Method and device for transmitting and receiving signal for subband full-duplex communication in wireless communication system

Abstract

The purpose of the present disclosure is to perform transmission and / or reception based on subband non-overlapping full-duplex communication in a wireless communication system, and an operation method of a terminal may comprise the steps of: receiving location information of a symbol for at least one SBFD and configuration information including a first SCS value; receiving configuration information for a BWP, the configuration information including a second SCS value; receiving signaling including scheduling information for a PUSCH within the BWP; and transmitting an uplink signal in the PUSCH on the basis of the signaling, wherein the signal includes at least one of a first signal transmitted in a first type of symbol for the SBFD and a second signal transmitted in a second type of symbol other than the symbol for the SBFD, and the signal is generated on the basis of at least one of the first SCS value and the second SCS value.

Description

Method and device for transmitting and receiving signals for subband full-duplex communication in a wireless communication system

[0001] The present disclosure relates to a method and apparatus for transmitting and receiving signals for subband full-duplex communication in a wireless communication system, and more particularly, to a method and apparatus for transmitting and receiving signals for subband full-duplex communication.

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

[0003] Compared to 5G, 6G communication networks can support a wider range of communication services and scenarios. 6G communication networks can meet requirements for ultra-high performance, ultra-high bandwidth, ultra-high space, ultra-high precision, ultra-intelligence, and / or ultra-reliability. 6G communication networks can support diverse and wide frequency bands and be applied to various usage scenarios (e.g., terrestrial communications, non-terrestrial communications, sidelink communications, 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) communicates with terminals by utilizing multiple Transmission Reception Points (TRPs) that are physically separated. mTRP technology can solve the problem of reduced Quality-of-Service (QoS) when terminals located at the cell-edge are far from the base station, and the problem of inter-cell interference from base stations located in different cells. Furthermore, mTPR technology can play a role in providing an additional communication path, 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 for TRP in 5G NR can be defined as a set of L1 / L2 procedures that find or maintain the optimal beam required for transmission / reception of each TRP and UE. In particular, for beam management related to analog beamforming, a transmission configuration index (TCI) has been introduced to configure the UE's reception beam for a specific channel / signal, such as PDSCH / CSI-RS / PDCCH. TCI was introduced to dynamically indicate quasi-colocation (QCL) information through downlink control information (DCI) at the base station.

[0006] On the other hand, recent considerations are being given to cases where both base stations and terminals have more than one panel. If a terminal has multiple panels, channel measurement results for beam management should be reported on a panel-by-panel basis. However, no such method has been proposed yet. Therefore, a method that allows terminals to report channel measurement results on a panel-by-panel basis is required.

[0007] Meanwhile, the technology that serves as the background for the invention is written to promote understanding of the background for the invention, and may include content that is not a prior art already known to a person with ordinary skill in the field to which the technology belongs.

[0008] The present disclosure may provide a method and device for performing communication using at least one of a subband full-duplex (SBFD) symbol and a non-SBFD symbol in a wireless communication system.

[0009] The present disclosure may provide a method and apparatus for configuring at least one of an SBFD symbol and a non-SBFD symbol in a wireless communication system.

[0010] The present disclosure may provide a method and apparatus for configuring a subcarrier spacing (SCS) of at least one of an SBFD symbol and a non-SBFD symbol in a wireless communication system.

[0011] The present disclosure can provide a method and device for performing communication by considering SCS of SBFD symbols and non-SBFD symbols in a wireless communication system.

[0012] The present disclosure may provide a method and device for generating a signal based on an SCS configured in an SBFD symbol in a wireless communication system.

[0013] The present disclosure may provide a method and apparatus for performing communication in SBFD symbols and non-SBFD symbols having different SCSs in a wireless communication system.

[0014] The present disclosure may provide a method and apparatus for determining an SCS of a signal transmitted in an SBFD symbol and a non-SBFD symbol composed of different SCSs in a wireless communication system.

[0015] The present disclosure may provide a method and apparatus for performing scheduling for SBFD symbols and non-SBFD symbols composed of different SCSs in a wireless communication system.

[0016] The technical objectives to be achieved in the present disclosure are not limited to those mentioned above, and other technical tasks not mentioned can be considered by a person having ordinary skill in the technical field to which the technical configuration of the present disclosure is applied from the embodiments of the present disclosure described below.

[0017] According to one embodiment of the present disclosure, a method of operating a terminal in a wireless communication system may include the steps of: receiving configuration information including position information of a symbol for at least one subband full-duplex (SBFD) and a first subcarrier spacing (SCS) value; receiving configuration information for a bandwidth part (BWP) including a second SCS value; receiving signaling including scheduling information for a physical uplink shared channel (PUSCH) within the BWP; and transmitting an uplink signal on the PUSCH based on the signaling. The signal may include at least one of a first signal transmitted in a first type of symbol for the SBFD or a second signal transmitted in a second type of symbol that is not a symbol for the SBFD, and the signal may be generated based on at least one of the first SCS value or the second SCS value.

[0018] According to one embodiment of the present disclosure, a method of operating a base station in a wireless communication system may include the steps of transmitting configuration information including position information of a symbol for at least one SBFD and a first SCS value, transmitting configuration information for a BWP including a second SCS value, transmitting signaling including scheduling information for a PUSCH within the BWP, and receiving an uplink signal on the PUSCH based on the signaling. The signal includes at least one of a first signal transmitted in a first type of symbol for the SBFD or a second signal transmitted in a second type of symbol that is not a symbol for the SBFD, and the signal may be generated based on at least one of the first SCS value or the second SCS value.

[0019] According to one embodiment of the present disclosure, in a wireless communication system, a terminal includes at least one transceiver, at least one processor, and at least one memory operably connected to the at least one processor and storing instructions that, when executed by the processor, control the terminal to perform operations, wherein the operations may include: receiving configuration information including position information of a symbol for at least one SBFD and a first SCS value; receiving configuration information for a BWP including a second SCS value; receiving signaling including scheduling information for a PUSCH within the BWP; and transmitting an uplink signal on the PUSCH based on the signaling. The signal includes at least one of a first signal transmitted in a first type of symbol for the SBFD or a second signal transmitted in a second type of symbol that is not a symbol for the SBFD, and the signal may be generated based on at least one of the first SCS value or the second SCS value.

[0020] According to one embodiment of the present disclosure, in a wireless communication system, a base station includes at least one transceiver, at least one processor, and at least one memory operably connected to the at least one processor and storing instructions that, when executed by the processor, control the terminal to perform operations, wherein the operations may include: transmitting configuration information including position information of a symbol for at least one SBFD and a first SCS value; transmitting configuration information for a BWP including a second SCS value; transmitting signaling including scheduling information for a PUSCH within the BWP; and receiving an uplink signal on the PUSCH based on the signaling. The signal includes at least one of a first signal transmitted in a first type of symbol for the SBFD or a second signal transmitted in a second type of symbol that is not a symbol for the SBFD, and the signal may be generated based on at least one of the first SCS value or the second SCS value.

[0021] The proposed technology effectively controls uplink and / or downlink transmission and / or reception in wireless communication systems, thereby improving cell throughput, reducing delay, enhancing transmission and reception signal reliability, and increasing coverage. Specifically, the proposed technology effectively controls uplink and / or downlink transmissions configured with different numerologies in systems operating in subband full-duplex (SBFD), thereby enhancing system performance.

[0022] The effects that can be obtained from the embodiments of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood by those skilled in the art to which the technical configuration of the present disclosure is applied, from the description of the embodiments of the present disclosure below. In other words, unintended effects resulting from implementing the configuration described in the present disclosure can also be derived from the embodiments of the present disclosure by those skilled in the art.

[0023] FIG. 1 illustrates a communication system according to an embodiment of the present disclosure.

[0024] FIG. 2 illustrates a block diagram of a communication node according to an embodiment of the present disclosure.

[0025] FIG. 3 illustrates a block diagram of a wireless device according to an embodiment of the present disclosure.

[0026] 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.

[0027] FIG. 5 illustrates an example of a system frame in a wireless communication system according to an embodiment of the present disclosure.

[0028] FIG. 6 illustrates an example of a subframe in a wireless communication system according to an embodiment of the present disclosure.

[0029] FIG. 7 illustrates an example of a slot in a wireless communication system according to an embodiment of the present disclosure.

[0030] FIG. 8 illustrates the structure of time-frequency resources in a wireless communication system according to an embodiment of the present disclosure.

[0031] Figure 9 illustrates an example of a slot structure for SBFD (subband full-duplex).

[0032] FIG. 10 illustrates an example of an SBFD configuration in a wireless communication system according to one embodiment of the present disclosure.

[0033] FIG. 11 illustrates an example of a system configuration represented by a combination of a configuration related to SBFD and a configuration related to BWP (bandwidth part) in a wireless communication system according to one embodiment of the present disclosure.

[0034] FIG. 12a illustrates an example of a system configuration represented by a combination of an SBFD configuration and a BWP configuration in a wireless communication system according to one embodiment of the present disclosure, expressed in slot units.

[0035] FIG. 12b illustrates an example of a system configuration represented by a combination of an SBFD configuration and a BWP configuration in a wireless communication system according to one embodiment of the present disclosure, expressed in symbol units.

[0036] FIG. 13 illustrates an example of a procedure for transmitting a signal based on SBFD in a wireless communication system according to one embodiment of the present disclosure.

[0037] FIG. 14 illustrates an example of a procedure for receiving a signal based on SBFD in a wireless communication system according to one embodiment of the present disclosure.

[0038] FIG. 15 illustrates an example of a procedure for transmitting a signal based on different subcarrier spacings (SCS) depending on the type of symbol in a wireless communication system according to one embodiment of the present disclosure.

[0039] FIG. 16 illustrates a procedure for transmitting a signal based on a single SCS common to types of symbols in a wireless communication system according to one embodiment of the present disclosure.

[0040] FIG. 17 illustrates an example of resource scheduling across non-SBFD symbols and SBFD symbols in a wireless communication system according to one embodiment of the present disclosure.

[0041] FIG. 18 illustrates a procedure for interpreting the configuration of SCS values ​​in a wireless communication system according to one embodiment of the present disclosure.

[0042] FIG. 19 illustrates a procedure for performing scheduling by considering the type of symbol in a wireless communication system according to one embodiment of the present disclosure.

[0043] This disclosure may be subject to various modifications and various embodiments. Specific embodiments are illustrated and described in detail in the drawings. However, this is not intended to limit the disclosure to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the disclosure.

[0044] While terms such as "first" and "second" may be used to describe various components, these components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present disclosure, a first component could be referred to as a "second component," and similarly, a second component could also be referred to as a "first component." The term "and / or" may refer to a combination of multiple related items described herein or to any of multiple related items described herein.

[0045] 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 combinations of one or more 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 combinations of one or more of A and B.”

[0046] 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.”

[0047] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0048] The terminology used in this disclosure is only used to describe specific embodiments and is not intended to limit the present disclosure. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this disclosure, it should be understood that the terms "comprises" or "has" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0049] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0050] Hereinafter, preferred embodiments of the present disclosure will be described in more detail with reference to the attached drawings. In order to facilitate an overall understanding in describing the present disclosure, the same reference numerals will be used for identical components in the drawings, and redundant descriptions of identical components will be omitted. In addition to the embodiments explicitly described in the present disclosure, operations may be performed according to combinations of embodiments, extensions of embodiments, and / or modifications of embodiments. The performance of some operations may be omitted, and the order of operation may be changed.

[0051] In an embodiment, even if a method (e.g., transmitting or receiving a signal) performed by a first communication node among communication nodes is described, a corresponding second communication node can perform a method (e.g., receiving or transmitting a signal) corresponding to the method performed by the first communication node. That is, if an operation of a UE (user equipment) is described, a corresponding base station can perform an operation corresponding to the operation of the UE. Conversely, if an operation of a base station is described, a corresponding UE can perform an operation corresponding to the operation of the base station.

