Method and apparatus for LCP operation in consideration of beam failure

Abstract

A method of performing wireless communication by a first device and a device supporting the same are provided. The method may comprise the steps of: obtaining configuration information related to at least one beam; detecting a beam failure related to a first beam among the at least one beam; and obtaining a medium access control (MAC) protocol data unit (PDU) based on the logical channel priority (LCP). For example, the MAC PDU may be obtained based on at least one destination other than the destination associated with the first beam for which the beam failure was detected.

Description

Technical Field

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

[0002] 5G NR is the successor technology to Long Term Evolution (LTE), corresponding to a new, entirely new mobile communications system with high performance, low latency, and high availability. 5G NR can use all spectrum resources available for use cases, including low-frequency bands below 1 GHz, intermediate frequency bands from 1 GHz to 10 GHz, and high-frequency bands (millimeter waves) of 24 GHz or higher.

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

[0004] [Table 1]

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

[0006] Technical Solution

[0007] In one embodiment, a method for performing wireless communication by a first device is provided. The method may include the following steps: obtaining configuration information associated with at least one beam; detecting beam failure associated with a first beam among the at least one beam; and obtaining a medium access control (MAC) protocol data unit (PDU) based on a logical channel priority (LCP). For example, the MAC PDU may be obtained based on at least one destination excluding a destination associated with the first beam for which beam failure was detected.

[0008] In one embodiment, a first device configured to perform wireless communication is provided. The first device may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, the instructions, upon execution by the at least one processor, cause the first device to perform operations including: obtaining configuration information related to at least one beam; detecting a beam failure related to a first beam among the at least one beam; and obtaining a medium access control (MAC) protocol data unit (PDU) based on a logical channel priority (LCP). For example, the MAC PDU may be obtained based on at least one destination excluding a destination related to the first beam for which a beam failure was detected.

[0009] In one embodiment, a processing device configured to control a first device is provided. The processing device 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, upon execution by the at least one processor, cause the first device to perform operations including: obtaining configuration information related to at least one beam; detecting a beam failure related to a first beam among the at least one beam; and obtaining a medium access control (MAC) protocol data unit (PDU) based on a logical channel priority (LCP). For example, the MAC PDU may be obtained based on at least one destination excluding a destination related to the first beam for which a beam failure was detected.

[0010] In one embodiment, a non-transitory computer-readable storage medium recording instructions is provided. For example, the instructions, upon being executed, cause a first device to perform operations including: obtaining configuration information associated with at least one beam; detecting a beam failure associated with a first beam among the at least one beam; and obtaining a medium access control (MAC) protocol data unit (PDU) based on a logical channel priority (LCP). For example, the MAC PDU may be obtained based on at least one destination excluding a destination associated with the first beam for which a beam failure was detected. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0013] Figure 3 An example of a typical NTN scenario based on transparent payload according to an embodiment of the present disclosure is shown.

[0014] Figure 4 An example of a typical NTN scenario based on regeneration payload according to an embodiment of the present disclosure is shown.

[0015] Figure 5 An example of a sensing operation according to an embodiment of the present disclosure is shown.

[0016] Figure 6 The structure of a time slot of a frame according to an embodiment of the present disclosure is shown.

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

[0018] Figure 8 The present invention illustrates a process in which a UE performs V2X or SL communication based on a transmission mode according to an embodiment of the present disclosure.

[0019] Figure 9 A logical channel priority operation considering beam failure according to an embodiment of the present disclosure is shown.

[0020] Figure 10 A logical channel priority operation considering beam failure according to an embodiment of the present disclosure is shown.

[0021] Figure 11 A method for performing wireless communication by a first device according to an embodiment of the present disclosure is shown.

[0022] Figure 12 A method for a second device to perform wireless communication according to an embodiment of the present disclosure is shown.

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

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

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

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

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

[0028] Figure 18 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

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

[0030] As used in this disclosure, a slash ( / ) or a comma may mean "and / or". For example, "A / B" may mean "A and / or B". Thus, "A / B" may mean "only A", "only B", or "both A and B". For example, "A, B, C" may mean "A, B, or C".

[0031] In the present disclosure, “at least one of A and B” may mean “only A”, “only B”, or “both A and B”. In addition, in the present disclosure, the expression “at least one of A or B” or “at least one of A and / or B” may be interpreted as “at least one of A and B”.

[0032] In addition, in the present disclosure, “at least one of A, B, and C” may mean “only A,” “only B,” “only C,” or “any combination of A, B, and C.” In addition, “at least one of A, B, or C” or “at least one of A, B, and / or C” may mean “at least one of A, B, and C.”

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

[0034] In the following description, “when, if, or in the event of” may be replaced with “based on”.

[0035] The technical features described in each of the drawings in the present disclosure may be implemented separately or simultaneously.

[0036] In the present disclosure, a higher-layer parameter may be a parameter configured, preconfigured, or predefined for a UE. For example, a base station or a network may send the higher-layer parameter to the UE. For example, the higher-layer parameter may be sent via radio resource control (RRC) signaling or medium access control (MAC) signaling.

[0037] In the present disclosure, "configuration or definition" may be interpreted as configuration or pre-configuration to the device through predefined signaling (e.g., SIB, MAC, RRC) from a base station or network. In the present disclosure, "configuration or definition" may be interpreted as pre-configuration to the device.

[0038] The techniques proposed in this disclosure can be used in various wireless communication systems such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. CDMA can be implemented using radio technologies such as Universal Terrestrial Radio Access (UTRA) or CDMA-2000. TDMA can be implemented using radio technologies such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA can be implemented using radio technologies such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Evolved UTRA (E-UTRA), Long Term Evolution (LTE), 5G NR, etc.

[0039] The technology proposed in this disclosure can be implemented as 6G wireless technology and can be applied to various 6G systems. For example, 6G systems can have key factors such as enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), massive machine-type communication (mMTC), artificial intelligence (AI) unified communication, tactile Internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion, and enhanced data security.

[0040] Figure 1 A communication structure that can be provided in a 6G system based on an embodiment of the present disclosure is shown. Figure 1 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0041] New network features in 6G may include:

[0042] -Satellite integrated network

[0043] -Connected Intelligence: Unlike previous generations of wireless communication systems, 6G is revolutionary, and wireless evolution can be updated from "connecting things" to "connecting intelligence." AI can be applied to every step of the communication process (or every signal processing process described below).

[0044] -Seamless integration of wireless information and energy transmission

[0045] -Ubiquitous Super 3D Connectivity: Access to drones, very low Earth orbit satellite networks, and core network functions will ubiquitously create super 3D connectivity in 6G.

[0046] Among the above new network features of 6G, some common requirements can be as follows.

[0047] -Small cell network

[0048] -Ultra-dense heterogeneous network

[0049] - High capacity backhaul

[0050] - Radar technology integrated with mobile technology: High-precision positioning (or location-based services) through communication is one of the functions of 6G wireless communication systems. Therefore, radar systems will be integrated with 6G networks.

[0051] -Software and virtualization

[0052] The following describes the key implementation technologies for 6G systems.

[0053] Artificial Intelligence: The introduction of AI in telecommunications can simplify and improve real-time data transmission. AI can use numerous analyses to determine how to execute complex, targeted tasks, improving efficiency and reducing processing latency. Time-consuming tasks such as handover, network selection, and resource scheduling can be completed instantly using AI. AI can also play a significant role in machine-to-machine (M2M), machine-to-human, and human-to-machine communications. Furthermore, AI can enable fast communication in brain-computer interfaces (BCIs). AI-based communication systems can be powered by metamaterials, smart structures, smart networks, smart devices, intelligent cognitive radios, self-sustaining wireless networks, and machine learning.

[0054] -THz communication (terahertz communication): Data rates can be increased by increasing bandwidth. This can be achieved by using wide-bandwidth sub-THz communication and applying advanced massive MIMO techniques. THz waves (also known as sub-millimeter radiation) refer to the frequency band between 0.1 THz and 10 THz, with corresponding wavelengths typically ranging from 0.03 mm to 3 mm. The 100 GHz-300 GHz frequency band (sub-THz band) is considered the primary portion of the THz band used for cellular communications. Adding the sub-THz band to the millimeter wave band increases the capacity of 6G cellular communications. The defined THz band of 300 GHz to 3 THz lies in the far infrared (IR) band. The 300 GHz-3 THz band is part of the optical band, but it is on the boundary of the optical band, just behind the RF band. Therefore, the 300 GHz-3 THz band exhibits similarities to RF. Figure 2 The electromagnetic spectrum according to one embodiment of the present disclosure is illustrated. Figure 2The embodiments of the present disclosure can be combined with various embodiments of the present disclosure. Key features of THz communication include (i) widely available bandwidth that supports very high data rates, and (ii) high path loss at high frequencies (for which highly directional antennas are indispensable). The narrow beamwidth produced by highly directional antennas reduces interference. The small wavelength of THz signals allows a larger number of antenna elements to be integrated into devices and BSs operating in this frequency band. This enables the use of advanced adaptive array techniques that can overcome range limitations.

