resources to the first UE.

[0127] In step S810, the first UE may send a PSCCH (e.g., sidelink control information (SCI) or first-level SCI) to the second UE based on resource scheduling. In step S820, the first UE may send a PSSCH (e.g., second-level SCI, MAC PDU, data, etc.) related to the PSCCH to the second UE. In step S830, the first UE may receive a PSFCH related to the PSCCH / PSSCH from the second UE. For example, HARQ feedback information (e.g., NACK information or ACK information) may be received from the second UE via the PSFCH. In step S840, the first UE may send / report the HARQ feedback information to the base station via the PUCCH or PUSCH. For example, the HARQ feedback information reported to the base station may be information generated by the first UE based on the HARQ feedback information received from the second UE. For example, the HARQ feedback information reported to the base station may be information generated by the first UE based on a preconfigured rule. For example, the DCI may be DCI for SL scheduling. For example, the format of DCI may be DCI format 3_0 or DCI format 3_1.

[0128] Hereinafter, an example of DCI format 3_0 will be described.

[0129] DCI format 3_0 is used for scheduling NR PSCCH and NR PSSCH in one cell.

[0130] The following information is sent via DCI format 3_0 with a CRC scrambled by the SL-RNTI or SL-CS-RNTI:

[0131] - Resource pool index - ceiling (log2I) bits, where I is the number of resource pools used for transmission as configured by the higher-layer parameter sl-TxPoolScheduling.

[0132] - Time gap - 3 bits determined by the higher layer parameter sl-DCI-ToSL-Trans

[0133] -HARQ process number - 4 bits

[0134] - New data indicator - 1 bit

[0135] - the lowest index of the subchannel allocated to the initial transmission - ceiling(log2(N SL subChannel ))Bit

[0136] -SCI format 1-A field: frequency resource assignment, time resource assignment

[0137] -PSFCH-to-HARQ feedback timing indicator -ceiling(log2N fb_timing ) bits, where N fb_timing is the number of entries in the higher layer parameter sl-PSFCH-ToPUCCH.

[0138] -PUCCH resource indicator - 3 bits

[0139] - Configuration Index - 0 bit if the UE is not configured to monitor DCI format 3_0 with CRC scrambled by SL-CS-RNTI; otherwise 3 bits. If the UE is configured to monitor DCI format 3_0 with CRC scrambled by SL-CS-RNTI, this field is reserved for DCI format 3_0 with CRC scrambled by SL-RNTI.

[0140] - Counter sidelink assignment index - 2 bits, 2 bits if the UE is configured with pdsch-HARQ-ACK-Codebook = dynamic; 2 bits if the UE is configured with pdsch-HARQ-ACK-Codebook = semi-static

[0141] - Padding bits if needed

[0142] refer to Figure 8(b) in LTE transmission mode 2, LTE transmission mode 4 or NR resource allocation mode 2, the UE may determine the SL transmission resources within the SL resources configured by the base station / network or the preconfigured SL resources. For example, the configured SL resources or the preconfigured SL resources may be a resource pool. For example, the UE may autonomously select or schedule resources for SL transmission. For example, the UE may perform SL communication by autonomously selecting resources within the configured resource pool. For example, the UE may autonomously select resources within a selection window by performing a sensing process and a resource (re)selection process. For example, sensing may be performed in units of subchannels. For example, in step S810, the first UE, which has selected resources from the resource pool by itself, may send a PSCCH (e.g., sidelink control information (SCI) or a first-level SCI) to a second UE by using the resources. In step S820, the first UE may send a PSSCH (e.g., a second-level SCI, a MAC PDU, data, etc.) related to the PSCCH to the second UE. In step S830, the first UE may receive a PSFCH related to the PSCCH / PSSCH from the second UE.

[0143] refer to Figure 8 (a) or (b), for example, the first UE may send the SCI to the second UE via the PSCCH. Alternatively, for example, the first UE may send two consecutive SCIs (e.g., level 2 SCIs) to the second UE via the PSCCH and / or PSSCH. In this case, the second UE may decode the two consecutive SCIs (e.g., level 2 SCIs) to receive the PSSCH from the first UE. In the present disclosure, the SCI sent via the PSCCH may be referred to as the first SCI, the first SCI, the first level SCI, or the first level SCI format, and the SCI sent via the PSSCH may be referred to as the second SCI, the second SCI, the second level SCI, or the second level SCI format. For example, the first level SCI format may include SCI format 1-A, and the second level SCI format may include SCI format 2-A and / or SCI format 2-B.

[0144] Hereinafter, an example of SCI format 1-A will be described.

[0145] SCI format 1-A is used for scheduling PSSCH and the second level SCI on PSSCH.

[0146] The following information is sent via SCI Format 1-A:

[0147] - Priority - 3 bits

[0148] - Frequency Resource Assignment - When the value of the higher layer parameter sl-MaxNumPerReserve is configured as 2, ceiling(log2(N SL subChannel (N SL subChannel +1) / 2)) bits; otherwise, when the value of the high-level parameter sl-MaxNumPerReserve is configured as 3, the ceiling log2(N SL subChannel (N SL subChannel +1)(2N SL subChannel +1) / 6) bits.

[0149] - Time resource assignment - 5 bits when the value of the higher-layer parameter sl-MaxNumPerReserve is configured as 2; otherwise, 9 bits when the value of the higher-layer parameter sl-MaxNumPerReserve is configured as 3

[0150] -Resource Reservation Period - If the higher-level parameter sl-MultiReserveResource is configured, the ceiling(log2 N rsv_period ) bits, where N rsv_period is the number of entries in the higher-level parameter sl-ResourceReservePeriodList; otherwise, 0

[0151] -DMRS pattern -ceiling(log2 N pattern ) bits, where N pattern The number of DMRS patterns configured by the higher-layer parameter sl-PSSCH-DMRS-TimePatternList

[0152] - Second level SCI format - 2 bits, as defined in Table 5

[0153] - Beta_offset indicator - 2 bits, as provided by the higher layer parameter sl-BetaOffsets2ndSCI

[0154] - Number of DMRS ports - 1 bit, as defined in Table 6

[0155] - Modulation and coding scheme - 5 bits

[0156] - Additional MCS table indicator - 1 bit if one MCS table is configured by the higher-layer parameter sl-Additional-MCS-Table; 2 bits if two MCS tables are configured by the higher-layer parameter sl-Additional-MCS-Table; otherwise, 0 bit

[0157] -PSFCH overhead indication - 1 bit if the higher layer parameter sl-PSFCH-Period = 2 or 4; otherwise, 0 bit

[0158] - Reserved bits - The number of bits determined by the higher layer parameter sl-NumReservedBits, whose value is set to zero.

[0159] [Table 5]

[0160] The value of the second-level SCI format field Second level SCI format 00 SCI Format 2-A 01 SCI Format 2-B 10 reserve 11 reserve

[0161] [Table 6]

[0162] The value of the Number of DMRS Ports field Antenna port 0 1000 1 1000 and 1001

[0163] Hereinafter, an example of SCI format 2-A will be described.

[0164] SCI format 2-A is used for decoding of the PSSCH and is used together with the HARQ operation when the HARQ-ACK information includes ACK or NACK, when the HARQ-ACK information includes only NACK, or when there is no feedback of HARQ-ACK information.

[0165] The following information is sent via SCI Format 2-A:

[0166] -HARQ process number - 4 bits

[0167] - New data indicator - 1 bit

[0168] - Redundancy version - 2 bits

[0169] - Source ID - 8 bits

[0170] -Destination ID - 16 digits

[0171] -HARQ feedback enable / disable indicator - 1 bit

[0172] - Broadcast Type Indicator - 2 bits, as defined in Table 7

[0173] -CSI request - 1 bit

[0174] [Table 7]

[0175] The value of the broadcast type indicator Broadcast Type 00 broadcast 01 Multicast when HARQ-ACK information includes ACK or NACK 10 Unicast 11 Multicast when HARQ-ACK information includes only NACKs

[0176] Hereinafter, an example of SCI format 2-B will be described.

[0177] For HARQ operation, when HARQ-ACK information includes only NACK, or when there is no feedback of HARQ-ACK information, SCI format 2-B is used for decoding of PSSCH.

[0178] The following information is sent via SCI Format 2-B:

[0179] -HARQ process number - 4 bits

[0180] - New data indicator - 1 bit

[0181] - Redundancy version - 2 bits

[0182] - Source ID - 8 bits

[0183] -Destination ID - 16 digits

[0184] -HARQ feedback enable / disable indicator - 1 bit

[0185] -Region ID - 12 digits

[0186] -Communication range requirement - 4 bits determined by the higher-layer parameter sl-ZoneConfigMCR-Index

[0187] refer to Figure 8 (a) or (b), in step S830, the first UE may receive the PSFCH. For example, the first UE and the second UE may determine the PSFCH resources, and the second UE may use the PSFCH resources to send HARQ feedback to the first UE.

[0188] refer to Figure 8 (a), in step S840, the first UE may send SL HARQ feedback to the base station via PUCCH and / or PUSCH.

[0189] Hereinafter, a hybrid automatic repeat request (HARQ) process will be described.

[0190] For example, SL HARQ feedback can be enabled for unicast. In this case, in non-code block group (non-CBG) operation, if the receiving UE decodes the PSCCH whose target is the receiving UE and if the receiving UE successfully decodes the transport block associated with the PSCCH, the receiving UE can generate a HARQ-ACK. In addition, the receiving UE can send a HARQ-ACK to the transmitting UE. Otherwise, if the receiving UE cannot successfully decode the transport block after decoding the PSCCH whose target is the receiving UE, the receiving UE can generate a HARQ-NACK. In addition, the receiving UE can send a HARQ-NACK to the transmitting UE.

[0191] For example, SL HARQ feedback may be enabled for multicast.For example, in non-CBG operation, two HARQ feedback options may be supported for multicast.

[0192] (1) Multicast Option 1: After a receiving UE decodes a PSCCH destined for the receiving UE, if the receiving UE cannot decode the transport block associated with the PSCCH, the receiving UE may send a HARQ-NACK to the transmitting UE via the PSFCH. Otherwise, if the receiving UE decodes the PSCCH destined for the receiving UE and if the receiving UE successfully decodes the transport block associated with the PSCCH, the receiving UE may not send a HARQ-ACK to the transmitting UE.

[0193] (2) Multicast Option 2: After a receiving UE decodes a PSCCH targeted for the receiving UE, if the receiving UE cannot decode the transport block associated with the PSCCH, the receiving UE may send a HARQ-NACK to the transmitting UE via the PSFCH. Alternatively, if the receiving UE decodes a PSCCH targeted for the receiving UE and successfully decodes the transport block associated with the PSCCH, the receiving UE may send a HARQ-ACK to the transmitting UE via the PSFCH.

[0194] For example, if multicast option 1 is used for SL HARQ feedback, all UEs performing multicast communication can share PSFCH resources. For example, UEs belonging to the same group can send HARQ feedback by using the same PSFCH resources.

[0195] For example, if multicast option 2 is used for SL HARQ feedback, each UE performing multicast communication may use different PSFCH resources for HARQ feedback transmission. For example, UEs belonging to the same group may send HARQ feedback by using different PSFCH resources.

[0196] In the present disclosure, HARQ-ACK may be referred to as ACK, ACK information, or positive ACK information, and HARQ-NACK may be referred to as NACK, NACK information, or negative ACK information.

[0197] Hereinafter, positioning will be described.

