Method and device for uplink communication based on different symbol types in communication system supporting sbfd

Abstract

A method performed by a user equipment (UE) comprises the steps of: receiving, from a base station, resource allocation information for uplink transmission in a first-type symbol; receiving, from the base station, an offset for the uplink transmission in a second-type symbol; performing the uplink transmission in the first-type symbol by using first frequency resources indicated by the resource allocation information; and performing the uplink transmission in the second-type symbol by using second frequency resources determined by applying the offset to the first frequency resources.

Description

Method and apparatus for uplink communication based on different symbol types in a communication system supporting SBFD

[0001] The present disclosure relates to an improved communication technology, and more specifically, to a technology for uplink transmission based on different symbol types in a communication system that supports SBFD (subband full duplex).

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

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

[0004] Meanwhile, a communication network may support SBFD (subband full duplex) operation. In a communication network that supports SBFD operation, an UL (uplink) subband may be configured in the DL (downlink) section. A terminal may perform uplink transmission in the UL subband configured in the DL section and / or in a UL area that is not an SBFD resource (e.g., a UL resource). In other words, uplink transmission may be performed in different symbol types (e.g., SBFD symbols and N(non)-SBFD symbols). The size and / or location of the frequency resource in an SBFD symbol may differ from the size and / or location of the frequency resource in an N-SBFD symbol. In this case, the frequency resource in the SBFD symbol (or N-SBFD symbol) may not be sufficient for uplink transmission, and uplink transmission may fail.

[0005] The objective of the present disclosure to solve the above-mentioned problems is to provide a method and apparatus for uplink communication based on different symbol types in a communication system that supports SBFD (subband full duplex).

[0006] A method of user equipment (UE) according to embodiments of the present disclosure for achieving the above objective comprises: receiving resource allocation information for uplink transmission in a first type of symbol from a base station; receiving an offset for uplink transmission in a second type of symbol from the base station; performing uplink transmission in the first type of symbol using first frequency resources indicated by the resource allocation information; and performing uplink transmission in the second type of symbol using second frequency resources determined by applying the offset to the first frequency resources.

[0007] The first type of symbol and the second type of symbol may be consecutive in the time domain, and the first type of symbol may be an N(non)-SBFD (subband full duplex) symbol and the second type of symbol may be an SBFD symbol, or the first type of symbol may be an SBFD symbol and the second type of symbol may be an N-SBFD symbol.

[0008] The above uplink transmission can be performed across the first type symbol and the second type symbol within one slot or different slots.

[0009] The number of PRBs (physical resource blocks) included in the first frequency resources in the first type of symbol may be the same as the number of PRBs included in the second frequency resources in the second type of symbol.

[0010] In the frequency domain, the second frequency resources may start after the offset from the lowest or highest frequency of the first frequency resources, and the offset may indicate one or more RBs (resource blocks).

[0011] The above uplink transmission may be a CG (configured grant) PUSCH (physical uplink shared channel) transmission, a PUSCH repeated transmission, multiple PUSCH transmissions scheduled by a single DCI (downlink control information), or a TBoMS (transport block over multiple slots) transmission.

[0012] The method of the UE may further include the step of receiving from the base station at least one of the first type of symbol and the second type of symbol, wherein one of the first type of symbol and the second type of symbol may be an SBFD symbol, and the first RIV (resource indication value) of the UL (uplink) subband in the SBFD symbol or the second RIV of the DL (downlink) subband in the SBFD symbol.

[0013] The UL subband indicated by the first RIV may be based on UL SCS (subcarrier spacing), the DL subband indicated by the second RIV may be based on DL SCS, and the UL SCS and the DL SCS may be indicated independently to the UE.

[0014] Based on the fact that the above uplink transmission is an uplink iterative transmission, one or more transmission occasions set on a symbol having the same type as the symbol set for the first transmission occasion of the above uplink iterative transmission can be determined as valid transmission resources, and the above uplink iterative transmission can be performed on the valid transmission resources.

[0015] A method of a base station according to embodiments of the present disclosure for achieving the above objective comprises: transmitting resource allocation information for uplink transmission in a first type of symbol to a UE (user equipment); transmitting an offset for uplink transmission in a second type of symbol to the UE; receiving the uplink transmission in the first type of symbol from the UE using first frequency resources indicated by the resource allocation information; and receiving the uplink transmission in the second type of symbol from the UE using second frequency resources determined by applying the offset to the first frequency resources.

[0016] The first type of symbol and the second type of symbol may be consecutive in the time domain, and the first type of symbol may be an N(non)-SBFD (subband full duplex) symbol and the second type of symbol may be an SBFD symbol, or the first type of symbol may be an SBFD symbol and the second type of symbol may be an N-SBFD symbol.

[0017] The above uplink transmission can be performed across the first type symbol and the second type symbol within one slot or different slots.

[0018] The number of PRBs (physical resource blocks) included in the first frequency resources in the first type of symbol may be the same as the number of PRBs included in the second frequency resources in the second type of symbol.

[0019] In the frequency domain, the second frequency resources may start after the offset from the lowest or highest frequency of the first frequency resources, and the offset may indicate one or more RBs (resource blocks).

[0020] The above uplink transmission may be a CG (configured grant) PUSCH (physical uplink shared channel) transmission, a PUSCH repeated transmission, multiple PUSCH transmissions scheduled by a single DCI (downlink control information), or a TBoMS (transport block over multiple slots) transmission.

[0021] The method of the base station may further include the step of transmitting to the UE at least one of the first type of symbol and the second type of symbol, wherein one of the first type of symbol and the second type of symbol may be an SBFD symbol, and the first RIV (resource indication value) of the UL (uplink) subband or the second RIV of the DL (downlink) subband in the SBFD symbol.

[0022] The UL subband indicated by the first RIV may be based on UL SCS (subcarrier spacing), the DL subband indicated by the second RIV may be based on DL SCS, and the UL SCS and the DL SCS may be indicated independently to the UE.

[0023] Based on the fact that the above uplink transmission is an uplink iterative transmission, one or more transmission occasions set on a symbol having the same type as the symbol set for the first transmission occasion of the above uplink iterative transmission can be determined as valid transmission resources, and the above uplink iterative transmission can be performed on the valid transmission resources.

[0024] User equipment (UE) according to embodiments of the present disclosure for achieving the above objective comprises at least one processor, wherein the at least one processor causes the UE to receive resource allocation information for uplink transmission in a first type of symbol from a base station; receive an offset for uplink transmission in a second type of symbol from the base station; perform uplink transmission in the first type of symbol using first frequency resources indicated by the resource allocation information; and perform uplink transmission in the second type of symbol using second frequency resources determined by applying the offset to the first frequency resources.

[0025] The number of PRBs (physical resource blocks) included in the first frequency resources in the first type of symbol may be the same as the number of PRBs included in the second frequency resources in the second type of symbol.

[0026] According to the present disclosure, a terminal can perform uplink transmission in different symbol types. Some of the frequency resources for uplink transmission may not belong to the uplink (UL) subband in SBFD (subband full duplex) symbols. In this case, the terminal can shift the frequency resources by applying an offset so that all frequency resources belong to the UL subband. Since sufficient frequency resources for uplink transmission in SBFD symbols are guaranteed, uplink transmission in different symbol types can be performed without problems. In other words, uplink transmission in different symbol types may not fail, and the performance of the communication system may be improved.

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

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

[0029] FIG. 3 is a block diagram illustrating embodiments of communication nodes performing communication.

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

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

[0032] FIG. 5 is a conceptual diagram illustrating embodiments of a system frame in a communication system.

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

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

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

[0036] FIG. 9a is a conceptual diagram illustrating a communication method based on SBFD configuration 1.

[0037] FIG. 9b is a conceptual diagram illustrating a communication method based on SBFD configuration 2.

[0038] FIG. 10a is a conceptual diagram illustrating embodiments of uplink transmission in different symbol types.

[0039] FIG. 10b is a conceptual diagram illustrating embodiments of uplink transmission in different symbol types.

[0040] The present disclosure is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present disclosure to specific embodiments and should be understood to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present disclosure.

[0041] Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" may mean a combination of a plurality of related described items or any of a plurality of related described items.

[0042] In the present disclosure, "at least one of A and B" may mean "at least one of A or B" or "at least one of one or more combinations of A and B". Additionally, in the present disclosure, "at least one of A and B" may mean "at least one of A or B" or "at least one of one or more combinations of A and B".

[0043] 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".

[0044] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0045] The terms used in this disclosure are used merely to describe specific embodiments and are not intended to limit this disclosure. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this disclosure, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0046] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which this disclosure pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this disclosure.

[0047] Hereinafter, preferred embodiments of the present disclosure will be described in more detail with reference to the attached drawings. To facilitate overall understanding in describing the present disclosure, the same reference numerals are used for identical components in the drawings, and redundant descriptions of identical components are omitted. Operations according to combinations of embodiments, extensions of embodiments, and / or modifications of embodiments may be performed, as well as the embodiments explicitly described in the present disclosure. The performance of some operations may be omitted, and the order of operations may be changed.

[0048] In the embodiments, even when a method performed at a first communication node among the communication nodes (e.g., transmission or reception of a signal) is described, the corresponding second communication node may perform a method corresponding to the method performed at the first communication node (e.g., reception or transmission of a signal). That is, when the operation of a UE (user equipment) is described, the corresponding base station may perform an operation corresponding to the operation of the UE. Conversely, when the operation of a base station is described, the corresponding UE may perform an operation corresponding to the operation of the base station.

[0049] A base station may be referred to as Node B, evolved Node B, gNode B (next generation node B), gNB, device, apparatus, node, communication node, BTS (base transceiver station), RRH (radio remote head), TRP (transmission reception point), RU (radio unit), RSU (road side unit), radio transceiver, access point, access node, etc. A UE may be referred to as terminal, device, apparatus, node, communication node, end node, access terminal, mobile terminal, station, subscriber station, mobile station, portable subscriber station, OBU (on-broad unit), etc.

[0050] In the present disclosure, signaling may be at least one of upper-layer signaling, MAC (medium access control) signaling, or PHY (physical) signaling. A message used for upper-layer signaling may be referred to as an "upper-layer message" or an "upper-layer signaling message." A message used for MAC signaling may be referred to as a "MAC message" or a "MAC signaling message." A message used for PHY signaling may be referred to as a "PHY message" or a "PHY signaling message." Upper-layer signaling may refer to the transmission and reception operations of system information (e.g., MIB (master information block), SIB (system information block)) and / or RRC (radio resource control) messages. MAC signaling may refer to the transmission and reception operations of MAC CE (control element). PHY signaling may refer to the transmission and reception operations of control information (e.g., DCI (downlink control information), UCI (uplink control information), SCI (sidelink control information)).

