SL PRS and SL PRS CCH Multiplexing Method and Apparatus for SL Positioning

Abstract

A method for a first device to perform wireless communication and a device supporting the same are provided. The method includes obtaining SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, transmitting an SL PRS CCH (control channel) to a second device, and transmitting the SL PRS to the second device. For example, the position of a resource related to the SL PRS CCH and the position of a resource related to the SL PRS are determined in association with each other.

Description

Technical Field

[0001] The present disclosure relates to a wireless communication system.

Background Art

[0002] Sidelink (SL) means a communication method in which a direct link is established between terminals (User Equipment, UE), and voice or data is directly exchanged between the terminals without passing through a base station (Base Station, BS). SL is considered as one solution to solve the burden on the base station due to rapidly increasing data traffic. V2X (vehicle-to-everything) means a communication technology in which information is exchanged with other vehicles, pedestrians, and things with built-in infrastructure via wired / wireless communication. V2X can be classified into four types such as V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure), V2N (vehicle-to-network), and V2P (vehicle-to-pedestrian). V2X communication can be provided via the PC5 interface and / or the Uu interface.

[0003] On the other hand, as more communication devices require a larger communication capacity, there is a growing need for mobile broadband communication that is improved compared to existing radio access technologies (RAT). As a result, communication systems considering services or terminals sensitive to reliability and latency have been discussed, and next-generation wireless connection technologies considering improved mobile broadband communication, massive MTC (Machine Type Communication), URLLC (Ultra-Reliable and Low Latency Communication), etc. can be referred to as new radio access technology (new radio access technology) or NR (new radio).

SUMMARY OF THE INVENTION

MEANS FOR SOLVING THE PROBLEM

[0004] In one embodiment, a method for a first device to perform wireless communication is provided. The method includes obtaining SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, transmitting an SL PRS CCH (control channel) to a second device, and transmitting an SL PRS to the second device. For example, the position of the resource associated with the SL PRS CCH and the position of the resource associated with the SL PRS are determined in association with each other.

[0005] In one embodiment, a first device configured to perform wireless communication is provided. The first device includes at least one transceiver, at least one processor, and at least one memory coupled to the at least one processor and storing instruction words, and the instruction words are, based on being executed by the at least one processor, for the first device to obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, transmit an SL PRS CCH (control channel) to a second device, and transmit an SL PRS to the second device, and the position of the resource associated with the SL PRS CCH and the position of the resource associated with the SL PRS are determined in association with each other.

[0006] In one embodiment, a processing device configured to control a first device is provided. The processing device includes at least one processor; and at least one memory coupled to the at least one processor for storing instruction words, where the instruction words, based on being executed by the at least one processor, are to obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource for the first device, to transmit an SL PRS CCH (control channel) to a second device, and to transmit an SL PRS to the second device. For example, the position of the resource associated with the SL PRS CCH and the position of the resource associated with the SL PRS are determined in association with each other.

[0007] In one embodiment, a non-transitory computer-readable storage medium recording instruction words is provided. The instruction words, when executed, are to obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource for the first device, to transmit an SL PRS CCH (control channel) to a second device, and to transmit an SL PRS to the second device. For example, the position of the resource associated with the SL PRS CCH and the position of the resource associated with the SL PRS are determined in association with each other.

Brief Description of the Drawings

[0008]

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DETAILED DESCRIPTION OF THE INVENTION

[0009] In this specification, "A or B" can mean "only A", "only B", or "both A and B". Also, in this specification, "A or B" can be interpreted as "A and / or B". For example, in this specification, "A, B or C" can mean "only A", "only B", "only C", or "any combination of A, B and C".

[0010] The slash ( / ) and comma used in this specification can mean "and / or". For example, "A / B" can mean "A and / or B". Thus, "A / B" can mean "only A", "only B", or "both A and B". For example, "A, B, C" can mean "A, B or C".

[0011] In this specification, "at least one of A and B" can mean "only A", "only B", or "both A and B". Also, in this specification, expressions such as "at least one of A or B" and "at least one of A and / or B" can be interpreted in the same way as "at least one of A and B".

[0012] Also, in this specification, "at least one of A, B, and C" can mean "only A", "only B", "only C", or "any combination of A, B, and C". Also, "at least one of A, B, or C" and "at least one of A, B, and / or C" can mean "at least one of A, B, and C".

[0013] Also, the parentheses used in this specification can mean "for example". Specifically, when expressed as "control information (PDCCH)", "PDCCH" is proposed as an example of "control information". Also, the "control information" in this specification is not limited to "PDCCH", and "PDCCH" is proposed as an example of "control information". Also, when expressed as "control information (i.e., PDCCH)", "PDCCH" is proposed as an example of "control information".

[0014] In the following description, "when, if, in case of" may be replaced with "based on".

[0015] In this specification, the technical features individually described within one drawing can be embodied individually or simultaneously.

[0016] In this specification, a higher layer parameter can be a parameter that is set for a terminal, set in advance, or predefined. For example, a base station or a network can send a higher layer parameter to a terminal. For example, the higher layer parameter can be transmitted via RRC (radio resource control) signaling or MAC (medium access control) signaling.

[0017] The following technologies can be used in various wireless communication systems such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), SC-FDMA (single carrier frequency division multiple access), etc. CDMA can be implemented with wireless technologies such as UTRA (universal terrestrial radio access) and CDMA2000. TDMA can be implemented with wireless technologies such as GSM (global system for mobile communications) / GPRS (general packet radio service) / EDGE (enhanced data rates for GSM evolution). OFDMA can be implemented with wireless technologies such as IEEE (institute of electrical and electronics engineers) 802.11 (Wi-Fi), IEEE802.16 (WiMAX), IEEE802-20, E-UTRA (evolved UTRA), etc. IEEE802.16m is an evolution of IEEE802.16e and provides backward compatibility with systems based on IEEE802.16e. UTRA is part of UMTS (universal mobile telecommunications system). 3GPP (registered trademark) (3rd generation partnership project) LTE (long term evolution) is part of E-UMTS (evolved UMTS) that uses E-UTRA (evolved-UMTS terrestrial radio access), adopts OFDMA in the downlink, and adopts SC-FDMA in the uplink. LTE-A (advanced) is an evolution of 3GPP LTE.

[0018] 5G NR is a successor technology to LTE-A and is a new Clean-slate form of mobile communication system with characteristics such as high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, including low-frequency bands below 1 GHz, intermediate-frequency bands from 1 GHz to 10 GHz, and high-frequency (millimeter-wave) bands above 24 GHz.

[0019] The 6G (wireless communication) system aims to achieve (i) very high data speeds per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) reduced energy consumption for battery-free IoT devices, (vi) ultra-high-reliability connections, (vii) connected intelligence with machine learning capabilities, etc. The vision of the 6G system consists of four aspects such as intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity, and the 6G system can meet the requirements as shown in Table 1 below. That is, Table 1 shows an example of the requirements of the 6G system.

[0020]

Table 1

[0021] The 6G system has key factors such as eMBB (Enhanced mobile broadband), URLLC (Ultra-reliable low latency communications), mMTC (massive machine-type communication), AI integrated communication, Tactile internet, High throughput, High network capacity, High energy efficiency, Low backhaul and access network congestion, and Enhanced data security.

[0022] Figure 1 shows a communication structure that can be provided in a 6G system according to an embodiment of the present disclosure. The example of Figure 1 can be combined with various embodiments of the present disclosure.

[0023] The 6G system is expected to have 50 times higher simultaneous wireless communication connectivity than the 5G wireless communication system. URLLC, a key feature of 5G, can become a more major technology by providing an end-to-end latency of less than 1 ms in 6G communication. The 6G system may be far superior in volume spectral efficiency compared to the frequently used area spectral efficiency. The 6G system can provide very long battery life and advanced battery technology for energy harvesting, and mobile devices in the 6G system do not need to be charged separately. The characteristics of the new network in 6G are as follows.

[0024] - Satellites integrated network: 6G is expected to be integrated with satellites to provide a global mobile population. Integrating terrestrial, satellite, and public networks in one wireless communication system is very important in 6G.

[0025] - Connected intelligence: Different from previous-generation wireless communication systems, 6G is innovative and updated as the evolution of wireless from "connected things" to "connected intelligence". AI can be applied at each step of the communication procedure (or each step of signal processing described below).

[0026] - Seamless integration of wireless information and energy transfer: The 6G wireless network transmits power to charge the batteries of devices such as smartphones and sensors. Therefore, wireless information and energy transmission (WIET) may be integrated.

[0027] - Ubiquitous super 3D connectivity: Connectivity to the networks and core network functions of drones and very low Earth orbit satellites creates super 3D connectivity in 6G ubiquity.

[0028] Among the characteristics of the new 6G network as described above, several common requirements are as follows.

[0029] - Small cell networks: The idea of small cell networks was introduced in cellular systems to improve the quality of received signals as a result of improving throughput, energy efficiency, and spectral efficiency. As a result, small cell networks are an essential characteristic of 5G and communication systems beyond 5G (5GB) and above. Therefore, the 6G communication system also adopts the characteristics of small cell networks.

[0030] - Ultra-dense heterogeneous network: Ultra-dense heterogeneous networks may become another important characteristic of 6G communication systems. Multi-layer networks composed of heterogeneous networks improve the overall QoS and reduce costs.

[0031] - High-capacity backhaul: The backhaul connection is characterized as a high-capacity backhaul network to support high-capacity traffic. High-speed optical fiber and free space optical communication (FSO) systems can be possible solutions to that problem.

[0032] - Radar technology integrated with mobile technology: Precise localization (or location-based services) via communication is one of the functions of 6G wireless communication systems. Therefore, the radar system may be integrated with the 6G network.

[0033] - Softwarization and virtualization: Softwarization and virtualization are two important functions that form the basis of the design process in 5G networks to ensure flexibility, reconfigurability, and programmability. Also, billions of devices can be shared in a shared physical infrastructure.

[0034] In the following, the core implementation technologies of the 6G system will be described.

[0035] - Artificial Intelligence: It is the most important for the 6G system, and the newly introduced technology is AI. AI was not involved in the 4G system. The 5G system supports AI partially or very limitedly. However, the 6G system is fully supported by AI for full automation. The development of machine learning creates a more intelligent network for real-time communication in 6G. Introducing AI into communication simplifies and improves real-time data transmission. AI can use numerous analyses to determine how complex target operations are executed. That is, AI can enhance efficiency and reduce processing delay. Time-consuming operations such as handover, network selection, and resource scheduling can be executed immediately by using AI. AI can also play an important role in M2M, machine-to-human, and human-to-machine communications. Also, AI enables rapid communication in BCI (Brain Computer Interface). The AI-based communication system is supported by meta-materials, intelligent structures, intelligent networks, intelligent devices, intelligent cognitive radios, self-sustaining wireless networks, and machine learning.

[0036] - THz Communication (Terahertz Communication): The data transmission rate can be increased by increasing the bandwidth. This can be achieved by applying advanced large-scale MIMO technology using a wide bandwidth for sub-THz communication. THz waves, also known as radiation below millimeter, typically exhibit a frequency band between 0.1 THz and 10 THz with wavelengths in the range of 0.03 mm - 3 mm. The 100 GHz - 300 GHz band range (Sub THz band) is regarded as the main part of the THz band for cellular communication. Adding the Sub-THz band to the mmWave band increases the 6G cellular communication capacity. Among the defined THz bands, 300 GHz - 3 THz is in the far-infrared (IR) frequency band. The 300 GHz - 3 THz band is part of the wideband but at the boundary of the wideband and right behind the RF band. Therefore, this 300 GHz - 3 THz band is similar to RF. Figure 2 shows the electromagnetic spectrum according to an embodiment of the present disclosure. The example in Figure 2 can be combined with various examples of the present disclosure. The main characteristics of THz communication include (i) a bandwidth that can be used in a wide range to support a very high data transmission rate, and (ii) high path loss occurring at high frequencies (highly directional antennas are essential). The narrow beamwidth generated by highly directional antennas reduces interference. The small wavelength of THz signals allows a larger number of antenna elements to be integrated into devices and BSs operating in this band. Advanced adaptive array technologies can be used to overcome range limitations through this.

[0037] - Large-scale MIMO Technology (Large-scale MIMO)

[0038] - Hologram Beam Forming (HBF, Hologram Beam forming)

[0039] - Optical Wireless Technology

[0040] - Free Space Optical Transmission Backhaul Network (FSO Backhaul Network)

[0041] - Non-Terrestrial Networks (NTN)

[0042] - Quantum Communication

[0043] - Cell-free Communication

[0044] - Integration of Wireless Information and Power Transmission

[0045] - Integration of Wireless Communication and Sensing

[0046] - Integrated Access and Backhaul Network

[0047] - Big data Analysis

[0048] - Reconfigurable Intelligent Surface

[0049] - Metaverse

[0050] - Block-chain

[0051] - Unmanned Aerial Vehicle (UAV): UAV (Unmanned Aerial Vehicle) or drone may become an important element in 6G wireless communication. In most cases, high-speed data wireless connection is provided using UAV technology. The BS entity is installed on the UAV to provide cellular connection. UAVs have certain features not seen in fixed BS infrastructure, such as easy deployment, strong line-of-sight links, and a controlled degree of mobility. During emergencies such as natural disasters, the deployment of terrestrial communication infrastructure may not be economically feasible and may sometimes be unable to provide services in a volatile environment. UAVs can easily handle such situations. UAVs may become a new paradigm in the field of wireless communication. This technology facilitates the three basic requirements of wireless networks, namely eMBB, URLLC, and mMTC. UAVs can also support various purposes, such as improving network connectivity, fire detection, disaster emergency services, security and surveillance, pollution monitoring, parking monitoring, accident monitoring, etc. Therefore, UAV technology is recognized as one of the most important technologies for 6G communication.

[0052] - Autonomous Driving: For perfect autonomous driving, it is necessary to notify each other of dangerous situations through vehicle-to-vehicle communication or confirm information such as parking information positions and signal change times through communication between the vehicle and infrastructure such as parking lots and signals. V2X (Vehicle to Everything), which is a key element in building an autonomous driving infrastructure, is a technology that communicates and shares with various elements on the road for a vehicle to drive autonomously, such as wireless communication between vehicles (V2V, Vehicle to vehicle) and wireless communication between the vehicle and infrastructure (V2I, Vehicle to Infrastructure). In order to maximize the performance of autonomous driving and ensure high safety, fast transmission speed and low-latency technology are essential. Furthermore, in the future, autonomous driving will need to intervene actively in the operation of the vehicle beyond the level of transmitting warning and guidance messages to the driver and directly control the vehicle in dangerous situations, which will result in an enormous amount of information to be transmitted and received. It is expected that 6G will maximize autonomous driving with a faster transmission speed and lower latency than 5G.

[0053] For clarity of explanation, the description is centered on 5G NR, but the technical idea according to an embodiment of the present disclosure is not limited thereto. Various examples of the present disclosure can also be applied to a 6G communication system.

[0054] FIG. 3 shows the structure of an NR system according to an embodiment of the present disclosure. The embodiment of FIG. 3 can be combined with various embodiments of the present disclosure.

[0055] Referring to FIG. 3, the NG-RAN (Next Generation - Radio Access Network) can include a base station 20 that provides protocol termination for the user plane and the control plane to the terminal 10. For example, the base station 20 can include a gNB (next generation - NodeB) and / or an eNB (evolved - NodeB). For example, the terminal 10 can be fixed or have mobility and is also called by other terms such as MS (Mobile Station), UT (User Terminal), SS (Subscriber Station), MT (Mobile Terminal), Wireless Device, etc. For example, the base station is a fixed station that communicates with the terminal 10 and is also called by other terms such as BTS (Base Transceiver System), Access Point, etc.

