Method and device for performing uplink transmission / reception in wireless communication system

Abstract

A method and a device for performing uplink transmission / reception in a wireless communication system are disclosed. The method according to one embodiment of the present disclosure may comprise steps in which a base station: transmits, to a terminal, first configuration information related to at least one reference signal (RS); transmits, to the terminal, first control information including i) information about a transmission operation for report information about the at least one RS and / or ii) information about a transmission time for the report information; and receives, from the terminal, the report information on the basis of the first control information, wherein the information about the transmission operation for the report information can include the transmission frequency (M) of the report information.

Description

Method and device for performing uplink transmission and reception in a wireless communication system

[0001] The present disclosure relates to a wireless communication system, and more particularly, to a method and device for performing uplink transmission and reception in a wireless communication system.

[0002] The fifth generation (5G) wireless communication system, the successor to 4G LTE (long-term evolution), is a new, clean-slate mobile communication system characterized by high performance, low latency, and high availability. 5G NR (New Radio) can utilize all available spectrum resources, from low-frequency bands below 1 GHz, to intermediate-frequency bands between 1 GHz and 10 GHz, and to high-frequency (or millimeter wave) bands above 24 GHz. 6G wireless communication systems are being developed based on the underlying technologies of 5G wireless communication.

[0003] The 6G wireless communication system is being developed with the goals of (i) very high data rates per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) reduced energy consumption of battery-free Internet of Things (IoT) devices, (vi) ultra-reliable connectivity, and (vii) connected intelligence with machine learning capabilities. The vision of the 6G system can be divided into four aspects: intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity. Considering the requirements of the 6G system, such as a peak data rate of 1 Tbps per device, an end-to-end latency of 1 ms, a maximum spectrum efficiency of 100 bps / Hz, support for mobility of 1000 km / h, satellite integration, artificial intelligence (AI), autonomous vehicles, extended reality (XR), and haptic communication, various technologies are being researched.

[0004] The technical problem of the present disclosure is to provide a method and device for performing uplink transmission and reception in a wireless communication system.

[0005] In addition, an additional technical problem of the present disclosure is to provide a method and device for controlling the transmission operation / timing of one or more reference signals (RS) and / or reports through dynamic instructions.

[0006] The technical problems to be achieved in the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present disclosure belongs from the description below.

[0007] A method according to one embodiment of the present disclosure comprises the steps of: receiving, by a terminal, first configuration information related to at least one reference signal (RS) from a base station; receiving, by the terminal, first control information from the base station, including at least one of i) information on a transmission operation of report information for the at least one RS or ii) information on a transmission time of the report information; and transmitting, by the terminal, the report information to the base station based on the first control information, wherein the information on the transmission operation of the report information may include a number of transmissions (M) of the report information.

[0008] A method according to one embodiment of the present disclosure comprises the steps of: transmitting, by a base station, first configuration information related to at least one reference signal (RS) to a terminal; transmitting, by the base station, first control information including at least one of i) information on a transmission operation of report information for the at least one RS or ii) information on a transmission time of the report information; and receiving, by the base station, the report information from the terminal based on the first control information, wherein the information on the transmission operation of the report information may include a number of transmissions (M) of the report information.

[0009] According to various embodiments of the present disclosure, a method and apparatus for performing uplink transmission and reception in a wireless communication system can be provided.

[0010] Additionally, various embodiments of the present disclosure may provide a method and device for controlling the transmission operation / timing of one or more RSs and / or reports through dynamic instructions.

[0011] Additionally, by various embodiments of the present disclosure, resource efficiency can be improved as the RS and / or CSI report transmission cycle / timing is dynamically controlled depending on the reliability and / or situation of the terminal.

[0012] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned will be clearly understood by a person having ordinary skill in the art to which the present disclosure pertains from the description below.

[0013] The accompanying drawings, which are incorporated in and are part of the detailed description to aid in understanding the present disclosure, provide embodiments of the present disclosure and, together with the detailed description, describe the technical features of the present disclosure.

[0014] Figure 1 illustrates a flexible network topology to which some examples of the present disclosure may be applied.

[0015] FIG. 2 illustrates an example of a communication system to which some examples of the present disclosure may be applied.

[0016] FIG. 3 illustrates an example of a wireless device to which some examples of the present disclosure may be applied.

[0017] FIG. 4 exemplarily illustrates a communication procedure between a first node and a second node to which some examples of the present disclosure may be applied.

[0018] FIG. 5 illustrates a functional framework for AI operations to which some examples of the present disclosure may be applied.

[0019] FIG. 6 illustrates an example of operations related to AI model training and AI model inference to which some examples of the present disclosure may be applied.

[0020] FIG. 7 illustrates another example of operations related to AI model training and AI model inference to which some examples of the present disclosure may be applied.

[0021] FIG. 8 illustrates another example of operations related to AI model training and AI model inference to which some examples of the present disclosure may be applied.

[0022] FIG. 9 illustrates an electromagnetic spectrum to which some examples of the present disclosure may be applied.

[0023] FIG. 10 illustrates an example of a system information transmission / reception procedure to which some examples of the present disclosure may be applied.

[0024] FIG. 11 exemplarily illustrates a beam management procedure to which some examples of the present disclosure may be applied.

[0025] Figures 12 and 13 illustrate examples of NTN scenarios to which some examples of the present disclosure may be applied.

[0026] FIG. 14 illustrates examples of sensing operations to which some examples of the present disclosure may be applied.

[0027] FIG. 15 illustrates an example of a procedure for CSI measurement and reporting to which some examples of the present disclosure may be applied.

[0028] FIG. 16 is a flowchart illustrating a method for a terminal to perform a communication procedure according to one embodiment of the present disclosure.

[0029] FIG. 17 is a flowchart illustrating a method for a base station to perform a communication procedure according to one embodiment of the present disclosure.

[0030] FIG. 18 is a diagram for explaining an M-shot (AP) transmission procedure according to one embodiment of the present disclosure.

[0031] FIG. 19 is a diagram for explaining an operation according to transmission activation according to one embodiment of the present disclosure.

[0032] FIG. 20 is a diagram for explaining control of a transmission cycle according to one embodiment of the present disclosure.

[0033] FIG. 21 is a diagram for explaining a signaling procedure of a network side and a terminal according to one embodiment of the present disclosure.

[0034] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The detailed description set forth below, together with the accompanying drawings, is intended to explain exemplary embodiments of the present disclosure and is not intended to represent the only embodiments in which the present disclosure may be practiced. The following detailed description includes specific details to provide a thorough understanding of the present disclosure. However, one of ordinary skill in the art will appreciate that the present disclosure may be practiced without these specific details.

[0035] In some cases, to avoid obscuring the concepts of the present disclosure, known structures and devices may be omitted or illustrated in block diagram form focusing on the core functions of each structure and device.

[0036] In the present disclosure, when a component is said to be "connected," "coupled," or "connected" to another component, this may include not only a direct connection but also an indirect connection in which another component exists between them. Furthermore, the terms "comprises" or "has" in the present disclosure specify the presence of the mentioned features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0037] In this disclosure, terms such as “first,” “second,” etc. are used only to distinguish one component from another and are not used to limit the components, and do not limit the order or importance between the components unless specifically stated otherwise. Accordingly, within the scope of this disclosure, a first component in one embodiment may be referred to as a second component in another embodiment, and similarly, a second component in one embodiment may be referred to as a first component in another embodiment.

[0038] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of the claims. As used in the description of the embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

[0039] In this disclosure, "A or B" can mean "only A," "only B," or "both A and B." In other words, "A or B" in this disclosure can be interpreted as "A and / or B." For example, "A, B or C" in this disclosure can mean "only A," "only B," "only C," or "any combination of A, B and C."

[0040] As used herein, a slash ( / ) or a comma may mean "and / or." For example, "A / B" may mean "A and / or B." Accordingly, "A / B" may mean "only A," "only B," or "both A and B." For example, "A, B, C" may mean "A, B, or C."

[0041] In the present disclosure, “at least one of A and B” may mean “only A,” “only B,” or “both A and B.” Additionally, in the present disclosure, the expressions “at least one of A or B” or “at least one of A and / or B” may be interpreted identically to “at least one of A and B.”

[0042] Additionally, in the present disclosure, “at least one of A, B and C” can mean “only A,” “only B,” “only C,” or “any combination of A, B and C.” Additionally, “at least one of A, B or C” or “at least one of A, B and / or C” can mean “at least one of A, B and C.”

[0043] Additionally, parentheses used in the present disclosure may mean "for example." Specifically, when indicated as "control information (PDCCH)", "PDCCH" may be described as an example of "control information." In other words, "control information" in the present disclosure is not limited to "PDCCH," and "PDCCH" may be described as an example of "control information." Furthermore, even when indicated as "control information (i.e., PDCCH)", "PDCCH" may be described as an example of "control information."

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

[0045] Technical features individually described in one drawing in this disclosure may be implemented individually or simultaneously.

[0046] In the present disclosure, a terminal or user equipment (UE) may be a portable device and may be a first node that receives a signal from a base station / second node / IAB (integrated access backhaul) node.

[0047] In the present disclosure, a base station (BS) may be a second node / IAB node / Transmission-Reception Point (TRP).

[0048] In the present disclosure, higher layer parameters may be parameters configured, pre-configured, or pre-defined for the terminal. For example, a base station or a network may transmit higher layer parameters to the terminal. For example, the higher layer parameters may be transmitted via radio resource control (RRC) signaling or medium access control (MAC) signaling.

[0049] In the present disclosure, "setting or defining" may be interpreted as being set to a device through predefined signaling (e.g., SIB (system information block), MAC, RRC) from a base station or network. In the present disclosure, "setting or defining" may be interpreted as being set to a device through separate signaling or being defined in advance without separate signaling.

[0050] In the present disclosure, transmitting or receiving a channel means transmitting or receiving information or a signal through the channel. For example, transmitting a control channel means transmitting control information or a signal through the control channel. Similarly, transmitting a data channel means transmitting data information or a signal through the data channel.

[0051] The technology described in the present disclosure can be used in various wireless communication 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). CDMA can be implemented with wireless technologies such as UTRA (universal terrestrial radio access) or CDMA2000. TDMA can be implemented with wireless technologies such as GSM (global system for mobile communications) / GPRS (general packet radio service) / EDGE (enhanced data rates for GSM evolution). OFDMA can be implemented with wireless technologies such as IEEE (Institute of Electrical and Electronics Engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, E-UTRA (evolved UTRA), LTE (long term evolution), and 5G NR.

[0052] The technology described in the present disclosure can be implemented with 6G wireless technology and applied to various 6G systems. For example, the 6G system can have key factors such as enhanced mobile broadband (eMBB), ultra-reliable low latency communications (URLLC), massive machine-type communication (mMTC), artificial intelligence (AI) integrated communication, tactile internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion, and enhanced data security.

[0053] Network structure

[0054] Figure 1 illustrates a flexible network topology to which some examples of the present disclosure may be applied.

[0055] To compensate for incomplete network coverage areas, a network topology that allows for more flexible and resilient split radio access networks (RANs) may be considered. For this purpose, various nodes, such as integrated access backhaul (IAB) nodes, relays, and radio frequency (RF) repeaters, as illustrated in Figure 1, may be applied, or a non-terrestrial network (NTN) may be integrated. For example, an IAB node may correspond to a node that provides wireless backhaul. For example, a relay may refer to any intermediate point, and in the case of a sidelink relay where a terminal functions as a relay, it may collectively refer to a terminal-to-network (U2N) relay and a terminal-to-terminal (U2U) relay. For example, an RF repeater may correspond to a node that simply performs the function of signal amplification and forwarding, or in the case of a network-controlled repeater, it may not only amplify and forward signals but also adjust its transmission and reception settings based on information provided by the network. For example, NTN nodes could be satellites or aircraft that provide NTN coverage that terrestrial networks struggle to provide. Beyond these examples, various intermediate points can be introduced to improve the network topology.

[0056] Referring to Figure 1, a split RAN can support the division of a base station into a centralized unit (CU) and one or more distributed units (DUs). The CU and DU can correspond to logical units. The CU can be further divided into a control plane (CP) portion and one or more user plane (UP) portions. Since a failure in the CU-CP affects not only the CU-UP but also the DUs, various intermediate points can be introduced to compensate for this.

[0057] An intermediate point may correspond to a terminal or a base station, depending on its relationship to other nodes. For example, an IAB node may include a mobile-termination (MT) portion and a unit (DU). The MT may connect the IAB node to a donor node. The unit (DU) of an IAB node may serve other terminals or connect to other IAB nodes to provide multi-hop wireless backhaul to the terminal. For example, an IAB node may correspond to a base station in its relationship to a user-side node, and to a terminal in its relationship to a network-side node.

[0058] In some examples of the present disclosure, the description of a terminal may equally apply not only to a user-side endpoint, but also to an intermediate point corresponding to a terminal in a relative relationship with a network-side endpoint. Similarly, in some examples of the present disclosure, the description of a base station may equally apply not only to a network-side endpoint, but also to an intermediate point corresponding to a base station in a relative relationship with a user-side endpoint. In most cases where there is no additional description of the operations of three or more entities, the communicating entities in the present disclosure are briefly described as terminals and / or base stations (or first nodes and / or second nodes), where the terms terminal and / or base stations (or first nodes and / or second nodes) are interpreted to include / replace any endpoint or any intermediate point in relation to other nodes.

[0059] As such, in some examples of the present disclosure, for the sake of simplicity of explanation, the subjects of the operation may be referred to as terminals and / or base stations (or first nodes and / or second nodes). In addition, the terms terminal and / or base station (or first node and / or second node) may also be interpreted / replaced as in the following examples: For example, the terminal (or first node) and the base station (or second node) may respectively correspond to the first endpoint and the second endpoint; may respectively correspond to the endpoint and the intermediate point; may respectively correspond to the intermediate point and the endpoint; or may respectively correspond to the first intermediate point and the second intermediate point.

[0060] In the present disclosure, there may be zero or more intermediate points between the base station and the terminal. If an intermediate point exists, it may correspond to an IAB node / relay / RF repeater / NTN node, or a node supporting other functions. The intermediate point may be a node with a fixed location or a node with an unfixed location.

[0061] Systems applicable to this disclosure

[0062] FIG. 2 illustrates an example of a communication system to which some examples of the present disclosure may be applied.