[0198] Figure 9 An example of an architecture in a 5G system according to an embodiment of the present disclosure is shown, wherein the 5G system can locate a UE accessing a next-generation radio access network (NG-RAN) or E-UTRAN. Figure 9 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0199] refer to Figure 9, the AMF may receive a request for location service related to a specific target UE from a different entity such as the Gateway Mobile Location Center (GMLC) or may determine that the location service is to be started in the AMF itself instead of the specific target UE. The AMF may then send a location service request to the Location Management Function (LMF). Upon receiving the location service request, the LMF may process the location service request and return a processing request including the estimated location of the UE, etc. to the AMF. Meanwhile, if the location service request is received from a different entity such as the GMLC other than the AMF, the AMF may pass the processing request received from the LMF to the different entity.

[0200] The next generation evolved NB (ng-eNB) and gNB are network elements of the NG-RAN that can provide measurement results for position estimation, can measure radio signals for target UEs, and can deliver the resulting values to the LMF. In addition, the ng-eNB can control several transmission points (TPs) such as the remote radio head that supports the positioning reference signal (PRS)-based beacon system for E-UTRA or PRS-dedicated TPs.

[0201] The LMF may be connected to the Enhanced Serving Mobile Location Center (E-SMLC) and the E-SMLC may allow the LMF to access the E-UTRAN. For example, the E-SMLC may allow the LMF to support Observed Time Difference of Arrival (OTDOA), one of the positioning methods of the E-UTRAN, by using downlink measurement results obtained by the target UE through signals transmitted from the gNB and / or PRS dedicated TP in the E-UTRAN.

[0202] At the same time, the LMF can be connected to the SUPL Location Platform (SLP). The LMF can support and manage different location determination services for the corresponding target UE. The LMF can interact with the serving ng-eNB or serving gNB for the target UE to obtain the UE's location measurement results. For the positioning of the target UE, the LMF can determine the positioning method based on the location service (LCS) client type, the requested quality of service (QoS), the UE positioning capabilities, the gNB positioning capabilities, and the ng-eNB positioning capabilities, and can apply such positioning methods to the serving gNB and / or serving ng-eNB. In addition, the LMF can determine additional information such as the position estimate of the target UE and the accuracy of the position estimate and velocity. The SLP is the secure user plane location (SUPL) entity responsible for positioning through the user plane.

[0203] The UE may measure downlink signals through NG-RAN, E-UTRAN and / or other sources such as: different global navigation satellite systems (GNSS) and terrestrial beacon systems (TBS), wireless local access network (WLAN) access points, Bluetooth beacons, UE air pressure sensors, etc. The UE may include an LCS application. The UE may communicate with a network that the UE can access, or the LCS application may be accessed by another application included in the UE. The LCS application may include measurement and calculation functions required to determine the position of the UE. For example, the UE may include an independent positioning function such as a global positioning system (GPS) and may report the position of the UE independent of NG-RAN transmissions. Positioning information obtained independently in this way may be used as auxiliary information for positioning information obtained from the network.

[0204] Figure 10 An example of implementing a network for measuring the location of a UE based on an embodiment of the present disclosure is shown. Figure 10 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0205] When the UE is in the Connection Management (CM)-Idle state, if the AMF receives a location service request, the AMF may establish a signaling connection with the UE and may request the network to trigger a service to allocate a specific serving gNB or ng-eNB. Figure 10 This operation process is omitted in Figure 10 It is assumed that the UE is in connected mode. However, due to signaling and data deactivation, the signaling connection may be released by the NG-RAN while performing the positioning procedure.

[0206] Will refer to Figure 10 This section describes in detail the network operation process for measuring the location of the UE. In step a1, a 5GC entity such as a GMLC may request the serving AMF to provide location services for measuring the location of the target UE. However, even if the GMLC does not request location services, the serving AMF may determine that location services are required for measuring the location of the target UE based on step 1b. For example, to measure the location of a UE for an emergency call, the serving AMF may determine to directly perform location services.

[0207] Thereafter, the AMF may send a location service request to the LMF based on step 2, and the LMF may initiate a location procedure to obtain location measurement data or location measurement assistance data with the serving ng-eNB and serving gNB. Additionally, based on step 3b, the LMF may initiate a location procedure for downlink positioning with the UE. For example, the LMF may send assistance data as defined in 3GPP TS 36.355, or may obtain a location estimate or location measurement. Step 3b may be performed in addition to or instead of step 3a.

[0208] In step 4, the LMF may provide a location service response to the AMF. In addition, the location service response may include information about whether the UE's location estimation is successful and the UE's location estimation value. Figure 10 The AMF may deliver the location service response to the 5GC entity, such as GMLC, and if initiated by step 1b Figure 10 The AMF can use the location service response to provide location services related to emergency calls, etc.

[0209] Figure 11 An example of a protocol layer for supporting LTE Positioning Protocol (LPP) message transmission between an LMF and a UE according to an embodiment of the present disclosure is shown. Figure 11 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0210] LPP PDU can be sent between AMF and UE via NAS PDU. Figure 11 , LPP can terminate between a target device (e.g., a UE in the control plane or a SUPL-capable terminal (SET) in the user plane) and a location server (e.g., a LMF in the control plane and an SLP in the user plane). LPP messages can be delivered in the form of transparent PDUs over intermediate network interfaces using appropriate protocols such as: NG Application Protocol (NGAP) over the NG-Control (NG-C) interface and NAS / RRC over the NR-Uu interface. The LPP protocol can enable positioning for NR and LTE using various positioning methods.

[0211] For example, based on the LPP protocol, the target device and the location server can exchange mutual capability information, assistance data for positioning, and / or location information. In addition, LPP messages can be used to indicate the exchange of error information and / or the interruption of the LPP process.

[0212] Figure 12 An example of protocol layers for supporting NR Positioning Protocol A (NRPPa) PDU transmission between LMF and NG-RAN nodes based on an embodiment of the present disclosure is shown. Figure 12 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0213] NRPPa can be used for information exchange between NG-RAN nodes and LMF. Specifically, NRPPa can exchange enhanced cell IDs (E-CIDs) for measurement, data for supporting OTDOA positioning methods, and cell IDs, cell location IDs, etc. for NR cell ID positioning methods sent from ng-eNB to LMF. Even if there is no information about the associated NRPPa transaction, the AMF can route NRPPa PDUs based on the routing ID of the associated LMR through the NG-C interface.

[0214] The procedures of the NRPPa protocol for location and data collection can be categorized into two types. The first type is a UE-related procedure for transferring information about a specific UE (e.g., location measurement information, etc.), while the second type is a non-UE-related procedure for transferring information applicable to NG-RAN nodes and related TPs (e.g., gNB / ng-eNB / TP timing information, etc.). Both types of procedures can be supported independently or simultaneously.

[0215] Meanwhile, examples of positioning methods supported in NG-RAN may include GNSS, OTDOA, enhanced cell ID (E-CID), air pressure sensor positioning, WLAN positioning, Bluetooth positioning and terrestrial beacon system (TBS), uplink time difference of arrival (UTDOA), and the like.

[0216] (1) OTDOA (Observed Time Difference of Arrival)

[0217] Figure 13 is a diagram for explaining an OTDOA positioning method according to an embodiment of the present disclosure. Figure 13 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0218] The OTDOA positioning method uses the measured timing of downlink signals received by the UE from the eNB, ng-eNB, and multiple TPs, including PRS-dedicated TPs. The UE measures the timing of the received downlink signals using location assistance data received from a location server. Furthermore, the UE's position can be determined based on these measurement results and the geometric coordinates of neighboring TPs.

[0219] A UE connected to a gNB may request measurement gaps from a TP for OTDOA measurements. If the UE cannot identify the single frequency network (SFN) of at least one TP in the OTDOA assistance data, the UE may use autonomous gaps to obtain the SNF of the OTDOA reference cell before requesting measurement gaps to perform reference signal time difference (RSTD) measurements.

[0220] In this article, RSTD can be defined based on the minimum relative time difference between the boundaries of two subframes received from the reference cell and the measurement cell, respectively. In other words, RSTD can be calculated based on the relative time difference between the start time of the subframe received from the measurement unit and the start time of the subframe of the reference unit closest to the start time of the subframe received from the measurement unit. At the same time, the reference cell can be selected by the UE.

[0221] For correct OTDOA measurement, it may be necessary to measure the time of arrival (TOA) of signals received from three or more geographically distributed TPs or BSs. For example, the TOA can be measured for each of TP1, TP2, and TP3, and the RSTD of TP1-TP2, the RSTD of TP2-TP3, and the RSTD of TP3-TP1 can be calculated for the three TOAs. Based on this, a geometric hyperbola can be determined, and the point where these hyperbolas intersect can be estimated as the position of the UE. In this case, since the accuracy and / or uncertainty of each TOA measurement may exist, the estimated position of the UE can be referred to as a specific range based on the measurement uncertainty.

[0222] For example, the RSTD of the two TPs may be calculated based on Equation 1.

[0223] [Formula 1]

[0224]

[0225] In this paper, c can be the speed of light, {x t ,y t} can be the (unknown) coordinates of the target UE, {x i ,y i} may be the coordinates of a (known) TP, and {x1, y1} may be the coordinates of a reference TP (or another TP). i -T1) is called the "real time difference (RTD)" which is the transmission time offset between two TPs, and n i , n1 can represent a value related to the UE TOA measurement error.

[0226] (2) E-CID (Enhanced Cell ID)

[0227] In the Cell ID (CID) positioning method, the UE's location can be measured using the geographic information of the UE's serving ng-eNB, serving gNB, and / or serving cell. For example, the geographic information of the serving ng-eNB, serving gNB, and / or serving cell can be obtained through paging, registration, etc.

[0228] At the same time, in addition to the CID positioning method, the E-CID positioning method can also use additional UE measurements and / or NG-RAN radio resources to improve the UE position estimate. In the E-CID positioning method, although some of the same measurement methods used in the measurement control system of the RRC protocol can be used, in general, additional measurements are not performed solely for the UE's position measurement. In other words, measurement configuration or measurement control messages may not be additionally provided to measure the UE's position. In addition, the UE may not expect to request additional measurement operations solely for position measurement and may report measurement values obtained using measurement methods that the UE can generally perform measurements on.

[0229] For example, the serving gNB may implement the E-CID positioning method using E-UTRA measurements provided from the UE.

[0230] Examples of measurement elements that can be used for E-CID positioning may be as follows.

[0231] -UE measurements: E-UTRA Reference Signal Received Power (RSRP), E-UTRA Reference Signal Received Quality (RSRQ), UE E-UTRA Rx-Tx Time Difference, GSM EDGE Random Access Network (GERAN) / WLAN Reference Signal Strength Indicator (RSSI), UTRAN Common Pilot Channel (CPICH) Received Signal Code Power (RSCP), UTRAN CPICH Ec / Io

[0232] -E-UTRAN measurements: ng-eNB Rx-Tx time difference, timing advance (TADV), angle of arrival (AoA).

[0233] Herein, TADV can be classified into Type 1 and Type 2 as follows.