[0056] The embodiment of FIG. 3 illustrates the case where only gNBs are included. The base stations 20 can be connected to each other via the Xn interface. The base station 20 can be connected to the 5th generation core network (5G Core Network: 5GC) via the NG interface. More specifically, the base station 20 can be connected to the AMF (access and mobility management function) 30 via the NG - C interface and can be connected to the UPF (user plane function) 30 via the NG - U interface.

[0057] The layers of the Radio Interface Protocol between the terminal and the network can be classified into L1 (the first layer), L2 (the second layer), and L3 (the third layer) based on the lower three layers of the well-known Open System Interconnection (OSI) reference model in communication systems. Among these, the physical layer belonging to the first layer provides an Information Transfer Service using a Physical Channel, and the RRC (Radio Resource Control) layer located in the third layer performs the role of controlling radio resources between the terminal and the network. To this end, the RRC layer exchanges RRC messages between the terminal and the base station.

[0058] Figure 4 shows a radio protocol architecture according to an embodiment of the present disclosure. The embodiment of Figure 4 can be combined with various embodiments of the present disclosure. Specifically, (a) of Figure 4 shows a radio protocol stack of the user plane for Uu communication, and (b) of Figure 4 shows a radio protocol stack of the control plane for Uu communication. (c) of Figure 4 shows a radio protocol stack of the user plane for SL communication, and (d) of Figure 4 shows a radio protocol stack of the control plane for SL communication.

[0059] Referring to Figure 4, the physical layer provides an information transfer service to the upper layer using a physical channel. The physical layer is connected to the upper layer MAC (Medium Access Control) layer via a transport channel. Data moves between the MAC layer and the physical layer via the transport channel. The transport channel is classified according to how data is transmitted and what characteristics it has via the radio interface.

[0060] Between different physical layers, that is, between the physical layers of the transmitter and the receiver, data moves through a physical channel. The physical channel can be modulated by the OFDM (Orthogonal Frequency Division Multiplexing) method and utilizes time and frequency as radio resources.

[0061] The MAC layer provides services to the upper-layer RLC (radio link control) layer via logical channels. The MAC layer provides a mapping function from multiple logical channels to multiple transport channels. Also, the MAC layer provides a logical channel multiplexing function by mapping from multiple logical channels to a single transport channel. The MAC sublayer provides a data transfer service on the logical channel.

[0062] The RLC layer performs concatenation, segmentation, and reassembly of RLC SDUs (Service Data Units). To ensure the various QoS (Quality of Service) requirements of radio bearers (RBs), the RLC layer provides three operating modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). AM RLC provides error correction via ARQ (automatic repeat request).

[0063] The RRC (Radio Resource Control) layer is defined only in the control plane. The RRC layer is responsible for controlling logical channels, transport channels, and physical channels in relation to the configuration, re-configuration, and release of radio bearers. An RB means a logical path provided by the first layer (physical layer or PHY layer) and the second layer (MAC layer, RLC layer, PDCP (Packet Data Convergence Protocol) layer, SDAP (Service Data Adaptation Protocol) layer) for data transmission between the terminal and the network.

[0064] The functions of the PDCP layer in the user plane include the transfer of user data, header compression, and ciphering. The functions of the PDCP layer in the control plane include the transfer of control plane data and ciphering / integrity protection.

[0065] The SDAP (Service Data Adaptation Protocol) layer is defined only in the user plane. The SDAP layer performs mappings between QoS flows and data radio bearers, marking of QoS flow identifiers (IDs) in downlink and uplink packets, etc.

[0066] When an RB is configured, it means the process of defining the characteristics of radio protocol layers and channels to provide a specific service and setting each specific parameter and operation method. Also, an RB is divided into two types: SRB (Signaling Radio Bearer) and DRB (Data Radio Bearer). The SRB is used as a path for transmitting RRC messages in the control plane, and the DRB is used as a path for transmitting user data in the user plane.

[0067] When an RRC connection is established between the RRC layer of the terminal and the RRC layer of the base station, the terminal enters the RRC_CONNECTED state; otherwise, it enters the RRC_IDLE state. In the case of NR, an additional RRC_INACTIVE state is defined, and a terminal in the RRC_INACTIVE state can maintain its connection with the core network while releasing its connection with the base station.

[0068] Downlink transport channels for transmitting data from the network to the terminal include the BCH (Broadcast Channel) for transmitting system information and the downlink SCH (Shared Channel) for transmitting user traffic and control messages other than that. For downlink multicast or broadcast service traffic or control messages, they can be transmitted via the downlink SCH or via a separate downlink MCH (Multicast Channel). On the other hand, uplink transport channels for transmitting data from the terminal to the network include the RACH (Random Access Channel) for transmitting initial control messages and the uplink SCH (Shared Channel) for transmitting user traffic and control messages other than that.

[0069] Above the transport channels, logical channels mapped to the transport channels include the BCCH (Broadcast Control Channel), PCCH (Paging Control Channel), CCCH (Common Control Channel), MCCH (Multicast Control Channel), MTCH (Multicast Traffic Channel), etc.

[0070] FIG. 5 shows the structure of an NR radio frame according to an embodiment of the present disclosure. The embodiment of FIG. 5 can be combined with various embodiments of the present disclosure.

[0071] Referring to FIG. 5, in NR, radio frames can be used for uplink and downlink transmissions. The radio frame has a length of 10 ms and can be defined in two 5 ms half-frames (HF). A half-frame can include five 1 ms subframes (SF). A subframe can be divided into one or more slots, and the number of slots in a subframe can be determined by the subcarrier spacing (SCS). Each slot can include 12 or 14 OFDM(A) symbols by means of a cyclic prefix (CP).

[0072] When normal CP is used, each slot can include 14 symbols. When extended CP is used, each slot can include 12 symbols. Here, the symbol can include an OFDM symbol (or a CP-OFDM symbol), a SC-FDMA (Single Carrier-FDMA) symbol (or a DFT-s-OFDM (Discrete Fourier Transform-spread-OFDM) symbol).

[0073] Table 2 below exemplifies the number of symbols per slot (N slot symb ), the number of slots per frame (N frame,u slot ), and the number of slots per subframe (N subframe,u slot ) according to the SCS setting (u) when normal CP or extended CP is used.

[0074]

Table 2

[0075] In the NR system, the OFDM(A) numerology (e.g., SCS, CP length, etc.) can be set to be different among a plurality of cells merged into one terminal. Thereby, the (absolute time) intervals of time resources (e.g., subframes, slots or TTIs) (collectively referred to as TUs (Time Units) for convenience) composed of the same number of symbols can be set to be different among the merged cells.

[0076] In NR, a number of numerologies or SCSs for supporting various 5G services can be supported. For example, when the SCS is 15 kHz, a wide area in a traditional cellular band can be supported, and when the SCS is 30 kHz / 60 kHz, a dense-urban, lower latency, and wider carrier bandwidth can be supported. When the SCS is 60 kHz or higher, a bandwidth greater than 24.25 GHz can be supported to overcome phase noise.

[0077] The NR frequency band can be defined in two types of frequency ranges. The two types of frequency ranges are FR1 and FR2. The numerical values of the frequency ranges can be changed. For example, the two types of frequency ranges are as shown in Table 3 below. Among the frequency ranges used in the NR system, FR1 can mean "sub 6GHz range", FR2 can mean "above 6GHz range", and can be called millimeter wave (mmW).

[0078]

Table 3

[0079] As described above, the numerical values of the frequency range of the NR system can be changed. For example, FR1 can include a band from 410 MHz to 7125 MHz as shown in Table 4 below. That is, FR1 can include a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher. For example, the frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher included within FR1 can include an unlicensed band. The unlicensed band can be used for various applications, for example, it can be used for communication for vehicles (e.g., autonomous driving).

[0080] [Table 4]

[0081] FIG. 6 shows the slot structure of an NR frame according to an embodiment of the present disclosure. The embodiment of FIG. 6 can be combined with various embodiments of the present disclosure.

[0082] Referring to FIG. 6, a slot includes a plurality of symbols in the time domain. For example, in the case of normal CP, one slot can include 14 symbols, and in the case of extended CP, one slot can include 12 symbols. Or, in the case of normal CP, one slot can include 7 symbols, and in the case of extended CP, one slot can include 6 symbols.

[0083] The carrier wave includes a plurality of sub-carrier waves in the frequency domain. An RB (Resource Block) can be defined as a plurality (e.g., 12) of consecutive sub-carrier waves in the frequency domain. A BWP (Bandwidth Part) can be defined as a plurality of consecutive (P)RBs ((Physical) Resource Blocks) in the frequency domain and can correspond to one numerology (e.g., SCS, CP length, etc.). A carrier wave can include a maximum of N (e.g., 5) BWPs. Data communication can be performed via the activated BWP. Each element is called a resource element (RE) in the resource grid, and one complex symbol can be mapped to it.

[0084] Hereinafter, the BWP (Bandwidth Part) and the carrier will be described.

[0085] A BWP (Bandwidth Part) is a continuous set of PRBs (physical resource blocks) with a given numerology. A PRB can be selected from a continuous subset of CRBs (common resource blocks) for a given numerology on a given carrier wave.

[0086] For example, the BWP is at least one of an active BWP, an initial BWP, and / or a default BWP. For example, the terminal may not monitor the downlink radio link quality in a DL BWP other than the active DL BWP on the PCell (primary cell). For example, the terminal does not receive a PDCCH, a PDSCH (physical downlink shared channel), or a CSI-RS (reference signal) (except for RRM) outside the active DL BWP. For example, the terminal does not trigger a CSI (Channel State Information) report for an inactive DL BWP. For example, the terminal does not transmit a PUCCH (physical uplink control channel) or a PUSCH (physical uplink shared channel) outside the active UL BWP. For example, when it is downlink, the initial BWP is given as a set of consecutive RBs for the RMSI (remaining minimum system information) CORESET (control resource set) (set by the PBCH (physical broadcast channel)). For example, when it is uplink, the initial BWP is given by the SIB (system information block) for the random access procedure. For example, the default BWP is set by the upper layer. For example, the initial value of the default BWP is the initial DL BWP. For energy saving, when the terminal cannot detect DCI for a certain period, the terminal can switch the active BWP of the terminal to the default BWP.

[0087] On one hand, the BWP can be defined for the SL. The same SL BWP can be used for transmission and reception. For example, a transmitting terminal can transmit an SL channel or an SL signal on a specific BWP, and a receiving terminal can receive the SL channel or the SL signal on the said specific BWP. For a licensed carrier, the SL BWP can be defined separately from the Uu BWP, and the SL BWP can have separate configuration signalling from the Uu BWP. For example, a terminal can receive the configuration for the SL BWP from a base station / network. For example, a terminal can receive the configuration for the Uu BWP from a base station / network. The SL BWP can be (pre-)configured for out-of-coverage NR V2X terminals and RRC_IDLE terminals within a carrier. For a terminal in the RRC_CONNECTED mode, at least one SL BWP can be activated within a carrier.

[0088] FIG. 7 shows an example of a BWP according to an embodiment of the present disclosure. The embodiment of FIG. 7 can be combined with various embodiments of the present disclosure. In the embodiment of FIG. 7, it is assumed that there are three BWPs.

[0089] Referring to FIG. 7, a CRB (common resource block) is a carrier resource block numbered from one side end to the other side end of a carrier band. And a PRB is a resource block numbered within each BWP. Point A can indicate a common reference point for a resource block grid.

[0090] The BWP is based on point A, the offset from point A (N start BWP ) and the bandwidth (N size BWP) can be set by. For example, point A is the external reference point of the PRB of the carrier where sub-carrier 0 of all numerologies (for example, all numerologies supported by the network with the corresponding carrier) is aligned. For example, the offset is the PRB interval between the lowest sub-carrier and point A for a given numerology. For example, the bandwidth is the number of PRBs for a given numerology.

[0091] Hereinafter, V2X or SL communication will be described.

[0092] SLSS (Sidelink Synchronization Signal) is a sequence specific to SL, and can include PSSS (Primary Sidelink Synchronization Signal) and SSSS (Secondary Sidelink Synchronization Signal). The PSSS can be referred to as S-PSS (Sidelink Primary Synchronization Signal), and the SSSS can be referred to as S-SSS (Sidelink Secondary Synchronization Signal). For example, length-127 M-sequences can be used for S-PSS, and length-127 Gold sequences can be used for S-SSS. For example, a terminal can detect the first signal using S-PSS and acquire synchronization. For example, a terminal can acquire detailed synchronization and detect the synchronization signal ID using S-PSS and S-SSS.

[0093] The PSBCH (Physical Sidelink Broadcast Channel) is a (broadcast) channel through which the basic (system) information that a terminal should know first before SL signal transmission and reception is transmitted. For example, the basic information includes information related to SLSS, duplex mode (DM), TDD UL / DL (Time Division Duplex Uplink / Downlink) configuration, resource pool related information, the type of application related to SLSS, subframe offset, broadcast information, etc. For example, for the evaluation of PSBCH performance, in NR V2X, the payload size of the PSBCH is 56 bits including a 24-bit CRC (Cyclic Redundancy Check).

[0094] S-PSS, S-SSS, and PSBCH can be included in a block format that supports periodic transmission (e.g., an SLSS (Synchronization Signal) / PSBCH block, hereinafter referred to as an S-SSB (Sidelink-Synchronization Signal Block)). The S-SSB can have the same numerology (i.e., SCS and CP length) as the PSCCH (Physical Sidelink Control Channel) / PSSCH (Physical Sidelink Shared Channel) within a carrier, and the transmission bandwidth is within a (predetermined) SL BWP (Sidelink Bandwidth Part). For example, the bandwidth of the S-SSB is 11 RBs (Resource Blocks). For example, the PSBCH spans 11 RBs. And the frequency position of the S-SSB can be (predetermined). Therefore, the terminal does not need to perform hypothesis detection in terms of frequency to find the S-SSB in a carrier.

[0095] FIG. 8 shows the procedure for a terminal to perform V2X or SL communication in the transmission mode according to an embodiment of the present disclosure. The embodiment of FIG. 8 can be combined with various embodiments of the present disclosure. In various embodiments of the present disclosure, the transmission mode can be referred to as a mode or a resource allocation mode. Hereinafter, for convenience of explanation, in LTE, the transmission mode can be referred to as the LTE transmission mode, and in NR, the transmission mode can be referred to as the NR resource allocation mode.

[0096] For example, FIG. 8(a) shows the terminal operation related to LTE transmission mode 1 or LTE transmission mode 3. Or, for example, FIG. 8(a) shows the terminal operation related to NR resource allocation mode 1. For example, LTE transmission mode 1 can be applied to general SL communication, and LTE transmission mode 3 can be applied to V2X communication.

[0097] For example, FIG. 8(b) shows the terminal operation related to LTE transmission mode 2 or LTE transmission mode 4. Or, for example, FIG. 8(b) shows the terminal operation related to NR resource allocation mode 2.

[0098] Referring to FIG. 8(a), in LTE transmission mode 1, LTE transmission mode 3, or NR resource allocation mode 1, the base station can schedule the SL resources used by the terminal for SL transmission. For example, in step S800, the base station can transmit the information related to the SL resources and / or the information related to the UL resources to the first terminal. For example, the UL resources can include PUCCH resources and / or PUSCH resources. For example, the UL resources can be the resources for reporting the SL HARQ feedback to the base station.

