Method and device for executing beam reporting in wireless communication system

Abstract

The objective of the present disclosure is to execute beam reporting in a wireless communication system. This operation method of a terminal may comprise the steps of: detecting an event for user equipment-initiated / event-driven beam reporting (UE-BR); transmitting control information for beam reporting on a first uplink (UL) channel in response to the detection of the event; and transmitting the beam report on a second UL channel corresponding to the control information, wherein the control information for beam reporting includes a request for resource allocation for the second UL channel or a notification about the use of the second UL channel, and the control information for beam reporting further includes indication information for distinguishing the request for resource allocation and the notification.

Description

Method and apparatus for performing beam reporting in a wireless communication system

[0001] The present disclosure relates to a wireless communication system, and more specifically, to a method and apparatus for performing beam reporting in a wireless communication system.

[0002] Communication networks (e.g., 5G communication networks, 6G communication networks, etc.) are being developed to provide communication services that are improved over existing communication networks (e.g., LTE (long term evolution), LTE-A (advanced), etc.). 5G communication networks (e.g., NR (new radio) communication networks) can support frequency bands above 6 GHz as well as frequency bands below 6 GHz. That is, 5G communication networks can support the FR1 band and / or FR2 band. 5G communication networks can support a wider variety of communication services and scenarios compared to LTE communication networks. For example, usage scenarios for 5G communication networks may include eMBB (enhanced Mobile BroadBand), URLLC (Ultra Reliable Low Latency Communication), mMTC (massive Machine Type Communication), etc.

[0003] 6G communication networks can support a wider variety of communication services and scenarios compared to 5G communication networks. 6G communication networks can meet the requirements for ultra-high performance, ultra-bandwidth, ultra-spatial, ultra-precision, ultra-intelligence, and / or ultra-reliability. 6G communication networks can support a wide range of frequency bands and can be applied to various usage scenarios (e.g., terrestrial communication, non-terrestrial communication, sidelink communication, etc.).

[0004] Meanwhile, in 5G NR, Multiple Transmission and Reception Point (mTRP) technology refers to a technique in which a base station (e.g., gNB) utilizes multiple physically separated Transmission and Reception Points (TRPs) to communicate with a terminal. MTRP technology can resolve the problem of reduced Quality of Service (QoS) caused by terminals located at the cell edge being far from the base station, as well as the problem of inter-cell interference received from base stations located in different cells. Additionally, MTRP technology can serve the role of providing an additional communication path, which is a Non-Line-of-Sight (NLOS) path, from the base station in cases where the Line-of-Sight (NLOS) path from the base station is limited, such as in the millimeter wave band.

[0005] Beam management regarding TRP in 5G NR can be defined as a set of L1 / L2 procedures that find or maintain the optimal beam required for the transmission and reception of the TRP and the terminal, respectively. In particular, for beam management related to analog beamforming, a transmission configuration index (TCI) was introduced to configure the terminal's reception beam for a specific channel / signal, e.g., PDSCH / CSI-RS / PDCCH. The TCI was introduced to dynamically indicate quasi-colocation (QCL) information through downlink control information (DCI) at the base station.

[0006] On the other hand, depending on the state and conditions of the communication channel, it is necessary to switch the uplink signaling method between the Single Transmission and Reception Point (sTRP) method and the Multiple Transmission and Reception Point method. However, the method and related procedure for switching the uplink signaling method between the Single Transmission and Reception Point method and the Multiple Transmission and Reception Point method are not defined. Therefore, a method for switching the uplink signaling method between the Single Transmission and Reception Point method and the Multiple Transmission and Reception Point method is required.

[0007] Meanwhile, the technology forming the background of the invention is written to enhance understanding of the background of the invention and may include content that is not prior art already known to a person with ordinary knowledge in the field to which this technology belongs.

[0008] The present disclosure may provide a method and apparatus for effectively performing a user equipment-initiated / event-driven beam report (UE-BR) in a wireless communication system.

[0009] The present disclosure may provide a method and apparatus for transmitting information related to at least one configuration that caused triggering of a UE-BR in a wireless communication system.

[0010] The present disclosure may provide a method and apparatus for determining whether to transmit a first UL channel based on the transmission time of a first UL channel for UE-BR in a wireless communication system.

[0011] The present disclosure may provide a method and apparatus for transmitting a first UL channel based on the priority of a plurality of events for a UE-BR in a wireless communication system.

[0012] The present disclosure may provide a method and apparatus for transmitting a first UL channel based on the detection time of a plurality of events for a UE-BR in a wireless communication system.

[0013] The present disclosure may provide a method and apparatus for transmitting a first UL channel based on the priority of the UE-BR mode in a wireless communication system.

[0014] The technical objectives to be achieved in this disclosure are not limited to those mentioned above, and other unmentioned technical problems may be considered by those skilled in the art to which the technical configuration of this disclosure applies, based on the embodiments of this disclosure described below.

[0015] According to one embodiment of the present disclosure, a method of operation of a terminal in a wireless communication system comprises: receiving configuration information including a plurality of configurations for a UE-BR (user equipment-initiated / event-driven beam report); detecting an event for the UE-BR based on at least one of the plurality of configurations included in the configuration information; transmitting control information for a beam report in a first UL (uplink) channel in response to the detection of the event; and transmitting the beam report in a second UL channel corresponding to the control information, wherein the beam report may include information related to the at least one configuration.

[0016] According to one embodiment of the present disclosure, a method of operation of a base station in a wireless communication system comprises: transmitting configuration information including a plurality of configurations for a UE-BR (user equipment-initiated / event-driven beam report); receiving control information for a beam report according to an event for the UE-BR detected based on at least one of the plurality of configurations in a first UL (uplink) channel; and receiving the beam report in a second UL channel corresponding to the control information, wherein the beam report may include information related to the at least one configuration.

[0017] According to one embodiment of the present disclosure, a terminal in a wireless communication system comprises at least one transceiver, at least one processor, and at least one memory connected to the at least one processor to be operable and storing instructions that control the terminal to perform operations when executed by the processor, wherein the operations include: receiving configuration information including a plurality of configurations for a UE-BR (user equipment-initiated / event-driven beam report); detecting an event for the UE-BR based on at least one configuration among the plurality of configurations included in the configuration information; transmitting control information for a beam report on a first UL (uplink) channel in response to the detection of the event; and transmitting the beam report on a second UL channel corresponding to the control information, wherein the beam report may include information related to the at least one configuration.

[0018] According to one embodiment of the present disclosure, a base station in a wireless communication system comprises at least one transceiver, at least one processor, and at least one memory connected to the at least one processor to be operable and storing instructions that control the base station to perform operations when executed by the processor, wherein the operations include: transmitting configuration information including a plurality of configurations for a UE-BR (user equipment-initiated / event-driven beam report); receiving control information for a beam report according to an event for the UE-BR detected based on at least one of the plurality of configurations on a first UL (uplink) channel; and receiving the beam report on a second UL channel corresponding to the control information, wherein the beam report may include information related to the at least one configuration.

[0019] The proposed technology enables the efficient performance of user equipment-initiated / event-driven beam reporting (UE-BR) in wireless communication systems.

[0020] The effects obtainable from the embodiments of the present disclosure are not limited to those mentioned above, and other unmentioned effects can be clearly derived and understood by a person skilled in the art to which the technical configuration of the present disclosure applies from the description of the embodiments of the present disclosure below. That is, unintended effects resulting from implementing the configuration described in the present disclosure can also be derived by a person skilled in the art from the embodiments of the present disclosure.

[0021] FIG. 1 illustrates a communication system according to an embodiment of the present disclosure.

[0022] FIG. 2 illustrates a block diagram of a communication node according to an embodiment of the present disclosure.

[0023] FIG. 3 illustrates a block diagram of a wireless device according to an embodiment of the present disclosure.

[0024] FIGS. 4a and 4b illustrate block diagrams of a transmission path and a reception path of a communication node according to an embodiment of the present disclosure.

[0025] FIG. 5 illustrates an example of a system frame in a wireless communication system according to an embodiment of the present disclosure.

[0026] FIG. 6 illustrates an example of a subframe in a wireless communication system according to an embodiment of the present disclosure.

[0027] FIG. 7 illustrates an example of a slot in a wireless communication system according to an embodiment of the present disclosure.

[0028] FIG. 8 illustrates the structure of a time-frequency resource in a wireless communication system according to an embodiment of the present disclosure.

[0029] FIG. 9 illustrates an example of a quasi-co location (QCL) relationship between reference signals in a wireless communication system according to an embodiment of the present disclosure.

[0030] FIG. 10 illustrates the concept of a unified TCI (transmission configuration indicator) state in a wireless communication system according to an embodiment of the present disclosure.

[0031] FIG. 11 illustrates an example of a process for transmitting a TCI state in a multi-transmission reception point (M-TRP) structure in a wireless communication system according to an embodiment of the present disclosure.

[0032] FIG. 12 illustrates a first example of a procedure for a UE-BR (user equipment-initiated / event-driven beam report) in a wireless communication system according to one embodiment of the present disclosure.

[0033] FIG. 13 illustrates a second example of a procedure for a UE-BR in a wireless communication system according to one embodiment of the present disclosure.

[0034] FIG. 14 illustrates an example of a procedure for transmitting a beam report in a wireless communication system according to one embodiment of the present disclosure.

[0035] FIG. 15 illustrates an example of a procedure for receiving a beam report in a wireless communication system according to one embodiment of the present disclosure.

[0036] FIG. 16 illustrates an example of a procedure for transmitting a beam report based on a pre-configured standard in a wireless communication system according to one embodiment of the present disclosure.

[0037] FIG. 17 illustrates examples of PUCCH resources associated with a plurality of triggering events in a wireless communication system according to one embodiment of the present disclosure.

[0038] FIG. 18 illustrates an example of a procedure for transmitting a first PUCCH based on priority in a wireless communication system according to one embodiment of the present disclosure.

[0039] The present disclosure is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present disclosure to specific embodiments and should be understood to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present disclosure.

[0040] Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" may mean a combination of a plurality of related described items or any of a plurality of related described items.

[0041] In the present disclosure, "at least one of A and B" may mean "at least one of A or B" or "at least one of one or more combinations of A and B". Additionally, in the present disclosure, "at least one of A and B" may mean "at least one of A or B" or "at least one of one or more combinations of A and B".

[0042] In the present disclosure, (re)transmission may mean "transmission," "retransmission," or "transmission and retransmission"; (re)setting may mean "setting," "resetting," or "setting and resetting"; (re)connection may mean "connection," "reconnection," or "connection and reconnection"; and (re)connection may mean "connection," "reconnection," or "connection and reconnection".

[0043] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0044] The terms used in this disclosure are used merely to describe specific embodiments and are not intended to limit this disclosure. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this disclosure, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0045] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which this disclosure pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this disclosure.

[0046] Hereinafter, preferred embodiments of the present disclosure will be described in more detail with reference to the attached drawings. To facilitate overall understanding in describing the present disclosure, the same reference numerals are used for identical components in the drawings, and redundant descriptions of identical components are omitted. Operations according to combinations of embodiments, extensions of embodiments, and / or modifications of embodiments may be performed, as well as the embodiments explicitly described in the present disclosure. The performance of some operations may be omitted, and the order of operations may be changed.

[0047] In the embodiments, even when a method performed at a first communication node among the communication nodes (e.g., transmission or reception of a signal) is described, the corresponding second communication node may perform a method corresponding to the method performed at the first communication node (e.g., reception or transmission of a signal). That is, when the operation of a UE (user equipment) is described, the corresponding base station may perform an operation corresponding to the operation of the UE. Conversely, when the operation of a base station is described, the corresponding UE may perform an operation corresponding to the operation of the base station.

[0048] A base station may be referred to as Node B, evolved Node B, gNode B (next generation node B), gNB, device, apparatus, node, communication node, BTS (base transceiver station), RRH (radio remote head), TRP (transmission reception point), RU (radio unit), RSU (road side unit), radio transceiver, access point, access node, etc. A UE may be referred to as terminal, device, apparatus, node, communication node, end node, access terminal, mobile terminal, station, subscriber station, mobile station, portable subscriber station, OBU (on-broad unit), etc.

[0049] In the present disclosure, signaling may be at least one of upper-layer signaling, MAC signaling, or PHY (physical) signaling. A message used for upper-layer signaling may be referred to as an "upper-layer message" or an "upper-layer signaling message." A message used for MAC signaling may be referred to as a "MAC message" or a "MAC signaling message." A message used for PHY signaling may be referred to as a "PHY message" or a "PHY signaling message." Upper-layer signaling may refer to the transmission and reception operations of system information (e.g., MIB (master information block), SIB (system information block)) and / or RRC (radio resource control) messages. MAC signaling may refer to the transmission and reception operations of MAC CE (control element). PHY signaling may refer to the transmission and reception operations of control information (e.g., DCI (downlink control information), UCI (uplink control information), SCI (sidelink control information)).

[0050] In the present disclosure, "setting an operation (e.g., a transmission operation)" may mean that "setting information for said operation (e.g., an information element, a parameter)" and / or "information directing the performance of said operation" is signaled. "Setting an information element (e.g., a parameter)" may mean that said information element is signaled. In the present disclosure, "signal and / or channel" may mean a signal, a channel, or "signal and channel," and "signal" may be used to mean "signal and / or channel."

[0051] The communication networks to which the embodiments are applied are not limited to those described below, and the embodiments may be applied to various communication networks (e.g., 4G communication networks, 5G communication networks, and / or 6G communication networks). Here, the term "communication network" may be used interchangeably with "communication system."

[0052] FIG. 1 illustrates a communication system according to an embodiment of the present disclosure.

