Method and apparatus for performing beam-based communication in wireless communication system

Abstract

A method for a first device to perform wireless communication and a device supporting the same are provided. The method may comprise the steps of: obtaining information related to a plurality of occasions for a physical feedback channel; transmitting control information for scheduling the physical shared channel to the second device on the physical control channel; and transmitting the data to the second device on the physical shared channel. For example, a physical shared channel may be associated with a plurality of opportunities for a physical feedback channel. For example, the physical feedback channel may be monitored based on multiple spatial filters. For example, each opportunity of a plurality of opportunities for a physical feedback channel may be associated with one of a corresponding plurality of spatial filters.

Description

Technical Field

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

[0002] 5G NR is the successor to LTE and a new type of mobile communication system with features such as high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, including low-frequency bands below 1 GHz, mid-frequency bands between 1 GHz and 10 GHz, and high-frequency (millimeter wave) bands above 24 GHz.

[0003] 6G (wireless communication) systems aim to achieve goals such as (i) very high data rates per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) reduced power consumption of battery-less IoT devices, (vi) ultra-reliable connectivity, and (vii) networked intelligence with machine learning capabilities. The vision for 6G systems can include 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 shows the requirements for 6G systems.

[0004] [Table 1]

[0005] Summary of the Invention

[0006] Technical issues

[0007] This disclosure provides methods and apparatus for effectively providing services in wireless communication systems. Specifically, this disclosure provides methods and apparatus for beam-based communication.

[0008] Technical solution

[0009] Based on the implementation, a method for performing wireless communication by a first device can be provided. The method may include the steps of: obtaining information related to multiple timings for a physical feedback channel; transmitting control information for scheduling a physical shared channel to a second device on a physical control channel; and transmitting data to the second device on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0010] Based on the implementation, a first apparatus suitable for performing wireless communication can be 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, which, based on execution by the at least one processor, cause the first apparatus to perform operations including: obtaining information related to multiple timings for a physical feedback channel; transmitting control information for scheduling a physical shared channel to a second apparatus on a physical control channel; and transmitting data to the second apparatus on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0011] Based on the implementation, a processing apparatus suitable for controlling a first device can be provided. For example, the processing apparatus may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions, which, when executed by the at least one processor, can cause the first device to perform operations including: obtaining information related to multiple timings for a physical feedback channel; sending control information for scheduling a physical shared channel to a second device on a physical control channel; and sending data to the second device on the physical shared channel. For example, the physical shared channel may be related to multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be related to one of the multiple spatial filters.

[0012] Based on the implementation, a non-transitory computer-readable storage medium storing instructions can be provided. The instructions, upon execution, can cause a first device to perform operations including: obtaining information related to multiple timings for a physical feedback channel; sending control information for scheduling a physical shared channel to a second device on a physical control channel; and sending data to the second device on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0013] Based on the implementation, a method for performing wireless communication by a second device can be provided. The method may include the steps of: obtaining information related to multiple timings for a physical feedback channel; receiving control information for scheduling a physical shared channel from a first device on a physical control channel; and receiving data from the first device on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0014] Based on the implementation, a second device suitable for performing wireless communication can be 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, which, based on execution by the at least one processor, cause the second device to perform operations including: obtaining information related to multiple timings for a physical feedback channel; receiving control information for scheduling a physical shared channel from a first device on a physical control channel; and receiving data from the first device on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0015] Based on the implementation, a processing apparatus suitable for controlling a second device can be provided. For example, the processing apparatus may include: at least one processor; and at least one memory connected to the at least one processor and storing instructions, which, when executed by the at least one processor, can cause the second device to perform operations including: obtaining information related to multiple timings for a physical feedback channel; receiving control information for scheduling a physical shared channel from a first device on a physical control channel; and receiving data from the first device on the physical shared channel. For example, the physical shared channel may be related to multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be related to one of the multiple spatial filters.

[0016] Based on the implementation, a non-transitory computer-readable storage medium storing instructions can be provided. The instructions, upon execution, can cause a second device to perform operations including: obtaining information related to multiple timings for a physical feedback channel; receiving control information for scheduling a physical shared channel from a first device on a physical control channel; and receiving data from the first device on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0017] Beneficial effects

[0018] This disclosure provides methods and apparatus for efficiently providing services in wireless communication systems. For example, beam-based communication can be performed efficiently through the embodiments proposed in this disclosure. Attached Figure Description

[0019] Figure 1 The present disclosure illustrates a communication architecture that may be provided in a 6G system based on an embodiment of the present disclosure.

[0020] Figure 2 The electromagnetic spectrum is shown based on embodiments of the present disclosure.

[0021] Figure 3 Examples of typical NTN scenarios based on transparent payloads, based on embodiments of this disclosure, are shown.

[0022] Figure 4 Examples of typical NTN scenarios based on regenerative payloads, based on embodiments of this disclosure, are shown.

[0023] Figure 5 An example of sensing operation based on an embodiment of this disclosure is shown.

[0024] Figure 6 The structure of a time slot for a frame based on an embodiment of this disclosure is shown.

[0025] Figure 7 An example of a BWP based on an embodiment of this disclosure is shown.

[0026] Figure 8 This illustrates a process by which a UE performs V2X or SL communication based on a resource allocation mode, according to an embodiment of this disclosure.

[0027] Figure 9 An example of a wireless communication environment based on an embodiment of this disclosure is shown.

[0028] Figure 10A beam failure recovery process based on an embodiment of this disclosure is illustrated.

[0029] Figure 11 An example related to a physical feedback channel based on an implementation of this disclosure is shown.

[0030] Figure 12 An example relating to the timing of multiple feedback channels is shown based on an embodiment of this disclosure.

[0031] Figure 13 A method for performing wireless communication for a first device based on an embodiment of the present disclosure is shown.

[0032] Figure 14 A method for performing wireless communication for a second device based on an embodiment of the present disclosure is shown.

[0033] Figure 15 A communication system 1 based on an embodiment of the present disclosure is shown.

[0034] Figure 16 A wireless device based on an embodiment of the present disclosure is shown.

[0035] Figure 17 A signal processing circuit for transmitting signals based on an embodiment of the present disclosure is shown.

[0036] Figure 18 Another example of a wireless device based on an embodiment of this disclosure is shown.

[0037] Figure 19 A handheld device based on an embodiment of the present disclosure is shown.

[0038] Figure 20 The vehicle or autonomous vehicle based on an embodiment of this disclosure is shown. Detailed Implementation

[0039] 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".

[0040] 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".

[0041] 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".

[0042] 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".

[0043] 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 "PDDCH" 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".

[0044] In the following description, "when, if, or in the case of" can be replaced with "based on".

[0045] The technical features described in one of the accompanying drawings of this disclosure may be implemented individually or simultaneously.

[0046] 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 example, higher-layer parameters can be sent via Radio Resource Control (RRC) signaling or Media Access Control (MAC) signaling.

[0047] In this disclosure, "configured / configured or defined / defined" can be interpreted as being configured or pre-configured for the device via predefined signaling (e.g., SIB, MAC, RRC) from a base station or network. In this disclosure, "configured / configured or defined / defined" can be interpreted as being pre-configured for the device.

[0048] The technologies described below can be used in various wireless communication systems such as Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), 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.

[0049] The technologies proposed in this disclosure can be implemented as 6G wireless technologies and can be applied to various 6G systems. For example, 6G systems can have key features such as enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), massive machine-type communication (mMTC), artificial intelligence (AI) integrated communication, tactile internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion, and enhanced data security.

[0050] Figure 1 The present disclosure illustrates a communication architecture that may be provided in a 6G system based on an embodiment of the present disclosure. Figure 1 The implementation methods can be combined with various implementation methods of this disclosure.

[0051] In 6G, new network features may include the following.

[0052] - Satellite Integrated Network

[0053] - Connected Intelligence: Unlike previous generations of wireless communication systems, 6G is innovative, and the evolution of wireless may evolve from "connected things" to "connected intelligence." AI can be applied at every step of the communication process (or in each signal processing step described below).

[0054] - Seamless integration of wireless information and power transfer.

[0055] - Ubiquitous Hyper-3D Connectivity: Access to networks and core network functions for drones and low Earth orbit satellites will establish hyper-3D connectivity in 6G ubiquitous.

[0056] Among the new network features of 6G, several general requirements are as follows.

[0057] - Small community network

[0058] - Ultra-dense heterogeneous networks

[0059] - High-capacity return

[0060] - Radar technology integrated with mobile technology: High-precision positioning (or location-based services) via communication is one of the functions of 6G wireless communication systems. Therefore, radar systems will be integrated with 6G networks.

[0061] - Software-based and virtualized.

[0062] The core implementation technologies of 6G systems are described below.