[0052] A base station may be referred to as a NodeB, an evolved NodeB, a gNodeB (next generation node B), a gNB, a device, an apparatus, a node, a communication node, a BTS (base transceiver station), a RRH (radio remote head), a TRP (transmission reception point), a RU (radio unit), an RSU (road side unit), a radio transceiver, an access point, an access node, etc. A UE may be referred to as a terminal, a device, an apparatus, a node, a communication node, an end node, an access terminal, a mobile terminal, a station, a subscriber station, a mobile station, a portable subscriber station, an OBU (on-broad unit), etc.

[0053] 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 a transmission and reception operation of system information (e.g., a master information block (MIB), a system information block (SIB)) and / or an RRC message. MAC signaling may refer to a transmission and reception operation of a MAC control element (CE). PHY signaling may refer to a transmission and reception operation of control information (e.g., downlink control information (DCI), uplink control information (UCI), sidelink control information (SCI)).

[0054] In the present disclosure, “an operation (e.g., a transmission operation) is set” may mean that “setting information for the operation (e.g., an information element, a parameter)” and / or “information instructing the performance of the operation” is signaled. “An information element (e.g., a parameter) is set” may mean that the information element is signaled. In the present disclosure, “a signal and / or a channel” may mean a signal, a channel, or “a signal and a channel,” and a signal may be used to mean “a signal and / or a channel.”

[0055] 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 the term "communication system."

[0056] FIG. 1 illustrates a communication system according to an embodiment of the present disclosure.

[0057] 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). In addition, the communication system (100) may further include a core network (e.g., a serving-gateway (S-GW), a packet data network (PDN)-gateway (P-GW), a mobility management entity (MME)). If the communication system (100) is a 5G communication system (e.g., a new radio (NR) system), the core network may include an access and mobility management function (AMF), a user plane function (UPF), a session management function (SMF), etc.

[0058] A plurality of communication nodes (110 to 130) can support a communication protocol specified in the 3rd generation partnership project (3GPP) standard (e.g., LTE communication protocol, LTE-A communication protocol, NR communication protocol, etc.). The plurality of communication nodes (110 to 130) may 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 plurality of communication nodes may have the following structure.

[0059] FIG. 2 illustrates a block diagram of a communication node according to an embodiment of the present disclosure. The structure illustrated in FIG. 2 may be understood as the structure of at least a portion of a communication node, a base station, or a core network entity. FIG. 2 illustrates an example of a wireless device (200). 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.

[0060] Referring to FIG. 2, the wireless device (200) may include at least one control unit (210), at least one memory (220), at least one power supply unit (230), at least one transceiver unit (240), at least one input unit (250), at least one output unit (260), and / or at least one antenna (270).

[0061] The control unit (210) can control the memory (220) and / or the transceiver unit (240), and can be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in the present disclosure. The memory (220) can be connected to the control unit (210) and can store various information related to the operation of the control unit (210). For example, the memory (220) can perform some or all of the controls controlled by the control unit (210), or store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in the present disclosure. The configuration of the memory is not limited in a specific manner. For example, it can be configured as at least one of a read-only memory (ROM) and a random access memory (RAM).

[0062] At least one control unit (210) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. The descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in the present disclosure may be implemented using firmware or software in the form of codes, instructions, and / or a set of instructions. Here, the firmware or software may execute another program stored in a memory (220), such as an OS. The control unit (210) may be implemented to support beamforming or directional routing operations in which signals from at least one antenna (270) are weighted differently to effectively steer signals outgoing in a desired direction.

[0063] Additionally, at least one control unit (210) may be coupled to 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 refer to a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which methods according to embodiments of the present disclosure are performed.

[0064] At least one transceiver (240) may be connected to the control unit (210) and may transmit and / or receive a wireless signal via at least one antenna (270). The transceiver (240) may include a transmitter and / or a receiver. The at least one transceiver (240) may transmit user data, control information, wireless signals / channels, etc. mentioned in the methods and / or operation flowcharts of the present disclosure to at least one other device. For example, the at least one transceiver (240) may be connected to at least one control unit (210) and may transmit and receive wireless signals. In addition, the at least one control unit (210) may control the at least one transceiver (240) to transmit user data, control information, or a wireless signal to at least one other device. The at least one transmitter (240) may receive a signal transmitted by another wireless device from at least one antenna (270). Additionally, at least one transceiver (24) may downconvert or upconvert 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).

[0065] The input unit (250) can obtain information such as user input, video, and audio, and can include various input means such as various mechanical / electronic input means, cameras, and microphones. The output unit (260) is for providing information to users by generating output related to sight, hearing, or touch, and can include a display, a speaker, a vibration module, and the like. The wireless device (200) supplies power through the power supply unit (230), and the power supply unit (230) can include a wired / wireless charging circuit, a battery, and the like.

[0066] 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 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 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 within the cell coverage of the third base station (110-3). The first terminal (130-1) may be within the cell coverage of the fourth base station (120-1). The sixth terminal (130-6) may be within the cell coverage of the fifth base station (120-2).

[0067] Here, each of the plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be referred to as a NodeB (NB), an evolved NodeB (eNB), a gNB, an advanced base station (ABS), a high reliability-base station (HR-BS), a base transceiver station (BTS), a radio base station, a radio transceiver, an access point, an access node, a radio access station (RAS), a mobile multihop relay-base station (MMR-BS), a relay station (RS), an advanced relay station (ARS), a high reliability-relay station (HR-RS), a home NodeB (HNB), a home eNodeB (HeNB), a road side unit (RSU), a radio remote head (RRH), a transmission point (TP), a transmission and reception point (TRP), etc.

[0068] Each of the plurality of terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) may be referred to as a user equipment (UE), terminal equipment (TE), advanced mobile station (AMS), high reliability-mobile station (HR-MS), terminal, access terminal, mobile terminal, station, subscriber station, mobile station, portable subscriber station, node, device, on board unit (OBU), etc.

[0069] Meanwhile, each of the plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) may operate in a different frequency band or may operate in the same frequency band. Each of the plurality of 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 the ideal backhaul link or the non-ideal backhaul link. Each of the plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be connected to the core network via the ideal backhaul link or the non-ideal backhaul link. Each of the plurality of 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.

[0070] Additionally, each of the plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) may support MIMO transmission (e.g., single user (SU)-MIMO, multi user (MU)-MIMO, massive MIMO, etc.), coordinated multipoint (CoMP) transmission, carrier aggregation (CA) transmission, transmission in an unlicensed band, sidelink communication (e.g., device to device communication (D2D), proximity services (ProSe)), Internet of Things (IoT) 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 scheme, and the fourth terminal (130-4) can receive a signal from the second base station (110-2) by the SU-MIMO scheme. Alternatively, the second base station (110-2) can transmit signals 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 signals from the second base station (110-2) based on the MU-MIMO method.

[0071] 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 scheme, 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) based on the CoMP scheme. Each of the plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) can transmit and receive a signal with terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) within its cell coverage based on the CA scheme. 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 under the control of the second base station (110-2) and the third base station (110-3), respectively.

[0072] Meanwhile, a more detailed example of the structure of the control unit (210) and / or the transceiver unit (240) is shown in FIG. 3. FIG. 3 illustrates a block diagram of a wireless device according to an embodiment of the present disclosure. FIG. 3 illustrates the structure of a first wireless device (300a) and a second wireless device (300b) that transmit and / or receive signals. In FIG. 3, each of the first wireless device (300a) and the second wireless device (300b) may be a base station or a UE.

[0073] Referring to FIG. 3, each of the first wireless device (300a) and the second wireless device (300b) may be a base station or a UE. The first wireless device (300a) may transmit a signal to the second wireless device (300b). The 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 the 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).

[0074] The transmitting processor (311) may perform a processing operation on data (e.g., an encoding operation, a symbol mapping operation, etc.) to generate data symbol(s). The transmitting processor (311) may perform a processing operation on control information (e.g., an encoding operation, a symbol mapping operation, etc.) to generate control symbol(s). In addition, the transmitting processor (311) may generate synchronization / reference symbol(s) for a synchronization signal and / or a reference signal.

[0075] The Tx MIMO processor (312) may perform a spatial processing operation (e.g., a precoding operation) on data symbol(s), control symbol(s), and / or synchronization / reference symbol(s). The output (e.g., a symbol stream) of the Tx MIMO processor (312) may be provided to modulators (MODs) included in the transceivers (313a to 313t). The modulators (MODs) may perform a processing operation on the symbol stream to generate modulation symbols, and may perform an additional processing operation (e.g., an analog conversion operation, an amplification operation, a filtering operation, an upconversion operation) on the modulation symbols to generate signals. The signals generated by the modulators (MODs) of the transceivers (313a to 313t) may be transmitted via the antennas (313a to 313t).

[0076] Signals transmitted by the first wireless device (300a) may be received by the antennas (364a to 364r) of the second wireless device (300b). The signals received by the antennas (364a to 364r) may be provided to demodulators (DEMODs) included in the transceivers (363a to 363r). The demodulator (DEMOD) may perform a processing operation (e.g., a filtering operation, an amplification operation, a downconversion operation, a digital conversion operation) on the signal to obtain samples. The demodulator (DEMOD) may perform an additional processing operation on the samples to obtain symbols. The MIMO detector (362) may perform a MIMO detection operation on the symbols. The receiving processor (361) may perform a processing operation (e.g., a deinterleaving operation, a decoding operation) on the symbols. The output of the receiving processor (361) may be provided to a data sink (360) and a controller (366). For example, data may be provided to the data sink (360), and control information may be provided to the controller (366).

[0077] Meanwhile, the second wireless device (300b) can transmit a signal to the first wireless device (300a). The transmitting processor (368) included in the second wireless device (300b) can receive data (e.g., data units) from a data source (367) and perform a processing operation on the data to generate data symbol(s). The transmitting processor (368) can receive control information from the controller (366) and perform a processing operation on the control information to generate control symbol(s). In addition, the transmitting processor (368) can perform a processing operation on a reference signal to generate reference symbol(s).

[0078] The Tx MIMO processor (369) may perform spatial processing operations (e.g., precoding operations) on data symbol(s), control symbol(s), and / or reference symbol(s). The output (e.g., symbol stream) of the Tx MIMO processor (369) may be provided to modulators (MODs) included in the transceivers (363a to 363t). The modulators (MODs) may perform processing operations on the symbol streams to generate modulation symbols, and may perform additional processing operations (e.g., analog conversion operations, amplification operations, filtering operations, upconversion operations) on the modulation symbols to generate signals. The signals generated by the modulators (MODs) of the transceivers (363a to 363t) may be transmitted via the antennas (364a to 364t).

[0079] The signals transmitted by the second wireless device (300b) may be received by the antennas (313a to 313r) of the first wireless device (300a). The signals received by the antennas (313a to 313r) may be provided to the demodulators (DEMODs) included in the transceivers (313a to 313r). The demodulator (DEMOD) may perform a processing operation (e.g., a filtering operation, an amplification operation, a downconversion operation, a digital conversion operation) on the signal to obtain samples. The demodulator (DEMOD) may perform an additional processing operation on the samples to obtain symbols. The MIMO detector (320) may perform a MIMO detection operation on the symbols. The receiving processor (319) may perform a processing operation (e.g., a deinterleaving operation, a decoding operation) on the symbols. The output of the receiving processor (319) may be provided to a data sink (318) and a controller (316). For example, data may be provided to the data sink (318) and control information may be provided to the controller (316).

[0080] Memories (315 and 365) can store data, control information, and / or program code. Scheduler (314) can perform scheduling operations for communication. Processors (311, 312, 319, 361, 368, 369) and controllers (316, 366) illustrated in FIG. 3 may be the processor (210) illustrated in FIG. 2 and may be used to perform the methods described in the present disclosure.

[0081] 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.

[0082] Referring to FIGS. 4A and 4B, a transmission path (410) may be implemented in a communication node that transmits a signal, and a reception path (420) may be implemented in 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 receiving 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 may be a natural number.

