Method and apparatus for controlling uplink transmission power in SBFD subband

Abstract

Disclosed are a method and apparatus for controlling uplink transmission power in an SBFD subband. The method for a user equipment (UE) comprises the steps of: receiving, from a base station, first power control information for an uplink (UL) region configured in one or more non-subband full duplex (N-SBFD) symbols; receiving, from the base station, second power control information for a UL subband configured in one or more SBFD symbols; performing first uplink transmission to the base station by using first transmission power determined on the basis of the first power control information; and performing second uplink transmission to the base station by using second transmission power determined on the basis of the second power control information.

Description

Method and device for controlling uplink transmission power in SBFD subband

[0001] The present disclosure relates to improved communication technology, and more particularly, to a technology for controlling uplink transmission power in a subband full duplex (SBFD) subband.

[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, a communication network may support subband full duplex (SBFD) operation. In a communication network supporting SBFD operation, an uplink (UL) subband may be configured in a downlink (DL) section. A terminal may perform uplink transmission in a UL subband configured in the DL section and / or in UL resources other than SBFD resources. If the uplink transmission power in the UL subband and the uplink transmission power in the UL resources are controlled based on the same method, problems such as increased interference caused by uplink transmission and deterioration of reception performance of uplink transmission may occur. A method for controlling uplink transmission power to solve the above-described problems may be needed.

[0005] The purpose of the present disclosure to solve the above problems is to provide a method and device for controlling uplink transmission power in a subband full duplex (SBFD) subband.

[0006] According to embodiments of the present disclosure for achieving the above object, a method of a UE (user equipment) includes the steps of: receiving, from a base station, first power control information for an uplink (UL) region set in one or more non-subband full duplex (N-SBFD) symbols; receiving, from the base station, second power control information for a UL subband set in one or more SBFD symbols; performing a first uplink transmission to the base station using a first transmission power determined based on the first power control information; and performing a second uplink transmission to the base station using a second transmission power determined based on the second power control information.

[0007] The first power control information and the second power control information may be associated with the same transmission configuration indicator (TCI) state.

[0008] The first power control information may include information of a first alpha set, and the first transmission power may be determined based on a first alpha value selected within the first alpha set, and the second power control information may include information of a second alpha set, and the second transmission power may be determined based on a second alpha value selected within the second alpha set.

[0009] The first power control information may include a first update instruction of a first path loss RS (reference signal) resource, and the first transmission power may be determined based on a first path loss measured in the updated first path loss RS resource, and the second power control information may include a second update instruction of a second path loss RS resource, and the second transmission power may be determined based on a second path loss measured in the updated second path loss RS resource.

[0010] The first update instruction and the second update instruction may be included in a medium access control (MAC) control element (CE) received from the base station, or the first update instruction, the second update instruction, and a field indicating that the MAC CE includes the first update instruction and the second update instruction may be included in the MAC CE.

[0011] If the updated second path loss RS resource is invalid or if the second path loss is invalid, the second transmission power may be determined based on a path loss measured based on a path loss RS resource used for the most recent uplink transmission, a path loss measured based on a path loss RS resource set in a DL (downlink) subband other than the UL subband, or a path loss measured based on a default path loss RS resource preset by the base station.

[0012] The second power control information may include a power offset, and the second transmission power may be determined by applying the power offset to the first transmission power.

[0013] The method of the UE may further include the step of receiving a first transmit power control (TPC) command and a second TPC command from the base station, wherein the first transmit power may be determined by further considering the first TPC command, and the second transmit power may be determined by further considering the second TPC command.

[0014] Each of the first transmission power and the second transmission power can be determined based on a TPC accumulation method.

[0015] The method of the UE may further include the step of receiving a first TPC command and a power offset from the base station, wherein the first transmission power may be determined by further considering the first TPC command, and the second transmission power may be determined by further considering the first TPC command and the power offset.

[0016] The second uplink transmission may be a retransmission for the first uplink transmission, the second power control information may include information indicating that transmission power is determined based on a TPC accumulation method in different types of symbols, and the second transmission power may be determined by accumulating a first TPC command for the first transmission power.

[0017] When the first TCI state of the first uplink transmission is the same as the second TCI state of the second uplink transmission, the second transmission power can be determined by accumulating the first TPC command for the first transmission power.

[0018] According to embodiments of the present disclosure for achieving the above object, a method of a base station includes the steps of transmitting, to a user equipment (UE), first power control information for an uplink (UL) region configured in one or more non-subband full duplex (N-SBFD) symbols; transmitting, to the UE, second power control information for a UL subband configured in one or more SBFD symbols; receiving, from the UE, a first uplink transmission based on a first transmission power determined based on the first power control information; and receiving, from the UE, a second uplink transmission based on a second transmission power determined based on the second power control information.

[0019] The first power control information and the second power control information may be associated with the same transmission configuration indicator (TCI) state.

[0020] The first power control information may include information of a first alpha set, and the first transmission power may be determined based on a first alpha value selected within the first alpha set, and the second power control information may include information of a second alpha set, and the second transmission power may be determined based on a second alpha value selected within the second alpha set.

[0021] The first power control information may include a first update instruction of a first path loss RS (reference signal) resource, and the first transmission power may be determined based on a first path loss measured in the updated first path loss RS resource, and the second power control information may include a second update instruction of a second path loss RS resource, and the second transmission power may be determined based on a second path loss measured in the updated second path loss RS resource.

[0022] If the updated second path loss RS resource is invalid or if the second path loss is invalid, the second transmission power may be determined based on a path loss measured based on a path loss RS resource used for the most recent uplink transmission, a path loss measured based on a path loss RS resource set in a DL (downlink) subband other than the UL subband, or a path loss measured based on a default path loss RS resource preset by the base station.

[0023] The method of the base station may further include the step of transmitting a first transmit power control (TPC) command and a second TPC command to the UE, wherein the first transmit power may be determined by further considering the first TPC command, and the second transmit power may be determined by further considering the second TPC command.

[0024] The method of the base station may further include the step of transmitting a first TPC command and a power offset to the UE, wherein the first transmission power may be determined by further considering the first TPC command, and the second transmission power may be determined by further considering the first TPC command and the power offset.

[0025] The second uplink transmission may be a retransmission for the first uplink transmission, the second power control information may include information indicating that transmission power is determined based on a TPC accumulation method in different types of symbols, and the second transmission power may be determined by accumulating a first TPC command for the first transmission power.

[0026] According to the present disclosure, in consideration of interference caused by uplink transmission and / or reception performance of uplink transmission, a terminal can independently determine (e.g., calculate, control) uplink transmission power in an uplink (UL) subband (e.g., a subband full duplex (SBFD) resource) and uplink transmission power in an UL resource (e.g., an N-SBFD resource), and perform uplink transmission in the UL subband and uplink transmission in the UL resource based on the independently determined uplink transmission power. The base station can transmit information for independently determining uplink transmission power in the UL subband and the UL resource to the terminal through signaling. Based on the above-described operations, interference caused by uplink transmission can be reduced, and reception performance of uplink transmission can be improved. Accordingly, performance of a communication system can be improved.

[0027] Figure 1 is a conceptual diagram illustrating embodiments of a communication system.

[0028] Figure 2 is a block diagram illustrating embodiments of communication nodes constituting a communication system.

[0029] Figure 3 is a block diagram illustrating embodiments of communication nodes that perform communication.

[0030] Figure 4a is a block diagram illustrating embodiments of a transmission path.

[0031] Figure 4b is a block diagram illustrating embodiments of a receiving path.

[0032] Figure 5 is a conceptual diagram illustrating embodiments of system frames in a communication system.

[0033] Figure 6 is a conceptual diagram illustrating embodiments of subframes in a communication system.

[0034] Figure 7 is a conceptual diagram illustrating embodiments of slots in a communication system.

[0035] Figure 8 is a conceptual diagram illustrating embodiments of time-frequency resources in a communication system.

[0036] Figure 9 is a conceptual diagram illustrating the timing of applying an update to the path loss RS.

[0037] Figure 10 is a flowchart illustrating embodiments of an uplink transmission method.

[0038] 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.

[0039] 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.

[0040] 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.”

[0041] 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.”

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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 a radio resource control (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)).