[0099] For example, the first terminal can receive information related to DG (dynamic grant) resources and / or information related to CG (configured grant) resources from the base station. For example, the CG resource can include a CG type 1 resource or a CG type 2 resource. In this specification, the DG resource can be a resource that the base station sets / allocates to the first terminal via DCI (downlink control information). In this specification, the CG resource can be a (periodic) resource that the base station sets / allocates to the first terminal via DCI and / or an RRC message. For example, in the case of a CG type 1 resource, the base station can send an RRC message including information related to the CG resource to the first terminal. For example, in the case of a CG type 2 resource, the base station can send an RRC message including information related to the CG resource to the first terminal, and the base station can send DCI related to the activation or release of the CG resource to the first terminal.

[0100] In step S810, the first terminal can transmit PSCCH (e.g., SCI (Sidelink Control Information) or 1st-stage SCI) to the second terminal based on the resource scheduling. In step S820, the first terminal can transmit PSSCH (e.g., 2nd-stage SCI, MAC PDU, data, etc.) related to the PSCCH to the second terminal. In step S830, the first terminal can receive PSFCH related to PSCCH / PSSCH from the second terminal. For example, HARQ feedback information (e.g., NACK information or ACK information) can be received from the second terminal via the PSFCH. In step S840, the first terminal can transmit / report the HARQ feedback information to the base station via PUCCH or PUSCH. For example, the HARQ feedback information reported to the base station can be information generated based on the HARQ feedback information received by the first terminal from the second terminal. For example, the HARQ feedback information reported to the base station can be information generated by the first terminal based on a pre-set rule. For example, the DCI can be DCI for SL scheduling. For example, the format of the DCI can be DCI format 3_0 or DCI format 3_1.

[0101] Next, an example of DCI format 3_0 will be described.

[0102] DCI format 3_0 is used for scheduling NR PSCCH and NR PSSCH in one cell.

[0103] The following information is transmitted via DCI format 3_0 with CRC scrambled by SL-RNTI or SL-CS-RNTI.

[0104] - Resource Pool Index - ceiling(log2 I) bits, where I is the number of resource pools for transmission set by the upper layer parameter sl-TxPoolScheduling.

[0105] - Time Gap - 3 bits determined by the upper layer parameter sl-DCI-ToSL-Trans

[0106] - HARQ Process Number - 4 bits

[0107] - New Data Indicator - 1 bit

[0108] - Lowest Index of Subchannel Allocation for Initial Transmission - ceiling(log2(NSLsubChannel)) bits

[0109] - SCI Format 1-A Fields: Frequency Resource Allocation, Time Resource Allocation

[0110] - PSFCH-to-HARQ Feedback Timing Indicator - ceiling(log2 Nfb_timing) bits, where Nfb_timing is the number of entries of the upper layer parameter sl-PSFCH-ToPUCCH.

[0111] - PUCCH Resource Indicator - 3 bits

[0112] - Configuration Index - 0 bits if the UE is not configured to monitor DCI Format 3_0 with a CRC scrambled by SL-CS-RNTI. Otherwise, it is 3 bits. If the UE is configured to monitor DCI Format 3_0 with a CRC scrambled by SL-CS-RNTI, this field is reserved for DCI Format 3_0 with a CRC scrambled by SL-RNTI.

[0113] - Counter side link allocation index - 2 bits, 2 bits if the UE has pdsch-HARQ-ACK-Codebook = dynamic set, 2 bits if the UE has pdsch-HARQ-ACK-Codebook = semi-static set

[0114] - Padding bits, if necessary

[0115] Referring to FIG. 8(b), in LTE transmission mode 2, LTE transmission mode 4 or NR resource allocation mode 2, the terminal can determine the SL transmission resource within the SL resource set by the base station / network or the preset SL resource. For example, the set SL resource or the preset SL resource can be a resource pool. For example, the terminal can autonomously select or schedule resources for SL transmission. For example, the terminal can select resources by itself within the set resource pool and perform SL communication. For example, the terminal can perform sensing and (re)selection procedures of resources and select resources by itself within the selection window. For example, the sensing can be performed in units of subchannels. For example, in step S810, the first terminal that has selected resources by itself within the resource pool can use the resources to transmit PSCCH (for example, SCI (Sidelink Control Information) or 1st-stage SCI) to the second terminal. In step S820, the first terminal can transmit the PSSCH (for example, 2nd-stage SCI, MAC PDU, data, etc.) related to the PSCCH to the second terminal. In step S830, the first terminal can receive the PSFCH related to the PSCCH / PSSCH from the second terminal.

[0116] Referring to FIG. 8(a) or (b), for example, the first terminal can send an SCI to the second terminal on the PSCCH. Alternatively, for example, the first terminal can send two consecutive SCIs (e.g., 2-stage SCI) to the second terminal on the PSCCH and / or PSSCH. In this case, the second terminal can decode two consecutive SCIs (e.g., 2-stage SCI) to receive the PSSCH from the first terminal. In this specification, the SCI transmitted on the PSCCH can be referred to as 1st SCI, the first SCI, 1st-stage SCI, or 1st-stage SCI format, and the SCI transmitted on the PSSCH can be referred to as 2nd SCI, the second SCI, 2nd-stage SCI, or 2nd-stage SCI format. For example, the 1st-stage SCI format can include SCI format 1-A, and the 2nd-stage SCI format can include SCI format 2-A and / or SCI format 2-B.

[0117] Hereinafter, an example of SCI format 1-A will be described.

[0118] SCI format 1-A is used for scheduling the PSSCH and the 2nd stage SCI on the PSSCH.

[0119] The following information is transmitted using SCI format 1-A.

[0120] - Priority - 3 bits

[0121] - Frequency resource allocation - ceiling(log2(NSLsubChannel(NSLsubChannel + 1) / 2)) bits when the value of the upper layer parameter sl-MaxNumPerReserve is set to 2. Otherwise, when the value of the upper layer parameter sl-MaxNumPerReserve is set to 3, ceiling log2(NSLsubChannel(NSLsubChannel+1)(2NSLsubChannel+1) / 6) bits

[0122] - Time resource allocation - 5 bits when the value of the upper layer parameter sl-MaxNumPerReserve is set to 2. Otherwise, when the value of the upper layer parameter sl-MaxNumPerReserve is set to 3, 9 bits

[0123] - Resource reservation cycle - ceiling(log2 Nrsv_period) bits. Here, Nrsv_period is the number of entries in the upper layer parameter sl-ResourceReservePeriodList when the upper layer parameter sl-MultiReserveResource is set. Otherwise, 0 bits

[0124] - DMRS pattern - ceiling(log2 Npattern) bits, where Npattern is the number of DMRS patterns set by the upper layer parameter sl-PSSCH-DMRS-TimePatternList

[0125] - 2nd-stage SCI format - 2 bits as defined in Table 5

[0126] - Beta_offset indicator - 2 bits as provided by the upper layer parameter sl-BetaOffsets2ndSCI

[0127] - Number of DMRS ports - 1 bit as defined in Table 6

[0128] - Modulation and coding scheme - 5 bits

[0129] - Additional MCS table indicator - 1 bit if one MCS table is configured by the upper layer parameter sl-Additional-MCS-Table. 2 bits if two MCS tables are configured by the upper layer parameter sl-Additional-MCS-Table. 0 bits otherwise

[0130] - PSFCH overhead indicator - 1 bit if the upper layer parameter sl-PSFCH-Period = 2 or 4. 0 bits otherwise

[0131] - Reserved bits - The number of bits determined by the upper layer parameter sl-NumReservedBits, and the value is set to 0

[0132]

Table 5

[0133]

Table 6

[0134] The following describes an example of SCI format 2-A

[0135] In HARQ operation, when the HARQ-ACK information contains ACK or NACK, or when the HARQ-ACK information contains only NACK, or when there is no feedback of HARQ-ACK information, SCI format 2-A is used for PSSCH decoding

[0136] The following information is transmitted via the SCI format

[0137] - HARQ process number - 4 bits

[0138] - New data indicator - 1 bit

[0139] - Redundancy version - 2 bits

[0140] - Source ID - 8 bits

[0141] - Destination ID - 16 bits

[0142] - HARQ feedback enable / disable indicator - 1 bit

[0143] - Cast type indicator - 2 bits as defined in Table 7

[0144] - CSI request - 1 bit

[0145]

Table 7

[0146] The following describes an example of SCI format 2-B.

[0147] In HARQ operation, when the HARQ-ACK information contains only NACK or there is no feedback of HARQ-ACK information, SCI format 2-B is used for decoding the PSSCH.

[0148] The following information is transmitted via SCI format 2-B.

[0149] - HARQ process number - 4 bits

[0150] - New data indicator - 1 bit

[0151] - Redundancy version - 2 bits

[0152] - Source ID - 8 bits

[0153] - Destination ID - 16 bits

[0154] - HARQ feedback enable / disable indicator - 1 bit

[0155] - Zone ID - 12 bits

[0156] - Communication range requirement - 4 bits determined by the upper layer parameter sl-ZoneConfigMCR-Index

[0157] Referring to Fig. 8(a) or (b), at step S830, the first terminal can receive the PSFCH. For example, the first terminal and the second terminal can determine the PSFCH resource, and the second terminal can use the PSFCH resource to send HARQ feedback to the first terminal.

[0158] Referring to Fig. 8(a), at step S840, the first terminal can send SL HARQ feedback to the base station via the PUCCH and / or PUSCH.

[0159] Hereinafter, the HARQ (Hybrid Automatic Repeat Request) procedure will be described.

[0160] For example, SL HARQ feedback can be enabled for unicast. In this case, in non-CBG (non-Code Block Group) operation, when the receiving terminal decodes the PSCCH targeted at the receiving terminal and the receiving terminal successfully decodes the transmission block associated with the PSCCH, the receiving terminal can generate a HARQ-ACK. Then, the receiving terminal can send the HARQ-ACK to the transmitting terminal. On the other hand, after the receiving terminal decodes the PSCCH targeted at the receiving terminal, if the receiving terminal cannot successfully decode the transmission block associated with the PSCCH, the receiving terminal can generate a HARQ-NACK. Then, the receiving terminal can send the HARQ-NACK to the transmitting terminal.

[0161] For example, SL HARQ feedback can be enabled for groupcast. For example, in non-CBG operation, two HARQ feedback options can be supported for groupcast.

[0162] (1) Groupcast Option 1: After the receiving terminal decodes the PSCCH targeted at the receiving terminal, if the receiving terminal fails to decode the transmission block associated with the PSCCH, the receiving terminal can send a HARQ-NACK to the transmitting terminal via the PSFCH. On the other hand, when the receiving terminal decodes the PSCCH targeted at the receiving terminal and the receiving terminal successfully decodes the transmission block associated with the PSCCH, the receiving terminal does not send a HARQ-ACK to the transmitting terminal.

[0163] (2) Group Cast Option 2: After the receiving terminal decodes the PSCCH targeting the receiving terminal, if the receiving terminal fails to decode the transmission block associated with the PSCCH, the receiving terminal can transmit a HARQ-NACK to the transmitting terminal via the PSFCH. And when the receiving terminal decodes the PSCCH targeting the receiving terminal and the receiving terminal successfully decodes the transmission block associated with the PSCCH, the receiving terminal can transmit a HARQ-ACK to the transmitting terminal via the PSFCH.

[0164] For example, when Group Cast Option 1 is used for SL HARQ feedback, all terminals performing group cast communication can share the PSFCH resource. For example, terminals belonging to the same group can use the same PSFCH resource to transmit HARQ feedback.

[0165] For example, when Group Cast Option 2 is used for SL HARQ feedback, each terminal performing group cast communication can use different PSFCH resources for transmitting HARQ feedback. For example, terminals belonging to the same group can use different PSFCH resources to transmit HARQ feedback.

[0166] In this specification, HARQ-ACK can be referred to as ACK, ACK information, or positive-ACK information, and HARQ-NACK can be referred to as NACK, NACK information, or negative-ACK information.

[0167] Hereinafter, positioning will be described.

[0168] FIG. 9 shows an example of the architecture in a 5G system capable of positioning a UE connected to an NG-RAN (Next Generation-Radio Access Network) or an E-UTRAN according to an embodiment of the present disclosure. The embodiment of FIG. 9 can be combined with various embodiments of the present disclosure.

[0169] As shown in FIG. 9, the AMF can receive a request for a location service related to a specific target UE from another entity such as a GMLC (Gateway Mobile Location Center), or the AMF itself can decide to initiate a location service on behalf of the specific target UE. Then, the AMF can send a location service request to the LMF (Location Management Function). The LMF that has received the location service request can process the location service request and return a processing result including the estimated location of the UE, etc., to the AMF. On the other hand, when a location service request is received from another entity such as a GMLC other than the AMF, the AMF can transmit the processing result received from the LMF to the other entity.

[0170] The ng-eNB (new generation evolved-NB) and the gNB are network elements of the NG-RAN that can provide measurement results for location estimation, measure radio signals for the target UE, and transmit the resulting values to the LMF. Also, the ng-eNB can control some TPs (Transmission Points) such as remote radio heads or a PRS dedicated TP that supports a PRS (Positioning Reference Signal) base beacon system for E-UTRA.

[0171] The LMF is connected to an E-SMLC (Enhanced Serving Mobile Location Centre), and the E-SMLC enables the LMF to be connectable to the E-UTRAN. For example, the E-SMLC utilizes the downlink measurements obtained by the target UE via signals transmitted from the PRS dedicated TP within the eNB and / or the E-UTRAN, and supports OTDOA (Observed Time Difference Of Arrival), which is one of the positioning methods of the E-UTRAN.

[0172] On the other hand, the LMF can be connected to an SLP (SUPL Location Platform). The LMF can support and manage different positioning services for the target UE. The LMF can interact with the serving ng-eNB or serving gNB for the target UE to obtain the UE's position measurements. For the positioning of the target UE, the LMF determines the positioning method based on, for example, the LCS (Location Service) client type, the required QoS (Quality of Service), UE positioning capabilities, gNB positioning capabilities, and ng-eNB positioning capabilities, and can apply such a positioning method to the serving gNB and / or the serving ng-eNB. Then, the LMF can determine the estimated position value for the target UE and additional information such as the accuracy of the position estimation and speed. The SLP is a SUPL (Secure User Plane Location) entity responsible for positioning via the user plane.

[0173] The UE can measure downlink signals via sources such as NG-RAN and E-UTRAN, different Global Navigation Satellite System (GNSS), Terrestrial Beacon System (TBS), Wireless Local Access Network (WLAN) connection points, Bluetooth (R) beacons, and the UE barometric pressure sensor. The UE can include an LCS application and can connect to the LCS application via communication with the network to which the UE is connected or via other applications included in the UE. The LCS application can include the measurement and calculation functions necessary to determine the position of the UE. For example, the UE can include an independent positioning function such as the Global Positioning System (GPS) and can report the position of the UE independently of the NG-RAN transmission. Such independently obtained positioning information can also be utilized as auxiliary information for the positioning information obtained from the network.

[0174] Figure 10 shows an example implementation of a network for measuring the position of a UE according to an embodiment of the present disclosure. The embodiment of Figure 10 can be combined with various embodiments of the present disclosure.

[0175] When the UE is in the CM-IDLE (Connection Management-IDLE) state and the AMF receives a positioning service request, the AMF can establish a signaling connection with the UE and request a network trigger service to allocate a specific serving gNB or ng-eNB. Such an operation process is omitted in Figure 10. That is, in Figure 10, it can be assumed that the UE is in the connected mode. However, due to reasons such as signaling and data inactivity, the signaling connection can be released by the NG-RAN during the progress of the positioning process.

[0176] Referring to FIG. 10, the operation process of the network for specifically measuring the position of the UE will be described. In step 1a, a 5GC entity such as the GMLC can request a positioning service from the serving AMF to measure the position of the target UE. However, even if the GMLC does not request a positioning service, in step 1b, the serving AMF can also determine that a positioning service for measuring the position of the target UE is required. For example, in order to measure the position of the UE for an emergency call, the serving AMF can also determine to directly perform a positioning service.

