Method and apparatus for reporting channel state information for communication of air mobility

Abstract

Proposed is a method for operation of a first device (100) in a wireless communication system. The method may comprise the steps of: receiving a plurality of first reference signals from a second base station (300) different from a first base station (200) serving the first device (100); and generating first channel state information, wherein the first channel state information is information regarding at least one channel state causing the lowest interference in communication between the first device (100) and the first base station (200), from among a plurality of first channel states related to the plurality of first reference signals.

Description

Method and device for reporting channel status information for communication in air mobility

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

[0002] 5G NR, the successor to LTE (long-term evolution), is a new clean-slate mobile communications system characterized by high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, from low-frequency bands below 1 GHz, 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) low energy consumption for battery-free Internet of Things (IoT) devices, (vi) ultra-reliable connectivity, and (vii) connected intelligence with machine learning capabilities. The vision of the 6G system can be divided into four aspects: intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity, and the 6G system can satisfy the requirements as shown in Table 1 below. For example, Table 1 can represent an example of the requirements of a 6G system.

[0004] Peak data rate per device 1 Tbps E2E latency 1 ms Max spectral efficiency 100 bps / Hz Mobility support Up to 1000 km / hr Satellite integration Fully AI Fully Autonomous vehicles Fully XR Fully Haptic communications Fully

[0005] According to one embodiment of the present disclosure, a method that can be performed by a first device may be provided. For example, the method may include: receiving a plurality of first reference signals from a second base station different from a first base station serving the first device; generating first channel state information based on the plurality of first reference signals, wherein the first channel state information is information on at least one channel state that causes the lowest interference with respect to communication between the first device and the first base station among a plurality of first channel states associated with the plurality of first reference signals; and transmitting the first channel state information to the first base station.

[0006] According to one embodiment of the present disclosure, a first device may be provided. For example, the first device may include: at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the first device to: receive a plurality of first reference signals from a second base station different from a first base station serving the first device; generate first channel state information based on the plurality of first reference signals, wherein the first channel state information is information on at least one channel state that causes the lowest interference with respect to communication between the first device and the first base station among a plurality of first channel states associated with the plurality of first reference signals; and transmit the first channel state information to the first base station.

[0007] According to one embodiment of the present disclosure, a processing device configured to control a first device may be provided. For example, the processing device may include: at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on being executed by the at least one processor, may cause the first device to: receive a plurality of first reference signals from a second base station different from a first base station serving the first device; generate first channel state information based on the plurality of first reference signals, wherein the first channel state information is information on at least one channel state that causes the lowest interference with respect to communication between the first device and the first base station among a plurality of first channel states associated with the plurality of first reference signals; and transmit the first channel state information to the first base station.

[0008] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, may cause a first device to: receive a plurality of first reference signals from a second base station different from a first base station serving the first device; generate first channel state information based on the plurality of first reference signals, wherein the first channel state information is information about at least one channel state that causes the lowest interference with respect to communication between the first device and the first base station among a plurality of first channel states associated with the plurality of first reference signals; and transmit the first channel state information to the first base station.

[0009] According to one embodiment of the present disclosure, a method that can be performed by a second device can be provided. For example, the method comprises: receiving first channel state information from a first device, wherein the first channel state information is information about at least one channel state that causes the lowest interference for communication between the first device and a second device among a plurality of first channel states associated with a plurality of first reference signals, wherein the first channel state information is generated based on the plurality of first reference signals, and the plurality of first reference signals are transmitted from a third device to the first device, and the first device can be served by the second device.

[0010] According to one embodiment of the present disclosure, a second device may be provided. For example, the second device may include: at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the second device to: receive first channel state information from a first device, wherein the first channel state information is information on at least one channel state that causes the lowest interference for communication between the first device and the second device among a plurality of first channel states associated with a plurality of first reference signals, and wherein the first channel state information is generated based on the plurality of first reference signals, and the plurality of first reference signals are transmitted from a third device to the first device, and the first device may be served by the second device.

[0011] FIG. 1 illustrates a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure.

[0012] FIG. 2 illustrates an electromagnetic spectrum according to one embodiment of the present disclosure.

[0013] FIG. 3 illustrates an example of a typical scenario of an NTN based on a transparent payload, according to one embodiment of the present disclosure.

[0014] FIG. 4 illustrates an example of a typical scenario of an NTN based on a regenerative payload, according to one embodiment of the present disclosure.

[0015] FIG. 5 illustrates an example of a sensing operation according to one embodiment of the present disclosure.

[0016] FIG. 6 illustrates a slot structure of a frame according to one embodiment of the present disclosure.

[0017] FIG. 7 illustrates an example of a BWP according to one embodiment of the present disclosure.

[0018] FIG. 8 illustrates a procedure for a terminal to perform V2X or SL communication according to a resource allocation mode, according to one embodiment of the present disclosure.

[0019] FIG. 9 illustrates a transmission spatial filter and a reception spatial filter according to an embodiment of the present disclosure.

[0020] FIG. 10 illustrates a method for determining whether a receiving spatial filter covers a transmitting spatial filter, according to one embodiment of the present disclosure.

[0021] FIG. 11 illustrates the type of cell serving a device, which changes depending on the altitude of the device, according to one embodiment of the present disclosure.

[0022] FIG. 12 illustrates a procedure for a device to generate and report channel state information (e.g., CSI) based on multiple reference signals, according to one embodiment of the present disclosure.

[0023] FIG. 13 illustrates a procedure of a method that can be performed by a first device according to one embodiment of the present disclosure.

[0024] FIG. 14 illustrates a procedure of a method that can be performed by a second device according to one embodiment of the present disclosure.

[0025] FIG. 15 illustrates a communication system (1) according to one embodiment of the present disclosure.

[0026] FIG. 16 illustrates a wireless device according to one embodiment of the present disclosure.

[0027] FIG. 17 illustrates a signal processing circuit for a transmission signal according to one embodiment of the present disclosure.

[0028] FIG. 18 illustrates a wireless device according to one embodiment of the present disclosure.

[0029] FIG. 19 illustrates a mobile device according to an embodiment of the present disclosure.

[0030] FIG. 20 illustrates a vehicle or autonomous vehicle according to one embodiment of the present disclosure.

[0031] As used herein, "A or B" can mean "only A," "only B," or "both A and B." In other words, as used herein, "A or B" can be interpreted as "A and / or B." For example, as used herein, "A, B or C" can mean "only A," "only B," "only C," or "any combination of A, B and C."

[0032] As used herein, a slash ( / ) or a comma can mean "and / or." For example, "A / B" can mean "A and / or B." Accordingly, "A / B" can mean "only A," "only B," or "both A and B." For example, "A, B, C" can mean "A, B, or C."

[0033] In this specification, "at least one of A and B" may mean "only A", "only B" or "both A and B". Additionally, in this specification, the expressions "at least one of A or B" or "at least one of A and / or B" may be interpreted identically to "at least one of A and B".

[0034] Additionally, in this specification, “at least one of A, B and C” can mean “only A,” “only B,” “only C,” or “any combination of A, B and C.” Additionally, “at least one of A, B or C” or “at least one of A, B and / or C” can mean “at least one of A, B and C.”

[0035] Additionally, parentheses used herein may mean "for example." Specifically, when indicated as "control information (PDCCH)", "PDCCH" may be proposed as an example of "control information." In other words, "control information" in this specification is not limited to "PDCCH," and "PDCCH" may be proposed as an example of "control information." Furthermore, even when indicated as "control information (i.e., PDCCH)", "PDCCH" may be proposed as an example of "control information."

[0036] In the following explanation, ‘when, if, in case of’ can be replaced with ‘based on’.

[0037] Technical features individually described in a single drawing in this specification may be implemented individually or simultaneously.

[0038] In this specification, higher layer parameters may be parameters that are set for the terminal, preset, or predefined. For example, a base station or network may transmit higher layer parameters to the terminal. For example, higher layer parameters may be transmitted via radio resource control (RRC) signaling or medium access control (MAC) signaling.

[0039] In this specification, "configured or defined" may be interpreted as being configured or preset to a device through predefined signaling (e.g., SIB, MAC, RRC) from a base station or network. In this specification, "configured or defined" may be interpreted as being preset to a device.

[0040] The technology proposed in this specification can be used in various wireless communication systems such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), and SC-FDMA (single carrier frequency division multiple access). CDMA can be implemented with wireless technologies such as UTRA (universal terrestrial radio access) or CDMA2000. TDMA can be implemented with wireless technologies such as GSM (global system for mobile communications) / GPRS (general packet radio service) / EDGE (enhanced data rates for GSM evolution). OFDMA can be implemented with wireless technologies such as IEEE (Institute of Electrical and Electronics Engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, E-UTRA (evolved UTRA), LTE (long term evolution), and 5G NR.

[0041] The technology proposed in this specification can be implemented with 6G wireless technology and applied to various 6G systems. For example, 6G systems can have key factors such as enhanced mobile broadband (eMBB), ultra-reliable low latency communications (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.

[0042] FIG. 1 illustrates a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure. The embodiment of FIG. 1 can be combined with various embodiments of the present disclosure.

[0043] New network characteristics in 6G may include:

[0044] - Satellite integrated network

[0045] - Connected Intelligence: Unlike previous generations of wireless communication systems, 6G is revolutionary, upgrading the wireless evolution from "connected objects" to "connected intelligence." AI can be applied at every stage of the communication process (or at every signal processing step, as described below).

[0046] - Seamless integration of wireless information and energy transfer

[0047] - Ubiquitous super 3D connectivity: Access to networks and core network functions of drones and very low Earth orbit satellites will create super 3D connectivity in 6G ubiquitous.

[0048] Some general requirements for the new network characteristics of 6G, such as the above, may be as follows:

[0049] - small cell networks

[0050] - Ultra-dense heterogeneous network

[0051] - High-capacity backhaul

[0052] - Radar technology integrated with mobile technology: High-precision localization (or location-based services) through communications is a key feature of 6G wireless communication systems. Therefore, radar systems will be integrated with 6G networks.

[0053] - Softwarization and virtualization

[0054] Below, the core implementation technologies of the 6G system are described.

[0055] - Artificial Intelligence: Incorporating AI into communications can streamline and improve real-time data transmission. AI can use numerous analytics to determine how complex target tasks should be performed. This means AI can increase efficiency and reduce processing delays. Time-consuming tasks such as handovers, network selection, and resource scheduling can be performed instantly using AI. AI can also play a crucial role in machine-to-machine (M2M), machine-to-human, and human-to-machine communications. Furthermore, AI can facilitate rapid communication in brain-computer interfaces (BCIs). AI-based communication systems can be supported by metamaterials, intelligent structures, intelligent networks, intelligent devices, intelligent cognitive radios, self-sustaining wireless networks, and machine learning.