[0083] In the transmission path (410), information bits may be input to a channel coding and modulation block (411). The channel coding and modulation block (411) may perform a coding operation (e.g., a low-density parity check (LDPC) coding operation, a polar coding operation, etc.) and a modulation operation (e.g., a quadrature phase shift keying (QPSK), a quadrature amplitude modulation (QAM), etc.) on the information bits. The output of the channel coding and modulation block (411) may be a sequence of modulation symbols.

[0084] The S-to-P block (412) can convert modulation symbols in the frequency domain into parallel symbol streams to generate N parallel symbol streams. N can be an IFFT size or an FFT size. The N IFFT block (413) can perform an IFFT operation on the N parallel symbol streams to generate signals in the time domain. The P-to-S block (413) can convert the output (e.g., parallel signals) of the N IFFT block (413) into a serial signal to generate a serial signal.

[0085] The CP addition block (415) can insert a CP into a 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 at the baseband before up-conversion.

[0086] A signal transmitted from a transmission path (410) may be input to a reception path (420). An operation in the reception path (420) may be the reverse operation of the operation in the transmission path (410). A DC (421) may down-convert the frequency of the received signal to a baseband frequency. A CP removal block (422) may remove a CP from a signal. The output of the CP removal block (422) may be a serial signal. An S-to-P block (423) may convert the serial signal into parallel signals. An N FFT block (424) may perform an FFT algorithm to generate N parallel signals. A P-to-S block (425) may convert the parallel signals into a sequence of modulation symbols. A 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 data.

[0087] In FIGS. 4A and 4B , Discrete Fourier Transform (DFT) and Inverse DFT (IDFT) may be used instead of FFT and IFFT. Each of the blocks (e.g., components) in FIGS. 4A and 4B may be implemented by at least one of hardware, software, or firmware. For example, some of the blocks in FIGS. 4A and 4B 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 , a block may be subdivided into multiple blocks, multiple blocks may be integrated into a single block, some blocks may be omitted, and blocks supporting other functions may be added.

[0088] FIG. 5 illustrates an example of a system frame in a wireless communication system according to an embodiment of the present disclosure.

[0089] Referring to Figure 5, time resources in a communication system can be divided into frame units. 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 (milliseconds). 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 the system frame after system frame #1023 can be #0.

[0090] A system frame may include two half frames. A half frame may be 5 ms long. 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 include 10 subframes. A subframe may be 1 ms long. The 10 subframes within a system frame may be referred to as "subframes #0-9."

[0091] FIG. 6 illustrates an example of a subframe in a wireless communication system according to an embodiment of the present disclosure.

[0092] Referring to Fig. 6, one subframe can include n slots, where n can be a natural number. Therefore, one subframe can be composed of one or more slots.

[0093] FIG. 7 illustrates an example of a slot in a wireless communication system according to an embodiment of the present disclosure.

[0094] Referring to Figure 7, a single slot may include one or more symbols. A single slot illustrated in Figure 7 may include 13 symbols. The length of a slot may vary depending on the number and length of symbols contained in the slot. Alternatively, the length of a slot may vary depending on the numerology.

[0095] In a communication system, the numerology applied to physical signals and channels may be variable. The numerology may be variable to meet various technical requirements of the communication system. In a communication system applying CP (cyclic prefix)-based OFDM waveform technology, the numerology may include subcarrier spacing and CP length (or CP type). Table 1 may be an embodiment of a method for configuring a numerology for a CP-OFDM-based communication system. At least some of the numerologies in Table 1 may be supported depending on the frequency band in which the communication system operates. In addition, the communication system may additionally support numerologies not listed in Table 1.

[0096] Subcarrier spacing 15 kHz 30 kHz 60 kHz 120 kHz 240 kHz 480 kHz OFDM symbol length [㎲] 66.733.316.78.34.22.1 CP length [㎲] 4.762.381.190.600.300.151 Number of OFDM symbols in ms 132856112224448

[0097] When the subcarrier spacing is 15 kHz (e.g., μ=0), the slot length can be 1 ms. In this case, one system frame can contain 10 slots. When the subcarrier spacing is 30 kHz (e.g., μ=1), the slot length can be 0.5 ms. In this case, one system frame can contain 20 slots. When the subcarrier spacing is 60 kHz (e.g., μ=2), the slot length can be 0.25 ms. In this case, one system frame can contain 40 slots. When the subcarrier spacing is 120 kHz (e.g., μ=3), the slot length can be 0.125 ms. In this case, one system frame can contain 80 slots. When the subcarrier spacing is 240 kHz (e.g., μ=4), the slot length can be 0.0625 ms. In this case, one system frame can contain 160 slots.

[0098] This frame structure 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 numerator can be configured as shown in Table 2 below.

[0099] 014101114202214404314808414160165143203261464064

[0100] This frame structure is not limited to a specific method. Therefore, unlike Table 2 above, other numerals can be set or additional numerals can be supported. A symbol can be set as a downlink (DL) symbol, a flexible (FL) symbol, or an uplink (UL) symbol. A slot consisting of only DL symbols can be referred to as a "DL slot," a slot consisting of only FL symbols can be referred to as an "FL slot," and a slot consisting of only UL symbols can be referred to as a "UL slot."

[0101] The slot format can be semi-statically configured by higher layer signaling (e.g., RRC signaling). Information indicating the semi-static slot format can be included in the system information, and the semi-static slot format can be configured cell-specifically. In addition, the semi-static slot format can be additionally configured for each terminal through terminal-specific higher layer signaling (e.g., RRC signaling). The flexible symbol of the cell-specifically configured slot format can be overridden to a downlink symbol or an uplink symbol by terminal-specific higher layer signaling. In addition, the slot format can be dynamically indicated by physical layer signaling (e.g., a slot format indicator (SFI) included in DCI). The semi-statically configured slot format can be overridden by a dynamically indicated slot format. For example, the semi-statically configured flexible symbol can be overridden to a downlink symbol or an uplink symbol by the SFI.

[0102] A terminal may receive a TDD-UL-DL-common configuration based on upper layer signaling. The TDD-UL-DL-common configuration may include a reference SCS configuration μref and at least one slot configuration pattern. The first slot configuration pattern may include at least one of a slot configuration period, the number of slots with only downlink symbols, the number of downlink symbols, the number of slots with only uplink symbols, and the number of uplink symbols.

[0103] A slot configuration period of P msec can be configured to include S slots based on the SCS configuration μref. Among the S slots, the first dslots slots contain only downlink symbols, and the last uslots contain only downlink symbols. In addition, dsym downlink symbols can be included after the first dslots slots, and usym uplink symbols can be included before the last uslots slots. The remaining symbols can be composed of flexible symbols.

[0104] 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 the same types of parameters as the variable values ​​that the first slot configuration pattern may have. If 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.

[0105] Additionally, the terminal can receive an additional TDD-UL-DL-only configuration based on upper-layer signaling. If an additional dedicated configuration is provided, only the variable slots among the slots configured based on the TDD-UL-DL-common configuration can be redefined.

[0106] A terminal that has received slot information from a higher layer can determine a slot format using the following procedure. The terminal can determine a slot format by receiving various lists (e.g., slotFormatCombToAddModList, availableRB-SetsToAddModList, etc.) for a set of serving cells from the higher layer. If a slot format indicator (e.g., SlotFormatIndicator) parameter is configured by the higher layer, the terminal can be provided with an SFI-RNTI and a payload size for DCI format 2_0. In addition, the terminal is provided with a search space set and a configuration for the corresponding CORESET within at least one serving cell, through which it can monitor PDCCH candidates for DCI format 2_0.

[0107] For each serving cell, the UE may receive at least one of the serving cell ID, the SFI-index field position in DCI format 2_0, the slot format combination, and the reference SCS configuration for asymmetric spectrum operation. In addition, the UE may receive at least one of the reference SCS configuration, the position of the available RB set indicator field in DCI, the position of the channel occupancy duration field, and the position of the search space set group switching flag field for non-paired spectrum or paired spectrum operation.

[0108] Here, the SFI-index field value can indicate to the terminal the slot format for each slot of the DL BWP or UL BWP. The SFI-index field can be applied to multiple slots starting from the slot in which the terminal detects DCI format 2_0. The number of slots to which the SFI-index field is applied can be greater than or equal to the PDCCH monitoring period for DCI format 2_0. The PDCCH monitoring period can be shorter than the period of the slot format combination. If the terminal detects more than one DCI format 2_0 for the same slot, it can expect that each format indicates the same slot format.

[0109] The slot format can be indicated in an indexed form, and a slot format with a CP can be defined as shown in Table 3 below. Referring to Table 3, the slot format can be individually determined as one of an uplink slot (U), a downlink slot (D), and a variable slot (F) for each symbol number within the slot, and can be indicated in an indexed form.

[0110] 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

[0111] The format of a slot with an extended CP can be determined based on the format of a slot with a normal CP. If the overlapping normal CP symbols are downlink / uplink / variable symbols, respectively, 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. Furthermore, 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, the terminal can preset rules for receiving or transmitting data in various situations. For example, the terminal can variably process a set of symbols in a slot according to the tdd-UL-DL-common configuration and the tdd-UL-DL-only configuration. If the SFI-index field value in DCI format 2_0 is indicated by a variable symbol set and the UE detects a DCI format that instructs the UE to receive PDSCH or CSI-RS in the corresponding slot, the UE may receive PDSCH or CSI-RS in the corresponding symbol set.

[0112] If some of the symbol sets of a slot are symbols of a CORESET configured for PDCCH monitoring by the terminal, the terminal can receive PDCCH in the CORESET only when the SFI-index field value indicates a downlink symbol.

[0113] If the SFI-index field value indicates the symbol set of the slot as a variable symbol set, and the UE detects a DCI format, RAR UL grant, fallbackRAR UL grant, or successRAR for PUSCH, PUCCH, PRACH, or SRS transmission, the UE can transmit PUSCH, PUCCH, PRACH, or SRS in the corresponding symbol set. Conversely, if the UE does not detect a PUSCH, PUCCH, PRACH, etc., the UE can be configured not to transmit or receive in the symbol set of the corresponding slot.

[0114] When a terminal is set to receive PDSCH or CSI-RS or transmit PUCCH, PUSCH, or PRACH by a higher layer, it can receive or transmit only under conditions corresponding to the SFI-index field value.

[0115] The reference signal may be a channel state information-reference signal (CSI-RS), a sounding reference signal (SRS), a demodulation-reference signal (DM-RS), a phase tracking-reference signal (PT-RS), etc. The channel may be a physical broadcast channel (PBCH), a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a physical sidelink control channel (PSCCH), a physical sidelink shared channel (PSSCH), etc. In the present disclosure, the control channel may mean a PDCCH, a PUCCH, or a PSCCH, and the data channel may mean a PDSCH, a PUSCH, or a PSSCH.

[0116] FIG. 8 illustrates the structure of time-frequency resources in a wireless communication system according to an embodiment of the present disclosure.

[0117] 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)". Resources 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 a basic unit for 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 a basic unit for resource allocation in the time domain.

[0118] In the present disclosure, RB may mean CRB (common RB). Alternatively, RB may mean PRB or VRB (virtual RB). In a communication system, CRB may mean RB that constitutes a set of consecutive RBs (e.g., a common RB grid) based on a reference frequency (e.g., point A). Carriers and / or bandwidth portions may be arranged on the common RB grid. That is, the carrier and / or bandwidth portions may be composed of CRB(s). RBs or CRBs that constitute the bandwidth portions may be referred to as PRBs, and within the bandwidth portions, the CRB index may be appropriately converted to the PRB index.