[0063] The communication system (100) applied to the present disclosure includes a wireless device (110), a network device (120), and a network (130). Here, the wireless device (110) refers to a device that performs communication using a wireless access technology (e.g., LTE, LTE-A, LTE-A pro, NR, 5G, 5G-A, 6G) and may be referred to as a communication / wireless / 5G / 6G device. Although not limited thereto, the wireless device (110) may include a robot (110a), a vehicle (110b-1, 110b-2), an XR (extended reality) device (110c), a hand-held device (110d), a home appliance (110e), an IoT (Internet of Things) device (110f), and an AI (artificial intelligence) device / server (110g). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc. Here, the vehicle (110b-1, 110b-2) may include an unmanned aerial vehicle (UAV) (e.g., a drone). The XR device (110c) includes an augmented reality (AR) / virtual reality (VR) / mixed reality (MR) device, and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) equipped in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, digital signage, a vehicle, a robot, etc. The portable device (110d) may include a smartphone, a smart pad, a wearable device (e.g., a smart watch, smart glasses), a computer (e.g., a laptop, etc.), etc. The home appliance (110e) may include a TV, a refrigerator, a washing machine, etc. The IoT device (110f) may include a sensor, a smart meter, etc. The wireless device (110) may correspond to a terminal (or first node) or an intermediate point.The network device (120) may correspond to a base station (or second node) or another intermediate point. For example, the network device (120) may also be implemented as a wireless device (110), and a specific wireless device (120a) may act as a network device (120) to another wireless device (110).

[0064] Wireless devices (110a to 110f) can be connected to a network (130) via a network device (120). AI technology can be applied to the wireless devices (110a to 110f), and the wireless devices (110a to 110f) can be connected to an AI server (110g) via a network (130). The network (130) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR), or a 6G network. The wireless devices (110a to 110f) can communicate with each other via the network device (120) / network (130), but can also communicate directly (e.g., sidelink communication) without going through the network device (120) / network (130). For example, vehicles (110b-1, 110b-2) can communicate directly (e.g., V2V (vehicle to vehicle) / V2X (vehicle to everything) communication). Additionally, an IoT device (110f) (e.g., a sensor) can communicate directly with another IoT device (e.g., a sensor) or another wireless device (110a to 110f).

[0065] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (110a to 110f) / network devices (120), network devices (120) / network devices (120). Here, the wireless communication / connection can be established through various wireless access technologies such as uplink / downlink communication (150a), sidelink communication (150b) (or D2D communication), and communication between network devices (150c) (e.g., relay, IAB (integrated access backhaul)). Through the wireless communication / connection (150a, 150b, 150c), the wireless device and the network device / wireless device, and the network device and the network device can transmit / receive wireless signals to each other. For example, the wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, based on various descriptions of the present disclosure, at least some of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), resource allocation processes, etc., may be performed.

[0066] Device applicable to the present disclosure

[0067] FIG. 3 illustrates an example of a wireless device to which some examples of the present disclosure may be applied.

[0068] Referring to FIG. 3, the wireless device (200) can transmit and receive wireless signals via various wireless access 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 additionally include at least one transceiver (206) and / or at least one antenna (208).

[0069] The processor (202) controls the memory (204) and / or the transceiver (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (206). In addition, the processor (202) may receive a wireless signal including second information / signal via the transceiver (206), and then store information obtained from signal processing of the second information / signal in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may store software code including instructions for performing some or all of the processes controlled by the processor (202), or for performing the descriptions, functions, procedures, proposals, 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) may be connected to the processor (202) and may transmit and / or receive wireless signals via at least one antenna (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF (radio frequency) unit. In the present disclosure, a wireless device may also mean a communication modem / circuit / chip.

[0070] Hereinafter, the hardware elements of the wireless device (200) will be described in more detail. Although not limited thereto, at least one protocol layer may be implemented by at least one processor (202). For example, at least one processor (202) may implement at least one layer (e.g., a functional layer such as physical (PHY), media access control (MAC), radio link control (RLC), packet data convergence protocol (PDCP), radio resource control (RRC), and service data adaptation protocol (SDAP)). At least one processor (202) may generate at least one Protocol Data Unit (PDU) and / or at least one Service Data Unit (SDU) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. At least one processor (202) may generate a message, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. At least one processor (202) can generate a signal (e.g., a baseband signal) comprising a PDU, an SDU, a message, control information, data or information according to the functions, procedures, proposals and / or methods disclosed in this document, and provide the signal to at least one transceiver (206). At least one processor (202) can receive a signal (e.g., a baseband signal) from at least one transceiver (206) and obtain the PDU, SDU, message, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in this document.

[0071] At least one processor (202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. The at least one processor (202) may be implemented by hardware, firmware, software, or a combination thereof. For example, at least one application specific integrated circuit (ASIC), at least one digital signal processor (DSP), at least one digital signal processing device (DSPD), at least one programmable logic device (PLD), or at least one field programmable gate array (FPGA) may be included in the at least one processor (202). The descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document may be included in the at least one processor (202), or may be stored in at least one memory (204) and driven by the at least one processor (202). The descriptions, functions, procedures, suggestions, methods and / or flowcharts disclosed in this document may be implemented using firmware or software in the form of code, instructions and / or sets of instructions.

[0072] At least one memory (204) can be connected to at least one processor (202) and can store various forms of data, signals, messages, information, programs, codes, instructions and / or commands. The at least one memory (204) can be configured as a read only memory (ROM), a random access memory (RAM), an erasable programmable read only memory (EPROM), a flash memory, a hard drive, a register, a cache memory, a computer readable storage medium and / or a combination thereof. The at least one memory (204) can be located internally and / or externally to the at least one processor (202). In addition, the at least one memory (204) can be connected to the at least one processor (202) via various technologies such as a wired or wireless connection.

[0073] At least one transceiver (206) can transmit user data, control information, wireless signals / channels, etc., mentioned in the methods and / or flowcharts of this document to at least one other device. At least one transceiver (206) can receive user data, control information, wireless signals / channels, etc. mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts disclosed in this document 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 wireless signals. For example, at least one processor (202) can control at least one transceiver (206) to transmit user data, control information, or wireless signals to at least one other device. Furthermore, at least one processor (202) can control at least one transceiver (206) to receive user data, control information, or wireless signals from at least one other device. Additionally, at least one transceiver (206) may be connected to at least one antenna (208), and at least one transceiver (206) may be configured to transmit and receive user data, control information, wireless signals / channels, etc. mentioned in the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in this document via at least one antenna (208). In this document, at least one antenna may be a plurality of physical antennas or a plurality of logical antennas (e.g., antenna ports). At least one transceiver (206) may convert the received wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using at least one processor (202).At least one transceiver (206) may convert user data, control information, wireless signals / channels, etc. processed by at least one processor (202) from a baseband signal to an RF band signal. For this purpose, at least one transceiver (206) may include an (analog) oscillator and / or filter.

[0074] The components of the wireless device described with reference to FIG. 3 may be referred to by different terms in terms of functionality. For example, the processor (202) may be referred to as a control unit, the transceiver (206) as a communication unit, and the memory (204) as a storage unit. In some cases, the communication unit may be used to mean at least a portion of the processor (202) and the transceiver (206).

[0075] The structure of the wireless device described with reference to FIG. 3 can be understood as the structure of at least a portion of various devices. For example, the structure of the wireless device illustrated in FIG. 3 can be at least a portion of various devices described with reference to FIG. 2 (e.g., a robot (110a), a vehicle (110b-1, 110b-2), an XR device (110c), a portable device (110d), a home appliance (110e), an IoT device (110f), an AI device / server (110g)). Furthermore, according to various embodiments, in addition to the components illustrated in FIG. 3, the device may further include other components.

[0076] For example, the device may be a portable device such as a smartphone, a smart pad, a wearable device (e.g., a smart watch, smart glasses), or a portable computer (e.g., a laptop, etc.). In this case, the device may further include at least one of 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 another device (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 a user.

[0077] For example, the device may be a mobile device such as a mobile robot, a vehicle, a train, an aerial vehicle (AV), a ship, etc. In this case, the device may further include at least one of a driving unit including at least one of an engine, a motor, a power train, wheels, brakes, and a steering unit of the device, a power supply unit including a wired / wireless charging circuit, a battery, etc. that supplies power, a sensor unit that senses status information, environmental information, and user information of the device or its surroundings, an autonomous driving unit that performs functions such as path maintenance, speed control, and destination setting, and a position measurement unit that obtains location information of the mobile device through a global positioning system (GPS) and various sensors.

[0078] For example, the device may be an XR device such as an HMD, a head-up display (HUD) installed in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, etc. In this case, the device may further include at least one of a power supply unit that supplies power and includes a wired / wireless charging circuit, a battery, etc., an input / output unit that obtains control information, data, etc. from the outside and outputs the generated XR object, and a sensor unit that senses status information, environmental information, and user information of the device or the surroundings of the device.

[0079] For example, the device may be a robot that can be classified into industrial, medical, household, military, etc. types depending on the purpose or field of use. In this case, the device may further include at least one of a sensor unit that senses status information, environmental information, and user information of the device or its surroundings, and a driving unit that performs various physical actions, such as moving the robot joints.

[0080] For example, the device may be an AI device such as a TV, a projector, a smartphone, a PC, a laptop, a digital broadcasting terminal, a tablet PC, a wearable device, a set-top box (STB), a radio, a washing machine, a refrigerator, digital signage, a robot, a vehicle, etc. In this case, the device may further include at least one of an input unit that acquires various types of data from the outside, an output unit that generates output related to sight, hearing, or touch, a sensor unit that senses status information, environmental information, and user information of the device or its surroundings, and a training unit that trains a model composed of an artificial neural network using learning data.

[0081] The structure of the wireless device illustrated in FIG. 3 may be understood as a part of a terminal (or first node), or as a part of an intermediate point, or as a part of a base station (or second node). If the device illustrated in FIG. 3 is a base station (or second node), the device may further include a wired transceiver for front haul and / or back haul communications. If the front haul and / or back haul communications are based on wireless communications, at least one transceiver (206) illustrated in FIG. 3 may be used for front haul and / or backhaul communications, and a wired transceiver may not be included.

[0082] Communication procedures

[0083] FIG. 4 exemplarily illustrates a communication procedure between a first node and a second node to which some examples of the present disclosure may be applied.

[0084] FIG. 4 illustrates operations of a first node (110) (e.g., a terminal) and a second node (120) (e.g., a base station) transmitting and / or receiving data and operations performed prior thereto.

[0085] In step S101, the first node (110) and the second node (120) can perform synchronization. For example, the terminal (110) performs an initial cell search operation. Specifically, the terminal (110) can detect at least one synchronization signal transmitted from the base station (120) according to a predefined rule. Here, the synchronization signal can include a plurality of synchronization signals (e.g., a primary synchronization signal, a secondary synchronization signal) classified according to a structure or purpose. Through this, the terminal (110) can confirm the boundaries of the frame, subframe, slot, and / or symbol of the base station (120) and obtain information (e.g., a cell identifier) ​​about the base station (120).

[0086] In step S103, the first node (110) can obtain system information transmitted from the second node (120). For example, the system information is information related to the properties, characteristics, and / or capabilities of the base station (120) required to access the base station (120) and use the service, and can be classified according to the content (e.g., whether it is essential for access), transmission structure (e.g., the channel used, whether it is provided in an on-demand manner), etc., and can be classified into, for example, a master information block (MIB) and a system information block (SIB). If necessary, the terminal (110) can transmit a signal requesting system information before receiving the system information. Such requesting and providing of system information may be performed after a random access procedure described below.

[0087] In step S105, the first node (110) and the second node (120) can perform a random access procedure. For example, the terminal (110) can transmit and / or receive at least one message (e.g., a random access preamble, a random access response (RAR) message, etc.) for a random access procedure based on information related to a random access channel of the base station (120) obtained through system information (e.g., channel position, channel structure, structure of a supported preamble, etc.). For example, the terminal (110) may transmit a preamble (e.g., message 1 (MSG1)) over a random access channel, receive a random access response (RAR) message (e.g., message 2 (MSG2)), transmit a message (e.g., message 3 (MSG3)) including information related to the terminal (110) (e.g., identification information) using scheduling information included in the RAR message to the base station (120), and receive a message for contention resolution and / or connection establishment (e.g., message 4 (MSG4)). As another example, MSG1 and MSG3 may be transmitted and received as one message (e.g., message A (MSG A)), or MSG2 and MSG4 may be transmitted and received as one message (e.g., message B (MSG B)).

[0088] In step S107, the first node (110) and the second node (120) can perform signaling of control information. For example, the control information can be defined in various layers, such as a layer that controls a connection (e.g., a radio resource control (RRC) layer), a layer that handles mapping between logical channels and transmission channels (e.g., a media access control (MAC) layer), and a layer that handles physical channels (e.g., a physical (PHY) layer). For example, the terminal (110) and the base station (120) can perform at least one of signaling for establishing a connection, signaling for determining settings related to communication, and signaling for indicating allocated resources.

[0089] In step S109, the first node (110) and the second node (120) can transmit and / or receive data. For example, the terminal (110) and the base station (120) can process, transmit, and / or receive data based on signaling of control information. For example, when transmitting data, the terminal (110) or the base station (120) can perform at least one of channel encoding, rate matching, scrambling, constellation mapping, layer mapping, waveform modulation, antenna mapping, and resource mapping on information bits. For example, when receiving data, the terminal (110) or the base station (120) can perform at least one of signal extraction from resources, waveform demodulation for each antenna, signal arrangement considering layer mapping, constellation demapping, descrambling, and channel decoding.

[0090] 6G system core technologies

[0091] As core implementation technologies of the 6G system, technologies such as artificial intelligence (AI), THz (terahertz) communication, optical wireless technology, free space optics (FSO) backhaul network, massive MIMO (multiple input multiple output) technology, blockchain, 3D networking, quantum communication, unmanned aerial vehicles, cell-free communication, wireless information and energy transfer (WIET), integration of sensing and communication, integration of access backhaul networks, holographic beamforming, big data analysis, and large intelligent surface (LIS) can be adopted.

[0092] artificial intelligence

[0093] Incorporating AI into communications can streamline and improve real-time data transmission. AI can use numerous analytics to determine how complex target tasks should be performed. AI can increase efficiency and reduce processing delays. Time-consuming tasks such as handovers, network selection, and resource scheduling can be performed instantly using AI. AI can also play a crucial role in machine-to-machine (M2M), machine-to-human, and human-to-machine communications. Furthermore, AI can facilitate rapid communication in brain-computer interfaces (BCIs). AI-based communication systems can be supported by metamaterials, intelligent structures, intelligent networks, intelligent devices, intelligent cognitive radios, self-sustaining wireless networks, and machine learning.

