Method and device for selecting resource pool of multi-carrier support terminal

Abstract

A method of wireless communication by a first device and a device supporting the same are provided. The method may comprise the steps of: acquiring configuration information related to a plurality of carriers; performing a channel busy rate (CBR) measurement for a first resource pool included in a first carrier among the plurality of carriers; selecting a first carrier based on the CBR measurement value related to the first resource pool being less than a threshold value; and determining a first resource pool for CBR measurement as a resource pool for generating a sidelink (SL) grant based on the first carrier being selected.

Description

Technical Field

[0001] This disclosure relates to wireless communication systems. Background Technology

[0002] 5G NR is the successor to LTE, and it corresponds to a new, zero-based mobile communication system with high performance, low latency, and high availability. 5G NR can use spectrum resources for all available purposes, including low-frequency bands below 1 GHz, mid-frequency bands from 1 GHz to 10 GHz, and high-frequency bands (millimeter waves) of 24 GHz and above.

[0003] 6G (wireless communication) systems aim 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) lower energy consumption for battery-free IoT devices, (vi) ultra-reliable connectivity, and (vii) connected intelligence with machine learning capabilities. The vision for 6G systems can be embodied in four aspects: intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity, and 6G systems can meet the requirements shown in Table 1 below. In other words, Table 1 is an example of the requirements for 6G systems.

[0004] [Table 1]

[0005] Summary of the Invention

[0006] Technical solution

[0007] In one embodiment, a method for performing wireless communication by a first device is provided. The method may include the steps of: obtaining configuration information associated with a plurality of carriers; performing a channel busy rate (CBR) measurement for a first resource pool in a first carrier included among the plurality of carriers; selecting a first carrier based on a CBR measurement value associated with the first resource pool being less than a threshold; and determining the first resource pool used for the CBR measurement as a resource pool for the creation of sidelink (SL) licenses based on the selection of the first carrier.

[0008] 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 connected to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the first device to perform operations including: obtaining configuration information associated with a plurality of carriers; performing a channel busy rate (CBR) measurement for a first resource pool included in the plurality of carriers; selecting a first carrier based on a CBR measurement value associated with the first resource pool being less than a threshold; and determining the first resource pool used for the CBR measurement as a resource pool for the creation of sidelink (SL) licenses based on the selection of the first carrier.

[0009] In one embodiment, a processing means configured to control a first device is provided. The processing means may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the first device to perform operations including: obtaining configuration information associated with a plurality of carriers; performing a channel busy rate (CBR) measurement for a first resource pool included in the plurality of carriers; selecting a first carrier based on a CBR measurement value associated with the first resource pool being less than a threshold; and determining the first resource pool used for the CBR measurement as a resource pool for the creation of a sidelink (SL) license based on the selection of the first carrier.

[0010] In one embodiment, a non-transitory computer-readable storage medium for recording instructions is provided. For example, the instructions, upon execution, cause a first device to perform operations including: obtaining configuration information associated with a plurality of carriers; performing a channel busy rate (CBR) measurement for a first resource pool in a first carrier included among the plurality of carriers; selecting a first carrier based on a CBR measurement value associated with the first resource pool being less than a threshold; and determining the first resource pool used for the CBR measurement as a resource pool for creating a sidelink (SL) license based on the selection of the first carrier. Attached Figure Description

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

[0012] Figure 2 The electromagnetic spectrum according to one embodiment of the present disclosure is shown.

[0013] Figure 3 An example of a typical NTN scenario based on a transparent payload, based on an embodiment of this disclosure, is shown.

[0014] Figure 4An example of a typical NTN scenario based on a regenerable payload, based on an embodiment of this disclosure, is shown.

[0015] Figure 5 An example of sensing operation based on an embodiment of this disclosure is shown.

[0016] Figure 6 The time slot structure of a frame based on an embodiment of this disclosure is shown.

[0017] Figure 7 An example of a BWP according to an embodiment of this disclosure is shown.

[0018] Figure 8 The process of a UE performing V2X or SL communication based on a resource allocation mode according to an embodiment of the present disclosure is illustrated.

[0019] Figure 9 A method for selecting a resource pool for license creation from among multiple resource pools included in a candidate carrier selected based on a carrier selection process is shown, according to an embodiment of the present disclosure.

[0020] Figure 10 A method for selecting a resource pool for license creation from among multiple resource pools included in a candidate carrier selected based on a carrier selection process is shown, according to an embodiment of the present disclosure.

[0021] Figure 11 The process of a first device performing wireless communication according to one embodiment of the present disclosure is illustrated.

[0022] Figure 12 The process of a second device performing wireless communication according to one embodiment of the present disclosure is illustrated.

[0023] Figure 13 A communication system 1 based on an embodiment of the present disclosure is shown.

[0024] Figure 14 A wireless device according to an embodiment of the present disclosure is shown.

[0025] Figure 15 A signal processing circuit for transmitting signals according to an embodiment of the present disclosure is shown.

[0026] Figure 16 Another example of a wireless device according to an embodiment of the present disclosure is shown.

[0027] Figure 17 A handheld device according to an embodiment of the present disclosure is shown.

[0028] Figure 18 A vehicle or autonomous vehicle according to an embodiment of this disclosure is shown. Detailed Implementation

[0029] In this disclosure, "A or B" may mean "A only", "B only", or "both A and B". In other words, in this disclosure, "A or B" can be interpreted as "A and / or B". For example, in this disclosure, "A, B or C" may mean "A only", "B only", "C only", or "any combination of A, B, and C".

[0030] The forward slash ( / ) or comma used in this disclosure can mean "and / or". For example, "A / B" can mean "A and / or B". Therefore, "A / B" can mean "A only", "B only", or "both A and B". For example, "A, B, C" can mean "A, B, or C".

[0031] In this disclosure, "at least one of A and B" may mean "only A", "only B" or "both A and B". Furthermore, in this disclosure, the expression "at least one of A or B" or "at least one of A and / or B" may be interpreted as "at least one of A and B".

[0032] Additionally, in this disclosure, "at least one of A, B, and C" may mean "A only", "B only", "C only" or "any combination of A, B, and C". Furthermore, "at least one of A, B, or C" or "at least one of A, B, and / or C" may mean "at least one of A, B, and C".

[0033] Additionally, the brackets used in this disclosure may mean "for example". Specifically, when indicated as "Control Message (PDCCH)", this may mean that "PDCCH" is cited as an example of "control message". In other words, "control message" in this disclosure is not limited to "PDCCH", and "PDCCH" may be cited as an example of "control message". Specifically, when indicated as "control message (i.e., PDCCH)", this may also mean that "PDCCH" is cited as an example of "control message".

[0034] In the following description, "when, if, or in the case of" can be replaced with "based on".

[0035] The technical features described in one of the accompanying drawings in this disclosure can be implemented individually or simultaneously.

[0036] In this disclosure, higher-layer parameters can be parameters configured, pre-configured, or predefined for the UE. For example, a base station or network can send higher-layer parameters to the UE. For instance, higher-layer parameters can be sent via Radio Resource Control (RRC) signaling or Media Access Control (MAC) signaling.

[0037] In this disclosure, "configured or defined" can be interpreted as being configured to or pre-configured to a device via predefined signaling (e.g., SIB, MAC, RRC) from a base station or network. In this disclosure, "configured or defined" can be interpreted as being pre-configured to a device.

[0038] The techniques described in this disclosure can be used in various wireless communication systems such as Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), and Single Carrier Frequency Division Multiple Access (SC-FDMA). CDMA can be implemented using radio technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA-2000. TDMA can be implemented using radio technologies such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rate GSM Evolution (EDGE). OFDMA can be implemented using radio technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Evolved UTRA (E-UTRA), Long Term Evolution (LTE), and 5G NR.

[0039] The technologies proposed in this disclosure can be implemented as 6G wireless technologies and can be applied to various 6G systems. 6G systems can possess key features such as eMBB (enhanced Mobile Broadband), ultra-reliable low-latency communication (URLLC), massive machine-type communication (mMTC), artificial intelligence (AI) integrated communication, tactile internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion, and enhanced data security.

[0040] Figure 1 A communication structure that can be provided in a 6G system according to one embodiment of the present disclosure is shown. Figure 1 The implementation methods can be combined with various implementation methods of this disclosure.

[0041] New network features in 6G may include: - Satellite Integrated Network - Connecting Intelligence: Unlike previous generations of wireless communication systems, 6G is revolutionary, and wireless evolution will shift from "connecting everything" to "connecting intelligence." AI can be applied to every step of the communication process (or every step of signal processing as described below).

[0042] - Seamless integration of wireless information and power transfer

[0043] - Ubiquitous Hyper-3D Connectivity: Hyper-3D connectivity will be created in ubiquitous 6G for access to drones, networks of very low Earth orbit satellites, and core network functions.

[0044] Among the new network features of 6G mentioned above, some general requirements can be as follows.

[0045] - Small community network

[0046] - Ultra-dense heterogeneous networks

[0047] - High-capacity return

[0048] - Radar technology integrated with mobile technology: High-precision positioning (or location-based services) achieved through communication is one of the functions of 6G wireless communication systems. Therefore, radar systems will be integrated with 6G networks.

[0049] - Softwareization and Virtualization

[0050] The key implementation technologies of 6G systems are described below.

[0051] - Artificial Intelligence: Introducing AI into telecommunications can simplify and improve real-time data transmission. AI can use numerous analyses to determine how to perform complex, goal-oriented operations, meaning it can improve efficiency and reduce processing latency. Time-consuming tasks such as handover, network selection, and resource scheduling can be completed instantly using AI. AI can also play a significant role in 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, smart structures, smart networks, smart devices, intelligent cognitive radios, self-sustaining wireless networks, and machine learning.

[0052] - THz communication (terahertz communication): Data rates can be increased by increasing bandwidth. This can be achieved by using sub-THz communication with wide bandwidth and applying advanced massive MIMO technology. THz waves (also known as sub-millimeter radiation) refer to the frequency band between 0.1 THz and 10 THz, where the corresponding wavelengths are typically in the range of 0.03 mm to 3 mm. The 100 GHz-300 GHz frequency band range (sub-THz band) is considered the main part of the THz frequency band used for cellular communication. Adding sub-THz bands to the millimeter wave band increases the capacity of 6G cellular communication. The 300 GHz-3 THz band in the defined THz frequency band is in the far-infrared (IR) band. The 300 GHz-3 THz band is part of the optical band, but it is on the boundary of the optical band, just behind the RF band. Therefore, the 300 GHz-3 THz band exhibits similarity to RF. Figure 2 The electromagnetic spectrum according to one embodiment of the present disclosure is shown. Figure 2 The implementation methods can be combined with various embodiments of this disclosure. Key characteristics of THz communication include (i) a wide range of available bandwidth supporting very high data rates, and (ii) high path loss at high frequencies (for which highly directional antennas are indispensable). The narrow beamwidth generated by highly directional antennas reduces interference. The small wavelength of THz signals allows a greater number of antenna elements to be integrated into devices and base stations operating in this band. This enables the use of advanced adaptive array techniques that can overcome range limitations.

