Power control method and apparatus for transmitting inter-terminal physical shared channel in shared resource pool

Abstract

An operation method of a first apparatus (100) in a wireless communication system is presented. The method comprises the steps of: determining a first transmission power for a first inter-device physical shared channel transmission to be performed using a first resource in a shared spectrum, based on a use of the inter-device physical shared channel transmission; and performing the first inter-device physical shared channel transmission based on the first transmission power and the first resource, in which the first transmission power may be determined based on a power control parameter set for each use of the inter-device physical shared channel transmission.

Description

Technical Field

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

[0002] 5G NR is the next generation of Long Term Evolution (LTE) and a completely new mobile communications system with high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, from low-frequency bands below 1 GHz to mid-frequency bands between 1 GHz and 10 GHz, and high-frequency (millimeter wave) bands above 24 GHz.

[0003] The 6G (wireless communication) system aims to achieve (i) very high data rates per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) reduced energy consumption for battery-less IoT devices, (vi) ultra-reliable connectivity, and (vii) networked intelligence with machine learning capabilities. The vision of the 6G system can be reflected in four aspects: intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity. The 6G system can meet the requirements shown in Table 1 below. For example, Table 1 can represent an example of the requirements of the 6G system.

[0004] [Table 1]

[0005] Peak data rate per device 1Tbps E2E latency 1ms Maximum spectral efficiency 100bps / Hz Mobility support Up to 1000km / h Satellite Integration completely AI completely autonomous vehicles completely XR completely Tactile communication completely Summary of the Invention

[0006] Technical Solution

[0007] According to an embodiment of the present disclosure, a method for performing wireless communication by a first device may be provided. For example, the method may include: determining a first transmit power for first inter-device physical shared channel transmission to be performed using a first resource within a shared spectrum based on a purpose of the inter-device physical shared channel transmission; performing a first inter-device physical control channel transmission for scheduling the first inter-device physical shared channel transmission based on the first transmit power and the first resource; and performing the first inter-device physical shared channel transmission based on the first transmit power, the first inter-device physical control channel transmission, and the first resource, wherein the first transmit power may be determined based on a power control parameter configured according to the purpose of the inter-device physical shared channel transmission.

[0008] According to an embodiment of the present disclosure, a first device for performing wireless communication may be proposed. For example, the first device may include: at least one transceiver; at least one processor; and at least one memory, the at least one memory being operatively connected to the at least one processor and storing instructions, the instructions causing the first device to perform operations based on being executed by the at least one processor. For example, the operations may include: determining a first transmit power for a first inter-device physical shared channel transmission to be performed using a first resource within a shared spectrum based on the purpose of the inter-device physical shared channel transmission; performing a first inter-device physical control channel transmission for scheduling the first inter-device physical shared channel transmission based on the first transmit power and the first resource; and performing a first inter-device physical shared channel transmission based on the first transmit power, the first inter-device physical control channel transmission, and the first resource, wherein the first transmit power may be determined based on a power control parameter configured according to the purpose of the inter-device physical shared channel transmission.

[0009] According to an embodiment of the present disclosure, a device suitable for controlling a first user equipment (UE) may be proposed. For example, the device may include: at least one processor; and at least one memory, the at least one memory being operatively connected to the at least one processor and storing instructions, the instructions causing the first UE to perform an operation based on being executed by the at least one processor. For example, the operation may include: determining a first transmit power for a first inter-UE physical shared channel transmission to be performed using a first resource within a shared spectrum based on the purpose of the inter-UE physical shared channel transmission; performing a first inter-UE physical control channel transmission for scheduling the first inter-UE physical shared channel transmission based on the first transmit power and the first resource; and performing a first inter-UE physical shared channel transmission based on the first transmit power, the first inter-UE physical control channel transmission, and the first resource, wherein the first transmit power may be determined based on a power control parameter configured according to the purpose of the inter-UE physical shared channel transmission.

[0010] According to an embodiment of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, the instructions, upon being executed, may cause a first device to: determine, based on the purpose of the inter-device physical shared channel transmission, a first transmit power for a first inter-device physical shared channel transmission to be performed using a first resource within a shared spectrum; perform, based on the first transmit power and the first resource, a first inter-device physical control channel transmission for scheduling the first inter-device physical shared channel transmission; and perform the first inter-device physical shared channel transmission based on the first transmit power, the first inter-device physical control channel transmission, and the first resource, wherein the first transmit power may be determined based on a power control parameter configured according to the purpose of the inter-device physical shared channel transmission.

[0011] According to an embodiment of the present disclosure, a method for performing wireless communication by a second device may be provided. For example, the method may include: receiving, from a first device, a first inter-device physical control channel transmission for scheduling a first inter-device physical shared channel transmission based on a first resource; and receiving, from the first device, a first inter-device physical shared channel transmission based on the first resource and the first inter-device physical control channel transmission, wherein the first inter-device physical control channel transmission and the first inter-device physical shared channel transmission may be performed based on a first transmission power, and wherein the first transmission power may be determined based on a purpose of the first inter-device physical shared channel transmission.

[0012] According to an embodiment of the present disclosure, a second device for performing wireless communication may be proposed. For example, the second device may include: at least one transceiver; at least one processor; and at least one memory, the at least one memory being operatively connected to the at least one processor and storing instructions, the instructions causing the second device to perform an operation based on being executed by the at least one processor. For example, the operation may include: receiving a first inter-device physical control channel transmission for scheduling a first inter-device physical shared channel transmission from a first device based on a first resource; and receiving a first inter-device physical shared channel transmission from the first device based on the first resource and the first inter-device physical control channel transmission, wherein the first inter-device physical control channel transmission and the first inter-device physical shared channel transmission may be performed based on a first transmission power, and wherein the first transmission power may be determined based on the purpose of the first inter-device physical shared channel transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A communication structure that may be provided in a 6G system according to an embodiment of the present disclosure is shown.

[0014] Figure 2 The electromagnetic spectrum is shown according to one embodiment of the present disclosure.

[0015] Figure 3 An example of a typical NTN scenario based on transparent payload according to one embodiment of the present disclosure is shown.

[0016] Figure 4 An example of a typical NTN scenario based on regenerated payload according to one embodiment of the present disclosure is shown.

[0017] Figure 5 An example of a sensing operation according to one embodiment of the present disclosure is shown.

[0018] Figure 6 The structure of a time slot of a frame according to an embodiment of the present disclosure is shown.

[0019] Figure 7An example of a BWP according to an embodiment of the present disclosure is shown.

[0020] Figure 8 A process of performing V2X or SL communication by a UE based on a resource allocation pattern according to an embodiment of the present disclosure is shown.

[0021] Figure 9 An example of an architecture in a 5G system according to an embodiment of the present disclosure is shown, in which architecture positioning of a UE connected to a next generation radio access network (NG-RAN) or E-UTRAN is possible.

[0022] Figure 10 An implementation example of a network for measuring the location of a UE according to an embodiment of the present disclosure is shown.

[0023] Figure 11 An example of protocol layers for supporting LTE Positioning Protocol (LPP) message transmission between an LMF and a UE according to an embodiment of the present disclosure is shown.

[0024] Figure 12 An example of protocol layers for supporting NR Positioning Protocol A (NRPPa) PDU transmission between LMF and NG-RAN node according to an embodiment of the present disclosure is shown.

[0025] Figure 13 An observed time difference of arrival (OTDOA) positioning method according to an embodiment of the present disclosure is shown.

[0026] Figure 14 A two-sided RTT according to one embodiment of the present disclosure is shown.

[0027] Figure 15 A process of performing inter-UE transmission based on transmit power determined using a single power control parameter according to the related art is shown.

[0028] Figure 16 A process of performing inter-UE transmission based on transmit power determined using multiple power control parameters according to an embodiment of the present disclosure is shown.

[0029] Figure 17 A process of performing wireless communication by a first device according to one embodiment of the present disclosure is shown.

[0030] Figure 18 A process of a second device performing wireless communication according to one embodiment of the present disclosure is shown.

[0031] Figure 19 A communication system 1 according to an embodiment of the present disclosure is shown.

[0032] Figure 20A wireless device according to an embodiment of the present disclosure is shown.

[0033] Figure 21 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown.

[0034] Figure 22 Another example of a wireless device according to an embodiment of the present disclosure is shown.

[0035] Figure 23 A handheld device according to an embodiment of the present disclosure is shown.

[0036] Figure 24 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0037] In the present disclosure, "A or B" may mean "only A", "only B", or "both A and B". In other words, in the present disclosure, "A or B" may be interpreted as "A and / or B". For example, in the present disclosure, "A, B or C" may mean "only A", "only B", "only C", or "any combination of A, B, and C".

[0038] As used in this disclosure, a slash ( / ) or a comma may mean "and / or." For example, "A / B" may mean "A and / or B." Thus, "A / B" may mean "only A," "only B," or "both A and B." For example, "A, B, C" may mean "A, B, or C."

[0039] In the present disclosure, “at least one of A and B” may mean “only A”, “only B”, or “both A and B”. In addition, in the present disclosure, the expression “at least one of A or B” or “at least one of A and / or B” may be interpreted as “at least one of A and B”.

[0040] In addition, in the present disclosure, “at least one of A, B, and C” may mean “only A,” “only B,” “only C,” or “any combination of A, B, and C.” In addition, “at least one of A, B, or C” or “at least one of A, B, and / or C” may mean “at least one of A, B, and C.”

[0041] In addition, the brackets used in the present disclosure may mean "for example". Specifically, when indicated as "control information (PDCCH)", this may mean that "PDCCH" is proposed as an example of "control information". In other words, the "control information" of the present disclosure is not limited to "PDCCH", and "PDDCH" may be proposed as an example of "control information". Specifically, when indicated as "control information (i.e., PDCCH)", this may also mean that "PDCCH" is proposed as an example of "control information".

[0042] In the following description, “when, if, or in the event of” may be replaced with “based on”.

[0043] The technical features respectively described in one drawing in the present disclosure may be implemented separately or may be implemented simultaneously.

[0044] In the present disclosure, a high-layer parameter may be a parameter configured, preconfigured, or predefined for a UE. For example, a base station or a network may send the high-layer parameter to the UE. For example, the high-layer parameter may be sent via radio resource control (RRC) signaling or medium access control (MAC) signaling.

[0045] In the present disclosure, “configuration / configured or defined / defined” may be interpreted as being configured or pre-configured for a device through predefined signaling (e.g., SIB, MAC, RRC) from a base station or network. In the present disclosure, “configuration / configured or defined / defined” may be interpreted as being pre-configured for a device.

[0046] The techniques described below can be used in various wireless communication systems such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. CDMA can be implemented using radio technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA-2000. TDMA can be implemented using radio technologies such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA can be implemented using radio technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Evolved UTRA (E-UTRA), etc. IEEE 802.16m is an evolution of IEEE 802.16e and provides backward compatibility with systems based on IEEE 802.16e. UTRA is part of the Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is part of Evolved UMTS (E-UMTS) using E-UTRA. 3GPP LTE uses OFDMA in the downlink and SC-FDMA in the uplink. LTE-Advanced (LTE-A) is an evolution of LTE.

[0047] The technology proposed in this disclosure can be implemented as 6G wireless technology and can be applied to various 6G systems. For example, the 6G system may have key factors such as enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), massive machine type communication (mMTC), artificial intelligence (AI) integrated communication, tactile Internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion, and enhanced data security.

[0048] Figure 1 A communication structure that may be provided in a 6G system according to one embodiment of the present disclosure is shown. Figure 1 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0049] In 6G, new network features may include the following.

[0050] -Satellite integrated network

[0051] -Connected Intelligence: Unlike previous generations of wireless communication systems, 6G is revolutionary, and wireless evolution may be updated from "connected things" to "connected intelligence." AI can be applied at every step of the communication process (or every signal processing step, as described below).

[0052] -Seamless integration of wireless information and energy transfer.

[0053] -Ubiquitous Hyper-3D Connectivity: Hyper-3D connectivity will be generated based on the ubiquity of 6G to access networks and core network functions on drones and ultra-low Earth orbit satellites.

[0054] Among the new network features of 6G, several general requirements are as follows.

[0055] -Small cell network

[0056] -Ultra-dense heterogeneous network

[0057] - High capacity backhaul

[0058] - Radar technology integrated with mobile technology: High-precision positioning (or location-based services) through communication is one of the functions of 6G wireless communication systems. Therefore, radar systems will be integrated with 6G networks.

[0059] -Software and virtualization.

[0060] The following describes the core implementation technologies of the 6G system.

[0061] Artificial Intelligence (AI): When AI is introduced into communications, real-time data transmission can be simplified and improved. AI can use countless analyses to determine how to perform complex target tasks. This means AI can increase efficiency and reduce processing latency. Time-consuming operations such as handovers, network selection, and resource scheduling can be performed instantly with AI. AI can also play a significant role in M2M, machine-to-human, and human-to-machine communications. Furthermore, AI could enable instant communication in brain-computer interfaces (BCIs). AI-based communication systems can be supported by metamaterials, smart structures, smart networks, smart devices, intelligent cognitive radios, self-maintaining wireless networks, and machine learning.

[0062] -THz communication: Data rates can be increased by increasing bandwidth. This can be achieved by using sub-TH communication with wide bandwidth and applying advanced massive MIMO technology. THz waves are called submillimeter radiation, generally indicating a frequency band between 0.1THz and 10THz with corresponding wavelengths in the range of 0.03mm to 3mm. The band range of 100GHz to 300GHz (sub-THz band) is considered to be the main part of the THz band for cellular communications. When the sub-THz band is added to the millimeter wave band, the 6G cellular communication capacity increases. The defined THz band of 300GHz to 3THz is in the far infrared (IR) band. The band of 300GHz to 3THz is part of the optical band, but is located at the boundary of the optical band and immediately after the RF band. Therefore, the band of 300GHz to 3THz has similarities with RF. Figure 2 The electromagnetic spectrum according to an embodiment of the present disclosure is shown. Figure 2 The embodiments of the present disclosure can be combined with various embodiments of the present disclosure. The main features of THz communication include (i) a wide range of bandwidths that can be used to support very high data rates; and (ii) high path loss at high frequencies (highly directional antennas are essential). The narrow beamwidth generated in highly directional antennas reduces interference. The small wavelength of THz signals allows a larger number of antenna elements to be integrated with devices and base stations operating in this band. Therefore, advanced adaptive placement techniques that can overcome range limitations can be used.

[0063] - Massive MIMO technology (Large MIMO)

[0064] -Holographic Beamforming (HBF)

[0065] -Optical wireless technology

[0066] -Free Space Optical (FSO) Backhaul Network

[0067] -Quantum communication

[0068] - No cellular communication

[0069] -Integration of wireless information and power transmission

[0070] -Integration of wireless communication and sensing

[0071] -Integrated access and backhaul network

[0072] -Big data analysis

[0073] -Reconfigurable smart surface

[0074] -Metaverse

[0075] -Blockchain

[0076] Unmanned Aerial Vehicles (UAVs): UAVs, or drones, will be a key factor in 6G wireless communications. In most cases, UAV technology can provide high-speed data wireless connectivity. A base station (BS) entity is installed within the UAV to provide cellular connectivity. UAVs offer certain features not found in fixed BS infrastructure, such as ease of deployment, robust line-of-sight links, and the freedom of mobility control. During emergencies such as natural disasters, deploying terrestrial telecommunications infrastructure is economically unfeasible and sometimes unable to provide services in turbulent environments. UAVs can easily handle such situations. UAVs will become a new paradigm in wireless communications. This technology facilitates the three fundamental requirements of wireless networks, such as eMBB, URLLC, and mMTC. UAVs can also serve a variety of purposes, such as improving network connectivity, fire detection, disaster response services, security and monitoring, pollution monitoring, parking monitoring, and accident detection. Therefore, UAV technology is recognized as one of the most important technologies for 6G communications.

[0077] -Advanced Air Mobility (AAM): AAM is a general concept of Urban Air Mobility (UAM), which is air transportation that can be used in urban areas and can refer to transportation tools including movement between urban areas and regional hubs.