[0119] Downlink data can be transmitted via the PDSCH. The base station can transmit PDSCH configuration information (e.g., scheduling information) to the terminal via the PDCCH. The terminal can obtain the PDSCH configuration information by receiving the PDCCH (e.g., downlink control information (DCI)). For example, the PDSCH configuration information can include a modulation coding scheme (MCS) used for transmitting and / or receiving the PDSCH, time resource information of the PDSCH, frequency resource information of the PDSCH, feedback resource information for the PDSCH, etc. The PDSCH can refer to a radio resource through which downlink data is transmitted and received. Alternatively, the PDSCH can refer to the downlink data itself. The PDCCH can refer to a radio resource through which downlink control information (e.g., DCI) is transmitted and received. Alternatively, the PDCCH can refer to the downlink control information itself.

[0120] A terminal can perform a monitoring operation on the PDCCH to receive a PDSCH transmitted from a base station. The base station can inform the terminal of the configuration information for the PDCCH monitoring operation using a higher layer message (e.g., an RRC (radio resource control) message). The configuration information for the PDCCH monitoring operation can include CORESET (control resource set) information and search space information.

[0121] CORESET information may include PDCCH DMRS (demodulation reference signal) information, PDCCH precoding information, PDCCH opportunity information, etc. The PDCCH DMRS may be a DMRS used to demodulate the PDCCH. The PDCCH opportunity may be a region where the PDCCH can exist. In other words, the PDCCH opportunity may be a region where DCI can be transmitted. The PDCCH opportunity may be referred to as a PDCCH candidate. The PDCCH opportunity information may include time resource information and frequency resource information of the PDCCH opportunity. In the time domain, the length of the PDCCH opportunity may be indicated in symbol units. In the frequency domain, the size of the PDCCH opportunity may be indicated in RB units (e.g., in PRB (physical resource block) units or CRB (common resource block) units).

[0122] The search space information may include a coreset identifier (ID) associated with the search space, a period of PDCCH monitoring, and / or an offset. Each of the PDCCH monitoring period and offset may be indicated on a slot-by-slot basis. In addition, the search space information may further include an index of the symbol at which the PDCCH monitoring operation begins.

[0123] A base station can configure a bandwidth part (BWP) for downlink communication. The BWP can be configured differently for each terminal. The base station can inform the terminal of the BWP configuration information using higher layer signaling. The higher layer signaling can mean "transmission operation of system information" and / or "transmission operation of RRC (radio resource control) message." The number of BWPs configured for one terminal can be one or more. The terminal can receive BWP configuration information from the base station and check the BWP(s) configured by the base station based on the BWP configuration information. When multiple BWPs are configured for downlink communication, the base station can activate one or more BWPs among the multiple BWPs. The base station can transmit the configuration information of the activated BWP(s) to the terminal using at least one of higher layer signaling, a medium access control (MAC) control element (CE), or DCI. The base station can 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 perform a downlink reception operation in the activated BWP(s).

[0124]

[0125] full duplex (fd) communication

[0126] Dual communication, which allows for both transmission and reception on a single device, is typically used in communications such as 2G, 3G, and 4G, using the following methods.

[0127] - Time division duplexing (TDD): Separates transmission and / or reception using time division. In TDD, transmission and reception use the same frequency band but can be performed in different time slots.

[0128] Frequency Division Duplexing (FDD): Transmit and receive frequencies are separated. In FDD, transmission and reception use different frequency bands. FDD minimizes frequency interference and enables continuous two-way communication.

[0129] Dual-mode communication, FDD and TDD, have their own advantages and limitations. FDD, which utilizes continuous time-domain resources, offers low latency but suffers from low throughput due to the separation of transmit and receive frequency bands. TDD, which utilizes the entire frequency band, splits time-domain resources into downlink and uplink, resulting in even longer latency. Therefore, the fixed time / frequency resource allocation of TDD / FDD presents both advantages and disadvantages.

[0130] To overcome the limitations of existing duplex communication methods, single-frequency full-duplex communication can be introduced, improving spectral efficiency and flexibility. Single-frequency full-duplex communication allows downlink and uplink to coexist on the same spectrum frequency, theoretically doubling spectral efficiency.

[0131] Single-frequency full-duplex communication improves spectral efficiency, but simultaneous transmission of signals on the downlink and uplink can result in serious interference. This complicates the design of base stations and terminals, potentially increasing costs.

[0132] Here, subband non-overlapping full duplex (SBFD) communication can be discussed. Fig. 9 illustrates an example of a slot structure for SBFD.

[0133] Referring to Figure 9, SBFD refers to a communication method in which a single symbol has a transmission subband and a reception subband, and simultaneous transmission and / or reception can be performed through a single symbol. The SBFD communication method can improve upon existing limitations because a base station can simultaneously perform transmission and / or reception on each non-overlapping subband.

[0134] There are various ways to classify subbands in SBFD. For convenience, we assume that an SBFD subband within a TDD carrier consists of a single RB or a set of contiguous RBs for the same transmission direction. Furthermore, an SBFD symbol is defined as a symbol containing the subbands used by the base station for SBFD operation.

[0135] The maximum number of UL subbands for SBFD operation in an SBFD symbol within a TDD carrier can be set to 1, as shown in FIG. 9, but this number may be expanded in the future. The location of the subbands is not particularly restricted. Therefore, unlike FIG. 9, the UL subbands can be located on either side of the carrier or in the middle of the carrier. If necessary, guard bands may be included between the subbands.

[0136] SBFD operation can also be supported on SSB symbols, where the SSB can be either CD-SSB (cell defining SSB) or NCD-SSB (non-cell defining SSB).

[0137] To ensure smooth SSB detection and measurement, SBFD-aware UEs are not permitted to transmit in SSB symbols, but may be permitted to receive within the DL BWP of the SSB symbol. This may have the disadvantage of reducing UL opportunities. To address this, SBFD-aware UEs may be permitted to transmit in SSB symbols. In this case, the UE may be configured to transmit UL only on the UL subband based on scheduling, configuration, UE measurement, or priority rules by the base station. If an SBFD-aware UE transmits in SSB symbols, this may negatively impact SSB detection and measurement.

[0138] It may be allowed to consist of SBFD symbols and non-SBFD symbols within a single slot. However, if the frequency of transitions between SBFD symbols and non-SBFD symbols is high, the implementation complexity increases and transmission and reception interruptions may occur during the transitions. Therefore, in order to avoid frequent transitions between SBFD symbols and non-SBFD symbols, a restriction 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, a maximum of two transition points, one from a non-SBFD symbol to an SBFD symbol and one from an SBFD symbol to a non-SBFD symbol, may be configured to be located on slot boundaries or within a slot within a TDD UL / DL pattern period. Depending on the channel conditions and implementation, a guard period between SBFD symbols and non-SBFD symbols may also need to be configured.

[0139] The time and frequency positions of subbands within a TDD carrier can be configured in various ways. Furthermore, whether the base station indicates to the UE the time and / or frequency positions of the subbands to be used for SBFD operation can also be determined in various ways. In an RRC connection state, the UE can be configured using one of four methods, as shown in Table 4 below.

[0140] Information about the subband to be 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 a new operation related to SBFD SBFD-unaware terminal: Existing method 3rd SBFD operation option Time position of the subband SBFD-aware terminal: Introduction of a new operation related to SBFD SBFD-unaware terminal: Existing method 4th SBFD operation option Time position and frequency position of the subband SBFD-aware terminal: Introduction of a new operation related to SBFD SBFD-unaware terminal: Existing method

[0141] Among the four options, at least the fourth SBFD operation option can be set as the criterion for SBFD operation in the RRC connected state. SBFD symbols can be used in the random access phase. If random access is allowed in the SBFD symbol for SBFD-aware terminals, random access delay time can be reduced, PRACH collision probability can be reduced, and PRACH and Msg3 coverage can be improved. However, transmission of PRACH and Msg3 in the UL subband of the SBFD symbol can 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 is allowed in the SBFD symbol only for PRACH and Msg3 transmissions in symbols configured as DL in TDD-UL-. Semi-static configuration of subband time and frequency positions can be used to indicate subband positions for SBFD operation. In the case of semi-static configuration of subband time positions for SBFD operation, the SBFD subband time positions can be explicitly or implicitly indicated within a certain period. In addition, in the case of semi-static configuration of subband frequency positions for SBFD operation, at least the frequency positions of the UL subband can be explicitly or implicitly indicated. For example, in the case of semi-static SBFD, the configurations for the DL subband and guard band can be used as follows. Here, the configuration for the guard band can be applied only when the guard band exists.

[0142] - 1st DL subband option: The frequency location of the DL subband is explicitly set. The guard band can be implicitly transferred to RBs that do not belong to the UL subband or DL ​​subband.

[0143] - 2nd DL subband option: The number of RBs for the guard band is explicitly set. DL subbands can be implicitly transferred to UL subbands or RBs that do not belong to the guard band.

[0144] In the case of semi-static SBFD, an SBFD-aware terminal does not transmit UL channels / signals or receive DL channels / signals in the recognized guard band. In the case of semi-static configuration of subband frequency locations for SBFD operation, the frequency locations of UL / DL subbands can be conveyed using the common resource block (CRB) grid. In the case of semi-static configuration of subband locations, the same subband frequency resources can be considered as a baseline in different SBFD symbols.

[0145] An SBFD-aware terminal that is semi-statically configured as a UL subband within an SBFD symbol configured as a downlink can be configured as follows.

[0146] A UE may allow UL transmission within a UL subband within a symbol, and DL reception within a DL subband within a symbol. UL transmission outside a UL subband is not permitted within a symbol. The frequency locations of the DL subbands may be known to the SBFD-aware UE. The DL subband frequency locations may be conveyed to the UE explicitly or implicitly. Here, UL transmission within a symbol is within an active UL BWP, and DL reception is within an active DL BWP. Whether DL reception outside a semi-statically configured DL subband is permitted in a symbol configured as downlink for an SBFD-aware UE may depend on the following options.

[0147] - Option 1 (Semi-static SBFD): DL reception outside the semi-statically configured DL subband is not allowed.

[0148] - Option 2: (Dynamic SBFD): DL reception outside the semi-statically configured DL subbands is allowed.

[0149] Additionally, for SBFD operation in a flexibly set symbol, an SBFD-aware terminal can be operated through a first flexible SBFD setting and a second flexible SBFD setting as follows.

[0150] First dynamic SBFD configuration: The UE may be allowed to transmit UL signals within the UL subband within a symbol, and may be allowed to receive DL signals within the DL subband within a symbol. However, UL transmission outside the UL subband is not permitted within the symbol. The frequency location of the DL subband may be known to the UE, depending on the SBFD. Whether DL reception outside the DL subband is permitted within a symbol may be configured in various ways and is not limited by any specific method.

[0151] Second dynamic SBFD configuration: UEs are allowed to transmit UL signals within the UL subband within a symbol, and DL reception within the DL subband within a symbol. The frequency locations of the DL subbands may be known to the UE, depending on the SBFD. RBs outside the UL subbands, excluding the guard band, can be used as UL or DL, and from the base station's perspective, the transmission directions of all RBs within a symbol are used identically.

[0152] SBFD-aware UE behavior, whether guard band signaling is required, and whether symbols can be converted to DL-only symbols can be configured in various ways and are not limited to any particular method.

[0153] Here, in both the first and second dynamic SBFD configurations, UL transmission is within the active UL BWP within a symbol, 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.

[0154] Additionally, whether DL reception outside of the semi-statically configured DL subband and UL transmission outside of the semi-statically configured UL subband are allowed in dynamically configured symbols for SBFD aware UEs may depend on the following options:

[0155] - 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.

[0156] - Option 2 (Dynamic SBFD): DL reception outside of the semi-statically configured DL subbands is allowed. However, UL transmission outside of the semi-statically configured UL subbands is not allowed.

[0157] - 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.

[0158] When using dynamic SBFD configuration instead of semi-static SBFD configuration, the following phenomena may occur: Compared to semi-static SBFD, dynamic SBFD can better adapt UL / DL resource requirements based on UL / DL traffic load.

