Method and apparatus for setting id of UAV

Abstract

A method whereby a first device communicates wirelessly and a device supporting same are provided. The method may comprise: a step of obtaining setting information related to a plurality of altitude levels; a step of determining the altitude of the first device; and a step of generating an identifier (ID) related to a first altitude level on the basis of the altitude of the first device being within the first altitude level among the plurality of altitude levels.

Description

Method and device for setting the ID of a UAV

[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, to mid-frequency bands between 1 GHz and 10 GHz, and to 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] Per device peak data rate1 TbpsE2E latency1 msMaximum spectral efficiency100bps / HzMobility supportUp to 1000km / hrSatellite integrationFullyAIFullyAutonomous vehicleFullyXRFullyHaptic CommunicationFully

[0005] In one embodiment, a method for a first device to perform wireless communication is provided. The method may include: obtaining configuration information related to a plurality of altitude levels; determining an altitude of the first device; and generating an identifier (ID) related to the first altitude level based on whether the altitude of the first device is within a first altitude level among the plurality of altitude levels.

[0006] In one embodiment, a first device configured to perform wireless communication is provided. 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, when executed by the at least one processor, may cause the first device to: obtain configuration information related to a plurality of altitude levels; determine an altitude of the first device; and generate an identifier (ID) related to the first altitude level based on whether the altitude of the first device is within a first altitude level among the plurality of altitude levels.

[0007] In one embodiment, a processing device configured to control a first device is provided. The processing device comprises at least one processor; and at least one memory coupled to the at least one processor and storing instructions, wherein the instructions, when executed by the at least one processor, cause the first device to: obtain configuration information associated with a plurality of altitude levels; determine an altitude of the first device; and generate an identifier associated with the first altitude level based on the altitude of the first device being within a first altitude level of the plurality of altitude levels.

[0008] In one embodiment, a non-transitory computer-readable storage medium having recorded thereon commands is provided. The commands, when executed, cause a first device to: obtain configuration information associated with a plurality of altitude levels; determine an altitude of the first device; and generate an identifier associated with the first altitude level based on whether the altitude of the first device is within a first altitude level of the plurality of altitude levels.

[0009] FIG. 1 illustrates a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure.

[0010] FIG. 2 illustrates an electromagnetic spectrum according to one embodiment of the present disclosure.

[0011] 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.

[0012] 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.

[0013] FIG. 5 illustrates an example of a sensing operation according to one embodiment of the present disclosure.

[0014] FIG. 6 illustrates a slot structure of a frame according to one embodiment of the present disclosure.

[0015] FIG. 7 illustrates an example of a BWP according to one embodiment of the present disclosure.

[0016] 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.

[0017] FIG. 9 illustrates an ID format related to identification information of a UAV UE according to one embodiment of the present disclosure.

[0018] FIG. 10 illustrates an ID setting / generation operation based on the altitude of a UAV UE according to one embodiment of the present disclosure.

[0019] FIG. 11 illustrates an ID setting / generation operation based on the altitude of a UAV UE according to one embodiment of the present disclosure.

[0020] FIG. 12 illustrates a method for a first device to perform wireless communication according to one embodiment of the present disclosure.

[0021] FIG. 13 illustrates a method for a second device to perform wireless communication according to one embodiment of the present disclosure.

[0022] Fig. 14 illustrates a communication system (1) according to one embodiment of the present disclosure.

[0023] FIG. 15 illustrates a wireless device according to an embodiment of the present disclosure.

[0024] FIG. 16 illustrates a signal processing circuit for a transmission signal according to one embodiment of the present disclosure.

[0025] FIG. 17 illustrates a wireless device according to one embodiment of the present disclosure.

[0026] FIG. 18 illustrates a mobile device according to one embodiment of the present disclosure.

[0027] FIG. 19 illustrates a vehicle or autonomous vehicle according to one embodiment of the present disclosure.

[0028] 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."

[0029] 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."

[0030] 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".

[0031] 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.”

[0032] 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."

[0033] In the following explanation, ‘when, if, in case of’ can be replaced with ‘based on’.

[0034] Technical features individually described in a single drawing in this specification may be implemented individually or simultaneously.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] New network characteristics in 6G may include:

[0041] - Satellite integrated network

[0042] - 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).

[0043] - Seamless integration of wireless information and energy transfer

[0044] - 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.

[0045] Some general requirements for the new network characteristics of 6G, such as the above, may be as follows:

[0046] - small cell networks

[0047] - Ultra-dense heterogeneous network

[0048] - High-capacity backhaul

[0049] - 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.

[0050] - Softwarization and virtualization

[0051] Below, the core implementation technologies of the 6G system are described.

[0052] - 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.

[0053] - 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.

[0054] - Large-scale MIMO technology

[0055] - Hologram beamforming (HBF)

[0056] - Optical wireless technology

[0057] - Free-space optical transmission backhaul network (FSO backhaul network)

[0058] - Quantum communication

[0059] - Cell-free communication

[0060] - Integration of wireless information and power transmission

[0061] - Integration of wireless communication and sensing

[0062] - Integrated access and backhaul network

[0063] - Big data analysis

[0064] - Reconfigurable intelligent surface

[0065] - metaverse

[0066] - Blockchain

[0067] 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.

[0068] - 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 within urban areas.

[0069] - 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.

[0070] - 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.

[0071] - 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).

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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).

[0077] 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.

[0078] 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.

[0079] 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.

[0080] Establishing an 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.

[0081] 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.

[0082] 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.

[0083] 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).

[0084] 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).

[0085] 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).

[0086] 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.

[0087] 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

[0088] 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.