[0053] - Massive MIMO

[0054] - Holographic Beamforming (HBF)

[0055] - Optical wireless technology

[0056] - FSO backhaul network

[0057] - Quantum communication

[0058] - Cellular communication

[0059] - Integration of wireless information and power transmission

[0060] - Integration of wireless communication and sensing

[0061] - Integrated access and backhaul networks

[0062] Big Data Analytics

[0063] - Reconfigurable smart surfaces

[0064] - Metaverse

[0065] - Blockchain

[0066] - Unmanned Aerial Vehicles (UAVs): UAVs, or unmanned aerial vehicles, will be a crucial component of 6G wireless communication. In most cases, UAV technology will be used to provide high-speed data wireless connectivity. Base station (BS) entities are mounted on UAVs to provide cellular connectivity. UAVs possess specific characteristics not found in fixed BS infrastructure (e.g., ease of deployment, strong line-of-sight links, and degrees of freedom for controlled mobility). During emergencies such as natural disasters, the deployment of terrestrial communication infrastructure is economically infeasible and sometimes unable to provide service in volatile environments. UAVs can easily handle these situations. UAVs will be a new paradigm in wireless communication. This technology contributes to the three fundamental requirements of wireless networks: eMBB, URLLC, and mMTC. UAVs can also support many other purposes such as enhanced network connectivity, fire detection, disaster emergency services, security and surveillance, pollution monitoring, parking monitoring, accident monitoring, and more. Therefore, UAV technology is considered one of the most important technologies for 6G communication.

[0067] - Advanced Air Mobility (AAM): AAM is a higher-level concept than Urban Air Mobility (UAM). UAM refers to air transportation that can be used in urban centers, while AAM can refer to transportation that includes movement between urban centers and regional bases.

[0068] - Autonomous Driving (Autonomous Driving, Self-Driving): Vehicle-to-everything (V2X) (a key element in building the infrastructure for autonomous driving) is a technology that allows vehicles to communicate with various elements on the road and share information to perform autonomous driving (e.g., vehicle-to-vehicle (V2V) wireless communication and vehicle-to-infrastructure (V2I) wireless communication). To maximize the performance of autonomous driving and ensure high safety, high transmission speeds and low latency technologies are necessary. Furthermore, in the future, autonomous driving will go beyond simply delivering warnings or guidance messages to the driver to proactively intervene in vehicle operation and directly control the vehicle in dangerous situations; therefore, the amount of information that needs to be sent and received will be substantial, and 6G is expected to maximize autonomous driving with faster transmission speeds and lower latency than 5G.

[0069] - Non-terrestrial network (NTN): NTN can refer to a network or network segment that uses radio frequency (RF) resources installed on a satellite (or unmanned aerial system (UAS) platform). Figure 3 An example of a typical NTN scenario based on a transparent payload, based on an embodiment of this disclosure, is shown. Figure 4 An example of a typical NTN scenario based on a regenerable payload, based on an embodiment of this disclosure, is shown. Figure 3 or Figure 4 The implementation methods can be combined with various implementation methods of this disclosure. See also... Figure 3 The satellite (or UAS platform) can establish a service link with the UE. The satellite (or UAS platform) can connect to the gateway via a feed link. The satellite can connect to the data network via the gateway. The beam coverage area refers to the area capable of receiving signals transmitted by the satellite. (See reference...) Figure 4 A satellite (or UAS platform) can establish a service link with the UE. A satellite (or UAS platform) connected to the UE can connect to other satellites (or UAS platforms) via an inter-satellite link (ISL). Other satellites (or UAS platforms) can connect to the gateway via a feed link. Based on regenerated payloads, satellites can connect to the data network via other satellites and gateways. If an ISL does not exist between two satellites, a feed link between that satellite and the gateway may be required. Figure 3 and Figure 4This is merely an example of an NTN scenario, and NTN can be implemented based on various types of scenarios. For example, a satellite (or UAS platform) can implement transparent or regenerated (with onboard processing capabilities) payloads. For example, a satellite (or UAS platform) can generate multiple beams over a specified service area based on its field of view. For example, the field of view of a satellite (or UAS platform) can vary based on the onboard antenna pattern and minimum elevation angle. For example, a transparent payload can include RF filtering, frequency conversion, and amplification. Therefore, the waveform signal repeated by this payload can remain unchanged. For example, a regenerated payload can include RF filtering, frequency conversion and amplification, demodulation / decryption, switching and / or routing, and encoding / modulation. For example, a regenerated payload can be roughly equivalent to equipping a satellite (or UAS platform) with all or part of the base station functionality.

[0070] - Integrated Sensing and Communication (ISAC): Wireless sensing is a technology that uses radio frequency (RF) to determine the instantaneous linear velocity, angle, and distance (range) of a target, thereby obtaining information related to the environment and / or the characteristics of the target within the environment. Because RF sensing does not require a connection to the target via a device in the network, it can provide a service for determining the location of a target without the need for such a device. The ability to obtain range, velocity, and angle information from RF signals can provide a wide range of new capabilities, such as the detection of various targets, target identification (e.g., vehicles, humans, animals, unmanned aerial vehicles (UAVs)), and high-precision positioning, tracking, and activity identification. Wireless sensing services can provide information to various industries (e.g., drones, smart homes, vehicle-to-everything (V2X), factories, railways, public safety, etc.) to enable a variety of applications, such as intruder detection, assisted vehicle control and navigation, trajectory tracking, collision avoidance, traffic management, health and traffic management, etc. In some cases, wireless sensing can use 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., sensing operation) may rely on the processing of the transmission, reflection, and scattering of wireless sensing signals. Therefore, wireless sensing can provide an opportunity to enhance existing communication systems from communication networks to wireless and sensing networks. Figure 5 An example of sensing operation based on an embodiment of this disclosure is shown. Figure 5 The implementation methods can be combined with various implementation methods of this disclosure. Specifically, Figure 5 (a) illustrates an example of sensing using a sensing receiver and a sensing transmitter at the same location (e.g., single-station sensing), while Figure 5 (b) illustrates an example of sensing using separate sensing receivers and sensing transmitters (e.g., dual-station sensing).

[0071] The multiple layers of the radio interface protocol between the UE and the network can be classified into Layer 1 (L1), Layer 2 (L2), and Layer 3 (L3) based on the well-known Open Systems Interconnection (OSI) model in communication systems. The Physical (PHY) layer, belonging to Layer 1, provides information transmission services using physical channels, while the Radio Resource Control (RRC) layer, belonging to Layer 3, controls radio resources between the UE and the network. For this purpose, the RRC layer exchanges RRC messages between the UE and the BS.

[0072] The physical layer provides information transmission services to the upper layers through physical channels. The physical layer connects to the Media Access Control (MAC) layer, which is the upper layer, through transport channels. Data is transmitted between the MAC layer and the physical layer via transport channels. Transport channels are classified according to how data is transmitted through the radio interface and what characteristics of the data are transmitted.

[0073] Data is transmitted between different physical layers (i.e., the PHY layer of the transmitter and the PHY layer of the receiver) via a physical channel. The physical channel can be modulated using an orthogonal frequency division multiplexing (OFDM) scheme, and the physical channel uses time and frequency as radio resources.

[0074] The MAC layer provides services to the Radio Link Control (RLC) layer, which is higher than the MAC layer, via logical channels. The MAC layer provides the ability to map multiple logical channels to multiple transport channels. The MAC layer also provides logical channel multiplexing by mapping multiple logical channels to a single transport channel. The MAC layer provides data transmission services through logical channels.

[0075] The RLC layer performs concatenation, segmentation, and reassembly of Radio Link Control Service Data Units (RLC SDUs). To ensure the different Quality of Service (QoS) required by the Radio Bearer (RB), the RLC layer provides three types of operating modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). AM RLC provides error correction through Automatic Repeat Request (ARQ).

[0076] The Radio Resource Control (RRC) layer is defined only in the control plane. The RRC layer is used to control the configuration, reconfiguration, and release of logical, transport, and physical channels associated with RBs. RBs are logical paths for data transmission between the UE and the network, provided by Layer 1 (i.e., the Physical Layer or PHY Layer) and Layer 2 (i.e., the MAC Layer, RLC Layer, Packet Data Convergence Protocol (PDCP) Layer, and Serving Data Adaptation Protocol (SDAP) Layer).

[0077] The Packet Data Convergence Protocol (PDCP) in the user plane performs functions including user data transmission, header compression, and encryption. The Packet Data Convergence Protocol (PDCP) in the control plane performs functions including control plane data transmission and encryption / integrity protection.

[0078] The Service Data Adaptation Protocol (SDAP) layer is defined only in the user plane. The SDAP layer performs the mapping between Quality of Service (QoS) flows and Data Radio Bearers (DRBs) and the QoS Flow ID (QFI) tagging in both DL and UL packets.

[0079] The configuration of an Radio Bearer (RB) refers to the processing used to specify the radio protocol layer and channel attributes to provide specific services, as well as to determine the corresponding detailed parameters and operating methods. RBs can then be classified into two types: Signaling Radio Bearers (SRBs) and Data Radio Bearers (DRBs). SRBs are used as paths for transmitting RRC messages in the control plane, while DRBs are used as paths for transmitting user data in the user plane.

[0080] When an RRC connection is established between the UE's RRC layer and the E-UTRAN's RRC layer, the UE is in the RRC connected (RRC_CONNECTED) state; otherwise, the UE can be in the RRC idle (RRC_IDLE) state. In the NR case, an additional RRC inactive (RRC_INACTRIVE) state is defined, and a UE in the RRC_INACTRIVE state can maintain its connection to the core network while releasing its connection to the BS.

[0081] The downlink transport channels for sending (or transmitting) data from the network to the UE include the Broadcast Channel (BCH) for sending system information and the Shared Downlink Channel (SCH) for sending other user service or control messages. Service or control messages for downlink multicast or broadcast services can be sent via the downlink SCH or via a separate downlink multicast channel (MCH). Furthermore, the uplink transport channels for sending (or transmitting) data from the UE to the network include the Random Access Channel (RACH) for sending initial control messages and the Shared Uplink Channel (SCH) for sending other user service or control messages.

[0082] Examples of logical channels that belong to a higher layer than the transport channel and are mapped to the transport channel may include the Broadcast Control Channel (BCCH), Paging Control Channel (PCCH), Common Control Channel (CCCH), Multicast Control Channel (MCCH), Multicast Service Channel (MTCH), etc.

[0083] In NR, radio frames can be used to perform uplink and downlink transmissions. A radio frame is 10 ms long and can be defined as consisting of two half-frames (HF). A half-frame can include five 1 ms subframes (SF). A subframe (SF) can be divided into one or more time slots, and the number of time slots within a subframe can be determined according to the subcarrier spacing (SCS). Each time slot can include 12 or 14 OFDM (A) symbols depending on the cyclic prefix (CP).