[0055] - Massive MIMO technology (Massive MIMO)

[0056] -Holographic Beamforming (HBF, Holographic Beamforming)

[0057] -Optical wireless technology

[0058] - Free Space Optical Backhaul Network (FSO Backhaul Network)

[0059] -Quantum communication

[0060] - No cell communication

[0061] -Integration of wireless information and power transmission

[0062] -Integration of wireless communication and sensing

[0063] -Integrated access and backhaul network

[0064] -Big data analysis

[0065] - Reconfigurable smart surfaces (Reconfigurable smart surfaces)

[0066] -Metaverse

[0067] -Blockchain

[0068] - Unmanned Aerial Vehicles (UAVs): UAVs, or drones, will be a crucial component of 6G wireless communications. In most scenarios, UAV technology can be used to provide high-speed data wireless connectivity. Base stations (BSs) can be physically mounted on UAVs to provide cellular connectivity. UAVs may possess specific features not found in fixed BS infrastructure (e.g., easy deployment, strong line-of-sight links, and controlled mobility). During emergencies such as natural disasters, the deployment of terrestrial telecommunication infrastructure is economically unfeasible and sometimes unable to provide services in volatile environments. UAVs can easily handle these situations. UAVs will be a new paradigm in wireless communications. This technology contributes to the three fundamental requirements of wireless networks: eMBB, URLLC, and mMTC. UAVs can also support many other purposes such as enhanced network connectivity, fire detection, disaster emergency services, security and surveillance, pollution monitoring, parking monitoring, accident detection, and more. Therefore, UAV technology is considered one of the most important technologies for 6G communications.

[0069] - Advanced Air Mobility (AAM): AAM is the parent concept of Urban Air Mobility (UAM), which is an aerial vehicle that can be used in urban centers and can refer to a vehicle that includes movement between urban centers and regional bases.

[0070] -Autonomous driving (self-driving): Vehicle-to-everything (V2X), a key element in building autonomous driving infrastructure, can be a technology that enables vehicles to communicate with various elements on the road and share information (such as vehicle-to-vehicle (V2V) wireless communication and vehicle-to-infrastructure (V2I) wireless communication) in order to perform autonomous driving. In order to maximize the performance of autonomous driving and ensure high safety, fast transmission speeds and low-latency technologies are necessary. In addition, in the future, autonomous driving may need to go beyond delivering warning or guidance messages to the driver and actively intervene in vehicle operations, requiring direct control of the vehicle in dangerous situations. To do this, the amount of information that needs to be sent and received may be large, so 6G is expected to maximize autonomous driving with faster transmission speeds and lower latency than 5G.

[0071] - Non-terrestrial network (NTN): NTN may refer to a network or network segment that uses radio frequency (RF) resources mounted on a satellite (or unmanned aerial system (UAS) platform). Figure 3 An example of a typical NTN scenario based on transparent payload according to an embodiment of the present disclosure is shown. Figure 4 An example of a typical NTN scenario based on regeneration payload according to an embodiment of the present disclosure is shown. Figure 3 or Figure 4 The embodiments of can be combined with various embodiments of the present disclosure. Figure 3, a satellite (or UAS platform) can establish a service link with a UE. A satellite (or UAS platform) can be connected to a gateway via a feeder link. A satellite can be connected to a data network via a gateway. Beam coverage can refer to an area where a signal transmitted by a satellite can be received. Figure 4 , a satellite (or UAS platform) can create a service link with the UE. A satellite (or UAS platform) connected to the UE can be connected to other satellites (or UAS platforms) via an inter-satellite link (ISL). Other satellites (or UAS platforms) can be connected to the gateway via a feeder link. Based on the regenerative payload, the satellite can be connected to the data network via other satellites and the gateway. If there is no ISL between the satellite and another satellite, 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 a transparent or regenerative (with onboard processing) payload. For example, a satellite (or UAS platform) can generate multiple beams over a specified service area based on the field of view of the satellite (or UAS platform). For example, the field of view of a satellite (or UAS platform) can be different based on the onboard antenna diagram and the minimum elevation angle. For example, a transparent payload can include RF filtering, frequency conversion, and amplification. Therefore, the waveform signal repeated by the payload may not be changed. For example, a regenerative payload can include RF filtering, frequency conversion and amplification, demodulation / decryption, switching and / or routing, and coding / modulation. For example, a regenerative payload can be essentially equivalent to equipping a satellite (or UAS platform) with all or part of the base station functionality.

[0072] Integrated Sensing and Communications (ISAC): Wireless sensing is a technology that uses radio frequency to determine the instantaneous linear velocity, angle, and distance (range) of an object to obtain information about the environment and / or the characteristics of objects within it. Because RF sensing functionality does not require a device connected to the object in the network, it can provide services for determining the location of an object without a device. The ability to obtain range, velocity, and angle information from RF signals can provide a wide range of new capabilities, such as detection of various objects, object identification (e.g., vehicles, people, animals, UAVs), and high-precision positioning, tracking, and activity recognition. Wireless sensing services can provide information to various industries (e.g., unmanned aerial vehicles, smart homes, V2X, factories, railways, public safety, etc.), enabling applications such as intruder detection, assisted vehicle control and navigation, trajectory tracking, collision avoidance, traffic management, and health and traffic management. In some cases, wireless sensing can use non-3GPP sensors (e.g., radar, cameras) to further support 3GPP-based sensing. For example, the operation of wireless sensing services (i.e., sensing operations) can depend on the processing of transmission, reflection, and scattering of wireless sensing signals. Therefore, wireless sensing can provide an opportunity to enhance existing communication systems from communication networks to wireless communication and sensing networks. Figure 5 An example of a sensing operation according to an embodiment of the present disclosure is shown. Figure 5 The embodiments of can be combined with various embodiments of the present disclosure. Specifically, Figure 5 (a) illustrates an example of sensing using a sensing receiver and a sensing transmitter at the same location (eg, single-station sensing), and Figure 5 (b) illustrates an example of sensing using separate sensing receivers and sensing transmitters (eg, bistatic sensing).

[0073] The radio interface protocol layers between the UE and the network can be categorized as Layer 1 (L1), Layer 2 (L2), and Layer 3 (L3) based on the lower three layers of the Open Systems Interconnection (OSI) model, which is well known in communication systems. The physical (PHY) layer, belonging to Layer 1, provides information transmission services using physical channels, and the radio resource control (RRC) layer, located at Layer 3, controls radio resources between the UE and the network. To this end, the RRC layer exchanges RRC messages between the UE and the base station layer.

[0074] The physical layer provides information transfer services to upper layers via physical channels. The physical layer is connected to the media access control (MAC) layer, its upper layer, via transport channels. Data is transferred between the MAC and physical layers via transport channels. Transport channels are categorized by how data is transmitted over the radio interface and the characteristics of the data being transmitted.

[0075] Data is transmitted between different physical layers (ie, a PHY layer of a transmitter and a PHY layer of a receiver) through a physical channel. The physical channel may be modulated using an Orthogonal Frequency Division Multiplexing (OFDM) scheme and uses time and frequency as radio resources.

[0076] The MAC layer provides services to the Radio Link Control (RLC) layer, a higher layer above the MAC layer, via logical channels. The MAC layer maps multiple logical channels to multiple transport channels. The MAC layer also provides logical channel multiplexing by mapping multiple logical channels to a single transport channel. The MAC layer provides data transmission services via logical channels.

[0077] The RLC layer performs concatenation, segmentation, and reassembly of radio link control service data units (RLC SDUs). To ensure the different quality of service (QoS) required for radio bearers (RBs), the RLC layer provides three types of operation modes: transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0078] The Radio Resource Control (RRC) layer is defined only in the control plane. The RRC layer controls logical channels, transport channels, and physical channels associated with the configuration, reconfiguration, and release of resource allocation (RBs). RBs are logical paths for data transfer between the UE and the network, provided by Layer 1 (i.e., the physical or PHY layer) and Layer 2 (i.e., the MAC layer, RLC layer, Packet Data Convergence Protocol (PDCP), and Service Data Adaptation Protocol (SDAP) layers).

[0079] The functions of the Packet Data Convergence Protocol (PDCP) in the user plane include transmission of user data, header compression and encryption. The functions of the Packet Data Convergence Protocol (PDCP) in the control plane include transmission and encryption / integrity protection of control plane data.

[0080] The Service Data Adaptation Protocol (SDAP) layer is defined only in the user plane. The SDAP layer performs mapping between Quality of Service (QoS) flows and Data Radio Bearers (DRBs) and QoS Flow ID (QFI) marking in both DL and UL packets.

[0081] RB configuration refers to the process of specifying radio protocol layers and channel attributes to provide a specific service and determining corresponding detailed parameters and operation methods. RBs can be classified into two types: signaling radio bearers (SRBs) and data radio bearers (DRBs). SRBs are used as a path for transmitting RRC messages in the control plane, and DRBs are used as a path for transmitting user data in the user plane.

[0082] When an RRC connection is established between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in the RRC connected (RRC_CONNECTED) state, otherwise the UE may be in the RRC idle (RRC_IDLE) state. In the case of NR, an RRC inactive (RRC_INACTRIVE) state is additionally defined, and the UE in the RRC_INACTRIVE state may maintain its connection with the core network while releasing its connection with the BS.

[0083] The downlink transport channels for sending (or transmitting) data from the network to the UE include the broadcast channel (BCH) for sending system information and the downlink shared channel (SCH) for sending other user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services can be sent via the downlink SCH or can be sent via a separate downlink multicast channel (MCH). In addition, the uplink transport channels for sending (or transmitting) data from the UE to the network include the random access channel (RACH) for sending initial control messages and the uplink shared channel (SCH) for sending other user traffic or control messages.