[0089] Referring to FIG. 6, a slot includes a plurality of symbols in the time domain. A carrier includes a plurality of subcarriers in the frequency domain. An RB (Resource Block) may be defined as a plurality (e.g., 12) of consecutive subcarriers in the frequency domain. A BWP (Bandwidth Part) may be defined as a plurality of consecutive (P)RBs ((Physical) Resource Blocks) in the frequency domain, and may correspond to one numerology (e.g., SCS, CP length, etc.). A carrier may include up to N (e.g., 5) BWPs. Data communication may be performed through activated BWPs. Each element may be referred to as a Resource Element (RE) in the resource grid, and one complex symbol may be mapped to it.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] BWP is point A, offset from point A (N start BWP ) 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.

[0094] 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.

[0095] 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).

[0096] 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.

[0097] In this specification, PSCCH may be replaced by a control channel, a physical control channel, a sidelink-related control channel, a sidelink-related physical control channel, etc. In this specification, PSSCH may be replaced by a shared channel, a physical shared channel, a sidelink-related shared channel, a sidelink-related physical shared channel, etc.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] Meanwhile, in the conventional technology (e.g., NR Uu), if the UE monitors the radio link and determines that the radio link is not suitable for communication, it can declare a radio link failure (RLF). That is, for example, the UE can declare a radio link failure (RLF) under the following conditions:

[0107] - When an out-of-sync indication (e.g., N310) is received consecutively N times from the PHY (physical) layer, and an in-sync indication (e.g., N311) is not received for a certain period of time (e.g., T310).

[0108] - If the RACH procedure fails N times

[0109] - When retransmissions exceed the maximum number in the RLC (radio link control) layer.

[0110] Meanwhile, when a terminal performs wireless communication with a counterpart terminal located at a different altitude from its own (e.g., an altitude outside the range that can be considered similar to its own altitude), the following problems may occur. For example, the greater the difference in altitude between the terminals performing wireless communication, the greater the likelihood that the signal will be blocked by obstacles, which may increase the probability of interference and data loss. Alternatively, for example, the greater the difference in altitude between the terminals performing wireless communication, the greater the distance the signal must be transmitted, which may increase the power consumption of the transmitting terminal. Alternatively, for example, the greater the difference in altitude between the terminals, the greater the probability of being affected by environmental variables (e.g., weather conditions or atmospheric conditions), which may reduce the stability of data transmission. In particular, the signal processing capabilities and available power of mobile devices such as UAVs may be limited compared to other types of devices, making the above-described problems even more critical. Therefore, for example, a procedure may be required to first determine whether the terminal and counterpart terminal are within an altitude that guarantees LOS before performing wireless communication.

[0111] In the present disclosure, a method for performing communication according to an altitude level of an unmanned aerial vehicle (UAV) UE and a device supporting the same are proposed.

[0112] For example, a UAV UE may have different communication environments with a base station depending on its altitude (or height). For example, as the altitude increases, the line of sight (LOS) between the UAV UE and the base station is guaranteed compared to a low altitude, allowing for more signal transmission and reception (e.g., because there may be fewer obstacles compared to a low altitude). In addition, for example, it may be difficult to guarantee a LOS environment at a low altitude compared to a high altitude (e.g., because there may be more obstacles compared to a high altitude). Therefore, for example, the communication environment (e.g., channel conditions) between the UAV UE and the base station at a low altitude may be worse than at a high altitude. Alternatively, for example, the communication environment (e.g., channel conditions) between the UAV UE and the base station at a high altitude may be better than at a low altitude.

[0113] Additionally, for example, when a UAV UE performs sidelink communication between UAV UEs, the sidelink communication (e.g., transmitting and receiving operations) may be performed primarily between UAV UEs located at similar altitudes. That is, for example, sidelink communication may not be performed frequently between UAV UEs located at different altitude levels.

[0114] For example, Table 3 below may represent an embodiment of setting classes or levels by altitude. For example, in Table 3 below, UAV UEs located at altitude level "1" may primarily perform sidelink communication with UAV UEs located at the same altitude level "1." Additionally, for example, UAV UEs located at different altitude levels (e.g., UAV UEs at altitude level "1" and UAV UEs at altitude level "2") may not frequently perform sidelink communication.

[0115] Altitude Altitude level 0~300m Altitude level "1" 300~600m Altitude level "2" 600~1500m Altitude level "3" 1500~3000m Altitude level "4"

[0116] Therefore, for example, the PHY (physical) layer and / or the MAC layer of a UAV UE may filter (e.g., discard or ignore) data (e.g., user data and / or control data (e.g., sidelink MAC CE and / or PC5 RRC message and / or PC5-S message)) received from a UAV UE located at a different altitude level from the altitude level at which the UAV UE is located and not forward it to a higher layer (e.g., the MAC layer or the RRC layer or the V2X layer). For example, in order to perform such an operation, the UAV UE must be able to distinguish that data or transport blocks (TBs) received from another UAV UE are data or transport blocks (TBs) transmitted from a UAV UE located at a different altitude level. Accordingly, in the present disclosure, different source layer-2 IDs and / or destination layer-2 IDs (e.g., altitude-specific service IDs: IDs for services supported at specific altitudes) of UAV UEs may be generated or set according to each altitude level. For example, a higher layer of the UAV UE (e.g., a V2X layer or a UAV layer or a PC5 layer) may generate a source layer-2 ID and / or a destination layer-2 ID including an identifier that distinguishes the UAV UE according to its altitude level, and transmit the same to an access stratum (AS) layer of the UAV UE.That is, for example, when the AS layer of a UAV UE receives its source layer-2 ID and / or destination layer-2 ID from an upper layer or receives the source layer-2 ID and / or destination layer-2 ID of an opposing terminal from an opposing terminal, it can distinguish which altitude level the source layer-2 ID and / or destination layer-2 ID matches. That is, for example, when a UAV UE located at altitude level "1" receives data or TB from another UAV UE, it checks the source layer-2 ID and / or destination layer-2 ID included in the received data or TB, and if it identifies that the source layer-2 ID and / or destination layer-2 ID are not for altitude level "1", it may discard the received data and / or TB and / or MAC PDU and not forward it to a higher layer (e.g., PDCP layer or V2X layer or UAV layer or PC5 layer).Alternatively, for example, when a UAV UE located at altitude level "1" receives data or TB from another UAV UE, it may check the source layer-1 ID and / or destination layer-1 ID included in the received data or TB, and if it identifies that the source layer-1 ID and / or destination layer-1 ID is not for altitude level 1, it may discard the received data and / or TB and not forward it to a higher layer (e.g., MAC layer).