[0084] With normal CP, each time slot can include 14 symbols. With extended CP, each time slot can include 12 symbols. In this paper, symbols can include OFDM symbols (or CP-OFDM symbols) and single-carrier-FDMA (SC-FDMA) symbols (or Discrete Fourier Transform Extended OFDM (DFT-s-OFDM) symbols).

[0085] Table 2 below shows the number of symbols per slot (N) based on the SCS configuration (u) when using normal CP or extended CP. slot symb Number of time slots per frame (N) frame,μ slot ) and the number of time slots per subframe (N) subframe,μ slot ).

[0086] [Table 2]

[0087]

[0088] Figure 6 The structure of a time slot for an NR frame based on an embodiment of this disclosure is shown. Figure 6 The implementation methods can be combined with various implementation methods of this disclosure.

[0089] Reference Figure 6 A time slot comprises multiple symbols in the time domain. A carrier comprises multiple subcarriers in the frequency domain. A resource block (RB) can be defined as multiple consecutive subcarriers in the frequency domain (e.g., 12 subcarriers). A bandwidth portion (BWP) can be defined as multiple consecutive (physical) resource blocks ((P)RBs) in the frequency domain, and a BWP can correspond to a set of parameters (e.g., SCS, CP length, etc.). A carrier can include up to N BWPs (e.g., 5 BWPs). Data communication can be performed via active BWPs. Each element can be referred to as a resource element (RE) in the resource grid, and a complex number of symbols can be mapped to each element.

[0090] A BWP can be a contiguous set of Physical Resource Blocks (PRBs) within a given set of parameters. A PRB can be a contiguous set of Common Resource Blocks (CRBs) for a given set of parameters on a given carrier.

[0091] Figure 7 An example of a BWP according to an embodiment of this disclosure is shown. Figure 7 The implementation methods can be combined with various implementation methods of this disclosure. It is assumed that in... Figure 7 In this implementation, the number of BWPs is 3.

[0092] Reference Figure 7 A Common Resource Block (CRB) can be a carrier resource block numbered from one end of a carrier frequency band to the other. Alternatively, a Producer Resource Block (PRB) can be a resource block numbered within each BWP. Point A can indicate a common reference point for the resource block grid.

[0093] It can be determined by point A and the offset (N) relative to point A. start BWP ) and bandwidth (N size BWP The BWP can be configured using a parameter set. For example, point A can be an external reference point of the PRB of a carrier, with subcarrier 0 of all parameter sets (e.g., all parameter sets supported by the network on the corresponding carrier) aligned at point A. For example, the offset can be the PRB distance between the lowest subcarrier in a given parameter set and point A. For example, the bandwidth can be the number of PRBs in a given parameter set.

[0094] Sidelink synchronization signals (SLSS) can include a primary sidelink synchronization signal (PSSS) and a secondary sidelink synchronization signal (SSSS) as SL-specific sequences. The PSSS can be referred to as the primary sidelink synchronization signal (S-PSS), and the SSSS can be referred to as the secondary sidelink synchronization signal (S-SSS). For example, a 127-character M-sequence can be used for the S-PSS, and a 127-character Gold sequence can be used for the S-SSS. For example, a UE can use the S-PSS for initial signal detection and synchronization acquisition. For example, a UE can use both the S-PSS and S-SSS for detailed synchronization acquisition and for detecting the synchronization signal ID.

[0095] The Physical Sidelink Broadcast Channel (PSBCH) can be a (broadcast) channel used to transmit default (system) information that the UE must know before SL signal transmission / reception. For example, the default information could be related to SLSS, duplex mode (DM), Time Division Duplex (TDD) uplink / downlink (UL / DL) configuration, resource pool information, and application types related to SLSS, subframe offset, and broadcast information. For instance, to evaluate PSBCH performance in NR V2X, the PSBCH payload size can be 56 bits, including 24 bits of Cyclic Redundancy Check (CRC).

[0096] S-PSS, S-SSS, and PSBCH can be included in a block format that supports periodic transmission (e.g., SL synchronization signal (SS) / PSBCH block, hereinafter, sidelink synchronization signal block (S-SSB)). The S-SSB can have the same parameter set (i.e., SCS and CP lengths) as the Physical Sidelink Control Channel (PSCCH) / Physical Sidelink Shared Channel (PSSCH) in the carrier, and the transmission bandwidth can exist within a (pre-)configured sidelink (SL) BWP. For example, the S-SSB can have a bandwidth of 11 resource blocks (SBs). For example, the PSBCH can exist across 11 RBs. Additionally, the frequency location of the S-SSB can be (pre-)configured. Therefore, the UE does not need to perform hypothesis detection at the frequency to discover the S-SSB in the carrier.

[0097] In this disclosure, PSCCH can be replaced by control channel, physical control channel, side-link related control channel, side-link related physical control channel, etc. In this disclosure, PSSCH can be replaced by shared channel, physical shared channel, side-link related shared channel, side-link related physical shared channel, etc.

[0098] Figure 8 The process of a UE performing V2X or SL communication based on a resource allocation mode according to an embodiment of this disclosure is illustrated. Figure 8 The implementation methods can be combined with various implementation methods of this disclosure.

[0099] Reference Figure 8 In (a) of resource allocation mode 1, the base station can schedule SL resources that will be used by the UE for SL transmission. For example, in step S600, the base station can send information related to SL resources and / or information related to UL resources to the first UE. For example, UL resources may include PUCCH resources and / or PUSCH resources. For example, UL resources may be resources used to report SL HARQ feedback to the base station.

[0100] For example, the first UE can receive information related to Dynamic Grant (DG) resources and / or Configuration Grant (CG) resources from the base station. For example, CG resources may include CG Type 1 resources or CG Type 2 resources. In this disclosure, DG resources can be resources configured / allocated to the first UE by the base station via Downlink Control Information (DCI). In this disclosure, CG resources can be (periodic) resources configured / allocated to the first UE by the base station via DCI and / or RRC messages. For example, in the case of CG Type 1 resources, the base station can send an RRC message including information related to the CG resources to the first UE. For example, in the case of CG Type 2 resources, the base station can send an RRC message including information related to the CG resources to the first UE, and the base station can send a DCI related to the activation or release of the CG resources to the first UE.

[0101] In step S810, the first UE can send the PSCCH (e.g., Side Link Control Information (SCI) or Level 1 SCI) to the second UE based on resource scheduling. In step S820, the first UE can send the PSSCH (e.g., Level 2 SCI, MAC PDU, data, etc.) associated with the PSCCH to the second UE. In step S830, the first UE can receive the PSFCH associated with the PSCCH / PSSCH from the second UE. For example, it can receive HARQ feedback information (e.g., NACK or ACK information) from the second UE via the PSFCH. In step S840, the first UE can send / report the HARQ feedback information to the base station via PUCCH or PUSCH. For example, the HARQ feedback information reported to the base station can be information generated by the first UE based on the HARQ feedback information received from the second UE. For example, the HARQ feedback information reported to the base station can be information generated by the first UE based on pre-configured rules. For example, the DCI can be a DCI used for SL scheduling.

[0102] Reference Figure 8In (b) of resource allocation mode 2, the UE can determine the SL transmission resources within the SL resources configured by the base station / network or the pre-configured SL resources. For example, the configured SL resources or the pre-configured SL resources can be a resource pool. For example, the UE can autonomously select or schedule resources for SL transmission. For example, the UE can perform SL communication by autonomously selecting resources within the configured resource pool. For example, the UE can autonomously select resources within the selection window by performing a sensing process and a resource (re)selection process. For example, sensing can be performed on a sub-channel basis. For example, in step S810, the first UE, which has selected resources from the resource pool, can send the PSCCH (e.g., Side Link Control Information (SCI) or Level 1 SCI) to the second UE using the resources. In step S820, the first UE can send the PSSCH (e.g., Level 2 SCI, MAC PDU, data, etc.) associated with the PSCCH to the second UE. In step S830, the first UE can receive the PSFCH associated with the PSCCH / PSSCH from the second UE.

[0103] Reference Figure 8 In (a) or (b), for example, the first UE may send an SCI to the second UE via a PSCCH. Alternatively, for example, the first UE may send two consecutive SCIs (e.g., a level 2 SCI) to the second UE via a PSCCH and / or a PSSCH. In this case, the second UE may decode the two consecutive SCIs (e.g., a level 2 SCI) to receive the PSSCH from the first UE. In this disclosure, an SCI sent via a PSCCH may be referred to as the first SCI, first-level SCI, or first-level SCI format, and an SCI sent via a PSSCH may be referred to as the second SCI, second-level SCI, second-level SCI, or second-level SCI format.

[0104] Reference Figure 8 In step (a) or (b), the first UE may receive the PSFCH in step S830. For example, the first UE and the second UE may determine the PSFCH resource, and the second UE may use the PSFCH resource to send HARQ feedback to the first UE.

[0105] Reference Figure 8 In step (a), the first UE can send SL HARQ feedback to the base station via PUCCH and / or PUSCH.

[0106] Furthermore, in conventional LTE V2X, a UE that supports multi-channel operation (e.g., multi-carrier operation or carrier aggregation (CA)) can select a specific carrier for transmitting sidelink data, and can transmit sidelink data via the selected resources and the selected carrier by selecting the resources available in the selected carrier.

[0107] Furthermore, according to existing technology, the UE can perform carrier selection based on Channel Busy Rate (CBR) measurements for resource pools. However, when multiple resource pools are configured in the selected carrier, the following problems may arise if no method is defined for determining / selecting the resource pool used to create a license among the multiple resource pools. For example, although a carrier is selected based on CBR measurements for resource pools, it may be necessary to perform CBR measurements for each of the multiple resource pools to determine / select the resource pool used to create a license among the multiple resource pools included in the selected carrier. In this case, for example, the UE's overhead may increase when the UE performs CBR measurements again for each of the multiple resource pools. Or, for example, when the UE performs CBR measurements again for a resource pool that has already been determined to be below a threshold by performing CBR measurements, the UE's transmission may be delayed, which may reduce the reliability of the service provided by the UE, or the UE's unnecessary power consumption may increase.

[0108] In this disclosure, a method for (re)selecting a carrier or resource that supports multi-carrier operation and an apparatus for supporting the method are provided below.

[0109] For example, the process of (re)selecting the transmit (TX) carrier for NR sidelink communication can be as follows.

[0110] For example, if the CBR measurement result is available, the MAC entity can treat the carrier's CBR as the CBR measured by the lower layer according to Technical Specification (TS) 38.214, or if the CBR measurement result is unavailable, it is the corresponding sl-defaultTxConfigIndex configured by the upper layer for the carrier.

[0111] For example, if a TX carrier (re)selection is triggered for a sidelink procedure in accordance with Clause 5.22.1.1 of TS 38.321, the MAC entity may perform the following actions.