[0084] Examples of logical channels belonging to a higher layer of a transport channel and mapped to a transport channel may include a broadcast control channel (BCCH), a paging control channel (PCCH), a common control channel (CCCH), a multicast control channel (MCCH), a multicast traffic channel (MTCH), etc.

[0085] A radio frame can be used to perform uplink and downlink transmissions. A radio frame has a length of 10 ms and can be defined as consisting of two half frames (HFs). A half frame can include five 1 ms subframes (SFs). A subframe (SF) can be divided into one or more time slots, and the number of time slots within a subframe can be determined based on the subcarrier spacing (SCS). Each time slot can include 12 or 14 OFDM (A) symbols depending on the cyclic prefix (CP).

[0086] When using a normal CP, each time slot can include 14 symbols. When using an extended CP, each time slot can include 12 symbols. Herein, a symbol may include an OFDM symbol (or a CP-OFDM symbol) and a single carrier-FDMA (SC-FDMA) symbol (or a discrete Fourier transform spread OFDM (DFT-s-OFDM) symbol).

[0087] Table 2 shown below shows the number of symbols per slot (N) based on the SCS configuration (u) in the case of using a normal CP or an extended CP. slot symb ), the number of time slots per frame (N frame,μslot ) and the number of time slots per subframe (N subframe,μ slot ) example.

[0088] [Table 2]

[0089]

[0090] Figure 6 The structure of a time slot of a frame according to an embodiment of the present disclosure is shown. Figure 6 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0091] Reference Figure 6 , a time slot includes multiple symbols in the time domain. A carrier includes 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 part (BWP) can be defined as multiple consecutive (physical) resource blocks ((P)RBs) in the frequency domain, and a BWP can correspond to a parameter set (e.g., SCS, CP length, etc.). A carrier can include up to N BWPs (e.g., 5 BWPs). Data communication can be performed via activated BWPs. Each element can be called a resource element (RE) in the resource grid, and a complex symbol can be mapped to each element.

[0092] A BWP may be a contiguous set of physical resource blocks (PRBs) within a given parameter set. A PRB may be selected from a contiguous set of common resource blocks (CRBs) for a given parameter set on a given carrier.

[0093] Figure 7 An example of a BWP according to an embodiment of the present disclosure is shown. Figure 7 The embodiments of can be combined with various embodiments of the present disclosure. Figure 7 In the embodiment of the present invention, the number of BWPs is 3.

[0094] Reference Figure 7 , Common Resource Blocks (CRBs) may be carrier resource blocks numbered from one end of the carrier frequency band to the other. Additionally, PRBs may be resource blocks numbered within each BWP. Point A may indicate a common reference point for the resource block grid.

[0095] It can be obtained by point A, the offset relative to point A (N start BWP ) and bandwidth (N size BWP) to configure the BWP. For example, point A can be an external reference point of the PRBs of a carrier, and subcarrier 0 of all parameter sets (e.g., all parameter sets supported by the network on the corresponding carrier) is aligned in point A. For example, the offset can be the PRB distance between the lowest subcarrier in a given parameter set and point A. For example, the bandwidth can be the number of PRBs in a given parameter set.

[0096] The side link synchronization signal (SLSS) may include a primary side link synchronization signal (PSSS) and a secondary side link synchronization signal (SSSS) as a side link (SL)-specific sequence. The PSSS may be referred to as a side link primary synchronization signal (S-PSS), and the SSSS may be referred to as a side link secondary synchronization signal (S-SSS). For example, an M sequence of length 127 may be used for the S-PSS, and a Gold sequence of length 127 may be used for the S-SSS. For example, the UE may use the S-PSS for initial signal detection and synchronization acquisition. For example, the UE may use the S-PSS and the S-SSS for acquisition of detailed synchronization and for detection of a synchronization signal ID.

[0097] The physical sidelink broadcast channel (PSBCH) can be a (broadcast) channel for sending default (system) information, which the UE must first know before SL signal transmission / reception. For example, the default information can be information related to SLSS, duplex mode (DM), time division duplex (TDD) uplink / downlink (UL / DL) configuration, information related to resource pool, type of application related to SLSS, subframe offset, broadcast information, etc. For example, in order to evaluate PSBCH performance, in NR V2X, the payload size of PSBCH can be 56 bits, including a 24-bit cyclic redundancy check (CRC).

[0098] 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, sublink synchronization signal block (S-SSB)). The S-SSB can have the same parameter set (i.e., SCS and CP length) as the physical sublink control channel (PSCCH) / physical sublink shared channel (PSSCH) in the carrier, and the transmission bandwidth can exist within the (pre-) configured sublink (SL) BWP. For example, the S-SSB can have a bandwidth of 11 resource blocks (SBs). For example, the PSBCH can exist across 11 RBs. In addition, the frequency position of the S-SSB can be (pre-) configured. Therefore, the UE does not have to perform hypothesis detection at the frequency to discover the S-SSB in the carrier.

[0099] In the present disclosure, PSCCH can be replaced by control channel, physical control channel, control channel associated with the secondary link, physical control channel associated with the secondary link, etc. In the present disclosure, PSSCH can be replaced by shared channel, physical shared channel, shared channel associated with the secondary link, physical shared channel associated with the secondary link, etc.

[0100] Figure 8 A process of performing V2X or SL communication by a UE based on a resource allocation mode according to an embodiment of the present disclosure is shown. Figure 8 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0101] Reference Figure 8 (a), in resource allocation mode 1, the base station may schedule SL resources to be used by the UE for SL transmission. For example, in step S800, the base station may send information related to the SL resources and / or information related to the UL resources to the first UE. For example, the UL resources may include PUCCH resources and / or PUSCH resources. For example, the UL resources may be resources used to report SL HARQ feedback to the base station.

[0102] For example, the first UE may receive information related to dynamic grant (DG) resources and / or information related to configuration grant (CG) resources from the base station. For example, the CG resources may include CG type 1 resources or CG type 2 resources. In the present disclosure, the DG resources may be resources configured / allocated to the first UE by the base station through downlink control information (DCI). In the present disclosure, the CG resources may be (periodic) resources configured / allocated to the first UE by the base station through DCI and / or RRC messages. For example, in the case of CG type 1 resources, the base station may send an RRC message including information related to the CG resources to the first UE. For example, in the case of CG type 2 resources, the base station may send an RRC message including information related to the CG resources to the first UE, and the base station may send a DCI related to the activation or release of the CG resources to the first UE.

[0103] In step S810, the first UE may send a PSCCH (e.g., sidelink control information (SCI) or first-level SCI) to the second UE based on resource scheduling. In step S820, the first UE may send a PSSCH (e.g., second-level SCI, MAC PDU, data, etc.) related to the PSCCH to the second UE. In step S830, the first UE may receive a PSFCH related to the PSCCH / PSSCH from the second UE. For example, HARQ feedback information (e.g., NACK information or ACK information) may be received from the second UE via the PSFCH. In step S840, the first UE may send / report the HARQ feedback information to the base station via the PUCCH or PUSCH. For example, the HARQ feedback information reported to the base station may be information generated by the first UE based on the HARQ feedback information received from the second UE. For example, the HARQ feedback information reported to the base station may be information generated by the first UE based on a preconfigured rule. For example, the DCI may be DCI for SL scheduling.

[0104] Reference Figure 8 (b), under resource allocation mode 2, the UE may determine the SL transmission resources within the SL resources configured by the base station / network or the preconfigured SL resources. For example, the configured SL resources or the preconfigured SL resources may be a resource pool. For example, the UE may autonomously select or schedule resources for SL transmission. For example, the UE may perform SL communication by autonomously selecting resources within the configured resource pool. For example, the UE may autonomously select resources within the selection window by performing a sensing process and a resource (re)selection process. For example, sensing may be performed in units of subchannels. For example, in step S810, the first UE, which has selected resources from the resource pool by itself, may send a PSCCH (e.g., sidelink control information (SCI) or first-level SCI) to a second UE by using the resources. In step S820, the first UE may send a PSSCH (e.g., second-level SCI, MAC PDU, data, etc.) related to the PSCCH to the second UE. In step S830, the first UE may receive a PSFCH related to the PSCCH / PSSCH from the second UE.

[0105] Reference Figure 8(a) or (b), for example, the first UE may send the SCI to the second UE via the PSCCH. Alternatively, for example, the first UE may send two consecutive SCIs (e.g., level 2 SCI) to the second UE via the PSCCH and / or PSSCH. In this case, the second UE may decode the two consecutive SCIs (e.g., level 2 SCI) to receive the PSSCH from the first UE. In the present disclosure, the SCI sent via the PSCCH may be referred to as the first SCI, the first SCI, the first level SCI, or the first level SCI format, and the SCI sent via the PSSCH may be referred to as the second SCI, the second SCI, the second level SCI, or the second level SCI format.

[0106] Reference Figure 8 In step (a) or (b), in step S830, the first UE may receive the PSFCH. For example, the first UE and the second UE may determine PSFCH resources, and the second UE may use the PSFCH resources to send HARQ feedback to the first UE.

[0107] Reference Figure 8 (a), in step S840, the first UE may send SL HARQ feedback to the base station via PUCCH and / or PUSCH.

[0108] In addition, in conventional NR Uu (e.g., operations between a base station and a UE), beam management operations (e.g., beam scheduling, beam selection, beam failure recovery, etc.) have been newly introduced at millimeter wave frequencies. In this disclosure, a beam management (e.g., beam failure recovery) operation method in an NR secondary link is proposed.

