Method and device for transmitting uplink control channel in wireless mobile communication system

Abstract

A method and device for a terminal to transmit an uplink control channel provide a method and device for differently configuring an uplink control channel transmission beam between a legacy symbol and a symbol in which subband-based full duplex communication is set up.

Description

Method and device for transmitting an uplink control channel in a wireless mobile communication system

[0001] The present disclosure relates to a technology for transmitting an uplink control channel in a wireless mobile communication system.

[0002] TDD (Time Division Duplex) is a duplexing method widely used in commercial New Radio (NR) and 5G mobile communication systems. In TDD, time-slot radio resources are divided into downlink and uplink slots. Typically, downlink slots are distributed at a higher rate than uplink slots, depending on the distribution ratio of uplink to downlink traffic. However, this limitation of uplink slots negatively impacts coverage and latency. Full duplex has recently attracted attention as a technology to address these issues.

[0003] Additionally, as the number of terminals within a cell increases, beam-based communication technologies are being studied to provide efficient communication. Beam-based communication, which forms beams for specific terminals or groups of terminals, can provide efficient communication while reducing interference.

[0004] Even in a Full Duplex environment, especially when Full Duplex is configured on a symbol or slot basis based on a subband, communication using beams can be performed. In such cases, support is required for specific settings and operations for a terminal to configure a beam and transmit uplink information.

[0005] The present disclosure seeks to provide a technology for transmitting an uplink control channel when subband full-duplex communication is applied.

[0006] In one aspect, the present embodiments provide a method for a terminal to transmit an uplink control channel, the method comprising: receiving PUCCH (Physical Uplink Control Channel) configuration information from a base station; receiving activation information from the base station that indicates activation of spatial relationship information for determining an uplink control channel transmission beam based on the PUCCH configuration information; determining an uplink control channel transmission beam based on the spatial relationship information indicated by the activation information; and transmitting an uplink control channel to the base station using the uplink control channel transmission beam, wherein the uplink control channel transmission beam is separately determined for each of a first type symbol in which subband-based full duplex communication is set and a second type symbol in which subband-based full duplex communication is not set.

[0007] In another aspect, the present embodiments provide a method for a base station to control uplink control channel transmission of a terminal, comprising the steps of transmitting PUCCH (Physical Uplink Control Channel) configuration information to the terminal, transmitting activation information to the terminal that indicates activation of spatial relationship information for determining an uplink control channel transmission beam based on the PUCCH configuration information, and receiving an uplink control channel from the terminal using an uplink control channel transmission beam determined based on the spatial relationship information indicated by the activation information, wherein the uplink control channel transmission beam is determined separately for each of a first type symbol in which subband-based full duplex communication is set and a second type symbol in which subband-based full duplex communication is not set.

[0008] In another aspect, the present embodiments provide a terminal device for transmitting an uplink control channel, including a receiving unit for receiving activation information indicating activation of spatial relationship information for determining an uplink control channel transmission beam based on PUCCH (Physical Uplink Control Channel) configuration information and the PUCCH configuration information from a base station, a control unit for determining an uplink control channel transmission beam based on the spatial relationship information indicated by the activation information, and a transmitting unit for transmitting an uplink control channel to the base station using the uplink control channel transmission beam, wherein the uplink control channel transmission beam is determined separately for each of a first type symbol in which subband-based full duplex communication is set and a second type symbol in which subband-based full duplex communication is not set.

[0009] In another aspect, the present embodiments provide a base station for controlling uplink control channel transmission of a terminal, comprising: a transmitter for transmitting activation information indicating activation of spatial relationship information for determining an uplink control channel transmission beam based on PUCCH (Physical Uplink Control Channel) configuration information and PUCCH configuration information to the terminal; and a receiver for receiving an uplink control channel from the terminal using an uplink control channel transmission beam determined based on the spatial relationship information indicated by the activation information, wherein the uplink control channel transmission beam is determined separately for each of a first type symbol in which subband-based full duplex communication is set and a second type symbol in which subband-based full duplex communication is not set.

[0010] The present disclosure provides a technology for transmitting an uplink control channel in a symbol to which subband-based full-duplex communication is applied.

[0011] FIG. 1 is a schematic diagram illustrating the structure of an NR wireless communication system to which the present embodiment can be applied.

[0012] FIG. 2 is a drawing for explaining a frame structure in an NR system to which the present embodiment can be applied.

[0013] FIG. 3 is a diagram for explaining a resource grid supported by a wireless access technology to which the present embodiment can be applied.

[0014] FIG. 4 is a diagram for explaining a bandwidth part supported by a wireless access technology to which the present embodiment can be applied.

[0015] FIG. 5 is a diagram illustrating an example of a synchronization signal block in a wireless access technology to which the present embodiment can be applied.

[0016] FIG. 6 is a diagram for explaining a random access procedure in a wireless access technology to which the present embodiment can be applied.

[0017] Figure 7 is a drawing for explaining CORESET.

[0018] FIG. 8 is a diagram for explaining an example of a UL subband setting in an arbitrary DL slot to which the present embodiment can be applied.

[0019] FIG. 9 is a diagram for explaining an example in which a UL subband is set differently in any DL slot to which the present embodiment can be applied.

[0020] Fig. 10 is a drawing for explaining terminal operation according to one embodiment.

[0021] Fig. 11 is a diagram for explaining base station operation according to one embodiment.

[0022] Fig. 12 is a drawing showing the configuration of a terminal according to another embodiment.

[0023] Fig. 13 is a drawing showing the configuration of a base station according to another embodiment.

[0024] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to exemplary drawings. When adding reference numerals to components in each drawing, identical components may have the same numerals as much as possible even if they are shown in different drawings. In addition, when describing the present embodiments, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the technical idea of ​​the present invention, the detailed description may be omitted. When "includes," "has," "consists of," etc. are used in this specification, other parts may be added unless "only" is used. When a component is expressed in the singular, it may include a case in which the plural is included unless specifically stated otherwise.

[0025] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of the present disclosure. These terms are only intended to distinguish the components from other components, and the nature, order, sequence, or number of the components are not limited by the terms.

[0026] In a description of the positional relationship of components, when it is described that two or more components are "connected," "combined," or "connected," it should be understood that the two or more components may be directly "connected," "combined," or "connected," but that the two or more components may also be further "interposed" with another component to be "connected," "combined," or "connected." Here, the other component may be included in one or more of the two or more components that are "connected," "combined," or "connected" to each other.

[0027] In the description of the temporal flow relationship related to components, operation methods, or manufacturing methods, for example, when the temporal or flow relationship is described as “after”, “following”, “next to”, “before”, etc., it may also include cases where it is not continuous, unless “immediately” or “directly” is used.

[0028] Meanwhile, when numerical values ​​or corresponding information (e.g., levels, etc.) for components are mentioned, even without separate explicit description, the numerical values ​​or corresponding information may be interpreted as including an error range that may occur due to various factors (e.g., process factors, internal or external impact, noise, etc.).

[0029] The wireless communication system in this specification refers to a system for providing various communication services such as voice, data packets, etc. using wireless resources, and may include a terminal, a base station, or a core network.

[0030] The embodiments disclosed below can be applied to wireless communication systems using various wireless access technologies. For example, the embodiments can be applied to various wireless access technologies such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), SC-FDMA (single carrier frequency division multiple access), or NOMA (non-orthogonal multiple access). In addition, the wireless access technology may not only refer to a specific access technology, but also to each generation of communication technologies established by various communication agreement organizations such as 3GPP, 3GPP2, WiFi, Bluetooth, IEEE, and ITU. For example, 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 in wireless technologies such as IEEE (Institute of Electrical and Electronics Engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and E-UTRA (evolved UTRA). IEEE 802.16m is an evolution of IEEE 802.16e and provides backward compatibility with systems based on IEEE 802.16e.UTRA is part of UMTS (universal mobile telecommunications system). 3GPP (3rd generation partnership project) LTE (long term evolution) is part of E-UMTS (evolved UMTS) that uses E-UTRA (evolved-UMTSterrestrial radio access), employing OFDMA in the downlink and SC-FDMA in the uplink. Thus, the present embodiments can be applied to currently disclosed or commercialized wireless access technologies, as well as wireless access technologies currently under development or to be developed in the future.

[0031] Meanwhile, the term "terminal" in this specification is a comprehensive concept that refers to a device that includes a wireless communication module that performs communication with a base station in a wireless communication system, and should be interpreted as a concept that includes not only UE (User Equipment) in WCDMA, LTE, NR, HSPA, and IMT-2020 (5G or New Radio), but also MS (Mobile Station), UT (User Terminal), SS (Subscriber Station), and wireless device in GSM. In addition, the terminal may be a user portable device such as a smartphone depending on the usage type, and in a V2X communication system, it may mean a vehicle, a device including a wireless communication module in the vehicle, etc. In addition, in the case of a Machine Type Communication system, it may mean an MTC terminal, M2M terminal, URLLC terminal, etc. that is equipped with a communication module to perform machine type communication.

[0032] The base station or cell in this specification refers to an end that communicates with a terminal in terms of a network, and includes various coverage areas such as Node-B, eNB (evolved Node-B), gNB (gNode-B), LPN (Low Power Node), Sector, Site, various types of antennas, BTS (Base Transceiver System), Access Point, Point (e.g., Transmission Point, Reception Point, Transmission / Reception Point), Relay Node, Mega Cell, Macro Cell, Micro Cell, Pico Cell, Femto Cell, RRH (Remote Radio Head), RU (Radio Unit), and Small Cell. In addition, a cell may mean including a BWP (Bandwidth Part) in the frequency domain. For example, a serving cell may mean an Activation BWP of a terminal.