[0177] After that, in step 2, the AMF sends a positioning service request to the LMF. In step 3a, the LMF can start location procedures for obtaining positioning data or positioning assistance data together with the serving ng-eNB and the serving gNB. Additionally, in step 3b, the LMF can start location procedures for downlink positioning with the UE. For example, the LMF can send positioning assistance data (Assistance data defined in 3GPP TS 36.355) to the UE or obtain an estimated position value or a positioning measurement value. On the other hand, step 3b can be additionally performed after step 3a, or can be performed instead of step 3a.

[0178] In step 4, the LMF can provide a positioning service response to the AMF. Also, the positioning service response may include information on whether the positioning of the UE was successful and the estimated position value of the UE. After that, if the procedure in FIG. 10 is started by step 1a, the AMF can transmit the positioning service response to a 5GC entity such as the GMLC. If the procedure in FIG. 10 is started by step 1b, the AMF can use the positioning service response for providing a positioning service related to an emergency call or the like.

[0179] Figure 11 shows an example of a protocol layer used to support LPP (LTE Positioning Protocol) message transmission between the LMF and the UE. The example of Figure 11 can be combined with various examples of the present disclosure.

[0180] The LPP PDU can be transmitted via the NAS PDU between the AMF and the UE. As shown in Figure 11, LPP can be terminated between a target device (e.g., UE in the control plane or SET (SUPL Enabled Terminal) in the user plane) and a positioning server (e.g., LMF in the control plane or SLP in the user plane). The LPP message can be transmitted in the form of a transparent PDU via an intermediate network interface using appropriate protocols such as NGAP (NG Application Protocol) via the NG-C (NG-Control Plane) interface, NAS / RRC via the LTE-Uu and NR-Uu interfaces. The LPP protocol enables positioning for NR and LTE using various positioning methods.

[0181] For example, via the LPP protocol, the target device and the positioning server can exchange capability information, exchange auxiliary data for positioning, and / or exchange location information with each other. Also, error information exchange and / or interruption indication of the LPP procedure can be performed via the LPP message.

[0182] Figure 12 shows an example of a protocol layer used to support NRPPa (NR Positioning Protocol A) PDU transmission between the LMF and the NG-RAN node. The example of Figure 12 can be combined with various examples of the present disclosure.

[0183] NRPPa can be used for information exchange between the NG-RAN node and the LMF. Specifically, NRPPa can exchange an E-CID (Enhanced-Cell ID) for measurements sent from the ng-eNB to the LMF, data for assisting the OTDOA positioning method, a Cell-ID for the NR Cell ID positioning method, and a Cell position ID, etc. The AMF can route the NRPPa PDU via the NG-C interface based on the routing ID of the associated LMF even without information about the associated NRPPa transaction.

[0184] The procedures of the NRPPa protocol for location and data collection can be classified into two types. The first type is the UE associated procedure for transmitting information about a specific UE (e.g., location measurement information, etc.), and the second type is the non UE associated procedure for transmitting information applicable to the NG-RAN node and the associated TP (e.g., gNB / ng-eNB / TP timing information, etc.). The two types of procedures can be supported independently or simultaneously.

[0185] On the other hand, the positioning methods supported by the NG-RAN may include GNSS, OTDOA, E-CID (enhanced cell ID), barometric sensor positioning, WLAN positioning, Bluetooth (registered trademark) positioning, and TBS (terrestrial beacon system), UTDOA (Uplink Time Difference of Arrival), etc. Among the above positioning methods, the position of the UE can be measured using any one of the positioning methods, or the position of the UE can also be measured using two or more positioning methods.

[0186] (1) OTDOA (Observed Time Difference Of Arrival)

[0187] FIG. 13 is a diagram for explaining an OTDOA (Observed Time Difference Of Arrival) positioning method according to an embodiment of the present disclosure. The embodiment of FIG. 13 can be combined with various embodiments of the present disclosure.

[0188] The OTDOA positioning method utilizes the measurement timing of downlink signals received by the UE from a plurality of TPs including an eNB, an ng-eNB, and a PRS dedicated TP. The UE measures the timing of the received downlink signals using the position assistance data received from the position server. Then, the position of the UE can be determined based on such measurement results and the geographical coordinates of adjacent TPs.

[0189] The UE connected to the gNB can request a measurement gap for OTDOA measurement from the TP. If the UE cannot recognize the SFN (Single Frequency Network) for at least one TP in the OTDOA assistance data, the UE can use an autonomous gap to obtain the SFN of the OTDOA reference cell before requesting a measurement gap for RSTD (Reference Signal Time Difference) measurement.

[0190] Here, RSTD can be defined based on the smallest relative time difference between the boundaries of two subframes received from the reference cell and the measurement cell, respectively. That is, RSTD can be calculated based on the relative time difference between the start time of the subframe of the reference cell closest to the start time of the subframe received from the measurement cell and the start time of the subframe of the reference cell closest to the start time of the subframe received from the measurement cell. On the other hand, the reference cell can be selected by the UE.

[0191] For accurate OTDOA measurement, it is necessary to measure the TOA (time of arrival) of signals received from three or more TPs or base stations that are geographically dispersed. For example, measure the TOA for each of TP1, TP2, and TP3, calculate the RSTD for TP1 - TP2, the RSTD for TP2 - TP3, and the RSTD for TP3 - TP1 based on the three TOAs, determine geometric hyperbolas based on this, and the intersection point of such hyperbolas can be estimated as the position of the UE. At this time, where accuracy and / or uncertainty can occur for each TOA measurement, the estimated UE position can also be known as a specific range due to measurement uncertainty.

[0192] For example, the RSTD for two TPs can be calculated based on Equation 1.

[0193] [Number]

[0194] Here, c is the speed of light, {xt, yt} are the (unknown) coordinates of the target UE, {xi, yi} are the coordinates of the (known) TP, and {x1, y1} can be the coordinates of the reference TP (or another TP). Here, (Ti - T1) is the transmission time offset between two TPs and can be referred to as "Real Time Differences" (RTDs), and ni, n1 can represent values related to the UE TOA measurement error.

[0195] (2) E - CID (Enhanced Cell ID)

[0196] In the cell ID (CID) positioning method, the position of the UE can be measured via the geographical information of the serving ng-eNB, serving gNB, and / or serving cell of the UE. For example, the geographical information of the serving ng-eNB, serving gNB, and / or serving cell can be obtained via paging, registration, etc.

[0197] On the other hand, in addition to the CID positioning method, the E-CID positioning method can utilize additional UE measurements and / or NG-RAN radio resources, etc. to improve the UE position estimate. In the E-CID positioning method, a part of the same measurement methods as the measurement control system of the RRC protocol can be used, but generally, no additional measurements are made only for UE position measurement. In other words, in order to measure the position of the UE, another measurement configuration or measurement control message cannot be provided, and it is not expected that the UE will be required to perform additional measurement operations only for position measurement, and the UE can report the measurement values obtained via the generally measurable measurement methods.

[0198] For example, the serving gNB can implement the E-CID positioning method using the E-UTRA measurement values provided by the UE.

[0199] Examples of measurement elements that can be used for E-CID positioning can be as follows.

[0200] - UE measurements: E-UTRA RSRP (Reference Signal Received Power), E-UTRA RSRQ (Reference Signal Received Quality), UE E-UTRA Rx-Tx Time difference, GERAN (GSM EDGE Random Access Network) / WLAN RSSI (Reference Signal Strength Indication), UTRAN CPICH (Common Pilot Channel) RSCP (Received Signal Code Power), UTRAN CPICH Ec / Io

[0201] - E-UTRAN measurements: ng-eNB Rx-Tx Time difference, Timing Advance (TADV), Angle of Arrival (AoA)

[0202] Here, TADV can be classified into Type1 and Type2 as follows.

[0203] TADV Type 1 = (ng-eNB Rx-Tx Time difference) + (UE E-UTRA Rx-Tx Time difference)

[0204] TADV Type2 = ng-eNB Rx-Tx Time difference

[0205] On the one hand, AoA can be used to measure the direction of the UE. AoA can be defined as the estimated angle with respect to the position of the UE in the counterclockwise direction from the base station / TP. At this time, the geographical reference direction can be the north side. The base station / TP can utilize uplink signals such as SRS (Sounding Reference Signal) and / or DMRS (Demodulation Reference Signal) for AoA measurement. Also, the larger the array of the antenna array, the higher the measurement accuracy of AoA. When the antenna array is arranged at the same interval, the signals received from adjacent antenna elements can have a certain phase change (Phase-Rotate).

[0206] (3)UTDOA (Uplink Time Difference of Arrival)

[0207] UTDOA is a method of determining the position of the UE by estimating the arrival time of the SRS. When calculating the estimated SRS arrival time, the serving cell can be used as the reference cell to estimate the position of the UE through the time difference of arrival with other cells (or base stations / TPs). To implement UTDOA, the E-SMLC can instruct the serving cell of the target UE to instruct the target UE to transmit the SRS. Also, the E-SMLC can provide configurations such as the periodic / aperiodic availability of the SRS, bandwidth, and frequency / group / sequence hopping.

[0208] (4)RTT (Round Trip Time)

[0209] RTT is a positioning technology that can measure the distance between two entities even when there is a lack of time synchronization between the target entity and the server entity. If RTT is to be executed with multiple server entities, the distance from each server entity can be measured respectively. Then, when circles are drawn using the distances measured from each server entity, the absolute positioning for the target entity can be executed based on the intersection points of each circle.

[0210] The method of executing RTT between two entities is as follows. Entity #1 can send PRS#1 at t1, and Entity #2 can receive the RRS#1 at t2. After Entity #2 receives the PRS#1, Entity #2 can send PRS#2 at t3, and Entity #1 can receive the PRS#2 at t4. In this case, the distance D between the two entities can be obtained as follows.

[0211] D = c × {(t4 - t1) - (t3 - t2)} / 2 (where c is the speed of light)

[0212] In the case of RTT between a UE and a gNB, the distance between the UE and the gNB can be obtained based on the above formula using the UE Rx-Tx time difference and the gNB Rx-Tx time difference in the following table.

[0213] (5) Double-side RTT

[0214] Double-side RTT is a positioning technology that can measure the distance between two entities even when there is a sampling clock frequency offset between the target entity and the server entity.

[0215] The method of performing double-side RTT between two entities is as follows.

[0216] Double-side RTT is widely used in UWB (ultra-wideband) positioning and can reduce the influence of clock error.

[0217] FIG. 14 is a diagram for explaining double-side RTT (Round Trip Time) according to an embodiment of the present disclosure. The embodiment of FIG. 14 can be combined with various embodiments of the present disclosure.

[0218] On the other hand, the propagation delay T (T^) in FIG. 14 can be estimated by two measurements (e.g., T round1 , T round2 , T reply1 , T reply2 ).

[0219] For example, the propagation delay T (T^) can be calculated based on Equation 2.

[0220]

Equation

[0221] For example, the propagation delay T (T^) can be calculated based on Equation 3.

[0222]

Equation

[0223] And T round1 ×T round2 -T reply1 ×T reply2 can be known to be Equation 4,

[0224]

Number

[0225] Here, Equation 4 is as shown in Equation 5.

[0226]

Number

[0227] Therefore, the propagation delay T(T^) can be estimated as shown in Equation 6.

[0228]

Number

[0229] In this case, for example, the error in the propagation delay estimation due to clock error is as shown in Equation 7.

[0230]

Number

[0231] Here, e UE1 and e UE2 are the clock offsets of UE1 and UE2.

[0232] The propagation delay T(T^) is the estimated propagation delay between UE1 and UE2.

[0233] Table 8 shows an example of RSTD (reference signal time difference). The RSTD in Table 8 can be applied for SL positioning.

[0234] [Table 8]

[0235] Table 9 shows an example of DL PRS RSRP (reference signal received power). The DL PRS RSRP in Table 9 can be applied for SL positioning.

[0236] [Table 9]

[0237] Table 10 shows an example of DL RSTD (relative signal time difference). The DL RSTD in Table 10 can be applied for SL positioning.

[0238] [Table 10]

[0239] Table 11 shows an example of UE Rx-Tx time difference. The UE Rx-Tx time difference in Table 11 can be applied for SL positioning.

[0240] [Table 11]

[0241] Table 12 shows an example of UL RTOA (UL Relative Time of Arrival) (T UL-RTOA )). The UL RTOA in Table 12 can be applied for SL positioning.

[0242]

Table 12

[0243] Table 13 shows an example of the gNB Rx-Tx time difference. The gNB Rx-Tx time difference in Table 13 can be applied for SL positioning.

[0244]

Table 13

[0245] Table 14 shows an example of the UL AoA (Angle of Arrival). The UL AoA in Table 14 can be applied for SL positioning.

[0246]

Table 14

[0247] Table 15 shows an example of the UL SRS RSRP (reference signal received power). The UL SRS RSRP in Table 15 can be applied for SL positioning.

[0248]

Table 15

[0249] Next, the UE procedure for determining a subset of resources reported to the upper layer in PSSCH resource selection in side link resource allocation mode 2 will be described.

[0250] In resource allocation mode 2, the upper layer can request the UE to determine a subset of resources for which the upper layer selects resources for PSSCH / PSCCH transmission. To trigger this procedure, in slot n, the upper layer provides the following parameters for the PSSCH / PSCCH transmission.

[0251] - The resource pool where resources are reported;

[0252] - L1 priority, prio TX ;

[0253] - The remaining Packet Delay Budget (PDB);

[0254] - The number of subchannels L used for PSSCH / PSCCH transmission within a slot subCH ;

[0255] - Optionally, the resource reservation interval P in milliseconds rsvpTX

[0256] - If the upper layer requests the UE to determine a subset of resources to be selected for PSSCH / PSCCH transmission as part of a re-evaluation or pre-emption procedure, the upper layer shall provide a set of resources (r0, r1, r2,...) that can be subject to re-evaluation and a set of resources (r′0, r′1, r′2,...) that can be subject to pre-emption.

[0257] - Slot r i ″ - Determining a subset of resources requested by the upper layer before or after T3 is implementation-dependent at the UE. Here, r i ″ is the slot having the smallest slot index among (r0, r1, r2,...) and (r′0, r′1, r′2,...), and T3 is the same as T SL proc、1 as defined by the number of slots determined based on the SCS configuration of the SL BWP. Here, μ SL proc、1 is the SCS configuration of the SL BWP. SL is the SCS configuration of the SL BWP.

[0258] The following upper-layer parameters affect this procedure:

[0259] -sl-SelectionWindowList: The internal parameter T 2min is set to the corresponding value from the upper-layer parameter sl-SelectionWindowList for the given prio TX value.

[0260] -sl-Thres-RSRP-List: This upper-layer parameter provides the RSRP threshold for each (p i , p j ) combination. Here, p i is the priority field value included in the received SCI format 1-A, p j is the transmission priority on the resource selected by the UE, and in this procedure, p j =prio TX .

[0261] -sl-RS-ForSensing selects whether the UE uses PSSCH-RSRP or PSCCH-RSRP measurements.

[0262] -sl-ResourceReservePeriodList

[0263] -sl-SensingWindow: The internal parameter T0 is defined as the number of slots corresponding to sl-SensingWindowmsec.

[0264] -sl-TxPercentageList: The internal parameter X for the given prio TX is defined in the sl-TxPercentageList (prio TX ) converted from percentage to ratio.

[0265] -sl-PreemptionEnable: If sl-PreemptionEnable is provided and not the same as "enabled", the internal parameter prio pre is set to the parameter sl-PreemptionEnable provided by the upper layer.