[0109] Furthermore, according to the prior art, when data appears on a logical channel, LCP can be performed to generate a MAC PDU. For example, when data appears on a logical channel, a destination associated with the logical channel with the highest priority can be selected, taking into account the priority of the logical channels. A MAC PDU can be generated based on the data appearing on the logical channel associated with the selected destination, and the generated MAC PDU can be transmitted to the selected destination. For example, when a UE performs directional beam-based communication with a corresponding UE, the corresponding UE or at least one of the beams paired with the corresponding UE can have a destination. Then, for example, when the logical channel associated with the UE's destination or the beam paired with the corresponding UE has the highest priority among the logical channels where data appears, a destination can be selected, and a MAC PDU can be generated based on the data on the logical channel associated with the selected destination. However, for example, when a beam failure occurs in a beam paired between the UE and the corresponding UE, and transmission and reception may not be performed in the beam where the beam failure occurred, problems may arise in generating a MAC PDU by selecting a destination associated with a beam where the beam failure occurred. That is, for example, when LCP is performed based solely on the priority of the logical channel, a problem may occur, such as selecting a destination to which transmission cannot be performed, resulting in the generation of a MAC PDU that cannot be transmitted. In this case, for example, the inefficiency of the LCP process related to the generation of MAC PDUs may be exacerbated. In this case, for example, problems such as communication delay and power consumption caused by the generation of MAC PDUs that cannot be transmitted may occur.

[0110] In the present disclosure, a method for a logical channel priority (LCP) operation considering a secondary link beam failure when a secondary link beam failure occurs and an apparatus supporting the method are proposed.

[0111] For example, when the UE detects failures up to a threshold in a beam used for secondary link communication, the UE may trigger a secondary link beam failure recovery procedure and perform a procedure for recovering the beam.

[0112] In addition, for example, the UE can select a side-link grant in order to send side-link data (or, make a selection in advance before the side-link data appears in order to send the side-link data). And, for example, when available side-link data appears in the logical channel, the UE can select the side-link data (or destination layer 2ID) in the logical channel with the highest priority among the side-link data of the logical channel. And, for example, the UE can map the selected side-link data (or destination layer 2ID) to the side-link grant previously selected for side-link data transmission, and can use the mapped side-link grant to send the selected side-link data. And, for example, the UE can perform multiplexing by including only the side-link data identical to the selected side-link data (or the MAC service data unit (SDU) of the destination layer 2ID identical to the selected destination layer 2ID) in the MAC protocol data unit (PDU). And, for example, the UE can send the generated MAC PDU through the mapped side-link grant.

[0113] For example, if the UE detects a sidelink beam failure that occurs once or is equal to or greater than a threshold (or if the MAC layer of the UE receives a sidelink beam failure instance that occurs once or is equal to or greater than a threshold from the physical layer), then when selecting a destination (or destination layer 2 ID or sidelink data) having the highest priority logical channel among available data of the logical channel during a logical channel priority (LCP) process for sidelink data transmission performed by the UE, the UE can select a destination (or destination layer 2 ID or sidelink data) that excludes the destination (or destination layer 2 ID or sidelink data) in which a sidelink beam failure has occurred once or is equal to or greater than the threshold, and can perform an LCP operation. That is, for example, a destination (or destination layer 2 ID or sidelink data) in which a sidelink beam failure has occurred can be excluded in the process of sending sidelink data.

[0114] Figure 9 A logical channel priority operation considering beam failure according to an embodiment of the present disclosure is shown. Figure 9 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0115] Reference Figure 9 For example, UE A may use the first beam to perform beam pairing with UE B based on transmission and reception of a beam reference signal (RS). For example, UE A may detect beam failure associated with the first beam.

[0116] At step S910, beam failure may be detected based on beam failure instances (BFIs) being transmitted from a physical (PHY) layer of UE A to a medium access control (MAC) layer of UE A. For example, beam failure may be detected based on the number of BFIs transmitted from the PHY layer of UE A to the MAC layer being equal to or greater than a threshold. That is, for example, when UE B is associated with a first destination (DST) ID, beam failure may be detected in a first beam associated with the first DST ID.

[0117] At step S920, available data (or logical channel data) in the logical channels of UE A may appear. That is, for example, available data may appear for each logical channel mapped to a DST ID. For example, available data may appear in at least one logical channel mapped to the first DST ID associated with UE B.

[0118] In step S930, UE A may perform LCP based on the presence of available data in the logical channel. For example, LCP may be a process of generating a MAC PDU by multiplexing data of a logical channel with the highest priority based on the priority of the logical channel. For example, when a logical channel with the highest priority (e.g., priority: 1) among at least one logical channel associated with the first DST ID of UE B is higher than a logical channel with the highest priority (e.g., priority: 2) among at least one logical channel associated with the second DST ID of UE C, LCP may be performed based on selecting the first DST ID, and a MAC PDU may be generated. However, for example, the LCP process in step S930 may be applicable only when beam failure is not considered. For example, the LCP process considering beam failure may be as shown in step S940 below.

[0119] In step S940, unlike the above-mentioned step S930, UE A may perform LCP while taking beam failure into consideration. For example, UE A may perform LCP by selecting a DST ID associated with a logical channel having the highest priority among DST IDs other than the DST ID associated with the beam in which beam failure is detected. For example, even when a logical channel having the highest priority (e.g., priority: 1) among at least one logical channel associated with the first DST ID of UE B is higher than a logical channel having the highest priority (e.g., priority: 2) among at least one logical channel associated with the second DST ID of UE C, if beam failure is detected in the first beam associated with the first DST ID, UE A may exclude the first DST ID and select the second DST ID. For example, UE A may perform LCP to generate a MAC PDU by selecting the second DST ID based on excluding the first DST ID.

[0120] Figure 10 A logical channel priority operation considering beam failure according to an embodiment of the present disclosure is shown. Figure 10 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0121] Reference Figure 10 , when available data appears in the logical channels (LCH 1 to LCH 6), the first device may perform LCP. For example, at least one logical channel and a destination (DST) (or DST ID) may be related. For example, LCH 1 and LCH 2 may be related to DST A 1010. In addition, for example, LCH 3 and LCH 4 may be related to DST B 1020. In addition, for example, LCH 5 and LCH 6 may be related to DST C 1030. For example, the first device may perform a beam-based operation with the second device having DST A. For example, a beam failure may occur in a beam paired between the first device and the second device. In this case, for example, the first device may perform LCP while taking into account the beam failure with the second device. For example, if LCP is performed without considering beam failure (i.e., according to a conventional LCP procedure), DST A 1010 associated with LCH 1 1011 having the highest logical channel priority may be selected among at least one logical channel (LCH 1 to LCH 6) where logical channel data appears, and MAC PDU 1040 may be generated based on the data of LCH 1 1011 of the selected DST A. At this time, according to the LCP procedure considering beam failure proposed in the present disclosure, even when LCH 1 1011 has the highest priority among at least one logical channel (LCH 1 to LCH 6) where logical channel data appears, if a first device detects beam failure in a beam paired with a second device having DST A associated with LCH 1, as described above, the first device may not select DST A 1010. Furthermore, for example, the first device may select DST B associated with LCH 3 1021 having the highest logical channel priority among the DSTs (DST B, DST C) excluding DST A. In this case, for example, the first device may generate a MAC PDU 1040 based on data of the selected LCH 3 1021 of DST B.

[0122] In an embodiment of the present disclosure, spatial settings and / or transmission configuration indication (TTCI) information and / or quasi-co-location (QCL) information and / or beams, etc. may refer to each other and may be interpreted as being replaced by beam-related information, beam directions or spatial transmit / receive filters, etc.

[0123] In the embodiments of the present disclosure, the same spatial configuration information (or beam information) for transmission may mean that the UE's spatial TX filter is the same for two different transmission signals. In the embodiments of the present disclosure, the same spatial configuration information (or beam information) for reception may mean that two different receive signals are in a QCL Type D relationship and / or use the same spatial RX parameters.

[0124] In an embodiment of the present disclosure, the destination may be interpreted as being replaced by the destination layer 2 ID.

[0125] In an embodiment of the present disclosure, the beam management operation may be interpreted as being replaced by operations such as a beam selection operation, a spatial filter selection operation, a beam pairing operation, a spatial filter pairing operation, a beam failure recovery operation, a spatial filter recovery operation, a beam scanning operation, a spatial filter scanning operation, a beam switching operation, a spatial filter switching operation, a reference signal (RS) resource measurement operation, a reference signal (RS) resource measurement reporting operation, a beam reporting operation, or a spatial filter reporting operation.

[0126] For example, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be configured (differently or independently) for each SL-channel access priority category (CAPC). For example, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may 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, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be specifically (or differently or independently) configured. For example, depending on whether load-based LBT is applied, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be specifically (or differently or independently) configured.

[0127] For example, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be configured (differently or independently) for each resource pool. For example, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be configured (differently or independently) for each congestion level. For example, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be configured (differently or independently) for each service priority. For example, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be configured (differently or independently) for each service type. For example, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be configured (differently or independently) for each QoS requirement (e.g., latency, reliability). For example, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be configured (differently or independently) for each PQI (5G QoS Identifier (5QI) for PC5). For example, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be configured (differently or independently) for each service type (e.g., periodic generation or non-periodic generation). For example, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be configured (differently or independently) for each SL transmission resource allocation mode (e.g., mode 1 or mode 2). For example, whether to apply (some) of the methods / rules and / or related parameters (e.g., thresholds) proposed in the present disclosure may be configured (differently or independently) for each Tx profile (e.g., a Tx profile indicating that the service supports sub-link DRX operation or a Tx profile indicating that the service does not need to support sub-link DRX operation).