[0094] FIG. 5 illustrates a functional framework for AI operations to which some examples of the present disclosure may be applied.

[0095] Below, to explain AI (or AI / ML (machine learning)) in more detail, the terms can be defined as follows.

[0096] - Data collection: Data collected from network nodes, management entities, or terminals as a basis for AI model training, data analysis, and inference.

[0097] - AI model: A data-driven algorithm that applies AI technology to generate a set of outputs containing predictive information and / or decision parameters based on a set of inputs.

[0098] - AI / ML training: An online or offline process of training an AI model by learning features and patterns that best represent the data and obtain a trained AI / ML model for inference.

[0099] - AI / ML inference: The process of making predictions or inducing decisions based on collected data and the AI ​​model using a trained AI model.

[0100] Referring to FIG. 5, the data collection function (10) is a function that collects input data and provides processed input data to the model training function (20) and the model inference function (30).

[0101] Examples of input data may include measurements from terminals or other network entities, feedback from actors, and output from AI models.

[0102] The data collection function (10) performs data preparation based on input data and provides input data processed through the data preparation. Here, the data collection function (10) does not perform data preparation specific to each AI algorithm (e.g., data pre-processing and cleaning, formatting, and transformation), but can perform data preparation common to all AI algorithms.

[0103] After the data preparation process is performed, the data collection function (10) may provide training data (11) to the model training function (20) and may provide inference data (12) to the model inference function (30). Here, the training data (11) may correspond to data required as input for the AI ​​model training function (20), and the inference data (12) may correspond to data required as input for the AI ​​model inference function (30).

[0104] The data collection function (10) may be performed by a single entity (e.g., a terminal, a RAN node, a network node, etc.), but may also be performed by multiple entities. In this case, training data (11) and inference data (12) may be provided to the model training function (20) and model inference function (30), respectively, from multiple entities.

[0105] The model training function (20) may correspond to a function that performs AI model training, validation, and testing, which can generate model performance metrics as part of the AI ​​model testing procedure. If necessary, the model training function (20) may also be responsible for data preparation (e.g., data pre-processing and cleaning, formatting, and transformation, etc.) based on training data (11) provided by the data collection function (10).

[0106] Here, model deployment / update (13) can be used to initially deploy a trained, validated and tested AI model to the model inference function (30) or to provide an updated model to the model inference function (30).

[0107] The model inference function (30) may correspond to a function that provides AI model inference output (16) (e.g., prediction or decision). If applicable, the model inference function (30) may provide model performance feedback (14) to the model training function (20). In addition, the model inference function (30) may also be responsible for data preparation (e.g., data pre-processing and cleaning, formatting and transformation, etc.) based on inference data (12) provided by the data collection function (10), if necessary.

[0108] Here, output (16) refers to the inference output of the AI ​​model generated by the model inference function (30), and the details of the inference output may vary depending on the use case.

[0109] Model performance feedback (14) can be used to monitor the performance of the AI ​​model, if available, and this feedback may be omitted.

[0110] An actor function (40) is a function that receives an output (16) from a model inference function (30) and triggers or performs a corresponding task / action. The actor function (40) can trigger tasks / actions for other entities (e.g., one or more terminals, one or more RAN nodes, one or more network nodes, etc.) or for itself.

[0111] Feedback (15) can be used to derive training data (11), inference data (12), or to monitor the performance of the AI ​​model, its impact on the network, etc.

[0112] Meanwhile, the definitions of training / validation / test in data sets used in AI / ML can be distinguished as follows.

[0113] - Training data: refers to a data set for learning a model.

[0114] - Validation data: This refers to a dataset used to validate a model that has already completed training. Validation data can typically be used to prevent overfitting of the training data set. It can also be used to select the best model among the various models learned during the training process. Therefore, validation can be considered a type of learning.

[0115] - Test data: This refers to the data set for final evaluation. This data is unrelated to learning.

[0116] For example, the training and validation data can be divided into an 8:2 or 7:3 ratio within the entire data set. Alternatively, the training data:validation data:test data can be divided into a 6:2:2 ratio within the entire data set.

[0117] The level of cooperation can be defined as follows depending on whether the base station and the terminal have capabilities for AI / ML functions, and variations due to combination of multiple levels or separation of any one level are also possible.

[0118] Category 0a: This category corresponds to a no-collaboration framework. In this case, AI / ML algorithms are purely implementation-based and may not require any changes to the wireless interface.

[0119] Category 0b: Frameworks that involve a wireless interface modified to fit efficient implementation-based AI / ML algorithms, but without collaboration.

[0120] Category 1: This category applies to cases where inter-node support is required to improve the AI / ML algorithms of each node. For example, this applies when a terminal receives support from a base station (for training, adaptation, etc.), and vice versa. At this level, model exchange between network nodes is not required.

[0121] Category 2: This applies to cases where joint ML tasks can be performed between terminals and base stations. This level requires exchange of AI / ML model commands or network nodes.

[0122] The functions exemplified in FIG. 5 above may be implemented in a RAN node (e.g., a base station, a TRP, a CU of a base station, etc.), a network node, an OAM (operation administration maintenance) of a network operator, or a terminal.

[0123] Alternatively, two or more entities, such as a RAN, a network node, a network operator's OAM, or a terminal, may cooperate to implement the functions illustrated in FIG. 5. For example, one entity may perform some of the functions of FIG. 5, and another entity may perform the remaining functions. In this way, since some of the functions illustrated in FIG. 5 are performed by a single entity (e.g., a terminal, a RAN node, a network node, etc.), the transmission / provision of data / information between each function may be omitted. For example, if the model training function (20) and the model inference function (30) are performed by the same entity, the transmission / provision of model deployment / update (13) and model performance feedback (14) may be omitted.

[0124] Alternatively, any one of the functions illustrated in FIG. 5 may be performed collaboratively by two or more entities, including a RAN, a network node, a network operator's OAM, or a terminal. This may be referred to as a split AI operation.

[0125] FIG. 6 illustrates an example of operations related to AI model training and AI model inference to which some examples of the present disclosure may be applied.

[0126] For example, the AI ​​model training function may be performed by a network node (e.g., a core network node, an OAM of a network operator, etc.), and the AI ​​model inference function may be performed by a RAN node (e.g., a base station, a TRP, a CU of a base station, etc.).

[0127] Step 1: RAN node 1 and RAN node 2 can transmit input data (e.g., training data) for AI model training to the network node. Here, RAN node 1 and RAN node 2 can also transmit data collected from the terminal (e.g., terminal measurements related to RSRP (reference signal received power), RSRQ (reference signal received quality), SINR (signal to interference-plus-noise ratio) of the serving cell and neighboring cells, terminal location, speed, etc.) to the network node.

[0128] Step 2: Network nodes can train AI models using the received training data.

[0129] Step 3: The network node may distribute / update the AI ​​model to RAN node 1 and / or RAN node 2. RAN node 1 (and / or RAN node 2) may also continue model training based on the received AI model.

[0130] For convenience of explanation, we assume that the AI ​​model is deployed / updated only to RAN node 1.

[0131] Step 4: RAN node 1 can receive input data (e.g., inference data) for AI model inference from the terminal and RAN node 2.

[0132] Step 5: RAN node 1 can perform AI model inference using the received inference data to generate output data (e.g., prediction or decision).

[0133] Step 6: If applicable, RAN node 1 may send model performance feedback to the network nodes.

[0134] Step 7: RAN node 1, RAN node 2, and the terminal (or 'RAN node 1 and the terminal', or 'RAN node 1 and RAN node 2') may perform actions based on the output data. For example, in the case of a load balancing operation, the terminal may move from RAN node 1 to RAN node 2.

[0135] Step 8: RAN node 1 and RAN node 2 can transmit feedback information to the network nodes.

[0136] FIG. 7 illustrates another example of operations related to AI model training and AI model inference to which some examples of the present disclosure may be applied.

[0137] For example, both AI model training functions and AI model inference functions can be performed by RAN nodes (e.g., base stations, TRPs, CUs of base stations, etc.).

[0138] Step 1: The terminal and RAN node 2 can transmit input data (e.g., training data) for AI model training to RAN node 1.

[0139] Step 2: RAN node 1 can train an AI model using the received training data.

[0140] Step 3: RAN node 1 can receive input data (e.g., inference data) for AI model inference from the terminal and RAN node 2.

[0141] Step 4: RAN node 1 can perform AI model inference using the received inference data to generate output data (e.g., prediction or decision).

[0142] Step 5: RAN node 1, RAN node 2, and the terminal (or 'RAN node 1 and the terminal', or 'RAN node 1 and RAN node 2') may perform actions based on the output data. For example, in the case of a load balancing operation, the terminal may move from RAN node 1 to RAN node 2.

[0143] Step 6: RAN node 2 may transmit feedback information to RAN node 1.

[0144] FIG. 8 illustrates another example of operations related to AI model training and AI model inference to which some examples of the present disclosure may be applied.

[0145] For example, the AI ​​model training function may be performed by a RAN node (e.g., a base station, a TRP, a CU of a base station, etc.), and the AI ​​model inference function may be performed by a terminal.

[0146] Step 1: The terminal may transmit input data (e.g., training data) for AI model training to the RAN node. Here, the RAN node may collect data (e.g., terminal measurements related to RSRP, RSRQ, SINR of the serving cell and neighboring cells, terminal location, speed, etc.) from various terminals and / or from other RAN nodes.

[0147] Step 2: RAN nodes can train AI models using the received training data.

[0148] Step 3: The RAN node can distribute / update the AI ​​model to the terminal. The terminal can also continue model training based on the received AI model.

[0149] Step 4: Input data (e.g., inference data) for AI model inference can be received from the terminal and RAN node (and / or from another terminal).

[0150] Step 5: The terminal can perform AI model inference using the received inference data to generate output data (e.g., prediction or decision).

[0151] Step 6: If applicable, the terminal may send model performance feedback to the RAN node.

[0152] Step 7: The terminal and RAN node can perform actions based on the output data.

[0153] Step 8: The terminal may transmit feedback information to the RAN node.

[0154] THz communication (terahertz communication)

[0155] Data transmission rates can be increased by increasing bandwidth. This can be achieved by utilizing sub-THz communications with wide bandwidths and applying advanced massive MIMO technology. THz waves, also known as sub-millimeter waves, typically refer to the frequency range between 0.1 THz and 10 THz, with corresponding wavelengths ranging from 0.03 mm to 3 mm. The 100 GHz to 300 GHz band (the sub-THz band) is considered a key part of the THz spectrum for cellular communications. Adding the sub-THz band to the mmWave band will increase 6G cellular capacity. Among the defined THz bands, 300 GHz to 3 THz lies in the far infrared (IR) frequency band. While part of the optical band, the 300 GHz to 3 THz band lies at the boundary of the optical band, immediately following the RF band. Therefore, this 300 GHz to 3 THz band exhibits similarities to RF.

[0156] FIG. 9 illustrates an electromagnetic spectrum to which some examples of the present disclosure may be applied.

[0157] Key characteristics of THz communications include (i) the widely available bandwidth to support very high data rates, and (ii) the high path loss at high frequencies (which necessitates highly directional antennas). The narrow beamwidths generated by highly directional antennas reduce interference. The small wavelength of THz signals allows for a significantly larger number of antenna elements to be integrated into devices and base stations operating in this band. This enables the use of advanced adaptive array technologies to overcome range limitations.

[0158] Transmitting system information (e.g., MIB) in a cell in the THz frequency band can be inefficient because the beam width in high-frequency bands narrows, requiring more beam sweeps to cover the entire cell area. This method is particularly inefficient when there are only a few users within the cell.

[0159] FIG. 10 illustrates an example of a system information transmission / reception procedure to which some examples of the present disclosure may be applied.

[0160] The example of Fig. 10 is applicable not only to THz communication environments but also to 6G communication environments where THz communication is not applicable. Furthermore, the procedure illustrated in Fig. 10 can be combined with various embodiments of the present disclosure described below. For example, the embodiments described below can be performed based on system information acquired through the procedure illustrated in Fig. 10.

[0161] In step S1010, the second node (120) (e.g., base station) can transmit system information of cell #1 via cell #2. For example, the base station provides at least two cells, cell #1 uses a THz frequency band, and cell #2 uses a frequency band other than the THz frequency band. Here, the system information may include at least one of an SFN (system frame number), a PDCCH configuration for SIB1, cell barring, cell re-selection, and subcarrier spacing generated in a higher layer, and may include at least one of an SFN, a half frame indicator, and an SSB index (synchronization signal / PBCH (physical broadcast channel) block index) generated in a physical layer. For this purpose, as an example, cell #1 and cell #2 may have a relationship of a secondary cell and a primary cell.

[0162] At step S1030, the first node (110) (e.g., terminal) can acquire synchronization for cell #1. Synchronization can be acquired by detecting a synchronization signal. Typically, synchronization is acquired before receiving system information, but since the system information for cell #1 is received from cell #2, synchronization acquisition for cell #1 can be performed after receiving the system information. For example, the terminal can acquire synchronization based on the system information. Alternatively, synchronization acquisition can be performed before step S1010.

[0163] At step S1050, the first node (110) may transmit a signal for accessing cell #1. For example, the signal may include a random access preamble. The structure of this signal and the resources (e.g., channels) for transmitting the signal may be identified through system information. Thereafter, at step S1070, the first node (110) and the second node (120) may perform an access procedure for cell #1 and communicate.

[0164] The procedure described with reference to FIG. 10 may be performed when the first node (110) initially connects to cell #1 of the second node (120). Alternatively, a similar procedure may be performed when the first node (110) hands over to cell #1 of the second node (120). However, in the case of handover, the system information of cell #1 may be received from a cell of a base station other than cell #2 of the second node (120).

[0165] Communications in the THz band are expected to experience extremely severe path loss, and to overcome this, terminals and base stations may be required to use very sharp beams. The use of sharp beams means that terminals and base stations must perform beam control in addition to beamforming, and the number of beams used increases significantly. Consequently, it takes a very long time to align the transmit and receive beams between the base station and terminals. Furthermore, if the beam alignment between the base station and terminals is misaligned due to movement or movement of the terminals, frequent re-alignment of the beams may be required, resulting in link instability.