[0266] If the resource reservation interval P rsvp_TX is provided, the resource reservation interval is converted from milliseconds to logical slot units P′ rsvp_TX as follows.

[0267] Notation:

[0268] (t′ SL 0, t′ SL 1, t′ SL 2,...) indicates the set of slots belonging to the sidelink resource pool.

[0269] For example, the UE can select a set of candidate resources (S A ) based on Table 16. For example, when resource (re)selection is triggered, the UE can select a set of candidate resources (S A ) based on Table 16. For example, when re-evaluation or pre-emption is triggered, the UE can select a set of candidate resources (S A ) based on Table 16.

[0270]

Table 16

[0271] On one hand, signals for SL positioning can be multiplexed on one slot. For example, SL PRS and SL PRS CCH can be multiplexed on one slot. And, for example, radio frequency switching between the BWP (bandwidth part) that transmits the SL PRS and the BWP that transmits the SL PRS CCH can be performed. And, for example, multiple terminals can use the resources on the one slot for SL positioning. However, for example, if the relationship between the SL PRS resource and the SL PRS CCH resource is not defined on the one slot, a collision between the SL PRS resource and the SL PRS CCH resource can occur. Or, for example, the efficiency of the radio frequency switching operation between the BWPs can be low. Therefore, for example, it is necessary to define the relationship between the SL PRS resource and the SL PRS CCH resource on the one slot, or to define the positions of the SL PRS resource and the SL PRS CCH resource on the one slot.

[0272] On one hand, symbols for AGC (Automatic Gain Control) execution can exist on the SL positioning slot. For example, the start symbol of the SL positioning slot is an AGC symbol. For example, the symbols used for SL PRS can be copied and used as the AGC symbol, and RE can be repeatedly transmitted in terms of frequency. In this case, for example, the RE repeatedly transmitted in terms of the frequency can be used as a PT RS (phase tracking reference signal). However, for example, when the SL PRS symbol is a symbol having an index that is 1 greater than the index of the AGC symbol, the accuracy of phase tracking can be lowered. Therefore, for example, it is necessary to determine the AGC symbol on the SL positioning slot in order to enhance the accuracy of phase tracking.

[0273] On the other hand, when transmitting SL PRS (positioning reference signal) and SL PRS CCH (control channel) for SL positioning via different resource pools or BWPs (bandwidth parts), there is a problem of unnecessarily increasing the delay time and power consumption for SL positioning due to RF (radio frequency) switching etc. between the different resource pools or the BWPs.

[0274] In the present disclosure, a method and operation for multiplexing and transmitting SL PRS and SL PRS CCH in one slot to solve the detailed problems described above, and an apparatus supporting this are proposed.

[0275] In the present disclosure, the following terms can be used.

[0276] - UE-triggered SL positioning: The procedure is UE-triggered sidelink (SL) positioning

[0277] - Base station / LMF-triggered SL positioning: The procedure is base station / LMF-triggered SL positioning

[0278] - UE-controlled SL positioning: The SL positioning group is UE-generated SL positioning

[0279] - Base station-controlled SL positioning: The SL positioning group is base station-generated SL positioning

[0280] - UE-based SL positioning: The UE position is UE-calculated SL positioning

[0281] - UE-assisted SL positioning: The UE position is base station / LMF-calculated SL positioning

[0282] - SL positioning group: UEs participating in SL positioning

[0283] - T-UE (Target UE): The UE whose position is calculated

[0284] - S-UE (Server UE): The UE that assists T-UE’s SL positioning

[0285] - MG: Measurement gap where only SL PRS transmission is allowed

[0286] -MW: A measurement window (MW) where both SL data and SL PRS can be transmitted in a multiplexed manner

[0287] For example, the SL PRS transmission resources can be composed of an SL PRS resource set configured with the following information.

[0288] - SL PRS resource set ID

[0289] - SL PRS resource ID list: A list of SL PRS resource IDs within the SL PRS resource set

[0290] - SL PRS resource type: Can be set to periodic, aperiodic, semi - persistent, or on - demand

[0291] - Alpha for SL PRS power control

[0292] - P0 for SL PRS power control

[0293] - Path loss reference for SL PRS power control: Can be set to SL SSB, DL PRS, UL SRS, UL SRS for positioning, PSCCH DMRS, PSSCH DMRS, PSFCH, SL CSI RS, etc.

[0294] For example, the SL PRS resource set can be composed of SL PRS resources configured with the following information.

[0295] - SL PRS resource ID

[0296] - SL PRS comb size: The interval between the REs where the SL PRS within a symbol is transmitted

[0297] - SL PRS comb offset: The RE index where the SL PRS within the first SL PRS symbol is first transmitted

[0298] - SL PRS comb cyclic shift: The cyclic shift used for generating the sequence that constitutes the SL PRS

[0299] - SL PRS start position: The first symbol index for transmitting the SL PRS within one slot

[0300] - Number of SL PRS symbols: The number of symbols that constitute the SL PRS within one slot

[0301] - Frequency domain shift: The lowest frequency position (index) where the SL PRS is transmitted in the frequency domain

[0302] - SL PRS BW: The bandwidth used for SL PRS transmission

[0303] - SL PRS resource type: It can be set to periodic or aperiodic or semi-persistent or on-demand

[0304] - SL PRS Periodicity: The period in the time domain between SL PRS resources, in units of physical or logical slots in the resource pool where the SL PRS is transmitted.

[0305] - SL PRS Offset: The offset in the time domain from the reference timing to the start of the first SL PRS resource, in units of physical or logical slots in the resource pool where the SL PRS is transmitted. The reference timing is the time when SFN = 0 or DFN = 0 or when the reception or decoding of RRC / MAC-CE / DCI / SCI associated with the SL PRS resource is successful.

[0306] - SL PRS Sequence ID

[0307] - SL PRS Spatial Relation: Can be set for SL SSB or DL PRS or UL SRS or UL SRS for positioning or PSCCH DMRS or PSSCH DMRS or PSFCH or SL CSI RS, etc.

[0308] - SL PRS CCH: SL PRS Control Channel. Can signal SL PRS resource configuration information and resource position, etc.

[0309] For example, in order to minimize the time delay and power consumption for SL positioning, the SL positioning slot structure for multiplexing and transmitting SL PRS and SL PRS CCH within one slot can be configured in the following manner.

[0310] According to an embodiment of the present disclosure, an AGC (Automatic Gain Control) gap can be inserted at the start of an SL positioning slot. In this case, for example, if the AGC gap is composed of one symbol, the SL PRS comb pattern can be inserted in a form of cyclic repetition. For example, when the comb size is 4 and 4 symbols are used for the SL PRS resource, the SL PRS RE offset for each of the 4 symbols is {0, 2, 1, 3}. In this case, for example, the AGC symbol can be applied by copying the fourth SL PRS symbol with an RE offset of 3. For example, the AGC symbol can be applied by copying the first SL PRS symbol among the SL PRS symbols forming the SL PRS resource.

[0311] FIG. 15 shows the structure of an SL positioning slot according to an embodiment of the present disclosure. The embodiment of FIG. 15 can be combined with various embodiments of the present disclosure.

[0312] Referring to FIG. 15, 14 symbols can be included in one slot 1500. For example, the first symbol of the slot 1500 is the AGC symbol 1510. For example, SL PRS can be transmitted based on a pattern (comb pattern) that repeats about the comb size. For example, the comb size of the SL PRS is 4. For example, the RE offset of the last symbol 1521 used for the SL PRS transmission is 3. For example, the AGC symbol 1510 can be used by copying the last symbol 1521 of the SL PRS symbol. For example, the RE of the AGC symbol 1510 and the RE of the last symbol 1521 of the SL PRS symbol can be transmitted on the same frequency. For example, the repeatedly transmitted RE can be used as a PT RS (Phase Tracking Reference Signal). For example, when the comb size of the SL PRS is 4, the last two symbols 1530 of the slot 1500 are not used.

[0313] FIG. 16 shows the structure of an SL positioning slot according to an embodiment of the present disclosure. The embodiment of FIG. 16 can be combined with various embodiments of the present disclosure.

[0314] Referring to FIG. 16, the operation of copying the last symbol of the SL PRS symbol and using it as the AGC symbol is the same as that disclosed in the embodiment of FIG. 15. On the other hand, different from the embodiment of FIG. 15, in FIG. 16, when the comb size of the SL PRS is 4, all the symbols included in the slot 1600 can be used. For example, when the SL PRS comb size is 4, the SL PRS can be transmitted on 4 symbols (1610), or can be transmitted on 6 symbols (1620). For example, 2 symbols can be copied with the SL PRS resource, and can be transmitted on a total of 6 symbols by extending the SL PRS transmitted on 4 symbols before by about 2 symbols (extension) (1630). For example, the index of the transmission / reception switching (TX / RX switching) symbol 1640 can be determined as the last index of the slot 1600.

[0315] FIG. 17 shows the structure of an SL positioning slot according to an embodiment of the present disclosure. The embodiment of FIG. 17 can be combined with various embodiments of the present disclosure.

[0316] Referring to FIG. 17, the operation of copying the last symbol of the SL PRS symbol and using it as the AGC symbol is the same as that disclosed in the embodiment of FIG. 15. On the other hand, different from the embodiment of FIG. 15, in FIG. 17, the first symbol of the slot 1700 is not the AGC symbol 1710. For example, when the comb size of the SL PRS is 4 and the SL PRS is not extended and transmitted, the two symbols 1720 of the slot 1700 are not used. For example, the symbol index of at least any one of the two unused symbols 1720 can be determined as the first index of the slot 1700.

[0317] According to an embodiment of the present disclosure, a transmit / receive switching gap can be inserted into the last part of the SL positioning slot. In this case, for example, when the transmit / receive switching gap is composed of one symbol, the SL PRS comb pattern can be inserted in a form of cyclic repetition. For example, when the comb size is 4 and 4 symbols are used for the SL PRS resource, the SL PRS RE offset for each of the 4 symbols is {0, 2, 1, 3}. In this case, for example, the transmit / receive switching gap symbol can be applied by copying the first SL PRS symbol whose RE offset is 0. Or, for example, it can be inserted with a symbol having a comb pattern with the RE offset and having a comb pattern in which the SL PRS RE is decimated by N:1 in the frequency domain. For example, it can be applied when the transmit / receive switching gap occupies only a 1 / N symbol duration according to the SCS (subcarrier spacing). For example, with the operation described in detail, a transmit / receive switching gap symbol that is repeated N times in the time domain can be generated. In this case, for example, only the last K times of the N repetitions can be used as the transmit / receive switching gap, and the first part of the remaining (N - K) repetitions can be used as a reference signal for SL positioning together with the SL PRS symbol.Alternatively, for example, the last SL PRS symbol among the SL PRS symbols forming the SL PRS resource can be copied and applied.

[0318] According to an embodiment of the present disclosure, FDM (frequency division multiplexing) between a CCH (control channel) and SL PRS can be applied within an SL positioning slot.

[0319] For example, the SL PRS BW (bandwidth) can be set based on the SL PRS configuration. For example, the SL PRS can be transmitted with a bandwidth narrower than the resource pool bandwidth allowed for SL PRS transmission according to the SL positioning accuracy requirements. For example, the detailed operation can be transmission via a narrower bandwidth and can have the advantage of obtaining the effect of power saving.

[0320] For example, as described in detail, when transmitting SL PRS with a bandwidth narrower than the SL PRS resource pool bandwidth, after transmitting the SL PRS within the SL PRS resource pool bandwidth, SL PRS CCH can be transmitted through the remaining bandwidth. For example, through the operations described in detail, it can have the advantage of reducing power consumption and time delay due to transmission / reception switching (TX / RX switching). Or, for example, it is possible to transmit SL PRS CCH based on a bandwidth determined by a specific set value. For example, the specific set value is the same as N times the SL PRS comb size. In this case, for example, the N value is an integer. In this case, for example, the N value is 1. For example, the specific SL PRS resource position and the SL PRS CCH resource position can be correlated with each other. In this case, for example, the SL PRS resource element (RE) offset can determine the position of the SL PRS CCH. For example, when the N value is 1, the SL PRS CCH can be composed of a sequence occupying 12 RE resources, with one RE assigned to each of the 12 symbols within the SL positioning slot, and can be composed of a total of 12 REs. For example, the positions of the REs per symbol constituting the SL PRS CCH are the same as each other. In this case, for example, the RE index determining the SL PRS CCH is the same as the SL PRS RE offset of the first SL PRS symbol within the SL PRS resource. For example, the position of the RE of a specific symbol constituting the SL PRS CCH is determined by a staggered RE pattern, which is set to increase by 1 RE from the previous symbol and perform a cyclic shift with a 12-modulo operation. For example, the position of the RE per symbol constituting the SL PRS CCH can be determined by a (previously) set rule.

[0321] FIG. 18 shows an operation in which the position of the SL PRS resource and the position of the SL PRS CCH resource are associated with each other according to an embodiment of the present disclosure. The embodiment of FIG. 18 can be combined with various embodiments of the present disclosure.

[0322] Referring to FIG. 18, SL PRS and SL PRS CCH can be transmitted to a plurality of terminals. In this case, for example, the positions of the resources used for transmitting the SL PRS and the positions of the resources used for transmitting the SL PRS CCH can be determined in association with each other. For example, the position of the first SL PRS transmission resource 1811 can be determined in association with the first SL PRS CCH transmission resource 1812. In this case, for example, the resources used for transmitting the SL PRS in the time domain can be located earlier than the resources used for transmitting the SL PRS CCH. For example, the position of the first SL PRS CCH transmission resource 1812 in the time domain can be located earlier than the position of the first SL PRS transmission resource 1811 in the time domain. For example, when the first SL PRS is transmitted on slot n, the first SL PRS CCH can be transmitted on slot (n - 1). For example, when the first SL PRS CCH and the first SL PRS are transmitted on the same slot, the symbol including the first SL PRS CCH transmission resource is an earlier symbol than the symbol including the first SL PRS transmission resource. For example, rules for determining the position of the SL PRS CCH transmission resource based on the position of the SL PRS transmission resource can be (previously) set. On the other hand, the position of the SL PRS CCH transmission resource can be determined based on the RE offset of the SL PRS. For example, the position of the first SL PRS CCH transmission resource 1812 can be determined based on the first RE offset 1813 of the first SL PRS transmission resource 1811. On the other hand, for example, the SL PRS can be transmitted based on the repetition of a comb pattern of about the comb size. For example, the first SL PRS and the second SL PRS can be transmitted based on the repetition of a comb pattern of about comb size 4. In this case, for example, the first RE offset 1813 of the first SL PRS is 0, and the second RE offset 1823 of the second SL PRS is 1.For example, the terminal that receives the first SL PRS can distinguish the position of the first SL PRS CCH transmission resource 1812 determined based on the first RE offset 1813 value from the position of the second SL PRS CCH transmission resource 1822. Or, for example, the terminal that receives the second SL PRS can distinguish the position of the second SL PRS CCH transmission resource 1822 determined based on the second RE offset 1823 value from the position of the first SL PRS CCH transmission resource 1822. On the other hand, for example, the rule for determining the position of the SL PRS CCH transmission resource based on the RE offset can be (previously) set.

[0323] FIG. 19 shows an operation in which the position of the SL PRS resource and the position of the SL PRS CCH resource are related to each other according to an embodiment of the present disclosure. The embodiment of FIG. 19 can be combined with various embodiments of the present disclosure.