[0051] In the present disclosure, "setting an operation (e.g., a transmission operation)" may mean that "setting information for said operation (e.g., an information element, a parameter)" and / or "information directing the performance of said operation" is signaled. "Setting an information element (e.g., a parameter)" may mean that said information element is signaled. In the present disclosure, "signal and / or channel" may mean a signal, a channel, or "signal and channel," and "signal" may be used to mean "signal and / or channel." In the present disclosure, "time" and "time point" may be used interchangeably. "Time" may be interpreted as a time or a time point depending on the context, and "time point" may be interpreted as a time point or a time depending on the context.

[0052] In the present disclosure, a phrase containing "~ case (e.g., when ~)" may be expressed as a phrase containing "~ based on (e.g., based on ~)" or a phrase containing "~ in response to (e.g., in response to ~)". In other words, a phrase containing "~ case" may be interpreted as identical or similar to a phrase containing "~ based on" or a phrase containing "~ in response to".

[0053] The communication networks to which the embodiments are applied are not limited to those described below, and the embodiments may be applied to various communication networks (e.g., 4G communication networks, 5G communication networks, and / or 6G communication networks). Here, the term "communication network" may be used interchangeably with "communication system."

[0054] FIG. 1 is a conceptual diagram illustrating embodiments of a communication system.

[0055] Referring to FIG. 1, the communication system (100) may include a plurality of communication nodes (110-1, 110-2, 110-3, 120-1, 120-2, 130-1, 130-2, 130-3, 130-4, 130-5, 130-6). Additionally, the communication system (100) may further include a core network (e.g., an S-GW (serving-gateway), a P-GW (PDN (packet data network)-gateway), and an MME (mobility management entity)). If the communication system (100) is a 5G communication system (e.g., a new radio (NR) system), the core network may include an AMF (access and mobility management function), a UPF (user plane function), an SMF (session management function), etc.

[0056] Multiple communication nodes (110 to 130) can support communication protocols defined in 3GPP (3rd generation partnership project) standards (e.g., LTE communication protocol, LTE-A communication protocol, NR communication protocol, etc.). Multiple communication nodes (110 to 130) can support CDMA (code division multiple access) technology, WCDMA (wideband CDMA) technology, TDMA (time division multiple access) technology, FDMA (frequency division multiple access) technology, OFDM (orthogonal frequency division multiplexing) technology, Filtered OFDM technology, CP (cyclic prefix)-OFDM technology, DFT-s-OFDM (discrete Fourier transform-spread-OFDM) technology, OFDMA (orthogonal frequency division multiple access) technology, SC (single carrier)-FDMA technology, NOMA (non-orthogonal multiple access) technology, GFDM (generalized frequency division multiplexing) technology, FBMC (filter bank multi-carrier) technology, UFMC (universal filtered multi-carrier) technology, SDMA (space division multiple access) technology, etc. Each of the multiple communication nodes may have the following structure.

[0057] FIG. 2 is a block diagram illustrating embodiments of communication nodes constituting a communication system.

[0058] Referring to FIG. 2, the communication node (200) may include at least one processor (210), a memory (220), and a transceiver (230) that is connected to a network to perform communication. Additionally, 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) to communicate with one another.

[0059] The processor (210) can execute a program command stored in at least one of the memory (220) and the storage device (260). The processor (210) may mean a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which the methods according to embodiments of the present disclosure are performed. Each of the memory (220) and the storage device (260) may be composed of at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory (220) may be composed of at least one of read-only memory (ROM) and random access memory (RAM).

[0060] Referring again to FIG. 1, the communication system (100) may include a plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) and a plurality of terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6). Each of the first base station (110-1), the second base station (110-2), and the third base station (110-3) may form a macro cell. Each of the fourth base station (120-1) and the fifth base station (120-2) may form a small cell. The fourth base station (120-1), the third terminal (130-3), and the fourth terminal (130-4) may be located within the cell coverage of the first base station (110-1). The second terminal (130-2), the fourth terminal (130-4), and the fifth terminal (130-5) may be located within the cell coverage of the second base station (110-2). The fifth base station (120-2), the fourth terminal (130-4), the fifth terminal (130-5), and the sixth terminal (130-6) may be located within the cell coverage of the third base station (110-3). The first terminal (130-1) may be located within the cell coverage of the fourth base station (120-1). The sixth terminal (130-6) may be located within the cell coverage of the fifth base station (120-2).

[0061] Here, each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be referred to as NB (NodeB), eNB (evolved NodeB), gNB, ABS (advanced base station), HR-BS (high reliability-base station), BTS (base transceiver station), radio base station, radio transceiver, access point, access node, RAS (radio access station), MMR-BS (mobile multihop relay-base station), RS (relay station), ARS (advanced relay station), HR-RS (high reliability-relay station), HNB (home NodeB), HeNB (home eNodeB), RSU (road side unit), RRH (radio remote head), TP (transmission point), TRP (transmission and reception point), etc.

[0062] Each of the multiple terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) may be referred to as UE (user equipment), TE (terminal equipment), AMS (advanced mobile station), HR-MS (high reliability-mobile station), terminal, access terminal, mobile terminal, station, subscriber station, mobile station, portable subscriber station, node, device, OBU (on board unit), etc.

[0063] Meanwhile, each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may operate in different frequency bands or in the same frequency band. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be connected to each other via an ideal backhaul link or a non-ideal backhaul link, and may exchange information with each other via an ideal backhaul link or a non-ideal backhaul link. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be connected to a core network via an ideal backhaul link or a non-ideal backhaul link. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can transmit a signal received from the core network to the corresponding terminal (130-1, 130-2, 130-3, 130-4, 130-5, 130-6), and can transmit a signal received from the corresponding terminal (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) to the core network.

[0064] In addition, each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can support MIMO transmission (e.g., SU (single user)-MIMO, MU (multi user)-MIMO, massive MIMO, etc.), CoMP (coordinated multipoint) transmission, carrier aggregation (CA) transmission, transmission in an unlicensed band, sidelink communication (e.g., D2D (device to device communication), ProSe (proximity services)), IoT (Internet of Things) communication, dual connectivity (DC), etc. Here, each of the plurality of terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) can perform an operation corresponding to the base station (110-1, 110-2, 110-3, 120-1, 120-2) and an operation supported by the base station (110-1, 110-2, 110-3, 120-1, 120-2). For example, the second base station (110-2) can transmit a signal to the fourth terminal (130-4) based on the SU-MIMO method, and the fourth terminal (130-4) can receive a signal from the second base station (110-2) based on the SU-MIMO method. Alternatively, the second base station (110-2) can transmit a signal to the fourth terminal (130-4) and the fifth terminal (130-5) based on the MU-MIMO method, and each of the fourth terminal (130-4) and the fifth terminal (130-5) can receive a signal from the second base station (110-2) by the MU-MIMO method.

[0065] Each of the first base station (110-1), the second base station (110-2), and the third base station (110-3) can transmit a signal to the fourth terminal (130-4) based on the CoMP method, and the fourth terminal (130-4) can receive a signal from the first base station (110-1), the second base station (110-2), and the third base station (110-3) by the CoMP method. Each of the multiple base stations (110-1, 110-2, 110-3, 120-1, 120-2) can transmit and receive signals based on the CA method with terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) within its cell coverage area. Each of the first base station (110-1), the second base station (110-2), and the third base station (110-3) can control sidelink communication between the fourth terminal (130-4) and the fifth terminal (130-5), and each of the fourth terminal (130-4) and the fifth terminal (130-5) can perform sidelink communication by controlling each of the second base station (110-2) and the third base station (110-3).

[0066] Meanwhile, communication nodes performing communication in a communication network may be configured as follows. The communication node shown in FIG. 3 may be a specific embodiment of the communication node shown in FIG. 2.

[0067] FIG. 3 is a block diagram illustrating embodiments of communication nodes performing communication.

[0068] Referring to FIG. 3, the first communication node (300a) and the second communication node (300b) may each be a base station or a UE. The first communication node (300a) may transmit a signal to the second communication node (300b). A 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 a controller (316). The control information may include at least one of system information, RRC setting information (e.g., information set by RRC signaling), MAC control information (e.g., MAC CE), or PHY control information (e.g., DCI, SCI).

[0069] The transmitting processor (311) can generate data symbol(s) by performing processing operations on data (e.g., encoding operations, symbol mapping operations, etc.). The transmitting processor (311) can generate control symbol(s) by performing processing operations on control information (e.g., encoding operations, symbol mapping operations, etc.). Additionally, the transmitting processor (311) can generate synchronization / reference symbol(s) for synchronization signals and / or reference signals.

[0070] The Tx MIMO processor (312) can perform spatial processing operations (e.g., precoding operations) on data symbol(s), control symbol(s), and / or synchronization / reference symbol(s). The output of the Tx MIMO processor (312) (e.g., a symbol stream) can be provided to modulators (MODs) included in transceivers (313a to 313t). The modulators (MODs) can perform processing operations on the symbol stream to generate modulated symbols and perform additional processing operations on the modulated symbols (e.g., analog conversion operations, amplification operations, filtering operations, up-conversion operations) to generate signals. The signals generated by the modulators (MODs) of the transceivers (313a to 313t) can be transmitted through antennas (314a to 314t).

[0071] Signals transmitted by the first communication node (300a) can be received at the antennas (364a to 364r) of the second communication node (300b). Signals received at the antennas (364a to 364r) can be provided to demodulators (DEMODs) included in the transceivers (363a to 363r). The demodulators (DEMODs) can obtain samples by performing processing operations on the signals (e.g., filtering, amplification, down-conversion, digital conversion). The demodulators (DEMODs) can obtain symbols by performing additional processing operations on the samples. The MIMO detector (362) can perform MIMO detection operations on the symbols. The receiving processor (361) can perform processing operations on the symbols (e.g., deinterleaving, decoding). The output of the receiving processor (361) can be provided to the data sink (360) and the controller (366). For example, data can be provided to the data sink (360), and control information can be provided to the controller (366).