[0166] FIG. 11 exemplarily illustrates a beam management procedure to which some examples of the present disclosure may be applied.

[0167] Although FIG. 11 illustrates an example of a procedure for searching and / or selecting beams for THz communication, this procedure is not limited to a THz environment and can also be applied to a 6G communication environment where THz communication is not applied.

[0168] Here, beam may be interpreted as other terms having equivalent technical meanings that can distinguish beams, such as 'spatial domain filter', 'spatial domain transmit filter', 'spatial domain receive filter', reference signal (RS) resource that distinguishes beams, SSB index, etc.

[0169] In step S1110, the second node (120) (e.g., base station) can set resources for beam management to the first node (110) (e.g., terminal). Here, the resources can include at least one of time-frequency resources, channels, and spatial resources (e.g., antenna ports). For example, the base station can utilize a beam search signal (BSS) that is transmitted spatially separated from an existing downlink signal / channel for beam search. Here, the BSS can be transmitted based on a dedicated port for beam search. The dedicated port can be a different port from a port for transmitting an existing downlink signal / channel (e.g., SSB, PDSCH (physical downlink shared channel), etc.). BSS is a term defined for convenience of explanation, and the technical concept according to the present embodiment is not limited to the term BSS itself. For example, a signal transmitted based on a dedicated port defined / set for beam search can be included in the technical concept according to the present embodiment.

[0170] In step S1130, the second node (120) (e.g., base station) transmits measurement signals using a plurality of transmission beams. For example, the measurement signals may include at least one of a reference signal and a synchronization signal. At this time, the measurement signals may be transmitted as many times as the number of beams that require measurement, and may also be transmitted in a multi-beam transmission method that forms a plurality of beams simultaneously to reduce sweeping time. Here, the multi-beam transmission may be performed based on at least one of a multi-panel, a sub-array, and a true time delay (TTD).

[0171] In step S1050, a first node (110) (e.g., a terminal) may transmit a feedback signal to a second node (120) (e.g., a base station). The feedback signal may indicate at least one beam selected by the terminal. The terminal may select at least one preferred beam based on the measurement signals received in step S1030.

[0172] In step S1070, the first node (110) and the second node (120) can perform communication. For example, the second node (120) can perform transmission to the first node (110) using the reception beam of the first node (110) selected in step S1050. If channel reciprocity is established, the transmission beam of the first node (110) can also be determined through steps S1030 and S1050, so that the transmission operation from the first node (110) can also be performed using a beam that has a reciprocal relationship with the beam selected in step S1050. If channel reciprocity is not established, a procedure including transmission of measurement signal(s) by the first node (110) and transmission of feedback signal(s) by the second node (120) may be performed first to determine the transmission beam of the first node (110).

[0173] non-terrestrial networks (NTN)

[0174] Figures 12 and 13 illustrate examples of NTN scenarios to which some examples of the present disclosure may be applied.

[0175] NTN can represent a network or network segment that uses radio frequency (RF) resources mounted on a satellite (or unmanned aerial system (UAS) platform).

[0176] Figure 12 shows an example of a typical scenario of NTN based on transparent payload, and Figure 13 shows an example of a typical scenario of NTN based on regenerative payload.

[0177] Referring to Figure 12, a satellite (or UAS platform) can establish a service link with a terminal. The satellite (or UAS platform) can be connected to a gateway via a feeder link. The satellite can be connected to a data network via the gateway. The beam footprint can refer to the area where the signal transmitted by the satellite can be received.

[0178] Referring to Figure 13, a satellite (or UAS platform) can establish a service link with a terminal. A satellite (or UAS platform) connected to a terminal can be connected to another satellite (or UAS platform) via an inter-satellite link (ISL). The other satellite (or UAS platform) can be connected to a gateway via a feeder link. Based on the regenerated payload, the satellite can be connected to a data network through another satellite and the gateway. If an ISL does not exist between the satellite and another satellite, a feeder link between the satellite and the gateway may be required.

[0179] Figures 12 and 13 are only examples of NTN scenarios, and NTN can be implemented based on various scenarios. For example, a satellite (or UAS platform) can implement a transparent or regenerative (e.g., with onboard processing) payload. For example, a satellite (or UAS platform) can generate multiple beams across a designated service area depending on the field of view of the satellite (or UAS platform). For example, the field of view of the satellite (or UAS platform) can vary depending on the onboard antenna diagram and the minimum elevation angle.

[0180] For example, a transparent payload may include radio frequency filtering, frequency conversion, and amplification. Therefore, the waveform signal repeated by the payload may remain unchanged.

[0181] For example, a regenerative payload may include radio frequency filtering, frequency conversion and amplification, demodulation / decoding, switching and / or routing, and coding / modulation. For example, a regenerative payload may be substantially equivalent to mounting all or part of a base station function on a satellite (or UAS platform).

[0182] Integrated Sensing and Communication (ISAC)

[0183] Wireless sensing is a technology that uses radio frequencies to determine the instantaneous linear velocity, angle, distance (or range) of an object, and thus obtain information about the characteristics of the environment and / or objects within the environment. Because radio frequency sensing does not require a networked device to connect to the object, it can provide a service for object positioning without a device. The ability to obtain range, velocity, and angle information from radio frequency signals can enable a wide range of new capabilities, such as various object detection, object recognition (e.g., vehicles, humans, animals, UAVs), and high-precision localization, tracking, and activity recognition. Wireless sensing services can provide information to a variety of industries (e.g., drones, smart homes, V2X, factories, railways, public safety, etc.), enabling applications such as intruder detection, assisted vehicle steering and navigation, trajectory tracking, collision avoidance, traffic management, and health and traffic management. In some cases, wireless sensing can utilize non-3GPP type sensors (e.g., radar, cameras) to further support 3GPP-based sensing. For example, the operation of wireless sensing services, such as sensing operations, may depend on the transmission, reflection, and scattering of wireless sensing signals. Therefore, wireless sensing offers an opportunity to enhance existing communication systems from a communications network to a wireless communication and sensing network.

[0184] FIG. 14 illustrates examples of sensing operations to which some examples of the present disclosure may be applied.

[0185] Specifically, Fig. 14(a) shows an example of a monostatic sensing operation using a sensing receiver and a sensing transmitter located in the same location. Fig. 14(b) shows an example of a bistatic sensing operation using a sensing receiver and a sensing transmitter located in separate locations. A sensing signal transmitted from a sensing transmitter is reflected / scattered by a sensing object, and the sensing receiver can receive the signal, and extract / obtain sensing data based on the received signal. A sensing result can be generated / determined through appropriate processing of the sensing data. The sensing result can be provided to a trusted third-party entity / service outside the 3GPP system through an entity / service within the 3GPP system.

[0186] Channel State Information (CSI) Measurement and Reporting

[0187] FIG. 15 illustrates an example of a procedure for CSI measurement and reporting to which some examples of the present disclosure may be applied.

[0188] A second node (120) (e.g., a base station) can transmit configuration information for CSI to a first node (110) (e.g., a terminal). The configuration information for CSI can include information related to a reference signal (e.g., a CSI-RS) resource or a resource set for CSI (e.g., time-frequency resource information, sequence information, power information, etc.), information related to CSI reporting (e.g., report item (quantity) information, report type information, report resource information, codebook information, etc.), information related to CSI measurement, etc.

[0189] For example, to assist the base station with transceiver muting and / or transmit power adaptation of the base station, the terminal may be configured to report multiple CSI entries in a CSI report based on multiple sub-configurations. For example, each sub-configuration may correspond to a spatial domain adaptation pattern (e.g., a subset of available spatial elements) and / or a power offset. With respect to CSI reporting, a higher layer parameter included in the configuration information (e.g., CSI-ReportConfig) may include a list of sub-configurations, and each sub-configuration may be identified by an identifier (e.g., csi-ReportSubConfigID). For example, each sub-configuration may correspond to a list of at least one CSI-RS resource, or may correspond to a subset of CSI-RS antenna ports, and / or may correspond to power-related parameters of the CSI-RS resource(s) (e.g., power control offset-related parameters (e.g., powerControlOffset) and / or power offset for a PDSCH associated with the CSI-RS).

[0190] For example, an information element (IE) for an aperiodic trigger state list for CSI may include a trigger list parameter for a CSI reporting sub-configuration. This parameter may include a list of sub-configuration ID(s) of N sub-configuration(s) among L configured sub-configurations within a CSI reporting configuration that are associated with triggering states for aperiodic CSI reporting on an uplink data channel (e.g., a physical uplink shared channel (PUSCH)).

[0191] For example, an IE for a CSI reporting configuration may include parameters for a list of CSI reporting sub-configuration ID(s) to be added / modified or released. Port subset indicators and a list of non-zero power (NZP) CSI-RS resources may not be configured simultaneously in the same CSI reporting configuration.

[0192] For example, an IE for a CSI reporting sub-configuration may include a port-subset indicator parameter, an NZP CSI-RS resource list parameter, and a power offset parameter.

[0193] The port-subset indicator parameter may indicate the number of ports of the NZP CSI-RS resources indicated in the NZP CSI-RS resource list (the value of which is equal to the number of ports of the corresponding NZP CSI-RS resources) and the (sub)set of CSI-RS antenna ports used for CSI calculation of the sub-configuration. Each bit in the bit string of the port-subset indicator corresponds to an antenna port, and if any bit is set to 1, the corresponding port may be enabled for CSI calculation corresponding to the sub-configuration, and if any bit is set to 0, the corresponding port may not be enabled for CSI calculation corresponding to the sub-configuration.

[0194] The NZP CSI-RS resource list parameter may indicate a list of NZP CSI-RS resources for a sub-configuration, which is a (sub)set of NZP CSI-RS resource(s) of a CSI-RS resource set for channel measurements associated with the sub-configuration of the CSI reporting configuration. The values ​​0, 1, 2, ... may mean the first, second, third, ... NZP CSI-RS resources of the CSI-RS resource set.

[0195] When the power offset parameter is set for an NZP CSI-RS resource, it may indicate that a power offset is applied between a PDSCH RE (resource element) and an NZP CSI-RS RE by the difference in the value of the power offset parameter from the value of the power control offset parameter.

[0196] When a configuration for CSI includes multiple sub-configurations, when interpreting the configuration information for CSI, the terminal may determine CSI-RS resources, CSI-RS port mapping, power offset, codebook type, report items, etc. by considering the sub-configurations. When configuration information related to CSI reporting including sub-configurations (e.g., CSI-ReportConfig) is provided to the terminal, the terminal may not expect that a higher layer parameter related to a report item (e.g., reportQuantity) is 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' (wherein CRI corresponds to a CSI-RS resource index, and tdcp corresponds to time domain channel properties). Additionally, when 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-configurations configured for the UE through MAC-CE (control element) or DCI (downlink control information). For example, the trigger state of aperiodic CSI reporting can be configured as needed, and whether semi-static CSI reporting is activated can be controlled by an activation command.

[0197] For example, with respect to the configuration of a report quantity, the terminal may determine the CSI-RS port index(es) for each CSI-RS resource based on information related to a port subset per sub-configuration (hereinafter referred to as a "port subset indicator"). The port subset indicator may include a bitmap for specifying some of the antenna ports for the corresponding CSI-RS resource. Accordingly, the terminal may identify at least one antenna port for the corresponding sub-configuration based on the positions of bits set to positive values ​​(e.g., 1) in the port subset indicator.

[0198] For example, with respect to the configuration of report items (report quantity), the terminal may determine the codebook type based on the presence or absence of sub-configurations. Specifically, if sub-configurations are configured for CSI reporting, the terminal may exclude the configuration of at least one codebook type. For example, if the terminal's capabilities support it, at least one codebook type may be configured.

[0199] For example, in relation to the configuration of the report quantity, a power offset value and an NZP CSI-RS resource set may be configured for each sub-configuration. For example, depending on whether a power offset value is configured for each sub-configuration and whether an NZP CSI-RS resource set is configured, the interpretation of the NZP CSI-RS resource set for each sub-configuration may vary.

[0200] When determining the channel quality indicator (CQI), a higher-layer parameter related to time restrictions for channel measurements (e.g., timeRestrictionForChannelMeasurements) may be configured. In this case, the terminal can derive a channel estimate for determining CSI based on the most recent CSI reference resource. For example, if cell DTX is activated for the base station, the cell DTX activation time, etc., may be considered to determine the CSI reference resource, etc.

[0201] CSI is derived based on CSI reference resources. A CSI reference resource is defined as a group of downlink physical resource blocks corresponding to a band related to the CSI derived in the frequency domain, and is defined as a single downlink slot determined based on higher-layer parameters and subcarrier spacing in the time domain. After receiving a CSI-RS, a UE can transmit a CSI report no later than the CSI reference resource. For example, if sub-configurations are configured for a CSI report, a CSI reference resource may be considered for each sub-configuration.

[0202] When at least one of a CQI index, a precoding matrix index (PMI), and a rank indicator (RI) is set to be reported, in the CSI reference resource, the terminal may assume specific values ​​for the symbol positions and number occupied by control signaling, the number of PDSCH and demodulation reference signal (DMRS) symbols, the subcarrier spacing of the bandwidth part (BWP), the bandwidth for CQI reporting, the length and subcarrier spacing of the cyclic prefix (CP) of the reference resource, and the redundancy version (RV), for the purpose of deriving at least one of the CQI index, PMI, and RI. At this time, when sub-configurations are set for the CSI reporting, assumptions about the antenna port, EPRE (energy per resource element), etc. may be determined based on the sub-configurations.

[0203] Based on the aforementioned configuration, the base station can transmit at least one CSI-RS to the terminal. Based on the aforementioned configuration, the terminal can receive at least one CSI-RS and perform measurement on it. For example, the at least one CSI-RS can be transmitted via a CSI-RS resource or resource set configured by the configuration information.