[0033] Since the various cells listed above have a base station that controls one or more cells, the base station can be interpreted in two meanings. 1) It can be a device itself that provides a mega cell, macro cell, micro cell, pico cell, femto cell, or small cell in relation to a wireless area, or 2) it can indicate the wireless area itself. In 1), all devices that provide a given wireless area are controlled by the same entity or that interact to cooperatively configure the wireless area are all indicated as a base station. Depending on how the wireless area is configured, a point, a transceiver point, a transmission point, a reception point, etc. can be an embodiment of a base station. In 2), the wireless area itself that receives or transmits a signal from the perspective of a user terminal or a neighboring base station can also be indicated as a base station.

[0034] In this specification, a cell may mean a component carrier having coverage of a signal transmitted from a transmission / reception point or a transmission / reception point itself.

[0035] Uplink (UL, or uplink) refers to a method of transmitting and receiving data from a terminal to a base station, and downlink (DL, or downlink) refers to a method of transmitting and receiving data from a base station to a terminal. Downlink may refer to communication or a communication path from multiple transmission / reception points to a terminal, and uplink may refer to communication or a communication path from a terminal to multiple transmission / reception points. In this case, in the downlink, the transmitter may be part of the multiple transmission / reception points, and the receiver may be part of the terminal. In addition, in the uplink, the transmitter may be part of the terminal, and the receiver may be part of the multiple transmission / reception points.

[0036] Uplink and downlink transmit and receive control information through control channels such as PDCCH (Physical Downlink Control CHannel) and PUCCH (Physical Uplink Control CHannel), and transmit and receive data by configuring data channels such as PDSCH (Physical Downlink Shared CHannel) and PUSCH (Physical Uplink Shared CHannel). Hereinafter, the situation in which signals are transmitted and received through channels such as PUCCH, PUSCH, PDCCH, and PDSCH is also expressed in the form of 'transmitting and receiving PUCCH, PUSCH, PDCCH, and PDSCH.'

[0037] For clarity of explanation, the technical idea of ​​this invention is described below mainly with reference to the 3GPP LTE / LTE-A / NR (New RAT) communication system, but the technical features of this invention are not limited to the communication system.

[0038] After researching 4G (4th-Generation) communication technology, 3GPP develops 5G (5th-Generation) communication technology to meet the requirements of the next-generation wireless access technology of the ITU-R. Specifically, 3GPP develops LTE-A pro, which is an enhancement of LTE-Advanced technology to meet the requirements of the ITU-R, as a 5G communication technology, and NR, a new communication technology separate from 4G communication technology. Both LTE-A pro and NR refer to 5G communication technology, and in the following, 5G communication technology will be explained with NR as the focus, unless a specific communication technology is specified.

[0039] The operating scenario in NR defines various operation scenarios by adding considerations for satellites, automobiles, and new verticals to the existing 4G LTE scenario, and in terms of service, it supports the eMBB (Enhanced Mobile Broadband) scenario, the mMTC (Massive Machine Communication) scenario that has high terminal density but is deployed over a wide area and requires low data rate and asynchronous access, and the URLLC (Ultra Reliability and Low Latency) scenario that requires high responsiveness and reliability and can support high-speed mobility.

[0040] To meet these scenarios, NR introduces a wireless communication system that incorporates new waveform and frame structure technologies, low latency technologies, support for ultra-high frequency bands (mmWave), and forward compatibility technologies. In particular, NR systems offer various technological changes in terms of flexibility to ensure forward compatibility. The key technical features of NR are described below with reference to the drawings.

[0041] <NR 시스템 일반>

[0042] Figure 1 is a schematic diagram illustrating the structure of an NR system to which the present embodiment can be applied.

[0043] Referring to Fig. 1, the NR system is divided into 5GC (5G Core Network) and NR-RAN parts, and the NG-RAN is composed of gNBs and ng-eNBs that provide user plane (SDAP / PDCP / RLC / MAC / PHY) and control plane (RRC) protocol termination for UE (User Equipment). gNBs or gNBs and ng-eNBs are interconnected via the Xn interface. gNBs and ng-eNBs are each connected to the 5GC via the NG interface. The 5GC can be configured to include an AMF (Access and Mobility Management Function) that is responsible for the control plane such as terminal access and mobility control functions, and an UPF (User Plane Function) that is responsible for the control function for user data. NR includes support for both frequency bands below 6 GHz (FR1, Frequency Range 1) and frequency bands above 6 GHz (FR2, Frequency Range 2).

[0044] gNB refers to a base station that provides NR user plane and control plane protocol termination to terminals, and ng-eNB refers to a base station that provides E-UTRA user plane and control plane protocol termination to terminals. The base station described in this specification should be understood to encompass both gNB and ng-eNB, and may also be used to refer to gNB or ng-eNB separately as needed.

[0045] <NR 웨이브 폼,뉴머롤러지 및 프레임 구조>

[0046] NR uses the CP-OFDM waveform with a cyclic prefix for downlink transmission, and CP-OFDM or DFT-s-OFDM for uplink transmission. OFDM technology is easily combined with MIMO (Multiple Input Multiple Output) and offers the advantages of high spectral efficiency and low-complexity receivers.

[0047] Meanwhile, in NR, the requirements for data rates, latency, and coverage differ across the three scenarios mentioned above. Therefore, it is necessary to efficiently satisfy these requirements across the frequency bands that comprise any NR system. To this end, technologies have been proposed to efficiently multiplex radio resources based on multiple different numerologies.

[0048] Specifically, the NR transmission numerator is determined based on the sub-carrier spacing and the cyclic prefix (CP), and is changed exponentially using the μ value as an exponent value of 2 based on 15 kHz, as shown in Table 1 below.

[0049] μsubcarrier intervalCyclic prefixSupported for dataSupported for synch015NormalYesYes130NormalYesYes260Normal, ExtendedYesNo3120NormalYesYes4240NormalNoYes

[0050] As shown in Table 1 above, the numerology of NR can be divided into five types according to the subcarrier spacing. This is different from the fixed 15 kHz subcarrier spacing of LTE, one of the 4G communication technologies. Specifically, the subcarrier spacing used for data transmission in NR is 15, 30, 60, and 120 kHz, and the subcarrier spacing used for synchronization signal transmission is 15, 30, 120, and 240 kHz. In addition, the extended CP is applied only to the 60 kHz subcarrier spacing. Meanwhile, the frame structure in NR is defined as a 10 ms frame consisting of 10 subframes of the same length of 1 ms. One frame can be divided into 5 ms half frames, and each half frame contains 5 subframes. In the case of a 15 kHz subcarrier spacing, one subframe consists of one slot, and each slot consists of 14 OFDM symbols. FIG. 2 is a diagram for explaining the frame structure in an NR system to which the present embodiment can be applied.

[0051] Referring to Fig. 2, a slot is fixedly composed of 14 OFDM symbols in the case of a normal CP, but the length of the slot in the time domain may vary depending on the subcarrier spacing. For example, in the case of a numerology with a 15 kHz subcarrier spacing, a slot is composed of 1 ms in length, which is the same length as a subframe. In contrast, in the case of a numerology with a 30 kHz subcarrier spacing, a slot is composed of 14 OFDM symbols, but two slots may be included in one subframe with a length of 0.5 ms. In other words, subframes and frames are defined with fixed time lengths, while slots are defined by the number of symbols, and their time lengths may vary depending on the subcarrier spacing.

[0052] Meanwhile, NR defines slots as the basic scheduling unit and also introduces mini-slots (or sub-slots, or non-slot-based scheduling) to reduce transmission delay in the wireless section. Using wider subcarrier spacing reduces transmission delay in the wireless section by shortening the length of each slot inversely. Mini-slots (or sub-slots) are designed to efficiently support URLLC scenarios and allow scheduling in units of 2, 4, or 7 symbols.

[0053] Furthermore, unlike LTE, NR defines uplink and downlink resource allocation at the symbol level within a single slot. To reduce HARQ delay, a slot structure was defined that allows HARQ ACK / NACKs to be transmitted directly within the transmission slot. This slot structure is referred to as a self-contained structure and will be described in detail.

[0054] NR is designed to support a total of 256 slot formats, of which 62 are used in 3GPP Rel-15. It also supports a common frame structure that configures FDD or TDD frames through various combinations of slots. For example, it supports a slot structure in which all symbols in a slot are set to downlink, a slot structure in which all symbols are set to uplink, and a slot structure in which downlink and uplink symbols are combined. NR also supports data transmission being distributed and scheduled across one or more slots. Therefore, a base station can use a slot format indicator (SFI) to inform a UE whether a slot is a downlink slot, an uplink slot, or a flexible slot. The base station can indicate the slot format by indicating an index of a table configured through UE-specific RRC signaling using the SFI, and can also indicate it dynamically through DCI (Downlink Control Information) or statically or semi-statically through RRC.

[0055] <NR 물리 자원 >

[0056] In relation to physical resources in NR, antenna ports, resource grids, resource elements, resource blocks, and bandwidth parts are considered.

[0057] Antenna ports are defined such that the channel through which a symbol on an antenna port is carried can be inferred from the channel through which another symbol on the same antenna port is carried. Two antenna ports are said to be quasi co-located (QC / QCL) if the large-scale properties of the channel through which a symbol on one antenna port is carried can be inferred from the channel through which a symbol on the other antenna port is carried. Here, the large-scale properties include one or more of delay spread, Doppler spread, frequency shift, average received power, and received timing.