[0063] - Artificial Intelligence (AI): When AI is introduced into communication, real-time data transmission can be simplified and improved. AI can use numerous analyses to determine methods for performing complex target tasks. In other words, AI can increase efficiency and reduce processing latency. Time-consuming operations such as switching, network selection, and resource scheduling can be performed instantly by AI. AI can also play an important role in M2M, machine-to-human, and human-to-machine interactions. Additionally, AI may enable instant communication in brain-computer interfaces (BCIs). AI-based communication systems can be supported by metamaterials, smart structures, smart networks, smart devices, intelligent cognitive radios, self-maintaining wireless networks, and machine learning.

[0064] - Terahertz (THz) Communication: Data rates can be increased by increasing bandwidth. This can be achieved by using sub-TH communication with wide bandwidth and applying advanced massive MIMO technology. THz waves are referred to as submillimeter radiation, typically indicating a frequency band between 0.1THz and 10THz with corresponding wavelengths ranging from 0.03mm to 3mm. The 100GHz to 300GHz band (sub-THz band) is considered the main part of the THz band used for cellular communication. 6G cellular communication capacity increases when the sub-THz band is added to the millimeter-wave band. The defined THz band of 300GHz to 3THz is in the far-infrared (IR) band. The 300GHz to 3THz band is part of the optical band, but it lies at the boundary of the optical band and immediately follows the RF band. Therefore, the 300GHz to 3THz band is similar to RF. Figure 2 The electromagnetic spectrum is shown based on embodiments of the present disclosure. Figure 2The implementation methods can be combined with various embodiments of this disclosure. Key features of THz communication include (i) a wide bandwidth capable of supporting very high data rates; and (ii) high path loss at high frequencies (highly directional antennas are essential). The narrow beamwidth generated in highly directional antennas reduces interference. The small wavelength of THz signals allows for the integration of a greater number of antenna elements with devices and base stations operating in this band. Therefore, advanced adaptive placement techniques capable of overcoming range limitations can be used.

[0065] - Massive MIMO technology (MMIMO)

[0066] - Holographic Beamforming (HBF)

[0067] - Optical wireless technology

[0068] - Free Space Light (FSO) Backhaul Network

[0069] - Quantum communication

[0070] - Cellular communication

[0071] - Integration of wireless information and power transmission

[0072] - Integration of wireless communication and sensing

[0073] - Integrated access and backhaul networks

[0074] Big Data Analytics

[0075] - Reconfigurable smart surfaces

[0076] - Metaverse

[0077] - Blockchain

[0078] - Unmanned Aerial Vehicles (UAVs): UAVs, or drones, will become a crucial element of 6G wireless communication. In most cases, UAV technology can provide high-speed wireless data connectivity. Base station (BS) entities are installed within UAVs to provide cellular connectivity. UAVs can possess certain capabilities not found in fixed BS infrastructure, such as ease of deployment, robust line-of-sight links, and freedom of mobility control. During emergencies such as natural disasters, deploying terrestrial telecommunications infrastructure is economically infeasible and sometimes unable to provide service in volatile environments. UAVs can easily handle such situations. UAVs will become a new paradigm in wireless communication. This technology promotes the three fundamental requirements of wireless networks, such as eMBB, URLLC, and mMTC. UAVs can also be used for a variety of purposes, such as improving network connectivity, fire detection, disaster emergency services, security and monitoring, pollution monitoring, parking monitoring, and accident monitoring. Therefore, UAV technology is widely recognized as one of the most important technologies for 6G communication.

[0079] - Advanced Air Mobility (AAM): AAM is a higher-level concept than Urban Air Mobility (UAM). UAM refers to air transport that can be used in urban areas and can also refer to transport vehicles that include movement between urban areas and regional hubs.

[0080] - Autonomous Driving (Autonomous Driving): Vehicle-to-Everything (V2X) is a core element for establishing autonomous driving infrastructure. It can be a technology that enables vehicles to communicate and share with various elements on the road, such as vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I). To maximize the performance of autonomous driving and ensure high safety, high transmission speeds and low latency technologies are essential. Furthermore, in the future, autonomous driving may need to go beyond simply delivering warnings or guidance messages to the driver and actively intervene in vehicle operation and directly control the vehicle in dangerous situations. Therefore, given the potentially enormous amount of information that needs to be sent and received, autonomous driving is expected to be maximized in 6G, which offers higher transmission speeds and lower latency than 5G.

[0081] - Non-terrestrial network (NTN): NTN can refer to a network or network segment that utilizes radio frequency (RF) resources on a satellite (or unmanned aerial system (UAS) platform). Figure 3 An example of a typical NTN scenario based on 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 3The satellite (or UAS platform) can establish a service link with the UE. The satellite (or UAS platform) can connect to the gateway via a feeder link. The satellite can connect to the data network via the gateway. The beam coverage area refers to the area where the signal transmitted by the satellite can be received. (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 another satellite (or another UAS platform) via an inter-satellite link (ISL). Another satellite (or another UAS platform) can connect to the gateway via a feeder link. Based on regenerated payloads, a satellite can connect to the data network via a gateway and another satellite. If no ISL exists between satellites, a feeder link between the satellite and the gateway may be required. Figure 3 and Figure 4 This 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 on-board processing) payloads. For example, a satellite (or UAS platform) can generate multiple beams over a designated service area based on its field of view. For example, the satellite's (or UAS platform's) field of view can vary depending on the on-board 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 the 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 substantially equivalent to equipping a satellite (or UAS platform) with all or part of the base station functionality.

[0082] - Integrated Sensing and Communication (ISAC): Wireless sensing is a technology enabler that acquires information about the characteristics of the environment and / or objects within that environment, using radio frequency (RF) to determine the distance (range), angle, or instantaneous linear velocity of an object. RF sensing capabilities can provide device-free object localization services because the object does not need to be connected via a device in the network. The ability to obtain range, velocity, and angle information from RF signals can provide a wide range of new functionalities, such as various object detection, object recognition (e.g., vehicles, people, animals, drones), and high-precision localization, tracking, and activity recognition. For example, wireless sensing services can provide input to various vertical sectors (e.g., unmanned aerial vehicles, smart homes, V2X, factories, railways, public safety, etc.) to enable applications such as intruder detection, assisted vehicle handling and navigation, trajectory tracking, collision avoidance, traffic management, health and activity monitoring, etc. In some cases, wireless sensing can also 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) can rely on the processing of the transmission, reflection, and scattering of wireless sensing signals. Therefore, wireless sensing may have the opportunity to enhance traditional 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) shows an example of sensing (e.g., single-site sensing) with a sensing receiver and a sensing transmitter located in the same place, and Figure 5 (b) shows an example of sensing with separate sensing receivers and sensing transmitters (e.g., dual-station sensing).

[0083] The radio interface protocol layer 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, located in Layer 3, controls the radio resources between the UE and the network. For this purpose, the RRC layer exchanges RRC messages between the UE and the BS layer.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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), Non-Acknowledgment Mode (UM), and Acknowledgment Mode (AM). AM RLC provides error correction through Automatic Repeat Request (ARQ).

[0088] 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).

[0089] 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.

[0090] 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) streams and Data Radio Bearers (DRBs), as well as the QoS Stream ID (QFI) tagging in both DL and UL packets.

[0091] 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.

[0092] 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_INACTIVE) state is defined, and a UE in the RRC_INACTIVE state can maintain its connection with the core network while releasing its connection with the BS.

[0093] Data is transmitted from the network to the UE via downlink transport channels. Examples of downlink transport channels include the Broadcast Channel (BCH) for transmitting system information and the Shared Downlink Channel (SCH) for transmitting other user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services can be transmitted via the downlink SCH or via a separate downlink multicast channel (MCH). Furthermore, uplink transport channels for transmitting (or transmitting) data from the UE to the network include the Random Access Channel (RACH) for transmitting initial control messages and the Shared Uplink Channel (SCH) for transmitting other user traffic or control messages.

[0094] 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.

[0095] 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).

[0096] 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).

[0097] Table 2 below shows the SCS-based configuration under normal or extended CP usage. Number of symbols per time slot Number of time slots per frame and the number of time slots per subframe .

[0098] [Table 2]

[0099]

[0100] Figure 6 The structure of a time slot for an NR frame according to an embodiment of the present disclosure is shown. Figure 6 The implementation methods can be combined with various implementation methods of this disclosure.

[0101] 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.

[0102] A bandwidth portion (BWP) can be a contiguous set of physical resource blocks (PRBs) within a given set of parameters. PRBs can be selected from a contiguous set of common resource blocks (CRBs) for a given set of parameters on a given carrier.

[0103] 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. Assuming that... Figure 7 In this implementation, the number of BWPs is 3.

[0104] 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.

[0105] It can be determined by point A and its offset relative to point A ( ) and bandwidth ( 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.

[0106] Sidelink synchronization signals (SLSS) can include a primary sidelink synchronization signal (PSSS) and a secondary sidelink synchronization signal (SSSS) as sidelink (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.