[0204] When the terminal is set to DRX (discontinuous reception), the terminal can perform measurements as follows. For example, when 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) has not been started by a higher layer parameter (e.g., ps-TransmitOtherPeriodicCSI), and is set to report CSI using a reporting configuration type set to periodic reporting and a reporting item set to an item other than cri-RSRP and ssb-index-RSRP, the most recent CSI measurement opportunity occurs during the time indicated by drx-onDurationTimer in the DRX related configuration information (e.g., DRX-Config) other than the DRX active time or the DRX active time for the CSI to be reported. As another example, if the terminal is configured to monitor power saving related control information (e.g., DCI format 2_6) and is configured to report L1-RSRP using a report configuration type set to periodic reporting and a report item set to cri-RSRP in a situation where drx-onDurationTimer has not started by a higher layer parameter (e.g., ps-TransmitPeriodicL1-RSRP), the most recent CSI measurement opportunity occurs during a time indicated by drx-onDurationTimer in DRX-related configuration information (e.g., DRX-Config) other than the DRX active time or the DRX active time for the CSI to be reported. In addition, the most recent CSI measurement opportunity occurs within the DRX active time for the CSI to be reported.

[0205] A base station may perform cell DTX and / or cell DRX operations. In this case, during the inactive period of cell DTX, a terminal configured as cell DTX may not expect to receive periodic CSI-RS and semi-static CSI-RS, at least as configured in a CSI reporting configuration associated with a report item including RI. When cell DTX is activated for a serving cell, the most recent CSI measurement opportunity of a semi-static CSI-RS resource or a periodic CSI-RS resource may occur within the active periods of cell DTX for CSI reporting, at least as configured by configuration information (e.g., CSI-ReportConfig) related to CSI reporting associated with a report item including RI.

[0206] A terminal that receives at least one CSI-RS can determine CSI. For example, the terminal can perform CSI calculations. The terminal can perform CSI calculations based on CSI processing criteria. The terminal can indicate the number of supported concurrent CSI calculations, for example, the number of CSI processing units (CPUs) that can be performed simultaneously, called NCPUs. The terminal can determine the number of CPUs for a given CSI report based on at least one of the NCPUs, the number of CPUs for each CSI report, the number of CPUs currently occupied, and the settings of the report items. For example, for configuration information (e.g., CSI-ReportConfig) related to CSI reporting that includes a report item parameter (e.g., reportQuantity) that is not set to 'none', the CPU(s) may be occupied for at least one orthogonal frequency division multiplexing (OFDM) symbol, wherein the number of at least one symbol may be determined based on CSI-RS resources or CSI-IM (interference measurement) resources associated with the sub-configurations.

[0207] When configuration information related to CSI reporting (e.g., CSI-ReportConfig) includes multiple sub-configurations, the number of CPUs occupied by the CSI report may be determined based on the number of CSI-RS resources corresponding to the sub-configurations. For example, the number of CSI-RS resources may be determined based on the number of times they are referred in the configuration information related to CSI reporting (e.g., CSI-ReportConfig) or the number of sub-configurations referencing the corresponding CSI-RS resources.

[0208] A terminal that has determined CSI can transmit a CSI report to a base station. The terminal can transmit CSI(s) for at least one sub-configuration according to a report item parameter (e.g., reportQuantity) configured for configuration information related to the CSI report (e.g., CSI-ReportConfig). For example, the CSI report can include at least one of PMI, CQI, RI, CRI (CSI-RS resource indicator), SSBRI (SSB resource index), LI (layer indicator), and RSRP. In this case, the CSI report can include a Part 1 CSI report and a Part 2 CSI report. In addition, the CSI report can be transmitted through at least one of a physical uplink control channel (PUCCH) or a PUSCH.

[0209] When a terminal multiplexes a CSI report including a Part 2 CSI report on a PUCCH resource, the terminal determines the number of PUCCH resources and physical resource blocks (PRBs) for the PUCCH resource or the number of Part 2 CSI reports, assuming that each CSI report or each CSI sub-report included in the CSI report indicates rank 1 or the rank combination {1, 1}. When a higher layer parameter related to the CSI reporting mode (e.g., csi-ReportMode) is set to 'Mode2', the terminal determines the PUCCH resource and the number of PRBs for the PUCCH resource or the number of Part 2 CSI reports, assuming that each CRI of the CSI report is associated with a resource pair.

[0210] When a CSI report on PUSCH includes two parts, the UE may omit some of the Part 2 CSI. The omission of Part 2 CSI is in priority order. When omitting Part 2 CSI information for a particular priority level, the UE shall exclude all information for that priority level, except when the corresponding CSI report includes at least one CSI sub-report including Part 2, which corresponds to a sub-configuration from a list of sub-configurations provided by a higher layer parameter (e.g., csi-ReportSubConfigList) included in information related to the CSI report (e.g., CSI-ReportConfig).

[0211] For a report configuration related to information related to a CSI report (e.g., CSI-ReportConfig) that includes a list of sub-configurations, the following processing is possible: For a corresponding CSI report that includes at least one CSI sub-report, omission of Part 2 CSI is performed at the sub-configuration level within the same priority level, where a sub-configuration with a lower index value has a higher priority.

[0212] If a CSI report consists of two parts, a UE may omit some of the Part 2 CSI. The omission of Part 2 CSI is based on a priority order. For a report configuration related to information related to a CSI report (e.g., CSI-ReportConfig) that includes a list of sub-configurations, for a given CSI report that includes at least one CSI sub-report, the omission of Part 2 CSI may be applied according to the CSI reporting procedure using PUSCH. Part 2 CSI may be omitted starting from the lowest priority level up to the Part 2 CSI coding rate that is less than or equal to the coding rate set by the higher layer parameter (e.g., maxCodeRate).

[0213] Additionally, if the CQI request (or CSI request) field in the DCI triggers CSI report(s) on the PUSCH, the first uplink symbol carrying the CSI report(s) may not precede a symbol specified after a certain interval from the last symbol of the PDCCH carrying the corresponding DCI. Accordingly, the CSI calculation time may be guaranteed. For example, if multiple sub-configurations are configured for the CSI report, the starting position of the aforementioned certain interval may be determined based on all triggered sub-configurations.

[0214] CSI is transmitted via PUCCH or PUSCH and can be expressed as a bit string of a fixed size. When CSI is transmitted via PUCCH, if a parameter (e.g., csi-ReportSubConfig) indicating sub-configuration-specific settings for CSI reports is configured, the mapping order of CSI fields for each CSI sub-report can be applied according to predefined rules.

[0215] When CSI is transmitted via PUSCH, if a parameter indicating sub-configuration-specific configuration for CSI reporting (e.g., csi-ReportSubConfig) is set, for each CSI sub-report, the mapping order of CSI fields can be applied according to a predefined rule.

[0216] Some or all of the examples of FIGS. 1 to 15 described above may be combined with some or all of the examples of the present disclosure described below, and such combined examples are included within the scope of the present disclosure.

[0217] Procedure for controlling and setting the transmission operation of RS and / or CSI

[0218] In describing the present disclosure, " / " means "and", "or", or "and / or" depending on the context. In addition, "beam" in the present disclosure may mean a source RS for a "spatial filter" or a "spatial relationship", and may be interpreted as a QCL (type-D) RS, a (DL / UL / joint) TCI (transmission configuration indicator) state, or (in the case of uplink) a spatial relationship RS.

[0219] As wireless communication systems improve, various CSI measurement / reporting methods may be supported, and for this purpose, various forms / operations related to RS transmission (e.g., CSI-RS, SRS, etc.) and CSI reporting may be supported. For example, the reporting method of RS and / or CSI may be set / indicated to at least one of a periodic (P) transmission method, a semi-persistent (SP) transmission method, and an aperiodic (AP) transmission method.

[0220] The above-described RS transmission and / or CSI reporting operations can be supported in various combinations. The RS transmission and / or CSI reporting operations of the base station / terminal can be flexibly triggered while considering / adjusting the related resource overhead depending on the base station / terminal situation (e.g., terminal mobility, traffic load situation, resource overhead, battery / power consumption, etc.) and the type / need of related CSI information.

[0221] Meanwhile, in network environments where channel conditions can change significantly due to factors such as the movement of terminals or surrounding objects, it may be difficult for the network to immediately recognize these changes. Consequently, terminals are forced to frequently report RS and / or CSI to the network. For example, the reporting cycles for P / SP CSI-RS and CSI may need to be shortened and / or triggered. Another example is that AP CSI reporting may need to be triggered frequently. This may result in issues such as DL / UL resource overhead, terminal measurement / computation overhead, and increased battery consumption.

[0222] In systems using high-frequency bands, channel changes can become more severe due to terminal movement, which can exacerbate this issue. This issue can also arise during beam measurement / reporting procedures. That is, to prepare for sudden changes in a terminal's channel, the base station may need to frequently transmit beam RSs to the terminal, and the terminal may need to perform beam reporting procedures more frequently.

[0223] To address the above-mentioned issues, an improved wireless communication system allows a base station to more easily identify a terminal's channel fluctuations based on the terminal's time domain channel property (TDCP) reports. However, this method also suffers from the drawback that the base station can only detect channel fluctuations if the terminal frequently reports TDCP. Furthermore, separate reporting / RS configuration / instruction and implementation are required for TDCP reporting.

[0224] For example, in an improved wireless communication system, a multi-shot (MS) transmission scheme may be adopted, which continuously transmits CSI-RS at one or more symbol intervals for TDCP reporting. Additionally or alternatively, terminal-initiated beam reporting may be adopted, whereby beam reporting is performed when necessary (e.g., when a new beam is discovered).

[0225] However, the above-described method is not considered for extension to the general CSI reporting procedure. Since the trigger (or reporting) of the terminal-initiated reporting procedure is determined by the terminal, there is a problem that separate reporting / RS configuration / instruction is required when the base station requires reception of CSI / beam reports. Furthermore, depending on the terminal implementation, if CSI / beam reporting is required, there is a risk of malfunction of the above-described procedure.

[0226] The above-described methods had a problem in that they required separate RS / report settings depending on the transmission type / cycle / offset of the RS / report.

[0227] For example, if a base station wants to trigger "P CSI-RS + P CSI", "P CSI-RS + AP CSI", "SP CSI-RS + SP CSI", and "AP CSI-RS + AP CSI" transmission procedure(s) appropriately for the same CSI or beam report content, four CSI configurations may be required. As another example, if a base station wants to transmit CSI-RSs with the same number of ports and resource mapping (e.g., RE positions, CDM / OCC patterns, etc.), scrambling, and power control offsets with different transmission periods or slot offsets, separate CSI-RS resource configurations (and / or ID configurations) for the corresponding periods / offsets may be required. As another example, if a base station wants to aperiodically change / trigger the transmission method of an SRS with the same number of ports and resource mapping while periodically transmitting the SRS, a procedure to separately configure P SRS resources and AP SRS resources for the UE may be required. Accordingly, there is a problem that the amount of RRC configuration information is very large within the basic wireless communication system.

[0228] In addition, there is a problem in that separate trigger mechanisms are applied depending on the transmission type in basic wireless communication systems. For example, in a basic wireless communication system, P CSI-RS and CSI reporting are configured / triggered by RRC, SP CSI-RS and CSI reporting on PUCCH are (de)activated / triggered by MAC-CE, and AP CSI-RS, AP CSI reporting, and CSI reporting on PUSCH can be triggered / (de)activated / instructed by DCI. Here, since RRC, MAC-CE, and DCI are each transmitted by different layer signaling and have different activation timings, the above-described method may complicate resource allocation and scheduler implementation of the base station.

[0229] Additionally, unlike P / SP CSI-RS in basic wireless communication systems, AP CSI-RS can only be triggered via AP CSI reporting. Consequently, when transmission of only AP CSI-RS is required (e.g., TRS transmission, UE reception beam refinement), a CSI report with a report quantity of "none" is unnecessarily set / triggered.

[0230] Below, we will specifically describe methods and parameters for solving the problems of the measurement / reporting signaling framework of the above-described basic wireless communication system.

[0231] FIG. 16 is a flowchart illustrating a method for a terminal to perform a communication procedure according to one embodiment of the present disclosure.

[0232] The terminal can receive first configuration information related to at least one reference signal (RS) from the base station (S1610).

[0233] As an example of the present disclosure, before step S1610, the terminal may transmit terminal capability information to the base station. The terminal capability information may include at least one RS supported by the terminal and / or information / methods related to reporting information for the at least one RS. As an example, the terminal capability information may include a transmission / reception operation and / or a transmission / reception count of at least one RS supported by the terminal. The first configuration information that the terminal receives from the base station may be based on, but is not limited to, the terminal capability information.

[0234] For example, the first configuration information may include at least one of resource information of at least one RS (e.g., resource information for transmission and reception of at least one RS) or resource information for reporting on resources of at least one RS (e.g., resources for performing reporting on at least one RS).

[0235] In describing the present disclosure, a report for at least one RS may include a report of a measurement result of at least one RS, a report of ACK / NACK information for at least one RS, transmission of information requested / triggered / scheduled by at least one RS, etc.

[0236] In addition, the first configuration information can be transmitted from the base station to the terminal via upper layer signaling (e.g., SIB, RRC message, etc.). The terminal can receive at least one RS from the base station based on the first configuration information.

[0237] The terminal can receive first control information from the base station, which includes at least one of i) information on a transmission operation of report information for at least one RS or ii) information on a transmission time of report information (S1620).

[0238] That is, various methods / parameters (e.g., method of transmission operation or / and transmission time / point) for transmitting report information for at least one RS can be dynamically instructed to the terminal (via first control information).

[0239] Hereinafter, a case is described in which the first control information indicates a method / parameter related to reporting for at least one RS, but is not limited thereto. The method of transmission operation and / or transmission time / point described with reference to FIGS. 16 and 17 may also be applied to transmission and reception of at least one RS. That is, the terminal may receive from the base station first control information including at least one of i) information on transmission and reception operation of at least one RS or ii) information on transmission and reception time of at least one RS.

[0240] As an example of the present disclosure, information about a transmission operation of report information may include at least one of a number of times (M) of transmission of report information, information related to triggering, activating, or deactivating transmission of report information, and a transmission type of report information. Here, the transmission type of report information may include at least one of an aperiodic transmission type, a periodic transmission type, a semi-persistent transmission type, or an N-time transmission (e.g., N-shot transmission) type. In addition, information about a transmission time of report information may include at least one of a transmission period, a transmission interval, and an offset of report information.

[0241] Here, the first control information can be transmitted to the terminal via downlink control information (DCI) or a medium access control (MAC) control element (CE). That is, the terminal can dynamically receive the first control information from the base station via DCI and / or MAC-CE.

[0242] The terminal can transmit report information to the base station based on the first control information (S1630).

[0243] That is, the terminal can transmit report information for at least one RS to the base station based on information about the transmission operation and / or transmission time dynamically indicated by the first control information. If the first control information relates to the transmission / reception operation / time of at least one RS, the terminal can perform the transmission / reception operation of at least one RS based on the first control information.

