Apparatus and method for controlling the status of sub-settings of channel status information reporting settings in a wireless communication system

Abstract

This disclosure relates to controlling the state of sub-configurations of a CSI (channel state information) reporting setting in a wireless communication system, and the method performed by a terminal includes the steps of: receiving setting information for at least one CSI (channel state information) report including a plurality of sub-configurations; receiving a message including information relating to the activation of each of the plurality of sub-configurations; generating at least one CSI based on at least one activated sub-configuration among the plurality of sub-configurations; and transmitting a CSI report including the at least one CSI.

Description

Technical Field

[0001] The following description relates to a wireless communication system, and to an apparatus and method for controlling the state of sub-configurations of CSI (channel state information) reporting settings in a wireless communication system.

Background Art

[0002] Wireless connection systems have been widely deployed to provide various communication services such as voice and data. In general, a wireless connection system is a multiple access system that can support communication with multiple users by sharing available system resources (bandwidth, transmission power, etc.). Examples of multiple access systems include CDMA (code division multiple access) systems, FDMA (frequency division multiple access) systems, TDMA (time division multiple access) systems, OFDMA (orthogonal frequency division multiple access) systems, SC-FDMA (single carrier frequency division multiple access) systems, and the like.

[0003] Particularly, as many communication devices require a large communication capacity, enhanced mobile broadband (eMBB) communication technologies that are improved compared to existing RAT (radio access technology) have been proposed. In addition, communication systems have been proposed that take into account mMTC (massive machine type communications) that connects a large number of devices and things to provide various services anytime and anywhere, as well as reliability and latency-sensitive services / UE (user equipment). Various technical configurations have been proposed for that purpose.

Summary of the Invention

[0004] This disclosure relates to an apparatus and method for feeding back channel state information (CSI) in a wireless communication system, taking into account the energy-saving operation of a base station.

[0005] This disclosure relates to an apparatus and method for controlling the amount of CSI reporting in a wireless communication system, taking into account the energy-saving operation of a base station.

[0006] This disclosure relates to an apparatus and method for reporting CSIs in a wireless communication system based on sub-configurations included in a CSI report configuration.

[0007] This disclosure relates to an apparatus and method for controlling the state of sub-configurations for CSI reporting in a wireless communication system.

[0008] This disclosure relates to an apparatus and method for determining whether or not to activate sub-settings for CSI reporting in a wireless communication system.

[0009] This disclosure relates to an apparatus and method for signaling whether or not to activate sub-settings for CSI reporting in a wireless communication system.

[0010] This disclosure relates to an apparatus and method for signaling whether a CSI reporting setting can be activated and whether the sub-settings of each CSI reporting setting can be activated in a wireless communication system.

[0011] This disclosure relates to an apparatus and method for providing rules for determining whether a sub-setting can be activated based on whether a CSI reporting setting can be activated in a wireless communication system.

[0012] This disclosure relates to an apparatus and method for signaling whether a wireless communication system includes information related to the activation of sub-configurations for CSI reporting.

[0013] This disclosure relates to an apparatus and method for controlling the state of sub-settings in a wireless communication system based on the relationships between sub-settings.

[0014] The technical objectives to be achieved in this disclosure are not limited to those mentioned above, and other technical challenges not mentioned can be considered by a person skilled in the art to which the technical configuration of this disclosure applies, based on the embodiments of this disclosure described below. [Means for solving the problem]

[0015] As an example of the present disclosure, a method performed by a terminal in a wireless communication system includes the steps of: receiving configuration information for at least one channel state information (CSI) report comprising a plurality of sub-configurations; receiving a message comprising information relating to the activation of each of the plurality of sub-configurations; generating at least one CSI based on at least one activated sub-configuration among the plurality of sub-configurations; and transmitting a CSI report comprising the at least one CSI. Here, the at least one CSI report configuration comprises a first CSI report configuration and a second CSI report configuration, and the message comprises a first set of fields indicating whether the sub-configurations included in the first CSI report configuration can be activated and a second set of fields indicating whether the sub-configurations included in the second CSI report configuration can be activated.

[0016] As an example of the present disclosure, a terminal in a wireless communication system includes a transceiver; and a processor connected to the transceiver; wherein the processor is configured to receive configuration information for at least one channel state information (CSI) report including a plurality of sub-configurations, receive a message containing information related to the activation of each of the plurality of sub-configurations, generate at least one CSI based on at least one activated sub-configuration among the plurality of sub-configurations, and transmit a CSI report including the at least one CSI. Here, the at least one CSI report configuration includes a first CSI report configuration and a second CSI report configuration, and the message includes a first set of fields indicating whether the sub-configurations included in the first CSI report configuration can be activated, and a second set of fields indicating whether the sub-configurations included in the second CSI report configuration can be activated.

[0017] As an example of the present disclosure, a communication device includes at least one processor and at least one computer memory connected to the at least one processor and storing instruction words that instruct an operation to be executed by the at least one processor, the operation including the steps of: receiving configuration information for at least one channel state information (CSI) report including a plurality of sub-configurations; receiving a message including information relating to the activation of each of the plurality of sub-configurations; generating at least one CSI based on at least one activated sub-configuration among the plurality of sub-configurations; and transmitting a CSI report including the at least one CSI. Here, the at least one CSI report configuration includes a first CSI report configuration and a second CSI report configuration, and the message includes a first set of fields indicating whether the sub-configurations included in the first CSI report configuration can be activated and a second set of fields indicating whether the sub-configurations included in the second CSI report configuration can be activated.

[0018] As an example of the present disclosure, a non-transitory computer-readable medium storing at least one instruction includes the processor-executable at least one instruction which instructs the device to receive configuration information for at least one channel state information (CSI) report including a plurality of sub-configurations, receive a message which includes information relating to the activation of each of the plurality of sub-configurations, generate at least one CSI based on at least one activated sub-configuration among the plurality of sub-configurations, and transmit a CSI report which includes the at least one CSI. Here, the at least one CSI report configuration includes a first CSI report configuration and a second CSI report configuration, and the message includes a first set of fields which indicates whether the sub-configurations included in the first CSI report configuration can be activated and a second set of fields which indicates whether the sub-configurations included in the second CSI report configuration can be activated.

[0019] The aspects of the Disclosure described herein represent only a selection of preferred embodiments of the Disclosure, and a variety of embodiments reflecting the technical features of the Disclosure can be derived and understood by a person ordinary in the art based on the detailed description of the Disclosure described below. [Effects of the Invention]

[0020] The embodiments based on this disclosure will produce the following effects.

[0021] According to this disclosure, the overhead of CSI reporting by terminals can be reduced in CSI reporting based on sub-configurations of CSI (channel state information) reporting settings.

[0022] The effects obtainable from the embodiments of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood by those with ordinary knowledge in the technical field to which the technical configuration of the present disclosure is applied from the description of the embodiments of the present disclosure below. That is, unintended effects resulting from implementing the configurations described in the present disclosure can also be derived by those with ordinary knowledge in the technical field from the embodiments of the present disclosure.

Brief Description of the Drawings

[0023] [Figure 1] It is a diagram illustrating the structure of a wireless communication system to which the present disclosure can be applied. [Figure 2] It is a diagram showing an example of a wireless device to which the present disclosure can be applied. [Figure 3] It illustrates physical channels used in a wireless communication system to which the present disclosure can be applied and a general signal transmission / reception method using these channels. [Figure 4] It shows an example of a beam to which the present disclosure can be applied. [Figure 5] It shows an example of a DL BM (downlink beam management) procedure using an SSB (synchronization signal block) to which the present disclosure can be applied. [Figure 6] It shows an example of a DL BM procedure using a CSI (channel state information)-RS (reference signal) to which the present disclosure can be applied. [Figure 7] It shows an example of a receiving beam determination procedure for a terminal to which the present disclosure can be applied. [Figure 8] It shows an example of a transmitting beam determination procedure for a base station to which the present disclosure can be applied. [Figure 9] It shows an example of resource allocation in the time and frequency domains to which the present disclosure can be applied. [Figure 10]This disclosure provides an example of beam sweeping for UL BM (uplink beam management) using a sounding reference signal (SRS), which can be applied to this disclosure. [Figure 11] This disclosure provides an example of an SRS-based UL BM procedure that can be applied to this disclosure. [Figure 12] This disclosure provides an example of the operating procedure for a base station supporting network energy saving (NES) technology that can be applied to this disclosure. [Figure 13] Examples of procedures for CSI measurement and reporting that may be applied to this disclosure are provided. [Figures 14a-14c] An example of the state of an antenna element according to one embodiment of this disclosure is shown. [Figure 15] One embodiment of this disclosure provides an example of a procedure for instructing the activation of sub-settings of CSI reporting settings. [Figure 16] One embodiment of this disclosure provides an example of a procedure for verifying the activation of sub-settings in CSI reporting settings. [Figures 17a-17f] An example of the structure of a MAC CE that controls CSI reporting according to one embodiment of this disclosure is shown. [Figure 18] One embodiment of this disclosure provides an example of a procedure for controlling the state of sub-settings based on the linkage between sub-settings. [Figure 19] One embodiment of this disclosure provides an example of a procedure for sending a CSI report based on sub-configurations. [Modes for carrying out the invention]

[0024] The following embodiments combine the components and features of the Disclosure in a predetermined form. Each component or feature can be considered optional unless otherwise expressly mentioned. Each component or feature can be implemented in a form not combined with other components or features. Alternatively, some components and / or features can be combined to constitute embodiments of the Disclosure. The order of operations described in the embodiments of the Disclosure may be changed. Some components or features of any embodiment may be included in other embodiments, or may be replaced with corresponding components or features of other embodiments.

[0025] In describing the drawings, we have not included any procedures or steps that may obscure the gist of this disclosure, nor have we included any procedures or steps that would be understandable to a person skilled in the art.

[0026] Throughout the specification, when a part "comprising or including" a component, this means, unless otherwise stated, that it may include other components rather than excluding them. Furthermore, terms such as "...part," "...unit," and "module" as used in the specification mean a unit that performs at least one function or operation, which can be realized in hardware, software, or a combination of hardware and software. Also, "a or an," "one," "the," and similar related terms can be used in both singular and plural senses in the context describing this disclosure (particularly in the context of the following claims), unless otherwise indicated herein or explicitly refuted by the context.

[0027] In this specification, embodiments of the present disclosure have been described primarily in relation to the data transmission and reception relationship between a base station and a mobile station. Here, a base station refers to a terminal node of a network that communicates directly with a mobile station. Certain operations described herein as being performed by a base station may, in some cases, be performed by an upper node of the base station.

[0028] In other words, in a network consisting of multiple network nodes, including a base station, various operations performed for communication with a mobile station can be carried out by the base station or other network nodes. In this case, "base station" can be replaced with terms such as fixed station, Node B, eNB (eNode B), gNB (gNode B), ng-eNB, advanced base station (ABS), or access point.

[0029] Furthermore, in the embodiments of this disclosure, the term "terminal" may be replaced with terms such as user equipment (UE), mobile station (MS), subscriber station (SS), mobile subscriber station (MSS), mobile terminal, or advanced mobile station (AMS).

[0030] Furthermore, the transmitting end refers to a fixed and / or mobile node providing data or voice services, and the receiving end refers to a fixed and / or mobile node receiving data or voice services. Therefore, in the case of an uplink, a mobile station can be the transmitting end and a base station can be the receiving end. Similarly, in the case of a downlink, a mobile station can be the receiving end and a base station can be the transmitting end.

[0031] The embodiments of this disclosure can be supported by standard documents disclosed in at least one of the following wireless connectivity systems: IEEE 802.xx systems, 3GPP (3rd Generation Partnership Project: registered trademark; hereinafter the same) systems, 3GPP LTE (Long Term Evolution) systems, 3GPP 5G (5th generation) NR (New Radio) systems, and 3GPP2 systems. In particular, the embodiments of this disclosure can be supported by 3GPP TS (technical specification) 38.211, 3GPP TS 38.212, 3GPP TS 38.213, 3GPP TS 38.321, and 3GPP TS 38.331 documents.

[0032] Furthermore, the embodiments of this disclosure can be applied to other wireless connectivity systems and are not limited to the systems described above. For example, they can be applied to systems subsequently applied to 3GPP 5G NR systems and are not limited to any particular system.

[0033] In other words, any obvious steps or parts of the embodiments of this disclosure that are not described can be explained by referring to the above-mentioned documents. Furthermore, all terms disclosed herein can be explained by the aforementioned standard documents.

[0034] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The detailed description disclosed below, together with the accompanying drawings, is intended to illustrate exemplary embodiments of the present disclosure and is not intended to show only the few embodiments in which the technical configuration of the present disclosure can be implemented.

[0035] Furthermore, certain terms used in the embodiments of this disclosure are provided for the purpose of aiding the understanding of this disclosure, and the use of such specific terms may be modified in other forms as long as it does not deviate from the technical idea of ​​this disclosure.

[0036] The following technologies can be applied to various wireless connectivity systems such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), and SC-FDMA (single carrier frequency division multiple access).

[0037] For the sake of clarity, the following explanation will be based on 3GPP communication systems (e.g., LTE, NR, etc.), but the technical concepts of this disclosure are not limited thereto. LTE may refer to 3GPP TS 36.xxx Release 8 or later technologies. More specifically, LTE technologies from 3GPP TS 36.xxx Release 10 onwards are sometimes called LTE-A, and LTE technologies from 3GPP TS 36.xxx Release 13 onwards are sometimes called LTE-A pro. 3GPP NR may refer to TS 38.xxx Release 15 or later technologies. 3GPP 6G may refer to TS Release 17 and / or Release 18 or later technologies. "xxx" refers to the specification number of the standard document. LTE / NR / 6G may be referred to as 3GPP systems.

[0038] 3GPP 6G can refer to technologies based on the 3GPP system that are post-3GPP NR. 3GPP 6G is not limited to Releases or specific TS documents, and its name may differ from 3GPP 6G. In other words, 3GPP 6G can refer to technologies introduced after 3GPP NR and is not limited to a specific form.

[0039] The following discussion will focus primarily on the 3GPP NR system, but will not be limited to it; it is also applicable to 3GPP 6G. Furthermore, the matters described below can be modified and used in consideration of the 3GPP 6G system, and are not limited to any particular form. However, for the sake of clarity, the following discussion will focus primarily on the 3GPP NR system. For background information, terminology, abbreviations, etc., used in this disclosure, refer to the standards documents published prior to this disclosure. For example, refer to the 36.xxx and 38.xxx standards documents.

[0040] General System

[0041] As more communication devices demand greater communication capacity, the need for improved mobile broadband communication compared to existing radio access technology (RAT) is emerging. Massive Machine Type Communications (MTC), which connects numerous devices and things to provide various services anytime, anywhere, is also a major issue being considered in next-generation communications. Furthermore, communication system design that takes into account reliability and latency-sensitive services / terminals is being discussed. Thus, the introduction of next-generation RATs that consider eMBB (enhanced mobile broadband communication), mMTC (massive MTC), URLLC (Ultra-Reliable and Low Latency Communication), etc., is being discussed, and for convenience, this disclosure refers to such technologies as NR. NR is an expression that represents an example of 5G RAT.

[0042] The new RAT system, including NR, uses the OFDM transmission method or a similar transmission method. The new RAT system can follow OFDM parameters different from those of LTE. Alternatively, the new RAT system can follow the existing LTE / LTE-A numerology but support a larger system bandwidth (e.g., 100 MHz). Alternatively, a single cell can support multiple numerologies; that is, terminals operating with different numerologies can coexist within a single cell.

[0043] A numerology corresponds to a single subcarrier spacing in the frequency domain. Different numerologies can be defined by scaling the reference subcarrier spacing by an integer N.

[0044] Furthermore, new RAT systems, including 6G, can be considered as next-generation RATs. These new RAT systems, including 6G, may, but are not limited to, i) extremely high data rates per device, ii) a very large number of connected devices, iii) global connectivity, iv) very low latency, v) low energy consumption for battery-free IoT devices, vi) ultra-high reliability connectivity, and vii) connected intelligence with machine learning capabilities. Taking the aforementioned aspects into account, new RAT systems, including 6G, may consider using the THz (Terahertz) frequency band at higher frequencies than NR systems for wider bandwidth and higher transmission speeds. New RAT systems, including 6G, may, but are not limited to, applying AI / ML (artificial intelligence / machine learning) to overcome existing limitations.