[0072] Meanwhile, the second communication node (300b) can transmit a signal to the first communication node (300a). The transmission processor (368) included in the second communication node (300b) can receive data (e.g., a data unit) from the data source (367) and can generate data symbol(s) by performing a processing operation on the data. The transmission processor (368) can receive control information from the controller (366) and can generate control symbol(s) by performing a processing operation on the control information. Additionally, the transmission processor (368) can generate reference symbol(s) by performing a processing operation on a reference signal.

[0073] The Tx MIMO processor (369) can perform spatial processing operations (e.g., precoding operations) on data symbol(s), control symbol(s), and / or reference symbol(s). The output of the Tx MIMO processor (369) (e.g., a symbol stream) can be provided to modulators (MODs) included in transceivers (363a to 363t). The modulators (MODs) can perform processing operations on the symbol stream to generate modulated symbols and perform additional processing operations on the modulated symbols (e.g., analog conversion operations, amplification operations, filtering operations, up-conversion operations) to generate signals. The signals generated by the modulators (MODs) of the transceivers (363a to 363t) can be transmitted through antennas (364a to 364t).

[0074] Signals transmitted by the second communication node (300b) can be received at the antennas (314a to 314r) of the first communication node (300a). Signals received at the antennas (314a to 314r) can be provided to demodulators (DEMODs) included in the transceivers (313a to 313r). The demodulators (DEMODs) can obtain samples by performing processing operations on the signals (e.g., filtering operation, amplification operation, down-conversion operation, digital conversion operation). The demodulators (DEMODs) can obtain symbols by performing additional processing operations on the samples. The MIMO detector (320) can perform MIMO detection operations on the symbols. The receiving processor (319) can perform processing operations on the symbols (e.g., deinterleaving operation, decoding operation). The output of the receiving processor (319) can be provided to the data sink (318) and the controller (316). For example, data can be provided to the data sink (318), and control information can be provided to the controller (316).

[0075] The memories (315 and 365) may store data, control information, and / or program code. The scheduler (317) may perform scheduling operations for communication. The processors (311, 312, 319, 361, 368, 369) and controllers (316, 366) shown in FIG. 3 may be the processor (210) shown in FIG. 2 and may be used to perform the methods described in this disclosure.

[0076] 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.

[0077] Referring to FIGS. 4a and 4b, a transmission path (410) may be implemented at a communication node that transmits a signal, and a reception path (420) may be implemented at a communication node that receives a signal. The transmission path (410) may include a channel coding and modulation block (411), an S-to-P (serial-to-parallel) block (512), an N IFFT (Inverse Fast Fourier Transform) block (413), a P-to-S (parallel-to-serial) block (414), a CP (cyclic prefix) addition block (415), and an UC (up-converter) (UC) (416). The reception path (420) may include a DC (down-converter) (421), a CP removal block (422), an S-to-P block (423), an N FFT block (424), a P-to-S block (425), and a channel decoding and demodulation block (426). Here, N can be a natural number.

[0078] Information bits in the transmission path (410) can be input to the channel coding and modulation block (411). The channel coding and modulation block (411) can perform coding operations (e.g., LDPC (low-density parity check) (LDPC) coding operations, polar coding operations, etc.) and modulation operations (e.g., QPSK (Quadrature Phase Shift Keying), QAM (Quadrature Amplitude Modulation), etc.) on the information bits. The output of the channel coding and modulation block (411) may be a sequence of modulation symbols.

[0079] The S-to-P block (412) can convert modulated symbols in the frequency domain into parallel symbol streams to generate N parallel symbol streams. N can be the IFFT size or the FFT size. The N IFFT block (413) can generate signals in the time domain by performing an IFFT operation on the N parallel symbol streams. The P-to-S block (414) can convert the output of the N IFFT block (413) (e.g., parallel signals) into a serial signal to generate a serial signal.

[0080] The CP addition block (415) can insert CP into the signal. The UC (416) can up-convert the frequency of the output of the CP addition block (415) to an RF (radio frequency) frequency. Additionally, the output of the CP addition block (415) can be filtered in the baseband before up-conversion.

[0081] A signal transmitted from the transmission path (410) can be input to the reception path (420). The operation in the reception path (420) may be the inverse operation of the operation in the transmission path (410). The DC (421) may down-convert the frequency of the received signal to a baseband frequency. The CP removal block (422) may remove CP from the signal. The output of the CP removal block (422) may be a serial signal. The S-to-P block (423) may convert the serial signal into parallel signals. The N FFT block (424) may generate N parallel signals by performing an FFT algorithm. The P-to-S block (425) may convert the parallel signals into a sequence of modulation symbols. The channel decoding and demodulation block (426) may perform a demodulation operation on the modulation symbols and perform a decoding operation on the result of the demodulation operation to restore the data.

[0082] In FIGS. 4a and 4b, Discrete Fourier Transform (DFT) and Inverse DFT (IDFT) may be used instead of FFT and IFFT. In FIGS. 4a and 4b, each of the blocks (e.g., components) may be implemented by at least one of hardware, software, or firmware. For example, in FIGS. 4a and 4b, some blocks may be implemented by software, and the remaining blocks may be implemented by hardware or a "combination of hardware and software." In FIGS. 4a and 4b, one block may be subdivided into multiple blocks, multiple blocks may be integrated into one block, some blocks may be omitted, and blocks supporting other functions may be added.

[0083] FIG. 5 is a conceptual diagram illustrating embodiments of a system frame in a communication system.

[0084] Referring to FIG. 5, time resources in a communication system can be divided into frames. For example, system frames can be set consecutively in the time domain of the communication system. The length of a system frame can be 10 ms (millisecond). The system frame number (SFN) can be set from #0 to #1023. In this case, 1024 system frames can be repeated in the time domain of the communication system. For example, the SFN of a system frame after system frame #1023 can be #0.

[0085] A single system frame may contain two half frames. The length of a single half frame may be 5ms. A half frame located at the beginning of the system frame may be referred to as "Half Frame #0", and a half frame located at the end of the system frame may be referred to as "Half Frame #1". A system frame may contain 10 subframes. The length of a single subframe may be 1ms. Within a single system frame, the 10 subframes may be referred to as "Subframe #0-9".

[0086] FIG. 6 is a conceptual diagram illustrating embodiments of subframes in a communication system.

[0087] Referring to FIG. 6, one subframe may include n slots, where n is a natural number. Thus, one subframe may consist of one or more slots.

[0088] FIG. 7 is a conceptual diagram illustrating embodiments of slots in a communication system.

[0089] Referring to FIG. 7, a slot may contain one or more symbols. A slot illustrated in FIG. 7 may contain 14 symbols. The length of the slot may vary depending on the number of symbols included in the slot and the length of the symbols. Alternatively, the length of the slot may vary depending on the numerology.

[0090] Numerals applied to physical signals and channels in a communication system may be variable. Numerals may be variable to meet various technical requirements of the communication system. In a communication system where CP (cyclic prefix) based OFDM waveform technology is applied, numerals may include subcarrier spacing and CP length (or CP type). Table 1 may be a first embodiment of a method for configuring numerals for a CP-OFDM based communication system. Depending on the frequency band in which the communication system operates, at least some of the numerals in Table 1 may be supported. Additionally, numerals not listed in Table 1 may be further supported in the communication system.

[0091]

[0092] When the subcarrier spacing is 15 kHz (e.g., μ=0), the slot length may be 1 ms. In this case, one system frame may contain 10 slots. When the subcarrier spacing is 30 kHz (e.g., μ=1), the slot length may be 0.5 ms. In this case, one system frame may contain 20 slots.

[0093] When the subcarrier spacing is 60 kHz (e.g., μ=2), the slot length may be 0.25 ms. In this case, one system frame may contain 40 slots. When the subcarrier spacing is 120 kHz (e.g., μ=3), the slot length may be 0.125 ms. In this case, one system frame may contain 80 slots. When the subcarrier spacing is 240 kHz (e.g., μ=4), the slot length may be 0.0625 ms. In this case, one system frame may contain 160 slots.

[0094] The symbol can be set as a downlink (DL) symbol, a flexible (FL) symbol, or an uplink (UL) symbol. A slot consisting only of a DL symbol may be referred to as a "DL slot," a slot consisting only of an FL symbol may be referred to as an "FL slot," and a slot consisting only of a UL symbol may be referred to as an "UL slot."

[0095] The slot format can be semi-fixed by upper-layer signaling (e.g., RRC signaling). Information indicating the semi-fixed slot format may be included in system information, and the semi-fixed slot format can be set cell-specifically. Additionally, the semi-fixed slot format can be additionally set per terminal through terminal-specific upper-layer signaling (e.g., RRC signaling). The flexible symbols of the cell-specific slot format can be overridden as downlink symbols or uplink symbols by the terminal-specific upper-layer signaling. Furthermore, the slot format can be dynamically indicated by physical layer signaling (e.g., the SFI (slot format indicator) included in the DCI). The semi-fixed slot format can be overridden by the dynamically indicated slot format. For example, the semi-fixed flexible symbols can be overridden as downlink symbols or uplink symbols by the SFI.

[0096] The reference signal may be a CSI-RS (channel state information-reference signal), SRS (sounding reference signal), DM-RS (demodulation-reference signal), PT-RS (phase tracking-reference signal), etc. The channel may be a PBCH (physical broadcast channel), PDCCH (physical downlink control channel), PDSCH (physical downlink shared channel), PUCCH (physical uplink control channel), PUSCH (physical uplink shared channel), PSCCH (physical sidelink control channel), PSSCH (physical sidelink shared channel), etc. In the present disclosure, the control channel may mean PDCCH, PUCCH, or PSCCH, and the data channel may mean PDSCH, PUSCH, or PSSCH.

[0097] FIG. 8 is a conceptual diagram illustrating embodiments of time-frequency resources in a communication system.

[0098] Referring to FIG. 8, a resource consisting of one symbol (e.g., an OFDM symbol) in the time domain and one subcarrier in the frequency domain can be defined as a "RE (resource element)." A resource consisting of one OFDM symbol in the time domain and K subcarriers in the frequency domain can be defined as a "REG (resource element group)." A REG can include K REs. A REG can be used as the basic unit of resource allocation in the frequency domain. K can be a natural number. For example, K can be 12. N can be a natural number. In the slot illustrated in FIG. 7, N can be 14. N OFDM symbols can be used as the basic unit of resource allocation in the time domain.