[0078] -Autonomous driving (self-driving): Vehicle-to-everything (V2X) is a core element for building autonomous driving infrastructure. It can be a technology that allows vehicles to communicate and share information with various road elements, such as vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I). To maximize the performance of autonomous driving and ensure high safety, high transmission speeds and low latency technologies are essential. In the future, autonomous driving may need to go beyond delivering warnings or guidance messages to the driver and actively intervene in vehicle operations and directly control the vehicle in dangerous situations. To this end, since the amount of information that needs to be sent and received may be enormous, autonomous driving is expected to be maximized in 6G, which has higher transmission speeds and lower latency than 5G.

[0079] - Non-terrestrial network (NTN): NTN may refer to a network or network segment that utilizes radio frequency (RF) resources on a satellite (or unmanned aerial system (UAS) platform). Figure 3 An example of a typical NTN scenario based on transparent payload according to an embodiment of the present disclosure is shown. Figure 4 An example of a typical NTN scenario based on regeneration payload according to an embodiment of the present disclosure is shown. Figure 3 or Figure 4 The embodiments of can be combined with various embodiments of the present disclosure. Figure 3 , a satellite (or UAS platform) can establish a service link with the UE. The satellite (or UAS platform) can be connected to the gateway via a feeder link. The satellite can be connected to the data network via the gateway. The beam coverage area can refer to the area where the signal sent by the satellite can be received. Figure 4 , a satellite (or UAS platform) can establish a service link with the UE. The satellite (or UAS platform) connected to the UE can be connected to another satellite (or another UAS platform) via an inter-satellite link (ISL). The other satellite (or another UAS platform) can be connected to the gateway via a feeder link. Based on the regenerative payload, the satellite can be connected to the data network through the gateway and another satellite. If there is no ISL between the satellite and the other satellite, a feeder link between the satellite and the gateway may be required. Figure 3 and Figure 4 This is only an example of an NTN scenario, and NTN can be implemented based on various types of scenarios. For example, a satellite (or UAS platform) can implement a transparent or regenerative (with on-board processing) payload. For example, a satellite (or UAS platform) can generate multiple beams over a specified service area based on the field of view of the satellite (or UAS platform). For example, the field of view of the satellite (or UAS platform) can vary according to the on-board antenna pattern and minimum elevation angle. For example, a transparent payload may include RF filtering, frequency conversion, and amplification. Therefore, the waveform signal repeated by the payload may not be changed. For example, a regenerative payload may include RF filtering, frequency conversion and amplification, demodulation / decryption, switching and / or routing, and coding / modulation. For example, a regenerative payload may be substantially equivalent to equipping a satellite (or UAS platform) with all or part of the base station functionality.

[0080] Integrated Sensing and Communications (ISAC): Wireless sensing is a technology enabler for acquiring information about the characteristics of the environment and / or objects within it, using radio frequency to determine, for example, the distance (range), angle, or instantaneous linear velocity of an object. RF sensing capabilities can provide services for device-free object positioning, as objects do not need to be connected via a device in the network. The ability to obtain range, velocity, and angle information from RF signals can provide a wide range of new capabilities, such as various object detection and object identification (e.g., vehicles, people, animals, drones), as well as high-precision positioning, tracking, and activity recognition. For example, wireless sensing services can provide input to various verticals (e.g., unmanned aerial vehicles, smart homes, V2X, factories, railways, public safety, etc.), enabling applications such as intruder detection, assisted vehicle maneuvering and navigation, trajectory tracking, collision avoidance, traffic management, and health and activity monitoring. In some cases, wireless sensing can also use non-3GPP sensors (e.g., radar, cameras) to further support 3GPP-based sensing. For example, the operation of wireless sensing services (i.e., sensing operations) can rely on processing the transmission, reflection, and scattering of wireless sensing signals. Therefore, wireless sensing may have the opportunity to enhance the traditional system from a communication network to a wireless communication and sensing network. Figure 5 An example of a sensing operation according to an embodiment of the present disclosure is shown. Figure 5 The embodiments of can be combined with various embodiments of the present disclosure. Specifically, Figure 5 (a) shows an example of sensing with a co-located sensing receiver and sensing transmitter (eg, monostatic sensing), and Figure 5 (b) shows an example of sensing with separate sensing receivers and sensing transmitters (eg, bistatic sensing).

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

[0082] The physical layer provides information transfer services to upper layers via physical channels. The physical layer is connected to the media access control (MAC) layer, its upper layer, via transport channels. Data is transferred between the MAC and physical layers via transport channels. Transport channels are categorized based on how data is transmitted over the radio interface and the characteristics of the data being transmitted.

[0083] Data is transmitted between different physical layers (ie, a PHY layer of a transmitter and a PHY layer of a receiver) through a physical channel. The physical channel may be modulated using an Orthogonal Frequency Division Multiplexing (OFDM) scheme and uses time and frequency as radio resources.

[0084] The MAC layer provides services to the Radio Link Control (RLC) layer, a higher layer above the MAC layer, via logical channels. The MAC layer maps multiple logical channels to multiple transport channels. The MAC layer also provides logical channel multiplexing by mapping multiple logical channels to a single transport channel. The MAC layer provides data transmission services via logical channels.

[0085] The RLC layer performs concatenation, segmentation, and reassembly of radio link control service data units (RLC SDUs). To ensure the different quality of service (QoS) required for radio bearers (RBs), the RLC layer provides three types of operation modes: transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0086] The Radio Resource Control (RRC) layer is defined only in the control plane. The RRC layer controls logical channels, transport channels, and physical channels associated with the configuration, reconfiguration, and release of resource allocation (RBs). RBs are logical paths for data transfer between the UE and the network, provided by Layer 1 (i.e., the physical or PHY layer) and Layer 2 (i.e., the MAC layer, RLC layer, Packet Data Convergence Protocol (PDCP), and Service Data Adaptation Protocol (SDAP) layers).

[0087] The functions of the Packet Data Convergence Protocol (PDCP) in the user plane include transmission of user data, header compression and encryption. The functions of the Packet Data Convergence Protocol (PDCP) in the control plane include transmission and encryption / integrity protection of control plane data.

[0088] The Service Data Adaptation Protocol (SDAP) layer is defined only in the user plane. The SDAP layer performs mapping between Quality of Service (QoS) flows and Data Radio Bearers (DRBs) and QoS Flow ID (QFI) marking in both DL and UL packets.

[0089] RB configuration refers to the process of specifying radio protocol layers and channel attributes to provide a specific service and determining corresponding detailed parameters and operation methods. RBs can be classified into two types: signaling radio bearers (SRBs) and data radio bearers (DRBs). SRBs are used as a path for transmitting RRC messages in the control plane, and DRBs are used as a path for transmitting user data in the user plane.

[0090] When an RRC connection is established between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in the RRC connected (RRC_CONNECTED) state, otherwise the UE may be in the RRC idle (RRC_IDLE) state. In the case of NR, an RRC inactive (RRC_INACTIVE) state is additionally defined, and the UE in the RRC_INACTIVE state may maintain its connection with the core network while releasing its connection with the BS.

[0091] Data is sent from the network to the UE via a downlink transport channel. Examples of downlink transport channels include a broadcast channel (BCH) for transmitting system information and a downlink shared channel (SCH) for transmitting other user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services may be sent via the downlink SCH or may be sent via a separate downlink multicast channel (MCH). In addition, uplink transport channels for sending (or transmitting) data from the UE to the network include a random access channel (RACH) for sending initial control messages and an uplink shared channel (SCH) for sending other user traffic or control messages.

[0092] Examples of logical channels belonging to a higher layer of a transport channel and mapped to a transport channel may include a broadcast control channel (BCCH), a paging control channel (PCCH), a common control channel (CCCH), a multicast control channel (MCCH), a multicast traffic channel (MTCH), etc.

[0093] A radio frame can be used to perform uplink and downlink transmissions. A radio frame has a length of 10 ms and can be defined as consisting of two half frames (HFs). A half frame can include five 1 ms subframes (SFs). A subframe (SF) can be divided into one or more time slots, and the number of time slots within a subframe can be determined by the subcarrier spacing (SCS). Each time slot can include 12 or 14 OFDM (A) symbols depending on the cyclic prefix (CP).

[0094] When using a normal CP, each time slot can include 14 symbols. When using an extended CP, each time slot can include 12 symbols. Herein, a symbol may include an OFDM symbol (or a CP-OFDM symbol) and a single carrier-FDMA (SC-FDMA) symbol (or a discrete Fourier transform spread OFDM (DFT-s-OFDM) symbol).

[0095] Table 2 shown below shows the number of symbols (N) per slot based on the SCS configuration (μ) in the case of using a normal CP or an extended CP. slot symb ), the number of time slots per frame (N frame,μslot ) and the number of time slots per subframe (N subframe,μ slot ).

[0096] [Table 2]

[0097]

[0098] Figure 6 The structure of the time slot of the NR frame according to an embodiment of the present disclosure is shown. Figure 6 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0099] Reference Figure 6 , a time slot includes multiple symbols in the time domain.

[0100] A carrier may include a maximum of N BWPs (eg, 5 BWPs). Data communication may be performed via the activated BWPs. Each element may be referred to as a resource element (RE) in a resource grid, and one complex symbol may be mapped to each element.

[0101] A BWP may be a contiguous set of physical resource blocks (PRBs) within a given parameter set. A PRB may be selected from a contiguous set of common resource blocks (CRBs) for a given parameter set on a given carrier.

[0102] Figure 7 An example of a BWP according to an embodiment of the present disclosure is shown. Figure 7 The embodiments of can be combined with various embodiments of the present disclosure. Figure 7 In an embodiment of the present invention, the number of BWPs is 3.

[0103] Reference Figure 7 , Common Resource Blocks (CRBs) may be carrier resource blocks numbered from one end of the carrier frequency band to the other. Additionally, PRBs may be resource blocks numbered within each BWP. Point A may indicate a common reference point for the resource block grid.

[0104] It can be obtained by point A, the offset relative to point A (N start BWP ) and bandwidth (N size BWP ) to configure the BWP. For example, point A can be an external reference point of the PRBs of a carrier, and subcarrier 0 of all parameter sets (e.g., all parameter sets supported by the network on the corresponding carrier) is aligned in point A. For example, the offset can be the PRB distance between the lowest subcarrier in a given parameter set and point A. For example, the bandwidth can be the number of PRBs in a given parameter set.

[0105] The side link synchronization signal (SLSS) may include a primary side link synchronization signal (PSSS) and a secondary side link synchronization signal (SSSS) as a side link (SL) specific sequence. The PSSS may be referred to as a side link primary synchronization signal (S-PSS), and the SSSS may be referred to as a side link secondary synchronization signal (S-SSS). For example, an M sequence of length 127 may be used for the S-PSS, and a Gold sequence of length 127 may be used for the S-SSS. For example, the UE may use the S-PSS for initial signal detection and synchronization acquisition. For example, the UE may use the S-PSS and the S-SSS for acquisition of detailed synchronization and for detection of a synchronization signal ID.

[0106] The physical sidelink broadcast channel (PSBCH) can be a (broadcast) channel for transmitting default (system) information, which must be known by the UE before SL signal transmission / reception. For example, the default information can be information related to SLSS, duplex mode (DM), time division duplex (TDD) uplink / downlink (UL / DL) configuration, information related to resource pool, type of application related to SLSS, subframe offset, broadcast information, etc. For example, in order to evaluate PSBCH performance, in NR V2X, the payload size of PSBCH can be 56 bits, including a 24-bit cyclic redundancy check (CRC).

[0107] S-PSS, S-SSS and PSBCH can be included in a block format that supports periodic transmission (e.g., SL synchronization signal (SS) / PSBCH block, hereinafter, sidelink synchronization signal block (S-SSB)). The S-SSB can have the same parameter set (i.e., SCS and CP length) as the physical sidelink control channel (PSCCH) / physical sidelink shared channel (PSSCH) in the carrier, and the transmission bandwidth can exist within the (pre-) configured sidelink (SL) BWP. For example, the S-SSB can have a bandwidth of 11 resource blocks (SBs). For example, the PSBCH can exist across 11 RBs. In addition, the frequency position of the S-SSB can be (pre-) configured. Therefore, the UE does not have to perform hypothesis detection at the frequency to discover the S-SSB in the carrier.

[0108] In the present disclosure, PSCCH may be replaced by a control channel, a physical control channel, a control channel associated with a sidelink, a physical control channel associated with a sidelink, etc. In the present disclosure, PSSCH may be replaced by a shared channel, a physical shared channel, a shared channel associated with a sidelink, a physical shared channel associated with a sidelink, etc.

[0109] Figure 8 A process of performing V2X or SL communication by a UE based on a resource allocation mode according to an embodiment of the present disclosure is shown. Figure 8 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0110] Reference Figure 8 (a), in resource allocation mode 1, the base station may schedule SL resources to be used by the UE for SL transmission. For example, in step S800, the base station may send information related to the SL resources and / or information related to the UL resources to the first UE. For example, the UL resources may include PUCCH resources and / or PUSCH resources. For example, the UL resources may be resources used to report SL HARQ feedback to the base station.

[0111] For example, the first UE may receive information related to dynamic grant (DG) resources and / or information related to configuration grant (CG) resources from the base station. For example, the CG resources may include CG type 1 resources or CG type 2 resources. In the present disclosure, the DG resources may be resources configured / allocated to the first UE by the base station through downlink control information (DCI). In the present disclosure, the CG resources may be (periodic) resources configured / allocated to the first UE by the base station through DCI and / or RRC messages. For example, in the case of CG type 1 resources, the base station may send an RRC message including information related to the CG resources to the first UE. For example, in the case of CG type 2 resources, the base station may send an RRC message including information related to the CG resources to the first UE, and the base station may send a DCI related to the activation or release of the CG resources to the first UE.

[0112] In step S810, the first UE may send a PSCCH (e.g., sidelink control information (SCI) or first-level SCI) to the second UE based on resource scheduling. In step S820, the first UE may send a PSSCH (e.g., second-level SCI, MAC PDU, data, etc.) related to the PSCCH to the second UE. In step S830, the first UE may receive a PSFCH related to the PSCCH / PSSCH from the second UE. For example, HARQ feedback information (e.g., NACK information or ACK information) may be received from the second UE via the PSFCH. In step S840, the first UE may send / report the HARQ feedback information to the base station via the PUCCH or PUSCH. For example, the HARQ feedback information reported to the base station may be information generated by the first UE based on the HARQ feedback information received from the second UE. For example, the HARQ feedback information reported to the base station may be information generated by the first UE based on a preconfigured rule. For example, the DCI may be DCI for SL scheduling.

[0113] Reference Figure 8(b) in resource allocation mode 2, the UE may determine the SL transmission resources within the SL resources configured by the base station / network or the preconfigured SL resources. For example, the configured SL resources or the preconfigured SL resources may be a resource pool. For example, the UE may autonomously select or schedule resources for SL transmission. For example, the UE may perform SL communication by autonomously selecting resources within the configured resource pool. For example, the UE may autonomously select resources within a selection window by performing a sensing process and a resource (re)selection process. For example, sensing may be performed in units of subchannels. For example, in step S810, the first UE, which has selected resources from the resource pool by itself, may send a PSCCH (e.g., sidelink control information (SCI) or a first-level SCI) to a second UE by using the resources. In step S820, the first UE may send a PSSCH (e.g., a second-level SCI, a MAC PDU, data, etc.) related to the PSCCH to the second UE. In step S830, the first UE may receive a PSFCH related to the PSCCH / PSSCH from the second UE.

[0114] Reference Figure 8 (a) or (b), for example, the first UE may send the SCI to the second UE via the PSCCH. Alternatively, for example, the first UE may send two consecutive SCIs (e.g., level 2 SCIs) to the second UE via the PSCCH and / or PSSCH. In this case, the second UE may decode the two consecutive SCIs (e.g., level 2 SCIs) to receive the PSSCH from the first UE. In the present disclosure, the SCI sent via the PSCCH may be referred to as the first SCI, the first SCI, the first level SCI, or the first level SCI format, and the SCI sent via the PSSCH may be referred to as the second SCI, the second SCI, the second level SCI, or the second level SCI format.