[0056] - THz communication (terahertz communication): Data rates can be increased by increasing the bandwidth. This can be achieved by utilizing sub-THz communication with a wide bandwidth and applying advanced massive MIMO technology. THz waves, also known as sub-millimeter waves, typically refer to the frequency range between 0.1 THz and 10 THz with corresponding wavelengths ranging from 0.03 mm to 3 mm. The 100 GHz to 300 GHz band (Sub-THz band) is considered a major portion of the THz band for cellular communications. Adding the Sub-THz band to the mmWave band will increase the capacity of 6G cellular communications. Among the defined THz bands, 300 GHz to 3 THz lies in the far infrared (IR) frequency band. While part of the optical band, the 300 GHz to 3 THz band lies at the boundary of the optical band, immediately following the RF band. Therefore, this 300 GHz to 3 THz band exhibits similarities to RF. Figure 2 illustrates the electromagnetic spectrum according to one embodiment of the present disclosure. The embodiment of FIG. 2 can be combined with various embodiments of the present disclosure. Key characteristics of THz communications include (i) widely available bandwidth to support very high data rates, and (ii) high path loss at high frequencies (highly directional antennas are essential). The narrow beamwidth generated by the highly directional antenna reduces interference. The small wavelength of THz signals allows for a much larger number of antenna elements to be integrated into devices and base stations operating in this band. This enables the use of advanced adaptive array technologies to overcome range limitations.

[0057] - Large-scale MIMO technology

[0058] - Hologram beamforming (HBF)

[0059] - Optical wireless technology

[0060] - Free-space optical transmission backhaul network (FSO backhaul network)

[0061] - Quantum communication

[0062] - Cell-free communication

[0063] - Integration of wireless information and power transmission

[0064] - Integration of wireless communication and sensing

[0065] - Integrated access and backhaul network

[0066] - Big data analysis

[0067] - Reconfigurable intelligent surface

[0068] - metaverse

[0069] - Blockchain

[0070] Unmanned aerial vehicles (UAVs): UAVs, or drones, will be a key element in 6G wireless communications. In most cases, high-speed data wireless connectivity can be provided using UAV technology. Base stations (BSs) can be installed on UAVs to provide cellular connectivity. UAVs may offer specific capabilities not found in fixed BS infrastructure, such as easy deployment, robust line-of-sight links, and controlled mobility. During emergencies such as natural disasters, deploying terrestrial communications infrastructure is not economically feasible and sometimes cannot provide services in volatile environments. UAVs can easily handle these situations. UAVs will become a new paradigm in wireless communications. This technology facilitates three fundamental requirements for wireless networks: enhanced mobile broadband (eMBB), URLLC, and mMTC. UAVs can also support various purposes, such as enhancing network connectivity, fire detection, disaster emergency services, security and surveillance, pollution monitoring, parking monitoring, and accident monitoring. Therefore, UAV technology is recognized as one of the most important technologies for 6G communications.

[0071] - Advanced air mobility (AAM): AAM is a higher concept than urban air mobility (UAM), which is an air transportation method available in urban areas, and can refer to a means of transportation that includes movement between regional hubs as well as urban areas.

[0072] - Autonomous driving (self-driving): V2X (vehicle to everything), a key element in building autonomous driving infrastructure, can be a technology that allows cars to communicate and share with various elements on the road for autonomous driving, such as vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) wireless communication. Fast transmission speeds and low-latency technologies are essential to maximize autonomous driving performance and ensure high safety. Furthermore, in the future, autonomous driving will go beyond simply providing warnings or guidance messages to drivers and may require active intervention in vehicle operation and direct control of the vehicle in dangerous situations. To this end, the amount of information that needs to be transmitted and received may become enormous, so 6G is expected to maximize autonomous driving with faster transmission speeds and lower latency than 5G.

[0073] - Non-terrestrial networks (NTN): NTN may refer to a network or network segment that uses radio frequency (RF) resources mounted on a satellite (or unmanned aerial system (UAS) platform). FIG. 3 illustrates an example of a typical NTN scenario based on a transparent payload according to an embodiment of the present disclosure. FIG. 4 illustrates an example of a typical NTN scenario based on a regenerative payload according to an embodiment of the present disclosure. The embodiments of FIG. 3 or FIG. 4 may be combined with various embodiments of the present disclosure. Referring to FIG. 3, a satellite (or UAS platform) may create a service link with a UE. The satellite (or UAS platform) may be connected to a gateway via a feeder link. The satellite may be connected to a data network via the gateway. A beam footprint may refer to an area where a signal transmitted by a satellite can be received. Referring to Figure 4, a satellite (or UAS platform) can establish a service link with a UE. A satellite (or UAS platform) connected to a UE can be connected to another satellite (or UAS platform) via an inter-satellite link (ISL). The other satellite (or UAS platform) can be connected to a gateway via a feeder link. Based on the playback payload, a satellite can be connected to a data network through another satellite and the gateway. If an ISL does not exist between a satellite and another satellite, a feeder link between the satellite and the gateway may be required. Figures 3 and 4 are merely examples of NTN scenarios, and NTN can be implemented based on various scenarios.For example, a satellite (or UAS platform) may implement a transparent or regenerative (with onboard processing) payload. For example, a satellite (or UAS platform) may generate multiple beams over a designated service area depending on the field of view of the satellite (or UAS platform). For example, the field of view of the satellite (or UAS platform) may vary depending on the onboard antenna diagram and minimum elevation angle. For example, a transparent payload may include radio frequency filtering, frequency conversion, and amplification. Therefore, the waveform signal repeated by the payload may not be altered. For example, a regenerative payload may include radio frequency filtering, frequency conversion and amplification, demodulation / decoding, switching and / or routing, and coding / modulation. For example, a regenerative payload may be substantially equivalent to equipping the satellite (or UAS platform) with all or part of the base station functionality.

[0074] - Integrated Sensing and Communication (ISAC): Wireless sensing is a technology that uses radio frequencies to determine the instantaneous linear velocity, angle, distance (range), etc. of an object, thereby obtaining information about the characteristics of the environment and / or objects within the environment. Because radio frequency sensing does not require a device to connect to the object through a network, it can provide a service for object positioning without a device. The ability to obtain range, velocity, and angle information from radio frequency signals can enable a wide range of new capabilities, such as various object detection, object recognition (e.g., vehicles, humans, animals, UAVs), and high-precision localization, tracking, and activity recognition. Wireless sensing services can provide information to a variety of industries (e.g., drones, smart homes, V2X, factories, railways, public safety, etc.), enabling applications such as intruder detection, assisted vehicle steering and navigation, trajectory tracking, collision avoidance, traffic management, and health and traffic management. In some cases, wireless sensing can utilize non-3GPP type sensors (e.g., radar, cameras) to further support 3GPP-based sensing. For example, the operation of a wireless sensing service, i.e., a sensing operation, may depend on the transmission, reflection, and scattering of wireless sensing signals. Therefore, wireless sensing may provide an opportunity to enhance existing communication systems from a communication network to a wireless communication and sensing network. FIG. 5 illustrates an example of a sensing operation according to an embodiment of the present disclosure. The embodiment of FIG. 5 may be combined with various embodiments of the present disclosure. Specifically, FIG. 5 (a) illustrates an example of sensing using a sensing receiver and a sensing transmitter located at the same location (e.g., monostatic sensing), and FIG. 5 (b) illustrates an example of sensing using a separated sensing receiver and a sensing transmitter (e.g., bistatic sensing).

[0075] The layers of the radio interface protocol between the terminal and the network can be divided into L1 (layer 1), L2 (layer 2), and L3 (layer 3) based on the three lower layers of the Open System Interconnection (OSI) standard model, which is widely known in communication systems. Among these, the physical layer belonging to layer 1 provides an information transfer service using a physical channel, and the RRC (Radio Resource Control) layer located in layer 3 controls radio resources between the terminal and the network. To this end, the RRC layer exchanges RRC messages between the terminal and the base station.

[0076] The physical layer provides information transmission services to higher layers using physical channels. The physical layer is connected to the upper layer, the Medium Access Control (MAC) layer, via a transport channel. Data travels between the MAC layer and the physical layer through the transport channel. Transport channels are classified based on how and with what characteristics data is transmitted over the wireless interface.

[0077] Data travels between different physical layers, i.e., between the physical layers of a transmitter and a receiver, via a physical channel. This physical channel can be modulated using Orthogonal Frequency Division Multiplexing (OFDM) and utilizes time and frequency as radio resources.

[0078] The MAC layer provides services to the upper layer, the radio link control (RLC) layer, through logical channels. The MAC layer provides mapping from multiple logical channels to multiple transport channels. Furthermore, the MAC layer provides logical channel multiplexing, which maps multiple logical channels to a single transport channel. The MAC sublayer provides data transmission services on logical channels.

[0079] The RLC layer performs the concatenation, segmentation, and reassembly of RLC Service Data Units (SDUs). To guarantee the various Quality of Service (QoS) required by radio bearers (RBs), the RLC layer provides three operating modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0080] The RRC (Radio Resource Control) layer is defined only in the control plane. The RRC layer is responsible for controlling logical channels, transport channels, and physical channels, related to the configuration, reconfiguration, and release of radio bearers. RB refers to a logical path provided by Layer 1 (physical layer or PHY layer) and Layer 2 (MAC layer, RLC layer, Packet Data Convergence Protocol (PDCP) layer, and Service Data Adaptation Protocol (SDAP) layer) for data transmission between the terminal and the network.

[0081] The functions of the PDCP layer in the user plane include the transmission of user data, header compression, and ciphering. The functions of the PDCP layer in the control plane include the transmission of control plane data and encryption / integrity protection.

[0082] The Service Data Adaptation Protocol (SDAP) layer is defined only in the user plane. It performs mapping between QoS flows and data radio bearers, marking QoS flow identifiers (IDs) within downlink and uplink packets, and more.

[0083] Establishing a Radio Bearer (RB) refers to the process of defining the characteristics of the radio protocol layer and channel to provide a specific service, and setting specific parameters and operating methods for each. RBs can be further divided into two types: the Signaling Radio Bearer (SRB) and the Data Radio Bearer (DRB). The SRB is used as a channel to transmit RRC messages in the control plane, while the DRB is used as a channel to transmit user data in the user plane.

[0084] When an RRC connection is established between the RRC layer of the terminal and the RRC layer of the base station, the terminal is in the RRC_CONNECTED state. Otherwise, it is in the RRC_IDLE state. For NR, the RRC_INACTIVE state is additionally defined, and a terminal in the RRC_INACTIVE state can maintain a connection with the core network while releasing the connection with the base station.

[0085] Downlink transmission channels that transmit data from the network to the terminal include the Broadcast Channel (BCH), which transmits system information, and the downlink Shared Channel (SCH), which transmits user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services may be transmitted through the downlink SCH or a separate downlink Multicast Channel (MCH). Meanwhile, uplink transmission channels that transmit data from the terminal to the network include the Random Access Channel (RACH), which transmits initial control messages, and the uplink Shared Channel (SCH), which transmits user traffic or control messages.

[0086] Logical channels that are located above the transport channel and are mapped to the transport channel include the Broadcast Control Channel (BCCH), Paging Control Channel (PCCH), Common Control Channel (CCCH), Multicast Control Channel (MCCH), and Multicast Traffic Channel (MTCH).

[0087] Radio frames can be used for uplink and downlink transmission. A radio frame has a length of 10 ms and can be defined as two 5 ms half-frames (HF). A half-frame can contain five 1 ms subframes (SF). A subframe can be divided into one or more slots, and the number of slots within a subframe can be determined by the subcarrier spacing (SCS). Each slot can contain 12 or 14 OFDM (A) symbols, depending on the cyclic prefix (CP).

[0088] When normal CP is used, each slot can contain 14 symbols. When extended CP is used, each slot can contain 12 symbols. Here, the symbols can include OFDM symbols (or CP-OFDM symbols), SC-FDMA (Single Carrier - FDMA) symbols (or DFT-s-OFDM (Discrete Fourier Transform-spread-OFDM) symbols).

