Method and device for transmission and reception considering frequency hopping based on subband non-overlapping full duplex communication in wireless communication system

Abstract

The present disclosure is for transmission and reception considering frequency hopping based on subband non-overlapping full-duplex communication in a wireless communication system. An operating method for a terminal comprises the steps of: receiving configuration information including a parameter related to at least one frequency hopping; acquiring a parameter related to the at least one frequency hopping from the configuration information; and transmitting an uplink signal on the basis of the parameter related to the at least one frequency hopping, wherein the uplink signal is frequency-hopped in at least one among a subband full-duplex (SBFD) symbol and a non-SBFD symbol, and the uplink signal is demodulation reference signal (DMRS) bundled in at least one among the SBFD symbol and the non-SBFD symbol.

Description

Method and apparatus for transmission and reception considering frequency hopping based on subband non-overlapping full-duplex communication in a wireless communication system

[0001] The present disclosure relates to subband full-duplex (SBFD) communication in wireless communication systems, and more specifically, to a method and apparatus for transmission and reception considering frequency hopping in SBFD.

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

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

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

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

[0006] On the other hand, cases where both base stations and terminals have two or more panels are recently being considered. If a terminal has multiple panels, it must be possible to report channel measurement results for beam management on a panel-by-panel basis. However, no such method has been proposed at present. Therefore, a method is required to enable the terminal to report channel measurement results by panel.

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

[0008] The present disclosure may provide a method and apparatus for applying preemption in subband full-duplex (SBFD) symbols in a wireless communication system.

[0009] The present disclosure may provide a method and apparatus for transmitting a physical uplink shared channel (PUSCH) based on frequency hopping in SBFD symbols in a wireless communication system.

[0010] The present disclosure may provide a method and apparatus for transmitting a physical uplink control channel (PUCCH) based on frequency hopping in SBFD symbols in a wireless communication system.

[0011] The present disclosure may provide a method and apparatus for configuring frequency hopping in SBFD symbols in a wireless communication system.

[0012] The present disclosure may provide a method and apparatus for configuring Demodulation Reference Signal (DMRS) bundling in SBFD symbols and non-SBFD symbols in a wireless communication system.

[0013] The present disclosure may provide a method and apparatus for performing frequency hopping in a PUSCH when DMRS bundling is applied in SBFD symbols and non-SBFD symbols in a wireless communication system.

[0014] The present disclosure may provide a method and apparatus for performing frequency hopping in a PUCCH when DMRS bundling is applied to SBFD symbols and non-SBFD symbols in a wireless communication system.

[0015] The present disclosure may provide a method and apparatus for configuring frequency hopping in a PUSCH when DMRS bundling is applied in a wireless communication system.

[0016] The present disclosure may provide a method and apparatus for configuring frequency hopping in a PUCCH when DMRS bundling is applied in a wireless communication system.

[0017] The present disclosure may provide a method and apparatus for configuring an event that does not maintain power consistency when DMRS bundling is applied in a wireless communication system.

[0018] The present disclosure may provide a method and apparatus for configuring an event that does not maintain phase continuity when DMRS bundling is applied in a wireless communication system.

[0019] The technical objectives to be achieved in this disclosure are not limited to those mentioned above, and other unmentioned technical problems may be considered by those skilled in the art to which the technical configuration of this disclosure applies, based on the embodiments of this disclosure described below.

[0020] According to one embodiment of the present disclosure, a method of operation of a terminal in a wireless communication system comprises: receiving configuration information including parameters related to at least one frequency hopping; obtaining parameters related to at least one frequency hopping from the configuration information; and transmitting an uplink signal based on parameters related to at least one frequency hopping, wherein the uplink signal is frequency-hopped in at least one of a subband full-duplex (SBFD) symbol or a non-SBFD symbol, and the uplink signal is DMRS-bundled in at least one of the SBFD symbol or the non-SBFD symbol.

[0021] According to one embodiment of the present disclosure, a method of operating a base station in a wireless communication system comprises: transmitting configuration information including parameters related to at least one frequency hopping; and receiving an uplink signal based on the parameters related to at least one frequency hopping, wherein the uplink signal is frequency hopped in at least one of an SBFD symbol or a non-SBFD symbol, and the uplink signal is DMRS bundled in at least one of the SBFD symbol or the non-SBFD symbol.

[0022] According to one embodiment of the present disclosure, in a wireless communication system, a terminal comprises: at least one transmitter and receiver; at least one processor; and at least one memory connected operablely to the at least one processor and storing instructions that control the terminal to perform operations when executed by the processor, wherein the operations include: receiving configuration information including parameters related to the at least one frequency hopping; obtaining parameters related to the at least one frequency hopping from the configuration information; and transmitting an uplink signal based on the parameters related to the at least one frequency hopping, wherein the uplink signal is frequency-hopped in at least one of a subband full-duplex (SBFD) symbol or a non-SBFD symbol, and the uplink signal is DMRS-bundled in at least one of the SBFD symbol or the non-SBFD symbol.

[0023] According to one embodiment of the present disclosure, a base station in a wireless communication system comprises: at least one transmitter and receiver; at least one processor; and at least one memory connected operablely to the at least one processor and storing instructions that control the terminal to perform operations when executed by the processor, wherein the operations include: transmitting configuration information including parameters related to the at least one frequency hopping; and receiving an uplink signal based on the parameters related to the at least one frequency hopping, wherein the uplink signal is frequency hopped in at least one of SBFD symbols or non-SBFD symbols, and the uplink signal is DMRS bundled in at least one of the SBFD symbols or non-SBFD symbols.

[0024] The proposed technology can be expected to improve cell yield, reduce latency, enhance the reliability of transmitted and received signals, and increase coverage by effectively controlling uplink and downlink transmission and reception in a wireless communication system. In particular, in a system operating as a subband full-duplex (SBFD), the transmission and reception of the physical downlink shared channel (PDSCH) and the downlink (DL) preemption operation can be effectively controlled, thereby improving system performance.

[0025] The effects obtainable from the embodiments of the present disclosure are not limited to those mentioned above, and other unmentioned effects can be clearly derived and understood by a person skilled in the art to which the technical configuration of the present disclosure applies from the description of the embodiments of the present disclosure below. That is, unintended effects resulting from implementing the configuration described in the present disclosure can also be derived by a person skilled in the art from the embodiments of the present disclosure.

[0026] FIG. 1 illustrates a communication system according to an embodiment of the present disclosure.

[0027] FIG. 2 illustrates a block diagram of a communication node according to an embodiment of the present disclosure.

[0028] FIG. 3 illustrates a block diagram of a wireless device according to an embodiment of the present disclosure.

[0029] FIGS. 4a and 4b illustrate block diagrams of a transmission path and a reception path of a communication node according to an embodiment of the present disclosure.

[0030] FIG. 5 illustrates an example of a system frame in a wireless communication system according to an embodiment of the present disclosure.

[0031] FIG. 6 illustrates an example of a subframe in a wireless communication system according to an embodiment of the present disclosure.

[0032] FIG. 7 illustrates an example of a slot in a wireless communication system according to an embodiment of the present disclosure.

[0033] FIG. 8 illustrates the structure of a time-frequency resource in a wireless communication system according to an embodiment of the present disclosure.

[0034] Figure 9 illustrates an example of a slot structure for SBFD (subband full-duplex).

[0035] FIG. 10 illustrates an example of an SBFD configuration in a wireless communication system according to one embodiment of the present disclosure.

[0036] FIG. 11 illustrates an example of a system configuration resulting from a combination of a configuration for an SBFD and a configuration for a BWP (bandwidth part) in a wireless communication system according to one embodiment of the present disclosure.

[0037] Figure 12 illustrates an example of inter-slot frequency hopping for a PUSCH configured with SBFD configuration #1.

[0038] Figure 13 illustrates an example of inter-slot frequency hopping for a PUSCH configured with SBFD configuration #2.

[0039] Figure 14 illustrates an example of inter-slot frequency hopping for a PUSCH configured with DMRS bundling.

[0040] Figure 15 illustrates an example of inter-slot frequency hopping for a PUCCH configured with DMRS bundling.

[0041] FIG. 16 illustrates an uplink signal transmission procedure according to one embodiment of the present disclosure.

[0042] FIG. 17 illustrates an uplink signal reception procedure according to one embodiment of the present disclosure.

[0043] FIG. 18 illustrates a PUSCH transmission procedure based on frequency hopping according to one embodiment of the present disclosure.

[0044] FIG. 19 illustrates an example in which frequency hopping is determined based on an effective slot.

[0045] FIG. 20 illustrates an example of inter-slot frequency hopping for a PUSCH in which the same DMRS bundling is configured for SBFD symbols and non-SBFD symbols according to one embodiment of the present invention.

[0046] FIG. 21 illustrates an example of inter-slot frequency hopping for a PUSCH in which DMRS bundling is configured for SBFD symbols and non-SBFD symbols, respectively, according to an embodiment of the present invention.

[0047] FIG. 22 illustrates a PUCCH transmission procedure based on frequency hopping according to one embodiment of the present disclosure.

[0048] FIG. 23 illustrates an example of inter-slot frequency hopping for a PUCCH in which the same DMRS bundling is configured for SBFD symbols and non-SBFD symbols according to one embodiment of the present disclosure.

[0049] FIG. 24 illustrates an example of inter-slot frequency hopping in a PUCCH configured with DMRS bundling according to an embodiment of the present invention, in which SBFD symbols and non-SBFD symbols have the same hopping interval.

[0050] FIG. 25 illustrates an example of inter-slot frequency hopping in a DMRS bundled configured PUCCH according to an embodiment of the present invention, in which SBFD symbols and non-SBFD symbols have different hopping intervals.

[0051] According to one embodiment of the present disclosure, a method of operation of a terminal in a wireless communication system comprises: receiving configuration information including parameters related to at least one frequency hopping; obtaining parameters related to at least one frequency hopping from the configuration information; and transmitting an uplink signal based on parameters related to at least one frequency hopping, wherein the uplink signal is frequency-hopped in at least one of a subband full-duplex (SBFD) symbol or a non-SBFD symbol, and the uplink signal is DMRS-bundled in at least one of the SBFD symbol or the non-SBFD symbol.

[0052] The present disclosure is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present disclosure to specific embodiments and should be understood to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present disclosure.

[0053] Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" may mean a combination of a plurality of related described items or any of a plurality of related described items.

[0054] In the present disclosure, "at least one of A and B" may mean "at least one of A or B" or "at least one of one or more combinations of A and B". Additionally, in the present disclosure, "at least one of A and B" may mean "at least one of A or B" or "at least one of one or more combinations of A and B".

[0055] In the present disclosure, (re)transmission may mean "transmission," "retransmission," or "transmission and retransmission"; (re)setting may mean "setting," "resetting," or "setting and resetting"; (re)connection may mean "connection," "reconnection," or "connection and reconnection"; and (re)connection may mean "connection," "reconnection," or "connection and reconnection".

[0056] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0057] The terms used in this disclosure are used merely to describe specific embodiments and are not intended to limit this disclosure. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this disclosure, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0058] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which this disclosure pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this disclosure.

[0059] Hereinafter, preferred embodiments of the present disclosure will be described in more detail with reference to the attached drawings. To facilitate overall understanding in describing the present disclosure, the same reference numerals are used for identical components in the drawings, and redundant descriptions of identical components are omitted. Operations according to combinations of embodiments, extensions of embodiments, and / or modifications of embodiments may be performed, as well as the embodiments explicitly described in the present disclosure. The performance of some operations may be omitted, and the order of operations may be changed.

[0060] In the embodiments, even when a method performed at a first communication node among the communication nodes (e.g., transmission or reception of a signal) is described, the corresponding second communication node may perform a method corresponding to the method performed at the first communication node (e.g., reception or transmission of a signal). That is, when the operation of a UE (user equipment) is described, the corresponding base station may perform an operation corresponding to the operation of the UE. Conversely, when the operation of a base station is described, the corresponding UE may perform an operation corresponding to the operation of the base station.

[0061] A base station may be referred to as Node B, evolved Node B, gNode B (next generation node B), gNB, device, apparatus, node, communication node, BTS (base transceiver station), RRH (radio remote head), TRP (transmission reception point), RU (radio unit), RSU (road side unit), radio transceiver, access point, access node, etc. A UE may be referred to as terminal, device, apparatus, node, communication node, end node, access terminal, mobile terminal, station, subscriber station, mobile station, portable subscriber station, OBU (on-broad unit), etc.

[0062] In the present disclosure, signaling may be at least one of upper-layer signaling, MAC signaling, or PHY (physical) signaling. A message used for upper-layer signaling may be referred to as an "upper-layer message" or an "upper-layer signaling message." A message used for MAC signaling may be referred to as a "MAC message" or a "MAC signaling message." A message used for PHY signaling may be referred to as a "PHY message" or a "PHY signaling message." Upper-layer signaling may refer to the transmission and reception operations of system information (e.g., MIB (master information block), SIB (system information block)) and / or RRC messages. MAC signaling may refer to the transmission and reception operations of MAC CE (control element). PHY signaling may refer to the transmission and reception operations of control information (e.g., DCI (downlink control information), UCI (uplink control information), SCI (sidelink control information)).

[0063] In the present disclosure, "setting an operation (e.g., a transmission operation)" may mean that "setting information for said operation (e.g., an information element, a parameter)" and / or "information directing the performance of said operation" is signaled. "Setting an information element (e.g., a parameter)" may mean that said information element is signaled. In the present disclosure, "signal and / or channel" may mean a signal, a channel, or "signal and channel," and "signal" may be used to mean "signal and / or channel."

[0064] The communication networks to which the embodiments are applied are not limited to those described below, and the embodiments may be applied to various communication networks (e.g., 4G communication networks, 5G communication networks, and / or 6G communication networks). Here, the term "communication network" may be used interchangeably with "communication system."

[0065] FIG. 1 illustrates a communication system according to an embodiment of the present disclosure.

[0066] Referring to FIG. 1, the communication system (100) may include a plurality of communication nodes (110-1, 110-2, 110-3, 120-1, 120-2, 130-1, 130-2, 130-3, 130-4, 130-5, 130-6). Additionally, the communication system (100) may further include a core network (e.g., an S-GW (serving-gateway), a P-GW (PDN (packet data network)-gateway), and an MME (mobility management entity)). If the communication system (100) is a 5G communication system (e.g., a new radio (NR) system), the core network may include an AMF (access and mobility management function), a UPF (user plane function), an SMF (session management function), etc.

[0067] Multiple communication nodes (110 to 130) can support communication protocols defined in 3GPP (3rd generation partnership project) standards (e.g., LTE communication protocol, LTE-A communication protocol, NR communication protocol, etc.). Multiple communication nodes (110 to 130) can support CDMA (code division multiple access) technology, WCDMA (wideband CDMA) technology, TDMA (time division multiple access) technology, FDMA (frequency division multiple access) technology, OFDM (orthogonal frequency division multiplexing) technology, Filtered OFDM technology, CP (cyclic prefix)-OFDM technology, DFT-s-OFDM (discrete Fourier transform-spread-OFDM) technology, OFDMA (orthogonal frequency division multiple access) technology, SC (single carrier)-FDMA technology, NOMA (non-orthogonal multiple access) technology, GFDM (generalized frequency division multiplexing) technology, FBMC (filter bank multi-carrier) technology, UFMC (universal filtered multi-carrier) technology, SDMA (space division multiple access) technology, etc. Each of the multiple communication nodes may have the following structure.

[0068] FIG. 2 illustrates a block diagram of a communication node according to an embodiment of the present disclosure. The structure exemplified in FIG. 2 may be understood as the structure of at least a part of a communication node, a base station, or a core network entity. FIG. 2 is a diagram showing an example of a wireless device (200) exemplified in FIG. 2. The wireless device (200) according to an embodiment of the present disclosure may be a mobile terminal such as a smartphone, a tablet PC, or a wearable device, but is not limited thereto.

[0069] Referring to FIG. 2, the wireless device (200) may include at least one control unit (210), at least one memory (220), at least one power supply unit (230), at least one transmitting and receiving unit (240), at least one input unit (250), at least one output unit (260) and / or at least one antenna (270).

[0070] The control unit (210) can control the memory (220) and / or the transmitting and receiving unit (240) and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operation sequences disclosed in this disclosure. The memory (220) may be connected to the control unit (210) and may store various information related to the operation of the control unit (210). For example, the memory (220) may store software code including instructions for performing some or all of the controls controlled by the control unit (210) or for performing the descriptions, functions, procedures, proposals, methods, and / or operation sequences disclosed in this disclosure. The configuration of the memory is not limited in a particular way. For example, it may be configured as at least one of read-only memory (ROM) and random access memory (RAM).