[0049] 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, “signal and / or channel” may mean a signal, a channel, or “signal and channel,” and “signal” may be used to mean “signal and / or channel.” In the present disclosure, time and time point may be used interchangeably. Time may be interpreted as either time or time point depending on the context, and time point may be interpreted as either time or time point depending on the context.

[0050] In the present disclosure, a phrase including “if (e.g., when ~)” can be expressed as a phrase including “based on (e.g., based on ~)” or a phrase including “in response to (e.g., in response to ~)”. In other words, a phrase including “if ~)” can be interpreted as being identical or similar to a phrase including “based on” or a phrase including “in response to”.

[0051] The communication network to which the embodiment is applied is not limited to what is described below, and the embodiment may be applied to various communication networks (e.g., 4G communication networks, 5G communication networks, and / or 6G communication networks). Here, the communication network may be used in the same sense as the communication system.

[0052] Figure 1 is a conceptual diagram illustrating embodiments of a communication system.

[0053] 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.

[0054] 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.

[0055] Figure 2 is a block diagram illustrating embodiments of communication nodes constituting a communication system.

[0056] Referring to FIG. 2, a communication node (200) may include at least one processor (210), a memory (220), and a transmission / reception device (230) that is connected to a network and performs communication. In addition, the communication node (200) may further include an input interface device (240), an output interface device (250), a storage device (260), etc. Each component included in the communication node (200) may be connected by a bus (270) and communicate with each other.

[0057] The processor (210) can execute program commands stored in at least one of the memory (220) and the storage device (260). The processor (210) may refer to a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor in which the methods according to embodiments of the present disclosure are performed. Each of the memory (220) and the storage device (260) may be configured with at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory (220) may be configured with at least one of a read-only memory (ROM) and a random access memory (RAM).

[0058] 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).

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] Meanwhile, communication nodes performing communication in a communication network may be configured as follows. The communication node illustrated in Fig. 3 may be a specific embodiment of the communication node illustrated in Fig. 2.

[0065] Figure 3 is a block diagram illustrating embodiments of communication nodes that perform communication.

[0066] Referring to FIG. 3, each of the first communication node (300a) and the second communication node (300b) may be a base station or a UE. The first communication node (300a) may transmit a signal to the second communication node (300b). The transmission processor (311) included in the first communication node (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 configured by RRC signaling), MAC control information (e.g., MAC CE), or PHY control information (e.g., DCI, SCI).

[0067] 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.

[0068] 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 (314a to 314t).

[0069] Signals transmitted by the first communication node (300a) may be received by antennas (364a to 364r) of the second communication node (300b). Signals received by the antennas (364a to 364r) may be provided to demodulators (DEMODs) included in 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).

[0070] Meanwhile, the second communication node (300b) can transmit a signal to the first communication node (300a). The transmitting processor (368) included in the second communication node (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).

[0071] 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).

[0072] Signals transmitted by the second communication node (300b) may be received by the antennas (314a to 314r) of the first communication node (300a). The signals received by the antennas (314a to 314r) may be provided to 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).

[0073] Memories (315 and 365) can store data, control information, and / or program code. Scheduler (317) can perform scheduling operations for communication. The 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.

[0074] FIG. 4a is a block diagram illustrating embodiments of a transmission path, and FIG. 4b is a block diagram illustrating embodiments of a reception path.

[0075] 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 (414), 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.

[0076] 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.

[0077] 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 (414) can convert the output (e.g., parallel signals) of the N IFFT block (413) into a serial signal to generate a serial signal.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] Figure 5 is a conceptual diagram illustrating embodiments of a system frame in a communication system.

[0082] Referring to FIG. 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.

[0083] 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."

[0084] Figure 6 is a conceptual diagram illustrating embodiments of subframes in a communication system.

[0085] Referring to FIG. 6, one subframe may include n slots, where n may be a natural number. Accordingly, one subframe may be composed of one or more slots.

[0086] Figure 7 is a conceptual diagram illustrating embodiments of slots in a communication system.

[0087] Referring to Figure 7, a single slot may include one or more symbols. A single slot illustrated in Figure 7 may include 14 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.

[0088] 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 a first 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.

[0089]

[0090] 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.

[0091] 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.

[0092] A symbol may be configured as a downlink (DL) symbol, a flexible (FL) symbol, or an uplink (UL) symbol. A slot consisting solely of DL symbols may be referred to as a "DL slot," a slot consisting solely of FL symbols may be referred to as an "FL slot," and a slot consisting solely of UL symbols may be referred to as a "UL slot."

[0093] 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.

[0094] 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, a control channel may mean a PDCCH, a PUCCH, or a PSCCH, and a data channel may mean a PDSCH, a PUSCH, or a PSSCH.

[0095] Figure 8 is a conceptual diagram illustrating embodiments of time-frequency resources in a communication system.

[0096] 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 may be defined as a "RE (resource element)". Resources consisting of one OFDM symbol in the time domain and K subcarriers in the frequency domain may be defined as a "REG (resource element group)". A REG may include K REs. A REG may be used as a basic unit for resource allocation in the frequency domain. K may be a natural number. For example, K may be 12. N may be a natural number. In the slot illustrated in FIG. 7, N may be 14. N OFDM symbols may be used as a basic unit for resource allocation in the time domain.

[0097] 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.

[0098] 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 the MCS (modulation coding scheme) used for transmitting and 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.

[0099] 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.

[0100] CORESET information may include PDCCH DMRS (demodulation reference signal) information, PDCCH precoding information, PDCCH occasion information, etc. The PDCCH DMRS may be a DMRS used to demodulate the PDCCH. The PDCCH occasion may be a region where the PDCCH can exist. That is, the PDCCH occasion may be a region where DCI can be transmitted. The PDCCH occasion may be referred to as a PDCCH candidate. The PDCCH occasion information may include time resource information and frequency resource information of the PDCCH occasion. In the time domain, the length of the PDCCH occasion may be indicated in symbol units. In the frequency domain, the size of the PDCCH occasion may be indicated in RB units (e.g., in PRB (physical resource block) units or CRB (common resource block) units).

[0101] 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.

[0102] 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).

[0103] Meanwhile, communication systems (e.g., NR communication systems, 5G communication systems, 6G communication systems) can support usage scenarios such as eMBB (enhanced Mobile Broadband), URLLC (Ultra Reliable Low Latency Communication), and mMTC (massive Machine Type Communication). Communication systems (e.g., communication networks) can support SBFD (subband full duplex) operation.

[0104] A communication system may support TDD (time division duplexing). In a communication system supporting TDD (hereinafter referred to as a "TDD communication system"), downlink (DL) symbol(s) and uplink (UL) symbol(s) may be configured in different time resources within a single carrier. DL and UL symbols may be associated with coverage and / or latency. In a TDD communication system, a base station can utilize resources more efficiently than in a frequency division duplexing (FDD) scheme by considering various use cases. Resource scheduling operations of the base station may be important in a TDD communication system. For improved TDD operation, SBFD operation (e.g., SBFD operation) may be supported. When SBFD operation is supported in a TDD communication system, DL communication (e.g., transmission and reception of DL signals) and UL communication (e.g., transmission and reception of UL signals) may be performed simultaneously within the same time resource. For example, within the same time resource, some subbands may be DL subbands, while other subbands may be UL subbands and / or FL subbands. In the present disclosure, a DL signal may be interpreted as a DL signal, a DL channel, or "a DL signal and a DL channel" depending on the context. In the present disclosure, a UL signal may be interpreted as a UL signal, an UL channel, or "a UL signal and a UL channel" depending on the context.

[0105] A symbol to which the SBFD operation is applied may be referred to as an SBFD symbol. A symbol to which the SBFD operation is not applied may be referred to as an N(non)-SBFD symbol. An N-SBFD symbol may be a DL symbol, an UL symbol, or an FL symbol. In an SBFD symbol, a terminal may perform DL communication and UL communication. In other words, in an SBFD symbol, a terminal may perform full duplex operation. A base station may assume that DL communication and UL communication are possible in an SBFD symbol. In an N-SBFD symbol, a terminal may perform one of DL communication and UL communication. In other words, in an N-SBFD symbol, a terminal may perform half duplex operation. An SBFD symbol may be a symbol including a subband on which an SBFD operation is performed. A subband for SBFD may be referred to or interpreted as a UL subband. A UL subband may be present (e.g., configured) within a symbol in which a synchronization signal block (SSB) is transmitted.

