Operation method of device in wireless communication system, and device using same method

Abstract

Provided are an operation method of a device in a wireless communication system, and a device using the method. The method comprises: receiving downlink data from a network in a first slot; determining a second slot in which hybrid automatic repeat request-acknowledgement (HARQ-ACK) information for the downlink data is to be transmitted to the network; and when the second slot is a full duplex (FD) slot composed of FD resources, transmitting the HARQ-ACK information in a third slot which is a half duplex (HD) slot composed of HD resources located after the FD slot.

Description

Method of operating a device in a wireless communication system and a device using the method

[0001] The present disclosure relates to a method of operating a device in a wireless communication system and a device using the method.

[0002] As more and more communication devices demand greater communication capacity, the need for improved mobile broadband communications over existing radio access technology (RAT) is emerging. Furthermore, massive Machine Type Communications (MTC), which connects numerous devices and objects to provide diverse services anytime, anywhere, is also a key issue to be considered in next-generation communications. Furthermore, communication system design that considers reliability and latency-sensitive services / terminals is being discussed. The introduction of next-generation radio access technologies that take enhanced mobile broadband communications, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) into account is being discussed. For convenience, these technologies are referred to herein as new RAT or NR.

[0003] Wireless communication systems, whether NR or later, can perform full duplex (FD) operation. FD operation allows a device to simultaneously receive and transmit within a specific time resource. This differs from half duplex (HD) operation, which allows only one of the two modes, reception and transmission, to be performed within a specific time resource.

[0004] For FD operation, i) some frequency resources in the same time resource may be allocated as downlink subbands and other frequency resources as uplink subbands (this may be referred to as subband FD, or subband-wise full duplex (SBFD), or ii) frequency resources that can be used for both downlink reception and uplink transmission in the same time resource may be allocated (this may be referred to as spectrum shared FD, or spectrum-sharing full duplex (SSFD).

[0005] Meanwhile, for time / frequency resources configured to operate as / or support FD (which may be referred to as FD resources), the channel environment may be worse than for time / frequency resources configured to operate as HD (which may be referred to as HD resources) due to cross-link interference (CLI), self-interference (SI), etc.

[0006] Therefore, when transmitting key control information, such as uplink control information (UCI), through FD resources, the receiver may not be able to successfully receive the UCI due to poor channel conditions.

[0007] Considering these points, a method and device for determining time resources for transmitting UCI in a communication system supporting FD operation are needed.

[0008] The technical problem to be solved by the present disclosure is to provide a method of operating a device in a wireless communication system and a device using the method.

[0009] A method of operating a device in a wireless communication system and a device using the method are provided. According to the method, a terminal receives downlink data from a network in a first slot, and the terminal determines a second slot in which to transmit HARQ-ACK (hybrid automatic repeat request-acknowledgement) information for the downlink data to the network. At this time, if the second slot is an FD (full duplex) slot configured with FD (full duplex) resources, the terminal is characterized in that it transmits the HARQ-ACK information in a third slot, which is an HD slot configured with HD (half duplex) resources located next to the FD slot.

[0010] In another aspect, a terminal, device, or computer-readable recording medium for executing the above method is provided.

[0011] In another aspect, a method of operating a base station and a base station using the method are provided. According to the method of operating the base station, the base station transmits downlink data to a terminal in a first slot, and the base station determines a second slot in which to receive HARQ-ACK (hybrid automatic repeat request-acknowledgement) information for the downlink data from the terminal, and when the second slot is an FD (full duplex) slot configured with FD (full duplex) resources, the base station receives the HARQ-ACK information in a third slot, which is an HD slot configured with HD (half duplex) resources located next to the FD slot.

[0012] In a wireless communication system including terminals supporting both FD and HD operations, UCI can be prevented from being transmitted via FD resources whose channel conditions may be worse than those targeted by the base station. Therefore, UCI can be reliably transmitted even in a wireless communication system supporting FD operations.

[0013] In addition, by clearly specifying which resource is used to transmit UCI when different types of resources (FD resources and HD resources) are mixed, ambiguity between the transmitting and receiving entities can be prevented.

[0014] Figure 1 illustrates a wireless communication system to which the present disclosure can be applied.

[0015] Figure 2 is a block diagram showing a radio protocol architecture for a user plane.

[0016] Figure 3 is a block diagram showing the wireless protocol structure for the control plane.

[0017] Figure 4 illustrates the system architecture of a New Generation Radio Access Network (NG-RAN) to which NR is applied.

[0018] Figure 5 illustrates the functional division between NG-RAN and 5GC.

[0019] Figure 6 illustrates a frame structure that can be applied in NR.

[0020] Figure 7 illustrates the slot structure of an NR frame.

[0021] Figure 8 illustrates a core set.

[0022] Figure 9 illustrates an example of a frame structure for a new wireless access technology.

[0023] Figure 10 illustrates the structure of a self-contained slot.

[0024] Figure 11 illustrates physical channels and general signal transmission.

[0025] Figure 12 is an example of PUSCH repetition type A.

[0026] Figure 13 is an example of PUSCH repetition type B.

[0027] Figure 14 shows examples of how to apply full duplex (FD) within a carrier.

[0028] Figure 15 shows examples where time resources operating in HD (half duplex) and time resources operating in FD (full duplex), such as SBFD or SSFD, coexist.

[0029] Figure 16 shows examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0030] Figure 17 illustrates another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0031] Figure 18 illustrates a method for transmitting HARQ-ACK information of a terminal.

[0032] Figure 19 is an example of a delayed UCI transmission method.

[0033] Figure 20 illustrates an operation method of a terminal in a wireless communication system.

[0034] Figure 21 illustrates the signaling process and operation between a base station and a terminal.

[0035] Figure 22 illustrates a wireless device applicable to the present specification.

[0036] Figure 23 illustrates an example of a signal processing module structure.

[0037] Figure 24 illustrates another example of the structure of a signal processing module within a transmission device.

[0038] FIG. 25 illustrates an example of a wireless communication device according to an implementation example of the present disclosure.

[0039] Figure 26 illustrates another example of a wireless device.

[0040] Fig. 27 illustrates a communication system (1) applicable to this specification.

[0041] In this specification, “A or B” can mean “only A,” “only B,” or “both A and B.” In other words, “A or B” in this specification can be interpreted as “A and / or B.” For example, “A, B or C” in this specification can mean “only A,” “only B,” “only C,” or “any combination of A, B, and C.”

[0042] As used herein, a slash ( / ) or a comma can mean "and / or." For example, "A / B" can mean "A and / or B." Accordingly, "A / B" can mean "only A," "only B," or "both A and B." For example, "A, B, C" can mean "A, B, or C."

[0043] In this specification, “at least one of A and B” may mean “only A,” “only B,” or “both A and B.” Additionally, in this specification, the expressions “at least one of A or B” or “at least one of A and / or B” may be interpreted identically to “at least one of A and B.”

[0044] Additionally, in this specification, “at least one of A, B and C” can mean “only A,” “only B,” “only C,” or “any combination of A, B and C.” Additionally, “at least one of A, B or C” or “at least one of A, B and / or C” can mean “at least one of A, B and C.”

[0045] Additionally, parentheses used herein may mean “for example.” Specifically, when indicated as “control information (PDCCH),” “PDCCH” may be proposed as an example of “control information.” In other words, “control information” in this specification is not limited to “PDCCH,” and “PDCCH” may be proposed as an example of “control information.” Furthermore, even when indicated as “control information (i.e., PDCCH),” “PDCCH” may be proposed as an example of “control information.”

[0046] Technical features individually described in a single drawing in this specification may be implemented individually or simultaneously.