[0159] Dynamic SBFD increases base station implementation complexity due to dynamic antenna / panel switching and filter / RF tuning, and can result in resource loss due to transition times. It also increases inter-base station CLI and scheduling complexity. If a UE supports dynamic SBFD, UE implementation complexity may increase, and dynamic SBFD can increase inter-device CLI.

[0160] If dynamic SBFD is supported, the following options may be considered:

[0161] Option 1: Dynamic SBFD can be configured via DCI used to schedule DL reception outside of the semi-statically configured SBFD DL subbands and / or UL transmission outside of the semi-statically configured SBFD UL subbands.

[0162] - Option 2: Dynamic SBFD can be set via a non-schedulable DCI. The non-schedulable DCI can indicate whether the symbol is an SBFD symbol.

[0163] - Option 3: Dynamic SBFD can be set by MAC-CE indicating whether the symbol is an SBFD symbol.

[0164] Additionally, inter-slot / in-slot / inter-repetitive / inter-group frequency hopping using DMRS bundling of PUSCH / PUCCH can be further considered. Therefore, resource allocation in the frequency domain, including frequency hopping, in the time domain, and in the power and spatial domains can be improved.

[0165] When the boundaries between RBG and SBFD subbands are not aligned, it can 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 SBFD-aware terminals, the DL RBG portion inside the DL subband and the UL RBG portion inside the UL subband can be used for better resource utilization. However, at least for 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.

[0166] For semi-static SBFD, for CSI reporting subbands overlapping with SBFD subband boundaries, CSI reporting may be performed based on CSI-RS resources excluding CSI-RS resources outside DL subbands for SBFD-aware terminals. For semi-static SBFD, for CSI-RS resources overlapping with SBFD subband boundaries, only CSI-RS resources within DL subbands may be valid for SBFD-aware terminals. For SBFD-aware terminals, PRG(s) with sizes of 2 and 4 overlapping with subband boundaries for PDSCH and settings for a wideband precoder for non-contiguous DL subbands may also be additionally configured.

[0167] For PRGs overlapping subband boundaries, using part of the DL PRG within a DL subband can increase scheduling flexibility and resource utilization, but the limited RBs of the partial PRG can degrade channel estimation quality compared to the PRG, and implementing this feature can increase UE complexity.

[0168] Once the PRG is determined to be wideband, two options can be considered. The first option allows for the allocation of non-contiguous frequency resources across two DL subbands, but contiguous frequency resources within each DL subband can be allocated. The second option allows for the allocation of non-contiguous frequency resources across two DL subbands.

[0169] The following four options can be considered for frequency resource allocation for CSI-RS in downlink subbands for SBFD-aware terminals, and the CSI-RS sequence generation procedure can be applied as is.

[0170] - Option 1: Two adjacent CSI-RS resources connected

[0171] - Option 2: One CSI-RS resource

[0172] - Option 2-1: Non-adjacent CSI-RS resource allocation

[0173] - Option 2-2: Allocate one continuous CSI-RS resource with non-contiguous CSI-RS resources derived by excluding frequency resources outside the DL subband.

[0174] For UL transmission and DL reception over SBFD and non-SBFD symbols in different slots (where each transmission / reception within a slot has either all SBFD symbols or all non-SBFD symbols), the following approaches can be considered. First, a method can be considered where transmission / reception is performed only with SBFD symbols or only with non-SBFD symbols. In this case, a procedure can be used to indicate that a transmission / reception situation is valid within one symbol type and not valid in the other. Second, a method can be considered where transmission / reception is performed with SBFD and non-SBFD symbols. Which approach is used can be determined through the configuration or scheduling of the base station. The frequency resources, power control, and beam / space relationships for all transmissions / receptions can be the same for the first approach, but can be configured differently for the second approach, and additional signaling may be required.

[0175] Frequency resource allocation for SBFD-aware terminals can be performed in the following manner. First, frequency domain resource allocation can be determined separately for SBFD slots and non-SBFD slots. In this case, separate frequency domain resource allocation settings / indications can be performed for SBFD slots and non-SBFD slots, or separate frequency resources can be determined for SBFD slots and non-SBFD slots 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.

[0176] Second, rate matching or puncturing may be performed on RBs outside the DL / UL subbands for DL / UL channels / signals. Third, DL / UL channels / signals that overlap with RBs outside the DL / UL subbands in the SBFD slot may be dropped or postponed.

[0177] When there are physical channels / signals mapped to SBFD and non-SBFD symbols within a slot, the terminal may not transmit or receive the physical channels / signals within the slot, or may transmit or receive the physical channels / signals within the slot only under certain conditions. The certain conditions may vary depending on whether phase continuity can be maintained across 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.

[0178] For SBFD-aware terminals, two CSI reporting configurations can be delivered to the terminal for CSI reports associated with periodic / semi-persistent CSI-RSs, one configuration associated with SBFD symbols and the other associated with non-SBFD symbols. In this case, the CSI-RS associated with each CSI-ReportConfig can be restricted to only SBFD symbols or non-SBFD symbols through appropriate periodic base station configuration. However, this approach may limit the flexibility of base station configuration. Furthermore, a single CSI reporting configuration can be associated with both SBFD and non-SBFD symbols. In this case, measurement restrictions can be configured to prevent the terminal from averaging CSI measurements across SBFD and non-SBFD symbols, as per the existing specification.

[0179] For SRS, PUCCH and PUSCH of SBFD symbols and non-SBFD symbols in different slots, they may be configured to have separate resources, FH parameters, UL power control parameters and / or beam / space relationships.

[0180] The base station may configure the CORESET and search space in such a way that the MO of the search space occurs in either the SBFD or non-SBFD symbols, or the MO of the search space occurs in both the SBFD and non-SBFD symbols, but the associated CORESET does not overlap the DL subband boundaries of the SBFD symbols.

[0181] When the MO of the search space occurs in both SBFD and non-SBFD symbols and the CORESET and search space are configured such that the associated CORESET overlaps the DL subband boundaries of the SBFD symbols, the following options may be considered:

[0182] - Option 1: Separate valid resources for CORESET from SBFD and non-SBFD symbols.

[0183] - Option 2: Rate matching or punching in the REG of the PDCCH outside the DL subband.

[0184] - 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.

[0185] - Option 4: Delete the search space if the connected CORESET overlaps with an RB outside the DL subband.

[0186] - Option 5: Separate the search space associated with the CORESET of SBFD and non-SBFD symbols.

[0187] Base station interference due to time misalignment may also be considered. Time misalignment between UL reception and DL transmission due to non-zero timing advance settings at the terminal can result in increased interference, assuming no base station transmission chain failures or DL ​​subband filtering in the base station receive chain.

[0188] The increase in self-interference in the UL subband due to timing misalignment between UL reception and DL transmission at the base station can be very small (~1 dB), considering impairments in the base station transmit chain and DL subband filtering in the base station receive chain. Filtering to suppress self-interference in the DL subband in the base station receive chain may incur some switching time / delay in the UL symbol to bypass the filter, which may result in insertion loss.

[0189]

[0190] The present disclosure describes techniques related to sub-band full-duplex (SBFD) in wireless communication systems. In particular, the present disclosure proposes various embodiments related to signaling and procedures related to SBFD symbols and non-SBFD symbols. Here, SBFD refers to a technique that allows simultaneous downlink (DL) and uplink (UL) transmission and / or reception in a portion of the overall system bandwidth. SBFD can improve cell throughput, reduce delay time, improve transmission and reception signal reliability, and increase coverage.

[0191]

[0192] FIG. 10 illustrates an example of a SBFD configuration in a wireless communication system according to an embodiment of the present disclosure. Referring to FIG. 10, a portion of the system bandwidth may be configured as a DL subband and an UL subband for SBFD. The base station may transmit configuration information regarding the UL / DL subbands associated with SBFD to the terminal via higher layer signaling (e.g., SIB, RRC, etc.). The terminal may perform transmission and / or reception operations based on the UL / DL subband configuration information configured by the base station. For example, the terminal may receive or transmit data from the base station or another terminal based on the UL / DL subband configuration information configured by the base station.

[0193] As an example of UL / DL subband configuration for SBFD operation, UL / DL subbands may be configured in a carrier operating in TDD. UL / DL subbands may be configured in slots or symbols configured as downlink or flexible among TDD slots or symbols. One slot may be configured with an Orthogonal Frequency Division Multiplexing (OFDM) symbol (hereinafter, “SBFD symbol”) configured with UL / DL subbands and a symbol not configured with a full-duplex subband (hereinafter, “non-SBFD symbol”).

[0194] 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 region configured in a higher layer. For example, the SBFD symbol pattern may be configured continuously according to a pattern and period of 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 TDD UL / DL pattern period.

[0195] According to one example of the present disclosure, frequency positions corresponding to UL / DL subbands within an SBFD symbol can be explicitly configured through higher layer signaling. For example, the frequency position and bandwidth size of the UL subband, and the frequency position and bandwidth size of the DL subband, can each be configured through higher layer signaling. Here, a guardband can be located between the UL subband and the DL subband. For example, the guardband can correspond to a band that is not composed of the UL subband and the DL subband. The frequency positions of the UL / DL subbands can be independently configured according to the subcarrier spacing (SCS) value. In other words, UL / DL subbands with different SCS values ​​can have different frequency positions. Alternatively, UL / DL subbands with different SCS values ​​can have the same frequency position.

[0196] The UL / DL subbands 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 subbands for SBFD can be configured via the same type of signaling. For example, if the UL / DL subband configuration for SBFD is configured via cell-specific signaling, the subcarrier spacing of the corresponding UL / DL subbands can also be configured via cell-specific signaling. For example, the SCS of the UL / DL subbands can be based on the SCS setting value included in the cell-common TDD configuration (e.g., the value configured by referenceSubcarrierSpacing in the TDD-UL-DL-ConfigCommon configuration information).

[0197] Meanwhile, in a wireless communication system (e.g., a 5G NR system), a portion of the total system bandwidth (Bandwidth Part, hereinafter referred to as BWP) may be configured for actual transmission and reception for purposes such as improving cell yield, reducing delay time, and reducing terminal power consumption. A base station may configure one or more BWPs for a terminal for transmission and / or reception in UL and DL. At least one BWP may be configured for a terminal from the base station. One of the configured BWPs may be activated. The terminal and the base station may communicate using the activated BWP.

[0198] For example, the following parameters can be configured for each DL BWP and UL BWP of the terminal.

[0199] - Subcarrier spacing (e.g. subcarrierSpacing)

[0200] - CP(cyclic prefix) length (e.g. cyclicPrefix)

[0201] - Frequency location and bandwidth of each BWP (e.g. locationAndBandwidth)

[0202] - ID of each BWP (e.g. BWP-Id)

[0203] When a terminal and / or a base station operates in a TDD band, DL BWPs and UL BWPs configured with the same BWP ID are connected to each other, and DL BWPs and UL BWPs with the same BWP ID can be activated. In addition, when a terminal and / or a base station operates in a TDD band, the center frequencies of the DL BWP and UL BWP can be the same.

[0204] In an activated DL BWP, a terminal can receive a downlink physical layer channel (e.g., a Physical Downlink Control Channel (PDCCH) or a Physical Downlink Shared Channel (PDSCH)) based on an SCS value and a CP length value configured in the corresponding DL BWP. Hereinafter, reception or transmission of a physical layer channel may refer to reception or transmission of a signal through the physical layer channel. Reception or transmission in an activated BWP may refer to reception or transmission using resources within the activated BWP. Similarly, in an activated UL BWP, a terminal can transmit an uplink physical layer channel (e.g., a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH)) based on an SCS value and a CP length value configured in the corresponding UL BWP.

[0205]

[0206] FIG. 11 illustrates an example of a system configuration represented by a combination of a configuration related to SBFD and a configuration related to BWP in a wireless communication system according to one embodiment of the present disclosure. Hereinafter, the configuration related to SBFD may be referred to as an SBFD configuration, and the configuration related to BWP may be referred to as a BWP configuration.