[0107] 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).

[0108] 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.

[0109] 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.

[0110] Figure 8This illustrates the process by which a UE performs V2X or SL communication based on a resource allocation mode, according to an embodiment of this disclosure. Figure 8 The implementation methods can be combined with various implementation methods of this disclosure.

[0111] 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 S800, 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.

[0112] 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.

[0113] 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.

[0114] Reference Figure 8 In (b) of the 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 a 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.

[0115] 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.

[0116] 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.

[0117] Reference Figure 8 In step (a), the first UE can send SL HARQ feedback to the base station via PUCCH and / or PUSCH in step S840.

[0118] Figure 9 An example of a wireless communication environment based on an embodiment of this disclosure is shown. Figure 9 The implementation methods can be combined with various implementation methods of this disclosure.

[0119] Reference Figure 9 The first device (910), the second device (920) and the third device (930) are shown as part of a device for using a wireless channel in a wireless communication system. Figure 9 Only one first device (910), one second device (920) and one third device (930) are shown, but the invention is not limited thereto.

[0120] According to this disclosure, the first device (910), the second device (920), and / or the third device (930) can transmit and receive wireless signals in a millimeter-wave (mmWave) band. For example, to improve channel gain, the first device (910), the second device (920), and / or the third device (930) can perform beamforming. Here, beamforming can include transmit beamforming and receive beamforming. For example, the first device (910), the second device (920), and / or the third device (930) can provide directionality to the transmitted or received signals. For example, the first device (910), the second device (920), and / or the third device (930) can select a serving beam (912, 913, 921, 931) through a beam search or beam management process. After selecting the serving beam (912, 913, 921, 931), communication can be performed using resources shared with the quasi-co-location (QCL) of the transmitting serving beam.

[0121] According to this disclosure, the first device (910), the second device (920), and / or the third device (930) may include an antenna array. Each antenna included in the antenna array may be referred to as an array element or an antenna element. The antenna array may be configured in various forms, such as a linear array or a multilayer array. The antenna array may be referred to as a massive MIMO antenna array. For example, the antenna array may include multiple subarrays, each subarray including multiple antenna elements.

[0122] When a transmitting UE sends a Physical Control Channel / Physical Shared Channel (PSCCH / PSSCH) and fails to receive a Physical Feedback Channel (PSFCH) from a receiving UE (HARQ ACK or HARQ NACK), the Discontinuous Transmission (DTX) count increments by 1, and a Single-Level Link Default (SL) can be declared when the DTX count reaches a threshold. For example, when declaring an SL RLF for a unicast link, the UE can release the PC5 Radio Resource Control (PC5 RRC) connection for which the SL RLF has been declared and can report the PC5 link identifier associated with the released PC5 RRC connection to an upper layer (e.g., the Vehicle-to-Everything (V2X) layer). For example, the UE can report the occurrence of an SL RLF to the base station. In this case, the UE can report the unicast link information (Destination Layer 2 ID) for the SL RLF and the reason for the SL RLF together.

[0123] For example, beam management operations in millimeter-wave frequencies have recently been introduced into conventional NR Uu (operations between the base station and the UE). Beam management operations may include beam scheduling, beam selection, beam failure recovery, etc. In this disclosure, beam management operations (e.g., beam failure recovery) are proposed as follows. For example, the following proposals may relate to beam management operations in NR. Furthermore, the following proposals are not limited to NR. For example, the following proposals may relate to beam management operations in a side link. Furthermore, the following proposals are not limited to a side link. For example, the following proposals may relate to beam management operations in an NR side link.

[0124] The UE can perform FR2 (millimeter-wave frequency-based communication) operations based on the following. For example, FR2 can be sidelink FR2. For example, sidelink FR2 can refer to sidelink-based communication using sidelink millimeter-wave frequencies. Furthermore, the following operations are not limited to sidelink FR2. This disclosure is not limited to sidelink FR2. For example, this disclosure can be applied to 5G FR2 or beyond (e.g., 6G FR2).

[0125] - Beam scanning operation: The UE can perform an operation by scanning the beams used for communication to find the optimal beam (e.g., transmit beam, receive beam). For example, communication during a beam scanning operation can be sidelink communication. For example, the UE can perform an operation based on a pre-configured scheme to cover a spatial area using the transmit beam and / or receive beam within a specific time interval.

[0126] - Beam measurement operation: The UE can perform an operation to find an RS whose measured value is greater than or equal to a threshold when measuring a reference signal (RS) sent by a peer UE.

[0127] - Beam selection operation: The UE can perform an operation to select the best beam (e.g., transmit beam, receive beam) based on beam measurement results.

[0128] - Beam Reporting Operation: The UE can perform an operation to report the selected best beam to a peer UE or base station.

[0129] - Beam pairing operation: The UE can perform an operation to synchronize (pair) beams (e.g., transmit beam / receive beam) between UEs, thereby enabling communication via beams (e.g., transmit beam / receive beam) between UEs.

[0130] Figure 10 A beam failure recovery process based on an embodiment of this disclosure is illustrated. Figure 10 The implementation methods can be combined with various implementation methods of this disclosure.

[0131] Reference Figure 10 When a UE detects a beam failure for communication that is greater than or equal to a threshold, the UE can trigger a beam failure recovery procedure to restore the beam. For example, when a UE detects a beam failure for sidelink communication that is greater than or equal to a threshold, the UE can trigger a sidelink beam failure recovery procedure to restore the beam. For example, when the UE's MAC layer receives more than or equal to a threshold number of beam failure instances from the physical layer, the UE can trigger a beam failure recovery procedure to restore the beam. For example, the UE's MAC layer can execute the procedure to trigger a beam failure recovery procedure to restore the beam. For example, when the UE's MAC layer receives more than or equal to a threshold number of beam failure instances from the physical layer, the UE can trigger a sidelink beam failure recovery procedure to restore the beam. For example, the UE's MAC layer can execute the procedure to trigger a sidelink beam failure recovery procedure to restore the beam. This disclosure has been described with respect to sidelink beam failure, but is not limited thereto. For example, this disclosure can be applied not only to sidelink beam failures, but also to beam failures other than sidelink beam failures.

[0132] exist Figure 10For example, the MAC layer can be configured by the RRC with a beam failure recovery procedure to indicate when a beam failure is detected. For example, beam failure can be detected by counting beam failure instance indications from the lower layer to the MAC entity. For example, the RRC can configure a maximum beam failure instance count and a beam failure detection timer. For example, if a beam failure instance indication has been received from the lower layer, the MAC entity can start or restart the beam failure detection timer. For example, if a beam failure instance indication has been received from the lower layer, the MAC entity can increment the beam failure instance counter by 1. For example, if the beam failure instance counter is greater than or equal to the maximum beam failure instance count, the MAC entity can detect a beam failure. For example, if the beam failure instance counter is greater than or equal to the maximum beam failure instance count, the MAC entity can trigger beam failure recovery. For example, if the beam failure detection timer expires, the MAC entity can set the beam failure instance counter to zero.

[0133] In this disclosure, the following are the subsequent operations of the UE in the event of a failure of the (SL)BFR procedure.

[0134] When beam failure recovery (BFR) is triggered, the UE may send a (SL)BFR MAC CE (e.g., indicating a problem with the currently operating TX or RX beam, indicating a problem with a reference signal associated with the current TX or RX beam, or indicating the optimal TX or RX beam for beam failure recovery triggered by BFR), and also activate a (SL)BFR timer to initiate the (SL)BFR procedure. If the UE does not receive feedback on the sent (SL)BFR MAC CE until the BFR timer expires (e.g., a (SL)BFR acknowledgment MAC CE or a HARQ ACK feedback), the UE may initiate the following procedure.

[0135] - The UE can retransmit (SL) BFR MAC CE (e.g., to indicate a problem with the currently operating TX or RX beam, to indicate a problem with a reference signal associated with the current TX or RX beam, or to indicate the best TX or RX beam for recovery of a beam failure triggered by BFR) and re-trigger the BFR procedure.

[0136] - The UE can treat the (SL)BFR process as a failure, regarding the PC5 RRC connection declaration (SL)RLF that triggered the (SL)BFR, and report it to the base station or peer UE with the reason: (Side link)RLF based on (SL) beam failure recovery (BFR) failure.

[0137] - The UE can re-trigger or re-execute at least one of the following operations: beam scan, beam selection, or beam pairing.

[0138] Figure 11 An example related to a physical feedback channel based on an implementation of this disclosure is shown. Figure 11 The implementation methods can be combined with various implementation methods of this disclosure.