[0117] In addition, for example, when the upper layer of the UAV UE (e.g., the V2X layer or the UAV layer or the PC5 layer) generates and transmits to the AS layer the source layer-2 ID (e.g., an identifier for the station ID of the UAV UE) or the destination layer-2 ID (e.g., an altitude-specific service ID: an ID for a service supported at a specific altitude) of the UAV UE, the upper layer may transmit altitude information (e.g., altitude level or altitude information (e.g., 300 m)), location information, and QoS information (e.g., QoS requirement information related to a service) related to the layer-2 ID along with the SDU. For example, when the AS layer of the UAV UE receives altitude information (e.g., altitude level or altitude information (e.g., 300m)), location information, and QoS information (e.g., QoS requirement information related to a service) related to a layer-2 ID (e.g., source layer-2 ID and / or destination layer-2 ID) from an upper layer of the UAV UE along with an SDU related to the layer-2 ID (e.g., source layer-2 ID and / or destination layer-2 ID), the AS layer of the UAV UE can know the altitude information (e.g., altitude level or altitude information (e.g., 300m)) related to the layer-2 ID.

[0118] Alternatively, for example, a higher layer of the UAV UE (e.g., V2X layer or UAV layer or PC5 layer) may generate a layer-2 ID (e.g., source layer-2 ID, destination layer-2 ID) that the AS layer of the UAV UE can understand based on information from a lower higher layer (e.g., application layer).

[0119] For example, the identification information of a UAV UE that can be transmitted from the application layer to the UAV layer (or V2X layer, or PC5 layer) may be as follows.

[0120] - a serial number assigned to the unmanned aircraft

[0121] - Session ID (a session ID)

[0122] - an indication of the latitude and longitude of the control station

[0123] - an indication of the geometric altitude of the control station

[0124] - an indication of the latitude and longitude of the unmanned aircraft

[0125] - an indication of the geometric altitude of the unmanned aircraft

[0126] - an indication of the velocity of the unmanned aircraft

[0127] - a time mark identifying the Coordinated Universal Time (UTC) time of applicability of a position source output

[0128] - an indication of the emergency status of the unmanned aircraft

[0129] For example, a higher layer of a UAV UE (e.g., a V2X layer or a UAV layer or a PC5 layer) can generate a layer-2 ID to distinguish UAV UEs having similar attributes of UAV UE identification information. For example, an identifier that distinguishes UAVs (or unmanned aircraft) located at the same altitude level (e.g., an altitude of about 100 meters, an altitude of about 200 meters, an altitude of about 300 meters, etc.) can be distinguished using some bits (e.g., least significant bit "N" bits or most significant bit "N" bits) of a 24-bit layer-2 ID (e.g., source layer-2 ID, destination layer-2 ID). That is, for example, the AS layer may receive a 24-bit ID from a higher layer of the UAV UE (e.g., the V2X layer or the UAV layer or the PC5 layer) and may check the LSB "N" bits or the MSB "N" bits to derive the altitude information where the UAV UE is located. Or, for example, the ID format may be defined so that each attribute of the UAV UE identification information (e.g., attribute(s) of the UAV UE identification information that can be transmitted from the application layer to the UAV layer) can be included in the ID.For example, a higher layer of a UAV UE (e.g., a V2X layer or a UAV layer or a PC5 layer) can generate an ID so that each attribute of the UAV UE identification information can be included in the ID when generating the ID. For example, when the AS layer receives an L2 ID from a higher layer (e.g., a V2X layer or a UAV layer or a PC5 layer) (or, when it receives L2 ID information of a counterpart UAV UE from a counterpart UAV UE), it can determine the identification attribute of the UAV UE based on the received L2 ID.

[0130] FIG. 9 illustrates an ID format related to identification information of a UAV UE according to an embodiment of the present disclosure. The embodiment of FIG. 9 may be combined with various embodiments of the present disclosure.

[0131] Referring to FIG. 9, the 24 bits of the embodiment illustrated in FIG. 9 are only for convenience of explanation, and the layer-2 ID of the UAV UE may be defined with various sizes of length. In addition, for example, FIG. 9 only illustrates the case where the number of bits allocated to each piece of identification information of the UAV UE is constant as "N" for convenience of explanation, but a different number of bits may be allocated depending on the size of the identification information of the UAV UE, etc. In addition, for example, the identification information of the UAV UE may include identification information of the UAV UE that may be transmitted from the application layer described above to the UAV layer (or V2X layer, or PC5 layer). Or, for example, the identification information of the UAV UE may include UAV UE identification profile information described below.

[0132] Additionally, for example, when the upper layer of the UAV UE (e.g., V2X layer or UAV layer or PC5 layer) transmits the generated layer-2 ID (e.g., source layer-2 ID, destination layer-2 ID) to the AS layer, it may transmit UAV UE identification information (e.g., UAV UE identification profile) together.