[0058] FIG. 3 is a diagram for explaining a resource grid supported by a wireless access technology to which the present embodiment can be applied.

[0059] Referring to Figure 3, a resource grid may exist for each numeral, as NR supports multiple numerals on the same carrier. Furthermore, resource grids may exist based on antenna ports, subcarrier spacing, and transmission direction.

[0060] A resource block (RB) consists of 12 subcarriers and is defined solely in the frequency domain. Furthermore, a resource element (RE) consists of one OFDM symbol and one subcarrier. Therefore, as shown in Figure 3, the size of a single RB can vary depending on the subcarrier spacing. NR also defines "Point A," which serves as a common reference point for the RB grid, as well as common RBs and virtual RBs.

[0061] FIG. 4 is a diagram for explaining a bandwidth part supported by a wireless access technology to which the present embodiment can be applied.

[0062] Unlike LTE, where the carrier bandwidth is fixed at 20 MHz, NR sets the maximum carrier bandwidth from 50 MHz to 400 MHz for each subcarrier interval. Therefore, it is not assumed that all terminals will use the entire carrier bandwidth. Accordingly, NR allows terminals to designate bandwidth parts (BWPs) within the carrier bandwidth, as illustrated in Figure 4. Furthermore, bandwidth parts are associated with a single numerology, consist of a subset of consecutive common resource blocks, and can be dynamically activated over time. Each terminal is configured with up to four bandwidth parts for both the uplink and downlink, and data is transmitted and received using the bandwidth parts activated at a given time.

[0063] In the case of a paired spectrum, the uplink and downlink bandwidth parts are set independently, and in the case of an unpaired spectrum, the downlink and uplink bandwidth parts are set in pairs so that they can share a center frequency to prevent unnecessary frequency re-tuning between downlink and uplink operations.

[0064] <NR 초기 접속>

[0065] In NR, a terminal performs cell search and random access procedures to connect to a base station and perform communication.

[0066] Cell search is a procedure in which a terminal synchronizes to the cell of a corresponding base station, obtains a physical layer cell ID, and obtains system information using a synchronization signal block (SSB) transmitted by the base station.

[0067] FIG. 5 is a diagram illustrating an example of a synchronization signal block in a wireless access technology to which the present embodiment can be applied.

[0068] Referring to FIG. 5, SSB is composed of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), each occupying 1 symbol and 127 subcarriers, and a PBCH spanning 3 OFDM symbols and 240 subcarriers.

[0069] The terminal receives SSB by monitoring SSB in the time and frequency domain.

[0070] SSB can be transmitted up to 64 times in 5ms. Multiple SSBs are transmitted in different transmission beams within 5ms, and the terminal performs detection assuming that SSBs are transmitted every 20ms based on a specific beam used for transmission. The number of beams that can be used for SSB transmission within 5ms can increase as the frequency band increases. For example, up to 4 SSB beams can be transmitted below 3GHz, up to 8 in the frequency band between 3GHz and 6GHz, and up to 64 different beams can be used for SSB transmission in the frequency band above 6GHz.

[0071] SSB contains two symbols in one slot, and the starting symbol and number of repetitions within the slot are determined as follows depending on the subcarrier spacing.

[0072] Meanwhile, unlike SS in conventional LTE, SSB is not transmitted at the center frequency of the carrier bandwidth. This means that SSB can be transmitted even in locations other than the center of the system bandwidth, and when supporting wideband operation, multiple SSBs can be transmitted in the frequency domain. Accordingly, the terminal monitors SSB using the synchronization raster, which is a candidate frequency location for monitoring SSB. The carrier raster, which is the center frequency location information of the channel for initial access, and the synchronization raster are newly defined in NR. The synchronization raster has a wider frequency interval than the carrier raster, which can support the terminal's fast SSB search.

[0073] A UE can obtain the MIB through the PBCH of the SSB. The MIB (Master Information Block) includes the minimum information required for the UE to receive the remaining system information (RMSI, Remaining Minimum System Information) broadcast by the network. In addition, the PBCH may include information on the position of the first DM-RS symbol in the time domain, information for the UE to monitor SIB1 (e.g., SIB1 numerology information, information related to SIB1 CORESET, search space information, PDCCH-related parameter information, etc.), offset information between the common resource block and the SSB (the absolute position of the SSB within the carrier is transmitted through SIB1), etc. Here, the SIB1 numerology information is also applied equally to some messages used in the random access procedure for the UE to access the base station after completing the cell search procedure. For example, the numerology information of SIB1 may be applied to at least one of messages 1 to 4 for the random access procedure.

[0074] The aforementioned RMSI may refer to SIB1 (System Information Block 1), and SIB1 is broadcast periodically (e.g., every 160 ms) in the cell. SIB1 contains information necessary for the UE to perform the initial random access procedure and is periodically transmitted via PDSCH. In order for the UE to receive SIB1, it must receive numerology information used for SIB1 transmission and CORESET (Control Resource Set) information used for SIB1 scheduling via PBCH. The UE checks scheduling information for SIB1 using SI-RNTI in CORESET and acquires SIB1 on PDSCH according to the scheduling information. The remaining SIBs, excluding SIB1, may be transmitted periodically or upon request of the UE.

[0075] FIG. 6 is a diagram for explaining a random access procedure in a wireless access technology to which the present embodiment can be applied.

[0076] Referring to FIG. 6, once cell search is complete, the terminal transmits a random access preamble for random access to the base station. The random access preamble is transmitted via the PRACH. Specifically, the random access preamble is transmitted to the base station via the PRACH, which consists of consecutive radio resources in a specific slot that is periodically repeated. Generally, when a terminal initially accesses a cell, a contention-based random access procedure is performed, and when performing random access for beam failure recovery (BFR), a non-contention-based random access procedure is performed.

[0077] The terminal receives a random access response to the transmitted random access preamble. The random access response may include a random access preamble identifier (ID), an UL Grant (uplink radio resource), a temporary C-RNTI (Temporary Cell - Radio Network Temporary Identifier), and a TAC (Time Alignment Command). Since one random access response may include random access response information for one or more terminals, the random access preamble identifier may be included to indicate which terminal the included UL Grant, temporary C-RNTI, and TAC are valid for. The random access preamble identifier may be an identifier for the random access preamble received by the base station. The TAC may be included as information for the terminal to adjust uplink synchronization. The random access response may be indicated by a random access identifier on the PDCCH, i.e., an RA-RNTI (Random Access - Radio Network Temporary Identifier).

[0078] Upon receiving a valid random access response, the terminal processes the information contained in the random access response and performs scheduled transmission to the base station. For example, the terminal applies TAC and stores a temporary C-RNTI. Furthermore, using the UL Grant, the terminal transmits data stored in its buffer or newly generated data to the base station. In this case, information that identifies the terminal must be included.

[0079] Finally, the terminal receives a downlink message for contention resolution.

[0080] <NR CORESET>

[0081] The downlink control channel in NR is transmitted in a CORESET (Control Resource Set) with a length of 1 to 3 symbols, and transmits uplink / downlink scheduling information, SFI (Slot format Index), and TPC (Transmit Power Control) information.

[0082] To ensure system flexibility, NR introduced the CORESET concept. CORESET (Control Resource Set) refers to time-frequency resources for downlink control signals. A terminal can decode control channel candidates using one or more search spaces within the CORESET time-frequency resources. A QCL (Quasi CoLocation) assumption is established for each CORESET, which is used to inform the characteristics of analog beam direction in addition to the delay spread, Doppler spread, Doppler shift, and average delay assumed by the conventional QCL.

[0083] Figure 7 is a drawing for explaining CORESET.

[0084] Referring to Figure 7, a CORESET can exist in various forms within the carrier bandwidth within a single slot, and in the time domain, a CORESET can consist of up to three OFDM symbols. In addition, a CORESET is defined as a multiple of six resource blocks up to the carrier bandwidth in the frequency domain.

[0085] The first CORESET is indicated via the MIB as part of the initial bandwidth part configuration, allowing the terminal to receive additional configuration and system information from the network. After establishing a connection with the base station, the terminal can receive and configure one or more CORESET information via RRC signaling.

[0086] In this specification, the terms frequency, frame, subframe, resource, resource block, region, band, subband, control channel, data channel, synchronization signal, various reference signals, various signals or various messages related to NR (New Radio) may be interpreted in the past or present meaning or in various meanings used in the future.

[0087] The present disclosure relates to a technology for transmitting an uplink control channel of a terminal to support full-duplex communication. In particular, the present disclosure proposes a technology for establishing and activating a terminal beam for uplink control channel transmission.

[0088] TDD (Time Division Duplex) is a duplexing method widely used in commercial New Radio (NR) and 5G mobile communication systems. In TDD, time-slot radio resources are divided into downlink and uplink slots. Typically, downlink slots are distributed at a higher rate than uplink slots, depending on the distribution ratio of uplink to downlink traffic. However, this limitation of uplink slots negatively impacts coverage and latency. Full duplex has recently attracted attention as a technology to address these issues.

[0089] Full duplex is a technology that simultaneously performs transmission and reception using the same time and frequency resources. Generally, simultaneous DL transmission and UL reception are being considered from the base station (gNB in ​​the case of 5G). However, this is not limited to this, and simultaneous DL reception and UL transmission can also be performed from the terminal side. In other words, both the base station and the terminal can support full duplex. However, unlike the base station, which is structurally prone to self-interference cancellation, the DL reception performance of the terminal is easily affected by self-interference of the UL transmission signal. Therefore, the case where the base station operates in full duplex and the terminal operates in half duplex is generally considered. Additionally, from the base station's perspective, to reduce the impact of self-interference, a subband non-overlapping full duplex method can be primarily considered, which performs DL transmission and UL reception simultaneously while distinguishing the frequency resources for DL ​​and UL transmission and reception.