[0324] Referring to FIG. 19, the comb sizes of the first SL PRS 1911 and the second SL PRS 1912 are 12. For example, the position of the resource where the first SL PRS CCH 1921 is transmitted can be determined based on the RE offset of the first SL PRS 1911. For example, the position of the resource where the second SL PRS CCH 1922 is transmitted can be determined based on the RE offset of the second SL PRS 1912. For example, the positions of the REs per symbol constituting the first SL PRS CCH 1921 are the same as each other. For example, the positions of the REs per symbol constituting the second SL PRS CCH 1922 are the same as each other. For example, the first SL PRS 1911 and the second SL PRS 1912 can be transmitted on the SL PRS bandwidth 1910. For example, the first SL PRS CCH 1921 and the second SL PRS CCH 1922 can be transmitted on the SL PRS CCH bandwidth 1920. For example, the SL PRS bandwidth 1910 is narrower than the bandwidth of the SL PRS resource pool. For example, the SL PRS CCH bandwidth 1920 is the bandwidth obtained by excluding the SL PRS bandwidth 1910 from the bandwidth of the SL PRS resource pool.

[0325] For example, the information transmitted by the SL PRS CCH is as follows. For example, when a terminal starts monitoring the SL PRS CCH, the detected position of the SL PRS CCH can signal the RE offset of the SL PRS transmitted within the corresponding slot. For example, the SL PRS RE offset can be determined as follows from the SL positioning group member ID composed of terminals participating in SL positioning. For example, the RE offset can be determined as the value obtained by performing a modulo operation on the member ID value and the comb size value (e.g., RE offset = member ID % comb size (% represents the modulo operation)). For example, the slot index in which the SL PRS is transmitted can be determined as the value obtained by dividing the member ID value by the comb size value (e.g., the slot index in which the SL PRS is transmitted = [member ID / comb size]). For example, through the detailed operations described above, when the number of members belonging to the SL positioning group is larger than the SL PRS comb size, it can be allocated to one or more SL positioning slots so that resource collisions between them do not occur. For example, through the detailed operations described above, when a terminal starts detecting the SL PRS CCH, based on this, the member ID within the SL positioning group of the terminal transmitting the SL PRS in the corresponding slot can be estimated. For example, the information transmitted by the SL PRS CCH can include information related to the number of resource repetitions of the SL PRS within the SL positioning slot. As an example, 3 to 4 bits are required according to the SL PRS comb size.For example, the information transmitted by the SL PRS CCH may include information related to the SL PRS resource set repetition index. For example, the information transmitted by the SL PRS CCH may include information related to the SL PRS resource repetition index. In this case, for example, when the SL PRS resources within one slot are repeated, only the repetition index of the first SL PRS resource among the repeated SL PRS resources can be signaled via the SL PRS CCH.

[0326] For example, when using the overall bandwidth of the SL PRS resource pool as the SL PRS bandwidth, the RE resources not used as SL PRS REs per SL PRS symbol can be used for SL PRS CCH transmission. For example, by not using separate resource pools for SL PRS CCH transmission and SL PRS transmission, it is possible to have the advantage of minimizing power consumption and time delay due to transmission / reception switching (TX / RX switching). For example, it is possible to transmit the SL PRS CCH based on the RE resources not used for the SL PRS transmission within the bandwidth determined by a specific set value. As an example, the specific set value is the same as N times the SL PRS comb size. In this case, for example, the N value is an integer. In this case, for example, the N value is 1. For example, the RE offset of the transmitted SL PRS can determine the position of the SL PRS CCH. For example, the SL PRS CCH is a sequence composed of REs with a value obtained by multiplying the value obtained by subtracting the X value from the N value and the SL PRS comb size (i.e., N×(comb size - X)). In this case, for example, the N value is an integer of 1 or more and can be set (in advance) for each SL PRS resource pool. In this case, for example, the X value can be determined based on the number of times the SL PRS resource or comb pattern of the comb size is repeated within one slot. For example, when the N value is 1 and the X value is 1, the SL PRS CCH can be composed of a sequence occupying 11 RE resources. In this case, for example, the SL PRS CCH can be composed of a total of 11 REs, with one RE assigned per symbol excluding the symbol containing the RE where the SL PRS is transmitted among the 12 symbols within the SL positioning slot.For example, the positions of the REs per symbol constituting the SL PRS CCH are the same as each other. For example, the RE index for determining the SL PRS CCH is the same as the SL PRS RE offset of the first SL PRS symbol in the SL PRS resource. For example, as described in detail, since the SL PRS CCH can collide with the SL RPS transmission resources of other terminals, the number of terminals transmitting the SL PRS within one slot can be limited to L or less, a specific threshold value. For example, the L value can be determined based on the N value and / or the K value and / or the SL PRS comb size. For example, the positions of the REs of a specific symbol constituting the SL PRS CCH are determined by a staggered RE pattern that is set to increase by 1 RE from the previous symbol and perform a cyclic shift with a 12-modulo operation. For example, the positions of the REs per symbol constituting the SL PRS CCH can be determined by a (previously) set rule.

[0327] FIG. 20 shows an operation in which the position of the SL PRS resource and the position of the SL PRS CCH resource are related to each other according to an embodiment of the present disclosure. The embodiment of FIG. 20 can be combined with various embodiments of the present disclosure.

[0328] Referring to FIG. 20, the comb sizes of the first SL PRS 2011 and the second SL PRS 2012 are 12. For example, the position of the resource where the first SL PRS CCH 2021 is transmitted can be determined based on the RE offset of the first SL PRS 2011. For example, the position of the resource where the second SL PRS CCH 2022 is transmitted can be determined based on the RE offset of the second SL PRS 2012. For example, the positions of the REs per symbol constituting the first SL PRS CCH 2021 are the same as each other. For example, the positions of the REs per symbol constituting the second SL PRS CCH 2022 are the same as each other. For example, the first SL PRS 2011 and the second SL PRS 2012 can be transmitted over the entire bandwidth of the SL PRS resource pool. For example, the first SL PRS CCH 2021 and the second SL PRS CCH 2022 can be transmitted on the REs not used for the transmission of the first SL PRS 2011 and the second SL PRS 2012. In this case, for example, a collision can occur between the first SL PRS CCH 2021 transmission resource and the second SL PRS 2012 transmission resource. Or, for example, a collision can occur between the second SL PRS CCH 2022 transmission resource and the first SL PRS 2011 transmission resource.

[0329] For example, the information transmitted by the SL PRS CCH is the same as the case of transmitting the SL PRS with a bandwidth narrower than the above-described SL PRS resource pool bandwidth.

[0330] According to various embodiments of the present disclosure, in order to minimize the time delay and power consumption for SL positioning, it is possible to propose a method of multiplexing and transmitting the SL PRS and the SL PRS CCH required for SL positioning within one slot.

[0331] For example, the applicability of the rules and / or the proposed method / rules-related parameter values of the present disclosure can be set / allowed specifically for (or differently for, or independently of) the service type. For example, the applicability of the rules and / or the proposed method / rules-related parameter values of the present disclosure can be set / allowed specifically for (or differently for, or independently of) the (LCH or service) priority. For example, the applicability of the rules and / or the proposed method / rules-related parameter values of the present disclosure can be set / allowed specifically for (or differently for, or independently of) the QoS requirements (e.g., latency, reliability, minimum communication range). For example, the applicability of the rules and / or the proposed method / rules-related parameter values of the present disclosure can be set / allowed specifically for (or differently for, or independently of) the PQI parameters. For example, the applicability of the rules and / or the proposed method / rules-related parameter values of the present disclosure can be set / allowed specifically for (or differently for, or independently of) the SL HARQ feedback ENABLED LCH / MAC PDU (transmission). For example, the applicability of the rules and / or the proposed method / rules-related parameter values of the present disclosure can be set / allowed specifically for (or differently for, or independently of) the SL HARQ feedback DISABLED LCH / MAC PDU (transmission). For example, the applicability of the rules and / or the proposed method / rules-related parameter values of the present disclosure can be set / allowed specifically for (or differently for, or independently of) the CBR measurement value of the resource pool. For example, the applicability of the rules and / or the proposed method / rules-related parameter values of the present disclosure can be set / allowed specifically for (or differently for, or independently of) the SL cast type (e.g., unicast, groupcast, broadcast). For example, the applicability of the rules and / or the proposed method / rules-related parameter values of the present disclosure can be set / allowed specifically for (or differently for, or independently of) the SL groupcast HARQ feedback option (e.g., NACK only feedback, ACK / NACK feedback, TX-RX distance-based NACK only feedback).For example, the applicability of the rules and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed for the SL mode 1CG type (e.g., SL CG type 1 or SL CG type 2). For example, the applicability of the rules and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed for the SL mode type (e.g., mode 1 or mode 2). For example, the applicability of the rules and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed for the resource pool. For example, the applicability of the rules and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed based on whether the PSFCH resource is the resource pool in which it is set. For example, the applicability of the rules and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed for the source (L2) ID. For example, the applicability of the rules and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed for the destination (L2) ID. For example, the applicability of the rules and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed for the PC5 RRC connection link. For example, the applicability of the rules and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed for the SL link. For example, the applicability of the rules and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed for the connection state (with the base station) (e.g., RRC CONNECTED state, IDLE state, INACTIVE state). For example, the applicability of the rules and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed for the SL HARQ process (ID).For example, whether the rule is applicable and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed for execution of SL DRX operation (of TX UE or RX UE). For example, whether the rule is applicable and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed for power saving (TX or RX) UE. For example, whether the rule is applicable and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed when PSFCH TX and PSFCH RX (and / or multiple PSFCH TXs exceeding UE capabilities) overlap (and / or when PSFCH TX (and / or PSFCH RX) is omitted). For example, whether the rule is applicable and / or the proposed method / rule-related parameter values of the present disclosure can be specifically (or differently, or independently) set / allowed when RX UE actually (successfully) receives PSCCH (and / or PSSCH) (re)transmission from TX UE.

[0332] For example, in the present disclosure, the setting (or designation) wording can be interpreted in an extended manner such as the form in which the base station notifies the terminal via a pre-defined (physical layer or upper layer) channel / signal (e.g., SIB, RRC, MAC CE) (and / or the form provided via pre-configuration and / or the form in which the terminal notifies other terminals via a pre-defined (physical layer or upper layer) channel / signal (e.g., SL MAC CE, PC5 RRC)).

[0333] For example, in the present disclosure, the PSFCH wording can be interpreted in an extended manner for (NR or LTE) PSSCH (and / or (NR or LTE) PSCCH) (and / or (NR or LTE) SL SSB (and / or UL channel / signal)). Also, the proposed methods of the present disclosure can be combined with each other and used in an extended manner for (new forms of methods).

[0334] For example, in the present disclosure, a specific threshold value can mean a threshold value that is predefined or (pre-)set by a network or a base station or a higher layer (including the application layer) of a terminal. For example, in the present disclosure, a specific set value can mean a value that is predefined or (pre-)set by a network or a base station or a higher layer (including the application layer) of a terminal. For example, an operation set by a network / base station can mean an operation in which a base station (pre-)sets to a UE via higher layer RRC signaling, or sets / signals to a UE via MAC CE, or signals to a UE via DCI.

[0335] According to various embodiments of the present disclosure, the relationship between the SL PRS resource and the SL PRS CCH resource on one slot can be clarified. Or, the positions of the SL PRS resource and the SL PRS CCH resource on one slot can be defined. In this case, the SL PRS can be transmitted even on a bandwidth narrower than the total bandwidth of the SL PRS resource pool. In this case, power can be saved, or the delay of SL positioning can be reduced to ensure the reliability of SL positioning. Or, thereby, it is possible to prevent the SL PRS resource and the SL PRS CCH resource from colliding. Or, thereby, it is possible to prevent the efficiency of the RF switching operation between the BWP for transmitting the SL PRS and the BWP for transmitting the SL PRS CCH from decreasing.

[0336] According to various embodiments of the present disclosure, the AGC symbols included in the SL positioning slot can be determined in relation to the SL PRS. Thereby, the accuracy of phase tracking can be improved. Or, thereby, the reliability of phase tracking can be ensured.

[0337] FIG. 21 shows a method by which a first device performs wireless communication according to an embodiment of the present disclosure. The embodiment of FIG. 21 can be combined with various embodiments of the present disclosure.

[0338] Referring to FIG. 21, in step S2110, the first device can obtain SL PRS (sidelink positioning reference signal) configuration information including information related to the SL PRS resource. In step S2120, the first device can transmit the SL PRS CCH (control channel) to the second device. In step S2130, the first device can transmit the SL PRS to the second device. For example, the position of the resource associated with the SL PRS CCH and the position of the resource associated with the SL PRS can be determined in relation to each other.

[0339] For example, in the time domain, the resource associated with the SL PRS CCH can be located before the resource associated with the SL PRS.

[0340] For example, the position of the resource associated with the SL PRS CCH can be determined based on the RE (resource element) offset of the SL PRS.

[0341] For example, the SL PRS and the SL PRS CCH can be multiplexed in one slot, and the SL PRS and the SL PRS CCH can be frequency division multiplexed.

[0342] For example, the SL PRS can be transmitted based on a comb pattern, and an AGC (automatic gain control) symbol associated with the SL PRS can be mapped with a symbol having the comb pattern that can cyclically repeat the comb pattern. For example, the AGC symbol can be mapped with the last symbol of the symbols associated with the SL PRS that can cyclically repeat the comb pattern.

[0343] For example, the SL PRS can be transmitted based on a comb pattern, and a transmit / receive switching gap symbol can be mapped with a symbol having the comb pattern that can cyclically repeat the comb pattern. For example, the transmit / receive switching gap symbol can be mapped with the first symbol of the symbols associated with the SL PRS that can cyclically repeat the comb pattern.

[0344] For example, the SL PRS can be transmitted based on a comb size, and the RE offset of the SL PRS can be based on the modulo operation value of the member ID and the comb size. For example, the index of the slot in which the SL PRS is transmitted can be based on the value obtained by dividing the member ID by the comb size.

[0345] For example, based on the SL PRS being transmitted across the entire bandwidth of the SL PRS resource pool, the SL PRS CCH can be transmitted on a second RE excluding the first RE used for transmitting the SL PRS, and the first RE and the second RE can be included in the same symbol. For example, the first device can transmit the SL PRS CCH on a plurality of REs including the second RE. For example, the plurality of REs can be (i) included in different symbols from each other, and (ii) based on the same RE offset as the SL PRS.

[0346] For example, the SL PRS CCH can include at least one of (i) the number of repetitions of the resources associated with the SL PRS included in the SL positioning slot, (ii) the repetition index of the resource set associated with the SL PRS, or (iii) information related to the repetition index of the resources associated with the SL PRS.

[0347] The proposed method can be applied to the devices according to various embodiments of the present disclosure. First, the processor 102 of the first device 100 can control the transceiver 106 to obtain SL PRS configuration information including information related to the SL (sidelink) PRS (positioning reference signal) resources. Then, the processor 102 of the first device 100 can control the transceiver 106 to transmit an SL PRS CCH (control channel) to the second device. Then, the processor 102 of the first device 100 can control the transceiver 106 to transmit the SL PRS to the second device. For example, the positions of the resources associated with the SL PRS CCH and the positions of the resources associated with the SL PRS can be determined in relation to each other.

[0348] According to an embodiment of the present disclosure, a first device configured to perform wireless communication can be provided. For example, the first device can include at least one transceiver, at least one processor, and at least one memory coupled to the at least one processor and storing instruction words. For example, based on being executed by the at least one processor, the instruction words can cause the first device to obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, transmit an SL PRS CCH (control channel) to a second device, and transmit an SL PRS to the second device. For example, the position of the resource associated with the SL PRS CCH and the position of the resource associated with the SL PRS can be determined in association with each other.