[0089] Table 2 below shows the number of symbols per slot (N) depending on the SCS setting (u) when normal CP or extended CP is used. slot symb ), number of slots per frame (N frame,u slot ) and the number of slots per subframe (N subframe,u slot ) is an example.

[0090] CP type SCS (15*2 u )N slot symb N frame,u slot N subframe,u slot Normal CP15kHz (u=0)1410130kHz (u=1)1420260kHz (u=2)14404120kHz (u=3)14808240kHz (u=4)1416016Extended CP60kHz (u=2)12404

[0091] FIG. 6 illustrates a slot structure of a frame according to an embodiment of the present disclosure. The embodiment of FIG. 6 can be combined with various embodiments of the present disclosure.

[0092] Referring to FIG. 6, a slot includes multiple symbols in the time domain.

[0093] A carrier includes multiple subcarriers in the frequency domain. An RB (Resource Block) can be defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A BWP (Bandwidth Part) can be defined as multiple consecutive (P)RBs ((Physical) Resource Blocks) in the frequency domain, and can correspond to one numerology (e.g., SCS, CP length, etc.). A carrier can include up to N (e.g., 5) BWPs. Data communication can be performed through activated BWPs. Each element can be referred to as a Resource Element (RE) in the resource grid, and one complex symbol can be mapped to it.

[0094] A Bandwidth Part (BWP) can be a contiguous set of physical resource blocks (PRBs) for a given numerology. A PRB can be selected from a contiguous subset of common resource blocks (CRBs) for a given numerology on a given carrier.

[0095] FIG. 7 illustrates an example of a BWP according to an embodiment of the present disclosure. The embodiment of FIG. 7 can be combined with various embodiments of the present disclosure. In the embodiment of FIG. 7, it is assumed that there are three BWPs.

[0096] Referring to Figure 7, a common resource block (CRB) may be a carrier resource block numbered from one end of a carrier band to the other. Furthermore, a PRB may be a numbered resource block within each BWP. Point A may indicate a common reference point for the resource block grid.

[0097] BWP is point A, offset from point A (N startBWP ) and bandwidth (N size BWP ) can be set by. For example, point A can be an outer reference point of the PRB of a carrier where subcarrier 0 of all numerologies (e.g., all numerologies supported by the network on that carrier) aligns. For example, the offset can be the PRB spacing between the lowest subcarrier in a given numerology and point A. For example, the bandwidth can be the number of PRBs in a given numerology.

[0098] SLSS (Sidelink Synchronization Signal) is a SL (sidelink) specific sequence and may include PSSS (Primary Sidelink Synchronization Signal) and SSSS (Secondary Sidelink Synchronization Signal). The PSSS may be referred to as S-PSS (Sidelink Primary Synchronization Signal) and the SSSS may be referred to as S-SSS (Sidelink Secondary Synchronization Signal). For example, length-127 M-sequences may be used for S-PSS and length-127 Gold sequences may be used for S-SSS. For example, a terminal may detect an initial signal (signal detection) and obtain synchronization using S-PSS. For example, the terminal can obtain detailed synchronization using S-PSS and S-SSS and detect a synchronization signal ID.

[0099] PSBCH (Physical Sidelink Broadcast Channel) may be a (broadcast) channel that transmits basic (system) information that a terminal must know first before transmitting or receiving an SL signal. For example, the basic information may be information related to SLSS, duplex mode (DM), TDD UL / DL (Time Division Duplex Uplink / Downlink) configuration, resource pool-related information, 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 may be 56 bits, including a 24-bit CRC (Cyclic Redundancy Check).

[0100] S-PSS, S-SSS and PSBCH may be included in a block format supporting periodic transmission (e.g., SL SS (Synchronization Signal) / PSBCH block, hereinafter referred to as S-SSB (Sidelink-Synchronization Signal Block)). The S-SSB may have the same numerology (i.e., SCS and CP length) as the PSCCH (Physical Sidelink Control Channel) / PSSCH (Physical Sidelink Shared Channel) in the carrier, and the transmission bandwidth may be within a (pre-)configured SL BWP (Sidelink BWP). For example, the bandwidth of the S-SSB may be 11 RBs (Resource Blocks). For example, the PSBCH may span 11 RBs. And, the frequency location of the S-SSB may be (pre-)configured. Therefore, the terminal does not need to perform hypothesis detection in the frequency to discover the S-SSB in the carrier.

[0101] In this specification, PSCCH may be replaced with a control channel, a physical control channel, a control channel associated with a sidelink, a physical control channel associated with a sidelink, a device-to-device physical control channel, etc. In this specification, PSSCH may be replaced with a shared channel, a physical shared channel, a shared channel associated with a sidelink, a physical shared channel associated with a sidelink, a device-to-device physical shared channel, etc. For example, SL communication may be replaced with device-to-device communication. For example, in terms referring to various channels and / or signals associated with SL communication, the SL part may be replaced with "device-to-device."

[0102] In this specification, PUCCH may be replaced with a control channel, a physical control channel, an uplink-related control channel, an uplink-related physical control channel, a device-to-base station physical control channel, a terminal-to-base station physical control channel, etc. In this specification, PUSCH may be replaced with a shared channel, a physical shared channel, an uplink-related shared channel, an uplink-related physical shared channel, a device-to-base station physical shared channel, a terminal-to-base station physical shared channel, etc. For example, UL communication may be replaced with terminal-to-base station communication or device-to-base station communication. For example, in terms referring to various channels and / or signals associated with UL communication, the UL part may be replaced with "device-to-base station" or "terminal-to-base station."

[0103] In this specification, PDCCH may be replaced with a control channel, a physical control channel, a downlink-related control channel, a downlink-related physical control channel, a base station-to-device physical control channel, a base station-to-terminal physical control channel, etc. In this specification, PDSCH may be replaced with a shared channel, a physical shared channel, a downlink-related shared channel, a downlink-related physical shared channel, a base station-to-device physical shared channel, a base station-to-terminal physical shared channel, etc. For example, DL communication may be replaced with base station-to-device communication or base station-to-terminal communication. For example, in terms referring to various channels and / or signals related to DL communication, the DL part may be replaced with "base station-to-device" or "base station-to-terminal."

[0104] FIG. 8 illustrates a procedure for a terminal to perform V2X or SL communication according to a resource allocation mode, according to one embodiment of the present disclosure. The embodiment of FIG. 8 may be combined with various embodiments of the present disclosure.

[0105] Referring to (a) of FIG. 8, in resource allocation mode 1, the base station may schedule SL resources to be used by the terminal for SL transmission. For example, in step S800, the base station may transmit information related to SL resources and / or information related to UL resources to the first terminal. For example, the UL resources may include PUCCH resources and / or PUSCH resources. For example, the UL resources may be resources for reporting SL HARQ feedback to the base station.

[0106] For example, a first terminal may receive information related to a dynamic grant (DG) resource and / or information related to a configured grant (CG) resource from a base station. For example, a CG resource may include a CG type 1 resource or a CG type 2 resource. In this specification, a DG resource may be a resource that a base station configures / allocates to the first terminal via downlink control information (DCI). In this specification, a CG resource may be a (periodic) resource that a base station configures / allocates to the first terminal via DCI and / or an RRC message. For example, in the case of a CG type 1 resource, the base station may transmit an RRC message including information related to the CG resource to the first terminal. For example, in the case of a CG type 2 resource, the base station may transmit an RRC message including information related to the CG resource to the first terminal, and the base station may transmit a DCI related to activation or release of the CG resource to the first terminal.

[0107] In step S810, the first terminal may transmit a PSCCH (e.g., Sidelink Control Information (SCI) or 1st-stage SCI) to the second terminal based on the resource scheduling. In step S820, the first terminal may transmit a PSSCH (e.g., 2nd-stage SCI, MAC PDU, data, etc.) related to the PSCCH to the second terminal. In step S830, the first terminal may receive a PSFCH related to the PSCCH / PSSCH from the second terminal. For example, HARQ feedback information (e.g., NACK information or ACK information) may be received from the second terminal via the PSFCH. In step S840, the first terminal may transmit / report HARQ feedback information to the base station via a PUCCH or a PUSCH. For example, the HARQ feedback information reported to the base station may be information generated by the first terminal based on the HARQ feedback information received from the second terminal. For example, the HARQ feedback information reported to the base station may be information generated by the first terminal based on a rule set in advance. For example, the DCI may be DCI for scheduling SL.

[0108] Referring to (b) of FIG. 8, in resource allocation mode 2, the terminal can determine SL transmission resources within SL resources set by the base station / network or preset SL resources. For example, the set SL resources or preset SL resources may be a resource pool. For example, the terminal can autonomously select or schedule resources for SL transmission. For example, the terminal can perform SL communication by selecting resources by itself within the set resource pool. For example, the terminal can select resources by itself within a selection window by performing sensing and resource (re)selection procedures. For example, the sensing can be performed on a subchannel basis. For example, in step S810, the first terminal that has selected resources by itself within the resource pool transmits PSCCH (e.g., SCI (Sidelink Control Information) or 1) using the resources. st -stage SCI) can be transmitted to the second terminal. In step S820, the first terminal transmits the PSSCH (e.g., 2) related to the PSCCH. nd -stage SCI, MAC PDU, data, etc.) can be transmitted to the second terminal. In step S830, the first terminal can receive a PSFCH related to the PSCCH / PSSCH from the second terminal.

[0109] Referring to (a) or (b) of FIG. 8, for example, a first terminal may transmit an SCI to a second terminal on a PSCCH. Or, for example, the first terminal may transmit two consecutive SCIs (e.g., 2-stage SCIs) to the second terminal on the PSCCH and / or the PSSCH. In this case, the second terminal may decode the two consecutive SCIs (e.g., 2-stage SCIs) to receive the PSSCH from the first terminal. In the present specification, an SCI transmitted on a PSCCH is 1 st SCI, 1st SCI, 1st -stage SCI or 1 st -stage SCI format, and the SCI transmitted on the PSSCH is 2 nd SCI, 2nd SCI, 2 nd -stage SCI or 2 nd -It can be called a stage SCI format.

[0110] Referring to (a) or (b) of FIG. 8, in step S830, the first terminal may receive a PSFCH. For example, the first terminal and the second terminal may determine PSFCH resources, and the second terminal may use the PSFCH resources to transmit HARQ feedback to the first terminal.

[0111] Referring to (a) of FIG. 8, in step S840, the first terminal may transmit SL HARQ feedback to the base station via PUCCH and / or PUSCH.

[0112] FIG. 9 illustrates a transmission spatial filter and a reception spatial filter according to an embodiment of the present disclosure. The embodiment of FIG. 9 can be combined with various embodiments of the present disclosure.

[0113] Referring to FIG. 9, a reception spatial filter (901) used by a receiving terminal for a reception operation and a transmission spatial filter (911) used by a transmitting terminal for a transmission operation are shown.

[0114] For example, a receiving spatial filter can only pass signals with the same beam direction as 903. That is, the receiving terminal can only receive transmissions performed based on a beam having a direction of 903.

[0115] Therefore, transmissions of 906 transmitted based on a beam having a different beam direction from that of 903 may not pass through the reception spatial filter. Signal 904, which is transmitted based on a beam having the same beam direction as that of 903, may pass through the reception spatial filter and be received by the receiving terminal.

[0116] For example, a receiving spatial filter may have a beam size / thickness of 902 and may only pass signals transmitted based on beams within the beam size / thickness. That is, a receiving terminal may only receive transmissions transmitted based on beams having a size / thickness within the beam size / thickness of 902.