[0139] Reference Figure 11 The HARQ-based (sidelink) RLF detection process can be used to detect sidelink RLF based on the number of (consecutive) DTXs received at the Physical Feedback Channel (PSFCH) timing (for PC5-RRC connections). The RRC can configure the following parameter to control HARQ-based (sidelink) RLF detection: (sl-)maxNumConsecutiveDTX (the maximum number of (sidelink) consecutive DTXs). For example, the base station can configure (sl-)maxNumConsecutiveDTX. For example, (sl-)maxNumConsecutiveDTX can be pre-configured. For example, (sl-)maxNumConsecutiveDTX can indicate the maximum number of consecutive HARQ DTXs before triggering a (sidelink) RLF. The following UE variable can be used for HARQ-based (sidelink) RLF detection: numConsecutiveDTX (the number of (consecutive) DTXs), which can be maintained for each PC5-RRC connection. The (sidelink) HARQ entity should (re)initialize numConsecutiveDTX to zero (if any) for each PC5-RRC connection established by the upper layer when establishing a PC5-RRC connection or (re)configuring sl-maxNumConsecutiveDTX. The (sidelink) HARQ entity can increment numConsecutiveDTX by 1 for each PSFCH reception timing associated with a PSSCH transmission. For example, if no PSFCH reception occurs at a PSFCH reception timing, the (sidelink) HARQ entity can increment numConsecutiveDTX by 1. For example, if numConsecutiveDTX reaches (sl-)maxNumConsecutiveDTX, the (sidelink) HARQ entity can indicate a HARQ-based (sidelink) RLF detection to the RRC. For example, if no PSFCH reception occurs at a PSFCH reception timing, the (sidelink) HARQ entity can reinitialize numConsecutiveDTX to zero.

[0140] When a transmitting UE sends a Physical Control Channel / Physical Shared Channel (PSCCH / PSSCH) and fails to receive a Physical Feedback Channel (PSFCH) from a receiving UE (HARQ ACK or HARQ NACK), the Discontinuous Transmission (DTX) count increments by 1, and a Single-Level Link Default (SL) can be declared when the DTX count reaches a threshold. For example, when declaring an SL RLF for a unicast link, the UE can release the PC5 Radio Resource Control (PC5 RRC) connection for which the SL RLF has been declared and can report the PC5 link identifier associated with the released PC5 RRC connection to an upper layer (e.g., the Vehicle-to-Everything (V2X) layer). For example, the UE can report the occurrence of an SL RLF to the base station. In this case, the UE can report the unicast link information (Destination Layer 2 ID) for the SL RLF and the reason for the SL RLF together.

[0141] In this disclosure, a method is proposed to support DTX-based (SL)RLF declaration operations for a transmitting UE in (side-link) frequency range 2 (FR2) operation. For example, operations are proposed regarding how the UE performs DTX counting for (SL)RLF declaration in (side-link) FR2 operation and how to configure (SL)RLF parameters (e.g., a maximum DTX threshold: when the DTX reaches the threshold, the UE can declare (SL)RLF in (side-link) FR2 operation).

[0142] For example, the transmitting UE can perform DTX counting independently for each beam and can configure (SL) RLF parameters for each beam / resource signaling (RS) resource (e.g., maximum DTX threshold: when DTX reaches the threshold, the UE can declare (SL) RLF in (side link) FR2 operation). When performing PSCCH / PSSCH transmission for each independent beam, if the transmitting UE fails to receive the PSFCH for the PSCCH / PSSCH transmission in that beam, the DTX count is incremented by 1, and when the DTX count reaches the "maximum DTX threshold" value, the UE declares (SL) RLF, releases the PC5 RRC connection for which (SL) RLF has been declared, and reports the PC5 link identifier associated with the released PC5 RRC connection to the upper layer (e.g., the V2X layer). For example, the UE can report the occurrence of (SL) RLF to the base station. In this case, the UE can report together the unicast link information (destination layer 2 ID) of the (SL)RLF, the beam resource information of the (SL)RLF (e.g., beam / RS resource index), and the reason for the (SL)RLF (e.g., (SL) beam failure).

[0143] For example, the transmitting UE can perform DTX counting across beams (e.g., accumulating DTX counts for all selected beams) and can declare (SL)RLF based on cross-beam / cross-RS resource configuration (SL) RLF parameters (e.g., maximum DTX threshold: the UE can declare (SL)RLF in (side link) FR2 operation when the accumulated DTX for all selected beams reaches the threshold). When performing PSCCH / PSSCH transmission across beams, if the transmitting UE fails to receive the PSFCH for the PSCCH / PSSCH transmission, the DTX count is incremented by 1, and when the DTX count reaches the "maximum DTX threshold" value, the UE declares (SL)RLF, releases the PC5 RRC connection for which the (SL)RLF has been declared, and reports the PC5 link identifier associated with the released PC5 RRC connection to the upper layer (e.g., the V2X layer). For example, the UE can report the occurrence of (SL)RLF to the base station. In this scenario, the UE can report the unicast link information (destination layer 2 ID) for which the (SL) RLF occurred, the beam resource information for which the (SL) RLF occurred (e.g., the index of the beam / RS resource), and the reason for the (SL) RLF (e.g., (SL) beam failure). For example, the transmitting UE can declare an (SL) RLF when the DTX count has reached the "maximum DTX threshold" for all beam / RS resources. For example, the transmitting UE can declare an (SL) RLF when the DTX count has reached the "maximum DTX threshold" for at least one beam. For example, it can be assumed that the beam / RS resource whose DTX count has reached the "maximum DTX threshold" is no longer valid and may not be used for (side link) communication (e.g., until beam / RS resource reselection is performed). For example, the transmitting UE can declare an (SL) RLF only if the DTX count of the beam / RS resource that reached the "maximum DTX threshold" before beam / RS resource reselection is performed has reached the "maximum DTX threshold" for all beam / RS resources and a pre-configured timer expires.

[0144] For example, a UE can perform DTX counting independently for each beam and configure the (SL)RLF parameter (e.g., maximum DTX threshold: when DTX reaches the threshold, the UE can declare (SL)RLF in (sidelink) FR2 operation) as a parameter typically applied to all beam / RS resources (or configured as an independent (SL)RLF parameter for each beam / RS resource) to perform the (SL)RLF declaration operation. For example, a transmitting UE can declare (SL)RLF when the DTX count has reached the “maximum DTX threshold” for all beam / RS resources. For example, a transmitting UE can declare (SL)RLF when the DTX count has reached the “maximum DTX threshold” for at least one beam. For example, it can be assumed that the beam / RS resource whose DTX count has reached the “maximum DTX threshold” is no longer valid and can not be used for (sidelink) communication (e.g., until beam / RS resource reselection is performed). For example, a transmitting UE may declare (SL)RLF only when the DTX count of a beam / RS resource that has reached the "maximum DTX threshold" before beam / RS resource reselection has reached the "maximum DTX threshold" for all beam / RS resources and a pre-configured timer expires.

[0145] For example, when performing a beam pairing procedure with a UE that has established a unicast link, if no L1 RSRP / SINR / RSRQ measurement greater than or equal to a threshold for the beam or beam-related RS resources is found, the UE can declare a (SL) RLF for that unicast link. For example, the UE can release a PC5 RRC connection with a declared (SL) RLF and report the PC5 link identifier associated with the released PC5 RRC connection to the upper layer (e.g., the V2X layer). For example, the UE can report the occurrence of a (SL) RLF to the base station. In this case, the UE can also report the unicast link information (destination layer 2 ID) of the (SL) RLF and the reason for the (SL) RLF (e.g., (SL) beam selection and / or beam pairing failure).

[0146] In environments where multiple data streams are transmitted simultaneously through different spatial filters, accurate detection of DTX and (SL)RLF can be important for maintaining high data rates and ensuring reliable communication.

[0147] Figure 12 An example relating to the timing of multiple feedback channels is shown based on an embodiment of this disclosure. Figure 12 The implementation methods can be combined with various implementation methods of this disclosure.

[0148] Reference Figure 12A Physical Control Channel / Physical Shared Channel (PSCCH / PSSCH) transmission can have N associated candidate PSFCH timings. For example, the N associated candidate PSFCH timings for a Physical Control Channel / Physical Shared Channel (PSCCH / PSSCH) can be determined by time gaps. For example, the time gap can be the minimum time gap between the Physical Feedback Channel (PSFCH) and the Physical Control Channel / Physical Shared Channel (PSCCH / PSSCH) (e.g., sl-MinTimeGapPSFCH).