[0099] In the present disclosure, RB may mean a common RB (CRB). Alternatively, RB may mean a PRB or a virtual RB (VRB). In a communication system, a CRB may mean an RB that constitutes a set of consecutive RBs (e.g., a common RB grid) based on a reference frequency (e.g., point A). A carrier and / or bandwidth portion may be placed on the common RB grid. That is, the carrier and / or bandwidth portion may be composed of CRB(s). An RB or CRB constituting the bandwidth portion may be referred to as a PRB, and within the bandwidth portion, a CRB index may be appropriately converted to a PRB index.

[0100] Downlink data may be transmitted via PDSCH. A base station may transmit configuration information of the PDSCH (e.g., scheduling information) to a terminal via PDCCH. A terminal may obtain the configuration information of the PDSCH by receiving the PDCCH (e.g., downlink control information (DCI)). For example, the configuration information of the PDSCH may include a modulation coding scheme (MCS) used for transmitting and receiving the PDSCH, time resource information of the PDSCH, frequency resource information of the PDSCH, feedback resource information for the PDSCH, etc. PDSCH may refer to a radio resource where downlink data is transmitted and received. Alternatively, PDSCH may refer to the downlink data itself. PDCCH may refer to a radio resource where downlink control information (e.g., DCI) is transmitted and received. Alternatively, PDCCH may refer to the downlink control information itself.

[0101] The terminal may perform a monitoring operation for the PDCCH to receive the PDSCH transmitted from the base station. The base station may notify the terminal of configuration information for the monitoring operation of the PDCCH using a higher-layer message (e.g., a radio resource control (RRC) message). The configuration information for the monitoring operation of the PDCCH may include CORESET (control resource set) information and search space information.

[0102] CORESET information may include PDCCH DMRS (demodulation reference signal) information, PDCCH precoding information, PDCCH occasion information, etc. The PDCCH DMRS may be a DMRS used to demodulate the PDCCH. A PDCCH occasion may be an area where the PDCCH can exist. That is, a PDCCH occasion may be an area where DCI can be transmitted. A PDCCH occasion may be referred to as a PDCCH candidate. PDCCH occasion information may include time resource information and frequency resource information of the PDCCH occasion. In the time domain, the length of the PDCCH occasion may be indicated in symbol units. In the frequency domain, the size of the PDCCH occasion may be indicated in RB units (e.g., PRB (physical resource block) units or CRB (common resource block) units).

[0103] The search space information may include a CORESET ID (identifier) ​​associated with the search space, the period of PDCCH monitoring, and / or an offset. The period and offset of PDCCH monitoring may each be specified in slot units. Additionally, the search space information may further include the index of the symbol where the PDCCH monitoring operation begins.

[0104] A base station may configure a Bandwidth Part (BWP) for downlink communication. BWPs may be configured differently for each terminal. The base station may notify the terminal of the BWP configuration information using upper-layer signaling. Upper-layer signaling may refer to "transmission operations of system information" and / or "transmission operations of Radio Resource Control (RRC) messages." One or more BWPs may be configured for a single terminal. The terminal may receive BWP configuration information from the base station and identify the BWP(s) configured by the base station based on the BWP configuration information. If multiple BWPs are configured for downlink communication, the base station may activate one or more of the multiple BWPs. The base station may transmit the configuration information of the activated BWP(s) to the terminal using at least one of upper-layer signaling, a Medium Access Control (MAC) Control Element (CE), or a DCI. The base station may perform downlink communication using the activated BWP(s). The terminal can identify the activated BWP(s) by receiving configuration information of the activated BWP(s) from the base station, and can perform a downlink reception operation on the activated BWP(s).

[0105] 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.

[0106] A communication system may support the time division duplexing (TDD) method. In a communication system that supports the TDD method (hereinafter referred to as the "TDD communication system"), DL (downlink) symbol(s) and UL (uplink) symbol(s) may be set in different time resources within a single carrier. DL symbols and UL symbols may be associated with coverage and / or latency. In a TDD communication system, the base station can utilize resources more efficiently than the frequency division duplexing (FDD) method by considering various use cases. Resource scheduling operations of the base station in a TDD communication system may be important. For enhanced TDD operation, SBFD operations (e.g., SBFD method) may be supported. If SBFD operations are 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, and other subbands may be UL subbands and / or FL subbands. In this disclosure, the DL signal may be interpreted as a DL signal, a DL channel, or "DL signal and DL channel" depending on the context. In this disclosure, the UL signal may be interpreted as a UL signal, a UL channel, or "UL signal and UL channel" depending on the context.

[0107] Symbols to which SBFD operations are applied may be referred to as SBFD symbols. Symbols to which SBFD operations are not applied may be referred to as N(non)-SBFD symbols. N-SBFD symbols may be DL symbols, UL symbols, or FL symbols. In an SBFD symbol, the terminal can perform DL communication and UL communication. In other words, in an SBFD symbol, the terminal can perform full-duplex operation. The base station may assume that DL communication and UL communication are possible in an SBFD symbol. In an N-SBFD symbol, the terminal can perform one of DL communication and UL communication. In other words, in an N-SBFD symbol, the terminal can perform half-duplex operation. An SBFD symbol may be a symbol that includes a subband to which SBFD operations are performed. The subband for SBFD may be referred to or interpreted as a UL subband. The UL subband can exist (e.g., be configured) within the symbol where the SSB (synchronization signal block) is transmitted.

[0108] Resources for SBFD operation (e.g., time resources and / or frequency resources) may be configured in a semi-static manner. In other words, the configuration for SBFD resources may be a semi-static configuration. "That the SBFD resource configuration is a semi-static configuration" may mean that the SBFD resource is configured by semi-static signaling (e.g., system information, RRC messages). In this disclosure, SBFD resources may refer to time resources and / or frequency resources for SBFD operation. UL subbands for SBFD may be SBFD resources. Alternatively, SBFD resources may be configured in a dynamic manner. "That the SBFD resource configuration is a dynamic configuration" may mean that the SBFD resource is configured by dynamic signaling (e.g., MAC CE, DCI, SCI).

[0109] SBFD resources (e.g., UL subband, SBFD symbol) may be configured within DL resources and / or FL (flexible) resources configured by TDD-UL-DL configuration common information (e.g., TDD-UL-DL-configCommon). In the time domain, the transition point from an N-SBFD symbol to an SBFD symbol may be limited to one. In the time domain, the transition point from an SBFD symbol to an N-SBFD symbol may be limited to one. Regarding the resource configuration of a subband for SBFD, it may be desirable for the terminal to be aware of the resource configuration information of the subband for SBFD in advance.

[0110] TDD-UL-DL configuration common information can be used to configure patterns (e.g., TDD-UL-DL-Pattern) for DL ​​resources and / or UL resources in the time domain of a TDD communication system. Patterns for DL ​​resources and / or UL resources may be referred to as UL / DL patterns. UL / DL patterns may change depending on the environment of the communication system (e.g., TDD communication system). Up to two UL / DL patterns may be configured on a terminal. TDD-UL-DL configuration common information may be cell-specific parameters (e.g., cell-specific configuration information). The base station may change the configuration for symbol(s) (e.g., transmission direction, type) on a terminal-by-terminal basis based on a specific slot within a preset UL / DL pattern. The slot where the symbol configuration (e.g., symbol direction, symbol type) can be changed may 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.

[0111]

[0112]

[0113]

[0114] The UL / DL pattern, configured by the common information of the TDD-UL-DL configuration, may be repeated according to a specific period (e.g., dl-UL-TransmissionPeriodicity). In the time interval where the UL / DL pattern is applied, the leading portion may be configured as a DL resource. In the time interval where the UL / DL pattern is applied, the trailing portion may be configured as a UL resource. Resources that are not configured as DL or UL resources in the time interval where the UL / DL pattern is applied may be FL resources. The period of the UL / DL pattern may 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., DL symbol / slot) to a UL resource (e.g., UL symbol / slot). Since the propagation delay of the DL signal causes interference to the UL resource, a guard time may be required for switching from a DL resource to a UL resource. A separate guard time may not be required for switching from UL resources to DL resources. Since UL signals are transmitted based on TAC (timing advance command) directed by the base station, a guard time may not be required for switching from UL resources to DL resources.

[0115] 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". UL subband may refer to a subband for SBFD. DL symbol(s) and / or DL ​​slot(s) may be referred to as DL area(or DL ​​resource). UL symbol(s) and / or UL slot(s) may be referred to as UL area(or UL resource). FL symbol(s) and / or FL slot(s) may be referred to as FL area(or FL resource). A terminal that supports (e.g. recognizes) SBFD operation may be referred to as an SBFD terminal or SBFD UE. A terminal that does not support (e.g., does not recognize) SBFD operation may be referred to as an N(non)-SBFD terminal or an N-SBFD UE. An N-SBFD terminal may be a legacy terminal (e.g., a legacy UE). In this disclosure, a terminal may be interpreted as an SBFD terminal and / or an N-SBFD terminal depending on the context. Legacy settings (e.g., legacy information, legacy settings information) may be information for an N-SBFD terminal.

[0116] An SBFD resource may be configured adjacent to (e.g., contiguously) an N-SBFD resource. An SBFD resource may refer to an SBFD symbol and / or an SBFD slot. An N-SBFD resource may refer to an N-SBFD symbol and / or an N-SBFD slot. In adjacent slots (e.g., contiguous slots), SBFD symbols and N-SBFD symbols may exist adjacently. The types of adjacent symbols (e.g., SBFD symbols or N-SBFD symbols) may be the same or different. The operation of the terminal may vary based on the types of adjacent symbols (e.g., the same symbol type or different symbol types).

[0117] A communication system supporting SBFD may support two types of SBFD configurations (e.g., SBFD configuration 1, SBFD configuration 2). SBFD configuration 1 may be referred to as SBFD transmission configuration 1 or SBFD configuration 1 transmission. SBFD configuration 2 may be referred to as SBFD transmission configuration 2 or SBFD configuration 2 transmission. If SBFD configuration 1 is configured on a terminal (e.g., indicated), the terminal may perform communication (e.g., downlink communication and / or uplink communication) using the same symbol type (e.g., SBFD symbol or N-SBFD symbol). If SBFD configuration 2 is configured on a terminal (e.g., indicated), the terminal may perform communication (e.g., downlink communication and / or uplink communication) using different symbol types (e.g., SBFD symbol and N-SBFD symbol). Symbol types may be classified into SBFD symbols and N-SBFD symbols. A symbol type may be interpreted as a symbol (e.g., a resource) having the said symbol type depending on the context. In the present disclosure, uplink communication (e.g., uplink transmission) may include PUCCH transmission (e.g., PUCCH repeated transmission), PUSCH transmission (e.g., PUSCH repeated transmission), and / or UL RS (reference signal) transmission (e.g., SRS transmission).