[0133] For example, UAV UE identification profile information may be as follows.

[0134] - a serial number assigned to the unmanned aircraft

[0135] - Session ID (a session ID)

[0136] - an indication of the latitude and longitude of the control station

[0137] - an indication of the geometric altitude of the control station

[0138] - an indication of the latitude and longitude of the unmanned aircraft

[0139] - an indication of the geometric altitude of the unmanned aircraft

[0140] - an indication of the velocity of the unmanned aircraft

[0141] - a time mark identifying the Coordinated Universal Time (UTC) time of applicability of a position source output

[0142] - an indication of the emergency status of the unmanned aircraft

[0143] That is, for example, the AS layer of the UAV UE can determine the identification attribute of the UAV UE based on the layer-2 ID of the UAV UE, and perform the above-described operation (e.g., the UE's operation of filtering or ignoring data received from a UAV UE with different attributes). Or, for example, the AS layer of the UAV UE can combine the layer-2 ID of the UAV UE and UAV UE identification profile information related to the layer-2 ID, and determine the identification attribute of the UAV UE, and perform the above-described operation (e.g., the UE's operation of filtering or ignoring data received from a UAV UE with different attributes).

[0144] FIG. 10 illustrates an ID setting / generation operation based on the altitude of a UAV UE according to an embodiment of the present disclosure. The embodiment of FIG. 10 may be combined with various embodiments of the present disclosure.

[0145] Referring to FIG. 10, UE 1, UE 2, and UE 3 may be devices (e.g., UAVs, etc.) that support three-dimensional movement. For example, UE 1 may obtain configuration information related to a plurality of altitude levels (or, the configuration information related to the plurality of altitude levels may be preset in UE 1). For example, the altitude levels included in the configuration information related to the plurality of altitude levels may mean altitude sections. For example, the altitude levels included in the configuration information related to the plurality of altitude levels may be determined based on a plurality of threshold altitudes (e.g., 300 m, 600 m, 1500 m, 3000 m, etc.) above the ground surface (or sea level) (e.g., 0 m). For example, UE 1 may obtain (or may be preset in UE 1) configuration information related to the plurality of altitude levels, which sets the altitude section from 0 m to 300 m as altitude level "1", the altitude section from 300 m to 600 m as altitude level "2", the altitude section from 600 m to 1500 m as altitude level "3", and the altitude section from 1500 m to 3000 m as altitude level "4". Meanwhile, for example, UE 1 may determine the altitude level at which UE 1 itself is located based on the configuration information related to the plurality of altitude levels. That is, for example, UE 1 may determine its own altitude based on its own sensors, etc., and may determine that UE 1 itself is currently located at altitude level "4" (1010) based on the determined altitude of UE 1 itself and the configuration information related to the acquired plurality of altitude levels. In this case, for example, UE 1 may generate an ID (e.g., source layer ID and / or destination layer ID) that includes information related to the altitude level at which it is currently located (e.g., altitude level "4" (1010)).Alternatively, for example, UE 1 may include information related to the altitude level at which it is currently located (e.g., altitude level "4" (1010)) in its source layer ID and / or destination layer ID. For example, an ID including information related to the altitude level at which UE 1 is located may be generated in a higher layer of UE 1 (e.g., a V2X layer, a UAV layer, or a PC5 layer) and forwarded to a lower layer of UE 1 (e.g., an AS layer). For example, the operation of generating an ID including information related to an altitude level determined based on the altitude at which the UE itself is located, as described above, may also be performed in UE 2 and UE 3. That is, for example, since UE 2 is located at altitude level "4" (1010) like UE 1, the information related to the ID for the altitude level generated by UE 2 (or the source layer ID and / or the destination layer ID including the information related to the altitude level) may include identification information that matches the information related to the ID for the altitude level generated by UE 1 (or the source layer ID and / or the destination layer ID including the information related to the altitude level). And, for example, since UE 3 is located at a different altitude level "3" (1020) than UE 1 and UE 2, the information related to the ID for the altitude level generated by UE 3 (or the source layer ID and / or the destination layer ID including the information related to the altitude level) may include identification information that is different from the information related to the ID for the altitude level generated by UE 1 (or the source layer ID and / or the destination layer ID including the information related to the altitude level). Meanwhile, for example, UE 1 can receive control information or data from UE 2 and UE 3 (1011, 1021).That is, for example, UE 1 may receive control information or data from each of UE 2 and UE 3 before determining / judging the altitude levels at which each of UE 2 and UE 3 is located (1011, 1021). For example, UE 1 may obtain an ID related to the altitude level of UE 2 (altitude level "4" (1010)) included in the control information or data received from UE 2. In this case, for example, UE 1 may determine / judge that the altitude level at which UE 1 itself is located and the altitude level at which UE 2 is located are the same, based on the ID related to the altitude level of UE 2 acquired from UE 2. Therefore, for example, UE 1 may not filter the control information or data received from UE 2. In addition, for example, UE 1 may obtain an ID related to the altitude level of UE 3 (altitude level "3" (1020)) included in the control information or data received from UE 3. In this case, for example, UE 1 can determine / judge that the altitude level at which UE 1 itself is located and the altitude level at which UE 3 is located are different based on the ID related to the altitude level of UE 3 acquired from UE 3. Accordingly, for example, UE 1 can filter (e.g., remove or ignore) control information or data received from UE 3.Meanwhile, for example, although not shown in FIG. 10, if the altitude of UE 1 changes from altitude level "4" (1010) to altitude level "3" (1020), UE 1 can re-generate an ID related to its changed altitude level (altitude level "3" (1020)), and if it receives an ID related to the altitude level of UE 3 (altitude level "3" (1020)) from UE 3, it can determine / judge that the altitude level at which UE 1 itself is located and the altitude level at which UE 3 is located are the same, and may not filter control information or data received from UE 3 (i.e., for example, if the altitude level associated with UE 1 changes to altitude level "3" (1020), control information or data received from UE 2, which is at an altitude level different from the altitude level at which UE 1 itself is located, may be filtered).