[0207] Referring to Fig. 11, multiple BWPs, for example, BWP#1 and BWP#2, are configured, BWP#1 is activated, and BWP#2 is deactivated. In addition, in the example of Fig. 11, UL / DL subbands for SBFD are configured in the second and third slots. Here, for SBFD symbols in which UL / DL subbands are configured, resource regions (e.g., PRBs (Physical Resource Blocks)) available for actual UL / DL transmission and / or reception can be defined as follows.

[0208] - UL usable PRB: UL subband frequency resource area within the activated UL BWP

[0209] - DL Available PRB: DL subband frequency resource area within the activated DL BWP

[0210] That is, the base station and the terminal can perform uplink transmission and / or reception for SBFD symbols through the UL available PRB within the activated UL BWP, and can perform downlink transmission and / or reception through the DL available PRB within the activated DL BWP.

[0211]

[0212] FIG. 12A illustrates an example of expressing a system configuration represented by a combination of an SBFD configuration and a BWP configuration in a wireless communication system according to an embodiment of the present disclosure in units of slots. FIG. 12B illustrates an example of expressing a system configuration represented by a combination of an SBFD configuration and a BWP configuration in a wireless communication system according to an embodiment of the present disclosure in units of symbols. FIGS. 12A and 12B are exemplary drawings, and the number of resource elements, resource blocks, symbols, and slots included in a subband or a BWP is not limited by the representations in FIGS. 12A and 12B. In other words, one block illustrated in FIGS. 12A and 12B may represent one symbol, one slot, multiple symbols, or multiple slots.

[0213] Referring to FIG. 12, the SCSs of the DL BWP, UL BWP, and UL / DL subbands may be configured with different values. For example, the DL BWP may be configured with a 30 kHz SCS, the UL BWP may be configured with a 60 kHz SCS, and the UL / DL subbands may be configured with a 15 kHz SCS. In this case, within one activated UL BWP or DL ​​BWP, the SCSs of SBFD symbols and the SCSs of non-SBFD symbols are different. Therefore, it may be unclear which SCS should be assumed for transmission and / or reception between a base station and a terminal. To address this issue, embodiments related to transmission and / or reception operations between various base stations and terminals according to the SCS configuration of the BWP and the SCS configuration for the UL / DL subbands according to the present disclosure are provided.

[0214]

[0215] FIG. 13 illustrates an example of a procedure for transmitting a signal based on SBFD in a wireless communication system according to one embodiment of the present disclosure. FIG. 13 also illustrates an operating method of a terminal.

[0216] Referring to FIG. 13, in step S1301, the terminal receives configuration information including position information of symbols and a first SCS value. Here, the symbols include at least one SBFD symbol. The first SCS value may include an SCS value for the SBFD symbol. For example, the first SCS value may be a value indicated by referenceSubcarrierSpacing included in the TDD-UL-DL-ConfigCommon configuration information. The configuration information including the position information of symbols and the first SCS value may be received by upper layer signaling. For example, the configuration information may be received by signaling of the RRC layer.

[0217] In step S1303, the terminal receives configuration information for the BWP. Here, the configuration information for the BWP may include a second SCS value. The second SCS value may include an SCS value for the BWP. That is, the second SCS value may include an SCS value for at least one of the UL BWP or the DL BWP. For example, the second SCS value may include an SCS value specific to the terminal. For example, the second SCS value may be a value indicated by subcarrierSpacing included in the BWP-config. The configuration information for the BWP may be received by upper layer signaling. For example, the configuration information may be received by signaling of the RRC layer.

[0218] In step S1305, the terminal receives scheduling information for transmission within the BWP. The scheduling information may be received via at least one of upper-layer signaling or physical layer signaling. For example, the scheduling information may indicate fixed or dynamic resource allocation. The scheduling information, as resource information for uplink transmission, may include information regarding the PUSCH.

[0219] In step S1307, the terminal transmits a signal based on scheduling information. For example, the terminal may transmit an uplink signal on a PUSCH based on signaling. Here, the signal may include a first signal transmitted in a SBFD symbol and a second signal transmitted in a non-SBFD symbol. The non-SBFD symbol may be referred to as a non-SBFD symbol. Each of the first signal and the second signal may be generated based on at least one of a first SCS value or a second SCS value.

[0220] In FIG. 13 and the following procedures, in step S1301, an SCS value for an SBFD symbol is received. Here, the SCS value for the SBFD symbol, i.e., the first SCS value, may not be an SCS value that is applied only to the SBFD symbol. That is, the SCS value received in step S1301 may be an SCS value specific to a terminal or a cell, and may be information for configuring an SCS value that is commonly applied to a plurality of types of symbols including the SBFD symbol. In other words, the first SCS value may not be an SCS value that is applied only to the SBFD symbol, but may be an SCS value that is commonly applied to the cell.

[0221]

[0222] FIG. 14 illustrates an example of a procedure for receiving a signal based on SBFD in a wireless communication system according to an embodiment of the present disclosure. FIG. 14 also illustrates an operating method of a base station.

[0223] Referring to FIG. 14, in step S1401, the base station transmits configuration information including position information of symbols and a first SCS value. Here, the symbols include at least one SBFD symbol. The first SCS value may include an SCS value for the SBFD symbol. For example, the first SCS value may be a value indicated by referenceSubcarrierSpacing included in TDD-UL-DL-ConfigCommon configuration information. The configuration information including position information of symbols and the first SCS value may be received by upper layer signaling. For example, the configuration information may be received by signaling of the RRC layer.

[0224] In step S1403, the base station transmits configuration information for the BWP. Here, the configuration information for the BWP may include a second SCS value. The second SCS value may include an SCS value for the BWP. That is, the second SCS value may include an SCS value for at least one of the UL BWP or the DL BWP. For example, the second SCS value may include an SCS value specific to the terminal. For example, the second SCS value may be a value indicated by subcarrierSpacing included in the BWP-config. The configuration information for the BWP may be received by upper layer signaling. For example, the configuration information may be received by signaling of the RRC layer.

[0225] In step S1405, the base station generates and transmits scheduling information for transmission within the BWP. The scheduling information may be received via at least one of upper-layer signaling or physical layer signaling. For example, the scheduling information may indicate fixed or dynamic resource allocation. The scheduling information, as resource information for uplink transmission, may include information regarding the PUSCH.

[0226] In step S1407, the base station receives a signal based on scheduling information. The base station may receive an uplink signal based on signaling including the scheduling information. For example, the base station may receive an uplink signal using resources indicated in the scheduling information. That is, the base station may receive an uplink signal on a PUSCH based on the signaling. Here, the signal may include a first signal transmitted in a SBFD symbol and a second signal transmitted in a non-SBFD symbol. The non-SBFD symbol may be referred to as a non-SBFD symbol. Each of the first signal and the second signal may be generated based on at least one of a first SCS value or a second SCS value.

[0227]

[0228] In the procedures of FIGS. 13 and 14, the transmission and reception procedures of uplink signals have been described. However, the above-described embodiments are not limited to the transmission and reception procedures of uplink signals, and may be applied to the transmission and reception procedures of downlink signals. When a downlink signal is transmitted or received, resources for the downlink signal may be scheduled in steps S1305 and S1405. In addition, a signal may be generated and transmitted by the base station in steps S1307 and S1407. Similarly, in the embodiments described below, the transmission and reception procedures of uplink signals are exemplary and may be applied to the transmission and reception procedures of downlink signals.

[0229]

[0230] As described above, the SCS values ​​for SBFD symbols and the SCS values ​​for non-SBFD symbols may be configured differently. In this case, it is necessary to determine which SCS value should be used to generate or interpret a signal. That is, for the signal generation operation of step S1307 or step S1407 in the aforementioned communication procedure, the SCS value must be determined. Accordingly, various embodiments for determining the SCS value for signal generation are described below.

[0231] The procedures described below are described using a situation in which uplink transmission is performed. However, the present disclosure is not limited thereto, and the embodiments described below can be similarly applied to uplink reception procedures performed by a base station and downlink transmission and reception procedures performed by a terminal and a base station. For example, the SCS determination procedure for generating a downlink signal can be performed by the base station.

[0232] In the following embodiments, the SBFD symbol region and the non-SBFD symbol region may refer to a resource region composed of a plurality of SBFD symbols and a resource region composed of a plurality of non-SBFD symbols, respectively.

[0233]

[0234] FIG. 15 illustrates an example of a procedure for transmitting a signal based on different SCSs depending on the type of symbol in a wireless communication system according to one embodiment of the present disclosure. FIG. 15 also illustrates an operating method of a terminal.

[0235] Referring to FIG. 15, in step S1501, the terminal receives a first SCS value and a second SCS value. In other words, the terminal may receive configuration information including the first SCS value and configuration information including the second SCS value. The first SCS value and the second SCS value may be received by upper layer signaling. Here, the first SCS value may include an SCS value for an SBFD symbol, and the second SCS value may include an SCS value for a non-SBFD symbol or an SCS value for BWP. The first SCS value and the second SCS value may be received by separate information elements. The configuration information including the first SCS value may be received as part of information regarding a pattern of an SBFD symbol, and the configuration information including the second SCS value may be received as part of information regarding BWP.

[0236] In step S1503, the terminal receives scheduling information. The scheduling information may include information related to resources for transmission by the terminal. For example, the scheduling information may include information indicating resources for PUSCH. In the present embodiment, resources for transmission may be allocated across SBFD symbols and non-SBFD symbols.

[0237] In step S1505, the terminal determines SCS values ​​according to the type of the symbol. The terminal may decide to apply one of the previously configured SCS values ​​according to the type of the symbol. Here, the types of symbols are classified into SBFD symbols and non-SBFD symbols. For example, the terminal may select a first SCS value as an SCS value for a signal transmitted in an SBFD symbol. Additionally, the terminal may select a second SCS value as an SCS value for a signal transmitted in a non-SBFD symbol. That is, when resources are allocated across SBFD symbols and non-SBFD symbols, the terminal may determine the first SCS value for a signal corresponding to an SBFD symbol and the second SCS value for a signal corresponding to a non-SBFD symbol as SCS values ​​for the signal.

[0238] In step S1507, the terminal transmits a signal based on the first SCS value in the SBFD symbol region. That is, for transmission in the SBFD symbol, the terminal can generate a signal based on the first SCS value and transmit the generated signal. Here, the first SCS value can affect the IFFT operation performed to generate the OFDM symbol. For example, the terminal can perform an IFFT operation with a size corresponding to the first SCS value.

[0239] In step S1509, the terminal transmits a signal based on the second SCS value in the non-SBFD symbol region. That is, for transmission in the non-SBFD symbol, the terminal can generate a signal based on the second SCS value and transmit the generated signal. Here, the second SCS value can affect the IFFT operation performed to generate the OFDM symbol. For example, the terminal can perform an IFFT operation with a size corresponding to the second SCS value.

[0240]

[0241] FIG. 16 illustrates a procedure for transmitting a signal based on a single SCS common to various types of symbols in a wireless communication system according to one embodiment of the present disclosure. FIG. 16 also illustrates an operating method of a terminal.

[0242] Referring to FIG. 16, in step S1601, the terminal receives at least one SCS value. In other words, the terminal may receive configuration information including at least one of a first SCS value or a second SCS value. The first SCS value and the second SCS value may be received by higher layer signaling. Here, the first SCS value may include an SCS value for an SBFD symbol, and the second SCS value may include an SCS value for a non-SBFD symbol or for BWP. The first SCS value and the second SCS value may be received by separate information elements. The configuration information including the first SCS value may be received as part of information regarding a pattern of an SBFD symbol, and the configuration information including the second SCS value may be received as part of information regarding BWP.

[0243] In step S1603, the terminal receives scheduling information. The scheduling information may include information related to resources for transmission by the terminal. For example, the scheduling information may include information indicating resources for PUSCH. The resources for transmission may be allocated across SBFD symbols and non-SBFD symbols. Alternatively, the resources for transmission may be allocated to include only one type of symbol, either SBFD symbols or non-SBFD symbols. In other words, the resources for transmission may not span SBFD symbols or non-SBFD symbols.