[0118] FIG. 9a is a conceptual diagram illustrating a communication method based on SBFD configuration 1.

[0119] Referring to FIG. 9a, slot n and slot n+1 may be adjacent slots in the time domain, and the latter part of slot n in the time domain may be set to UL symbol(s) (e.g., N-SBFD symbol(s)), and the former part of slot n+1, which is contiguous with slot n in the time domain, may be set to SBFD symbol(s). n may be a natural number. When SBFD setting 1 is set on a terminal, the terminal may perform uplink communication (e.g., uplink transmission) using the UL symbol(s) set on the latter part of slot n, and may not expect to perform uplink communication in the former part of slot n+1 (e.g., SBFD symbol). In other words, when SBFD setting 1 is set on a terminal, the terminal may not perform uplink communication in different symbol types.

[0120] FIG. 9b is a conceptual diagram illustrating a communication method based on SBFD configuration 2.

[0121] Referring to FIG. 9b, slot n and slot n+1 may be adjacent slots in the time domain, and the latter part of slot n in the time domain may be set to UL symbol(s) (e.g., N-SBFD symbol(s)), and the former part of slot n+1, which is contiguous with slot n in the time domain, may be set to SBFD symbol(s). n may be a natural number. When SBFD setting 2 is set on a terminal, the terminal may perform uplink communication (e.g., uplink transmission) using the UL symbol(s) set on the latter part of slot n, and may perform uplink communication on the former part of slot n+1 (e.g., SBFD symbol). In other words, when SBFD setting 2 is set on a terminal, the terminal may perform uplink communication on different symbol types.

[0122] In the present disclosure, a method for setting uplink communication (e.g., setting parameters) for each of SBFD setting 1 and SBFD setting 2 and / or a method for setting frequency hopping for each of SBFD setting 1 and SBFD setting 2 will be proposed. Frequency hopping may include inter-slot frequency hopping and intra-slot frequency hopping. The methods proposed in the present disclosure may be applied for inter-slot frequency hopping and / or intra-slot frequency hopping.

[0123] A base station may transmit information regarding PUCCH resources and / or sets of PUCCH resources to a terminal via signaling (e.g., RRC configuration). A terminal may receive information regarding PUCCH resources and / or sets of PUCCH resources from the base station. Information regarding PUCCH resources and / or sets of PUCCH resources may be referred to as PUCCH resource information. PUCCH resource information (e.g., a portion of PUCCH resource information) may be transmitted to the terminal via cell-specific signaling. PUCCH resource information (e.g., another portion of PUCCH resource information) may be transmitted to the terminal via UE-specific signaling. Individual configuration of PUCCH resource information via cell-specific signaling may not be possible. PUCCH resource information via cell-specific signaling may include minimum PUCCH resource information and / or common PUCCH resource information for all terminals. PUCCH resource information via cell-specific signaling may be used for terminals not connected to a base station.

[0124] A set of PUCCH resources and PUCCH resources may have a hierarchical relationship (e.g., a hierarchical structure). A set of PUCCH resources may include one or more PUCCH resources. A unique ID (identifier or index) for a PUCCH resource may be assigned (e.g., set). PUCCH resource information may include at least one of a PUCCH resource ID, start PRB information (e.g., start PRB index, offset indicating the start PRB), information indicating whether intra-slot frequency hopping is performed, or start PRB information for a second hop (e.g., frequency hop) (e.g., start PRB index). The start PRB information and / or the start PRB information for the second hop may be a resource block (RB) offset indicating the start PRB. The start PRB for the second hop may be referred to as the second hop PRB. When the performance of intra-slot frequency hopping is directed, the start PRB information included in the PUCCH resource information may indicate the start PRB of the first hop, and the second hop PRB information included in the PUCCH resource information may indicate the start PRB of the second hop. Alternatively, the terminal may determine the start PRB of the first hop and / or the start PRB of the second hop based on the information included in the PUCCH resource information. In the present disclosure, the start PRB index may be interpreted as an offset for indicating the start PRB index depending on the context.

[0125] A PUCCH resource may be based on one of the PUCCH formats: PUCCH format 0, PUCCH format 1, PUCCH format 2, PUCCH format 3, and PUCCH format 4. A PUCCH may be configured on different time and / or frequency resources depending on the PUCCH format. Resource configuration according to the PUCCH format may be applied equally to PUCCH resources having different indices (e.g., different IDs). A base station may independently configure a start PRB (e.g., the start PRB of the first hop) and a second hop PRB (e.g., the start PRB of the second hop) for each of the PUCCH resources. For example, the start PRB and / or second hop PRB for the first PUCCH resource may be different from the start PRB and / or second hop PRB for the second PUCCH resource. An index for the start PRB may be assigned based on the location of the PUCCH resource.

[0126] A single slot may include one or more SBFD symbols and one or more N-SBFD symbols. The base station may set PUCCH resources for SBFD symbols as well as N-SBFD symbols to the terminal. PUCCH resource information having the same PUCCH ID may include resource information for N-SBFD symbols (e.g., start PRB index, second hop PRB index) and resource information for SBFD symbols (e.g., start PRB index, second hop PRB index).

[0127] Next, the rules for uplink communication, the rules for downlink communication, the method for configuring resources for the UL subband in the frequency domain, the method for configuring resources for the DL subband in the frequency domain, and the rules for transmitting and receiving SSB within the UL subband will be explained.

[0128] - Proposal #1

[0129] In the frequency domain, the resources of the DL subband and UL subband, respectively, may be indicated by a resource indication value (RIV). A base station may transmit the RIV for the DL subband and / or the RIV for the UL subband to a terminal via signaling. The RIV for the DL subband may indicate the starting RB and the bandwidth of the DL subband. The RIV for the UL subband may indicate the starting RB and the bandwidth of the UL subband. A terminal may receive the RIV for the DL subband and / or the RIV for the UL subband via the base station's signaling. The center frequency of the DL subband may be the same as the center frequency of the UL subband, and the size of the BWP to which the DL subband belongs (e.g., DL BWP) may differ from the size of the BWP to which the UL subband belongs (e.g., UL BWP). The DL subband and the UL subband may exist within an active BWP (e.g., an active DL BWP), and a RIV indicating the frequency resources (e.g., frequency positions) of each of the DL subband and the UL subband may be set based on the active BWP (e.g., the size of the active BWP).

[0130] The UL subband may be set at the center of the BWP or at the edge of the BWP. Based on the setting location of the UL subband, one or two DL subbands may be set. The base station may explicitly set (e.g., instruct) the DL subband and the UL subband to the terminal, respectively. In other words, the DL subband and / or the UL subband may be set in an explicit manner. Alternatively, if one type of subband (e.g., the DL subband or the UL subband) is set, the other type of subband may be set on the remaining frequency resources excluding the guard band. Or, if one type of subband (e.g., the DL subband or the UL subband) is set, the other type of subband may be set on the remaining frequency resources without considering the guard band. In other words, the DL subband and / or the UL subband may be set in an implicit manner.

[0131] The size of the guard band may be defined in technical specifications. Alternatively, the base station may transmit information regarding the size of the guard band to the terminal via signaling (e.g., RRC setting). The terminal may check the information regarding the size of the guard band via the base station's signaling. The base station may set (e.g., instruct) a RIV for the UL subband to the terminal. The terminal may receive a RIV for the UL subband from the base station. If the UL subband is located at the edge of a frequency band (e.g., BWP), the UL subband may be set in a lower region excluding the guard band containing the lowest frequency of said frequency band (e.g., lowest subcarrier, lowest RB (resource block)), or in an upper region excluding the guard band containing the highest frequency of said frequency band (e.g., highest subcarrier, highest RB). Within a frequency band, one UL subband may exist and one DL subband may exist.

[0132] Alternatively, the UL subband may be located in the center of the frequency band. A guard band located at the bottom of the frequency band may be set in a frequency resource consisting of n RBs or m subcarriers starting from the lowest frequency of the frequency band. A guard band located at the top of the frequency band may be set in a frequency resource consisting of n RBs or m subcarriers starting from the highest frequency of the frequency band. n and m may each be natural numbers. Within the frequency band (e.g., BWP), the remaining frequency resource excluding the UL subband and guard band(s) may be set as a DL subband. Within the frequency band, one UL subband may exist and two DL subbands may exist.

[0133] The DL subband may be explicitly set (e.g., indicated) to the terminal, and the UL subband may be set within the frequency band in consideration of the DL subband and guard band(s). The RIV of the UL subband may indicate the frequency position of the UL subband in SBFD symbols. The RIV of the DL subband may indicate the frequency position of the DL subband in SBFD symbols. The RIV of the UL subband and the RIV of the DL subband may be set based on the DL SCS (subcarrier spacing). In this case, the terminal may interpret the RIV of the UL subband and the RIV of the DL subband based on the DL SCS. Alternatively, the RIV of the UL subband may be set based on the UL SCS, and the RIV of the DL subband may be set based on the DL SCS. In this case, the terminal can resolve the RIV of the UL subband based on the UL SCS, and the terminal can resolve the RIV of the DL subband based on the DL SCS. The DL SCS may be based on the SCS setting of the SCS-SpecificCarrierList for DL. The UL SCS may be based on the SCS setting of the SCS-SpecificCarrierList for UL. The SCS-SpecificCarrierList may be an upper-layer parameter transmitted by the base station. In other words, the base station may transmit the UL SCS and / or DL ​​SCS to the terminal via signaling. The UL SCS and DL SCS may be indicated to the terminal independently. The terminal can identify the UL SCS and / or DL ​​SCS through the base station's signaling.

[0134] - Proposal #2

[0135] The sounding reference signal (SRS) can be configured based on three methods. For example, a base station can configure a periodic SRS, an aperiodic SRS, or a semi-persistent SRS to a terminal. The terminal can perform SRS transmission based on the configured SRS type (e.g., periodic SRS, aperiodic SRS, or semi-persistent SRS). The characteristics of a communication system supporting TDD and / or the configuration of UL subbands may vary by slot. SRS resources and / or sets of SRS resources can be configured for different symbol types (e.g., SBFD symbols and N-SBFD symbols).