[0047] The following drawings are intended to illustrate specific examples of the present specification. The names of specific devices and the names of specific signals, messages, and fields depicted in the drawings are provided for illustrative purposes only, and the technical features of this specification are not limited to the specific names used in the drawings.

[0048] Figure 1 illustrates a wireless communication system to which the present disclosure may be applied. This may also be referred to as an Evolved-UMTS Terrestrial Radio Access Network (E-UTRAN) or a Long Term Evolution (LTE) / LTE-A system.

[0049] E-UTRAN includes a base station (BS) 20 that provides a control plane and a user plane to a user equipment (UE) 10. The UE 10 may be fixed or mobile, and may be referred to by other terms such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), a wireless device, or a terminal. The base station (20) refers to a fixed station that communicates with the UE 10, and may be referred to by other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), or an access point.

[0050] Base stations (20) can be connected to each other via the X2 interface. The base station (20) is connected to an EPC (Evolved Packet Core, 30) via the S1 interface, more specifically, to an MME (Mobility Management Entity) via the S1-MME, and to an S-GW (Serving Gateway) via the S1-U.

[0051] The EPC (30) consists of an MME, an S-GW, and a P-GW (Packet Data Network-Gateway). The MME holds information about terminal access and capabilities, and this information is primarily used for terminal mobility management. The S-GW is a gateway with the E-UTRAN as its endpoint, and the P-GW is a gateway with the PDN as its endpoint.

[0052] The layers of the radio interface protocol between the terminal and the network can be divided into L1 (layer 1), L2 (layer 2), and L3 (layer 3) based on the three lower layers of the Open System Interconnection (OSI) standard model, which is widely known in communication systems. Among these, the physical layer belonging to layer 1 provides information transfer service using physical channels, and the RRC (Radio Resource Control) layer located in layer 3 controls radio resources between the terminal and the network. To this end, the RRC layer exchanges RRC messages between the terminal and the base station.

[0053] Figure 2 is a block diagram illustrating the radio protocol architecture for the user plane. Figure 3 is a block diagram illustrating the radio protocol architecture for the control plane. The user plane is a protocol stack for transmitting user data, and the control plane is a protocol stack for transmitting control signals.

[0054] Referring to Figures 2 and 3, the physical layer (PHY layer) provides information transfer services to upper layers using physical channels. The PHY layer is connected to its upper layer, the Medium Access Control (MAC) layer, through a transport channel. Data is transferred between the MAC layer and the PHY layer via the transport channel. Transport channels are classified based on how and with what characteristics data is transmitted over the wireless interface.

[0055] Data travels between different physical layers, i.e., between the physical layers of a transmitter and receiver, via a physical channel. This physical channel can be modulated using Orthogonal Frequency Division Multiplexing (OFDM) and utilizes time and frequency as radio resources.

[0056] The MAC layer's functions include mapping between logical channels and transport channels, and multiplexing / demultiplexing MAC service data units (SDUs) belonging to logical channels into transport blocks provided as physical channels on the transport channels. The MAC layer provides services to the RLC (Radio Link Control) layer through logical channels.

[0057] The functions of the RLC layer include concatenation, segmentation, and reassembly of RLC SDUs. To guarantee the various Quality of Service (QoS) required by radio bearers (RBs), the RLC layer provides three operating modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0058] The RRC (Radio Resource Control) layer is defined only in the control plane. The RRC layer is responsible for controlling logical, transport, and physical channels, including the configuration, reconfiguration, and release of radio bearers. An RB is a logical path provided by Layer 1 (PHY layer) and Layer 2 (MAC layer, RLC layer, PDCP layer) for data transmission between a terminal and the network.

[0059] The functions of the Packet Data Convergence Protocol (PDCP) layer in the user plane include the transmission of user data, header compression, and ciphering. The functions of the Packet Data Convergence Protocol (PDCP) layer in the control plane include the transmission of control plane data and encryption / integrity protection.

[0060] Establishing an RB refers to the process of defining the characteristics of the radio protocol layer and channel to provide a specific service, and setting specific parameters and operating methods for each. RBs can be further divided into two types: signaling RBs (SRBs) and data RBs (DRBs). SRBs are used as a conduit for transmitting RRC messages in the control plane, while DRBs are used as conduits for transmitting user data in the user plane.

[0061] When an RRC connection is established between the RRC layer of the terminal and the RRC layer of the E-UTRAN, the terminal is in an RRC connected state, otherwise it is in an RRC idle state.

[0062] Downlink transmission channels that transmit data from the network to the terminal include the Broadcast Channel (BCH), which transmits system information, and the downlink Shared Channel (SCH), which transmits user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services may be transmitted through the downlink SCH or a separate downlink Multicast Channel (MCH). Meanwhile, uplink transmission channels that transmit data from the terminal to the network include the Random Access Channel (RACH), which transmits initial control messages, and the uplink Shared Channel (SCH), which transmits user traffic or control messages.

[0063] Logical channels that are located above the transport channel and are mapped to the transport channel include BCCH (Broadcast Control Channel), PCCH (Paging Control Channel), CCCH (Common Control Channel), MCCH (Multicast Control Channel), and MTCH (Multicast Traffic Channel).

[0064] A physical channel consists of multiple OFDM symbols in the time domain and multiple subcarriers in the frequency domain. A single subframe consists of multiple OFDM symbols in the time domain. A resource block is a resource allocation unit and consists of multiple OFDM symbols and multiple subcarriers. Additionally, each subframe can use specific subcarriers of specific OFDM symbols (e.g., the first OFDM symbol) of the subframe for the Physical Downlink Control Channel (PDCCH), i.e., the L1 / L2 control channel. A Transmission Time Interval (TTI) is a unit time for subframe transmission.

[0065] Below, we describe new radio access technology (new RAT, NR).

[0066] As more and more communication devices demand greater communication capacity, the need for improved mobile broadband communications over existing radio access technology (RAT) is emerging. Furthermore, massive Machine Type Communications (MTC), which connects numerous devices and objects to provide diverse services anytime, anywhere, is also a key issue to be considered in next-generation communications. Furthermore, communication system design that considers reliability and latency-sensitive services / terminals is being discussed. The introduction of next-generation radio access technologies that take enhanced mobile broadband communications, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) into account is being discussed. For convenience, these technologies are referred to herein as new RAT or NR.

[0067] Figure 4 illustrates the system architecture of a New Generation Radio Access Network (NG-RAN) to which NR is applied.

[0068] Referring to FIG. 4, the NG-RAN may include gNBs and / or eNBs that provide user plane and control plane protocol termination to the UE. FIG. 4 illustrates a case where only gNBs are included. The gNBs (eNBs) are connected to each other via Xn interfaces. The gNBs and eNBs are connected to the 5th generation core network (5G Core Network: 5GC) via the NG interface. More specifically, they are connected to the access and mobility management function (AMF) via the NG-C interface, and to the user plane function (UPF) via the NG-U interface.

[0069] Figure 5 illustrates the functional division between NG-RAN and 5GC.

[0070] Referring to FIG. 5, the gNB can provide functions such as inter-cell radio resource management (Inter Cell RRM), radio bearer management (RB control), connection mobility control (Connection Mobility Control), radio admission control (Radio Admission Control), measurement configuration and provision, and dynamic resource allocation. The AMF can provide functions such as NAS security and idle state mobility processing. The UPF can provide functions such as mobility anchoring and PDU processing. The SMF (Session Management Function) can provide functions such as terminal IP address allocation and PDU session control.

[0071] Figure 6 illustrates a frame structure that can be applied in NR.