[0115] Hereinafter, an example of SCI format 1-A will be described.

[0116] SCI format 1-A is used for scheduling PSSCH and the second level SCI on PSSCH.

[0117] The following information is sent via SCI Format 1-A:

[0118] - Priority - 3 bits

[0119] - Frequency Resource Assignment - When the value of the higher layer parameter sl-MaxNumPerReserve is configured as 2, ceiling(log2(N SL subChannel (N SL subChannel+1) / 2)) bits; otherwise, when the value of the high-level parameter sl-MaxNumPerReserve is configured as 3, the ceiling log2(N SL subChannel (N SL subChannel +1)(2N SL subChannel +1) / 6) bits.

[0120] - Time resource assignment - 5 bits when the value of the higher-layer parameter sl-MaxNumPerReserve is configured as 2; otherwise, 9 bits when the value of the higher-layer parameter sl-MaxNumPerReserve is configured as 3

[0121] -Resource Reservation Period - If the higher-level parameter sl-MultiReserveResource is configured, the ceiling(log2N rsv_period ) bits, where N rsv_period is the number of entries in the higher-level parameter sl-ResourceReservePeriodList; otherwise, 0

[0122] -DMRS pattern -ceiling(log2 N pattern ) bits, where N pattern The number of DMRS patterns configured by the higher-layer parameter sl-PSSCH-DMRS-TimePatternList

[0123] - Second level SCI format - 2 bits, as defined in Table 3

[0124] - Beta_offset indicator - 2 bits, as provided by the higher layer parameter sl-BetaOffsets2ndSCI

[0125] -Number of DMRS ports - 1 bit, as defined in Table 4

[0126] - Modulation and coding scheme - 5 bits

[0127] - Additional MCS table indicator - 1 bit if one MCS table is configured by the higher-layer parameter sl-Additional-MCS-Table; 2 bits if two MCS tables are configured by the higher-layer parameter sl-Additional-MCS-Table; otherwise, 0 bit

[0128] -PSFCH overhead indication - 1 bit if the higher layer parameter sl-PSFCH-Period = 2 or 4; otherwise, 0 bit

[0129] - Reserved - The number of bits determined by the higher layer parameter sl-NumReservedBits, whose value is set to zero.

[0130] [Table 3]

[0131] The value of the second-level SCI format field Second level SCI format 00 SCI Format 2-A 01 SCI Format 2-B 10 reserve 11 reserve

[0132] [Table 4]

[0133] The value of the DMRS Port Number field Antenna port 0 1000 1 1000 and 1001

[0134] Hereinafter, an example of SCI format 2-A will be described.

[0135] SCI format 2-A is used for decoding of PSSCH, where a HARQ operation is used when HARQ-ACK information includes ACK or NACK, when HARQ-ACK information includes only NACK, or when there is no feedback of HARQ-ACK information.

[0136] The following information is sent via SCI Format 2-A:

[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 digits

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

[0143] - Broadcast Type Indicator - 2 bits, as defined in Table 5

[0144] -CSI request - 1 bit

[0145] [Table 5]

[0146] The value of the broadcast type indicator Broadcast Type 00 broadcast 01 Multicast when HARQ-ACK information includes ACK or NACK 10 Unicast 11 Multicast when HARQ-ACK information includes only NACKs

[0147] Hereinafter, an example of SCI format 2-B will be described.

[0148] SCI format 2-B is used for decoding of the PSSCH, in which a HARQ operation is used when HARQ-ACK information includes only NACK, or when there is no feedback of HARQ-ACK information.

[0149] The following information is sent via SCI Format 2-B:

[0150] -HARQ process number - 4 bits

[0151] - New data indicator - 1 bit

[0152] - Redundancy version - 2 bits

[0153] - Source ID - 8 bits

[0154] -Destination ID - 16 digits

[0155] -HARQ feedback enable / disable indicator - 1 bit

[0156] -Region ID - 12 digits

[0157] -Communication range requirement - 4 bits determined by the higher-layer parameter sl-ZoneConfigMCR-Index

[0158] An example of SCI format 2-D is described below.

[0159] SCI format 2-D is used for decoding of PSSCH and scheduling of SLPRS for the shared SL PRS resource pool.

[0160] The following information is sent via SCI format 2-D.

[0161] SL PRS Resource ID - [log2NSL-PRS] bits, where NSL-PRS is the total number of SL PRS resource IDs within the slots in the shared SL PRS resource pool and is provided by sl-PrsResources-Shared-SL-PRS-RP.

[0162] SL PRS Request - 1 bit when provided by the higher layer parameter sl-SCI-based-SL-PRS-Tx-Trigger-SCI2-D; otherwise, 0 bit.

[0163] Embedded SCI format - 2 bits.

[0164] Embedded SCI Format Payload - Number of bits determined according to Table 6. This field may be set to the payload associated with the embedded SCI format indicated by the Embedded SCI Format defined in Table 6.

[0165] [Table 6]

[0166]

[0167] Reference Figure 8 (a) or (b), in step S830, the first UE may receive the PSFCH. For example, the first UE and the second UE may determine the PSFCH resources, and the second UE may use the PSFCH resources to send HARQ feedback to the first UE.

[0168] Reference Figure 8 (a), in step S840, the first UE may send SL HARQ feedback to the base station via PUCCH and / or PUSCH.

[0169] Figure 9 An example of an architecture in a 5G system according to an embodiment of the present disclosure is shown, in which architecture positioning of a UE connected to a next generation radio access network (NG-RAN) or E-UTRAN is possible. Figure 9 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0170] Reference Figure 9 , the AMF may receive a request for location service related to a specific target UE from a different entity such as the Gateway Mobile Location Center (GMLC) or may determine that the location service is to be started in the AMF itself instead of the specific target UE. The AMF may then send a location service request to the Location Management Function (LMF). Upon receiving the location service request, the LMF may process the location service request and return a processing request including the estimated location of the UE, etc. to the AMF. Meanwhile, if the location service request is received from a different entity such as the GMLC other than the AMF, the AMF may pass the processing request received from the LMF to the different entity.

[0171] The next generation evolved NB (ng-eNB) and gNB are network elements of the NG-RAN that can provide measurement results for position estimation, can measure radio signals for target UEs, and can deliver the resulting values ​​to the LMF. In addition, the ng-eNB can control several transmission points (TPs) such as the remote radio head that supports the positioning reference signal (PRS)-based beacon system for E-UTRA or PRS-dedicated TPs.

[0172] The LMF may be connected to the Enhanced Serving Mobile Location Center (E-SMLC) and the E-SMLC may allow the LMF to access the E-UTRAN. For example, the E-SMLC may allow the LMF to support Observed Time Difference of Arrival (OTDOA), one of the positioning methods of the E-UTRAN, by using downlink measurement results obtained by the target UE through signals transmitted from the gNB and / or PRS dedicated TP in the E-UTRAN.

[0173] At the same time, the LMF can be connected to the SUPL Location Platform (SLP). The LMF can support and manage different location determination services for the corresponding target UE. The LMF can interact with the serving ng-eNB or serving gNB for the target UE to obtain the UE's location measurement results. For the positioning of the target UE, the LMF can determine the positioning method based on the location service (LCS) client type, the requested quality of service (QoS), the UE positioning capabilities, the gNB positioning capabilities, and the ng-eNB positioning capabilities, and can apply such positioning methods to the serving gNB and / or serving ng-eNB. In addition, the LMF can determine additional information such as the position estimate of the target UE and the accuracy of the position estimate and velocity. The SLP is the secure user plane location (SUPL) entity responsible for positioning through the user plane.

[0174] The UE may measure downlink signals through NG-RAN, E-UTRAN and / or other sources such as: different global navigation satellite systems (GNSS) and terrestrial beacon systems (TBS), wireless local access network (WLAN) access points, Bluetooth beacons, UE air pressure sensors, etc. The UE may include an LCS application. The UE may communicate with a network that the UE can access, or the LCS application may be accessed by another application included in the UE. The LCS application may include measurement and calculation functions required to determine the position of the UE. For example, the UE may include an independent positioning function such as a global positioning system (GPS) and may report the position of the UE independent of NG-RAN transmissions. Positioning information obtained independently in this way may be used as auxiliary information for positioning information obtained from the network.

[0175] Figure 10 An example of implementing a network for measuring the location of a UE according to an embodiment of the present disclosure is shown. Figure 10 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0176] When the UE is in the Connection Management (CM)-Idle state, if the AMF receives a location service request, the AMF may establish a signaling connection with the UE and may request the network to trigger a service to allocate a specific serving gNB or ng-eNB. Figure 10 This operation process is omitted in Figure 10 It is assumed that the UE is in connected mode. However, due to signaling and data deactivation, the signaling connection may be released by the NG-RAN while performing the positioning procedure.

[0177] Will refer to Figure 10The network operation process for measuring the location of the UE is described in detail. In step S1010, the 5GC entity such as the GMLC may request the serving AMF to provide a location service for measuring the location of the target UE. However, even if the GMLC does not request the location service, based on step S1015, the serving AMF may determine that the location service is required for measuring the location of the target UE. For example, in order to measure the location of the UE for an emergency call, the serving AMF may determine to directly perform the location service.

[0178] Thereafter, the AMF may send a location service request to the LMF based on step S1020, and the LMF may initiate a location procedure to obtain location measurement data or location measurement assistance data with the serving ng-eNB and serving gNB based on step S1030. Furthermore, based on step S1035, the LMF may initiate a location procedure for downlink positioning with the UE. For example, the LMF may send assistance data defined in 3GPP TS 36.355 or obtain a location estimate or location measurement. Step S1035 may be performed in addition to or instead of step S1030.

[0179] In step S1040, the LMF may provide a location service response to the AMF. In addition, the location service response may include information about whether the UE's location estimation is successful and the UE's location estimation value. Figure 10 In step S1050, the AMF may transmit the location service response to the 5GC entity, such as the GMLC, and if initiated by step S1015 Figure 10 During the process, in step S1055, the AMF may use the location service response to provide location services related to emergency calls, etc.

[0180] Figure 11 An example of a protocol layer for supporting LTE Positioning Protocol (LPP) message transmission between an LMF and a UE according to an embodiment of the present disclosure is shown. Figure 11 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0181] LPP PDU can be sent between AMF and UE via NAS PDU. Figure 11, LPP can terminate between a target device (e.g., a UE in the control plane or a SUPL-capable device (SET) in the user plane) and a location server (e.g., a LMF in the control plane and an SLP in the user plane). LPP messages can be delivered in the form of transparent PDUs over intermediate network interfaces using appropriate protocols such as: NG Application Protocol (NGAP) over the NG-Control (NG-C) interface and NAS / RRC over the NR-Uu interface. The LPP protocol can enable positioning for NR and LTE using various positioning methods.

[0182] For example, based on the LPP protocol, the target device and the location server can exchange mutual capability information, assistance data for positioning, and / or location information. In addition, LPP messages can be used to indicate the exchange of error information and / or the interruption of the LPP process.

[0183] Figure 12 An example of protocol layers for supporting NR Positioning Protocol A (NRPPa) PDU transmission between LMF and NG-RAN nodes based on an embodiment of the present disclosure is shown. Figure 12 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0184] Reference Figure 12 , NRPPa can be used for information exchange between NG-RAN nodes and LMF. Specifically, NRPPa can exchange enhanced cell IDs (E-CIDs) for measurement, data for supporting OTDOA positioning methods, and cell IDs, cell location IDs, etc. for NR cell ID positioning methods sent from ng-eNB to LMF. Even if there is no information about the associated NRPPa transaction, the AMF can route NRPPa PDUs based on the routing ID of the associated LMR through the NG-C interface.

[0185] The procedures of the NRPPa protocol for location and data collection can be categorized into two types. The first type is a UE-related procedure for transferring information about a specific UE (e.g., location measurement information, etc.), while the second type is a non-UE-related procedure for transferring information applicable to NG-RAN nodes and related TPs (e.g., gNB / ng-eNB / TP timing information, etc.). Both types of procedures can be supported independently or simultaneously.

[0186] Meanwhile, examples of positioning methods supported in NG-RAN may include GNSS, OTDOA, enhanced cell ID (E-CID), air pressure sensor positioning, WLAN positioning, Bluetooth positioning and terrestrial beacon system (TBS), uplink time difference of arrival (UTDOA), and the like.

[0187] (1) OTDOA (Observed Time Difference of Arrival)

[0188] Figure 13 An observed time difference of arrival (OTDOA) positioning method based on an embodiment of the present disclosure is shown. Figure 13 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0189] Reference Figure 13 The OTDOA positioning method uses the measured timing of downlink signals received by the UE from the eNB, ng-eNB, and multiple TPs including the PRS-dedicated TP. The UE measures the timing of the received downlink signals by using the location assistance data received from the location server. In addition, the UE's position can be determined based on such measurement results and the geometric coordinates of neighboring TPs.

[0190] A UE connected to a gNB may request measurement gaps from a TP for OTDOA measurements. If the UE cannot identify the single frequency network (SFN) of at least one TP in the OTDOA assistance data, the UE may use autonomous gaps to obtain the SNF of the OTDOA reference cell before requesting measurement gaps to perform reference signal time difference (RSTD) measurements.

[0191] In this article, RSTD can be defined based on the minimum relative time difference between the boundaries of two subframes received from the reference cell and the measurement cell, respectively. In other words, RSTD can be calculated based on the relative time difference between the start time of the subframe received from the measurement unit and the start time of the subframe of the reference unit closest to the start time of the subframe received from the measurement unit. At the same time, the reference cell can be selected by the UE.

[0192] For correct OTDOA measurement, it may be necessary to measure the time of arrival (TOA) of signals received from three or more geographically distributed TPs or BSs. For example, the TOA can be measured for each of TP1, TP2, and TP3, and the RSTD of TP1-TP2, the RSTD of TP2-TP3, and the RSTD of TP3-TP1 can be calculated for the three TOAs. Based on this, a geometric hyperbola can be determined, and the point where these hyperbolas intersect can be estimated as the position of the UE. In this case, since the accuracy and / or uncertainty of each TOA measurement may exist, the estimated position of the UE can be referred to as a specific range based on the measurement uncertainty.

[0193] For example, the RSTD of the two TPs may be calculated based on Equation 1.

[0194] [Formula 1]

[0195]

[0196] In this paper, c can be the speed of light, {x t ,y t} can be the (unknown) coordinates of the target UE, {x i ,y i} may be the coordinates of a (known) TP, and {x1, y1} may be the coordinates of a reference TP (or another TP). i -T1) is called the "real time difference (RTD)" which is the transmission time offset between two TPs, and n i , n1 can represent a value related to the UE TOA measurement error.

[0197] (2) E-CID (Enhanced Cell ID)

[0198] In the Cell ID (CID) positioning method, the UE's location can be measured using the geographic information of the UE's serving ng-eNB, serving gNB, and / or serving cell. For example, the geographic information of the serving ng-eNB, serving gNB, and / or serving cell can be obtained through paging, registration, etc.

[0199] At the same time, in addition to the CID positioning method, the E-CID positioning method can also use additional UE measurements and / or NG-RAN radio resources to improve the UE position estimate. In the E-CID positioning method, although some of the same measurement methods used in the measurement control system of the RRC protocol can be used, in general, additional measurements are not performed solely for the UE's position measurement. In other words, measurement configuration or measurement control messages may not be additionally provided to measure the UE's position. In addition, the UE may not expect to request additional measurement operations solely for position measurement and may report measurement values ​​obtained using measurement methods that the UE can generally perform measurements on.

[0200] For example, the serving gNB may implement the E-CID positioning method using E-UTRA measurements provided from the UE.

[0201] Examples of measurement elements that can be used for E-CID positioning may be as follows.

[0202] -UE measurements: E-UTRA Reference Signal Received Power (RSRP), E-UTRA Reference Signal Received Quality (RSRQ), UE E-UTRA Rx-Tx Time Difference, GSM EDGE Random Access Network (GERAN) / WLAN Reference Signal Strength Indicator (RSSI), UTRAN Common Pilot Channel (CPICH) Received Signal Code Power (RSCP), UTRAN CPICH Ec / Io

[0203] -E-UTRAN measurements: ng-eNB Rx-Tx time difference, timing advance (TADV), angle of arrival (AoA).