[0112] 1> If the selected sidelink license is not available on any carrier of the sidelink logical channel that allows data availability as indicated by the upper layer: 2> If the CBR of a carrier is lower than [sl-threshCBR-FreqReselection] associated with the priority of the sidelink logical channel, then for each carrier configured in the upper layer associated with the relevant sidelink logical channel: 3> When a carrier meets all of the following conditions, it is considered a candidate carrier for (re)selection of the TX carrier of the relevant side link logical channel.

[0113] 4> If sl-HARQ-FeedbackEnabled is configured to be enabled for a sidelink logical channel: 5> The carrier includes (or belongs to) at least one resource pool that is configured with PSFCH resources, other than the pool in sl-BWP-DiscPoolConfig or sl-BWP-DiscPoolConfigCommon (if configured).

[0114] 1> Otherwise: 2> If the CBR of a carrier is lower than [sl-threshCBR-FreqReselection] associated with the priority of the sidelink logical channel, then for each sidelink logical channel (if any), where data is available and allowed on the carrier that triggers Tx carrier (re)selection according to clause 5.22.1.1 of TS 38.321: 3> Select carrier and associated resource pool.

[0115] 2> Otherwise: 3> If the carrier's CBR is lower than the [sl-threshCBR-FreqReselection] which is related to the priority of the sidelink logical channel: 4> For each carrier configured in the upper layer that allows sidelink logical channels, the carrier is considered a candidate carrier for (re)selection of the TX carrier if the carrier meets all of the following conditions.

[0116] 5> If sl-HARQ-FeedbackEnabled is configured to be enabled for a sidelink logical channel: 6> The carrier includes (or belongs to) at least one resource pool that is configured with PSFCH resources, other than the pool in sl-BWP-DiscPoolConfig or sl-BWP-DiscPoolConfigCommon (if configured).

[0117] For example, a MAC entity can perform the following operations.

[0118] 1> If one or more carriers are considered as candidate carriers for (re)selection of the TX carrier: 2> If a Tx carrier (re)selection is triggered, then for each sidelink logical channel allowed on the carrier where data is available: 3> When the relevant pool meets all of the following conditions, select one or more carriers and relevant resource pools from the candidate carriers with CBR increasing from the lowest CBR.

[0119] 4> If sl-HARQ-FeedbackEnabled is configured to be enabled for a sidelink logical channel: 5> The relevant pool is a resource pool that is configured with PSFCH resources, other than the pools in sl-BWP-DiscPoolConfig or sl-BWP-DiscPoolConfigCommon (if configured).

[0120] 4> Otherwise: 5> The relevant pool is any resource pool other than the pools in sl-BWP-DiscPoolConfig or sl-BWP-DiscPoolConfigCommon (if configured).

[0121] For example, as a reference, the number of carriers selected based on UE capabilities depends on the UE implementation.

[0122] For example, for reference, the sidelink logical channel that determines whether data is available in the sidelink logical channel and is allowed on the carrier that triggers the (re)selection of the Tx carrier depends on the UE implementation.

[0123] For example, a UE that supports multi-carrier operation can perform the following carrier selection operation and resource pool selection operation to create a license.

[0124] For example, a UE can select or determine candidate carriers for sidelink data transmission by considering the HARQ feedback attributes (e.g., HARQ feedback enabled or HARQ feedback disabled) of its sidelink data (e.g., logical channel data, MAC CE, PC5 RRC messages, or PC5-S messages). For instance, a UE can consider carriers that include resource pools configured with PSFCH as candidate carriers for transmission of sidelink data where the HARQ feedback attribute is HARQ feedback enabled. Alternatively, for example, a UE can consider carriers that include resource pools configured with PSFCH or resource pools without PSFCH as candidate carriers for transmission of sidelink data where the HARQ feedback attribute is HARQ feedback disabled. For example, a UE can select a resource pool for channel busy rate (CBR) measurement from among multiple resource pools included in the candidate carriers selected considering HARQ feedback attributes. Furthermore, for example, if the CBR measurement in the selected resource pool is less than sl-threshCBR-FreqReselection (e.g., if the CBR of a carrier is less than sl-threshCBR-FreqReselection related to the priority of the sidelink logical channel), the corresponding carrier can be determined as the final candidate carrier to be used. For example, if the UE selects multiple final candidate carriers, the carriers to be used for sidelink data transmission can be determined in ascending (or descending) order based on the carrier with the lowest CBR measurement value (or, carriers including the resource pool with the lowest CBR measurement value). Furthermore, for example, if the carrier to be used is determined (e.g., a carrier that meets a threshold condition for the CBR measurement value), the UE can determine the resource pool selected for CBR measurement within the corresponding carrier as the resource pool for sidelink license creation, and can create a sidelink license based on that resource pool. Alternatively, for example, if the carrier to be used is determined (e.g., a carrier that meets a threshold condition for the CBR measurement value), the UE can select the resource pool for sidelink license creation from the resource pools included in the corresponding carrier. In this scenario, for example, the UE can determine the resource pool with the lowest CBR measurement value as the resource pool for sidelink license creation by measuring the CBR for the resource pool.For example, if the CBR measurement during the carrier selection process / step meets the CBR threshold condition (e.g., the carrier's CBR is lower than sl-threshCBR-FreqReselection related to the priority of the sidelink logical channel), but the CBR is measured again after carrier selection to select a resource pool due to a CBR change (e.g., the CBR measurement for all resource pools that satisfy the HARQ attributes of the sidelink data included in the carrier does not meet the CBR threshold condition), and the CBR measurement of the resource pools included in the carrier does not meet the CBR threshold condition (e.g., the carrier's CBR is lower than sl-threshCBR-FreqReselection related to the priority of the sidelink logical channel), the carrier selection process can be re-executed by triggering a carrier (re)selection process. For example, this carrier (re)selection process can be executed continuously until a carrier that meets the CBR threshold condition is found (e.g., the carrier's CBR is lower than sl-threshCBR-FreqReselection related to the priority of the sidelink logical channel).

[0125] For example, the above rules can be applied to sidelink licenses limited to those related to non-periodic resource reservations.

[0126] Figure 9 A method for selecting a resource pool for license creation from among multiple resource pools included in a candidate carrier selected based on a carrier selection process is shown, according to an embodiment of the present disclosure.

[0127] Reference Figure 9 The UE can obtain configuration information related to multiple carriers, including carrier #1 and carrier #2. For example, it can be configured to include multiple resource pools for each of the multiple carriers. For example, carrier #1 can be configured to include resource pool #1-1 and resource pool #1-2. For example, carrier #2 can be configured to include resource pool #2-1 and resource pool #2-2. Furthermore, the multiple resource pools configured for each carrier can be divided based on time division multiplexing (TDM) or frequency division multiplexing (FDM), but for ease of explanation... Figure 9The diagram illustrates FDM-based operation. That is, for example, resource pools #1-1 and #1-2 included in carrier #1 can be partitioned based on FDM, and resource pools #2-1 and #2-2 included in carrier #2 can also be partitioned based on FDM. For example, the UE can select candidate carriers for TX carrier selection from among multiple carriers. For example, candidate carriers can be selected based on the carrier's Channel Busy Rate (CBR) measurement. For example, a CBR measurement for a carrier can be performed based on a CBR measurement for at least one resource pool included in the carrier. For example, if a carrier includes multiple resource pools, the resource pool for CBR measurement can be determined by considering whether HARQ feedback for the carrier-related logical channels is enabled. For example, a CBR measurement can be performed for resource pools #1-1 and #1-2 included in carrier #1, and for resource pools #2-1 and #2-2 included in carrier #2. For example, if the CBR measurement for resource pool #1-1 is below the CBR threshold and the CBR measurement for resource pool #2-1 is above the CBR threshold, carrier #1, which includes resource pool #1-1, can be identified as a candidate carrier, and carrier #2, which includes resource pool #2-1, can be excluded from the candidate carrier selection. For example, if available data appears in the logical channel associated with carrier #1 selected in the aforementioned carrier selection process, carrier #1 can be selected as the carrier for data transmission. In this case, for example, when creating a license (or transmission resource) for data transmission, resource pool #1-1 from both resource pool #1-1 and resource pool #1-2 included in carrier #1 can be selected as the resource pool for creating the license (or transmission resource). That is, for example, the resource pool for which CBR measurements were performed for carrier selection during a process prior to the resource selection process can be identified (or reused) as the resource pool for creating the license. In this case, for example, if the license creation process is performed based on resource pool #1-1, the process related to sensing resource pool #1-1 can be skipped. Alternatively, for example, if the license creation process is performed based on resource pool #1-1, a license (or transport resource) with guaranteed reliability can be created in resource pool #1-1. Alternatively, for example, if the license creation process is performed based on resource pool #1-1, the probability that a transport performed via carrier #1 based on resource pool #1-1 will be successfully executed can be increased.

[0128] Figure 10 A method for selecting a resource pool for license creation from among multiple resource pools included in a candidate carrier selected based on a carrier selection process is shown, according to an embodiment of the present disclosure. Figure 10 The implementation methods can be combined with various implementation methods of this disclosure.