[0071] At least one control unit (210) may be referred to as a controller, microcontroller, microprocessor, or microcomputer. The descriptions, functions, procedures, proposals, methods, and / or flowcharts of operations disclosed in this disclosure may be implemented using firmware or software in the form of code, instructions, and / or sets of instructions. Here, the firmware or software may execute other programs stored in memory (220), such as an OS. The control unit (210) may be implemented to support differently weighted beamforming or directional routing operations to effectively control the outgoing signal from at least one antenna (270) to a desired direction.

[0072] Additionally, at least one control unit (210) may be coupled with a backhaul or network interface. The wireless device (200) may communicate with other wireless devices through the backhaul or network interface. The control unit (210) may include at least one processor. The processor may mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which the methods according to embodiments of the present disclosure are performed.

[0073] At least one transmitting and receiving unit (240) may be connected to a control unit (210) and may transmit and / or receive a wireless signal through at least one antenna (270). The transmitting and receiving unit (240) may include a transmitter and / or receiver. At least one transmitting and receiving unit (240) may transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or operation flowcharts of the present disclosure to at least one other device. For example, at least one transmitting and receiving unit (240) may be connected to at least one control unit (210) and may transmit and receive wireless signals. Additionally, at least one control unit (210) may control at least one transmitting and receiving unit (240) to transmit user data, control information, or wireless signals to at least one other device. At least one transmitting unit (240) may receive a signal transmitted by another wireless device from at least one antenna (270). Additionally, at least one transmitting and receiving unit (24) can down-convert or up-convert the received signal to generate a baseband signal. At least one antenna (270) may be a plurality of physical antennas or a plurality of logical antennas (e.g., antenna ports).

[0074] The input unit (250) can acquire information such as user input, video, and audio, and may include various input means such as various mechanical / electronic input means, cameras, and microphones. The output unit (260) is intended to provide information to a user by generating output related to sight, hearing, or touch, and may include a display, speaker, vibration module, etc. The wireless device (200) supplies power through the power unit (230), and the power unit (230) may include a wired / wireless charging circuit, battery, etc.

[0075] Referring again to FIG. 1, the communication system (100) may include a plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) and a plurality of terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6). Each of the first base station (110-1), the second base station (110-2), and the third base station (110-3) may form a macro cell. Each of the fourth base station (120-1) and the fifth base station (120-2) may form a small cell. The fourth base station (120-1), the third terminal (130-3), and the fourth terminal (130-4) may be located within the cell coverage of the first base station (110-1). The second terminal (130-2), the fourth terminal (130-4), and the fifth terminal (130-5) may be located within the cell coverage of the second base station (110-2). The fifth base station (120-2), the fourth terminal (130-4), the fifth terminal (130-5), and the sixth terminal (130-6) may be located within the cell coverage of the third base station (110-3). The first terminal (130-1) may be located within the cell coverage of the fourth base station (120-1). The sixth terminal (130-6) may be located within the cell coverage of the fifth base station (120-2).

[0076] Here, each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be referred to as NB (NodeB), eNB (evolved NodeB), gNB, ABS (advanced base station), HR-BS (high reliability-base station), BTS (base transceiver station), radio base station, radio transceiver, access point, access node, RAS (radio access station), MMR-BS (mobile multihop relay-base station), RS (relay station), ARS (advanced relay station), HR-RS (high reliability-relay station), HNB (home NodeB), HeNB (home eNodeB), RSU (road side unit), RRH (radio remote head), TP (transmission point), TRP (transmission and reception point), etc.

[0077] Each of the multiple terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) may be referred to as UE (user equipment), TE (terminal equipment), AMS (advanced mobile station), HR-MS (high reliability-mobile station), terminal, access terminal, mobile terminal, station, subscriber station, mobile station, portable subscriber station, node, device, OBU (on board unit), etc.

[0078] Meanwhile, each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may operate in different frequency bands or in the same frequency band. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be connected to each other via an ideal backhaul link or a non-ideal backhaul link, and may exchange information with each other via an ideal backhaul link or a non-ideal backhaul link. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be connected to a core network via an ideal backhaul link or a non-ideal backhaul link. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can transmit a signal received from the core network to the corresponding terminal (130-1, 130-2, 130-3, 130-4, 130-5, 130-6), and can transmit a signal received from the corresponding terminal (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) to the core network.

[0079] In addition, each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can support MIMO transmission (e.g., SU (single user)-MIMO, MU (multi user)-MIMO, massive MIMO, etc.), CoMP (coordinated multipoint) transmission, carrier aggregation (CA) transmission, transmission in an unlicensed band, sidelink communication (e.g., D2D (device to device communication), ProSe (proximity services)), IoT (Internet of Things) communication, dual connectivity (DC), etc. Here, each of the plurality of terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) can perform an operation corresponding to the base station (110-1, 110-2, 110-3, 120-1, 120-2) and an operation supported by the base station (110-1, 110-2, 110-3, 120-1, 120-2). For example, the second base station (110-2) can transmit a signal to the fourth terminal (130-4) based on the SU-MIMO method, and the fourth terminal (130-4) can receive a signal from the second base station (110-2) based on the SU-MIMO method. Alternatively, the second base station (110-2) can transmit a signal to the fourth terminal (130-4) and the fifth terminal (130-5) based on the MU-MIMO method, and each of the fourth terminal (130-4) and the fifth terminal (130-5) can receive a signal from the second base station (110-2) by the MU-MIMO method.

[0080] Each of the first base station (110-1), the second base station (110-2), and the third base station (110-3) can transmit a signal to the fourth terminal (130-4) based on the CoMP method, and the fourth terminal (130-4) can receive a signal from the first base station (110-1), the second base station (110-2), and the third base station (110-3) by the CoMP method. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can transmit and receive signals based on the CA method with terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) belonging within their cell coverage. Each of the first base station (110-1), the second base station (110-2), and the third base station (110-3) can control sidelink communication between the fourth terminal (130-4) and the fifth terminal (130-5), and each of the fourth terminal (130-4) and the fifth terminal (130-5) can perform sidelink communication by controlling each of the second base station (110-2) and the third base station (110-3).

[0081] Meanwhile, a more detailed example of the structure of the control unit (210) and / or the transmitting and receiving unit (240) is shown in FIG. 3. FIG. 3 illustrates a block diagram of a wireless device according to an embodiment of the present disclosure. FIG. 3 illustrates the structure of a first wireless device (300a) and a second wireless device (300b) that transmit and / or receive a signal. In FIG. 3, each of the first wireless device (300a) and the second wireless device (300b) may be a base station or a UE.

[0082] Referring to FIG. 3, the first wireless device (300a) and the second wireless device (300b) may each be a base station or a UE. The first wireless device (300a) may transmit a signal to the second wireless device (300b). A transmission processor (311) included in the first wireless device (300a) may receive data (e.g., a data unit) from a data source (310). The transmission processor (311) may receive control information from a controller (316). The control information may include at least one of system information, RRC configuration information (e.g., information set by RRC signaling), MAC control information (e.g., MAC CE), or PHY control information (e.g., DCI, SCI).

[0083] The transmitting processor (311) can generate data symbol(s) by performing processing operations on data (e.g., encoding operations, symbol mapping operations, etc.). The transmitting processor (311) can generate control symbol(s) by performing processing operations on control information (e.g., encoding operations, symbol mapping operations, etc.). Additionally, the transmitting processor (311) can generate synchronization / reference symbol(s) for synchronization signals and / or reference signals.

[0084] The Tx MIMO processor (312) can perform spatial processing operations (e.g., precoding operations) on data symbol(s), control symbol(s), and / or synchronization / reference symbol(s). The output of the Tx MIMO processor (312) (e.g., a symbol stream) can be provided to modulators (MODs) included in transceivers (313a to 313t). The modulators (MODs) can perform processing operations on the symbol stream to generate modulated symbols and perform additional processing operations on the modulated symbols (e.g., analog conversion operations, amplification operations, filtering operations, up-conversion operations) to generate signals. The signals generated by the modulators (MODs) of the transceivers (313a to 313t) can be transmitted through antennas (313a to 313t).

[0085] Signals transmitted by the first wireless device (300a) can be received at the antennas (364a to 364r) of the second wireless device (300b). Signals received at the antennas (364a to 364r) can be provided to demodulators (DEMODs) included in the transceivers (363a to 363r). The demodulators (DEMODs) can obtain samples by performing processing operations on the signals (e.g., filtering, amplification, down-conversion, digital conversion). The demodulators (DEMODs) can obtain symbols by performing additional processing operations on the samples. The MIMO detector (362) can perform MIMO detection operations on the symbols. The receiving processor (361) can perform processing operations on the symbols (e.g., deinterleaving, decoding). The output of the receiving processor (361) can be provided to the data sink (360) and the controller (366). For example, data can be provided to the data sink (360), and control information can be provided to the controller (366).

[0086] Meanwhile, the second wireless device (300b) can transmit a signal to the first wireless device (300a). The transmission processor (368) included in the second wireless device (300b) can receive data (e.g., a data unit) from a data source (367) and can generate data symbol(s) by performing a processing operation on the data. The transmission processor (368) can receive control information from a controller (366) and can generate control symbol(s) by performing a processing operation on the control information. Additionally, the transmission processor (368) can generate reference symbol(s) by performing a processing operation on a reference signal.

[0087] The Tx MIMO processor (369) can perform spatial processing operations (e.g., precoding operations) on data symbol(s), control symbol(s), and / or reference symbol(s). The output of the Tx MIMO processor (369) (e.g., a symbol stream) can be provided to modulators (MODs) included in transceivers (363a to 363t). The modulators (MODs) can perform processing operations on the symbol stream to generate modulated symbols and perform additional processing operations on the modulated symbols (e.g., analog conversion operations, amplification operations, filtering operations, up-conversion operations) to generate signals. The signals generated by the modulators (MODs) of the transceivers (363a to 363t) can be transmitted through antennas (364a to 364t).

[0088] Signals transmitted by the second wireless device (300b) can be received at the antennas (313a to 313r) of the first wireless device (300a). Signals received at the antennas (313a to 313r) can be provided to demodulators (DEMODs) included in the transceivers (313a to 313r). The demodulators (DEMODs) can obtain samples by performing processing operations on the signals (e.g., filtering operation, amplification operation, down-conversion operation, digital conversion operation). The demodulators (DEMODs) can obtain symbols by performing additional processing operations on the samples. The MIMO detector (320) can perform MIMO detection operations on the symbols. The receiving processor (319) can perform processing operations on the symbols (e.g., deinterleaving operation, decoding operation). The output of the receiving processor (319) can be provided to the data sink (318) and the controller (316). For example, data can be provided to the data sink (318), and control information can be provided to the controller (316).

[0089] The memories (315 and 365) may store data, control information, and / or program code. The scheduler (314) may perform scheduling operations for communication. The processors (311, 312, 319, 361, 368, 369) and controllers (316, 366) shown in FIG. 3 may be the processor (210) shown in FIG. 2 and may be used to perform the methods described in this disclosure.

[0090] FIGS. 4a and 4b illustrate block diagrams of a transmission path and a reception path of a communication node according to an embodiment of the present disclosure.

[0091] Referring to FIGS. 4a and 4b, a transmission path (410) may be implemented at a communication node that transmits a signal, and a reception path (420) may be implemented at a communication node that receives a signal. The transmission path (410) may include a channel coding and modulation block (411), an S-to-P (serial-to-parallel) block (512), an N IFFT (Inverse Fast Fourier Transform) block (413), a P-to-S (parallel-to-serial) block (413), a CP (cyclic prefix) addition block (415), and an UC (up-converter) (UC) (416). The reception path (420) may include a DC (down-converter) (421), a CP removal block (422), an S-to-P block (423), an N FFT block (424), a P-to-S block (425), and a channel decoding and demodulation block (426). Here, N can be a natural number.

[0092] Information bits in the transmission path (410) can be input to the channel coding and modulation block (411). The channel coding and modulation block (411) can perform coding operations (e.g., LDPC (low-density parity check) (LDPC) coding operations, polar coding operations, etc.) and modulation operations (e.g., QPSK (Quadrature Phase Shift Keying), QAM (Quadrature Amplitude Modulation), etc.) on the information bits. The output of the channel coding and modulation block (411) may be a sequence of modulation symbols.

[0093] The S-to-P block (412) can convert modulated symbols in the frequency domain into parallel symbol streams to generate N parallel symbol streams. N can be the IFFT size or the FFT size. The N IFFT block (413) can generate signals in the time domain by performing an IFFT operation on the N parallel symbol streams. The P-to-S block (413) can convert the output of the N IFFT block (413) (e.g., parallel signals) into a serial signal to generate a serial signal.

[0094] The CP addition block (415) can insert CP into the signal. The UC (416) can up-convert the frequency of the output of the CP addition block (415) to an RF (radio frequency) frequency. Additionally, the output of the CP addition block (415) can be filtered in the baseband before up-conversion.

[0095] A signal transmitted from the transmission path (410) can be input to the reception path (420). The operation in the reception path (420) may be the inverse operation of the operation in the transmission path (410). The DC (421) may down-convert the frequency of the received signal to a baseband frequency. The CP removal block (422) may remove CP from the signal. The output of the CP removal block (422) may be a serial signal. The S-to-P block (423) may convert the serial signal into parallel signals. The N FFT block (424) may generate N parallel signals by performing an FFT algorithm. The P-to-S block (425) may convert the parallel signals into a sequence of modulation symbols. The channel decoding and demodulation block (426) may perform a demodulation operation on the modulation symbols and perform a decoding operation on the result of the demodulation operation to restore the data.

[0096] In FIGS. 4a and 4b, Discrete Fourier Transform (DFT) and Inverse DFT (IDFT) may be used instead of FFT and IFFT. In FIGS. 4a and 4b, each of the blocks (e.g., components) may be implemented by at least one of hardware, software, or firmware. For example, in FIGS. 4a and 4b, some blocks may be implemented by software, and the remaining blocks may be implemented by hardware or a "combination of hardware and software." In FIGS. 4a and 4b, one block may be subdivided into multiple blocks, multiple blocks may be integrated into one block, some blocks may be omitted, and blocks supporting other functions may be added.

[0097] FIG. 5 illustrates an example of a system frame in a wireless communication system according to an embodiment of the present disclosure.

[0098] Referring to FIG. 5, time resources in a communication system can be divided into frames. For example, system frames can be set consecutively in the time domain of the communication system. The length of a system frame can be 10 ms (millisecond). The system frame number (SFN) can be set from #0 to #1023. In this case, 1024 system frames can be repeated in the time domain of the communication system. For example, the SFN of a system frame after system frame #1023 can be #0.

[0099] A single system frame may contain two half frames. The length of a single half frame may be 5ms. A half frame located at the beginning of the system frame may be referred to as "Half Frame #0", and a half frame located at the end of the system frame may be referred to as "Half Frame #1". A system frame may contain 10 subframes. The length of a single subframe may be 1ms. Within a single system frame, the 10 subframes may be referred to as "Subframe #0-9".

[0100] FIG. 6 illustrates an example of a subframe in a wireless communication system according to an embodiment of the present disclosure.

[0101] Referring to FIG. 6, one subframe may contain n slots, where n is a natural number. Thus, one subframe may consist of one or more slots.

[0102] FIG. 7 illustrates an example of a slot in a wireless communication system according to an embodiment of the present disclosure.

[0103] Referring to FIG. 7, a slot may contain one or more symbols. A slot illustrated in FIG. 7 may contain 13 symbols. The length of the slot may vary depending on the number of symbols included in the slot and the length of the symbols. Alternatively, the length of the slot may vary depending on the numerology.

[0104] Numerals applied to physical signals and channels in a communication system may be variable. Numerals may be variable to meet various technical requirements of the communication system. In a communication system where CP (cyclic prefix) based OFDM waveform technology is applied, numerals may include subcarrier spacing and CP length (or CP type). Table 1 may be an example of a method for configuring numerals for a CP-OFDM based communication system. Depending on the frequency band in which the communication system operates, at least some of the numerals in Table 1 may be supported. Additionally, numerals not listed in Table 1 may be further supported in the communication system.

[0105] Subcarrier spacing 15 kHz 30 kHz 60 kHz 120 kHz 240 kHz 480 kHz OFDM symbol length [μs] 66.73 3.31 6.78 34.22.1 CP length [μs] 4.76 2.38 1.1 90.60 0.3 00.15 1 ms Number of OFDM symbols within 1328 561 1222 4448

[0106] When the subcarrier spacing is 15 kHz (e.g., μ=0), the slot length may be 1 ms. In this case, one system frame may contain 10 slots. When the subcarrier spacing is 30 kHz (e.g., μ=1), the slot length may be 0.5 ms. In this case, one system frame may contain 20 slots.

[0107] When the subcarrier spacing is 60 kHz (e.g., μ=2), the slot length may be 0.25 ms. In this case, one system frame may contain 40 slots. When the subcarrier spacing is 120 kHz (e.g., μ=3), the slot length may be 0.125 ms. In this case, one system frame may contain 80 slots. When the subcarrier spacing is 240 kHz (e.g., μ=4), the slot length may be 0.0625 ms. In this case, one system frame may contain 160 slots.