[0117] Accordingly, among the signal components transmitted based on a beam having a size / thickness greater than that of 902, transmissions of 905 that contact the reception spatial filter outside the size / thickness of 902 may not pass through the reception spatial filter. Since 904 contacted the reception spatial filter within a range included in the size / thickness of 902, it can pass through the reception spatial filter and be received by the receiving terminal. On the other hand, since 905 contacted the reception spatial filter outside the size / thickness of 902, it cannot pass through the reception spatial filter and be received by the receiving terminal.

[0118] For example, 904 can be received by the receiving terminal because it is in contact with the receiving spatial filter within a range included in the size / thickness of 902 and has the same beam direction (903) as that passed by the receiving spatial filter. Here, for example, if the transmissions of 904 are all components transmitted based on a specific beam (i.e., if all signal components transmitted together with 904 are successfully received by the receiving terminal), the receiving spatial filter may be a spatial filter that covers the transmission spatial filter associated with the specific beam.

[0119] For example, a transmission spatial filter can only pass signals with the same beam direction as 913. That is, when a transmission terminal performs a transmission operation based on the transmission spatial filter, all signal components (914) that pass through the transmission spatial filter and are ultimately transmitted can have the direction of 913.

[0120] Therefore, transmissions of 916 transmitted based on a beam direction different from that of 913 may not pass through the transmission spatial filter. Signal components of 914 having the same beam direction as 913 may pass through the transmission spatial filter and be transmitted to the receiving terminal.

[0121] For example, a transmission spatial filter may have a beam size / thickness of 912 and may only pass signal components included within the beam size / thickness. That is, when a transmission terminal performs a transmission operation based on the transmission spatial filter, only signal components included within the size / thickness of 912 may pass through the transmission spatial filter and be ultimately transmitted.

[0122] Therefore, signal components that are not included in the size / thickness of 912 may not pass through the transmission spatial filter. Since 914 is a signal component included in the size / thickness of 912, it can pass through the transmission spatial filter and be transmitted to the receiving terminal. On the other hand, since 915 is a signal component that is not included in the size / thickness of 912, it cannot pass through the transmission spatial filter and cannot be transmitted to the receiving terminal.

[0123] For example, 914 may be transmitted to the receiving terminal as signal components that are included in the size / thickness of 912 and are identical to the beam direction (913) that the transmission spatial filter passes through. Here, for example, if the transmissions of 914 all pass through the receiving spatial filter that the receiving terminal uses for receiving operation (i.e., if the direction of the signal components of 914 is identical to the beam direction related to the receiving spatial filter and the signal components of 914 are all included in the size / thickness of the receiving spatial filter), the receiving spatial filter may be a spatial filter that covers the transmission spatial filter of 911.

[0124] FIG. 10 illustrates a method for determining whether a receiving spatial filter covers a transmitting spatial filter, according to an embodiment of the present disclosure. The embodiment of FIG. 10 may be combined with various embodiments of the present disclosure.

[0125] Referring to FIG. 10, a reception spatial filter (1001) used by a receiving terminal for a reception operation and a transmission spatial filter (1011) used by a transmitting terminal for a transmission operation are shown.

[0126] For example, the direction of the signal components that the receiving spatial filter passes through may be 1003, and the direction of the signal components that are transmitted through the transmitting spatial filter may be 1013. For example, the receiving beam direction associated with the receiving spatial filter may be 1003, and the transmitting beam direction associated with the transmitting spatial filter may be 1013.

[0127] For example, the size / thickness of the receiving spatial filter may be 1002. That is, the receiving spatial filter passes only signal components included within 1002, and only signal components that pass through the receiving spatial filter can be received by the receiving terminal.

[0128] For example, the size / thickness of the transmission spatial filter may be 1012. That is, the transmission spatial filter passes only signal components included within 1012, and only signal components that pass through the transmission spatial filter can be transmitted to the receiving terminal.

[0129] 1021 and 1022 are cross-sectional views of the size / thickness of the transmission spatial filter or the size / thickness of the reception spatial filter.

[0130] For example, if the above 1021 is the size / thickness of the transmission spatial filter, the above 1022 is the size / thickness of the reception spatial filter, and since the above 1022 is included in the above 1021, the size / thickness of the transmission spatial filter is larger than the size / thickness of the reception spatial filter, so some of the signal components transmitted to the receiving terminal through the transmission spatial filter may not pass through the reception spatial filter. In this case, the reception spatial filter may be a spatial filter that does not cover the transmission spatial filter.

[0131] Conversely, for example, if the 1021 is the size / thickness of the receiving spatial filter, the 1022 is the size / thickness of the transmitting spatial filter, and since the 1022 is included in the 1021, the size / thickness of the transmitting spatial filter is smaller than the size / thickness of the receiving spatial filter, so all signal components transmitted to the receiving terminal through the transmitting spatial filter can pass through the receiving spatial filter. In this case, the receiving spatial filter may be a spatial filter that covers the transmitting spatial filter.

[0132] 1031 represents the receiving beam direction related to 1003, that is, the receiving spatial filter, and 1032 represents the transmitting beam direction related to 1013, that is, the transmitting spatial filter. For example, only when 1031 and 1032 are horizontal as shown in the drawing can all signal components transmitted by the transmitting terminal based on the transmitting spatial filter pass through the receiving spatial filter. Therefore, only when 1031 and 1032 are horizontal can all signal components transmitted to the receiving terminal through the transmitting spatial filter pass through the receiving spatial filter. The receiving spatial filter can be said to be a spatial filter that covers the transmitting spatial filter.

[0133] Meanwhile, in the next system, communication may be performed between a base station and an automotive aerial mobility (AAM) terminal, and / or communication may be performed between AAM terminals. The AAM terminal may change its height (or altitude) (e.g., move vertically) and, in some cases, may be positioned lower or higher than the base station height.

[0134] Meanwhile, depending on the height (or altitude) of the AAM terminal, the degree of securing LOS (line of sight) in communication between the base station and the terminal may differ, and in particular, if the AAM terminal is located higher than the height of the base station, communication is performed in an environment where LOS is relatively more secured, so the cell coverage may tend to increase.

[0135] For example, at this time, terminal-to-base station transmission (e.g., UL transmission) performed from an AAM terminal can be received at high power in multiple cells. In base station-to-terminal reception (e.g., DL reception) operation from the AAM terminal perspective, base station-to-terminal signals (e.g., DL signals) transmitted from multiple cells can be received at the terminal at relatively high power ((compared to communications from existing terrestrial communication terminals)).

[0136] In an environment where high interference such as the above can occur, the terminal's reception performance for base station-to-terminal transmission (e.g., DL transmission) and terminal-to-base station transmission (e.g., UL transmission) can be significantly reduced.

[0137] Meanwhile, according to existing technologies, scheduling information may not be shared flexibly between different cells, and thus it may be difficult to avoid collisions between different cells for base station-to-terminal communication resources (e.g., DL resources) and / or terminal-to-base station communication resources (e.g., UL resources).

[0138] For example, in this specification, AAM may be equipped with a module capable of aerial movement and communication, such as UAM (unmanned aerial mobility) or drones, or may be interchangeable / replaceable with an entity capable of communication.

[0139] According to one embodiment of the present disclosure, a terminal may, in certain circumstances, discard or ignore received terminal-to-base station communication grants (e.g., UL grants) and / or aperiodic reference signal triggering base station-to-terminal control information (e.g., DCI; downlink control information). For example, in the above case, terminal-to-base station transmissions (e.g., UL transmissions) may be omitted. Alternatively, for example, during terminal-to-base station transmissions (e.g., UL transmissions), a power offset may be additionally applied, or the transmit power level may be lowered.

[0140] For example, the aperiodic reference signal triggering base station-to-terminal control information (e.g., DCI) may include base station-to-terminal control information (e.g., DCI) that triggers transmission of an aperiodic reference signal (e.g., channel state information reference signal (e.g., CSI-RS) and / or sounding reference signal (e.g., SRS)).

[0141] For example, the specific situation may include a case where the terminal obtains masking information (by height region of the terminal) through L1 signaling, L2 signaling, and / or RRC configuration, a case where the terminal is determined (or determined) to be located at a height where the masking information is valid, a case where scheduled terminal-to-base station communication resources (e.g., UL resources) are included in the masking information, and / or a case where scheduled terminal-to-base station communication resources (e.g., UL resources) are not included in the masking information.

[0142] For example, masking information related to allowing or disallowing the terminal-to-base station transmission (e.g., UL transmission) (or, regarding allowing or disallowing the terminal-to-base station transmission (e.g., UL transmission)) may be set and / or applied differently depending on the height region of the terminal, the service type, and / or the type of the terminal-to-base station channel / signal (e.g., UL channel / signal).

[0143] According to one embodiment of the present disclosure, in certain circumstances, the terminal may omit a base station-to-terminal physical control channel (e.g., PDCCH) monitoring operation, a base station-to-terminal physical shared channel (e.g., PDSCH) reception operation, and / or a reference signal (e.g., RS; reference signal) measurement operation. Alternatively, the base station may additionally apply a power offset (applied) during base station-to-terminal transmission (e.g., DL transmission) or lower a transmission power level in certain circumstances.

[0144] For example, the specific situation may include a case where the terminal obtains masking information (by height region of the terminal) through L1 signaling, L2 signaling, and / or RRC configuration, a case where the terminal is located at a height where the masking information is valid, a case where a scheduled / configured base station-to-terminal communication resource (e.g., DL resource) is included in the masking information, and / or a case where a scheduled / configured base station-to-terminal communication resource (e.g., DL resource) is not included in the masking information.

[0145] For example, masking information related to allowing or disallowing base station-to-terminal transmission (e.g., DL transmission) (or, regarding allowing or disallowing base station-to-terminal transmission (e.g., DL transmission)) may be set and / or applied differently depending on the height region of the terminal, the service type, and / or the type of base station-to-terminal channel / signal (e.g., DL channel / signal).

[0146] Meanwhile, configured grant information (e.g., CG) between different cells can be shared long-term. In the above case, adjacent cells may not overlap with each other. And / or, for example, in the above case, configured grant information (e.g., CG) between adjacent cells may be shared so as not to overlap with each other.

[0147] For example, depending on the height region of the terminal, a set / configuration of grant (e.g., CG) terminal-to-base station physical shared channel (e.g., PUSCH) resources (e.g., resources for terminal-to-base station physical shared channel (e.g., PUSCH) transmission including information related to the configured grant (e.g., CG)) may be different and / or independently configured.

[0148] And / or, for example, depending on the height region of the terminal, the nominal power, the scaling factor (alpha) for the pathloss term, the power offset value, and / or the power control process may be set and / or applied differently.

[0149] For example, the terminal may be usable in a first height region based on a first configured grant (e.g., CG) terminal-to-base station physical shared channel (e.g., PUSCH) resource configuration, and / or may be usable in a second height region based on a second configured grant (e.g., CG) terminal-to-base station physical shared channel (e.g., PUSCH) resource configuration.

[0150] For example, the terminal may use a first configured grant (e.g., CG) terminal-to-base station physical shared channel (e.g., PUSCH) resource configuration in a first height region, and / or may use a second configured grant (e.g., CG) terminal-to-base station physical shared channel (e.g., PUSCH) resource configuration in a second height region.