[0090] FIG. 8 is a diagram for explaining an example of a UL subband setting in an arbitrary DL slot to which the present embodiment can be applied.

[0091] FIG. 9 is a diagram for explaining an example in which a UL subband is set differently in any DL slot to which the present embodiment can be applied.

[0092] Referring to FIGS. 8 and 9, a TDD configuration can be achieved in which DL slots and UL slots are arranged in a ratio of 4:1 in any NR frequency band (however, some symbols of the last DL slot are special slots containing flexible symbols for DL / UL transition). In this case, a UL subband can be set to support UL transmission of a terminal in some (or all) of the DL slots.

[0093] For example, when a UL subband is configured for a random DL slot, the UL subband may be configured at the center of the corresponding frequency band, as shown in FIG. 8. Alternatively, the UL subband may be configured at the edge of the corresponding frequency band, as shown in FIG. 9. A guard band may be configured between the UL subband and the DL subband in the corresponding slot. Additionally, frequency resources other than the UL subband and the guard band may be utilized as DL subbands for DL ​​transmission and reception based on existing slot / symbol configuration information.

[0094] That is, when the UL subband is set around the center of the frequency band as in Fig. 8, two guard bands are configured, one each above and below the UL subband. Similarly, two DL subbands can be configured, one each above and below the UL subband. Alternatively, when the UL subband is set around the edge of the frequency band as in Fig. 9, one guard band and one DL subband can be configured following the UL subband.

[0095] The UL-DL slot configuration defined in NR is defined to be performed on a cell-by-cell basis through cell-specific RRC signaling. That is, the pattern of DL symbols, UL symbols, and flexible symbols for a certain period is set through the RRC message 'tdd-UL-DL-ConfigurationCommon' for the corresponding UL-DL slot configuration. Additionally, only the flexible symbols set through the above 'tdd-UL-DL-ConfigurationCommon' can be reallocated to UL symbols, DL symbols, or flexible symbols for each UE through the UE-specific RRC signaling 'tdd-UL-DL-ConfigurationDedicated'. Alternatively, a method for indicating a dynamic slot format through the UE-group common PDCCH is also defined. For this purpose, NR also supports a method for indicating a dynamic slot format through DCI format 2_0.

[0096] According to the existing slot configuration method described above, any one symbol can be set or indicated as one of DL, UL, or Flexible. That is, FIGS. 8 and 9 are examples in which an arbitrary slot format is set to DDDSU through the existing slot configuration. D refers to a downlink slot, meaning that all OFDM symbols constituting the slot are set to DL. U refers to an uplink slot, meaning that all OFDM symbols constituting the slot are set to UL. S refers to a special slot, meaning a slot that includes a flexible symbol for DL / UL transition. Typically, in the case of a normal CP, the special slot can be configured with 12 DL symbols and 2 flexible symbols out of a total of 14 symbols. Alternatively, it can be configured with 10 DL symbols, 2 flexible symbols, and 2 UL symbols. That is, within any one TDD carrier, one symbol is configured or indicated as only one of DL, UL, or flexible.

[0097] However, if a UL subband is configured in any DL slot, DL transmission or UL transmission may occur simultaneously for each frequency resource in the symbol. In this specification, a DL slot or symbol including a UL subband or a UL slot or symbol including a DL subband is referred to as an SBFD (Subband Full Duplex) slot or SBFD (Subband Full Duplex) symbol. However, this is for convenience of explanation and is not limited to the term.

[0098] In addition, in this specification, a slot composed only of the SBFD symbols is referred to as an SBFD slot, and a slot composed only of symbols according to existing symbol settings (i.e., a slot composed only of symbols that do not include a UL subband, a DL subband, and a guardband) is referred to as a non-SBFD slot. Alternatively, a slot including at least one SBFD symbol may be referred to as an SBFD slot. As mentioned above, this is for convenience of explanation and is not limited to the terminology.

[0099] Fig. 10 is a drawing for explaining terminal operation according to one embodiment.

[0100] Referring to FIG. 10, a method (S1000) for a terminal to transmit an uplink control channel may include a step of receiving PUCCH (Physical Uplink Control Channel) configuration information from a base station (S1010).

[0101] For example, PUCCH configuration information may include information necessary for PUCCH transmission by a terminal. PUCCH configuration information may be received via a higher-layer message (e.g., an RRC message). PUCCH configuration information may include various information elements, parameters, and fields. For example, it may include a resource set for PUCCH transmission, PUCCH format information, PUCCH power control information, and spatial relationship information.

[0102] Here, spatial relationship information may include information regarding the configuration of the spatial relationship between a reference signal (RS) and the PUCCH. Spatial relationship information is used by the terminal to configure the PUCCH transmission beam. For example, based on spatial relationship information, the terminal can identify RS configurations that can be referenced for analog or digital preprocessing in the spatial domain required for PUCCH transmission.

[0103] For example, PUCCH configuration information may include two or more pieces of spatial relationship information. The PUCCH configuration information may include first spatial relationship information for a first type symbol and second spatial relationship information for a second type symbol, separately. Here, the first type symbol may refer to a symbol for which subband-based full-duplex communication is established. It may refer to the aforementioned SBFD symbol. Or, it may refer to an SBFD slot including an SBFD symbol. The second type symbol may refer to a symbol for which subband-based full-duplex communication is not established. It may refer to the aforementioned non-SBFD symbol. Or, it may refer to a non-SBFD slot including a non-SBFD symbol.

[0104] PUCCH configuration information may include first spatial relationship information for SBFD symbols and second spatial relationship information for non-SBFD symbols. The first spatial relationship information may be included and divided into two or more configurations. The second spatial relationship may also be included and divided into two or more configurations. In other words, PUCCH configuration information includes spatial relationship information, and the plurality of spatial relationship information may be divided into first spatial relationship information and second spatial relationship information.

[0105] As another example, the PUCCH configuration information may include first PUCCH configuration information including first spatial relationship information for a first type symbol and second PUCCH configuration information including second spatial relationship information for a second type symbol.

[0106] For example, the first spatial relationship information and the second spatial relationship information may be received as separate PUCCH configuration information. The first spatial relationship information may be included and divided into two or more configurations. The second spatial relationship information may also be included and divided into two or more configurations. In other words, the first PUCCH configuration information may include one or more pieces of first spatial relationship information. Furthermore, the second PUCCH configuration information may include one or more pieces of second spatial relationship information.

[0107] The spatial relationship information described above can be included separately as information elements, parameters, or fields.

[0108] The terminal can configure the received PUCCH configuration information. For example, the terminal can configure the received spatial relationship information by storing it in the terminal.

[0109] A method (S1000) for a terminal to transmit an uplink control channel may include a step of receiving activation information from a base station that indicates activation of spatial relationship information for determining an uplink control channel transmission beam based on PUCCH configuration information (S1020).

[0110] For example, a terminal may receive activation information from a base station indicating which spatial relationship information to activate. The activation information may be received via a MAC CE.

[0111] For example, the activation information may be divided into information for activating spatial relationship information of a first type symbol and information for activating spatial relationship information of a second type symbol. For example, the activation information may be divided into information for activating spatial relationship information for a first type symbol and information for activating spatial relationship information for a second type symbol. That is, the activation information for the spatial relationship information for a first type symbol is set to indicate activation of the spatial relationship information for the first type symbol. Similarly, the activation information for the spatial relationship information for a second type symbol is set to indicate activation of the spatial relationship information for the second type symbol.

[0112] As another example, the activation information may indicate whether to activate both the spatial relationship information of the first type symbol and the spatial relationship information of the second type symbol. In this case, the activation information may be set to indicate whether to activate both the spatial relationship information of the first type symbol and the spatial relationship information of the second type symbol.

[0113] A method (S1000) for a terminal to transmit an uplink control channel may include a step of determining an uplink control channel transmission beam based on spatial relationship information indicated by activation information (S1030).

[0114] For example, a terminal can use activated spatial relationship information to determine an uplink control channel transmission beam in a symbol transmitting a PUCCH. Based on the activation information, the terminal can activate specific spatial relationship information and use an RS (Reference Signal) configuration that can be referenced for preprocessing based on analog or digital processing in the spatial domain according to the activated spatial relationship information. Through this, the terminal can determine an uplink control channel transmission beam depending on the type of symbol transmitting the PUCCH.

[0115] A method (S1000) for a terminal to transmit an uplink control channel may include a step of transmitting an uplink control channel to a base station using an uplink control channel transmission beam (S1040).

[0116] For example, an uplink control channel transmission beam can be determined separately for each of a first type symbol in which subband-based full duplex communication is established and a second type symbol in which subband-based full duplex communication is not established.

[0117] Additionally, the uplink control channel transmission beam can be determined based on spatial relationship information set or activated for a symbol in which the uplink control channel is transmitted.