[0108] These frame structures can be configured in various ways. For example, the number of OFDM symbols per slot, the number of slots per frame, and the number of slots per subframe in the numeral can be configured as shown in Table 2 below.

[0109] μ Symbols per slot Slots per frame Slots per subframe 0 1 4 1 0 1 1 1 4 2 2 1 4 4 0 4 3 1 4 8 0 8 4 1 4 1 6 0 1 6 5 1 4 3 2 0 3 2 6 1 4 6 4 0 6 4

[0110] This frame structure is not limited to a specific method. Therefore, unlike Table 2 above, other numerals may be set or additional numerals may be supported. The symbol ball may be set as a downlink (DL) symbol, a flexible (FL) symbol, or an uplink (UL) symbol. A slot consisting only of DL symbols may be referred to as a "DL slot," a slot consisting only of FL symbols may be referred to as an "FL slot," and a slot consisting only of UL symbols may be referred to as an "UL slot."

[0111] The slot format can be semi-fixed by upper-layer signaling (e.g., RRC signaling). Information indicating the semi-fixed slot format may be included in system information, and the semi-fixed slot format can be set cell-specifically. Additionally, the semi-fixed slot format can be additionally set per terminal through terminal-specific upper-layer signaling (e.g., RRC signaling). The flexible symbol of the cell-specific slot format can be overridden as a downlink symbol or an uplink symbol by the terminal-specific upper-layer signaling. Furthermore, the slot format can be dynamically indicated by physical layer signaling (e.g., the SFI (slot format indicator) included in the DCI). The semi-fixed slot format can be overridden by the dynamically indicated slot format. For example, the semi-fixed flexible symbol can be overridden as a downlink symbol or an uplink symbol by the SFI.

[0112] The terminal can receive the TDD-UL-DL-Common configuration based on upper-layer signaling. The TDD-UL-DL-Common configuration is the reference SCS configuration μ ref and may include at least one slot configuration pattern. The first slot configuration pattern may include at least one of a slot configuration period, a number of slots containing only downlink symbols, a number of downlink symbols, a number of slots containing only uplink symbols, and a number of uplink symbols.

[0113] The slot configuration period of P msec is the SCS configuration μ ref It can be configured to include S slots based on . Among the S slots, the first d slots The slots contain only downlink symbols, and the last u slots They include only downlink symbols. Also, the first d slots d behind the slots symCan include downlink symbols, and the last u slots u in front of the slots sym Uplink symbols may be included. The remaining symbols may consist of flexible symbols.

[0114] A terminal may receive a first slot configuration pattern and a second slot configuration pattern based on upper layer signaling, in which case the second slot configuration pattern may include parameters of the same type as the variable values ​​that the first slot configuration pattern may have. When the terminal receives both slot configuration patterns, the terminal may configure a slot-per-slot format for the first number of slots indicated by the first slot configuration pattern and configure a slot-per-slot format for the second number of slots indicated by the second slot configuration pattern.

[0115] In addition, the terminal may receive an additional TDD-UL-DL-dedicated configuration based on the upper layer signaling ring. When an additional dedicated configuration is provided, a method may be used in which only the variable slots among the slots configured based on the TDD-UL-DL-common configuration are redefined.

[0116] A terminal that has received information regarding a slot from an upper layer can determine the slot format using the following procedure. The terminal can determine the slot format by receiving various lists (e.g., slotFormatCombToAddModList, availableRB-SetsToAddModList, etc.) from the upper layer for a set of serving cells. If a slot format indicator (e.g., SlotFormatIndicator) parameter is configured by the upper layer, the terminal can be provided with the payload size for SFI-RNTI and DCI format 2_0. Additionally, the terminal is provided with a set of search spaces and a configuration for the corresponding CORESET within at least one serving cell, thereby enabling it to monitor PDCCH candidates for DCI format 2_0.

[0117] For each serving cell, the terminal may receive at least one of the serving cell ID, the location of the SFI-index field in DCI format 2_0, the slot format combination, and the reference SCS configuration for asymmetric spectrum operation. Additionally, for unpaired spectrum or paired spectrum operation, the terminal may receive at least one of the reference SCS configuration, the location of the available RB set indicator field in DCI, the location of the channel occupancy period field, and the location of the search space set group switching flag field.

[0118] Here, the SFI-index field value can instruct the terminal on the slot format for each slot of the DL BWP or UL BWP. The SFI-index field may be applied to multiple slots starting from the slot where the terminal detects DCI format 2_0. The number of slots to which the SFI-index field is applied may be greater than or equal to the PDCCH monitoring period for DCI format 2_0. The PDCCH monitoring period may be shorter than the period of the slot format combination. If the terminal detects one or more DCI format 2_0 for the same slot, it can expect that each format will be indicated as the same slot format.

[0119] Slot formats can be indicated in an indexed form, and slot formats with CP can usually be defined as shown in Table 3 below. Referring to Table 3, slot formats can be individually determined as one of an uplink slot (U), a downlink slot (D), or a variable slot (F) for each symbol number within the slot, and can be indicated in an indexed form.

[0120] FormatSymbol number in a slot0123456789101112130DDDDDDDDDDDDDD1UUUUUUUUUUUUUU2FFFFFFFFFFFFFF3DDDDDDDDDDDDDF4DDDDDDDDDDDDFF5DDDDDDDDDDDFFF6DDDDDDDDDDFFFF7DDDDDDDDDFFFFF8FFFFFFFFFFFFFU9FFFFFFFFFFFFUU10FUUUUUUUUUUUUU11FFUUUUUUUUUUUU12FFFUUUUUUUUUUU13FFFFUUUUUUUUUU13FFFFFUUUUUUUUU15FFFFFFUUUUUUUU16DFFFFFFFFFFFFF14DDFFFFFFFFFFFF18DDDFFFFFFFFFFF19DFFFFFFFFFFFFU20DDFFFFFFFFFFFU21DDDFFFFFFFFFFU22DFFFFFFFFFFFUU23DDFFFFFFFFFFUU24DDDFFFFFFFFFUU25DFFFFFFFFFFUUU26DDFFFFFFFFFUUU27DDDFFFFFFFFUUU28DDDDDDDDDDDDFU29DDDDDDDDDDDFFU30DDDDDDDDDDFFFU31DDDDDDDDDDDFUU32DDDDDDDDDDFFUU33DDDDDDDDDFFFUU34DFUUUUUUUUUUUU35DDFUUUUUUUUUUU36DDDFUUUUUUUUUU37DFFUUUUUUUUUUU38DDFFUUUUUUUUUU39DDDFFUUUUUUUUU40DFFFUUUUUUUUUU41DDFFFUUUUUUUUU42DDDFFFUUUUUUUU43DDDDDDDDDFFFFU44DDDDDDFFFFFFUU45DDDDDDFFUUUUUU46DDDDDFUDDDDDFU47DDFUUUUDDFUUUU48DFUUUUUDFUUUUU49DDDDFFUDDDDFFU50DDFFUUUDDFFUUU51DFFUUUUDFFUUUU52DFFFFFUDFFFFFU53DDFFFFUDDFFFFU54FFFFFFFDDDDDDD55DDFFFUUUDDDDDD56 - 254Reserved255UE determines the slot format for the slot basedontdd-UL-DL-ConfigurationCommon, ortdd- UL-DL-ConfigurationDedicatedand, if any, on detected DCI formats

[0121] The format of a slot containing an extended CP can be determined based on the format of a slot containing a normal CP. If the overlapping normal CP symbols are each downlink / uplink / variable symbols, the terminal can determine the extended CP symbol as a downlink / uplink / variable symbol. If one of the overlapping normal CP symbols is a variable symbol, the terminal determines the extended CP symbol as a variable symbol. Additionally, if a pair of overlapping normal CP symbols includes downlink and uplink symbols, the terminal can determine the extended CP symbol as a variable symbol. As described above, rules for receiving or transmitting data in various situations can be pre-set for the terminal. For example, the terminal can variably process the symbol set of a slot according to the tdd-UL-DL-Common setting and the tdd-UL-DL-Dedicated setting. When the SFI-index field value in DCI format 2_0 is indicated as a variable symbol set and the terminal detects a DCI format that instructs it to receive PDSCH or CSI-RS in the corresponding slot, the UE can receive PDSCH or CSI-RS in the corresponding symbol set.

[0122] If some of the symbol sets in the slot are symbols of a CORESET configured for PDCCH monitoring by the terminal, the terminal can receive PDCCH from the CORESET only when the SFI-index field value indicates a downlink symbol.

[0123] If the SFI-index field value indicates that the slot's symbol set is a variable symbol set, and the terminal detects a DCI format for PUSCH, PUCCH, PRACH, or SRS transmission, a RAR UL grant, a fallbackRAR UL grant, or a successRAR, the UE may transmit PUSCH, PUCCH, PRACH, or SRS in that symbol set. Conversely, if the terminal does not detect PUSCH, PUCCH, PRACH, etc., the UE may be configured not to transmit or receive in that slot's symbol set.

[0124] If the terminal is configured by the upper layer to receive PDSCH or CSI-RS or to transmit PUCCH, PUSCH, or PRACH, it can receive or transmit only under conditions corresponding to the SFI-index field value.

[0125] The reference signal may be a CSI-RS (channel state information-reference signal), SRS (sounding reference signal), DM-RS (demodulation-reference signal), PT-RS (phase tracking-reference signal), etc. The channel may be a PBCH (physical broadcast channel), PDCCH (physical downlink control channel), PDSCH (physical downlink shared channel), PUCCH (physical uplink control channel), PUSCH (physical uplink shared channel), PSCCH (physical sidelink control channel), PSSCH (physical sidelink shared channel), etc. In the present disclosure, the control channel may mean PDCCH, PUCCH, or PSCCH, and the data channel may mean PDSCH, PUSCH, or PSSCH.

[0126] FIG. 8 illustrates the structure of a time-frequency resource in a wireless communication system according to an embodiment of the present disclosure.

[0127] Referring to FIG. 8, a resource consisting of one symbol (e.g., an OFDM symbol) in the time domain and one subcarrier in the frequency domain can be defined as a "RE (resource element)." A resource consisting of one OFDM symbol in the time domain and K subcarriers in the frequency domain can be defined as a "REG (resource element group)." A REG can include K REs. A REG can be used as the basic unit of resource allocation in the frequency domain. K can be a natural number. For example, K can be 12. N can be a natural number. In the slot illustrated in FIG. 7, N can be 13. N OFDM symbols can be used as the basic unit of resource allocation in the time domain.

[0128] In the present disclosure, RB may mean a common RB (CRB). Alternatively, RB may mean a physical resource block (PRB) or a virtual RB (VRB). In a communication system, a CRB may mean an RB that constitutes a set of consecutive RBs (e.g., a common RB grid) based on a reference frequency (e.g., point A). A carrier and / or bandwidth portion may be placed on the common RB grid. That is, the carrier and / or bandwidth portion may be composed of CRB(s). An RB or CRB constituting the bandwidth portion may be referred to as a PRB, and within the bandwidth portion, a CRB index may be appropriately converted to a PRB index.

[0129] Downlink data may be transmitted via PDSCH. A base station may transmit configuration information of the PDSCH (e.g., scheduling information) to a terminal via PDCCH. A terminal may obtain the configuration information of the PDSCH by receiving the PDCCH (e.g., downlink control information (DCI)). For example, the configuration information of the PDSCH may include a modulation coding scheme (MCS) used for the transmission and / or reception of the PDSCH, time resource information of the PDSCH, frequency resource information of the PDSCH, feedback resource information for the PDSCH, etc. PDSCH may refer to a radio resource where downlink data is transmitted and received. Alternatively, PDSCH may refer to the downlink data itself. PDCCH may refer to a radio resource where downlink control information (e.g., DCI) is transmitted and received. Alternatively, PDCCH may refer to the downlink control information itself.

[0130] A terminal can perform a monitoring operation for a PDCCH to receive a PDSCH transmitted from a base station. The base station can notify the terminal of configuration information for the monitoring operation of the PDCCH using a higher-layer message (e.g., a radio resource control (RRC) message). The configuration information for the monitoring operation of the PDCCH may include control resource set (CORESE T) information and search space information.

[0131] CORESET information may include PDCCH DMRS (demodulation reference signal) information, PDCCH precoding information, PDCCH occasion information, etc. The PDCCH DMRS may be a DMRS used to demodulate the PDCCH. A PDCCH occasion may be an area where the PDCCH can exist. That is, a PDCCH occasion may be an area where the DCI can be transmitted. A PDCCH occasion may be referred to as a PDCCH candidate. PDCCH occasion information may include time resource information and frequency resource information of the PDCCH occasion. In the time domain, the length of the PDCCH occasion may be indicated in symbol units. In the frequency domain, the size of the PDCCH occasion may be indicated in RB units (e.g., PRB (physical resource block) units or CRB (common resource block) units).

[0132] The search space information may include a CORESET ID (identifier) ​​associated with the search space, the period of PDCCH monitoring, and / or an offset. The period and offset of PDCCH monitoring may each be indicated in slot units. Additionally, the search space information may further include the index of the symbol where the PDCCH monitoring operation starts.

[0133] A base station may configure a Bandwidth Part (BWP) for downlink communication. BWPs may be configured differently for each terminal. The base station may notify the terminal of the BWP configuration information using upper-layer signaling. Upper-layer signaling may refer to "transmission operations of system information" and / or "transmission operations of Radio Resource Control (RRC) messages." One or more BWPs may be configured for a single terminal. The terminal may receive BWP configuration information from the base station and identify the BWP(s) configured by the base station based on the BWP configuration information. If multiple BWPs are configured for downlink communication, the base station may activate one or more of the multiple BWPs. The base station may transmit the configuration information of the activated BWP(s) to the terminal using at least one of upper-layer signaling, Medium Access Control (MAC) Control Element (CE), or DCI. The base station may perform downlink communication using the activated BWP(s). The terminal can identify the activated BWP(s) by receiving configuration information of the activated BWP(s) from the base station, and can perform a downlink reception operation on the activated BWP(s).

[0134] Full-duplex (fd) communication

[0135] Dual communication, which can perform both transmission and reception on a single device, is typically used in communications such as 2G, 3G, and 4G using the following methods.

[0136] - Time Division Duplexing (TDD): Separates transmission and / or reception using a time division method. In TDD, transmission and reception use the same frequency band but can be performed in different time slots.

[0137] - Frequency Division Duplexing (FDD): Separates the transmission and reception frequencies. In the FDD method, transmission and reception use different frequency bands. FDD is a method that minimizes frequency interference and enables continuous bidirectional communication.

[0138] Duplex communication systems, such as FDD and TDD, possess unique advantages and limitations. FDD, which utilizes continuous time-domain resources, offers low latency but suffers from low throughput because the transmit and receive frequency bands are separated. In TDD mode, which uses the entire frequency band, latency increases as time-domain resources are divided between the downlink and uplink. Therefore, the fixed allocation of time and frequency resources in TDD and FDD presents both advantages and disadvantages.

[0139] To overcome the limitations of existing duplex communication methods, single-frequency full-duplex communication can be introduced, which can improve spectral efficiency and flexibility. Single-frequency full-duplex communication can theoretically double spectral efficiency by allowing the downlink and uplink to exist on the same spectral frequency.

[0140] Single-frequency full-duplex communication is a method that improves spectrum efficiency, but serious interference can occur if signals are transmitted simultaneously in the downlink and uplink. Consequently, the design of base stations and terminals becomes more complex, which can lead to increased costs.

[0141] Accordingly, subband non-overlapping full duplex (SBFD) communication can be discussed. Figure 9 illustrates an example of a slot structure for SBFD.

[0142] Referring to Fig. 9, SBFD refers to a communication in which a transmitting subband and a receiving subband exist within a single symbol, and simultaneous transmission and / or reception can be performed through a single symbol. The SBFD communication method can improve upon existing limitations because it allows simultaneous transmission and / or reception to be performed in each subband where base stations do not overlap.

[0143] The method of classifying subbands in SBFD can be determined in various ways. For the sake of convenience of explanation, it is assumed that within a TDD carrier, SBFD subbands consist of a single RB or a continuous set of RBs for the same transmission direction. Additionally, an SBFD symbol is defined as a symbol containing the subband that the base station uses for SBFD operation.

[0144] The maximum number of UL subbands for SBFD operation in SBFD symbols within the TDD carrier can be set to one as shown in FIG. 9, but can be expanded later. The location of the subbands is not specifically limited. Therefore, unlike FIG. 9, the UL subbands can be located on one side of the carrier or in the middle of the carrier. If necessary, guard bands may be included between the subbands.

[0145] In addition, SBFD operation can be supported in SSB symbols. Here, SSB can be either CD-SSB (cell defining SSB) or NCD-SSB (non-cell defining SSB).