[0136] When SBFD configuration 1 is indicated to the terminal and SRS resources (or sets of SRS resources) are configured for different symbol types, methods for SRS transmission may be required. In the first method, if SRS resources are configured in consecutive slots, the terminal may determine a valid SRS resource based on the symbol type in which the SRS resource is configured in the first slot of the consecutive slots (e.g., the previous slot). For example, if an SRS resource is configured in an SBFD symbol in the first slot (e.g., the first SRS occasion), the terminal may determine the SRS resource configured in the SBFD symbol as a valid SRS resource and the SRS resource configured in the N-SBFD symbol as an invalid SRS resource. The terminal may perform SRS transmission on the valid SRS resource (e.g., the SBFD symbol) and may not perform SRS transmission on the invalid SRS resource (e.g., the N-SBFD symbol). In other words, the terminal may expect not to perform SRS transmission on the invalid SRS resource.

[0137] As another example, if an SRS resource is set to an N-SBFD symbol in the first slot (e.g., the first SRS occupancy), the terminal may determine the SRS resource set to the N-SBFD symbol as a valid SRS resource and the SRS resource set to the SBFD symbol as an invalid SRS resource. The terminal may perform an SRS transmission on the valid SRS resource (e.g., the N-SBFD symbol) and may not perform an SRS transmission on the invalid SRS resource (e.g., the SBFD symbol). In other words, the terminal may expect not to perform an SRS transmission on the invalid SRS resource.

[0138] If an SRS resource (e.g., a set of SRS resources) is set to an SBFD symbol (or N-SBFD symbol) in the first slot of a series of consecutive slots, and an SRS resource is set to an N-SBFD symbol (or SBFD symbol) in a slot after the first slot of the series of consecutive slots, the terminal may perform SRS transmission in the first slot and may not perform SRS transmission in the slot after the first slot. If an SRS resource (e.g., a set of SRS resources) is set to an SBFD symbol (or N-SBFD symbol) in the first slot of a series of consecutive slots, and an SRS resource is set to an SBFD symbol (or N-SBFD symbol) in a slot after the first slot of the series of consecutive slots, the terminal may perform SRS transmission in the first slot and may perform SRS transmission in the slot after the first slot.

[0139] The terminal may ignore or apply SBFD settings (e.g., SBFD setting 1 or SBFD setting 2) differently based on the SRS type. For example, aperiodic SRS transmission may be requested in situations that are more urgent (e.g., critical situations) than periodic SRS transmission and / or semi-static SRS transmission. Therefore, if aperiodic SRS transmission is configured, the terminal may perform aperiodic SRS transmission based on SBFD setting 2. In other words, if aperiodic SRS transmission is configured, the terminal may perform aperiodic SRS transmission based on SBFD setting 2 regardless of the SBFD setting instructed to the terminal. The base station may instruct the terminal to SBFD setting 2 in consideration of aperiodic SRS transmission.

[0140] Alternatively, in the setup procedure for an SRS resource (e.g., a set of SRS resources), the base station may instruct (e.g., set) the terminal to a valid symbol type for SRS transmission. Since channel measurement is an important operation, if resources for reference signals related to channel measurement (e.g., PRS (positioning), SRS) are set to different symbol types, the terminal may be allowed to ignore the SBFD settings instructed to it and perform the transmission and reception operation of the reference signals. In other words, the terminal can be expected to use SBFD setting 2 for the transmission and reception operation of the reference signals related to channel measurement, regardless of the SBFD settings instructed to it. Alternatively, the terminal can be expected to perform an SRS transmission in the symbol type of the resource where the first SRS transmission was performed.

[0141] The methods described above (e.g., methods according to Proposal #2) may be applied in the same or similarly to the transmission of other uplink signals and / or other uplink channels (e.g., PUCCH, PUSCH). Transport block over multiple slots (TBoMS) transmission, CSI reporting, configured grant (CG) PUSCH transmission, and / or repeated PUSCH transmission may be performed based on Proposal #2.

[0142] For example, among the transmission locations for uplink iteration, one or more transmission locations set on a symbol having the same symbol type as the symbol set for the first transmission location may be determined as valid transmission resource(s). The terminal may perform uplink iteration on the valid transmission resource(s). The base station may expect uplink iteration to be performed on the valid transmission resource(s). If the first PUSCH location for PUSCH iteration is set on an SBFD symbol, the terminal may determine one or more PUSCH locations set on an SBFD symbol after the first PUSCH location as valid transmission resource(s), and determine the PUSCH location(s) set on an N-SBFD symbol as invalid transmission resource(s). The terminal may perform PUSCH iteration on the valid transmission resource(s). If the first PUSCH occupancy for PUSCH repeated transmission is set in an N-SBFD symbol, the terminal may determine one or more PUSCH occupancy(s) set in the N-SBFD symbol after the first PUSCH occupancy as valid transmission resource(s), and may determine the PUSCH occupancy(s) set in the SBFD symbol as invalid transmission resource(s). The terminal may perform PUSCH repeated transmission on the valid transmission resource(s).

[0143] - Proposal #3

[0144] Adjacent slots may contain different symbol types. For example, the first slot may contain N-SBFD symbols and the second slot may contain SBFD symbols. Or, the first slot may contain SBFD symbols and the second slot may contain N-SBFD symbols. Each transmission occupation of a CG PUSCH where repetitive transmission is not required may contain SBFD symbols and N-SBFD symbols. For a CG PUSCH, SBFD setting 2 may be indicated. Each repetition of PUSCH repetition type A (e.g., each PUSCH occupation) may contain SBFD symbols and N-SBFD symbols. For a PUSCH repetition type A, SBFD setting 2 may be indicated. Each of multiple PUSCH transmissions scheduled by a single SCI may be performed across SBFD symbols and N-SBFD symbols. Each PUSCH transmission within a single slot may be performed across SBFD symbols and N-SBFD symbols. SBFD setting 2 may be indicated for multiple PUSCH transfers scheduled by a single SCI. TBoMS transfers may be performed across SBFD symbols and N-SBFD symbols in different slots. Within a single slot, each TBoMS transfer may be performed across SBFD symbols and N-SBFD symbols. SBFD setting 2 may be indicated for TBoMS transfers.

[0145] The repetition for the uplink transmission described above can be configured without considering the symbol type. Based on the configuration of the uplink transmission repetition described above, uplink resources can be allocated to different symbol types. The size and / or location of frequency resources in N-SBFD symbols may differ from the size and / or location of frequency resources in SBFD symbols. Frequency resources allocated for uplink transmission may not be available for certain symbol types. Methods of uplink transmission are necessary to address the aforementioned problems.

[0146] FIG. 10a is a conceptual diagram illustrating embodiments of uplink transmission in different symbol types.

[0147] Referring to FIG. 10a, the terminal may use the resources (e.g., frequency resources) configured for uplink transmission as they are, regardless of the symbol type. The size of the frequency resources allocated for uplink transmission in N-SBFD symbols (e.g., the number of PRBs) may be the same as the size of the frequency resources allocated for uplink transmission in SBFD symbols (e.g., the number of PRBs). The base station may transmit time resource information and / or frequency resource information for uplink transmission to the terminal via signaling. The terminal may receive time resource information and / or frequency resource information for uplink transmission via the base station's signaling. The terminal may not use frequency resource(s) for uplink transmission that do not belong to the UL subband or UL available PRB(s) among the frequency resources configured for uplink transmission. In other words, the terminal may perform uplink transmission using frequency resource(s) that belong to the UL subband or UL available PRB(s) among the frequency resources configured for uplink transmission.

[0148] The location of the UL subband (e.g., UL available PRB(s)) may vary depending on the TDD pattern. Therefore, the location of the UL resource (e.g., PRB) may vary from slot to slot. Frequency resources for uplink transmission (e.g., PUSCH transmission) may be allocated to slots with different symbol types, and some of the frequency resources allocated for uplink transmission may belong to the UL subband in the SBFD symbol, while the remaining frequency resources may belong to the DL subband in the SBFD symbol.

[0149] Due to the position of the UL subband in the frequency domain, some of the frequency resources allocated for uplink transmission may be determined to be invalid frequency resources. The terminal may perform uplink transmission (e.g., PUSCH transmission) using UL resources allocated to N-SBFD symbols (e.g., UL symbols) of slot n, and may perform uplink transmission using UL resource(s) belonging to the UL subband among the UL resources allocated to the SBFD symbol(s) of slot n+1. The terminal may not perform uplink transmission using UL resource(s) that do not belong to the UL subband among the UL resources allocated to the SBFD symbol(s) of slot n+1 (e.g., UL resource(s) belonging to the DL subband).

[0150] According to the method described above, the utilization of UL resources may be reduced, and failure of uplink transmission may occur. To solve the aforementioned problems, an offset (e.g., RB offset) may be introduced. The offset may be used to determine frequency resources for uplink transmission in SBFD symbols. Based on the offset, frequency resources in SBFD symbols that do not belong to the UL subband may be shifted into the UL subband.

[0151] FIG. 10b is a conceptual diagram illustrating embodiments of uplink transmission in different symbol types.

[0152] Referring to FIG. 10b, the terminal can perform uplink transmission in different symbol types. The size of the frequency resource allocated for uplink transmission in N-SBFD symbols (e.g., the number of PRBs) may be the same as the size of the frequency resource allocated for uplink transmission in SBFD symbols (e.g., the number of PRBs). The base station may transmit time resource information and / or frequency resource information for uplink transmission to the terminal via signaling. The terminal may receive time resource information and / or frequency resource information for uplink transmission via the base station's signaling.

[0153] Frequency resource information may include frequency allocation information and an offset (e.g., RB offset) indicating frequency resources for uplink transmission (e.g., PUSCH transmission) across different symbol types in a single slot or consecutive slots. Frequency allocation information and the offset may be signaled to the terminal independently. Frequency allocation information may indicate frequency resources for uplink transmission (e.g., one or more PRBs). Frequency allocation information may be a bitmap or a RIV. Each bit of the bitmap may indicate one or more PRBs allocated for uplink transmission. The RIV may indicate the starting PRB (e.g., starting RB) and the number of PRBs (e.g., the number of RBs) of the frequency resources allocated for uplink transmission. When uplink transmission is performed across different symbol types, frequency allocation information may indicate frequency resources allocated to N-SBFD symbol(s), frequency resources allocated to SBFD symbol(s), or frequency resources allocated to N-SBFD symbol(s) and SBFD symbol(s).