[0045] Figure 1 illustrates the structure of a wireless communication system to which this disclosure can be applied. Referring to Figure 1, the NG-RAN consists of the NG-RA (NG-Radio Access) user plane (i.e., the new AS (access stratum) sublayer / PDCP (Packet Data Convergence Protocol) / RLC (Radio Link Control) / MAC / PHY) and a gNB that provides control plane (RRC) protocol termination to the UE. The gNBs are interconnected via the Xn interface. The gNBs are also connected to the NGC (New Generation Core) via the NG interface. More specifically, the gNBs are connected to the AMF (Access and Mobility Management Function) via the N2 interface and to the UPF (User Plane Function) via the N3 interface. Figure 1 is a structure based on an NR system, and in a 6G system, the structure of Figure 1 may be used identically or with some modifications, and is not limited to a particular form.

[0046] Figure 2 shows an example of a wireless device applicable to this disclosure.

[0047] Referring to Figure 2, the wireless device 200 can transmit and receive wireless signals via various wireless connectivity technologies (e.g., LTE, LTE-A, LTE-A pro, NR, 5G, 5G-A, 6G). The wireless device 200 includes at least one processor 202 and at least one memory 204, and may further include at least one transceiver 206 and / or at least one antenna 208.

[0048] The processor 202 can be configured to control the memory 204 and / or the transceiver 206 to implement the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. For example, the processor 202 can process information in the memory 204 to generate first information / signals, and then transmit a radio signal containing the first information / signals via the transceiver 206. Alternatively, the processor 202 can receive a radio signal containing second information / signals via the transceiver 206, and then store information obtained from signal processing of the second information / signals in the memory 204. The memory 204 can be connected to the processor 202 and can store various information relating to the operation of the processor 202. For example, the memory 204 can store software code containing instructions for performing some or all of the processes controlled by the processor 202, or for performing the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein. Here, the processor 202 and the memory 204 may be part of a communication modem / circuit / chip designed to implement wireless communication technology. The transceiver 206 can be connected to the processor 202 and can transmit and / or receive radio signals via at least one antenna 208. The transceiver 206 may include a transmitter and / or receiver. The transceiver 206 can be used in combination with an RF (radio frequency) unit. In this disclosure, the term "wireless device" may also mean a communication modem / circuit / chip.

[0049] The hardware elements of the wireless device 200 will be described in more detail below. While not limited to these, at least one protocol layer can be implemented by at least one processor 202. For example, at least one processor 202 can implement at least one layer (e.g., a functional layer such as PHY (physical), MAC (media access control), RLC (radio link control), PDCP (packet data convergence protocol), RRC (radio resource control), SDAP (service data adaptation protocol)). At least one processor 202 can generate at least one PDU (Protocol Data Unit) and / or at least one SDU (service data unit) according to the descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed herein. At least one processor 202 can generate messages, control information, data, or information according to the descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed herein. At least one processor 202 can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information in accordance with the functions, procedures, suggestions and / or methods disclosed herein and provide them to at least one transceiver 206. At least one processor 202 can receive signals (e.g., baseband signals) from at least one transceiver 206 and acquire PDUs, SDUs, messages, control information, data, or information in accordance with the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein.

[0050] At least one processor 202 is also called a controller, microcontroller, microprocessor, or microcomputer. At least one processor 202 can be implemented by hardware, firmware, software, or a combination thereof. As an example, at least one ASIC (application specific integrated circuit), at least one DSP (digital signal processor), at least one DSPD (digital signal processing device), at least one PLD (programmable logic device), or at least one FPGA (field programmable gate arrays) may be included in at least one processor 202. The descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein can be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. Firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein may be included in at least one processor 202 or stored in at least one memory 204 and driven by at least one processor 202. The descriptions, functions, procedures, suggestions, methods and / or operational flowcharts disclosed herein can be implemented using firmware or software in the form of code, commands and / or sets of commands.

[0051] At least one memory 204 can be connected to at least one processor 202 and can store data, signals, messages, information, programs, code, instructions and / or commands in various forms. At least one memory 204 can consist of ROM (read-only memory), RAM (random access memory), EPROM (erasable programmable read-only memory), flash memory, hard drive, registers, cache memory, computer-readable storage media, and / or a combination thereof. At least one memory 204 can be located inside and / or outside at least one processor 202. Furthermore, at least one memory 204 can be connected to at least one processor 202 via various technologies such as wired or wireless connections.

[0052] At least one transceiver 206 can transmit user data, control information, radio signals / channels, etc., as described in the methods and / or operation flowcharts of this specification, to at least one other device. At least one transceiver 206 can receive user data, control information, radio signals / channels, etc., as described in the descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed herein, from at least one other device. For example, at least one transceiver 206 can be connected to at least one processor 202 and can transmit and receive radio signals. For example, at least one processor 202 can control at least one transceiver 206 to transmit user data, control information, or radio signals to at least one other device. Also, at least one processor 202 can control at least one transceiver 206 to receive user data, control information, or radio signals from at least one other device. Furthermore, at least one transceiver 206 can be connected to at least one antenna 208, and at least one transceiver 206 can be configured to send and receive user data, control information, radio signals / channels, etc., as described herein in the descriptions, functions, procedures, suggestions, methods and / or operation flowcharts, etc. In this specification, at least one antenna may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). At least one transceiver 206 can convert the received user data, control information, radio signals / channels, etc., from RF band signals to baseband signals for processing using at least one processor 202. At least one transceiver 206 can convert the user data, control information, radio signals / channels, etc., processed by at least one processor 202, from baseband signals to RF band signals. For this purpose, at least one transceiver 206 may include an (analog) oscillator and / or a filter.

[0053] The components of the wireless device described with reference to Figure 2 may be referred to by other terms from a functional standpoint. For example, the processor 202 may be called the control unit, the transceiver 206 the communication unit, and the memory 204 the storage unit. Depending on the context, the term "communication unit" may be used to include at least a portion of the processor 202 and the transceiver 206.

[0054] The structure of the wireless device described with reference to Figure 2 can be understood as the structure of at least a part of various devices. For example, it is at least a part of various devices (e.g., robots, vehicles, XR devices, mobile devices, home appliances, IoT devices, AI devices / servers, etc.). Furthermore, depending on the various embodiments, the device may further include other components in addition to the components illustrated in Figure 2.

[0055] For example, the device may be a portable device such as a smartphone, smart pad, wearable device (e.g., smartwatch, smart glasses), or portable computer (e.g., laptop computer). In this case, the device may further include at least one of the following: a power supply unit that supplies power and includes a wired / wireless charging circuit, a battery, etc.; an interface unit that includes at least one port for connection with other devices (e.g., an audio input / output port, a video input / output port); and an input / output unit for inputting and outputting image information / signals, audio information / signals, data, and / or information input from the user.

[0056] For example, the device may be a mobile robot, vehicle, train, aerial vehicle (AV), ship, or other mobile device. In this case, the device may further include a drive unit including at least one of the device's engine, motor, powertrain, wheels, brakes, and steering device; a power supply unit that supplies power and includes a wired / wireless charging circuit, battery, etc.; a sensor unit that detects status information, environmental information, and user information of the device or its surroundings; an autonomous driving unit that performs functions such as route keeping, speed adjustment, and destination setting; and a position measurement unit that acquires position information of the mobile device via GPS (global positioning system) and various sensors.

[0057] For example, the device is an XR device such as an HMD, a HUD (head-up display) installed in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, digital signage, a vehicle, or a robot. In this case, the device may further include at least one of the following: a power supply unit that supplies power and includes wired / wireless charging circuits and a battery; an input / output unit that acquires control information, data, etc. from the outside and outputs generated XR objects; and a sensor unit that detects status information, environmental information, and user information of the device or its surroundings.

[0058] For example, the device is a robot that can be classified as industrial, medical, household, military, etc., depending on its intended use and field. In this case, the device may further include at least one of the following: a sensor unit that detects status information, environmental information, and user information of the device or its surroundings; and a drive unit that performs various physical actions such as moving robot joints.

[0059] For example, the devices are AI devices such as televisions, projectors, smartphones, PCs, laptops, digital broadcasting terminals, tablet PCs, wearable devices, set-top boxes (STBs), radios, washing machines, refrigerators, digital signage, robots, and vehicles. In this case, the device may further include at least one of the following: an input unit that acquires various types of data from the outside; an output unit that generates outputs related to vision, hearing, or touch; a sensor unit that detects state information, environmental information, and user information of the device or its surroundings; and a training unit that learns a model composed of an artificial neural network using training data. The structure of the wireless device illustrated in Figure 2 can be understood as part of a RAN node (e.g., base station, DU, RU, RRH, etc.). That is, the device illustrated in Figure 2 may be a RAN node. In this case, the device may further include wired transceivers for front haul and / or back haul communication. However, if the fronthaul and / or backhaul communication is based on wireless communication, at least one transceiver 206 as illustrated in Figure 2 may be used for the fronthaul and / or backhaul communication, and a wired transceiver may not be included.

[0060] Figure 3 illustrates physical channels used in wireless communication systems to which this disclosure can be applied, and typical signal transmission and reception methods using them.

[0061] In wireless communication systems, terminals receive information from base stations via the downlink and transmit information to base stations via the uplink. The information transmitted and received between base stations and terminals includes data and various control information, and various physical channels exist depending on the type and purpose of the information being transmitted and received.

[0062] When a terminal is powered on or enters a new cell, it performs initial cell search operations, such as synchronizing with the base station (S301). Therefore, the terminal receives the Primary Synchronization Signal (PSS) and Secondary Synchronization Signal (SSS) from the base station to synchronize with it and obtain information such as the cell identifier (ID). Subsequently, the terminal receives the Physical Broadcast Channel (PBCH) from the base station to obtain broadcast information within the cell. Meanwhile, during the initial cell search phase, the terminal receives the Downlink Reference Signal (DL RS) to check the downlink channel status.

[0063] After completing the initial cell search, the terminal can obtain more specific system information by receiving the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH) based on the information carried on the PDCCH (S302).

[0064] On the other hand, if the terminal is initially connected to a base station or does not have radio resources for signal transmission, it can perform a Random Access Procedure (RACH) to the base station (steps S303 to S306). Therefore, the terminal can send a specific sequence to the preamble via a Physical Random Access Channel (PRACH) (S303 and S305) and receive a response message to the preamble via the PDCCH and corresponding PDSCH (S304 and S306). In the case of a contention-based RACH, a Contention Resolution Procedure can be performed.

[0065] A terminal that has followed the procedures described above can subsequently perform PDCCH / PDSCH reception (S307) and Physical Uplink Shared Channel (PUSCH) / Physical Uplink Control Channel (PUCCH) transmission (S308) as general uplink signal transmission procedures. In particular, the terminal receives Downlink Control Information (DCI) via PDCCH. Here, DCI includes control information such as resource allocation information for the terminal, and its format differs from one another depending on its intended use.

[0066] On the other hand, control information that a terminal transmits to or receives from a base station via the uplink includes down / uplink ACK / NACK (Acknowledgement / Non-Acknowledgement) signals, CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indicator), etc. In the case of a 3GPP LTE system, the terminal can transmit the aforementioned control information such as CQI / PMI / RI via PUSCH and / or PUCCH.

[0067] Beam Management (BM)

[0068] A beam set (BM) procedure is an L1 (layer 1) / L2 (layer 2) procedure for acquiring and maintaining a beam set of a base station (e.g., gNB, TRP, etc.) and / or terminal (e.g., UE) that can be used for downlink (DL) and uplink (UL) transmission / reception, and may include the following procedures and terms:

[0069] - Beam measurement: An operation in which a base station or UE measures the characteristics of a beamforming signal received.

[0070] - Beam determination: The operation in which a base station or UE selects its own transmit beam (Tx beam) / receive beam (Rx beam).

[0071] - Beam sweeping: An operation that uses transmitted and / or received beams to cover a spatial area at regular time intervals in a predetermined manner.

[0072] - Beam report: An operation in which the UE reports information about the beamformed signal based on beam measurements.

[0073] BM procedures can be divided into (1) DL BM procedures using SS (synchronization signal) / PBCH (physical broadcast channel) blocks or CSI-RS, and (2) UL BM procedures using SRS (sounding reference signal).

[0074] Furthermore, each BM procedure may include a Tx beam sweep to determine the Tx beam and an Rx beam sweep to determine the Rx beam.

[0075]

[0076] The DL BM procedure can include (1) transmission for beamformed DL RS (reference signal) (e.g., CSI-RS or SS block (SSB)) of the base station, and (2) beam reporting of the terminal.

[0077] Here, the beam report can include preferred DL RS ID(s) (identifier) and the corresponding L1-RSRP (Reference Signal Received Power).

[0078] The DL RS ID can be an SSBRI (SSB Resource Indicator) or a CRI (CSI-RS Resource Indicator).

[0079] As shown in FIG. 4, the SSB beam and the CSI-RS beam can be used for beam measurement. The measurement metric is the L1-RSRP per resource / block. The SSB can be used for coarse beam measurement, and the CSI-RS can be used for fine beam measurement. The SSB can be used for both Tx beam sweeping and Rx beam sweeping.

[0080] Rx beam sweeping using the SSB can be performed while the UE changes the Rx beam for the same SSBRI across multiple SSB bursts. Here, one SS burst includes one or more SSBs, and one set of SS bursts includes one or more SSB bursts.

[0081]

[0082] Figure 5 is a flowchart showing an example of a DL BM procedure using SSB.

[0083] The settings for beam reporting using SSB are performed during CSI / beam setup in RRC-connected state (or RRC-connected mode).

[0084] - The terminal receives a CSI-ResourceConfig IE from the base station, which includes a CSI-SSB-ResourceSetList containing the SSB resources used for BM (S410).

[0085] As shown in Table 1's CSI-ResourceConfig IE, BM settings using SSB are not defined separately; instead, SSB is configured like a CSI-RS resource.

[0086] [Table 1]

[0087] Table 1 shows that the csi-SSB-ResourceSetList parameter represents a list of SSB resources used for beam management and reporting in a single resource set. Here, the SSB resource set can be set to {SSBx1, SSBx2, SSBx3, SSBx4, ...}. The SSB index can be defined from 0 to 63. - The terminal receives the SSB resource from the base station based on the SSB-ResourceSetList (S420). - If a CSI-RS reportConfig associated with reporting to the SSBRI and L1-RSRP is set, the terminal reports the best SSBRI and its corresponding L1-RSRP to the base station (beam) (S430).

[0088] That is, when the reportQuantity of the CSI-RS reportConfig IE is set to "ssb-Index-RSRP", the terminal reports the best SSBRI and the corresponding L1-RSRP to the base station.

[0089] In addition, when the CSI-RS resource is set in the same OFDM symbol as the SSB (SS / PBCH block) and "QCL-TypeD" is applicable, the terminal can assume that the CSI-RS and the SSB are quasi co-located from the perspective of "QCL-TypeD".

[0090] Here, the QCL TypeD can mean that it is QCL between antenna ports from the perspective of the spatial Rx parameter. When the terminal receives multiple DL antenna ports in the relationship of QCL Type D, the same reception beam can be applied. Also, the terminal does not expect the CSI-RS to be set in the RE overlapping with the RE of the SSB.

[0091]

[0092] Regarding the CSI-RS usage, i) when the repetition parameter is set for a specific CSI-RS resource set and the TRS_info is not set, the CSI-RS is used for beam management. ii) when the repetition parameter is not set and the TRS_info is set, the CSI-RS is used for the TRS (tracking reference signal). iii) when the repetition parameter is not set and the TRS_info is not set, the CSI-RS is used for CSI acquisition. <

[0093] Such repetition parameters can only be set for CSI-RS resource sets linked to L1 RSRP or CSI-ReportConfig that have a "No Report (or None)" report.

[0094] If a terminal receives a CSI-ReportConfig setting where reportQuantity is set to "cri-RSRP" or "none", and the CSI-ResourceConfig for channel measurement (higher layer parameter resourcesForChannelMeasurement) does not include the higher layer parameter "trs-Info", and includes an NZP-CSI-RS-ResourceSet with the higher layer parameter "repetition", then the terminal can consist only of ports (1-port or 2-port) with the same number and the higher layer parameter "nrofPorts" for all CSI-RS resources within the NZP-CSI-RS-ResourceSet.