[0204] Herein, TADV can be classified into Type 1 and Type 2 as follows.

[0205] TADV type 1 = (ng-eNB Rx-Tx time difference) + (UE E-UTRA Rx-Tx time difference)

[0206] TADV type 2 = ng-eNB Rx-Tx time difference

[0207] At the same time, AoA can be used to measure the direction of the UE. AoA can be defined as the estimated angle relative to the UE's position in a counterclockwise direction from the BS / TP. In this case, the geographic reference direction can be north. The BS / TP can use uplink signals such as the sounding reference signal (SRS) and / or the demodulation reference signal (DMRS) for AoA measurement. In addition, the larger the antenna array is arranged, the higher the measurement accuracy of AoA. When the element antenna array is arranged at the same interval, the signals received from adjacent antennas can have a constant phase rotation.

[0208] (3) UTDOA (Uplink Time Difference of Arrival)

[0209] UTDOA is a method for determining the UE's location by estimating the arrival time of the SRS. When the estimated SRS arrival time is calculated, the UE's location can be estimated by using the serving cell as a reference cell via the arrival time difference relative to another cell (or BS / TP). To implement UTDOA, the E-SMLC can indicate the serving cell of the target UE to indicate the SRS transmission to the target UE. In addition, the E-SMLC can provide configurations such as whether the SRS is periodic / aperiodic, bandwidth, frequency / group / sequence hopping, etc.

[0210] (4) RTT (Round Trip Time)

[0211] RTT is a positioning technique that can measure the distance between two entities, even if the time between the target entity and the server entity is not synchronized. If RTT is performed using multiple server entities, the distance to each server entity can be measured separately. In addition, by drawing circles using the distances measured from each server entity, the target entity can be absolutely located at the intersection of the circles. For example, this can be called multi-RTT.

[0212] The RTT between two entities is calculated as follows: Entity #1 can transmit PRS #1 at t1, and entity #2 can receive PRS #1 at t2. After entity #2 receives RRS #1, entity #2 can transmit PRS #2 at t3, and entity #1 can receive PRS #2 at t4. In this case, the distance D between the two entities can be obtained as follows.

[0213] [Formula 2]

[0214] D = c × {(t4 - t1) - (t3 - t2)} / 2 (where C is the speed of light)

[0215] For the RTT between the UE and the gNB, the distance between the UE and the gNB can be derived based on Equation 2 using the UE Rx-Tx time difference and the gNBRx-Tx time difference in the following table.

[0216] (5) Bilateral RTT

[0217] Two-sided RTT is a positioning technique 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.

[0218] The method for performing a bilateral round trip time (RTT) between two entities is as follows.

[0219] Figure 14 A two-sided RTT according to an embodiment of the present disclosure is shown. Figure 14 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0220] For example, bilateral RTT is widely used in ultra-wideband (UWB) positioning and can reduce the impact of clock errors. Figure 14 , the propagation delay T can be measured twice (for example, T round1 、T round2 、T reply1 、T reply2 For example, the propagation delay T can be calculated based on Equation 3.

[0221] [Formula 3]

[0222]

[0223] In addition, T can be obtained based on Equation 4 round1 *T round2 -T reply1 *T reply2 .

[0224] [Formula 4]

[0225]

[0226] Therefore, the propagation delay T can be estimated as shown in Equation 5.

[0227] [Formula 5]

[0228]

[0229] In this case, the error in propagation delay estimation due to the clock error can be obtained based on Equation 6.

[0230] [Formula 6]

[0231]

[0232] Among them, e UE1 and e UE2 It can be the clock offset between UE1 and UE2;

[0233] It can be the estimated propagation delay between UE1 and UE2.

[0234] For example, Table 7 shows an example of Reference Signal Time Difference (RSTD). The RSTD in Table 7 can be applied to SL positioning.

[0235] [Table 7]

[0236]

[0237] An example of downlink PRS reference signal received power (DL-PRS RSRP) is shown in Table 8. The DL-PRS RSRP in Table 8 may be applied to SL positioning.

[0238] [Table 8]

[0239]

[0240] Table 9 shows an example of downlink reference signal time difference (DL-RSTD). The DL RSTD in Table 9 can be applied to SL positioning.

[0241] [Table 9]

[0242]

[0243] Table 10 shows an example of UE Rx-Tx time difference. The UE Rx-Tx time difference in Table 10 can be applied to SL positioning.

[0244] [Table 10]

[0245]

[0246]

[0247] Table 11 shows the uplink relative time of arrival (UL RTOA) (T UL-RTOA ) example. The UL RTOA in Table 11 can be applied to SL positioning.

[0248] [Table 11]

[0249]

[0250] Table 12 shows an example of the gNB Rx-Tx time difference. The gNB Rx-Tx time difference in Table 12 can be applied to SL positioning.

[0251] [Table 12]

[0252]

[0253] Table 13 shows an example of UL angle of arrival (ULAoA). The ULAoA in Table 13 can be applied to SL positioning.

[0254] [Table 13]

[0255]

[0256] Table 14 shows an example of UL SRS reference signal received power (UL SRS-RSRP). The UL SRS-RSRP in Table 14 can be applied to SL positioning.

[0257] [Table 14]

[0258]

[0259] Various embodiments of the present disclosure can be applied based on Tables 15 to 30.

[0260] [Table 15]

[0261]

[0262]

[0263] [Table 16]

[0264]

[0265]

[0266] [Table 17]

[0267]

[0268] [Table 18]

[0269]

[0270]

[0271] [Table 19]

[0272]

[0273]

[0274] For example, according to SCS, Table 20 may represent T^SL_proc,0.

[0275] [Table 20]

[0276]

[0277] For example, Table 21 can represent T^SL_proc,1 according to SCS.

[0278] [Table 21]

[0279]

[0280]

[0281] [Table 22]

[0282]

[0283]

[0284] [Table 23]

[0285]

[0286]

[0287]

[0288] [Table 24]

[0289]

[0290]

[0291]

[0292] [Table 25]

[0293]

[0294]

[0295] [Table 26]

[0296]

[0297]

[0298] [Table 27]

[0299]

[0300]

[0301] [Table 28]

[0302]

[0303]

[0304] For example, Table 29 may represent a channel access priority class (CAPC).

[0305] [Table 29]

[0306] Channel access priority level (p) <![CDATA[m p ]]> <![CDATA[CW min,p ]]> <![CDATA[CW max,p ]]> <![CDATA[T mcot,p ]]> <![CDATA[Allowed CW p Size]]> 1 1 3 7 2ms {3,7} 2 1 7 15 3ms {7,15} 3 3 15 63 8ms or 10ms {15,31,63} 4 7 15 1023 8ms or 10ms {15,31,63,127,255,511,1023}

[0307] [Table 30]

[0308]

[0309]

[0310] According to one embodiment of the present disclosure, a one-to-one correspondence between two resource pools may be defined. For example, it is assumed that a control channel (PSCCH) associated with a reference signal (eg, SL PRS) is transmitted in a first resource pool, and the reference signal is transmitted in a second resource pool.

[0311] For example, in the first resource pool, a control channel may be sent one per shared channel (eg, SCH or PSSCH).

[0312] For example, the PSCCH index sent by the shared channel may have a one-to-one correspondence with the reference signal resource index (or ID) sent in the second resource pool.

[0313] For example, here, the control channel index may match the reference signal resource index. In this case, when the control channel associated with the reference signal and the control channel for SL communication (e.g., PSCCH) are transmitted in an FDM manner (FDMed) in the first resource pool, the control channel index associated with the reference signal may have only a value within the range of 0 to #reference signal resources - 1 in order to match the control channel index with the reference signal index.

[0314] For example, a control channel index can be mapped to a reference signal resource index using an arbitrary one-to-one mapping function f. In this case, for example, when a control channel associated with a reference signal and a control channel used for SL communication are transmitted in an FDM manner in the first resource pool, a continuous number of # reference signal resources can be mapped one-to-one to the reference signal resource to match the control channel index with the reference signal index. For example, the control channel index associated with the reference signal can have only values ​​within the range of 0 to # reference signal resources - 1.

[0315] -Alternatively, for example, if the control channel associated with the reference signal and the control channel for SL communication are transmitted in an FDM manner in the first resource pool, in order to match the control channel index with the reference signal index, it can be assumed that only a hypothetical control channel index of the control channel associated with the reference signal is included, and the virtual control channel index can be matched with the reference signal resource index.

[0316] At the same time, when the resource pool for sending a reference signal (e.g., SL PRS) used for positioning (e.g., SL positioning) is the same as or different from the resource pool for sending a channel / signal associated with the reference signal (e.g., SL PRS), it is necessary to define a transmission power control method for the reference signal (e.g., SL PRS).

[0317] The present disclosure proposes a method and operation for controlling the transmit power of a reference signal (eg, SL PRS) based on the measurement of a reliable path loss under the above-mentioned resource pool condition, as well as an apparatus supporting the method and operation.

[0318] For example, elements / parameters for service type (and / or (LCH or service) priority and / or QOS requirements (e.g., latency, reliability, minimum communication range) and / or PQI parameters) (and / or HARQ feedback enabled (and / or disabled) LCH / MAC PDU (transmission) and / or CBR measurement of resource pool and / or SL broadcast type (e.g., unicast, multicast, broadcast) and / or SL multicast HARQ feedback options (e.g., NACK feedback only, ACK / NACK feedback, NACK feedback only based on TX-RX distance) and / or SL mode 1CG type (e.g., SL CG type 1 / 2) and / or SL mode type (e.g., mode 1 / 2) and / or resource pool and / or resource pool of PSFCH resource configuration and / or source (L2) ID (and / or destination (L2) ID) and / or PC5RRC connection / link and / or SL link and / or connection state (with base station) (e.g., RRC connection state, idle state, inactive state) and / or SL HARQ process (ID) and / or SL HARQ process (ID) (of transmitting UE or receiving UE) whether SL is performed DRX operation and / or whether it is a power saving (transmitting or receiving) UE and / or (from the perspective of a specific UE) a situation when PSFCH transmission and PSFCH reception (and / or multiple PSFCH transmissions (exceeding UE capabilities)) overlap (and / or a situation where PSFCH transmission (and / or PSFCH reception) is omitted) and / or a situation where the receiving UE actually (successfully) receives the PSCCH (and / or PSSCH) (re)transmission from the transmitting UE, etc.), at least one (or each of them), whether the rule is applied (and / or the parameter values ​​related to the proposed method / rule of the present disclosure) can be specifically (or differently or independently) configured / allowed. In addition, in the present disclosure, the wording of "configuration" (or "designation") can be expanded and interpreted as a form in which the base station notifies the UE through a predefined (physical layer or higher layer) channel / signal (e.g., SIB, RRC, MAC CE) (and / or a form provided by preconfiguration and / or a form in which the UE notifies other UEs through a predefined (physical layer or higher layer) channel / signal (e.g., SL MAC CE, PC5 RRC)), etc. In addition, in the present disclosure, the wording of "PSFCH" can be expanded and interpreted as "(NR or LTE) PSSCH (and / or (NR or LTE) PSCCH (and / or (NR or LTE) SL SSB (and / or UL channel / signal))". Furthermore, the methods proposed in the present disclosure can be used in combination with each other (in a new type of manner).

[0319] For example, the term "specific threshold value" below may refer to a threshold value predefined or (pre)configured by a higher layer (including an application layer) of a network, a base station, or a UE. Hereinafter, the term "specific configuration value" may refer to a value predefined or (pre)configured by a higher layer (including an application layer) of a network, a base station, or a UE. Hereinafter, "configured by the network / base station" may refer to an operation in which a base station (pre)configures a UE via higher layer RRC signaling, configures / signals a UE via a MAC CE, or signals a UE via a DCI.

[0320] In the following disclosure, the following terms are used.

[0321] LMF – Location Management Function

[0322] UE-triggered SL positioning – Sidelink (SL) positioning where the procedure is triggered by the UE

[0323] gNB / LMF triggered SL positioning – where the process is triggered by gNB / LMF

[0324] UE-controlled SL positioning – SL positioning where the SL positioning group is created by the UE

[0325] gNB-controlled SL positioning – where the SL positioning group is created by the gNB

[0326] UE-based SL positioning – SL positioning where the UE position is calculated by the UE

[0327] UE-assisted SL positioning – SL positioning where the UE position is calculated by the gNB / LMF

[0328] SL positioning group – UEs participating in SL positioning

[0329] Target UE (T-UE) – the UE whose location is calculated

[0330] Server UE (S-UE) – UE that assists T-UE positioning

[0331] Anchor UE – UE that assists T-UE positioning

[0332] MG – Measurement gaps that allow only reference signals (e.g., SL PRS) to be transmitted

[0333] MW – Measurement Window, where both SL data and reference signals (e.g., SL PRS) can be sent in a multiplexed manner

[0334] SL PRS - Sidelink Positioning Reference Signal

[0335] CCH - Control Channel

[0336] IUC message - Inter-UE coordination message. It is a message received by a transmitting UE from another UE including a receiving UE, and may refer to a message including information on a preferred resource set suitable for the transmitting UE to transmit to the receiving UE and / or a non-preferred resource set not suitable for the transmitting UE to transmit.

[0337] According to an embodiment of the present disclosure, the SL PRS transmission resources may consist of an SLPRS resource set including the following information: Alternatively, for example, the information related to the SL PRS transmission resources may include part or all of the following information.

[0338] 1.SL PRS resource set ID

[0339] 2. SL PRS resource ID list: SL PRS resource ID list in the SL PRS resource set

[0340] 3. SL PRS resource type: can be configured as periodic, aperiodic, semi-persistent or on-demand.

[0341] 4. Alpha value for SL PRS power control

[0342] 5. P0 value for SL PRS power control

[0343] 6. Path loss reference for SL PRS power control: can be configured as SL synchronization signal block (SSB), downlink (DL) PRS, uplink (UL) sounding reference signal (SRS), SL SRS for positioning, PSCCH DMRS, PSSCH DMRS, PSFCH or SL CSIRS, etc.

[0344] According to an embodiment of the present disclosure, the SL PRS resource set may be composed of SL PRS resources including the following information: Alternatively, for example, the information related to the SL PRS transmission resources may include part or all of the following information.

[0345] 1.SL PRS resource ID

[0346] 2. SL PRS comb size: the interval between REs that transmit SL PRS within a symbol.

[0347] 3. SL PRS comb offset: The index of the RE that initially transmits the SL PRS within the first SL PRS symbol.

[0348] 4. SL PRS comb cyclic shift: cyclic shift used to generate the sequence constituting the SL PRS.

[0349] 5. SL PRS starting position: The index of the first symbol in which SL PRS is transmitted in a time slot.

[0350] 6. SL PRS# symbols: the number of symbols that make up the SL PRS in one time slot

[0351] 7. Frequency domain shift: The position (index) of the lowest frequency at which SL PRS is transmitted in the frequency domain

[0352] 8.SL PRS BW: Frequency bandwidth used for SL PRS transmission

[0353] 9. SL PRS resource type: can be configured as periodic, aperiodic, semi-persistent or on-demand.

[0354] 10. SL PRS periodicity: The time domain period between SL PRS resources, and has the physical or logical time slot unit of the resource pool in which the SL PRS is transmitted.

[0355] 11. SL PRS Offset: A reference timing reference, a time domain offset relative to the start of the first SL PRS resource, and has units of physical or logical time slots of the resource pool in which the SL PRS is transmitted. For example, the reference timing can be SFN=0, DFN=0, or the time of successful reception or decoding of the RRC / MAC CE / DCI / SCI associated with the SL PRS resource.

[0356] 12.SL PRS Sequence ID

[0357] 13.SL PRS spatial relationship: can be configured as SL SSB, DL PRS, UL SRS, UL SRS for positioning, PSCCH DMRS, PSSCH DMRS, PSFCH or SL CSI RS.