[0053] Referring to FIG. 1, the communication system (100) may include a plurality of communication nodes (110-1, 110-2, 110-3, 120-1, 120-2, 130-1, 130-2, 130-3, 130-4, 130-5, 130-6). Additionally, the communication system (100) may further include a core network (e.g., an S-GW (serving-gateway), a P-GW (PDN (packet data network)-gateway), and an MME (mobility management entity)). If the communication system (100) is a 5G communication system (e.g., a new radio (NR) system), the core network may include an AMF (access and mobility management function), a UPF (user plane function), an SMF (session management function), etc.

[0054] Multiple communication nodes (110 to 130) can support communication protocols defined in 3GPP (3rd generation partnership project) standards (e.g., LTE communication protocol, LTE-A communication protocol, NR communication protocol, etc.). Multiple communication nodes (110 to 130) can support CDMA (code division multiple access) technology, WCDMA (wideband CDMA) technology, TDMA (time division multiple access) technology, FDMA (frequency division multiple access) technology, OFDM (orthogonal frequency division multiplexing) technology, Filtered OFDM technology, CP (cyclic prefix)-OFDM technology, DFT-s-OFDM (discrete Fourier transform-spread-OFDM) technology, OFDMA (orthogonal frequency division multiple access) technology, SC (single carrier)-FDMA technology, NOMA (non-orthogonal multiple access) technology, GFDM (generalized frequency division multiplexing) technology, FBMC (filter bank multi-carrier) technology, UFMC (universal filtered multi-carrier) technology, SDMA (space division multiple access) technology, etc. Each of the multiple communication nodes may have the following structure.

[0055] FIG. 2 illustrates a block diagram of a communication node according to an embodiment of the present disclosure. The structure exemplified in FIG. 2 may be understood as the structure of at least a part of a communication node, a base station, or a core network entity. The wireless device (200) exemplified in FIG. 2 may be a mobile terminal such as a smartphone, a tablet PC, or a wearable device, but is not limited thereto.

[0056] Referring to FIG. 2, the wireless device (200) may include at least one control unit (210), at least one memory (220), at least one power supply unit (230), at least one transceiver unit (240), at least one input unit (250), at least one output unit (260) and / or at least one antenna (270).

[0057] The control unit (210) can control the memory (220) and / or the transmission / reception unit (240) and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operation sequences disclosed in this disclosure. The memory (220) may be connected to the control unit (210) and may store various information related to the operation of the control unit (210). For example, the memory (220) may store software code including instructions for performing some or all of the controls controlled by the control unit (210) or for performing the descriptions, functions, procedures, proposals, methods, and / or operation sequences disclosed in this disclosure. The configuration of the memory is not limited in a particular way. For example, it may be configured as at least one of read-only memory (ROM) and random access memory (RAM).

[0058] At least one control unit (210) may be referred to as a controller, microcontroller, microprocessor, or microcomputer. The descriptions, functions, procedures, proposals, methods, and / or flowcharts of operations disclosed in this disclosure may be implemented using firmware or software in the form of code, instructions, and / or sets of instructions. Here, the firmware or software may execute other programs stored in memory (220), such as an OS. The control unit (210) may be implemented to support differently weighted beamforming or directional routing operations to effectively control the outgoing signal from at least one antenna (270) to a desired direction.

[0059] Additionally, at least one control unit (210) may be coupled with a backhaul or network interface. The wireless device (200) may communicate with other wireless devices through the backhaul or network interface. The control unit (210) may include at least one processor. The processor may mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which the methods according to embodiments of the present disclosure are performed.

[0060] At least one transceiver (240) may be connected to a control unit (210) and may transmit and / or receive a wireless signal through at least one antenna (270). The transceiver (240) may include a transmitter and / or a receiver. At least one transceiver (240) may transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or operation flowcharts of the present disclosure to at least one other device. For example, at least one transceiver (240) may be connected to at least one control unit (210) and may transmit and receive wireless signals. Additionally, at least one control unit (210) may control at least one transceiver (240) to transmit user data, control information, or wireless signals to at least one other device. At least one transmitter (240) may receive a signal transmitted by another wireless device from at least one antenna (270). Additionally, at least one transceiver (24) can down-convert or up-convert the received signal to generate a baseband signal. At least one antenna (270) may be a plurality of physical antennas or a plurality of logical antennas (e.g., antenna ports).

[0061] The input unit (250) can acquire information such as user input, video, and audio, and may include various input means such as various mechanical / electronic input means, cameras, and microphones. The output unit (260) is intended to provide information to a user by generating output related to sight, hearing, or touch, and may include a display, speaker, vibration module, etc. The wireless device (200) supplies power through the power unit (230), and the power unit (230) may include a wired / wireless charging circuit, battery, etc.

[0062] Referring again to FIG. 1, the communication system (100) may include a plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) and a plurality of terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6). Each of the first base station (110-1), the second base station (110-2), and the third base station (110-3) may form a macro cell. Each of the fourth base station (120-1) and the fifth base station (120-2) may form a small cell. The fourth base station (120-1), the third terminal (130-3), and the fourth terminal (130-4) may be located within the cell coverage of the first base station (110-1). The second terminal (130-2), the fourth terminal (130-4), and the fifth terminal (130-5) may be located within the cell coverage of the second base station (110-2). The fifth base station (120-2), the fourth terminal (130-4), the fifth terminal (130-5), and the sixth terminal (130-6) may be located within the cell coverage of the third base station (110-3). The first terminal (130-1) may be located within the cell coverage of the fourth base station (120-1). The sixth terminal (130-6) may be located within the cell coverage of the fifth base station (120-2).

[0063] Here, each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be referred to as NB (NodeB), eNB (evolved NodeB), gNB, ABS (advanced base station), HR-BS (high reliability-base station), BTS (base transceiver station), radio base station, radio transceiver, access point, access node, RAS (radio access station), MMR-BS (mobile multihop relay-base station), RS (relay station), ARS (advanced relay station), HR-RS (high reliability-relay station), HNB (home NodeB), HeNB (home eNodeB), RSU (road side unit), RRH (radio remote head), TP (transmission point), TRP (transmission and reception point), etc.

[0064] Each of the multiple terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) may be referred to as UE (user equipment), TE (terminal equipment), AMS (advanced mobile station), HR-MS (high reliability-mobile station), terminal, access terminal, mobile terminal, station, subscriber station, mobile station, portable subscriber station, node, device, OBU (on board unit), etc.

[0065] Meanwhile, each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may operate in different frequency bands or in the same frequency band. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be connected to each other via an ideal backhaul link or a non-ideal backhaul link, and may exchange information with each other via an ideal backhaul link or a non-ideal backhaul link. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be connected to a core network via an ideal backhaul link or a non-ideal backhaul link. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can transmit a signal received from the core network to the corresponding terminal (130-1, 130-2, 130-3, 130-4, 130-5, 130-6), and can transmit a signal received from the corresponding terminal (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) to the core network.

[0066] In addition, each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can support MIMO transmission (e.g., SU (single user)-MIMO, MU (multi user)-MIMO, massive MIMO, etc.), CoMP (coordinated multipoint) transmission, carrier aggregation (CA) transmission, transmission in an unlicensed band, sidelink communication (e.g., D2D (device to device communication), ProSe (proximity services)), IoT (Internet of Things) communication, dual connectivity (DC), etc. Here, each of the plurality of terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) can perform an operation corresponding to the base station (110-1, 110-2, 110-3, 120-1, 120-2) and an operation supported by the base station (110-1, 110-2, 110-3, 120-1, 120-2). For example, the second base station (110-2) can transmit a signal to the fourth terminal (130-4) based on the SU-MIMO method, and the fourth terminal (130-4) can receive a signal from the second base station (110-2) based on the SU-MIMO method. Alternatively, the second base station (110-2) can transmit a signal to the fourth terminal (130-4) and the fifth terminal (130-5) based on the MU-MIMO method, and each of the fourth terminal (130-4) and the fifth terminal (130-5) can receive a signal from the second base station (110-2) by the MU-MIMO method.

[0067] Each of the first base station (110-1), the second base station (110-2), and the third base station (110-3) can transmit a signal to the fourth terminal (130-4) based on the CoMP method, and the fourth terminal (130-4) can receive a signal from the first base station (110-1), the second base station (110-2), and the third base station (110-3) by the CoMP method. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can transmit and receive signals based on the CA method with terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) within its cell coverage area. Each of the first base station (110-1), the second base station (110-2), and the third base station (110-3) can control sidelink communication between the fourth terminal (130-4) and the fifth terminal (130-5), and each of the fourth terminal (130-4) and the fifth terminal (130-5) can perform sidelink communication by controlling each of the second base station (110-2) and the third base station (110-3).

[0068] Meanwhile, a more detailed example of the structure of the control unit (210) and / or the transceiver unit (240) is shown in FIG. 3. FIG. 3 illustrates a block diagram of a wireless device according to an embodiment of the present disclosure. FIG. 3 illustrates the structure of a first wireless device (300a) and a second wireless device (300b) that transmit and / or receive a signal. In FIG. 3, each of the first wireless device (300a) and the second wireless device (300b) may be a base station or a UE.

[0069] Referring to FIG. 3, the first wireless device (300a) can transmit a signal to the second wireless device (300b). The transmission processor (311) included in the first wireless device (300a) can receive data (e.g., data unit) from a data source (310). The transmission processor (311) can receive control information from a controller (316). The control information may include at least one of system information, RRC configuration information (e.g., information set by RRC signaling), MAC control information (e.g., MAC CE), or PHY control information (e.g., DCI, SCI).

[0070] The transmitting processor (311) can generate data symbol(s) by performing processing operations on data (e.g., encoding operations, symbol mapping operations, etc.). The transmitting processor (311) can generate control symbol(s) by performing processing operations on control information (e.g., encoding operations, symbol mapping operations, etc.). Additionally, the transmitting processor (311) can generate synchronization / reference symbol(s) for synchronization signals and / or reference signals.

[0071] The Tx MIMO processor (312) can perform spatial processing operations (e.g., precoding operations) on data symbol(s), control symbol(s), and / or synchronization / reference symbol(s). The output of the Tx MIMO processor (312) (e.g., a symbol stream) can be provided to modulators (MODs) included in transceivers (313a to 313t). The modulators (MODs) can perform processing operations on the symbol stream to generate modulated symbols and perform additional processing operations on the modulated symbols (e.g., analog conversion operations, amplification operations, filtering operations, up-conversion operations) to generate signals. The signals generated by the modulators (MODs) of the transceivers (313a to 313t) can be transmitted through antennas (314a to 314t).

[0072] Signals transmitted by the first wireless device (300a) can be received at the antennas (364a to 364r) of the second wireless device (300b). Signals received at the antennas (364a to 364r) can be provided to demodulators (DEMODs) included in the transceivers (363a to 363r). The demodulators (DEMODs) can obtain samples by performing processing operations on the signals (e.g., filtering, amplification, down-conversion, digital conversion). The demodulators (DEMODs) can obtain symbols by performing additional processing operations on the samples. The MIMO detector (362) can perform MIMO detection operations on the symbols. The receiving processor (361) can perform processing operations on the symbols (e.g., deinterleaving, decoding). The output of the receiving processor (361) can be provided to the data sink (360) and the controller (366). For example, data can be provided to the data sink (360), and control information can be provided to the controller (366).

[0073] Meanwhile, the second wireless device (300b) can transmit a signal to the first wireless device (300a). The transmission processor (368) included in the second wireless device (300b) can receive data (e.g., a data unit) from a data source (367) and can generate data symbol(s) by performing a processing operation on the data. The transmission processor (368) can receive control information from a controller (366) and can generate control symbol(s) by performing a processing operation on the control information. Additionally, the transmission processor (368) can generate reference symbol(s) by performing a processing operation on a reference signal.

[0074] The Tx MIMO processor (369) can perform spatial processing operations (e.g., precoding operations) on data symbol(s), control symbol(s), and / or reference symbol(s). The output of the Tx MIMO processor (369) (e.g., a symbol stream) can be provided to modulators (MODs) included in the transceivers (363a to 363t). The modulators (MODs) can perform processing operations on the symbol stream to generate modulated symbols and perform additional processing operations on the modulated symbols (e.g., analog conversion operations, amplification operations, filtering operations, up-conversion operations) to generate signals. The signals generated by the modulators (MODs) of the transceivers (363a to 363t) can be transmitted through the antennas (364a to 364t).

[0075] Signals transmitted by the second wireless device (300b) can be received at the antennas (314a to 314r) of the first wireless device (300a). Signals received at the antennas (314a to 314r) can be provided to demodulators (DEMODs) included in the transceivers (313a to 313r). The demodulators (DEMODs) can obtain samples by performing processing operations on the signals (e.g., filtering operation, amplification operation, down-conversion operation, digital conversion operation). The demodulators (DEMODs) can obtain symbols by performing additional processing operations on the samples. The MIMO detector (320) can perform MIMO detection operations on the symbols. The receiving processor (319) can perform processing operations on the symbols (e.g., deinterleaving operation, decoding operation). The output of the receiving processor (319) can be provided to the data sink (318) and the controller (316). For example, data can be provided to the data sink (318), and control information can be provided to the controller (316).

[0076] The memories (315 and 365) may store data, control information, and / or program code. The scheduler (317) may perform scheduling operations for communication. The processors (311, 312, 319, 361, 368, 369) and controllers (316, 366) shown in FIG. 3 may be the processor (210) shown in FIG. 2 and may be used to perform the methods described in this disclosure.

[0077] FIGS. 4a and 4b illustrate block diagrams of a transmission path and a reception path of a communication node according to an embodiment of the present disclosure.

[0078] Referring to FIGS. 4a and 4b, a transmission path (410) may be implemented at a communication node that transmits a signal, and a reception path (420) may be implemented at a communication node that receives a signal. The transmission path (410) may include a channel coding and modulation block (411), an S-to-P (serial-to-parallel) block (512), an N IFFT (Inverse Fast Fourier Transform) block (413), a P-to-S (parallel-to-serial) block (414), a CP (cyclic prefix) addition block (415), and an UC (up-converter) (UC) (416). The reception path (420) may include a DC (down-converter) (421), a CP removal block (422), an S-to-P block (423), an N FFT block (424), a P-to-S block (425), and a channel decoding and demodulation block (426). Here, N can be a natural number.