[0244] For example, based on the fact that information related to activation of transmission of report information is included in the first control information (e.g., information on transmission operation of report information), the terminal can (continuously) perform transmission of report information until second control information including information related to deactivation of transmission of report information is received from the base station.

[0245] For example, triggering / activating / deactivating the transmission of report information may be indicated based on the value of the number of transmissions (M) of the report information. Based on the M value being set to 0, the transmission of the report information may be deactivated. Based on the M value being set to 1 or greater (and / or less than or equal to the maximum value), the report information may be transmitted to the Mth base station. That is, when the M value is greater than or equal to 1 and less than or equal to the maximum value, the Mth transmission of the report information may be triggered. Based on the M value being set to a parameter related to null or unlimited, the transmission of the report information may be activated. That is, the terminal may (continuously) perform the transmission of the report information until the second control information including information related to the deactivation of the transmission of the report information is received from the base station.

[0246] As another example of the present disclosure, before the first configuration information is transmitted and the first control information is transmitted and / or when a condition related to transmission of the report information is satisfied, the terminal may transmit report information for at least one RS to the base station based on a default transmission operation and / or a default transmission time.

[0247] Here, the conditions related to transmission of the report information may include at least one of conditions related to expiration of a timer related to the report information (e.g., expiration of a timer started after receiving the first configuration information and / or at least one RS), conditions related to activation of a bandwidth part (BWP) related to transmission of the report information, and conditions related to mobility of the terminal (e.g., conditions according to RLM, etc.).

[0248] Additionally, the default transmission operation and default transmission time may be defined differently for each RS type or may be set by the base station. The terminal may perform a reporting operation according to the default transmission operation / time defined in advance or set by the base station.

[0249] The method described in the example of FIG. 16 can be performed by the first device (100) of FIG. 3. For example, one or more processors (102) of the first device (100) of FIG. 3 can receive first configuration information related to at least one RS from a base station through one or more transceivers (106). The one or more processors (102) can receive first control information from the base station through one or more transceivers (106), which includes at least one of i) information on a transmission operation of report information for at least one RS or ii) information on a transmission time of the report information. The one or more processors (102) can transmit the report information to the base station through one or more transceivers (106) based on the first control information.

[0250] Furthermore, one or more memories (104) of the first device (100) may store commands for performing the method described in the example of FIG. 16 or the examples described below when executed by one or more processors (102).

[0251] FIG. 17 is a flowchart illustrating a method for a base station to perform a communication procedure according to one embodiment of the present disclosure.

[0252] The base station can transmit first configuration information related to at least one RS to the base station (S1710).

[0253] Specifically, the base station may receive terminal capability information from the terminal related to at least one RS transmission and reception supported by the terminal and / or transmission and reception of report information of at least one RS. The base station may transmit first configuration information to the terminal based on the terminal capability information.

[0254] The base station may transmit to the terminal first control information including at least one of i) information on the transmission operation of report information for at least one RS or ii) information on the transmission time of the report information (S1720). That is, the base station may dynamically instruct the terminal on the method and / or time related to transmission of report information for at least one RS.

[0255] The base station can receive report information from the terminal based on the first control information (S1730). The operation of transmitting and receiving report information based on the first control information has been described with reference to FIG. 16, so a redundant description will be omitted.

[0256] The method described in the example of FIG. 17 can be performed by the second device (200) of FIG. 3. For example, one or more processors (202) of the second device (200) of FIG. 3 can transmit first configuration information related to at least one RS to a base station via one or more transceivers (206). The one or more processors (202) can transmit first control information including at least one of i) information on a transmission operation of report information for at least one RS or ii) information on a transmission time of the report information to a terminal via one or more transceivers (206). The one or more processors (202) can receive report information from the terminal via one or more transceivers (206) based on the first control information.

[0257] Furthermore, one or more memories (204) of the second device (200) may store commands for performing the method described in the example of FIG. 17 or the examples described below when executed by one or more processors (202).

[0258] Hereinafter, a method for controlling the transmission operation and / or timing of multiple RS resource(s) and / or report(s) will be specifically described.

[0259] Example 1

[0260] Embodiment 1 relates to a method for controlling / adjusting transmission operations and / or transmission timings for one or more RS resources and / or reports through dynamic instructions of a base station (e.g., DCI / MAC-CE, etc.).

[0261] In describing the present disclosure, control / adjustment of transmission operations may include control of transmission triggers / (de)activation and / or control / adjustment of the number / type of transmissions. In addition, control / adjustment of transmission timing may include operations for controlling / adjusting transmission cycles / intervals / offsets, etc. The RS / report(s) according to the present disclosure may be RS / reports associated with the same or different CCs / BWPs.

[0262] For example, dynamic "indication" of transmission operation and / or transmission timing may be performed via one or more indicators (or / and information fields). For example, the indicator(s) may be defined per function (e.g., transmission operation / timing control, etc.) or per sub-function within the function, and the indicator(s) may be transmitted from the base station to the terminal via a single DCI / MAC-CE. Additionally or alternatively, a single indicator that integrates all supported functions may be transmitted to the terminal (via DCI / MAC-CE).

[0263] As an example of the present disclosure, the transmission operation control may support a transmission triggering operation, a transmission activation operation, and a transmission deactivation operation.

[0264] As an example of the present disclosure, transmission triggering may include an operation of triggering transmissions M times (M is a natural number greater than or equal to 1) (hereinafter, M-shot triggering). That is, M-shot triggering may include an operation of terminating transmissions after M transmissions at specific transmission intervals. When M-shot triggering is applied, a constant interval may be maintained for each transmission (e.g., the interval between the first and second transmissions is the same as the interval between the second and third transmissions), or different intervals may be defined / set / instructed for each transmission (e.g., the interval between the first and second transmissions is different from the interval between the second and third transmissions).

[0265] For this purpose, one or more period value(s) and / or interval value(s) may be set / defined. For example, an interval value / period value for the period between odd-numbered transmissions and even-numbered transmissions and an interval value / period value for the period between even-numbered transmissions and odd-numbered transmissions may be set / defined / indicated, respectively.

[0266] As another example, an M-shot triggering procedure may be applied, such as in (a), (b) and / or (c) of FIG. 18. For example, as illustrated in (c) of FIG. 18, a transmission operation may be performed (continuously) M1 times with a small period (P1), and such M1-shot transmission may be repeatedly performed M2 times with a longer period (P2). In this case, in the triggered transmission, the transmission time point (e.g., interval / period / offset), the number of transmissions (e.g., M value, M1 value and / or M2 value), etc. may be predefined or may be set / instructed in advance / separately by the base station. As another example, the transmission time point and / or the number of transmissions may be instructed to the terminal together with the trigger instruction.

[0267] For example, when the value of M is 1, the M-shot AP transmission procedure may include the same behavior as a single aperiodic transmission (e.g., AP CSI-RS, AP CSI reporting, and AP SRS, etc.).

[0268] In one example of the present disclosure, transmission activation may include activation of a preset RS / report transmission operation. That is, transmission activation may mean to continue transmitting the corresponding RS / report until a separate deactivation instruction is given. Here, similar to transmission triggering, one or more period value(s) / interval value(s) may be set / defined for the RS / report transmission interval. For example, a period value / interval value P1 (e.g., several to several tens of symbols) between M1 transmissions included in one burst and a period value / interval value P2 between bursts (e.g., several to several tens of symbols) may be set / defined / indicated, respectively. In this case, the transmission operation may be configured as in (b) of FIG. 19, but is not limited thereto, and P1 may be greater than P2.

[0269] As an example, (a) of FIG. 19 illustrates a procedure for the case where “M1 = 1”, and the procedure may include the same operation as a semi-static (e.g., SP CSI-RS, SP CSI report, SRS, etc.) transmission operation.

[0270] In Fig. 19, the P2 value may indicate a transmission cycle for SP transmission. For activated transmission, the transmission time (e.g., interval, period, and / or offset) and / or the number of transmissions (e.g., M value, M1 value, and / or M2 value) may be predefined or may be set / indicated in advance / separately by the base station. As another example, the transmission time and / or the number of transmissions may be indicated to the terminal together with a trigger indication.

[0271] As an example of the present disclosure, disabling transmission may mean stopping transmission for an activated / triggered transmission.

[0272] In describing the present disclosure, the term "number of transmissions" may refer to M values, M1 values, M2 values, etc. for various transmission types mentioned in relation to transmission triggering / activation. In addition, control over the "transmission type" refers to control over various transmission types such as aperiodic, multi-shot, semi-static, periodic, etc. Control over the number / type of transmissions may be performed together with control over transmission operations (e.g., triggering / activating / deactivating).

[0273] Example 1-1

[0274] Embodiment 1-1 relates to the instruction information of Embodiment 1 and a procedure based thereon. The instruction information of Embodiment 1 may include at least "value(s) related to the number of transmissions." When a finite natural number greater than or equal to 1 (e.g., a natural number less than or equal to a specific value) is indicated as "value(s) related to the number of transmissions," the "value(s) related to the number of transmissions" may mean (continuous) numbers of transmissions (e.g., the M value, the M1 value, and the M2 value of Embodiment 1).

[0275] Additionally, "value(s) associated with the number of transmissions" may be 0, which may indicate a stop of transmission (e.g., disable transmission). "value(s) associated with the number of transmissions" may be or indicate a value that is not a finite natural number (e.g., unlimited / null value) or a very / largest value. This may indicate / mean that transmission operations are to continue (e.g., enable transmission) until a separate transmission is disabled.

[0276] Based on the definitions and / or methods described above, the value(s) related to the number of transmissions may be indicated, and accordingly, various transmission operations may be indicated / controlled / adjusted according to the options described below:

[0277] Option #1: Procedure for specifying a value of N related to the number of transmissions

[0278] - If the N value is 0, this may mean transmission is disabled;

[0279] - If the N value is 1, this may mean a 1-shot transmission trigger;

[0280] - If 1 < N ≤ N_max, this may mean an N-shot transmission trigger (e.g., the method illustrated in Fig. 18). For example, if a method such as (c) of Fig. 18 is applied, the N value may correspond to the M1 value, the M2 value, or the M value, and values ​​not indicated by N may be defined / set / indicated separately;

[0281] - N = Unlimited: This may mean activation of 1-shot periodic transmission (e.g., the method illustrated in (a) of FIG. 19). As another example, this may mean activation of M1-shot transmission (e.g., the method illustrated in (b) of FIG. 19) or activation of other forms of transmission, wherein the M1 value, period / interval, etc. may be predefined / set / indicated prior to the above instruction. As another example, N may be set / defined / indicated as a parameter / value indicating “unlimited”, or may be set / indicated to a specific large value.

[0282] Option #2: Procedure for specifying N1 values ​​(e.g., number of shots in a burst) and N2 values ​​(e.g., number of bursts) related to the number of transmissions.

[0283] - N1=0 and / or N2=0: This may mean transmission is disabled.

[0284] - N1 1 and N2 1: This could mean a multi-shot transmission trigger:

[0285] -- N1=1 and N2=1: This may mean (1-shot) aperiodic transmission trigger;

[0286] -- N1=1 and N2>1: This may mean that the transmission procedure according to (b) of Fig. 18 is applied;

[0287] -- N1>1 and N2=1: This may mean that the transmission procedure according to (a) of Fig. 18 is applied;

[0288] -- N1>1 and N2>1: This may mean that the transmission procedure according to (c) of Fig. 18 is applied (e.g., N1= M1, N2= M2);

[0289] - N1 1 and N2=Unlimited: This could mean that N1-shot transmission is enabled:

[0290] -- N1=1: This may mean that the transmission procedure (e.g., SP transmission) according to (a) of Fig. 19 is applied;

[0291] -- N1>1: This may mean that the transmission procedure according to (b) of Fig. 19 is applied.

[0292] "Transmission timing control / adjustment" in Example 1 means adjusting the transmission timing(s) by adjusting the period / interval / offset, etc. for activated / triggered (or activated / triggered) transmission. Here, time-related information such as transmission interval, period, offset, etc. can be expressed in units of symbols, slots, subframes, and msecs.

[0293] For example, multiple candidate values ​​for each of period / interval / offset can be set for the terminal via a higher layer message (e.g., an RRC message), and the value(s) to be actually applied among the multiple candidate values ​​can be indicated to the terminal via a message including an instruction (e.g., DCI and / or MAC-CE). Accordingly, the period / interval / offset value(s) of the terminal can be changed / set / instructed via a message transmitted from the base station.

[0294] As another example, the period / interval / offset values ​​may not be set for the terminal via a higher layer message, but the actual applicable value(s) may be indicated to the terminal via a message containing the above instructions (e.g., DCI / MAC-CE). That is, the period / offset values ​​to be applied to the terminal may be indicated / changed via a message containing the above instructions.

[0295] Here, the offset may mean the offset from a specific reference point to the (first) transmission. The reference point may be the point in time when the instruction is transmitted or received, or a specific reference point (e.g., the nth sub-frame, slot, symbol, etc.). Candidate value(s) of the transmission period / point information may be separately set / defined for each RS / report (group) or type (e.g., by report content, resource / channel type). When a common indicator related to the transmission period / point is used, the period / interval / offset value signified by the same code point may be interpreted differently for each RS / report (group / type). For example, when the code point value is "00", the offset value A may be indicated for RS#1, but the offset value B may be indicated for RS#2.

[0296] Among the instructions for the above transmission timing, the values ​​for the period / interval may be interpreted differently as M, M1, and / or M2, depending on the various transmission forms exemplified in FIGS. 18 and 19. For example, when a burst-based transmission procedure such as (a) and (c) of FIG. 18 or (b) of FIG. 19 is applied, the values ​​for the period / interval may mean the interval between transmissions within the burst (e.g., P1). However, in the case of periodic transmission such as (b) of FIG. 18 or (a) of FIG. 19, the values ​​for the period / interval may mean p2.

[0297] That is, one information field value can be interpreted / corresponded to different meanings, such as P1 or P2 values, depending on the transmission format. It is not necessary to transmit only one value for the transmission period / interval, and multiple transmission period / interval values ​​can be indicated to the terminal. For example, when a transmission operation such as (c) of FIG. 18 or / and (b) of FIG. 19 is applied, each of the P1 value and the P2 value can be indicated to the terminal. As another example, only some of the multiple transmission period / interval values ​​can be indicated according to the above-described indication method, and the remaining values ​​can be separately specified / set / indicated.