[0118] Alternatively, the uplink control channel transmission beam may be determined based on a reference signal transmitted or received in the same type as the type of symbol through which the uplink control channel is transmitted, if the configuration of the reference signal included in the spatial relationship information is applied to both the first type symbol and the second type symbol. For example, the configuration of the reference signal included in the spatial relationship information may be set to be applied to both the first type symbol and the second type symbol. In this case, the terminal may determine the uplink control channel transmission beam by applying the same configuration as the reference signal transmitted or received in the type of symbol through which the uplink control channel (PUCCH) is transmitted, if the type of the symbol through which the uplink control channel (PUCCH) is transmitted is the first type. Similarly, the terminal may determine the uplink control channel transmission beam by applying the same configuration as the reference signal transmitted or received in the type through which the uplink control channel (PUCCH) is transmitted, if the type of the symbol through which the uplink control channel (PUCCH) is transmitted is the first type. Here, the reference signal may be at least one of CSI-RS, SSB, and SRS. That is, when an uplink control channel is transmitted in an SBFD symbol, the uplink control channel transmission beam is determined based on the reference signal transmitted or received in the SBFD symbol. Similarly, when an uplink control channel is transmitted in a non-SBFD symbol, the uplink control channel transmission beam is determined based on the reference signal transmitted or received in the non-SBFD symbol.

[0119] Through this operation, when subband-based SBFD symbols or slots are configured on a symbol or slot basis in full-duplex communication (SBFD), the PUCCH can be transmitted by determining the uplink control channel transmission beam in each non-SBFD symbol / slot and SBFD symbol / slot. Therefore, the uplink signal can be transmitted using the optimal uplink control channel transmission beam on a symbol or slot basis.

[0120] Fig. 11 is a diagram for explaining base station operation according to one embodiment.

[0121] Referring to FIG. 11, a method (S1100) for a base station to control transmission of an uplink control channel of a terminal may include a step of transmitting PUCCH (Physical Uplink Control Channel) configuration information to the terminal (S1110).

[0122] For example, PUCCH configuration information may include information necessary for PUCCH transmission by a terminal. PUCCH configuration information may be transmitted via a higher-layer message (e.g., an RRC message). PUCCH configuration information may include various information elements, parameters, and fields. For example, it may include a resource set for PUCCH transmission, PUCCH format information, PUCCH power control information, and spatial relationship information.

[0123] Here, spatial relationship information may include information regarding the configuration of the spatial relationship between a reference signal (RS) and the PUCCH. Spatial relationship information is used by the terminal to configure the PUCCH transmission beam. For example, based on spatial relationship information, the terminal can identify RS configurations that can be referenced for analog or digital preprocessing in the spatial domain required for PUCCH transmission.

[0124] For example, PUCCH configuration information may include two or more pieces of spatial relationship information. PUCCH configuration information may include first spatial relationship information for a first type symbol and second spatial relationship information for a second type symbol.

[0125] PUCCH configuration information may include first spatial relationship information for SBFD symbols and second spatial relationship information for non-SBFD symbols. The first spatial relationship information may be included and divided into two or more configurations. The second spatial relationship may also be included and divided into two or more configurations. In other words, PUCCH configuration information includes spatial relationship information, and the plurality of spatial relationship information may be divided into first spatial relationship information and second spatial relationship information.

[0126] As another example, the PUCCH configuration information may include first PUCCH configuration information including first spatial relationship information for a first type symbol and second PUCCH configuration information including second spatial relationship information for a second type symbol.

[0127] For example, the first spatial relationship information and the second spatial relationship information may be received as separate PUCCH configuration information. The first spatial relationship information may be included and divided into two or more configurations. The second spatial relationship information may also be included and divided into two or more configurations. In other words, the first PUCCH configuration information may include one or more pieces of first spatial relationship information. Furthermore, the second PUCCH configuration information may include one or more pieces of second spatial relationship information.

[0128] The spatial relationship information described above can be included separately as information elements, parameters, or fields.

[0129] The terminal can configure the received PUCCH configuration information. For example, the terminal can configure the received spatial relationship information by storing it in the terminal.

[0130] A method (S1100) for a base station to control transmission of an uplink control channel of a terminal may include a step of transmitting, to the terminal, activation information indicating activation of spatial relationship information for determining an uplink control channel transmission beam based on PUCCH configuration information (S1120).

[0131] For example, a base station may transmit activation information to a terminal indicating which spatial relationship information to activate. The activation information may be transmitted via MAC CE.

[0132] For example, the activation information may be divided into information for activating spatial relationship information of a first type symbol and information for activating spatial relationship information of a second type symbol. For example, the activation information may be divided into information for activating spatial relationship information for a first type symbol and information for activating spatial relationship information for a second type symbol. That is, the activation information for the spatial relationship information for a first type symbol is set to indicate activation of the spatial relationship information for the first type symbol. Similarly, the activation information for the spatial relationship information for a second type symbol is set to indicate activation of the spatial relationship information for the second type symbol.

[0133] As another example, the activation information may indicate whether to activate both the spatial relationship information of the first type symbol and the spatial relationship information of the second type symbol. In this case, the activation information may be set to indicate whether to activate both the spatial relationship information of the first type symbol and the spatial relationship information of the second type symbol.

[0134] A method (S1100) in which a base station controls transmission of an uplink control channel of a terminal may include a step of receiving an uplink control channel from a terminal using an uplink control channel transmission beam determined based on spatial relationship information indicated by activation information (S1130).

[0135] The uplink control channel transmission beam can be separately determined for each of the first type symbols in which subband-based full duplex communication is established and the second type symbols in which subband-based full duplex communication is not established.

[0136] For example, a terminal can use activated spatial relationship information to determine an uplink control channel transmission beam in a symbol transmitting a PUCCH. Based on the activation information, the terminal can activate specific spatial relationship information and use an RS (Reference Signal) configuration that can be referenced for preprocessing based on analog or digital processing in the spatial domain according to the activated spatial relationship information. Through this, the terminal can determine an uplink control channel transmission beam depending on the type of symbol transmitting the PUCCH.

[0137] The uplink control channel transmission beam can be separately determined for each of the first type symbols in which subband-based full duplex communication is established and the second type symbols in which subband-based full duplex communication is not established.

[0138] Additionally, the uplink control channel transmission beam can be determined based on spatial relationship information set or activated for a symbol in which the uplink control channel is transmitted.

[0139] Alternatively, the uplink control channel transmission beam may be determined based on a reference signal transmitted or received in the same type as the type of symbol through which the uplink control channel is transmitted, if the configuration of the reference signal included in the spatial relationship information is applied to both the first type symbol and the second type symbol. For example, the configuration of the reference signal included in the spatial relationship information may be set to be applied to both the first type symbol and the second type symbol. In this case, the terminal may determine the uplink control channel transmission beam by applying the same configuration as the reference signal transmitted or received in the type of symbol through which the uplink control channel (PUCCH) is transmitted, if the type of the symbol through which the uplink control channel (PUCCH) is transmitted is the first type. Similarly, the terminal may determine the uplink control channel transmission beam by applying the same configuration as the reference signal transmitted or received in the type through which the uplink control channel (PUCCH) is transmitted, if the type of the symbol through which the uplink control channel (PUCCH) is transmitted is the first type. Here, the reference signal may be at least one of CSI-RS, SSB, and SRS.

[0140] That is, when an uplink control channel is transmitted in an SBFD symbol, the uplink control channel transmission beam is determined based on the reference signal transmitted or received in the SBFD symbol. Similarly, when an uplink control channel is transmitted in a non-SBFD symbol, the uplink control channel transmission beam is determined based on the reference signal transmitted or received in the non-SBFD symbol.

[0141] The base station can receive the PUCCH transmitted by the terminal through the determined uplink control channel transmission beam.

[0142] Through this operation, when subband-based SBFD symbols or slots are configured on a symbol or slot basis in full-duplex communication (SBFD), the PUCCH can be received through the uplink control channel transmission beams determined in the non-SBFD symbols / slots and the SBFD symbols / slots, respectively. Therefore, the uplink signal can be received using the optimal uplink control channel transmission beam on a symbol or slot basis.

[0143]

[0144] Hereinafter, more specific embodiments of the operations of the aforementioned terminal and base station will be described. In the case where any PUCCH transmission is performed via an SBFD symbol, an embodiment of setting up and activating a separate transmission beam is described to distinguish it from PUCCH transmission performed via an existing non-SBFD symbol. In the following, an SBFD symbol means a first type symbol, and a non-SBFD symbol means a second type symbol. In addition, for the convenience of explanation, the description is mainly based on symbols, but the same can be applied to slots. For example, an SBFD symbol can be applied by being replaced with an SBFD slot. Similarly, a non-SBFD symbol can be applied by being replaced with a non-SBFD slot.

[0145] The PUCCH transmission beam setting at the terminal can be used in various terms such as PUCCH Tx beam setting, PUCCH Tx spatial setting / filtering, etc. This is done by setting and activating an RS (Reference Signal) that can be referenced for analog or digital processing-based preprocessing in the spatial domain required when the terminal transmits PUCCH to the base station. Specifically, the base station sets one or more PUCCH-spatialrelationInfo including reference signal setting information to be referenced for spatial setting when the terminal transmits PUCCH, and activates one of the set PUCCH-spatialrelationInfo spatialrelationinfo through MAC CE signaling, thereby providing RS information to be referenced for spatial setting when the terminal transmits PUCCH.

[0146] However, as described above, when the base station supports the SBFD operation, the antenna settings of the base station may be different for non-SBFD symbols in which all antennas perform only one of transmission or reception operations and for SBFD symbols in which antennas must be divided to perform simultaneous transmission and reception. Accordingly, separate spatial settings may be required when PUCCH transmission at the terminal is performed through non-SBFD symbols and through SBFD symbols. In the present disclosure, for this purpose, when applying spatialrelationInfo for PUCCH transmission at the terminal, an embodiment is proposed in which different spatialrelationInfo is set or activated depending on the type / kind of the symbol on which the PUCCH transmission is performed.