[0358] 14. SL PRS CCH: SL PRS control channel. For example, SL PRS resource configuration information and resource location can be signaled via SL PRS CCH.

[0359] For example, when performing positioning (e.g., SL positioning), a reference signal (e.g., SL PRS) and an inter-UE physical channel (e.g., PSCCH / PSSCH) associated with the reference signal (e.g., SL PRS) may be transmitted in the same resource pool or in different resource pools. That is, for example, the reference signal (e.g., SL PRS) may be transmitted in a resource pool dedicated to positioning (e.g., SL positioning), while the inter-UE physical channel (e.g., PSCCH / PSSCH) associated with the reference signal (e.g., SL PRS) may be transmitted in a shared resource pool shared with inter-UE (e.g., SL) communication.

[0360] For example, the inter-UE physical channel may include inter-UE (e.g., SL) communication channels / signals and / or positioning trigger / control information related to reference signals (e.g., SL PRS), inter-UE control information (e.g., SCI), measurement results / location information, retransmission of reference signals (e.g., SL PRS), etc.

[0361] For example, the transmit power of a reference signal (e.g., SL PRS) may be controlled based on an inter-UE (e.g., SL) path loss based on feedback of an RSRP measurement value of a reference signal (e.g., SL PRS) transmitted in association with a positioning (e.g., SL positioning) associated with the reference signal (e.g., SL PRS), which signal is sent to a UE having a destination ID associated with the transmission of the reference signal (e.g., SLPRS).

[0362] For example, the transmit power of a reference signal (e.g., SL PRS) may be controlled based on an inter-UE (e.g., SL) path loss based on feedback of an RSRP measurement value of a reference signal (e.g., SLPRS) sent in association with a positioning (e.g., SL positioning) associated with the reference signal (e.g., SL PRS) and sent to a UE having a destination ID associated with the transmission of the reference signal (e.g., SL PRS), and based on feedback of a DMRS RSRP measurement value of an inter-UE physical channel (e.g., PSCCH / PSSCH) sent in association with a positioning (e.g., SL positioning) associated with the reference signal (e.g., SL PRS).

[0363] For example, the transmit power of a reference signal (e.g., SL PRS) may be controlled based on an inter-UE (e.g., SL) path loss based on feedback of an RSRP measurement value of a reference signal (e.g., SLPRS) sent in association with a positioning (e.g., SL positioning) associated with the reference signal (e.g., SL PRS) and sent to a UE having a destination ID associated with the transmission of the reference signal (e.g., SL PRS), based on feedback of a DMRS of an inter-UE physical channel (e.g., PSCCH / PSSCH) sent in association with a positioning (e.g., SL positioning) associated with the reference signal (e.g., SL PRS), and based on feedback of an RSRP measurement value of a DMRS of an inter-UE physical channel (e.g., PSCCH / PSSCH) sent in association with inter-UE (e.g., SL) communication.

[0364] For example, in the above operation, each RSRP measurement value may be measured as follows.

[0365] For example, each RSRP measurement value can be an RSRP measurement value measured for each target channel / signal within a (pre)configured time interval before the transmission time point of the reference signal (e.g., SLPRS) and in the same resource pool as the resource pool in which the reference signal (e.g., SLPRS) is transmitted.

[0366] For example, each RSRP measurement value can be an RSRP measurement value measured for each target channel / signal within a (pre)configured time interval before the transmission time point of the reference signal (e.g., SL PRS), in the same resource pool as the resource pool in which the reference signal (e.g., SL PRS) is transmitted and in a resource pool different from the resource pool in which the reference signal (e.g., SLPRS) is transmitted.

[0367] For example, the RSRP measurement value may be a result value obtained by performing L (layer)-3 filtering.

[0368] For example, when measuring the RSRP of the DMRS of a reference signal (e.g., SL PRS), the RSRP of an inter-UE physical channel (e.g., PSCCH / PSSCH) associated with positioning (e.g., SL positioning) related to a reference signal (e.g., SLPRS), and the RSRP of an inter-UE physical channel (e.g., PSCCH / PSSCH) associated with inter-UE (e.g., SL) communication, the UE may operate as follows.

[0369] i) For example, a UE may expect the L-3 filter coefficients associated with RSRP measurements across different resource pools (inter-UE physical channel (eg, PSCCH / PSSCH) DMRS) to be the same.

[0370] ii) For example, the UE may expect the P_0 value and alpha value to be the same for power control of reference signals (e.g., SLPRS) configured for each of the different resource pools, power control of inter-UE physical channels (e.g., PSCCH / PSSCH) used for positioning (e.g., SL positioning), and power control of inter-UE physical channels (e.g., PSCCH / PSSCH) used for inter-UE (e.g., SL) communication.

[0371] iii) For example, the L-3 filter coefficients to be applied to RSRP measurements of reference signals (e.g., SL PRS) and the L-3 filter coefficients to be applied to RSRP measurements of inter-UE physical channels (e.g., PSSCH / PSCCH) DMRS (associated with positioning (e.g., SL positioning)) may be (pre-)configured separately.

[0372] iv) For example, the L-3 filter coefficients to be applied to RSRP measurements of inter-UE physical channels (e.g., PSSCH / PSCCH) associated with positioning (e.g., SL positioning) to be sent in different resource pools, and the L-3 filter coefficients to be applied to RSRP measurements of inter-UE physical channels (e.g., PSSCH / PSCCH) associated with inter-UE (e.g., SL) communications may be (pre-)configured separately.

[0373] v) In the above case, for example, the UE may receive a report of each RSRP measurement value in different resource pools, and an L-3 filter coefficient value for each RSRP measurement value.

[0374] vi) In the above case, for example, the UE may apply different weight values ​​to each RSRP measurement value and calculate the final RSRP value used to calculate the path loss for transmit power control of the reference signal (e.g., SL PRS). For example, the weight values ​​may be (pre)configured as separate values. For example, the weight values ​​may be determined based on the EPRE (or PSD per RE) of the reference signal (e.g., SL PRS) and the EPRE (or PSD per RE) of the inter-UE physical channel (e.g., PSCCH / PSSCH).

[0375] vii) For example, the UE may apply different weight values ​​to the RSRP value of the reference signal (e.g., SL PRS) and the RSRP value of the inter-UE physical channel (e.g., PSCCH / PSSCH), and calculate the final RSRP value for calculating the path loss for transmit power control of the reference signal (e.g., SL PRS).

[0376] For example, in the above case, if the RSRP measurement value of the reference signal (e.g., SL PRS) measured and fed back by a UE with the same destination ID within a (pre)configured time interval before the transmission time point of the reference signal (e.g., SL PRS) is available, or if the number of such measurement values ​​is greater than or equal to a (pre)configured threshold, the UE can calculate the path loss for the transmit power control of the reference signal (e.g., SLPRS) based on the RSRP measurement value of the reference signal (e.g., SLPRS).

[0377] For example, in the above case, if the RSRP measurement value of the reference signal (e.g., SL PRS) measured and fed back by a UE with the same destination ID within a (pre)configured time interval before the transmission time point of the reference signal (e.g., SL PRS) (e.g., a time interval that is (pre)configured as a period before the transmission time point of the reference signal) is invalid, or if the number of such measurement values ​​is less than a (pre)configured threshold, the UE may operate as follows.

[0378] i) For example, the UE may calculate the path loss value based on the RSRP measurement value of the inter-UE physical channel (e.g., PSCCH / PSSCH) DMRS associated with the positioning (e.g., SL positioning) related to the reference signal (e.g., SLPRS) sent to the UE with the destination ID.

[0379] ii) For example, the UE may calculate the path loss value based on the RSRP measurement value of the inter-UE physical channel (e.g., PSCCH / PSSCH) DMRS associated with the positioning (e.g., SL positioning) related to the reference signal (e.g., SL PRS) sent to the UE with the destination ID and the inter-UE physical channel (e.g., PSCCH / PSSCH) DMRS used for inter-UE (e.g., SL) communication.

[0380] According to an embodiment of the present disclosure, when a UE performs RSRP measurement on a reference signal (e.g., SLPRS) sent in different resource pools, an inter-UE physical channel (e.g., PSCCH / PSSCH) DMRS associated with positioning (e.g., SL positioning), and an inter-UE physical channel (e.g., PSCCH / PSSCH) DMRS associated with inter-UE (e.g., SL) communication, for example, when the UE reports the RSRP measurement value based on an event such as a case where the difference between a previously reported RSRP measurement value and a newly measured RSRP measurement value is greater than or equal to a threshold, or a case where a duration greater than or equal to a threshold has passed since the previously reported RSRP, if the RSRP value based on one of the different resource pools or based on independent measurement meets the event condition, the UE may report the RSRP measurement value that meets the event condition to the opposite UE without waiting for the RSRP measurement value in other resource pools or other channels / signals to meet the event condition.

[0381] For example, as described above, the UE may control the transmit power of the reference signal (e.g., SL PRS) based on the RSRP of the inter-UE physical channel (e.g., PSCCH / PSSCH) DMRS and / or the reference signal (e.g., SL PRS) (associated with the reference signal (e.g., SL PRS) and / or inter-UE (e.g., SL) communication) received from the UE that will receive the reference signal (e.g., SL PRS), rather than controlling the transmit power of the reference signal (e.g., SL PRS) based on the RSRP of the inter-UE physical channel (e.g., PSCCH / PSSCH) DMRS and / or the reference signal (e.g., SLPRS) (associated with the reference signal (e.g., SLPRS) and / or inter-UE (e.g., SL) communication) reported by the UE that will receive the reference signal (e.g., SL PRS).

[0382] For example, in the above case, the UE that will send the reference signal (e.g., SL PRS) can receive information on the transmit power and / or transmit power control for the inter-UE physical channel (e.g., PSCCH / PSSCH) and / or the reference signal (e.g., SLPRS) from the UE that will receive the reference signal (e.g., SLPRS).

[0383] According to an embodiment of the present disclosure, when a reference signal (e.g., SL PRS) sent by UE-A is received by one or more UE-Bs (e.g., when the reference signal (e.g., SL PRS) sent by UE-A is overheard by a UE-B other than the destination, or when UE-A and UE-B belong to the same group in a multicast case), UE-A may control the transmit power of the reference signal (e.g., SL PRS) to be sent based on an RSRP report for an inter-UE physical channel (e.g., PSCCH / PSSCH) DMRS and / or a reference signal (e.g., SLPRS) received from one or more UE-Bs.

[0384] For example, by controlling the transmission power of a reference signal (eg, SLPRS) based on the minimum value among RSRP values ​​reported from UE-B, the reception performance of UE-B can be improved.

[0385] For example, by controlling the transmission power of the reference signal (eg, SL PRS) based on the maximum value among the RSRP values ​​reported from UE-B, interference caused by transmission of the reference signal (eg, SL PRS) to nearby UEs can be minimized.

[0386] For example, by controlling the transmission power of a reference signal (eg, SL PRS) based on the average value of RSRP values ​​reported from UE-B, a trade-off between reception performance and interference management can be achieved.

[0387] According to various embodiments of the present disclosure, when the resource pool for sending a reference signal (e.g., SL PRS) used for positioning (e.g., SL positioning) is the same as or different from the resource pool for sending a channel / signal associated with the reference signal (e.g., SL PRS), an efficient method is proposed. The method controls the transmission power of the reference signal (e.g., SL PRS) based on the transmission power measurement value of the inter-UE physical channel (e.g., PSCCH / PSSCH), which is sent more frequently than the reference signal (e.g., SL PRS), thereby enabling more reliable path loss measurement.

[0388] At the same time, when the resource pool for sending a reference signal (e.g., SL PRS) used for positioning (e.g., SL positioning) is the same as or different from the resource pool for sending a channel / signal associated with the reference signal (e.g., SL PRS), it is necessary to define a transmission power control method for the reference signal (e.g., SL PRS).

[0389] The present disclosure proposes a method and operation for controlling the transmission power of a reference signal (eg, SL PRS) under the above-mentioned resource pool conditions to avoid interfering with existing inter-UE (eg, SL) communications, as well as a device supporting the method and operation.

[0390] For example, power control for a reference signal (e.g., SL PRS) and an inter-UE physical channel (e.g., PSCCH / PSSCH) associated with the reference signal (e.g., SL PRS) may be controlled based on base station-to-UE (e.g., DL) path loss, inter-UE (e.g., SL) path loss, or both base station-to-UE (e.g., DL) path loss and inter-UE (e.g., SL) path loss.

[0391] According to an embodiment of the present disclosure, the UE may determine the path loss for transmit power control to be applied to its reference signal (e.g., SLPRS) based on the path loss derived from the RSRP of the reference signals (e.g., SLPRS) sent from other UEs in the resource pool and based on the path loss of the reference signal (e.g., SL PRS) with the highest priority (i.e., the minimum priority value) among the reference signals (e.g., SL PRS).

[0392] For example, a path loss less than or equal to the path loss of the reference signal with the highest priority (e.g., SL PRS) may be applied to the transmission power of the reference signal (e.g., SL PRS) of the UE so as to protect the transmission of the reference signal with the highest priority (e.g., SL PRS).

[0393] According to an embodiment of the present disclosure, when N reference signals (e.g., SL PRS) based on FDM with the same comb size but different RE offsets are transmitted in a single time slot, the maximum transmit power allowed for the transmission of the reference signal (e.g., SL PRS) can be divided into 1 / N, and the transmit power allocated to each reference signal (e.g., SL PRS) is controlled based on the transmit power.

[0394] For example, the reference signals (e.g., SL PRS) to be transmitted simultaneously may be selected so as to maximize the difference between the RE offset values ​​applied to the respective reference signals (e.g., SL PRS). For example, when the comb size is 4, the maximum number of reference signals (e.g., SL PRS) that can be transmitted is 2, and when the RE offsets of the reference signals (e.g., SL PRS) to be transmitted are {0, 1, 2}, the reference signal (e.g., SL PRS) with RE offsets {0, 2} may be selected as the reference signal (e.g., SL PRS) to be ultimately transmitted.

[0395] According to an embodiment of the present disclosure, in the above operation, the number N of reference signals (e.g., SL PRS) to be sent may be greater than a preconfigured threshold, or may be greater than the number of reference signals (e.g., SL PRS) that the UE can send simultaneously based on the UE capability.

[0396] In this case, for example, the UE may send only M reference signals (e.g., SL PRS) based on the priority associated with each reference signal (e.g., SL PRS), where M is less than or equal to a threshold or the maximum number of transmissions that the UE is capable of sending, and may abandon the transmission of the remaining reference signals (e.g., SL PRS).

[0397] For example, in order to minimize interference between reference signals (eg, SL PRS) that are finally transmitted, the UE may determine a reference signal (eg, SLPRS) to be transmitted based on a comb pattern of the reference signal (eg, SLPRS).

[0398] For example, the UE may determine a reference signal (eg, SLPRS) to be transmitted based on an RE offset of the reference signal (eg, SL PRS).

[0399] For example, the UE may select a reference signal to be transmitted (e.g., SL PRS) so that the difference between the RE offset values ​​of the reference signal to be transmitted (e.g., SLPRS) is maximized. For example, when the comb size is 4, the maximum number of reference signals (e.g., SL PRS) that can be transmitted is 2, and when the RE offsets of the reference signal to be transmitted (e.g., SL PRS) are {0, 1, 2}, the reference signal (e.g., SL PRS) with RE offsets {0, 2} may be selected as the reference signal to be transmitted (e.g., SLPRS).

[0400] The above-mentioned transmission power control operation for reference signals (e.g., SLPRS) based on path loss measurement according to various embodiments of the present disclosure may be limited to UE operation (in a resource pool) when retransmission feedback is not allowed for transmission of reference signals (e.g., SL PRS).

[0401] According to an embodiment of the present disclosure, a reference signal (eg, SL PRS) and an inter-UE physical channel (eg, PSCCH / PSSCH) associated with the reference signal (eg, SLPRS) may be transmitted in a shared resource pool.