[0079] Information bits in the transmission path (410) can be input to the channel coding and modulation block (411). The channel coding and modulation block (411) can perform coding operations (e.g., LDPC (low-density parity check) (LDPC) coding operations, polar coding operations, etc.) and modulation operations (e.g., QPSK (Quadrature Phase Shift Keying), QAM (Quadrature Amplitude Modulation), etc.) on the information bits. The output of the channel coding and modulation block (411) may be a sequence of modulation symbols.

[0080] The S-to-P block (412) can convert modulated symbols in the frequency domain into parallel symbol streams to generate N parallel symbol streams. N can be the IFFT size or the FFT size. The N IFFT block (413) can generate signals in the time domain by performing an IFFT operation on the N parallel symbol streams. The P-to-S block (414) can convert the output of the N IFFT block (413) (e.g., parallel signals) into a serial signal to generate a serial signal.

[0081] The CP addition block (415) can insert CP into the signal. The UC (416) can up-convert the frequency of the output of the CP addition block (415) to an RF (radio frequency) frequency. Additionally, the output of the CP addition block (415) can be filtered in the baseband before up-conversion.

[0082] A signal transmitted from the transmission path (410) can be input to the reception path (420). The operation in the reception path (420) may be the inverse operation of the operation in the transmission path (410). The DC (421) may down-convert the frequency of the received signal to a baseband frequency. The CP removal block (422) may remove CP from the signal. The output of the CP removal block (422) may be a serial signal. The S-to-P block (423) may convert the serial signal into parallel signals. The N FFT block (424) may generate N parallel signals by performing an FFT algorithm. The P-to-S block (425) may convert the parallel signals into a sequence of modulation symbols. The channel decoding and demodulation block (426) may perform a demodulation operation on the modulation symbols and perform a decoding operation on the result of the demodulation operation to restore the data.

[0083] In FIGS. 4a and 4b, Discrete Fourier Transform (DFT) and Inverse DFT (IDFT) may be used instead of FFT and IFFT. In FIGS. 4a and 4b, each of the blocks (e.g., components) may be implemented by at least one of hardware, software, or firmware. For example, in FIGS. 4a and 4b, some blocks may be implemented by software, and the remaining blocks may be implemented by hardware or a "combination of hardware and software." In FIGS. 4a and 4b, one block may be subdivided into multiple blocks, multiple blocks may be integrated into one block, some blocks may be omitted, and blocks supporting other functions may be added.

[0084] FIG. 5 illustrates an example of a system frame in a wireless communication system according to an embodiment of the present disclosure.

[0085] Referring to FIG. 5, time resources in a communication system can be divided into frames. For example, system frames can be set consecutively in the time domain of the communication system. The length of a system frame can be 10 ms (millisecond). The system frame number (SFN) can be set from #0 to #1023. In this case, 1024 system frames can be repeated in the time domain of the communication system. For example, the SFN of a system frame after system frame #1023 can be #0.

[0086] A single system frame may contain two half frames. The length of a single half frame may be 5ms. A half frame located at the beginning of the system frame may be referred to as "Half Frame #0", and a half frame located at the end of the system frame may be referred to as "Half Frame #1". A system frame may contain 10 subframes. The length of a single subframe may be 1ms. Within a single system frame, the 10 subframes may be referred to as "Subframe #0-9".

[0087] FIG. 6 illustrates an example of a subframe in a wireless communication system according to an embodiment of the present disclosure.

[0088] Referring to FIG. 6, one subframe may contain n slots, where n is a natural number. Thus, one subframe may consist of one or more slots.

[0089] FIG. 7 illustrates an example of a slot in a wireless communication system according to an embodiment of the present disclosure.

[0090] Referring to FIG. 7, a slot may contain one or more symbols. A slot illustrated in FIG. 7 may contain 14 symbols. The length of the slot may vary depending on the number of symbols included in the slot and the length of the symbols. Alternatively, the length of the slot may vary depending on the numerology.

[0091] Numerals applied to physical signals and channels in a communication system may be variable. Numerals may be variable to meet various technical requirements of the communication system. In a communication system where CP (cyclic prefix) based OFDM waveform technology is applied, numerals may include subcarrier spacing and CP length (or CP type). Table 1 may be an example of a method for configuring numerals for a CP-OFDM based communication system. Depending on the frequency band in which the communication system operates, at least some of the numerals in Table 1 may be supported. Additionally, numerals not listed in [Table 1] may be further supported in the communication system.

[0092] Subcarrier Spacing 15kHz 30kHz 60kHz 120kHz 240kHz 480kHz OFDM Symbol Length [μs] 66.733.316.78.34.22.1 CP Length [us] 4.762.381.190.600.300.151 Number of OFDM Symbols in ms 142856112224448

[0093] When the subcarrier spacing is 15 kHz (e.g., μ=0), the slot length may be 1 ms. In this case, one system frame may contain 10 slots. When the subcarrier spacing is 30 kHz (e.g., μ=1), the slot length may be 0.5 ms. In this case, one system frame may contain 20 slots.

[0094] When the subcarrier spacing is 60 kHz (e.g., μ=2), the slot length may be 0.25 ms. In this case, one system frame may contain 40 slots. When the subcarrier spacing is 120 kHz (e.g., μ=3), the slot length may be 0.125 ms. In this case, one system frame may contain 80 slots. When the subcarrier spacing is 240 kHz (e.g., μ=4), the slot length may be 0.0625 ms. In this case, one system frame may contain 160 slots.

[0095] The symbol can be set as a downlink (DL) symbol, a flexible (FL) symbol, or an uplink (UL) symbol. A slot consisting only of DL symbols may be referred to as a "DL slot," a slot consisting only of FL symbols may be referred to as a "FL slot," and a slot consisting only of UL symbols may be referred to as a "UL slot."

[0096] The slot format can be semi-fixed by upper-layer signaling (e.g., RRC signaling). Information indicating the semi-fixed slot format may be included in system information, and the semi-fixed slot format can be set cell-specifically. Additionally, the semi-fixed slot format can be additionally set per terminal through terminal-specific upper-layer signaling (e.g., RRC signaling). The flexible symbols of the cell-specific slot format can be overridden as downlink symbols or uplink symbols by the terminal-specific upper-layer signaling. Furthermore, the slot format can be dynamically indicated by physical layer signaling (e.g., the SFI (slot format indicator) included in the DCI). The semi-fixed slot format can be overridden by the dynamically indicated slot format. For example, the semi-fixed flexible symbols can be overridden as downlink symbols or uplink symbols by the SFI.

[0097] The reference signal may be a CSI-RS (channel state information-reference signal), SRS (sounding reference signal), DM-RS (demodulation-reference signal), PT-RS (phase tracking-reference signal), etc. The channel may be a PBCH (physical broadcast channel), PDCCH (physical downlink control channel), PDSCH (physical downlink shared channel), PUCCH (physical uplink control channel), PUSCH (physical uplink shared channel), PSCCH (physical sidelink control channel), PSSCH (physical sidelink shared channel), etc. In the present disclosure, the control channel may mean PDCCH, PUCCH, or PSCCH, and the data channel may mean PDSCH, PUSCH, or PSSCH.

[0098] FIG. 8 illustrates the structure of a time-frequency resource in a wireless communication system according to an embodiment of the present disclosure.

[0099] Referring to FIG. 8, a resource consisting of one symbol (e.g., an OFDM symbol) in the time domain and one subcarrier in the frequency domain can be defined as a "RE (resource element)." A resource consisting of one OFDM symbol in the time domain and K subcarriers in the frequency domain can be defined as a "REG (resource element group)." A REG can include K REs. A REG can be used as the basic unit of resource allocation in the frequency domain. K can be a natural number. For example, K can be 12. N can be a natural number. In the slot illustrated in FIG. 7, N can be 14. N OFDM symbols can be used as the basic unit of resource allocation in the time domain.

[0100] In the present disclosure, RB may mean a common RB (CRB). Alternatively, RB may mean a PRB or a virtual RB (VRB). In a communication system, a CRB may mean an RB that constitutes a set of consecutive RBs (e.g., a common RB grid) based on a reference frequency (e.g., point A). A carrier and / or bandwidth portion may be placed on the common RB grid. That is, the carrier and / or bandwidth portion may be composed of CRB(s). An RB or CRB constituting the bandwidth portion may be referred to as a PRB, and within the bandwidth portion, a CRB index may be appropriately converted to a PRB index.

[0101] Downlink data may be transmitted via PDSCH. A base station may transmit configuration information of the PDSCH (e.g., scheduling information) to a terminal via PDCCH. A terminal may obtain the configuration information of the PDSCH by receiving the PDCCH (e.g., downlink control information (DCI)). For example, the configuration information of the PDSCH may include a modulation coding scheme (MCS) used for the transmission and reception of the PDSCH, time resource information of the PDSCH, frequency resource information of the PDSCH, feedback resource information for the PDSCH, etc. PDSCH may refer to a radio resource where downlink data is transmitted and received. Alternatively, PDSCH may refer to the downlink data itself. PDCCH may refer to a radio resource where downlink control information (e.g., DCI) is transmitted and received. Alternatively, PDCCH may refer to the downlink control information itself.

[0102] The terminal may perform a monitoring operation for the PDCCH to receive the PDSCH transmitted from the base station. The base station may notify the terminal of configuration information for the monitoring operation of the PDCCH using a higher-layer message (e.g., a radio resource control (RRC) message). The configuration information for the monitoring operation of the PDCCH may include CORESET (control resource set) information and search space information.

[0103] CORESET information may include PDCCH DMRS (demodulation reference signal) information, PDCCH precoding information, PDCCH occasion information, etc. The PDCCH DMRS may be a DMRS used to demodulate the PDCCH. A PDCCH occasion may be an area where the PDCCH can exist. That is, a PDCCH occasion may be an area where the DCI can be transmitted. A PDCCH occasion may be referred to as a PDCCH candidate. PDCCH occasion information may include time resource information and frequency resource information of the PDCCH occasion. In the time domain, the length of the PDCCH occasion may be indicated in symbol units. In the frequency domain, the size of the PDCCH occasion may be indicated in RB units (e.g., PRB (physical resource block) units or CRB (common resource block) units).

[0104] The search space information may include a CORESET ID (identifier) ​​associated with the search space, the period of PDCCH monitoring, and / or an offset. The period and offset of PDCCH monitoring may each be specified in slots. Additionally, the search space information may further include the index of the symbol at which the PDCCH monitoring operation begins.

[0105] A base station may configure a Bandwidth Part (BWP) for downlink communication. BWPs may be configured differently for each terminal. The base station may notify the terminal of the BWP configuration information using upper-layer signaling. Upper-layer signaling may refer to "transmission operations of system information" and / or "transmission operations of Radio Resource Control (RRC) messages." One or more BWPs may be configured for a single terminal. The terminal may receive BWP configuration information from the base station and identify the BWP(s) configured by the base station based on the BWP configuration information. If multiple BWPs are configured for downlink communication, the base station may activate one or more of the multiple BWPs. The base station may transmit the configuration information of the activated BWP(s) to the terminal using at least one of upper-layer signaling, a Medium Access Control (MAC) Control Element (CE), or a DCI. The base station may perform downlink communication using the activated BWP(s). The terminal can identify the activated BWP(s) by receiving configuration information of the activated BWP(s) from the base station, and can perform a downlink reception operation on the activated BWP(s).

[0106] Multiple Transmission and Reception Point (MTRP) technology refers to a technique in which a base station (e.g., gNB) communicates with a terminal by utilizing multiple physically separated Transmission and Reception Points (TRPs). By utilizing multiple TRPs, MTRP technology can resolve the issue of reduced Quality of Service (QoS) caused by terminals located at the cell edge being far from the base station, while simultaneously resolving inter-cell interference issues arising from base stations located in different cells. Furthermore, MTRP technology can serve the role of providing an additional communication path, specifically a Non-Line-of-Sight (NLOS) path, from the base station in cases where the Line-of-Sight (LOS) path from the base station is limited, such as in the millimeter wave band.

[0107] In the standard, MTRP technology is divided into Coherent Joint Transmission (CJT) and Non-Coherent Joint Transmission (NCJT) methods. The CJT method allows two or more TRPs to cooperate in a synchronized manner to support data transmission to a single terminal, based on a stable backhaul link between the TRP and the connected base station. On the other hand, the NCJT method is a method in which, in a situation where two or more TRPs support a single terminal, scheduling, precoding matrix selection, modulation, and coding schemes are determined without mutual cooperation among the TRPs.

[0108] Beam management for TRPs in 5G NR can be defined as a set of L1 / L2 procedures that find or maintain the optimal beam required for the transmission and reception of the TRP and the terminal, respectively. Beam management procedures can be broadly classified into four categories as follows.

[0109] 1) Beam determination

[0110] 2) Beam measurement

[0111] 3) Beam reporting

[0112] 4) Beam sweeping

[0113] Here, the TRP and the UE can utilize the reciprocity characteristics of the downlink (DL) and uplink (UL) channels during beam management. For example, the UE can utilize values ​​measured from the receive beams (Rx beams) of the DL channel when configuring the transmit beam (Tx beam). Additionally, the UE can utilize values ​​measured from the transmit beams (Tx beams) of the UL channel when configuring the receive beam (Rx beam). These transmit and receive beam configuration procedures can be performed in the same way for the base station as for the UE. In particular, a transmission configuration indicator (TCI) has been introduced for beam management related to analog beamforming. The TCI can be used to configure the beam to be used for transmission on a specific channel and / or signal, e.g., PDSCH and / or CSI-RS and / or PDCCH. The base station can dynamically instruct the UE on quasi-colocation (QCL) information by transmitting the TCI through downlink control information (DCI).