[0146] FIG. 11 illustrates an ID setting / generation operation based on the altitude of a UAV UE according to an embodiment of the present disclosure. The embodiment of FIG. 11 may be combined with various embodiments of the present disclosure.

[0147] Referring to FIG. 11, UE 1 and UE 2 may be devices (e.g., UAVs, etc.) that support three-dimensional movement. In addition, for example, UE 1 and UE 2 may be devices that have acquired (or preset) configuration information related to multiple altitude levels, as in FIG. 10 described above. In step S1110, UE 1 may determine its own altitude. In step S1120, it may be determined / judged that it is located at a first altitude level based on its own altitude among the multiple altitude levels. And, for example, UE 1 may generate an ID related to the first altitude level at which it is located. Or, for example, UE 1 may generate its source layer ID and / or destination layer ID by including information related to the first altitude level at which UE 1 is located when generating its source layer ID and / or destination layer ID. That is, for example, UE 1 may include information in its source layer ID and / or destination layer ID that enables it to identify the altitude level at which UE 1 is currently located. In step S1130, UE 1 may receive control information or data from UE 2. In this case, for example, the control information or data that UE 1 receives from UE 2 may include information related to the altitude level of UE 2. That is, for example, as described above, UE 2 may also determine / judge that UE 2 itself is located at the second altitude level based on its own altitude, and may generate its own source layer ID and / or destination layer ID including information related to the second altitude level at which UE 2 itself is located. In step S1140, UE 1 can determine / judge whether the ID related to the second altitude level of UE 2 acquired in the above-described step S1130 and the ID related to the first altitude level of UE 1 itself generated in the above-described step S1120 match each other (or whether they are different).For example, if the ID associated with the first altitude level and the ID associated with the second altitude level do not match, UE 1 may determine / judge that it is located at a different altitude level from UE 2. In step S1150, UE 1 may discard or ignore the control information or data received from UE 2 in step S1130 described above based on the determination in step S1140 described above (i.e., the determination that UE 1 and UE 2 are located at different altitude levels).

[0148] The term “channel” as specified in this disclosure may be replaced with “carrier” or “set of resource blocks (RBs) of a specific carrier” or “band”.

[0149] For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or related parameters (e.g., thresholds) may be set specifically (or differently or independently) for SL-Channel Access Priority Class (CAPC). For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or related parameters (e.g., thresholds) may be set specifically (or differently or independently) for SL-LBT types (e.g., Type 1 LBT, Type 2A LBT, Type 2B LTB, Type 2C LBT). For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or related parameters (e.g., thresholds) may be set specifically (or differently or independently) depending on whether FBE (Frame Based LBT) is applied. For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or the relevant parameters (e.g., thresholds) may be set specifically (or differently or independently) depending on whether LBE (Load Based LBT) is applied.

[0150] For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or their associated parameters (e.g., thresholds) can be set resource pool-specifically (or differently or independently). For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or their associated parameters (e.g., thresholds) can be set congestion level-specifically (or differently or independently). For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or their associated parameters (e.g., thresholds) can be set service priority-specifically (or differently or independently). For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or their associated parameters (e.g., thresholds) can be set service type-specifically (or differently or independently). For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or related parameters (e.g., thresholds) can be set specifically (or differently or independently) for QoS requirements (e.g., latency, reliability). For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or related parameters (e.g., thresholds) can be set specifically (or differently or independently) for PQI (5QI (5G QoS identifier) ​​for PC5). For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or related parameters (e.g., thresholds) can be set specifically (or differently or independently) for traffic types (e.g., periodic generation or aperiodic generation). For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or related parameters (e.g., thresholds) can be set specifically (or differently or independently) for SL transmission resource allocation modes (e.g., mode 1 or mode 2).For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or related parameters (e.g., thresholds) may be configured specifically (or differently or independently) for a Tx profile (e.g., a Tx profile indicating that the service supports sidelink DRX operation or a Tx profile indicating that the service does not need to support sidelink DRX operation).

[0151] For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on whether the Uu bandwidth part is activated / deactivated. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on whether the sidelink bandwidth part is activated / deactivated. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on whether the sidelink logical channel / logical channel group (or Uu logical channel or Uu logical channel group) is activated. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on initial transmission resource selection. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for retransmission resource selection. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) depending on whether PUCCH configuration is supported (e.g., when PUCCH resources are configured or when PUCCH resources are not configured). For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for a resource pool (e.g., a resource pool where PSFCH is configured or a resource pool where PSFCH is not configured). For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for a type of service / packet.For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for the priority of the service / packet. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for a QoS profile or QoS requirement (e.g., URLLC / EMBB traffic, reliability, latency). For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for a PQI. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for a PFI. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for a cast type (e.g., unicast, groupcast, broadcast). For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for a (resource pool) congestion level (e.g., CBR). For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for a SL HARQ feedback scheme (e.g., NACK-only feedback, ACK / NACK feedback). For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for HARQ Feedback Enabled MAC PDU transmission. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set specifically (or differently or independently) for HARQ Feedback Disabled MAC PDU transmission.For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on whether a PUCCH-based SL HARQ feedback reporting operation is set. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on whether pre-emption or pre-emption-based resource reselection is performed. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on whether re-evaluation or re-evaluation-based resource reselection is performed. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on (L2 or L1) (source and / or destination) identifiers. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set identifier-specifically (or differently or independently) for (L2 or L1) (a combination of source ID and destination ID). For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set identifier-specifically (or differently or independently) for (L2 or L1) (a combination of a pair of source ID and destination ID and a cast type). For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set direction-specifically (or differently or independently) for a pair of source layer ID and destination layer ID. For example, whether the proposed rule of the present disclosure applies and / or the related parameter setting values ​​can be set PC5 RRC connection / link-specifically (or differently or independently).For example, whether the proposed rule of the present disclosure is applicable and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on whether SL DRX is performed. For example, whether the proposed rule of the present disclosure is applicable and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on whether SL DRX is supported. For example, whether the proposed rule of the present disclosure is applicable and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on the SL mode type (e.g., resource allocation mode 1 or resource allocation mode 2). For example, whether the proposed rule of the present disclosure is applicable and / or the related parameter setting values ​​can be specifically (or differently or independently) set depending on the case of performing (aperiodic) resource reservation. For example, whether the proposed rules of the present disclosure are applicable and / or the related parameter setting values ​​can be set specifically (or differently or independently) for a Tx profile (e.g., a Tx profile indicating that the service supports sidelink DRX operation or a Tx profile indicating that the service does not need to support sidelink DRX operation).