[0402] In this case, for example, since the reference signal (e.g., SLPRS) and the inter-UE physical channel (e.g., PSCCH / PSSCH) associated with the reference signal (e.g., SLPRS) may share the same resources within a time slot, the P_0 and alpha values ​​for base station-to-UE (e.g., DL) communication and / or SL used in the power control method for the reference signal (e.g., SL PRS) may be set to be the same as the P_0 and alpha values ​​for base station-to-UE (e.g., DL) communication and / or SL used in the power control method for the inter-UE physical channel (e.g., PSCCH / PSSCH) associated with the reference signal (e.g., SL PRS).

[0403] For example, since the inter-UE physical channel (e.g., PSCCH / PSSCH) associated with the reference signal (e.g., SL PRS) is always transmitted in association with the reference signal (e.g., SL PRS), the P_0 and alpha values ​​for base station-to-UE (e.g., DL) communication and / or SL used in power control of the inter-UE physical channel (e.g., PSCCH / PSSCH) associated with the reference signal (e.g., SL PRS) may be configured to be different from the P_0 and alpha values ​​for base station-to-UE (e.g., DL) communication and / or SL used in power control of the inter-UE physical channel (e.g., PSCCH / PSSCH) transmitted for inter-UE (e.g., SL) communication in the shared resource pool.

[0404] For example, considering both interference caused by transmission of inter-UE physical channels (e.g., PSCCH / PSSCH) associated with reference signals (e.g., SL PRS) on transmission of inter-UE physical channels (e.g., PSCCH / PSSCH) for inter-UE (e.g., SL) communication in a shared resource pool and an operation of always being transmitted in association with reference signals (e.g., SL PRS), P_0 and alpha values ​​for base station-to-UE (e.g., DL) communication and / or inter-UE (e.g., SL) communication used in power control for transmission of inter-UE physical channels (e.g., PSCCH / PSSCH) associated with reference signals (e.g., SL PRS) may be based on P_0 and alpha values ​​for base station-to-UE (e.g., DL) communication and / or inter-UE (e.g., SL) communication used in power control for transmission of inter-UE physical channels (e.g., PSCCH / PSSCH) for inter-UE (e.g., SL) communication in a shared resource pool and P_0 and alpha values ​​for power control for transmission of inter-UE physical channels (e.g., PSCCH / PSSCH) for inter-UE (e.g., SL) communication in a shared resource pool and P_0 and alpha values ​​for power control for transmission of reference signals (e.g., SL PRS). The power control method of the UE PRS) is used to determine / configure P_0 and alpha values ​​for base station to UE (e.g., DL) communication and / or inter-UE (e.g., SL) communication.

[0405] Figure 15 A process of performing inter-UE transmission based on transmit power determined using a single power control parameter according to the related art is shown. Figure 15 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0406] Reference Figure 15 In step S1510, inter-UE physical shared channel transmission may occur at the transmitting UE. That is, inter-UE data to be transmitted to the transmitting UE may be generated. For example, the inter-UE physical shared channel transmission may include physical sidelink control channel (PSCCH) transmission and / or physical sidelink shared channel (PSSCH) transmission (based on PSCCH transmission). For example, the inter-UE data may include sidelink (SL) data.

[0407] In step S1520, the transmitting UE may determine a transmit power for performing inter-UE physical shared channel transmission based on the power control parameter. For example, the power control parameter may include P_0 and / or an alpha value. According to the prior art, since only data for inter-UE communication may be transmitted via the inter-UE physical shared channel transmission, only a single value of the power control parameter may be configured for the transmitting UE for the inter-UE physical shared channel transmission.

[0408] In this case, when a signal other than inter-UE communication data (e.g., a reference signal) needs to be sent (together) via an inter-UE physical shared channel, even if the signal is sent via the same inter-UE physical shared channel, the transmission power may not be appropriately determined if different power control is required due to differences in QoS and / or priority of the related services.

[0409] In step S1530 , the transmitting UE may perform inter-UE physical shared channel transmission based on the determined transmit power.

[0410] Figure 16 A process of performing inter-UE transmission based on transmit power determined using multiple power control parameters according to an embodiment of the present disclosure is shown. Figure 16 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0411] Reference Figure 16 In step S1610, inter-UE physical shared channel transmission may occur at the transmitting UE. That is, the content transmitted via the inter-UE physical shared channel transmission may include inter-UE data (e.g., SL data), control information (e.g., SCI) for transmitting a reference signal (e.g., SL PRS), and at least one of the reference signal (e.g., SL PRS). For example, the inter-UE physical shared channel transmission may include physical sidelink control channel (PSCCH) transmission and / or physical sidelink shared channel (PSSCH) transmission (PSCCH-based transmission).

[0412] In step S1620, a power control parameter to be used for power control of inter-UE physical shared channel transmission may be determined. For example, the power control parameter may include a first power control parameter for inter-UE data transmission or a second power control parameter for reference signal transmission.

[0413] For example, the transmitting UE may determine the power control parameters to be used for the inter-UE physical shared channel transmission based on the purpose of the inter-UE physical shared channel transmission. For example, the purpose of the inter-UE physical shared channel transmission may be determined based on the format of the control information (e.g., SCI) transmitted via the inter-UE physical shared channel.

[0414] For example, when the format of the control information is a format related only to the transmission of inter-UE communication data (e.g., SCI format 2-A, SCI format 2-B, or SCI format 2-C), the first power control parameter may be used as the power control parameter. Alternatively, when the format of the control information is a format related to the transmission of a reference signal (e.g., SCI format 2-D), the second power control parameter may be used as the power control parameter. In this embodiment, it is assumed that the purpose of inter-UE physical shared channel transmission is to transmit reference signals. That is, for example, the transmitting UE may decide to perform power control for inter-UE physical shared channel transmission based on the second power control parameter.

[0415] In this way, even when performing the same type of inter-UE physical shared channel transmission, applying different power control parameters depending on the intended use allows for transmission to be performed taking into account factors such as the QoS and / or priority of the signal transmitted via the inter-UE physical shared channel. This can prevent channel congestion and also take into account the priority associated with the service.

[0416] In step S1630, the transmitting UE may determine a transmit power for performing inter-UE physical shared channel transmission based on the determined second power control parameter. For example, the second power control parameter may include P_0 and / or an alpha value.

[0417] In step S1640 , the transmitting UE may perform inter-UE physical shared channel transmission based on the determined transmit power.

[0418] In various embodiments of the present disclosure, the above-mentioned path loss measurement-based transmit power control operation for a reference signal (e.g., SLPRS) may be limited to being performed by the UE only (in a resource pool) when retransmission feedback is allowed for the transmission of the reference signal (e.g., SL PRS).

[0419] According to an embodiment of the present disclosure, when a reference signal (eg, SLPRS) and an inter-UE physical channel (eg, PSCCH / PSSCH) are transmitted in a resource pool, the UE may control the transmission power of each of them as follows.

[0420] For example, the transmission power of the inter-UE physical shared channel (eg, PSSCH) based on the base station to UE (eg, DL) path loss may be determined as shown in the following table.

[0421] [Table 31]

[0422]

[0423] For example, the transmission power of the inter-UE physical shared channel (e.g., PSSCH) based on the inter-UE (e.g., SL) path loss can be determined as shown in the following table.

[0424] [Table 32]

[0425]

[0426] For example, the transmit power of a reference signal (eg, SL PRS) based on a base station to UE (eg, DL) path loss may be determined as follows.

[0427] [Formula 7]

[0428]

[0429] Alternatively, for example, the transmission power of a reference signal (eg, SL PRS) based on a path loss from the base station to the UE (eg, DL) may be determined as shown in the following table.

[0430] [Table 33]

[0431]

[0432]

[0433] Here, for example, the P_(0, D, SL-PRS) value may be a P_(0, D) value configured separately for transmit power control of a reference signal (e.g., SLPRS) transmitted in a resource pool. For example, the P_(0, D, SL-PRS) value may be greater than the P_(0, D) value based on the size of the comb including the reference signal (e.g., SL PRS).

[0434] For example, the transmit power of a reference signal (eg, SL PRS) based on an inter-UE (eg, SL) path loss may be determined as follows.

[0435] [Formula 8]

[0436]

[0437] Alternatively, for example, the transmission power of a reference signal (eg, SL PRS) based on an inter-UE (eg, SL) path loss may be determined as shown in the following table.

[0438] [Table 34]

[0439]

[0440] Here, for example, the P_(0, SL, SL-PRS) value may be a P_(0, SL) value configured separately for transmit power control of a reference signal (e.g., SLPRS) transmitted in a resource pool. For example, the P_(0, SL, SL-PRS) value may be greater than the P_(0, SL) value based on the size of the comb including the reference signal (e.g., SL PRS).

[0441] For example, through the above operations, the UE may perform transmit power control based on the comb size while taking into account the power boosting of the reference signal (eg, SLPRS) REs.

[0442] According to various embodiments of the present disclosure, when the resource pool for sending a reference signal (e.g., SLPRS) used for positioning (e.g., SL positioning) is the same as or different from the resource pool for sending a channel / signal associated with the reference signal (e.g., SL PRS), an efficient method is proposed for controlling the transmission power of the reference signal (e.g., SL PRS) to avoid interfering with existing inter-UE (e.g., SL) communication resources.

[0443] For example, methods used for UE positioning may include GNSS, OTDOA, enhanced cell ID (E-CID), pressure sensor positioning, WLAN positioning, Bluetooth positioning, terrestrial beacon system (TBS), uplink time difference of arrival (UTDOA), etc. The reference signal sent and received for positioning may include a sidelink positioning reference signal (SL PRS), and the reference signal may be sent through a common resource pool in which data (e.g., SL data) can also be sent and received, or through resources in a dedicated resource pool in which only reference signals (e.g., SLPRS) are allowed to be sent and received. For example, control information for reference signal (e.g., SLPRS) transmission in the common resource pool may be sent via an inter-UE physical shared channel (e.g., PSSCH). In this case, it is necessary to define a method for controlling the transmission power of a reference signal (e.g., SLPRS) based on a comb pattern.

[0444] According to various embodiments of the present disclosure, the transmission power parameters of the inter-UE physical shared channel (e.g., PSSCH) transmitted through a common resource pool through which control information for reference signals (e.g., SLPRS) is transmitted can be set separately from the transmission power parameters of the inter-UE physical shared channel (e.g., PSSCH) through which data (e.g., SL data) is transmitted.

[0445] According to an embodiment of the present disclosure, among the RSRP-based path losses of reference signals (e.g., SL PRS) sent by multiple UEs, the transmission power of the reference signal (e.g., SL PRS) sent by the UE can be controlled based on the path loss of the reference signal with the highest priority (e.g., SLPRS).

[0446] For example, reference signals (eg, SLPRS) to be simultaneously transmitted based on comb multiplexing may be selected to have RE offsets with the largest interval.

[0447] For example, based on the UE capability of having a number N of simultaneous transmissions, up to (maximum) N reference signals (eg, SL PRSs) may be transmitted simultaneously in order of priority.

[0448] For example, in a common resource pool, P0 and alpha values ​​for controlling transmit power for (SL) positioning and inter-UE communication (eg, SL communication) can be configured separately. According to prior art, only a single set of transmit power control parameters is configured in a resource pool.

[0449] Figure 17 A process of performing wireless communication by a first device according to one embodiment of the present disclosure is shown. Figure 17 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0450] Reference Figure 17 In step S1710, the first device may determine, based on the purpose of the inter-device physical shared channel transmission, a first transmit power for a first inter-device physical shared channel transmission to be performed using a first resource within the shared spectrum. In step S1720, the first device may perform a first inter-device physical control channel transmission for scheduling the first inter-device physical shared channel transmission based on the first transmit power and the first resource. In step S1730, the first device may perform the first inter-device physical shared channel transmission based on the first transmit power, the first inter-device physical control channel transmission, and the first resource. For example, the first transmit power may be determined based on a power control parameter configured according to the purpose of the inter-device physical shared channel transmission.

[0451] For example, the first inter-Device Physical Shared Channel may be used to transmit a reference signal or transmit inter-Device data.

[0452] For example, the purpose of the first inter-Device Physical Shared Channel transmission may be determined based on the format of the first inter-Device control information transmitted via the first inter-Device Physical Shared Channel transmission.

[0453] For example, based on the format of the first inter-DEVICE control information being 2-D, the purpose of sending the first inter-DEVICE physical shared channel may be to send a reference signal.

[0454] For example, based on the fact that the format of the first inter-D control information is not 2-D, the purpose of transmitting the first inter-D device physical shared channel may be to transmit inter-D device data.

[0455] For example, based on the purpose of the first inter-Device Physical Shared Channel transmission being the transmission of a reference signal, the first inter-Device Physical Shared Channel transmission may include the transmission of a first reference signal.

[0456] For example, based on the purpose of the first inter-Device Physical Shared Channel transmission being to transmit a reference signal, the first inter-Device Physical Shared Channel transmission may include transmitting a first reference signal and transmitting first inter-Device data.

[0457] For example, based on the purpose of sending the first inter-device physical shared channel is to send a reference signal, the power control parameter can be a first power control parameter, and based on the purpose of sending the first inter-device physical shared channel is to send inter-device data, the power control parameter can be a second power control parameter.

[0458] For example, at least one of a first P0 value or a first alpha value included in the first power control parameter may be different from a second P0 value or a second alpha value included in the second power control parameter.

[0459] For example, the first power control parameter may be configured based on the second power control parameter.

[0460] For example, a second inter-device physical shared channel transmission can be performed in the same time slot as the first inter-device physical shared channel transmission based on a second transmission power and a second resource within the shared spectrum, wherein the purpose of the N inter-device physical shared channel transmissions including the first inter-device physical shared channel transmission and the second inter-device physical shared channel transmission can be the transmission of a reference signal, and wherein the first transmission power and the second transmission power can be determined as 1 / N of the maximum transmission power associated with the first device.

[0461] For example, the first inter-device physical shared channel transmission may include the transmission of a first reference signal, the second inter-device physical shared channel transmission may include the transmission of a second reference signal, the comb size of the first reference signal and the comb size of the second reference signal may be the same, and the second reference signal may be a reference signal associated with a second resource element offset, and the difference between the second resource element offset and the first resource element offset associated with the first reference signal is the largest.

[0462] For example, N inter-device physical shared channel transmissions may include N reference signals, and N reference signals may be determined among the M reference signals based on priorities associated with the M reference signals, where M may be greater than a threshold and N may be less than or equal to a threshold.

[0463] The above-mentioned embodiments can be applied to various devices described below. For example, the processor 102 of the first device 100 can determine a first transmission power for a first inter-device physical shared channel transmission to be performed using a first resource within a shared spectrum based on the purpose of the inter-device physical shared channel transmission. Furthermore, the processor 102 of the first device 100 can control the transceiver 106 to perform a first inter-device physical control channel transmission for scheduling the first inter-device physical shared channel transmission based on the first transmission power and the first resource. Furthermore, the processor 102 of the first device 100 can control the transceiver 106 to perform the first inter-device physical shared channel transmission based on the first transmission power, the first inter-device physical control channel transmission, and the first resource. For example, the first transmission power can be determined based on a power control parameter configured according to the purpose of the inter-device physical shared channel transmission.

[0464] According to an embodiment of the present disclosure, a first device for performing wireless communication may be proposed. For example, the first device may include: at least one transceiver; at least one processor; and at least one memory, the at least one memory being operatively connected to the at least one processor and storing instructions, the instructions causing the first device to perform operations based on being executed by the at least one processor. For example, these operations may include: determining a first transmit power for a first inter-device physical shared channel transmission to be performed using a first resource within a shared spectrum based on the purpose of the inter-device physical shared channel transmission; performing a first inter-device physical control channel transmission for scheduling the first inter-device physical shared channel transmission based on the first transmit power and the first resource; and performing a first inter-device physical shared channel transmission based on the first transmit power, the first inter-device physical control channel transmission, and the first resource, wherein the first transmit power may be determined based on a power control parameter configured according to the purpose of the inter-device physical shared channel transmission.

[0465] For example, the first inter-Device Physical Shared Channel may be used to transmit a reference signal or transmit inter-Device data.

[0466] For example, the purpose of the first inter-Device Physical Shared Channel transmission may be determined based on the format of the first inter-Device control information transmitted via the first inter-Device Physical Shared Channel transmission.