[0146] For smooth SSB detection and measurement, an SBFD-aware UE is not allowed to transmit over SSB symbols, but may be allowed to receive within the DL BWP of SSB symbols. In this case, there is a disadvantage that the UL opportunity may be reduced. To improve this, the SBFD-aware UE may be allowed to transmit over SSB symbols. In this case, the UE may be configured to transmit UL only in the UL subband based on scheduling, configuration, UE measurement, or priority rules by the base station. If the SBFD-aware UE performs transmission over SSB symbols, it may have a negative impact on SSB detection and measurement.

[0147] It may be permitted to configure SBFD symbols and non-SBFD symbols within a single slot. However, if the frequency of transitions between SBFD and non-SBFD symbols is high, implementation complexity increases, and interruptions in transmission and reception may occur during transitions. Therefore, to avoid frequent transitions between SBFD and non-SBFD symbols, limitations on the maximum number of transition points between SBFD and non-SBFD symbols may be considered from the perspective of SBFD subband configuration. For example, within the TDD UL / DL pattern period, up to two transition points—such as one transition point from a non-SBFD symbol to an SBFD symbol and one transition point from an SBFD symbol to a non-SBFD symbol—can be configured to be placed at the slot boundary or within the slot. Depending on channel conditions and implementation, it may also be necessary to set a protection period between SBFD and non-SBFD symbols.

[0148] The time and frequency positions of subbands within the TDD carrier can be set in various ways. Additionally, whether the base station instructs the terminal on the time and / or frequency positions of the subbands to be used for SBFD operation can also be determined in various ways. The terminal can be set in one of four methods, typically according to Table 4 below, while in an RRC connection state.

[0149] Information regarding subbands notified to the terminal Operation method of the terminal 1st SBFD Operation Option: None (Existing method) 2nd SBFD Operation Option: None SBFD-aware terminal: Introduction of new operation related to SBFD SBFD-non-aware terminal: Existing method 3rd SBFD Operation Option: Subband time location SBFD-aware terminal: Introduction of new operation related to SBFD SBFD-non-aware terminal: Existing method 4th SBFD Operation Option: Subband time location and frequency location SBFD-aware terminal: Introduction of new operation related to SBFD SBFD-non-aware terminal: Existing method

[0150] Among the four options, the fourth SBFD operation option can be set as the criterion for SBFD operation in at least the RRC connection state. SBFD symbols can be used in the random access phase. If random access in SBFD symbols is allowed for SBFD-aware terminals, random access latency can be reduced, the probability of PRACH collisions can be reduced, and the coverage of PRACH and Msg3 can be improved. However, the transmission of PRACH and Msg3 in the UL subband of SBFD symbols may cause cross-link interference (CLI) between terminals. Therefore, additional signaling may be required to compensate for this. For example, a method may be used in which random access in SBFD symbols is allowed only for the transmission of PRACH and Msg3 of symbols configured from TDD-UL- to DL.

[0151] Semi-static configurations of subband time and frequency positions may be used to indicate subband positions for SBFD operation. In the case of semi-static configurations of subband time positions for SBFD operation, the SBFD subband time position may be explicitly or implicitly indicated within a certain period. Additionally, in the case of semi-static configurations of subband frequency positions for SBFD operation, the frequency position of at least the UL subband may be explicitly or implicitly indicated. Typically, for semi-static SBFD, settings regarding the DL subband and guard band may be used as follows. Here, the settings regarding the guard band may be applied only if a guard band exists.

[0152] - 1st DL subband option: The frequency position of the DL subband is explicitly set. The guard band may be implicitly passed to an RB that does not belong to the UL subband or the DL subband.

[0153] - 2nd DL subband option: The number of RBs for the guard band is explicitly set. The DL subband may be implicitly passed to an RB that does not belong to the UL subband or guard band.

[0154] Here, in the case of a semi-static SBFD, the SBFD-aware terminal does not transmit UL channel / signals or receive DL channel / signals in the aware guard band. For a semi-static configuration of subband frequency positions for SBFD operation, the frequency positions of the UL / DL subbands can be transmitted using a CRB (common resource block) grid. For a semi-static configuration of subband positions, the same subband frequency resource can be considered as a baseline in different SBFD symbols.

[0155] An SBFD-aware terminal semi-statically configured as a UL subband within an SBFD symbol configured as a downlink can be configured as follows.

[0156] The terminal may allow UL transmission within the UL subband within the symbol and DL reception within the DL subband within the symbol. UL transmission outside the UL subband is not allowed within the symbol. The frequency location of the DL subband may be known to the SBFD-aware terminal. The frequency location of the DL subband may be conveyed to the terminal explicitly or implicitly. Here, within the symbol, UL transmission is within the active UL BWP and DL reception is within the active DL BWP. Whether DL reception outside the semi-statically configured DL subband is allowed in a symbol configured as a downlink for an SBFD-aware UE may depend on the following options.

[0157] - Option 1 (Semi-static SBFD): DL reception outside the semi-statically configured DL subband is not allowed.

[0158] - Option 2: (Dynamic SBFD): DL reception outside the semi-statically configured DL subband is allowed.

[0159] In addition, for SBFD operation in a flexibly configured symbol, the SBFD recognition terminal can be operated through the first flexible SBFD setting and the second flexible SBFD setting as follows.

[0160] 1. Flexible SBFD Configuration: The terminal is allowed to transmit UL within the UL subband within the symbol, and may allow to receive DL within the DL subband within the symbol. However, UL transmission outside the UL subband is not allowed within the symbol. The frequency location of the DL subband may be known to the UE regarding the SBFD. Whether DL reception outside the DL subband is allowed within the symbol can be configured in various ways and is not limited to a specific method.

[0161] Second Flexible SBFD Configuration: Within a symbol, the terminal is allowed to transmit UL within the UL subband, and may allow DL reception within the DL subband. The frequency location of the DL subband may be known to the UE regarding SBFD. RBs outside the UL subband may be used as UL or DL, excluding guard bands, and from the base station's perspective, the transmission direction of all RBs within a symbol is used identically.

[0162] SBFD-aware UE operation, whether signaling of the guard band is required, and whether symbols can be converted to DL-only symbols can be configured in various ways and are not limited to any specific method.

[0163] Here, in both the first dynamic SBFD configuration and the second dynamic SBFD configuration, within a symbol, UL transmission is within the active UL BWP and DL reception is within the active DL BWP. For all RBs outside the UL subband, the terminal may be configured not to use separate RBs for DL ​​and UL simultaneously.

[0164] In addition, whether DL reception outside the semi-statically configured DL subband and UL transmission outside the semi-statically configured UL subband are allowed in dynamically configured symbols for SBFD-aware UEs may depend on the following options.

[0165] - Option 1 (Semi-static): DL reception outside the semi-statically configured DL subband is not allowed, and UL transmission outside the semi-statically configured UL subband is not allowed.

[0166] - Option 2 (Dynamic SBFD): DL reception outside the semi-statically configured DL subband is allowed. However, UL transmission outside the semi-statically configured UL subband is not allowed.

[0167] - Option 3 (Dynamic SBFD): DL reception outside the semi-statically configured DL subband is allowed, and UL transmission outside the semi-statically configured UL subband is allowed.

[0168] When using dynamic SBFD configuration instead of semi-static SBFD configuration, the following phenomena may occur. Compared to semi-static SBFD, dynamic SBFD can adapt better to UL / DL resource requirements based on UL / DL traffic load.

[0169] Dynamic SBFD increases base station implementation complexity due to dynamic antenna / panel switching and filter / RF tuning, and may result in resource loss due to switching times. Additionally, the CLI between base stations increases, and scheduling complexity increases. If a terminal supports dynamic SBFD, UE implementation complexity may increase, and the CLI between terminals may increase due to dynamic SBFD.

[0170] If dynamic SBFD is supported, the following options may be considered.

[0171] Option 1: Dynamic SBFD can be configured via DCI used to schedule DL reception outside the semi-statically configured SBFD DL subband and / or UL transmission outside the semi-statically configured SBFD UL subband.

[0172] - Option 2: Dynamic SBFDs can be configured via a non-scheduling DCI. The non-scheduling DCI can indicate whether a symbol is an SBFD symbol.

[0173] - Option 3: Dynamic SBFD can be set by MAC-CE, which indicates whether a symbol is an SBFD symbol.

[0174] In addition, inter-slot / in-slot / inter-repetition / group frequency hopping using DMRS bundling of PUSCH / PUCCH can be further considered. Thus, resource allocation in the frequency domain including frequency hopping, resource allocation in the time domain, and procedures regarding the power domain and space domain can be improved.

[0175] If the boundary between the RBG and SBFD subbands is not aligned, it may be configured whether the DL RBG portion inside / outside the DL subband and the UL RBG portion inside / outside the UL subband can be used for resource allocation within the frequency domain. For an SBFD-aware terminal, the DL RBG portion inside the DL subband and the UL RBG portion inside the UL subband may be used for better resource utilization. However, at least for a semi-static SBFD, the RBG portion outside the DL subband may not be used for DL ​​reception and the RBG portion outside the UL subband may not be used for UL transmission.

[0176] In the case of semi-static SBFD, for CSI reporting subbands that overlap with SBFD subband boundaries, CSI reporting may be performed for the SBFD-aware terminal based on CSI-RS resources excluding CSI-RS resources outside the DL subband. In the case of semi-static SBFD, for CSI-RS resources that overlap with SBFD subband boundaries, only CSI-RS resources within the DL subband may be valid for the SBFD-aware terminal. For the SBFD-aware terminal, PRG(s) with sizes of 2 and 4 that overlap with subband boundaries for PDSCH, and settings for broadband precoders for discontinuous DL subbands may also be additionally configured.

[0177] In the case of PRGs that overlap with subband boundaries, if a portion of the DL PRG within the DL subband can be used, scheduling flexibility and resource utilization can be improved, but channel estimation quality is degraded compared to the PRG due to the limited RB of the partial PRG, and UE complexity may increase to implement these functions.

[0178] If PRG is determined to be broadband, the following two options may be considered. The first is an option where non-contiguous frequency resources are allocated across two DL subbands, but adjacent frequency resources are allocated within each DL subband. The second is an option where discontinuous frequency resources cannot be allocated across two DL subbands.

[0179] For frequency resource allocation for CSI-RS in the downlink subband for SBFD-aware terminals, the following four options may be considered, and the CSI-RS sequence generation procedure may be applied as is with the existing procedure.

[0180] - Option 1: Two connected adjacent CSI-RS resources

[0181] - Option 2: One CSI-RS resource

[0182] - Option 2-1: Allocation of non-contiguous CSI-RS resources

[0183] - Option 2-2: Allocation of a single continuous CSI-RS resource along with discontinuous CSI-RS resources derived by excluding frequency resources outside the DL subband

[0184] For UL transmission and DL reception via SBFD and non-SBFD symbols in different slots (each transmission / reception within the slot contains either all SBFD symbols or all non-SBFD symbols), the following methods may be considered. First, a method may be considered where transmission / reception is performed using only SBFD symbols or only non-SBFD symbols. In this case, a procedure may be used to indicate that the transmission / reception status is valid within one symbol type and invalid within another. Second, a method may be considered where transmission / reception is performed using both SBFD and non-SBFD symbols. Which method is used can be determined through base station configuration or scheduling. Frequency resources, power control, and beam / space relationships regarding all transmissions / receptions may be the same for the first method, but may be configured differently for the second method and may require additional signaling.

[0185] Frequency resource allocation for an SBFD-aware terminal can be performed in the following way. First, frequency domain resource allocation for SBFD slots and non-SBFD slots can be determined separately. In this case, separate frequency domain resource allocation settings / indications for SBFD slots and non-SBFD slots can be performed, or separate frequency resources for SBFD slots and non-SBFD slots can be determined according to a single frequency domain resource allocation setting / indication, and a single frequency domain resource allocation setting / indication and RB offset can be used.

[0186] Secondly, rate matching or puncturing may be performed on DL / UL channels / signals at RBs outside the DL / UL subband. Thirdly, DL / UL channels / signals that overlap with RBs outside the DL / UL subband in SBFD slots may be deleted or deferred.

[0187] If there are physical channels / signals mapped to SBFD and non-SBFD symbols within a slot, the terminal may transmit or not transmit the physical channels / signals within the slot, or transmit or receive the physical channels / signals within the slot only under specific conditions. Here, specific conditions may depend on whether phase continuity can be maintained between SBFD and non-SBFD symbols, whether transmit and receive parameters such as power control, space / QCL, and UL timing applied to SBFD and non-SBFD symbols are the same or different, and whether there is a guard period between SBFD and non-SBFD symbols.

[0188] For SBFD-aware terminals, two CSI reporting configurations are delivered to the terminal for CSI reports associated with periodic / semi-permanent CSI-RS, one configuration may be associated with SBFD symbols and the other with non-SBFD symbols. In this case, the CSI-RS associated with each CSI-ReportConfig can be limited to only SBFD symbols or non-SBFD symbols through the appropriate periodic base station configuration. However, this method may limit the flexibility of base station configuration. Additionally, a single CSI reporting configuration may be associated with both SBFD symbols and non-SBFD symbols. In this case, measurement limits may be configured according to existing standards so that the terminal does not average CSI measurements across SBFD and non-SBFD symbols.

[0189] For SRS, PUCCH, and PUSCH of SBFD symbols and non-SBFD symbols in different slots, they can be configured to have separate resource, FH parameters, UL power control parameters, and / or beam / space relationships.

[0190] The base station can configure the CORESET and search space in such a way that the MO of the search space occurs in either an SBFD or non-SBFD symbol, or the MO of the search space occurs in both SBFD and non-SBFD symbols, but the associated CORESET does not overlap with the DL subband boundary of the SBFD symbol.

[0191] When configuring the CORESET and search space such that MOs of the search space occur in both SBFD and non-SBFD symbols and the associated CORESET overlaps with the DL subband boundary of the SBFD symbol, the following options may be considered.

[0192] - Option 1: Separate valid resources for CORESET from SBFD symbols and non-SBFD symbols

[0193] - Option 2: Rate matching or punching in the REG of the PDCCH outside the DL subband

[0194] - Option 3: If a PDCCH candidate is mapped to one or more REs that overlap with REs outside the DL subband, the terminal does not monitor the PDCCH candidate

[0195] - Option 4: Delete the search space if the connected CORESET overlaps with an RB outside the DL subband.

[0196] - Option 5: Separate the search space associated with the CORESET of SBFD and non-SBFD symbols

[0197] Interference within the base station itself due to time misalignment can also be considered. Time misalignment between UL reception and DL transmission caused by the setting of non-zero timing advance at the terminal can cause increased interference, assuming there is no base station transmission chain failure and no filtering of the DL subband in the base station reception chain.

[0198] The increase in self-interference of the UL subband due to time misalignment between UL reception and DL transmission at the base station can be very small (~1 dB) considering the failure of the base station transmission chain and the DL subband filtering in the base station reception chain. Filtering to suppress self-interference of the DL subband in the base station reception chain may result in a slight switching time / delay to bypass the filter in UL symbols and may result in insertion loss.

[0199] The present disclosure describes a technology related to subbad full-duplex (SBFD) in wireless communication systems. In particular, the present disclosure proposes various embodiments related to signaling and procedures involving SBFD symbols and non-SBFD symbols. Here, SBFD refers to a technology that allows simultaneous transmission and / or reception of downlink (hereinafter 'DL') and uplink (hereinafter 'UL') in a portion of the total system-to-bandwidth. Through SBFD, cell yield can be improved, latency reduced, transmission and reception signal reliability improved, and coverage increased.

[0200] FIG. 10 illustrates an example of SBFD configuration in a wireless communication system according to one embodiment of the present disclosure. Referring to FIG. 10, a portion of the system bandwidth may be configured as a DL subband and a UL subband for SBFD. A base station may transmit configuration information regarding the UL / DL subbands associated with SBFD to a terminal via upper-layer signaling (e.g., SIB, RRC, etc.). The terminal may perform transmit and / or receive operations based on the UL / DL subband configuration information configured by the base station. For example, the terminal may receive or transmit data from a base station or another terminal based on the UL / DL subband configuration information configured by the base station.

[0201] As an example of UL / DL subband configuration for SBFD operation, the UL / DL subband may be configured on a carrier operating in TDD. The UL / DL subband may be configured on a slot or symbol configured as downlink or flexible among TDD slots or symbols. One slot may be configured with an OFDM (Orthogonal Frequency Division Multiplexing) symbol configured as a UL / DL subband (hereinafter, “SBFD symbol”) and a symbol not configured as a full-duplex subband (hereinafter, “non-SBFD symbol”).