[0128] For example, depending on whether the Uu bandwidth part (BWP) is activated or deactivated, it is possible to configure (differently or independently) whether the proposed rules and / or related parameter configuration values ​​of the present disclosure are applied. For example, depending on whether the secondary link bandwidth part (BWP) is activated or deactivated, it is possible to configure (differently or independently) whether the proposed rules and / or related parameter configuration values ​​of the present disclosure are applied. For example, it is possible to configure (differently or independently) whether the proposed rules and / or related parameter configuration values ​​of the present disclosure are applied for each secondary link logical channel / logical channel group (or each Uu logical channel or Uu logical channel group). For example, it is possible to configure (differently or independently) whether the proposed rules and / or related parameter configuration values ​​of the present disclosure are applied for initial transmission resource selection. For example, it is possible to configure (differently or independently) whether the proposed rules and / or related parameter configuration values ​​of the present disclosure are applied for retransmission resource selection. For example, depending on whether PUCCH configuration is supported (for example, when PUCCH resources are configured or when PUCCH resources are not configured), whether the proposed rules and / or related parameter configuration values ​​of the present disclosure are applied can be configured (differently or independently). For example, whether the proposed rules and / or related parameter configuration values ​​of the present disclosure are applied can be configured (differently or independently) for each resource pool (for example, a resource pool with PSFCH or a resource pool without PSFCH). For example, whether the proposed rules and / or related parameter configuration values ​​of the present disclosure are applied can be configured (differently or independently) for each service / packet type. For example, whether the proposed rules and / or related parameter configuration values ​​of the present disclosure are applied can be configured (differently or independently) for each service / packet priority. For example, whether the proposed rules and / or related parameter configuration values ​​of the present disclosure are applied can be configured (differently or independently) for each QoS requirement (for example, URLLC / EMBB service, reliability, delay). For example, whether the proposed rules and / or related parameter configuration values ​​of the present disclosure are applied can be configured (differently or independently) for each PQI. For example, whether to apply the rules and / or related parameter configuration values ​​proposed in the present disclosure can be configured (differently or independently) for each PFI. For example, whether to apply the rules and / or related parameter configuration values ​​proposed in the present disclosure can be configured (differently or independently) for each broadcast type (e.g., unicast, multicast, broadcast). For example, whether to apply the rules and / or related parameter configuration values ​​proposed in the present disclosure can be configured (differently or independently) for each (resource pool) congestion level (e.g., CBR). For example, whether to apply the rules and / or related parameter configuration values ​​proposed in the present disclosure can be configured (differently or independently) for each SL HARQ feedback option (e.g., NACK-only feedback, ACK / NACK feedback). For example, whether to apply the rules and / or related parameter configuration values ​​proposed in the present disclosure can be specifically configured (or different or independent) for MAC PDU transmissions with HARQ feedback enabled.For example, whether to apply the proposed rules and / or related parameter configuration values ​​of the present invention may be specifically (or differently or independently) configured for MAC PDU transmission with HARQ feedback disabled. For example, whether to apply the proposed rules and / or related parameter configuration values ​​of the present invention may be specifically (or differently or independently) configured based on whether a PUCCH-based SL HARQ feedback reporting operation is configured. For example, whether to apply the proposed rules and / or related parameter configuration values ​​of the present invention may be specifically (or differently or independently) configured for preemption or based on whether resource reselection based on preemption is performed. For example, whether to apply the proposed rules and / or related parameter configuration values ​​of the present invention may be specifically (or differently or independently) configured for reassessment or based on whether resource reselection based on reassessment is performed. For example, whether to apply the proposed rules and / or related parameter configuration values ​​of the present invention may be specifically (or differently or independently) configured for reassessment or based on whether resource reselection based on reassessment is performed. For example, whether to apply the proposed rules and / or related parameter configuration values ​​of the present invention may be configured (differently or independently) for each (L2 or L1) (source and / or destination) identifier. For example, whether to apply the proposed rules and / or related parameter configuration values ​​of the present disclosure can be configured (differently or independently) for each (L2 or L1) (combination of source ID and destination ID) identifier. For example, whether to apply the proposed rules and / or related parameter configuration values ​​of the present disclosure can be configured (differently or independently) for each (L2 or L1) (combination of a pair of source ID and destination ID and broadcast type) identifier. For example, whether to apply the proposed rules and / or related parameter configuration values ​​of the present disclosure can be configured (differently or independently) for each direction in a pair of source layer ID and destination layer ID. For example, whether to apply the proposed rules and / or related parameter configuration values ​​of the present disclosure can be configured (differently or independently) for each PC5 RRC connection / link. For example, depending on whether SL DRX is performed, whether to apply the proposed rules and / or related parameter configuration values ​​of the present disclosure can be specifically (or differently or independently) configured. For example, depending on whether SL DRX is supported, whether to apply the proposed rules and / or related parameter configuration values ​​of the present disclosure can be specifically (or differently or independently) configured. For example, whether to apply the rules and / or related parameter configuration values ​​proposed in the present disclosure can be configured (differently or independently) for each SL mode type (e.g., resource allocation mode 1 or resource allocation mode 2). For example, whether to apply the rules and / or related parameter configuration values ​​proposed in the present disclosure can be configured specifically (or differently or independently) for the case of performing (non-)periodic resource reservation. For example, whether to apply the rules and / or related parameter configuration values ​​proposed in the present disclosure can be configured specifically (or differently or independently) for each Tx profile (e.g., a Tx profile indicating that the service supports sub-link DRX operation or a Tx profile indicating that the service does not need to support sub-link DRX operation).

[0129] It is proposed that the proposed rules (and / or related parameter configuration values) of the present disclosure may also be applied to mmWave SL operations.

[0130] According to various embodiments of the present disclosure, when data appears in a logical channel and LCP is performed, a destination to which transmission is impossible can be excluded before selecting a destination while taking into account the priority of the logical channel. Specifically, for example, when a beam failure occurs, even if the logical channel associated with the destination associated with the beam in which the beam failure has occurred has the highest priority, the data of the logical channel may not be included in the MAC PDU. That is, for example, the generation of a MAC PDU that cannot be transmitted can be prevented in advance. In this case, for example, when the UE performs beam-based communication with directionality, even if a beam failure occurs, a MAC PDU can be generated by efficiently performing LCP. And, for example, problems of communication delay and power consumption caused by the generation of a MAC PDU that cannot be transmitted can be prevented in advance.

[0131] Figure 11 A method for performing wireless communication by a first device according to an embodiment of the present disclosure is shown. Figure 11 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0132] Reference Figure 11 In step S1110, the first device may obtain configuration information related to at least one beam. In step S1120, the first device may detect a beam failure related to a first beam among the at least one beam. In step S1130, the first device may obtain a medium access control (MAC) protocol data unit (PDU) based on a logical channel priority (LCP). For example, the MAC PDU may be obtained based on at least one destination excluding a destination related to the first beam for which a beam failure was detected.

[0133] For example, the MAC PDU may be obtained by selecting a destination associated with a logical channel having the highest priority among at least one destination excluding a destination associated with a first beam for which a beam failure is detected.

[0134] For example, based on (i) the priority of the first logical channel is higher than the priority of the second logical channel and (ii) the destination associated with the first logical channel is the destination associated with the first beam in which beam failure is detected, the MAC PDU can be obtained by selecting the destination associated with the second logical channel.

[0135] For example, a MAC PDU may not be sent to a destination associated with the first beam for which a beam failure is detected.

[0136] For example, the LCP (i) may select at least one destination excluding the destination associated with the first beam in which beam failure is detected, and (ii) may multiplex data of a logical channel having the highest priority among at least one logical channel associated with the at least one destination.

[0137] For example, the data included in the MAC PDU may be a medium access control (MAC) service data unit (SDU) associated with a destination of a logical channel with the highest priority among at least one destination excluding a destination associated with a first beam in which a beam failure is detected.

[0138] Furthermore, for example, the first device may create a grant for performing transmission and may transmit a MAC PDU to the second device based on the grant. For example, the destination of the second device may be selected based on the LCP from at least one destination excluding the destination associated with the first beam for which a beam failure was detected. For example, the grant may be mapped to the destination of the second device based on the LCP. For example, based on the mapping between the grant and the destination of the second device, the MAC PDU may be transmitted to the second device based on the grant. For example, the MAC PDU may be transmitted to the second device via a physical shared channel.

[0139] For example, LCP may be performed based on the presence of available data for a logical channel.

[0140] For example, beam failure associated with the first beam can be detected based on a number of beam failure instances associated with the first beam reaching a threshold.For example, the beam failure instance can be communicated from a lower layer of the first device to a higher layer of the first device.

[0141] The proposed method can be applied to devices according to various embodiments of the present disclosure. First, the processor 102 of the first device 100 can control the transceiver 106 to obtain configuration information related to at least one beam. Furthermore, the processor 102 of the first device 100 can detect a beam failure related to a first beam among the at least one beam. Furthermore, the processor 102 of the first device 100 can control the transceiver 106 to obtain a medium access control (MAC) protocol data unit (PDU) based on a logical channel priority (LCP). For example, the MAC PDU can be obtained based on at least one destination excluding the destination related to the first beam for which the beam failure is detected.