[0234] TADV type 1 = (ng-eNB Rx-Tx time difference) + (UE E-UTRA Rx-Tx time difference)

[0235] TADV type 2 = ng-eNB Rx-Tx time difference

[0236] At the same time, AoA can be used to measure the direction of the UE. AoA can be defined as the estimated angle relative to the UE's position in a counterclockwise direction from the BS / TP. In this case, the geographic reference direction can be north. The BS / TP can use uplink signals such as the sounding reference signal (SRS) and / or the demodulation reference signal (DMRS) for AoA measurement. In addition, the larger the antenna array is arranged, the higher the measurement accuracy of AoA. When the element antenna array is arranged at the same interval, the signals received from adjacent antennas can have a constant phase rotation.

[0237] (3) UTDOA (Uplink Time Difference of Arrival)

[0238] UTDOA is a method for determining the UE's location by estimating the arrival time of the SRS. When the estimated SRS arrival time is calculated, the UE's location can be estimated by using the serving cell as a reference cell via the arrival time difference relative to another cell (or BS / TP). To implement UTDOA, the E-SMLC can indicate the serving cell of the target UE to indicate the SRS transmission to the target UE. In addition, the E-SMLC can provide configurations such as whether the SRS is periodic / aperiodic, bandwidth, frequency / group / sequence hopping, etc.

[0239] (4) Round Trip Time (RTT)

[0240] RTT is a positioning technique that can measure the distance between two entities, even if the time between the target entity and the server entity is not synchronized. If RTT is performed using multiple server entities, the distance to each server entity can be measured separately. In addition, by drawing circles using the distances measured from each server entity, the target entity can be absolutely located at the intersection of the circles. This may be referred to as multi-RTT, for example.

[0241] The RTT between two entities is calculated as follows. Entity #1 can transmit PRS #1 at t1, and entity #2 can receive PRS #1 at t2. After entity #2 receives PRS #1, entity #2 can transmit PRS #2 at t3, and entity #1 can receive PRS #2 at t4. In this case, the distance D between the two entities can be obtained as follows.

[0242] [Formula 2]

[0243] D = c × {(t4 - t1) - (t3 - t2)} / 2 (where c is the speed of light)

[0244] For the RTT between the UE and the gNB, the distance between the UE and the gNB can be obtained using the UE Rx-Tx time difference and the gNB Rx-Tx time difference in the following table based on Equation 2.

[0245] (5) Bilateral RTT

[0246] Bilateral RTT is a positioning technique that can measure the distance between a target entity and a server entity even if there is a sampling clock frequency offset between the two entities.

[0247] The method for performing two-sided RTT between two entities is as follows.

[0248] Figure 14A two-sided RTT according to an embodiment of the present disclosure is shown. Figure 14 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0249] Bilateral RTT is widely used in ultra-wideband (UWB) positioning and can reduce the impact of clock errors. Figure 14 , can be measured by two measurements (i.e., T round1 、T round2 、T reply1 、T reply2 ) to estimate the propagation delay T. For example, the propagation delay T can be estimated based on Equation 3.

[0250] [Formula 3]

[0251]

[0252] In addition, T can be obtained based on Equation 4 round1 ×T round2 -T reply1 ×T reply2 .

[0253] [Formula 4]

[0254]

[0255] in

[0256]

[0257] Therefore, the propagation delay T can be estimated as shown in Equation 5.

[0258] [Formula 5]

[0259]

[0260] In this case, the error in propagation delay estimation due to the clock error can be obtained based on Equation 6.

[0261] [Formula 6]

[0262]

[0263] in

[0264] e UE1 and e UE2 is the clock offset between UE1 and UE2;

[0265] is the estimated propagation delay between UE1 and UE2.

[0266] An example of the reference signal time difference (RSTD) is shown in Table 8. The RSTD in Table 8 can be applied to SL positioning.

[0267] [Table 8]

[0268]

[0269] Table 9 shows an example of DL PRS reference signal received power (RSRP). The DL PRS RSRP of Table 9 can be applied to SL positioning.

[0270] [Table 9]

[0271]

[0272] An example of DL relative signal time difference (RSTD) is shown in Table 10. The DL RSTD of Table 10 can be applied to SL positioning.

[0273] [Table 10]

[0274]

[0275] Table 11 shows an example of UE Rx-Tx time difference. The UE Rx-Tx time difference of Table 11 can be applied to SL positioning.

[0276] [Table 11]

[0277]

[0278] Table 12 shows the UL relative time of arrival (UL RTOA) (T UL-RTOA ) example. The UL RTOA of Table 12 can be applied to SL positioning.

[0279] [Table 12]

[0280]

[0281] Table 13 shows an example of the gNB Rx-Tx time difference. The gNB Rx-Tx time difference in Table 13 can be applied to SL positioning.

[0282] [Table 13]

[0283]

[0284] Table 14 shows an example of UL angle of arrival (AoA). The UL AoA of Table 14 can be applied to SL positioning.

[0285] [Table 14]

[0286]

[0287] Table 15 shows an example of UL SRS reference signal received power (RSRP). The UL SRS RSRP of Table 15 can be applied to SL positioning.

[0288] [Table 15]

[0289]

[0290] In the following, the UE procedure for determining the resource subset to be reported to higher layers in PSSCH resource selection in sidelink resource allocation mode 2 will be described.

[0291] In resource allocation mode 2, higher layers can request the UE to determine a subset of resources from which they will select resources for PSSCH / PSCCH transmission. To trigger this process, in time slot n, higher layers provide the following parameters for this PSSCH / PSCCH transmission:

[0292] - the resource pool from which the resource is to be reported;

[0293] -L1 priority, prio TX ;

[0294] - Remaining packet delay budget;

[0295] - The number of subchannels to be used for PSSCH / PSCCH transmission in a time slot, L subCH ;

[0296] -Optionally, the resource reservation interval, P rsvp_TX , in milliseconds.

[0297] - If higher layers request the UE to determine a subset of resources from which the higher layers shall select resources for PSSCH / PSCCH transmission as part of the re-evaluation or pre-emption procedure, the higher layers shall provide the set of resources that may be subject to re-evaluation (r0, r1, r2, ...) and the set of resources that may be subject to pre-emption (r'0, r'1, r'2, ...).

[0298] -Depends on UE implementation to i - Before or after T3 determines the subset of resources requested by higher layers, where r i ” is the slot with the smallest slot index among (r0, r1, r2, ...) and (r'0, r'1, r'2, ...), and T3 is equal to T SL proc,1 Here, T SL proc,1 Defined as the number of time slots determined by the SCS configuration based on the SL BWP, where μ SL It is the SCS configuration of SL BWP.

[0299] The following high-level parameters influence this process:

[0300] -sl-SelectionWindowList: internal parameter T 2min For a given prio TX The value is set to the corresponding value from the higher-level parameter sl-SelectionWindowList.

[0301] -sl-Thres-RSRP-List: This high-level parameter is for each combination (p i , p j ) provides the RSRP threshold, where p i is the value of the priority field in the received SCI format 1-A, and p j is the transmission priority of the UE for selecting resources; for a given invocation of this procedure, p j =prio TX .

[0302] -sl-RS-ForSensing selects whether the UE uses PSSCH-RSRP or PSCCH-RSRP measurement.

[0303] -sl-ResourceReservePeriodList

[0304] -sl-SensingWindow: The internal parameter T0 is defined as the number of time slots corresponding to sl-SensingWindow milliseconds.

[0305] -sl-TxPercentageList: given prio TX The internal parameter X is defined as sl-TxPercentageList(prio TX ).

[0306] -sl-PreemptionEnable: If sl-PreemptionEnable is provided and it is not equal to "enabled", the internal parameter prio pre Set to the parameter sl-PreemptionEnable provided by higher layers.

[0307] If the resource reservation interval P is provided rsvp_TX , then convert it from millisecond units to logical time slot units to obtain P' rsvp_TX .

[0308] Notation:

[0309] (t' SL0, t' SL 1. t' SL 2. ...) represents the set of time slots belonging to the side link resource pool.

[0310] For example, the UE may select a candidate resource (S A For example, if resource (re)selection is triggered, the UE may select a candidate resource (S A For example, if re-evaluation or preemption is triggered, the UE may select a candidate resource (S A ) collection.

[0311] [Table 16]

[0312]

[0313]

[0314] At the same time, if the resource pool for SL communication and the resource pool for SL positioning are configured separately, a time gap may be required due to RF switching between the resource pool for SL communication and the resource pool for SL positioning. This may increase the latency of SL positioning. In addition, since the two resource pools are configured within one SL BWP, there is a problem in that the SL resources within the SL BWP are not effectively used during the time when SL positioning or SL communication is not performed. In the present disclosure, for ease of explanation, the resource pool used for SL communication and SL positioning may be referred to as a common resource pool, and the resource pool used only for SL positioning may be referred to as a dedicated resource pool. At the same time, if a common resource pool and a transmission resource pool are configured for the UE, it is necessary to define the conditions under which the UE can use the common resource pool and / or the method for the UE to select resources from the common resource pool.

[0315] At the same time, when a resource pool for SL communication is defined, a resource pool for SL positioning needs to be defined. If the SL PRS transmission for SL positioning is sent in the resource pool for SL communication, there will be mutual interference and resource conflict between the SL PRS transmission resources and the SL data transmission resources.

[0316] Meanwhile, when configuring the SL PRS configuration transmitted for SL positioning, if the SL PRS configuration is configured without considering the transmission channel, there is a problem in that the SL PRS reception performance deteriorates or the SL PRS transmission resources are not effectively used.

[0317] In the present disclosure, in order to solve the problem, conditions, methods, and operations for performing SL PRS transmission and SL positioning using a resource pool for SL communication, as well as an apparatus supporting the same, are proposed. In the present disclosure, in order to solve the problem, methods and operations for minimizing interference and conflict between transmission resources for SL communication and transmission resources for SL positioning if a resource pool for SL communication and a resource pool for SL positioning are configured, as well as an apparatus supporting the same, are proposed. In the present disclosure, in order to solve the problem, methods and operations for configuring SL PRS configuration based on characteristics of a transmission channel for SL PRS transmission, as well as an apparatus supporting the same, are proposed.

[0318] In this disclosure, the following terms may be used.

[0319] -LMF: Location Management Function

[0320] -UE-triggered SL positioning: Sidelink (SL) positioning triggered by the UE

[0321] -SL positioning triggered by base station / LMF: SL positioning triggered by base station / LMF

[0322] -UE-controlled SL positioning: SL positioning in which the UE creates a SL positioning group

[0323] -Base station controlled SL positioning: SL positioning of SL positioning groups created by the base station

[0324] -UE-based SL positioning: SL positioning in which the UE position is calculated by the UE

[0325] -UE-assisted SL positioning: SL positioning where the UE position is calculated by the base station / LMF

[0326] -SL positioning group: UEs participating in SL positioning

[0327] -Target UE (T-UE): UE whose location is calculated

[0328] -Server UE (S-UE): UE that assists T-UE in SL positioning

[0329] Anchor UE: UE that assists in positioning T-UE

[0330] -MG: Measurement gaps that only allow SL PRS transmission

[0331] -MW: Measurement window capable of sending SL data and SL PRS in a multiplexed manner

[0332] -SL PRS: Sidelink Positioning Reference Signal

[0333] -CCH: Control Channel

[0334] - Inter-UE coordination (IUC) message: A message received by a TX UE from other UEs including an RX UE, which includes information on a set of resources suitable for the TX UE to transmit to the RX UE (preferred resources) and / or information on a set of resources not suitable for transmission (non-preferred resources).

[0335] For example, the SL PRS transmission resources may include an SL PRS resource set including the following information.