[0072] Referring to FIG. 6, a radio frame (hereinafter abbreviated as a frame) can be used for uplink and downlink transmission in NR. A frame has a length of 10 ms and can be defined as two 5 ms half-frames (Half-Frames, HF). A half-frame can be defined as five 1 ms sub-frames (Subframes, SF). A sub-frame can be divided into one or more slots, and the number of slots in a sub-frame depends on the Subcarrier Spacing (SCS). Each slot contains 12 or 14 OFDM (A) symbols depending on the CP (cyclic prefix). When a normal CP is used, each slot contains 14 symbols. When an extended CP is used, each slot contains 12 symbols. Here, the symbols can include an OFDM symbol (or a CP-OFDM symbol), an SC-FDMA symbol (or a DFT-s-OFDM symbol).

[0073] Table 1 below illustrates the subcarrier spacing configuration μ (also referred to as subcarrier spacing configuration).

[0074] [Table 1]

[0075]

[0076] Table 2 below shows the number of slots (N) in a frame according to the subcarrier spacing setting μ. frame,μ slot ), number of slots in a subframe (N subframe,μ slot ), number of symbols in the slot (N slot symb ) are examples.

[0077] [Table 2]

[0078]

[0079] In Fig. 6, examples are given for μ=0, 1, 2, and 3.

[0080] Table 2-1 below illustrates that when extended CP is used, the number of symbols per slot, the number of slots per frame, and the number of slots per subframe change depending on the SCS.

[0081] [Table 2-1]

[0082]

[0083] In an NR system, OFDM(A) numerologies (e.g., SCS, CP length, etc.) may be set differently between multiple cells that are merged into a single terminal. Accordingly, the (absolute time) interval of a time resource (e.g., SF, slot, or TTI) (conveniently referred to as TU (Time Unit)) consisting of the same number of symbols may be set differently between the merged cells.

[0084] Figure 7 illustrates a slot structure.

[0085] A slot can contain multiple symbols in the time domain. For example, in the case of a normal CP, one slot can contain 14 symbols (or 7 symbols), but in the case of an extended CP, one slot can contain 12 symbols (or 6 symbols). A carrier can contain multiple subcarriers in the frequency domain. A Resource Block (RB) can be defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A Bandwidth Part (BWP) can be defined as multiple consecutive (P)RBs in the frequency domain, and can correspond to a single numerology (e.g., SCS, CP length, etc.). A carrier can contain up to N (e.g., 5) BWPs. Data communication is performed through activated BWPs, and only one BWP can be activated for a single terminal. In the resource grid, each element is referred to as a Resource Element (RE), to which one complex symbol can be mapped.

[0086] A PDCCH (physical downlink control channel) may be composed of one or more CCEs (control channel elements) as shown in Table 3 below.

[0087] [Table 3]

[0088]

[0089] That is, the PDCCH can be transmitted through a resource consisting of 1, 2, 4, 8, or 16 CCEs. Here, the CCEs are composed of 6 REGs (resource element groups), and one REG consists of one resource block in the frequency domain and one OFDM (orthogonal frequency division multiplexing) symbol in the time domain.

[0090] Monitoring refers to decoding each PDCCH candidate according to the DCI (downlink control information) format. The terminal monitors a set of PDCCH candidates in one or more core sets (CORESETs, described below) on the active DL BWP of each activated serving cell for which PDCCH monitoring is configured, according to the corresponding search space set.

[0091] In NR, a new unit called a control resource set (CORESET) can be introduced. A terminal can receive PDCCHs in a CORESET.

[0092] Figure 8 illustrates a core set.

[0093] Referring to Figure 8, the coreset is N in the frequency domain. CORESET RB It consists of N resource blocks and is in the time domain. CORESET symb ∈ {1, 2, 3} symbols. N CORESET RB, N CORESET symb can be provided by the base station via upper layer signals. As illustrated in Fig. 8, a core set may include multiple CCEs (or REGs).

[0094] A terminal may attempt PDCCH detection in units of 1, 2, 4, 8, or 16 CCEs within a core set. One or more CCEs for which PDCCH detection can be attempted may be referred to as PDCCH candidates.

[0095] A terminal can be configured with multiple core sets.

[0096] In conventional wireless communication systems (e.g., LTE / LTE-A), the control domain spans the entire system bandwidth used by the base station. Except for some terminals that support only narrow bandwidths (e.g., eMTC / NB-IoT terminals), all terminals must be able to receive radio signals across the entire system bandwidth of the base station to properly receive / decode the control information transmitted by the base station.

[0097] In contrast, NR introduces the aforementioned core set. A core set is a radio resource for control information that a terminal must receive. It can utilize only a portion of the system bandwidth in the frequency domain, rather than the entire bandwidth. Furthermore, it can utilize only a portion of the symbols within a slot in the time domain. The base station can assign a core set to each terminal and transmit control information through the assigned core set. In NR, a terminal can receive control information from the base station without necessarily receiving the entire system bandwidth.

[0098] The core set may include a terminal-specific core set for transmitting terminal-specific control information and a common core set for transmitting control information common to all terminals.

[0099] Meanwhile, in NR, depending on the application field, high reliability may be required, and in such a situation, the target block error rate (BLER) for downlink control information (DCI) transmitted through a downlink control channel (e.g., physical downlink control channel: PDCCH) may be significantly lower than in the prior art. One example of a method for satisfying such a requirement requiring high reliability is to reduce the amount of content included in the DCI and / or increase the amount of resources used when transmitting the DCI. In this case, the resources may include at least one of time domain resources, frequency domain resources, code domain resources, and spatial domain resources.

[0100] The following technologies / features can be applied in NR:

[0101] Self-contained subframe structure

[0102] Figure 9 illustrates an example of a frame structure for a new wireless access technology.

[0103] In NR, for the purpose of minimizing latency, a structure in which a control channel and a data channel are time-division multiplexed (TDM) within one TTI, as shown in Fig. 9, can be considered as one of the frame structures.

[0104] Figure 9 shows an example in which a downlink control region is located at the front of the TTI and an uplink control region is located at the back of the TTI. The region between the downlink control region and the uplink control region can be used for downlink data (DL data) transmission or uplink data (UL data) transmission. A characteristic of this structure is that downlink (DL) reception and uplink (UL) transmission are sequentially performed within a single subframe / slot, so that DL data can be received and UL ACK / NACK (Acknowledgement / Not-acknowledgement) can be transmitted within a single subframe / slot. As a result, the time required for data retransmission when a data transmission error occurs is reduced, thereby minimizing the latency of the final data transmission.

[0105] In this way, in a data and control TDMed subframe structure, a time gap is required for the base station and terminal to transition from transmission mode to reception mode or from reception mode to transmission mode. To this end, some OFDM symbols at the point of transition from DL to UL in a self-contained subframe structure can be set as a guard period (GP).

[0106] Figure 10 illustrates the structure of a self-contained slot.

[0107] In an NR system, a single slot may contain a DL control channel, DL or UL data, and a UL control channel. For example, the first N symbols in a slot may be used to transmit a DL control channel (hereinafter, referred to as a DL control region), and the last M symbols in the slot may be used to transmit a UL control channel (hereinafter, referred to as a UL control region). N and M are each integers greater than or equal to 0. A resource region (hereinafter, referred to as a data region) between the DL control region and the UL control region may be used for DL ​​data transmission or UL data transmission. As an example, the following configuration may be considered. Each section is listed in chronological order.