[0202] According to one example of the present disclosure, a time domain pattern and period for at least one SBFD symbol may be configured. For example, a specific SBFD symbol pattern may be configured continuously within a TDD UL / DL area configured in an upper layer. For example, the SBFD symbol pattern may be configured continuously according to the pattern and period of the TDD UL / DL (e.g., parameters configured by TDD-UL-DL-Config, TDD-UL-DL-ConfigCommon, etc.). For example, the SBFD symbol pattern may be repeated periodically. In this case, the period of the SBFD symbol pattern may be the same as the period of the TDD UL / DL pattern. Here, configuration information for at least one of a start slot index, a start symbol index within the start slot index, a last slot index, or a last symbol index within the last slot index may be provided to set the pattern in the time domain for the SBFD symbol.

[0203] According to one example of the present disclosure, frequency positions corresponding to UL / DL subbands within an SBFD symbol may be explicitly configured through upper-level signaling. For example, the frequency positions and bandwidth sizes of UL subbands, and the frequency positions and bandwidth sizes of DL subbands, may each be configured through upper-level signaling. Here, a guardband may be located between the UL subband and the DL subband. For example, the guardband may correspond to a band that is not composed of the UL subband and the DL subband. The frequency positions of UL / DL subbands may be configured independently according to the subcarrier spacing (SCS) value. In other words, UL / DL subbands with different SCS values ​​may have different frequency positions. Conversely, UL / DL subbands with different SCS values ​​may have the same frequency position. For the configuration of UL / DL subbands within an SBFD symbol, a starting PRB index and a bandwidth size for each subband may be indicated for each subband. For setting UL and / or DL ​​subbands within the SBFD symbol, a start PRB index and a bandwidth size for each subband may be indicated for each subband.

[0204] According to one example of the present disclosure, resources may be allocated for UL transmission and DL reception. The allocated resources may be scheduled across SBFD symbols and non-SBFD symbols. Here, the SBFD symbols and non-SBFD symbols may be symbols located in different slots. In this case, the terminal may receive a configuration for resource allocation from signaling. For example, the configuration for resource allocation may be as follows.

[0205] - Configuration 1: UL transmission or DL ​​reception may be performed on only one of either SBFD symbols or non-SBFD symbols. That is, the terminal may determine that only the resources assigned to one symbol type among the resources allocated across SBFD symbols or non-SBFD symbols are valid. For example, the terminal may perform UL transmission or DL ​​reception using only the resources assigned to SBFD symbols. As another example, the terminal may perform UL transmission or DL ​​reception using only the resources assigned to non-SBFD symbols. In the case of Configuration 1, the valid symbol type (e.g., whether the valid symbol type is an SBFD symbol or a non-SBFD symbol) may be additionally explicitly set or implicitly determined based on scheduling information for UL and / or DL ​​transmission and reception.

[0206] -Configuration 2: UL transmission or DL ​​reception can be performed on SBFD symbols and non-SBFD symbols. That is, the terminal can determine that resources allocated across SBFD symbols or non-SBFD symbols are valid. For example, the terminal can perform communication using resources allocated to SBFD symbols and resources allocated to non-SBFD symbols. In this case, the terminal can use resources allocated to SBFD symbols and resources allocated to non-SBFD symbols without distinction.

[0207] The aforementioned Configuration 1 or Configuration 2 may be signaled by a base station. In other words, a terminal may decide whether to operate based on Configuration 1 or based on Configuration 2 according to instructions from the base station. The signaling may include upper-layer signaling (e.g., signaling using RRC messages), MAC signaling (e.g., signaling using MAC CE), or physical layer signaling. The signaling for indicating Configuration 1 or Configuration 2 may include cell-specific signaling or terminal-specific signaling. For example, if Configuration 1 or Configuration 2 is configured by cell-specific signaling, terminals included in a single cell may operate based on the same Configuration. If Configuration 1 or Configuration 2 is configured by terminal-specific signaling, each terminal may operate based on Configuration 1 or Configuration 2 based on the received signaling. As another example, the signaling may indicate different Configurations for each physical layer channel. In other words, transmission or reception based on different configurations can be performed for each physical layer channel (e.g., PDSCH, PDCCH, PUCCH, PUSCH, SRS, CSI-RS). For example, a terminal can perform reception of PDSCH based on configuration 1 and transmission of PUSCH based on configuration 2, and these configurations can be configured per terminal or per cell. That is, cell-specific signaling and terminal-specific signaling may include physical layer channel-specific configurations.

[0208] The UL / DL subband for SBFD operation can be configured via cell-specific signaling (e.g., SIB or cell-common RRC) or terminal-specific signaling (e.g., terminal-specific RRC). Here, the configuration and subcarrier spacing of the UL / DL subband for SBFD can be configured via the same type of signaling. For example, if the UL / DL subband configuration for SBFD is configured by cell-specific signaling, the subcarrier spacing of the corresponding UL / DL subband can also be configured via cell-specific signaling. As an example, the SCS of the UL / DL subband can follow the SCS configuration value included in the TDD configuration configured for cell-common (e.g., the value configured by referenceSubcarrierSpacing in the TDD-UL-DL-ConfigCommon configuration information).

[0209] Meanwhile, in a wireless communication system (e.g., a 5G NR system), a Bandwidth Part (hereinafter BWP) to be used for actual transmission and reception within the total system bandwidth may be configured for purposes such as improving cell yield, reducing latency, and reducing terminal power consumption. A base station may configure one or more BWPs for the terminal for transmission and / or reception in the UL and DL. At least one BWP may be configured from the base station to the terminal. One of the configured BWPs may be activated. The terminal and the base station may perform communication using the activated BWP.

[0210] For example, the following parameters may be configured for each DL BWP and UL BWP for the terminal.

[0211] - Subcarrier spacing (e.g., subcarrierSpacing)

[0212] - CP (cyclic prefix) length (e.g., cyclicPrefix)

[0213] - Frequency location and bandwidth of each BWP (e.g., locationAndBandwidth)

[0214] - ID of each BWP (e.g., BWP-Id)

[0215] When the terminal and / or base station operates in the TDD band, DL BWP and UL BWP configured with the same BWP ID are connected to each other, and DL BWP and UL BWP having the same BWP ID can be activated. Additionally, when the terminal and / or base station operates in the TDD band, the center frequencies of DL BWP and UL BWP may be the same.

[0216] A terminal can receive a downlink physical layer channel (e.g., PDCCH (Physical Downlink Control Channel) or PDSCH (Physical Downlink Shared Channel)) based on the SCS value and CP length value configured in the DL BWP at the activated DL BWP. Hereinafter, receiving or transmitting a physical layer channel may refer to receiving or transmitting a signal through the physical layer channel. Receiving or transmitting at the activated BWP may refer to receiving or transmitting using resources within the activated BWP. Likewise, a terminal can transmit an uplink physical layer channel (e.g., PUCCH (Physical Uplink Control Channel) or PUSCH (Physical Uplink Shared Channel)) based on the SCS value and CP length value configured in the UL BWP at the activated UL BWP.

[0217] FIG. 11 illustrates an example of a system configuration that appears by a combination of a configuration for SBFD and a configuration for BWP in a wireless communication system according to one embodiment of the present disclosure. Hereinafter, the configuration for SBFD may be referred to as the SBFD configuration, and the configuration for BWP may be referred to as the BWP configuration.

[0218] Referring to FIG. 11, multiple BWPs, e.g., BWP#1 and BWP#2, are configured, BWP#1 is activated, and BWP#2 is deactivated. Additionally, in the example of FIG. 11, UL / DL subbands for SBFDs are configured in the second and third slots. Here, for SBFD symbols configured with UL / DL subbands, resource areas (e.g., Physical Resource Blocks (PRBs)) available for actual UL / DL transmission and / or reception can be defined as follows.

[0219] - UL Usable PRB: UL subband frequency resource area within an activated UL BWP

[0220] - DL Available PRB: DL subband frequency resource area within an active DL BWP

[0221] That is, the base station and the terminal can perform uplink transmission and / or reception for SBFD symbols through the UL available PRB in the active UL BWP, and perform downlink transmission and / or reception through the DL available PRB in the active DL BWP.

[0222] For UL / DL transmission and reception scheduled across SBFD symbols and non-SBFD symbols within a single slot, the terminal may not perform transmission and reception for the corresponding UL / DL in that slot. However, UL transmission operation may be exceptionally permitted in the following cases.

[0223] - For a PRACH (Physical Random Access Channel) in a valid RO (Random Access Occasion) set across SBFD symbols and non-SBFD symbols, the terminal can perform transmission.

[0224] - For PUSCH repetition type B, the terminal can perform transmission.

[0225] For UL / DL transmits and receives scheduled across SBFD and non-SBFD symbols in different slots, whether the transmits and receives are performed based on Configuration #1 or Configuration #2 can be configured per UL / DL BWP. In this case, the terminal may support Configuration #1 as a default capability. Alternatively, whether it supports Configuration #2 may be known to the base station through a UE capability report. The base station may configure Configuration #2 per BWP for terminals that support Configuration #2. If a specific DL BWP is configured to Configuration #2, the terminal may perform operations based on Configuration #2 when performing DL reception at that DL BWP. For example, the terminal may operate under Configuration #2 only for PDSCH reception at the DL BWP. If a specific UL BWP is configured to Configuration #2, the terminal may perform operations based on Configuration #2 when performing UL transmits at that UL BWP. At this time, even if the UL BWP is set to configuration #2, the transmission of the SRS (sounding reference signal) can be operated based on configuration #1.

[0226] A system operating with SBFD can support frequency hopping (FH) functionality for PUSCH. Here, frequency hopping functionality includes the ability to change the frequency at time intervals during PUSCH transmission. Frequency hopping offset values ​​can be configured separately for PUSCH transmission in SBFD symbols and for PUSCH transmission in non-SBFD symbols, respectively. Detailed operation related to this is described below.

[0227] - For a Type 1 CG PUSCH operating in Configuration #2, the frequency hopping offset value in the SBFD symbol may be specified as a new RRC parameter in rrc-ConfiguredUplinkGrant. Here, rrc-ConfiguredUplinkGrant may be a parameter, an IE (information element), or a field included in ConfiguredGrantConfig. If the frequency hopping offset value in the SBFD symbol is not configured, frequency hopping operation in the SBFD symbol is disabled.

[0228] - For PUSCH scheduled by DCI and Type 2 CG PUSCH, frequency hopping offset values ​​in SBFD symbols and non-SBFD symbols can be specified as new RRC parameters in PUSCH-Config. Here, multiple frequency hopping offset values ​​can be configured, and frequency hopping offset values ​​can be dynamically specified through the DCI format. If no frequency hopping offset value is configured in an SBFD symbol, frequency hopping operation in the SBFD symbol is disabled.

[0229] For intra-slot frequency hopping in the SBFD symbol for PUSCH, the starting RB value at the i-th hop can be determined as in Equation 1.

[0230] [Mathematical Formula 1]

[0231] RB start =RB start , i=0

[0232] RB start =RB UL SB start + (RB start -RB UL SB start +RB offset )modN size UL SB , i=1

[0233] In mathematical formula 1, RB UL SB startis the starting PRB index of UL available PRBs based on the start of the UL-activated BWP, N size UL SB is the number of UL-usable PRBs, RB start is the starting PRB index of the first PUSCH hop based on the start of the UL-activated BWP, RB offset represents the frequency hopping offset for PUSCH in the SBFD symbols. Here, if Configuration #2 is configured, RB start represents the starting PRB index relative to the UL-activated BWP start point after the RB offset between the non-SBFD symbol and the SBFD symbol has been applied, and n μ s can refer to the slot number.

[0234] When DMRS bundling is not applied (i.e., pusch-DMRS-Bundling is disabled), for inter-slot frequency hopping in SBFD symbols for PUSCH or inter-slot frequency hopping for PUSCH in SBFD symbols scheduled in DCI format 0_0, slot n μ s The hop start RB at can be determined as in Equation 2. Here, DCI format 0_0 may be scrambled with RAR UL grant or TC-RNTI.

[0235] [Mathematical Formula 2]

[0236] RB start (n μ s )=RB start , n μ s mod2=0

[0237] RB start (n μ s )=RB UL SB start + (RB start -RB UL SB start +RB offset )modN sizeUL SB , n μ s mod2=1

[0238] In mathematical equation 2, RB UL SB start is the starting PRB index of UL available PRBs based on the start of the UL-activated BWP, N size UL SB is the number of UL-usable PRBs, RB start is the starting PRB index of the first PUSCH hop based on the start of the UL-activated BWP, RB offset represents the frequency hopping offset for PUSCH in the SBFD symbols. Here, if Configuration #2 is configured, RB start represents the starting PRB index relative to the UL-activated BWP start point after the RB offset between the non-SBFD symbol and the SBFD symbol has been applied, and n μ s can refer to the slot number.

[0239] FIG. 12 illustrates an example of inter-slot frequency hopping for a PUSCH configured with SBFD configuration #1. Referring to FIG. 12, RB offset,SB The value represents the frequency hopping offset value in the SBFD symbol. In Fig. 12, the number of repeat transmissions for PUSCH is set to 6.

[0240] FIG. 13 illustrates an example of inter-slot frequency hopping for a PUSCH configured with SBFD configuration #2. Referring to FIG. 13, RB offset,SB and RB offset,NSB The values ​​represent the frequency hopping offset values ​​in the SBFD symbol and the non-SBFD symbol, respectively. In Fig. 13, the number of repeat transmissions for PUSCH is set to 8.

[0241] A system operating with SBFD can support frequency hopping (FH) functionality for PUCCH. Here, frequency hopping functionality includes the ability to change the frequency at time intervals during PUCCH transmission and transmit. For frequency hopping operation for PUCCH, configurations for frequency hopping in SBFD symbols and non-SBFD symbols may be provided separately. Specifically, within the same PUCCH-Resource configuration, the startingPRB parameter and the secondHopPRB parameter for frequency hopping may be configured separately for SBFD symbols and non-SBFD symbols, respectively.

[0242] Meanwhile, existing NR systems support DMRS bundling operations for PUSCH and PUCCH. When a transmission is performed on a PUSCH or PUCCH configured with DMRS bundling, the terminal must maintain power consistency and phase continuity identically within the Time Domain Window Length (TDW) for multiple uplink transmissions. Specifically, the terminal performs the operations described in Table 5.

[0243] The UE shall maintain power consistency and phase continuity within an actual TDW, across PUSCH transmissions of PUSCH repetition Type A scheduled by DCI format 0_1, 0_2 or 0_3, or PUSCH repetition Type A with a configured grant, or PUSCH repetition type B or TB processing over multiple slots, or across PUCCH transmissions of PUCCH repetition, in case the actual TDW is created in response to frequency hopping, or in response to the use of a different SRS resource set association for the two PUSCH transmissions of PUSCH repetition type A, or PUSCH repetition type B, or in response to the use of different spatial relations or different power control parameters for the two PUCCH transmissions of PUCCH repetition, or in response to any event not triggered by DCI or MAC-CE.The UE maintains power consistency and phase continuity within an actual TDW, across PUSCH transmissions of PUSCH repetition Type A scheduled by DCI format 0_1, 0_2 or 0_3, or PUSCH repetition Type A with a configured grant, or PUSCH repetition type B or TB processing over multiple slots, or across PUCCH transmissions of PUCCH repetition, in case the actual TDW is created in response to an event triggered by DCI other than frequency hopping or the use of a different SRS resource set association for the two PUSCH transmissions of PUSCH repetition type A, or PUSCH repetition type B, or the use of different spatial relations or different power control parameters for the two PUCCH transmissions of PUCCH repetition, or in response to an event triggered by MAC-CE, subject to UE capability. ofdmrs-BundlingRestart[13, TS 38.306] and whenpusch-WindowRestartorpucch-WindowRestartis enabled.

[0244] The terminal may not maintain power consistency and phase continuity for uplink transmissions in certain events. Specifically, the terminal may perform the actions described in Table 6 in certain events. Events in which power consistency and phase continuity for uplink transmissions are not maintained are further described in the following third embodiment.