[0095] When the (higher layer parameter) repetition is set to "ON", it is associated with the terminal's Rx beam sweeping procedure. In this case, when the terminal receives the NZP-CSI-RS-ResourceSet configuration, the terminal can assume that at least one CSI-RS resource in the NZP-CSI-RS-ResourceSet is transmitted to the same downlink spatial domain transmission filter. That is, at least one CSI-RS resource in the NZP-CSI-RS-ResourceSet is transmitted over the same Tx beam. Here, at least one CSI-RS resource in the NZP-CSI-RS-ResourceSet may be transmitted with different OFDM symbols. The terminal does not expect all CSI-RS resources in the NZP-CSI-RS-ResourceSet to receive different periodicities in periodicityAndOffset.

[0096] In contrast, when Repetition is set to "OFF", it is associated with the base station's Tx beam sweeping procedure. In this case, when repetition is set to "OFF", the terminal does not assume that at least one CSI-RS resource in the NZP-CSI-RS-ResourceSet is sent to the same downlink spatial domain transmission filter. That is, at least one CSI-RS resource in the NZP-CSI-RS-ResourceSet is sent via different Tx beams.

[0097] Figure 6 shows an example of a DL BM procedure using CSI-RS. Figure 6a shows the procedure for determining (or improving) the terminal's Rx beam, and Figure 6b shows the procedure for determining the base station's Tx beam. In Figure 6a, the repeat parameter is set to "ON", and in Figure 6b, the repeat parameter is set to "OFF".

[0098] Refer to Figures 6a and 7 to see the determination process of the terminal's Rx beam.

[0099] Figure 7 is a flowchart showing an example of the process for determining the received beam of a terminal.

[0100] The terminal receives an NZP CSI-RS resource set IE from the base station via RRC signaling, which includes a repeating parameter for the upper layer (S610). Here, the repeating parameter is set to "ON".

[0101] The terminal repeatedly receives resources within the CSI-RS resource set that are repeatedly set to "ON" via the same Tx beam (or DL ​​spatial domain transfer filter) of the base station, each with different OFDM symbols (S620).

[0102] The terminal determines its own Rx beam (S630).

[0103] The terminal may omit the CSI report or forward the CSI report, including CRI / L1-RSRP, to the base station (S640). In this case, the reportQuantity in the CSI report config can be set to "No report (or None)" or "CRI and L1-RSRP".

[0104] In other words, if the terminal is repeatedly set to "ON", it is possible to omit CSI reporting.

[0105] Refer to Figures 6b and 8 to see the Tx beam determination process for the base station.

[0106] Figure 8 is a flowchart showing an example of the base station's transmission beam determination process.

[0107] The terminal receives an NZP CSI-RS resource set IE from the base station via RRC signaling, which includes a repetition of higher-layer parameters (S810). Here, the repetition of parameters is set to "OFF" and is associated with the base station's Tx beam sweeping procedure.

[0108] Furthermore, the terminal receives resources within the CSI-RS resource set that are repeatedly set to "OFF" via different Tx beams (DL spatial domain transfer filters) of the base station (S820).

[0109] Furthermore, the terminal selects (or determines) the best beam (S830).

[0110] The terminal reports the ID and associated quality information (e.g., L1-RSRP) for the selected beam to the base station (S840). In this case, the reportQuantity in the CSI report config can be set to "CRI+L1-RSRP".

[0111] In other words, when CSI-RS is transmitted for BM, the terminal reports CRI and the corresponding LI-RSRP to the base station.

[0112] Figure 9 shows an example of resource allocation in the time and frequency domains related to the operation shown in Figure 6.

[0113] In other words, when the CSI-RS resource set is repeatedly set to "ON," multiple CSI-RS resources are repeatedly used, applying the same transmit beam. Conversely, when the CSI-RS resource set is repeatedly set to "OFF," different CSI-RS resources are transferred to different transmit beams.

[0114] <dl bm関連のビーム指示(beam indication)>

[0115] The terminal can receive RRC settings for a list of up to M candidate Transmission Configuration Indication (TCI) states, at least for the purpose of QCL (Quasi Co-location) instruction, where M can be 64.

[0116] Each TCI state can be assigned to a single RS set. At least the ID of each DL RS for spatial QCL purposes (QCL Type D) within the RS set can refer to one of the DL RS types, such as SSB, P-CSI RS, SP-CSI RS, A-CSI RS, etc.

[0117] The initialization / update of DL RS IDs within an RS set used at least for spatial QCL purposes can be performed at least via explicit signaling.

[0118] Table 2 shows an example of a TCI-State IE. A TCI-State IE is associated with the corresponding quasi co-location (QCL) type of one or two DL reference signals (RS).

[0119] [Table 2]

[0120] In Table 2, the bwp-Id parameter indicates the DL BWP on which the RS is located, the cell parameter indicates the carrier on which the RS is located, and the referencesignal parameter indicates the reference antenna port or reference signal containing it that serves as the source of quasi co-location for the target antenna port. The target antenna port may be a CSI-RS, PDCCH DMRS, or PDSCH DMRS. For example, to specify RS information for a QCL reference to an NZP CSI-RS, the corresponding TCI state ID can be specified in the resource configuration information of the NZP CSI-RS. Another example is specifying the TCI state ID in the settings of each CORESET to specify QCL reference information for a PDCCH DMRS antenna port. Yet another example is specifying the TCI state ID via DCI to specify QCL reference information for a PDSCH DMRS antenna port.

[0121] <QCL(Quasi-Co Location)>

[0122] Antenna ports are defined such that the channels on which symbols are carried on an antenna port can be inferred from the channels on which other symbols on the same antenna port are carried. If the properties of the channels on which symbols are carried on one antenna port can be inferred from the channels on which symbols are carried on another antenna port, then the two antenna ports are said to be in a QC / QCL (quasi co-located or quasi co-location) relationship.

[0123] Here, the channel characteristics include one or more of the following: delay spread, Doppler spread, frequency / Doppler shift, average received power, received timing / average delay, and spatial RX parameter. Here, the spatial Rx parameter refers to a spatial (received) channel characteristic parameter such as angle of arrival.

[0124] The terminal can be configured in a list of up to M TCI-State configurations within the higher-level parameter PDSCH-Config in order to decode the PDSCH with the detected PDCCH having the intended DCI for the terminal and the given serving cell. The number M depends on the UE capability.

[0125] Each TCI-State includes parameters for setting the quasi-co-location relationship between one or two DL reference signals and the DM-RS port of the PDSCH.

[0126] The Quasi co-location relationship is determined by the higher-level parameter qcl-Type1 for the first DL RS and qcl-Type2 (if set) for the second DL RS. For two DL RSs, the QCL type is not the same regardless of whether the references are the same DL RS or different DL RSs.

[0127] The quasi co-location type corresponding to each DL RS is given by the qcl-Type parameter in the higher layer of QCL-Info, and can take one of the following values.

[0128] - "QCL-TypeA": {Doppler shift, Doppler spread, average delay, delay spread}

[0129] - "QCL-TypeB": {Doppler shift, Doppler spread}

[0130] - "QCL-TypeC": {Doppler shift, average delay}

[0131] - "QCL-TypeD":{Spatial Rx parameter}

[0132] For example, if a target antenna port is a specific NZP CSI-RS, that NZP CSI-RS antenna port can be instructed / configured to be QCL-Type A with a specific TRS and QCL-Type D with a specific SSB. A terminal that receives such instructions / configurations can receive the NZP CSI-RS using the Doppler and delay values ​​measured on the QCL-Type A TRS, and apply the received beam used for QCL-Type D SSB reception to the reception of the NZP CSI-RS.

[0133] The UE receives activation commands used to map up to eight TCI states to codepoints in the DCI field "Transmission Configuration Indication".

[0134]

[0135] UL BM determines whether beam reciprocity (or beam correspondence) between the Tx beam and Rx beam can be established or not, depending on the implementation of the terminal. If beam reciprocity between the Tx beam and Rx beam can be established at both the base station and the terminal, the UL beam pair can be aligned via the DL beam pair. However, if beam reciprocity between the Tx beam and Rx beam cannot be established at either the base station or the terminal, a separate process for determining the UL beam pair is required, distinct from the determination of the DL beam pair.

[0136] Furthermore, even if both the base station and the terminal maintain beam association, the base station can use the UL BM procedure to determine the DL Tx beam without requiring the terminal to report its preferred beam.

[0137] UL BM can be executed via beamformed UL SRS transmission, and the applicability of UL BM to an SRS resource set is set by the (higher layer parameter) usage. When usage is set to "BeamManagement (BM)", only one SRS resource can be sent to each of multiple SRS resource sets in a given time instant.

[0138] A terminal can be configured with one or more Sounding Reference Symbol (SRS) resource sets (via upper-layer signaling, RRC signaling, etc.) as defined by the (upper-layer parameter) SRS-ResourceSet. For each SRS resource set, the UE can be configured with K≧1 SRS resources (upper-layer parameter SRS-resource), where K is a natural number, and the maximum value of K is indicated by SRS_capability.

[0139] Similar to DL BM, the UL BM procedure can also be divided into terminal Tx beam sweeping and base station Rx beam sweeping.

[0140] Figure 10 shows an example of an UL BM procedure using SRS. Specifically, Figure 10a shows the Rx beam determination procedure for the base station, and Figure 10b shows the Tx beam determination procedure for the terminal.

[0141] Figure 11 is a flowchart of an example of an UL BM procedure using SRS.

[0142] The terminal receives RRC signaling (e.g., SRS-Config IE) from the base station, which includes usage parameters (upper layer parameters) set to "Beam Management" (S1110).

[0143] Table 3 shows an example of an SRS-Config IE (Information Element), which is used for SRS forwarding configuration. The SRS-Config IE includes a list of SRS-Resources and a list of SRS-ResourceSets. Each SRS resource set represents a set of SRS-resources.

[0144] The network triggers the transfer of SRS resource sets using the configured aperiodicSRS-ResourceTrigger (L1 DCI).

[0145] [Table 3] JPEG2026516482000005.jpg67163

[0146] Table 3 shows that "usage" is a higher-level parameter that indicates whether an SRS resource set is used for beam management or for codebook-based or non-codebook-based transfers. The usage parameter corresponds to the L1 parameter "SRS-SetUse". "spatialRelationInfo" is a parameter that indicates the setting of the spatial relation between the reference RS and the target SRS. Here, the reference RS can be an SSB, CSI-RS, or SRS corresponding to the L1 parameter "SRS-SpatialRelationInfo". The usage is set per SRS resource set. The terminal determines the Tx beam for the SRS resource to be transferred based on the SRS-SpatialRelationInfo included in the SRS-Config IE (S1120). Here, the SRS-SpatialRelationInfo is set per SRS resource and indicates whether the same beam used for SSB, CSI-RS, or SRS is applied for each SRS resource. Furthermore, each SRS resource may or may not have SRS-SpatialRelationInfo set. If SRS-SpatialRelationInfo is set for an SRS resource, the same beam used for SSB, CSI-RS, or SRS is applied for transmission. However, if SRS-SpatialRelationInfo is not set for an SRS resource, the terminal arbitrarily determines the Tx beam and transmits SRS through the determined Tx beam (S1130).

[0147] More specifically, regarding P-SRS where "SRS-ResourceConfigType" is set to "Periodic"

[0148] i) If SRS-SpatialRelationInfo is set to "SSB / PBCH", the UE applies the same spatial domain transfer filter (or one generated from the same filter) as the spatial domain Rx filter used for receiving SSB / PBCH, and transfers the corresponding SRS resource. Or,

[0149] ii) If SRS-SpatialRelationInfo is set to "CSI-RS", the UE will forward SRS resources that have the same spatial domain forwarding filter used for receiving periodic CSI-RS or SP CSI-RS. Or,

[0150] iii) If SRS-SpatialRelationInfo is set to "SRS", the UE applies the same spatial domain transfer filter used for periodic SRS transfers and transfers the corresponding SRS resource.

[0151] The same applies when "SRS-ResourceConfigType" is set to "SP-SRS" or "AP-SRS".

[0152] Furthermore, the terminal may receive or not receive feedback from the base station to the SRS in the following three cases (S1140):

[0153] i) If Spatial_Relation_Info is set for all SRS resources in the SRS resource set, the terminal will transmit SRS on the beam indicated by the base station. For example, if all Spatial_Relation_Info indicate the same SSB, CRI, or SRI, the terminal will repeatedly transmit SRS on the same beam. In this case, the base station selects the Rx beam, corresponding to Figure Ga.

[0154] ii) Spatial_Relation_Info may not be set for all SRS resources within an SRS resource set. In this case, the terminal can freely change the SRS beam while transmitting. That is, in this case, the terminal selects the Tx beam, which corresponds to Figure Gb.

[0155] iii) Spatial_Relation_Info can be set for only some of the SRS resources within the SRS resource set. In this case, for the SRS resources for which Spatial_Relation_Info is set, the SRS will be forwarded with the designated beam, and for SRS resources for which Spatial_Relation_Info is not set, the terminal can arbitrarily apply a Tx beam for forwarding.

[0156] NES (Network Energy Saving)

[0157] Energy conservation at base stations is considered important in wireless communication systems, including 3GPP, because it can contribute to building environmentally friendly networks and reducing the operational expenditure (OPEX) of telecommunications operators by reducing carbon emissions. In particular, with the introduction of 5G communication, high transmission rates are required, so base stations must be equipped with more antennas and provide services over wider bandwidths and frequency bands. As a result, energy costs for base stations have reached 20% of the total OPEX, according to recent research. Therefore, 5G systems adopt various technologies to reduce energy consumption under the name of NES (network energy savings), and the standardization of related technologies is expected to continue. Specifically, the recently held Rel-18 meeting discussed the following techniques.

[0158] [Table 4]

[0159] The application of NES technology allows a base station to perform operations such as adjusting on / off states over a fixed time interval (duration) on the time axis, adjusting transmit / receive resources for UE-common or UE-specific signals / channels, changing the amount of frequency-axis resources, adjusting transmit power, or turning on / off antenna ports, TRPs (transmission-reception points), etc., in the spatial domain. Figure 12 shows an example of the operating procedure of a base station supporting NES technology. Referring to Figure 12, the base station identifies the NES solution(s) to be applied. The NES solution(s) are associated with signal transmission / reception control (e.g., on / off), beam operation, handover procedures, channel measurement, and reporting. Which NES solution(s) to apply can be adaptively selected or predefined depending on the current situation (e.g., cell load level, characteristics of connected terminals, etc.). Once the base station has identified the NES solution(s), it performs signaling for NES. The specific signaling procedure can vary depending on the verified NES solution(s). For example, a base station can transmit common information to the NES solution(s), or configuration information necessary for NES operation to at least one terminal, or control information for the progress of NES operation to at least one terminal. The base station can also receive capability information related to NES from at least one terminal. Thereafter, the base station performs operations for NES. At this time, the base station can perform operations for NES based on the previously performed signaling. That is, based on the system information, configuration information, and control information transmitted via signaling, the base station can turn on / off the transmission and reception of specific signals, or turn on / off elements of a spatial domain, or adjust resources for the transmission and reception of measurement signals. NES technology can be implemented through a procedure as shown in Figure 12. An example of an NES solution that can be implemented through a procedure as shown in Figure 12 is as follows.

[0160] • Intra-system energy-saving solution: A RAN node can request an adjacent RAN node to switch at least one SSB beam into its deactivated cell, or it can perform paging using a beamset restricted to an inactive terminal (e.g., a stationary terminal).

[0161] • Inter-system energy-saving solution: An NG-RAN node that owns a capacity booster cell can autonomously switch the cell to an inactive state.

[0162] • SSB-less SCell solution: If an SSB or SMTC (SSB-based RRM measurement timing configuration) setting for the SCell is not provided, the terminal can obtain timing references and AGC sources from other serving cells. In FR1 or FR2, the base station can configure an intra-band CA or inter-band CA that includes an SSB-less SCell, in which case the SSB / SIB transmission can be induced by the terminal's WUS (wake-up signal). This increases the period of the common channel / signal, similar to SSB, so the base station remains in a sleep state for an even longer time.