[0108] 1. DL only configuration

[0109] 2. UL only configuration

[0110] 3. Mixed UL-DL configuration

[0111] - DL area + GP (Guard Period) + UL control area

[0112] - DL control area + GP + UL area

[0113] DL area: (i) DL data area, (ii) DL control area + DL data area

[0114] UL domain: (i) UL data domain, (ii) UL data domain + UL control domain

[0115] In the DL control region, a PDCCH can be transmitted, and in the DL data region, a PDSCH (physical downlink shared channel) can be transmitted. In the UL control region, a PUCCH (physical uplink control channel) can be transmitted, and in the UL data region, a PUSCH (physical uplink shared channel) can be transmitted. In the PDCCH, downlink control information (DCI), such as DL data scheduling information and UL data scheduling information, can be transmitted. In the PUCCH, uplink control information (UCI), such as ACK / NACK (Positive Acknowledgement / Negative Acknowledgement) information for DL ​​data, CSI (Channel State Information) information, and SR (Scheduling Request), can be transmitted. GP provides a time gap when a base station and a terminal switch from transmission mode to reception mode or from reception mode to transmission mode. Some symbols at the time of switching from DL to UL within a subframe can be set as GP.

[0116] Analog Beamforming #1

[0117] In millimeter wave (mmW), the wavelength is shortened, allowing for the installation of multiple antenna elements in the same area. That is, in the 30 GHz band, the wavelength is 1 cm, allowing for a total of 100 antenna elements to be installed in a two-dimensional array at 0.5 wavelength (lambda) intervals on a 5 x 5 cm panel. Therefore, in mmW, multiple antenna elements are used to increase beamforming (BF) gain, thereby increasing coverage or throughput.

[0118] In this case, if there is a transceiver unit (TXRU) that allows transmission power and phase control for each antenna element, independent beamforming is possible for each frequency resource. However, it is not practical in terms of cost to install a TXRU for all 100 or so antenna elements. Therefore, a method of mapping multiple antenna elements to a single TXRU and controlling the direction of the beam with an analog phase shifter is being considered. This analog beamforming method has the disadvantage of being unable to perform frequency-selective beamforming because it can only create one beam direction for the entire band.

[0119] Hybrid beamforming (hybrid BF), which has B TXRUs, which is less than Q antenna elements, can be considered as an intermediate form between digital beamforming (Digital BF) and analog beamforming (Analog BF). In this case, depending on the connection method of the B TXRUs and Q antenna elements, the number of beam directions that can be transmitted simultaneously is limited to B or fewer.

[0120] Analog Beamforming #2

[0121] In NR systems, when multiple antennas are used, a hybrid beamforming technique that combines digital beamforming and analog beamforming is emerging. In this case, analog beamforming (or RF beamforming) performs precoding (or combining) at the RF end, which has the advantage of achieving performance close to digital beamforming while reducing the number of RF chains and D / A (or A / D) converters. For convenience, the hybrid beamforming structure can be expressed as N TXRUs and M physical antennas. Then, the digital beamforming for L data layers to be transmitted from the transmitter can be expressed as an N by L matrix, and the N converted digital signals are converted into analog signals through the TXRU, and then analog beamforming expressed as an M by N matrix is ​​applied.

[0122] System information of an NR system can be transmitted in a broadcasting manner. At this time, analog beams belonging to different antenna panels within one symbol can be transmitted simultaneously, and a method of introducing a beam reference signal (BRS), which is a reference signal (RS) transmitted by applying a single analog beam (corresponding to a specific antenna panel) to measure a channel for each analog beam, is being discussed. The BRS can be defined for multiple antenna ports, and each antenna port of the BRS can correspond to a single analog beam. At this time, unlike the BRS, a synchronization signal or xPBCH can be transmitted by applying all analog beams within an analog beam group so that any terminal can receive it well.

[0123] In NR, a synchronization signal block (SSB, or may be referred to as a synchronization signal and physical broadcast channel (SS / PBCH) in the time domain) may be composed of four OFDM symbols numbered in ascending order from 0 to 3 within the synchronization signal block, and a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a PBCH associated with a demodulation reference signal (DMRS) may be mapped to the symbols. As described above, the synchronization signal block may also be referred to as an SS / PBCH block.

[0124] In NR, multiple synchronization signal blocks can be transmitted at different times, and SSB can be used to perform initial access (IA), serving cell measurement, etc. Therefore, when the transmission timing and resources overlap with other signals, it is desirable to transmit SSB preferentially. To achieve this, the network can broadcast SSB transmission timing and resource information or indicate it through UE-specific RRC signaling.

[0125] NR can perform beam-based transmission and reception operations. If the reception performance of the current serving beam degrades, a process called beam failure recovery (BFR) can be used to find a new beam.

[0126] Since BFR is not a process for declaring an error / failure in the link between the network and the terminal, it can be assumed that the connection with the current serving cell is maintained even when the BFR process is performed. During the BFR process, measurements are performed on different beams set by the network (a beam can be expressed as a CSI-RS port or an SSB (synchronization signal block) index, etc.) and the best beam for the terminal is selected. The terminal can proceed with the BFR process by performing the RACH process associated with the beam with the best measurement result.

[0127] Now, we will describe the Transmission Configuration Indicator (TCI) state. The TCI state can be set for each core set of the control channel, and parameters for determining the terminal's receive (Rx) beam can be determined based on the TCI state.

[0128] For each downlink bandwidth portion (DL BWP) of a serving cell, a terminal may be configured with up to three core sets. Additionally, for each core set, the terminal may be provided with the following information:

[0129] 1) Coreset index p (e.g., one from 0 to 11, where the index of each coreset can be uniquely determined among the BWPs of a serving cell),

[0130] 2) PDCCH DM-RS scrambling sequence initialization value,

[0131] 3) Interval in the time domain of the core set (can be given in symbol units),

[0132] 4) A set of resource blocks,

[0133] 5) CCE-to-REG mapping parameters,

[0134] 6) Antenna port quasi co-location (QCL) information indicating quasi co-location (QCL) information of DM-RS antenna ports for PDCCH reception in each core set (from a set of antenna port quasi co-locations provided by a higher layer parameter called 'TCI-State');

[0135] 7) Indicating the presence or absence of a transmission configuration indication (TCI) field for a specific DCI format transmitted by PDCCH in the core set, etc.

[0136] Let's explain QCL. If the characteristics of the channel through which a symbol on one antenna port is transmitted can be inferred from the characteristics of the channel through which a symbol on another antenna port is transmitted, then the two antenna ports are said to be in quasi-co-location (QCL). For example, if two signals (A and B) are transmitted from the same transmit antenna array with identical / similar spatial filters applied, the two signals may experience identical / similar channel conditions. From the receiver's perspective, if one of the two signals is received, the channel characteristics of the received signal can be used to detect the other signal.

[0137] In this sense, the fact that A and B are QCL may mean that A and B experienced similar channel conditions, and thus, the channel information estimated to detect A is also useful for detecting B. Here, the channel conditions may be defined by, for example, Doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters, etc.

[0138] The 'TCI-State' parameter associates one or two downlink reference signals with a corresponding QCL type (there are QCL types A, B, C, and D, see Table 4).

[0139] [Table 4]

[0140]

[0141] Each 'TCI-State' may include parameters for establishing a quasi-colocation (QCL) relationship between one or two downlink reference signals and a DM-RS port of a PDSCH (or PDCCH), or a CSI-RS port of a CSI-RS resource.

[0142] Meanwhile, in each DL BWP configured for a terminal in a serving cell, the terminal may be provided with up to 10 search space sets. For each search space set, the terminal may be provided with at least one of the following pieces of information.

[0143] 1) Search space set index s (0≤s<40), 2) Association between core set P and search space set s, 3) PDCCH monitoring period and PDCCH monitoring offset (slot unit), 4) PDCCH monitoring pattern within a slot (e.g., indicating the first symbol of the core set within a slot for PDCCH monitoring), 5) Number of slots in which search space set s exists, 6) Number of PDCCH candidates per CCE aggregation level, 7) Information indicating whether search space set s is CSS (common search space) or USS (UE-specific search space), etc.