[0245] Events which cause power consistency and phase continuity not to be maintained across PUSCH transmissions of PUSCH repetition type A scheduled by DCI format 0_1, 0_2 or 0_3, or PUSCH repetition Type A with a configured grant, or PUSCH repetition type B or TB processing over multiple slots, or PUCCH transmissions of PUCCH repetition, within the nominal TDW, are:- A downlink slot or downlink reception or downlink monitoring based ontdd-UL-DL-ConfigurationCommonandtdd-UL-DL-ConfigurationDedicatedfor unpaired spectrum.- For the UE indicating the capabilitydmrs-BundlingNonBackToBackTXordmrs-BundlingNonBackToBackTX-PerBCin [13, TS 38.306], the gap between any two consecutive PUSCH transmissions, or the gap between any two consecutive PUCCH transmissions, exceeds 13 symbols for normal cyclic prefix or exceeds 11 symbols for extended cyclic prefix.- For the UE not indicating either of the capabilitiesdmrs-BundlingNonBackToBackTXordmrs-BundlingNonBackToBackTX-PerBCin [13, TS 38.306], a non-zero symbol gap is scheduled between any two consecutive PUSCH transmissions or between any two consecutive PUCCH transmissions.- The gap between any two consecutive PUSCH transmissions, or the gap between any two consecutive PUCCH transmissions, does not exceed 13 symbols but other uplink transmissions are scheduled between the two consecutive PUSCH transmissions or the two consecutive PUCCH transmissions.- For PUSCH transmissions of PUSCH repetition type A, or PUSCH repetition type B or TB processing over multiple slots, a dropping or cancellation of a PUSCH transmission according to clause 9, clause 11.1 and clause 11.2A of [6, TS 38.213]or due to cell DRX operation.- For PUCCH transmissions of PUCCH repetition, a dropping or cancellation of a PUCCH transmission according to clause 9, clause 9.2.6 and clause 11.1 of [6, TS 38.213] or due to cell DRX operation.- For any two consecutive PUSCH transmissions of PUSCH repetition type A, or PUSCH repetition type B, and when two SRS resource sets are configured insrs-ResourceSetToAddModListorsrs-ResourceSetToAddModListDCI-0-2with higher layer parameterusageinSRS-ResourceSetset to 'codebook' or 'noncodebook', a different SRS resource set association is used for the two PUSCH transmissions of PUSCH repetition type A, or PUSCH repetition type B, according to Clause 6.1.2.1.- For any two consecutive PUCCH transmissions of PUCCH repetition, and when a PUCCH resource used for repetitions of a PUCCH transmission by a UE includes first and second spatial relations or first and second sets of power control parameters, as described in [10, TS 38.321] and in clause 7.2.1 of [6, TS 38.213], different spatial relations or different power control parameters are used for the two PUCCH transmissions of PUCCH repetition, according to Clause 9.2.6 of [6, TS 38.213].- Uplink timing adjustment in response to a timing advance command according to clause 4.2 of [6, TS 38.213].- Frequency hopping.- For reduced capability half-duplex UEs,- a dropping or cancellation of a PUSCH or PUCCH transmission according to clause 17.2 of [6, TS 38.213] or- an overlapping of the gap between two consecutive PUSCH or two consecutive PUCCH transmissions and any symbol of downlink reception or downlink monitoring.

[0246] In the existing NR system, when inter-slot frequency hopping and DMRS bundling are applied to PUSCH, slot n μ s The starting RB of each frequency hop can be determined as in Equation 3.

[0247] [Mathematical Formula 3]

[0248] RB start (n μ s )=RB start , ㄴ n μ s / N FH 」mod2=0

[0249] RB start (n μ s )=(RB start +RB offset )modN size BWP, n n μ s / N FH 」mod2=1

[0250] In mathematical equation 3, n μ sis the current slot number within the system radio frame, N FH is the value of the upper-level parameter pusch-FrequencyHopping-Interval, RB start is the starting PRB index within UL BWP, RB offset represents the frequency hopping offset in the RBs between two frequency hops. Here, RB start It can be calculated from resource block allocation information of resource allocation type 1.

[0251] FIG. 14 illustrates an example of inter-slot frequency hopping for a PUSCH configured with DMRS bundling. Referring to FIG. 14, the frequency hopping interval value (N FH ) consists of 5, and the occasion index value (n) where frequency hopping is performed. μ s / N FH 」mod2) is calculated as 0 or 1 every 5 slots. Here, ㄴ n μ s / N FH In slots where 」mod2 = 0, PUSCH is RB start Transmitted from the location. μ s / N FH In slots where 」mod2 = 0, PUSCH is RB start from RB offset It is transmitted at a frequency-hopped location.

[0252] When DMRS bundling is enabled for a PUCCH that is repeatedly transmitted in an existing NR system, the terminal can perform transmission based on inter-slot frequency hopping for the corresponding PUCCH based on the procedure as shown in Table 7.

[0253] For N repeat PUCCH > 1- the UE repeats the PUCCH transmission with the UCI over N repeat PUCCHslots- if the UE is providedmultipanelSFN-Schemeandapply-IndicatedTCIState= 'both', a repetition of the PUCCH transmission simultaneously uses first and second spatial domain filters corresponding to first and secondTCI-StateorTCI-UL-State- a repetition of the PUCCH transmission in each of the N repeat PUCCH slots has a same number of consecutive symbols, as provided bynrofSymbols- a repetition of the PUCCH transmission in each of the N repeat PUCCHslots has a same first symbol, as provided bystartingSymbolIndexifsubslotLengthForPUCCHis not provided; otherwise mod(startingSymbolIndex,subslotLengthForPUCCH)- the UE is configured byinterslotFrequencyHoppingwhether or not to perform frequency hopping for repetitions of the PUCCH transmission in different slots- if the UE is configured to perform frequency hopping for repetitions of a PUCCH transmission across slots and the UE is providedpucch-DMRS-Bundling= 'enabled'- the UE performs frequency hopping per interval of N interval PUCCH consecutive slots, that start from a slot indicated to the UE and where the UE would transmit a first repetition of the PUCCH, where N interval PUCCH is the value ofpucch-FrequencyHoppingInterval, if provided; otherwise, N interval PUCCH is the value ofpucch-TimeDomainWindowLength- the UE transmits the PUCCH over intervals until the UE transmits the PUCCH in N repeat PUCCHslots, where the first interval has number 0 and each subsequent interval is counted regardless of whether or not the UE transmits the PUCCH in a slot- the UE transmits the PUCCH starting from a first PRB, provided bystartingPRB, in intervals with even number and starting from a second PRB, provided bysecondHopPRB, in intervals of frequency hopping intervals with odd number- the UE does not expect to be configured to perform frequency hopping for a repetition of the PUCCH transmission within a slot- if the UE is not configured to perform frequency hopping for repetitions of a PUCCH transmission across slots and the UE is configured to perform frequency hopping for a repetition of the PUCCH transmission within a slot, the frequency hopping pattern between the first PRB and the second PRB is same within each slot

[0254] 도 15는 DMRS 번들링이 구성된 PUCCH에 대한 슬롯 간 주파수 호핑의 일 예를 도시한다. 도 15를 참고하면, TDW가 10 슬롯으로 구성되고, 주파수 호핑 간격 값(N interval) can be composed of 2. Among the occasions in which PUCCH is repeatedly transmitted, on even occasions, PUCCH is transmitted at the position composed of startingPRB, and on odd occasions, PUCCH is transmitted at the position composed of secondHopPRB.

[0255] Based on the aforementioned frequency hopping and DMRS bundling, the terminal can transmit an uplink signal. The uplink signal of the terminal can be transmitted in at least one of SBFD symbols and non-SBFD symbols. Below, the operation procedures of the terminal and the base station for transmitting and receiving the uplink signal are described, respectively.

[0256] FIG. 16 illustrates an uplink signal transmission procedure according to one embodiment of the present disclosure. The procedure of FIG. 16 can be performed by a terminal.

[0257] Referring to FIG. 16, in step S1601, the terminal receives configuration information related to at least one of SBFD or non-SBFD. The configuration information may include at least one of information related to frequency hopping or information related to DMRS bundling. Here, the information related to frequency hopping or information related to DMRS bundling may be common to both SBFD symbols and non-SBFD symbols. Alternatively, the information related to frequency hopping or information related to DMRS bundling may be for at least one of SBFD symbols and non-SBFD symbols.

[0258] In step S1603, the terminal obtains parameters related to frequency hopping. The parameters related to frequency hopping may be obtained from configuration information. The parameters related to frequency hopping may include at least one of a start RB, RB offset, frequency hopping interval, or number of repeated transmissions for transmitting an uplink signal. The parameters related to frequency hopping may include at least one of parameters for SBFD or parameters for non-SBFD. That is, the parameters related to frequency hopping may be common to SBFD symbols and non-SBFD symbols, or specific to SBFD symbols and non-SBFD symbols, respectively.

[0259] In step S1605, the terminal may transmit an uplink signal based on parameters related to frequency hopping. Here, the uplink signal may be a signal transmitted through at least one of PUCCH or PUSCH. For example, the uplink signal may be transmitted through resources allocated for PUCCH or PUSCH. The terminal may transmit the uplink signal over SBFD symbols and non-SBFD symbols based on configuration information. The uplink signal may be a signal to which at least one of DMRS bundling or frequency hopping is applied. In other words, the terminal may transmit the uplink signal based on at least one of DMRS bundling or frequency hopping.

[0260] FIG. 17 illustrates an uplink signal reception procedure according to one embodiment of the present disclosure. The procedure of FIG. 17 can be performed by a base station.

[0261] Referring to FIG. 17, in step S1701, the base station transmits configuration information related to at least one of SBFD or non-SBFD. The configuration information may include at least one of information related to frequency hopping or information related to DMRS bundling. Here, the information related to frequency hopping or information related to DMRS bundling may be common to both SBFD symbols and non-SBFD symbols. Alternatively, the information related to frequency hopping or information related to DMRS bundling may be for at least one of SBFD symbols and non-SBFD symbols.

[0262] In step S1703, the base station may receive an uplink signal based on parameters related to frequency hopping. Here, the uplink signal may be a signal transmitted through at least one of PUCCH or PUSCH. For example, the uplink signal may be received through resources allocated for PUCCH or PUSCH. The base station may receive the uplink signal across SBFD symbols and non-SBFD symbols based on configuration information. Alternatively, the base station may receive the uplink signal at SBFD symbols or non-SBFD symbols based on configuration information.

[0263] Hereinafter, detailed embodiments for performing frequency hopping are described. The procedures of FIGS. 16 and FIGS. 17 may be performed based on embodiments for performing frequency hopping. For example, PUSCH may be transmitted and received based on the parameters described in the first embodiment, and PUCCH may be transmitted and received based on the parameters described in the second embodiment.

[0264] FIG. 18 illustrates a PUSCH transmission procedure based on frequency hopping according to one embodiment of the present disclosure. The procedure of FIG. 18 may be performed by a terminal. In the procedure of FIG. 18, signal transmission via PUSCH, signal transmission via PUSCH resources, and signal transmission using PUSCH resources may be referred to as PUSCH transmission. In other words, a signal transmitted via PUSCH may be referred to as PUSCH or a PUSCH signal.

[0265] Referring to FIG. 18, in step S1801, the terminal obtains information related to DMRS bundling and parameters related to frequency hopping. The information related to DMRS bundling may include at least one of whether DMRS bundling is applied or the frequency hopping interval when DMRS bundling is applied.

[0266] In step S1803, the terminal transmits a PUSCH with DMRS bundling applied to SBFD symbols. In other words, a PUSCH can be transmitted using the same frequency resource in multiple slots containing SBFD symbols. Frequency hopping can be applied to the PUSCH with DMRS bundling applied. In other words, frequency hopping can be applied in units of multiple slots containing SBFD symbols.

[0267] In step S1805, the terminal may transmit PUSCH in non-SBFD symbols. In non-SBFD symbols, DMRS bundling may be applied to the PUSCH signal. For example, DMRS bundling may be applied by bundling non-SBFD symbols and SBFD symbols. As another example, DMRS bundling may be applied to non-SBFD symbols and SBFD symbols respectively. As yet another example, in the case of configuration #1, uplink transmission may not be performed in non-SBFD symbols. In other words, step S1805 may be omitted. Frequency hopping may be applied to the PUSCH signal with DMRS bundling applied.

[0268] In step S1807, the terminal performs frequency hopping and transmits PUSCH. In other words, the terminal may transmit the PUSCH transmitted in step S1803 or S1805 by changing the frequency resource. The frequency resource used in step S1807 may be a resource separated from the frequency resource of step S1803 or S1805 by a resource offset. In other words, the frequency resource used in step S1807 may be a resource having an index higher than the frequency resource of step S1803 or S1805 by a resource offset. Frequency hopping may be performed based on at least one of a frequency hopping interval or a number of signal repetitions. The frequency hopping interval may be a value common to non-SBFD symbols and SBFD symbols, or a value configured for each non-SBFD symbol and SBFD symbol.

[0269] In the procedure of FIG. 18, information related to DMRS bundling and parameters related to frequency hopping can be configured for each SBFD symbol and non-SBFD symbol. In other words, SBFD symbols and non-SBFD symbols may have different information related to DMRS bundling and parameters related to frequency hopping. Alternatively, information related to DMRS bundling and parameters related to frequency hopping that are common to SBFD symbols and non-SBFD symbols may be configured. In other words, SBFD symbols and non-SBFD symbols may have the same information related to DMRS bundling and parameters related to frequency hopping.

[0270] Hereinafter, a detailed embodiment for performing the procedure illustrated in FIG. 18 is described. For convenience of explanation, the embodiment for performing the procedure illustrated in FIG. 18 may be referred to as the first embodiment.

[0271] First Embodiment: Frequency hopping method for a PUSCH configured with DMRS bundling

[0272] Example 1-1: Frequency hopping method for a PUSCH configured with SBFD configuration #1

[0273] In the case of a PUSCH configured with SBFD configuration #1, the valid symbol type can be determined to be an SBFD symbol or a non-SBFD symbol. Accordingly, if repeated PUSCH transmissions occur across SBFD symbols and non-SBFD symbols, the terminal can determine that only the occasions existing in the symbol type configured with the valid symbol type are valid. The terminal can perform transmissions for the PUSCH on those occasions, i.e., valid occasions.

[0274] In one embodiment of the present invention, for SBFD configuration #1, for in-slot frequency hopping for a PUSCH configured with DMRS bundling, slot n for the PUSCH transmitted in the SBFD symbol. μ s The starting RB of the hop at can be determined as shown in Equation 4.

[0275] [Mathematical Formula 4]

[0276] RB start (n μ s )=RB start , ㄴ n μ s / N FH 」mod2=0

[0277] RB start (n μ s )=RB UL SB start + (RB start -RB UL SB start +RB offset )modN size UL SB , ㄴ n μ s / N FH 」mod2=1

[0278] In mathematical equation 4, RB UL SB start is the starting PRB index of UL available PRBs based on the start of the UL-activated BWP, N sizeUL SB is the number of UL-usable PRBs, RB start is the starting PRB index of the first PUSCH hop based on the start of the UL-activated BWP, RB offset represents the frequency hopping offset for PUSCH in SBFD symbols.

[0279] According to one embodiment of the present invention, slot n determining the frequency hopping position of PUSCH μ s can be determined by the current slot index within the SFN (subframe number). Accordingly, PUSCH frequency hopping is determined by the slot index and the frequency hopping interval (N) based on DMRS bundling. FH It can be controlled based on ).

[0280] According to another embodiment of the present invention, slot n determining the frequency hopping position of PUSCH μ s can be determined by the “valid slot” index within the SFN. Here, a valid slot may refer to a slot among all slots where all symbols within the slot consist of SBFD. That is, the terminal sequentially assigns an index only to slots composed of SBFD symbols within the SFN, and based on this, N FH Frequency hopping for PUSCH can be controlled at intervals.

[0281] FIG. 19 illustrates an example in which frequency hopping is determined based on effective slots. Referring to FIG. 19, n is applied only to the slots within the SFN that consist of SBFD symbols. μ s Indices are assigned sequentially, and based on this, inter-slot frequency hopping for PUSCH operates. As shown in Fig. 19, N FHWhen configured as =3, frequency hopping for PUSCH occurs every 3 slots based on the effective slots. Accordingly, PUSCHs transmitted from the first 5 slots are all DMRS bundled and can be transmitted continuously at the same frequency location, and PUSCHs transmitted from the second 5 slots can be transmitted continuously at the hopped frequency location. As a result, the performance improvement effect due to DMRS bundling can be maximized.

[0282] Example 1-2: Frequency hopping method for PUSCH configured with SBFD configuration #2

[0283] In the case of a PUSCH configured with SBFD configuration #2, all PUSCHs assigned to SBFD symbols or non-SBFD symbols are determined to be valid and can be transmitted regardless of the symbol type. Accordingly, when repeated PUSCH transmissions occur across slots configured with SBFD symbols and slots configured with non-SBFD symbols, a method is required to determine inter-slot frequency hopping at each PUSCH transmission occasion.

[0284] In one embodiment of the present invention, for SBFD configuration #2, for inter-slot frequency hopping for a PUSCH configured with DMRS bundling, the frequency axis resource allocation and frequency hopping offset of a PUSCH transmitted in an SBFD symbol and the frequency axis resource allocation and frequency hopping offset of a PUSCH transmitted in a non-SBFD symbol can be aligned identically. This enables DMRS bundling between a PUSCH transmitted in an SBFD symbol and a PUSCH transmitted in a non-SBFD symbol, thereby maximizing the effect of DMRS bundling.