[0152] The applicability of the proposals and proposed rules of the present disclosure (and / or the associated parameter settings) may also be applied to mmWave SL operation.

[0153] According to various embodiments of the present disclosure, a terminal may generate an ID (e.g., a source layer ID and / or a destination layer ID) associated with a corresponding altitude level for each of a plurality of altitude levels. Specifically, when the terminal generates an ID associated with the altitude level to which its own altitude belongs, the terminal compares the ID associated with the altitude level to which the altitude of the counterpart terminal belongs, received from the counterpart terminal, with the ID, and only if the ID associated with its own altitude level and the ID associated with the altitude level of the counterpart terminal contain the same identification information, may wireless communication be maintained with the counterpart terminal, and if the ID associated with its own altitude level and the ID associated with the altitude level of the counterpart terminal do not contain the same identification information (i.e., contain different identification information), wireless communication with the counterpart terminal may be terminated. In this case, for example, since the terminal and the counterpart terminal are located at altitude levels where LOS is guaranteed (i.e., the altitude difference between the terminals is not large), the probability of interference and data loss may be reduced. Alternatively, for example, since the terminal and the counterpart terminal are located at altitude levels where LOS is guaranteed (i.e., the altitude difference between the terminals is not large), the power consumed when a transmitting terminal performs transmission may be efficiently managed. Alternatively, for example, the stability of data transmission between terminals can be improved because the probability that the terminal and the counterpart terminal are affected by environmental variables is reduced.

[0154] FIG. 12 illustrates a method for a first device to perform wireless communication according to an embodiment of the present disclosure. The embodiment of FIG. 12 may be combined with various embodiments of the present disclosure.

[0155] Referring to FIG. 12, in step S1210, the first device can obtain configuration information related to a plurality of altitude levels. In step S1220, the first device can determine the altitude of the first device. In step S1230, the first device can generate an ID (identifier) ​​related to the first altitude level based on the altitude of the first device being within a first altitude level among the plurality of altitude levels.

[0156] For example, the ID associated with the first altitude level may be included in at least one of a source layer ID of the first device or a destination layer ID of the first device.

[0157] For example, the ID associated with the first altitude level may be different from the ID associated with altitude levels other than the first altitude level among the plurality of altitude levels.

[0158] For example, control information or data including an ID associated with an altitude level other than the first altitude level among the plurality of altitude levels may be filtered.

[0159] For example, the ID associated with the first altitude level may be determined based on services available at the first altitude level among the plurality of altitude levels.

[0160] For example, information including an ID associated with the first altitude level can be transmitted from a higher layer of the first device to a lower layer of the first device. For example, information associated with at least one of an altitude of the first device, the first altitude level associated with the altitude of the first device, a location of the first device, or a quality of service (QoS) requirement of a service available at the first altitude level can be transmitted from a higher layer of the first device to a lower layer of the first device together with information including an ID associated with the first altitude level. For example, the upper layer of the first device can be at least one of a vehicle-to-everything (V2X) layer, an unmanned aerial vehicle (UAV) layer, or a PC5 layer. And, for example, the lower layer of the first device can be an access stratum (AS) layer.

[0161] Additionally, for example, the first device may receive control information or data from the second device, including an ID associated with the second altitude level. For example, the control information or data received from the second device may be filtered based on whether the ID associated with the first altitude level is different from the ID associated with the second altitude level. For example, the altitude of the second device may be identified as being outside the first altitude level based on whether the ID associated with the first altitude level is different from the ID associated with the second altitude level.

[0162] For example, information for identifying the first device including an ID associated with the first altitude level may be generated based on at least one bit from among a plurality of bits including bits for a source layer ID of the first device and bits for a destination layer ID of the first device. For example, the at least one bit associated with the information for identifying the first device may be at least one of a least significant bit (LSB) or a most significant bit (MSB) from among the plurality of bits. For example, the information for identifying the first device may be generated based on information transmitted from an application layer of the first device.

[0163] The proposed method can be applied to devices according to various embodiments of the present disclosure. First, the processor (102) of the first device (100) can control the transceiver (106) to obtain configuration information related to a plurality of altitude levels. Then, the processor (102) of the first device (100) can determine the altitude of the first device. Then, the processor (102) of the first device (100) can generate an ID (identifier) ​​related to the first altitude level based on the altitude of the first device being within the first altitude level among the plurality of altitude levels.