[0298] For example, as illustrated in FIG. 20, an operation related to an instruction of the present disclosure may be defined to be applied / performed from "the time point at which the instruction of the base station (e.g., an instruction related to transmission / period) is transmitted / received + delta time point" or "the time point at which the terminal transmits an ACK for the instruction of the base station (e.g., HARQ-ACK for PDSCH carrying MAC-CE, ACK for DCI, etc.) + delta time point." At this time, the delta value may be a specified value (e.g., several msec or 0, etc.) or may be set by the base station.

[0299] Additionally or alternatively, terminal capability information regarding the corresponding delta value may be transmitted from the terminal to the base station. The delta values ​​associated with the above time point and / or period may be defined / configured differently depending on the type / group of RS / report, the applied action (e.g., period adjustment, triggering, (de)activation), etc.

[0300] In applying the above-described method, control / adjustment of transmission trigger / activation / deactivation and control / adjustment of transmission timing may be performed together or separately. In addition, control / adjustment of transmission operation / timing may be indicated to the terminal together with ID(s) related to the RS / report that is the target of trigger / activation / deactivation and / or the RS / report that is the target of transmission timing adjustment. Here, the ID may be expressed as an RS resource ID, an RS resource set / group ID, a report ID, etc.

[0301] Instructions related to control / adjustment of transmission operation / timing can be performed separately for each RS / channel / action targeted, such as DL RS, UL RS, and report, but can also be performed together. That is, instructions for control / adjustment of transmission operation / timing for one or more RS / reports can be performed through a single instruction or directive (e.g., through joint encoding).

[0302] For example, the transmission action / timing for a report may be indicated to the terminal along with the transmission action / timing for the measurement RS(s) associated with the report. In this case, both the associated report and the associated RS(s) may be indicated, even if only one of them is indicated. For example, if a report ID is indicated to the terminal, the set of measurement RSs associated with the report ID may also be indicated to the terminal.

[0303] For example, when controlling the transmission behavior for a report and the measurement RS for that report, certain types of instructions may be excluded. For example, the following instructions may be excluded from the instruction configuration or the terminal may not expect them:

[0304] - Instructions to trigger / enable reporting for that RS while disabling the RS; and

[0305] - Instruction to trigger / enable reporting for RS that is inactive.

[0306] As an example of the present disclosure, in Embodiment 1, if information about a transmission operation and / or transmission timing is not indicated to the terminal and / or the transmission operation / timing may be ambiguous under certain conditions (e.g., timer expiration, BWP / CC (in)activity, RRM / RLM / mobility conditions, etc.). As an example, after configuring a certain RS / report for the terminal, it may be necessary to define whether transmission / reception for the RS / report should be performed before an activation / trigger indication is given.

[0307] For example, when a CC / BWP related to a specific RS is activated, it may be efficient to transmit and receive RSs (e.g., RSs for time / frequency tracking, signals related to synchronization / system information) such as periodic CSI-RS / SSB / SRS. Conversely, when a CC / BWP is deactivated, it may be efficient to deactivate the corresponding RS / reports (related to the CC / BWP) without a separate deactivation instruction. As another example, when a UE moves from a specific cell / TRP to another cell / TRP, it may be efficient to deactivate the RS / reports for the cell / TRP before the movement and activate the RS / reports for the cell / TRP after the movement, without a separate instruction. As another example, in a situation where the communication quality of a specific cell / CC / TRP is poor, such as in a radio link failure (RLF) or beam failure recovery (BFR), it may be efficient to deactivate RS / report transmission and reception related to the cell / CC / TRP without a separate instruction, and to activate RS / report transmission and reception when the quality of the communication link is restored (e.g., in-sync situation related to RLF, link re-establishment with a new beam for BFR).

[0308] When the above-described examples apply and RS / reports are activated without separate instructions, an agreement on the transmission timing (e.g., period / offset, etc.) for the RS / reports may be required between the base station and the terminal. Even when adjusting the transmission period / interval / offset of the RS / reports activated / triggered by the dynamic instructions of Example 1, default period / interval / offset values ​​to be applied to the above-described examples may need to be defined / set.

[0309] Example 1-2

[0310] Embodiments 1-2 relate to a method for defining / setting a default transmission operation and / or a default transmission timing to be used before an instruction related to transmission operation / timing control in Embodiment 1 is made or under specific conditions. Here, the specific conditions may include BWP / CC (de)activation, RRM / RLM / mobility / BF (beam failure)-related conditions, cell / TRP update / (de)activation, etc.

[0311] For example, the default transmission behavior may be transmission enabled or disabled, and the default behavior may be defined / set differently depending on the RS / report condition / case. Furthermore, the default transmission timing (e.g., period / interval / offset) may be a standardized value (e.g., a value defined per subcarrier interval) or a value set by a higher layer message. In this case, the default transmission timing may be defined / set to different values ​​depending on the RS / report and the condition / case.

[0312] As an example of the present disclosure, Embodiment 1-2 may be applied only to specific RS / report(s) that are stipulated / configured. For example, if the above-described default transmission operation / time is set for the terminal by the base station through a higher layer message (e.g., an RRC message) and then the transmission operation / time is indicated to the terminal through a lower layer message (e.g., DCI or / and MAC-CE, etc.), the terminal may ignore the default transmission operation / time set through the higher layer message and operate based on the indication of the lower layer message.

[0313] Additionally or alternatively, multiple (candidate) actions / value(s) related to transmission actions / time points may be set for the terminal via upper layer messages. In this case, a default transmission action and / or a default transmission time point may also be set for the terminal together with the multiple (candidate) actions / value(s). Additionally or alternatively, at least one of the multiple (candidate) actions / value(s) may be designated / set as the default transmission action and / or default transmission time point.

[0314] At this time, the default operation / value may be applied before an instruction (e.g., an instruction regarding a transmission operation / timing) is performed via a lower layer message or under certain conditions. If the instruction is performed, the base station may instruct the terminal via a lower layer message which of the multiple (candidate) operation / value(s) will actually be applied, and the terminal that has received such an instruction may apply the instructed operation / value(s).

[0315] As an example of the present disclosure, if the default action is set / defined as “transmission activation”, after receiving RS / report configuration information (e.g., after receiving an RRC message) or if a specific condition related to the default action is satisfied, the terminal can perform the corresponding RS / report related transmission / reception action (as a default action) without a separate DCI / MAC-CE instruction.

[0316] The above-described configuration / rule may support periodic RS / report transmission / reception operations in a basic wireless communication system. That is, when the default operation for a specific RS / report is set as described above (e.g., "transmission enable"), periodic RS / report transmissions (e.g., periodic CSI-RS / SSB / SRS, or periodic CSI / beam reporting) for that RS / report may be performed (until a separate deactivation instruction is given).

[0317] As another example, if the default behavior is set / defined as "Transmission Disabled," the terminal may not perform the relevant RS / Report transmission / reception operation until a separate lower layer message indicates the transmission operation and / or timing. Accordingly, the relevant RS / Report transmission may not be performed until a separate instruction is given, similar to the SP / AP RS / Report transmission / reception operation in a basic wireless communication system.

[0318] Embodiment 1-2 may be applied in conjunction with Embodiment 1-1. For example, under certain conditions, the default N value related to the number of transmissions may be set / defined as 0. If the default N value is defined as 0, the terminal may not perform reception / measurement transmission related to the RS / report until a separate instruction is given for the related RS / report.

[0319] As another example, the default N value related to the number of transmissions under (other) conditions may be defined / set to be unlimited (or, very / largest value). If the default N value is defined / set to be unlimited (or, very / largest value), the terminal may perform reception, measurement, and transmission / reception related to the relevant RS / report without separate instructions for the relevant RS / report.

[0320] Option #3 relates to parameters and related procedures when Embodiments 1-1 and 1-2 are applied together. Option #3 relates to a method for integrating specific reports and DL measurement RS(es) associated with specific reports to indicate / control related transmission operations and transmission cycles / intervals. Furthermore, the codepoint indicating the default transmission cycle value assumes, but is not limited to, cases where the indication of the cycle value is not required (e.g., when transmitting only once and / or when a deactivation indication is transmitted). Null and default values / settings may be mapped to different codepoints.

[0321] Option #3: DL RS Transmission Number (Nrs), DL RS Transmission Period (Prs), Report Number (Nrp) and / or Report Period (Prp) may be indicated:

[0322] - (Nrs, Prs, Nrp, Prp) = (1, null / default, 1, null / default) : This could mean triggering AP RS and AP reporting (for that RS) together;

[0323] - (Nrs, Prs, Nrp, Prp) = (M(>1), null / default, 1, null / default) : This could mean triggering both M-shots with default period and AP reporting (for that RS);

[0324] - (Nrs, Prs, Nrp, Prp) = (unlimited, 4, M(>1), 8) : This could mean "RS activation with 4 slot periodicity + M-slot report trigger with 8 slot periodicity".

[0325] - (Nrs, Prs, Nrp, Prp) = (unlimited, 4, unlimited, null / default) : This could mean "RS activation with 4 slot cycle + Report activation with default cycle";

[0326] - (Nrs, Prs, Nrp, Prp) = (unlimited, 4, 0, null / default): This can mean i) SP RS activation instruction (having 4 slots) and / or ii) SP RS activation instruction (having 4 slots) and reporting deactivation. In this case, both i) and ii) can be supported, and the action to be applied among i) or ii) can be separately set / indicated. In addition, the Prp value in the above-described instructions can be set and distinguished differently. For example, if "Nrp=0" and "Prp=0", it can mean transmission abort (e.g., interpretation according to ii)). If "Nrp=0" and "Prp = reserved codepoint or void", it can mean an instruction not related to the reporting action (e.g., interpretation according to i)). In addition, RS deactivation can be indicated using the Nrs (and Prs) fields, as in the examples described above.

[0327] -(Nrs, Prs, Nrp, Prp) = (reserved / invalid, null / default, 1, null / default) : This may mean AP reporting triggering, and the relevant RS (e.g. periodic RS) may be pre-activated / triggered.

[0328] Option #3 described above assumes that the transmission actions / timings for RS and Report are directed / controlled together, but control of RS and Report may also be performed by separate instructions.

[0329] In the application of embodiments of the present disclosure (e.g., Embodiment 1, Embodiment 1-1, Embodiment 1-2), a container conveying an indication (e.g., an indication of a transmission operation / timing) may be a DCI or a MAC-CE. For example, if the container conveying the indication is a DCI, the DCI may include a separate indicator (e.g., an indicator indicating a transmission operation / timing) depending on whether the reporting channel is a PUCCH or a PUSCH. Additionally or alternatively, a UL resource (type) may be indicated through the indicator.

[0330] For example, instructions related to reporting operations on PUCCH may be performed via DL DCI (format), and instructions related to reporting operations on PUSCH may be performed via UL DCI (format) containing PUSCH allocation information. Through this, whether the relevant reporting is performed via PUCCH or PUSCH can be determined / indicated / distinguished depending on the type of DCI format / type through which the instructions are conveyed.

[0331] As an example of the present disclosure, SP CSI on PUSCH and SP CSI on PUCCH supported in a wireless communication system can have their operations / timings controlled through the same indication information (e.g., indication information according to Embodiment 1, Embodiment 1-1, and Embodiment 1-2). Whether SP CSI is transmitted through PUCCH or PUSCH can be distinguished / determined depending on whether the indication information is DL DCI or UL DCI. Similarly, whether AP CSI is transmitted through PUCCH or PUSCH can be distinguished / determined depending on whether the indication information is DL DCI or UL DCI.

[0332] Below, when CSI measurement / reporting is applied to the present disclosure, the method of configuring RRC, MAC-CE, or DCI information is described:

[0333] As an example of the present disclosure, an RRC message (e.g., configuration information) may include information for configuring report content and / or related parameters (e.g., codebook parameters) related to a CSI report. In this case, the transmission operation (e.g., one or more shots, AP / SP transmission, etc.) and / or the transmission time (e.g., period, slot offset, etc.) of the CSI report may not be configured for the terminal, or multiple candidate value(s) related to the transmission operation / time may be configured for the terminal.

[0334] Additionally or alternatively, the RRC message (e.g., configuration information) may include information for configuring UL channel resources (e.g., PUCCH / PUSCH resources) for performing CSI reporting. In this case, the symbol positions, subcarrier / RB positions, format, MCS, etc. within the UL channel slot are configured for the terminal, but the slot-level transmission timing (e.g., period, slot offset, etc.) may not be configured for the terminal, or multiple candidate values ​​related to the transmission timing may be configured for the terminal. For example, in the case of PUSCH-based CSI reporting, the configuration of channel resource information may be omitted.

[0335] Additionally or alternatively, the RRC message (e.g., configuration information) may include information for configuring measurement RS(s) for CSI reporting. In this case, the symbol position, subcarrier / RB position, sequence, and OCC within the RS's slot are configured for the terminal, and the slot-level transmission operation (e.g., single or multi-shot, AP / SP transmission, etc.) and / or transmission timing (e.g., period, slot offset) may not be configured for the terminal, or multiple candidate value(s) related to the transmission operation / timing may be configured for the terminal.

[0336] By applying the above-described method(s), the number / period / timing / triggering of RS / reports can be controlled via MAC-CE or DCI. That is, the base station can transmit control information related to the number / period / timing / triggering of RS / reports to the terminal via MAC-CE or / and DCI.

[0337] In applying the above-described embodiments (e.g., Embodiment 1, Embodiment 1-1, Embodiment 1-2), a rule may be additionally stipulated / established for adjusting the transmission interval / period / offset under specific conditions / situations based on a preset / indicated transmission time point / period / interval. For example, if a collision / overlap occurs with another specific RS / channel position, the transmission time point may be adjusted (e.g., delayed transmission of the other specific RS / channel through another symbol without collision). At this time, if necessary (e.g., to maintain the transmission interval, etc.), the transmission time point(s) after / near the adjusted transmission time point (e.g., within a predefined critical time interval range) may also be adjusted.

[0338] The indicator(s) related to the indication of the transmission operation / timing of the RS / report described in the present disclosure may be configured / encoded (e.g., jointly encoded) to support not only the corresponding function(s) but also other function(s). For example, the indicator(s) related to the indication of the transmission operation / timing of the RS / report may be utilized to indicate information related to a beam (e.g., QCL, spatial filter, TCI state, etc.) to be applied to the corresponding RS / report (e.g., an indication of a TCI state to be applied among multiple UL TCI states), transmission power (ratio) for the corresponding RS / report, timing advance (TA) related information, or / and priority information for collision / overlap handling (e.g., drop, partial omission, power allocation, etc.) for the corresponding RS / report.