[0336] -SL PRS resource set ID

[0337] -SL PRS resource ID list: List of SL PRS resource IDs in the SL PRS resource set

[0338] -SL PRS resource type: can be set to periodic, aperiodic, semi-persistent or on-demand

[0339] -Alpha for SL PRS power control

[0340] -P0 for SL PRS power control

[0341] - Path loss reference for SL PRS power control: can be set to SL SSB or DLPRS or UL SRS or UL SRS or PSCCH DMRS or PSSCH DMRS or PSFCH or SL CSI RS for positioning, etc.

[0342] For example, the SL PRS resource set may include SL PRS resources including the following information.

[0343] -SL PRS resource ID

[0344] -SL PRS comb size: Spacing between REs used for SL PRS transmission within a symbol

[0345] -SL PRS comb offset: RE index where SL PRS is first transmitted within the first SL PRS symbol

[0346] -SL PRS comb cyclic shift: Cyclic shift used to generate the sequence that constitutes the SL PRS

[0347] -SL PRS starting position: the index of the first symbol where SL PRS is transmitted in one slot

[0348] -SL PRS symbol number: The number of symbols configured for SL PRS in one time slot

[0349] - Frequency domain shift: The lowest frequency position (index) in the frequency domain where the SL PRS is transmitted

[0350] -SL PRS BW: Frequency bandwidth used to send SL PRS

[0351] -SL PRS resource type: can be set to periodic, aperiodic, semi-persistent or on-demand

[0352] -SL PRS periodicity: The time domain periodicity between SL PRS resources, in units of physical time slots or logical time slots in the resource pool where SL PRS is sent

[0353] -SL PRS offset: The offset in the time domain of the start of the first SL PRS resource relative to the reference timing, in units of physical time slots or logical time slots in the resource pool where the SL PRS is transmitted. The reference timing can be SFN=0 or DFN=0, or the time when the RRC / MAC-CE / DCI / SCI associated with the SL PRS resource is successfully received or decoded.

[0354] -SL PRS Sequence ID

[0355] -SL PRS spatial relationship: can be set to SL SSB or DL PRS or UL SRS or UL SRS or PSCCH DMRS or PSSCH DMRS or PSFCH or SL CSI RS, etc. for positioning.

[0356] -SL PRS CCH: SL PRS control channel, which can be used to send SL PRS resource configuration information, resource location and other signals.

[0357] Figure 15 The process of a UE selecting a dedicated resource pool or a public resource pool and performing positioning according to an embodiment of the present disclosure is illustrated. Figure 15 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0358] Reference Figure 15 , in step S1510, a public resource pool for SL communication and SL PRS transmission and a dedicated resource pool only for SL positioning may be configured or allowed to the UE. For example, the UE may obtain information related to the public resource pool and / or information related to the dedicated resource pool. In this case, in step S1520, the conditions based on which the UE selects the public resource pool, transmits the SL PRS, and performs SL positioning may be as follows. For example, if at least one of the following items is met, the UE may select the public resource pool, and the UE may perform positioning based on the SL PRS transmitted or received within the public resource pool. For example, the UE may be a T-UE. For example, the UE may be an S-UE. For example, the UE may be an anchor UE.

[0359] - If the channel busy rate (CBR) value associated with the dedicated resource pool is greater than or equal to a certain threshold.

[0360] - If the CBR value associated with the common resource pool is less than or equal to a certain threshold.

[0361] - If the CBR value associated with the dedicated resource pool exceeds the CBR value associated with the public resource pool by at least a certain threshold.

[0362] -If the time delay value required for SL positioning is less than or equal to a specific threshold.

[0363] - If the bandwidth of the common resource pool is greater than or equal to the required bandwidth associated with the positioning accuracy required for SL positioning.

[0364] - If the UE does not have the capability to perform SL positioning and / or SL communication based on two resource pools.

[0365] - If the UE does not support RF handover operation between two resource pools.

[0366] - If the priority value associated with the SL PRS transmitted and received for SL positioning is greater than or equal to a specific threshold, the SL PRS may be transmitted through a common resource pool that is more interfered with by SL communication. For example, if the priority value is less than or equal to a specific threshold, the SL PRS may be transmitted through a dedicated resource pool that is less interfered with by SL communication.

[0367] - As a default operation, the UE may send the SL PRS using the dedicated resource pool, and the UE may send the SL PRS using the common resource pool only if it is (pre-)configured to use the common resource pool.

[0368] Table 17 shows an example of SL channel busy rate (CBR) and SL received signal strength indicator (RSSI).

[0369] [Table 17]

[0370]

[0371] Referring to Table 17, the slot index may be based on the physical slot index.

[0372] For example, if the UE uses a common resource pool to send an SL PRS and / or a CCH related to the SL PRS or report measurement values, the UE may perform the following operations.

[0373] For example, the priority value associated with the transmission of the CCH or measurement value may be (pre) configured or determined based on the priority value associated with the associated SLPRS. For example, the priority value associated with the transmission of the CCH or measurement value may be (pre) configured or determined to be the same as the priority value associated with the SL PRS.

[0374] For example, in a case where the UE selects SL PRS transmission resources and SL communication data transmission resources based on sensing in a common resource pool, if the RSRP value associated with the SL communication data transmission of another UE is greater than or equal to a specific RSRP threshold #1, and the reserved resources indicated by the SL communication data transmission of the other UE conflict with the candidate resources that can be used for SL PRS transmission, the UE may exclude the candidate resources from the final candidate resources to be used for SL PRS transmission. For example, in the common resource pool, the specific RSRP threshold #1 may be configured to be less than or equal to the specific RSRP threshold #2 associated with the sensing-based SL communication data transmission resource selection process. Through this, SL communication data transmission in the common resource pool may be prioritized over SL PRS transmission. For example, in the common resource pool, the specific RSRP threshold #1 may be configured to be greater than or equal to the specific RSRP threshold #2 associated with the sensing-based SL communication data transmission resource selection process. Through this, SL PRS transmission in the common resource pool may be prioritized over SL communication data transmission.

[0375] For example, the priority between SL communication data transmission and SL positioning (or SL PRS) transmission can be (pre-)configured for each common resource pool. For example, a gap (gap) between a specific RSRP threshold #2 related to the SL communication data transmission resource selection process and a specific RSRP threshold #1 related to the SL positioning (or SL PRS) transmission resource selection process can be (pre-)configured for each common resource pool. For example, if SL communication data transmission is configured to have a higher priority than SL positioning (or SL PRS) transmission (SL communication data transmission takes precedence over SL positioning (or SL PRS) transmission), RSRP threshold #1 can be configured based on the gap and RSRP threshold #2. For example, RSRP threshold #1 can be configured as a value obtained by subtracting the gap from RSRP threshold #2.

[0376] For example, in the above case, if SL communication data transmission is configured to have a higher priority than SL positioning (or SL PRS) transmission (SL communication data transmission takes precedence over SL positioning (or SL PRS) transmission), the RSRP increment value #1 associated with the SL positioning (or SL PRS) transmission resource selection process in the common resource pool can be configured to be a value smaller than the RSRP increment value #2 associated with the SL communication data transmission resource selection process. For example, if SL communication data transmission is configured to have a lower priority than SL positioning (or SL PRS) transmission (SL communication data transmission does not take precedence over SL positioning (or SL PRS) transmission), the RSRP increment value #1 associated with the SL positioning (or SL PRS) transmission resource selection process in the common resource pool can be configured to be a value larger than the RSRP increment value #2 associated with the SL communication data transmission resource selection process.

[0377] For example, the minimum unit of SL communication data transmission resource selection may be a subchannel, and the minimum unit of SL positioning (or SL PRS) transmission resource selection may be a resource element (RE) (i.e., one subcarrier resource within one symbol). For example, if there are one or more SL communication data transmission resources reserved by another UE that overlap within the frequency band of the candidate SL PRS transmission resources (or SL PRS resources) that can be used for SL PRS transmission, it may be determined based on each RSRP value associated with the one or more reserved SL communication data transmission resources whether to exclude the candidate SL PRS transmission resource. For example, it may be determined based on the average value of the respective RSRP values associated with the one or more reserved SL communication data transmission resources whether to exclude the candidate SL PRS transmission resource. For example, if the average value of the respective RSRP values associated with the one or more reserved SL communication data transmission resources is greater than or equal to a specific RSRP threshold, the candidate SL PRS transmission resource may be excluded from the final candidate SL PRS transmission resources.

[0378] For example, in the above case, if the reserved one or more SL communication data transmission resources overlap with each other, a specific offset value may be added to the average value of the respective RSRP values associated with the reserved one or more SL communication data transmission resources based on the ratio of the overlapping portions in the union of the reserved one or more SL communication data transmission resources. For example, if the ratio of the overlapping portions in the union of the reserved one or more SL communication data transmission resources is N / M (M≥N>0), the offset value may be determined as a value obtained by multiplying the average value of the respective RSRP values by N / M.

[0379] For example, a resource pool #1 for SL positioning in which SL PRS is sent and a resource pool #2 for SL communication in which signals / channels related to the SL PRS to be sent for SL positioning (for example, CCH related to SL PRS, measurement report values, SL positioning configuration signaling, etc.) are sent can be configured separately within one SL BWP.

[0380] In the above scenario, resource pool #1 used for SL positioning and resource pool #2 used for SL communication can be configured to not overlap in the time domain. For example, the resources within resource pool #1 and the resources within resource pool #2 can be configured to be separated by a time interval greater than or equal to a specific threshold. For example, this time interval can be used as the time interval required for RF switching between two resource pools that may have different bandwidths. For example, this time interval can be configured to a specific threshold for each SL BWP.

[0381] In the above case, the SL SSB signal transmitted for SL communication may not belong to both resource pool #1 and resource pool #2. For example, resources belonging to resource pool #1 and resources belonging to resource pool #2 may be configured from resources available for UL communication.

[0382] In the above case, for example, the bandwidth of one SL BWP may be configured to be a value that is not smaller than the bandwidth required / used for SL communication and the bandwidth required / used for SL positioning. For example, the bandwidth required / used for SL communication and the bandwidth required / used for SL positioning may be configured to be a value that is not smaller than the bandwidth of one SL BWP.

[0383] For example, a resource pool #1 for SL positioning in which an SLPRS is transmitted and a resource pool #2 for SL communication in which signals / channels related to the SL PRS to be transmitted for SL positioning (e.g., a CCH related to the SL PRS, measurement report values, SL positioning configuration signaling, etc.) are transmitted may be configured in SL BWP #1 and SL BWP #2 included in the same SL carrier, respectively. In this case, SL BWP #1 and SL BWP #2 may overlap in whole or in part in the frequency domain. In this case, resource pool #1 for SL positioning within SL BWP #1 and resource pool #2 for SL communication within SL BWP #2 may be configured so as not to overlap with each other in the time domain.

[0384] In the above case, for example, resources in resource pool #1 within SL BWP #1 and resources in resource pool #2 within SL BWP #2 can be configured to be separated by a time interval greater than or equal to a specific threshold. For example, this time interval can be used as the time interval required for RF switching between two SL BWPs including two resource pools that may have different bandwidths. For example, this time interval can be configured to a specific threshold for each SL carrier including two SL BWPs.

[0385] In the above case, SL BWP#1 including resource pool#1 and SL BWP#2 including resource pool#2 may be configured to have the same SCS. For example, only two SL BWPs having the same SCS may be configured as SL BWP#1 and SL BWP#2.