[0129] Reference Figure 10 As mentioned above Figure 9In this implementation, when the UE obtains configuration information related to multiple carriers, it can be configured to include multiple resource pools for each carrier included in the multiple carriers. For example, the multiple carriers may include carrier #1, carrier #2, and carrier #3. Furthermore, for example, carrier #1 can be configured to include resource pool #1-1 and resource pool #1-2, carrier #2 can be configured to include resource pool #2-1 and resource pool #2-2, and carrier #3 can be configured to include resource pool #3-1 and resource pool #3-2. Furthermore, for example, resource pool #1-1 included in carrier #1, resource pool #2-1 included in carrier #2, and resource pool #3-1 included in carrier #3 can be configured to include PSFCH resources. Furthermore, for example, resource pool #1-2 included in carrier #1, resource pool #2-2 included in carrier #2, and resource pool #3-2 included in carrier #3 can be configured not to include PSFCH resources. Furthermore, for example, if multiple resource pools are configured in a carrier, the resource pool selected for performing carrier selection-related CBR measurements can be determined by considering whether HARQ feedback for the carrier-related logical channel is enabled and whether each resource pool includes PSFCH resources. For example, if HARQ feedback for the logical channel associated with carrier #1 is enabled, resource pool #1-1, which includes PSFCH resources, can be selected from the multiple resource pools included in carrier #1 as the resource pool for carrier selection-related CBR measurements. Similarly, for example, if HARQ feedback for the logical channel associated with carrier #3 is enabled, resource pool #3-1, which includes PSFCH resources, can be selected from the multiple resource pools included in carrier #3 as the resource pool for carrier selection-related CBR measurements. Furthermore, for example, if HARQ feedback for the logical channel associated with carrier #2 is disabled, then since any resource pool included in carrier #2 (resource pool #2-1 including PSFCH resources and resource pool #2-2 excluding PSFCH resources) can be selected as the resource pool for CBR measurements related to carrier selection, resource pool #2-2 excluding PSFCH resources can also be selected as the resource pool for CBR measurements related to carrier selection. For example, if the CBR measurement values ​​for resource pool #1-1 and resource pool #2-2 are below the CBR threshold and the CBR measurement value for resource pool #3-1 is above the CBR threshold, then carrier #1 including resource pool #1-1 and carrier #2 including resource pool #2-2 can be selected as candidate carriers, and carrier #3 including resource pool #3-1 can not be selected as a candidate carrier. For example, the UE can perform transmission based on carrier #1 and carrier #2 selected as candidate carriers.For example, if available data is found in each logical channel associated with carrier #1 or carrier #2, it may be necessary to create a license for performing a transmission, and it may be necessary to select a resource pool for creating the license. In this case, for example, the UE may select (or reuse) either resource pool #1-1 or resource pool #2-2 on which CBR measurements were performed as the resource pool for creating the license. That is, for example, even if carrier #1, which includes both resource pool #1-1 and resource pool #1-2, is selected as a candidate carrier among multiple carriers based on the carrier selection process, resource pool #1-1, on which CBR measurements were directly performed during the carrier selection process, may also be selected (or reused) as the resource pool for creating the license, and resource pool #1-2, on which CBR measurements were not performed, may not be selected as the resource pool for creating the license. Alternatively, for example, even if carrier #2, which includes resource pools #2-1 and #2-2, is selected as a candidate carrier based on the carrier selection process, resource pool #2-2, which directly performed CBR measurements during the carrier selection process, can be selected (or reused) as the resource pool for creating a license, and resource pool #2-1, which did not directly perform CBR measurements, can be excluded as the resource pool for creating a license. Furthermore, for example, the UE can transmit logical channel data with HARQ feedback enabled via carrier #1 based on a license created in resource pool #1. Alternatively, for example, the UE can transmit logical channel data with HARQ feedback disabled via carrier #2 based on a license created in resource pool #2-2.

[0130] The multicarrier representations illustrated in this disclosure can be extended and interpreted as carrier aggregation (CA).

[0131] The CBR threshold associated with the SL carrier / SL BWP / SL HARQ entities illustrated in this disclosure can be configured by priority or by QoS profile (e.g., packet delay budget (PDB) or reliability) or by SL radio bearer or by logical channel.

[0132] The SL carrier representation illustrated in this disclosure can be extended and interpreted as a sidelink BWP or a sidelink HARQ entity.

[0133] The unicast service illustrated in this disclosure can be interpreted as a pair of source tier-2 IDs and destination tier-2 IDs.

[0134] The multicast service illustrated in this disclosure can be interpreted as a multicast destination layer-2 ID.

[0135] The broadcast service illustrated in this disclosure can be interpreted as a broadcast destination layer-2 ID.

[0136] The term "carrier" as used in this disclosure may be replaced by "band", "set of resource blocks for a specific carrier", "set of resource pools for a specific carrier", or "channel".

[0137] For example, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured (differently or independently) for each SL channel access priority category (CAPC). For example, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured (differently or independently) for each SL-LBT type (e.g., Type 1 LBT, Type 2A LBT, Type 2B LBT, Type 2C LBT). For example, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be specifically (or differently or independently) configured based on whether frame-based LBT is applied. For example, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be specifically (or differently or independently) configured based on whether load-based LBT is applied.

[0138] For example, the methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured to be applied for each resource pool (differently or independently). For example, the methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured to be applied for each congestion level (differently or independently). For example, the methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured to be applied for each service priority (differently or independently). For example, the methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured to be applied for each service type (differently or independently). For example, the methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured to be applied for each QoS requirement (e.g., latency, reliability) (differently or independently). For example, the methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured to be applied for each PQI (5G QoS Identifier (5QI) for PC5) (differently or independently). For example, the application of the proposed methods / rules and / or related parameters (e.g., thresholds) of this disclosure can be configured (differently or independently) for each service type (e.g., periodically generated or non-periodically generated). Similarly, the application of the proposed methods / rules and / or related parameters (e.g., thresholds) of this disclosure can be configured (differently or independently) for each SL transport resource allocation mode (e.g., mode 1 or mode 2). Likewise, the application of the proposed methods / rules and / or related parameters (e.g., thresholds) of this disclosure can be configured (differently or independently) for each 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).

[0139] For example, the applicability of the rules proposed in this disclosure and / or the related parameter configuration values ​​can be configured (differently or independently) based on the activation / deactivation status of the Uu bandwidth portion. For example, the applicability of the rules proposed in this disclosure and / or the related parameter configuration values ​​can be configured (differently or independently) based on whether the sidelink bandwidth portion is active or deactivated. For example, the applicability of the rules proposed in this disclosure and / or the related parameter configuration values ​​can be configured (differently or independently) for sidelink logical channels / logical channel groups (or Uu logical channels or Uu logical channel groups). For example, the applicability of the rules proposed in this disclosure and / or the related parameter configuration values ​​can be configured (differently or independently) with the initial transmission resource selection. For example, the applicability of the rules proposed in this disclosure and / or the related parameter configuration values ​​can be configured (differently or independently) with the retransmission resource selection. For example, depending on whether PUCCH configuration is supported (e.g., with or without PUCCH resources configured), the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured to apply for each resource pool (e.g., a resource pool with or without a PSFCH) (differently or independently). For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured to apply for each service / packet type (differently or independently). For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured to apply for each service / packet priority (differently or independently). For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured to apply for each QoS requirement (e.g., URLLC / EMBB service, reliability, latency) (differently or independently). For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured to apply for each PQI (differently or independently). For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured to apply for each PFI (differently or independently). For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured (differently or independently) for each broadcast type (e.g., unicast, multicast, broadcast). For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured (differently or independently) for each (resource pool) congestion level (e.g., CBR). For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured (differently or independently) for each SL HARQ feedback option (e.g., NACK feedback only, ACK / NACK feedback). For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured for HARQ feedback-enabled MAC PDU transmissions to apply the rules and / or related parameter configuration values ​​proposed in this disclosure.For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured for MAC PDU transmissions disabled for HARQ feedback. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured for whether PUCCH-based SL HARQ feedback reporting operations are configured. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured for preemption or depending on whether preemption-based resource reselection is performed. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured for re-evaluation or depending on whether re-evaluation-based resource reselection is performed. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured for each (L2 or L1) (source and / or destination) identifier. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured (differently or independently) for each (L2 or L1) (combination of source ID and destination ID) identifier. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured (differently or independently) for each (L2 or L1) (combination of source ID and destination ID pair and broadcast type) identifier. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured (differently or independently) for each direction of the source layer ID and destination layer ID pair. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be configured (differently or independently) for each PC5 RRC connection / link. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured depending on whether SL DRX is implemented. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured depending on whether SL DRX is supported. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured for each SL mode type (e.g., resource allocation mode 1 or resource allocation mode 2). For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured for the implementation of (non-)periodic resource reservation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (or differently or independently) configured for each 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).

[0140] The proposals and whether to apply the rules (and / or related parameter configuration values) proposed in this disclosure may also be applied to millimeter-wave SL operations.

[0141] According to various embodiments of this disclosure, when a UE selects a carrier during carrier selection based on CBR measurements of resource pools included in the carrier, the UE can reuse the resource pool on which the CBR measurements were performed as a resource pool for creating a license. In this case, for example, when the UE creates a license to perform transmission based on the selected carrier, the overhead of the UE can be reduced because the process associated with CBR measurements of resource pools can be skipped. That is, for example, if the UE determines the resource pool associated with a CBR measurement value less than the CBR threshold by performing CBR measurements of resource pools during carrier selection and reusing the corresponding resource pool as a resource pool for creating a license, the overhead of the UE can be reduced and the power of the UE can be used efficiently because CBR measurements of other resource pools included in the carrier can be omitted. Alternatively, for example, since the UE can create a license for transmission based on a resource pool that guarantees CBR, the created license can be used to guarantee the quality associated with transmission performed based on the selected carrier.

[0142] Figure 11 A method for performing wireless communication by a first device based on an embodiment of the present disclosure is shown. Figure 11 The implementation methods can be combined with various implementation methods of this disclosure.

[0143] Reference Figure 11 In step S1110, the first device can obtain configuration information related to multiple carriers. In step S1120, the first device can perform a channel busy rate (CBR) measurement for a first resource pool included in the multiple carriers. In step S1130, the first device can select a first carrier based on the CBR measurement value associated with the first resource pool being less than a threshold. In step S1140, the first device can determine the first resource pool used for CBR measurement as a resource pool for creating sidelink (SL) licenses based on the selection of the first carrier.

[0144] For example, the first resource pool used for CBR measurements can be reused as a resource pool created for SL licensing.

[0145] For example, based on whether Hybrid Automatic Repeat Request (HARQ) feedback for the logical channel associated with the first carrier is enabled or disabled, the first resource pool, which is included among the multiple resource pools in the first carrier, can be determined as the resource pool for CBR measurement.

[0146] For example, based on the HARQ feedback for the logical channel associated with the first carrier being enabled, a resource pool with physical side link feedback channel (PSFCH) resources among the multiple resource pools included in the first carrier can be selected as the first resource pool.

[0147] For example, based on the fact that HARQ feedback for the logical channel associated with the first carrier is disabled, a resource pool that is not configured with PSFCH resources among the multiple resource pools included in the first carrier can be selected as the first resource pool.

[0148] For example, the first carrier can be selected based on the lowest CBR measurement among the CBR measurements taken for each resource pool in at least one resource pool in each of the multiple carriers, which is associated with the first resource pool included in the first carrier.

[0149] For example, the first and second carriers can be selected based on the selection of one or more carriers, wherein the one or more carriers include resource pools associated with CBR measurements in ascending order from the lowest CBR measurement among CBR measurements measured for each resource pool in at least one resource pool in each of the multiple carriers. For example, carrier reselection can be triggered based on the fact that, when determining the resource pool for the creation of SL licenses, the CBR measurement for each resource pool included in at least one resource pool in the second carrier is greater than a threshold. For example, a first resource pool included in the first carrier other than the second carrier can be determined as the resource pool for the creation of SL licenses based on the fact that, after selecting the first and second carriers, the CBR measurement for each resource pool included in at least one resource pool in the second carrier is greater than a threshold.

[0150] For example, based on the association between SL licenses and non-periodic resource reservations, the first resource pool used for CBR measurements can be identified as the resource pool used for the creation of SL licenses.

[0151] For example, at least one of logical channel data, a medium access control (MAC) control element (CE), a PC5-Radio Resource Control (RRC) message, or a PC5-S message can be transmitted to the second device via the first carrier based on SL permission.