[0285] FIG. 20 illustrates an example of inter-slot frequency hopping for a PUSCH in which the same DMRS bundling is configured for SBFD symbols and non-SBFD symbols according to an embodiment of the present invention. In FIG. 20, the frequency hopping interval N FH= 5 and number of PUSCH repeated transmissions N rep = 8 is assumed. Referring to Fig. 20, for a PUSCH following SBFD configuration #2, repeated transmissions of the PUSCH may occur across SBFD symbols and non-SBFD symbols. Additionally, based on the DMRS bundling configuration, frequency hopping for the PUSCH may occur every NFH=5 slots, which is the frequency hopping interval configuration value. Here, if the PUSCHs transmitted in SBFD symbols and the PUSCHs transmitted in non-SBFD symbols have the same starting RB value and frequency offset value, the effect of DMRS bundling can be maximized. In Fig. 20, in the even-numbered frequency hopping slots, RB start PUSCH is transmitted at the position. In the odd-numbered frequency hopping slots, RB start A PUSCH is transmitted at a location where a frequency hopping offset is applied. In this case, each frequency hopping slot may include both slots composed of SBFD symbols and slots composed of non-SBFD symbols. Accordingly, when a PUSCH repeat transmission is transmitted across SBFD symbols and non-SBFD symbols, DMRS bundling can be applied between PUSCHs transmitted in two different symbol types. As a result, DMRS bundling in different symbol types can be guaranteed, and the performance improvement effect can be maximized.

[0286] For SBFD configuration #2, the following frequency hopping methods may be considered for inter-slot frequency hopping for PUSCH configured with DMRS bundling.

[0287] Method #1: RB in SBFD and non-SBFD start and RB offset Consider it the same

[0288] For SBFD Configuration #2, for inter-slot frequency hopping for PUSCHs configured with DMRS bundling, slot n for PUSCHs transmitted in SBFD symbols and PUSCHs transmitted in non-SBFD symbols. μ s The starting RB of the hop at can be determined as in Equation 5.

[0289] [Mathematical Formula 5]

[0290] RB start (n μ s )=RB start , ㄴ n μ s / N FH 」mod2=0

[0291] RB start (n μ s )=(RB start +RB offset )modN size UL SB , ㄴ n μ s / N FH 」mod2=1

[0292] In mathematical equation 5, n μ s is the current slot number within the system radio frame, N size UL SB represents the number of UL-usable PRBs.

[0293] In mathematical equation 5, RB start It can be determined by at least one of the following descriptions.

[0294] - RB start may be the starting PRB index of the first PUSCH hop relative to the start of the UL-activated BWP. Here, the terminal is RB start We expect this to always be in the UL-available PRB.

[0295] - RB startmay be a starting PRB index based on the UL-enabled BWP start point after the RB offset between the non-SBFD symbol and the SBFD symbol has been applied.

[0296] In mathematical equation 5, RB offset It can be determined by at least one of the following descriptions.

[0297] - RB offset can be the frequency hopping offset for PUSCH in SBFD symbols.

[0298] - RB offset can be a frequency hopping offset for PUSCH in non-SBFD symbols.

[0299] - RB offset can be a frequency hopping offset for PUSCH. Here, the terminal is RB for SBFD and non-SBFD. offset I do not expect the values ​​to consist of different values.

[0300] - RB offset can be the frequency hopping offset for PUSCH in SBFD symbols. If, RB for the SBFD symbol offset If this is not configured, RB for non-SBFD symbols offset The value is RB for the SBFD symbol. offset It can be considered a value. In other words, RB for non-SBFD symbols offset The value is RB for the SBFD symbol. offset It can be applied as a value instead.

[0301] Method #2: Frequency hopping in non-SBFD is considered identical to frequency hopping in SBFD

[0302] For SBFD Configuration #2, for inter-slot frequency hopping for PUSCHs configured with DMRS bundling, slot n for PUSCHs transmitted in SBFD symbols and PUSCHs transmitted in non-SBFD symbols. μ sThe starting RB of the hop at can be determined as shown in Equation 6.

[0303] [Mathematical Formula 6]

[0304] RB start (n μ s )=RB start , ㄴ n μ s / N FH 」mod2=0

[0305] RB start (n μ s )=RB UL SB start + (RB start -RB UL SB start +RB offset )modN size UL SB , ㄴ n μ s / N FH 」mod2=1

[0306] In mathematical equation 6, n μ s is the current slot number within the system radio frame, RB UL SB start is the starting PRB index of UL available PRBs based on the start of the UL-activated BWP, N size UL SB , is the number of UL-available PRBs, RB offset represents the frequency hopping offset for PUSCH in the SBFD symbols. If Configuration #2 is configured, RB start represents the starting PRB index based on the UL-enabled BWP start point after the RB offset between the non-SBFD symbol and the SBFD symbol has been applied.

[0307] Method #3: Frequency hopping in SBFD is considered identical to frequency hopping in non-SBFD

[0308] For SBFD Configuration #2, for inter-slot frequency hopping for a PUSCH configured with DMRS bundling, slot n for the PUSCH transmitted in the SBFD symbol and the PUSCH transmitted in the SBFD symbol μ s The starting RB of the hop at can be determined as in Equation 7.

[0309] [Mathematical Formula 7]

[0310] RB start (n μ s )=RB start , ㄴ n μ s / N FH 」mod2=0

[0311] RB start (n μ s )=(RB start +RB offset )modN size BWP , ㄴ n μ s / N FH 」mod2=1

[0312] In mathematical equation 7, n μ s is the current slot number within the system radio frame, N FH is the value of the upper-level parameter pusch-FrequencyHopping-Interval, RB start is the starting PRB index within UL BWP, RB offset represents the frequency hopping offset for PUSCH in non-SBFD symbols. Here, RB start It can be calculated from resource block allocation information of resource allocation type 1. Here, the terminal expects that the frequency resource allocation for PUSCH in the SBFD symbol will always exist in the UL available PRB.

[0313] In another embodiment of the present invention, for SBFD configuration #2, for inter-slot frequency hopping for PUSCHs configured with DMRS bundling, frequency hopping for PUSCHs transmitted in SBFD symbols and frequency hopping for PUSCHs transmitted in non-SBFD symbols may be performed independently. Here, in order for DMRS bundling for PUSCH transmissions in each symbol type to be effectively performed, slot n determining the frequency hopping location of the PUSCH μ s, SB The index of can be determined independently for each symbol type within the SFN. For example, n μ s, NSB can be defined as an index for slots composed of SBFD symbols among the slots within the SFN, and n μ s, NSB It can be defined as an index for slots within the SFN that consist of non-SBFD symbols. For each symbol type, PUSCH frequency hopping considering DMRS bundling can be performed independently.

[0314] FIG. 21 illustrates an example of inter-slot frequency hopping for a PUSCH in which DMRS bundling is configured for SBFD symbols and non-SBFD symbols, respectively, according to an embodiment of the present invention. Referring to FIG. 21, the number of PUSCH repeated transmissions N rep = 10 times, frequency hopping interval N for SBFD FH,SB =3 and frequency hopping interval N for non-SBFD FH,NSB =2 is assumed. In the example of Fig. 21, n only for slots consisting of SBFD symbols within the SFN. μ s, SB Indexes are assigned sequentially, and only for slots consisting of non-SBFD symbols, n μ s, NSB Indices can be assigned sequentially. Also, the frequency hopping interval N in the SBFD symbol FH,SBand the frequency hopping interval N in non-SBFD symbols FH,NSB This can be configured separately. Based on this, the operation of inter-slot frequency hopping for PUSCH is controlled in SBFD symbols and non-SBFD symbols, respectively. As shown in the example in Fig. 21, N in a slot configured with SBFD FH,SB When configured as =3, frequency hopping for PUSCH occurs every 3 slots relative to the SBFD slot. Similarly, in the slot configured as non-SBFD, N FH,SB When configured as =2, frequency hopping for PUSCH is performed every 2 slots based on slots configured as non-SBFD. Accordingly, DMRS bundling in each symbol type can be guaranteed, and the performance improvement effect can be maximized.

[0315] For the aforementioned operation, in the case of SBFD configuration #2, the following frequency hopping methods may be considered for inter-slot frequency hopping for the PUSCH configured with DMRS bundling.

[0316] [Method #1]

[0317] For SBFD Configuration #2, for inter-slot frequency hopping for PUSCHs configured with DMRS bundling, slot n for PUSCHs transmitted in non-SBFD symbols. μ s The starting RB of the hop at can be determined as in Equation 8.

[0318] [Mathematical Formula 8]

[0319] RB start (n μ s )=RB start , ㄴ n μ s / N FH 」mod2=0

[0320] RB start (n μ s )=(RB start +RB offset )modN sizeBWP , ㄴ n μ s / N FH 」mod2=1

[0321] In mathematical equation 8, n μ s is n μ s, NSB It means, and n μ s, NSB is the current non-SBFD slot number within the system radio frame, N FH is the value of the upper-level parameter pusch-FrequencyHopping-Interval, RB start is the starting PRB index within UL BWP, RB offset represents the frequency hopping offset for PUSCH in non-SBFD symbols. Here, RB start It can be calculated from resource block allocation information of resource allocation type 1.

[0322] For SBFD Configuration #2, for inter-slot frequency hopping for a PUSCH configured with DMRS bundling, slot n for the PUSCH transmitted in the SBFD symbol. μ s The starting RB of the hop at can be determined as in Equation 9.

[0323] [Mathematical Formula 9]

[0324] RB start (n μ s )=RB start , ㄴ n μ s / N FH 」mod2=0

[0325] RB start (n μ s )=RB UL SB start +(RB start -RB UL SB start +RB offset )modN size UL SB , ㄴ n μ s / N FH」mod2=1

[0326] In mathematical equation 9, n μ s is n μ s, SB It means, and n μ s, SB is the current SBFD slot number within the system radio frame, RB UL SB start is the starting PRB index of UL available PRBs based on the start of the UL-activated BWP, N size UL SB is the number of UL-usable PRBs, RB offset represents the frequency hopping offset for PUSCH in the SBFD symbols. If Configuration #2 is configured, RB start represents the starting PRB index based on the UL-enabled BWP start point after the RB offset between the non-SBFD symbol and the SBFD symbol has been applied.

[0327] In one embodiment of the present invention, RRC parameters for DMRS bundling for PUSCH may be configured separately for SBFD and non-SBFD, respectively. For example, at least one of the RRC parameters in Table 8 may be configured separately for SBFD and non-SBFD, respectively. The terminal may control DMRS bundling and PUSCH transmission operations based on the RRC parameters configured for the corresponding symbol type according to the symbol type of each PUSCH transmission occasion.

[0328] DMRS-BundlingPUSCH-Config information element-- ASN1START-- TAG-DMRS-BUNDLINGPUSCH-CONFIG-STARTDMRS-BundlingPUSCH-Config-r17 ::= SEQUENCE {pusch-DMRS-Bundling-r17 ENUMERATED {enabled} OPTIONAL, -- Need Rpusch-TimeDomainWindowLength-r17 INTEGER (2..32) OPTIONAL, -- Need Spusch-WindowRestart-r17 ENUMERATED {enabled} OPTIONAL, -- Need Rpusch-FrequencyHoppingInterval-r17 ENUMERATED {s2, s4, s5, s6, s8, s10, s12, s14, s16, s20} OPTIONAL, -- Need S...}-- TAG-DMRS-BUNDLINGPUSCH-CONFIG-STOP-- ASN1STOP

[0329] According to one embodiment of the present invention, additional RRC parameter values ​​may be introduced for effective DMRS bundling operation for PUSCH in SBFD. For example, regarding parameter values ​​related to the frequency hopping interval for PUSCH when DMRS bundling is applied (e.g., pusch-FrequencyHoppingInterval), at least one value among values ​​such as s3, s7, s9, s13, s15, s17, s18, s19, etc. may be newly introduced.

[0330] According to one embodiment of the present invention, constraints on RRC parameter values ​​that can be configured for effective DMRS bundling operation for PUSCH in SBFD may not be applied. For example, in the case of PUSCH in non-SBFD, s6, s8, s12, and s14 cannot be configured for the pusch-FrequencyHoppingInterval parameter, but in the case of PUSCH in SBFD, s6, s8, s12, and s14 values ​​can be configured for the pusch-FrequencyHoppingInterval parameter.

[0331] FIG. 22 illustrates a PUCCH transmission procedure based on frequency hopping according to one embodiment of the present disclosure. The procedure of FIG. 22 may be performed by a terminal. In the procedure of FIG. 22, signal transmission through PUCCH, signal transmission through PUCCH resources, and signal transmission using PUCCH resources may be referred to as PUCCH transmission. In other words, a signal transmitted through PUCCH may be referred to as PUCCH or PUCCH signal.

[0332] Referring to FIG. 22, in step S2201, the terminal obtains information related to DMRS bundling and parameters related to frequency hopping. The information related to DMRS bundling may include at least one of whether DMRS bundling is applied or the frequency hopping interval when DMRS bundling is applied.

[0333] In step S2203, the terminal transmits a PUCCH with DMRS bundling applied to SBFD symbols. In other words, a PUCCH can be transmitted using the same frequency resource in multiple slots containing SBFD symbols. Frequency hopping can be applied to the PUCCH with DMRS bundling applied. In other words, frequency hopping can be applied in units of multiple slots containing SBFD symbols.

[0334] In step S2205, the terminal may transmit a PUCCH in non-SBFD symbols. In non-SBFD symbols, DMRS bundling may be applied to the PUCCH signal. For example, DMRS bundling may be applied by bundling non-SBFD symbols and SBFD symbols. As another example, DMRS bundling may be applied to non-SBFD symbols and SBFD symbols respectively. As yet another example, in the case of configuration #1, uplink transmission may not be performed in non-SBFD symbols. In other words, step S2205 may be omitted. Frequency hopping may be applied to the PUCCH signal with DMRS bundling applied.

[0335] In step S2207, the terminal performs frequency hopping and transmits a PUCCH. In other words, the terminal may transmit the PUCCH transmitted in step S2203 or S2205 by changing the frequency resources. The frequency resources used in step S2207 may include resources indicated by configuration information. For example, the frequency resources used in step S2207 may include resources indicated by the secondHopPRB parameter. Frequency hopping may be performed based on at least one of a frequency hopping interval or a number of signal repetitions. The frequency hopping interval may be a value common to non-SBFD symbols and SBFD symbols, or a value configured for each non-SBFD symbol and SBFD symbol.

[0336] In the procedure of FIG. 22, information related to DMRS bundling and parameters related to frequency hopping can be configured for each SBFD symbol and non-SBFD symbol. In other words, SBFD symbols and non-SBFD symbols may have different information related to DMRS bundling and parameters related to frequency hopping. Alternatively, information related to DMRS bundling and parameters related to frequency hopping that are common to SBFD symbols and non-SBFD symbols may be configured. In other words, SBFD symbols and non-SBFD symbols may have the same information related to DMRS bundling and parameters related to frequency hopping.

[0337] Hereinafter, a detailed embodiment for performing the procedure illustrated in FIG. 22 is described. For convenience of explanation, the embodiment for performing the procedure illustrated in FIG. 22 may be referred to as a second embodiment.

[0338] Second Embodiment: Frequency Hopping Method for a PUCCH Configured with DMRS Bundling

[0339] Frequency Hopping (FH) functionality for PUCCH is supported in systems operating with SBFD. For frequency hopping operations on PUCCH, configurations for frequency hopping in SBFD symbols and non-SBFD symbols can be provided separately. Specifically, within the same PUCCH-Resource configuration, the startingPRB and secondHopPRB parameters for frequency hopping can be configured separately for SBFD symbols and non-SBFD symbols, respectively. In the case of a PUCCH configured with SBFD Configuration #2, all PUCCHs assigned to either SBFD symbols or non-SBFD symbols are determined to be valid and can be transmitted regardless of the symbol type. Accordingly, if repeated PUCCH transmissions occur across slots composed of SBFD symbols and slots composed of non-SBFD symbols, a method is required to determine frequency hopping between slots at each PUCCH transmission occasion.

[0340] [Method #1]

[0341] In one embodiment of the present invention, for SBFD configuration #2, for inter-slot frequency hopping for a PUCCH configured with DMRS bundling, the startingRB value and secondHopPRB value of the PUCCH transmitted in the SBFD symbol can be aligned identically with the startingRB value and secondHopPRB value of the PUCCH transmitted in the non-SBFD symbol, respectively. By doing so, DMRS bundling between the PUCCH transmitted in the SBFD symbol and the PUCCH transmitted in the non-SBFD symbol can be enabled, thereby maximizing the effect of DMRS bundling.