[0114] The statement that two antenna ports are quasi-colocated means that the channel characteristics of a symbol transmitted from one antenna port can be inferred from the channel of a symbol transmitted from another antenna port. For the convenience of explanation below, when two antenna ports are quasi-colocated, the two antenna ports will be referred to as being in a QCL relationship.

[0115] FIG. 9 illustrates an example of a quasi-co location (QCL) relationship between reference signals in a wireless communication system according to an embodiment of the present disclosure. Referring to FIG. 9, information regarding the TCI state can be generated by extending the application of the QCL relationship between reference signals of 5G or lower.

[0116] A synchronization signal block (SSB) can be used by a terminal to synchronize with a network and acquire basic information. The SSB may have a QCL relationship with the tracking reference signal (TRS). Therefore, when receiving the TRS, at least one of the Doppler shift, delay averaging, and spatial characteristics of the SSB may be utilized.

[0117] CSI-RS (Channel State Information - Reference Signal): CSI-RS can be used by a network to determine the characteristics of a wireless channel. Two types of CSI-RS may exist. CSI-RS (CSI ACQ) can be used for CSI reception, and CSI-RS (BM) can be used for beam management (BM).

[0118] SSB and CSI-RS (BM) may have a QCL relationship with CSI-RS (CSI ACQ), and at least one of the average and spatial characteristics of Doppler shift and delay may be used for receiving CSI-RS (CSI ACQ).

[0119] CSI-RS(BM) and SSB may have a QCL relationship with PDCCH DMRS (physical downlink control channel demodulation reference signal), and at least one of Doppler shift / spread and delay average / spread and spatial characteristics may be used for receiving PDCCH DMRS.

[0120] SSB, CSI-RS(BM) and CSI-RS(CSI ACQ) may have a QCL relationship with PDSCH DMRS, and at least one of the Doppler shift / spread and the average / spread and spatial characteristics of the delay may be used for reception of PDSCH DMRS.

[0121] 3GGP Rel-17 introduced a TCI configuration method utilizing a unified TCI pool, that is, a unified TCI framework, to reduce signaling overhead for QCL configuration of DL and / or UL channels and to simplify multi-beam operations compared to releases prior to 3GGP Rel-16.

[0122] According to the integrated TCI framework, a base station can pre-configure a common TCI pool that can be used (or applied) commonly to DL channels and UL channels via RRC signaling. Furthermore, according to the integrated TCI framework, the base station can directly direct the TCI for DL ​​channels and UL channels from the configured common TCI pool using Medium Access Control (MAC) control elements (CE) (MAC-CE) and downlink control information (DCI). Additionally, according to the integrated TCI framework, the base station can support updates to the common TCI state.

[0123] A common TCI state can be indicated (or set) for multiple component carriers (CCs). Among the multiple CCs, a reference CC may be additionally set, and TCI updates for other CCs existing in the indicated list can be performed simultaneously through an update command for the reference CC.

[0124] At this time, there are broadly three methods for setting the state of the TCI for the DL channel and UL channel as follows.

[0125] A. Method for joint TCI state indication common to DL / UL channels

[0126] B. Method for DL ​​channel separate TCI state indication for setting TCI separately for a DL channel and

[0127] C. Method for separate TCI state indication for UL channel

[0128] Looking at the three methods above from a broader perspective, they can be classified into a joint TCI status indication method that provides common indications for the DL channel and UL channel, and a separate TCI status indication method that sets TCIs separately for the DL channel or UL channel, respectively. The fundamental difference between the two classification methods above may be whether or not mutuality exists between the DL channel and the UL channel.

[0129] The integrated TCI framework was designed with the goal of a single TRP (sTRP) in 3GPP Rel-17. However, in 3GPP Rel-18, it aims to expand to a multi-TRP (mTRP) system.

[0130] TCI states may be used to convey QCL relationships to terminals. TCI states contain information regarding QCL relationships and can be conveyed via DCI. Section 5.1.5 of 3GPP TS 38.214 defines the procedure for conveying information regarding QCLs as follows.

[0131]

[0132]

[0133]

[0134]

[0135]

[0136]

[0137]

[0138]

[0139]

[0140]

[0141]

[0142]

[0143]

[0144] As described above, the UE can be configured with lists of TCI-State settings via upper-layer parameters (e.g., PDSCH-Config). The UE can decode PDSCH using the lists of TCI-State settings. Each TCI state may include parameters that configure the QCL relationship between one or two downlink reference signals and the DM-RS port of the PDSCH, the DM-RS port of the PDCCH, or the CSI-RS port(s) of the CSI-RS resource. The QCL can be configured for the first DL RS using the upper-layer parameter qcl-Type1 and for the second DL RS using qcl-Type2. The QCL type for each of the two DL RSs can be configured differently regardless of whether they are DL RSs with the same reference or different DL RSs. The QCL type corresponding to each DL RS can be configured by the upper-layer parameter (e.g., qcl-Type in QCL-Info). The QCL type can have one of the following values.

[0145] - typeA: {Doppler shift, Doppler spread, average delay, delay spread}

[0146] - typeB: {Doppler shift, Doppler spread}

[0147] - typeC: {Doppler shift, average delay}

[0148] - typeD: {Spatial Rx parameter}

[0149] Here, the Spatial RX parameter can refer to any one of various parameters, such as Angle of Arrival (AoA), Power Angular Spectrum (PAS) of AoA, Angle of Departure (AoD), PAS of AoD, transmit / receive channel correlation, transmit / receive beamforming, and spatial channel correlation.

[0150] The base station can transmit configuration information regarding whether to apply the information in the TCI (transmission configuration indication) field included in the DCI (downlink control information) to the terminal through upper layer signaling.

[0151] Additionally, the terminal may receive information regarding TCI states or pairs of TCI states. For example, a base station may transmit multiple TCI states to the terminal via RRC signaling and may set some of these as TCI states for CORESET. The terminal may receive an enable command. The enable command may be used to map TCI state(s) and / or pairs of TCI states to code points in the DCI field 'transmission configuration indication'.

[0152] In addition, as shown in FIG. 10 below, a beam can be configured to be set by integrating multiple channels or reference signals through a unified TCI state. FIG. 10 illustrates the concept of a unified TCI (transmission configuration indicator) state in a wireless communication system according to an embodiment of the present disclosure. Without the need for the base station to transmit the TCI state to the terminal for each channel, the base station can transmit information regarding beam configuration for CSI-RS, CORESET, PDSCH, PUSCH, PUCCH, SRS, etc. to the terminal through the unified TCI state. Whether the unified TCI state is activated can be transmitted to the terminal explicitly or implicitly. For example, if there is no TCI-State or TCI-UL-State configuration in the BWP of a CC, the terminal can apply the TCI-State or TCI-UL-State configuration from the reference BWP of a reference CC configured by the unified TCI-StateRef.

[0153] A multiple transmission and reception point (M-TRP) technique, in which communication is performed through multiple transmitting and receiving nodes, can be proposed. The M-TRP technique can be classified into two types: a single downlink control information (S-DCI) technique, which controls transmission and reception through multiple nodes using a single control information, and a multiple downlink control information (M-DCI) technique, which transmits information for each node separately. Furthermore, the procedure for transmitting TCI information may vary depending on whether the TCI information regarding the uplink and downlink is configured separately or jointly.

[0154] FIG. 11 illustrates an example of a process for transmitting a TCI state in a multi-transmission reception point (M-TRP) structure in a wireless communication system according to an embodiment of the present disclosure.

[0155] Referring to Fig. 11, configuration types related to TCI are classified into separate and joint types. The separate type method is a method in which the TCI state is set through separate TCI state lists for the uplink and downlink, respectively, and the joint type method is a method in which the TCI state is set through a joint TCI state list for the uplink and downlink. The base station can transmit the configuration type related to the integrated TCI to the terminal through the unifiedTCI-StateType within ServingCellConfig. Additionally, the base station can transmit information regarding the resource set for reference signals to the terminal through PDSCH-Config, and PDSCH-Config can be included in the BWP-Downlink IE.

[0156] Additionally, the terminal can be configured with a list of up to 128 TCI state settings via upper layer parameters (e.g., dl-OrJointTCI-StateList in PDSCH-Config). The list of TCI settings can be used to provide criteria for determining ULTX spatial filters for dynamic-grant and configuration-grant-based PUSCH and PUCCH resources and SRS in BWP / CC.

[0157] Among the TCI state settings, the TCI state settings that are activated can be transmitted via the TCI state enable / disable MAC CE. The integrated TCI state enable / disable MAC CE can indicate the TCI state ID to be activated. The integrated TCI state enable / disable MAC CE includes the serving cell ID, DL BWP ID, and UL BWP ID. It can indicate the serving cell and BWP to which the MAC CE can be applied as a code point. The Pi field can indicate whether each i-th code point contains multiple TCI states or a single TCI state. If Pi = 1, the i-th TCI code point contains multiple TCI states, and if Pi = 0, the i-th TCI code point may contain only a DL / joint TCI state or a UL TCI state.

[0158] The D / U field can indicate whether the TCI state corresponding to the TCI state ID existing in the same octet is a DL / joint TCI state or a UL TCI state. Accordingly, in FIG. 11, the D / U field belonging to the same octet as the separate type DL TCI state and the joint type TCI state can be set to 1, and the D / U field belonging to the same octet as the separate type UL TCI state can be set to 0.

[0159] Unlike the integrated TCI state enable / disable MAC CE, the enhanced integrated TCI state enable / disable MAC CE for joint TCI states can jointly manage the TCI states of the uplink and downlink, so the UL BWP ID can be omitted. The Fi,j field indicates whether the j-th joint TCI state exists in the TCI state ID field associated with code point i of the DCI Transmission Configuration Indication field. Here, j can have a value of 1 or 2. Therefore, for the joint type as in step #2 of Fig. 11, up to two joint TCI states can correspond to each code point, and up to 16 joint TCI states can be enabled.

[0160] Unlike the integrated TCI state enable / disable MAC CE, the enhanced integrated TCI state enable / disable MAC CE for separate TCI states may include the Fi,j field and the Si,j field. The Fi,j field indicates whether the j-th DL TCI state exists in the TCI state ID field associated with code point i of the DCI Transmission Configuration Indication field. The Si,j field indicates whether the j-th UL TCI state exists in the TCI state ID field associated with code point i of the DCI Transmission Configuration Indication field. Therefore, in the case of the separate type of step #2 of Fig. 11, since each code point can correspond to up to two DL TCI states and up to two UL TCI states, up to 32 TCI states can be enabled.

[0161] The base station may transmit the DCI to the terminal via the PDCCH. The DCI may include a transmission configuration indication field, and decoding may be performed using the TCI state corresponding to the code point i of the transmission configuration indication field included in the DCI. As previously mentioned, the correspondence between code point i and the TCI state may be indicated by a TCI state activation command. That is, when the terminal receives a single TCI state for the CORESET, or receives a MAC CE activation command for one or two of the TCI states provided for the CORESET, the terminal may assume that the DM-RS antenna port associated with the PDCCH receptions within the CORESET is in a QCL relationship with one or more DL RSs established by the TCI states.

[0162] TCI states can be indicated by dividing them into two states. For example, if a terminal is provided with dl-OrJointTCI-StateList, TCI states can be indicated through a combination of two TCI states (first TCI state, second TCI state, first TCI state and second TCI state, none). For example, if the terminal indicates the first TCI state via apply-IndicatedTCISate, the terminal can assume that the reference signal provided by the first TCI state is in a QCL relationship with the DM-RS antenna port for PDCCH reception.

[0163] If dl-OrJointTCI-StateList is provided to the UE, and coresetPoolIndex is not provided to the UE, or if a coresetPoolIndex with a value of 0 is provided for the first coreset in the active DL BWP of the serving cell, the UE may assume that the DM-RS antenna ports for receiving PDCCH in the first and second coresets and the DM-RS antenna ports for receiving PDSCH scheduled by the DCI format provided by the PDCCH reception in the first and second coresets are in a QCL relationship with the reference signal provided by the TCI state specific to the first and second CORESETs, respectively. Additionally, the UE may transmit PUSCH scheduled by the DCI format provided by the PDCCH reception in the first and second CORESETs using spatial domain filters corresponding to the TCI state specific to the first and second CORESETs, respectively.

[0164] The TCI status can be used to transmit uplink signals. Uplink power control can be used to determine the power for PUSCH, PUCCH, SRS, or PRACH transmissions. The UE can be configured not to maintain more than four path loss estimates simultaneously for PUSCH / PUCCH / SRS transmissions per serving cell.

[0165] For PUSCH, PUCCH, SRS, or PRACH transmissions, a transmission opportunity may be defined by the slot index within the frame, the first symbol within the slot, and the number of consecutive symbols. If the terminal receives TCI states from dl-OrJointTCI-StateList, an RS index for estimating downlink path loss for PUSCH, PUCCH, or SRS transmissions may be provided for each of the one or two TCI states for a PUSCH, PUCCH, or SRS transmission opportunity.

[0166] Power control values ​​can be set explicitly or implicitly. For example, if followUnifiedTCI-StateSRS is set, power control values ​​are provided from p0AlphaSetforSRS associated with the TCI state. If followUnifiedTCI-StateSRS is not set, power control values ​​and RS indices for path loss estimation may be provided from the TCI state associated with the SRS resource having the lowest SRS-ResourceId. In this case, the total SRS power value can be determined based on the sum of individual SRS power control values ​​and additional components according to the SRS resource set.

[0167] The following describes the initial connection procedure between a terminal and a base station. When the initial connection procedure with the base station is performed due to reasons such as the terminal's power on / off operation or out of coverage, an identification procedure between the base station and the terminal may be required. First, the terminal may perform an initial cell search operation with the base station. The terminal may perform monitoring to receive a synchronization signal. The synchronization signal may be at least one of a PSS (primary synchronization signal) or a SSS (secondary synchronization signal). The terminal may obtain broadcast information within the cell by receiving a physical broadcast channel (PBCH) signal from the base station. Based on the physical broadcast channel, the terminal may obtain information about the cell using at least one of an MIB or a SIB. A block containing the PSS, SSS, and PBCH may be referred to as an SSB (synchronization signal block).