[0142] According to one embodiment of the present disclosure, a first device configured to perform wireless communication is provided. The first device may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, the instructions are based on being executed by the at least one processor so that the first device performs operations including: obtaining configuration information related to at least one beam; detecting a beam failure related to a first beam among the at least one beam; and obtaining a medium access control (MAC) protocol data unit (PDU) based on a logical channel priority (LCP). For example, the MAC PDU may be obtained based on at least one destination excluding the destination related to the first beam for which a beam failure is detected.

[0143] According to one embodiment of the present disclosure, a processing device configured to control a first device is provided. The processing device 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 are executed by the at least one processor so that the first device performs operations including: obtaining configuration information related to at least one beam; detecting a beam failure related to a first beam among the at least one beam; and obtaining a medium access control (MAC) protocol data unit (PDU) based on a logical channel priority (LCP). For example, the MAC PDU may be obtained based on at least one destination excluding a destination related to the first beam for which a beam failure is detected.

[0144] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium recording instructions is provided. For example, the instructions, upon being executed, cause a first apparatus to perform operations including: obtaining configuration information associated with at least one beam; detecting a beam failure associated with a first beam among the at least one beam; and obtaining a medium access control (MAC) protocol data unit (PDU) based on a logical channel priority (LCP). For example, the MAC PDU may be obtained based on at least one destination excluding a destination associated with the first beam for which a beam failure was detected.

[0145] Figure 12 A method for a second device to perform wireless communication according to an embodiment of the present disclosure is shown. Figure 12 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0146] Reference Figure 12In step 1210, the second device may obtain configuration information related to at least one beam. In step 1220, the second device may receive a medium access control (MAC) protocol data unit (PDU) from the first device. For example, the destination of the second device receiving the MAC PDU may be a destination related to a logical channel having the highest priority among at least one destination excluding the destination related to the beam in which the beam failure was detected.

[0147] The proposed method can be applied to devices according to various embodiments of the present disclosure. First, the processor 202 of the second device 200 can control the transceiver 206 to obtain configuration information related to at least one beam. Furthermore, the processor 202 of the second device 200 can control the transceiver 206 to receive a medium access control (MAC) protocol data unit (PDU) from the first device. For example, the destination of the second device receiving the MAC PDU can be a destination associated with a logical channel with the highest priority among at least one destination excluding the destination associated with the beam for which a beam failure was detected.

[0148] According to one embodiment of the present disclosure, a second device configured to perform wireless communication is provided. The second device may include: at least one transceiver; at least one processor; and at least one memory connected to the at least one processor and storing instructions. For example, the instructions are based on the execution by the at least one processor so that the second device performs operations including: obtaining configuration information related to at least one beam; and receiving a medium access control (MAC) protocol data unit (PDU) from the first device. For example, the destination of the second device receiving the MAC PDU may be a destination related to a logical channel with the highest priority among at least one destination excluding the destination related to the beam for which a beam failure was detected.

[0149] According to one embodiment of the present disclosure, a processing device configured to control a second device is provided. The processing device 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 are based on the execution by the at least one processor so that the second device performs operations including: obtaining configuration information related to at least one beam; and receiving a medium access control (MAC) protocol data unit (PDU) from the first device. For example, the destination of the second device receiving the MAC PDU may be a destination related to a logical channel with the highest priority among at least one destination excluding the destination related to the beam for which a beam failure was detected.

[0150] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium recording instructions is provided. For example, the instructions, upon being executed, cause a second device to perform operations including: obtaining configuration information associated with at least one beam; and receiving a medium access control (MAC) protocol data unit (PDU) from a first device. For example, the destination of the second device receiving the MAC PDU may be a destination associated with a logical channel having the highest priority, among at least one destination excluding a destination associated with a beam for which a beam failure has been detected.

[0151] Various embodiments of the present disclosure may be combined with each other.

[0152] Hereinafter, devices to which various embodiments of the present disclosure can be applied will be described.

[0153] The various descriptions, functions, processes, proposals, methods and / or operational flows of the present disclosure described in this document may be applied to, but not limited to, various fields requiring wireless communication / connection (e.g., 5G) between devices.

[0154] Hereinafter, a more detailed description will be given with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise described, the same reference numerals may represent the same or corresponding hardware blocks, software blocks or functional blocks.

[0155] Figure 13 A communication system 1 according to an embodiment of the present disclosure is shown. Figure 13 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0156] Reference Figure 13, a communication system 1 to which various embodiments of the present disclosure are applied includes a wireless device, a base station (BS), and a network. Herein, a wireless device refers to a device that performs communication using a radio access technology (RAT) (e.g., 5G New RAT (NR) or Long Term Evolution (LTE)), and may be referred to as a communication / radio / 5G device. The wireless device may include, but is not limited to, a robot 100a, a vehicle (100b-1 and 100b-2), an extended reality (XR) device (100c), a handheld device 100d, a home appliance 100e, an Internet of Things (IoT) device 100f, and an artificial intelligence (AI) device / server 400. For example, a vehicle may include a vehicle with a wireless communication function, an autonomous vehicle, and a vehicle capable of performing inter-vehicle communication. Herein, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone) and / or an aircraft (AV) (e.g., Advanced Air Mobility (AAM)). XR devices may include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) installed in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance device, a digital signage, a vehicle, a robot, etc. Handheld devices may include smartphones, smart boards, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., notebooks). Home appliances may include TVs, refrigerators, and washing machines. IoT devices may include sensors and smart meters. For example, a BS and a network may be implemented as wireless devices, and a specific wireless device (200a) may operate as a BS / network node relative to other wireless devices.

[0157] Here, in addition to LTE, NR, and 6G, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may also include narrowband IoT for low-power communication. In this case, for example, NB-IoT technology may be an example of low-power wide area network (LPWAN) technology and may be implemented as standards such as LTE Cat NB1 and / or LTE Cat NB2, without being limited to the above names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may perform communication based on LTE-M technology. In this case, as an example, LTE-M technology may be an example of LPWAN and may be referred to by various names including enhanced machine type communication (eMTC). For example, LTE-M technology may be implemented as at least any one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE machine type communication, and / or 7) LTE M, without being limited to the above names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices 100a to 100f of the present disclosure may include at least one of Bluetooth, a low-power wide area network (LPWAN), and ZigBee considering low-power communication, and is not limited to the above names. As an example, ZigBee technology can generate a personal area network (PAN) related to low / low-power digital communication based on various standards including IEEE 802.15.4, and can be referred to by various names.

[0158] Wireless devices 100a to 100f can be connected to a network 300 via a BS 200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can be connected to an AI server 400 via the network 300. The network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although wireless devices 100a to 100f can communicate with each other via the BS 200 / network 300, wireless devices 100a to 100f can perform direct communication (e.g., sidelink communication) with each other without going through the BS / network. For example, vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). IoT devices (e.g., sensors) can perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0159] Wireless communication / connection 150a, 150b, or 150c can be established between wireless devices 100a to 100f / BS 200 or BS 200 / 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, integrated access backhaul (IAB)). The wireless device and the BS / wireless device can send / receive radio signals to / from each other via wireless communication / connection 150a and 150b. For example, wireless communication / connection 150a and 150b can send / receive signals via various physical channels. To this end, various configuration information configuration processes for transmitting / receiving radio signals, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and at least a portion of the resource allocation process can be performed based on various proposals of the present disclosure.

[0160] Figure 14 A wireless device according to an embodiment of the present disclosure is shown. Figure 14 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0161] Reference Figure 14 , the first wireless device 100 and the second wireless device 200 can transmit radio signals through various RATs (e.g., LTE and NR). Herein, {the first wireless device 100 and the second wireless device 200} may correspond to Figure 13 {wireless device 100x and BS 200} and / or {wireless device 100x and wireless device 100x} in.

[0162] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may additionally further include one or more transceivers 106 and / or one or more antennas (antenna units) 108. The processor(s) 102 may control the memory(s) 104 and / or the transceiver(s) 106, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processor(s) 102 may process information in the memory(s) 104 to generate first information / signals, and then transmit a radio signal including the first information / signals through the transceiver(s) 106. The processor(s) 102 may receive a radio signal including second information / signals through the transceiver 106, and then store information obtained by processing the second information / signals in the memory(s) 104. The memory(s) 104 may be connected to the processor(s) 102 and may store various information related to the operation of the processor(s) 102. For example, the memory(s) 104 may store software code including instructions for executing part or all of the processing controlled by the processor(s) 102 or for executing the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed in this document. Here, the processor(s) 102 and the memory(s) 104 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver(s) 106 may be connected to the processor(s) 102 and transmit and / or receive radio signals via the antenna(s) 108. Each transceiver 106 may include a transmitter and / or a receiver. The transceiver(s) 106 may be used interchangeably with the radio frequency (RF) unit(s). In the present disclosure, a wireless device may represent a communication modem / circuit / chip.

[0163] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may additionally further include one or more transceivers 206 and / or one or more antennas 208. The processor(s) 202 may control the memory(s) 204 and / or the transceiver(s) 206, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed herein. For example, the processor(s) 202 may process information in the memory(s) 204 to generate third information / signals, and then transmit a radio signal including the third information / signals through the transceiver(s) 206. The processor(s) 202 may receive a radio signal including fourth information / signals through the transceiver(s) 106, and then store information obtained by processing the fourth information / signals in the memory(s) 204. The memory(s) 204 may be connected to the processor(s) 202 and may store various information related to the operation of the processor(s) 202. For example, the memory(s) 204 may store software code including instructions for executing part or all of the processing controlled by the processor(s) 202 or for executing the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed in this document. Here, the processor(s) 202 and the memory(s) 204 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver(s) 206 may be connected to the processor(s) 202 and transmit and / or receive radio signals via the antenna(s) 208. Each transceiver 206 may include a transmitter and / or a receiver. The transceiver(s) 206 may be used interchangeably with the RF unit(s). In the present disclosure, a wireless device may represent a communication modem / circuit / chip.