[0149] For example, in (sidelink) communication technologies, when PSFCH reception is not performed due to de-prioritization of (sidelink) reception caused by priority ordering rules (e.g., priority ordering between (sidelink) transmit and (sidelink) receive or priority ordering between uplink transmit and (sidelink) receive), a DTX count can be performed (incrementing the count by 1). For example, in (sidelink) FR2 operation, the transmitting UE may more frequently fail to receive PSFCH from the receiving UE due to spatial filter mismatch (e.g., misalignment between the TX spatial filter and the RX spatial filter). As a way to mitigate this situation, a method is proposed to provide multiple timings for PSFCH transmission (or reception) of the UE by applying different spatial TX filters or RX filters for each of multiple timings to perform PSFCH transmission (or reception). For example, in an implementation, in (sidelink) FR2 operation, when the transmitting UE fails to receive PSFCH from the receiving UE due to spatial filter mismatch (e.g., misalignment between the TX spatial filter and the RX spatial filter), the DTX count can be incremented by 1. For example, in another implementation, during (sidelink) FR2 operation, when the transmitting UE fails to detect the PSFCH from the receiving UE due to spatial filter mismatch (e.g., misalignment between the TX and RX spatial filters), DTX counting may not be performed (i.e., the DTX count is not incremented and the existing DTX count value is maintained). For example, in an implementation, the base station may separately configure and deliver a "maximum DTX threshold" value for (sidelink) FR2 operation to the UE (e.g., configured to be greater than the regular "maximum DTX threshold" value configured for (sidelink) RLF operation). For example, the "maximum DTX threshold" value may be pre-configured. For example, in an implementation, when the transmitting UE attempts to receive the PSFCH but fails to detect it due to mismatch in the applied RX spatial filter, DTX counting may not be performed.

[0150] By accurately monitoring PSFCH reception through multiple spatial filters, the network can quickly identify and mitigate potential (SL)RLF scenarios and switch to alternative paths when necessary. Through accurate DTX and (SL)RLF detection of PSFCH reception through multiple spatial filters, the network can dynamically allocate spectrum resources and ensure efficient channel utilization. This is particularly important in bandwidth-constrained environments and can improve throughput and quality of service.

[0151] For example, in a (sidelink) RLF operation, the UE can perform DTX counting typically for all (sidelink) services and use (SL) RLF parameters typically applied to all (sidelink) services (e.g., maximum DTX threshold: the UE can declare (SL) RLF in a (sidelink) FR2 operation when DTX reaches the threshold) to perform the (SL) RLF operation. As a proposal, in a (sidelink) FR2 operation, the UE can use (SL) RLF parameters that depend on the Quality of Service (QoS) profile (or the Packet Quality Indicator (PQI) or QoS profile with the highest (sidelink) priority or the QoS profile with the shortest Packet Delay Budget (PDB)) to perform the (SL) RLF operation (e.g., maximum DTX threshold: the UE can declare (SL) RLF in a (sidelink) FR2 operation when DTX reaches the threshold). For example, the base station may provide the transmitting UE (or receiving UE) with QoS profile-specific candidate parameters (e.g., maximum DTX threshold), and these parameters (e.g., maximum DTX threshold) may be determined through negotiation via PC5 RRC messages between the transmitting UE (or receiving UE) and the receiving UE (or transmitting UE).

[0152] For example, in (sidelink) FR2 operation, the UE can use (SL)BFR parameters that depend on the QoS profile (or the PQI or QoS profile with the highest (sidelink) priority or the QoS profile with the shortest PDB). (e.g., BFR trigger threshold: the UE can trigger (SL)BFR when the number of beam failure instances reaches a threshold; Beam Failure Detection (BFD) timer: a timer started when a beam failure instance occurs, and BFR can be triggered when the beam failure instance reaches the BFR trigger threshold during the timer operation; BFR timer: when BFR is triggered, the UE can perform a beam recovery procedure during the timer period, and if beam recovery is not completed during the timer period, the UE can declare (SL)RLF due to beam failure recovery failure) to perform (SL) Beam Failure Recovery (BFR) operation. For example, the base station may provide the transmitting UE (or receiving UE) with QoS profile-specific candidate parameters (e.g., BFR trigger threshold, BFD timer, BFR timer), and these parameters (e.g., BFR trigger threshold, BFD timer, BFR timer) may be determined through negotiation via PC5 RRC messages between the transmitting UE (or receiving UE) and the receiving UE (or transmitting UE).

[0153] This disclosure has been described with respect to unicast, but is not limited thereto. For example, the operation of this disclosure can be applied to (sidelink) unicast, multicast, and broadcast operations.

[0154] In various embodiments of this disclosure, a “channel” can be applied by replacing “carrier” or “set of resource blocks for a particular carrier” or “band”.

[0155] In embodiments of this disclosure, beam management operations can be interchangeably interpreted as beam selection, spatial filter selection, beam pairing, spatial filter pairing, beam failure recovery (BFR), spatial filter recovery, beam scanning, spatial filter scanning, beam switching, spatial filter scanning, reference signal (RS) resource measurement, RS resource measurement report, beam report, spatial filter report, etc.

[0156] In embodiments of this disclosure, beam can be interpreted interchangeably as RS, RS resource, or spatial filter resource.

[0157] In embodiments of this disclosure, RS can be interpreted interchangeably as RS resource or spatial filter resource.

[0158] In embodiments of this disclosure, the transmitting UE can be interpreted interchangeably as a UE transmitting a beam, a UE transmitting a beam RS, or a UE transmitting beam RS resources.

[0159] In embodiments of this disclosure, the term "receiving UE" can be interchangeably interpreted as a UE receiving a beam, a UE receiving a beam RS, or a UE receiving beam RS resources.

[0160] In embodiments of this disclosure, information about the transmit beam or receive beam transmitted / received by the UE can be interchangeably interpreted as resource information of the reference signal (RS) associated with the transmit beam and resource information of the RS associated with the receive beam.

[0161] In embodiments of this disclosure, Direct Communication Request (DCR) messages and / or Direct Communication Accept (DCA) messages can be interchangeably interpreted as PC5-S (side link) DCR messages and / or PC5-S (side link) DCA messages.

[0162] In embodiments of this disclosure, although (SL)CSI-RS is exemplified as a beam-managed RS, it is not limited thereto. The operations proposed in this disclosure can be equivalently extended and applied to cases using other beam-managed reference signals (RS) besides (SL)CSI-RS (e.g., (side link) SSB).

[0163] In embodiments of this disclosure, although RSRP is exemplified as RS measurement for beam management, it is not limited thereto. The operations presented in this disclosure can be equivalently extended and applied to other measurement operations for RS measurement for beam management (e.g., Received Signal Strength Indicator (RSSI) measurement).

[0164] In embodiments of this disclosure, spatial setup and / or Transmission Configuration Indicator (TCI) information and / or Quasi-Co-location (QCL) information and / or beams can refer to each other and / or can be interchangeably interpreted as beam-related information, beam direction, spatial domain transmit filter, and / or spatial domain receive filter. For example, a spatial domain transmit filter can be a spatial domain TX filter. For example, a spatial domain receive filter can be a spatial domain RX filter.

[0165] In embodiments of this disclosure, the beam can be interpreted interchangeably as a spatial filter.

[0166] In embodiments of this disclosure, the transmit / transmit beam can be interpreted interchangeably as a spatial transmit (TX) filter or a spatial domain transmit (TX) filter.

[0167] In embodiments of this disclosure, a beam can be interpreted interchangeably as a transmit beam, a receive beam, a spatial filter, a spatial transmit (TX) filter, a spatial domain transmit (TX) filter, a spatial receive (RX) filter, or a spatial domain receive (RX) filter.

[0168] In embodiments of this disclosure, the receiving beam can be interchangeably interpreted as a spatial receiving (RX) filter or a spatial domain receiving (RX) filter.

[0169] In embodiments of this disclosure, the fact that the spatial configuration information (or beam information) is the same for transmission can mean that the UE's spatial domain TX filter is the same for two different transmitted signals. In embodiments of this disclosure, the fact that the spatial configuration information (or beam information) is the same for reception can mean that two different received signals are in QCL "Type D" relationship and / or use the same spatial RX parameters.

[0170] 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, depending on whether frame-based LBT is applied, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be specifically (or differently or independently) configured. For example, depending on whether load-based LBT is applied, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be specifically (or differently or independently) configured.

[0171] For example, the application of the schemes / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be specifically (or differently or independently) configured based on whether the LBT is successful / failed, the energy detection level associated with each LBT, the link channel on each side (PSCCH / PSSCH, PSFCH, SL-SSB (or S-SSB)), whether MCSt (multiple consecutive time slot transmission) is applied, whether multiple PSFCH timing is applied, whether the resource order / location consists of MCSt, whether multiple start points are configured in one time slot, and whether a first start point (or a second start point) is applied.

[0172] The application of the schemes / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be specifically (or differently or independently) configured based on factors such as whether the LBT is successful / failed, the energy detection level associated with each LBT, the link channel on each side (PSCCH / PSSCH, PSFCH, SL-SSB (or S-SSB)), whether MCSt (multiple consecutive time slot transmission) is applied, whether multiple PSFCH timing is applied, whether the resource order / location consists of MCSt, whether multiple start points are configured within a time slot, and whether a first start point (or a second start point) is applied.