[0168] The terminal can perform a random access procedure. The terminal can transmit a preamble to the base station and receive a random access response (RAR) from the base station. The RAR message may include a temporary identifier. The terminal can transmit an MSG3 (or RRC connection request message) using the scheduling information within the RAR, and the base station can perform a contention resolution procedure by transmitting an MSG4 (or contention resolution message) to the terminal in response to the MSG3.

[0169] A base station can perform beam management based on RACH occasions used for transmitting preambles in random access procedures. For example, a base station can identify the beam in which a terminal received a synchronization signal based on the RACH occasion in which the preamble was transmitted. As previously mentioned, a synchronization signal may also be included as a reference signal to indicate QCL relationships, and QCL relationships may be established based on the SSB received through the initial access procedure.

[0170] Additionally, a channel measurement procedure may be performed for beam management. The terminal may receive a reference signal from the base station. Based on this, the terminal may report channel state information (CSI) to the base station. The channel state information may include at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), and signal-to-noise ratio (SNR). The base station may use the received channel state information to adjust beamforming for the terminal or to optimize radio resource allocation. For channel measurement, the base station may transmit configuration information for channel measurement to the terminal. The configuration information for channel measurement may include information related to the measurement target, the measurement period, etc.

[0171] The beams of the base station and terminal can manage beam settings through artificial intelligence (AI). For convenience, Beam Set B refers to the beam set for which measurements are performed as input to an AI / ML model, and Set A refers to the beam set determined based on the inference of the AI / ML model. Beam Set A and Beam Set B may contain beam information regarding the same frequency range.

[0172] Artificial intelligence can be used to infer spatial domain downlink beams for beam set A based on measurements of beam set B. As another example, artificial intelligence can be used to infer temporal downlink beams for beam set A based on past measurement results of beam set B. Here, beam set A and beam set B may be different sets, or beam set B may be a subset of beam set A.

[0173] In addition, the input to the artificial intelligence model can be formed in various combinations. For example, the input to the artificial intelligence may include at least one of an L1-RSRP measurement measured based on beam set B, other auxiliary information, a CIR (channel impulse response) based on beam set B, and a downlink Tx / Rx beam ID associated with the L1-RSRP measurement of beam set B.

[0174] The aforementioned artificial intelligence model can be designed to infer a beam including at least one of a downlink receiving beam and a downlink transmitting beam. Additionally, the output of the artificial intelligence model may include at least one of a transmitting beam, a receiving beam, the L1-RSRP of the transmitting beam, the L1-RSRP of the receiving beam, the angle of the transmitting beam, the angle of the receiving beam, and other information.

[0175] The beam management method using an artificial intelligence model is not limited to the method described above. The artificial intelligence model can be configured in various ways by configuring inputs and outputs with various combinations of settings, performance monitoring, data collection, auxiliary information, etc., regarding beam set A and beam set B.

[0176] Furthermore, learning and inference methods can be implemented in various ways. For example, artificial intelligence can be learned or trained using AI / ML (artificial intelligence / machine learning) models. Learning and training can be performed by a network or a UE. Additionally, learning and inference can be performed on different devices. For example, learning can be performed on a network and inference on a terminal. Partial learning can be performed in such a way that part of the learning is performed on a first device and another part on a second device. Similarly to learning, partial inference can be performed using multiple devices. Input data for inference can also be generated in various ways. For example, input data can be generated in the UE, and inference can be performed using that input data in a network. Additionally, input data generated in the UE can be processed internally within the UE to enable inference.

[0177]

[0178] The present disclosure describes techniques related to beam reporting in wireless communication systems, particularly UE (user equipment)-initiated / event-driven beam reporting (UE-BR). In particular, the present disclosure proposes various embodiments related to signaling and procedures for performing UE-BR.

[0179] UE-BR can be operated based on two or more sets of reference signals (RS) set in the UE for UE-BR and events associated with the RS sets. The RS sets can be set as a combination of at least one of the synchronization signal within the SSB, CSI-RS, or DM-RS, and can be configured and operated so that different IDs are assigned to different RS sets.

[0180] The UE checks whether the set event condition is satisfied based on the measurement value for the set RS set. If the set event condition is satisfied, the UE-BR operation can be triggered. The UE-BR method is divided into Mode A, which performs UE-BR by allocating a dynamic UL channel, and Mode B, which performs UE-BR using a pre-configured UL channel.

[0181] The operation method of UE-BR for cases where triggering occurs based on a specific RS set and its associated event among the multiple RS sets configured in UE-BR operation and the events associated with each of the multiple RS sets has not yet been determined.

[0182] Configuration information related to CSI resource configuration and / or CSI report configuration for UE-BR may be associated with a specific RS set, event, and PUCCH resource. In this disclosure, configuration information related to CSI resource configuration and / or CSI report configuration may be referred to as CSI resource / report configuration. In this case, when allocating a PUCCH exclusively for UE-BR, CSI resource / report configurations for multiple UE-BRs may be configured and operated with the same PUCCH resource. In this case, it is necessary to develop an operational method that ensures the CSI resource / report configuration corresponding to a specific triggered event and RS set is transmitted to the network via a second UL channel during the operation of the UE-BR.

[0183] In configuring CSI resource / report configurations, when two CSI resource / report configurations are set on a terminal, the following configurations can be configured. In the following configurations, the case where each combination corresponds to each CSI resource / report configuration is explained as an example. However, multiple combination configurations may be operated within a single CSI resource / report configuration.

[0184] Alternatively, the base station can set up and operate an RS set for channel quality measurement for a specific event by configuring the RS set through CSI resource / reporting configuration and performing configuration for the event through other higher layer signaling. That is, the UE can receive configuration information for multiple RS sets and multiple events from the base station, and can efficiently operate the UE-BR through the association of a specific RS set and a specific event.

[0185] [Configuration #1] RS Set A + Event A, RS Set A + Event B: A setting to associate the same RS set with different events.

[0186] [Configuration #2] RS Set A + Event A, RS Set B + Event A: A setting to associate different RS sets with the same event.

[0187] [Configuration #3] RS Set A + Event A, RS Set B + Event B: A configuration that associates different RS sets with different events.

[0188] At least in the case of Configuration #1, the first PUCCH resource configured for two CSI resource / report configurations may be commonly allocated, or two events may be configured for a single CSI-RS resource / report configuration and a common first PUCCH resource may be allocated regardless of the events. In this case, since both events are triggered within a specific time interval, there may be instances where the first PUCCH transmission is to be performed at the same location. Therefore, an operational method is required to perform UE-BR operations considering the situation described above.

[0189]

[0190] A base station may configure a triggering event or a triggering condition to perform a beam reporting operation when a terminal satisfies a specific triggering condition. In this disclosure, the beam reporting operation of the terminal performed in response to the satisfaction of the configured triggering event is referred to as UE-BR. For the UE-BR operation, the base station may configure the triggering event or the triggering condition for the UE-BR using one or more combinations of higher layer signaling, such as RRC, MAC-CE, or DCI. When the UE-BR operation is triggered, the terminal may perform the UE-BR operation as follows. In this disclosure, an event is understood as a triggering event, and an event condition may be understood as a triggering condition or a condition of the triggering event.

[0191] FIG. 12 illustrates a first example of a procedure for a UE-BR in a wireless communication system according to one embodiment of the present disclosure. Referring to FIG. 12, in step S1201, a terminal (1210) transmits a first PUCCH to a base station (1220). That is, in response to triggering for a UE-BR, the terminal (1210) may transmit control information for a beam report in the first PUCCH. Here, the control information may include a request for scheduling. In step S1203, the base station (1220) transmits a DCI to the terminal (1210). The DCI includes scheduling information for a beam report. In step S1205, the terminal (1210) transmits a second UL channel to the base station (1220). That is, the terminal (1210) transmits a beam report in the second UL channel. Here, the transmission of the first PUCCH may be referred to as signaling A1, and the transmission of the DCI may be referred to as signaling A2. Additionally, the second UL channel transmission may be referred to as signaling A3.

[0192] FIG. 13 illustrates a second example of a procedure for a UE-BR in a wireless communication system according to one embodiment of the present disclosure. Referring to FIG. 13, in step S1301, a terminal (1310) transmits a first PUCCH to a base station (1320). That is, in response to triggering for a UE-BR, the terminal (1310) may transmit control information for a beam report in the first PUCCH. Here, the control information may include a notification for the transmission of a beam report. In step S1303, the terminal (1310) transmits a second UL channel to the base station (1320). That is, the terminal (1210) transmits a beam report in the second UL channel. Here, the first PUCCH transmission may be referred to as signaling B1, and the second UL channel transmission may be referred to as signaling B2.

[0193] For convenience of explanation, the present disclosure refers to the method illustrated in FIG. 12 as mode A and the method illustrated in FIG. 13 as mode B. In mode A, the first PUCCH may be used to transmit a scheduling request (SR) requesting the allocation of UL resources for UE-BR execution. Accordingly, the base station may indicate specific UL resources for UE-BR via the DCI or allocate UL resources to be used for UE-BR. The terminal performs UE-BR using the corresponding second UL channel. At this time, the second UL channel may include a PUCCH or a PUSCH. In mode B, the first PUCCH is transmitted to notify the base station that the terminal intends to use a pre-configured second UL channel for UE-BR execution. Subsequently, the terminal performs UE-BR using the corresponding second UL channel. At this time, the second UL channel may include a PUCCH or a PUSCH.

[0194] As described above, the base station may set triggering conditions for UE-BR using one or more combinations of upper-layer signaling such as RRC, MAC-CE, or DCI for UE-BR operation. In this case, the triggering conditions for UE-BR may be set in the form of specific events. Additionally, these events may be associated with a specific reference signal and / or a specific PUCCH resource to be used for the first PUCCH in UE-BR operation. In the case of Mode B, the PUCCH resource configuration information may be associated with a specific pre-configured PUSCH resource to be used as the second UL channel. That is, the CSI resource / report configuration for UE-BR may be associated with at least one of a specific RS set, an event, a PUCCH resource, or (in the case of Mode B) a pre-configured PUSCH resource. Here, the event may include a triggering event configuration.

[0195]

[0196] FIG. 14 illustrates an example of a procedure for transmitting a beam report in a wireless communication system according to one embodiment of the present disclosure. FIG. 14 illustrates a method of operation of a terminal.

[0197] Referring to FIG. 14, in step S1401, the terminal receives configuration information for beam reporting. That is, the terminal receives configuration information including a plurality of configurations for UE-BR. The configuration information may include at least one of a CSI resource configuration for UE-BR, a CSI report configuration for UE-BR, an event configuration for UE-BR, or a PUCCH resource configuration for UE-BR. Here, two or more of the CSI resource configuration, CSI report configuration, event configuration, or PUCCH resource configuration may be interrelated. For example, each PUCCH resource may be associated with at least one RS set and at least one event configuration set by the CSI resource configuration and / or CSI report configuration. Accordingly, the configuration information may include information about each PUCCH resource to be allocated to the terminal for UE-BR, and the RS set and / or event configuration associated with each PUCCH resource. In other words, the configuration information may include information indicating the association between at least one PUCCH resource, at least one RS set, and at least one event configuration. According to one embodiment, the configuration information may further include information regarding the priority of each of a plurality of events, or the time offset for the transmission of the first PUCCH. According to one embodiment, the configuration information may be received through at least one of upper-layer signaling such as RRC, MAC-CE, or DCI.

[0198] In step S1403, the terminal detects an event for beam reporting. The terminal detects an event for UE-BR based on at least one of a plurality of configurations included in the received configuration information. The event for UE-BR is an event that triggers UE-BR and can be defined by an event configuration included in the configuration information. The terminal performs a measurement of at least one reference signal based on at least one RS set and determines that the result of the measurement satisfies a triggering condition based on an event configuration associated with at least one RS set. For example, the terminal may perform a measurement of CSI-RS and determine that the triggering condition for UE-BR is satisfied based on the fact that the number of times the measured result value satisfies a specified threshold is greater than or equal to a specified number of times. The satisfaction of the triggering condition for UE-BR can be understood as the detection of an event for beam reporting.

[0199] In step S1405, the terminal transmits control information for beam reporting. In response to the detection of an event for beam reporting, the terminal transmits control information related to beam reporting on the first UL channel. The first UL channel includes PUCCH. Depending on various embodiments, the control information may include a request for resource allocation for the second UL channel or a notification regarding the use of the second UL channel. The control information may further include instruction information for distinguishing between the request for resource allocation for the second UL channel and the notification regarding the use of the second UL channel. For example, the instruction information may indicate whether the operation mode for the terminal’s UE-BR is Mode A, which requests resource allocation for the second UL channel, or Mode B, which notifies the use of the second UL channel.

[0200] In step S1407, the terminal transmits a beam report. The terminal may transmit the beam report through a second UL channel corresponding to control information. The second UL channel may include a PUCCH or a PUSCH. The second UL channel may include a channel assigned in response to the control information or a channel designated by the control information among pre-configured channels. For example, if the terminal operates according to Mode A, the second UL channel may include a channel designated by the DCI received from the base station in response to the control information for the beam report. As another example, if the terminal operates according to Mode B, the second UL channel may include a channel among pre-configured channels that the base station has been notified to use as the second UL channel using the control information for the beam report. The beam report may include information related to at least one configuration used for event detection by the UE-BR. The information related to at least one configuration may include information indicating a detected event, or at least one of a plurality of configurations indicating a configuration that caused triggering by the UE-BR. Here, information indicating the configuration that caused the triggering of the UE-BR may include at least one of the following: information indicating the RS set and / or event configuration that caused the triggering of the UE-BR among a plurality of RS sets and / or event configurations set in the terminal, or information related to a CSI resource / reporting configuration corresponding to the RS set and / or event configuration that caused the triggering of the UE-BR. According to one embodiment, the terminal may indicate the RS set and / or event configuration that caused the triggering of the UE-BR using the indication information. The indication information may consist of an indication bit or a sequence. According to one embodiment, information related to at least one configuration may include information indicating a beam related to the event.Information related to at least one configuration may include information indicating whether each of the plurality of beams included in the beam report has satisfied the conditions of the event a specified number of times.