[0386] In the above case, SL BWP #1 and SL BWP #2 can be configured in SL BWPs having the same center frequency. For example, SL BWP #1 and SL BWP #2 can be configured in SL BWPs having the same overlapping subcarrier positions. For example, SLBWP #1 and SL BWP #2 can be configured in SL BWPs in which the difference between the subcarrier frequencies to which the two SL BWPs belong is the same as a specific configuration value.

[0387] In the above case, SL BWP#1 and SL BWP#2 may be configured in SL BWPs that do not require a transition time required for RF switching or whose transition time is within a specific threshold when performing BWP switching between each other.

[0388] For example, a resource pool #1 for SL positioning in which an SL PRS is transmitted and a resource pool #2 for SL communication in which signals / channels related to the SL PRS to be transmitted for SL positioning (e.g., CCH related to the SL PRS, measurement report values, SL positioning configuration signaling, etc.) are transmitted may be configured in SL BWP #1 and SL BWP #2, which are respectively included in different SL carriers #1 and #2. In the above case, the resource pool #1 for SL positioning in SL BWP #1 and the resource pool #2 for SL communication in SL BWP #2 may be configured so as not to overlap with each other in the time domain.

[0389] In the above case, for example, the resources in resource pool #1 in SL carrier #1 and the resources in resource pool #2 in SL carrier #2 can be configured to be separated by a time interval greater than or equal to a specific threshold. For example, this time interval can be used as the time interval required for RF handover between two SL carriers including two resource pools that may have different bandwidths. For example, this time interval can be configured as a specific threshold for each (paired) SL carrier.

[0390] In the above case, SL BWP#1 including resource pool#1 in SL carrier#1 and SL BWP#2 including resource pool#2 in SL carrier#2 may be configured to have the same SCS. For example, only two SL BWPs having the same SCS may be configured as SLBWP#1 and SL BWP#2.

[0391] In the above case, SL carrier #1 and SL carrier #2 can be configured among SL carriers that do not require a transition time required for RF switching or whose transition time is within a specific threshold when performing carrier switching between each other.

[0392] For example, the SL PRS comb size in the SL PRS configuration information may be determined / configured based on the cyclic prefix (CP) length of the OFDM symbol applied to the SL PRS symbol included in the SL PRS resource. For example, since a CP length greater than or equal to a specific threshold means that the delay spread of the SL PRS transmission channel is relatively large, the SL PRS comb size may be configured / determined to be less than or equal to the specific threshold to compensate for frequency selectivity that may occur in the frequency domain due to the characteristics of the SL PRS transmission channel. For example, if the CP length is less than a specific threshold, the SL PRS comb size may be configured / determined to be greater than the specific threshold.

[0393] For example, the cyclic prefix (CP) length of the OFDM symbol in the resource pool in which the SL PRS is transmitted may be determined / configured based on the SL PRS comb size in the SLPRS configuration information. For example, since the SL PRS comb size being less than or equal to a specific threshold value means that the SL PRS is transmitted through an SL PRS transmission channel having a relatively large delay spread, the CP length may be configured to be greater than or equal to the specific threshold value to prevent mutual interference between OFDM symbols due to the characteristics of the SL PRS transmission channel. For example, if the SL PRS comb size is greater than a specific threshold value, the CP length may be configured / determined to be less than the specific threshold value.

[0394] For example, the SL PRS comb size in the SL PRS configuration information may be determined / configured based on the SCS value of the OFDM symbol applied to the SL PRS symbol included in the SL PRS resource. For example, since an SCS value less than or equal to a specific threshold value means that the SL PRS is transmitted through an SL PRS transmission channel having a relatively large delay spread, the SL PRS comb size may be configured / determined to be less than or equal to the specific threshold value to compensate for frequency selectivity that may occur in the frequency domain due to the characteristics of the SL PRS transmission channel. For example, if the SCS value is greater than a specific threshold value, the SL PRS comb size may be configured / determined to be greater than the specific threshold value.

[0395] For example, the SCS value of the OFDM symbol in the resource pool in which the SL PRS is transmitted may be determined / configured based on the SL PRS comb size in the SL PRS configuration information. For example, since the SL PRS comb size being less than or equal to a specific threshold value means that the SL PRS is transmitted through an SL PRS transmission channel having a relatively large delay spread, the SCS value may be configured / determined to be less than or equal to the specific threshold value to compensate for frequency selectivity that may occur in the frequency domain due to the characteristics of the SL PRS transmission channel. For example, if the SL PRS comb size is greater than a specific threshold value, the SCS value may be configured / determined to be greater than the specific threshold value.

[0396] For example, if the SL PRS used for SL positioning and the SL data related to the SL PRS (e.g., CCH, measurement report, etc.) or the SL data used for SL communication are transmitted in the same resource pool, the CP length of the OFDM symbol transmitted in the resource pool can be determined based on the CP length required for transmitting the SL data and the CP length required for transmitting the SL PRS. For example, the CP length of the OFDM symbol transmitted in the resource pool can be configured / determined to be a value that is not less than the CP length required for transmitting the SL data and the CP length required for transmitting the SL PRS. For example, the CP length required for transmitting the SLPRS can be determined in combination with the SL PRS comb size as described above.

[0397] For example, if the SL PRS used for SL positioning and the SL data related to the SL PRS (e.g., CCH, measurement report, etc.) or the SL data used for SL communication are transmitted in the same resource pool, the SCS value of the OFDM symbol transmitted in the resource pool can be configured / determined based on the SCS value required for transmitting the SL data and the SCS value required for transmitting the SL PRS. For example, the SCS value of the OFDM symbol transmitted in the resource pool can be configured / determined to be a value that is not greater than the SCS value required for transmitting the SL data and the SCS value required for transmitting the SL PRS. For example, the SCS value required for transmitting the SL PRS can be determined in combination with the SL PRS comb size as described above.

[0398] For example, if the SL PRS used for SL positioning and the SL data related to the SL PRS (e.g., CCH, measurement report, etc.) or the SL data used for SL communication are transmitted in the same resource pool, the SL PRS comb size may be determined (according to the above method) based on the CP length of the OFDM symbol in the resource pool required to transmit the SL data. For example, in the above case, the SL PRS comb size may be determined (according to the above method) based on the SCS value of the OFDM symbol in the resource pool required to transmit the SL data.

[0399] For example, whether to apply the rules and / or the parameter values associated with the proposed method / rules may be configured / allowed specifically (or differently or independently) for the service type. For example, whether to apply the rules and / or the parameter values associated with the proposed method / rules may be configured / allowed specifically (or differently or independently) for the (LCH or service) priority. For example, whether to apply the rules and / or the parameter values associated with the proposed method / rules may be configured / allowed specifically (or differently or independently) for the QoS requirements (e.g., latency, reliability, minimum communication range). For example, whether to apply the rules and / or the parameter values associated with the proposed method / rules may be configured / allowed specifically (or differently or independently) for the PQI parameters. For example, whether to apply the rules and / or the parameter values associated with the proposed method / rules may be configured / allowed specifically (or differently or independently) for the LCH / MAC PDU (transmission) with SL HARQ feedback enabled. For example, whether to apply the rules and / or the parameter values related to the proposed method / rules can be specifically (or differently or independently) configured / allowed for LCH / MAC PDU (transmission) with SL HARQ feedback disabled. For example, whether to apply the rules and / or the parameter values related to the proposed method / rules can be specifically (or differently or independently) configured / allowed for the CBR measurement value of the resource pool. For example, whether to apply the rules and / or the parameter values related to the proposed method / rules can be specifically (or differently or independently) configured / allowed for the SL broadcast type (e.g., unicast, multicast, broadcast). For example, whether to apply the rules and / or the parameter values related to the proposed method / rules can be specifically (or differently or independently) configured / allowed for the SL multicast HARQ feedback options (e.g., NACK feedback only, ACK / NACK feedback, NACK feedback based only on TX-RX distance). For example, whether to apply the rule and / or the parameter value related to the proposed method / rule may be specifically (or differently or independently) configured / allowed for the SL mode 1 CG type (e.g., SL CG type 1 or SL CG type 2). For example, whether to apply the rule and / or the parameter value related to the proposed method / rule may be specifically (or differently or independently) configured / allowed for the SL mode type (e.g., mode 1 or mode 2). For example, whether to apply the rule and / or the parameter value related to the proposed method / rule may be specifically (or differently or independently) configured / allowed for the resource pool. For example, whether to apply the rule and / or the parameter value related to the proposed method / rule may be specifically (or differently or independently) configured / allowed for whether the PSFCH resource is configured in the resource pool. For example, whether to apply the rule and / or the parameter value related to the proposed method / rule may be specifically (or differently or independently) configured / allowed for whether the PSFCH resource is configured in the resource pool. For example, whether to apply the rule and / or the parameter value related to the proposed method / rule may be specifically (or differently or independently) configured / allowed for the source (L2) ID.For example, whether to apply the rule and / or the parameter value related to the proposed method / rule can be configured / allowed specifically (or differently or independently) for the destination (L2) ID. For example, whether to apply the rule and / or the parameter value related to the proposed method / rule can be configured / allowed specifically (or differently or independently) for the PC5 RRC connection link. For example, whether to apply the rule and / or the parameter value related to the proposed method / rule can be configured / allowed specifically (or differently or independently) for the SL link. For example, whether to apply the rule and / or the parameter value related to the proposed method / rule can be configured / allowed specifically (or differently or independently) for the connection state (with the base station) (e.g., RRC connection state, idle state, inactive state). For example, whether to apply the rule and / or the parameter value related to the proposed method / rule can be configured / allowed specifically (or differently or independently) for the SL HARQ process (ID). For example, whether to apply the rules and / or the parameter values related to the proposed method / rules may be specifically (or differently or independently) configured / allowed depending on whether SL DRX operation is performed (TX UE or RX UE). For example, whether to apply the rules and / or the parameter values related to the proposed method / rules may be specifically (or differently or independently) configured / allowed depending on whether the UE is an energy-saving (TX or RX) UE. For example, whether to apply the rules and / or the parameter values related to the proposed method / rules may be specifically (or differently or independently) configured / allowed depending on whether the UE is an energy-saving (TX or RX) UE. For example, whether to apply the rules and / or the parameter values related to the proposed method / rules may be specifically (or differently or independently) configured / allowed depending on the case where PSFCH TX and PSFCH RX (and / or multiple PSFCH TX (exceeding UE capabilities)) overlap (and / or the case where PSFCH TX (and / or PSFCH RX) is skipped) (from the perspective of a specific UE). For example, whether to apply the rules and / or the parameter values related to the proposed method / rules may be specifically (or differently or independently) configured / allowed depending on the case where the RX UE actually (successfully) receives a PSCCH (and / or PSSCH) (re)transmission from the TX UE.

[0400] For example, in the present disclosure, the term "configured / configured (or designated / specified)" can be extended to / interpreted as the base station notifying the UE through a predefined (physical layer or higher layer) channel / signal (e.g., SIB, RRC, MAC CE) (and / or being provided through pre-configuration and / or the UE notifying other UEs through a predefined (physical layer or higher layer) channel / signal (e.g., SL MAC CE, PC5 RRC)).

[0401] For example, in the present disclosure, the term "PSFCH" can be extended to / interpreted as (NR or LTE) PSSCH (and / or (NR or LTE) PSCCH) (and / or (NR or LTE) SL SSB (and / or UL channel / signal)). In addition, the methods proposed in the present disclosure can be used in combination with each other (as a new approach).