[0173] For example, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured for each resource pool (differently or independently). For example, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured for each congestion level (differently or independently). For example, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured for each service priority (differently or independently). For example, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured for each service type (differently or independently). For example, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured for each QoS requirement (e.g., latency, reliability) (differently or independently). For example, the application of methods / rules and / or related parameters (e.g., thresholds) proposed in this disclosure can be configured for each PQI (5G QoS identifier (5QI) for PC5) (differently or independently). 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 service type (e.g., periodically generated or non-periodically generated). 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 transport resource allocation mode (e.g., mode 1 or mode 2). 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 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).

[0174] For example, depending on whether PUCCH configuration is supported, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently). For example, when PUCCH resources are configured, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently). For example, when PUCCH resources are not configured, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently). For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for each resource pool. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for resource pools configured with PSFCH. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for resource pools that are not configured with PSFCH. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for specific sidelink logical channels. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for specific sidelink logical channel groups. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for specific Uu logical channels. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for specific Uu logical channel groups. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on service / group type. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on service / group priority. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for each QoS profile. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for QoS requirements. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for QoS requirements related to URLLC / EMBB services. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for reliability-related QoS requirements.For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for latency-related QoS requirements. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for PQI. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for PFI. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for broadcast type. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for unicast broadcast type. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for multicast broadcast type. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for broadcast types. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for resource pool congestion levels. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for CBR. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for SL HARQ feedback types. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for NACK HARQ feedback only. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for ACK / NACK HARQ feedback. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for MAC PDU transmissions with HARQ feedback enabled. Similarly, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for MAC PDU transmissions with HARQ feedback disabled. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on whether PUCCH-based SL HARQ feedback reporting operation is configured. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L1 source identifier during preemption.For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L1 destination identifier during preemption. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L2 source identifier during preemption. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L2 destination identifier during preemption. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L1 source identifier during preemption-based resource reselection. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L1 destination identifier during preemption-based resource reselection. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L2 source identifier during preemption-based resource reselection. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L2 destination identifier during preemption-based resource reselection. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L1 source identifier during re-evaluation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L1 destination identifier during re-evaluation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L2 source identifier during re-evaluation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L2 destination identifier when performing a reassessment. Similarly, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L1 source identifier when performing a resource reselection based on a reassessment. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L1 destination identifier when performing a resource reselection based on a reassessment. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L2 source identifier when performing a resource reselection based on a reassessment.For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the L2 destination identifier during resource reselection based on reassessment. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the identifiers related to the L1 source ID and destination ID during preemption. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the identifiers related to the L2 source ID and destination ID during preemption. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the identifiers related to the L1 source ID and destination ID during resource reselection based on preemption. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to L2 source IDs and destination IDs during preemption-based resource reselection. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to L2 source IDs and destination IDs during re-evaluation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to L2 source IDs and destination IDs during re-evaluation-based resource reselection. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to combinations of L1 source ID and destination ID pairs and broadcast types during preemption. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to the combination of L2 source ID and destination ID pairs and broadcast type during preemption. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to the combination of L1 source ID and destination ID pairs and broadcast type during preemption-based resource reselection. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to the combination of L2 source ID and destination ID pairs and broadcast type during preemption-based resource reselection. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to the combination of L1 source ID and destination ID pairs and broadcast type during re-evaluation.For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to the combination of L2 source ID and destination ID pairs and broadcast type during re-evaluation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to the combination of L1 source ID and destination ID pairs and broadcast type during resource reselection based on re-evaluation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to the combination of L2 source ID and destination ID pairs and broadcast type during resource reselection based on re-evaluation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for identifiers related to the direction of L1 source ID and destination ID pairs during preemption. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the identifiers related to the direction of the L2 source ID and destination ID pairs during preemption. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the identifiers related to the direction of the L1 source ID and destination ID pairs during preemption-based resource reselection. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the identifiers related to the direction of the L2 source ID and destination ID pairs during preemption-based resource reselection. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the identifiers related to the direction of the L1 source ID and destination ID pairs during re-evaluation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the direction-related identifiers of the L2 source ID and destination ID pairs during re-evaluation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the direction-related identifiers of the L1 source ID and destination ID pairs during resource reselection based on re-evaluation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for the direction-related identifiers of the L2 source ID and destination ID pairs during resource reselection based on re-evaluation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for PC5 RRC connections.For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for PC5 RRC links. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type when performing SL DRX. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type associated with resource allocation mode 1 when performing SL DRX. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type associated with resource allocation mode 2 when performing SL DRX. For example, the application of the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type when supporting SLDRX. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type associated with resource allocation mode 1 when SL DRX is supported. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type associated with resource allocation mode 2 when SL DRX is supported. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type when SL DRX is not performed. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type associated with resource allocation mode 1 when SL DRX is not performed. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type associated with resource allocation mode 2 when SL DRX is not performed. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type when SL DRX is not supported. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type associated with resource allocation mode 1 when SL DRX is not supported. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured based on the SL mode type associated with resource allocation mode 2 when SL DRX is not supported.For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for reserving periodic resources. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for reserving non-periodic resources. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for applying them based on a transmission (Tx) profile. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for applying them to a Tx profile indicating a service that supports sidelink DRX operation. For example, the rules and / or related parameter configuration values ​​proposed in this disclosure can be specifically (and / or independently and / or differently) configured for applying them to a Tx profile indicating a service that does not require support for sidelink DRX operation.

[0175] The proposals and the rules for applying the proposed rules (and / or related parameter configuration values) of this disclosure can also be applied to millimeter-wave SL operations.

[0176] Figure 13 A method for performing wireless communication 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.

[0177] Reference Figure 13 In step S1310, the first device can obtain information related to multiple timings for the physical feedback channel. In step S1320, the first device can send control information for scheduling the physical shared channel to the second device on the physical control channel. In step S1330, the first device can send data to the second device on the physical shared channel. For example, the physical shared channel can be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel can be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel can be associated with one of the multiple spatial filters.

[0178] For example, monitoring can be based on information already obtained related to a first maximum discontinuous transmission (DTX) count for radio link failure (RLF) detection of the first device. For example, monitoring can be based on the DTX count incrementing by 1 based on the absence of a physical feedback channel at multiple points in time. For example, monitoring can be based on the detection of RLF based on the DTX count reaching a first maximum DTX count.

[0179] For example, monitoring can be based on information related to a second maximum number of DTX values ​​associated with RLF detection for multiple spatial filters of the first device. For example, monitoring can be based on the detection of RLF based on the number of DTX values ​​reaching a second maximum number. For example, the information related to the second maximum number of DTX values ​​can be configured independently of the information related to the first maximum number of DTX values.

[0180] For example, based on the absence of physical feedback channels in multiple spatial filters, the number of DTXs can be less than or equal to the second maximum number of DTXs.

[0181] For example, if there is no physical feedback channel in all spatial filters based on multiple spatial filters, the number of DTXs can be less than or equal to the second maximum number of DTXs.

[0182] For example, the number of DTXs can be less than or equal to the second maximum number of DTXs, based on the fact that there is no physical feedback channel in multiple spatial filters due to the mismatch between the transmit and receive spatial filters associated with multiple spatial filters.

[0183] For example, the number of DTXs can be less than or equal to the second maximum number of DTXs, based on the fact that there is no physical feedback channel in multiple spatial filters due to the mismatch between the transmit and receive spatial filters associated with multiple spatial filters.

[0184] For example, the number of DTXs can be maintained because the lack of physical feedback channels in multiple spatial filters is due to the mismatch between the transmit and receive spatial filters associated with multiple spatial filters.

[0185] For example, the second maximum number of DTXs can be configured to be greater than the first maximum number of DTXs.

[0186] For example, the second maximum number of DTX can be pre-configured.

[0187] For example, a PC5-Radio Resource Control (PC5-RRC) connection can be released based on the detection of an RLF.

[0188] For example, based on the detected RLF, the PC5 link identifier can be used to send to the Vehicle-to-Everything (V2X) layer for unicast links with released PC5-RRC connections.

[0189] For example, the physical control channel can be the physical sidelink control channel (PSCCH). For example, the physical shared channel can be the physical sidelink shared channel (PSSCH). For example, the physical feedback channel can be the physical sidelink feedback channel (PSFCH). For example, the RLF can be a sidelink RLF.

[0190] The proposed method can be applied to apparatuses based on various embodiments of this disclosure. First, the processor 102 of the first apparatus 100 can obtain information related to multiple timings for the physical feedback channel. Additionally, the processor 102 of the first apparatus 100 can control the transceiver 106 to send control information for scheduling the physical shared channel to the second apparatus on the physical control channel. Furthermore, the processor 102 of the first apparatus 100 can control the transceiver 106 to send data to the second apparatus on the physical shared channel. For example, the physical shared channel can be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel can be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel can be associated with one of the multiple spatial filters.