[0349] According to an embodiment of the present disclosure, a processing device configured to control a first device can be provided. For example, the processing device can include at least one processor, and at least one memory coupled to the at least one processor and storing instruction words. For example, based on being executed by the at least one processor, the instruction words can cause the first device to obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, transmit an SL PRS CCH (control channel) to a second device, and transmit an SL PRS to the second device. For example, the position of the resource associated with the SL PRS CCH and the position of the resource associated with the SL PRS can be determined in association with each other.

[0350] According to an embodiment of the present disclosure, a non-transitory computer-readable storage medium recording instruction words can be provided. For example, when executed, the instruction words cause a first device to obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, transmit an SL PRS CCH (control channel) to a second device, and transmit the SL PRS to the second device. For example, the position of a resource associated with the SL PRS CCH and the position of a resource associated with the SL PRS can be determined in association with each other.

[0351] FIG. 22 shows a method by which a second device performs wireless communication according to an embodiment of the present disclosure. The embodiment of FIG. 22 can be combined with various embodiments of the present disclosure.

[0352] Referring to FIG. 22, in step S2210, the second device can obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource. In step S2220, the second device can receive an SL PRS CCH (control channel) from the first device. In step S2230, the second device can receive the SL PRS from the first device. For example, the position of a resource associated with the SL PRS CCH and the position of a resource associated with the SL PRS can be determined in association with each other.

[0353] The proposed method can be applied to the apparatuses according to various embodiments of the present disclosure. First, the processor 202 of the second apparatus 200 can control the transceiver 206 to obtain SL PRS configuration information including information related to SL (sidelink) PRS (positioning reference signal) resources. Then, the processor 202 of the second apparatus 200 can control the transceiver 206 to receive an SL PRS CCH (control channel) from the first apparatus. Then, the processor 202 of the second apparatus 200 can control the transceiver 206 to receive an SL PRS from the first apparatus. For example, the position of the resource related to the SL PRS CCH and the position of the resource related to the SL PRS can be determined in association with each other.

[0354] According to an embodiment of the present disclosure, a second apparatus configured to perform wireless communication can be provided. For example, the second apparatus can include at least one transceiver, at least one processor, and at least one memory coupled to the at least one processor and storing instruction words. For example, based on being executed by the at least one processor, the instruction words can cause the second apparatus to obtain SL PRS configuration information including information related to SL (sidelink) PRS (positioning reference signal) resources, receive an SL PRS CCH (control channel) from a first apparatus, and receive an SL PRS from the first apparatus. For example, the position of the resource related to the SL PRS CCH and the position of the resource related to the SL PRS can be determined in association with each other.

[0355] According to an embodiment of the present disclosure, a processing device configured to control a second device can be provided. For example, the processing device can include at least one processor and at least one memory coupled to the at least one processor for storing instruction words. For example, based on being executed by the at least one processor, the instruction words can be used to obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource for the second device, receive an SL PRS CCH (control channel) from a first device, and receive an SL PRS from the first device. For example, the position of a resource related to the SL PRS CCH and the position of a resource related to the SL PRS can be determined in association with each other.

[0356] According to an embodiment of the present disclosure, a non-transitory computer-readable storage medium recording instruction words can be provided. For example, when executed, the instruction words can be used to obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource for the second device, receive an SL PRS CCH (control channel) from a first device, and receive an SL PRS from the first device. For example, the position of a resource related to the SL PRS CCH and the position of a resource related to the SL PRS can be determined in association with each other.

[0357] Various embodiments of the present disclosure can be mutually coupled.

[0358] Hereinafter, devices to which various embodiments of the present disclosure can be applied will be described.

[0359] Without being limited thereto, the various descriptions, functions, procedures, proposals, methods and / or operation flowcharts disclosed in this document can be applied to various fields that require wireless communication / connection (e.g., 5G) between devices.

[0360] Hereinafter, it will be more specifically illustrated with reference to the drawings. In the following drawings / descriptions, the same reference numerals can illustrate the same or corresponding hardware blocks, software blocks or functional blocks, unless otherwise described differently.

[0361] FIG. 23 shows a communication system 1 according to an embodiment of the present disclosure. The embodiment of FIG. 23 can be combined with various embodiments of the present disclosure.

[0362] Referring to FIG. 23, the communication system 1 to which various embodiments of the present disclosure are applied includes a wireless device, a base station, and a network. Here, the wireless device means a device that executes communication using a wireless connection technology (for example, 5G NR (New RAT), LTE (Long Term Evolution)), and is called a communication / wireless / 5G device. Without being limited thereto, the wireless device can include a robot 100a, vehicles 100b-1, 100b-2, an XR (Extended Reality) device 100c, a hand-held device 100d, a home appliance 100e, an IoT (Internet of Thing) device 100f, and an AI device / server 400. For example, the vehicle can include a vehicle equipped with a wireless communication function, a self-driving vehicle, a vehicle capable of performing communication between vehicles, etc. Here, the vehicle can include a UAV (Unmanned Aerial Vehicle) (for example, a drone). The XR device includes an AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) device, and can be realized in the form of an HMD (Head-Mounted Device), an HUD (Head-Up Display) provided in a vehicle, a TV, a smartphone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, etc. The hand-held device can include a smartphone, a smart pad, a wearable device (for example, a smart watch, smart glasses), a computer (for example, a notebook, etc.). The home appliance can include a TV, a refrigerator, a washing machine, etc. The IoT device can include a sensor, a smart meter, etc. For example, the base station and the network can be realized by a wireless device, and a specific wireless device 200a can also operate as a base station / network node for other wireless devices.

[0363] Here, the wireless communication technologies implemented in the wireless devices 100a to 100f of this specification can include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. At this time, for example, the NB-IoT technology is an example of LPWAN (Low Power Wide Area Network) technology and can be implemented as standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above-mentioned names. Further or generally, the wireless communication technologies implemented in the wireless devices 100a to 100f of this specification can communicate based on LTE-M technology. At this time, as an example, the LTE-M technology is an example of LPWAN technology and is called by various names such as eMTC (enhanced Machine Type Communication). For example, the LTE-M technology can be implemented by at least any one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the above-mentioned names. Further, or generally, the wireless communication technologies implemented in the wireless devices 100a to 100f of this specification can include at least any one of ZigBee (registered trademark), Bluetooth (registered trademark), and Low Power Wide Area Network (LPWAN) considering low-power communication, and are not limited to the above-mentioned names. As an example, the Zigbee (registered trademark) technology can generate PAN (personal area networks) related to small / low-power digital communication based on various standards such as IEEE 802.15.4 and is called by various names.

[0364] Wireless devices 100a to 100f can be connected to network 300 via base station 200. AI (Artificial Intelligence) technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can be connected to AI server 400 via network 300. Network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network, etc. Wireless devices 100a to 100f can communicate with each other via base station 200 / network 300, but can also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles 100b-1 and 100b-2 can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to everything) communication). Also, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0365] Wireless devices 100a to 100f, base station 200, and between base stations 200 can perform wireless communication / connection 150a, 150b, 150c. Here, the wireless communication / connection can be performed via uplink / downlink communication 150a, sidelink communication 150b (or D2D communication), and communication 150c between base stations (for example, various wireless connection technologies such as relay, IAB (Integrated Access BACKhaul) (for example, 5G NR)). Through the wireless communication / connection 150a, 150b, 150c, the wireless device and the base station / wireless device, and the base station and the base station can transmit / receive wireless signals to / from each other. For example, the wireless communication / connection 150a, 150b, 150c can transmit / receive signals via various physical channels. Therefore, based on various proposals of the present disclosure, at least a part of various configuration information setting processes, various signal processing processes (for example, channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), resource allocation processes, etc. for transmitting / receiving wireless signals can be executed.

[0366] FIG. 24 shows a wireless device according to an embodiment of the present disclosure. The embodiment of FIG. 24 can be combined with various embodiments of the present disclosure.

[0367] Referring to FIG. 24, the first wireless device 100 and the second wireless device 200 can transmit and receive wireless signals via various wireless connection technologies (for example, LTE, NR). Here, {the first wireless device 100, the second wireless device 200} can correspond to {the wireless device 100x, the base station 200} and / or {the wireless device 100x, the wireless device 100x} of FIG. 23.

[0368] The first wireless device 100 includes one or more processors 102 and one or more memories 104, and may additionally further include one or more transceivers 106 and / or one or more antennas 108. The processor 102 can control the memory 104 and / or the transceiver 106 and can be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. For example, after the processor 102 processes the information in the memory 104 to generate a first piece of information / signal, it can transmit a wireless signal including the first piece of information / signal via the transceiver 106. Also, after the processor 102 receives a wireless signal including a second piece of information / signal via the transceiver 106, it can store the information obtained from the signal processing of the second piece of information / signal in the memory 104. The memory 104 can be connected to the processor 102 and can store various information related to the operation of the processor 102. For example, the memory 104 can execute some or all of the processes controlled by the processor 102, or can store software code including instruction words for executing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor 102 and the memory 104 are part of a communication modem / circuit / chip designed to implement wireless communication technologies (e.g., LTE, NR). The transceiver 106 can be connected to the processor 102 and can transmit and / or receive wireless signals via one or more antennas 108. The transceiver 106 can include a transmitter and / or a receiver. The transceiver 106 can be used interchangeably with an RF (Radio Frequency) unit. In the present disclosure, the wireless device can also mean a communication modem / circuit / chip.

[0369] The second wireless device 200 includes one or more processors 202 and one or more memories 204, and can additionally further include one or more transceivers 206 and / or one or more antennas 208. The processor 202 can be configured to control the memory 204 and / or the transceiver 206 and implement the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. For example, after processing the information in the memory 204 to generate a third piece of information / signal, the processor 202 can transmit a wireless signal including the third piece of information / signal via the transceiver 206. Also, after receiving a wireless signal including a fourth piece of information / signal via the transceiver 206, the processor 202 can store the information obtained from the signal processing of the fourth piece of information / signal in the memory 204. The memory 204 can be coupled to the processor 202 and can store various information related to the operation of the processor 202. For example, the memory 204 can execute some or all of the processes controlled by the processor 202, or store software code including instruction words for executing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor 202 and the memory 204 are part of a communication modem / circuit / chip designed to implement wireless communication technologies (e.g., LTE, NR). The transceiver 206 can be coupled to the processor 202 and can transmit and / or receive wireless signals via one or more antennas 208. The transceiver 206 can include a transmitter and / or a receiver, and the transceiver 206 can be interchanged with an RF unit. In the present disclosure, the wireless device can also mean a communication modem / circuit / chip.

[0370] Hereinafter, the hardware elements of the wireless devices 100 and 200 will be described in more detail. Without being limited thereto, one or more protocol layers can be implemented by one or more processors 102 and 202. For example, one or more processors 102 and 202 can implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors 102 and 202 can generate one or more PDUs (Protocol Data Units) and / or one or more SDUs (Service Data Units) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors 102 and 202 can generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors 102 and 202 can generate a signal (e.g., a baseband signal) including a PDU, an SDU, a message, control information, data, or information according to the functions, procedures, proposals, and / or methods disclosed in this document, and provide it to one or more transceivers 106 and 206. One or more processors 102 and 202 can receive a signal (e.g., a baseband signal) from one or more transceivers 106 and 206, and obtain a PDU, an SDU, a message, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document.

[0371] One or more processors 102, 202 are referred to as a controller, microcontroller, microprocessor or microcomputer. One or more processors 102, 202 can be implemented by hardware, firmware, software, or a combination thereof. As an example, one or more ASICs (Application Specific Integrated Circuits), one or more DSPs (Digital Signal Processors), one or more DSPDs (Digital Signal Processing Devices), one or more PLDs (Programmable Logic Devices) or one or more FPGAs (Field Programmable Gate Arrays) can be included in one or more processors 102, 202. The descriptions, functions, procedures, proposals, methods and / or operation flowcharts disclosed in this document can be implemented using firmware or software, and the firmware or software can be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, proposals, methods and / or operation flowcharts disclosed in this document can be included in one or more processors 102, 202 as firmware or software set to execute, or stored in one or more memories 104, 204 and driven by one or more processors 102, 202. The descriptions, functions, procedures, proposals, methods and / or operation flowcharts disclosed in this document can be implemented using firmware or software in the form of code, instruction words and / or a set of instruction words.

[0372] One or more memories 104, 204 can be coupled to one or more processors 102, 202 and can store various forms of data, signals, messages, information, programs, code, instructions, and / or command words. The one or more memories 104, 204 can be composed of ROM, RAM, EPROM, flash memory, hard drives, registers, cache memories, computer-readable storage media, and / or combinations thereof. The one or more memories 104, 204 can be located inside and / or outside the one or more processors 102, 202. Also, the one or more memories 104, 204 can be coupled to the one or more processors 102, 202 via various techniques such as wired or wireless connections.

[0373] One or more transceivers 106, 206 can transmit user data, control information, wireless signals / channels, etc. mentioned in the text, method, and / or operation flow diagrams, etc. to one or more other devices. One or more transceivers 106, 206 can receive user data, control information, wireless signals / channels, etc. mentioned in the descriptions, functions, procedures, proposals, methods, and / or operation flow diagrams, etc. disclosed in this document from one or more other devices. For example, one or more transceivers 106, 206 can be connected to one or more processors 102, 202 and can transmit and receive wireless signals. For example, one or more processors 102, 202 can control one or more transceivers 106, 206 to transmit user data, control information, or wireless signals to one or more other devices. Also, one or more processors 102, 202 can control one or more transceivers 106, 206 to receive user data, control information, or wireless signals from one or more other devices. Also, one or more transceivers 106, 206 can be connected to one or more antennas 108, 208 and can be configured to transmit and receive user data, control information, wireless signals / channels, etc. mentioned in the descriptions, functions, procedures, proposals, methods, and / or operation flow diagrams, etc. disclosed in this document via one or more antennas 108, 208. In this document, one or more antennas are multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106, 206 can convert received wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors 102, 202. One or more transceivers 106, 206 can convert user data, control information, wireless signals / channels, etc. processed using one or more processors 102, 202 from baseband signals to RF band signals. For this purpose, one or more transceivers 106, 206 can include (analog) oscillators and / or filters.

[0374] FIG. 25 shows a signal processing circuit for a transmission signal according to an embodiment of the present disclosure. The embodiment of FIG. 25 can be combined with various embodiments of the present disclosure.

[0375] Referring to FIG. 25, the signal processing circuit 1000 can include a scrambler 1010, a modulator 1020, a layer mapper 1030, a precoder 1040, a resource mapper 1050, and a signal generator 1060. Without being limited thereto, the operations / functions of FIG. 25 can be executed by the processors 102 and 202 and / or the transceivers 106 and 206 of FIG. 24. The hardware elements of FIG. 25 can be implemented by the processors 102 and 202 and / or the transceivers 106 and 206 of FIG. 24. For example, blocks 1010 to 1060 can be implemented by the processors 102 and 202 of FIG. 24. Also, blocks 1010 to 1050 can be implemented by the processors 102 and 202 of FIG. 24, and block 1060 can be implemented by the transceivers 106 and 206 of FIG. 24.

[0376] The codeword can be converted into a radio signal through the signal processing circuit 1000 of FIG. 25. Here, the codeword is an encoded bit sequence of an information block. The information block can include a transmission block (e.g., a transmission block of UL-SCH, a transmission block of DL-SCH). The radio signal can be transmitted via various physical channels (e.g., PUSCH, PDSCH).