[0244] In step S1605, the terminal determines an SCS value for the signal. According to various embodiments, the SCS value may be determined based on a predefined priority or a predefined rule. Here, the rule may be defined based on a scheduling scheme, service, or traffic characteristics. For example, if a higher priority is given to a first SCS value, the first SCS value may be determined as an SCS value for a signal transmitted in an SBFD symbol and a non-SBFD symbol. Alternatively, if a higher priority is given to a second SCS value, the second SCS value may be determined as an SCS value for a signal transmitted in an SBFD symbol and a non-SBFD symbol. As another example, if a rule is applied that determines an SCS value according to traffic characteristics, the terminal may select either the first SCS value or the second SCS value according to the traffic characteristics of data transmitted through the allocated resource. Here, the traffic characteristics for selecting an SCS and the mapping relationship between SCS values ​​may be predefined or configured by upper layer signaling. As another example, the terminal may determine the SCS value used for transmitting scheduling information as the SCS value for the signal. In other words, the terminal may determine the SCS value applied to the PUCCH as the SCS value for the signal.

[0245] In step S1607, the terminal transmits a signal in at least one of the SBFD symbol region or the non-SBFD symbol region. To this end, the terminal may generate a signal based on the determined SCS value. The SCS value may affect the IFFT operation performed to generate the OFDM symbol. For example, the terminal may perform an IFFT operation of a size corresponding to the determined SCS value.

[0246]

[0247] The present disclosure below describes specific embodiments for SCS determination. The embodiments described below can be applied to determine SCS values ​​in the aforementioned procedure.

[0248]

[0249] [Example 1]

[0250] According to one embodiment of the present disclosure, a base station and a terminal may perform transmission and / or reception by assuming different SCSs for SBFD symbols and non-SBFD symbols. More specifically, the base station and the terminal may perform transmission and / or reception based on an SCS configuration configured for UL / DL subbands (e.g., referenceSubcarrierSpacing in cell-specific TDD-UL-DL-ConfigCommon) for an SBFD symbol, and may perform transmission and / or reception based on SCS configuration information in an activated UL / DL BWP configuration (e.g., subcarrierSpacing in BWP-config) for a non-SBFD symbol. In the example of FIG. 12, DL transmission and reception between the base station and the terminal in a non-SBFD symbol may be performed based on a 30 kHz SCS, and UL transmission and reception may be performed based on a 60 kHz SCS. Additionally, both UL / DL transmission and reception between the base station and the terminal in the SBFD symbol can be performed based on 15 kHz SCS.

[0251] According to another embodiment of the present disclosure, when there is a UL / DL subband in an activated BWP, the base station and the terminal can perform transmission and / or reception by assuming different SCSs for SBFD symbols and non-SBFD symbols. More specifically, for an SBFD symbol, the base station and the terminal can perform transmission and / or reception based on the SCS configuration of the UL / DL subband (e.g., referenceSubcarrierSpacing in cell-specific TDD-UL-DL-ConfigCommon). In addition, for a non-SBFD symbol, the base station and the terminal can perform transmission and / or reception based on the SCS configuration information in the activated UL / DL BWP configuration (e.g., subcarrierSpacing configuration information in BWP-config). If there is no UL / DL subband in the currently activated BWP, the base station and the terminal can perform transmission and / or reception based on the SCS configuration of the currently activated BWP for both the SBFD symbol and the non-SBFD symbol.

[0252] FIG. 17 illustrates an example of resource scheduling across non-SBFD symbols and SBFD symbols in a wireless communication system according to one embodiment of the present disclosure. Here, an SBFD symbol may refer to a symbol included in an UL / DL subband, and a non-SBFD symbol may refer to a symbol included in an UL or DL ​​BWP.

[0253] Referring to FIG. 17, PDSCH transmission or reception can be performed across non-SBFD symbols and SBFD symbols. In other words, dynamically or semi-statically scheduled UL / DL transmissions can be performed across SBFD symbols and non-SBFD symbols. Here, if the SCS values ​​configured in the SBFD symbols and non-SBFD symbols are different, an issue of uncertainty may arise regarding which SCS to assume for UL / DL transmission. Therefore, it is necessary for the base station and the terminal to determine which SCS to assume and transmit and / or receive the PDSCH. In this case, the following operations may be additionally considered.

[0254] - In one embodiment, if the SCS values ​​configured in the SBFD symbol and the non-SBFD symbol are different, i.e., if the SCS value configured in the UL / DL subband and the SCS value configured in the BWP are different, the terminal may not expect the UL / DL transmission scheduled across the SBFD symbol and the non-SBFD symbol from the base station. In other words, the base station may not schedule the UL / DL transmission across the SBFD symbol and the non-SBFD symbol.

[0255] - In one embodiment, when UL / DL transmission is scheduled across SBFD symbols and non-SBFD symbols, and the SCS values ​​configured for the SBFD symbols and non-SBFD symbols are different, i.e., the SCS value configured for the UL / DL subband is different from the SCS value configured for the BWP, the terminal and the base station may perform the UL / DL transmission and / or reception by assuming the SCS value configured for the UL / DL subband for the SBFD symbol and by assuming the SCS value configured for the BWP for the non-SBFD symbol.

[0256] - In one embodiment, when a UL / DL transmission is scheduled across an SBFD symbol and a non-SBFD symbol, and the SCS values ​​configured in the SBFD symbol and the non-SBFD symbol are different, i.e., the SCS value configured in the UL / DL subband and the SCS value configured in the BWP are different, the UE and the base station may assume one SCS value for the corresponding UL / DL transmission and perform transmission and / or reception. For example, the base station and the UE may apply the SCS value configured in the UL / DL subband (e.g., the SCS value configured in the SBFD symbol) for the corresponding UL / DL transmission. Alternatively, the base station and the UE may apply the SCS value configured in the UL / DL BWP (e.g., the SCS value configured in the non-SBFD symbol) for the corresponding UL / DL transmission.

[0257] - In one embodiment, if a UL / DL transmission is scheduled across SBFD symbols and non-SBFD symbols, and the SCS values ​​configured in the SBFD symbols and non-SBFD symbols are different, i.e., the SCS values ​​configured in the UL / DL subbands and the SCS values ​​configured in the BWP are different, the terminal and the base station may assume one SCS value for the corresponding UL / DL transmission and perform transmission and / or reception. For example, the terminal and the base station may apply the assumed SCS value when receiving a PDCCH including scheduling information for the corresponding UL / DL transmission. For example, if the terminal receives a PDCCH using an SCS of 30 kHz, and a PDSCH scheduled by the corresponding PDCCH spans an SBFD symbol and a non-SBFD symbol, the terminal may apply an SCS of 30 kHz to receive the corresponding PDSCH. Similarly, a base station may apply an SCS of 30 kHz to a PDSCH if the PDSCH is scheduled to span SBFD and non-SBFD symbols via a PDCCH having an SCS of 30 kHz.

[0258]

[0259] According to the embodiments described above, if the base station and the terminal perform communication by applying different SCSs for SBFD and non-SBFD symbols, a specific time interval (e.g., Tgap) may be required for SCS changes. For example, in the example of FIG. 13, if a 30 kHz SCS is applied to a DL non-SBFD symbol and a 15 kHz SCS is applied to an SBFD symbol, a guard interval corresponding to the Tgap symbol may be inserted between the last non-SBFD symbol and the first SBFD symbol of the DL. This guard interval may help ensure processing time for the terminal to prepare for signal transmission and / or reception with different SCSs.

[0260]

[0261] [Example 2]

[0262] In one embodiment of the present disclosure, a base station and a terminal may perform transmission and / or reception by assuming the same SCS for SBFD symbols and non-SBFD symbols.

[0263] In one embodiment, if a cell-common SCS value configured in a UL / DL subband for SBFD is X kHz, an SCS value configured in a DL BWP is Y kHz, and an SCS value configured in a UL BWP is Z kHz, the base station and the terminal may perform transmission and / or reception based on the cell-commonly configured X kHz SCS for both SBFD symbols and non-SBFD symbols. That is, the SCS values ​​configured in the DL BWP and UL BWP may be ignored, and the SCS value configured in the UL / DL subband may be preferentially applied. Through this, when the base station and the terminal transmit a signal through a UL / DL subband, the signal can effectively coexist with transmissions of other signals occurring in the corresponding UL / DL subband.

[0264] In one embodiment, if the cell-common SCS value configured in the UL / DL subbands for SBFD is X kHz, the SCS value configured in the DL BWP is Y kHz, and the SCS value configured in the UL BWP is Z kHz, the base station and the terminal may apply the Y kHz SCS when transmitting and / or receiving a DL signal for both the SBFD symbol and the non-SBFD symbol, and may apply the Z kHz SCS when transmitting and / or receiving a UL signal. That is, the cell-common SCS value configured in the UL / DL subbands may be ignored, and the terminal-specific SCS values ​​configured in the DL BWP and the UL BWP may be preferentially applied. This allows communication to be performed based on an SCS optimized for the terminal. For example, if the cell common SCS value is configured as 15 kHz and a terminal needs to transmit and receive corresponding data as traffic requiring low latency occurs, the base station can control the transmission and / or reception of data by configuring the terminal-specific SCS value to a larger value (e.g., 30 kHz or 60 kHz), thereby performing communication more suitable for the traffic type of the terminal.

[0265] In one embodiment, when a cell common SCS value configured for a UL / DL subband for SBFD is X kHz, an SCS value configured for a DL BWP is Y kHz, and an SCS value configured for a UL BWP is Z kHz, the SCS values ​​applied may be applied differently depending on a scheduling method of a signal. For convenience of explanation, the present disclosure refers to a case where a PDSCH / PUSCH is dynamically scheduled in one slot through Downlink Control Information (DCI) as a "first scheduling type," and a case where a PDSCH / PUSCH is dynamically or semi-statically scheduled in multiple slots as a "second scheduling type." For example, a semi-statically scheduled PDSCH (e.g., SPS PDSCH) and a semi-statically scheduled PUSCH (e.g., CG PUSCH), or a PDSCH scheduled across multiple slots (e.g., repeated PDSCH transmission, multi-slot PDSCH scheduling) and a PUSCH (e.g., repeated PUSCH transmission, multi-slot PUSCH) may correspond to the "second scheduling type". In one example, for UL / DL transmission and / or reception corresponding to the "first scheduling type", if the time resource for which the UL / DL is scheduled is an SBFD symbol, a cell-common SCS value configured in the UL / DL subband may be applied. On the other hand, if the time resource for which the UL / DL is scheduled is a non-SBFD symbol, a terminal-specific SCS value configured in the UL BWP or the DL BWP may be applied. In another example, for the "second scheduling type", if the scheduled UL / DL transmission occurs across SBFD symbols and non-SBFD symbols, transmission and reception may be performed based on one of the SCS values ​​of X, Y, and Z kHz. For example, transmission and / or reception may always be performed assuming the SCS value configured in the UL / DL subband for the "second scheduling type" UL / DL transmission.For UL transmission of the "second scheduling type", the SCS value configured in the UL BWP can be applied, and for DL ​​transmission, the SCS value configured in the DL BWP can be applied.

[0266]

[0267] [Example 3]

[0268] According to one embodiment of the present disclosure, the base station can always configure the SCS values ​​of the UL / DL subband and all UL / DL BWPs to be the same value for the terminal. The terminal may not expect that the SCS of the BWP configured by the base station is configured with a different value from the SCS of the UL / DL subband. If the SCS value is configured with a different value, the terminal may consider it as an error and ignore it.

[0269]

[0270] FIG. 18 illustrates a procedure for interpreting the configuration of SCS values ​​in a wireless communication system according to one embodiment of the present disclosure. FIG. 18 also illustrates an operating method of a terminal.