[0402] For example, in the present disclosure, a specific threshold value may refer to a threshold value predefined or (pre-) configured by a higher layer (including an application layer) of the network, a base station, or a UE. For example, in the present disclosure, a specific configuration value may refer to a value predefined or (pre-) configured by a higher layer (including an application layer) of the network, a base station, or a UE. For example, the operation of network / base station configuration may refer to the base station (pre-) configuring the UE via higher layer RRC signaling, or configuring / signaling the UE via MAC CE, or signaling the UE via DCI.

[0403] Figure 16 A method for a first device to perform wireless communication according to an embodiment of the present disclosure is illustrated. Figure 16 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0404] Reference Figure 16 In step S1610, the first device may obtain configuration information related to the dedicated resource pool. In step S1620, the first device may obtain configuration information related to the public resource pool. In step S1630, the first device may measure the side link (SL) received signal strength indicator (RSSI) for the dedicated resource pool or the public resource pool on the channel busy rate (CBR) measurement window. In step S1640, the first device may obtain the SL CBR based on the measurement. In step S1650, the first device may select the public resource pool based on the SL CBR. In step S1660, the first device may perform SL positioning reference signal (PRS) transmission within the public resource pool.

[0405] For example, the public resource pool may be a resource pool used for SL communication and SL positioning, and the dedicated resource pool may be a resource pool used only for SL positioning.

[0406] For example, the public resource pool may be selected based on the SL CBR associated with the dedicated resource pool being greater than or equal to a threshold.

[0407] For example, the common resource pool may be selected based on the SL CBR associated with the common resource pool being less than or equal to a threshold.

[0408] For example, the SL CBR may include a first SL CBR associated with a dedicated resource pool and a second SL CBR associated with a common resource pool, and the common resource pool may be selected based on the first SL CBR exceeding the second SL CBR by at least a threshold.

[0409] For example, the public resource pool may be selected based on the time delay required for SL positioning being less than or equal to a threshold.

[0410] For example, the public resource pool may be selected based on the first device not having the capability to perform SL positioning or SL communication based on the dedicated resource pool and the public resource pool.

[0411] For example, the public resource pool may be selected based on the first device not supporting radio frequency (RF) switching between the dedicated resource pool and the public resource pool.

[0412] For example, the common resource pool may be selected based on a priority value associated with SL PRS transmission being greater than or equal to a threshold.

[0413] For example, a first RSRP threshold for resource selection related to SL positioning within the common resource pool and a second RSRP threshold for resource selection related to SL communication within the common resource pool may be configured for the first device.

[0414] For example, a first RSRP increment value for resource selection related to SL positioning in a common resource pool and a second RSRP increment value for resource selection related to SL communication in a common resource pool may be configured for the first device.

[0415] For example, the first device may be configured with a priority related to SL positioning within the public resource pool and a priority related to SL communication within the public resource pool.

[0416] Additionally, for example, the first device may determine candidate resources related to SL PRS transmission within the common resource pool. For example, based on the overlap between multiple resources reserved for SL communication and SL PRS resources used for SL positioning, whether to exclude SL PRS resources from the candidate resources may be determined based on at least one of an average value of RSRP values associated with the multiple resources or an overlap rate between the multiple resources and the SLPRS resources.

[0417] The proposed method can be applied to devices based on various embodiments of the present disclosure. First, the processor 102 of the first device 100 can obtain configuration information related to the dedicated resource pool. In addition, the processor 102 of the first device 100 can obtain configuration information related to the public resource pool. In addition, the processor 102 of the first device 100 can measure the side link (SL) received signal strength indicator (RSSI) for the dedicated resource pool or the public resource pool on the channel busy rate (CBR) measurement window. In addition, the processor 102 of the first device 100 can obtain the SL CBR based on the measurement. In addition, the processor 102 of the first device 100 can select the public resource pool based on the SL CBR. In addition, the processor 102 of the first device 100 can control the transceiver 106 to perform SL positioning reference signal (PRS) transmission within the public resource pool.

[0418] Based on an embodiment of the present disclosure, a first device suitable for performing wireless communication may be provided. For example, the first device may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, these instructions, based on being executed by the at least one processor, may cause the first device to perform operations, the operations including: obtaining configuration information related to a dedicated resource pool; obtaining configuration information related to a public resource pool; measuring a side link (SL) received signal strength indicator (RSSI) for a dedicated resource pool or a public resource pool over a channel busy rate (CBR) measurement window; obtaining an SL CBR based on the measurement; selecting a public resource pool based on the SL CBR; and performing SL positioning reference signal (PRS) transmission within the public resource pool.

[0419] Based on the embodiments of the present disclosure, a processing device suitable for controlling a first device may be provided. For example, the processing device may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, based on the execution of these instructions by the at least one processor, the first device may be caused to perform operations, the operations including: obtaining configuration information related to a dedicated resource pool; obtaining configuration information related to a public resource pool; measuring a side link (SL) received signal strength indicator (RSSI) for a dedicated resource pool or a public resource pool over a channel busy rate (CBR) measurement window; obtaining an SL CBR based on the measurement; selecting a public resource pool based on the SL CBR; and performing SL positioning reference signal (PRS) transmission within the public resource pool.

[0420] Based on an embodiment of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, when executed, the instructions may cause a first device to perform operations including: obtaining configuration information related to a dedicated resource pool; obtaining configuration information related to a public resource pool; measuring a side link (SL) received signal strength indicator (RSSI) for a dedicated resource pool or a public resource pool over a channel busy rate (CBR) measurement window; obtaining a side link (SL) received signal strength indicator (RSSI) based on the measurement; selecting a public resource pool based on the SL CBR; and performing SL positioning reference signal (PRS) transmission within the public resource pool.

[0421] Figure 17 A method for a second device to perform wireless communication according to an embodiment of the present disclosure is illustrated. Figure 17 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0422] Reference Figure 17 In step S1710, the second device may obtain configuration information related to a dedicated resource pool. In step S1720, the second device may obtain configuration information related to a public resource pool. In step S1730, the second device may perform sidelink (SL) positioning reference signal (PRS) reception in the public resource pool. For example, the public resource pool may be selected based on an SL channel busy rate (CBR) associated with the dedicated resource pool or the public resource pool.

[0423] The proposed method can be applied to devices based on various embodiments of the present disclosure. First, the processor 202 of the second device 200 can obtain configuration information related to a dedicated resource pool. In addition, the processor 202 of the second device 200 can obtain configuration information related to a public resource pool. In addition, the processor 202 of the second device 200 can control the transceiver 206 to perform sidelink (SL) positioning reference signal (PRS) reception in the public resource pool. For example, the public resource pool can be selected based on the SL channel busy rate (CBR) associated with the dedicated resource pool or the public resource pool.

[0424] Based on an embodiment of the present disclosure, a second device suitable for performing wireless communication may be provided. For example, the second device may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, based on the execution of these instructions by the at least one processor, the second device may perform operations including: obtaining configuration information related to a dedicated resource pool; obtaining configuration information related to a public resource pool; and performing sidelink (SL) positioning reference signal (PRS) reception in the public resource pool. For example, the public resource pool may be selected based on the SL channel busy rate (CBR) associated with the dedicated resource pool or the public resource pool.

[0425] Based on embodiments of the present disclosure, a processing device suitable for controlling a second device may be provided. For example, the processing device may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, based on the execution of these instructions by the at least one processor, the second device may be caused to perform operations, the operations including: obtaining configuration information related to a dedicated resource pool; obtaining configuration information related to a public resource pool; and performing sidelink (SL) positioning reference signal (PRS) reception in the public resource pool. For example, the public resource pool may be selected based on the SL channel busy rate (CBR) associated with the dedicated resource pool or the public resource pool.

[0426] According to embodiments of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, when executed, the instructions may cause a second device to perform operations including: obtaining configuration information associated with a dedicated resource pool; obtaining configuration information associated with a public resource pool; and performing sidelink (SL) positioning reference signal (PRS) reception within the public resource pool. For example, the public resource pool may be selected based on a SL channel busy rate (CBR) associated with the dedicated resource pool or the public resource pool.

[0427] Based on various embodiments of the present disclosure, by performing SL positioning via a SL resource pool shared with SL communication, the delay required for providing SL positioning services can be minimized, and the efficiency of SL resource usage can be maximized. For example, by performing SL communication and SL positioning on a common resource pool under specific conditions, the problem of increased SL positioning delay caused by the time gap caused by RF switching between the resource pool used for SL communication and the resource pool used for SL positioning can be solved. In addition, for example, by performing SL communication and SL positioning on a common resource pool under specific conditions, the UE can efficiently use SL resources in the SL BWP. In addition, in the case where the UE performs SL communication and SL positioning on a common resource pool, the UE can efficiently perform resource selection for SL communication and resource selection for SL positioning by configuring different criteria for resource selection for SL communication and resource selection for SL positioning.

[0428] Based on various embodiments of the present disclosure, when configuring an SL resource pool for SL PRS transmission for SL positioning and an SL resource pool for transmitting data related to the SL PRS, the SL resource pool can be configured by considering the time interval required for switching between different resource pools, BWPs, or carriers. In addition, when configuring an SL PRS configuration for SL positioning, the SL PRS comb pattern can be configured based on the CP length considering the characteristics of the SL PRS transmission channel.

[0429] Various embodiments of the present disclosure may be combined with each other.

[0430] Hereinafter, devices to which various embodiments of the present disclosure can be applied will be described.

[0431] The various descriptions, functions, processes, proposals, methods and / or operational flows of the present disclosure described herein may be applied to, but not limited to, various fields requiring wireless communication / connection between devices (e.g., 5G).

[0432] Hereinafter, a more detailed description will be given with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise described, the same reference numerals may represent the same or corresponding hardware blocks, software blocks or functional blocks.

[0433] Figure 18 A communication system 1 according to an embodiment of the present disclosure is shown. Figure 18 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0434] refer to Figure 18 , a communication system 1 to which various embodiments of the present disclosure are applied includes a wireless device, a base station (BS), and a network. Herein, a wireless device refers to a device that performs communication using a radio access technology (RAT) (e.g., 5G New RAT (NR) or Long Term Evolution (LTE)), and may be referred to as a communication / radio / 5G device. The wireless device may include, but is not limited to, a robot 100a, a vehicle (100b-1, 100b-2), an extended reality (XR) device 100c, a handheld device 100d, a home appliance 100e, an Internet of Things (IoT) device 100f, and an artificial intelligence (AI) device / server 400. For example, a vehicle may include a vehicle with a wireless communication function, an autonomous vehicle, and a vehicle capable of performing inter-vehicle communication. Herein, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). XR devices may include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) installed in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance device, a digital signage, a vehicle, a robot, etc. Handheld devices may include smartphones, smart pads, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., notebooks). Home appliances may include TVs, refrigerators, and washing machines. IoT devices may include sensors and smart meters. For example, a BS and a network may be implemented as wireless devices, and a specific wireless device 200a may operate as a BS / network node relative to other wireless devices.

[0435] Here, in addition to LTE, NR, and 6G, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may also include narrowband IoT for low-power communication. In this case, for example, NB-IoT technology may be an example of low-power wide area network (LPWAN) technology and may be implemented as standards such as LTE Cat NB1 and / or LTE Cat NB2, without being limited to the above names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may perform communication based on LTE-M technology. In this case, as an example, LTE-M technology may be an example of LPWAN and may be referred to by various names including enhanced machine type communication (eMTC). For example, LTE-M technology may be implemented as at least any one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE machine type communication, and / or 7) LTE M, without being limited to the above names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may include at least one of Bluetooth, a low-power wide area network (LPWAN), and ZigBee considering low-power communication, and is not limited to the above names. As an example, ZigBee technology can generate a personal area network (PAN) related to low / low-power digital communication based on various standards including IEEE 802.15.4, and may be referred to by various names.