[0191] Based on embodiments of this disclosure, a first apparatus suitable for performing wireless communication can be provided. For example, 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, when executed by the at least one processor, can cause the first apparatus to perform operations including: obtaining information related to multiple timings for a physical feedback channel; transmitting control information for scheduling a physical shared channel to a second apparatus on a physical control channel; and transmitting data to the second apparatus on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0192] Based on embodiments of this disclosure, a processing apparatus suitable for controlling a first device can be 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, when executed by the at least one processor, can cause the first device to perform operations including: obtaining information related to multiple timings for a physical feedback channel; sending control information for scheduling a physical shared channel to a second device on a physical control channel; and sending data to the second device on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0193] Based on embodiments of this disclosure, a non-transitory computer-readable storage medium storing instructions can be provided. For example, the instructions, upon execution, can cause a first device to perform operations including: obtaining information related to multiple timings for a physical feedback channel; sending control information for scheduling a physical shared channel to a second device on a physical control channel; and sending data to the second device on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0194] Figure 14 A method for performing wireless communication using a second apparatus 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.

[0195] Reference Figure 14 In step S1410, the second device can obtain information related to multiple timings for the physical feedback channel. In step S1420, the second device can receive control information for scheduling the physical shared channel from the first device on the physical control channel. In step S1430, the second device can receive data from the first device on the physical shared channel. For example, the physical shared channel can be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel can be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel can be associated with one of the multiple spatial filters.

[0196] For example, monitoring can be based on information already obtained related to a first maximum discontinuous transmission (DTX) count for radio link failure (RLF) detection of the first device. For example, monitoring can be based on the DTX count incrementing by 1 based on the absence of a physical feedback channel at multiple points in time. For example, monitoring can be based on the detection of RLF based on the DTX count reaching a first maximum DTX count.

[0197] For example, monitoring can be based on information related to a second maximum number of DTX values ​​associated with RLF detection for multiple spatial filters of the first device. For example, monitoring can be based on the detection of RLF based on the number of DTX values ​​reaching a second maximum number. For example, the information related to the second maximum number of DTX values ​​can be configured independently of the information related to the first maximum number of DTX values.

[0198] For example, based on the absence of physical feedback channels in multiple spatial filters, the number of DTXs can be less than or equal to the second maximum number of DTXs.

[0199] For example, if there is no physical feedback channel in all spatial filters among multiple spatial filters, the number of DTXs can be less than or equal to the second maximum number of DTXs.

[0200] For example, the number of DTXs can be less than or equal to the second maximum number of DTXs, based on the fact that there is no physical feedback channel in multiple spatial filters due to the mismatch between the transmit and receive spatial filters associated with multiple spatial filters.

[0201] For example, the number of DTXs can be less than or equal to the second maximum number of DTXs, based on the fact that there is no physical feedback channel in multiple spatial filters due to the mismatch between the transmit and receive spatial filters associated with multiple spatial filters.

[0202] For example, the number of DTXs can be maintained because the lack of physical feedback channels in multiple spatial filters is due to the mismatch between the transmit and receive spatial filters associated with multiple spatial filters.

[0203] For example, the second maximum number of DTXs can be configured to be greater than the first maximum number of DTXs.

[0204] For example, the second maximum number of DTX can be pre-configured.

[0205] For example, a PC5-Radio Resource Control (PC5-RRC) connection can be released based on the detection of an RLF.

[0206] For example, based on the detected RLF, the PC5 link identifier can be used to send to the Vehicle to Everything (V2X) layer for unicast links with released PC5-RRC connections.

[0207] For example, the physical control channel can be the physical sidelink control channel (PSCCH). For example, the physical shared channel can be the physical sidelink shared channel (PSSCH). For example, the physical feedback channel can be the physical sidelink feedback channel (PSFCH). For example, the RLF can be a sidelink RLF.

[0208] The proposed method can be applied to apparatuses based on various embodiments of this disclosure. First, the processor 202 of the second apparatus 200 can obtain information related to multiple timings for the physical feedback channel. Additionally, the processor 202 of the second apparatus 200 can control the transceiver 206 to receive control information for scheduling the physical shared channel from the first apparatus on the physical control channel. Furthermore, the processor 202 of the second apparatus 200 can control the transceiver 206 to receive data from the first apparatus on the physical shared channel. For example, the physical shared channel can be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel can be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel can be associated with one of the multiple spatial filters.

[0209] Based on embodiments of this disclosure, a second apparatus suitable for performing wireless communication can be provided. For example, the second 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, when executed by the at least one processor, can cause the second apparatus to perform operations including: obtaining information related to multiple timings for a physical feedback channel; receiving control information for scheduling a physical shared channel from a first apparatus on a physical control channel; and receiving data from the first apparatus on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0210] Based on embodiments of this disclosure, a processing apparatus suitable for controlling a second device can be 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, when executed by the at least one processor, can cause the second device to perform operations including: obtaining information related to multiple timings for a physical feedback channel; receiving control information for scheduling a physical shared channel from a first device on a physical control channel; and receiving data from the first device on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0211] Based on embodiments of this disclosure, a non-transitory computer-readable storage medium storing instructions can be provided. For example, the instructions, upon execution, can cause a second device to perform operations including: obtaining information related to multiple timings for a physical feedback channel; receiving control information for scheduling a physical shared channel from a first device on a physical control channel; and receiving data from the first device on the physical shared channel. For example, the physical shared channel may be associated with multiple timings for the physical feedback channel. For example, the physical feedback channel may be based on monitoring by multiple spatial filters. For example, each of the multiple timings for the physical feedback channel may be associated with one of the multiple spatial filters.

[0212] The various embodiments disclosed herein can be combined with each other.

[0213] The following will describe apparatuses to which various embodiments of the present disclosure may be applied.

[0214] The various descriptions, functions, processes, proposals, methods and / or operating procedures described herein can be applied to, but are not limited to, various fields requiring wireless communication / connectivity between devices (e.g., 5G).

[0215] 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.

[0216] Figure 15 A communication system 1 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.

[0217] Reference Figure 15The communication system 1, which applies various embodiments of this disclosure, includes wireless devices, base stations (BS), and networks. 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 unmanned aerial vehicles (UAVs) (e.g., drones) and / or aircraft (AVs) (e.g., advanced air mobility (AAM)). XR devices can include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices and can be implemented in the form of head-mounted 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.

[0218] 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, which takes into account 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.

[0219] 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.

[0220] 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.

[0221] Figure 16 A wireless device based on an embodiment of the present disclosure is shown. Figure 16 The implementation methods can be combined with various implementation methods of this disclosure.

[0222] Reference Figure 16 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 15 The {Wireless Device 100x and BS200} and / or {Wireless Device 100x and Wireless Device 100x}.

[0223] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may additionally include one or more transceivers 106 and / or one or more antennas 108. The 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. One or more memories 104 may be connected to one or more processors 102 and may store various information relating to the operation of one or more 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 in this document. 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.

[0224] 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. One or more memories 204 may be connected to one or more processors 202 and may store various information relating to the operation of one or more 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.

[0225] The hardware components 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) based on 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 based on 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 based on the descriptions, functions, processes, 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 obtain PDUs, SDUs, messages, control information, data, or information based on the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document.

[0226] 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 operating procedures disclosed in this document can be implemented in software or firmware in the form of code, commands, and / or command sets.

[0227] 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.

[0228] 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 using one or more processors 102 and 202. For this purpose, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0229] Figure 17 A signal processing circuit for transmitting signals based on an embodiment of the present disclosure is shown. Figure 17 The implementation methods can be combined with various implementation methods of this disclosure.

[0230] Reference Figure 17 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 17 Operations / functions, but not limited to Figure 16The processors (102, 202) and / or transceivers (106, 206) can be used. Figure 16 The processors (102, 202) and / or transceivers (106, 206) are used to implement this. Figure 17 Hardware components. For example, it can be achieved through... Figure 16 The processors (102, 202) implement boxes 1010 to 1060. Alternatively, they can be implemented using... Figure 16 The processors (102, 202) implement boxes 1010 to 1050, and can be used to... Figure 16 The transceivers (106, 206) are used to implement the 1060 box.

[0231] Can be via Figure 17 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. An 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).

[0232] 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 symbols of each transmission layer can be mapped (pre-coded) to (one or more) corresponding antenna ports by pre-encoder 1040. The output z of pre-encoder 1040 can be obtained by multiplying the output y of layer mapper 1030 by an N*M precoding matrix W. Here, N is the number of antenna ports, and M is the number of transmission layers. Pre-encoder 1040 can perform precoding after performing transform precoding (e.g., DFT) for the complex modulation symbols. Alternatively, the precoder 1040 can perform precoding without performing transform precoding.

[0233] 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.

[0234] Able to be with Figure 17 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 16 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.

[0235] Figure 18 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 15 ). Figure 18 The implementation methods can be combined with various implementation methods of this disclosure.