[0144] In NR, core set #0 can be configured by PBCH (or terminal-specific signaling for handover, PSCell configuration, or BWP configuration). The search space (SS) set #0 configured by PBCH can have different monitoring offsets (e.g., slot offset, symbol offset) for each associated SSB. This may be necessary to minimize the search space occasions that the terminal must monitor. Alternatively, it may also be necessary to provide a beam sweeping control / data area that can transmit control / data for each beam so that communication with the terminal can be continuously performed in a situation where the best beam of the terminal dynamically changes.

[0145] Figure 11 illustrates physical channels and general signal transmission.

[0146] Referring to Figure 11, in a wireless communication system, a terminal receives information from a base station via the downlink (DL), and the terminal transmits information to the base station via the uplink (UL). The information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels exist depending on the type and purpose of the information they transmit and receive.

[0147] When a terminal is powered on again from a powered-off state or newly enters a cell, it performs an initial cell search operation, such as synchronizing with the base station (S11). To this end, the terminal receives the PSCH (Primary Synchronization Channel) and SSCH (Secondary Synchronization Channel) from the base station to synchronize with the base station and obtain information such as the cell ID (cell identity). In addition, the terminal can obtain broadcast information within the cell by receiving the PBCH (Physical Broadcast Channel) from the base station. In addition, the terminal can receive the DL RS (Downlink Reference Signal) during the initial cell search phase to check the downlink channel status.

[0148] (Initial) cell search can be defined as a procedure in which a terminal acquires time and frequency synchronization with a cell and detects the cell ID of the cell. Cell search can be based on the primary synchronization signal and secondary synchronization signal of the cell, and the PBCH DMRS.

[0149] A terminal that has completed initial cell search can obtain more specific system information by receiving a PDCCH (Physical Downlink Control Channel) and a corresponding PDSCH (Physical Downlink Control Channel) (S12).

[0150] Thereafter, the terminal can perform a random access procedure (Random Access Procedure) to complete connection to the base station (S13-S16). Specifically, the terminal can transmit a preamble through a Physical Random Access Channel (PRACH) (S13) and receive a Random Access Response (RAR) for the preamble through a PDCCH and a corresponding PDSCH (S14). Thereafter, the terminal can transmit a Physical Uplink Shared Channel (PUSCH) using scheduling information in the RAR (S15) and perform a contention resolution procedure (Contention Resolution Procedure) such as a PDCCH and a corresponding PDSCH (which can be considered a process of receiving a contention resolution message) (S16).

[0151] A terminal that has performed the above-described procedure can then perform PDCCH / PDSCH reception (S17) and PUSCH / PUCCH (Physical Uplink Control Channel) transmission (S18) as general uplink / downlink signal transmission procedures. Control information that the terminal transmits to the base station is referred to as UCI (Uplink Control Information). UCI includes HARQ ACK / NACK (Hybrid Automatic Repeat and reQuest Acknowledgement / Negative-ACK), SR (Scheduling Request), CSI (Channel State Information), etc. CSI includes CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indication), etc. UCI is generally transmitted through PUCCH, but can be transmitted through PUSCH when control information and data must be transmitted simultaneously. In addition, the terminal can aperiodically transmit UCI through PUSCH according to a request / instruction of the network.

[0152] To enable reasonable battery consumption when BA (bandwidth adaptation) is configured, only one uplink BWP and one downlink BWP, or only one downlink / uplink BWP pair, for each uplink carrier can be activated at a time within an active serving cell, while all other BWPs configured in the UE are deactivated. In deactivated BWPs, the UE does not monitor the PDCCH and does not transmit on the PUCCH, PRACH, and UL-SCH.

[0153] For BA, the receive and transmit bandwidth of the terminal need not be as wide as the cell bandwidth and can be adjusted: the width can be commanded to change (e.g., shrinking during periods of low activity to save power), the location in the frequency domain can be moved (e.g., to increase scheduling flexibility), and the subcarrier spacing can be commanded to change (e.g., to allow different services). A subset of the total cell bandwidth of a cell is referred to as a bandwidth part (BWP), and a BA is obtained by setting BWP(s) to the terminal and notifying the terminal which of the set BWPs is currently active. Once a BA is set, the terminal only needs to monitor the PDCCH on one active BWP. That is, there is no need to monitor the PDCCH on the entire downlink frequency of the cell. A BWP inactive timer (independent of the DRX inactive timer described above) is used to switch an active BWP to a default BWP: the timer is restarted upon successful PDCCH decoding, and a switch to the default BWP occurs when the timer expires.

[0154] Below, we describe the integrated access and backhaul link (IAB). For convenience, the proposed approach is based on the new RAT (NR) system. However, the scope of the proposed approach can be expanded to include other systems, such as 3GPP LTE / LTE-A systems, in addition to NR systems.

[0155] One potential technology that aims to enable future cellular network deployment scenarios and applications is support for wireless backhaul and relay links, enabling flexible and very dense deployment of NR cells without the need to proportionally densify the transport network.

[0156] The expected availability of greater bandwidth in NR compared to LTE (e.g., in the mmWave spectrum), along with the native deployment of massive MIMO or multi-beam systems, creates opportunities for the development and deployment of integrated access and backhaul links. This allows for easier deployment of dense networks of self-backhauled NR cells in a more integrated manner by establishing multiple control and data channels / procedures defined to provide connectivity or access to terminals. Such systems are referred to as integrated access and backhaul links (IAB).

[0157] In this disclosure, the following are defined:

[0158] - AC(x): Access link between node(x) and terminal(s).

[0159] - BH(xy): Backhaul link between node(x) and node(y).

[0160] At this time, the node may refer to a DgNB (donor gNB) or a relay node (RN). Here, the DgNB or donor node may be a gNB that provides a function to support backhaul for IAB nodes.

[0161] When relay node 1 and relay node 2 exist, and relay node 1 is connected to relay node 2 via a backhaul link and relays data transmitted and received to relay node 2, relay node 1 is called the parent node of relay node 2, and relay node 2 is called the child node of relay node 1.

[0162] <PUSCH 반복(repetitions)>

[0163] PUSCH repetition types A and B were introduced in the standard specifications (e.g., NR Rel-15 / 16). Transmission is performed as follows depending on the PUSCH repetition type.

[0164] 1) PUSCH repetition type A

[0165] Figure 12 is an example of PUSCH repetition type A.

[0166] Referring to FIG. 12, PUSCH repetition type A is a slot-based PUSCH repetition transmission, and repetition is performed with the same PUSCH transmission start symbol position and PUSCH transmission symbol length for each slot, as illustrated in FIG. 12. At this time, if an invalid symbol that cannot be used for PUSCH transmission exists among the symbol resources constituting a specific PUSCH repetition, the transmission of the corresponding PUSCH repetition is dropped and not performed. For example, when a total of four PUSCH repetition transmissions of Rep0, Rep1, Rep2, and Rep3 are performed in slots N, N+1, N+2, and N+3 (one PUSCH repetition is transmitted in each slot), if an invalid symbol is included in the symbol resources constituting Rep1, the transmission of Rep1 is dropped, and only the transmissions of Rep0, Rep2, and Rep3 are performed. Therefore, the actual number of repetitions performed may be less than the set number of repetitions.

[0167] For PUSCH repetition type A, frequency hopping can be configured for the UE by upper layer parameters. One of two frequency hopping modes can be configured.