[0151] For example, the terminal may perform communication by using a first configured grant (e.g., CG) terminal-to-base station physical shared channel (e.g., PUSCH) resource configuration in a first height region, and / or may perform communication by using a second configured grant (e.g., CG) terminal-to-base station physical shared channel (e.g., PUSCH) resource configuration in a second height region.

[0152] For example, the second configured grant (e.g., CG) terminal-to-base station physical shared channel (e.g., PUSCH) resource set may be a subset of the first configured grant (e.g., CG) terminal-to-base station physical shared channel (e.g., PUSCH) resource set, and / or may be indicated (via L1 and / or L2 signaling) and / or configured (via medium access control (MAC) layer and / or RRC) in the form of masking information for the first configured grant (e.g., CG) terminal-to-base station physical shared channel (e.g., PUSCH) resource set.

[0153] For example, the configured grant (eg, CG) resource may be used or may include valid terminal height region or mobility information through RRC configuration and / or activation / release base station-to-terminal control information (eg, DCI) for the configured grant (eg, CG) terminal-to-base station physical shared channel (eg, PUSCH).

[0154] For example, the height region or mobility information of the terminal that can use the configured grant (e.g., CG) resources or that is valid can be configured through RRC configuration and / or activation / release base station-to-terminal control information (e.g., DCI) for the configured grant (e.g., CG) terminal-to-base station physical shared channel (e.g., PUSCH).

[0155] According to one embodiment of the present disclosure, a set / configuration of base station-to-terminal semi-persistent scheduling (e.g., DL SPS; downlink semi-persistent scheduling) resources (e.g., resources allocated by base station semi-persistent scheduling (e.g., SPS)) may be different and / or independently configured depending on the height of the terminal.

[0156] For example, the terminal may be used in a first height region based on a first base station-to-terminal semi-persistent scheduling (e.g., DL SPS) resource configuration, and / or may be used in a second height region based on a second base station-to-terminal semi-persistent scheduling (e.g., DL SPS) resource configuration.

[0157] For example, the terminal may use a first base station-to-terminal semi-persistent scheduling (e.g., DL SPS) resource configuration in a first height region, and / or may use a second base station-to-terminal semi-persistent scheduling (e.g., DL SPS) resource configuration in a second height region.

[0158] For example, the terminal may perform communication by using a first base station-to-terminal semi-persistent scheduling (e.g., DL SPS) resource configuration in a first height region, and / or may perform communication by using a second base station-to-terminal semi-persistent scheduling (e.g., DL SPS) resource configuration in a second height region.

[0159] For example, the second base station-to-terminal persistent scheduling (e.g., DL SPS) resource set may be a subset of the first base station-to-terminal persistent scheduling (e.g., DL SPS) resource set, and / or may be indicated (via L1 and / or L2 signaling) and / or configured (via MAC layer and / or RRC) in the form of masking information for the first base station-to-terminal persistent scheduling (e.g., DL SPS) resource set.

[0160] For example, the RRC configuration and / or activation / release of base station-to-terminal persistent scheduling (e.g., DL SPS) may include information on the height region or mobility of a valid terminal for which base station-to-terminal persistent scheduling (e.g., DL SPS) resources may be used, or information on the valid terminals may be included through base station-to-terminal persistent scheduling (e.g., DL SPS) control information (e.g., DCI).

[0161] For example, the height region or mobility information of a terminal that can use base station-to-terminal persistent scheduling (e.g., DL SPS) resources or is valid can be set through RRC configuration and / or activation / release base station-to-terminal control information (e.g., DCI) for base station-to-terminal persistent scheduling (e.g., DL SPS).

[0162] Meanwhile, cell planning / configuration may differ depending on the height region of the terminal. For example, depending on the height region, different physical cell identifiers (e.g., PCID; physical cell identifier) ​​may be provided and / or scrambling ID and / or sequence ID may be independently set / applied. For example, depending on the height region, different physical cell identifiers (e.g., PCID) may be provided and / or scrambling ID and / or sequence ID may be independently set / applied.

[0163] For example, in low-height areas, cells may have different physical cell identifiers (e.g., PCID) and / or different scrambling IDs and / or sequence IDs may be used across cells. For example, in high-height areas, multiple cells may have the same (separate) physical cell identifiers (e.g., PCID) and / or the same scrambling ID and / or sequence ID may be used across multiple cells.

[0164] Meanwhile, according to one embodiment of the present disclosure, a plurality of cells can operate as a mega cell depending on the height area of ​​the terminal.

[0165] For example, (in the above situation) multiple cells may share the same time and / or frequency domain with each other. For example, (in the above situation) at least a scheduler may be dynamically shared between the multiple cells.

[0166] For example, (in the above situation) a specific control resource set (e.g., CORESET; control resource set) and / or search space may be (identically) shared for a group of cells.

[0167] For example, (in the above situation), a base station-to-terminal signal / channel (e.g., DL signal / channel) may be transmitted equally by a group of cells (or cells within a group of cells) to a terminal, and / or a specific subset (or set, subset, subset) of cells may transmit the information, and the information may be indicated / configured via a base station-to-terminal control information (e.g., DCI) indication, MAC, and / or RRC. For example, the base station-to-terminal signal / channel may include a base station-to-terminal physical control channel (e.g., PDCCH), a base station-to-terminal physical shared channel (e.g., PDSCH), a channel state information reference signal (e.g., CSI-RS), a phase tracking reference signal (e.g., PT-RS; phase tracking reference signal), a positioning reference signal (e.g., PRS; positioning reference signal), etc.

[0168] FIG. 11 illustrates the type of cell serving a device that changes depending on the altitude of the device, according to one embodiment of the present disclosure. The embodiment of FIG. 11 can be combined with various embodiments of the present disclosure.

[0169] Referring to FIG. 11, a first device capable of vertical movement and communication is shown. For example, if the altitude of the first device is a first altitude, and the first altitude is less than a threshold value, the first device can be served by the first cell, which is a general cell.

[0170] Or, for example, if the altitude of the first device is the second altitude, and the second altitude is greater than the threshold value, the first device can be served by the first megacell consisting of the first to third cells.

[0171] This may be to solve a problem related to interference that may occur in performing communication between the device and the base station, because the number of base stations (or cells) that secure LOS from the perspective of the first device increases excessively when the altitude of the first device rises above a certain level. In the present embodiment, the number of cells constituting the mega cell is exemplified as three, but the number of cells constituting the mega cell may be expanded to multiple integers other than three depending on the setting. For example, the number of cells constituting the mega cell may be set differently depending on the section including the altitude of the device (e.g., the section between the ground and the first threshold value, the section between the first threshold value and the second threshold value, the section including the altitude higher than the second threshold value, etc.) depending on the setting.

[0172] At this time, scheduling information or communication-related information may be shared between multiple cells (or base stations) constituting the megacell. For example, sharing of scheduling information or communication-related information may be performed using various methods described in the present disclosure.

[0173] According to one embodiment of the present disclosure, an AAM terminal can receive a base station-to-terminal reference signal (e.g., DL RS) from a single or multiple cells, and can transmit channel state information (e.g., CSI) (in a direction to increase reliability of data reception when reporting information related to channel state information (e.g., CSI)) to a first cell, and / or can transmit channel state information (e.g., CSI) (in a direction to reduce interference when reporting information related to channel state information (e.g., CSI)) to a second cell. For example, the first cell may be a cell serving the AAM terminal, and the second cell may be a different cell from the first cell. Or, for example, the second cell may be a cell serving the AAM terminal, and the first cell may be a different cell from the second cell. For example, the first cell may be a cell associated with the first base station, and the second cell may be a cell associated with the second base station.

[0174] For example, in the above, the channel state information (e.g., CSI) may include a rank indicator (e.g., RI) and / or a precoding matrix indicator (e.g., PMI) and / or a channel quality indicator (e.g., CQI) and / or beam information.

[0175] For example, channel state information (e.g., CSI) for increasing stability of data reception may mean channel state information (e.g., CSI) related to a case where a measurement value related to stability (or the degree of stability) among multiple channel state information (e.g., CSI) is greater than or equal to a threshold value (or a reference signal).

[0176] For example, channel state information (e.g., CSI) in the direction of reducing interference may mean channel state information (e.g., CSI) related to a case where a measurement value related to interference (or the degree of interference) among multiple channel state information (e.g., CSI) is below a threshold value (or a reference signal).

[0177] For example, in this specification, beam information may include information related to a beam. For example, the beam information may include information related to the direction, intensity, beam identifier, or thickness of the corresponding beam. For example, the beam information may include information related to a spatial filter associated with the corresponding beam.

[0178] For example, a terminal may receive a reference signal (e.g., RS) from a single or multiple cells, and information about this may be provided from a specific cell or from each cell.

[0179] For example, a terminal may transmit a channel state information (e.g., CSI) report for a second cell to a first cell, and / or the first cell may provide relevant information to the second cell. In the above case, the channel state information (e.g., CSI) report may include information about which cell the information is for (e.g., a physical cell identifier (e.g., PCID)).

[0180] For example, information related to channel state information (e.g., CSI) that increases the stability of data reception may be considered to maximize spectral efficiency and / or satisfy block error rate (e.g., BLER) requirements. For example, information related to channel state information (e.g., CSI) that increases the stability of data reception may be channel state information (e.g., CSI) that is related to cases where spectral efficiency is maximized (or a reference signal) and / or cases where block error rate (e.g., BLER) requirements are satisfied (or a reference signal).

[0181] For example, information related to channel state information (e.g., CSI) in the direction of reducing interference may be in the form of a single set, a set of information related to non-preferred channel state information (e.g., CSI), and / or a set of information related to preferred channel state information (e.g., CSI). Alternatively, information related to channel state information (e.g., CSI) in the direction of reducing interference may be information related to preferred and / or non-preferred transmission schemes. For example, information reported by a terminal (to a first cell) may be provided by the first cell to a second cell. For example, when a terminal reports information to a first cell, the first cell may provide information related to information received by the terminal to the second cell.

[0182] For example, information related to the channel state information (e.g., CSI) for the interference may be in the form of information related to the interference level being equal to or greater than a certain level and / or beam information. For example, information related to the channel state information (e.g., CSI) for the interference may include channel state information (e.g., CSI) and / or beam information related to the case where the interference level is equal to or greater than a certain level (or, reference signal).

[0183] For example, information related to the channel state information (e.g., CSI) for the interference may be in the form of information related to the interference level being below or equal to a certain level and / or beam information. For example, information related to the channel state information (e.g., CSI) for the interference may include channel state information (e.g., CSI) and / or beam information related to the case where the interference level is below or equal to a certain level (or, reference signal).

[0184] For example, the interference level may include a quantity of reference signal received power (e.g., RSRP; reference signal received power), reference signal received strength (e.g., RSSI; reference signal strength indicator), reference signal received quality (e.g., RSRQ; reference signal received quality), and / or signal-to-interference-plus-noise ratio (e.g., SINR; signal-to-interference-plus-noise ratio).

[0185] For example, the above-mentioned level may be a value set via RRC, indicated via L2 signaling, indicated via L1 signaling, and / or selected by the terminal.

[0186] For example, measurement of channel state information (e.g., CSI), reporting of channel state information (e.g., CSI), and / or generation and / or reporting of information related to channel state information (e.g., CSI) in a direction of reducing the interference may be different or independent depending on traffic type, quality of service (e.g., QoS), height area of ​​the terminal, and / or mobility information of the terminal.