[0201] In the embodiment described with reference to FIG. 14, the terminal transmits information related to at least one configuration used for event detection for UE-BR to the base station via beam reporting. However, the present disclosure is not limited thereto. For example, according to another embodiment, the terminal may transmit information related to at least one configuration used for event detection for UE-BR to the base station via control information. In other words, the terminal may transmit control information containing information related to at least one configuration used for event detection for UE-BR to the base station via the first UL channel.

[0202]

[0203] FIG. 15 illustrates an example of a procedure for receiving a beam report in a wireless communication system according to one embodiment of the present disclosure. FIG. 15 illustrates a method of operation of a base station.

[0204] Referring to FIG. 15, in step S1501, the base station transmits configuration information for beam reporting. That is, the base station transmits configuration information including a plurality of configurations for UE-BR to the terminal. The configuration information may include at least one of a CSI resource configuration for UE-BR, a CSI report configuration for UE-BR, an event configuration for UE-BR, or a PUCCH resource configuration for UE-BR. Here, two or more of the CSI resource configuration, CSI report configuration, event configuration, or PUCCH resource configuration may be interrelated. For example, each PUCCH resource may be associated with at least one RS set and at least one event configuration set by the CSI resource configuration and / or CSI report configuration. Accordingly, the configuration information including a plurality of configurations for UE-BR may include information about each PUCCH resource to be allocated to the terminal for UE-BR, and the RS set and / or event configuration associated with each PUCCH resource. In other words, the configuration information may include information indicating the association between at least one PUCCH resource, at least one RS set, and at least one event configuration. According to one embodiment, the configuration information may further include information regarding the priority of each of the plurality of events, or the time offset for the first PUCCH transmission. According to one embodiment, the configuration information may be received through at least one of upper-layer signaling such as RRC, MAC-CE, or DCI.

[0205] In step S1503, the base station receives control information regarding beam reporting. In response to the detection of an event for beam reporting by the terminal, control information related to beam reporting may be received from the terminal via the first UL channel. The first UL channel may include PUCCH. According to various embodiments, the control information may include a request for resource allocation for the second UL channel or a notification regarding the use of the second UL channel. The control information may further include instruction information to distinguish between the request for resource allocation for the second UL channel and the notification regarding the use of the second UL channel. For example, the instruction information may indicate whether the operation mode for the terminal's UE-BR is Mode A, which requests resource allocation for the second UL channel, or Mode B, which notifies the use of the second UL channel. If it is determined that the control information includes a request for resource allocation for the second UL channel, the base station may transmit a DCI for allocating the second UL channel to the terminal.

[0206] In step S1505, the base station receives a beam report. The base station may receive the beam report through a second UL channel corresponding to control information. The second UL channel may include a PUCCH or a PUSCH. The second UL channel may include a channel assigned in response to the control information or a channel among pre-configured channels indicated by the control information. For example, the second UL channel may include a channel indicated by the DCI transmitted to the terminal in response to the control information for the beam report. As another example, the second UL channel may include a channel among the channels pre-configured by the base station for which the base station is notified of use as the second UL channel through the control information for the beam report. The beam report may include information related to at least one configuration used for event detection by the UE-BR. The information related to at least one configuration may include information indicating a detected event, or at least one of a plurality of configurations indicating a configuration that caused triggering of the UE-BR. Here, information indicating the configuration that caused the triggering of the UE-BR may include at least one of the following: information indicating the RS set and / or event configuration that caused the triggering of the UE-BR among a plurality of RS sets and / or event configurations set in the terminal, or information indicating information related to the CSI resource / reporting configuration corresponding to the RS set and / or event configuration that caused the triggering of the UE-BR. According to one embodiment, the terminal may indicate the RS set and / or event configuration that caused the triggering of the UE-BR using the indication information. The indication information may consist of indication bits or sequences. The base station may identify which RS set and / or event configuration among the plurality of RS sets and / or event configurations set in the terminal the beam report corresponds to through the information included in the beam report. According to one embodiment, information related to at least one configuration may include information indicating the beam related to the event.Information related to at least one configuration may include information indicating whether each of the plurality of beams included in the beam report has satisfied the conditions of the event a specified number of times.

[0207] In the embodiment described with reference to FIG. 15, the base station receives information related to at least one configuration used for event detection for UE-BR through beam reporting. However, the present disclosure is not limited thereto. For example, the base station may receive information related to at least one configuration used for event detection for UE-BR through control information. In other words, the base station may receive control information including information related to at least one configuration used for event detection for UE-BR through the first UL channel.

[0208]

[0209] [Example #1]

[0210] When a dedicated PUCCH is allocated for UE-BR operation, CSI resource / reporting configurations for multiple UE-BRs can be set and operated on the same PUCCH resource. In this case, information regarding CSI resource / reporting configurations corresponding to specific triggered events and RS sets can be transmitted to the network via the second UL channel during UE-BR operation.

[0211] In a form where a report configuration ID, CSI resource configuration, event ID, PUCCH resource configuration, etc., are interrelated, there may exist multiple RS sets and / or event configurations configured to be associated with the same PUCCH resource. In this case, the base station may generate a list containing information regarding RS sets and / or event configurations for a specific PUCCH resource via RRC or MAC-CE, and may set, configure, and / or share the generated list with the terminal. For convenience of explanation, a combination of configuration information in a form where the report configuration ID, CSI resource configuration, event ID, and / or PUCCH resource configuration, etc., are interrelated is referred to as an RS set and / or event configuration.

[0212] [Table 3] is an example of the relationship between configuration information and the information configuration for indicating it.

[0213] PUCCH Resource ID Associated RS Set and Event Configuration Information Code Point PUCCH Resource #1 RS Set and / or Event Configuration #1 Bit '0' RS Set and / or Event Configuration #2 Bit '1' PUCCH Resource #2 RS Set and / or Event Configuration #3 Bit '0' RS Set and / or Event Configuration #4 Bit '1'

[0214] In the example of [Table 3], the UE is allocated two PUCCH resources from the base station. Additionally, each PUCCH resource is associated with two RS sets and / or event configuration information. [Table 3] shows four combinations for specific RS sets and / or event configurations. Some of the RS sets or event configurations in each combination may be identical to each other.

[0215] According to [Table 3], UE-BR can be triggered based on at least one of the four RS sets and / or event configurations set in the UE. For example, UE-BR can be triggered through RS set and / or event configuration #2.

[0216] In Mode A, the UE may transmit an SR to request the allocation of a second UL resource through a PUCCH channel corresponding to PUCCH resource #1 associated with RS set and / or event configuration #2. Subsequently, the base station may allocate the second UL channel to the UE via DCI. When PUSCH is allocated to the UE as the second UL channel, the UE may report information regarding beams measured through said PUSCH channel.

[0217] According to one embodiment, triggering may occur for different PUCCH resources. For example, while a UE-BR is triggered via RS set and / or event configuration #2, a UE-BR may be triggered via RS set and / or event configuration #3. In this case, the UE may perform two UE-BR operations for different PUCCH resources. Alternatively, based on the priority configured by the upper layer signaling, the UE may perform only one of the two UE-BR operations corresponding to the two triggerings. In other words, the UE may perform only the UE-BR operation corresponding to the event with the highest priority based on the priority of the events that caused the UE-BR triggering. Alternatively, the UE may perform only the UE-BR operation for the event with an early PUCCH transmission time, regardless of the event priority. In other words, the UE may perform only the UE-BR operation corresponding to the earlier PUCCH transmission time among the triggered UE-BRs. However, the present disclosure is not limited to the examples described above. For example, the UE may be configured and operated to perform only one UE-BR operation based on other configured or predefined criteria.

[0218] Alternatively, the UE may transmit a PUCCH to the base station to perform two UE-BR operations. In this case, the base station may drop one UE-BR and allocate a second UL channel for the remaining UE-BR operation. At this time, an instruction indicating that one UE-BR has been dropped may be explicitly or implicitly transmitted to the UE via the DCI or PDCCH transmitted to the UE for the allocation of the second UL channel. This prevents the UE from retransmitting the dropped PUCCH. Here, the UE-BR drop at the base station may be understood as not allocating a second UL channel for the corresponding UE-BR operation, or processing so that the corresponding UE-BR operation is not performed.

[0219] In the case of Mode B, the UE may transmit a PUCCH indicating the use of a pre-configured second UL resource through a PUCCH channel corresponding to PUCCH resource #1 associated with RS set and / or event configuration #2. Subsequently, information about the measured beam may be reported through the pre-configured second UL channel.

[0220] In the operation of the above modes A and B, when reporting information about the beam, the UE may transmit information related to the RS set and / or event configuration that triggered the UE-BR. If the second UL channel is PUSCH, a field for indicating the relevant information is defined in the payload or MAC-CE of PUSCH, and information related to the RS set and / or event configuration that triggered the UE-BR may be transmitted through the relevant field.

[0221] In the example of [Table 3], assuming that the time-frequency resources of the PUCCH channel corresponding to PUCCH resource #1 and PUCCH resource #2 are distinguished, since two RS sets and / or event configurations are associated with a specific PUCCH resource, the UE can use 1 bit of indication information to indicate which of the two RS sets and / or event configurations the UE-BR was operated on. If the UE-BR is triggered through RS set and / or event configuration #2, bit '1' may be used as the indication bit. For the indication bit, a transmission location or field of a specific bit may be set via the payload of the PUSCH or MAC-CE. The UE may transmit information related to the RS set and / or event configuration that caused the triggering of the UE-BR to the base station by transmitting the information to the base station through the set transmission location or field. However, this is merely an example and the present disclosure is not limited thereto. For example, in addition to using 1-bit instruction information, by performing CRC masking based on a specific ID, etc., the UE can indicate the RS set and / or event configuration that caused the triggering of the UE-BR.

[0222] That is, in the case of UE-BR mode A, the UE can transmit information related to the RS set and / or event configuration that caused the triggering of the UE-BR to the base station via signaling A3, and in the case of UE-BR mode B, it can transmit information related to the RS set and / or event configuration that caused the triggering of the UE-BR to the base station via signaling B2.

[0223] Alternatively, information indicating a beam that satisfies the triggering condition of the UE-BR may be transmitted using 1-bit indication information. In other words, for each of the multiple beams included in the beam report, the UE may use 1-bit indication information to indicate whether the reference signal measurement result for the corresponding beam has satisfied the event condition for triggering the UE-BR a specified number of times.

[0224] [Table 3] is a case where time-frequency resources of PUCCH channels corresponding to PUCCH resource #1 and PUCCH resource #2 are distinguished, and when a UE transmits a first PUCCH through a specific PUCCH channel, the UE may additionally indicate which of the multiple RS sets and / or event configurations associated with the PUCCH resource the first PUCCH is associated with. If some of the PUCCH channels corresponding to PUCCH resource #1 and PUCCH resource #2 are allocated in common or all are identical, 2 bits of indication information may be required to distinguish the four RS sets and / or event configurations associated with the two PUCCH resources exemplified in [Table 3]. In other words, if at least a portion of the time-frequency resources of the PUCCH channel corresponding to PUCCH resource #1 is the same as at least a portion of the time-frequency resources of the PUCCH channel corresponding to PUCCH resource #2, 2 bits of indication information may be used to distinguish the four RS sets and / or event configurations associated with PUCCH resource #1 and PUCCH resource #2.

[0225] According to one embodiment, each PUCCH resource is divided into time-frequency resources, and there may be one RS set and / or event configuration associated with each PUCCH resource. In this case, the UE may implicitly transmit information about the RS set and / or event configuration that caused the triggering of the UE-BR to the base station through the selected first PUCCH resource.

[0226]

[0227] FIG. 16 illustrates an example of a procedure for transmitting a beam report based on a pre-configured reference in a wireless communication system according to one embodiment of the present disclosure. FIG. 16 illustrates a method of operation of a terminal.

[0228] Referring to FIG. 16, in step S1601, the terminal detects an event for the first UE-BR. The terminal detects that the condition for the first event for beam reporting is satisfied based on at least one of a plurality of configurations. In response to the condition for the first event for beam reporting being satisfied, the first UE-BR operation may be triggered.

[0229] In step S1603, the terminal detects an event for the second UE-BR. The terminal detects that the condition for the second event for beam reporting is satisfied based on at least one of a plurality of configurations. In response to the condition for the second event for beam reporting being satisfied, the second UE-BR operation may be triggered. Here, the second event may be the same event having the same condition as the first event, or a different event having different conditions from the first event.

[0230] In step S1605, the terminal checks whether the conditions for performing the second UE-BR operation are satisfied. Specifically, based on the transmission time of the first UL channel for transmitting first control information corresponding to an event for the first UE-BR, and the transmission time of another first UL channel for transmitting second control information corresponding to an event for the second UE-BR, the terminal can determine whether the conditions for performing the second UE-BR operation are satisfied. For example, the terminal can determine whether the conditions for performing the second UE-BR operation are satisfied based on whether the transmission time of the first UL channel for transmitting first control information corresponding to a first event for the first UE-BR is within a specific time interval prior to the transmission time of another first UL channel for transmitting second control information corresponding to a second event for the second UE-BR. As another example, the terminal may determine whether a condition for performing a second UE-BR operation is satisfied based on whether the transmission time of a second UL channel for transmitting a beam report corresponding to a first event for a first UE-BR is within a specific time interval prior to the transmission time of another first UL channel for transmitting second control information corresponding to a second event for a second UE-BR. In this case, the first UE-BR and the second UE-BR may be triggered by the same beam.