[0168] i) Frequency hopping within a slot is applicable to single slot and multi-slot PUSCH transmission.

[0169] ii) Inter-slot frequency hopping is applicable to multi-slot PUSCH transmission.

[0170] 2) PUSCH repetition type B

[0171] Figure 13 is an example of PUSCH repetition type B.

[0172] Referring to Fig. 13, PUSCH repetition type B is repeated in units of the symbol length in which the actual PUSCH is transmitted. For example, as in (a) of Fig. 13, when the PUSCH is transmitted through 10 symbols, PUSCH repetition is performed in units of 10 consecutive symbols. At this time, the repetition that determines the PUSCH repetition transmission time resource without considering slot boundaries, invalid symbols, etc. is called nominal repetition. In Fig. 13 (a), three nominal repetitions (N0, N 1, An example is shown where N2 is set.

[0173] However, in the case of actual PUSCH repetition, a single PUSCH cannot be transmitted while including a slot boundary. That is, if a nominal PUSCH transmission includes a slot boundary (e.g., N0, N2 in (a) of FIG. 13), two actual repetitions are performed with the slot boundary as the boundary, as in (b) of FIG. 13. For example, a nominal repetition N0 is performed with two actual repetitions, such as A0, A1, with the slot boundary as the boundary.

[0174] Additionally, a single PUSCH transmission can only be performed using consecutive symbols. If an invalid symbol exists in the time resource where a PUSCH repetition should be transmitted, the actual repetition is formed using consecutive symbols with the invalid symbol as the boundary. For example, if symbols #0 to #9 constitute a nominal repetition and symbols #3 to #5 are invalid symbols, symbols #0 to #2 and symbols #6 to #9, excluding the invalid symbol, each constitute an actual repetition.

[0175] Invalid symbols may include the following:

[0176] i) Downlink symbol set by semi-static TDD UL-DL setting,

[0177] ii) an invalid symbol pattern set by RRC (which may be set by the invalid symbol pattern indicator);

[0178] iii) SSB symbol set by SIB1, SSB symbol set by 'ServngCellConfigCommon',

[0179] iv) Symbol for PDCCH for SIB1,

[0180] v) Invalid symbol for DL-UL switching set by RRC.

[0181] If a symbol that cannot be used for PUSCH transmission (e.g., a DL symbol indicated by DCI format 2_0) is included within one actual repetition resource, the corresponding actual repetition transmission is dropped and not performed.

[0182] Now, we describe full duplex operation.

[0183] 5G is giving rise to new service types, such as extended reality (XR), AI-based services, and self-driving cars. These services feature dynamic traffic in both downlink (DL) and uplink (UL) directions, and require low latency for traffic transmission (e.g., packets). 5G services will experience explosive growth in traffic to support these diverse new use cases.

[0184] Existing semi-static or dynamic TDD UL / DL configurations suffer from transmission delays and interference between operators. Existing FDD schemes also face limitations in efficient frequency resource utilization in the DL / UL directions. Therefore, the introduction of full-duplex operation within a single carrier is being discussed to achieve low latency and efficient resource utilization in NR.

[0185] Figure 14 shows examples of how to apply full duplex within a carrier.

[0186] Referring to FIG. 14, in the full duplex method, subband-wise full duplex (hereinafter, referred to as subband full duplex or SBFD) as in (a) of FIG. 14 and spectrum-sharing full duplex (hereinafter, referred to as SSFD) as in (b) of FIG. 14 can be considered.

[0187] In the case of SBFD, DL and UL transmission and reception are performed through different frequency resources within the same carrier (e.g., carrier #0). That is, different frequency resources are used for DL ​​and UL for the same time resource.

[0188] In SSFD, DL and UL transmission and reception are performed through the same frequency resources or overlapping frequency resources within the same carrier (e.g., carrier #0). That is, DL and UL can use the same or overlapping frequency resources for the same time resource.

[0189] This full-duplex (FD) operation can also be combined with existing half-duplex (HD) operation. For example, among the time resources used for existing half-duplex-based TDD operation, some of the time resources can be used for full-duplex operation. For example, SBFD or SSFD operation can be performed on the time resources performing full-duplex operation.

[0190] Figure 15 shows examples where time resources operating in HD (half duplex) and time resources operating in FD (full duplex), such as SBFD or SSFD, coexist.

[0191] In (a) of Fig. 15, some time resources operating in SBFD are indicated as SBFD, and time resources operating in half-duplex are indicated as HD. In (b) of Fig. 15, some time resources operating in SSFD are indicated as SSFD, and time resources operating in half-duplex are indicated as HD. The unit of the time resource may be, for example, a slot or a symbol.

[0192] In a time resource operating under SBFD, some frequency resources are used as DL resources, while others are used as UL resources. Between the DL and UL frequency resources, there may be a guard subband that is unused for both DL and UL and remains empty. The guard subband may also be referred to by other terms, such as guard frequency resources or guard subcarrier(s).

[0193] In a time resource operating in SSFD, the entire frequency resource can be used for both DL and UL. Alternatively, to reduce the impact of interference from other adjacent carriers (which may be referred to as adjacent carrier interference (ACI)), some frequency resources at one or both ends of the carrier can be left unused for DL ​​and / or UL. That is, one or both ends of the carrier can be used as guard bands (guard subbands) that are not used for both DL and UL. Alternatively, to reduce the impact of ACI on UL reception, one or both ends of the carrier can be used exclusively for DL ​​transmission.

[0194] In this disclosure, a slot resource operating in half-duplex is referred to as an HD slot, and a slot resource operating in SBFD and a slot resource operating in SSFD are referred to as an SBFD slot (SBFD slot) and an SSFD slot (SSFD slot), respectively. In addition, an SSFD slot and an SSFD slot are collectively referred to as an FD slot.

[0195] In the present disclosure, in a time resource operating as FD, a frequency resource operating as DL among the entire frequency resources is conveniently called a DL subband, and a frequency resource operating as UL may also be called a UL subband.

[0196] In full-duplex operation, both the base station and the terminal can perform full-duplex operation. That is, both the base station and the terminal can simultaneously transmit and receive DL and UL using the same or different frequency resources in the same time resource.

[0197] Alternatively, only the base station can perform full-duplex operation, while the terminals can perform half-duplex operation. The base station can simultaneously transmit and receive DL and UL signals using the same or different frequency resources in the same time resource, but the terminals perform only DL reception or UL transmission in specific time resources. In this case, the base station performs full-duplex operation by performing DL transmission and UL reception with different terminals at the same time.

[0198] The present disclosure assumes that the base station performs / supports full duplex operation, while the terminal performs / supports half duplex operation. However, the present disclosure can also be applied to cases where both the base station and the terminal perform / support full duplex operation.

[0199] <A. SBFD 및 SSFD 동작을 위한 DL / UL 시간 / 주파수 자원의 특성>

[0200] A cell (base station) can perform both DL transmission and UL reception in the same time resource in a FD manner, such as SBFD or SSFD. For example, the base station can perform HD operation in the first time resource and FD operation in the second time resource (which may be any time resource other than the first time resource).

[0201] Through this operation, the network can change the time resource for performing transmission and reception between the first time resource and the second time resource depending on the type of signal / channel being transmitted and received or the terminal performing the transmission and reception. For example, in the case of important signals / channels (e.g., SSB, PRACH) that require high transmission and reception performance with less influence from interference, the resources can be set to transmit and receive only on the first time resource that operates only in half duplex. This allows the transmission and reception performance of the corresponding signals / channels to be maintained while applying full duplex to the cell. Alternatively, in the case of a terminal that cannot properly transmit and receive due to the significant influence of cross link interference (CLI) when operating in full duplex on the second time resource, the transmission and reception performance for the terminal can be guaranteed by setting the resources to perform transmission and reception on the first time resource.