[0147] That is, depending on whether a symbol for PUCCH transmission from an arbitrary terminal is composed of the non-SBFD symbol(s) or the SBFD symbol(s), different spatialrelationInfo configuration information or activation information can be applied. To this end, when setting spatialrelationInfo included in PUCCH-config for an arbitrary terminal, the base station can include PUCCH-spatialrelationInfo for non-SBFD symbols and PUCCH-spatialrelationInfo for SBFD symbols, respectively. Alternatively, when activating PUCCH-spatialrelationInfo for an arbitrary terminal through MAC CE signaling, PUCCH-spatialrelation activation information for non-SBFD symbols and PUCCH-spatialrelation activation information for SBFD symbols can be included, respectively.

[0148] Accordingly, the terminal can set a transmission beam for the PUCCH transmission based on separately set PUCCH-spatialrelationInfo information or separately activated PUCCH-spatialrelation information for PUCCH transmission through the SBFD symbol and PUCCH transmission through the non-SBFD symbol.

[0149] Individual examples are described in more detail.

[0150] As a method for distinguishing PUCCH transmission beams in SBFD symbols and non-SBFD symbols, when configuring PUCCH-spatialrelationinfo for PUCCH transmission of an arbitrary terminal, one PUCCH-spatialrelationInfo may include a spatial setting value for PUCCH transmission in a non-SBFD symbol and a spatial setting value for PUCCH transmission in an SBFD symbol, respectively. That is, when configuring PUCCH-SpatialRelationInfo, which is an RRC parameter including spatial setting information for PUCCH transmission of the terminal, one PUCCH-spatialrelationinfo may include referencesignal information for PUCCH transmission in a non-SBFD symbol (e.g., an existing ReferenceSignal configuration field) and referencesignal information for PUCCH transmission in an SBFD symbol (e.g., a new ReferenceSignal_SBFD configuration field). At this time, the RS settings to be referenced for spatial settings for PUCCH transmission in non-SBFD symbols and SBFD symbols, respectively, can be limited to RSs that are transmitted through the same symbol type. That is, the reference signal settings for PUCCH transmission in non-SBFD symbols can be limited to SSB, CSI-RS, or SRS that are set to be transmitted through non-SBFD symbols.

[0151] Alternatively, when any SSB, CSI-RS reception or SRS transmission includes both non-SBFD symbols and SBFD symbols, the spatial setting can be defined at the terminal by referring only to the SSB, CSI-RS received through the non-SBFD symbol or the SRS transmitted through the non-SBFD symbol. Conversely, the reference signal for the spatial setting of the terminal to be applied when transmitting PUCCH in the SBFD symbol can be limited to the SSB or CSI-RS received from the base station through the SBFD symbol, or the SRS setting transmitted to the base station through the SBFD symbol. Alternatively, when any SSB, CSI-RS reception or SRS transmission includes both non-SBFD symbols and SBFD symbols, the spatial setting can be defined at the terminal by referring only to the SSB, CSI-RS received through the SBFD symbol or the SRS transmitted through the SBFD symbol.

[0152] In this way, any PUCCH-spatialrelationinfo can include both spatialrelation information for PUCCH transmission in a non-SBFD symbol (i.e., referencesignal information to be referenced when transmitting PUCCH in a non-SBFD symbol) and spatialrelation information for PUCCH transmission in a separate SBFD symbol (i.e., referencesignal information to be referenced when transmitting PUCCH in an SBFD symbol). In this case, if the corresponding PUCCH-spatialrelationinfo is activated through the PUCCH spatial relation activation / deactivation MAC CE, the UE can refer to the referencesignal setting for the non-SBFD symbol included in the PUCCH-spatialrelationinfo as a reference signal for spatial setting when transmitting PUCCH in each non-SBFD symbol. In addition, when transmitting PUCCH in an SBFD symbol, the UE can refer to the referencesignal setting for the SBFD symbol included in the PUCCH-spatialrelationinfo as a reference signal for spatial setting.

[0153] That is, one PUCCH-spatialrelationInfo can include a spatial relation configuration for a pair of SBFD symbols and a spatial relation configuration for a non-SBFD symbol. By activating the corresponding PUCCH-spatialrelation through MAC CE signaling, the corresponding UE can activate the spatial relation configuration for PUCCH transmission in the SBFD symbol and the spatial relation configuration for PUCCH transmission in the non-SBFD symbol, respectively.

[0154]

[0155] Alternatively, when configuring PUCCH-spatialrelationInfo, PUCCH-spatialrelationInfo information for SBFD symbols and PUCCH-spatialrelationInfo for non-SBFD symbols may be configured separately. That is, any PUCCH-config may include PUCCH-spatialrelationInfo information for SBFD symbols and PUCCH-spatialrelationInfo for non-SBFD symbols separately.

[0156] Alternatively, the PUCCH-config configuration itself can be configured to distinguish between PUCCH-config for SBFD symbols and PUCCH-config for non-SBFD symbols. Accordingly, the PUCCH-spatialrelationInfo configuration may also be configured such that the PUCCH-spatialrelationInfo included in the PUCCH-config for SBFD symbols is spatialrelation configuration information for PUCCH transmission via SBFD symbols, and the PUCCH-spatialrelationInfo included in the PUCCH-config for non-SBFD symbols is spatialrelation configuration information for PUCCH transmission via non-SBFD symbols.

[0157] In this way, when PUCCH-spatialrelationInfo for SBFD symbols and PUCCH-spatialrelationInfo for non-SBFD symbols are set separately, the terminal can separately receive spatialrelation activation information for PUCCH transmission in SBFD symbols and spatialrelation activation information for PUCCH transmission in non-SBFD symbols. That is, the base station can activate spatialrelation activation information for PUCCH transmission in SBFD symbols and spatialrelation activation information for PUCCH transmission in non-SBFD symbols for any terminal through separate MAC CE signaling, or one MAC CE signaling can include all of the separate activation information.

[0158] Alternatively, one PUCCH-spatialrelationinfo may include only one reference signal configuration information as before, but may set a reference signal that includes both transmission or reception in the corresponding reference signal SBFD symbol and non-SBFD symbol, and by activating the corresponding spatialrelation, any terminal may activate PUCCH spatial setting information through the SBFD symbol and PUCCH spatial setting information through the non-SBFD symbol.

[0159] Accordingly, in the case where the PUCCH-spatialrelationInfo, which is referenced by the reference signal setting including both non-SBFD symbols and SBFD symbols in the terminal, is activated through the MAC CE signaling, spatial setting for PUCCH transmission can be performed by referring to only the instances that are received or transmitted in the same symbol type among all reference signal instances in which the reference signal set according to the symbol type in which PUCCH transmission is performed is transmitted or received. That is, in the case where the RS included in the PUCCH-spatialrelationInfo activated through the MAC CE signaling is an RS set to be received or transmitted in an SBFD symbol and a non-SBFD symbol, when the terminal transmits any PUCCH, if the symbol in which the PUCCH transmission is performed is a non-SBFD symbol, spatial setting for PUCCH transmission is performed by referring only to the RS transmission or reception instances in the non-SBFD symbol among the RSs. Conversely, if the symbol through which PUCCH transmission is performed is an SBFD symbol, spatial setting for PUCCH transmission can be performed by referring only to RS transmission or reception instances in the SBFD symbol among the RSs.

[0160]

[0161] Alternatively, the base station can define to activate spatial relation for PUCCH transmission in SBFD symbols separately from spatial relation activation for PUCCH transmission in non-SBFD symbols through MAC CE signaling. That is, a new MAC CE signaling for PUCCH spatial relation activation / deactivation, 'PUCCH spatial relation activation / deactivation for SBFD', can be defined to activate spatial relation information for PUCCH transmission in non-SBFD symbols and spatial relation information for PUCCH transmission in SBFD symbols, respectively. For this purpose, the MAC CE signaling can include, in addition to the existing serving cell ID, BWP ID, and PUCCH resource ID, a bitmap area for indicating the spatial relation info ID to be activated when PUCCH transmission in non-SBFD symbols, and additionally a bitmap area for indicating the spatial relation info ID to be activated when PUCCH transmission in SBFD symbols. Additionally, it may include an indicator information area to indicate whether separate spatial relation info ID activation information for PUCCH transmission in the corresponding SBFD symbol is included.

[0162]

[0163] Meanwhile, the above-described embodiments can be configured in any combination to form the present disclosure. For this purpose, the base station can perform necessary settings or instructions. This means that the base station transmits the corresponding setting information to the terminal via UE-specific or cell-specific higher layer signaling, and the terminal receives the corresponding higher layer signaling to obtain the corresponding setting information. Alternatively, the base station performing the necessary settings or instructions may include all combinations of i) the base station directly indicating the corresponding setting information via MAC CE signaling or L1 control signaling, ii) one or more settings are made via the RRC signaling, and among these, specific setting information to be applied is activated via MAC CE signaling or L1 control signaling, or iii) all combinations of indicating and all combinations of receiving one or more setting information via RRC signaling from the terminal and additionally receiving activation information or instruction information for specific setting information from the base station via MAC CE signaling or L1 control signaling.

[0164] Below, the terminal and base station devices capable of performing the aforementioned embodiments will be described again, focusing on their configuration.

[0165]

[0166] Fig. 12 is a drawing showing the configuration of a terminal according to another embodiment.

[0167] Referring to FIG. 12, a terminal (1200) transmitting an uplink control channel may include a receiving unit (1230) that receives activation information indicating activation of spatial relationship information for determining an uplink control channel transmission beam based on PUCCH (Physical Uplink Control Channel) configuration information and PUCCH configuration information from a base station, a control unit (1210) that determines an uplink control channel transmission beam based on the spatial relationship information indicated by the activation information, and a transmitting unit (1220) that transmits an uplink control channel to the base station using the uplink control channel transmission beam. Here, the uplink control channel transmission beam is determined separately for each of a first type symbol in which subband-based full duplex communication is set and a second type symbol in which subband-based full duplex communication is not set.