[0187] For example, the generation and / or reporting of information related to channel state information (e.g., CSI) (in the direction of reducing the above interference) may be limited to being performed when the terminal is in a specific height region (e.g., when the height of the terminal is equal to or exceeds a threshold value defined in advance or set by the base station (via RRC, etc.), and / or when the height of the terminal is determined (or determined) to be within a region defined in advance or set by the base station (via RRC, etc.)).

[0188] For example, the configuration, instruction, and / or selection method may be different or independent depending on the traffic type, quality of service (e.g., QoS), height range of the terminal, and / or mobility information of the terminal.

[0189] FIG. 12 illustrates a procedure for a device to generate and report channel state information (e.g., CSI) based on multiple reference signals, according to an embodiment of the present disclosure. The embodiment of FIG. 12 may be combined with various embodiments of the present disclosure.

[0190] Referring to FIG. 12, a first device capable of moving vertically and performing communication, a first base station serving the first device, and a second base station different from the first base station are shown.

[0191] In step S1210, the second base station may transmit a plurality of reference signals, including a first reference signal to a third reference signal, to the first device. For example, the plurality of reference signals may include various reference signals described in the present disclosure. For example, the plurality of reference signals may include reference signals that can be used to measure channel conditions.

[0192] In step S1220, the first device may perform measurements on the plurality of reference signals and generate channel state information (e.g., CSI) according to various methods described in the present disclosure. For example, the channel state information (e.g., CSI) may include channel state information (e.g., CSI) for reducing interference and / or channel state information (e.g., CSI) for increasing stability. For example, if a reference signal having a highest measurement value related to a degree of stability or a measurement value related to a degree of stability that is equal to or greater than a threshold value is a first reference signal, the first device may generate the channel state information (e.g., CSI) based on the first reference signal. For example, if a reference signal having a lowest measurement value related to a degree of interference or a measurement value related to a degree of interference that is equal to or less than a threshold value is a first reference signal and a second reference signal, the first device may generate the channel state information (e.g., CSI) based on the first reference signal and the second reference signal.

[0193] Here, for example, stability and interference may be related to communication performed between the first device and the first base station. For example, the stability may refer to stability related to communication performed between the first device and the first base station when considering the influence of communication performed (or to be performed) by the second base station. For example, the interference may refer to interference that may affect communication performed between the first device and the first base station when considering the influence of communication performed (or to be performed) by the second base station.

[0194] In step S1230, the first device may report the generated channel state information to the first base station, which is a base station of the cell serving the first device. For example, based on the channel state information, the first base station may adjust operations or settings related to communication with the first device, taking into account the influence (stability or interference) of the second base station on communication between the first device and the first base station.

[0195] Although the embodiments of the present disclosure describe operations according to the height of the terminal, the idea of ​​the present disclosure can be extended and applied to operations according to the position of the terminal according to the x-axis coordinate, y-axis coordinate, and / or other coordinate system of the terminal in addition to the height of the terminal.

[0196] In the embodiments of the present disclosure, the description of the height of the terminal is merely an embodiment, and the description of the height may be replaced or extended with descriptions of air pressure, water pressure, relative height from the height of the base station, (vertical) distance from the ground, and / or the shape of the zone.

[0197] In an embodiment of the present disclosure, whether an AAM terminal performs different operations depending on its height may be determined based on the actual height of the terminal, or may be determined in an application layer or a higher layer based on the height of the terminal, and / or may be determined based on the update timing of height information based on information exchanged between the terminal and the base station or based on that timing.

[0198] The various schemes described in the present disclosure may be implemented by configuring a link (e.g., a base station-to-terminal link (e.g., a DL link), a terminal-to-terminal link (e.g., a UL link), or a terminal-to-terminal link (e.g., a SL link; a sidelink link)), a cell, a carrier, a unicast session (group), a cast type, a transmission priority value, a reception priority value, terminal-to-terminal transmission (e.g., SL transmission) with terminal-to-terminal feedback (e.g., SL HARQ-ACK feedback) enabled / disabled, terminal-to-terminal feedback (e.g., SL HARQ-ACK feedback) options, a quality of service (e.g., QoS) parameter, a (residual) packet delay budget (e.g., PDB; packet delay budget), a congestion control level, a (transmission and / or reception) resource pool, mobility-related information of the terminal (e.g., speed, velocity, direction, acceleration, position, height, path, etc.), a transmission or reception operation of terminal-to-terminal communication (e.g., SL communication), a HARQ process, a beam process, a source ID, It may be applied differently for each destination ID and / or transport block (e.g., TB).

[0199] For example, in an embodiment of the present disclosure, a unit of (pre-)configuration may be configured in the form of the above-described different combinations. For example, in an embodiment of the present disclosure, the indication and management of parameters through a terminal-to-terminal physical control channel (e.g., PSCCH) and / or a terminal-to-terminal physical shared channel (e.g., PSSCH) may be performed in units of the above-described different combinations. For example, a different combination may mean a combination of multiple elements among the above-described elements.

[0200] In the embodiments of the present disclosure, (pre)configuration may mean pre-configuration (based on signaling from a server or at the time of product shipment), configuration from a base station, or configuration via PC5-RRC between terminals.

[0201] In embodiments of the present disclosure, the AAM terminal may be (or may represent) a terminal whose position in the vertical direction may vary (or which is capable of vertical movement or which is mounted on an object capable of vertical movement), a terminal that operates (or can operate) in an environment with varying air pressure, a terminal that operates (or can operate) in an environment with varying water pressure, and / or a terminal that operates (or can operate) in a situation where the surrounding environment, such as temperature, is diverse, and the present disclosure may be extended and applied to terminals in various situations and / or environments.

[0202] The various methods described in this disclosure may be applied differently depending on the terminal-to-terminal communication channel (e.g., SL channel). The various methods described in this disclosure may be applied differently depending on the type of information contained in the terminal-to-terminal communication channel (e.g., SL channel).

[0203] The above proposed method can be applied to the device described below. First, the processor (202) of the receiving terminal can set at least one partial bandwidth (e.g., BWP; bandwidth part). Then, the processor (202) of the receiving terminal can control the transceiver (206) of the receiving terminal to receive a physical channel related to terminal-to-terminal communication (e.g., SL communication) and / or a reference signal related to terminal-to-terminal communication (e.g., SL communication) from the transmitting terminal on at least one partial bandwidth (e.g., BWP).

[0204] AAM (advanced air mobility) (or air mobility) is a term that includes UAM (urban air mobility) (or urban air mobility) and RAM (regional air mobility) (or regional air mobility), and has the characteristic of moving through the air and can function as an entity performing wireless communication.

[0205] Here, when the AAM functions as a subject performing wireless communication, the terminal performing the communication function can be referred to as an AAM terminal. For example, as the height (altitude) of the AAM terminal increases, terminal-to-base station transmissions (e.g., UL transmissions) can be received at high power in multiple cells, and base station-to-terminal transmissions (e.g., DL transmissions) of multiple cells can be received at high power at the AAM terminal.

[0206] For example, in situations where scheduling information is not dynamically shared between cells, it may be difficult to avoid resource conflicts between base station-to-terminal communication (e.g., DL communication) and terminal-to-base station communication (e.g., UL communication) by taking into account the altitude of the AAM terminal.

[0207] According to one embodiment of the present disclosure, a terminal can receive reference signals (e.g., RS; reference signals) for channel state information (e.g., CSI; channel state information) from a plurality of cells, and generate and report channel state information (e.g., CSI) in a direction to mitigate interference when generating channel state information (e.g., CSI) for reference signals (e.g., RS) transmitted by a cell other than a serving cell.

[0208] According to one embodiment of the present disclosure, the effective (or applicable) base station-to-terminal (e.g., DL) semi-persistent scheduling (e.g., SPS) / configured terminal-to-base station (e.g., UL) resources may be different depending on the height.

[0209] According to one embodiment of the present disclosure, an AAM terminal may (separately) measure (and / or generate) and report channel state information (e.g., CSI) for increasing reliability and channel state information (e.g., CSI) for reducing interference.

[0210] According to various embodiments described in the present disclosure, the effect of efficiently managing interference between different cells can be achieved even when the height of the AAM terminal is high.

[0211] Additionally, for example, even when the height of the AAM terminal is high, the cell may have the effect of increasing the performance of the desired signal while reducing interference based on appropriate channel state information (e.g., CSI).

[0212] FIG. 13 illustrates a procedure of a method that may be performed by a first device according to an embodiment of the present disclosure. The embodiment of FIG. 13 may be combined with various embodiments of the present disclosure.

[0213] Referring to FIG. 13, in step S1310, the first device may receive a plurality of first reference signals from a second base station different from the first base station serving the first device. In step S1320, the first device may generate first channel state information based on the plurality of first reference signals. For example, the first channel state information may be information on at least one channel state that causes the lowest interference for communication between the first device and the first base station among the plurality of first channel states associated with the plurality of first reference signals. In step S1330, the first device may transmit the first channel state information to the first base station.

[0214] For example, the first channel state information may be transmitted by the first base station to the second base station.

[0215] For example, the first channel state information may include information related to whether the interference level associated with the at least one channel state is below a threshold value.

[0216] For example, the first channel state information may include at least one of information about a rank indicator (RI), information about a precoding matrix indicator (PMI), information about a channel quality indicator (CQI), or beam information.

[0217] For example, additionally, the first device may receive a plurality of second reference signals from the first base station; generate second channel state information based on the plurality of second reference signals; and transmit the second channel state information to the first base station.

[0218] For example, the second channel state information may be information on at least one channel state that ensures the highest stability for communication between the first device and the first base station.

[0219] For example, the highest stability can be achieved based on maximizing spectral efficiency or meeting block error rate (BLER) requirements.

[0220] For example, the first channel state information may include a physical cell identifier (PCID) associated with the second base station.

[0221] For example, based on the altitude of the first device being above a threshold value, the first cell associated with the first base station may be a mega cell including multiple cells.

[0222] For example, at least one of the time domain or frequency domain between the plurality of cells may be shared.

[0223] For example, the above multiple inter-cell resource schedulers can be dynamically shared.

[0224] For example, at least one of the CORESET (control resource set) or search space between the plurality of cells may be shared.

[0225] The above-described embodiment can be applied to various devices described below. First, the processor (102) of the first device (100) can control the transceiver (106) to receive a plurality of first reference signals from a second base station (300) different from the first base station (200) serving the first device (100). Then, the processor (102) of the first device (100) can generate first channel state information based on the plurality of first reference signals. For example, the first channel state information can be information on at least one channel state that causes the lowest interference for communication between the first device (100) and the first base station (200) among the plurality of first channel states related to the plurality of first reference signals. And, the processor (102) of the first device (100) can control the transceiver (106) to transmit the first channel state information to the first base station (200).

[0226] According to one embodiment of the present disclosure, a first device may be provided. For example, the first device may include: at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the first device to: receive a plurality of first reference signals from a second base station different from a first base station serving the first device; generate first channel state information based on the plurality of first reference signals, wherein the first channel state information is information on at least one channel state that causes the lowest interference with respect to communication between the first device and the first base station among a plurality of first channel states associated with the plurality of first reference signals; and transmit the first channel state information to the first base station.

[0227] For example, the first channel state information may be transmitted by the first base station to the second base station.

[0228] For example, the first channel state information may include information related to whether the interference level associated with the at least one channel state is below a threshold value.

[0229] For example, the first channel state information may include at least one of information about a rank indicator (RI), information about a precoding matrix indicator (PMI), information about a channel quality indicator (CQI), or beam information.