[0231] If the conditions for performing the second UE-BR operation are not satisfied, in step S1607, the terminal performs only the first UE-BR operation. Based on the fact that the conditions for performing the second UE-BR operation are not satisfied, the terminal performs the first UE-BR operation and drops the second UE-BR operation. For example, the terminal may drop the transmission of another first UL channel corresponding to the second UE-BR and transmit the first UL channel corresponding to the first UE-BR, based on the fact that the transmission time of the first UL channel for transmitting first control information corresponding to an event for the first UE-BR is within a specific time interval prior to the transmission time of another first UL channel for transmitting second control information corresponding to an event for the second UE-BR. As another example, the terminal may drop the transmission of another first UL channel corresponding to the second UE-BR and transmit the second UL channel corresponding to the first UE-BR, based on the fact that the transmission time of the second UL channel for transmitting a beam report corresponding to an event for the first UE-BR is within a specific time interval prior to the transmission time of another first UL channel for transmitting second control information corresponding to an event for the second UE-BR.

[0232] If the conditions for performing the second UE-BR operation are satisfied, in step S1609, the terminal performs the first UE-BR operation and the second UE-BR operation. For example, the terminal may transmit the first UL channel corresponding to the first UE-BR and perform the transmission of the other first UL channel corresponding to the second UE-BR, based on the fact that the transmission time of the first UL channel for transmitting first control information corresponding to an event for the first UE-BR is not within a specific time interval prior to the transmission time of the other first UL channel for transmitting second control information corresponding to an event for the second UE-BR. As another example, the terminal may transmit a second UL channel corresponding to the first UE-BR and perform transmission of another first UL channel corresponding to the second UE-BR, based on the fact that the transmission time of the second UL channel for transmitting a beam report corresponding to an event for the first UE-BR is not within a specific time interval prior to the transmission time of another first UL channel for transmitting second control information corresponding to an event for the second UE-BR.

[0233] In the embodiment described with reference to FIG. 16, the conditions for performing the second UE-BR operation are based on the transmission timing of the first UL channel and / or the second UL channel corresponding to each event. However, the present disclosure is not limited thereto. For example, the conditions for performing the second UE-BR operation may be defined based on the priority of each event.

[0234]

[0235] [Example #2]

[0236] When a dedicated PUCCH is allocated for UE-BR operation, CSI resource / report configurations for multiple UE-BRs may be configured to use the same PUCCH resource. In this case, information regarding the CSI resource / report configuration corresponding to a specific triggered event and RS set may be transmitted to the network via the first PUCCH for the UE-BR. That is, the UE may transmit information regarding the RS set and / or event configuration that caused the triggering of the UE-BR to the base station via signaling A1 of UE-BR mode A or signaling B1 of UE-BR mode B.

[0237] In a form where the Report Configuration ID, CSI Resource Configuration, Event ID, PUCCH Resource Configuration, etc. are interrelated, multiple RS sets and / or event configurations configured to be associated with the same PUCCH resource may exist. In this case, the base station may use RRC or MAC-CE to generate a list containing information regarding the RS sets and / or event configurations for a specific PUCCH resource, and may set, configure, and / or share the generated list with the terminal. For convenience of explanation, a combination of configuration information in a form where the Report Configuration ID, CSI Resource Configuration, Event ID, PUCCH Resource Configuration, etc. are interrelated is referred to as an RS set and / or event configuration.

[0238] [Table 4] is an example of the relationship between configuration information and the information configuration for indicating it.

[0239] PUCCH Resource ID Associated RS Set and Event Configuration Information Sequence or Indication Bits PUCCH Resource #1 RS Set and / or Event Configuration #1 Sequence #1 or '0' RS Set and / or Event Configuration #2 Sequence #2 or '1' PUCCH Resource #2 RS Set and / or Event Configuration #3 Sequence #1 or '0' RS Set and / or Event Configuration #4 Sequence #2 or '1'

[0240] In the example of [Table 4], two PUCCH resources are allocated to the UE from the base station. Additionally, each PUCCH resource is associated with two RS sets and / or event configurations. [Table 4] illustrates four combinations for specific RS sets and / or event configurations. Some of the RS sets or event configurations in each combination may be identical to one another.

[0241] According to [Table 4], UE-BR can be triggered based on at least one RS set and / or event configuration among the four RS sets and / or event configurations set in the UE.

[0242] When requesting the allocation of a second UL channel via the first PUCCH based on Mode A, or when notifying the use of a pre-configured UL resource as a second UL channel via the first PUCCH based on Mode B, the UE may also transmit information regarding the RS set and / or event configuration that caused the triggering of the UE-BR. In this case, the first PUCCH may transmit the information in the form of a sequence or in the form of bits.

[0243] For example, if the UE-BR is triggered by an RS set and / or event configuration #2, the UE may transmit a first PUCCH through a PUCCH channel corresponding to PUCCH resource #1 associated with the RS set and / or event configuration #2. At this time, the UE may transmit information about the RS set and / or event configuration that caused the current triggering of the UE-BR to the base station by transmitting a sequence or bit '1' corresponding to the RS set and / or event configuration #2 using the first PUCCH.

[0244] [Table 4] is a case where time-frequency resources of a PUCCH channel corresponding to PUCCH resource #1 and PUCCH resource #2 are distinguished, and when a UE transmits a first PUCCH through a specific PUCCH channel, it may additionally indicate which RS set and / or event configuration among a plurality of RS sets and / or event configurations associated with the PUCCH resource the first PUCCH is for.

[0245] If a portion of the PUCCH channels corresponding to PUCCH Resource #1 and PUCCH Resource #2 is allocated jointly or if the entirety is identical, 2 bits of instruction information may be required to distinguish the four RS sets and / or event configurations associated with the two PUCCH resources exemplified in [Table 4]. In other words, if at least a portion of the time-frequency resources of the PUCCH channel corresponding to PUCCH Resource #1 is identical to at least a portion of the time-frequency resources of the PUCCH channel corresponding to PUCCH Resource #2, 2 bits of instruction information may be used to distinguish the four RS sets and / or event configurations associated with PUCCH Resource #1 and PUCCH Resource #2. Alternatively, if a sequence corresponding to the information is transmitted through the first PUCCH, at least four distinguishable sequences may be set and defined. That is, the terminal may indicate the RS set and / or event configuration that caused the corresponding triggering using the 2 bits of instruction information or the four distinguishable sequences.

[0246] According to one embodiment, each PUCCH resource is classified into time-frequency resources, and there may be only one RS set and / or event configuration associated with each PUCCH resource. In this case, the UE may implicitly transmit to the base station information regarding the RS set and / or event configuration that caused the triggering of the UE-BR through the PUCCH resource selected and used as the first PUCCH.

[0247] In the operation of mode A, signaling A2 after the first PUCCH transmission, i.e., the DCI for allocating the second UL channel, may additionally include information indicating which RS set and / or event configuration the first PUCCH transmitted by the UE is the second UL channel.

[0248] Additionally, when the terminal reports beam-related information via the second UL channel based on the operation of modes A and B, information regarding the RS set and / or event configuration that caused the triggering of the UE-BR may be transmitted together. That is, the UE may transmit the second UL channel via signaling A3 or signaling B3, which includes information indicating which RS set and / or event configuration the corresponding beam report corresponds to the UE-BR, based on configuration information such as [Table 4]. If the second UL channel is PUSCH, the method of transmitting the information may follow the method of Example #1 or a modified form of the method of Example #1.

[0249]

[0250] [Example #3]

[0251] For UE-BR operation, multiple events, i.e., triggering events, to trigger a beam report by a base station can be configured in the UE. Additionally, a common PUCCH resource can be set up and operated for two or more of the multiple triggering events configured in the UE.

[0252] FIG. 17 illustrates examples of PUCCH resources associated with a plurality of triggering events in a wireless communication system according to one embodiment of the present disclosure. FIG. 17 illustrates a case where three triggering events are configured for a UE, and a common PUCCH resource is allocated for the three triggering events. For example, UE-BR triggering event #1, UE-BR triggering event #2, and UE-BR triggering event #3 may be configured for a UE, and PUCCH #1, PUCCH #2, and PUCCH #3 may be commonly allocated for the corresponding events. Hereinafter, a triggering event may be referred to as an event.

[0253] Referring to FIG. 17, three events (1701, 1702, 1703) can all be triggered within a specific time. In this case, the available PUCCH resource based on the triggering time of each event may all be the same as PUCCH #1. That is, a conflict of the first PUCCH resource for multiple events occurs. To solve this problem, operation such as the following Examples #3-1 and #3-2 is possible.

[0254] Example #3-1

[0255] Priorities can be set among events using the same PUCCH resource. That is, the UE may first transmit a first PUCCH for a UE-BR operation based on the event with the highest priority among multiple triggered events. Subsequently, the UE may transmit a first PUCCH for a UE-BR operation based on an event with the next highest priority through the next allocated PUCCH resource. Alternatively, the UE may drop the first PUCCH for a UE-BR operation based on an event with the next highest priority. Here, dropping the first PUCCH for a UE-BR operation may be understood as suspending or terminating the corresponding UE-BR operation by not transmitting the first PUCCH for the UE-BR operation.

[0256] For example, let us assume that the priorities for the three events (1701, 1702, 1703) exemplified in FIG. 17 are Event #1, Event #2, and Event #3. As previously mentioned, the PUCCH resources for the three events (1701, 1702, 1703) are set to be common, and since the available PUCCH resources after the three events (1701, 1702, 1703) are triggered are identical, a conflict of PUCCH resources occurs. That is, the PUCCH resources commonly set for the three events are PUCCH #1 (1711), PUCCH #2 (1712), and PUCCH #3 (1713) in chronological order, and the first available PUCCH channel based on the time when each of the three events (1701, 1702, 1703) is triggered is PUCCH #1 (1711).

[0257] In this case, PUCCH resources may be used based on the priority of the events. That is, Event #1 (1701), Event #2 (1702), and Event #3 (1703) may use PUCCH resources in sequence to transmit the first PUCCH. For example, the UE may transmit the first PUCCH using PUCCH #1 (1711) for Event #1 (1701), transmit the first PUCCH using PUCCH #2 (1712) for Event #2 (1702), and transmit the first PUCCH using PUCCH #3 (1713) for Event #3 (1703).

[0258] Alternatively, the UE may send a first PUCCH using PUCCH #1 (1711) for the highest priority event #1 (1701) and drop the UE-BR triggering caused by the remaining events (1702, 1703). Here, dropping the UE-BR triggering may be understood as stopping or terminating the UE-BR operation by not sending a first PUCCH for the UE-BR.

[0259] Alternatively, the UE may operate based on the priority of the events, but may transmit the first PUCCH only if it is possible to transmit the first PUCCH within a specific time offset after the triggering time. Accordingly, if there is no PUCCH resource available to transmit the first PUCCH within a specific time offset after the triggering time, the UE may drop the UE-BR triggering caused by the event. For example, if PUCCH #1 (1711) is allocated within a pre-configured time offset relative to the triggering time of event #1 (1701), the UE transmits the first PUCCH based on event #1 (1701) through PUCCH #1 (1711). Additionally, if PUCCH #2 (1712) is allocated within a pre-configured time offset from the triggering time of Event #2 (1702), a first PUCCH based on Event #2 (1702) is transmitted via said PUCCH #2 (1712). Additionally, if PUCCH #3 (1713) is allocated within a pre-configured time offset from the triggering time of Event #3 (1703), a first PUCCH based on Event #3 (1703) is transmitted via said PUCCH #3 (1713). In the above operations, if the PUCCH resource for transmitting the first PUCCH is not within a pre-configured time offset relative to each event triggering time, the UE may drop the event triggering. That is, the UE may stop the UE-BR without transmitting the first PUCCH for the event triggering.

[0260] In the operation described above, if the available PUCCH resource for a specific event with priority is outside a pre-configured time offset relative to the triggering time of the event, the PUCCH resource may be used as a PUCCH resource for the event with the next highest priority. For example, if PUCCH #1 (1711) is not allocated within a pre-configured time offset relative to the triggering time of event #1 (1701), the event #1 (1701) may be dropped. In this case, PUCCH #1 (1711) may be used for the event #2 (1702) with the next highest priority. At this time, if PUCCH #1 (1711) is allocated within a pre-configured time offset relative to the triggering time of event #2 (1702), a first PUCCH based on event #2 (1702) may be transmitted using PUCCH #1 (1711).

[0261] In the operations described above, the priority and specific time offset values ​​for the event can be set or provided to the UE by the base station using one or more combinations of upper-layer signaling such as RRC, MAC-CE, and DCI for UE-BR operation.

[0262]

[0263] Example #3-2

[0264] As illustrated in FIG. 17, let us assume that three events (1701, 1702, 1703) are configured in the UE, and that the chronological order of occurrence of the three events is Event #3 (1703), Event #1 (1701), and Event #2 (1702). Additionally, since the PUCCH resources for the three events (1701, 1702, 1703) are configured in common and the available PUCCH resources after the three events (1701, 1702, 1703) are triggered are all the same, a conflict of PUCCH resources occurs. That is, the PUCCH resources commonly set for the three events are PUCCH #1 (1701), PUCCH #2 (1702), and PUCCH #3 (1703) in chronological order, and the first PUCCH channel available after the three events (1701, 1702, 1703) are triggered is PUCCH #1 (1711).

[0265] In this case, PUCCH resources can be configured and operated to be used sequentially based on the time at which the UE-BR triggered. That is, a first PUCCH can be transmitted using PUCCH #1 (1711) for the first triggered event #3 (1703), a first PUCCH can be transmitted using PUCCH #2 (1712) for the next triggered event #1 (1701), and a first PUCCH can be transmitted using PUCCH #3 (1713) for the last triggered event #2 (1702).

[0266] Alternatively, the UE may send a first PUCCH using PUCCH #1 (1711) for event #3 (1703) that first caused the UE-BR triggering, and drop the UE-BR triggering caused by the remaining events (1701, 1702).