[0168] For example, PUCCH configuration information may include information necessary for PUCCH transmission by a terminal. PUCCH configuration information may be received via a higher-layer message (e.g., an RRC message). PUCCH configuration information may include various information elements, parameters, and fields. For example, it may include a resource set for PUCCH transmission, PUCCH format information, PUCCH power control information, and spatial relationship information.

[0169] Here, the spatial relationship information may include information regarding the configuration of the spatial relationship between a reference signal (RS) and a PUCCH. The spatial relationship information is used by the terminal to configure a PUCCH transmission beam. For example, the control unit (1210) may identify RS settings that can be referenced for analog or digital preprocessing in the spatial domain required for PUCCH transmission based on the spatial relationship information.

[0170] For example, PUCCH configuration information may include two or more pieces of spatial relationship information. PUCCH configuration information may include first spatial relationship information for a first type symbol and second spatial relationship information for a second type symbol.

[0171] PUCCH configuration information may include first spatial relationship information for SBFD symbols and second spatial relationship information for non-SBFD symbols. The first spatial relationship information may be included and divided into two or more configurations. The second spatial relationship may also be included and divided into two or more configurations. In other words, PUCCH configuration information includes spatial relationship information, and the plurality of spatial relationship information may be divided into first spatial relationship information and second spatial relationship information.

[0172] As another example, the PUCCH configuration information may include first PUCCH configuration information including first spatial relationship information for a first type symbol and second PUCCH configuration information including second spatial relationship information for a second type symbol.

[0173] For example, the first spatial relationship information and the second spatial relationship information may be received as separate PUCCH configuration information. The first spatial relationship information may be included and divided into two or more configurations. The second spatial relationship information may also be included and divided into two or more configurations. In other words, the first PUCCH configuration information may include one or more pieces of first spatial relationship information. Furthermore, the second PUCCH configuration information may include one or more pieces of second spatial relationship information.

[0174] The spatial relationship information described above can be included separately as information elements, parameters, or fields.

[0175] The control unit (1210) can configure the received PUCCH configuration information in the terminal. For example, the control unit (1210) can store and configure all received spatial relationship information in the terminal.

[0176] The receiving unit (1230) can receive activation information from the base station indicating which spatial relationship information to activate. The activation information can be received via MAC CE.

[0177] For example, the activation information may be divided into information for activating spatial relationship information of a first type symbol and information for activating spatial relationship information of a second type symbol. For example, the activation information may be divided into information for activating spatial relationship information for a first type symbol and information for activating spatial relationship information for a second type symbol. That is, the activation information for the spatial relationship information for a first type symbol is set to indicate activation of the spatial relationship information for the first type symbol. Similarly, the activation information for the spatial relationship information for a second type symbol is set to indicate activation of the spatial relationship information for the second type symbol.

[0178] As another example, the activation information may indicate whether to activate both the spatial relationship information of the first type symbol and the spatial relationship information of the second type symbol. In this case, the activation information may be set to indicate whether to activate both the spatial relationship information of the first type symbol and the spatial relationship information of the second type symbol.

[0179] In addition, the control unit (1210) can determine an uplink control channel transmission beam in a symbol transmitting a PUCCH using the activated spatial relationship information. The control unit (1210) can activate specific spatial relationship information based on the activation information and use an RS (Reference Signal) setting that can be referenced for preprocessing based on analog or digital processing in the spatial domain according to the activated spatial relationship information. Through this, the control unit (1210) can determine an uplink control channel transmission beam according to the type of the symbol transmitting the PUCCH.

[0180] The uplink control channel transmission beam can be separately determined for each of the first type symbols in which subband-based full duplex communication is established and the second type symbols in which subband-based full duplex communication is not established.

[0181] Additionally, the uplink control channel transmission beam can be determined based on spatial relationship information set or activated for a symbol in which the uplink control channel is transmitted.

[0182] Alternatively, the uplink control channel transmission beam may be determined based on a reference signal transmitted or received in the same type as the type of symbol through which the uplink control channel is transmitted, if the configuration of the reference signal included in the spatial relationship information is applied to both the first type symbol and the second type symbol. For example, the configuration of the reference signal included in the spatial relationship information may be set to be applied to both the first type symbol and the second type symbol. In this case, the terminal may determine the uplink control channel transmission beam by applying the same configuration as the reference signal transmitted or received in the corresponding type when the type of the symbol through which the uplink control channel (PUCCH) is transmitted is the first type. Similarly,

[0183] The control unit (1210) may determine an uplink control channel transmission beam by applying the same configuration as a reference signal transmitted or received in a symbol type in which an uplink control channel (PUCCH) is transmitted is the first type. Here, the reference signal may be at least one of CSI-RS, SSB, and SRS. That is, when an uplink control channel is transmitted in an SBFD symbol, an uplink control channel transmission beam is determined based on a reference signal transmitted or received in the SBFD symbol. Similarly, when an uplink control channel is transmitted in a non-SBFD symbol, an uplink control channel transmission beam is determined based on a reference signal transmitted or received in the non-SBFD symbol.

[0184] In addition, the control unit (1210) controls the overall operation of the terminal (1200) according to the operation for uplink control channel transmission required to perform the aforementioned disclosure.

[0185] The transmitter (1220) and receiver (1230) are used to transmit and receive signals, messages, and data necessary for performing the aforementioned disclosure to and from the base station.

[0186] Fig. 13 is a drawing showing the configuration of a base station according to another embodiment.

[0187] Referring to FIG. 13, a base station (1300) for controlling uplink control channel transmission of a terminal may include a transmitter (1320) for transmitting activation information indicating activation of spatial relationship information for determining an uplink control channel transmission beam based on PUCCH (Physical Uplink Control Channel) configuration information and PUCCH configuration information to the terminal, and a receiver (1330) for receiving an uplink control channel from the terminal using an uplink control channel transmission beam determined based on the spatial relationship information indicated by the activation information. The uplink control channel transmission beam may be determined separately for each of a first type symbol in which subband-based full duplex communication is set and a second type symbol in which subband-based full duplex communication is not set.

[0188] For example, PUCCH configuration information may include information necessary for PUCCH transmission by a terminal. PUCCH configuration information may be transmitted via a higher-layer message (e.g., an RRC message). PUCCH configuration information may include various information elements, parameters, and fields. For example, it may include a resource set for PUCCH transmission, PUCCH format information, PUCCH power control information, and spatial relationship information.

[0189] Here, spatial relationship information may include information regarding the configuration of the spatial relationship between a reference signal (RS) and the PUCCH. Spatial relationship information is used by the terminal to configure the PUCCH transmission beam. For example, based on spatial relationship information, the terminal can identify RS configurations that can be referenced for analog or digital preprocessing in the spatial domain required for PUCCH transmission.

[0190] For example, PUCCH configuration information may include two or more pieces of spatial relationship information. PUCCH configuration information may include first spatial relationship information for a first type symbol and second spatial relationship information for a second type symbol.

[0191] PUCCH configuration information may include first spatial relationship information for SBFD symbols and second spatial relationship information for non-SBFD symbols. The first spatial relationship information may be included and divided into two or more configurations. The second spatial relationship may also be included and divided into two or more configurations. In other words, PUCCH configuration information includes spatial relationship information, and the plurality of spatial relationship information may be divided into first spatial relationship information and second spatial relationship information.

[0192] As another example, the PUCCH configuration information may include first PUCCH configuration information including first spatial relationship information for a first type symbol and second PUCCH configuration information including second spatial relationship information for a second type symbol.

[0193] For example, the first spatial relationship information and the second spatial relationship information may be received as separate PUCCH configuration information. The first spatial relationship information may be included and divided into two or more configurations. The second spatial relationship information may also be included and divided into two or more configurations. In other words, the first PUCCH configuration information may include one or more pieces of first spatial relationship information. Furthermore, the second PUCCH configuration information may include one or more pieces of second spatial relationship information.

[0194] The spatial relationship information described above can be included separately as information elements, parameters, or fields.

[0195] The transmitter (1320) can transmit activation information indicating which spatial relationship information to activate to the terminal. The activation information can be transmitted via MAC CE.

[0196] For example, the activation information may be divided into information for activating spatial relationship information of a first type symbol and information for activating spatial relationship information of a second type symbol. For example, the activation information may be divided into information for activating spatial relationship information for a first type symbol and information for activating spatial relationship information for a second type symbol. That is, the activation information for the spatial relationship information for a first type symbol is set to indicate activation of the spatial relationship information for the first type symbol. Similarly, the activation information for the spatial relationship information for a second type symbol is set to indicate activation of the spatial relationship information for the second type symbol.

[0197] As another example, the activation information may indicate whether to activate both the spatial relationship information of the first type symbol and the spatial relationship information of the second type symbol. In this case, the activation information may be set to indicate whether to activate both the spatial relationship information of the first type symbol and the spatial relationship information of the second type symbol.

[0198] The uplink control channel transmission beam can be separately determined for each of the first type symbols in which subband-based full duplex communication is established and the second type symbols in which subband-based full duplex communication is not established.

[0199] For example, a terminal can use activated spatial relationship information to determine an uplink control channel transmission beam in a symbol transmitting a PUCCH. Based on the activation information, the terminal can activate specific spatial relationship information and use an RS (Reference Signal) configuration that can be referenced for preprocessing based on analog or digital processing in the spatial domain according to the activated spatial relationship information. Through this, the terminal can determine an uplink control channel transmission beam depending on the type of symbol transmitting the PUCCH.