[0152] For example, based on the fact that a CBR measurement for a first resource pool is performed at a lower layer of the first device and the CBR measurement value associated with the first resource pool is available, a higher layer of the first device can determine the CBR measurement value associated with the first resource pool, which is one of a plurality of resource pools included in the first carrier, as the CBR measurement value of the first carrier. For example, the lower layer of the first device may be the physical (PHY) layer of the first device. And, for example, the higher layer of the first device may be the media access control (MAC) layer of the first device.

[0153] The proposed method can be applied to apparatuses according to various embodiments of this disclosure. First, the processor 102 of the first apparatus 100 can control the transceiver 106 to obtain configuration information associated with multiple carriers. Furthermore, the processor 102 of the first apparatus 100 can perform a channel busy rate (CBR) measurement for a first resource pool within a first carrier included among the multiple carriers. Furthermore, the processor 102 of the first apparatus 100 can select a first carrier based on a CBR measurement value associated with the first resource pool being less than a threshold. Furthermore, the processor 102 of the first apparatus 100 can determine the first resource pool used for CBR measurement as a resource pool for creating sidelink (SL) licenses based on the selection of the first carrier.

[0154] According to one embodiment of this disclosure, a first apparatus configured to perform wireless communication is provided. The first apparatus may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the first apparatus to perform operations including: obtaining configuration information associated with a plurality of carriers; performing a channel busy rate (CBR) measurement for a first resource pool included in the plurality of carriers; selecting a first carrier based on a CBR measurement value associated with the first resource pool being less than a threshold; and determining the first resource pool used for the CBR measurement as a resource pool for the creation of sidelink (SL) licenses based on the selection of the first carrier.

[0155] According to one embodiment of this disclosure, a processing apparatus configured to control a first device is provided. The processing apparatus may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the first device to perform operations including: obtaining configuration information associated with a plurality of carriers; performing a channel busy rate (CBR) measurement for a first resource pool included in the plurality of carriers; selecting a first carrier based on a CBR measurement value associated with the first resource pool being less than a threshold; and determining the first resource pool used for the CBR measurement as a resource pool for the creation of a sidelink (SL) license based on the selection of the first carrier.

[0156] According to one embodiment of this disclosure, a non-transitory computer-readable storage medium for recording instructions is provided. For example, the instructions, upon execution, cause a first device to perform operations including: obtaining configuration information associated with a plurality of carriers; performing a channel busy rate (CBR) measurement for a first resource pool included in the plurality of carriers; selecting a first carrier based on a CBR measurement value associated with the first resource pool being less than a threshold; and determining the first resource pool used for the CBR measurement as a resource pool for creating a sidelink (SL) license based on the selection of the first carrier.

[0157] Figure 12 A method for performing wireless communication by a second device based on an embodiment of the present disclosure is shown. Figure 12 The implementation methods can be combined with various implementation methods of this disclosure.

[0158] Reference Figure 12 In step S1210, the second device can obtain configuration information related to multiple carriers. In step S1220, the second device can receive at least one of control information or data from the first device based on a first carrier among the multiple carriers. For example, the first carrier may be a carrier selected based on a channel busy rate (CBR) measurement associated with a first resource pool included in the multiple carriers being less than a threshold. And, for example, a sidelink (SL) license associated with the reception of at least one of the control information or data may be an SL license created based on the first resource pool used for CBR measurement being determined as a resource pool for the creation of the SL license.

[0159] The proposed method can be applied to apparatuses according to various embodiments of this disclosure. First, the processor 202 of the second apparatus 200 can control the transceiver 206 to obtain configuration information associated with multiple carriers. Furthermore, the processor 202 of the second apparatus 200 can receive at least one of control information or data from the first apparatus based on a first carrier among the multiple carriers. For example, the first carrier may be a carrier selected based on a channel busy rate (CBR) measurement associated with a first resource pool included in the multiple carriers being less than a threshold. And, for example, a sidelink (SL) license associated with the reception of at least one of the control information or data may be an SL license created based on the first resource pool used for CBR measurement being determined as a resource pool for the creation of the SL license.

[0160] According to one embodiment of this disclosure, a second device configured to perform wireless communication is provided. The second device may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the second device to perform operations including: obtaining configuration information associated with a plurality of carriers; and receiving at least one of control information or data from a first device based on a first carrier among the plurality of carriers. For example, the first carrier may be a carrier selected based on a channel busy rate (CBR) measurement associated with a first resource pool included in the plurality of carriers being less than a threshold. Furthermore, for example, a sidelink (SL) license associated with the reception of at least one of the control information or data may be an SL license created based on the first resource pool used for CBR measurement being determined as a resource pool for the creation of the SL license.

[0161] According to one embodiment of this disclosure, a processing apparatus configured to control a second device is provided. The processing apparatus may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, cause the second device to perform an operation including: obtaining configuration information associated with a plurality of carriers; and receiving at least one of control information or data from a first device based on a first carrier among the plurality of carriers. For example, the first carrier may be a carrier selected based on a channel busy rate (CBR) measurement associated with a first resource pool included in the plurality of carriers being less than a threshold. Furthermore, for example, a sidelink (SL) license associated with the reception of at least one of the control information or data may be an SL license created based on the first resource pool used for CBR measurement being determined as a resource pool for the creation of the SL license.

[0162] According to one embodiment of this disclosure, a non-transitory computer-readable storage medium for recording instructions is provided. For example, the instructions, upon execution, cause a second device to perform operations including: obtaining configuration information associated with a plurality of carriers; and receiving at least one of control information or data from a first device based on a first carrier among the plurality of carriers. For example, the first carrier may be a carrier selected based on a channel busy rate (CBR) measurement associated with a first resource pool included in the plurality of carriers being less than a threshold. Furthermore, for example, a sidelink (SL) license associated with the reception of at least one of the control information or data may be an SL license created based on the first resource pool used for CBR measurement being determined as a resource pool for the creation of the SL license.

[0163] The various embodiments disclosed herein can be combined with each other.

[0164] The following will describe devices to which various embodiments of the present disclosure may be applied.

[0165] The various descriptions, functions, processes, proposals, methods and / or operating procedures described in this document can be applied to, but are not limited to, various fields requiring wireless communication / connectivity between devices (e.g., 5G).

[0166] The following description will be given in more detail with reference to the accompanying drawings. In the following drawings / description, unless otherwise described, the same reference numerals may denote the same or corresponding hardware blocks, software blocks, or functional blocks.

[0167] Figure 13 A communication system 1 based on an embodiment of the present disclosure is shown. Figure 13 The implementation methods can be combined with various implementation methods of this disclosure.

[0168] Reference Figure 13 The communication system 1, which applies various embodiments of this disclosure, includes a wireless device, a base station (BS), and a network. Herein, a wireless device refers to a device that performs communication using a radio access technology (RAT) (e.g., 5G New RAT (NR) or Long Term Evolution (LTE)) and may be referred to as a communication / radio / 5G device. Wireless devices may include, but are not limited to, robots 100a, vehicles (100b-1, 100b-2), extended reality (XR) devices (100c), handheld devices 100d, home appliances 100e, Internet of Things (IoT) devices 100f, and artificial intelligence (AI) devices / servers 400. For example, a vehicle may include a vehicle with wireless communication capabilities, an autonomous vehicle, and a vehicle capable of performing vehicle-to-vehicle communication. Herein, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). XR devices can include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices and can take the form of head-up displays (HMDs), head-up displays (HUDs) installed in vehicles, televisions, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, robots, etc. Handheld devices can include smartphones, smart tablets, wearable devices (e.g., smartwatches or smart glasses) and computers (e.g., laptops). Home appliances can include TVs, refrigerators, and washing machines. IoT devices can include sensors and smart meters. For example, the BS and network can be implemented as wireless devices, and a particular wireless device (200a) can operate as a BS / network node relative to other wireless devices.

[0169] In addition to LTE, NR, and 6G, the wireless communication technologies implemented in the wireless devices 100a to 100f of this disclosure may also include narrowband Internet of Things (IoT) for low-power communication. In this case, for example, NB-IoT technology may be an example of low-power wide-area network (LPWAN) technology and may be implemented as a standard such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the aforementioned names. Alternatively or additionally, the wireless communication technologies implemented in the wireless devices 100a to 100f of this disclosure may perform communication based on LTE-M technology. In this case, as an example, LTE-M technology may be an example of LPWAN and may be referred to by various names including enhanced machine-type communication (eMTC). For example, LTE-M technology may be implemented as at least one of various standards such as 1) LTE Cat 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE machine-type communication, and / or 7) LTE M, and is not limited to the aforementioned names. Alternatively or additionally, the wireless communication technology implemented in the wireless devices 100a to 100f of this disclosure may include at least one of Bluetooth, Low Power Wide Area Network (LPWAN), and ZigBee for low power communication, and is not limited to the names mentioned above. As an example, ZigBee technology may generate personal area networks (PANs) related to low / low power digital communication based on various standards including IEEE 802.15.4, and may be referred to by various names.

[0170] Wireless devices 100a to 100f can connect to network 300 via BS 200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can connect to AI server 400 via network 300. Network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although wireless devices 100a to 100f can communicate with each other via BS 200 / network 300, wireless devices 100a to 100f can perform direct communication with each other (e.g., sidelink communication) without going through the BS / network. For example, vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). IoT devices (e.g., sensors) can perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0171] Wireless communication / connections 150a, 150b, or 150c can be established between wireless devices 100a to 100f / BS 200 or BS200 / BS 200. Here, the wireless communication / connection can be established via various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication), or inter-BS communication (e.g., relay, access backhaul integration (IAB)). The wireless devices and BS / wireless devices can transmit / receive radio signals to / from each other via wireless communication / connections 150a and 150b. For example, wireless communication / connections 150a and 150b can transmit / receive signals via various physical channels. For this purpose, at least a portion of various configuration information configuration processes, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation processes for transmitting / receiving radio signals can be performed based on various proposals of this disclosure.

[0172] Figure 14 A wireless device based on an embodiment of the present disclosure is shown. Figure 14 The implementation methods can be combined with various implementation methods of this disclosure.

[0173] Reference Figure 14 The first wireless device 100 and the second wireless device 200 can transmit radio signals via various RATs (e.g., LTE and NR). In this document, {first wireless device 100 and second wireless device 200} can correspond to... Figure 13 The {Wireless Device 100x and BS 200} and / or {Wireless Device 100x and Wireless Device 100x}.

[0174] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may additionally include one or more transceivers 106 and / or one or more antennas (antenna elements) 108. The processors 102 may control the memories 104 and / or the transceivers 106, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processors 102 may process information in the memories 104 to generate a first information / signal, and then transmit a radio signal including the first information / signal via the transceivers 106. The processors 102 may receive a radio signal including a second information / signal via the transceivers 106, and then store the information obtained by processing the second information / signal in the memories 104. The memories 104 may be connected to the processors 102 and may store various information related to the operation of the processors 102. For example, one or more memories 104 may store software code including commands for performing part or all of the processing controlled by one or more processors 102, or for performing the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. Here, one or more processors 102 and one or more memories 104 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). One or more transceivers 106 may be connected to one or more processors 102 and transmit and / or receive radio signals via one or more antennas 108. Each transceiver 106 may include a transmitter and / or a receiver. One or more transceivers 106 may be used interchangeably with one or more radio frequency (RF) units. In this disclosure, a wireless device may represent a communication modem / circuit / chip.