[0106] Resources (e.g., time resources and / or frequency resources) for SBFD operation can be configured in a semi-static manner. In other words, the configuration for SBFD resources can be a semi-static configuration. "The SBFD resource configuration being a semi-static configuration" can mean "the SBFD resource is configured by semi-static signaling (e.g., system information, RRC message)." In the present disclosure, SBFD resources can mean time resources and / or frequency resources for SBFD operation. A UL subband for SBFD can be an SBFD resource. Alternatively, SBFD resources can be configured in a dynamic manner. "The SBFD resource configuration being a dynamic configuration" can mean "the SBFD resource is configured by dynamic signaling (e.g., MAC CE, DCI, SCI)."

[0107] SBFD resources (e.g., UL subbands, SBFD symbols) can be configured within DL resources and / or FL (flexible) resources configured by TDD-UL-DL configuration common information (e.g., TDD-UL-DL-configCommon). The transition point from an N-SBFD symbol to an SBFD symbol in the time domain can be limited to one. The transition point from an SBFD symbol to an N-SBFD symbol in the time domain can be limited to one. With respect to resource configuration of a subband for SBFD, it may be desirable for a terminal to recognize resource configuration information of a subband for SBFD in advance.

[0108] The TDD-UL-DL configuration common information can be used to configure a pattern (e.g., TDD-UL-DL-Pattern) for DL ​​resources and / or UL resources in the time domain of a TDD communication system. The pattern for DL ​​resources and / or UL resources can be referred to as a UL / DL pattern. The UL / DL pattern can be changed according to the environment of the communication system (e.g., TDD communication system). Up to two UL / DL patterns can be configured for a terminal. The TDD-UL-DL configuration common information can be a cell-specific parameter (e.g., cell-specific configuration information). The base station can change the configuration (e.g., transmission direction, type) for symbol(s) for each terminal based on a specific slot within a preset UL / DL pattern. A slot for which the symbol configuration (e.g., symbol direction, symbol type) can be changed can be a slot configured as an FL resource by the TDD-UL-DL configuration common information. The symbol direction (e.g., symbol transmission direction) and / or symbol type may be DL, UL, or FL. The RRC signaling used to change the configuration of an FL slot (e.g., FL resource) may be TDD-UL-DL configuration dedicated information (e.g., TDD-UL-DL-ConfigDedicated). Table 2 may be TDD-UL-DL configuration common information, and Tables 3 and 4 may be TDD-UL-DL configuration dedicated information.

[0109]

[0110]

[0111]

[0112] The UL / DL pattern configured by the TDD-UL-DL configuration common information can be repeated according to a specific period (e.g., dl-UL-TransmissionPeriodicity). In the time period to which the UL / DL pattern is applied, the front region can be configured as a DL resource. In the time period to which the UL / DL pattern is applied, the rear region can be configured as a UL resource. In the time period to which the UL / DL pattern is applied, resources that are not configured as DL resources or UL resources can be FL resources. The period of the UL / DL pattern can vary depending on the reference numerology. A guard time (e.g., a guard gap) may be required for switching (e.g., transition) from a DL resource (e.g., a DL symbol / slot) to a UL resource (e.g., a UL symbol / slot). Since the propagation delay of DL signals causes interference to UL resources, a guard time may be required for switching from DL resources to UL resources. A separate guard time may not be required for switching from UL resources to DL resources. Since UL signals are transmitted based on the timing advance command (TAC) indicated by the base station, a guard time may not be required for switching from UL resources to DL resources.

[0113] TDD-UL-DL configuration common information (e.g., TDD-UL-DL-ConfigCommon) may be referred to as "TDD common" or "TDD common information". TDD-UL-DL configuration dedicated information (e.g., TDD-UL-DL-ConfigDedicated) may be referred to as "TDD dedicated" or "TDD dedicated information". A UL subband may mean a subband for SBFD. DL symbol(s) and / or DL ​​slot(s) may be referred to as a DL region (or DL ​​resource). UL symbol(s) and / or UL slot(s) may be referred to as a UL region (or UL resource). FL symbol(s) and / or FL slot(s) may be referred to as an FL region (or FL resource). A terminal that supports (e.g., recognizes) the SBFD operation may be referred to as an SBFD terminal or SBFD UE. A terminal that does not support (e.g., is not aware of) SBFD operation may be referred to as an N(non)-SBFD terminal or N-SBFD UE. An N-SBFD terminal may be a legacy terminal (e.g., a legacy UE). In the present disclosure, a terminal may be interpreted as an SBFD terminal and / or an N-SBFD terminal depending on the context. Legacy configuration (e.g., legacy information, legacy configuration information) may be information for an N-SBFD terminal.

[0114] Transmissions (e.g., UL transmissions) in the UL subband may interfere with communications in the DL subband. Transmission power configuration (e.g., transmission power control, transmission power determination) in the UL subband may be distinguished from transmission power configuration in the UL band (e.g., the UL band configured in N-SBFD symbols). Transmission power configuration in the SBFD symbols and transmission power configuration in the N-SBFD symbols may be performed independently. In the present disclosure, the UL band may be configured in the N-SBFD symbols, and the UL band may be distinguished from the UL subband configured in the SBFD symbols.

[0115] open loop power control

[0116] Resource information of a path loss RS (reference signal) required for setting the transmission power of a channel / signal (e.g., PUSCH, PUCCH, SRS) in an HD (half duplex) uplink can be updated by a MAC CE. An HD uplink may refer to an uplink that supports HD. A path loss RS may refer to an RS used for measuring path loss. A path loss RS may include an SSB, a CSI-RS, etc. In the present disclosure, an RS may be interpreted as a path loss RS or an RS for another purpose depending on the context. A channel / signal may be interpreted as a channel, a signal, or "a channel and a signal" depending on the context.

[0117] The terminal can receive a MAC CE including resource information (e.g., updated resource information) of a path loss RS from a base station, and transmit a HARQ (hybrid automatic repeat request) response (e.g., HARQ-ACK (acknowledgment)) to the MAC CE to the base station. The terminal can receive a MAC CE for a preset time (e.g., from a slot in which the HARQ response to the MAC CE is transmitted). ) can perform a measurement on the path loss RS in the path loss RS resource set in the first slot after the path loss RS, and determine the transmission power (e.g., uplink transmission power) based on the measurement result of the path loss RS. μ can be a subcarrier spacing (SCS) applied to a PUSCH or PUCCH on which a HARQ response for a MAC CE is transmitted. may indicate the number of slots included in the subframe to which μ is applied. can be set to the terminal by RRC signaling of the base station. can be introduced to resolve DL / UL timing mismatch in NTN (Non-Terrestrial Network).

[0118] The path loss RS can be set for each transmission configuration indicator (TCI) state. Alternatively, the path loss RS can be set universally regardless of the TCI state. For example, the base station can transmit a UE-specific configuration, including the path loss RS, to the terminal.

[0119] - Proposal #1

[0120] The configuration and / or update of path loss RS resources for uplink transmission in an SBFD symbol and uplink transmission in an N-SBFD symbol can be performed independently. Transmission in an SBFD symbol can be performed within a TDD DL region. The TDD DL region can mean a DL region configured based on a TDD scheme. Based on the TDD configuration, the DL region (e.g., DL resources) can be separated in the time domain from UL resources existing after the DL region. Therefore, beam configuration and / or path loss RS configuration for each of the SBFD symbol and the N-SBFD symbol can be performed independently.

[0121] The base station can configure a common RS resource for path loss estimation that can be specifically used by the UE regardless of the TCI status. The common RS resource for path loss estimation may be referred to as a common path loss RS resource. The base station can configure a common path loss RS resource for the UL region and a common path loss RS resource for the UL subband. The UL region may be configured in N-SBFD resources, and the UL region may be distinguished from a UL subband configured in SBFD resources. The UL region may be referred to as a UL resource. The base station can transmit common path loss RS resource information for the UL region and common path loss RS resource information for the UL subband to the UE through signaling (e.g., RRC signaling). The UE can receive common path loss RS resource information for the UL region and common path loss RS resource information for the UL subband from the base station.