[0230] For example, additionally, the instructions, based on being executed by the at least one processor, may cause the first device to: receive a plurality of second reference signals from the first base station; generate second channel state information based on the plurality of second reference signals; and transmit the second channel state information to the first base station.

[0231] For example, the second channel state information may be information on at least one channel state that ensures the highest stability for communication between the first device and the first base station.

[0232] For example, the highest stability can be achieved based on maximizing spectral efficiency or meeting block error rate (BLER) requirements.

[0233] For example, the first channel state information may include a physical cell identifier (PCID) associated with the second base station.

[0234] For example, based on the altitude of the first device being above a threshold value, the first cell associated with the first base station may be a mega cell including multiple cells.

[0235] For example, at least one of the time domain or frequency domain between the plurality of cells may be shared.

[0236] For example, the above multiple inter-cell resource schedulers can be dynamically shared.

[0237] For example, at least one of the CORESET (control resource set) or search space between the plurality of cells may be shared.

[0238] According to one embodiment of the present disclosure, a processing device configured to control a first device may be provided. For example, the processing device may include: at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on being executed by the at least one processor, may cause the first device to: receive a plurality of first reference signals from a second base station different from a first base station serving the first device; generate first channel state information based on the plurality of first reference signals, wherein the first channel state information is information on at least one channel state that causes the lowest interference with respect to communication between the first device and the first base station among a plurality of first channel states associated with the plurality of first reference signals; and transmit the first channel state information to the first base station.

[0239] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, may cause a first device to: receive a plurality of first reference signals from a second base station different from a first base station serving the first device; generate first channel state information based on the plurality of first reference signals, wherein the first channel state information is information about at least one channel state that causes the lowest interference with respect to communication between the first device and the first base station among a plurality of first channel states associated with the plurality of first reference signals; and transmit the first channel state information to the first base station.

[0240] FIG. 14 illustrates a procedure of a method that may be performed by a second device according to an embodiment of the present disclosure. The embodiment of FIG. 14 may be combined with various embodiments of the present disclosure.

[0241] Referring to FIG. 14, in step S1410, the second device may receive first channel state information from the first device. For example, the first channel state information is information about at least one channel state that causes the lowest interference for communication between the first device and the second device among a plurality of first channel states associated with a plurality of first reference signals, and the first channel state information is generated based on the plurality of first reference signals, and the plurality of first reference signals are transmitted from a third device to the first device, and the first device may be served by the second device.

[0242] For example, additionally, the second device can transmit the first channel status information to the third device.

[0243] The above-described embodiment can be applied to various devices described below. First, the processor (202) of the second device (200) can control the transceiver (206) to receive first channel state information from the first device (100). For example, the first channel state information is information on at least one channel state that causes the lowest interference for communication between the first device (100) and the second device (200) among a plurality of first channel states associated with a plurality of first reference signals, and the first channel state information is generated based on the plurality of first reference signals, and the plurality of first reference signals are transmitted from the third device (300) to the first device (100), and the first device (100) can be served by the second device (200).

[0244] According to one embodiment of the present disclosure, a second device may be provided. For example, the second device may include: at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the second device to: receive first channel state information from a first device, wherein the first channel state information is information on at least one channel state that causes the lowest interference for communication between the first device and the second device among a plurality of first channel states associated with a plurality of first reference signals, and wherein the first channel state information is generated based on the plurality of first reference signals, and the plurality of first reference signals are transmitted from a third device to the first device, and the first device may be served by the second device.

[0245] For example, additionally, the instructions, based on being executed by the at least one processor, may cause the second device to: transmit the first channel state information to the third device.

[0246] For example, the second device above may be a base station (or, for example, a first base station). For example, the third device above may be a base station (or, for example, a second base station).

[0247] The various embodiments of the present disclosure may be combined with each other.

[0248] Below, a description is given of devices to which various embodiments of the present disclosure can be applied.

[0249] Although not limited thereto, the various descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in this document may be applied to various fields requiring wireless communication / connectivity (e.g., 5G) between devices.

[0250] Hereinafter, more specific examples will be provided with reference to the drawings. In the drawings / descriptions below, the same drawing reference numerals may represent identical or corresponding hardware blocks, software blocks, or functional blocks, unless otherwise described.

[0251] FIG. 15 illustrates a communication system (1) according to one embodiment of the present disclosure. The embodiment of FIG. 15 can be combined with various embodiments of the present disclosure.

[0252] Referring to FIG. 15, a communication system (1) to which various embodiments of the present disclosure are applied includes a wireless device, a base station, and a network. Here, the wireless device refers to a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Things) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone) and / or an Aerial Vehicle (AV) (e.g., an Advanced Air Mobility (AAM)). The XR device may include an Augmented Reality (AR) / Virtual Reality (VR) / Mixed Reality (MR) device, and may be implemented in the form of a Head-Mounted Device (HMD), a Head-Up Display (HUD) equipped in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, etc. The portable device may include a smartphone, a smart pad, a wearable device (e.g., a smart watch, smart glasses), a computer (e.g., a laptop, etc.), etc. The home appliance may include a TV, a refrigerator, a washing machine, etc. The IoT device may include a sensor, a smart meter, etc. For example, a base station and a network may also be implemented as a wireless device, and a specific wireless device (200a) may operate as a base station / network node to other wireless devices.

[0253] Here, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. At this time, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology, and may be implemented with standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification may perform communication based on LTE-M technology. At this time, for example, LTE-M technology may be an example of LPWAN technology, and may be called by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology can be implemented by at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication, and is not limited to the above-described names. For example, ZigBee technology can create personal area networks (PAN) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.

[0254] Wireless devices (100a to 100f) can be connected to a network (300) via a base station (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the 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, a 5G (e.g., NR) network, etc. The wireless devices (100a to 100f) can communicate with each other via the base station (200) / network (300), but can also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to Everything) communication). In addition, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0255] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base stations (200), and base stations (200) / base stations (200). Here, wireless communication / connection can be achieved through various wireless access technologies (e.g., 5G NR) such as uplink / downlink communication (150a), sidelink communication (150b) (or, D2D communication), and communication between base stations (150c) (e.g., relay, IAB (Integrated Access Backhaul). Through wireless communication / connection (150a, 150b, 150c), wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals to each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, at least some of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and resource allocation processes can be performed based on various proposals of the present disclosure.

[0256] FIG. 16 illustrates a wireless device according to an embodiment of the present disclosure. The embodiment of FIG. 16 may be combined with various embodiments of the present disclosure.

[0257] Referring to FIG. 16, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals via various wireless access technologies (e.g., LTE, NR). Here, {the first wireless device (100), the second wireless device (200)} can correspond to {the wireless device (100x), the base station (200)} and / or {the wireless device (100x), the wireless device (100x)} of FIG. 15.

[0258] For example, the description of the first wireless device (or device) and the second wireless device (or device) below may be extended to the third wireless device (300) (or device) or a wireless device (or device) corresponding to a subsequent reference number. For example, the reference number of the processor of the third wireless device (300) may be 302, and the reference number of the transceiver may be 306.

[0259] A first wireless device (100) includes one or more processors (102) and one or more memories (104), and may further include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memories (104) and / or the transceivers (106), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (102) may process information in the memory (104) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (106). Furthermore, the processor (102) may receive a wireless signal including second information / signal via the transceiver (106), and then store information obtained from signal processing of the second information / signal in the memory (104). The memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals via one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit. In the present disclosure, a wireless device may also mean a communication modem / circuit / chip.

[0260] A second wireless device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memories (204) and / or the transceivers (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). In addition, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of the fourth information / signals in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In the present disclosure, a wireless device may also mean a communication modem / circuit / chip.

[0261] Hereinafter, the hardware elements of the wireless device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 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 operation flowcharts disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed herein, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed herein.

[0262] One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. One or more processors (102, 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, 202). The descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software configured to perform one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202). The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0263] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0264] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of this document, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of this document, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed herein, via one or more antennas (108, 208). In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0265] FIG. 17 illustrates a signal processing circuit for a transmission signal according to an embodiment of the present disclosure. The embodiment of FIG. 17 can be combined with various embodiments of the present disclosure.

[0266] Referring to FIG. 17, 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). Although not limited thereto, the operations / functions of FIG. 17 may be performed in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 16. The hardware elements of FIG. 17 may be implemented in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 16. For example, blocks 1010 to 1060 may be implemented in the processor (102, 202) of FIG. 16. Additionally, blocks 1010 to 1050 may be implemented in the processor (102, 202) of FIG. 16, and block 1060 may be implemented in the transceiver (106, 206) of FIG. 16.

[0267] The codeword can be converted into a wireless signal through the signal processing circuit (1000) of FIG. 17. Here, the codeword is an encoded bit sequence of an information block. The information block can include a transport block (e.g., an UL-SCH transport block, a DL-SCH transport block). The wireless signal can be transmitted through various physical channels (e.g., a PUSCH or a PDSCH).

[0268] Specifically, the codeword can be converted into a bit sequence scrambled by a scrambler (1010). The scramble sequence used for scrambling is generated based on an initialization value, and the initialization value may include ID information of the wireless device, etc. The scrambled bit sequence can be modulated into a modulation symbol sequence by a modulator (1020). The modulation method may include pi / 2-BPSK (pi / 2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), m-QAM (m-Quadrature Amplitude Modulation), etc. The complex modulation symbol sequence can be mapped to one or more transmission layers by a layer mapper (1030). The modulation symbols of each transmission layer can be mapped to the corresponding antenna port(s) by a precoder (1040) (precoding). The output z of the precoder (1040) can be obtained by multiplying the output y of the layer mapper (1030) by a precoding matrix W of N*M. Here, N is the number of antenna ports, and M is the number of transmission layers. Here, the precoder (1040) can perform precoding after performing transform precoding (e.g., DFT transform) on complex modulation symbols. In addition, the precoder (1040) can perform precoding without performing transform precoding.

[0269] The resource mapper (1050) can map modulation symbols of each antenna port to time-frequency resources. The time-frequency resources can include multiple symbols (e.g., CP-OFDMA symbols, DFT-s-OFDMA symbols) in the time domain and multiple subcarriers in the frequency domain. The signal generator (1060) generates a wireless signal from the mapped modulation symbols, and the generated wireless signal can be transmitted to another device through each antenna. To this end, the signal generator (1060) can include an Inverse Fast Fourier Transform (IFFT) module, a Cyclic Prefix (CP) inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0270] The signal processing process for receiving signals in a wireless device can be configured in reverse order of the signal processing process (1010 to 1060) of FIG. 17. For example, a wireless device (e.g., 100, 200 of FIG. 16) can receive wireless signals from the outside through an antenna port / transceiver. The received wireless signals can be converted into baseband signals through a signal restorer. For this purpose, the signal restorer can include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module. Thereafter, the baseband signal can be restored to a codeword through a resource demapper process, a postcoding process, a demodulation process, and a descrambling process. The codewords can be restored to the original information blocks through decoding. Accordingly, a signal processing circuit (not shown) for a received signal may include a signal restorer, a resource de-mapper, a postcoder, a demodulator, a de-scrambler, and a decoder.

[0271] Figure 18 illustrates a wireless device according to an embodiment of the present disclosure. The wireless device may be implemented in various forms depending on the use case / service (see Figure 15). The embodiment of Figure 18 may be combined with various embodiments of the present disclosure.