[0163] • Cell DTX / DRX Solution: To reduce the downlink transmit / uplink receive activity time of a base station, a periodic cell DTX / DRX pattern (e.g., active and inactive periods) can be set commonly for terminals in a cell having the relevant feature. Here, the cell DTX pattern and the cell DRX pattern can be set and activated separately, and up to two cell DTX / DRX patterns can be set per MAC entity. When cell DTX is set and activated, at least one of monitoring for SPS opportunities or monitoring for PDCCH can be interrupted during the cell DTX inactive period. When cell DRX is set and activated, at least one of transmissions on CG resources or SR transmissions can be interrupted during the cell DRX inactive period. Cell DTX / DRX can be activated / deactivated via RRC signaling or L1 group common signaling.

[0164] Parameters such as active duration and cycle can be set for cell DTX / DRX. Active duration is the period during which a terminal waits to receive a PDCCH or SPS opportunity and transmit an SR or CG, and cycle specifies the periodic repetition of active and inactive periods. If both cell DTX and cell DRX are set, parameters such as active duration and cycle are common to both. If the base station recognizes an emergency call or public safety-related service (e.g., MPS or MCS), the network can deactivate or disable the cell DTX / DRX settings to avoid affecting the relevant service. Additionally, at least some overlap is required between the active duration of the terminal's connected mode DRX and the active duration of the cell DTX / DRX. For example, the terminal's connected mode DRX cycle must be a multiple of the cell DTX / DRX cycle, or vice versa.

[0165] • Conditional handover (CHO) solution: A CHO procedure is used while NES technology is applied (e.g., when a cell activates or deactivates cell DTX / DRX), in which the terminal determines whether to execute the handover. In this case, the terminal can use an NES-specific CHO event to execute the CHO on a candidate cell, and the reception of a DCI can be applied as an additional triggering condition for this, which activates the CHO conditions set in the NES event indication.

[0166] • Spatial and power domain adaptation solution: To support gNB for transceiver muting and / or transmit power adaptation, the terminal can be configured to report multiple CSI entries in the CSI report based on multiple sub-configurations. Each sub-configuration corresponds to a spatial domain adaptation pattern (e.g., a subset of available spatial elements) and / or a data channel (e.g., PDSCH) and a power offset between CSI-RS. The application of the spatial and power domain adaptation solution can affect CSI configuration, measurement, and / or reporting behavior.

[0167] CSI measurement and reporting

[0168] Figure 13 shows an example of the procedure for CSI measurement and reporting.

[0169] Referring to Figure 13, the base station transmits configuration information for CSI to the terminal. The configuration information for CSI may include information related to CSI-RS resources or resource sets (e.g., time-frequency resource information, sequence information, power information, etc.), information related to CSI reporting (e.g., reporting item (quantity) information, reporting type information, reporting resource information, codebook information, etc.), and information related to CSI measurement. Here, to assist the base station in transceiver muting and / or transmit power adaptation, the terminal can be configured to report multiple CSI entries in the CSI report based on multiple sub-configurations, where each sub-configuration corresponds to a spatial domain adaptation pattern (e.g., a subset of available spatial elements) and / or a power offset. Furthermore, in relation to CSI reporting, higher-level parameters included in the configuration information (e.g., CSI-ReportConfig) may include a catalog of subconfigurations, each subconfiguration being identified by an identifier (e.g., csi-ReportSubConfigID) and corresponding to a catalog of at least one CSI-RS resource, or a subset of CSI-RS antenna ports, and / or, in addition to power control offset-related parameters (e.g., powerControlOffset) for the CSI-RS resource(s), power offsets for PDSCHs associated with CSI-RS.

[0170] In this case, the settings related to CSI can include multiple sub-settings. This allows the terminal to consider the sub-settings when analyzing the configuration information for CSI to determine CSI-RS resources, CSI-RS port mapping, power offset, codebook type, reporting items, etc. If the terminal is configured with configuration information related to CSI reporting that includes sub-settings (e.g., CSI-ReportConfig), the terminal does not expect the higher-level parameters related to the reporting items (e.g., reportQuantity) to be set to "cri-RSRP", "cri-SINR", "cri-SINR-Index", "cri-RSRP-Index", "none", "ssb-Index-RSRP", "ssb-Index-SINR", "ssb-Index-RSRP-Index", "ssb-Index-SINR-Index", or "tdcp". Also, if the type of CSI reporting is set to semi-persistent CSI reporting or aperiodic CSI reporting, the base station can activate / trigger only some of the sub-settings configured on the terminal via MAC-CE or DCI. In other words, the trigger state for aperiodic CSI reporting can be set as needed, and the activation of semi-static CSI reporting can be controlled by an activation command.

[0171] For example, in relation to the settings for a reporting item, the terminal can determine the CSI-RS port index(s) for each CSI-RS resource based on information related to the sub-setting port-subset (hereinafter referred to as the "port-subset indicator"). The port-subset indicator may include a bitmap for identifying some of the antenna ports for the CSI-RS resource in question. Therefore, the terminal can identify at least one antenna port for the relevant sub-setting based on the position of the bit set to a positive value (e.g., 1) in the port-subset indicator.

[0172] For example, in relation to settings for reporting items, the terminal can determine the codebook type based on the existence of sub-settings. Specifically, if sub-settings are configured for a CSI report, the terminal can exclude settings for at least one codebook type. However, depending on the terminal's capabilities, it may be possible for at least one such codebook type to be configured.

[0173] For example, in relation to the settings for reporting items, power offset values ​​and NZP CSI-RS resource sets can be set for each sub-setting. In this case, the analysis of the NZP CSI-RS resource set for each sub-setting can change depending on whether or not the power offset value and NZP CSI-RS resource set can be set for each sub-setting.

[0174] In determining the CQI, higher-level parameters related to time limits for channel measurements (e.g., timeRestrictionForChannelMeasurements) can be set. In this case, the terminal should derive a channel estimate for determining the CSI based on the latest CSI reference resource. At this time, if the cell DTX to the base station is activated, the cell DTX activation time can be taken into consideration.

[0175] The CSI is derived based on the CSI reference resource. The CSI reference resource is defined as a group of downlink physical resource blocks corresponding to the bandwidth associated with the CSI derived in the frequency domain, and is defined in a single downlink slot determined in the time domain based on higher-level parameters and subcarrier intervals. After receiving the CSI-RS, the terminal should send a CSI report without delay from the CSI reference resource. If sub-configurations are set for the CSI report, the CSI reference resource is considered separately for each sub-configuration.

[0176] If configured to report at least one of the CQI index, PMI, or RI, the terminal can make specific assumptions about the CSI reference resource, such as the symbol positions and number occupied by control signaling, the number of PDSCH and DMRS symbols, the subcarrier interval of the BWP, the bandwidth for CQI reporting, the CP length and subcarrier interval of the reference resource, and the RV (redundancy version), for the purpose of deriving at least one of the CQI index, PMI, or RI. In this case, if sub-configurations are set for CSI reporting, assumptions about the antenna port, EPRE, etc., can be determined based on the sub-configurations.

[0177] Next, the base station transmits at least one CSI-RS. This allows the terminal to receive at least one CSI-RS and perform the measurement. At least one CSI-RS can be transmitted via a CSI-RS resource or resource set configured by the configuration information.

[0178] In this case, if the terminal is set to DRX, the terminal can perform measurements as follows: For example, if the terminal is set to monitor power saving-related control information (e.g., DCI format 2_6) and the DRX-related timer (e.g., drx-onDurationTimer) is not started by a higher-level parameter (e.g., ps-TransmitOtherPeriodicCSI), and the terminal is set to report CSI using the reporting configuration type set by periodic reporting and reporting items set to items other than cri-RSRP and ssb-index-RSRP, then the latest CSI measurement opportunity will occur during the time indicated by drx-onDurationTimer in the DRX-related configuration information (e.g., DRX-Config), other than the DRX activation time or the DRX activation time for the reported CSI. As another example, if a terminal is configured to monitor power saving-related control information (e.g., DCI format 2_6), and a higher-level parameter (e.g., ps-TransmitPeriodicL1-RSRP) prevents drx-onDurationTimer from starting, and the terminal is configured to report L1-RSRP using the reporting configuration type set by periodic reporting and the reporting items set in cri-RSRP, then the latest CSI measurement opportunity will occur during the time indicated by drx-onDurationTimer in the DRX-related configuration information (e.g., DRX-Config), other than the DRX activation time or the DRX activation time for the reported CSI. In addition, the latest CSI measurement opportunity will occur within the DRX activation time for the reported CSI.

[0179] On the other hand, a base station can perform cell DTX / DRX operation. In this case, during the deactivation period of cell DTX, terminals configured for cell DTX do not expect to receive periodic CSI-RS and semi-static CSI-RS as configured by the CSI reporting settings associated with reporting items that include at least RI (rank indicator). When cell DTX is activated for a serving cell, the latest CSI measurement opportunities for semi-static CSI-RS resources or periodic CSI-RS resources occur within the activation period of cell DTX for CSI reporting, as configured by the configuration information associated with CSI reporting (e.g., CSI-ReportConfig) associated with reporting items that include at least RI.

[0180] A terminal that receives at least one CSI-RS determines the CSI. That is, the terminal performs the CSI calculation. At this time, the terminal can perform the CSI calculation based on the CSI processing criteria. The terminal can specify the number of concurrently supported CSI calculations, i.e., the number of CSI processing units (CPUs) that can proceed simultaneously, NCPU. The terminal can determine the number of CPUs for a given CSI report based on at least one of the following: NCPU, the number of CPUs for each CSI report, the number of CPUs currently occupied, or the settings of the report item. For example, for configuration information associated with a CSI report (e.g., CSI-ReportConfig) that includes a report item parameter (e.g., reportQuantity) that is not set to "none", the CPUs can be occupied between at least one OFDM symbol, where the number of at least one symbol can be determined based on the CSI-RS resources or CSI-IM resources associated with the sub-configuration.

[0181] If configuration information related to CSI reporting (e.g., CSI-ReportConfig) includes multiple sub-configurations, the number of CPUs occupied by the CSI reporting is determined based on the number of CSI-RS resources corresponding to the sub-configurations. In this case, the number of CSI-RS resources can be determined based on the number of times the configuration information related to CSI reporting (e.g., CSI-ReportConfig) is referred to, or the number of sub-configurations that refer to the relevant CSI-RS resource.

[0182] A terminal that has determined a CSI sends a CSI report to the base station. The terminal can send a CSI for at least one sub-configuration based on the report item parameter (e.g., reportQuantity) set for the configuration information (e.g., CSI-ReportConfig) associated with the CSI report. For example, a CSI report may include at least one of PMI, CQI, RI, CRI, SSBRI, LI, or RSRP. In this case, the CSI report may include a Part 1 CSI report and a Part 2 CSI report. Furthermore, the CSI report may be sent via at least one of PUCCH or PUSCH.

[0183] When a terminal multiplexes a CSI report containing a Part 2 CSI report to a PUCCH resource, the terminal determines the number of PUCCH resources and PRBs for the PUCCH resources or the number of Part 2 CSI reports, assuming that each CSI report or each CSI sub-report contained within a CSI report indicates rank 1 or rank combination {1, 1}. If a higher-level parameter related to the CSI reporting mode (e.g., csi-ReportMode) is set to "Mode2", the terminal determines the number of PUCCH resources and PRBs for the PUCCH resources or the number of Part 2 CSI reports, assuming that each CRI in the CSI report is associated with a resource pair.

[0184] If a CSI report in PUSCH contains two parts, the terminal may omit part of the Part 2 CSI. The omission of Part 2 CSI follows priority order. Unless the corresponding CSI report contains at least one CSI sub-report including Part 2 that corresponds to a sub-configuration from a catalog of sub-configurations provided by a higher-level parameter (e.g., csi-ReportSubConfigList) included in the information related to the CSI report (e.g., CSI-ReportConfig), the terminal should omit all information at that priority level when omitting Part 2 CSI information for a particular priority level.

[0185] For information related to a CSI report, including a catalog of sub-configurations (e.g., CSI-ReportConfig), and associated reporting configurations, the following processing is possible: For a corresponding CSI report containing at least one CSI sub-report, Part 2 CSI omission is performed at the sub-configuration level within the same priority level. Here, sub-configurations with lower index values ​​have higher priority.

[0186] If any CSI report consists of two parts, the terminal may omit a portion of Part 2 CSI. The omission of Part 2 CSI follows a priority order. For a given CSI report that includes at least one CSI sub-report for information related to the CSI report, including a catalog of sub-configurations (e.g., CSI-ReportConfig), and associated reporting settings, the omission of Part 2 CSI is defined in Section 5.2.3. Part 2 CSI is omitted starting from the lowest priority level down to a Part 2 CSI coding rate that is less than or equal to the coding rate set by the higher-level parameter (e.g., maxCodeRate).

[0187] Furthermore, when a CQI request field within a DCI triggers a CSI report(s) in a PUSCH, the first uplink symbol carrying the CSI report(s) will not precede any symbols identified after a certain interval from the last symbol of the PDCCH that carried the DCI. This can be understood as ensuring the CSI calculation time. In this case, if multiple sub-settings are configured for the CSI report, the start position of the aforementioned interval can be determined based on all triggered sub-settings.

[0188] Specific Examples of the Disclosure

[0189] This disclosure relates to a technique for reporting CSIs based on sub-configurations in a wireless communication system. In particular, this disclosure relates to a technique for controlling and / or signaling the state of multiple sub-configurations (e.g., activation and / or deactivation), and proposes various embodiments for transmitting CSIs for sub-configurations. Hereinafter in this disclosure, " / " means "and," "or," or "and / or" depending on the context.

[0190] A base station can operate technologies for the purpose of NES, such as adjusting the on / off state of UEs over a certain period of time, adjusting transmit / receive resources for UE-common or UE-specific signals / channels, changing the amount of resources on the frequency axis, adjusting transmit power, or turning on / off antenna ports (APs), TRPs, etc., in the spatial domain. In this disclosure, the listed technologies are referred to as "NES technologies" or "NES_tech," and the state in which at least one of the NES_techs is applied is referred to as "NES mode" or "NES state." For example, an example of state control of antenna elements by NES mode is shown in Figures 14a to 14c below. Referring to Figures 14a to 14c, energy saving is possible by adaptively turning on / off some of the antenna elements among multiple antenna elements connected to multiple TxRUs (transmit radio units). The base station can also inform terminals which NES_tech(etc.) applies to each NES_tech or NES_tech group [Approach 1], and can pre-configure the NES_tech or NES_tech group(etc.) corresponding to a specific code-point of a particular indicator [Approach 2]. Here, the specific indicator can be indicated by DCI or MAC CE, or configured by higher-level signaling.

[0191] In Approach 1, if at least one NES_tech is applied to a terminal, the state can be defined as an NES mode or NES state, and further, depending on which NES_tech is applied, it can be treated as a different NES mode or a different NES state. An NES mode or NES state means whether at least one NES technology is applicable, or can be used as a concept to further indicate which NES technologies are applied. If an NES mode or NES state further indicates which NES technologies are applied, different NES modes or different NES states can include different combinations of NES_tech. In Approach 2, for example, if a 1-bit indicator is used, "0" can indicate that the corresponding NES_tech is not applied, and "1" can indicate that at least one NES_tech is applied. In this case, if "1" is indicated via the indicator, the state can be defined as an NES mode or an NES state. As another example, when a 2-bit directive is used, "00" may indicate that there is no corresponding NES_tech, "01" may indicate that at least one NES_tech_A is applied, "10" may indicate that at least one NES_tech_B is applied, and "11" may indicate that at least one NES_tech_C is applied. In this case, if a code point other than "00" is indicated via the directive, the state can be defined as an NES mode or NES state. Furthermore, the terminal can determine that if "01" is confirmed, it is NES state #1; if "10" is confirmed, it is NES state #2; and if "11" is confirmed, it is NES state #3. This allows for distinction between whether an NES state is present and / or what kind of NES state it is, based on the code point.

[0192] For NES purposes, a base station can turn on / off any spatial elements (e.g., APs, active transmit / receive chains, panels, or TRPs) or adjust the power values ​​for downlink signals / channels. To dynamically apply such diverse NES techniques in the spatial and power domains, a base station can link CSI-RS resources or resource sets with different APs to a single CSI report setting (e.g., CSI-ReportConfig), or link multiple power offsets (e.g., the powerControlOffset parameter, which is the power offset value between PDSCH and CSI-RS, the powerControlOffsetSS parameter, which is the power offset value between SSS and CSI-RS, etc.).