[0122] The base station can update the common path loss RS resource configured by RRC signaling using MAC CE. For example, the base station can transmit update information on the common path loss RS resource for the UL region and update information on the common path loss RS resource for the UL subband to the terminal via MAC CE. The terminal can receive update information on the common path loss RS resource for the UL region and update information on the common path loss RS resource for the UL subband from the base station. The terminal can update the common path loss RS resource for the UL region configured by RRC signaling based on the update information. The terminal can update the common path loss RS resource for the UL subband configured by RRC signaling based on the update information.

[0123] The base station can transmit information on path loss RS resources for each TCI state to the terminal through signaling in the UL region and each UL subband. For example, the base station can configure a path loss RS resource set (e.g., {SSB index, CSI-RS index}) associated with the TCI state in the UL region to the terminal through signaling. The base station can configure a path loss RS resource set (e.g., {SSB index, CSI-RS index}) associated with the TCI state in the UL subband to the terminal through signaling. The terminal can receive information on a path loss RS resource set (e.g., {SSB index, CSI-RS index}) associated with the TCI state in the UL region and information on a path loss RS resource set (e.g., {SSB index, CSI-RS index}) associated with the TCI state in the UL subband from the base station. The terminal can measure a path loss RS based on the path loss RS resource set indicated by the base station in the UL region. The terminal can measure the path loss RS based on a set of path loss RS resources indicated by the base station in the UL subband.

[0124] The base station can independently configure parameter(s) related to open-loop power control (e.g., alpha set) and / or parameter(s) related to closed-loop power control in addition to path loss RS to the terminal for each UL region and UL subband. The existing alpha set configured for power control of uplink channels / signals (e.g., PUSCH, PUCCH, SRS) can be used for N-SBFD symbols (e.g., UL region). The base station can configure a separate alpha set for power control of uplink channels / signals in UL subbands (e.g., SBFD symbols) and can configure information about the separate alpha set to the terminal through signaling. The alpha set applied in the N-SBFD symbol can be referred to as a legacy alpha set, and the alpha set applied in the SBFD symbol can be referred to as an additional alpha set. The terminal may determine the uplink transmission power based on a legacy alpha set (e.g., an alpha value selected from the legacy alpha set) in the UL domain, and the terminal may determine the uplink transmission power based on an additional alpha set (e.g., an alpha value selected from the additional alpha set) in the UL subband. The alpha value is expressed in Equation 1 and / or Equation 2 below. , in the mathematical formula 5 below etc. The alpha value can be used to determine the value of any parameter in Equation 3 and / or Equation 4 below.

[0125] Transmit power control in SBFD and N-SBFD symbols may be performed based on different path loss RSs. In this case, new path loss RS update method(s) may be required. Path loss RS update may mean an update to the path loss RS resource. If "a path loss RS update (e.g., a path loss RS update in an N-SBFD symbol) is requested (e.g., indicated) by the MAC CE" and / or "frequent updates to the path loss RS are not required," the base station may instruct (e.g., configure) the terminal to update the path loss RS in the SBFD symbol using RRC signaling. The terminal may update the path loss RS in the SBFD symbol based on the RRC signaling of the base station. Alternatively, it may be required for the base station to dynamically update the path loss RS in the SBFD symbol. The base station may instruct (e.g., configure) the terminal to update the path loss RS in the SBFD symbol using DCI. The terminal can update the path loss RS in the SBFD symbol based on the DCI received from the base station.

[0126] Alternatively, the path loss RS update in the N-SBFD symbol and the path loss RS update in the SBFD symbol may be indicated by the MAC CE. For example, one MAC CE may include an update instruction for the path loss RS in the N-SBFD symbol and an update instruction for the path loss RS in the SBFD symbol. In this case, a method may be needed to distinguish between the update instruction for the path loss RS in the N-SBFD symbol and the update instruction for the path loss RS in the SBFD symbol within one MAC CE. For example, a detailed design of the MAC CE may be required to distinguish between the update instruction for the path loss RS in the N-SBFD symbol and the update instruction for the path loss RS in the SBFD symbol.

[0127] - Proposal #2

[0128] The base station can independently perform updates for the path loss RS for controlling (e.g., determining) the UL transmit power in the SBFD symbol and the N-SBFD symbol. One MAC CE can be used to indicate an update of the path loss RS in the N-SBFD symbol and / or to indicate an update of the path loss RS in the SBFD symbol. The base station can use an A field (e.g., any field having a size of 1 bit) in the MAC CE to indicate for which symbol among the SBFD symbol and the N-SBFD symbol the MAC CE indicates an update of the path loss RS. For example, an A field set to a first value (e.g., 0) can indicate that the MAC CE indicates an update of the path loss RS in the SBFD symbol. An A field set to a second value (e.g., 1) can indicate that the MAC CE indicates an update of the path loss RS in the N-SBFD symbol.

[0129] A MAC CE may include an update instruction for a path loss RS in an N-SBFD symbol and an update instruction for a path loss RS in an SBFD symbol. The base station may use a B field (e.g., any field having a size of 1 bit) in the MAC CE to indicate that the MAC CE indicates an update of a single path loss RS or multiple path loss RSs. For example, a B field set to a first value (e.g., 0) may indicate that the MAC CE includes an update instruction for a single path loss RS (e.g., a path loss RS in an SBFD symbol or a path loss RS in an N-SBFD symbol). A B field set to a second value (e.g., 1) may indicate that the MAC CE includes an update instruction for multiple path loss RSs (e.g., a path loss RS in an SBFD symbol and a path loss RS in an N-SBFD symbol).

[0130] When a MAC CE includes update instructions for multiple path loss RSs, the base station can use the C field (e.g., any field having a size of 1 bit) in the MAC CE to indicate that the update instruction for the path loss RS that exists earliest in the MAC CE is the update instruction for the path loss RS in the SBFD symbol or the update instruction for the path loss RS in the N-SBFD symbol. For example, the C field set to a first value (e.g., 0) can indicate that the update instruction for the path loss RS that exists earliest in the MAC CE is the update instruction for the path loss RS in the SBFD symbol. The C field set to a second value (e.g., 1) can indicate that the update instruction for the path loss RS that exists earliest in the MAC CE is the update instruction for the path loss RS in the N-SBFD symbol. Alternatively, without using the C field, the type of update indication of the path loss RS that exists first within the MAC CE (e.g., an update indication of the path loss RS in an SBFD symbol or an update indication of the path loss RS in an N-SBFD symbol) may be defined in the technical specification.

[0131] The above-described A field, B field, and C field can be used independently. For example, the MAC CE can further include one field among the A field, the B field, or the C field. Alternatively, a combination of two or more fields among the A field, the B field, and the C field can be used. For example, the MAC CE can include the B field and the C field.

[0132] A base station can transmit an update instruction for a path loss RS to a terminal via signaling. The terminal can receive an update instruction for the path loss RS from the base station. The terminal can measure the path loss RS after a preset time from the time of receiving the update instruction for the path loss RS, and determine (e.g., predict or calculate) the path loss based on the measurement result. The terminal can determine the uplink transmission power based on the path loss, and transmit an uplink channel / signal to the base station using the uplink transmission power.

[0133] The terminal transmits the PUSCH power (e.g., based on the mathematical expression 1 or 2 below). or ) can be determined. may mean the path loss determined based on the path loss RS. can indicate the RS index.

[0134]

[0135]

[0136] may indicate the maximum output power for the k-th indicated TCI-state or TCI-UL-state defined for the carrier (f) of the serving cell (c) in the PUSCH transmission occasion (i). can indicate the maximum output power for a carrier (f) of a serving cell (c) in a PUSCH transmission occasion (i). Is and It can be a parameter composed of the sum of . can indicate the bandwidth of PUSCH resource allocation. can be set in units of RB (resource block). may indicate an alpha (e.g., an alpha value) determined based on a value indicated by the base station. may indicate a delta (e.g., a delta value) determined based on a value indicated by the base station. can indicate the PUSCH power control adjustment state.

[0137] The terminal transmits the PUCCH power (e.g., based on the mathematical expression 3 or 4 below). or ) can be determined. may mean the path loss determined based on the path loss RS. can indicate the RS index.