[0377] Specifically, the codeword can be converted into a bit sequence scrambled by the scrambler 1010. The scramble sequence used for scrambling is generated based on an initialization value, which can include the ID information of the wireless device, etc. The scrambled bit sequence can be modulated into a modulation symbol sequence by the modulator 1020. The modulation method can include pi / 2-BPSK (pi / 2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), m-QAM (m-Quadrature Amplitude Modulation), etc. The complex modulation symbol sequence can be mapped to one or more transmission layers by the layer mapper 1030. The modulation symbols of each transmission layer can be mapped to the corresponding antenna port(s) by the precoder 1040 (precoding). The output z of the precoder 1040 is obtained by multiplying the output y of the layer mapper 1030 by an N*M precoding matrix W. Here, N is the number of antenna ports, and M is the number of transmission layers. Here, the precoder 1040 can perform precoding after performing a transform precoding (e.g., DFT transform) on the complex modulation symbol. Also, the precoder 1040 can perform precoding without performing transform precoding.

[0378] The resource mapper 1050 can map the modulation symbols of each antenna port to time-frequency resources. The time-frequency resources can include a plurality of symbols in the time domain (e.g., CP-OFDMA symbols, DFT-s-OFDMA symbols) and can include a plurality of subcarriers in the frequency domain. The signal generator 1060 generates a radio signal from the mapped modulation symbols, and the generated radio signal can be transmitted to other devices via each antenna. For this purpose, the signal generator 1060 can include an IFFT (Inverse Fast Fourier Transform) module, a CP (Cyclic Prefix) inserter, a DAC (Digital-to-Analog Converter), a frequency uplink converter, etc.

[0379] In a wireless device, the signal processing procedure for a received signal can be configured as the reverse of the signal processing procedures 1010 to 1060 in FIG. 25. For example, a wireless device (e.g., 100, 200 in FIG. 24) can receive a radio signal from the outside via an antenna port / transceiver. The received radio signal can be converted into a baseband signal via a signal restorer. For this purpose, the signal restorer can include a frequency downlink converter, an ADC (analog-to-digital converter), a CP remover, an FFT (Fast Fourier Transform) module. Thereafter, the baseband signal can be restored to a codeword through a resource demapper procedure, a postcoding procedure, a demodulation procedure, and a descrambling procedure. The codeword can be restored to the original information block through decoding. Therefore, a signal processing circuit (not shown) for a received signal can include a signal restorer, a resource demapper, a postcoder, a demodulator, a descrambler, and a decoder.

[0380] FIG. 26 shows a wireless device according to an embodiment of the present disclosure. The wireless device can be realized in various forms depending on the usage example / service (see FIG. 26). The embodiment of FIG. 26 can be combined with various embodiments of the present disclosure.

[0381] Referring to FIG. 26, the wireless devices 100 and 200 correspond to the wireless devices 100 and 200 in FIG. 24 and can be composed of various elements, components, units / parts, and / or modules. For example, the wireless devices 100 and 200 can include a communication unit 110, a control unit 120, a memory unit 130, and additional elements 140. The communication unit can include a communication circuit 112 and a transceiver(s) 114. For example, the communication circuit 112 can include one or more processors 102 and 202 and / or one or more memories 104 and 204 in FIG. 24. For example, the transceiver(s) 114 can include one or more transceivers 106 and 206 and / or one or more antennas 108 and 208 in FIG. 24. The control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional elements 140 and controls various operations of the wireless device. For example, the control unit 120 can control the electrical / mechanical operations of the wireless device based on programs / codes / instructions / information stored in the memory unit 130. Also, the control unit 120 can transmit the 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 the 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.

[0382] The additional element 140 can be configured in various ways depending on the type of wireless device. For example, the additional element 140 can include at least one of a power unit / battery, an input / output unit (I / O unit), a drive unit, and a computing unit. Without being limited thereto, the wireless device can be realized in the form of a robot (100a in FIG. 23), a vehicle (100b-1, 100b-2 in FIG. 23), an XR device (100c in FIG. 23), a portable device (100d in FIG. 23), a home appliance (100e in FIG. 23), an IoT device (100f in FIG. 23), a digital broadcast terminal, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or a financial device), a security device, a climate / environment device, an AI server / device (400 in FIG. 23), a base station (200 in FIG. 23), a network node, etc. The wireless device can be movable or used at a fixed location depending on the usage example / service.

[0383] In FIG. 26, various elements, components, units / parts, and / or modules within the wireless devices 100 and 200 can be interconnected entirely via a wired interface or at least partially wirelessly via the communication unit 110. For example, within the wireless devices 100 and 200, the control unit 120 and the communication unit 110 can be connected by wire, and the control unit 120 and the first unit (e.g., 130, 140) can be connected wirelessly via the communication unit 110. Also, each element, component, unit / part, and / or module within the wireless devices 100 and 200 can further include one or more elements. For example, the control unit 120 can be composed of a set of one or more processors. For example, the control unit 120 can be composed of a set such as a communication control processor, an application processor, an ECU (Electronic Control Unit), a graphics processing processor, a memory control processor, etc. As another example, the memory unit 130 can be composed of a RAM (Random Access Memory), a DRAM (Dynamic RAM), a ROM (Read ONLY Memory), a flash memory, a volatile memory, a non-volatile memory, and / or a combination thereof.

[0384] Hereinafter, the implementation example of FIG. 26 will be described in more detail with reference to other drawings.

[0385] FIG. 27 shows a mobile device according to an embodiment of the present disclosure. The mobile device can include a smartphone, a smart pad, a wearable device (e.g., a smartwatch, smart glasses), a portable computer (e.g., a notebook computer, etc.). The mobile device can be referred to as an MS (Mobile Station), a UT (user terminal), an MSS (Mobile Subscriber Station), an SS (Subscriber Station), an AMS (Advanced Mobile Station), or a WT (Wireless terminal). The embodiment of FIG. 27 can be combined with various embodiments of the present disclosure.

[0386] Referring to FIG. 27, the mobile device 100 can include an antenna unit 108, a communication unit 110, a control unit 120, a memory unit 130, a power supply unit 140a, an interface unit 140b, and an input / output unit 140c. The antenna unit 108 can be configured as part of the communication unit 110. Blocks 110-130 / 140a-140c respectively correspond to blocks 110-130 / 140 in FIG. 26.

[0387] The communication unit 110 can transmit and receive signals (such as data, control signals, etc.) with other wireless devices and base stations. The control unit 120 can control the components of the mobile device 100 and execute various operations. The control unit 120 can include an AP (Application Processor). The memory unit 130 can store data / parameters / programs / codes / command words necessary for the operation of the mobile device 100. Also, the memory unit 130 can store input / output data / information, etc. The power supply unit 140a supplies power to the mobile device 100 and can include a wired / wireless charging circuit, a battery, etc. The interface unit 140b can support the connection between the mobile device 100 and other external devices. The interface unit 140b can include various ports (such as audio input / output ports, video input / output ports) for connection with external devices. The input / output unit 140c can receive the input of video information / signals, audio information / signals, data, and / or information input from the user, or output them. The input / output unit 140c can include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and / or a haptic module, etc.

[0388] As an example, in the case of data communication, the input / output unit 140c can acquire information / signals (such as touch, text, voice, image, video) input from the user, and the acquired information / signals can be stored in the memory unit 130. The communication unit 110 can convert the information / signals stored in the memory into wireless signals and directly transmit the converted wireless signals to other wireless devices or transmit them to the base station. Also, after receiving a wireless signal from another wireless device or the base station, the communication unit 110 can restore the received wireless signal to the original information / signals. The restored information / signals can be stored in the memory unit 130 and then output in various forms (such as text, voice, image, video, haptic) via the input / output unit 140c.

[0389] FIG. 28 shows a vehicle or an autonomous vehicle according to an embodiment of the present disclosure. The vehicle or the autonomous vehicle can be realized by a mobile robot, a vehicle, a train, an aerial vehicle (AV), a ship, or the like. The embodiment of FIG. 28 can be combined with various embodiments of the present disclosure.

[0390] Referring to FIG. 28, the vehicle or autonomous vehicle 100 can 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 can be configured as a part of the communication unit 110. Blocks 110 / 130 / 140a to 140d respectively correspond to blocks 110 / 130 / 140 in FIG. 26.

[0391] The communication unit 110 can transmit and receive signals (such as data, control signals, etc.) with external devices such as other vehicles, base stations (e.g., base stations, roadside units, etc.), and servers. The control unit 120 can control elements of the vehicle or the autonomous driving vehicle 100 and execute various operations. The control unit 120 can include an ECU (Electronic Control Unit). The driving unit 140a can enable the vehicle or the autonomous driving vehicle 100 to travel on the ground. The driving unit 140a can include an engine, a motor, a power train, wheels, brakes, a steering device, etc. The power supply unit 140b can supply power to the vehicle or the autonomous driving vehicle 100 and can include a wired / wireless charging circuit, a battery, etc. The sensor unit 140c can obtain vehicle state, surrounding environment information, user information, etc. The sensor unit 140c can include an IMU (inertial measurement unit) sensor, a collision sensor, a wheel sensor, a speed sensor, an inclination sensor, a weight detection sensor, a heading sensor, a position 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, an illuminance sensor, a pedal position sensor, etc. The autonomous driving unit 140d can implement technologies such as maintaining the lane during driving, automatically adjusting the speed like adaptive cruise control, automatically driving along a determined route, and automatically setting and driving along a route when a destination is set.

[0392] As an example, the communication unit 110 can receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d can generate an autonomous driving route and a driving plan based on the acquired data. The control unit 120 can control the driving unit 140a so that the vehicle or the autonomous driving vehicle 100 moves along the autonomous driving route according to the driving plan (for example, speed / direction adjustment). During autonomous driving, the communication unit 110 can non-periodically acquire the latest traffic information data from an external server and acquire the surrounding traffic information data from surrounding vehicles. Also, during autonomous driving, the sensor unit 140c can acquire the vehicle state and the surrounding environment information. The autonomous driving unit 140d can update the autonomous driving route and the driving plan based on the newly acquired data / information. The communication unit 110 can transmit information regarding the vehicle position, the autonomous driving route, the driving plan, etc. to the external server. The external server can predict the traffic information data in advance using AI technology, etc. based on the information collected from the vehicle or the autonomous driving vehicle, and can provide the predicted traffic information data to the vehicle or the autonomous driving vehicle.

[0393] The claims described in this specification can be combined in various ways. For example, the technical features of the method claims in this specification can be combined and implemented in an apparatus, and the technical features of the apparatus claims in this specification can be combined and implemented in a method. Also, the technical features of the method claims in this specification and the technical features of the apparatus claims can be combined and implemented in an apparatus, and the technical features of the method claims in this specification and the technical features of the apparatus claims can be combined and implemented in a method.

Claims

1. In a method for a first device to perform wireless communication, obtaining SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource; transmitting an SL PRS CCH (control channel) to a second device; and transmitting an SL PRS to the second device, wherein positions of resources related to the SL PRS CCH and positions of resources related to the SL PRS are determined in association with each other.

2. The method according to claim 1, wherein a resource related to the SL PRS CCH is located before a resource related to the SL PRS in a time domain.

3. The method according to claim 1, wherein a position of a resource related to the SL PRS CCH is determined based on an RE (resource element) offset of the SL PRS.

4. The SL PRS and the SL PRS CCH are multiplexed in one slot, and the SL PRS and the SL PRS CCH are frequency division multiplexed.

5. The SL PRS is transmitted based on a comb pattern, and an AGC (automatic gain control) symbol associated with the SL PRS is mapped to a symbol having the comb pattern that can cyclically repeat the comb pattern.

6. The method according to claim 5, wherein the AGC symbol is mapped to a last symbol of symbols related to the SL PRS that can cyclically repeat the comb pattern.

7. The SL PRS is transmitted based on a comb pattern, and a transmit / receive switching gap symbol is mapped to a symbol having the comb pattern that can cyclically repeat the comb pattern.

8. The method according to claim 7, wherein the transmission / reception switching gap symbol is mapped to the first symbol of the symbols related to the SL PRS capable of circulating and repeating the comb pattern.

9. The SL PRS is transmitted based on a comb size, and the method according to claim 1, wherein the RE offset of the SL PRS is based on a modulo operation value of a member ID and the comb size.

10. The method according to claim 9, wherein the index of the slot in which the SL PRS is transmitted is based on a value obtained by dividing the member ID by the comb size.

11. Based on the SL PRS being transmitted over the entire bandwidth of the SL PRS resource pool, the SL PRS CCH is transmitted on a second RE excluding a first RE used for the transmission of the SL PRS, and the method according to claim 1, wherein the first RE and the second RE are included in the same symbol.

12. The first device transmits the SL PRS CCH on a plurality of REs including the second RE, the method according to claim 11, wherein the plurality of REs are (i) included in different symbols from each other and (ii) based on the same RE offset as the SL PRS.

13. The method according to claim 1, wherein the SL PRS CCH includes at least one of (i) the number of repetitions of the resources related to the SL PRS included in the SL positioning slot, (ii) the repetition index of the resource set related to the SL PRS, or (iii) information related to the repetition index of the resources related to the SL PRS.

14. In a first device configured to perform wireless communication, at least one transceiver, at least one processor, and, at least one memory connected to the at least one processor and storing instruction words, wherein the instruction words, based on being executed by the at least one processor, cause the first device to obtain SL PRS configuration information including information related to SL (sidelink) PRS (positioning reference signal) resources. Cause an SL PRS CCH (control channel) to be transmitted to a second device, and Cause an SL PRS to be transmitted to the second device, A first device in which the position of a resource associated with the SL PRS CCH and the position of a resource associated with the SL PRS are determined in association with each other. **Claim 15** In a processing device configured to control a first device, At least one processor, and At least one memory coupled to the at least one processor and storing instruction words, wherein the instruction words, based on being executed by the at least one processor, cause the first device to Obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, Cause an SL PRS CCH (control channel) to be transmitted to a second device, and Cause an SL PRS to be transmitted to the second device, A processing device in which the position of a resource associated with the SL PRS CCH and the position of a resource associated with the SL PRS are determined in association with each other. **Claim 16** A non-transitory computer-readable storage medium recording instruction words, wherein When the instruction words are executed, for a first device, Obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, Cause an SL PRS CCH (control channel) to be transmitted to a second device, and Cause an SL PRS to be transmitted to the second device, A non-transitory computer-readable storage medium in which the position of a resource associated with the SL PRS CCH and the position of a resource associated with the SL PRS are determined in association with each other. **Claim 17** In a method for a second device to perform wireless communication, Obtaining SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, Receiving an SL PRS CCH (control channel) from a first device, and Receiving an SL PRS from the first device. A method in which the position of a resource associated with the SL PRS CCH and the position of a resource associated with the SL PRS are determined in relation to each other.

18. In a second device configured to perform wireless communication, at least one transceiver, at least one processor, and at least one memory connected to the at least one processor for storing instruction words, wherein the instruction words, based on being executed by the at least one processor, cause the second device to obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, receive an SL PRS CCH (control channel) from a first device, and receive an SL PRS from the first device, wherein the position of a resource associated with the SL PRS CCH and the position of a resource associated with the SL PRS are determined in relation to each other.

19. In a processing device configured to control a second device, at least one processor, and at least one memory connected to the at least one processor for storing instruction words, wherein the instruction words, based on being executed by the at least one processor, cause the second device to obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, receive an SL PRS CCH (control channel) from a first device, and receive an SL PRS from the first device, wherein the position of a resource associated with the SL PRS CCH and the position of a resource associated with the SL PRS are determined in relation to each other.

20. A non-transitory computer-readable storage medium recording instruction words, wherein when the instruction words are executed, for a second device, obtain SL PRS configuration information including information related to an SL (sidelink) PRS (positioning reference signal) resource, Receiving an SL PRS CCH (control channel) from a first device, and Receiving an SL PRS from the first device, A non-transitory computer-readable storage medium in which the position of a resource associated with the SL PRS CCH and the position of a resource associated with the SL PRS are determined in association with each other.

Images