[0154] If uplink transmission is performed across different symbol types, the offset may be a frequency offset (e.g., RB offset) between the frequency resources allocated to the first symbol type and the frequency resources allocated to the second symbol type. In the time domain, a symbol of the second symbol type may be located after a symbol of the first symbol type. If the first symbol type is an N-SBFD symbol, the second symbol type may be an SBFD symbol. If the first symbol type is an SBFD symbol, the second symbol type may be an N-SBFD symbol. The size of the frequency resources allocated to the first symbol type may be the same as the size of the frequency resources allocated to the second symbol type. The offset may be used to indicate the start or end position of the frequency resources in the SBFD symbol(s). Alternatively, the offset may be used to indicate the start or end position of the frequency resources in the N-SBFD symbol(s).

[0155] The offset may be a frequency offset (e.g., RB offset) from the lowest frequency resource (e.g., lowest PRB index, lowest subcarrier index) or the highest frequency resource (e.g., lowest PRB index, lowest subcarrier index) among the frequency resources assigned to the first symbol type to the lowest frequency resource among the frequency resources assigned to the second symbol type. Alternatively, the offset may be a frequency offset (e.g., RB offset) from the lowest frequency resource (e.g., lowest PRB index, lowest subcarrier index) or the highest frequency resource (e.g., lowest PRB index, lowest subcarrier index) among the frequency resources assigned to the first symbol type to the highest frequency resource among the frequency resources assigned to the second symbol type.

[0156] A base station may schedule uplink transmission (e.g., PUSCH transmission) across N-SBFD symbols and SBFD symbols in a single slot or consecutive slots to a terminal. In this case, the base station may transmit frequency allocation information for frequency resources in N-SBFD symbols and an offset used to determine frequency resources in SBFD symbols to the terminal via signaling. The frequency allocation information and the offset may be signaled to the terminal independently. The terminal may receive the frequency allocation information and the offset via the base station's signaling. The size of the frequency resources allocated for uplink transmission in N-SBFD symbols may be the same as the size of the frequency resources allocated for uplink transmission in SBFD symbols. The terminal may determine (e.g., verify) the frequency resources allocated for uplink transmission in N-SBFD symbols based on the frequency allocation information, and may determine (e.g., verify) the frequency resources allocated for uplink transmission in SBFD symbols by applying an offset to the start or end position of the frequency resources in N-SBFD symbols. The terminal can perform uplink transmission (e.g., PUSCH transmission) over N-SBFD symbols and SBFD symbols in determined frequency resources. The base station can determine frequency resources in N-SBFD symbols and SBFD symbols based on frequency allocation information and offsets instructed to the terminal. The base station can determine frequency resources in each of the N-SBFD symbols and SBFD symbols in the same or similar manner as the operation of the terminal described above. The base station can receive uplink transmission over N-SBFD symbols and SBFD symbols in determined frequency resources from the terminal.

[0157] In another embodiment, a base station may schedule uplink transmission (e.g., PUSCH transmission) across SBFD symbols and N-SBFD symbols in a single slot or consecutive slots to a terminal. In this case, the base station may transmit frequency allocation information for frequency resources in SBFD symbols and an offset used to determine frequency resources in N-SBFD symbols to the terminal via signaling. The frequency allocation information and the offset may be signaled to the terminal independently. The terminal may receive the frequency allocation information and the offset via the base station's signaling. The size of the frequency resources allocated for uplink transmission in SBFD symbols may be the same as the size of the frequency resources allocated for uplink transmission in N-SBFD symbols. The terminal may determine (e.g., identify) the frequency resources allocated for uplink transmission in SBFD symbols based on the frequency allocation information, and may determine (e.g., identify) the frequency resources allocated for uplink transmission in N-SBFD symbols by applying an offset to the start or end position of the frequency resources in SBFD symbols. The terminal can perform uplink transmission (e.g., PUSCH transmission) over SBFD symbols and N-SBFD symbols in determined frequency resources. The base station can determine frequency resources in SBFD symbols and N-SBFD symbols based on frequency allocation information and offsets instructed to the terminal. The base station can determine frequency resources in each of the SBFD symbols and N-SBFD symbols in the same or similar manner as the operation of the terminal described above. The base station can receive uplink transmission over SBFD symbols and N-SBFD symbols in determined frequency resources from the terminal.

[0158] Alternatively, the offset may not be set on the terminal. In this case, the terminal may determine that consecutive PRBs are used for uplink transmission in SBFD symbols, starting from the lowest frequency (e.g., lowest PRB, lowest subcarrier) or highest frequency (e.g., highest PRB, highest subcarrier) of the UL subband (e.g., UL available PRBs), uplink transmission is used for a range (e.g., size) of frequency resources indicated by the base station. The terminal may perform uplink transmission using the frequency resources determined in the SBFD symbols. The frequency resources for uplink transmission in SBFD symbols may be determined based on an implicit method. In another embodiment, the terminal may determine that consecutive PRBs are used for uplink transmission in N-SBFD symbols, starting from the lowest frequency (e.g., lowest PRB, lowest subcarrier) or highest frequency (e.g., highest PRB, highest subcarrier) of the frequency band, uplink transmission is used for a range (e.g., size) of frequency resources indicated by the base station. The terminal can perform uplink transmission using frequency resources determined from N-SBFD symbols. Frequency resources for uplink transmission in N-SBFD symbols can be determined based on an implicit method.

[0159] When a base station informs a terminal of an offset, the base station may transmit the offset to the terminal based on various signaling methods. For example, the base station may transmit the offset to the terminal based on at least one of system information, PUSCH configuration information, an RRC message, a MAC CE, or a DCI. Alternatively, the base station may transmit an RRC message containing the offset to the terminal and transmit a MAC CE or a DCI indicating the activation of the offset to the terminal. The terminal may check the offset included in the RRC message received from the base station, and upon receiving a MAC CE or a DCI indicating the activation of the offset, may apply the offset to determine frequency resources for uplink transmission. Alternatively, the base station may transmit an RRC message containing multiple offsets (e.g., a list consisting of multiple offsets) to the terminal and transmit a MAC CE or a DCI indicating one of the multiple offsets to the terminal. The terminal can check a plurality of offsets (e.g., a list) included in an RRC message received from a base station, and when a MAC CE or DCI indicating one of the plurality of offsets is received, it can determine frequency resources for uplink transmission by applying the one offset.

[0160] When an offset for determining frequency resources for uplink transmission is set in a terminal, the terminal may determine the start or end position of the frequency resources by shifting PRBs or subcarriers corresponding to the offset in the frequency domain. The frequency resources (e.g., shifted frequency resources) may belong to UL subbands (e.g., UL available PRBs). The size of the frequency resources for uplink transmission in SBFD symbols (e.g., the number of PRBs) may be the same as the size of the frequency resources allocated by the conventional method (e.g., the number of PRBs). The conventional method may be a method for allocating frequency resources for uplink transmission in N-SBFD symbols. A communication node (e.g., a base station and / or a terminal) may expect that the size of the frequency resources for uplink transmission in N-SBFD symbols is the same as the size of the frequency resources for uplink transmission in SBFD symbols. The communication node may perform uplink communication based on the above expectation.

[0161] The terminal may transmit information to the base station indicating whether the terminal supports the use of an offset to determine frequency resources for uplink transmission. The information may be transmitted to the base station via UE capability information. Depending on its capability, the terminal may perform uplink transmission based on the embodiment of FIG. 10a or the embodiment of FIG. 10b. In other words, if the terminal does not support the use of an offset, the terminal may perform uplink transmission using only frequency resources belonging to the UL subband in SBFD symbols without applying the offset. Or, if the terminal supports the use of an offset, the terminal may shift the frequency resources for uplink transmission in SBFD symbols to belong to the UL subband by applying the offset, and may perform uplink transmission using the frequency resources belonging to the UL subband (e.g., shifted frequency resources). Depending on its capability, the terminal may support at least one of the embodiment of FIG. 10a or the embodiment of FIG. 10b.

[0162] A base station may transmit information to a terminal via signaling (e.g., RRC signaling) indicating whether to apply an offset for determining frequency resources for uplink transmission. If the application of an offset is indicated, the terminal may perform uplink transmission based on the embodiment of FIG. 10b. If the application of an offset is not indicated (e.g., if not applying an offset is indicated), the terminal may perform uplink transmission based on the embodiment of FIG. 10a. Alternatively, the base station may instruct the terminal via signaling to perform a method based on the embodiment of FIG. 10a or a method based on the embodiment of FIG. 10b. The terminal may perform uplink transmission based on the method indicated by the base station (e.g., the embodiment of FIG. 10a or the embodiment of FIG. 10b).

[0163] The above-described proposal #3 can be applied for downlink communication as well as uplink communication. In other words, a communication node can determine frequency resources for downlink communication based on the embodiment of FIG. 10a or the embodiment of FIG. 10b, and can perform downlink communication using the determined frequency resources. Downlink communication may include the transmission and reception operation of a downlink signal and / or a downlink channel. Uplink communication may include the transmission and reception operation of an uplink signal and / or an uplink channel.

[0164] - Proposal #4

[0165] In SBFD symbols, frequency hopping can be performed within UL available PRBs (e.g., UL subbands) rather than within UL BWPs. Frequency resources resulting from frequency hopping can be determined based on an offset (e.g., RB offset) relative to the lowest frequency of the UL available PRBs (e.g., lowest PRB, lowest subcarrier). For example, a communication node can determine the starting PRB index (e.g., starting RB index) of the second hop resulting from frequency hopping in an SBFD symbol based on Equation 1 below.

[0166]

[0167] can be the starting PRB index of the second hop according to frequency hopping. may be the starting PRB index of the UL-available PRBs. The starting PRB index may be determined based on the lowest PRB index of the UL-available PRBs (e.g., PRB 0). Alternatively, the starting PRB index of the UL-available PRBs may be determined based on the lowest PRB index of the BWP (e.g., PRB 0, CRB (common resource block) 0). may be the total number of PRBs included in the UL-available PRBs. may be the starting PRB index of the first hop according to frequency hopping. If the first hop is located in SBFD symbols, the starting PRB index of the first hop may be determined based on the lowest PRB index of the UL available PRBs (e.g., PRB 0). If the first hop is located in N-SBFD symbols, the starting PRB index of the first hop may be determined based on the lowest PRB index of the BWP (e.g., UL BWP) (e.g., PRB 0, CRB 0). If frequency hopping is performed across different symbol types, the reference PRB for determining the starting PRB index of each hop may vary depending on the symbol type.