[0175] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may additionally include one or more transceivers 206 and / or one or more antennas 208. The processors 202 may control the memories 204 and / or the transceivers 206, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processors 202 may process information in the memories 204 to generate a third message / signal, and subsequently transmit a radio signal including the third message / signal via the transceivers 206. The processors 202 may receive a radio signal including a fourth message / signal via the transceivers 106, and then store the information obtained by processing the fourth message / signal in the memories 204. The memories 204 may be connected to the processors 202 and may store various information relating to the operation of the processors 202. For example, one or more memories 204 may store software code including commands for performing part or all of the processing controlled by one or more processors 202, or for performing the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document. Here, one or more processors 202 and one or more memories 204 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). One or more transceivers 206 may be connected to one or more processors 202 and transmit and / or receive radio signals via one or more antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. One or more transceivers 206 may be used interchangeably with one or more RF units. In this disclosure, a wireless device may represent a communication modem / circuit / chip.

[0176] The hardware elements of wireless devices 100 and 200 will now be described in more detail. One or more protocol layers may be implemented, but are not limited to, by one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed in this document. One or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed in this document, and provide the generated signals to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive signals (e.g., baseband signals) from one or more transceivers 106 and 206 and acquire PDUs, SDUs, messages, control information, data, or information in accordance with the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document.

[0177] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field-programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be implemented using firmware or software, and such firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to perform the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be included in one or more processors 102 and 202 or stored in one or more memories 104 and 204, thereby being driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be implemented using software or firmware in the form of code, commands, and / or command sets.

[0178] One or more memories 104 and 204 may be connected to one or more processors 102 and 202, and may store various types of data, signals, messages, information, programs, code, instructions, and / or commands. One or more memories 104 and 204 may be composed of read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. One or more memories 104 and 204 may be located internally and / or externally to one or more processors 102 and 202. One or more memories 104 and 204 may be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0179] One or more transceivers 106 and 206 may transmit user data, control information, and / or radio signals / channels mentioned in the methods and / or operating procedures of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operating procedures disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and may transmit and receive radio signals. For example, one or more processors 102 and 202 may perform control such that one or more transceivers 106 and 206 may transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may perform control such that one or more transceivers 106 and 206 may receive user data, control information, or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operational procedures disclosed in this document through one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert received radio signals / channels, etc., from RF band signals to baseband signals for processing using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert the processed user data, control information, radio signals / channels, etc., from baseband signals to RF band signals. For this purpose, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0180] Figure 15 A signal processing circuit for transmitting signals based on an embodiment of the present disclosure is shown. Figure 15 The implementation methods can be combined with various implementation methods of this disclosure.

[0181] Reference Figure 15 The signal processing circuit 1000 may include a scrambler 1010, a modulator 1020, a layer mapper 1030, a pre-encoder 1040, a resource mapper 1050, and a signal generator 1060. It can perform... Figure 15 The operation / functions, but not limited to Figure 14 The processors (102, 202) and / or transceivers (106, 206) can be used. Figure 14 Implemented by processors (102, 202) and / or transceivers (106, 206) Figure 15 Hardware components. For example, it can be achieved through... Figure 14 The processors (102, 202) implement boxes 1010 to 1060. Alternatively, they can be implemented using... Figure 14 The processors (102, 202) implement boxes 1010 to 1050, and can be used to... Figure 14 The transceivers (106, 206) are used to implement the 1060 box.

[0182] Can be via Figure 15 The signal processing circuit 1000 converts codewords into radio signals. In this document, a codeword is a sequence of encoded bits for an information block. The information block may include a transport block (e.g., a UL-SCH transport block, a DL-SCH transport block). Radio signals can be transmitted via various physical channels (e.g., PUSCH and PDSCH).

[0183] Specifically, the codeword can be converted into a scrambled bit sequence by scrambler 1010. The scrambling sequence used for scrambling can be generated based on an initial value, which may include the ID information of the wireless device. The scrambled bit sequence can be modulated into a modulation symbol sequence by modulator 1020. The modulation scheme may include pi / 2-binary phase shift keying (pi / 2-BPSK), m-phase shift keying (m-PSK), and m-quadrature amplitude modulation (m-QAM). The complex modulation symbol sequence can be mapped to one or more transmission layers by layer mapper 1030. The modulation symbol of each transmission layer can be mapped (pre-encoded) to one or more corresponding antenna ports by pre-encoder 1040. The output z of pre-encoder 1040 can be obtained by combining the output y of layer mapper 1030 with N The M precoding matrix W is obtained by multiplying the two matrices. Here, N is the number of antenna ports, and M is the number of transmission layers. The precoder 1040 can perform precoding after performing transform precoding (e.g., DFT) for complex modulation symbols. Alternatively, the precoder 1040 can perform precoding without performing transform precoding.

[0184] Resource mapper 1050 maps modulation symbols for each antenna port to time-frequency resources. Time-frequency resources may include multiple symbols in the time domain (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) and multiple subcarriers in the frequency domain. Signal generator 1060 can generate radio signals from the mapped modulation symbols, and the generated radio signals can be transmitted to other devices via each antenna. For this purpose, signal generator 1060 may include an inverse fast Fourier transform (IFFT) module, a cyclic prefix (CP) inserter, a digital-to-analog converter (DAC), and an up-converter.

[0185] Can be with Figure 15 The signal processing procedures (1010~1060) are configured in reverse order for the signal processing procedures used to receive signals in a wireless device. For example, a wireless device (e.g., Figure 14 The receiver (e.g., 100, 200) can receive radio signals from the outside via the antenna port / transceiver. The received radio signals can be converted into baseband signals using a signal recovery unit. For this purpose, the signal recovery unit may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a Fast Fourier Transform (FFT) module. Next, the baseband signals can be recovered into codewords through a resource demapping process, a post-encoding process, a demodulation processor, and a descrambling process. The codewords can be recovered into the original information blocks through decoding. Therefore, the signal processing circuitry (not illustrated) used for receiving signals may include a signal recovery unit, a resource demapping unit, a post-encoder, a demodulator, a descrambler, and a decoder.

[0186] Figure 16 Another example of a wireless device based on an implementation of this disclosure is shown. The wireless device can be implemented in various forms depending on the use case / service (see reference). Figure 13 ). Figure 16 The implementation methods can be combined with various implementation methods of this disclosure.

[0187] Reference Figure 16 The wireless devices (100, 200) can correspond to Figure 14 The wireless devices (100, 200) can be configured using various elements, components, units / parts, and / or modules. For example, each of the wireless devices (100, 200) may include a communication unit 110, a control unit 120, a memory unit 130, and an additional component 140. The communication unit may include a communication circuit 112 and one or more transceivers 114. For example, the communication circuit 112 may include... Figure 14 One or more processors (102, 202) and / or one or more memories (104, 204). For example, transceiver 114 may include one or more transceivers. Figure 14The device comprises one or more transceivers (106, 206) and / or one or more antennas (108, 208). Control unit 120 is electrically connected to communication unit 110, memory unit 130, and add-on components 140, and controls the overall operation of the wireless device. For example, control unit 120 may control the electrical / mechanical operation of the wireless device based on programs / code / commands / information stored in memory unit 130. Control unit 120 may transmit information stored in memory unit 130 to an external source (e.g., other communication devices) via communication unit 110 through a wireless / wired interface, or store information received from an external source (e.g., other communication devices) via communication unit 110 through a wireless / wired interface in memory unit 130.

[0188] The add-on component 140 can be configured in various ways depending on the type of wireless device. For example, the add-on component 140 may include at least one of a power unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device can be implemented in, but is not limited to, the following forms: robot ( Figure 13 100a), vehicles ( Figure 13 100b-1 and 100b-2), XR device ( Figure 13 100c), handheld device ( Figure 13 100d), home appliances ( Figure 13 100e), IoT devices ( Figure 13 100f), digital broadcasting terminals, holographic devices, public safety devices, MTC devices, medical devices, fintech devices (or financial devices), security devices, climate / environmental devices, AI servers / devices ( Figure 13 400), BS ( Figure 13 (e.g., 200), network nodes, etc. Depending on the use case / service, wireless devices can be used in mobile or fixed locations.

[0189] exist Figure 16In the wireless devices (100, 200), all various elements, components, units / parts, and / or modules can be connected to each other via wired interfaces, or at least partially connected wirelessly via communication unit 110. For example, in each of the wireless devices (100, 200), control unit 120 and communication unit 110 can be connected via a wired connection, and control unit 120 and first units (e.g., 130, 140) can be wirelessly connected via communication unit 110. Each element, component, unit / part, and / or module within the wireless devices (100, 200) may also include one or more elements. For example, control unit 120 can be constructed using a collection of one or more processors. As an example, control unit 120 can be constructed using a collection of communication control processors, application processors, electronic control units (ECUs), graphics processing units, and memory control processors. As another example, memory unit 130 can be constructed using random access memory (RAM), dynamic RAM (DRAM), read-only memory (ROM), flash memory, volatile memory, non-volatile memory, and / or combinations thereof.

[0190] The implementation will be described in detail below with reference to the accompanying drawings. Figure 16 Examples.

[0191] Figure 17 A handheld device based on an embodiment of the present disclosure is illustrated. The handheld device may include a smartphone, smartpad, wearable device (e.g., a smartwatch or smart glasses), or portable computer (e.g., a laptop). The handheld device may be referred to as a mobile station (MS), user terminal (UT), mobile subscriber station (MSS), subscriber station (SS), advanced mobile station (AMS), or wireless terminal (WT). Figure 17 The implementation methods can be combined with various implementation methods of this disclosure.

[0192] Reference Figure 17 The handheld 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 I / O unit 140c. The antenna unit 108 may be configured as part of the communication unit 110. Blocks 110 to 130 / 140a to 140c respectively correspond to... Figure 16 The frame is 110 to 130 / 140.

[0193] Communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from other wireless devices or BSs. Control unit 120 can perform various operations by controlling the constituent elements of handheld device 100. Control unit 120 may include an application processor (AP). Memory unit 130 can store data / parameters / programs / codes / commands required to drive handheld device 100. Memory unit 130 can store input / output data / information. Power supply unit 140a can supply power to handheld device 100 and includes wired / wireless charging circuitry, a battery, etc. Interface unit 140b can support connection of handheld device 100 to other external devices. Interface unit 140b may include various ports (e.g., audio I / O ports and video I / O ports) for connecting to external devices. I / O unit 140c can input or output user-input video information / signals, audio information / signals, data, and / or information. I / O unit 140c may include a camera, microphone, user input unit, display unit 140d, speaker, and / or haptic module.