[0164] According to one embodiment of the present disclosure, a first device configured to perform wireless communication may be provided. For example, the first device may include at least one transceiver; at least one processor; and at least one memory 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: obtain configuration information related to a plurality of altitude levels; determine an altitude of the first device; and generate an identifier (ID) associated with the first altitude level based on whether the altitude of the first device is within a first altitude level among the plurality of altitude levels.

[0165] 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 execution by the at least one processor, may cause the first device to: obtain configuration information related to a plurality of altitude levels; determine an altitude of the first device; and generate an identifier (ID) associated with the first altitude level based on whether the altitude of the first device is within a first altitude level among the plurality of altitude levels.

[0166] 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: obtain configuration information related to a plurality of altitude levels; determine an altitude of the first device; and generate an identifier (ID) associated with the first altitude level based on whether the altitude of the first device is within a first altitude level among the plurality of altitude levels.

[0167] FIG. 13 illustrates a method for a second device to perform wireless communication according to an embodiment of the present disclosure. The embodiment of FIG. 13 may be combined with various embodiments of the present disclosure.

[0168] Referring to FIG. 13, in step S1310, the second device can obtain configuration information related to a plurality of altitude levels. In step S1320, the second device can determine the altitude of the second device. In step S1330, the second device can receive control information or data including an ID (identifier) ​​related to a first altitude level among the plurality of altitude levels from the first device. For example, the control information or the data can be filtered based on whether the ID related to the second altitude level including the altitude of the second device is different from the ID related to the first altitude level.

[0169] The proposed method can be applied to devices according to various embodiments of the present disclosure. First, the processor (202) of the second device (200) can control the transceiver (206) to obtain configuration information related to a plurality of altitude levels. Then, the processor (202) of the second device (200) can determine the altitude of the second device. Then, the processor (202) of the second device (200) can control the transceiver (206) to receive control information or data including an identifier (ID) related to a first altitude level among the plurality of altitude levels from the first device. For example, the control information or the data can be filtered based on whether the ID related to the second altitude level including the altitude of the second device is different from the ID related to the first altitude level.

[0170] According to one embodiment of the present disclosure, a second device configured to perform wireless communication may be provided. For example, the second device may include at least one transceiver; at least one processor; and at least one memory 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 second device to: obtain configuration information related to a plurality of altitude levels; determine an altitude of the second device; and receive control information or data including an identifier (ID) associated with a first altitude level among the plurality of altitude levels from a first device. For example, the control information or the data may be filtered based on a difference between an ID associated with the second altitude level, which includes the altitude of the second device, and an ID associated with the first altitude level.

[0171] According to one embodiment of the present disclosure, a processing device configured to control a second 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 execution by the at least one processor, may cause the second device to: obtain configuration information related to a plurality of altitude levels; determine an altitude of the second device; and receive control information or data including an identifier (ID) associated with a first altitude level among the plurality of altitude levels from the first device. For example, the control information or the data may be filtered based on a difference between an ID associated with a second altitude level including the altitude of the second device and an ID associated with the first altitude level.

[0172] 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 second device to: obtain configuration information related to a plurality of altitude levels; determine an altitude of the second device; and receive control information or data including an identifier (ID) associated with a first altitude level among the plurality of altitude levels from the first device. For example, the control information or the data may be filtered based on a difference between an ID associated with the second altitude level, which includes the altitude of the second device, and an ID associated with the first altitude level.

[0173] The various embodiments of the present disclosure may be combined with each other.

[0174] Below, a description is given of devices to which various embodiments of the present disclosure can be applied.

[0175] 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.

[0176] 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.

[0177] FIG. 14 illustrates a communication system (1) according to one embodiment of the present disclosure. The embodiment of FIG. 14 can be combined with various embodiments of the present disclosure.

[0178] Referring to FIG. 14, 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.

[0179] 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.

[0180] 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).

[0181] 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.

[0182] FIG. 15 illustrates a wireless device according to an embodiment of the present disclosure. The embodiment of FIG. 15 may be combined with various embodiments of the present disclosure.

[0183] Referring to FIG. 15, 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. 14.

[0184] 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.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] FIG. 16 illustrates a signal processing circuit for a transmission signal according to an embodiment of the present disclosure. The embodiment of FIG. 16 can be combined with various embodiments of the present disclosure.

[0191] Referring to FIG. 16, the signal processing circuit (1000) may include a scrambler (1010), a modulator (1020), a layer mapper (1030), a precoder (1040), a resource mapper (1050), and a signal generator (1060). Although not limited thereto, the operations / functions of FIG. 16 may be performed in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 15. The hardware elements of FIG. 16 may be implemented in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 15. For example, blocks 1010 to 1060 may be implemented in the processor (102, 202) of FIG. 15. Additionally, blocks 1010 to 1050 may be implemented in the processor (102, 202) of FIG. 15, and block 1060 may be implemented in the transceiver (106, 206) of FIG. 15.

[0192] The codeword can be converted into a wireless signal through the signal processing circuit (1000) of FIG. 16. 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).

[0193] 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.

[0194] 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.

[0195] 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. 16. For example, a wireless device (e.g., 100, 200 of FIG. 15) 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.

[0196] Figure 17 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 14). The embodiment of Figure 17 may be combined with various embodiments of the present disclosure.

[0197] Referring to FIG. 17, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 15 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 additional elements (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. 15. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 15. 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).

[0198] 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. 14, 100a), a vehicle (Fig. 14, 100b-1, 100b-2), an XR device (Fig. 14, 100c), a portable device (Fig. 14, 100d), a home appliance (Fig. 14, 100e), an IoT device (Fig. 14, 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. 14, 400), a base station (Fig. 14, 200), a network node, etc. Wireless devices may be mobile or stationary depending on the use / service.

[0199] In FIG. 17, 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.