[0202] The terminal / base station performs DL or UL operations across the entire frequency resources that constitute the entire system bandwidth in the first time resource where the HD operation is performed. Within the first time resource where the HD operation is performed, the network performs DL operations through the 1-1 time resource and UL operations through the 1-2 time resource. At this time, the 1-1 time resource and the 1-2 time resource do not overlap with each other.

[0203] The terminal / base station performs FD operation in the second time resource, and the network performs DL operation through all or part of the frequency resources (first frequency resources) among the frequency resources constituting the system band of the cell, and performs UL operation through all or part of the frequency resources (second frequency resources).

[0204] Figure 16 shows examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0205] Referring to (a) of FIG. 16, in the first time resource (indicated by A), the device operates in half-duplex. In the second time resource (indicated by B), the device may operate in, for example, SBFD. The resource indicated by DL in the first time resource corresponds to the aforementioned 1-1 time resource, and the resource indicated by UL corresponds to the aforementioned 1-2 time resource.

[0206] Referring to (b) of Fig. 16, the frequency resource operating as DL in the second time resource corresponds to the first frequency resource described above, and the frequency resource operating as UL corresponds to the second frequency resource described above.

[0207] Figure 17 illustrates another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0208] Referring to (a) of FIG. 17, in the first time resource (indicated by A), the device operates in half-duplex. In the second time resource (indicated by B), for example, it may operate in SSFD. The resource indicated by DL in the first time resource corresponds to the aforementioned 1-1 time resource, and the resource indicated by UL corresponds to the aforementioned 1-2 time resource.

[0209] Referring to (b) of Fig. 17, the frequency resources operating as DL and DL+UL in the second time resource correspond to the first frequency resource described above, and the frequency resources operating as DL+UL correspond to the second frequency resource described above.

[0210] The first frequency resource and / or the second frequency resource may have all or some of the following characteristics:

[0211] 1) When performing SBFD operation, the first frequency resource and the second frequency resource do not overlap with each other. This is to ensure that DL and UL operations are performed through different frequency resources. At this time, there may be frequency resources that do not correspond to either the first or second frequency resources, and such frequency resources are called guard subbands or guard frequency resources. Such guard frequency resources may be necessary to reduce interference between DL transmission and UL reception. The guard frequency resource may be located between the first and second frequency resources.

[0212] 2) When performing SSFD operation, the first frequency resource and the second frequency resource may overlap. In this case, there may be frequency resources that do not correspond to either the first frequency resource or the second frequency resource, and such frequency resources are called guard subbands or guard frequency resources. Such guard frequency resources may be necessary to reduce interference between DL transmissions on adjacent carriers and / or between DL transmissions and UL reception on adjacent carriers.

[0213] 3) When performing the SBFD operation, the second frequency resource may be configured with continuous frequency resources, and the first frequency resource may be configured with non-contiguous frequency resources. In this case, the first frequency resource may be configured with multiple (for example, two) non-contiguous sets, and each set may be configured with continuous frequency resources. This is to reduce interference of DL transmission on adjacent carriers to UL resources by positioning the second frequency resource used for UL at the center of the frequency resources constituting the cell. Conversely, the first frequency resource may be configured with continuous frequency resources, and the second frequency resource may be configured with non-contiguous frequency resources. In this case, the second frequency resource may be configured with multiple (for example, two) non-contiguous sets, and each set may be configured with continuous frequency resources. This is to reduce interference of DL transmission on UL resources on adjacent carriers by positioning the second frequency resource used for DL ​​at the center of the frequency resources constituting the cell.

[0214] 4) When performing SSFD operation, the second frequency resource may be configured with a portion of the frequency resources of the first frequency resource. In this case, the second frequency resource may be configured with X PRBs (physical resource blocks) less than the first frequency resource for one or both edge portions of the carrier. This is to reduce interference between DL transmission on adjacent carriers and UL reception.

[0215] Through the above operation, the base station can perform a half-duplex operation in which only one of DL transmission or UL reception is performed in the entire frequency resources constituting the cell in the first time resource, and a full-duplex operation in which DL transmission is performed through the first frequency resource within the frequency resources constituting the cell and UL reception is simultaneously performed through the second frequency resource within the frequency resources constituting the cell in the second time resource.

[0216] The network can determine / judge the 'first time resource' and the 'second time resource', and the 'first frequency resource' and the 'second frequency resource' as described above, and provide all or part of the corresponding information to the terminal. The network can perform DL transmission to the terminal in the '1-1 time resource within the first time' and the '1 frequency resource within the second time resource', and perform UL reception from the terminal in the '1-2 time resource within the first time resource' and the '2 frequency resource within the second time resource'.

[0217] The terminal can receive all or part of the information about the 'first time resource' and the 'second time resource' and the 'first frequency resource' and the 'second frequency resource' from the network, and determine the location of the resources. The terminal can perform DL reception from the network through all or part of the '1-1 time resource within the first time' and the '1 frequency resource within the second time resource', and perform UL transmission to the network through the '1-2 time resource within the first time resource' and the '2 frequency resource within the second time resource'.

[0218] Meanwhile, in existing NR TDD carriers, the base station performs only downlink or uplink operations in a specific time resource. In this case, the base station always operates in downlink in the time resource where SSB is transmitted.

[0219] For terminals operating in existing TDD, the following is assumed for symbols in which SSB (SS / PBCH) is transmitted.

[0220] 1) SS / PBCH transmission symbols cannot be configured for uplink by TDD configuration (e.g., 'TDD-UL-DL-ConfigCommon' and / or 'TDD-UL-DL-ConfigDedicated').

[0221] 2) SS / PBCH transmission symbols cannot be set to uplink in SFI (slot format indication) by DCI format 2_0.

[0222] 3) When SS / PBCH is transmitted in a symbol set to flexible by TDD configuration (e.g., 'TDD-UL-DL-ConfigCommon' and / or 'TDD-UL-DL-ConfigDedicated'), if the uplink transmission of the terminal overlaps with the SS / PBCH symbol, the uplink transmission is not performed. In case of SRS, if it overlaps with the SS / PBCH symbol in the flexible symbol, SRS transmission is not performed in the overlapped symbol(s).

[0223] Meanwhile, in FDs such as SBFD and SSFD, both DL and UL resources can exist in the same time resource from the cell's perspective. Therefore, the base station can simultaneously perform downlink transmission and uplink reception. Therefore, even if SS / PBCH are transmitted in the time resource where the cell is performing FD operation, the base station can perform uplink reception while transmitting SS / PBCH.

[0224] Meanwhile, under the current standard, a terminal cannot perform uplink transmission on symbol resources where SS / PBCH is transmitted. In other words, a terminal cannot perform FD operations on the SS / PBCH transmission time resources of a base station.

[0225] When a specific time resource is configured as a time resource operating in SBFD (SBFD symbol), both DL and UL resources can exist in that time resource. In this case, if there is no UL signal to be received by the base station in that time resource, the base station can only perform DL transmission. In SBFD resources, DL transmission occurs only within the DL subband. Therefore, even if there is no UL signal transmitted in the UL subband, DL transmission can only be performed within the DL subband.

[0226] In this case, even if a specific time resource is determined to be an SBFD symbol, if there is no UL transmission to be received by the base station, it may be considered to perform DL transmission not only on the DL subband but also outside the DL subband to improve DL throughput. In other words, it may be considered to perform DL transmission over the entire bandwidth.

[0227] That is, a fallback to TDD operation that performs DL or UL operation over the entire band, rather than SBFD operation over DL / UL subbands, can be considered for resources judged as SBFD symbols.