[0200] The uplink control channel transmission beam can be separately determined for each of the first type symbols in which subband-based full duplex communication is established and the second type symbols in which subband-based full duplex communication is not established.

[0201] Additionally, the uplink control channel transmission beam can be determined based on spatial relationship information set or activated for a symbol in which the uplink control channel is transmitted.

[0202] Alternatively, the uplink control channel transmission beam may be determined based on a reference signal transmitted or received in the same type as the type of symbol through which the uplink control channel is transmitted, if the configuration of the reference signal included in the spatial relationship information is applied to both the first type symbol and the second type symbol. For example, the configuration of the reference signal included in the spatial relationship information may be set to be applied to both the first type symbol and the second type symbol. In this case, the terminal may determine the uplink control channel transmission beam by applying the same configuration as the reference signal transmitted or received in the type of symbol through which the uplink control channel (PUCCH) is transmitted, if the type of the symbol through which the uplink control channel (PUCCH) is transmitted is the first type. Similarly, the terminal may determine the uplink control channel transmission beam by applying the same configuration as the reference signal transmitted or received in the type through which the uplink control channel (PUCCH) is transmitted, if the type of the symbol through which the uplink control channel (PUCCH) is transmitted is the first type. Here, the reference signal may be at least one of CSI-RS, SSB, and SRS.

[0203] That is, when an uplink control channel is transmitted in an SBFD symbol, the uplink control channel transmission beam is determined based on the reference signal transmitted or received in the SBFD symbol. Similarly, when an uplink control channel is transmitted in a non-SBFD symbol, the uplink control channel transmission beam is determined based on the reference signal transmitted or received in the non-SBFD symbol.

[0204] In addition, the control unit (1310) controls the overall operation of the base station (1300) to control the uplink control channel transmission of the terminal required to perform the aforementioned disclosure.

[0205] The transmitter (1320) and receiver (1330) are used to transmit and receive signals, messages, and data necessary for performing the aforementioned disclosure to and from the terminal.

[0206] The above-described embodiments may be supported by standard documents disclosed in at least one of the wireless access systems, IEEE 802, 3GPP, and 3GPP2. That is, steps, components, and parts not described in the present embodiments to clearly illustrate the technical concepts herein may be supported by the above-described standard documents. Furthermore, all terms disclosed in this specification may be explained by the above-described standard documents.

[0207] The embodiments described above may be implemented through various means. For example, the embodiments may be implemented through hardware, firmware, software, or a combination thereof.

[0208] In the case of hardware implementation, the method according to the present embodiments may be implemented by one or more ASICs (Application Specific Integrated Circuits), DSPs (Digital Signal Processors), DSPDs (Digital Signal Processing Devices), PLDs (Programmable Logic Devices), FPGAs (Field Programmable Gate Arrays), processors, controllers, microcontrollers, or microprocessors.

[0209] When implemented using firmware or software, the methods according to the present embodiments may be implemented in the form of devices, procedures, or functions that perform the functions or operations described above. The software code may be stored in a memory unit and executed by a processor. The memory unit may be located within or outside the processor and may exchange data with the processor using various known means.

[0210] Additionally, terms such as "system," "processor," "controller," "component," "module," "interface," "model," or "unit" as described above may generally refer to a computer-related entity, such as hardware, a combination of hardware and software, software, or software in execution. For example, the aforementioned components may be, but are not limited to, a process driven by a processor, a processor, a controller, a control processor, an object, a thread of execution, a program, and / or a computer. For example, both an application running on a controller or a processor and the controller or the processor may be components. One or more components may be within a process and / or thread of execution, and the components may be located on a single device (e.g., a system, a computing device, etc.) or distributed across two or more devices.

[0211] The above description is merely an illustrative example of the technical idea of ​​the present disclosure, and those skilled in the art to which the present disclosure pertains will appreciate that various modifications and variations can be made without departing from the essential characteristics of the technical idea of ​​the present disclosure. In addition, the present embodiments are not intended to limit the technical idea of ​​the present disclosure but rather to explain it, and therefore the scope of the technical idea of ​​the present disclosure is not limited by these embodiments. The scope of protection of the present disclosure should be interpreted by the claims below, and all technical ideas within a scope equivalent thereto should be interpreted as being included within the scope of the rights of the present disclosure.

[0212]

[0213] CROSS-REFERENCE TO RELATED APPLICATION

[0214] This patent application claims priority under 35 USC §119(a) to Korean Patent Application No. 10-2024-0016025, filed in Korea on February 1, 2024, and Korean Patent Application No. 10-2025-0010815, filed in Korea on January 24, 2025, the entire contents of which are incorporated herein by reference. In addition, this patent application claims priority in countries other than the United States for the same reasons, the entire contents of which are incorporated herein by reference.

Claims

1. In a method for a terminal to transmit an uplink control channel, A step of receiving PUCCH (Physical Uplink Control Channel) configuration information from a base station; A step of receiving activation information from the base station that indicates activation of spatial relationship information for determining an uplink control channel transmission beam based on the PUCCH configuration information; A step of determining the uplink control channel transmission beam based on the spatial relationship information indicated by the activation information; and Including a step of transmitting the uplink control channel to the base station using the uplink control channel transmission beam, A method in which the above uplink control channel transmission beam is separately determined for each of a first type symbol in which subband-based full duplex communication is established and a second type symbol in which the subband-based full duplex communication is not established.

2. In paragraph 1, The above PUCCH configuration information is: Including two or more of the above spatial relationship information, A method for distinguishing and including first spatial relationship information for the first type symbol and second spatial relationship information for the second type symbol.

3. In paragraph 1, The above PUCCH configuration information is: A method comprising first PUCCH configuration information including first spatial relationship information for the first type symbol and second PUCCH configuration information including second spatial relationship information for the second type symbol.

4. In paragraph 1, The above activation information is, A method for dividing into information for activating spatial relationship information of the first type symbol and information for activating spatial relationship information of the second type symbol.

5. In paragraph 1, The above uplink control channel transmission beam is, A method in which the above uplink control channel is determined based on the spatial relationship information set or activated for the symbol transmitted.

6. In paragraph 1, The above uplink control channel transmission beam is, A method in which a reference signal configuration included in the above spatial relationship information is applied to both the first type symbol and the second type symbol, based on a reference signal transmitted or received in the same type as the type of symbol through which the uplink control channel transmission is performed.

7. In a method for a base station to control transmission of an uplink control channel of a terminal, A step of transmitting PUCCH (Physical Uplink Control Channel) configuration information to a terminal; A step of transmitting activation information indicating activation of spatial relationship information for determining an uplink control channel transmission beam based on the PUCCH configuration information to the terminal; and A step of receiving the uplink control channel from the terminal using the uplink control channel transmission beam determined based on the spatial relationship information indicated by the activation information, A method in which the above uplink control channel transmission beam is separately determined for each of a first type symbol in which subband-based full duplex communication is established and a second type symbol in which the subband-based full duplex communication is not established.

8. In paragraph 7, The above PUCCH configuration information is: Including two or more of the above spatial relationship information, A method for distinguishing and including first spatial relationship information for the first type symbol and second spatial relationship information for the second type symbol.

9. In paragraph 7, The above PUCCH configuration information is: A method comprising first PUCCH configuration information including first spatial relationship information for the first type symbol and second PUCCH configuration information including second spatial relationship information for the second type symbol.

10. In paragraph 7, The above activation information is, A method for dividing information into information for activating spatial relationship information of the first type symbol and information for activating spatial relationship information of the second type symbol.

11. In paragraph 7, The above uplink control channel transmission beam is, A method in which a reference signal configuration included in the above spatial relationship information is applied to both the first type symbol and the second type symbol, based on a reference signal transmitted or received in the same type as the type of symbol through which the uplink control channel transmission is performed.

12. In a terminal transmitting an uplink control channel, A receiving unit that receives, from a base station, activation information indicating activation of PUCCH (Physical Uplink Control Channel) configuration information and spatial relationship information for determining an uplink control channel transmission beam based on the PUCCH configuration information; A control unit that determines the uplink control channel transmission beam based on the spatial relationship information indicated by the activation information; and Including a transmitter that transmits the uplink control channel to the base station using the uplink control channel transmission beam, A terminal in which the above uplink control channel transmission beam is separately determined for each of a first type symbol for which subband-based full duplex communication is established and a second type symbol for which the subband-based full duplex communication is not established.

13. In paragraph 12, The above PUCCH configuration information is: Including two or more of the above spatial relationship information, A terminal that includes first spatial relationship information for the first type symbol and second spatial relationship information for the second type symbol.

14. In paragraph 12, The above PUCCH configuration information is: A terminal including first PUCCH configuration information including first spatial relationship information for the first type symbol and second PUCCH configuration information including second spatial relationship information for the second type symbol.

15. In paragraph 12, The above activation information is, A terminal divided into information for activating spatial relationship information of the first type symbol and information for activating spatial relationship information of the second type symbol.

16. In paragraph 12, The above uplink control channel transmission beam is, A terminal determined based on the spatial relationship information set or activated for the symbol through which the above uplink control channel is transmitted.

17. In paragraph 12, The above uplink control channel transmission beam is, A terminal determined based on a reference signal transmitted or received in a type identical to the type of symbol through which the uplink control channel transmission is performed, when the reference signal configuration included in the above spatial relationship information is applied to both the first type symbol and the second type symbol.

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