[0194] For example, in the case of data communication, I / O unit 140c can acquire user input information / signals (e.g., touch, text, voice, image, or video), and the acquired information / signals can be stored in memory unit 130. Communication unit 110 can convert the information / signals stored in memory into radio signals and transmit the converted radio signals directly to other wireless devices or to the BS. Communication unit 110 can receive radio signals from other wireless devices or the BS, and then recover the received radio signals into the original information / signals. The recovered information / signals can be stored in memory unit 130 and can be output in various types (e.g., text, voice, image, video, or haptic feedback) through I / O unit 140.

[0195] Figure 18 Vehicles or autonomous vehicles based on embodiments of this disclosure are shown. Vehicles or autonomous vehicles can be implemented using mobile robots, automobiles, trains, manned / unmanned aerial vehicles (AVs), ships, etc. Figure 18 The implementation methods can be combined with various implementation methods of this disclosure.

[0196] Reference Figure 18 The vehicle or autonomous vehicle 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a drive unit 140a, a power supply unit 140b, a sensor unit 140c, and an autonomous driving unit 140d. The antenna unit 108 may be configured as part of the communication unit 110. Blocks 110 / 130 / 140a to 140d correspond to... Figure 16 The frame size is 110 / 130 / 140.

[0197] Communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from external devices such as other vehicles, BS (e.g., gNB and roadside units), and servers. Control unit 120 can perform various operations by controlling elements of the vehicle or autonomous vehicle 100. Control unit 120 may include electronic control unit (ECU). Drive unit 140a can cause the vehicle or autonomous vehicle 100 to move on the road. Drive unit 140a may include engine, motor, transmission system, wheels, brakes, steering mechanism, etc. Power supply unit 140b can supply power to the vehicle or autonomous vehicle 100 and may include wired / wireless charging circuitry, battery, etc. Sensor unit 140c can acquire vehicle status, external environment information, user information, etc. Sensor unit 140c may include inertial measurement unit (IMU) sensors, collision sensors, wheel sensors, speed sensors, slope sensors, weight sensors, heading sensors, position modules, vehicle forward / reverse sensors, battery sensors, fuel sensors, tire sensors, steering sensors, temperature sensors, humidity sensors, ultrasonic sensors, lighting sensors, pedal position sensors, etc. Autonomous driving unit 140d can implement technologies for maintaining the vehicle's lane, technologies for automatically adjusting speed (e.g., adaptive cruise control), technologies for autonomously driving along a defined path, and technologies for automatically setting a route when a destination is set, etc.

[0198] For example, communication unit 110 can receive map data, traffic information data, etc., from an external server. Autonomous driving unit 140d can generate autonomous driving paths and driving plans from the acquired data. Control unit 120 can control drive unit 140a, enabling the vehicle or autonomous vehicle 100 to move along the autonomous driving path according to the driving plan (e.g., speed / direction control). During autonomous driving, communication unit 110 can periodically or non-periodically acquire the latest traffic information data from an external server and acquire surrounding traffic information data from neighboring vehicles. During autonomous driving, sensor unit 140c can acquire vehicle status and / or surrounding environment information. Autonomous driving unit 140d can update the autonomous driving path and driving plan based on newly acquired data / information. Communication unit 110 can transmit information about vehicle location, autonomous driving path, and / or driving plan to an external server. The external server can predict traffic information data using AI technology, etc., based on information collected from the vehicle or autonomous vehicle, and provide the predicted traffic information data to the vehicle or autonomous vehicle.

[0199] The claims in this specification can be combined in various ways. For example, technical features in the method claims of this specification can be combined to implement or perform in a device, and technical features in the device claims can be combined to implement or perform in a method. Additionally, technical features in one or more method claims and one or more device claims can be combined to implement or perform in a device.

Claims

1. A method for performing wireless communication by a first device, the method comprising the steps of: Obtain configuration information related to multiple carriers; Channel busy rate (CBR) measurement is performed for the first resource pool in the first carrier included among the plurality of carriers; The first carrier is selected based on the CBR measurement value associated with the first resource pool being less than a threshold; and Based on the selection of the first carrier, the first resource pool used for the CBR measurement is determined as the resource pool for the creation of side link (SL) licenses.

2. The method according to claim 1, wherein, The first resource pool used for the CBR measurement is reused as the resource pool created for the SL license.

3. The method according to claim 1, wherein, Based on whether Hybrid Automatic Repeat Request (HARQ) feedback for the logical channel associated with the first carrier is enabled or disabled, the first resource pool, which is included among the multiple resource pools in the first carrier, is determined as the resource pool for the CBR measurement.

4. The method according to claim 1, wherein, Based on the HARQ feedback being enabled for the logical channel associated with the first carrier, a resource pool with Physical Side Link Feedback Channel (PSFCH) resources among the multiple resource pools included in the first carrier is selected as the first resource pool.

5. The method according to claim 1, wherein, Since HARQ feedback for the logical channel associated with the first carrier is disabled, a resource pool with PSFCH resources or a resource pool without PSFCH resources among the multiple resource pools included in the first carrier is selected as the first resource pool.

6. The method according to claim 1, wherein, The first carrier is selected based on the lowest CBR measurement among those measured for each resource pool in at least one resource pool in each of the plurality of carriers, which is associated with the first resource pool included in the first carrier.

7. The method according to claim 1, wherein, The first carrier and the second carrier are selected based on the selection of one or more carriers, which include resource pools associated with CBR measurements in ascending order from the lowest CBR measurement among CBR measurements measured for each resource pool in at least one resource pool included in each of the plurality of carriers.

8. The method according to claim 7, wherein, Carrier reselection is triggered when the CBR measurement value measured for each resource pool included in at least one resource pool in the second carrier is greater than the threshold when the resource pool created for the SL license is determined.

9. The method according to claim 7, wherein, Based on the fact that, after selecting the first carrier and the second carrier, the CBR measurement value measured for each resource pool in at least one resource pool included in the second carrier is greater than the threshold, the first resource pool included in the first carrier other than the second carrier is determined as the resource pool created for the SL license.

10. The method according to claim 1, wherein, Based on the association between the SL license and non-periodic resource reservation, the first resource pool used for the CBR measurement is determined as the resource pool created for the SL license.

11. The method according to claim 1, wherein, Based on the SL permission, at least one of logical channel data, a medium access control (MAC) control element (CE), a PC5-Radio Resource Control (RRC) message, or a PC5-S message is transmitted to the second device via the first carrier.

12. The method according to claim 1, wherein, Based on the fact that the CBR measurement for the first resource pool is performed at the lower layer of the first device and the CBR measurement value associated with the first resource pool is available, the higher layer of the first device determines the CBR measurement value associated with the first resource pool among the multiple resource pools included in the first carrier as the CBR measurement value of the first carrier.

13. The method according to claim 12, wherein, The lower layer of the first device is the physical (PHY) layer of the first device, and The higher layer of the first device is the Media Access Control (MAC) layer of the first device.

14. A first means adapted to perform wireless communication, the first means comprising: At least one transceiver; At least one processor; as well as At least one memory, connected to the at least one processor and storing instructions that, upon execution, cause the first device to perform operations, the operations including: Obtain configuration information related to multiple carriers; Channel busy rate (CBR) measurement is performed for the first resource pool in the first carrier included among the plurality of carriers; The first carrier is selected based on the CBR measurement value associated with the first resource pool being less than a threshold; and Based on the selection of the first carrier, the first resource pool used for the CBR measurement is determined as the resource pool for the creation of side link (SL) licenses.

15. A processing apparatus suitable for controlling a first device to perform wireless communication, the processing apparatus comprising: At least one processor; as well as At least one memory, connected to the at least one processor and storing instructions that, upon execution, cause the at least one processor to perform operations, the operations including: Obtain configuration information related to multiple carriers; Channel busy rate (CBR) measurement is performed for the first resource pool in the first carrier included among the plurality of carriers; The first carrier is selected based on the CBR measurement value associated with the first resource pool being less than a threshold; and Based on the selection of the first carrier, the first resource pool used for the CBR measurement is determined as the resource pool for the creation of side link (SL) licenses.

16. A non-transitory computer-readable storage medium for recording instructions, said instructions, when executed, causing a first means to perform an operation, said operation comprising: Obtain configuration information related to multiple carriers; Channel busy rate (CBR) measurement is performed for the first resource pool in the first carrier included among the plurality of carriers; The first carrier is selected based on the CBR measurement value associated with the first resource pool being less than a threshold; and Based on the selection of the first carrier, the first resource pool used for the CBR measurement is determined as the resource pool for the creation of side link (SL) licenses.

17. A method for performing wireless communication by a second device, the method comprising the steps of: Obtain configuration information related to multiple carriers; as well as Based on a first carrier among the plurality of carriers, at least one of control information or data is received from the first device. The first carrier is selected based on a channel busy rate (CBR) measurement associated with a first resource pool included in the plurality of carriers being less than a threshold. The side link (SL) license associated with the reception of at least one of the control information or the data is created based on the first resource pool for CBR measurement being determined as the resource pool for the creation of the SL license.

18. A second means adapted to perform wireless communication, the second means comprising: At least one transceiver; At least one processor; as well as At least one memory, connected to the at least one processor and storing instructions that, upon execution, cause the second device to perform operations, the operations including: Obtain configuration information related to multiple carriers; and Based on a first carrier among the plurality of carriers, at least one of control information or data is received from the first device. The first carrier is selected based on a channel busy rate (CBR) measurement associated with a first resource pool included in the plurality of carriers being less than a threshold. The side link (SL) license associated with the reception of at least one of the control information or the data is created based on the first resource pool for CBR measurement being determined as the resource pool for the creation of the SL license.

19. A processing apparatus suitable for controlling a second device to perform wireless communication, the processing apparatus comprising: At least one processor; as well as At least one memory, connected to the at least one processor and storing instructions that, upon execution, cause the at least one processor to perform operations, the operations including: Obtain configuration information related to multiple carriers; and Based on a first carrier among the plurality of carriers, at least one of control information or data is received from the first device. The first carrier is selected based on a channel busy rate (CBR) measurement associated with a first resource pool included in the plurality of carriers being less than a threshold. The side link (SL) license associated with the reception of at least one of the control information or the data is created based on the first resource pool for CBR measurement being determined as the resource pool for the creation of the SL license.

20. A non-transitory computer-readable storage medium for recording instructions, said instructions, when executed, causing a second means to perform an operation, said operation comprising: Obtain configuration information related to multiple carriers; as well as Based on a first carrier among the plurality of carriers, at least one of control information or data is received from the first device. The first carrier is selected based on a channel busy rate (CBR) measurement associated with a first resource pool included in the plurality of carriers being less than a threshold. The side link (SL) license associated with the reception of at least one of the control information or the data is created based on the first resource pool for CBR measurement being determined as the resource pool for the creation of the SL license.

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