[0271] Referring to FIG. 18, in step S1801, the terminal receives a first SCS value and a second SCS value. In other words, the terminal may receive configuration information including the first SCS value and configuration information including the second SCS value. The first SCS value and the second SCS value may be received by upper layer signaling. Here, the first SCS value may include an SCS value for an SBFD symbol, and the second SCS value may include an SCS value for a non-SBFD symbol or an SCS value for BWP. The first SCS value and the second SCS value may be received by separate information elements. The configuration information including the first SCS value may be received as part of information regarding a pattern of an SBFD symbol, and the configuration information including the second SCS value may be received as part of information regarding BWP.

[0272] In step S1803, the terminal determines whether there is an error in the SCS configuration. This can be determined based on whether the first SCS value and the second SCS value are identical. For example, if the first SCS value and the second SCS value are different, the terminal can determine that there is an error in the SCS configuration. If there is no error in the SCS configuration, the terminal proceeds to step S1807.

[0273] If there is an error in the SCS configuration, in step S1805, the terminal ignores either the first SCS value or the second SCS value. That is, although the two SCS values ​​are different, the terminal decides to use either the first SCS value or the second SCS value in common. At this time, the decision rule can be defined in various ways. For example, according to a predefined priority, the terminal can decide to apply the first SCS value to the SBFD symbol area and the non-SBFD symbol area.

[0274] At step S1807, the terminal performs communication based on the SCS value. That is, the terminal can generate or interpret a signal based on the configured SCS value or the SCS value re-determined according to an error.

[0275] In one embodiment, the base station may always configure the SCS of the UL / DL subband and the SCS of the UL / DL BWP to be the same value for the UL / DL BWP configured to include the UL / DL subband. The terminal may not expect the SCS of the UL / DL subband and the SCS of the UL / DL BWP to be configured to be different values ​​for the UL / DL BWP configured to include the UL / DL subband from the base station, and if the terminal receives information configured to have different SCS values ​​from the base station, it may consider it an error and ignore it.

[0276] In addition, the base station may configure the SCS of the UL / DL subband and the SCS of the UL / DL BWP to be different values ​​for the UL / DL BWP that does not include the UL / DL subband. For the UL / DL BWP that does not include the UL / DL subband, the SCS of the UL / DL BWP may be configured to be a different value from the SCS of the UL / DL subband, and when performing transmission and / or reception in the UL / DL BWP, transmission and / or reception may be performed based on the SCS configured in the BWP.

[0277] In one embodiment, the base station may configure the SCS values ​​of the UL / DL subbands and the SCS values ​​of the UL / DL BWPs to be different values ​​for the terminal, in which case the terminal may ignore the SCS configuration of the UL / DL BWPs and assume application of the SCS configuration values ​​of the UL / DL subbands.

[0278] In one embodiment, the base station may provide the terminal with configuration information for the SCS of the UL / DL subband, but may not provide the terminal with configuration information for the SCS of the UL / DL BWP. In this case, the terminal may assume the SCS of the UL / DL BWP as the SCS configuration value of the UL / DL subband.

[0279]

[0280] [Example 4]

[0281] In one embodiment of the present disclosure, specific scheduling operations may be restricted based on SCS configuration information of UL / DL BWP and SCS configuration information of UL / DL subbands. The proposed scheduling operations are as follows.

[0282] Figure 19 illustrates a procedure for performing scheduling considering the type of symbol in a wireless communication system according to one embodiment of the present disclosure. Figure 19 illustrates a procedure performed by a base station. Figure 19 illustrates an operating method of the base station.

[0283] Referring to FIG. 19, in step S1901, the base station verifies the SCS configuration for each symbol type. Here, the SCS configuration can be verified based on at least one SCS value signaled to the terminal. Prior to this procedure, the base station can transmit configuration information including at least one SCS value, for example, at least one of a first SCS or a second SCS, to the terminal. Here, the first SCS value can include an SCS value for a first type of symbol, i.e., an SBFD symbol, and the second SCS value can include an SCS value for a second type of symbol, i.e., a non-SBFD symbol.

[0284] In step S1903, the base station performs scheduling considering the SCS configuration. According to one embodiment, when allocating resources scheduled through a single signaling, the base station may allocate resources so that they include only one type of symbol(s) of either SBFD symbols or non-SBFD symbols. In other words, the base station may perform scheduling so that the resources scheduled through a single signaling do not span the SBFD symbol region or the non-SBFD symbol region.

[0285] In step S1905, the base station transmits scheduling information. The base station transmits information signaling the scheduling result of step S1903. The signaling may include at least one of upper layer signaling or physical layer signaling. The scheduling information may indicate a fixed allocation (e.g., a configured grant (CG)) or dynamic allocation. Thereafter, although not illustrated in FIG. 19, the base station may transmit or receive a signal according to the scheduling.

[0286] As shown in Fig. 19, the scheduling of the base station may be restricted based on the SBFD symbol region. For example, if the SCS of the UL / DL BWP is configured with X kHz and the SCS of the UL / DL subband is configured with Y kHz, the X kHz SCS may be applied in the non-SBFD symbol, and the Y kHz SCS may be applied in the SBFD symbol. In this case, when scheduling UL / DL transmission, the base station may not perform scheduling across SBFD symbols and non-SBFD symbols configured with different SCSs. Accordingly, the terminal may not expect scheduling across SBFD symbols and non-SBFD symbols configured with different SCSs for UL / DL transmission.

[0287] If a terminal receives a control signal scheduling a specific UL / DL transmission across SBFD symbols and non-SBFD symbols composed of different SCSs, the terminal may consider the control signal as an error and ignore it. Alternatively, the terminal may determine that the scheduling is valid only for the UL / DL transmission existing in the earliest slot indicated by the scheduling. Alternatively, the terminal may determine that the scheduling is valid only for symbols of the same type as the symbol located at the very front indicated by the scheduling.

[0288]

[0289] In some embodiments, when assuming different SCS values ​​in SBFD and non-SBFD symbols, the base station and the terminal can perform communication based on the optimized SCS in each symbol. In addition, when the base station and the terminal perform transmission and / or reception in the UL / DL subband, there is an advantage in that other transmissions and / or receptions occurring in the UL / DL subband are not affected by performing transmission based on the cell-common SCS value configured in the UL / DL subband.

[0290]

[0291] The first embodiment, second embodiment, third embodiment, fourth embodiment, and detailed embodiments described above may be implemented in combination with each other. For example, based on the configuration information of the base station, it may be determined which operation to perform among the first embodiment, second embodiment, third embodiment, fourth embodiment, and detailed embodiments, and the terminal may control the operation based on the configuration information of the base station.

[0292]

[0293] The various embodiments described above can be similarly applied to other numerology configuration information (e.g., CP length) other than SCS.

[0294]

[0295] The operations of the method according to the present disclosure can be implemented as a computer-readable program or code on a computer-readable recording medium. A computer-readable recording medium includes any type of recording device that stores information readable by a computer system. Furthermore, a computer-readable recording medium can be distributed across network-connected computer systems, allowing the computer-readable program or code to be stored and executed in a distributed manner.

[0296] Additionally, the computer-readable recording medium may include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. The program instructions may include not only machine language codes produced by a compiler, but also high-level language codes that can be executed by a computer using an interpreter, etc.

[0297] While some aspects of the present disclosure have been described in the context of a device, they may also represent a description of 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 as 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 or more of the most significant method steps may be performed by such a device.

[0298] 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 the present disclosure. The field-programmable gate array may operate in conjunction with a microprocessor to perform one of the methods described in the present disclosure. In general, the methods are preferably performed by some hardware device.

[0299] Although the present disclosure has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and changes may be made to the present disclosure without departing from the spirit and scope of the present disclosure as set forth in the claims below.

Claims

1. In a method of operating a terminal in a wireless communication system, A step of receiving configuration information including position information of a symbol for at least one SBFD and a first SCS value; A step of receiving configuration information for a BWP including a second SCS value; A step of receiving signaling including scheduling information for PUSCH within the BWP; and A step of transmitting an uplink signal on the PUSCH based on the signaling, The signal comprises at least one of a first signal transmitted in a first type of symbol for the SBFD or a second signal transmitted in a second type of symbol that is not a symbol for the SBFD, A method wherein the signal is generated based on at least one of the first SCS value or the second SCS value.

2. In claim 1, The first signal is generated based on the first SCS value, A method wherein the second signal is generated based on the second SCS value.

3. In claim 1, A method wherein the signal is generated based on one of the first SCS value or the second SCS value.

4. In claim 3, A method in which the above one value is determined based on a predefined priority.

5. In claim 3, A method wherein the above one value is determined based on the characteristics of the service or traffic.

6. In claim 3, A method wherein the one value is determined by whether the PUSCH is scheduled across the first type of symbol and the second type of symbol.

7. In claim 1, A method wherein, when the PUSCH is scheduled across the first type of symbols and the second type of symbols, the first signal and the second signal are generated based on one of the first SCS value or the second SCS value.

8. In claim 1, A method wherein the above signal is generated based on an SCS value applied to the above signaling.

9. In claim 1, A method in which, if the first SCS value or the second SCS value is different from each other, only one of the first SCS value or the second SCS value is treated as valid.

10. In claim 1, A method in which the signaling is treated as invalid if the first SCS value or the second SCS value is different from each other.

11. In claim 1, A method in which the above PUSCH is scheduled so as not to span the first type of symbol and the second type of symbol.

12. In claim 1, A method wherein, when the PUSCH is scheduled across the first type of symbols and the second type of symbols, the signal is generated based on an SCS value corresponding to the fastest symbol among the symbols included in the PUSCH.

13. In claim 1, A method wherein, when the PUSCH is scheduled across the first type of symbols and the second type of symbols, the scheduling information further includes information indicating a guard interval located between symbols for the SBFD and symbols other than the symbols for the SBFD.

14. In a method of operating a base station in a wireless communication system, A step of transmitting configuration information including position information of a symbol for at least one SBFD and a first SCS value; A step of transmitting configuration information for a BWP including a second SCS value; A step of transmitting signaling including scheduling information for PUSCH within the BWP; and A step of receiving an uplink signal on the PUSCH based on the signaling, The signal comprises at least one of a first signal transmitted in a first type of symbol for the SBFD or a second signal transmitted in a second type of symbol that is not a symbol for the SBFD, A method wherein the signal is generated based on at least one of the first SCS value or the second SCS value.

15. In claim 14, A method in which the above PUSCH is scheduled so as not to span the first type of symbol and the second type of symbol.

16. In claim 14, A method wherein the first SCS value and the second SCS value are configured as the same value.

17. In a wireless communication system, at a terminal, At least one transmitter / receiver; at least one processor; and At least one memory operably connected to said at least one processor and storing instructions that, when executed by said processor, control said terminal to perform operations; The above actions are, A step of receiving configuration information including position information of a symbol for at least one SBFD and a first SCS value; A step of receiving configuration information for a BWP including a second SCS value; A step of receiving signaling including scheduling information for PUSCH within the BWP; and A step of transmitting an uplink signal on the PUSCH based on the signaling, The signal comprises at least one of a first signal transmitted in a first type of symbol for the SBFD or a second signal transmitted in a second type of symbol that is not a symbol for the SBFD, A terminal wherein the signal is generated based on at least one of the first SCS value or the second SCS value.

18. In a base station in a wireless communication system, At least one transmitter / receiver; at least one processor; and At least one memory operably connected to said at least one processor and storing instructions that, when executed by said processor, control said terminal to perform operations; The above actions are, A step of transmitting configuration information including position information of a symbol for at least one SBFD and a first SCS value; A step of transmitting configuration information for a BWP including a second SCS value; A step of transmitting signaling including scheduling information for PUSCH within the BWP; and A step of receiving an uplink signal on the PUSCH based on the signaling, The signal comprises at least one of a first signal transmitted in a first type of symbol for the SBFD or a second signal transmitted in a second type of symbol that is not a symbol for the SBFD, A base station, wherein the signal is generated based on at least one of the first SCS value or the second SCS value.

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