[0193] A single CSI reporting configuration (e.g., CSI-ReportConfig) can include multiple subconfigurations based on different numbers of antenna ports or different power offset values. Specifically, a single CSI reporting configuration can be linked to CSI-RS resources or sets of CSI-RS resources, each having a different number of APs, and multiple power offsets can be linked. Here, the power offset includes the powerControlOffset parameter, which is the power offset value between the PDSCH and CSI-RS, or the powerControlOffsetSS parameter, which is the power offset value between the SSS and CSI-RS. In this case, at least one of the following CSI frameworks can be introduced.

[0194] -Framework #1: Multiple CSI-RS resource sets are linked to a single CMR (channel measurement resource) or an IMR (interference measurement resource) within CSI-ReportConfig. Here, the CMR can be configured using the resourcesForChannelMeasurement parameter, and the IMR can be configured using the csi-IM-ResourcesForInterference or nzp-CSI-RS-ResourcesForInterference parameter. For example, resource set #1 and resource set #2 may be linked to a CMR, with CSI-RS resources belonging to resource set #1 consisting of 16 APs (antenna ports, APs) and CSI-RS resources belonging to resource set #2 consisting of 8 APs.

[0195] -Framework #2: When a linked CSI-RS resource set is configured for one CMR or one IMR within CSI-ReportConfig, at least one CSI-RS resource(s) with different attributes such as the number of APs and / or power offset within that CSI-RS resource set will be configured. For example, for CSI-RS resource set #1 configured for a CMR, CSI-RS resource #1 belonging to CSI-RS resource set #1 may be set to 16 APs, and CSI-RS resource #2 belonging to the same set may be set to 8 APs. For example, for CSI-RS resource set #1 configured for a CMR, CSI-RS resource #1 belonging to CSI-RS resource set #1 may be set to power offset #1, and CSI-RS resource #2 belonging to the same set may be set to power offset #2.

[0196] -Framework #3: If a single CSI-RS resource set linked to a single CMR or IMR is configured within CSI-ReportConfig, some or all of the CSI-RS resources within that set can be configured to multiple AP counts and / or power offset values. For example, for CSI-RS resource set #1 configured for a CMR, CSI-RS resource #1 belonging to CSI-RS resource set #1 can be configured to a maximum of 16 APs, and CSI reporting can be configured to utilize at least one of these APs. Alternatively, CSI-RS resource #2 belonging to the same CSI-RS resource set #1 can be configured to multiple power offset values, and CSI reporting can be configured to utilize all or some of the power offsets.

[0197] The CSI reporting method can be defined for the aforementioned CSI framework through at least one of the following options.

[0198] -Option #1: A single CSI report can include all CSIs that take into account multiple AP values ​​and / or multiple power offset values ​​set in a single CSI report. Alternatively, a single CSI report can include a CSI that takes into account multiple AP values ​​and / or multiple power offset values ​​determined via the base station settings / instructions. In this case, the AP values ​​and / or power offset values ​​set / instructed via the base station are only a portion of the AP values ​​and / or power offset values ​​set in the relevant CSI report.

[0199] -Option #2: Even if multiple AP values ​​and / or multiple power offset values ​​are set in a single CSI report, a CSI(et) that considers a single AP value and / or a single power offset value can be included in a single CSI report via the base station settings / instructions.

[0200] -Option #3: Even if multiple AP values ​​and / or multiple power offset values ​​are set in a single CSI report, a CSI(etc.) that takes into account some AP values ​​and / or some power offset values ​​through terminal judgment / decision / selection based on criteria set or defined by the base station may be included in a single CSI report.

[0201] A configuration for CSI reporting (e.g., CSI-ReportConfig) can contain more than 1, L sub-configurations, each of which can correspond to either a spatial domain adaptation pattern or a power domain adaptation pattern.

[0202] Here, the spatial domain adaptation pattern can correspond to a specific number of APs or AP on / off pattern, or to a specific CSI-RS power value (e.g., the CSI-RS power value determined by the powerControlOffsetSS parameter, which is the power offset value between SSS and CSI-RS, because if some antenna elements corresponding to one AP are turned off, it can affect the CSI-RS power value). For example, when applying framework #2, the A1 number of APs or P1 power value can be set for CSI-RS index #n1 belonging to the resource set, and the A2 number of APs or P2 power value can be set for CSI-RS index #n2 belonging to the same resource set. In this case, the sub-configuration index #s1 is linked to CSI-RS index #n1, and the sub-configuration index #s2 is linked to CSI-RS index #n2, so that the spatial domain adaptation pattern can be set differently for each sub-configuration. When applying the framework #3 method, the CSI-RS index #n1 belonging to the resource set is configured such that when the number of A1 APs (or P1 / P2 power values) is set, the sub-configuration index #s1 is linked to the number of A1 APs (or P1 power values), and the sub-configuration index #s2 is linked to a number of A2 APs (or P2 power values) that is less than the number of A1 APs that make up CSI-RS index #n1. This allows for different spatial domain adaptation patterns to be set for each sub-configuration.

[0203] Furthermore, a power domain adaptation pattern can mean that the power offset value (e.g., the powerControlOffset parameter, which is the power offset value between PDSCH and CSI-RS, and the powerControlOffsetSS parameter, which is the power offset value between SSS and CSI-RS, etc., which determine the power offset value) is varied. For example, when applying framework #2, a P1 power value can be set for CSI-RS index #n1 belonging to the resource set, and a P2 power value can be set for CSI-RS index #n2 belonging to the same resource set. In this case, by setting sub-configuration index #s1 to be linked to CSI-RS index #n1 and sub-configuration index #s2 to be linked to CSI-RS index #n2, the power domain adaptation pattern can be set to be different for each sub-configuration.

[0204] Furthermore, when applying Framework #3, P1 power values ​​and P2 power values ​​can be set for CSI-RS index #n1 belonging to the resource set. In this case, by setting it so that the P1 power value is linked to sub-configuration index #s1 and the P2 power value is linked to sub-configuration index #s2, it is possible to set different power domain adaptation patterns for each sub-configuration.

[0205] By utilizing one of the aforementioned options #1 / 2 / 3, the terminal can feed back to the base station a CSI report that includes CSIs (etc.) corresponding to N sub-settings (etc.) that are between 1 and L out of L sub-settings.

[0206] This disclosure aims to propose a technique for specifying N sub-settings (rar) out of L sub-settings.

[0207] [Example #1] A method for activating / deactivating (on PUCCH) SP (semi-persistent)-CSI reporting via MAC-CE, and for instructing N sub-configurations via the MAC-CE.

[0208] Table 5 below shows excerpts related to SP-CSI reporting from the standard document TS 38.214.

[0209] [Table 5] JPEG2026516482000008.jpg101168

[0210] Table 6 below shows the MAC CE related to activating / deactivating SP-CSI, as extracted from the standard document TS 38.321.

[0211] [Table 6]

[0212] As shown in Tables 5 and 6 above, SP-CSI reporting on PUCCH can be activated or deactivated via MAC CE, and the corresponding MAC CE can be defined as shown in Table 5.

[0213] However, currently, only the index of configuration information for CSI reporting (e.g., CSI-ReportConfig) can be signaled via MAC CE, thus supporting signaling for activation or deactivation of individual CSI reporting configurations. Since L subconfigurations can be configured within a single CSI reporting configuration, it is required to trigger / instruct / activate SP-CSI reporting on PUCCH for N of these subconfigurations. To this end, it is necessary to enhance the MAC CE in question or design new MAC CE signaling, and this disclosure aims to propose a MAC CE signaling technique for this purpose.

[0214] Figure 15 illustrates an example of a procedure for instructing the activation of sub-configurations of CSI reporting settings according to one embodiment of the present disclosure. Figure 15 illustrates how this is performed by a base station.

[0215] Referring to Figure 15, in step S1501, the base station transmits configuration information for at least one CSI reporting setting. The configuration information may include information related to the CSI-RS resource or resource set associated with the CSI report, the number of APs, the power offset, the type of CSI report, etc. The configuration information may also include multiple sub-settings, and each sub-setting may be associated with at least one of the following: a different number of APs, an AP subset, or a power offset value. That is, the configuration information is information for setting a sub-setting and may include at least one of the following: information indicating an AP subset (e.g., a bitmap), information indicating at least one CSI-RS resource (e.g., a list of CSI-RS resource IDs), or information indicating a power offset value (e.g., an offset value). Here, the configuration information may be transmitted to set up multiple CSI reporting settings.

[0216] In step S1503, the base station determines whether to activate each sub-configuration included in the CSI reporting configuration. That is, the sub-configurations included in the CSI reporting configuration can be individually activated or deactivated. The base station can determine whether to activate each sub-configuration based on various factors. For example, the base station can decide to activate and / or deactivate some sub-configurations based on the number of APs (antenna ports) that are on. As a specific example, if some of the base station's APs are turned off, the base station cannot transmit CSI-RS using all of the APs, so the sub-configurations associated with all of the APs are deactivated, and the sub-configurations associated with a number of APs less than or equal to the number of APs that are on are activated.

[0217] In step S1505, the base station transmits information related to sub-configuration activation. In other words, the base station transmits a message containing information related to sub-configuration activation and / or deactivation (hereinafter referred to as "sub-configuration activation information"). In various embodiments, sub-configuration activation information can be transmitted via DCI, MAC CE, or RRC messages. In one embodiment, sub-configuration activation information may be in the form of a bitmap. Specifically, sub-configuration activation information may include bitmaps for sub-configurations of multiple CSI reporting settings. If multiple CSI reporting settings are configured, sub-configuration activation information may include CSI reporting setting-specific bitmaps (e.g., a first bitmap for the first CSI reporting setting, a second bitmap for the second CSI reporting setting, etc.), where each bitmap may contain one bit per sub-configuration (e.g., a first bit for the first sub-configuration, a second bit for the second sub-configuration). In one embodiment, sub-configuration activation information may be defined in a format that is added to a PUCCH activation / deactivation MAC CE indicating whether to activate or deactivate each CSI reporting setting. In this case, a message containing sub-configuration activation information may further include information indicating that it contains sub-configuration activation information (e.g., the eLCID (extended logical channel identifier) ​​of a MAC subheader set to a specific value).

[0218] In step S1507, the base station receives a CSI report based on at least one activated sub-configuration. In other words, the base station receives a CSI report containing CSI(et al.) based on the sub-configuration. Here, the CSI report may contain CSI(et al.) for each sub-configuration. In other words, the base station receives CSI(et al.) for each sub-configuration from the terminal. At this time, the CSI(et al.) included in the CSI report corresponds to at least one sub-configuration that was instructed to be activated in step S1505.

[0219] Figure 16 illustrates an example of a procedure for verifying the activation of sub-settings of CSI reporting settings according to one embodiment of the present disclosure. Figure 16 illustrates how this is performed by a terminal.

[0220] Referring to Figure 16, in step S1601, the terminal receives configuration information for at least one CSI reporting setting. The configuration information may include information related to CSI-RS resources or resource sets associated with CSI reporting, the number of APs, power offset, and the type of CSI reporting. The configuration information may also include multiple sub-settings, each sub-setting may be associated with at least one of the following: a different number of APs, an AP subset, or a power offset value. That is, the configuration information is for setting a sub-setting and may include at least one of the following: information indicating an AP subset (e.g., a bitmap), information indicating at least one CSI-RS resource (e.g., a list of CSI-RS resource IDs), or information indicating a power offset value (e.g., an offset value). Here, the configuration information may be received to set up multiple CSI reporting settings.

[0221] In step S1603, the terminal receives information related to sub-configuration activation. In other words, the terminal receives a message containing information related to sub-configuration activation and / or deactivation (hereinafter referred to as "sub-configuration activation information"). In various embodiments, sub-configuration activation information can be received via DCI, MAC CE, or RRC messages. In one embodiment, sub-configuration activation information may be in the form of a bitmap. Specifically, sub-configuration activation information may include bitmaps for sub-configurations of multiple CSI reporting settings. If multiple CSI reporting settings are configured, sub-configuration activation information may include CSI reporting setting-specific bitmaps (e.g., a first bitmap for the first CSI reporting setting, a second bitmap for the second CSI reporting setting, etc.), where each bitmap may contain one bit per sub-configuration (e.g., a first bit for the first sub-configuration, a second bit for the second sub-configuration). In one embodiment, sub-configuration activation information may be defined in a format that is added to a PUCCH activation / deactivation MAC CE indicating whether to activate or deactivate each CSI reporting setting. In this case, the message containing sub-configuration activation information may further include information indicating that it contains sub-configuration activation information (e.g., the eLCID of the MAC subheader set to a specific value).

[0222] In step S1605, the terminal generates a CSI(et al.) based on at least one activated sub-configuration. In other words, the terminal generates a CSI(et al.) for at least one sub-configuration, where the CSI may include at least one of CRI, RI, and CQI. For this purpose, the terminal can perform a measurement on the CSI-RS. That is, although not shown in Figure 16, after receiving at least one CSI-RS, the terminal can generate a CSI(et al.) for each of the at least one sub-configuration based on the measurement results on the CSI-RS.

[0223] In step S1607, the terminal sends a CSI report that includes CSI(et al.). In other words, the terminal sends a CSI report that includes CSI(et al.) for sub-configurations. Here, the CSI report may include CSI(et al.) for each sub-configuration. In this case, the CSI(et al.) included in the CSI report corresponds to at least one sub-configuration that was instructed to be activated in step S1603.

[0224] As illustrated with reference to Figures 15 and 16, base stations and terminals can perform signaling for the activation of sub-configurations of CSI reporting settings. The forms of signaling for the activation and / or deactivation of sub-configurations can be defined in various ways. Hereinafter, this disclosure describes various embodiments of signaling for the activation and / or deactivation of sub-configurations. In the following description, a bitmap is a set of bits set to values ​​that represent the respective states of the indicated object, and generally, bits and objects can be defined to have a one-to-one relationship. Each bit constituting a bitmap is called a “field,” and thus a bitmap can be called a set of fields, a set of bits.

[0225] [Example #1-1] Activation can be instructed for N sub-settings in an index of a CSI report-related setting (e.g., CSI-ReportConfig) which has two or more sub-settings, L sub-settings that are activated via a single common field consisting of one or more bits (ra).

[0226] In one embodiment, the activated sub-setting index values ​​(and so on) of up to four configured sub-settings can be commonly represented via a 4-bit bitmap, as shown in Figure 17a below. Figure 17a shows a first example of the structure of a MAC CE controlling CSI reporting according to one embodiment of the present disclosure. Referring to Figure 17a, the MAC CE includes two octets, and at least one of the following: a first set of fields 1713a to 1713d that indicates activation of sub-settings including serving cell ID 1711, BWP ID 1712, and {C_3, C_2, C_1, C_0}, and a second set of fields 1714a to 1714d that indicates activation of CSI reporting settings including {S_3, S_2, S_1, S_0}. Sub-setting indices can be mapped in ascending order from C_0, or sub-setting indices can be mapped in ascending order from C_3. For example, if the signaling is "{S_3, S_2, S_1, S_0}=0111", identifiers (e.g., CSI-ReportConfigID) for the CSI reporting settings corresponding to S_2, S_1, and S_0 can be activated. In this disclosure, the activation of a particular CSI-ReportConfigID can be understood as the activation of the CSI report identified by that CSI-ReportConfigID. In this disclosure, the activation of a particular sub-configuration index can be understood as the activation of the sub-configuration of the CSI report identified by that sub-configuration index.

[0227] For example, assuming that L=4, 2, and 1, i.e., 4, 2, and 1 sub-configurations are set for the CSI-ReportConfigIDs corresponding to S_2, S_1, and S_0 respectively, the MAC CE can be analyzed as follows. Here, L=1 can mean that no sub-configurations are set, as in the existing case, or it can mean that they are set, but only one sub-configuration is set. If the sub-configuration indices are mapped in ascending order from C_0 and signaled as "{C_3, C_2, C_1, C_0}=0110", then sub-configuration indices #1 and #2 can be activated for the CSI-ReportConfigID corresponding to S_2. Also, since sub-configuration index #2 is not set for the CSI-ReportConfigID corresponding to S_1, sub-configuration index #1 can be activated. Furthermore, since the CSI-ReportConfigID corresponding to S_0 has the same settings as before, signaling for {C_3, C_2, C_1, C_0} can be ignored, and the corresponding CSI reporting settings can be activated.