[0267] Alternatively, the UE operates based on the time of the event's triggering, but transmits the first PUCCH only if it can transmit the first PUCCH within a specific time offset after the triggering time. Conversely, if there is no PUCCH resource available to transmit the first PUCCH within a specific time offset after the event's triggering time, the UE may drop the UE-BR triggering caused by the event. For example, if PUCCH #1 (1711) is allocated within a pre-configured time offset based on the triggering time of event #3 (1703), the UE transmits the first PUCCH based on event #3 (1703) through PUCCH #1 (1711). Additionally, if PUCCH #2 (1712) is allocated within a pre-configured time offset after the triggering time of Event #1 (1701), a first PUCCH based on Event #1 (1701) is transmitted via PUCCH #2 (1712). If PUCCH #3 (1713) is allocated within a pre-configured time offset after the triggering time of Event #2 (1702), a first PUCCH based on Event #2 (1702) is transmitted via PUCCH #3 (1713). In the above operations, the UE may drop the event triggering if the PUCCH resource for transmitting the first PUCCH is not within a pre-configured time offset based on each event triggering time. That is, the UE may stop the UE-BR without transmitting the first PUCCH for the event triggering.

[0268] In the operation described above, if the PUCCH resource to be used by a specific event with a time priority is outside a pre-configured time offset relative to the triggering time, said PUCCH resource may be used as a PUCCH resource for the next event with a time priority. For example, if PUCCH #1 (1711) is not allocated within a pre-configured time offset relative to the triggering time of event #3 (1703), said event #3 (1703) may be dropped. In this case, PUCCH #1 (1711) may be used for the next event with a priority, event #1 (1701). At this time, if PUCCH #1 (1711) is allocated within a pre-configured time offset relative to the triggering time of event #1 (1701), a first PUCCH based on event #1 (1701) may be transmitted using PUCCH #1 (1711).

[0269] In the embodiments described above, the priority and specific time offset values ​​for the event can be set or provided to the UE by the base station using one or more combinations of upper layer signaling such as RRC, MAC-CE, and DCI for UE-BR operation.

[0270] In the aforementioned embodiments #3-1 and #3-2, the plurality of events used for illustrative purposes may be configured and operated as combinations of events and RS sets for UE-BR. For example, in the foregoing description, the plurality of events may refer to combinations configured with specific events and specific RS sets. In this case, the plurality of combined configurations may be operated only as combinations where the events and RS sets are configured differently. Alternatively, there may be combinations where the RS set settings are different for the same event. In this case, UE-BR triggering by the same event may occur based on different RS sets. Alternatively, it may include cases where the RS set settings are the same for different events.

[0271] In the present disclosure, operation is possible through variations or combinations of each embodiment. For example, if UE-BR triggering by the same event occurs based on different RS set settings, each triggering for the different RS set settings has the same priority based on the priority of the corresponding event. In this case, the UE can be operated such that each triggering for the different RS set settings has priority based on the time of triggering occurrence. That is, the UE can be configured and operated to operate based on priority according to either the priority of the event or the priority based on the time of triggering occurrence. In other words, when the present disclosure is operated by a combination of Embodiments #3-1 and #3-2, it can be operated such that priority is given to either Embodiment #3-1 or #3-2.

[0272]

[0273] FIG. 18 illustrates an example of a procedure for transmitting a first PUCCH based on priority in a wireless communication system according to one embodiment of the present disclosure. FIG. 18 illustrates a method of operation of a terminal.

[0274] Referring to FIG. 18, in step S1801, the terminal detects multiple events. The terminal may detect multiple events in response to the conditions for multiple events for beam reporting being satisfied. For example, the terminal may detect that UE-BRs are triggered by multiple events in response to the conditions for multiple events for beam reporting being satisfied.

[0275] In step S1803, the terminal checks whether PUCCH resources conflict. The terminal can determine whether the PUCCH resources of multiple events conflict by checking the PUCCH resources associated with each of the multiple events. If the PUCCH resources associated with each of the multiple events are identical, the terminal can determine that the PUCCH resources conflict. On the other hand, if the PUCCH resources associated with each of the multiple events are all different, the terminal can determine that the PUCCH resources do not conflict.

[0276] In the event that PUCCH resources conflict, at step S1805, a first PUCCH for a selected event is transmitted. Here, the event may be selected based on a given rule, and the rule may be predefined or configured by prior signaling. The rule may be defined or configured based on at least one of the priority of the events, the time of occurrence of the events, or the priority of the UE-BR mode corresponding to the events. According to one embodiment, the terminal transmits a first PUCCH based on the priority of the events. The terminal may transmit a first PUCCH through a PUCCH resource commonly allocated to a plurality of events based on the priority of a plurality of events. For example, the terminal may transmit a first PUCCH for the event with the highest priority through a first PUCCH resource within the commonly allocated PUCCH resource. Additionally, the terminal may transmit a second PUCCH for the event with the next highest priority through a second PUCCH resource within the commonly allocated PUCCH resource. Alternatively, the terminal may drop the second PUCCH for the next priority event without transmitting it.

[0277] According to one embodiment, the terminal transmits a first PUCCH based on the timing of the occurrence of events. The terminal may transmit the first PUCCH through a PUCCH resource commonly allocated to a plurality of events based on the timing of the occurrence of a plurality of events. For example, the terminal may transmit the first PUCCH for the event that occurs or is detected first through the first PUCCH resource within the commonly allocated PUCCH resource. Additionally, the terminal may transmit a second PUCCH for the event that occurs or is detected next in sequence through a second PUCCH resource within the commonly allocated PUCCH resource. Alternatively, the terminal may drop the second PUCCH for the event that occurs or is detected next in sequence without transmitting it.

[0278] According to one embodiment, the terminal transmits a first PUCCH based on the priority of the UE-BR mode corresponding to the events. The terminal may transmit the first PUCCH through a PUCCH resource commonly allocated to a plurality of events based on the priority of the UE-BR mode corresponding to a plurality of events. For example, the terminal may transmit a first PUCCH for an event of the UE-BR mode with a higher priority through a first PUCCH resource within the commonly allocated PUCCH resource. Additionally, the terminal may transmit a second PUCCH for an event of the UE-BR mode with the next highest priority through a second PUCCH resource within the commonly allocated PUCCH resource. Alternatively, the terminal may drop the second PUCCH for an event that occurs or is detected in the next order without transmitting it.

[0279] If the PUCCH resources do not conflict, in step S1807, the terminal transmits a first PUCCH based on the event-specific PUCCH resources. The terminal transmits a first PUCCH corresponding to each of the multiple events using different PUCCH resources associated with each of the multiple events.

[0280] In the embodiments described above, in a situation where a plurality of events are detected, the terminal may transmit at least one first PUCCH based on the aforementioned rule. Here, the plurality of events may be of the same type or different types. Being of the same type means that the conditions for the events are the same. When the types of the events are the same, the aforementioned situation may be understood as a case where events associated with the same conditions are detected for different beams. That is, the aforementioned situation may be understood as a case where a first event associated with a first condition occurs for a first beam, and a second event associated with a second condition occurs for either the first beam or the second beam, or a second event associated with a first condition occurs for a second beam.

[0281]

[0282] The operation of the method according to the present disclosure can be implemented as a computer-readable program or code on a computer-readable recording medium. A computer-readable recording medium includes any type of recording device in which information that can be read by a computer system is stored. Additionally, a computer-readable recording medium may be distributed across networked computer systems, allowing the computer-readable program or code to be stored and executed in a distributed manner.

[0283] In addition, computer-readable recording media may include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Program instructions may include machine code, such as that generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

[0284] Some aspects of the present disclosure have been described in the context of a device, but may also be described according to a corresponding method, wherein a block or device corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method may also be described according to a corresponding block or item or a feature of a corresponding device. Some or all of the method steps may be performed by (or using) a hardware device, such as, for example, a microprocessor, a programmable computer, or an electronic circuit. In some embodiments, at least one of the most important method steps may be performed by such a device.

[0285] A programmable logic device (e.g., a field-programmable gate array) may be used to perform some or all of the functions of the methods described in this disclosure. A field-programmable gate array may operate with a microprocessor to perform one of the methods described in this disclosure. Generally, it is preferable that the methods be performed by some hardware device.

[0286] Although the present disclosure has been described with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present disclosure without departing from the spirit and scope of the present disclosure as set forth in the following claims.

Claims

1. In a method of operation of a terminal in a wireless communication system, A step of receiving configuration information including multiple configurations for a UE-BR (user equipment-initiated / event-driven beam report); A step of detecting a first event for the UE-BR based on at least one of the plurality of configurations included in the above configuration information; A step of transmitting control information for a beam report on a first UL (uplink) channel in response to the detection of the first event; The method includes the step of transmitting the beam report in a second UL channel corresponding to the control information, and The above beam report is a method comprising information related to at least one configuration.

2. In Claim 1, A method comprising at least one of the information related to the above at least one configuration, the information indicating the first event, or the information indicating the configuration that caused the triggering of the UE-BR.

3. In Claim 2, Information indicating the configuration that caused the triggering of the UE-BR comprises information related to at least one of the CSI resource configuration or CSI reporting configuration that caused the triggering of the UE-BR.

4. In Claim 2, A method in which information indicating a configuration that caused the triggering of the above-mentioned UE-BR includes information indicating a set of reference signals (RS) and an event configuration that caused the triggering of the above-mentioned UE-BR.

5. In Claim 1, A method in which information related to at least one configuration above includes information indicating a beam related to the first event.

6. In Claim 5, A method in which information indicating a beam related to the first event includes information indicating whether each of the plurality of beams included in the beam report has satisfied the conditions of the event a specified number of times.

7. In Claim 1, A step of detecting a second event for the above UE-BR; and The method further includes the step of dropping the transmission of the other first UL channel if the transmission time of the first UL channel is within a certain time interval before the transmission time of the other first UL channel for transmitting other control information corresponding to the second event. A method wherein the second event comprises an event linked to conditions different from the first event, or an event linked to conditions similar to the first event and occurring on a beam different from the first event.

8. In Claim 1, A step of detecting a second event for the above UE-BR; and The method further includes the step of dropping the transmission of the other first UL channel if the transmission time of the second UL channel is within a certain time interval before the transmission time of the other first UL channel for transmitting other control information corresponding to the second event. A method wherein the second event comprises an event linked to conditions different from the first event, or an event linked to conditions similar to the first event and occurring on a beam different from the first event.

9. In Claim 1, A step of detecting a second event for the above UE-BR; and The method further includes the step of dropping the transmission of the other first UL channel based on the fact that the transmission time of the first UL channel is prior to the transmission time of the other first UL channel for transmitting other control information corresponding to the second event, and A method wherein the second event comprises an event linked to conditions different from the first event, or an event linked to conditions similar to the first event and occurring on a beam different from the first event.

10. In Claim 1, A step of detecting a second event for the above UE-BR; and The method further includes a step of determining to transmit control information corresponding to the first event based on at least one of the priority between the first event and the second event, the priority of the UE-BR mode corresponding to the first event and the second event, or the detection time of the first event and the second event. A method wherein the second event comprises an event linked to conditions different from the first event, or an event linked to conditions similar to the first event and occurring on a beam different from the first event.

11. In Claim 10, A method in which the resources of the first UL channel associated with the first event and the resources of the first UL channel associated with the second event are identical.

12. In Claim 10, The step of determining to transmit control information corresponding to the first event above is, A step of checking whether the resource of the first UL channel associated with the first event exists within a time offset from the time of detection of the first event; and A method comprising the step of determining to transmit control information corresponding to the first event from the resource of the first UL channel based on the fact that the resource of the first UL channel exists within a time offset.

13. In claim 10, The step of determining to transmit control information corresponding to the first event above is, A step of checking whether the resource of the first UL channel associated with the second event exists within a time offset from the time of detection of the second event; and A method comprising the step of dropping the second event based on the fact that the resource of the first UL channel does not exist within a time offset.

14. In Claim 1, A method in which the plurality of configurations include at least one of a plurality of CSI resource configurations or a plurality of CSI reporting configurations associated with the first UL channel resource.

15. In Claim 1, A method comprising at least one of the above control information, which includes information indicating the first event or information indicating the configuration that caused the triggering of the UE-BR.

16. In a method of operation of a base station in a wireless communication system, A step of transmitting configuration information including multiple configurations for a UE-BR (user equipment-initiated / event-driven beam report); A step of receiving control information for a beam report according to an event for the UE-BR detected based on at least one of the plurality of configurations in a first UL (uplink) channel; The method includes the step of receiving the beam report in a second UL channel corresponding to the control information, The above beam report is a method comprising information related to at least one configuration.

17. In a terminal of a wireless communication system, At least one transmitter / receiver; At least one processor; and It includes at least one memory connected to the above-mentioned at least one processor to enable operation and storing instructions that control the terminal to perform operations when executed by the processor, and The above operations are, A step of receiving configuration information including multiple configurations for a UE-BR (user equipment-initiated / event-driven beam report); A step of detecting an event for the UE-BR based on at least one of a plurality of configurations included in the above configuration information; A step of transmitting control information for a beam report on a first UL (uplink) channel in response to the detection of the first event; The method includes the step of transmitting the beam report in a second UL channel corresponding to the control information, and The above beam report is a terminal that includes information related to at least one configuration.

18. In a base station of a wireless communication system, At least one transmitter / receiver; At least one processor; and It includes at least one memory connected to operately with the above-mentioned at least one processor and storing instructions that control the base station to perform operations when executed by the processor, and The above operations are, A step of transmitting configuration information including multiple configurations for a UE-BR (user equipment-initiated / event-driven beam report); A step of receiving control information for a beam report according to an event for the UE-BR detected based on at least one of the plurality of configurations in a first UL (uplink) channel; The method includes the step of receiving the beam report in a second UL channel corresponding to the control information, The above beam report is a base station that includes information related to at least one configuration.

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