[0138]

[0139]

[0140] may indicate the maximum output power for the k-th indicated TCI-state or TCI-UL-state defined for the carrier (f) of the serving cell (c) in the PUCCH transmission occasion (i). can indicate the maximum output power for a carrier (f) of a serving cell (c) in a PCSCH transmission occasion (i). Is and / or It can be a parameter composed of the sum of . can indicate the bandwidth of PUCCH resource allocation. can be set in units of RB. may be a delta (e.g., a delta value) determined based on the PUCCH format. can indicate a PUCCH transmission power adjustment component. can indicate the PUSCH power control adjustment state.

[0141] The terminal transmits the SRS power (e.g., based on the mathematical expression 5 below). ) can be determined. may mean the path loss determined based on the path loss RS. can indicate the RS index.

[0142]

[0143] can indicate the maximum output power for a carrier (f) of a serving cell (c) in an SRS transmission occasion (i). is the active UL BWP(b) and SRS resource set( ) is set for It could be. can indicate the SRS bandwidth. can be set in units of RB. is the active UL BWP(b) and SRS resource set( ) may be set for alpha (e.g., alpha value). may be a value for PUSCH power control adjustment status.

[0144] Figure 9 is a conceptual diagram illustrating the timing of applying an update to the path loss RS.

[0145] Referring to Fig. 9, in the DL region, the UL subband can be set from the first symbol or the symbol after the first symbol. Based on the slot / symbol setting in the TDD-based communication system, the DL region can be set before the UL region in the time domain. The UL subband can be set from the first symbol of the DL region. The terminal can transmit the HARQ response to the path loss RS update indication for a preset time (e.g., ) can use the updated path loss RS to determine the UL transmit power later. If the UL subband exists from the first symbol in the DL region (e.g., the first slot in the DL region), there may not be any path loss RS (e.g., path loss RS resource) available to determine the UL transmit power. The terminal may not be able to use the updated path loss RS to determine the UL transmit power in the UL region as well as the UL subband.

[0146] - Proposal #3

[0147] When a base station instructs (e.g., configures) a path loss RS update to a terminal and a configuration exists for a specific UL subband, the terminal may not be able to use the updated path loss RS (e.g., path loss RS resource). In other words, a preset time (e.g., ) even after the terminal may not be able to perform a channel estimation operation based on the updated path loss RS. In this case, the terminal may perform an operation according to one or a combination of multiple options below. In other words, if the updated path loss RS resource is invalid and / or the path loss measured in the updated path loss RS resource is invalid, the terminal may perform an operation according to at least one option below. The option(s) below may be applied to the UL subband. Or, if the measurement of the path loss RS is not possible due to a specific UL subband configuration, the option(s) below may be applied to both the UL subband and the UL region.

[0148] Option #1

[0149] Until the measurement of the indicated (e.g., configured) path loss RS (e.g., updated path loss RS) becomes valid, the terminal may determine the uplink transmission power by applying the measured path loss based on the path loss RS (e.g., path loss RS resource) used for the most recent uplink transmission (e.g., determination of the most recent uplink transmission power), and perform the uplink transmission using the determined uplink transmission power. Or, during the update period of the path loss RS (e.g., ) even after the path loss RS update instruction has been received, the terminal can determine the uplink transmission power by applying the path loss measured based on the path loss RS before receiving the path loss RS update instruction, and perform uplink transmission using the determined uplink transmission power. k may be the index of the slot (e.g., slot k) in which the HARQ response to the path loss RS update instruction is transmitted. k may be a natural number.

[0150] Option #2

[0151] Considering the above-described problem, constraints on the starting position of the UL subband can be specified. For example, it can be specified that no UL subband is configured in the interval from the first symbol of the first slot of the DL region to N symbols. N can be a natural number. The base station can signal to the terminal that no UL subband is configured in the interval from the first symbol of the first slot of the DL region to N symbols. Alternatively, it can be defined in the technical specification that no UL subband is configured in the interval from the first symbol of the first slot of the DL region to N symbols. The base station and / or the terminal can expect that no UL subband is configured in the interval from the first symbol of the first slot of the DL region to N symbols.

[0152] Option #3

[0153] A terminal may estimate (e.g., measure) a path loss based on a path loss RS existing within a section (e.g., a DL subband) excluding a UL subband in a DL domain, and may use the estimated path loss to determine an uplink transmission power in the UL subband. To support the above-described operation, the terminal may support the ability to estimate a path loss based on an RS (e.g., a path loss RS) within a DL subband and / or the ability to use the estimated path loss to determine an uplink transmission power in a UL subband.

[0154] Option #4

[0155] The base station can indicate a default path loss RS (e.g., a default path loss RS resource) to the terminal via signaling (e.g., RRC signaling, MAC CE signaling, and / or DCI signaling). Alternatively, the default path loss RS can be defined in a technical specification. The default path loss RS can be configured to the terminal periodically or aperiodically. If measurement of the updated path loss RS is not possible, the terminal can estimate (e.g., measure) the path loss based on the default path loss RS, and use the estimated path loss to determine the uplink transmit power in the UL subband.

[0156] - Proposal #4

[0157] The base station can transmit transmission power setting information for a legacy terminal and a power offset for an SBFD terminal to the terminal through signaling, taking signaling overhead into account. The legacy terminal may be an N-SBFD terminal. In other words, the legacy terminal may be a terminal that does not support SBFD operation. The power offset may be set considering interference. The SBFD terminal can receive transmission power setting information and the power offset from the base station. The SBFD terminal can determine the uplink transmission power based on the transmission power setting information. In other words, the SBFD terminal can determine the uplink transmission power based on the legacy method. The SBFD terminal can determine the transmission power for uplink transmission in the UL subband by applying the power offset to the determined uplink transmission power. The SBFD terminal can perform uplink transmission using the final transmission power in the UL subband.

[0158] closed loop power control

[0159] The base station and the terminal may be expected to independently perform power control operations in the SBFD symbol (e.g., UL subband) and the N-SBFD symbol (e.g., UL region). For independent transmission power control, the base station may transmit parameter(s) for transmission power control in the SBFD symbol as well as parameter(s) for transmission power control in the N-SBFD symbol. The parameter(s) for transmission power control in the N-SBFD symbol and the parameter(s) for transmission power control in the SBFD symbol may be independently set. The transmission operation of the parameter(s) for transmission power control in the N-SBFD symbol and / or the SBFD symbol may vary depending on the capability of the terminal. The terminal may transmit information indicating whether the terminal performs independent transmission power control to the base station.

[0160] Independent transmit power control may mean that transmit power control is performed independently in the UL subband and in the UL domain. If the terminal does not perform independent transmit power control, the base station may transmit to the terminal parameter(s) for transmit power control that are commonly applied in the UL subband and the UL domain. If the terminal performs independent transmit power control, the base station may transmit to the terminal parameter(s) for transmit power control in the UL subband and parameter(s) for transmit power control in the UL domain.

[0161] When closed-loop power control is applied, feedback from the base station may be required for the terminal to determine the transmission power. The transmission power may be determined based on the following proposal(s). Some or all of the parameters for open-loop power control may be used for closed-loop power control. The base station may transmit one or more parameters for closed-loop power control to the terminal via signaling. The terminal may receive one or more parameters for closed-loop power control from the base station, determine the transmission power based on the one or more parameters, and perform uplink transmission using the determined transmission power.

[0162] - Proposal #1

[0163] The base station may transmit a separate transmit power control (TPC) command to the terminal through signaling for independent transmission power allocation in the UL subband. DCI format 0_1 ​​may include scheduling information for the PUSCH in one cell. DCI format 3_0 may include scheduling information for the PUSCH in one cell or multiple cells. The base station may transmit to the terminal through signaling a TPC command for the transmit power in the SBFD symbol (e.g., the UL subband) and a TPC command for the transmit power in the N-SBFD symbol (e.g., the UL region) based on the following option(s).

[0164] Option #1

[0165] A base station can transmit a DCI including at least two TCI commands per cell (e.g., target cell) to a terminal. The at least two TCI commands can include a first TCI command for an N-SBFD symbol and a second TCI command for an SBFD symbol. The DCI can further include a UL grant (e.g., PUSCH scheduling information). The terminal can receive the DCI from the base station and check information included in the DCI. The terminal can determine a transmit power based on the first TPC command for uplink transmission in the N-SBFD symbol indicated by the UL grant, and perform uplink transmission using the determined transmit power. The terminal can determine a transmit power based on the second TPC command for uplink transmission in the SBFD symbol indicated by the UL grant, and perform uplink transmission using the determined transmit power.