[0436] Wireless devices 100a to 100f can be connected to a network 300 via a BS 200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can be connected to an AI server 400 via the network 300. The network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although wireless devices 100a to 100f can communicate with each other via the BS 200 / network 300, wireless devices 100a to 100f can perform direct communication (e.g., sidelink communication) with each other without going through the BS / network. For example, vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). IoT devices (e.g., sensors) can perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0437] Wireless communication / connection 150a, 150b, or 150c may be established between wireless devices 100a to 100f / BS 200 or BS 200 / BS 200. Here, the wireless communication / connection may be established via various RATs (e.g., 5G NR), such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication), or inter-BS communication (e.g., relay, integrated access backhaul (IAB)). The wireless device and the BS / wireless device may transmit / receive radio signals to / from each other via the wireless communication / connections 150a and 150b. For example, the wireless communication / connections 150a and 150b may transmit / receive signals via various physical channels. To this end, various configuration information configuration processes, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and at least a portion of the resource allocation process for transmitting / receiving radio signals may be performed based on various proposals of the present disclosure.

[0438] Figure 19 A wireless device according to an embodiment of the present disclosure is shown. Figure 19 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0439] refer to Figure 19 , the first wireless device 100 and the second wireless device 200 can transmit radio signals through various RATs (e.g., LTE and NR). Herein, {the first wireless device 100 and the second wireless device 200} may correspond to Figure 18 {wireless device 100x and BS200} and / or {wireless device 100x and wireless device 100x} in.

[0440] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may additionally include one or more transceivers 106 and / or one or more antennas 108. The processor(s) 102 may control the memory(s) 104 and / or the transceiver(s) 106, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processor(s) 102 may process information in the memory(s) 104 to generate first information / signals, and then transmit a radio signal including the first information / signals through the transceiver(s) 106. The processor(s) 102 may receive a radio signal including second information / signals through the transceiver 106, and then store information obtained by processing the second information / signals in the memory(s) 104. The memory(s) 104 may be connected to the processor(s) 102 and may store various information related to the operation of the processor(s) 102. For example, the memory(s) 104 may store software code including commands for executing part or all of the processing controlled by the processor(s) 102 or for performing the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. Here, the processor(s) 102 and the memory(s) 104 may be part of a communication modem / circuitry / chip designed to implement a RAT (e.g., LTE or NR). The transceiver(s) 106 may be connected to the processor(s) 102 and transmit and / or receive radio signals via the antenna(s) 108. Each transceiver 106 may include a transmitter and / or a receiver. The transceiver(s) 106 may be interchangeably used with the radio frequency (RF) unit(s). In the present disclosure, a wireless device may represent a communication modem / circuitry / chip.

[0441] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may also include one or more transceivers 206 and / or one or more antennas 208. The processor(s) 202 may control the memory(s) 204 and / or the transceiver(s) 206, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processor(s) 202 may process information in the memory(s) 204 to generate third information / signals, and then transmit a radio signal including the third information / signals through the transceiver(s) 206. The processor(s) 202 may receive a radio signal including fourth information / signals through the transceiver(s) 106, and then store information obtained by processing the fourth information / signals in the memory(s) 204. Memory(s) 204 may be connected to processor(s) 202 and may store various information related to the operation of processor(s) 202. For example, memory(s) 204 may store software code including commands for executing part or all of the processing controlled by processor(s) 202 or for performing the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. Here, processor(s) 202 and memory(s) 204 may be part of a communication modem / circuitry / chip designed to implement a RAT (e.g., LTE or NR). Transceiver(s) 206 may be connected to processor(s) 202 and transmit and / or receive radio signals via antenna(s) 208. Each transceiver 206 may include a transmitter and / or a receiver. Transceiver(s) 206 may be used interchangeably with RF unit(s). In this disclosure, a wireless device may represent a communication modem / circuitry / chip.

[0442] The hardware elements of the wireless devices 100 and 200 will be described in more detail below. One or more protocol layers may be implemented by, but are not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more protocol data units (PDUs) and / or one or more service data units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. One or more processors 102 and 202 may generate a signal (e.g., a baseband signal) including a PDU, SDU, message, control information, data, or information according to the description, functions, procedures, proposals, methods, and / or operational procedures disclosed in this document, and provide the generated signal to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive a signal (e.g., a baseband signal) from one or more transceivers 106 and 206, and obtain the PDU, SDU, message, control information, data, or information according to the description, functions, procedures, proposals, methods, and / or operational procedures disclosed in this document.

[0443] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be included in one or more processors 102 and 202 or stored in one or more memories 104 and 204, thereby being driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods and / or operational flows disclosed in this document may be implemented using software or firmware in the form of codes, commands and / or command sets.

[0444] One or more memories 104 and 204 can be connected to one or more processors 102 and 202 and can store various types of data, signals, messages, information, programs, codes, instructions, and / or commands. One or more memories 104 and 204 can be composed of read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drive, registers, cash memory, computer-readable storage media, and / or combinations thereof. One or more memories 104 and 204 can be located internally and / or externally to one or more processors 102 and 202. One or more memories 104 and 204 can be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0445] One or more transceivers 106 and 206 may transmit user data, control information, and / or radio signals / channels described in the methods and / or operational flows of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information, and / or radio signals / channels described in the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and may transmit and receive radio signals. For example, one or more processors 102 and 202 may control the one or more transceivers 106 and 206 to transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may control the one or more transceivers 106 and 206 to receive user data, control information, or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document through one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert received radio signals / channels, etc. from RF band signals to baseband signals so as to process the received user data, control information, radio signals / channels, etc. using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert user data, control information, radio signals / channels, etc. processed using one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more of the transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0446] Figure 20 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown. Figure 20 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0447] refer to Figure 20 , the signal processing circuit 1000 may include a scrambler 1010, a modulator 1020, a layer mapper 1030, a precoder 1040, a resource mapper 1050 and a signal generator 1060. Figure 20 operations / functions, not limited to Figure 19The processor (102, 202) and / or transceiver (106, 206) of Figure 19 The processor (102, 202) and / or transceiver (106, 206) are implemented Figure 20 For example, you can Figure 19 Alternatively, the processor (102, 202) can implement blocks 1010 to 1060. Figure 19 The processor (102, 202) implements blocks 1010 to 1050 and can be implemented by Figure 19 The transceiver (106, 206) is used to implement block 1060.

[0448] Can be passed Figure 20 Signal processing circuit 1000 converts a codeword into a radio signal. Herein, a codeword is a sequence of coded bits for an information block. An information block may include a transport block (e.g., a UL-SCH transport block, a DL-SCH transport block). Radio signals may be transmitted via various physical channels (e.g., PUSCH and PDSCH).

[0449] Specifically, the codeword can be converted into a scrambled bit sequence by the scrambler 1010. The scrambling sequence for scrambling can be generated based on an initial value, and the initial value can include the ID information of the wireless device. The scrambled bit sequence can be modulated into a modulation symbol sequence by the modulator 1020. The modulation scheme may include pi / 2-binary phase shift keying (pi / 2-BPSK), m-phase shift keying (m-PSK), and m-quadrature amplitude modulation (m-QAM). The complex modulation symbol sequence can be mapped to one or more transmission layers by the layer mapper 1030. The modulation symbol of each transmission layer can be mapped (precoded) to (one or more) corresponding antenna ports by the precoder 1040. The output z of the precoder 1040 can be obtained by multiplying the output y of the layer mapper 1030 with the N*M precoding matrix W. Here, N is the number of antenna ports and M is the number of transmission layers. The precoder 1040 can perform precoding after performing transform precoding (e.g., DFT) on the complex modulation symbols. Alternatively, the precoder 1040 may perform precoding without performing transform precoding.

[0450] The resource mapper 1050 can map the modulation symbols of each antenna port to time-frequency resources. The time-frequency resources may include multiple symbols in the time domain (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) and multiple subcarriers in the frequency domain. The signal generator 1060 can generate a radio signal from the mapped modulation symbols, and the generated radio signal can be sent to other devices through each antenna. To this end, the signal generator 1060 may include an inverse fast Fourier transform (IFFT) module, a cyclic prefix (CP) inserter, a digital-to-analog converter (DAC), and an up-converter.

[0451] Can Figure 20 The signal processing process for the signal received in the wireless device is configured in a manner opposite to the signal processing process (1010-1060) of the wireless device. Figure 19 100, 200) can receive a radio signal from the outside through an antenna port / transceiver. The received radio signal can be converted into a baseband signal by a signal restorer. To this end, the signal restorer may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module. Next, the baseband signal can be restored to a codeword through a resource demapping process, a post-coding process, a demodulation processor, and a descrambling process. The codeword can be restored to the original information block by decoding. Therefore, a signal processing circuit (not shown) for receiving a signal may include a signal restorer, a resource demapper, a post-coding process, a demodulator, a descrambler, and a decoder.

[0452] Figure 21 Another example of a wireless device according to an embodiment of the present disclosure is shown. The wireless device can be implemented in various forms according to use cases / services (refer to Figure 18 ). Figure 21 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0453] refer to Figure 21 , the wireless device (100, 200) may correspond to Figure 19 The wireless devices (100, 200) may be configured by various elements, components, units / portions and / or modules. For example, each of the wireless devices (100, 200) may include a communication unit 110, a control unit 120, a storage unit 130 and additional components 140. The communication unit may include a communication circuit 112 and (one or more) transceivers 114. For example, the communication circuit 112 may include Figure 19 One or more processors (102, 202) and / or one or more memories (104, 204). For example, the transceiver(s) 114 may include Figure 19The control unit 120 is electrically connected to the communication unit 110, the memory 130, and the additional components 140, and controls the overall operation of the wireless device. For example, the control unit 120 can control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit 130. The control unit 120 can transmit information stored in the memory unit 130 to the outside (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface, or store information received from the outside (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface in the memory unit 130.

[0454] The additional component 140 may be configured in various ways depending on the type of wireless device. For example, the additional component 140 may include at least one of a power unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device may be implemented in the following forms without limitation: a robot ( Figure 18 100a), vehicles ( Figure 18 100b-1 and 100b-2), XR devices ( Figure 18 100c), handheld device ( Figure 18 100d), household appliances ( Figure 18 100e), IoT devices ( Figure 18 100f), digital broadcast terminal, hologram device, public safety device, MTC device, medical device, fintech device (or financial device), security device, climate / environmental device, AI server / device ( Figure 18 400), BS( Figure 18 200), network nodes, etc. Depending on the use case / service, the wireless device can be used in a mobile or fixed place.

[0455] exist Figure 21In the embodiment of the present invention, the various elements, components, units / parts and / or modules in the wireless device (100, 200) can all be connected to each other through a wired interface, or at least part of them can be connected wirelessly through the communication unit 110. For example, in each of the wireless devices (100, 200), the control unit 120 and the communication unit 110 can be connected through a wired interface, and the control unit 120 and the first unit (e.g., 130, 140) can be connected wirelessly through the communication unit 110. Each element, component, unit / part and / or module in the wireless device (100, 200) can also include one or more elements. For example, the control unit 120 can be constructed by a collection of one or more processors. As an example, the control unit 120 can be constructed by a collection of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing unit and a memory control processor. As another example, the memory 130 can be constructed by a random access memory (RAM), a dynamic RAM (DRAM), a read-only memory (ROM), a flash memory, a volatile memory, a non-volatile memory and / or a combination thereof.