[0467] For example, based on the format of the first inter-DEVICE control information being 2-D, the purpose of sending the first inter-DEVICE physical shared channel may be to send a reference signal.

[0468] For example, based on the fact that the format of the first inter-D control information is not 2-D, the purpose of transmitting the first inter-D device physical shared channel may be to transmit inter-D device data.

[0469] For example, based on the purpose of the first inter-Device Physical Shared Channel transmission being the transmission of a reference signal, the first inter-Device Physical Shared Channel transmission may include the transmission of a first reference signal.

[0470] For example, based on the purpose of the first inter-Device Physical Shared Channel transmission being to transmit a reference signal, the first inter-Device Physical Shared Channel transmission may include transmitting a first reference signal and transmitting first inter-Device data.

[0471] For example, based on the purpose of sending the first inter-device physical shared channel is to send a reference signal, the power control parameter can be a first power control parameter, and based on the purpose of sending the first inter-device physical shared channel is to send inter-device data, the power control parameter can be a second power control parameter.

[0472] For example, at least one of a first P0 value or a first alpha value included in the first power control parameter may be different from a second P0 value or a second alpha value included in the second power control parameter.

[0473] For example, the first power control parameter may be configured based on the second power control parameter.

[0474] For example, a second inter-device physical shared channel transmission can be performed in the same time slot as the first inter-device physical shared channel transmission based on a second transmission power and a second resource within the shared spectrum, wherein the purpose of the N inter-device physical shared channel transmissions including the first inter-device physical shared channel transmission and the second inter-device physical shared channel transmission can be the transmission of a reference signal, and wherein the first transmission power and the second transmission power can be determined as 1 / N of the maximum transmission power associated with the first device.

[0475] For example, the first inter-device physical shared channel transmission may include the transmission of a first reference signal, the second inter-device physical shared channel transmission may include the transmission of a second reference signal, the comb size of the first reference signal and the comb size of the second reference signal may be the same, and the second reference signal may be a reference signal associated with a second resource element offset, and the difference between the second resource element offset and the first resource element offset associated with the first reference signal is the largest.

[0476] For example, N inter-device physical shared channel transmissions may include N reference signals, and N reference signals may be determined among the M reference signals based on priorities associated with the M reference signals, where M may be greater than a threshold and N may be less than or equal to a threshold.

[0477] According to one embodiment of the present disclosure, a device suitable for controlling a first user equipment (UE) may be proposed. For example, the device may include: at least one processor; and at least one memory, the at least one memory being operatively connected to the at least one processor and storing instructions, the instructions causing the first UE to perform operations based on being executed by the at least one processor. For example, these operations may include: determining a first transmit power for a first inter-UE physical shared channel transmission to be performed using a first resource within a shared spectrum based on the purpose of the inter-UE physical shared channel transmission; performing a first inter-UE physical control channel transmission for scheduling the first inter-UE physical shared channel transmission based on the first transmit power and the first resource; and performing a first inter-UE physical shared channel transmission based on the first transmit power, the first inter-UE physical control channel transmission, and the first resource, wherein the first transmit power may be determined based on a power control parameter configured according to the purpose of the inter-UE physical shared channel transmission.

[0478] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium storing instructions may be provided. For example, when executed, the instructions may cause a first device to: determine, based on a purpose of the inter-device physical shared channel transmission, a first transmit power for a first inter-device physical shared channel transmission to be performed using a first resource within a shared spectrum; perform, based on the first transmit power and the first resource, a first inter-device physical control channel transmission for scheduling the first inter-device physical shared channel transmission; and perform the first inter-device physical shared channel transmission based on the first transmit power, the first inter-device physical control channel transmission, and the first resource, wherein the first transmit power may be determined based on a power control parameter configured according to the purpose of the inter-device physical shared channel transmission.

[0479] Figure 18 A process of performing wireless communication by a second device according to an embodiment of the present disclosure is shown. Figure 18 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0480] Reference Figure 18 In step S1810, the second device may receive, from the first device, a first inter-device physical control channel transmission for scheduling a first inter-device physical shared channel transmission based on the first resource. In step S1820, the second device may receive the first inter-device physical shared channel transmission from the first device based on the first resource and the first inter-device physical control channel transmission. For example, the first inter-device physical control channel transmission and the first inter-device physical shared channel transmission may be performed based on a first transmission power, and the first transmission power may be determined based on the purpose of the first inter-device physical shared channel transmission.

[0481] For example, the purpose of sending the first inter-device physical shared channel can be to send a reference signal or to send inter-device data, and the purpose of sending the first inter-device physical shared channel can be determined based on the format of the first inter-device control information sent through the first inter-device physical shared channel.

[0482] The above embodiments can be applied to various devices described below. For example, the processor 202 of the second device 200 can control the transceiver 206 to receive a first inter-device physical control channel transmission from the first device 100 based on the first resource, which is a schedule for the first inter-device physical shared channel transmission. Furthermore, the processor 202 of the second device 200 can control the transceiver 206 to receive a first inter-device physical shared channel transmission from the first device 100 based on the first resource and the first inter-device physical control channel transmission. For example, the first inter-device physical control channel transmission and the first inter-device physical shared channel transmission can be performed based on a first transmission power, and the first transmission power can be determined based on the purpose of the first inter-device physical shared channel transmission.

[0483] According to one embodiment of the present disclosure, a second device for performing wireless communication may be proposed. For example, the second device may include: at least one transceiver; at least one processor; and at least one memory, the at least one memory being operatively connected to the at least one processor and storing instructions that cause the second device to perform operations based on being executed by the at least one processor. For example, these operations may include: receiving a first inter-device physical control channel transmission for scheduling a first inter-device physical shared channel transmission from a first device based on a first resource; and receiving a first inter-device physical shared channel transmission from the first device based on the first resource and the first inter-device physical control channel transmission, wherein the first inter-device physical control channel transmission and the first inter-device physical shared channel transmission may be performed based on a first transmission power, and wherein the first transmission power may be determined based on the purpose of the first inter-device physical shared channel transmission.

[0484] For example, the purpose of sending the first inter-device physical shared channel can be to send a reference signal or to send inter-device data, and the purpose of sending the first inter-device physical shared channel can be determined based on the format of the first inter-device control information sent through the first inter-device physical shared channel.

[0485] Various embodiments of the present disclosure may be combined with each other.

[0486] Hereinafter, devices to which various embodiments of the present disclosure can be applied will be described.

[0487] The various descriptions, functions, processes, proposals, methods and / or operational flows of the present disclosure described herein may be applied to, but not limited to, various fields requiring wireless communication / connection between devices (e.g., 5G).

[0488] Hereinafter, a more detailed description will be given with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise described, the same reference numerals may represent the same or corresponding hardware blocks, software blocks or functional blocks.

[0489] Figure 19 A communication system 1 according to an embodiment of the present disclosure is shown. Figure 19 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0490] Reference Figure 19 , a communication system 1 to which various embodiments of the present disclosure are applied includes a wireless device, a base station (BS), and a network. Herein, a wireless device refers to a device that performs communication using a radio access technology (RAT) (e.g., 5G New RAT (NR) or Long Term Evolution (LTE)), and may be referred to as a communication / radio / 5G device. The wireless device may include, but is not limited to, a robot 100a, a vehicle (100b-1, 100b-2), an extended reality (XR) device 100c, a handheld device 100d, a home appliance 100e, an Internet of Things (IoT) device 100f, and an artificial intelligence (AI) device / server 400. For example, a vehicle may include a vehicle with a wireless communication function, an autonomous vehicle, and a vehicle capable of performing inter-vehicle communication. Herein, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone) and / or an aircraft (AV) (e.g., an advanced air mobility (AAM)). XR devices may include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) installed in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance device, a digital signage, a vehicle, a robot, etc. Handheld devices may include smartphones, smart pads, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., notebooks). Home appliances may include TVs, refrigerators, and washing machines. IoT devices may include sensors and smart meters. For example, a BS and a network may be implemented as wireless devices, and a specific wireless device 200a may operate as a BS / network node relative to other wireless devices.

[0491] Here, in addition to LTE, NR, and 6G, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may also include narrowband IoT for low-power communication. In this case, for example, NB-IoT technology may be an example of low-power wide area network (LPWAN) technology and may be implemented as standards such as LTE Cat NB1 and / or LTE Cat NB2, without being limited to the above names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may perform communication based on LTE-M technology. In this case, as an example, LTE-M technology may be an example of LPWAN and may be referred to by various names including enhanced machine type communication (eMTC). For example, LTE-M technology may be implemented as at least any one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE machine type communication, and / or 7) LTE M, without being limited to the above names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may include at least one of Bluetooth, a low-power wide area network (LPWAN), and ZigBee considering low-power communication, and is not limited to the above names. As an example, ZigBee technology can generate a personal area network (PAN) related to low / low-power digital communication based on various standards including IEEE 802.15.4, and may be referred to by various names.

[0492] Wireless devices 100a to 100f can be connected to a network 300 via a BS 200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can be connected to an AI server 400 via the network 300. The network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although wireless devices 100a to 100f can communicate with each other via the BS 200 / network 300, wireless devices 100a to 100f can perform direct communication (e.g., sidelink communication) with each other without going through the BS / network. For example, vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). IoT devices (e.g., sensors) can perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0493] Wireless communication / connection 150a, 150b, or 150c may be established between wireless devices 100a to 100f / BS 200 or BS 200 / BS 200. Here, the wireless communication / connection may be established via various RATs (e.g., 5G NR), such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication), or inter-BS communication (e.g., relay, integrated access backhaul (IAB)). The wireless device and the BS / wireless device may transmit / receive radio signals to / from each other via the wireless communication / connections 150a and 150b. For example, the wireless communication / connections 150a and 150b may transmit / receive signals via various physical channels. To this end, various configuration information configuration processes, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and at least a portion of the resource allocation process for transmitting / receiving radio signals may be performed based on various proposals of the present disclosure.

[0494] Figure 20 A wireless device according to an embodiment of the present disclosure is shown. Figure 20 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0495] Reference Figure 20 , the first wireless device 100 and the second wireless device 200 can transmit radio signals through various RATs (e.g., LTE and NR). Herein, {the first wireless device 100 and the second wireless device 200} may correspond to Figure 19 {wireless device 100x and BS 200} and / or {wireless device 100x and wireless device 100x} in.

[0496] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may additionally include one or more transceivers 106 and / or one or more antennas 108. The processor(s) 102 may control the memory(s) 104 and / or the transceiver(s) 106, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processor(s) 102 may process information in the memory(s) 104 to generate first information / signals, and then transmit a radio signal including the first information / signals through the transceiver(s) 106. The processor(s) 102 may receive a radio signal including second information / signals through the transceiver 106, and then store information obtained by processing the second information / signals in the memory(s) 104. The memory(s) 104 may be connected to the processor(s) 102 and may store various information related to the operation of the processor(s) 102. For example, the memory(s) 104 may store software code including commands for executing part or all of the processing controlled by the processor(s) 102 or for performing the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. Here, the processor(s) 102 and the memory(s) 104 may be part of a communication modem / circuitry / chip designed to implement a RAT (e.g., LTE or NR). The transceiver(s) 106 may be connected to the processor(s) 102 and transmit and / or receive radio signals via the antenna(s) 108. Each transceiver 106 may include a transmitter and / or a receiver. The transceiver(s) 106 may be interchangeably used with the radio frequency (RF) unit(s). In the present disclosure, a wireless device may represent a communication modem / circuitry / chip.

[0497] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may also include one or more transceivers 206 and / or one or more antennas 208. The processor(s) 202 may control the memory(s) 204 and / or the transceiver(s) 206, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processor(s) 202 may process information in the memory(s) 204 to generate third information / signals, and then transmit a radio signal including the third information / signals through the transceiver(s) 206. The processor(s) 202 may receive a radio signal including fourth information / signals through the transceiver(s) 106, and then store information obtained by processing the fourth information / signals in the memory(s) 204. Memory(s) 204 may be connected to processor(s) 202 and may store various information related to the operation of processor(s) 202. For example, memory(s) 204 may store software code including commands for executing part or all of the processing controlled by processor(s) 202 or for performing the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. Here, processor(s) 202 and memory(s) 204 may be part of a communication modem / circuitry / chip designed to implement a RAT (e.g., LTE or NR). Transceiver(s) 206 may be connected to processor(s) 202 and transmit and / or receive radio signals via antenna(s) 208. Each transceiver 206 may include a transmitter and / or a receiver. Transceiver(s) 206 may be used interchangeably with RF unit(s). In this disclosure, a wireless device may represent a communication modem / circuitry / chip.

[0498] The hardware elements of the wireless devices 100 and 200 will be described in more detail below. One or more protocol layers may be implemented by, but are not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more protocol data units (PDUs) and / or one or more service data units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. One or more processors 102 and 202 may generate a signal (e.g., a baseband signal) including a PDU, SDU, message, control information, data, or information according to the description, functions, procedures, proposals, methods, and / or operational procedures disclosed in this document, and provide the generated signal to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive a signal (e.g., a baseband signal) from one or more transceivers 106 and 206, and obtain the PDU, SDU, message, control information, data, or information according to the description, functions, procedures, proposals, methods, and / or operational procedures disclosed in this document.

[0499] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be included in one or more processors 102 and 202 or stored in one or more memories 104 and 204, thereby being driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods and / or operational flows disclosed in this document may be implemented using software or firmware in the form of codes, commands and / or command sets.

[0500] One or more memories 104 and 204 can be connected to one or more processors 102 and 202 and can store various types of data, signals, messages, information, programs, codes, instructions, and / or commands. One or more memories 104 and 204 can be composed of read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drive, registers, cash memory, computer-readable storage media, and / or combinations thereof. One or more memories 104 and 204 can be located internally and / or externally to one or more processors 102 and 202. One or more memories 104 and 204 can be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0501] One or more transceivers 106 and 206 may transmit user data, control information, and / or radio signals / channels described in the methods and / or operational flows of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information, and / or radio signals / channels described in the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and may transmit and receive radio signals. For example, one or more processors 102 and 202 may control the one or more transceivers 106 and 206 to transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may control the one or more transceivers 106 and 206 to receive user data, control information, or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document through one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert received radio signals / channels, etc. from RF band signals to baseband signals so as to process the received user data, control information, radio signals / channels, etc. using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert user data, control information, radio signals / channels, etc. processed using one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more of the transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0502] Figure 21 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown. Figure 21 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0503] Reference Figure 21 , the signal processing circuit 1000 may include a scrambler 1010, a modulator 1020, a layer mapper 1030, a precoder 1040, a resource mapper 1050 and a signal generator 1060. Figure 21 operations / functions, not limited to Figure 20The processor (102, 202) and / or transceiver (106, 206) of Figure 20 The processor (102, 202) and / or transceiver (106, 206) are implemented Figure 21 For example, you can Figure 20 Alternatively, the processor (102, 202) can implement blocks 1010 to 1060. Figure 20 The processor (102, 202) implements blocks 1010 to 1050 and can be implemented by Figure 20 The transceiver (106, 206) is used to implement block 1060.

[0504] Can be passed Figure 21 Signal processing circuit 1000 converts a codeword into a radio signal. Herein, a codeword is a sequence of coded bits for an information block. An information block may include a transport block (e.g., a UL-SCH transport block, a DL-SCH transport block). Radio signals may be transmitted via various physical channels (e.g., PUSCH and PDSCH).

[0505] Specifically, the codeword can be converted into a scrambled bit sequence by the scrambler 1010. The scrambling sequence for scrambling can be generated based on an initial value, and the initial value can include the ID information of the wireless device. The scrambled bit sequence can be modulated into a modulation symbol sequence by the modulator 1020. The modulation scheme may include pi / 2-binary phase shift keying (pi / 2-BPSK), m-phase shift keying (m-PSK), and m-quadrature amplitude modulation (m-QAM). The complex modulation symbol sequence can be mapped to one or more transmission layers by the layer mapper 1030. The modulation symbol of each transmission layer can be mapped (precoded) to (one or more) corresponding antenna ports by the precoder 1040. The output z of the precoder 1040 can be obtained by multiplying the output y of the layer mapper 1030 with the N*M precoding matrix W. Here, N is the number of antenna ports and M is the number of transmission layers. The precoder 1040 can perform precoding after performing transform precoding (e.g., DFT) on the complex modulation symbols. Alternatively, the precoder 1040 may perform precoding without performing transform precoding.