[0164] The hardware elements of wireless devices 100 and 200 will be described in more detail below. One or more protocol layers may be, but are not limited to, implemented by one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more protocol data units (PDUs) and / or one or more service data units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein. One or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flows disclosed herein, and provide the generated signals to one or more transceivers 106 and 206. One or more processors 102 and 202 can receive signals (e.g., baseband signals) from one or more transceivers 106 and 206 and obtain PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document.

[0165] The one or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. The 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 the one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes, or functions. The firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be included in the one or more processors 102 and 202 or stored in one or more memories 104 and 204, thereby being driven by the one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document may be implemented using software or firmware in the form of code, commands, and / or command sets.

[0166] One or more memories 104 and 204 can be connected to one or more processors 102 and 202 and can store various types of data, signals, messages, information, programs, codes, instructions, and / or commands. One or more memories 104 and 204 can be composed of read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drive, registers, cash memory, computer-readable storage media, and / or combinations thereof. One or more memories 104 and 204 can be located internally and / or externally to one or more processors 102 and 202. One or more memories 104 and 204 can be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0167] One or more transceivers 106 and 206 may transmit user data, control information, and / or radio signals / channels described in the methods and / or operational flows of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information, and / or radio signals / channels described in the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and may transmit and receive radio signals. For example, one or more processors 102 and 202 may control the one or more transceivers 106 and 206 to transmit user data, control information, or radio signals to one or more other devices. One or more processors 102 and 202 may control the one or more transceivers 106 and 206 to receive user data, control information, or radio signals from one or more other devices. One or more transceivers 106 and 206 can be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 can be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document via one or more antennas 108 and 208. In this document, one or more antennas can be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 can convert received radio signals / channels, etc. from RF band signals to baseband signals so that the received user data, control information, radio signals / channels, etc. can be processed by one or more processors 102 and 202. One or more transceivers 106 and 206 can convert the user data, control information, radio signals / channels, etc. processed by one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more transceivers 106 and 206 can include (analog) oscillators and / or filters.

[0168] Figure 15 A signal processing circuit for transmitting a signal according to an embodiment of the present disclosure is shown. Figure 15 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0169] Reference Figure 15 , the signal processing circuit 1000 may include a scrambler 1010, a modulator 1020, a layer mapper 1030, a precoder 1040, a resource mapper 1050 and a signal generator 1060. Figure 15 operations / functions, not limited to Figure 14 The processor (102, 202) and / or transceiver (106, 206) of Figure 14 The processor (102, 202) and / or transceiver (106, 206) are implemented Figure 15 For example, you can Figure 14 Alternatively, the processor (102, 202) can implement blocks 1010 to 1060. Figure 14 The processor (102, 202) implements blocks 1010 to 1050 and can be Figure 14 The transceiver (106, 206) is used to implement block 1060.

[0170] Can be passed Figure 15 Signal processing circuit 1000 converts a codeword into a radio signal. Herein, a codeword is a sequence of coded bits for an information block. An information block may include a transport block (e.g., a UL-SCH transport block, a DL-SCH transport block). Radio signals may be transmitted via various physical channels (e.g., PUSCH and PDSCH).

[0171] Specifically, the codeword can be converted into a scrambled bit sequence by the scrambler 1010. The scrambling sequence for scrambling can be generated based on an initial value, and the initial value can include the ID information of the wireless device. The scrambled bit sequence can be modulated into a modulation symbol sequence by the modulator 1020. The modulation scheme may include pi / 2-binary phase shift keying (pi / 2-BPSK), m-phase shift keying (m-PSK), and m-quadrature amplitude modulation (m-QAM). The complex modulation symbol sequence can be mapped to one or more transmission layers by the layer mapper 1030. The modulation symbol of each transmission layer can be mapped (precoded) to (one or more) corresponding antenna ports by the precoder 1040. The output z of the precoder 1040 can be obtained by multiplying the output y of the layer mapper 1030 with the N*M precoding matrix W. Here, N is the number of antenna ports and M is the number of transmission layers. The precoder 1040 can perform precoding after performing transform precoding (e.g., DFT) on the complex modulation symbols. Alternatively, the precoder 1040 may perform precoding without performing transform precoding.

[0172] The resource mapper 1050 can map the modulation symbols of each antenna port to time-frequency resources. The time-frequency resources may include multiple symbols in the time domain (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) and multiple subcarriers in the frequency domain. The signal generator 1060 can generate a radio signal from the mapped modulation symbols, and the generated radio signal can be sent to other devices through each antenna. To this end, the signal generator 1060 may include an inverse fast Fourier transform (IFFT) module, a cyclic prefix (CP) inserter, a digital-to-analog converter (DAC), and an upconverter.

[0173] Can be used with Figure 15 The signal processing process for the signal received in the wireless device is configured in a manner opposite to the signal processing process (1010-1060) of the wireless device. Figure 14 100, 200) can receive a radio signal from the outside through an antenna port / transceiver. The received radio signal can be converted into a baseband signal by a signal restorer. To this end, the signal restorer may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module. Next, the baseband signal can be restored to a codeword through a resource demapping process, a post-coding process, a demodulation processor, and a descrambling process. The codeword can be restored to the original information block by decoding. Therefore, a signal processing circuit (not shown) for receiving a signal may include a signal restorer, a resource demapper, a post-coding process, a demodulator, a descrambler, and a decoder.

[0174] Figure 16 Another example of a wireless device according to an embodiment of the present disclosure is shown. The wireless device can be implemented in various forms according to use cases / services (see Figure 13 ). Figure 16 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0175] Reference Figure 16 , the wireless device (100, 200) may correspond to Figure 14 The wireless devices (100, 200) may be configured by various elements, components, units / portions and / or modules. For example, each of the wireless devices (100, 200) may include a communication unit 110, a control unit 120, a memory unit 130 and additional components 140. The communication unit may include a communication circuit 112 and (one or more) transceivers 114. For example, the communication circuit 112 may include Figure 14 One or more processors (102, 202) and / or one or more memories (104, 204). For example, the transceiver(s) 114 may include Figure 14The control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional components 140, and controls the overall operation of the wireless device. For example, the control unit 120 can control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit 130. The control unit 120 can transmit information stored in the memory unit 130 to the outside (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface, or store information received from the outside (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface in the memory unit 130.

[0176] The additional component 140 may be configured in various ways depending on the type of wireless device. For example, the additional component 140 may include at least one of a power unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device may be implemented in the following forms without limitation: a robot ( Figure 13 100a), vehicles ( Figure 13 100b-1 and 100b-2), XR devices ( Figure 13 100c), handheld device ( Figure 13 100d), household appliances ( Figure 13 100e), IoT devices ( Figure 13 100f), digital broadcasting terminal, hologram device, public safety device, MTC device, medical device, fintech device (or financial device), security device, climate / environmental device, AI server / device ( Figure 13 400), BS( Figure 13 200), network nodes, etc. Depending on the use case / service, the wireless device can be used in a mobile or fixed place.

[0177] exist Figure 16In the embodiment of the present invention, the various elements, components, units / parts and / or modules in the wireless device (100, 200) can all be connected to each other through a wired interface, or at least part of them can be connected wirelessly through the communication unit 110. For example, in each of the wireless devices (100, 200), the control unit 120 and the communication unit 110 can be connected through a wired interface, and the control unit 120 and the first unit (e.g., 130, 140) can be connected wirelessly through the communication unit 110. Each element, component, unit / part and / or module in the wireless device (100, 200) can also include one or more elements. For example, the control unit 120 can be constructed by a collection of one or more processors. As an example, the control unit 120 can be constructed by a collection of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing unit and a memory control processor. As another example, the memory unit 130 can be constructed by a random access memory (RAM), a dynamic RAM (DRAM), a read-only memory (ROM), a flash memory, a volatile memory, a non-volatile memory and / or a combination thereof.

[0178] Hereinafter, the implementation will be described in detail with reference to the accompanying drawings. Figure 16 .

[0179] Figure 17 A handheld device according to an embodiment of the present disclosure is shown. The handheld device may include a smartphone, a smartpad, a wearable device (e.g., a smartwatch or smart glasses), or a portable computer (e.g., a notebook). The handheld device may be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT). Figure 17 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0180] Reference Figure 17 , the handheld device 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a memory unit 130, a power supply unit 140a, an interface unit 140b, and an I / O unit 140c. The antenna unit 108 may be configured as a part of the communication unit 110. Blocks 110 to 130 / 140a to 140c correspond to Figure 16 Frame 110 to 130 / 140.

[0181] The communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from other wireless devices or a base station. The control unit 120 can perform various operations by controlling the components of the handheld device 100. The control unit 120 may include an application processor (AP). The memory unit 130 can store data / parameters / programs / codes / commands required to operate the handheld device 100. The memory unit 130 can store input / output data / information. The power supply unit 140a can supply power to the handheld device 100 and may include wired / wireless charging circuits, a battery, etc. The interface unit 140b can support connection between the handheld device 100 and other external devices. The interface unit 140b may include various ports for connecting to external devices (e.g., an audio I / O port and a video I / O port). The I / O unit 140c can input or output user-input video information / signals, audio information / signals, data, and / or information. The I / O unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and / or a haptic module.