[0168] - Proposal #5

[0169] If synchronization is unstable or not synchronized, communication may be impossible. Rules for the transmission and reception of SSBs in N-SBFD symbols may be required for the communication node (e.g., base station and / or terminal). If a UL subband is configured based on a specific period in N-SBFD symbols or SBFD symbols, SSB resources for periodic SSB transmission may overlap with the UL subband. To resolve the aforementioned problem, if UL subband(s) are configured and the UL subband overlaps with SSB resources, the communication node may determine that the configuration of the SSB resources takes precedence over the configuration of the UL subband. The base station may expect to transmit SSBs from the SSB resources that overlap with the UL subband. The terminal may expect to receive SSBs from the SSB resources that overlap with the UL subband. In other words, the transmission and reception of SSBs from SSB resources that overlap with the UL subband may be permitted.

[0170] Considering HD (half duplex) operation, it may be stipulated that the terminal does not perform uplink transmission across the entire frequency range of symbols configured as SSB resources. Symbols configured as SSB resources (e.g., symbols used for SSB transmission) may be referred to as SSB symbols. An SSB symbol may be a symbol corresponding to an SSB position indicated by SIB1 or information included in the serving cell configuration information.

[0171] Alternatively, the base station may transmit information to the terminal via signaling (e.g., RRC message, MAC CE, and / or DCI) indicating whether an SSB resource overlapping with the UL subband is being used. In other words, the base station may transmit information to the terminal indicating whether to enable or disable SSB information in an SSB resource overlapping with the UL subband. The terminal may receive the above-mentioned information via the base station's signaling. If it is indicated that an SSB resource overlapping with the UL subband is being used (e.g., if SSB transmission is enabled in an SSB resource overlapping with the UL subband), the terminal may perform an SSB reception operation in the SSB resource. If it is indicated that an SSB resource overlapping with the UL subband is not being used (e.g., if SSB transmission is disabled in an SSB resource overlapping with the UL subband), the terminal may not perform an SSB reception operation in the SSB resource.

[0172] The embodiments proposed in this disclosure may be applied to intra-slot frequency hopping and / or inter-slot frequency hopping. The embodiments proposed in this disclosure may be applied to downlink communication as well as uplink communication.

[0173] In the present disclosure, a terminal may transmit information to a base station indicating whether it supports the function(s) proposed in the present disclosure. Information indicating whether it supports the function(s) may be included in a UE capability report. A base station may receive a UE capability report from a terminal and perform signaling and / or operations based on the information included in the UE capability information (e.g., information indicating whether it supports the function(s).

[0174] Settings for the UL subband (e.g., SBFD settings) may be transmitted via signaling (e.g., RRC signaling). SBFD settings may be transmitted after the transmission of TDD common settings. The methods proposed in this disclosure may be applied to unlicensed bands as well as licensed bands. The methods proposed in this disclosure may be applied to sidelinks and / or supplementary uplinks (SUL). For example, the methods proposed in this disclosure may be applied to determine transmit power in sidelinks and / or SULs. Each of the proposals of this disclosure may be applied independently. Or a combination of the proposals of this disclosure may be applied. Some proposals of this disclosure may be applied to other proposals. Each of the options of this disclosure may be applied independently. Or a combination of the options of this disclosure may be applied. Some options of this disclosure may be applied to other options. The proposals and / or options of this disclosure may be applied regardless of the RRC status of the terminal. 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 may perform the proposals and / or options of the present disclosure. A base station may perform the proposals and / or options of the present disclosure with respect to a terminal in an RRC idle state, a terminal in an RRC inactive state, and / or a terminal in an RRC connected state.

[0175] The channels / signals to which the proposals of the present disclosure apply may not be limited to specific channels / signals. In other words, the proposals of the present disclosure may be applied in the same or similarly to all channels / signals (e.g., all uplink channels, all uplink signals, all downlink channels, all downlink signals).

[0176] The operation of the method according to the present disclosure can be implemented as a computer-readable program or code on a computer-readable recording medium. A computer-readable recording medium includes any type of recording device in which information that can be read by a computer system is stored. Additionally, a computer-readable recording medium may be distributed across networked computer systems, allowing the computer-readable program or code to be stored and executed in a distributed manner.

[0177] In addition, computer-readable recording media may include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Program instructions may include machine code, such as that generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

[0178] Some aspects of the present disclosure have been described in the context of a device, but may also be described according to a corresponding method, wherein a block or device corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method may also be described according to a corresponding block or item or a feature of a corresponding device. Some or all of the method steps may be performed by (or using) a hardware device, such as, for example, a microprocessor, a programmable computer, or an electronic circuit. In some embodiments, at least one of the most important method steps may be performed by such a device.

[0179] A programmable logic device (e.g., a field-programmable gate array) may be used to perform some or all of the functions of the methods described in this disclosure. A field-programmable gate array may operate with a microprocessor to perform one of the methods described in this disclosure. Generally, it is preferable that the methods be performed by some hardware device.

[0180] Although the present disclosure has been described with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present disclosure without departing from the spirit and scope of the present disclosure as set forth in the following claims.

Claims

1. As a method of UE (user equipment), A step of receiving resource allocation information for uplink transmission from a base station in a first type of symbol; A step of receiving an offset for uplink transmission from the base station in a second type of symbol; A step of performing the uplink transmission in the first type of symbol using the first frequency resources indicated by the resource allocation information; and A step comprising performing the uplink transmission in the second type of symbol using second frequency resources determined by applying the offset to the first frequency resources, UE's method.

2. In Claim 1, The first type symbol and the second type symbol are consecutive in the time domain, wherein the first type symbol is an N(non)-SBFD (subband full duplex) symbol and the second type symbol is an SBFD symbol, or wherein the first type symbol is an SBFD symbol and the second type symbol is an N-SBFD symbol. UE's method.

3. In Claim 1, The above uplink transmission is performed across the first type symbol and the second type symbol within one slot or different slots, UE's method.

4. In Claim 1, The number of PRBs (physical resource blocks) included in the first frequency resources in the first type of symbol is the same as the number of PRBs included in the second frequency resources in the second type of symbol. UE's method.

5. In Claim 1, In the frequency domain, the second frequency resources start after the offset from the lowest or highest frequency of the first frequency resources, and the offset indicates one or more RBs (resource blocks). UE's method.

6. In Claim 1, The above uplink transmission is a CG (configured grant) PUSCH (physical uplink shared channel) transmission, repeated PUSCH transmission, multiple PUSCH transmissions scheduled by a single DCI (downlink control information), or a TBoMS (transport block over multiple slots) transmission, UE's method.

7. In Claim 1, One of the first type symbol and the second type symbol is an SBFD symbol, and further comprising the step of receiving from the base station at least one of a first RIV (resource indication value) of the UL (uplink) subband in the SBFD symbol or a second RIV of the DL (downlink) subband in the SBFD symbol. UE's method.

8. In Claim 7, The UL subband indicated by the first RIV is based on UL SCS (subcarrier spacing), the DL subband indicated by the second RIV is based on DL SCS, and the UL SCS and the DL SCS are independently indicated to the UE, UE's method.

9. In Claim 1, Based on the fact that the above uplink transmission is an uplink iterative transmission, one or more transmission occasions set on a symbol having the same type as the symbol set for the first transmission occasion of the above uplink iterative transmission are determined to be valid transmission resources, and the above uplink iterative transmission is performed on the valid transmission resources. UE's method.

10. As a method of base station, A step of transmitting resource allocation information for uplink transmission in a first type symbol to a UE (user equipment); A step of transmitting an offset for uplink transmission in a second type symbol to the UE; A step of receiving the uplink transmission from the UE in the first type of symbol using the first frequency resources indicated by the resource allocation information; and A method comprising the step of receiving the uplink transmission from the UE in the second type of symbol using second frequency resources determined by applying the offset to the first frequency resources, Base station method.

11. In Claim 10, The first type symbol and the second type symbol are consecutive in the time domain, wherein the first type symbol is an N(non)-SBFD (subband full duplex) symbol and the second type symbol is an SBFD symbol, or wherein the first type symbol is an SBFD symbol and the second type symbol is an N-SBFD symbol. Base station method.

12. In Claim 10, The above uplink transmission is performed across the first type symbol and the second type symbol within one slot or different slots, Base station method.

13. In Claim 10, The number of PRBs (physical resource blocks) included in the first frequency resources in the first type of symbol is the same as the number of PRBs included in the second frequency resources in the second type of symbol. Base station method.

14. In Claim 10, In the frequency domain, the second frequency resources start after the offset from the lowest or highest frequency of the first frequency resources, and the offset indicates one or more RBs (resource blocks). Base station method.

15. In Claim 10, The above uplink transmission is a CG (configured grant) PUSCH (physical uplink shared channel) transmission, repeated PUSCH transmission, multiple PUSCH transmissions scheduled by a single DCI (downlink control information), or a TBoMS (transport block over multiple slots) transmission, Base station method.

16. In Claim 10, One of the first type symbol and the second type symbol is an SBFD symbol, and further comprising the step of transmitting to the UE at least one of a first RIV (resource indication value) of the UL (uplink) subband in the SBFD symbol or a second RIV of the DL (downlink) subband in the SBFD symbol. Base station method.

17. In Claim 16, The UL subband indicated by the first RIV is based on UL SCS (subcarrier spacing), the DL subband indicated by the second RIV is based on DL SCS, and the UL SCS and the DL SCS are independently indicated to the UE, Base station method.

18. In Claim 10, Based on the fact that the above uplink transmission is an uplink iterative transmission, one or more transmission occasions set on a symbol having the same type as the symbol set for the first transmission occasion of the above uplink iterative transmission are determined to be valid transmission resources, and the above uplink iterative transmission is performed on the valid transmission resources. Base station method.

19. As UE (user equipment), It includes at least one processor, The above at least one processor is the UE, Receiving resource allocation information for uplink transmission from a base station in a first type symbol; Receive an offset for the uplink transmission from the base station in the second type of symbol; Performing the uplink transmission in the first type of symbol using the first frequency resources indicated by the resource allocation information; and Causing to perform the uplink transmission in the second type of symbol using the second frequency resources determined by applying the above offset to the first frequency resources, UE.

20. In Claim 19, The number of PRBs (physical resource blocks) included in the first frequency resources in the first type of symbol is the same as the number of PRBs included in the second frequency resources in the second type of symbol. UE.

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