[0272] Referring to FIG. 18, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 16 and may be composed of various elements, components, units / units, and / or modules. For example, the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and an additional element (140). The communication unit may include a communication circuit (112) and a transceiver(s) (114). For example, the communication circuit (112) may include one or more processors (102, 202) and / or one or more memories (104, 204) of FIG. 16. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 16. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (140) and controls the overall operation of the wireless device. For example, the control unit (120) may control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit (130). In addition, the control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless / wired interface in the memory unit (130).

[0273] The additional element (140) may be configured in various ways depending on the type of the wireless device. For example, the additional element (140) may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit. Although not limited thereto, the wireless device may be implemented in the form of a robot (Fig. 15, 100a), a vehicle (Fig. 15, 100b-1, 100b-2), an XR device (Fig. 15, 100c), a portable device (Fig. 15, 100d), a home appliance (Fig. 15, 100e), an IoT device (Fig. 15, 100f), a digital broadcasting terminal, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or a financial device), a security device, a climate / environmental device, an AI server / device (Fig. 15, 400), a base station (Fig. 15, 200), a network node, etc. Wireless devices may be mobile or stationary depending on the use / service.

[0274] In FIG. 18, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be interconnected entirely via a wired interface, or at least some may be wirelessly connected via a communication unit (110). For example, within the wireless device (100, 200), the control unit (120) and the communication unit (110) may be wired, and the control unit (120) and the first unit (e.g., 130, 140) may be wirelessly connected via the communication unit (110). In addition, each element, component, unit / part, and / or module within the wireless device (100, 200) may further include one or more elements. For example, the control unit (120) may be composed of one or more processor sets. For example, the control unit (120) may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing processor, a memory control processor, etc. As another example, the memory unit (130) may be composed of 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.

[0275] Below, the implementation example of Fig. 18 is described in more detail with reference to the drawings.

[0276] FIG. 19 illustrates a mobile device according to an embodiment of the present disclosure. The mobile device may include a smartphone, a smart pad, a wearable device (e.g., a smartwatch, smartglasses), or a portable computer (e.g., a laptop, etc.). The mobile device may be referred to as a Mobile Station (MS), a User Terminal (UT), a Mobile Subscriber Station (MSS), a Subscriber Station (SS), an Advanced Mobile Station (AMS), or a Wireless Terminal (WT). The embodiment of FIG. 19 may be combined with various embodiments of the present disclosure.

[0277] Referring to FIG. 19, the portable device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a memory unit (130), a power supply unit (140a), an interface unit (140b), and an input / output unit (140c). The antenna unit (108) may be configured as a part of the communication unit (110). Blocks 110 to 130 / 140a to 140c correspond to blocks 110 to 130 / 140 of FIG. 18, respectively.

[0278] The communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with other wireless devices and base stations. The control unit (120) can control components of the mobile device (100) to perform various operations. The control unit (120) can include an AP (Application Processor). The memory unit (130) can store data / parameters / programs / codes / commands required for operating the mobile device (100). In addition, the memory unit (130) can store input / output data / information, etc. The power supply unit (140a) supplies power to the mobile device (100) and can include a wired / wireless charging circuit, a battery, etc. The interface unit (140b) can support connection between the mobile device (100) and other external devices. The interface unit (140b) can include various ports (e.g., audio input / output ports, video input / output ports) for connection with external devices. The input / output unit (140c) can input or output video information / signals, audio information / signals, data, and / or information input from a user. The input / output unit (140c) may include a camera, a microphone, a user input unit, a display unit (140d), a speaker, and / or a haptic module.

[0279] For example, in the case of data communication, the input / output unit (140c) obtains information / signals (e.g., touch, text, voice, image, video) input by the user, and the obtained information / signals can be stored in the memory unit (130). The communication unit (110) converts the information / signals stored in the memory into wireless signals, and can directly transmit the converted wireless signals to other wireless devices or to a base station. In addition, the communication unit (110) can receive wireless signals from other wireless devices or base stations, and then restore the received wireless signals to the original information / signals. The restored information / signals can be stored in the memory unit (130) and then output in various forms (e.g., text, voice, image, video, haptic) through the input / output unit (140c).

[0280] FIG. 20 illustrates a vehicle or autonomous vehicle according to one embodiment of the present disclosure. The vehicle or autonomous vehicle may be implemented as a mobile robot, a car, a train, a manned or unmanned aerial vehicle (AV), a ship, or the like. The embodiment of FIG. 20 may be combined with various embodiments of the present disclosure.

[0281] Referring to FIG. 20, a vehicle or autonomous vehicle (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a driving unit (140a), a power supply unit (140b), a sensor unit (140c), and an autonomous driving unit (140d). The antenna unit (108) may be configured as a part of the communication unit (110). Blocks 110 / 130 / 140a to 140d correspond to blocks 110 / 130 / 140 of FIG. 18, respectively.

[0282] The communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with external devices such as other vehicles, base stations (e.g., base stations, road side units, etc.), and servers. The control unit (120) can control elements of the vehicle or autonomous vehicle (100) to perform various operations. The control unit (120) can include an ECU (Electronic Control Unit). The drive unit (140a) can drive the vehicle or autonomous vehicle (100) on the ground. The drive unit (140a) can include an engine, a motor, a power train, wheels, brakes, a steering device, etc. The power supply unit (140b) supplies power to the vehicle or autonomous vehicle (100) and can include a wired / wireless charging circuit, a battery, etc. The sensor unit (140c) can obtain vehicle status, surrounding environment information, user information, etc. The sensor unit (140c) may include an IMU (inertial measurement unit) sensor, a collision sensor, a wheel sensor, a speed sensor, an incline sensor, a weight detection sensor, a heading sensor, a position module, a vehicle forward / backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, an illuminance sensor, a pedal position sensor, etc. The autonomous driving unit (140d) may implement a technology for maintaining a driving lane, a technology for automatically controlling speed such as adaptive cruise control, a technology for automatically driving along a set path, a technology for automatically setting a path and driving when a destination is set, etc.

[0283] For example, the communication unit (110) can receive map data, traffic information data, etc. from an external server. The autonomous driving unit (140d) can generate an autonomous driving route and driving plan based on the acquired data. The control unit (120) can control the drive unit (140a) so that the vehicle or autonomous vehicle (100) moves along the autonomous driving route according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit (110) can irregularly / periodically acquire the latest traffic information data from an external server and can acquire surrounding traffic information data from surrounding vehicles. In addition, during autonomous driving, the sensor unit (140c) can acquire vehicle status and surrounding environment information. The autonomous driving unit (140d) can update the autonomous driving route and driving plan based on newly acquired data / information. The communication unit (110) can transmit information regarding the vehicle location, autonomous driving route, driving plan, etc. to the external server. External servers can predict traffic information data in advance using AI technology or other technologies based on information collected from vehicles or autonomous vehicles, and provide the predicted traffic information data to the vehicles or autonomous vehicles.

[0284] The claims set forth in this specification may be combined in various ways. For example, the technical features of the method claims of this specification may be combined and implemented as a device, and the technical features of the device claims of this specification may be combined and implemented as a method. Furthermore, the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a device, and the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a method.

Claims

1. In terms of method, A step of receiving a plurality of first reference signals from a second base station different from a first base station serving a first device; Generating first channel state information based on the above plurality of first reference signals, The step of: wherein the first channel state information is information on at least one channel state that causes the lowest interference for communication between the first device and the first base station among a plurality of first channel states related to the plurality of first reference signals; and A method comprising the step of transmitting the first channel state information to the first base station.

2. In paragraph 1, A method wherein the first channel state information is transmitted by the first base station to the second base station.

3. In paragraph 1, A method wherein the first channel state information includes information related to whether the interference level associated with at least one channel state is below a threshold value.

4. In paragraph 1, A method wherein the first channel state information includes at least one of information about a rank indicator (RI), information about a precoding matrix indicator (PMI), information about a channel quality indicator (CQI), or beam information.

5. In paragraph 1, A step of receiving a plurality of second reference signals from the first base station; A step of generating second channel state information based on the plurality of second reference signals; and A method further comprising the step of transmitting the second channel state information to the first base station.

6. In paragraph 5, A method wherein the second channel state information is information on at least one channel state that ensures the highest stability for communication between the first device and the first base station.

7. In paragraph 6, A method in which the highest stability is achieved based on maximizing spectral efficiency or meeting the block error rate (BLER) requirement.

8. In paragraph 1, A method wherein the first channel state information includes a physical cell identifier (PCID) associated with the second base station.

9. In paragraph 1, A method wherein the first cell associated with the first base station is a mega cell including a plurality of cells, based on the altitude of the first device being equal to or greater than a threshold value.

10. In paragraph 9, A method wherein at least one of the time domain or frequency domain between the plurality of cells is shared.

11. In paragraph 9, A method in which the above multiple inter-cell resource schedulers are dynamically shared.

12. In paragraph 9, A method wherein at least one of a CORESET (control resource set) or a search space is shared between the plurality of cells.

13. In paragraph 1, A method, wherein the above method is performed by a first device.

14. In the first device, At least one transceiver; at least one processor; and At least one memory coupled to said at least one processor and storing instructions, The above instructions, based on being executed by the at least one processor, cause the first device to: Receive a plurality of first reference signals from a second base station different from the first base station serving the first device; Generate first channel state information based on the above plurality of first reference signals, The first channel state information is information on at least one channel state that causes the lowest interference for communication between the first device and the first base station among a plurality of first channel states related to the plurality of first reference signals; and A first device that transmits the first channel state information to the first base station.

15. In a processing device set to control the first device, at least one processor; and At least one memory coupled to said at least one processor and storing instructions, The above instructions, based on being executed by the at least one processor, cause the first device to: Receive a plurality of first reference signals from a second base station different from the first base station serving the first device; Generate first channel state information based on the above plurality of first reference signals, The first channel state information is information on at least one channel state that causes the lowest interference for communication between the first device and the first base station among a plurality of first channel states related to the plurality of first reference signals; and A processing device that transmits the first channel state information to the first base station.

16. A non-transitory computer-readable storage medium that records commands, The above commands, when executed, cause the first device to: Receive a plurality of first reference signals from a second base station different from the first base station serving the first device; Generate first channel state information based on the above plurality of first reference signals, The first channel state information is information on at least one channel state that causes the lowest interference for communication between the first device and the first base station among a plurality of first channel states related to the plurality of first reference signals; and A non-transitory computer-readable storage medium that causes the first channel state information to be transmitted to the first base station.

17. In the method, A method comprising: receiving first channel status information from a first device; The above first channel state information is information on at least one channel state that causes the lowest interference for communication between the first device and the second device among a plurality of first channel states related to a plurality of first reference signals, The above first channel state information is generated based on the plurality of first reference signals, The above plurality of first reference signals are transmitted from the third device to the first device, and A method wherein the first device is served by the second device.

18. In paragraph 17, A method further comprising the step of transmitting the first channel state information to the third device.

19. In the second device, At least one transceiver; at least one processor; and At least one memory coupled to said at least one processor and storing instructions, The above instructions, based on being executed by the at least one processor, cause the second device to: To receive first channel status information from the first device, The first channel state information is information on at least one channel state that causes the lowest interference for communication between the first device and the second device among a plurality of first channel states related to a plurality of first reference signals. The above first channel state information is generated based on the plurality of first reference signals, The above plurality of first reference signals are transmitted from the third device to the first device, and A second device, wherein the first device is served by the second device.

20. In paragraph 19, The above instructions, based on being executed by the at least one processor, cause the second device to: A method for transmitting the first channel status information to the third device.

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