[0182] For example, in the case of data communication, the I / O unit 140c can obtain information / signals (e.g., touch, text, voice, image, or video) input by the user, and the obtained information / signals can be stored in the memory unit 130. The communication unit 110 can convert the information / signals stored in the memory into radio signals and transmit the converted radio signals directly to other wireless devices or to the BS. The communication unit 110 can receive radio signals from other wireless devices or BSs and then restore the received radio signals to the original information / signals. The restored information / signals can be stored in the memory unit 130 and can be output as various types (e.g., text, voice, image, video, or tactile) through the I / O unit 140.

[0183] Figure 18 A vehicle or autonomous vehicle according to an embodiment of the present disclosure is shown. The vehicle or autonomous vehicle can be implemented by a mobile robot, a car, a train, a manned / unmanned aerial vehicle (AV), a ship, etc. Figure 18 The embodiments of the present disclosure may be combined with various embodiments of the present disclosure.

[0184] Reference Figure 18 , the vehicle or autonomous vehicle 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a drive unit 140a, a power supply unit 140b, a sensor unit 140c, and an autonomous driving unit 140d. The antenna unit 108 may be configured as part of the communication unit 110. Blocks 110 / 130 / 140a to 140d correspond to Figure 16 Box 110 / 130 / 140.

[0185] The communication unit 110 can send and receive signals (e.g., data signals and control signals) to and from external devices such as other vehicles, base stations (e.g., gNBs and roadside units), and servers. The control unit 120 can perform various operations by controlling components of the vehicle or autonomous vehicle 100. The control unit 120 may include an electronic control unit (ECU). The drive unit 140a can cause the vehicle or autonomous vehicle 100 to travel on the road. The drive unit 140a may include an engine, a motor, a transmission system, wheels, brakes, a steering system, etc. The power supply unit 140b can supply power to the vehicle or autonomous vehicle 100 and may include a wired / wireless charging circuit, a battery, etc. The sensor unit 140c can obtain vehicle status, external environment information, user information, etc. The sensor unit 140 c may include an inertial measurement unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, a slope sensor, a weight sensor, a heading sensor, a location module, a vehicle forward / backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, a lighting sensor, a pedal position sensor, etc. The autonomous driving unit 140 d may implement a technology for maintaining a lane in which the vehicle is traveling, a technology for automatically adjusting the speed (e.g., adaptive cruise control), a technology for autonomously driving along a determined path, a technology for driving by automatically setting a path with a destination set, etc.

[0186] For example, the communication unit 110 can receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d can generate an autonomous driving path and driving plan based on the acquired data. The control unit 120 can control the drive unit 140a so that the vehicle or autonomous driving vehicle 100 can move along the autonomous driving path according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit 110 can aperiodically / periodically acquire the latest traffic information data from the external server and acquire surrounding traffic information data from neighboring vehicles. During autonomous driving, the sensor unit 140c can acquire vehicle status and / or surrounding environment information. The autonomous driving unit 140d can update the autonomous driving path and driving plan based on the newly acquired data / information. The communication unit 110 can transmit information related to the vehicle's position, autonomous driving path, and / or driving plan to the external server. The external server can use AI technology, etc. based on the information collected from the vehicle or autonomous driving vehicle to predict traffic information data and provide the predicted traffic information data to the vehicle or autonomous driving vehicle.

[0187] The claims in this specification can be combined in various ways. For example, the technical features in the method claims of this specification can be combined to be implemented or performed in a device, and the technical features in the device claims can be combined to be implemented or performed in a method. In addition, the technical features in (one or more) method claims and (one or more) device claims can be combined to be implemented or performed in a device. In addition, the technical features in (one or more) method claims and (one or more) device claims can be combined to be implemented or performed in a method.

Claims

1. A method for performing wireless communication by a first device, the method comprising the steps of: obtaining configuration information associated with at least one beam; detecting a beam failure associated with a first beam of the at least one beam; as well as Get the Medium Access Control (MAC) Protocol Data Unit (PDU) based on the Logical Channel Priority (LCP), The MAC PDU is obtained based on at least one destination excluding a destination associated with the first beam in which the beam failure is detected.

2. The method according to claim 1, wherein The MAC PDU is obtained by selecting a destination associated with a logical channel having a highest priority among the at least one destination excluding a destination associated with the first beam in which the beam failure is detected.

3. The method according to claim 1, wherein The MAC PDU is obtained by selecting a destination associated with the second logical channel based on (i) the priority of the first logical channel is higher than the priority of the second logical channel and (ii) the destination associated with the first logical channel is the destination associated with the first beam in which the beam failure is detected.

4. The method according to claim 1, wherein The MAC PDU is not transmitted to a destination associated with the first beam in which the beam failure is detected.

5. The method according to claim 1, wherein The LCP (i) selects the at least one destination excluding the destination associated with the first beam in which the beam failure is detected, and (ii) multiplexes data of a logical channel with the highest priority among at least one logical channel associated with the at least one destination.

6. The method according to claim 1, wherein The data included in the MAC PDU is a medium access control (MAC) service data unit (SDU) associated with a destination of a logical channel with the highest priority among the at least one destination excluding a destination associated with the first beam in which the beam failure is detected.

7. The method according to claim 1, further comprising the steps of: Creating a license for performing the transfer; as well as sending the MAC PDU to the second device on the grant, The destination of the second device is selected based on the LCP from among the at least one destination excluding the destination associated with the first beam in which the beam failure is detected.

8. The method according to claim 7, wherein: The license is mapped to a destination of the second device based on the LCP.

9. The method according to claim 8, wherein The MAC PDU is sent to the second device on the grant based on a mapping between the grant and a destination for the second device.

10. The method according to claim 7, wherein: The MAC PDU is sent to the second device through a physical shared channel.

11. The method according to claim 1, wherein The LCP is performed based on the presence of available data for the logical channel.

12. The method according to claim 1, wherein The beam failure associated with the first beam is detected based on a number of beam failure instances associated with the first beam reaching a threshold.

13. The method according to claim 12, wherein: The beam failure instance is communicated from a lower layer of the first device to a higher layer of the first device.

14. A first apparatus adapted to perform wireless communication, the first apparatus 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, the instructions causing the first device to perform operations upon execution by the at least one processor, the operations comprising: obtaining configuration information associated with at least one beam; detecting a beam failure associated with a first beam of the at least one beam; and Get the Medium Access Control (MAC) Protocol Data Unit (PDU) based on the Logical Channel Priority (LCP), The MAC PDU is obtained based on at least one destination excluding a destination associated with the first beam in which the beam failure is detected.

15. A processing device adapted to control a first device, the processing device comprising: at least one processor; as well as at least one memory connected to the at least one processor and storing instructions, the instructions causing the first device to perform operations upon execution by the at least one processor, the operations comprising: obtaining configuration information associated with at least one beam; detecting a beam failure associated with a first beam of the at least one beam; and Get the Medium Access Control (MAC) Protocol Data Unit (PDU) based on the Logical Channel Priority (LCP), The MAC PDU is obtained based on at least one destination excluding a destination associated with the first beam in which the beam failure is detected.

16. A non-transitory computer-readable storage medium recording instructions, wherein when the instructions are executed, the first device performs operations, the operations comprising: obtaining configuration information associated with at least one beam; detecting a beam failure associated with a first beam of the at least one beam; as well as Get the Medium Access Control (MAC) Protocol Data Unit (PDU) based on the Logical Channel Priority (LCP), The MAC PDU is obtained based on at least one destination excluding a destination associated with the first beam in which the beam failure is detected.

17. A method for performing wireless communication by a second device, the method comprising the steps of: obtaining configuration information associated with at least one beam; as well as receiving a medium access control (MAC) protocol data unit (PDU) from the first device, The destination of the second device receiving the MAC PDU is a destination associated with a logical channel having a highest priority among at least one destination excluding a destination associated with a beam in which a beam failure is detected.

18. A second apparatus adapted to perform wireless communication, the second apparatus 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, the instructions causing the second device to perform operations upon execution by the at least one processor, the operations comprising: obtaining configuration information associated with at least one beam; and receiving a medium access control (MAC) protocol data unit (PDU) from the first device, The destination of the second device receiving the MAC PDU is a destination associated with a logical channel having a highest priority among at least one destination excluding a destination associated with a beam in which a beam failure is detected.

19. A processing device adapted to control a second device, the processing device comprising: at least one processor; as well as at least one memory connected to the at least one processor and storing instructions, the instructions causing the second device to perform operations upon execution by the at least one processor, the operations comprising: obtaining configuration information associated with at least one beam; and receiving a medium access control (MAC) protocol data unit (PDU) from the first device, The destination of the second device receiving the MAC PDU is a destination associated with a logical channel having a highest priority among at least one destination excluding a destination associated with a beam in which a beam failure is detected.

20. A non-transitory computer-readable storage medium recording instructions, wherein when the instructions are executed, the second device performs operations, the operations comprising: obtaining configuration information associated with at least one beam; as well as receiving a medium access control (MAC) protocol data unit (PDU) from the first device, The destination of the second device receiving the MAC PDU is a destination associated with a logical channel having a highest priority among at least one destination excluding a destination associated with a beam in which a beam failure is detected.

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