[0166] A new DCI format can be defined to support the above-described operation. When one UL grant schedules multiple PUSCHs and multiple TPC commands are configured for the multiple PUSCHs, PUSCH scheduling information in the DCI format can be mapped one-to-one to the TPC command. PUSCH scheduling information that exists first in the DCI format can correspond to a TPC command that exists first in the DCI format, and the PUSCH scheduling information and the TPC command can be used for uplink transmission in an N-SBFD symbol. PUSCH scheduling information that exists later in the DCI format can correspond to a TPC command that exists later in the DCI format, and the PUSCH scheduling information and the TPC command can be used for uplink transmission in an SBFD symbol.

[0167] The terminal can check PUSCH scheduling information and TPC commands for uplink transmission in the N-SBFD symbol within the DCI format without a separate identifier. The terminal can check PUSCH scheduling information and TPC commands for uplink transmission in the SBFD symbol within the DCI format without a separate identifier. Alternatively, an index can be introduced, and a TPC command corresponding to the PUSCH scheduling information can be indicated based on the index.

[0168] Option #2

[0169] The existing DCI format may be maintained. The base station may transmit DCI including one TPC command per cell to the terminal. The base station may transmit offset information (e.g., power offset information) for the TPC command to the terminal through separate signaling (e.g., RRC signaling, MAC CE signaling, and / or DCI signaling). The TPC command may be used to determine the transmit power in an N-SBFD symbol (e.g., UL region). The offset information may be used to determine the transmit power in an SBFD symbol (e.g., UL subband). The offset information may be a relative value for the TPC command. In other words, the TPC command indicated by the DCI may be a TPC command used to determine the transmit power in an N-SBFD symbol. The offset information indicated by separate signaling may be a correction value for the TPC command, and the offset information may be a value used to determine the transmit power in an SBFD symbol.

[0170] When the DCI indicates uplink transmission in the N-SBFD symbol, the terminal can determine the transmission power based on the TPC command indicated by the DCI, and perform uplink transmission using the determined transmission power. When the DCI indicates uplink transmission in the SBFD symbol, the terminal can determine the transmission power based on the TPC command indicated by the DCI and offset information (e.g., an offset value) indicated by separate signaling, and perform uplink transmission using the determined transmission power. The use of the TPC command or “TPC command + offset information” for determining the uplink transmission power can be implicitly indicated to the terminal. The base station can set a plurality of offset values ​​for the terminal as many as the number of maximum cells (e.g., maximum uplink cells) supported by the terminal.

[0171] The base station can explicitly instruct the terminal through signaling that independent power control operations are performed for uplink transmission in the N-SBFD symbol and for uplink transmission in the SBFD symbol. Whether to perform independent power control operations for uplink transmission in the N-SBFD symbol and for uplink transmission in the SBFD symbol can be dynamically instructed. When the base station specifically instructs the terminal to perform independent power control operations in the N-SBFD symbol and the SBFD symbol, the terminal can ignore TPC commands for UL subbands and offset information (e.g., offset values) for the TPC commands received from the base station thereafter.

[0172] The terminal can determine the transmit power for the current transmission occasion based on the transmit power used in the previous transmission occasion (e.g., PUSCH transmission occasion). In other words, the terminal can determine the transmit power based on the TPC accumulation method. If independent power control operation is supported, the terminal can determine the transmit power based on the following suggestion(s).

[0173] - Proposal #2

[0174] When the TPC command for the SBFD symbol and the TPC command for the N-SBFD symbol are received independently, the terminal can determine the transmission power based on the TPC accumulation method in each of the SBFD symbol and the N-SBFD symbol. In other words, the terminal can independently (e.g., in parallel) operate the power control adjustment states for determining the uplink transmission power in the SBFD symbol and the uplink transmission power in the N-SBFD symbol.

[0175] - Proposal #3

[0176] Based on the characteristics of SBFD operation, uplink repetition transmission may be important. Scheduling of uplink transmissions in consecutive resources including SBFD symbols and N-SBFD symbols may be required. In this case, the UE may use the TPC command for uplink transmission in the previous SBFD symbol to determine the transmit power in the N-SBFD symbol. In other words, the TPC command for uplink transmission in the previous SBFD symbol may be accumulated, maintained, or inherited to determine the transmit power in the N-SBFD symbol. Alternatively, the UE may use the TPC command for uplink transmission in the previous N-SBFD symbol to determine the transmit power in the SBFD symbol. In other words, the TPC command for uplink transmission in the previous N-SBFD symbol may be accumulated, maintained, or inherited to determine the transmit power in the SBFD symbol.

[0177] A terminal can determine the transmit power based on a TPC accumulation scheme in different types of symbols (e.g., SBFD symbols, N-SBFD symbols). The above-described operation may be referred to as a cross-symbol TPC accumulation scheme. The terminal can transmit information indicating whether the cross-symbol TPC accumulation scheme is supported to the base station. The base station can determine whether the terminal supports the cross-symbol TPC accumulation scheme based on the information received from the terminal. The base station can transmit information indicating whether to perform the cross-symbol TPC accumulation scheme to the terminal through signaling (e.g., RRC signaling, MAC CE signaling, and / or DCI signaling). The terminal can determine whether to perform the cross-symbol TPC accumulation scheme based on the instruction from the base station. If the execution of the cross-symbol TPC accumulation scheme is indicated, the terminal can determine the transmit power in the current N-SBFD symbol (or the current SBFD symbol) based on the TPC command for the previous SBFD symbol (or the previous N-SBFD symbol). If cross-symbol TPC accumulation is not instructed, the terminal may determine the transmit power in the current SBFD symbol (or the current N-SBFD symbol) based on the TPC command for the previous SBFD symbol (or the previous N-SBFD symbol). In other words, the terminal may not consider the TPC command for the previous SBFD symbol (or the previous N-SBFD symbol) to determine the transmit power in the current N-SBFD symbol (or the current SBFD symbol).

[0178] - Proposal #4

[0179] A terminal may perform cross-symbol repetition transmission. Cross-symbol repetition transmission may mean repeated transmissions in consecutive resources that include different types of symbols (e.g., SBFD symbols, N-SBFD symbols). For example, the terminal may perform a first uplink transmission in SBFD symbol(s) and a second uplink transmission in N-SBFD symbol(s). The second uplink transmission may be a repetition of the first uplink transmission. Alternatively, the terminal may perform a first uplink transmission in N-SBFD symbol(s) and a second uplink transmission in SBFD symbol(s). The second uplink transmission may be a repetition of the first uplink transmission.

[0180] If a terminal performs cross-symbol repetition transmission and a Tx beam (e.g., TCI state) for the terminal does not change in the cross-symbol repetition transmission, the terminal can determine the transmission power based on a cross-symbol TPC accumulation scheme (e.g., Proposal #3 of Closed-Loop Power Control) and perform uplink transmission using the determined transmission power. In other words, if the TCI state for uplink transmission in an N-SBFD symbol is the same as the TCI state for uplink transmission in an SBFD symbol, the terminal can determine the transmission power based on the cross-symbol TPC accumulation scheme.

[0181] Figure 10 is a flowchart illustrating embodiments of an uplink transmission method.

[0182] Referring to FIG. 10, a base station may generate first power control information for a UL region configured in one or more N-SBFD symbols, and transmit the first power control information to a terminal via signaling (S1001). The terminal may receive the first power control information from the base station (S1001). The base station may generate second power control information for a UL subband configured in one or more SBFD symbols, and transmit the second power control information to the terminal via signaling (S1002). The terminal may receive the second power control information from the base station (S1002). The first power control information and the second power control information may be transmitted via the same message (e.g., an RRC message, MAC CE, DCI). Alternatively, the first power control information and the second power control information may be transmitted via different messages (e.g., an RRC message, MAC CE, and / or DCI). The first power control information and the second power control information may be associated with the same TCI state (e.g., the same integrated TCI state).