[0456] Hereinafter, the implementation will be described in detail with reference to the accompanying drawings. Figure 21 .

[0457] Figure 22 A handheld device according to an embodiment of the present disclosure is shown. The handheld device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch or smart glasses), or a portable computer (e.g., a notebook). The handheld device may be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT). Figure 22 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0458] refer to Figure 22 , the handheld device 100 may include an antenna unit (108), a communication unit 110, a control unit 120, a storage unit 130, a power supply unit 140a, an interface unit 140b and an I / O unit 140c. The antenna unit 108 may be configured as a part of the communication unit 110. Blocks 110 to 130 / 140a to 140c correspond to Figure 21 Frame 110 to 130 / 140.

[0459] The communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from other wireless devices or a base station. The control unit 120 can perform various operations by controlling the components of the handheld device 100. The control unit 120 may include an application processor (AP). The storage unit 130 can store data / parameters / programs / codes / commands required to operate the handheld device 100. The storage unit 130 can store input / output data / information. The power supply unit 140a can supply power to the handheld device 100 and may include wired / wireless charging circuits, a battery, etc. The interface unit 140b can support connection between the handheld device 100 and other external devices. The interface unit 140b may include various ports for connecting to external devices (e.g., an audio I / O port and a video I / O port). The I / O unit 140c can input or output user-input video information / signals, audio information / signals, data, and / or information. The I / O unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and / or a haptic module.

[0460] For example, in the case of data communication, the I / O unit 140c can obtain information / signals (e.g., touch, text, voice, image, or video) input by the user, and the obtained information / signals can be stored in the storage unit 130. The communication unit 110 can convert the information / signals stored in the memory into radio signals and transmit the converted radio signals directly to other wireless devices or to the BS. The communication unit 110 can receive radio signals from other wireless devices or BSs and then restore the received radio signals to the original information / signals. The restored information / signals can be stored in the storage unit 130 and can be output as various types (e.g., text, voice, image, video, or tactile) through the I / O unit 140.

[0461] Figure 23 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. The vehicle or autonomous vehicle can be implemented by a mobile robot, a car, a train, a manned / unmanned aerial vehicle (AV), a ship, etc. Figure 23 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0462] refer to Figure 23 , the vehicle or autonomous vehicle 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a drive unit 140a, a power supply unit 140b, a sensor unit 140c, and an autonomous driving unit 140d. The antenna unit 108 may be configured as part of the communication unit 110. Blocks 110 / 130 / 140a to 140d correspond to Figure 21 Box 110 / 130 / 140.

[0463] The communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from external devices such as other vehicles, base stations (e.g., gNBs and roadside units), and servers. The control unit 120 can perform various operations by controlling components of the vehicle or autonomous vehicle 100. The control unit 120 may include an electronic control unit (ECU). The drive unit 140a can cause the vehicle or autonomous vehicle 100 to travel on the road. The drive unit 140a may include an engine, a motor, a transmission system, wheels, brakes, a steering system, etc. The power supply unit 140b can supply power to the vehicle or autonomous vehicle 100 and may include wired / wireless charging circuits, a battery, etc. The sensor unit 140c can acquire vehicle status, external environment information, user information, etc. The sensor unit 140c may include an inertial measurement unit (IMU), a collision sensor, a wheel sensor, a speed sensor, a slope sensor, a weight sensor, a heading sensor, a location module, a vehicle forward / backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, a lighting sensor, a pedal position sensor, etc. The autonomous driving unit 140d can implement technology for maintaining the lane in which the vehicle is traveling, technology for automatically adjusting the speed (for example, adaptive cruise control), technology for autonomously driving along a determined path, technology for driving by automatically setting a path with a destination set, etc.

[0464] For example, the communication unit 110 can receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d can generate an autonomous driving path and driving plan based on the acquired data. The control unit 120 can control the drive unit 140a so that the vehicle or autonomous vehicle 100 can move along the autonomous driving path according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit 110 can aperiodically / periodically acquire the latest traffic information data from the external server and acquire surrounding traffic information data from neighboring vehicles. During autonomous driving, the sensor unit 140c can acquire vehicle status and / or surrounding environment information. The autonomous driving unit 140d can update the autonomous driving path and driving plan based on the newly acquired data / information. The communication unit 110 can transmit information about the vehicle's location, autonomous driving path, and / or driving plan to the external server. The external server can use AI technology, etc. based on the information collected from the vehicle or autonomous vehicle to predict traffic information data and provide the predicted traffic information data to the vehicle or autonomous vehicle.

[0465] The claims in this specification can be combined in various ways. For example, the technical features in the method claims of this specification can be combined to be implemented or performed in a device, and the technical features in the device claims can be combined to be implemented or performed in a method. In addition, the technical features in (one or more) method claims and (one or more) device claims can be combined to be implemented or performed in a device. In addition, the technical features in (one or more) method claims and (one or more) device claims can be combined to be implemented or performed in a method.

Claims

1. A method for performing wireless communication by a first device, the method comprising: Obtain configuration information related to a dedicated resource pool; Obtain configuration information related to the public resource pool; measuring a side link (SL) received signal strength indicator (RSSI) for the dedicated resource pool or the common resource pool over a channel busy rate (CBR) measurement window; obtaining a SL CBR based on the measurement; selecting the common resource pool based on the SL CBR; and SL positioning reference signal (PRS) transmission is performed within the common resource pool.

2. The method according to claim 1, wherein The public resource pool is a resource pool used for SL communication and SL positioning, and the dedicated resource pool is a resource pool used only for SL positioning.

3. The method according to claim 1, wherein The public resource pool is selected based on the SL CBR associated with the dedicated resource pool being greater than or equal to a threshold.

4. The method according to claim 1, wherein The common resource pool is selected based on the SL CBR associated with the common resource pool being less than or equal to a threshold.

5. The method according to claim 1, wherein The SL CBR includes a first SLCBR associated with the dedicated resource pool and a second SL CBR associated with the public resource pool, and The public resource pool is selected based on the first SL CBR exceeding the second SL CBR by at least a threshold.

6. The method according to claim 1, wherein The public resource pool is selected based on that the time delay required for SL positioning is less than or equal to a threshold.

7. The method according to claim 1, wherein The public resource pool is selected based on the first device not having the capability of performing SL positioning or SL communication based on the dedicated resource pool and the public resource pool.

8. The method according to claim 1, wherein The public resource pool is selected based on that the first device does not support radio frequency (RF) switching between the dedicated resource pool and the public resource pool.

9. The method according to claim 1, wherein The common resource pool is selected based on a priority value associated with the SL PRS transmission being greater than or equal to a threshold.

10. The method according to claim 1, wherein A first RSRP threshold for selecting resources related to SL positioning in the common resource pool and a second RSRP threshold for selecting resources related to SL communication in the common resource pool are configured for the first device.

11. The method according to claim 1, wherein The first device is configured with a first RSRP increment value for resource selection related to SL positioning in the common resource pool and a second RSRP increment value for resource selection related to SL communication in the common resource pool.

12. The method according to claim 1, wherein The first device is configured with a priority related to SL positioning in the public resource pool and a priority related to SL communication in the public resource pool.

13. The method according to claim 1, further comprising: Determine candidate resources in the public resource pool that are relevant to the SL PRS transmission, Wherein, based on the overlap between multiple resources reserved for SL communication and SL PRS resources used for SL positioning, whether to exclude the SL PRS resources from the candidate resources is determined based on at least one of the average value of RSRP values related to the multiple resources or the overlap rate between the multiple resources and the SL PRS resources.

14. A first device adapted to perform wireless communication, the first device comprising: at least one transceiver; at least one processor; as well as at least one memory connected to the at least one processor and storing instructions, wherein the instructions, upon being executed by the at least one processor, cause the first device to perform operations, the operations comprising: Obtain configuration information related to a dedicated resource pool; Obtain configuration information related to the public resource pool; measuring a side link (SL) received signal strength indicator (RSSI) for the dedicated resource pool or the common resource pool over a channel busy rate (CBR) measurement window; obtaining a SL CBR based on the measurement; selecting the common resource pool based on the SL CBR; and SL positioning reference signal (PRS) transmission is performed within the common resource pool.

15. A processing device adapted to control a first device, the processing device comprising: at least one processor; as well as at least one memory connected to the at least one processor and storing instructions, wherein the instructions, upon being executed by the at least one processor, cause the first device to perform operations, the operations comprising: Obtain configuration information related to a dedicated resource pool; Obtain configuration information related to the public resource pool; measuring a side link (SL) received signal strength indicator (RSSI) for the dedicated resource pool or the common resource pool over a channel busy rate (CBR) measurement window; obtaining a SL CBR based on the measurement; selecting the common resource pool based on the SL CBR; and SL positioning reference signal (PRS) transmission is performed within the common resource pool.

16. A non-transitory computer-readable storage medium storing instructions that, when executed, cause a first device to perform operations comprising: Obtain configuration information related to a dedicated resource pool; Obtain configuration information related to the public resource pool; measuring a side link (SL) received signal strength indicator (RSSI) for the dedicated resource pool or the common resource pool over a channel busy rate (CBR) measurement window; obtaining a SL CBR based on the measurement; selecting the common resource pool based on the SL CBR; and SL positioning reference signal (PRS) transmission is performed within the common resource pool.

17. A method for performing wireless communication by a second device, the method comprising: Obtain configuration information related to a dedicated resource pool; Obtain configuration information related to the public resource pool; as well as performing sidelink (SL) positioning reference signal (PRS) reception within the common resource pool, The public resource pool is selected based on an SL channel busy rate (CBR) associated with the dedicated resource pool or the public resource pool.

18. A second device adapted to perform wireless communication, the second device comprising: at least one transceiver; at least one processor; as well as at least one memory connected to the at least one processor and storing instructions, wherein the instructions, upon being executed by the at least one processor, cause the second device to perform operations, the operations comprising: Obtain configuration information related to a dedicated resource pool; Obtaining configuration information associated with the common resource pool; and performing sidelink (SL) positioning reference signal (PRS) reception within the common resource pool, The public resource pool is selected based on an SL channel busy rate (CBR) associated with the dedicated resource pool or the public resource pool.

19. A processing device adapted to control a second device, the processing device comprising: at least one processor; as well as at least one memory connected to the at least one processor and storing instructions, wherein the instructions, upon being executed by the at least one processor, cause the second device to perform operations, the operations comprising: Obtain configuration information related to a dedicated resource pool; Obtaining configuration information associated with the common resource pool; and performing sidelink (SL) positioning reference signal (PRS) reception within the common resource pool, The public resource pool is selected based on an SL channel busy rate (CBR) associated with the dedicated resource pool or the public resource pool.

20. A non-transitory computer-readable storage medium storing instructions that, when executed, cause a second device to perform operations comprising: Obtain configuration information related to a dedicated resource pool; Obtain configuration information related to the public resource pool; as well as performing sidelink (SL) positioning reference signal (PRS) reception within the common resource pool, The public resource pool is selected based on an SL channel busy rate (CBR) associated with the dedicated resource pool or the public resource pool.

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