[0506] The resource mapper 1050 can map the modulation symbols of each antenna port to time-frequency resources. The time-frequency resources may include multiple symbols in the time domain (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) and multiple subcarriers in the frequency domain. The signal generator 1060 can generate a radio signal from the mapped modulation symbols, and the generated radio signal can be sent to other devices through each antenna. To this end, the signal generator 1060 may include an inverse fast Fourier transform (IFFT) module, a cyclic prefix (CP) inserter, a digital-to-analog converter (DAC), and an up-converter.

[0507] Can Figure 21 The signal processing process for the signal received in the wireless device is configured in a manner opposite to the signal processing process (1010-1060) of the wireless device. Figure 20 100, 200) can receive a radio signal from the outside through an antenna port / transceiver. The received radio signal can be converted into a baseband signal by a signal restorer. To this end, the signal restorer may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module. Next, the baseband signal can be restored to a codeword through a resource demapping process, a post-coding process, a demodulation processor, and a descrambling process. The codeword can be restored to the original information block by decoding. Therefore, a signal processing circuit (not shown) for receiving a signal may include a signal restorer, a resource demapper, a post-coding process, a demodulator, a descrambler, and a decoder.

[0508] Figure 22 Another example of a wireless device according to an embodiment of the present disclosure is shown. The wireless device can be implemented in various forms according to use cases / services (see Figure 19 ). Figure 22 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0509] Reference Figure 22 , the wireless device (100, 200) may correspond to Figure 20 The wireless devices (100, 200) may be configured by various elements, components, units / portions and / or modules. For example, each of the wireless devices (100, 200) may include a communication unit 110, a control unit 120, a storage unit 130 and additional components 140. The communication unit may include a communication circuit 112 and (one or more) transceivers 114. For example, the communication circuit 112 may include Figure 20 One or more processors (102, 202) and / or one or more memories (104, 204). For example, the transceiver(s) 114 may include Figure 20The control unit 120 is electrically connected to the communication unit 110, the memory 130, and the additional components 140, and controls the overall operation of the wireless device. For example, the control unit 120 can control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit 130. The control unit 120 can transmit information stored in the memory unit 130 to the outside (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface, or store information received from the outside (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface in the memory unit 130.

[0510] The additional component 140 may be configured in various ways depending on the type of wireless device. For example, the additional component 140 may include at least one of a power unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device may be implemented in the following forms without limitation: a robot ( Figure 19 100a), vehicles ( Figure 19 100b-1 and 100b-2), XR devices ( Figure 19 100c), handheld device ( Figure 19 100d), household appliances ( Figure 19 100e), IoT devices ( Figure 19 100f), digital broadcasting devices, hologram devices, public safety devices, MTC devices, medical devices, fintech devices (or financial devices), security devices, climate / environmental devices, AI servers / devices ( Figure 19 400), BS( Figure 19 200), network nodes, etc. Depending on the use case / service, the wireless device can be used in a mobile or fixed place.

[0511] exist Figure 22In the embodiment of the present invention, the various elements, components, units / parts and / or modules in the wireless device (100, 200) can all be connected to each other through a wired interface, or at least part of them can be connected wirelessly through the communication unit 110. For example, in each of the wireless devices (100, 200), the control unit 120 and the communication unit 110 can be connected through a wired interface, and the control unit 120 and the first unit (e.g., 130, 140) can be connected wirelessly through the communication unit 110. Each element, component, unit / part and / or module in the wireless device (100, 200) can also include one or more elements. For example, the control unit 120 can be constructed by a collection of one or more processors. As an example, the control unit 120 can be constructed by a collection of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing unit and a memory control processor. As another example, the memory 130 can be constructed by a random access memory (RAM), a dynamic RAM (DRAM), a read-only memory (ROM), a flash memory, a volatile memory, a non-volatile memory and / or a combination thereof.

[0512] Hereinafter, the implementation will be described in detail with reference to the accompanying drawings. Figure 22 .

[0513] Figure 23 A handheld device according to an embodiment of the present disclosure is shown. The handheld device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch or smart glasses), or a portable computer (e.g., a notebook). The handheld device may be referred to as a mobile station (MS), a user unit (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless unit (WT). Figure 23 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0514] Reference Figure 23 , the handheld device 100 may include an antenna unit (108), a communication unit 110, a control unit 120, a storage unit 130, a power supply unit 140a, an interface unit 140b and an I / O unit 140c. The antenna unit 108 may be configured as a part of the communication unit 110. Blocks 110 to 130 / 140a to 140c correspond to Figure 22 Frame 110 to 130 / 140.

[0515] The communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from other wireless devices or a base station. The control unit 120 can perform various operations by controlling the components of the handheld device 100. The control unit 120 may include an application processor (AP). The storage unit 130 can store data / parameters / programs / codes / commands required to operate the handheld device 100. The storage unit 130 can store input / output data / information. The power supply unit 140a can supply power to the handheld device 100 and may include wired / wireless charging circuits, a battery, etc. The interface unit 140b can support connection between the handheld device 100 and other external devices. The interface unit 140b may include various ports for connecting to external devices (e.g., an audio I / O port and a video I / O port). The I / O unit 140c can input or output user-input video information / signals, audio information / signals, data, and / or information. The I / O unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and / or a haptic module.

[0516] For example, in the case of data communication, the I / O unit 140c can obtain information / signals (e.g., touch, text, voice, image, or video) input by the user, and the obtained information / signals can be stored in the storage unit 130. The communication unit 110 can convert the information / signals stored in the memory into radio signals and transmit the converted radio signals directly to other wireless devices or to the BS. The communication unit 110 can receive radio signals from other wireless devices or BSs and then restore the received radio signals to the original information / signals. The restored information / signals can be stored in the storage unit 130 and can be output as various types (e.g., text, voice, image, video, or tactile) through the I / O unit 140.

[0517] Figure 24 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. The vehicle or autonomous vehicle can be implemented by a mobile robot, a car, a train, a manned / unmanned aerial vehicle (AV), a ship, etc. Figure 24 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0518] Reference Figure 24 , the vehicle or autonomous vehicle 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a drive unit 140a, a power supply unit 140b, a sensor unit 140c, and an autonomous driving unit 140d. The antenna unit 108 may be configured as part of the communication unit 110. Blocks 110 / 130 / 140a to 140d correspond to Figure 22 Box 110 / 130 / 140.

[0519] The communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from external devices such as other vehicles, base stations (e.g., gNBs and roadside units), and servers. The control unit 120 can perform various operations by controlling components of the vehicle or autonomous vehicle 100. The control unit 120 may include an electronic control unit (ECU). The drive unit 140a can cause the vehicle or autonomous vehicle 100 to travel on the road. The drive unit 140a may include an engine, a motor, a transmission system, wheels, brakes, a steering system, etc. The power supply unit 140b can supply power to the vehicle or autonomous vehicle 100 and may include wired / wireless charging circuits, a battery, etc. The sensor unit 140c can acquire vehicle status, external environment information, user information, etc. The sensor unit 140c may include an inertial measurement unit (IMU), a collision sensor, a wheel sensor, a speed sensor, a slope sensor, a weight sensor, a heading sensor, a location module, a vehicle forward / backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, a lighting sensor, a pedal position sensor, etc. The autonomous driving unit 140d can implement technology for maintaining the lane in which the vehicle is traveling, technology for automatically adjusting the speed (for example, adaptive cruise control), technology for autonomously driving along a determined path, technology for driving by automatically setting a path with a destination set, etc.

[0520] For example, the communication unit 110 can receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d can generate an autonomous driving path and driving plan based on the acquired data. The control unit 120 can control the drive unit 140a so that the vehicle or autonomous vehicle 100 can move along the autonomous driving path according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit 110 can aperiodically / periodically acquire the latest traffic information data from the external server and acquire surrounding traffic information data from neighboring vehicles. During autonomous driving, the sensor unit 140c can acquire vehicle status and / or surrounding environment information. The autonomous driving unit 140d can update the autonomous driving path and driving plan based on the newly acquired data / information. The communication unit 110 can transmit information about the vehicle's location, autonomous driving path, and / or driving plan to the external server. The external server can use AI technology, etc. based on the information collected from the vehicle or autonomous vehicle to predict traffic information data and provide the predicted traffic information data to the vehicle or autonomous vehicle.

[0521] The claims in this specification can be combined in various ways. For example, the technical features in the method claims of this specification can be combined to be implemented or performed in a device, and the technical features in the device claims can be combined to be implemented or performed in a method. In addition, the technical features in (one or more) method claims and (one or more) device claims can be combined to be implemented or performed in a device. In addition, the technical features in (one or more) method claims and (one or more) device claims can be combined to be implemented or performed in a method.

Claims

1. A method for performing wireless communication by a first device, the method comprising: determining, based on a purpose of the inter-DPSCH transmission, a first transmit power for the first inter-DPSCH transmission to be performed using a first resource within a shared spectrum; performing a scheduled first inter-device physical control channel transmission for the first inter-device physical shared channel transmission based on the first transmission power and the first resource; and performing the first inter-DPSCH transmission based on the first transmission power, the first inter-DPSCH transmission, and the first resource; The first transmission power is determined based on a power control parameter configured according to the purpose of transmission of the inter-device physical shared channel.

2. The method according to claim 1, wherein The usage of the first inter-Device Physical Shared Channel is transmission of a reference signal or transmission of inter-Device data.

3. The method according to claim 2, wherein: The purpose of the first inter-Device Physical Shared Channel transmission is determined based on a format of first inter-Device control information transmitted via the first inter-Device Physical Shared Channel transmission.

4. The method according to claim 3, wherein: Based on the format of the first inter-DEVICE control information being 2-D, the purpose of sending the first inter-DEVICE physical shared channel is to send a reference signal.

5. The method according to claim 3, wherein Based on the fact that the format of the first inter-D control information is not 2-D, the purpose of sending the first inter-D physical shared channel is to send inter-D data.

6. The method according to claim 1, wherein Based on the purpose of transmitting the first inter-DPSCH is transmitting a reference signal, the first inter-DPSCH transmission includes transmitting a first reference signal.

7. The method according to claim 6, wherein: Based on the usage of the first inter-Device Physical Shared Channel transmission being transmission of a reference signal, the first inter-Device Physical Shared Channel transmission includes the transmission of the first reference signal and the transmission of first inter-Device data.

8. The method according to claim 1, wherein Based on the fact that the purpose of the first inter-device physical shared channel transmission is to transmit a reference signal, the power control parameter is a first power control parameter, and Based on the fact that the purpose of sending the first inter-DPSCH is to send inter-DPS data, the power control parameter is a second power control parameter.

9. The method according to claim 8, wherein At least one of a first P0 value or a first alpha value included in the first power control parameter is different from a second P0 value or a second alpha value included in the second power control parameter.

10. The method according to claim 8, wherein The first power control parameter is configured based on the second power control parameter.

11. The method according to claim 1, wherein performing a second inter-DPSCH transmission in the same time slot as the first inter-DPSCH transmission based on a second transmission power and a second resource within the shared spectrum, The purpose of the N inter-device physical shared channel transmissions including the first inter-device physical shared channel transmission and the second inter-device physical shared channel transmission is to transmit a reference signal, and The first transmit power and the second transmit power are determined to be 1 / N of a maximum transmit power associated with the first device.

12. The method according to claim 11, wherein The first inter-device physical shared channel transmission includes transmitting a first reference signal, The second inter-device physical shared channel transmission includes the transmission of a second reference signal. The comb size of the first reference signal is the same as the comb size of the second reference signal, and The second reference signal is a reference signal associated with a second resource element offset, and a difference between the second resource element offset and a first resource element offset associated with the first reference signal is the largest.

13. The method according to claim 11, wherein The N inter-device physical shared channels transmit N reference signals, wherein the N reference signals are determined from among the M reference signals based on priorities associated with the M reference signals, Wherein, the M is greater than the threshold, and Wherein, the N is less than or equal to the threshold.

14. A first apparatus for performing wireless communication, the first apparatus comprising: at least one transceiver; at least one processor; as well as at least one memory operatively connected to the at least one processor and storing instructions that, upon execution by the at least one processor, cause the first device to perform operations, The operations include: determining, based on a purpose of the inter-DPSCH transmission, a first transmit power for the first inter-DPSCH transmission to be performed using a first resource within a shared spectrum; performing a scheduled first inter-device physical control channel transmission for the first inter-device physical shared channel transmission based on the first transmission power and the first resource; and performing the first inter-DPSCH transmission based on the first transmission power, the first inter-DPSCH transmission, and the first resource; The first transmission power is determined based on a power control parameter configured according to the purpose of transmission of the inter-device physical shared channel.

15. An apparatus adapted to control a first user equipment (UE), the apparatus comprising: at least one processor; as well as at least one memory operatively connected to the at least one processor and storing instructions that, upon execution by the at least one processor, cause the first UE to perform operations, The operations include: determining, based on a purpose of the inter-UE physical shared channel transmission, a first transmit power for the first inter-UE physical shared channel transmission to be performed using a first resource within a shared spectrum; performing a scheduled first inter-UE physical control channel transmission for the first inter-UE physical shared channel transmission based on the first transmit power and the first resource; and performing the first inter-UE physical shared channel transmission based on the first transmission power, the first inter-UE physical control channel transmission, and the first resource; The first transmission power is determined based on a power control parameter configured according to the purpose of transmission of the inter-UE physical shared channel.

16. A non-transitory computer-readable storage medium storing instructions that, upon being executed, cause a first device to: determining, based on a purpose of the inter-DPSCH transmission, a first transmit power for the first inter-DPSCH transmission to be performed using a first resource within a shared spectrum; performing a scheduled first inter-device physical control channel transmission for the first inter-device physical shared channel transmission based on the first transmission power and the first resource; and performing the first inter-DPSCH transmission based on the first transmission power, the first inter-DPSCH transmission, and the first resource; in, The first transmission power is determined based on a power control parameter configured according to a purpose of transmission of the inter-device physical shared channel.

17. A method for performing wireless communication by a second device, the method comprising: receiving a first inter-device physical control channel transmission for scheduling of a first inter-device physical shared channel transmission from the first device based on the first resource; as well as receiving the first inter-device physical shared channel transmission from the first device based on the first resource and the first inter-device physical control channel transmission, wherein the first inter-device physical control channel transmission and the first inter-device physical shared channel transmission are performed based on a first transmission power, and The first transmission power is determined based on the purpose of transmission of the first inter-device physical shared channel.

18. The method according to claim 17, wherein The purpose of transmitting the first inter-device physical shared channel is transmitting a reference signal or transmitting inter-device data, and The purpose of the first inter-Device Physical Shared Channel is determined based on a format of the first inter-Device Control Information sent via the first inter-Device Physical Shared Channel.

19. A second apparatus for performing wireless communication, the second apparatus comprising: at least one transceiver; at least one processor; as well as at least one memory operatively connected to the at least one processor and storing instructions that, upon execution by the at least one processor, cause the second device to perform operations, The operations include: receiving a first inter-device physical control channel transmission for scheduling of a first inter-device physical shared channel transmission from the first device based on the first resource; and receiving the first inter-device physical shared channel transmission from the first device based on the first resource and the first inter-device physical control channel transmission, wherein the first inter-device physical control channel transmission and the first inter-device physical shared channel transmission are performed based on a first transmission power, and The first transmission power is determined based on the purpose of transmission of the first inter-device physical shared channel.

20. The second device according to claim 19, wherein The purpose of transmitting the first inter-device physical shared channel is transmitting a reference signal or transmitting inter-device data, and The purpose of the first inter-Device Physical Shared Channel is determined based on a format of the first inter-Device Control Information sent via the first inter-Device Physical Shared Channel.

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