[0183] When open-loop power control is performed (e.g., supported), the first power control information and / or the second power control information may include information (e.g., path loss RS resources, an update instruction of path loss RS resources, a power offset, an alpha value) based on proposal #1, proposal #2, proposal #3, and / or proposal #4 for open-loop power control. When closed-loop power control is performed (e.g., supported), the first power control information and / or the second power control information may include information (e.g., TCI commands, a power offset, information indicating whether cross-symbol TPC accumulation is supported) based on proposal #1, proposal #2, proposal #3, and / or proposal #4 for closed-loop power control.

[0184] The terminal may determine the first transmission power based on the first power control information (S1003). In open-loop power control, the terminal may perform measurement for the path loss RS in the path loss RS resource or the updated path loss RS resource, and may determine the first transmission power based on the measurement result (e.g., path loss) for the path loss RS. In closed-loop power control, the terminal may determine the first transmission power based on the first TPC command. The terminal may determine the first transmission power based on a TPC accumulation scheme (e.g., cross-symbol TPC accumulation scheme). The first transmission power may be determined based on Equation 1, Equation 2, Equation 3, Equation 4, or Equation 5. The terminal may perform a first uplink transmission (e.g., PUSCH transmission, PUCCH transmission, SRS transmission) to the base station using the first transmission power (S1004). The base station can receive a first uplink transmission from the terminal based on the first transmission power determined based on the first power control information (S1004).

[0185] The terminal may determine the second transmission power based on the second power control information (S1005). In open-loop power control, the terminal may perform measurement for the path loss RS in the path loss RS resource or the updated path loss RS resource, and determine the second transmission power based on the measurement result (e.g., path loss) for the path loss RS. Alternatively, the terminal may determine the second transmission power by applying a power offset to the first transmission power. In closed-loop power control, the terminal may determine the second transmission power based on the second TPC command. Alternatively, the terminal may determine the second transmission power based on the first TPC command and the power offset. The terminal may determine the second transmission power based on a TPC accumulation scheme (e.g., a cross-symbol TPC accumulation scheme). The second transmission power may be determined based on Equation 1, Equation 2, Equation 3, Equation 4, or Equation 5. The terminal may perform a second uplink transmission (e.g., PUSCH transmission, PUCCH transmission, SRS transmission) to the base station using the second transmission power (S1006). The base station may receive the second uplink transmission from the terminal based on the second transmission power determined based on the second power control information (S1006).

[0186] When the first power control information and the second power control information are associated with the same TCI state (e.g., the same integrated TCI state), the first uplink transmission based on the first transmission power and the second uplink transmission based on the second transmission power can be performed according to the same TCI state (e.g., the same integrated TCI state). In other words, the terminal can perform the first uplink transmission and the second uplink transmission using the same beam.

[0187] How to set up SBFD resources

[0188] - Proposal #1

[0189] An SBFD resource (e.g., an SBFD symbol) may be configured (e.g., indicated) based on at least one of the following options:

[0190] Option #1

[0191] The base station can transmit start time information and end time information of an SBFD resource (e.g., an SBFD interval) to the terminal through signaling. The terminal can receive the start time information and the end time information from the base station, and identify the SBFD resource based on the start time information and the end time information. The start time information can include at least one of a start slot index, a start symbol index, or a start symbol index in the start slot. The end time information can include at least one of an end slot index, an end symbol index, or an end symbol index in the end slot. Alternatively, the base station can transmit start time information and duration information of an SBFD resource (e.g., an SBFD interval) to the terminal through signaling. The terminal can receive the start time information and the duration information from the base station, and identify the SBFD resource based on the start time information and the duration information. The duration information may be information set in units of symbols and / or slots.

[0192] Option #2

[0193] A base station can transmit a start and length indicator value (SLIV) for an SBFD resource (e.g., an SBFD interval) to a terminal via signaling. The SLIV can indicate the start symbol and duration of the SBFD resource. The terminal can receive the SLIV from the base station and identify the SBFD resource based on the SLIV. The duration indicated by the SLIV can be set in units of symbols and / or slots.

[0194] Option #3

[0195] The base station can configure N-SBFD resources (e.g., N-SBFD symbols) for the terminal, and resources in the resource region excluding the N-SBFD resources can be SBFD resources (e.g., SBFD symbols). The terminal can receive configuration information of the N-SBFD resources from the base station, confirm the N-SBFD resources based on the configuration information, and determine resources excluding the N-SBFD resources in the resource region as SBFD resources. The N-SBFD resources can be configured in the DL region and / or the FL (flexible) region configured by the TDD-UL-DL-pattern.

[0196] - Proposal #2

[0197] In the frequency domain, UL subbands can be configured (e.g., indicated) based on at least one of the following options:

[0198] Option #1

[0199] Multiple resource indicator values ​​(RIVs) may be used to indicate a UL subband in the frequency domain. When a UL subband is located in the middle of a DL BWP, a first RIV indicating the UL subband, a second RIV indicating a DL subband configured in an upper frequency band of the UL subband, and a third RIV indicating a DL subband configured in a lower frequency band of the UL subband may be used. In other words, when a UL subband is located in the middle of a DL BWP, three RIVs may be required to indicate the UL subband and / or the DL subband. A base station may transmit the three RIVs to a terminal through signaling. The terminal may receive the three RIVs from the base station and, based on the three RIVs, determine the positions of the UL subband and the DL subband in the frequency domain. When three RIVs are indicated, the terminal may determine that the UL subband is configured in the middle of the DL BWP.

[0200] When a UL subband exists at one end of a DL BWP, a first RIV indicating the UL subband and a second RIV indicating a DL subband configured in an upper frequency band (or lower frequency band) of the UL subband may be used. In other words, when a UL subband exists at one end of a DL BWP, two RIVs may be required to indicate the UL subband and / or the DL subband. The base station may transmit the two RIVs to the terminal through signaling. The terminal may receive the two RIVs from the base station and identify the positions of the UL subband and the DL subband in the frequency domain based on the two RIVs. When two RIVs are indicated, the terminal may determine that the UL subband is configured at one end of the DL BWP.

[0201] Option #2

[0202] In the frequency domain, one RIV indicating a UL subband and configuration information (e.g., size information, position information) of one or more DL subbands may be used. When a UL subband exists in the middle of a DL BWP, an RIV indicating the UL subband, configuration information (e.g., a lowest RB (resource block) index, a start RB index) of a DL subband configured in an upper frequency band of the UL subband, and configuration information (e.g., a highest RB index, an end RB index) of a DL subband configured in a lower frequency band of the UL subband may be used. The base station may transmit one RIV and configuration information of each of two DL subbands to the terminal through signaling. The terminal can receive configuration information of one RIV and two DL subbands from the base station, and can identify the location of the UL subband in the frequency domain based on one RIV, and can identify the location of the DL subband based on the configuration information of each of the two DL subbands. A guard band can be set between the UL subband and the lowest RB, and a guard band can be set between the UL subband and the highest RB.

[0203] When a UL subband exists at one end of a DL BWP, an RIV indicating the UL subband and configuration information of a DL subband configured in an upper frequency band (or lower frequency band) of the UL subband (e.g., a lowest RB index (e.g., a start RB index) or a highest RB index (e.g., an end RB index)) may be used. The base station may transmit configuration information of one RIV and one DL subband to the terminal through signaling. The terminal may receive configuration information of one RIV and one DL subband from the base station, and may identify a location of the UL subband in the frequency domain based on one RIV, and may identify a location of the DL subband based on the configuration information of one DL subband. A guard band may be configured between the UL subband and the lowest RB, and a guard band may be configured between the UL subband and the highest RB.

[0204] Option #3

[0205] When a UL subband exists in the middle of a DL BWP and two DL subbands are symmetrically configured in the frequency domain, one RIV indicating the UL subband in the frequency domain and one configuration information (e.g., size information, location information) indicating the two DL subbands can be used. The base station can transmit one RIV and one configuration information (e.g., a start RB index or an end RB index) for the two DL subbands to the terminal through signaling. The terminal can receive one RIV and one configuration information for the two DL subbands from the base station, and can identify the location of the UL subband in the frequency domain based on the one RIV. When one configuration information for two DL subbands indicates a start RB index, the terminal can identify a DL subband configured in an upper frequency band of a UL subband based on the start RB index, determine an end RB index based on a symmetrical relationship between the start RB index and the two subbands, and identify a DL subband configured in a lower frequency band of the UL subband based on the end RB index. When one configuration information for two DL subbands indicates an end RB index, the terminal can identify a DL subband configured in a lower frequency band of the UL subband based on the end RB index, determine a start RB index based on a symmetrical relationship between the end RB index and the two subbands, and identify a DL subband configured in an upper frequency band of the UL subband based on the start RB index.