[0228] In this disclosure, the activation of a sub-configuration index #n of a specific CSI-ReportConfigID can mean that the terminal calculates the CSI based on the number of APs and / or the CSI-RS power value set in the corresponding sub-configuration index, and feeds back a CSI report containing the calculated CSI to the base station. In this embodiment, the maximum value of L is exemplified as 4, but if the maximum value of L (=M) is defined as a value less than 4, the field can be defined with only M MSBs or LSBs from {C_3, C_2, C_1, C_0}, and this embodiment can be applied.

[0229] In other embodiments, combinations of sub-configuration indices can be commonly indicated using means other than bitmap information. In this case, the first set of fields 1713a to 1713d in Figure 17a can be set to one of several (e.g., K) available code-points that are not bitmaps. Specifically, combinations of sub-configuration indices corresponding to K code-points can be pre-configured or defined, and the sub-configuration indices can be signaled via ceiling{log2(K)} bits. For example, the correspondence can be pre-configured or defined such that sub-configuration index #0 maps to code-point #0, sub-configuration index #1 maps to code-point #1, sub-configuration index #2 maps to code-point #2, sub-configuration index #3 maps to code-point #3, sub-configuration index #0 / 1 maps to code-point #4, sub-configuration index #2 / 3 maps to code-point #5, and sub-configuration index #0 / 1 / 2 / 3 maps to code-point #6. In this case, the sub-configuration index(s) to be activated can be commonly indicated to the CSI-ReportConfigID(s) to be activated via a single field consisting of a total of 3 bits (=ceiling{log2(7)}).

[0230] Figure 17a illustrates that the size of the first field set 1713a to 1713d is 4 bits. However, if only P bits (less than 4) are needed, the field can be composed of only P MSBs (etc.) or LSMs (etc.) from the 4 bits. For example, when signaling is "{S_3, S_2, S_1, S_0}=0111", the CSI-ReportConfigIDs corresponding to S_2, S_1, and S_0 can be activated. Assuming that L=4, 2, and 1, i.e., 4, 2, and 1 sub-configurations (etc.) are set for the CSI-ReportConfigIDs corresponding to S_2, S_1, and S_0, then when code point #6 is signaled through the proposed field, the sub-configuration indices #0 / 1 / 2 / 3 can be activated for the CSI-ReportConfigID corresponding to S_2. Furthermore, since sub-configuration indices #2 / 3 are not set for the CSI-ReportConfigID corresponding to S_1, sub-configuration indices #0 / 1 can be activated. Also, since the CSI-ReportConfigID corresponding to S_0 has the same settings as before, signaling through the proposed fields can be ignored, and the corresponding CSI reporting setting can be activated.

[0231] In other embodiments, sub-configuration IDs(e) that are not bitmaps or code-points may be used. Figure 17b shows a second example of the structure of a MAC CE controlling CSI reporting according to one embodiment of the present disclosure. Referring to Figure 17b, the MAC CE includes two octets and includes a serving cell ID 1721, a BWP ID 1722, a first field 1723 indicating sub-configuration IDs(e), and at least one of a second set of fields 1724a to 1724d indicating activation of CSI reporting configurations including {S_3, S_2, S_1, S_0}. Referring to Figure 17b, if a specific index value is indicated via the first field 1723, i.e., the sub-configuration ID(e) field, all sub-configurations(e) having an index value greater than or equal to that index may be activated. For example, if the signaling is "{S_3, S_2, S_1, S_0}=0111" and a value of 1 is signaled through the proposed field, then sub-configurations(rar) with an index value of 1 or more set in the CSI-ReportConfigID corresponding to S_2, S_1, and S_0 can be activated. Assuming that L=4, 2, and 1, i.e., 4, 2, and 1 sub-configurations(rar) are set for the CSI-ReportConfigID corresponding to S_2, S_1, and S_0 respectively, then the CSI-ReportConfigID corresponding to S_0 has the same setting as the existing one, so the signaling through the proposed field is ignored and the corresponding CSI reporting configuration can be activated. Here, it has been explained that sub-configurations(rar) with an index value greater than or equal to the indicated value are activated, but in other embodiments, sub-configurations(rar) with an index value exceeding, less than, or less than or equal to the indicated value can also be activated.

[0232] In other embodiments, all sub-configurations(rar) can be activated by an index value indicated via the first field 1723, i.e., the sub-configuration ID(rar) field, or a single sub-configuration confirmed by the set index value can be activated. Specifically, if a particular index value (e.g., the largest index value or the smallest index value) is indicated, all sub-configurations(rar) can be activated, and if any other index value is indicated, only the sub-configuration corresponding to the index value can be activated. For example, if "{S_3, S_2, S_1, S_0}=0111" is signaled and a value of 1 is signaled via the proposed field, the sub-configuration with an index value of 1 set in the CSI-ReportConfigID corresponding to S_2, S_1, and S_0 can be activated. As another example, if the signaling is "{S_3, S_2, S_1, S_0}=0111" and a value of 0 is signaled through the proposed field, all sub-configurations set in the CSI-ReportConfigID corresponding to S_2, S_1, and S_0 can be activated. Assuming that L=4, 2, and 1, i.e., 4, 2, and 1 sub-configurations (etc.) are set for the CSI-ReportConfigID corresponding to S_2, S_1, and S_0 respectively, then the CSI-ReportConfigID corresponding to S_0 has the same configuration as before, so the signaling through the proposed field can be ignored and the corresponding CSI reporting configuration can be activated.

[0233] The MAC CE according to this embodiment can be composed of the same number of bits as an existing MAC CE. Therefore, it is necessary to distinguish between the proposed MAC CE and the existing MAC CE. Alt1) The R (reserved) bit that precedes the serving cell ID can be used. For example, if the value of the bit is a first value (e.g., 0 or 1), the MAC CE is an existing MAC CE, whereas if the value of the bit is a second value (e.g., 1 or 0), the MAC CE is a proposed MAC CE. Alt2) If the serving cell and BWP indicated by the MAC CE operate in NES mode (e.g., if L sub-settings greater than 1 are set for at least one CSI reporting setting), the MAC CE may have the structure of a proposed MAC CE. Conversely, if the serving cell and BWP indicated by the MAC CE do not operate in NES mode, the MAC CE may have the structure of an existing MAC CE. Alt3) A new MAC CE different from the existing one can be defined. In other words, it can be signaled that a MAC CE has the proposed new structure via MAC subheader information (e.g., LCID or eLCID). That is, the base station can set the LCID or eLCID in the MAC subheader as the value corresponding to the proposed new structure of the MAC CE.

[0234] In the aforementioned embodiment, if multiple CSI reporting settings are activated by signaling only one of the N sub-setting indexes, it is not permissible to provide individual information for each CSI reporting setting, and only common information can be provided. One solution to this is to impose a constraint that the number of CSI-ReportConfigIDs activated via MAC CE is a maximum of 1. Alternatively, for a CSI reporting setting containing L sub-settings greater than 1, the number of CSI-ReportConfigIDs activated via the proposed MAC CE is a maximum of 1. For example, if a total of 4 CSI reporting settings are configured for SP-CSI reporting on PUCCH, and 3 of these settings have L sub-settings greater than 1, and the remaining 1 CSI reporting setting has no sub-settings, then in the proposed MAC CE activation, the constraint that a maximum of 1 of the 3 CSI reporting settings is activated can be applied.

[0235] [Example #1-2] This example aims to resolve the configuration limitations of Example #1-1. According to Example #1-2, N sub-configuration indices (ra) can be set up within MAC CE for each CSI reporting setting.

[0236] Figure 17c shows a third example of the structure of a MAC CE controlling CSI reporting according to one embodiment of the present disclosure. Referring to Figure 17c, the MAC CE includes three octets and at least one of the following: a first set of fields 1733a to 1733j that indicates activation of sub-settings including serving cell ID 1731, BWP ID 1732, {C_9, C_8, C_7, C_6, C_5, C_4, C_3, C_2, C_1, C_0}, and a second set of fields 1734a to 1734d that indicates activation of CSI reporting settings including {S_3, S_2, S_1, S_0}. Referring to Figure 17c, the activated sub-setting index values ​​(etc.) can be represented for each of up to four configured sub-settings via a bitmap of X bits contained in the first set of fields 1733a to 1733j, where X may be different or the same for each sub-setting. The size of the bitmap can change depending on the sum of the number of sub-configurations of the CSI reporting settings corresponding to S_3, S_2, S_1, and S_0, or a fixed bitmap size of 4 × Y-bits can be assigned to each CSI reporting setting, taking into account a maximum of Y sub-configurations. For example, if the size of the bitmap can change depending on the sum of the number of sub-configurations of the CSI reporting settings corresponding to S_3, S_2, S_1, and S_0, and the number of sub-configurations of the CSI reporting settings corresponding to S_3, S_2, S_1, and S_0 are 4, 2, 2, and 2 respectively, then X = 10, and the remaining bits that do not fit the size of the octet can be set as reserved bits. When signaled as "{S_3, S_2, S_1, S_0}=1110", the CSI-ReportConfigIDs corresponding to S_3, S_2, and S_1 can be activated. At this time, the bitmaps {C_9, C_8, C_7, C_6}, {C_5, C_4}, and {C_3, C_2} corresponding to S_3, S_2, and S_1 respectively can communicate which sub-configuration indexes are activated.If the sub-configuration indices are mapped in ascending order from C_0 and signaled as "{C_9, C_8, C_7, C_6}=1110", then sub-configuration indices #1 / 2 / 3 can be activated for the CSI-ReportConfigID corresponding to S_3. In other words, a terminal that receives the signaling "{C_9, C_8, C_7, C_6}=1110" can recognize that sub-configuration indices #1 / 2 / 3 associated with the CSI-ReportConfigID corresponding to S_3 have been activated.

[0237] On the other hand, among the CSI-ReportConfigIDs corresponding to S_3, S_2, S_1, and S_0, if no sub-configurations are set for a particular CSI-ReportConfigID, or if one sub-configuration is set for that CSI-ReportConfigID, the size of the bitmap corresponding to that CSI-ReportConfigID is 0 or a fixed size of Y bits. Even if a bitmap of fixed size Y bits is assigned, the terminal can ignore the corresponding Y-bit information. In other words, based on the number of sub-configurations included in the CSI report configuration, at least some of the Y bits that indicate whether the sub-configurations of the CSI report configuration can be activated can be ignored. Furthermore, if a Y-bit bitmap is assigned, but the number of sub-configurations included in the CSI report configuration is less than Y (x), the remaining bits (and so on) of the Y bits, excluding x bits, can be ignored. In other words, if the number of configured sub-settings is less than x+1, the terminal can use the bits at indices 0 through x-1 in the Y-bit bitmap for the sub-settings of the relevant CSI reporting setting and ignore the remaining bits.

[0238] As in the example described above, a bitmap size fixed to 4 × Y bits can be assigned. When determining the bitmap position for each CSI reporting setting, two methods can be used: Opt1) a method that assumes the size of the bitmap corresponding to each setting is fixed to Y bits (and so on), and Opt2) a method that assumes the size of the bitmap for each CSI reporting setting is variable depending on the number of sub-settings (and so on) included in each CSI reporting setting. For example, if the number of sub-settings corresponding to the CSI reporting settings is 4, 2, 2, and 2, and Y=4, then applying Opt1), the bit positions assigned to the four sub-settings corresponding to the highest configuration index are {C_15, C_14, C_13, C_12}. In contrast, applying Opt2), the bit positions assigned to the four sub-settings corresponding to the highest configuration index are {C_9, C_8, C_7, C_6}.

[0239] In other embodiments, combinations of sub-setting indices can be indicated for each CSI reporting setting using means other than bitmap information. Figure 17d shows a fourth example of the structure of a MAC CE controlling CSI reporting according to one embodiment of the present disclosure. Referring to Figure 17d, the MAC CE includes three octets and includes a serving cell ID 1741, a BWP ID 1742, a first set of fields 1743a to 1743d indicating the activation of sub-settings for each CSI reporting setting, and at least one of a second set of fields 1744a to 1744d indicating the activation of each CSI reporting setting including {S_3, S_2, S_1, S_0}.

[0240] As shown in Figure 17d, when a first set of fields 1743a to 1743d is used to indicate the activation of sub-configurations for each CSI reporting setting, a combination of sub-configuration indices corresponding to K code points for each CSI reporting setting can be pre-configured / defined, and the sub-configuration indices can be signaled via approximately ceiling{log2(K)} bits. For example, a combination of sub-configuration indices for 10 code points can be pre-configured / defined for S_0, a combination of sub-configuration indices for 5 code points for S_1, a combination of sub-configuration indices for 3 code points for S_2, and a combination of sub-configuration indices for 4 code points for S_3. In this case, it is possible to specify which sub-configuration indices to be activated, each for each activated CSI-ReportConfigID, via a single field (e.g., the first set of fields 1743a to 1743d) having a total size of 11 bits (=ceiling{log2(10)}+ceiling{log2(5)}+ceiling{log2(3)}+ceiling{log2(4)}).

[0241] As shown in Figure 17d, bits that do not fit into an octet can be set to reserved bits. On the other hand, among the CSI-ReportConfigIDs corresponding to S_3, S_2, S_1, and S_0, if no sub-settings are set for a particular CSI-ReportConfigID, i.e., L=1, then the size of the field corresponding to that CSI-ReportConfigID is 0.

[0242] In other embodiments, instead of defining separate fields for each CSI reporting setting, a single field can be used to indicate the combination of sub-setting indices (etc.) to be activated for each CSI reporting setting, based on the information corresponding to the code point in that field. Even if a code point is indicated via a single field, if a particular CSI reporting setting is deactivated by the signaling {S_3, S_2, S_1, S_0}, the indication for the sub-settings corresponding to the deactivated CSI reporting setting can be ignored by the information corresponding to the code point. In other words, the code points contained in the first field set 1743a to 1743d indicate whether a sub-setting for each CSI reporting setting can be activated, but the activation status of sub-settings included in a deactivated CSI reporting setting can be ignored.

[0243] Alternatively, if a specific index value is indicated through each field, it can mean that all sub-configurations(rar) with an index value greater than or equal to that index will be activated. For example, if it is signaled as "{S_3, S_2, S_1, S_0}=0111" and 0, 1, 0 are signaled through Field_2(1743c), Field_1(1743b), and Field_0(1743a) of the first field set 1743a to 1743d, then sub-configurations(rar) with an index value greater than or equal to 0, 1, 0, set in the CSI-ReportConfigID corresponding to S_2, S_1, S_0 can be activated. Here, it has been explained that sub-configurations(rar) with an index value greater than or equal to the indicated value will be activated, but as another embodiment, sub-configurations(rar) with an index value greater than, less than, or less than or equal to the indicated value can also be activated. In this case, if L=1 without any sub-configurations for a specific CSI-ReportConfigID, signaling via the proposed field can be ignored, and activation can be determined based on the corresponding S_X.

[0244] Alternatively, in other embodiments, an index value indicated via the first field set 1743a to 1743d may activate all sub-settings(e), or one sub-setting identified by the set index value may be activated. Specifically, if a particular index value (e.g., the smallest index value or the largest index value) is indicated via each field in the first field set 1743a to 1743d, all sub-settings may be activated; if any other index value is indicated, only the corresponding sub-setting may be activated. For example, if the signaling is "{S_3, S_2, S_1, S_0}=0111" and 0, 1, 0 are signaled via Field_2(1743c), Field_1(1743b), and Field_0(1743a) of the first field set 1743a to 1743d, then all sub-settings configured for the CSI-ReportConfigID corresponding to S_2 and S_0 will be activated, and only sub-setting index #1 of the sub-settings configured for the CSI-ReportConfigID corresponding to S_1 will be activated. If there are no sub-settings for a particular CSI-ReportConfigID, i.e., L=1, then the signaling via the proposed fields will be ignored, and activation will be determined based on the corresponding S_X.