[0236] Reference Figure 18 The wireless devices (100, 200) can correspond to Figure 16 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 storage 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 16 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 16The 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 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.

[0237] 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 15 100a), vehicles ( Figure 15 100b-1 and 100b-2), XR device ( Figure 15 100c), handheld device ( Figure 15 100d), home appliances ( Figure 15 100e), IoT devices ( Figure 15 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 15 400), BS ( Figure 15 (e.g., 200), network nodes, etc. Depending on the use case / service, wireless devices can be used in mobile or fixed locations.

[0238] exist Figure 18In 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 may be constructed using a collection of one or more processors. As an example, control unit 120 may 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 130 may 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.

[0239] The implementation will be described in detail below with reference to the accompanying drawings. Figure 18 Examples.

[0240] Figure 19 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 19 The implementation methods can be combined with various implementation methods of this disclosure.

[0241] Reference Figure 19 The handheld device 100 may include an antenna unit (108), a communication unit 110, a control unit 120, a storage unit 130, a power supply unit 140a, an interface unit 140b, and an I / O unit 140c. The antenna unit 108 may be configured as part of the communication unit 110. Blocks 110 to 130 / 140a to 140c correspond to... Figure 18 The frame is 110 to 130 / 140.

[0242] 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). Storage unit 130 can store data / parameters / programs / codes / commands required to drive handheld device 100. Storage 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, battery, etc. Interface unit 140b can support connection of handheld device 100 to other external devices. Interface unit 140b may include various ports for connecting to external devices (e.g., audio I / O ports and video I / O ports). 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.

[0243] 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 storage unit 130. Communication unit 110 can convert the information / signals stored in the memory into radio signals and transmit the converted radio signals directly to other wireless devices or to the BS. 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 storage unit 130 and can be output in various types (e.g., text, voice, image, video, or haptic feedback) through I / O unit 140.

[0244] Figure 20 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 20 The implementation methods can be combined with various implementation methods of this disclosure.

[0245] Reference Figure 20 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 18 The frame size is 110 / 130 / 140.

[0246] 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 the components 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 system, etc. Power unit 140b can supply power to the vehicle or autonomous vehicle 100 and may include wired / wireless charging circuits, batteries, 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. The 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 path when a destination is set.

[0247] 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.

[0248] The claims in this specification can be combined in various ways. For example, technical features in the method claims 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 performed by a first device in a wireless communication system, the method comprising the following steps: Obtain information related to multiple timings for the physical feedback channel; Sending control information for scheduling the physical shared channel to the second device on the physical control channel; and Data is sent to the second device on the physical shared channel. The physical shared channel is associated with the plurality of timings for the physical feedback channel. The physical feedback channel is based on monitoring by multiple spatial filters, and Each of the plurality of timings for the physical feedback channel is associated with one of the corresponding plurality of spatial filters.

2. The method according to claim 1, in, The monitoring is based on information already obtained related to the first maximum discontinuous transmission (DTX) count of radio link failures (RLF) detected for the first device. The monitoring based on the DTX number has been incremented by 1 based on the absence of reception of the physical feedback channel at the plurality of times for the physical feedback channel, and The monitoring is based on the detection of the RLF based on the fact that the number of DTX has reached the first maximum number of DTX.

3. The method according to claim 2, in, The monitoring is based on information already obtained related to a second maximum number of DTXs associated with the RLF detections for the plurality of spatial filters of the first device. The monitoring is based on the detection of the RLF based on the DTX number reaching the second maximum DTX number, and The information related to the second maximum DTX number is configured independently of the information related to the first maximum DTX number.

4. The method according to claim 3, in, Based on the absence of the physical feedback channel in the plurality of spatial filters, the number of DTXs is less than or equal to the second maximum number of DTXs.

5. The method according to claim 3, in, The number of DTXs is less than or equal to the second maximum number of DTXs because there is no physical feedback channel received in any of the plurality of spatial filters.

6. The method according to claim 3, in, The number of DTXs is less than or equal to the second maximum number of DTXs because the physical feedback channel is not received in the plurality of spatial filters due to the mismatch between the transmit spatial filters and receive spatial filters associated with the plurality of spatial filters.

7. The method according to claim 3, in, The number of DTXs is less than or equal to the second maximum number of DTXs because the physical feedback channel is not received in the plurality of spatial filters due to the mismatch between the transmit spatial filters and receive spatial filters associated with the plurality of spatial filters.

8. The method according to claim 7, in, The DTX quantity is maintained because the physical feedback channel is not received in the plurality of spatial filters due to the mismatch between the transmit spatial filters and receive spatial filters associated with the plurality of spatial filters.

9. The method according to claim 3, in, The second maximum number of DTX is configured to be greater than the first maximum number of DTX.

10. The method according to claim 3, in, The second maximum number of DTX is pre-configured.

11. The method according to claim 3, in, Based on the detection of the RLF, release the PC5-Radio Resource Control (PC5-RRC) connection.

12. The method according to claim 11, in, Based on the detected RLF, the PC5 link identifier is used to send to the Vehicle to Everything (V2X) layer for the unicast link that has released the PC5-RRC connection.

13. The method according to claim 3, in, The physical control channel is the physical sidelink control channel (PSCCH). The physical shared channel is the Physical Side Link Shared Channel (PSSCH). The physical feedback channel is the Physical Side Link Feedback Channel (PSFCH), and Here, the RLF is a side link RLF.

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, based on execution by the at least one processor, cause the first device to perform operations, the operations including: Obtain information related to multiple timings for the physical feedback channel; Sending control information for scheduling the physical shared channel to the second device on the physical control channel; and Data is sent to the second device on the physical shared channel. The physical shared channel is associated with the plurality of timings for the physical feedback channel. The physical feedback channel is based on monitoring by multiple spatial filters, and Each of the plurality of timings for the physical feedback channel is associated with one of the corresponding plurality of spatial filters.

15. A processing apparatus suitable for controlling a first device, 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, based on execution by the at least one processor, cause the first device to perform operations, the operations including: Obtain information related to multiple timings for the physical feedback channel; Sending control information for scheduling the physical shared channel to the second device on the physical control channel; and Data is sent to the second device on the physical shared channel. The physical shared channel is associated with the plurality of timings for the physical feedback channel. The physical feedback channel is based on monitoring by multiple spatial filters, and Each of the plurality of timings for the physical feedback channel is associated with one of the corresponding plurality of spatial filters.

16. A non-transitory computer-readable storage medium storing instructions that, upon execution, cause a first means to perform operations, the operations comprising: Obtain information related to multiple timings for the physical feedback channel; Sending control information for scheduling the physical shared channel to the second device on the physical control channel; and Data is sent to the second device on the physical shared channel. The physical shared channel is associated with the plurality of timings for the physical feedback channel. The physical feedback channel is based on monitoring by multiple spatial filters, and Each of the plurality of timings for the physical feedback channel is associated with one of the corresponding plurality of spatial filters.

17. A method performed by a second device in a wireless communication system, the method comprising the following steps: Obtain information related to multiple timings for the physical feedback channel; Receives control information for scheduling the physical shared channel from the first device on the physical control channel; and Data is received from the first device on the physical shared channel. The physical shared channel is associated with the plurality of timings for the physical feedback channel. The physical feedback channel is based on monitoring by multiple spatial filters, and Each of the plurality of timings for the physical feedback channel is associated with one of the corresponding plurality of spatial filters.

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, based on execution by the at least one processor, cause the second device to perform operations, the operations including: Obtain information related to multiple timings for the physical feedback channel; Receives control information for scheduling the physical shared channel from the first device on the physical control channel; and Data is received from the first device on the physical shared channel. The physical shared channel is associated with the plurality of timings for the physical feedback channel. The physical feedback channel is based on monitoring by multiple spatial filters, and Each of the plurality of timings for the physical feedback channel is associated with one of the corresponding plurality of spatial filters.

19. A processing apparatus suitable for controlling a second device, 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, based on execution by the at least one processor, cause the second device to perform operations, the operations including: Obtain information related to multiple timings for the physical feedback channel; Receives control information for scheduling the physical shared channel from the first device on the physical control channel; and Data is received from the first device on the physical shared channel. The physical shared channel is associated with the plurality of timings for the physical feedback channel. The physical feedback channel is based on monitoring by multiple spatial filters, and Each of the plurality of timings for the physical feedback channel is associated with one of the corresponding plurality of spatial filters.

20. A non-transitory computer-readable storage medium storing instructions that, upon execution, cause a second means to perform operations, the operations comprising: Obtain information related to multiple timings for the physical feedback channel; On the physical control channel, receive control information from the first device for scheduling the physical shared channel; as well as Data is received from the first device on the physical shared channel. The physical shared channel is associated with the plurality of timings for the physical feedback channel. The physical feedback channel is based on monitoring by multiple spatial filters, and Each of the plurality of timings for the physical feedback channel is associated with one of the corresponding plurality of spatial filters.

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