[0206] - Proposal #3

[0207] UL usable PRBs can be configured in SBFD symbol(s) in the time domain. UL usable PRBs can be overlapping frequency resource(s) between UL subbands that are configured cell-specifically in the frequency domain and active UL BWPs that are configured for the UE. DL usable PRBs can be configured in SBFD symbol(s) in the time domain. DL usable PRBs can be overlapping frequency resource(s) between DL subbands that are configured cell-specifically in the frequency domain and active DL BWPs that are configured for the UE.

[0208] - Proposal #4

[0209] The terminal may not expect transmission or reception for a channel configured across the SBFD symbol and N-SBFD symbols within a slot. If PUSCH repetition type B is indicated, the terminal may expect transmission for the PUSCH configured across the SBFD symbol and N-SBFD symbols within the slot. PUSCH repetition type B may mean repeated transmission of the PUSCH within the slot. If certain conditions are satisfied (e.g., the numerals are the same), the terminal may expect transmission or reception for a channel configured across the SBFD symbol and N-SBFD symbols within the slot.

[0210] In the present disclosure, a UL subband may refer to a UL subband for SBFD operation. In the present disclosure, a terminal may transmit information indicating whether it supports the function(s) proposed in the present disclosure to a base station. The information indicating whether it supports the function(s) may be included in a UE capability report. The base station may receive a UE capability report from the terminal and perform signaling and / or operations based on information included in the UE capability information (e.g., information indicating whether it supports the function(s)).

[0211] The configuration for the UL subband (e.g., SBFD configuration) can be transmitted via signaling (e.g., RRC signaling). The SBFD configuration can be transmitted after the transmission of the TDD common configuration. The methods proposed in this disclosure can be applied to licensed bands as well as unlicensed bands. The methods proposed in this disclosure can be applied to sidelink and / or supplementary uplink (SUL). For example, the methods proposed in this disclosure can be applied to determine the transmit power in sidelink and / or SUL. Each of the proposals of this disclosure can be applied independently, or a combination of the proposals of this disclosure can be applied. Some of the proposals of this disclosure can be applied to other proposals. Each of the options of this disclosure can be applied independently, or a combination of the options of this disclosure can be applied. Some of the options of this disclosure can be applied to other options. The proposals and / or options of this disclosure can be applied regardless of the RRC state of the UE. For example, a terminal in an RRC idle state, a terminal in an RRC inactive state, and / or a terminal in an RRC connected state can perform the proposals and / or options of the present disclosure. A base station can perform the proposals and / or options of the present disclosure for a terminal in an RRC idle state, a terminal in an RRC inactive state, and / or a terminal in an RRC connected state.

[0212] 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.

[0213] 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.

[0214] 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.

[0215] 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.

[0216] 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. By UE (user equipment) method, A step of receiving first power control information for an UL (uplink) region set in one or more N-SBFD (non-subband full duplex) symbols from a base station; A step of receiving second power control information for a UL subband set in one or more SBFD symbols from the base station; A step of performing a first uplink transmission to the base station using a first transmission power determined based on the first power control information; and A step of performing a second uplink transmission to the base station using a second transmission power determined based on the second power control information, UE's method.

2. In claim 1, The first power control information and the second power control information are associated with the same transmission configuration indicator (TCI) state. UE's method.

3. In claim 1, The first power control information includes information of a first alpha set, and the first transmission power is determined based on a first alpha value selected within the first alpha set, and the second power control information includes information of a second alpha set, and the second transmission power is determined based on a second alpha value selected within the second alpha set. UE's method.

4. In claim 1, The first power control information includes a first update instruction of a first path loss RS (reference signal) resource, and the first transmission power is determined based on a first path loss measured in the updated first path loss RS resource, and the second power control information includes a second update instruction of a second path loss RS resource, and the second transmission power is determined based on a second path loss measured in the updated second path loss RS resource. UE's method.

5. In claim 4, The first update instruction and the second update instruction are included in a MAC (medium access control) CE (control element) received from the base station, or the first update instruction, the second update instruction, and a field indicating that the MAC CE includes the first update instruction and the second update instruction are included in the MAC CE. UE's method.

6. In claim 4, If the updated second path loss RS resource is invalid or if the second path loss is invalid, the second transmission power is determined based on a path loss measured based on a path loss RS resource used for the most recent uplink transmission, a path loss measured based on a path loss RS resource set in a DL (downlink) subband other than the UL subband, or a path loss measured based on a default path loss RS resource preset by the base station. UE's method.

7. In claim 1, The second power control information includes a power offset, and the second transmission power is determined by applying the power offset to the first transmission power. UE's method.

8. In claim 1, Further comprising the step of receiving a first TPC (transmit power control) command and a second TPC command from the base station, The first transmission power is determined by further considering the first TPC command, and the second transmission power is determined by further considering the second TPC command. UE's method.

9. In claim 8, Each of the first transmission power and the second transmission power is determined based on a TPC accumulation method. UE's method.

10. In claim 1, Further comprising the step of receiving a first TPC command and power offset from the base station, The first transmission power is determined by further considering the first TPC command, and the second transmission power is determined by further considering the first TPC command and the power offset. UE's method.

11. In claim 1, The second uplink transmission is a retransmission for the first uplink transmission, and the second power control information includes information indicating that the transmission power is determined based on a TPC accumulation method in different types of symbols, and the second transmission power is determined by accumulating a first TPC command for the first transmission power. UE's method.

12. In claim 11, If the first TCI state of the first uplink transmission is the same as the second TCI state of the second uplink transmission, the second transmission power is determined by accumulating the first TPC command for the first transmission power. UE's method.

13. By the method of the base station, A step of transmitting first power control information for an uplink (UL) region set in one or more N-SBFD (non-subband full duplex) symbols to a UE (user equipment); A step of transmitting second power control information for a UL subband set in one or more SBFD symbols to the UE; A step of receiving a first uplink transmission from the UE based on a first transmission power determined based on the first power control information; and A step of receiving a second uplink transmission from the UE based on a second transmission power determined based on the second power control information, Base station method.

14. In claim 13, The first power control information and the second power control information are associated with the same transmission configuration indicator (TCI) state. Base station method.

15. In claim 13, The first power control information includes information of a first alpha set, and the first transmission power is determined based on a first alpha value selected within the first alpha set, and the second power control information includes information of a second alpha set, and the second transmission power is determined based on a second alpha value selected within the second alpha set. Base station method.

16. In claim 13, The first power control information includes a first update instruction of a first path loss RS (reference signal) resource, and the first transmission power is determined based on a first path loss measured in the updated first path loss RS resource, and the second power control information includes a second update instruction of a second path loss RS resource, and the second transmission power is determined based on a second path loss measured in the updated second path loss RS resource. Base station method.

17. In claim 16, If the updated second path loss RS resource is invalid or if the second path loss is invalid, the second transmission power is determined based on a path loss measured based on a path loss RS resource used for the most recent uplink transmission, a path loss measured based on a path loss RS resource set in a DL (downlink) subband other than the UL subband, or a path loss measured based on a default path loss RS resource preset by the base station. Base station method.

18. In claim 13, Further comprising the step of transmitting a first TPC (transmit power control) command and a second TPC command to the UE, The first transmission power is determined by further considering the first TPC command, and the second transmission power is determined by further considering the second TPC command. Base station method.

19. In claim 13, Further comprising the step of transmitting a first TPC command and power offset to the UE, The first transmission power is determined by further considering the first TPC command, and the second transmission power is determined by further considering the first TPC command and the power offset. Base station method.

20. In claim 13, The second uplink transmission is a retransmission for the first uplink transmission, and the second power control information includes information indicating that the transmission power is determined based on a TPC accumulation method in different types of symbols, and the second transmission power is determined by accumulating a first TPC command for the first transmission power. Base station method.

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