[0245] The embodiments described above can be implemented using MAC CEs that consist of the same number of bits as existing MAC CEs, depending on the maximum L value or field size. Therefore, a distinction between existing MAC CEs and proposed MAC CEs is necessary, similar to Embodiment #1-1. Alt1) The R (reserved) bit preceding the serving cell ID can be used. For example, if the value of the bit is a first value (e.g., 0 or 1), the MAC CE is an existing MAC CE; on the other hand, if the value of the bit is a second value (e.g., 1 or 0), the MAC CE is a proposed MAC CE. Alt2) If the serving cell and BWP indicated by the MAC CE operate in NES mode (e.g., if at least one CSI reporting setting has L sub-settings greater than 1), the MAC CE may have the structure of a proposed MAC CE. On the other hand, if the serving cell and BWP indicated by the MAC CE do not operate in NES mode, the MAC CE may have the structure of an existing MAC CE. Alt3) A new MAC CE different from the existing one can be defined. In other words, it can be signaled that a MAC CE has the proposed new structure via MAC subheader information (e.g., LCID or eLCID). That is, the base station can set the LCID or eLCID in the MAC subheader as the value corresponding to the proposed new structure of the MAC CE. In this case, Alt3 can also be applied when the MAC CE proposed in Example #1-2 has a different size from an existing MAC CE.

[0246] [Example #1-3] As Examples #1-1 and #1-2 described above were proposed based on existing MAC CE designs, they include, in addition to activation at the CSI reporting setting level, activation at the {S_3, S_2, S_1, S_0} signaling level, activation at the sub-setting level. In this case, the signaling overhead can increase, so Example #1-3 proposes a structure that signals only sub-setting level activation, thereby reducing the number of bits required.

[0247] Figure 17e shows a fifth example of the structure of a MAC CE controlling CSI reporting according to one embodiment of the present disclosure. Referring to Figure 17e, the MAC CE includes three octets, a serving cell ID 1751, a BWP ID 1752, and at least one of the field sets 1753a to 1753dj that indicate the activation of sub-settings for each CSI reporting setting.

[0248] Referring to Figure 17e, the bitmap of X-bits contained in the field sets 1753a to 1753dj can indicate the sub-setting index value (rar) to be activated for each of up to four configured sub-settings. The size of the bitmap can change depending on the total number of sub-settings of the configured CSI reporting settings on PUCCH, or a fixed bitmap size of 4 × Y-bits can be assigned to each configured CSI reporting setting on PUCCH, taking into account a maximum of Y sub-settings. For example, if the size of the bitmap changes depending on the total number of sub-settings of the corresponding CSI reporting settings, and the number of sub-settings of the CSI reporting settings is 4, 3, 2, and 1, then X = 10, and the remaining bits that do not fit the size of the octet can be set to reserved bits (rar). For each corresponding CSI reporting setting, starting with the setting with the largest index, signaling can be given which sub-configuration index will be activated via the bitmaps containing {C_9, C_8, C_7, C_6}, {C_5, C_4, C_3}, {C_2, C_1}, and {C_0}. If the sub-configuration indices are mapped in ascending order from C_0 and signaled as "{C_9, C_8, C_7, C_6}=0110", then sub-configuration indexes #1 / 2 for the CSI-ReportConfigID corresponding to the largest index can be activated.

[0249] For each CSI report setting configured on PUCCH, a fixed bitmap size of 4 × Y-bit can be assigned, taking into account a maximum of Y sub-settings. In determining the bitmap position for each CSI report setting, two methods can be used: Opt1) a method that assumes the bitmap size corresponding to each CSI report setting is fixed at Y bits (and so on), and Opt2) a method that assumes the bitmap size for each CSI report setting is variable depending on the number of sub-settings (and so on) included in each CSI report setting. For example, if the number of sub-settings for a CSI report setting is 4, 3, 2, and 1, and Y=4, applying Opt1) the bit positions assigned to the four sub-settings corresponding to the largest setting index are {C_15, C_14, C_13, C_12}, and applying Opt2) the bit positions assigned to the four sub-settings corresponding to the largest setting index are {C_9, C_8, C_7, C_6}.

[0250] In this embodiment, if all bitmaps corresponding to a particular CSI reporting setting are set to zero, that CSI reporting setting is deactivated. That is, when all bitmaps are set to zero, all sub-settings included in that CSI reporting setting are deactivated, and this can be interpreted as deactivation of that CSI reporting setting. In this way, the activation or deactivation of a CSI reporting setting level can be signaled by the bit values ​​of the bitmaps.

[0251] On the other hand, if no sub-configuration is set for a particular CSI-ReportConfigID, i.e., L=1, then the size of the bitmap corresponding to that CSI-ReportConfigID is 1 or a fixed Y-bit size. If a bitmap of a fixed Y-bit size is assigned, activation or deactivation can be signaled via one bit of the MSB or LSB of the corresponding Y-bit, or by being all one or all zero.

[0252] In other embodiments, combinations of sub-setting indices can be indicated for each CSI reporting setting using means other than bitmaps. Figure 17f shows a sixth example of the structure of a MAC CE controlling CSI reporting according to one embodiment of the present disclosure. Referring to Figure 17f, the MAC CE includes three octets, a serving cell ID 1761, a BWP ID 1762, and at least one of the field sets 1763a to 1763d that indicate the activation of sub-settings for each CSI reporting setting. Here, the CSI reporting setting can be limited to the CSI reporting setting configured for SP-CSI reporting on PUCCH.

[0253] As shown in Figure 17f, when field sets 1763a to 1763d are used to instruct the activation of sub-settings for each CSI reporting setting, combinations of sub-setting indices corresponding to K code points for each CSI reporting setting are pre-configured / defined, and the sub-setting indices can be signaled using approximately ceiling{log2(K)} bits. For example, combinations of sub-setting indices for 10 code points for the CSI reporting setting with the smallest index, combinations of sub-setting indices for 5 code points for the CSI reporting setting with the next largest index, combinations of sub-setting indices for 3 code points for the CSI reporting setting with the next largest index, and combinations of sub-setting indices for 4 code points for the CSI reporting setting with the next largest index can be pre-configured / defined. In this case, the activated sub-configuration index(s) can be specified for each activated CSI-ReportConfigID via a single field consisting of a total of 11 bits (=ceiling{log2(10)}+ceiling{log2(5)}+ceiling{log2(3)}+ceiling{log2(4)}). As shown in Figure 17f, bits(s) that do not fit into an octet can be set to reserved bits(s). In other embodiments, instead of defining a field for each CSI report configuration, a single field can be constructed, and one of the combinations of activated sub-configuration index(s) for each CSI report configuration can be specified as information corresponding to the code point of the single field. In this case, the combination of sub-configuration index(s) can include combinations where N=0.

[0254] In other embodiments, if a specific index value is indicated through each field, all sub-configurations(rar) with an index value greater than or equal to that index can be activated. For example, if "{S_3, S_2, S_1, S_0}=0111" is signaled and 0, 1, 0 are signaled through the Field_2(1763c), Field_1(1763b), and Field_0(1763a) fields, all sub-configurations(rar) with an index value greater than or equal to 0, 1, or 0 set in the respective CSI-ReportConfigID corresponding to S_2, S_1, and S_0 can be activated. Here, it has been explained that sub-configurations(rar) with an index value greater than or equal to the indicated value are activated, but in other embodiments, sub-configurations(rar) with an index value greater than, less than, or less than or equal to the indicated value can also be activated.

[0255] In other embodiments, the indicated index value can activate all sub-configurations, or a single sub-configuration confirmed by the set index value can be activated. Specifically, if a particular index value (e.g., the largest index value or the smallest index value) is indicated through each field, all set sub-configurations can be activated, while if other index values ​​are indicated, only the corresponding sub-configurations can be activated. For example, if "{S_3, S_2, S_1, S_0}=0111" is signaled and 0, 1, 0 are signaled through the Field_2 (1763c), Field_1 (1763b), and Field_0 (1763a) fields, all sub-configurations set in the CSI-ReportConfigID corresponding to S_2 and S_0 can be activated, and only sub-configuration index #1 of the sub-configurations set in the CSI-ReportConfigID corresponding to S_1 can be activated.

[0256] On the other hand, if no sub-configuration is set for a particular CSI-ReportConfigID among the corresponding CSI-ReportConfigIDs, i.e., L=1, then the size of the field corresponding to that CSI-ReportConfigID is 1, and activation or deactivation can be indicated by whether it is signaled as 1 or 0.

[0257] The embodiments described above can be implemented using MAC CEs that consist of the same number of bits as existing MAC CEs, depending on the maximum L value or field size. Therefore, a distinction between existing MAC CEs and proposed MAC CEs is necessary, similar to Embodiment #1-1. Alt1) The R (reserved) bit preceding the serving cell ID can be used. For example, if the value of the bit is a first value (e.g., 0 or 1), the MAC CE is an existing MAC CE; on the other hand, if the value of the bit is a second value (e.g., 1 or 0), the MAC CE is a proposed MAC CE. Alt2) If the serving cell and BWP indicated by the MAC CE operate in NES mode (e.g., if at least one CSI reporting setting has L sub-settings greater than 1), the MAC CE may have the structure of a proposed MAC CE. On the other hand, if the serving cell and BWP indicated by the MAC CE do not operate in NES mode, the MAC CE may have the structure of an existing MAC CE. Alt3) A new MAC CE different from the existing one can be defined. In other words, it can be signaled that a MAC CE has the proposed new structure via MAC subheader information (e.g., LCID or eLCID). That is, the base station can set the LCID or eLCID in the MAC subheader as the value corresponding to the proposed new structure of the MAC CE. In this case, Alt3 can also be applied when the MAC CE proposed in Example #1-2 has a different size from an existing MAC CE.

[0258] [Example #2] A solution to adaptively respond to the base station's spatial / power domain adaptation operation by preventing or deactivating CSI reporting by sub-setting #k in another CSI reporting setting when sub-setting #n in one CSI reporting setting is triggered or activated.

[0259] Example #2 relates to controlling whether a second sub-setting belonging to another CSI reporting setting can be executed based on the activation status of a first sub-setting belonging to one CSI reporting setting. In the following description, not performing AP / SP / P-CSI reporting can be understood as omitting CSI measurement / reporting for the sub-settings within the relevant CSI reporting setting.

[0260] Figure 18 illustrates an example of a procedure for controlling the state of sub-configurations based on linkages between sub-configurations according to one embodiment of the present disclosure. Figure 18 illustrates how this procedure is performed by a terminal. In this exemplary procedure, a first sub-configuration included in a first CSI reporting configuration and a second sub-configuration included in a second CSI reporting configuration have a linkage relationship.

[0261] Referring to Figure 18, in step S1801, the terminal receives configuration information for at least one CSI reporting setting. The configuration information may include information related to the CSI-RS resource or resource set associated with the CSI report, the number of APs, the power offset, the type of CSI report, etc. The configuration information may also include multiple sub-settings, and each sub-setting may be associated with at least one of the following: a different number of APs, an AP subset, or a power offset value. That is, the configuration information is information for setting a sub-setting and may include at least one of the following: information indicating an AP subset (e.g., a bitmap), information indicating a power offset value (e.g., an offset value). Here, the configuration information may be received to set up multiple CSI reporting settings, including a first CSI sub-setting and a second CSI sub-setting. Alternatively, the terminal may receive first configuration information for the first CSI sub-setting and second configuration information for the second CSI sub-setting via separate messages.

[0262] In step S1803, the terminal receives activation information for the first sub-setting included in the first CSI reporting setting. At this time, the terminal can receive information related to the activation of each sub-setting of the first CSI reporting setting. That is, the terminal can receive activation information not only for the first sub-setting but also for each of the multiple sub-settings included in the first CSI reporting setting. In one embodiment, the activation information for each sub-setting may be in bitmap format. For example, the first CSI reporting setting may be of AP-CSI reporting or SP-CSI reporting type.

[0263] In step S1805, the terminal determines whether to activate the first sub-configuration included in the first CSI reporting configuration. That is, the terminal can determine whether to activate or deactivate the first sub-configuration based on the activation information received in step S1803.

[0264] In step S1807, the terminal determines whether to activate a second sub-configuration included in the second CSI reporting configuration. That is, the terminal can determine whether to activate a second sub-configuration that has a linkage relationship with the first sub-configuration. In other words, the terminal can determine whether to activate a second sub-configuration based on whether the first sub-configuration is activatable and the linkage relationship between the first sub-configuration and the second sub-configuration. Here, the linkage relationship can be defined as a relationship in which, when one is activated, the other is also activated; when one is activated, the other is deactivated; when one is deactivated, the other is also deactivated; or when one is deactivated, the other is activated. Furthermore, the linkage relationship can be defined so as to affect both and affect one.

[0265] As illustrated in the embodiment described with reference to Figure 18, the activation or deactivation of one of the interconnected sub-settings can control the activation or deactivation of another. Hereinafter, this disclosure describes more detailed embodiments of state control of sub-settings based on interconnections.

[0266] As shown in Table 5 above, SP-CSI reports can be transmitted via PUCCH or PUSCH. In the case of AP-CSI reports, the terminal can feed back values ​​such as CQI, PMI, and RI measured from the CSI-RS corresponding to the code point indicated in the CSI request field in the UL grant that schedules PUSCH (e.g., a code point linked to a state set by the CSI-AperiodicTriggerStateList parameter), via the scheduled PUSCH. P-CSI reports may include values ​​such as CQI, PMI, and RI measured via a CSI-RS resource set up in advance by higher-level signaling, and the terminal can feed back P-CSI reports via a PUCCH resource set up in advance by higher-level signaling. In this case, if the PUCCH resource overlaps with the PUSCH resource, the terminal can feed back P-CSI reports via the PUSCH resource.

[0267] In this embodiment, the ability to perform a CSI report by sub-setting ID#Y in the P-CSI report setting can be determined by whether sub-setting ID#X in the AP-CSI or SP-CSI report setting is triggered / activated / instructed via DCI or MAC CE. This is because, considering that P-CSI reports are set up via RRC signaling and AP-CSI or SP-CSI reports can be triggered / activated via DCI / MAC-CE signaling in addition to RRC signaling, existing L1 / L2 signaling for triggering / activating AP-CSI or SP-CSI reports can be reused without introducing additional L1 / L2 signaling to change the sub-setting for P-CSI reports. From this perspective, this disclosure proposes changing sub-settings in P-CSI reports via signaling for AP / SP-CSI reports, but it is obvious that the same method can also be applied in the following cases. Furthermore, while this disclosure exemplifies a one-to-one mapping between sub-settings, the proposed technology can be extended to also be applied to one-to-many mappings.

[0268] - Based on whether sub-configuration ID#X2 in the AP / SP-CSI reporting configuration is triggered by DCI or MAC-CE, the CSI execution status of sub-configuration ID#Y in the AP / SP-CSI reporting configuration is determined.

[0269] - Based on whether sub-configuration ID#X2 in the P-CSI reporting configuration is triggered by DCI or MAC-CE, determine whether CSI execution is possible for sub-configuration ID#Y in the P-CSI reporting configuration.

[0270] - Based on whether sub-configuration ID#X2 in the P-CSI reporting configuration is triggered by DCI or MAC-CE, the CSI execution status of sub-configuration ID#Y in the AP / SP-CSI reporting configuration is determined.

[0271] At this time, when the sub - configuration ID#X is AP - CSI, it can be indicated via a CSI triggering state corresponding to a specific code - point in the CSI request field of the UL grant. Or, when the sub - configuration ID#X is SP - CSI, it can be indicated via the activated DCI or MAC - CE. For example, when the sub - configuration ID#X1 within a certain AP / SP - CSI reporting configuration is triggered / activated by DCI or MAC - CE, the terminal does not perform a CSI report according to the sub - configuration ID#Y within the P - CSI reporting configuration. At this time, the CSI report according to the sub - configuration ID#Y within the P - CSI reporting configuration can be executed again after a certain period of time. Here, the certain period of time is called T1, and the value of T1 is predefined or can be set / indicated by upper - layer signaling, MAC CE or DCI. Or, when the sub - configuration ID#X2 within the AP / SP - CSI reporting configuration is triggered by DCI or MAC - CE, the terminal can execute a CSI report according to the sub - configuration ID#Y within the P - CSI reporting configuration. In this case, the linkage between the sub - configuration ID#X1 within the AP / SP - CSI reporting configuration and the sub - configuration ID#Y within the P - CSI reporting configuration and / or the linkage between the sub - configuration ID#X2 within the AP / SP - CSI reporting configuration and the P - CSI reporting ID#Y can be pre - set.