[0339] The indication(s) related to the transmission operation / timing of the RS / report described in the present disclosure may be indicated / transmitted via separate indication(s) related thereto, but may also be indicated via unused codepoints / fields of other information fields included in the corresponding DCI / MAC-CE.

[0340] Additionally or alternatively, if unnecessary information is configured on the indicator(s) related to the transmission operation / timing of the RS / report, information related to other function(s) described above may be indicated through the field / code point corresponding to the unnecessary information. As an example, assume that an indicator for AP triggering is transmitted to the terminal. In the AP transmission procedure, transmission period / interval information may not be required. Accordingly, the code point / field related to transmission period / interval information on the indicator for AP triggering may be reserved, and information related to other function(s) may be indicated through the reserved code point / field.

[0341] In describing the present disclosure, the CSI / beam measurement RS, the CSI / beam report associated with the RS, and the control / adjustment associated with SRS transmission have been described, but are not limited thereto. Various embodiments of the present disclosure can be extended to other types of measurement reports (e.g., measurement reports for RRM / mobility) and other types of RS transmission / reception procedures.

[0342] Additionally or alternatively, various embodiments of the present disclosure can be extended to control / support operations of various time domain behaviors of interference measurement resources (IMRs) (e.g., AP IMR, SP IMR, P IMR, etc.). That is, the base station can transmit control information for triggering / activating / deactivating procedures related to the IMR and / or control information for controlling / changing the timing of the IMR to the terminal.

[0343] At this time, instruction / control information for IMR and channel measurement resources (CMR) can be transmitted to the terminal together or separately. Furthermore, common values ​​(e.g., transmission operation, period, offset, transmission count, etc.) can be applied to the CMR and IMR, or separate values ​​can be applied.

[0344] Additionally or alternatively, various embodiments of the present disclosure may be extended to control / support operations of various time domain behaviors (e.g., AP RS, SP RS, P RS, etc.) of zero-power (ZP) RSs (e.g., ZP CSI-RS, ZP PT-RS, ZP SRS) for rate matching (or puncturing) of PDSCH / PUSCH, etc. That is, control / configuration information, etc. according to various embodiments of the present disclosure may be used to trigger / activate / deactivate rate matching RSs (resources) or control / change (transmission) timings.

[0345] Additionally or alternatively, the terminal may transmit capability information related to transmission operations / time points, etc. according to various embodiments of the present disclosure supported by the terminal to the base station. For example, the terminal may transmit terminal capability information related to the type of RS / report supported by the terminal and / or terminal capability information related to the transmission cycle / interval of the corresponding RS / report supported by the terminal to the base station. The base station may transmit various configuration / control information to the terminal based on the terminal capability information received from the terminal.

[0346] Various embodiments of the present disclosure can support various combinations of P / SP / AP / MS CS-RS and / or P / SP / AP / MS CSI reporting through a single CSI measurement / reporting configuration. Accordingly, overhead related to CSI configuration / indication can be significantly reduced. Furthermore, resource efficiency can be increased as the RS and CSI report transmission cycle / timing can be dynamically controlled based on the mobility status of the terminal.

[0347] In addition, support / control of various transmission operations and timings can be supported for not only CSI-related RS / reports but also other RS / report transmissions and receptions. For UL RS transmissions, such as SRS transmissions, various transmission methods (e.g., AP / SP / P transmissions) can be supported through common settings, and the corresponding RS overhead can also be controlled according to UL channel conditions.

[0348] FIG. 21 is a diagram for explaining a signaling procedure of a network side and a terminal according to one embodiment of the present disclosure.

[0349] FIG. 21 illustrates an example of signaling between a network side and a terminal (UE) in an M-TRP situation to which the examples of the present disclosure described above (e.g., one or more combinations of Embodiment 1, Embodiment 1-1, Embodiment 1-2, or / and detailed embodiments thereof) can be applied.

[0350] Here, the UE / network side is exemplary and can be replaced with various devices as described with reference to FIG. 3. FIG. 21 is provided for convenience of explanation and does not limit the scope of the present disclosure. Furthermore, some of the steps shown in FIG. 21 may be omitted depending on the situation and / or settings. Furthermore, in the operation of the network side / UE of FIG. 21, the aforementioned uplink transmission / reception operations, M-TRP-related operations, etc. may be referenced or utilized.

[0351] In the following description, the network side may be a single base station including multiple TRPs, or a single cell including multiple TRPs. Alternatively, the network side may include multiple remote radio heads (RRHs) / remote radio units (RRUs).

[0352] For example, ideal / non-ideal backhauls can be established between TRP 1 and TRP 2, which constitute the network side. Furthermore, while the following description is based on multiple TRPs, it can be equally extended to transmissions through multiple panels / cells, and can also be extended to transmissions through multiple RRHs / RRUs, etc.

[0353] In addition, although the following description is based on "TRP", as described above, "TRP" can be replaced and applied with expressions such as panel, antenna array, cell (e.g., macro cell / small cell / pico cell, etc.), transmission point (TP), base station (gNB, etc.). As described above, TRP can be distinguished according to information about CORESET group (or CORESET pool) (e.g., CORESET index, ID).

[0354] For example, if a single terminal is configured to transmit and receive with multiple TRPs (or cells), this may mean that multiple CORESET groups (or CORESET pools) are configured for the single terminal. The configuration of such CORESET groups (or CORESET pools) can be performed via higher-layer signaling (e.g., RRC signaling).

[0355] Additionally, a base station may be a general term for an object that transmits and receives data with a terminal. For example, the base station may be a concept that includes one or more Transmission Points (TPs), one or more Transmission and Reception Points (TRPs), etc. Furthermore, the TPs and / or TRPs may include a panel of the base station, a transmission and reception unit, etc.

[0356] The terminal can receive one or more RS / report transmission / reception related configuration information from the base station (or network) (S110).

[0357] For example, the configuration information may include DL / UL RS configuration information, report information configuration information, UL channel resource (e.g., PUCCH, PUSCH) information for reporting / transmission, etc. Before S110, the terminal may transmit terminal capability information related to various configuration values ​​supported by the terminal to the base station. The configuration information may be determined / configured based on the terminal capability information, but is not limited thereto.

[0358] The base station may transmit instructions related to transmission operation / timing for RS / reports to the terminal based on the configuration information (S115). Instructions related to transmission operation / timing for RS / reports may be configured according to various embodiments of the present disclosure (e.g., one or more combinations of Embodiment 1, Embodiment 1-1, Embodiment 1-2, or / and detailed embodiments thereof).

[0359] For example, if the instruction is related to DL RS trigger / activation, the terminal can receive DL RS from the DL base station (S120). For example, if the instruction is related to report trigger / activation, the terminal can perform the corresponding report transmission procedure (S125). For example, if the instruction is related to UL RS trigger / activation, the terminal can perform the UL RS transmission procedure (S125). For example, if the instruction is related to all reports for DL ​​RS, the terminal can perform the corresponding DL RS transmission procedure (M120) and report transmission procedure (M125). For example, if the instruction is related to adjustment of transmission timing (e.g., transmission cycle / interval / offset), the terminal can change and transmit the transmission timing for a previously transmitted RS / report. The above-described embodiments of the present disclosure (e.g., Embodiment 1, Embodiment 1-1, Embodiment 1-2 or / and a combination of one or more of their detailed embodiments) may be applied to the above-described procedures.

[0360] The embodiments described above are combinations of components and features of the present disclosure in a predetermined form. Each component or feature should be considered optional unless explicitly stated otherwise. Each component or feature may be implemented without being combined with other components or features. Furthermore, it is also possible to form embodiments of the present disclosure by combining some components and / or features. The order of operations described in the embodiments of the present disclosure may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment. It is self-evident that claims that do not have an explicit citation relationship in the patent claims may be combined to form embodiments or incorporated as new claims through post-application amendments.

[0361] It will be apparent to those skilled in the art that the present disclosure may be embodied in other specific forms without departing from the essential characteristics thereof. Therefore, the above detailed description should not be construed as limiting in any respect, but rather as illustrative. The scope of the present disclosure should be determined by a reasonable interpretation of the appended claims, and all modifications within the scope of equivalents of the present disclosure are intended to be included within the scope of the present disclosure.

[0362] The scope of the present disclosure includes software or machine-executable instructions (e.g., an operating system, an application, firmware, a program, etc.) that cause operations according to the methods of various embodiments to be executed on a device or a computer, and a non-transitory computer-readable medium having such software or instructions stored thereon and executable on the device or computer. Instructions that can be used to program a processing system to perform the features described in the present disclosure can be stored on / in a storage medium or a computer-readable storage medium, and a computer program product including such a storage medium can be used to implement the features described in the present disclosure. The storage medium can include, but is not limited to, high-speed random access memory, such as DRAM, SRAM, DDR RAM, or other random access solid state memory devices, and can include non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. The memory optionally includes one or more storage devices remotely located from the processor(s). The memory or, alternatively, the non-volatile memory device(s) within the memory comprise a non-transitory computer-readable storage medium. The features described in this disclosure may be incorporated into software and / or firmware stored on any of the machine-readable media, which may control the hardware of the processing system and allow the processing system to interact with other mechanisms that utilize results according to embodiments of the present disclosure. Such software or firmware may include, but is not limited to, application code, device drivers, operating systems, and execution environments / containers.

[0363] Here, the wireless communication technology implemented in the device of the present disclosure may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. For example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology and may be implemented with standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the device of the present disclosure may perform communication based on LTE-M technology. For example, LTE-M technology may be an example of LPWAN technology and may be called by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology can be implemented by at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the device (100, 200) of the present disclosure can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication, and is not limited to the above-described names. For example, ZigBee technology can create personal area networks (PAN) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.

[0364] The method proposed in this disclosure is explained with a focus on examples applied to 3GPP LTE / LTE-A and 5G systems, but can be applied to various wireless communication systems in addition to 3GPP LTE / LTE-A and 5G systems.

Claims

1. A step of receiving first configuration information related to at least one reference signal (RS) from a base station by a terminal; i) receiving, by the terminal, from the base station first control information including at least one of information on a transmission operation of report information for at least one RS or ii) information on a transmission time of the report information; and Based on the first control information, a step of transmitting the report information to the base station by the terminal is included. A method in which information on the transmission operation of the above report information includes the number of times (M) of transmission of the above report information.

2. In paragraph 1, A method in which information about the transmission time of the above-mentioned report information includes at least one of a transmission period, a transmission interval, and an offset of the above-mentioned report information.

3. In paragraph 1, A method wherein information about the transmission operation of the above report information includes at least one of information related to triggering, activating or deactivating the transmission of the above report information, and a transmission type of the above report information.

4. In paragraph 3, A method in which transmission of the report information is performed by the terminal until second control information including information related to deactivation of transmission of the report information is received from the base station based on the first control information including information related to activation of transmission of the report information.

5. In paragraph 3, A method wherein the transmission type of the above reporting information includes at least one of an aperiodic transmission type, a periodic transmission type, a semi-persistent transmission type, or the N transmission types.

6. In paragraph 1, Based on the above M value being set to 0, the transmission of the above reporting information is disabled, Based on the above M value being set to 1 or more, the above reporting information is transmitted to the above base station M times, A method in which transmission of the report information is activated based on the above M value being set to a parameter associated with null or unlimited.

7. In paragraph 1, A method in which the report information is transmitted to the base station based on a default transmission operation and a default transmission time before the first control information is received from the base station or based on a condition related to transmission of the report information being satisfied.

8. In paragraph 1, A method in which the default transmission operation and the default transmission time are defined differently or set by the base station depending on the type of the RS.

9. In paragraph 7, A method wherein the conditions related to transmission of the above report information include at least one of a condition related to expiration of a timer related to the above report information, a condition related to activation of a bandwidth part (BWP) related to transmission of the above report information, and a condition related to mobility of the terminal.

10. In paragraph 1, A method in which the first control information is transmitted to the terminal through downlink control information (DCI) or a medium access control (MAC) control element (CE).

11. In paragraph 1, Terminal capability information related to at least one of the transmission operation and transmission time of the above-mentioned report information is transmitted by the terminal to the base station, A method wherein the first setting information is based on the terminal capability information.

12. In paragraph 1, A method wherein the first setting information includes at least one of resource information of the at least one RS or resource information for reporting on a resource of the at least one RS.

13. One or more transceivers; and comprising one or more processors connected to said one or more transceivers, One or more of the above processors: Receive first configuration information related to at least one reference signal (RS) from a base station through the one or more transceivers; i) receiving first control information including at least one of information about a transmission operation of report information for at least one RS or ii) information about a transmission time of the report information from the base station through the at least one transceiver; and Based on the first control information, the reporting information is set to be transmitted to the base station through the one or more transceivers, Information on the transmission operation of the above report information, including the number of times (M) of transmission of the above report information, a terminal.

14. A step of transmitting first configuration information related to at least one reference signal (RS) to a terminal by a base station; i) transmitting first control information including at least one of information about a transmission operation of report information for at least one RS or ii) information about a transmission time of the report information to the terminal by the base station; and Based on the first control information, a step of receiving the report information from the terminal by the base station is included, A method in which information on the transmission operation of the above report information includes the number of times (M) of transmission of the above report information.

15. In the base station, the base station: one or more transceivers; and comprising one or more processors connected to said one or more transceivers, One or more of the above processors: Transmitting first configuration information related to at least one reference signal (RS) to a terminal via the one or more transceivers; i) transmitting first control information including at least one of information about a transmission operation of report information for at least one RS or ii) information about a transmission time of the report information to the terminal through the at least one transceiver; and Based on the first control information, the reporting information is set to be received from the terminal through the one or more transceivers, Information on the transmission operation of the above report information, including the number of times (M) of transmission of the above report information, a base station.

16. In a processing device configured to control a terminal, the processing device: one or more processors; and A processing device comprising one or more computer memories operatively connected to said one or more processors and storing instructions that, when executed by said one or more processors, perform a method according to any one of claims 1 to 12.

17. One or more non-transitory computer-readable media storing one or more instructions, A computer-readable medium, wherein the one or more commands are executed by one or more processors to control a device to perform a method according to any one of claims 1 to 12.

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