[0200] Below, the implementation example of Fig. 17 is described in more detail with reference to the drawings.

[0201] FIG. 18 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. 18 may be combined with various embodiments of the present disclosure.

[0202] Referring to FIG. 18, the portable device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a memory unit (130), a power supply unit (140a), an interface unit (140b), and an input / output unit (140c). The antenna unit (108) may be 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. 17, respectively.

[0203] 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.

[0204] 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).

[0205] FIG. 19 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. 19 may be combined with various embodiments of the present disclosure.

[0206] Referring to FIG. 19, 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. 17, respectively.

[0207] 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.

[0208] 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.

[0209] 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 a method for performing wireless communication by a first device, A step of obtaining setting information related to multiple altitude levels; a step of determining the altitude of the first device; and A method comprising: generating an ID (identifier) ​​associated with the first altitude level based on the altitude of the first device being within a first altitude level among the plurality of altitude levels; 2. In paragraph 1, A method wherein the ID associated with the first altitude level is included in at least one of a source layer ID of the first device or a destination layer ID of the first device.

3. In paragraph 1, A method wherein the ID associated with the first altitude level is different from the ID associated with altitude levels other than the first altitude level among the plurality of altitude levels.

4. In paragraph 1, A method in which control information or data including an ID related to an altitude level other than the first altitude level among the plurality of altitude levels is filtered.

5. In paragraph 1, A method wherein the ID associated with the first altitude level is determined based on services available at the first altitude level among the plurality of altitude levels.

6. In paragraph 1, A method in which information including an ID associated with the first altitude level is transmitted from a higher layer of the first device to a lower layer of the first device.

7. In paragraph 6, A method in which information related to at least one of the altitude of the first device, the first altitude level related to the altitude of the first device, the location of the first device, or the quality of service (QoS) requirements of a service available at the first altitude level is transmitted from an upper layer of the first device to a lower layer of the first device together with information including an ID related to the first altitude level.

8. In paragraph 6, The upper layer of the first device is at least one of a V2X (vehicle-to-everything) layer, a UAV (unmanned aerial vehicle) layer, or a PC5 layer, and A method wherein the lower layer of the first device is an AS (access stratum) layer.

9. In paragraph 1, A step of receiving control information or data including an ID related to a second altitude level from a second device; further comprising: A method in which the control information or the data received from the second device is filtered based on the difference between the ID associated with the first altitude level and the ID associated with the second altitude level.

10. In paragraph 9, A method wherein the altitude of the second device is identified as being outside the first altitude level based on the ID associated with the first altitude level being different from the ID associated with the second altitude level.

11. In paragraph 1, A method wherein information for identifying the first device including an ID associated with the first altitude level is generated based on at least one bit of a plurality of bits including bits for a source layer ID of the first device and bits for a destination layer ID of the first device.

12. In paragraph 11, A method wherein the at least one bit associated with the information for identifying the first device is at least one of a least significant bit (LSB) or a most significant bit (MSB) among the plurality of bits.

13. In paragraph 11, A method in which information for identifying the first device is generated based on information transmitted from an application layer of the first device.

14. In a first device configured to perform wireless communication, At least one transmitter / receiver; at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said first device causes: Obtains configuration information related to multiple altitude levels; to determine the altitude of the first device; and A first device that generates an ID (identifier) ​​associated with the first altitude level based on the altitude of the first device being within a first altitude level among the plurality of altitude levels.

15. In a processing device set to control the first device, at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said first device causes: Obtains configuration information related to multiple altitude levels; to determine the altitude of the first device; and A processing device that generates an ID (identifier) ​​associated with the first altitude level based on the altitude of the first device being within a first altitude level among the plurality of altitude levels.

16. A non-transitory computer-readable storage medium that records commands, The above commands, when executed, cause the first device to: Obtains configuration information related to multiple altitude levels; to determine the altitude of the first device; and A non-transitory computer-readable storage medium that generates an ID (identifier) ​​associated with the first altitude level based on the altitude of the first device being within the first altitude level among the plurality of altitude levels.

17. In a method for performing wireless communication by a second device, A step of obtaining setting information related to multiple altitude levels; a step of determining the altitude of the second device; and A step of receiving control information or data including an ID (identifier) ​​related to a first altitude level among the plurality of altitude levels from a first device; comprising: A method in which the control information or the data is filtered based on a difference between an ID associated with a second altitude level including the altitude of the second device and an ID associated with the first altitude level.

18. In a second device configured to perform wireless communication, At least one transmitter / receiver; at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said second device causes: Obtains configuration information related to multiple altitude levels; to determine the altitude of the second device; and To receive control information or data including an ID (identifier) ​​related to a first altitude level among the plurality of altitude levels from the first device, A second device, wherein the control information or the data is filtered based on a difference between an ID associated with a second altitude level including the altitude of the second device and an ID associated with the first altitude level.

19. In a processing device set to control a second device, at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said second device causes: Obtains configuration information related to multiple altitude levels; to determine the altitude of the second device; and To receive control information or data including an ID (identifier) ​​related to a first altitude level among the plurality of altitude levels from the first device, A processing device in which the control information or the data is filtered based on a difference between an ID associated with a second altitude level including the altitude of the second device and an ID associated with the first altitude level.

20. A non-transitory computer-readable storage medium that records commands, The above commands, when executed, cause the second device to: Obtains configuration information related to multiple altitude levels; to determine the altitude of the second device; and To receive control information or data including an ID (identifier) ​​related to a first altitude level among the plurality of altitude levels from the first device, A non-transitory computer-readable storage medium in which the control information or the data is filtered based on a difference between an ID associated with a second altitude level including the altitude of the second device and an ID associated with the first altitude level.

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