[0272] Or, when the number of APs (antenna ports) associated with the sub - configuration ID#X1 within the AP - CSI reporting configuration is N1 and the number of APs associated with the sub - configuration ID#Y within the P - CSI reporting configuration is N2, N1 is less than or equal to N2. That is, when an AP / SP - CSI report corresponding to fewer APs is triggered / activated, the terminal considers that some antenna elements or some APs of the base station are turned off and does not execute a P - CSI report associated with a larger number of APs.

[0273] Also, when the number of APs associated with the sub - setting ID#X2 within the AP / SP - CSI report setting is N3, and the number of APs associated with the sub - setting ID#Y within the P - CSI report setting is N2, N3 is greater than or equal to N2. That is, when the AP / SP - CSI report corresponding to more APs is triggered / activated, the terminal considers that the antenna elements or APs of the base station are further turned on, and can additionally execute the P - CSI report associated with a smaller or the same number of APs.

[0274] The above - described embodiments can be extended and applied not only to the number of APs but also to the CSI - RS power value. This is because when the number of antenna elements corresponding to an AP varies, the CSI - RS power value can also change. Here, the CSI - RS power value can be understood as the sum of the SSS power value P_s and the power offset P_o between the SSS and the CSI - RS.

[0275] Specifically, when the CSI - RS power value associated with the sub - setting ID#X1 within the AP - CSI report setting is P1, and the CSI - RS power value associated with the sub - setting ID#Y within the P - CSI report setting is P2, P1 is less than or equal to P2. That is, when the AP / SP - CSI report corresponding to a smaller power value is triggered / activated, the terminal considers that some of the antenna elements or some APs of the base station are turned off and does not execute the P - CSI report associated with a larger power value.

[0276] Also, when the CSI - RS power value associated with the sub - setting ID#X2 within the AP / SP - CSI report setting is P3, and the CSI - RS power value associated with the sub - setting ID#Y within the P - CSI report setting is P2, P3 is greater than or equal to P2. That is, when the AP / SP - CSI report corresponding to a larger power value is triggered / activated, the terminal considers that the antenna elements or APs of the base station are further turned on, and can additionally execute the P - CSI report associated with a smaller or the same power value.

[0277] [Example #3] A method for specifying N sub-settings (etc.) via DCI or MAC CE for a CSI reporting setting that includes L sub-settings.

[0278] N sub-configurations can be specified via a Group-common DCI, a Group-common MAC CE, a MAC CE that activates SP-CSI reporting on PUCCH, a DCI that activates SP-CSI reporting on PUSCH, or a DCI that triggers AP-CSI reporting (e.g., UL grant). A specific example of specifying N sub-configurations is as follows:

[0279] To instruct N sub-settings (rar), the MAC CE signaling scheme proposed in the aforementioned Example #1 can be extended. For example, the sub-setting indexes (rar) to be activated can be instructed based on a bitmap-based scheme, an index-instruction-based scheme (e.g., a scheme that instructs only specific indexes and activates one or more sub-settings according to predetermined rules), or a code-point-based scheme (e.g., a scheme that pre-configures / defines combinations of sub-settings (rar) activated by each code-point and signals specific code-points). The sub-setting index instruction scheme can be individually signaled for each CSI reporting setting index, or it can be commonly signaled for CSI reporting setting indexes belonging to a specific group based on a pre-configured / defined grouping scheme. Alternatively, sub-setting indexes (rar) to be activated can be pre-configured for each code-point, each CSI reporting setting, or each CSI reporting setting group, and by instructing a specific code-point, it can be instructed which sub-setting indexes (rar) will be activated for each CSI reporting setting or each CSI reporting setting group. For example, when setting the CSI triggering state using RRC signaling, a list of sub-configurations (e.g., csi-ReportSubConfigTriggerList) is set using the relevant parameter (e.g., CSI-AperiodicTriggerState), and the CSI triggering state linked to the list of sub-configurations is indicated via the DCI's CSI request field, thereby indicating N sub-configurations.

[0280] If a specific sub-configuration index value is indicated via a specific field in DCI or MAC-CE, all sub-configurations(rar) with an index value greater than or equal to that index can be activated. For example, signaling a value of 1 via the field can be interpreted as activating / triggering / indicating all sub-configurations(rar) with an index value of 1 or greater set in the CSI-ReportConfigID(rar) corresponding to the field indication. Here, it has been explained that sub-configurations(rar) with an index value greater than or equal to the indicated value are activated, but in other embodiments, sub-configurations(rar) with an index value exceeding, less than, or less than the indicated value can also be activated.

[0281] Alternatively, if a specific sub-configuration index value is indicated via a specific field in DCI or MAC-CE, this may mean that all sub-configuration indices(etc.) within the same CSI reporting configuration and / or different CSI reporting configurations linked to AP numbers less than or equal to the AP number corresponding to that sub-configuration index will be activated. Alternatively, if a specific sub-configuration index value is indicated via a specific field in DCI or MAC-CE, this may mean that all sub-configuration indices(etc.) within the same CSI reporting configuration and / or different CSI reporting configurations linked to power offset values ​​less than or equal to the power offset value linked to that sub-configuration index will be activated.

[0282] Figure 19 illustrates an example of a procedure for transmitting a CSI report based on a sub-configuration according to one embodiment of the present disclosure. Figure 19 illustrates signal exchange between terminal 2410 and base station 2420.

[0283] Referring to Figure 19, in step S1901, base station 2420 transmits configuration information related to a CSI reporting setting that includes L sub-settings to terminal 2410. That is, the base station configures L sub-settings for the CSI reporting setting. In other words, when terminal 2410 receives configuration information for a single CSI reporting setting from base station 2420, that CSI reporting setting may contain multiple sub-settings. In this case, each sub-setting may correspond to a spatial / power adaptation pattern.

[0284] In step S1903, base station 2420 transmits information to terminal 2410 to instruct / trigger / activate N sub-settings out of L sub-settings configured in the CSI reporting setting. Even though L sub-settings are configured, by turning the antenna on / off or adjusting the power value, only CSI information for fewer than L sub-settings is actually required. Therefore, base station 2420 can additionally signal information for the N sub-settings out of the L sub-settings belonging to the CSI reporting setting that terminal 2410 will actually perform CSI reporting on.

[0285] In step S1905, terminal 2410 calculates the CSI values ​​corresponding to N sub-settings (ra). Since only N sub-settings (ra) out of L sub-settings were activated, terminal 2410 can generate a CSI report using the remaining sub-settings (ra) excluding LN sub-settings (ra).

[0286] In step S1907, terminal 2410 sends a CSI report with N sub-configurations to base station 2420. In other words, terminal 2410 can report CSI(etc.) with N sub-configurations. This has the advantage of reducing the CSI calculation complexity and CSI payload size of terminal 2410, because instead of generating a CSI report corresponding to L sub-configurations each time, terminal 2410 generates a CSI containing only CSI(etc.) corresponding to L or less N sub-configurations.

[0287] As in the various embodiments described above, a base station can link multiple AP counts or multiple power offset values ​​to a single CSI reporting setting by turning antennas on / off or adjusting power values. Specifically, multiple sub-settings can be configured within a single CSI reporting setting, and each sub-setting can be linked to a specific number of APs or a specific power offset value. In this case, the CSI reporting overhead for terminals can be reduced by signaling the on / off status of CSI reporting corresponding to a specific sub-setting through adjustment of the base station's antenna count or power value.

[0288] The proposed methods described above can be implemented independently, but they can also be implemented as a combination (or merger) of some of the proposed methods. Rules can be defined so that the base station informs the terminal of the applicability of the proposed method (or information regarding the rules of the proposed method) via a predefined signal (e.g., a physical layer signal or a higher layer signal).

[0289] This disclosure can be embodied in other specific forms, provided that the technical ideas and essential features described herein do not deviate from those described herein. Therefore, the above detailed description should not be constrained in any way and should be considered illustrative. The scope of this disclosure shall be determined by a reasonable interpretation of the attached claims, and all modifications within the equivalent scope of this disclosure shall be included within the scope of this disclosure. Furthermore, examples may be formed by combining claims that are not explicitly referenced in the claims, or by including them as new claims through amendments made after filing.

[0290] [Industrial applicability] The embodiments of this disclosure can be applied to a variety of wireless connectivity systems. Examples of such systems include 3GPP (3rd Generation Partnership Project) or 3GPP2 systems.

[0291] Embodiments of the present disclosure can be applied not only to the various wireless connection systems but also to all technical fields to which the various wireless connection systems are applied. Furthermore, the proposed method can also be applied to mmWave and THz communication systems using ultra-high frequency bands.

[0292] Additionally, embodiments of the present disclosure can also be applied to various applications such as autonomous vehicles and drones.

[0293] [Claims at the time of international filing] [Claim 1] A method performed by a terminal (user equipment: UE) in a wireless communication system, comprising: receiving configuration information for at least one CSI (channel state information) report including a plurality of sub-configurations; receiving a message including information related to activation for each of the plurality of sub-configurations; generating at least one CSI based on at least one activated sub-configuration among the plurality of sub-configurations; and transmitting a CSI report including the at least one CSI, where the at least one CSI report configuration includes a first CSI report configuration and a second CSI report configuration, and the message includes a first set of fields indicating whether sub-configurations included in the first CSI report configuration can be activated and a second set of fields indicating whether sub-configurations included in the second CSI report configuration can be activated. [Claim 2] The method according to claim 1, wherein the first set of fields and the second set of fields include the same number of fields. [Claim 3] The method according to claim 1, wherein at least a portion of the fields indicating whether or not to activate the sub-settings included in the second CSI reporting setting are ignored, based on the number of sub-settings included in the second CSI reporting setting. [Claim 4] The method according to claim 1, wherein the message includes instruction information indicating that it includes information relating to the activation of each of the plurality of sub-settings. [Claim 5] The method according to claim 4, wherein the instruction information is signaled by an eLCID (extended logical channel identifier) ​​contained in a MAC (media access control) subheader. [Claim 6] The method according to claim 1, wherein the message includes a MAC CE (control element) that includes information relating to the activation of each of the plurality of sub-settings, information relating to the activation of the first CSI reporting setting, and information relating to the activation of the second CSI reporting setting. [Claim 7] The method according to claim 1, wherein the message includes DCI (downlink control information) which includes information related to the activation of each of the plurality of sub-settings. [Claim 8] A terminal (user equipment: UE) in a wireless communication system, Transceiver; and, A processor connected to the aforementioned transceiver; The aforementioned processor, Receive configuration information for at least one CSI (channel state information) report that includes multiple sub-configurations. A message is received containing information related to the activation of each of the aforementioned sub-settings. At least one CSI is generated based on at least one activated sub-setting among the plurality of sub-settings, It is configured to transmit a CSI report that includes at least one CSI, The aforementioned at least one CSI reporting setting includes a first CSI reporting setting and a second CSI reporting setting, The message includes a terminal comprising a first set of fields indicating whether to activate a sub-setting included in the first CSI reporting setting, and a second set of fields indicating whether to activate a sub-setting included in the second CSI reporting setting. [Claim 9] A communication device, At least one processor; and, The system comprises at least one computer memory connected to the at least one processor, which stores instruction words that instruct operations when executed by the at least one processor; The aforementioned operation is, A step of receiving configuration information for at least one CSI (channel state information) report that includes multiple sub-configurations; A step of receiving a message containing information related to the activation of each of the aforementioned sub-settings; A step of generating at least one CSI based on at least one activated sub-setting among the plurality of sub-settings; and The step of sending a CSI report that includes at least one CSI; The aforementioned at least one CSI reporting setting includes a first CSI reporting setting and a second CSI reporting setting, A communication device in which the message includes a first set of fields indicating whether or not to activate a sub-setting included in the first CSI reporting setting, and a second set of fields indicating whether or not to activate a sub-setting included in the second CSI reporting setting. [Claim 10] A non-transitory computer-readable medium that stores at least one instruction, The processor includes at least one executable instruction word, The aforementioned at least one command word is given to the device, Receive configuration information for at least one CSI (channel state information) report that includes multiple sub-configurations. A message is received containing information related to the activation of each of the aforementioned sub-settings. At least one CSI is generated based on at least one activated sub-setting among the plurality of sub-settings, Instruct to submit a CSI report that includes at least one of the aforementioned CSIs, The aforementioned at least one CSI reporting setting includes a first CSI reporting setting and a second CSI reporting setting, The message is a computer-readable medium comprising a first set of fields indicating whether to activate a sub-setting included in the first CSI reporting setting, and a second set of fields indicating whether to activate a sub-setting included in the second CSI reporting setting.

Claims

1. A method performed by a terminal (user equipment: UE) in a wireless communication system, A step of receiving configuration information for at least one CSI (channel state information) report containing multiple sub-configurations; A step of receiving a message containing information related to the activation of each of the aforementioned sub-settings; A step of generating at least one CSI based on at least one activated sub-setting among the plurality of sub-settings; and, The step of transmitting a CSI report that includes at least one CSI; The at least one CSI reporting setting includes a first CSI reporting setting and a second CSI reporting setting. A method wherein the message includes a first set of fields indicating whether or not to activate a sub-setting included in the first CSI reporting setting, and a second set of fields indicating whether or not to activate a sub-setting included in the second CSI reporting setting.

2. The method according to claim 1, wherein the first field set and the second field set include the same number of fields.

3. The method according to claim 1, wherein at least a portion of the fields indicating whether or not to activate the sub-settings included in the second CSI reporting setting are ignored, based on the number of sub-settings included in the second CSI reporting setting.

4. The method according to claim 1, wherein the message includes instruction information indicating that it includes information relating to the activation of each of the plurality of sub-settings.

5. The method according to claim 4, wherein the instruction information is signaled by an eLCID (extended logical channel identifier) ​​contained in a MAC (media access control) subheader.

6. The method according to claim 1, wherein the message includes a MAC CE (control element) which includes information relating to the activation of each of the plurality of sub-settings, information relating to the activation of the first CSI reporting setting, and information relating to the activation of the second CSI reporting setting.

7. The method according to claim 1, wherein the message includes a DCI (downlink control information) containing information related to the activation of each of the plurality of sub-settings.

8. A terminal (user equipment: UE) in a wireless communication system, Transceiver; and, A processor connected to the aforementioned transceiver; The aforementioned processor, Receive configuration information for at least one CSI (channel state information) report containing multiple sub-configurations. A message is received containing information related to the activation of each of the aforementioned sub-settings. At least one CSI is generated based on at least one activated sub-setting among the plurality of sub-settings, It is configured to transmit a CSI report that includes at least one CSI, The at least one CSI reporting setting includes a first CSI reporting setting and a second CSI reporting setting. The message includes a terminal comprising a first set of fields indicating whether to activate a sub-setting included in the first CSI reporting setting, and a second set of fields indicating whether to activate a sub-setting included in the second CSI reporting setting.

9. A communication device, At least one processor; and, The system comprises at least one computer memory connected to the at least one processor, which stores instruction words that instruct operations when executed by the at least one processor; The aforementioned operation is, A step of receiving configuration information for at least one CSI (channel state information) report containing multiple sub-configurations; A step of receiving a message containing information related to the activation of each of the aforementioned sub-settings; A step of generating at least one CSI based on at least one activated sub-setting among the plurality of sub-settings; and, The step of sending a CSI report that includes at least one CSI; The at least one CSI reporting setting includes a first CSI reporting setting and a second CSI reporting setting. A communication device in which the message includes a first set of fields indicating whether or not to activate a sub-setting included in the first CSI reporting setting, and a second set of fields indicating whether or not to activate a sub-setting included in the second CSI reporting setting.

10. A non-transitory computer-readable medium that stores at least one instruction, The processor includes at least one executable instruction word, The aforementioned at least one command word is given to the device, Receive configuration information for at least one CSI (channel state information) report containing multiple sub-configurations. A message is received containing information related to the activation of each of the aforementioned sub-settings. At least one CSI is generated based on at least one activated sub-setting among the plurality of sub-settings, Instruct to send a CSI report that includes at least one CSI, The at least one CSI reporting setting includes a first CSI reporting setting and a second CSI reporting setting. The message is a computer-readable medium comprising a first set of fields indicating whether to activate a sub-setting included in the first CSI reporting setting, and a second set of fields indicating whether to activate a sub-setting included in the second CSI reporting setting.

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