[0342] FIG. 23 illustrates an example of inter-slot frequency hopping for a PUCCH in which the same DMRS bundling is configured for SBFD symbols and non-SBFD symbols according to one embodiment of the present disclosure. In FIG. 23, the frequency hopping interval N interval=4, number of PUCCH repeated transmissions N rep = 8 is assumed. Referring to Fig. 23, for a PUCCH following SBFD configuration #2, repeated transmissions for the PUSCH may occur across SBFD symbols and non-SBFD symbols, and N, which is the frequency hopping interval configuration value based on the DMRS bundling configuration, interval Frequency hopping for PUCCH can be performed every 4 slots. In this case, if PUCCHs transmitted from SBFD symbols and PUCCHs transmitted from non-SBFD symbols are assumed to have the same startingRB and secondHopPRB values, the effect of DMRS bundling can be maximized. In Fig. 23, regardless of the symbol type, PUCCH is transmitted at the startingRB position in even-numbered frequency hopping slots, and PUCCH is transmitted at the secondHopPRB position where the frequency hopping offset is applied in odd-numbered frequency hopping slots. Here, each frequency hopping slot may include both slots composed of SBFD symbols and slots composed of non-SBFD symbols. Accordingly, when PUCCH repeated transmissions are transmitted across SBFD symbols and non-SBFD symbols, DMRS bundling can be applied between PUCCHs transmitted from two different symbol types. In other words, DMRS bundling in different symbol types can be guaranteed, and the performance improvement effect can be maximized.

[0343] For SBFD configuration #2, for inter-slot frequency hopping for a PUCCH configured with DMRS bundling, the startingPRB and secondPRB values ​​for each symbol type can be determined based on at least one of the following methods.

[0344] - For PUCCH transmission in SBFD, the startingPRB and secondPRB parameter values ​​can be considered as the startingPRB and secondPRB values ​​configured in non-SBFD.

[0345] - For PUCCH transmission in non-SBFD, the startingPRB and secondPRB parameter values ​​can be considered as the startingPRB and secondPRB values ​​configured in SBFD.

[0346] - For PUCCH transmission in SBFD, if the startingPRB and secondPRB parameter values ​​are not configured, they can be assumed to be the startingPRB and secondPRB values ​​configured in non-SBFD.

[0347] The terminal starts from the first slot designated for PUCCH transmission N rep Consecutive N up to the slot interval Frequency hopping for PUCCH can be performed for each slot. The index of the first transmission interval can start at 0 and increase sequentially. In even transmission intervals, PUCCH can be transmitted at the position corresponding to startingPRB. In odd transmission intervals, PUCCH can be transmitted at the position corresponding to secondHopPRB.

[0348] [Method #2]

[0349] In one embodiment of the present invention, for SBFD configuration #2, for inter-slot frequency hopping for a PUCCH configured with DMRS bundling, the startingRB value and secondHopPRB value of the PUCCH transmitted in the SBFD symbol and the startingRB value and secondHopPRB value of the PUCCH transmitted in the non-SBFD symbol may be applied separately. Through this, DMRS bundling operations between the PUCCH transmitted in the SBFD symbol and the PUCCH transmitted in the non-SBFD symbol can be performed separately.

[0350] FIG. 24 illustrates an example of inter-slot frequency hopping in a PUCCH configured with DMRS bundling according to an embodiment of the present invention, in which SBFD symbols and non-SBFD symbols have the same hopping interval. In the example of FIG. 24, the frequency hopping interval N interval =4, number of PUCCH repeated transmissions N rep = 8 is assumed. Referring to Fig. 24, for a PUCCH following SBFD configuration #2, repeated transmissions for the PUSCH may occur across SBFD symbols and non-SBFD symbols, and N, which is the frequency hopping interval configuration value based on the DMRS bundling configuration, interval Frequency hopping for PUCCH can be performed every 4 slots. In this case, frequency hopping can be performed for PUCCHs transmitted in SBFD symbols and PUCCHs transmitted in non-SBFD symbols based on separately configured startingRB and secondHopPRB values, respectively. That is, for PUCCHs transmitted in SBFD symbols, the startingPRB configured in SBFD SB w secondHopPRB SB Frequency hopping can be performed based on, and PUCCH transmitted in non-SBFD symbols is the startingPRB configured in SBFD NSB w secondHopPRB NSB Frequency hopping can be performed based on.

[0351] For the above operation, the terminal N from the first slot indicated for PUCCH transmission rep Consecutive N up to the slot interval Frequency hopping for PUCCH can be performed for each symbol type within a slot. The index of the first transmission interval starts at 0 and can be incremented sequentially. For PUCCH transmitted from SBFD symbols within even-numbered transmission intervals, startingPRB SBA PUCCH can be transmitted at the position corresponding to . For a PUCCH transmitted in an SBFD symbol within an odd-numbered transmission interval, secondHopPRB SB A PUCCH can be transmitted at the corresponding position. For a PUCCH transmitted from a non-SBFD symbol within an even-numbered transmission interval, startingPRB NSB A PUCCH can be transmitted at the position corresponding to . For a PUCCH transmitted in an SBFD symbol within an odd-numbered transmission interval, secondHopPRB NSB PUCCH can be transmitted at the location corresponding to.

[0352] [Method #3]

[0353] In one embodiment of the present invention, for SBFD configuration #2, for inter-slot frequency hopping for a PUCCH configured with DMRS bundling, the startingRB and secondHopPRB values ​​of the PUCCH transmitted in the SBFD symbol and the startingRB and secondHopPRB values ​​of the PUCCH transmitted in the non-SBFD symbol may be applied separately. Through this, DMRS bundling operations between the PUCCH transmitted in the SBFD symbol and the PUCCH transmitted in the non-SBFD symbol can be performed separately. Here, RRC parameters for DMRS bundling, e.g., N interval Values ​​can be configured separately for SBFD and non-SBFD, respectively.

[0354] FIG. 25 illustrates an example of inter-slot frequency hopping for SBFD symbols and non-SBFD symbols having different hopping intervals in a PUCCH configured with DMRS bundling according to an embodiment of the present invention. In the example of FIG. 25, the frequency hopping interval N for SBFD intervalSB =3, frequency hopping interval N for non-SBFD intervalNSB =2, number of PUCCH repeated transmissions N rep= 10 is assumed. Referring to Fig. 25, DMRS bundling can be performed independently on SBFD symbols and non-SBFD symbols. In this case, for the PUCCHs transmitted in SBFD symbols and the PUCCHs transmitted in non-SBFD symbols, N configured separately for each interval Frequency hopping can be performed based on the values ​​of , startingRB, and secondHopPRB, etc. That is, the PUCCH transmitted in the SBFD symbol is N configured in the SBFD. intervalSB , startingPRB SB w secondHopPRB SB Frequency hopping can be performed based on, and PUCCH transmitted in non-SBFD symbols is N configured in SBFD intervalNSB , startingPRB NSB w secondHopPRB NSB Frequency hopping can be performed based on.

[0355] According to one embodiment of the present invention, RRC parameters for DMRS bundling for PUCCH may be configured separately for SBFD and non-SBFD, respectively. For example, at least one of the RRC parameters in Table 9 may be configured separately for SBFD and non-SBFD, respectively. The terminal may control DMRS bundling and PUCCH transmission operations based on the RRC parameters configured for the corresponding symbol type according to the symbol type of each PUCCH transmission occasion.

[0356] In one embodiment of the present invention, additional RRC parameter values ​​may be introduced for effective DMRS bundling operation for PUCCH in SBFD. For example, regarding parameter values ​​related to the frequency hopping interval for PUCCH when DMRS bundling is applied, at least one or more values ​​among values ​​such as s3, s6, s7, s8, s9 may be newly introduced.

[0357] DMRS-BundlingPUCCH-Config information element-- ASN1START-- TAG-DMRS-BUNDLINGPUCCH-CONFIG-STARTDMRS-BundlingPUCCH-Config-r17 ::= SEQUENCE {pucch-DMRS-Bundling-r17 ENUMERATED {enabled} OPTIONAL, -- Need Rpucch-TimeDomainWindowLength-r17 INTEGER (2..8) OPTIONAL, -- Need Spucch-WindowRestart-r17 ENUMERATED {enabled} OPTIONAL, -- Need Rpucch-FrequencyHoppingInterval-r17 ENUMERATED {s2, s4, s5, s10} OPTIONAL, -- Need S...}-- TAG-DMRS-BUNDLINGPUCCH-CONFIG-STOP-- ASN1STOP

[0358] Below, examples of events in which power consistency and phase continuity are not maintained in DMRS bundling are described. The following examples may be performed in conjunction with the aforementioned procedures or methods. For example, if the following events occur while the procedures of the first embodiment are being performed, power consistency and phase continuity may not be maintained.

[0359] Third Embodiment: Events in which power consistency and phase continuity are not maintained

[0360] When a transmission is performed on a PUSCH or PUCCH configured with DMRS bundling, the terminal must maintain power consistency and phase continuity for multiple uplink transmissions identically within a specific time interval (e.g., nominal TDW).

[0361] According to one embodiment of the present invention, an SBFD terminal may not maintain power consistency and phase continuity for uplink transmissions in certain events. Specifically, the following events may be considered.

[0362] For PUSCH transmission and PUCCH transmission within the Nominal TDW, the terminal may not maintain power consistency and phase continuity in the following cases.

[0363] Event #1) For any two consecutively transmitted PUSCH / PUCCH, if the PUSCH / PUCCH transmissions occurred in different symbol types

[0364] - The above Event #1 refers to a situation where power consistency and phase continuity for DMRS bundling cannot be maintained when consecutive PUSCH / PUCCH transmissions occur in different symbol types. According to one embodiment, depending on the terminal implementation, the terminal's capability, or the terminal's type, the terminal may require additional processing time when performing a change to the symbol type; consequently, it may be impossible to maintain power consistency and phase continuity between different symbol types. According to another embodiment, beam characteristics may differ for PUSCH / PUCCH transmitted in different symbol types, and consequently, it may be impossible to maintain power consistency and phase continuity between different symbol types.

[0365] Event #2) For PUSCH transmissions sent in multiple slots, if a specific PUSCH transmission is cancelled due to an invalid symbol type or an SBFD-specific collision issue

[0366] Event #3) For PUSCH transmissions sent in multiple slots, if a specific PUSCH transmission is cancelled due to an invalid symbol type or an SBFD-specific collision issue

[0367] - Events #2 and #3 above indicate a situation where power consistency and phase continuity cannot be maintained if all or part of a consecutive PUSCH / PUCCH transmission is dropped or canceled. For example, in SBFD Configuration #1, during PUSCH / PUCCH transmission, only transmissions existing at a specific occasion may be valid based on valid symbol types, and accordingly, transmissions assigned to invalid symbol types may be skipped. Therefore, power consistency and phase continuity cannot be maintained for transmissions assigned to invalid symbol types. As another example, an SBFD-aware terminal may perform only one of the DL reception and UL transmissions simultaneously scheduled at a specific time and may be controlled based on collision handling operations specifically defined by SBFD. If the terminal experiences a collision with the DL reception regarding a UL transmission scheduled at a specific time and cancels the UL transmission according to the predefined collision handling operations, power consistency and phase continuity cannot be maintained for those transmissions.

[0368] In one embodiment of the present invention, events in which power consistency and phase continuity are not maintained can be determined by the capability reporting of the terminal.

[0369] The operation of the method according to the present disclosure can be implemented as a computer-readable program or code on a computer-readable recording medium. A computer-readable recording medium includes all types of recording devices in which information that can be read by a computer system is stored. Additionally, a computer-readable recording medium may be distributed across networked computer systems, and a computer-readable program or code may be stored and executed in a distributed manner.

[0370] In addition, computer-readable recording media may include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Program instructions may include machine code, such as that generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

[0371] Some aspects of the present disclosure have been described in the context of a device, but may also be described according to a corresponding method, wherein a block or device corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method may also be described according to a corresponding block or item or a feature of a corresponding device. Some or all of the method steps may be performed by (or using) a hardware device, such as, for example, a microprocessor, a programmable computer, or an electronic circuit. In some embodiments, at least one of the most important method steps may be performed by such a device.

[0372] A programmable logic device (e.g., a field-programmable gate array) may be used to perform some or all of the functions of the methods described in this disclosure. A field-programmable gate array may operate with a microprocessor to perform one of the methods described in this disclosure. Generally, it is preferable that the methods be performed by some hardware device.

[0373] Although the present disclosure has been described with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present disclosure without departing from the spirit and scope of the present disclosure as set forth in the following claims.

Claims

1. In a method of operation of a terminal in a wireless communication system, A step of receiving configuration information including parameters related to at least one frequency hopping; A step of obtaining a parameter related to at least one frequency hopping from the above configuration information; and The method includes the step of transmitting an uplink signal based on at least one parameter related to frequency hopping, wherein The above uplink signal is frequency-hopped in at least one of SBFD (subband full-duplex) symbols or non-SBFD symbols, and A method in which the uplink signal is bundled with a Demodulation Reference Signal (DMRS) at least one of the SBFD symbol or the non-SBFD symbol.

2. In Paragraph 1, A method in which parameters related to the above frequency hopping include at least one of a start RB (resource block) indicator, an RB offset, a hopping RB indicator, a frequency hopping interval, or a number of repeated transmissions.

3. In Paragraph 2, A method in which the uplink signal is frequency-hopped by the RB offset from the frequency resource indicated by the start RB indicator.

4. In Paragraph 2, A method in which the uplink signal is frequency-hopped to a frequency resource indicated by the hopping RB indicator.

5. In Paragraph 2, The above uplink signal is frequency-hopped based on the result of moduloing the value obtained by dividing the transmitted slot index by the frequency hopping interval by 2, wherein A method in which a frequency-hopped uplink signal is transmitted from a frequency resource indicated by the result of calculating the sum of the start RB (resource block) indicator and the RB offset by the number of UL available PRBs.

6. In Paragraph 1, The above configuration information further includes information related to the DMRS bundling.

7. In Paragraph 6, The information related to the above DMRS bundling includes a frequency hopping interval, a method.

8. In Paragraph 7, The above frequency hopping interval is configured for SBFD symbols and non-SBFD symbols, respectively, and The above DMRS bundling is a method performed on the SBFD symbol and the non-SBFD symbol, respectively.

9. In Paragraph 1, The above configuration information is configured for the SBFD symbol and the non-SBFD symbol, respectively, in a method.

10. In Paragraph 1, The above configuration information is a method that is commonly configured for the above SBFD symbol and the above non-SBFD symbol.

11. In Paragraph 1, A method in which the uplink signal comprises at least one of a signal transmitted via PUCCH or a signal transmitted via PUSCH.

12. In Paragraph 1, The above at least one parameter related to frequency hopping is configured for the SBFD symbol and the non-SBFD symbol, respectively, and The above frequency hopping interval is common to the SBFD symbol and the non-SBFD symbol, method.

13. In a method of operation of a base station in a wireless communication system, A step of transmitting configuration information including parameters related to at least one frequency hopping; and Based on at least one parameter related to frequency hopping, the method includes the step of receiving an uplink signal, The above uplink signal is frequency-hopped at least one of an SBFD symbol or a non-SBFD symbol, and A method in which the uplink signal is DMRS bundled at least one of the SBFD symbol or the non-SBFD symbol.

14. In Paragraph 13, A method in which parameters related to the above frequency hopping include at least one of a start RB (resource block) indicator, an RB offset, a hopping RB indicator, a frequency hopping interval, or a number of repeated transmissions.

15. In Paragraph 14, A method in which the uplink signal is frequency-hopped by the RB offset from the frequency resource indicated by the start RB indicator.

16. In Paragraph 14, A method in which the uplink signal is frequency-hopped to a frequency resource indicated by the hopping RB indicator.

17. In Paragraph 13, The above configuration information further includes information related to the DMRS bundling, and The information related to the above DMRS bundling includes a frequency hopping interval, a method.

18. In Paragraph 17, The above frequency hopping interval is configured for SBFD symbols and non-SBFD symbols, respectively, and The above DMRS bundling is a method performed on the SBFD symbol and the non-SBFD symbol, respectively.

19. In a terminal of a wireless communication system, At least one transmitter and receiver; At least one processor; and It includes at least one memory connected to the above-mentioned at least one processor to enable operation, and storing instructions that control the terminal to perform operations when executed by the processor. The above operations are, A step of receiving configuration information including parameters related to at least one frequency hopping; A step of obtaining a parameter related to at least one frequency hopping from the above configuration information; and The method includes the step of transmitting an uplink signal based on at least one parameter related to frequency hopping, wherein The above uplink signal is frequency-hopped in at least one of SBFD (subband full-duplex) symbols or non-SBFD symbols, and A terminal in which the uplink signal is DMRS (Demodulation Reference Signal) bundled at least one of the SBFD symbol or the non-SBFD symbol.

20. In a base station of a wireless communication system, At least one transmitter and receiver; At least one processor; and It includes at least one memory connected to the above-mentioned at least one processor to enable operation, and storing instructions that control the terminal to perform operations when executed by the processor. The above operations are, A step of transmitting configuration information including parameters related to at least one frequency hopping; and Based on at least one parameter related to frequency hopping, the method includes the step of receiving an uplink signal, The above uplink signal is frequency-hopped at least one of an SBFD symbol or a non-SBFD symbol, and The above uplink signal is a base station that DMRS bundles at least one of the SBFD symbol or the non-SBFD symbol.

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