[0228] In this disclosure, we assume and describe SBFD operation, where a cell performs DL and UL simultaneously using different frequency resources (e.g., subbands) within the same time resource. However, the contents of this disclosure can also be applied to a cell performing SSFD operation.

[0229] In a wireless communication system, i) the base station may perform full duplex operation and the terminal may perform half duplex operation, ii) the base station may perform half duplex operation and the terminal may perform full duplex operation, or iii) both the base station and the terminal may support full duplex operation.

[0230] A terminal that knows that the base station can perform full duplex operation may be referred to as an FD-aware terminal hereinafter. A terminal that knows that the base station can perform SBFD operation may be referred to as an SBFD-aware terminal hereinafter. A terminal that knows that the base station can perform SSFD operation may be referred to as an SSFD-aware terminal hereinafter.

[0231] If a base station supports both half-duplex and full-duplex operation, it can inform the terminal of the resources (time or frequency, or both) on which it can (or expects to) perform half-duplex and full-duplex.

[0232] If the base station is a full-duplex base station capable of SSFD operation, UL reception may be possible simultaneously on some or all of the frequency resources available for DL ​​transmission at the base station. In other words, some frequency resources may support both DL transmission / reception and UL reception / transmission. In this case, information about frequency resources capable of SSFD can be communicated to the terminal. Furthermore, information about time resources capable of SSFD can be communicated to the terminal.

[0233] In the case of a full-duplex terminal, UL transmission may be possible simultaneously on some or all of the frequency resources available for DL ​​reception of the terminal. In the present disclosure, a terminal that performs half-duplex operation may be referred to as an HD terminal, and a terminal that can (or does) perform full-duplex operation may be referred to as an FD terminal.

[0234] When a base station performs full duplex operation such as SBFD or SSFD, it may perform SSFD and / or SBFD operation only for some time / frequency resources. When an SBFD-aware terminal and / or an SSFD-aware terminal knows the time / frequency resources on which a cell performs SSFD and / or SBFD operation, the terminal may perform the operation differently depending on whether the cell operates in half duplex (HD) or SBFD or SSFD. For example, the terminal may perform transmission and reception by differently determining the time / frequency resources on which it performs reception of a DL signal / channel and / or transmission of a UL signal / channel as HD resources, SBFD resources, or SSFD resources.

[0235] The base station may perform a half-duplex operation in which only one of DL transmission or UL reception is performed in the entire frequency resources constituting the cell in the time resources operating in HD, and may perform a full-duplex operation in which DL transmission is performed through the first frequency resource (i.e., DL subband resource) within the frequency resources constituting the cell and UL reception is simultaneously performed through the second frequency resource (i.e., UL subband resource) within the frequency resources constituting the cell in the time resources operating in SBFD and SSFD.

[0236] To this end, the base station determines / determines time resources corresponding to the first time resource (i.e., HD symbol) and the second time resource (i.e., FD symbol) and transmits configuration information regarding the first time resource (i.e., HD symbol) and / or the second time resource (i.e., FD symbol) to the terminal. The FD symbol may include both the SBFD symbol and the SSFD symbol. More specifically, the base station may determine / determine time resources corresponding to the HD symbol, the SBFD symbol, and / or the SSFD symbol, and transmit configuration information regarding the HD symbol, the SBFD symbol, and / or the SSFD symbol to the terminal.

[0237] At this time, the DL subband resources and / or UL subband resources may be configured differently in the time resources operating in SBFD and in the time resources operating in SSFD. In the time resources operating in SBFD, the DL subband resources and UL subband resources are configured so as not to overlap each other. On the other hand, in the time resources operating in SSFD, the DL subband resources and UL subband resources may be configured so as to overlap each other. The DL subband / UL subband resources may be configured with a portion of the frequency resources of the system bandwidth or with the entire frequency resources.

[0238] The terminal receives configuration information about an HD symbol, an SBFD symbol, and / or an SSFD symbol from the network, and determines the positions of the HD symbol, the SBFD symbol, and / or the SSFD symbol. At this time, the terminal performs DL reception (UL transmission) through the entire frequency resources for which the terminal is configured to operate DL reception (UL transmission) in the HD symbol. And, in the SBFD symbol and / or the SSFD symbol, the terminal performs DL reception (UL transmission) through DL subband (UL subband) resources that are the same as or limited (smaller) to the frequency resources for which the terminal performs DL reception (UL transmission) in the HD symbol. In this case, even if the terminal configures frequency resources that do not correspond to DL subband resources (UL subband resources) in the SBFD symbol and / or SSFD symbol resources for DL ​​reception (UL transmission), the terminal does not perform DL reception (UL transmission) in the frequency resources that do not correspond to DL subband resources (UL subband resources).

[0239] Now, we describe how a device determines a time resource (e.g., a slot) for transmitting UCI (e.g., HARQ-ACK, SR (scheduling request), CSI (channel state information), etc.) and transmits UCI in the determined time resource. For convenience, HARQ-ACK is first described as an example of UCI.

[0240] First, a method for determining a slot position in which a terminal feeds back HARQ-ACK information for PDSCH reception according to existing standard specifications is described.

[0241] DL Slot n D In the case of SPS PDSCH reception ending in , the terminal transmits HARQ-ACK information for the SPS PDSCH through the PUCCH of UL slot n+k. At this time, k is provided by the 'PDSCH-to-HARQ feedback timing indicator' field (if present) of the DCI format that activates the SPS PDSCH reception.

[0242] If the terminal is in DL slot n D When a DCI format for activating SPS PDSCH reception or scheduling PDSCH reception ending in is received, but the DCI format does not include a 'PDSCH-to-HARQ feedback timing indicator', the terminal transmits / provides HARQ-ACK information in a PUCCH transmission of UL slot n+k, where k is provided by a higher layer parameter 'dl-DataToUL-ACK', 'dl-DataToUL-ACK-r16', 'dl-DataToUL-ACK-DCI-1-2', 'dl-DataToUL-ACK-r17', 'dl-DataToUL-ACK-DCI-1-2-r17', or 'dl-DataToUL-ACK-v1700'.

[0243] If the terminal is in DL slot n D Receive a DCI format that schedules PDSCH receptions ending in DL slot n, or detect a DCI format that generates HARQ-ACK information bits. D If the UE does not schedule PDSCH reception through PDCCH reception ending in , the UE transmits / provides the corresponding HARQ-ACK information in the PUCCH transmission of UL slot n+k, where k is the number of slots, and is indicated by the 'PDSCH-to-HARQ_feedback timing indicator' field (if any) of the DCI format, or provided by the upper layer parameter 'dl-DataToUL-ACK', 'dl-DataToUL-ACK-r16', 'dl-DataToUL-ACK-DCI-1-2', 'dl-DataToUL-ACK-r17', 'dl-DataToUL-ACK-DCI-1-2-r17', or 'dl-DataToUL-ACK-v1700'.

[0244] The present disclosure describes a method for determining slot resources for a terminal to transmit UCI, taking into account time resources for a cell operating in FD and time resources for operating in HD, when operating in intra-carrier full duplex. In other words, the method according to the present disclosure can modify the method of existing standards by taking into account time resources for operating in FD and time resources for operating in HD.

[0245] For cells operating in FD, they can operate in half-duplex (HD) or full-duplex (FD) mode depending on time resources. For time / frequency resources operating in full-duplex (FD), the channel environment may be worse than that of resources operating in half-duplex (HD) due to cross-link interference (CLI), self-interference (SI), etc. Therefore, if UCI transmission via PUCCH or PUSCH is performed on FD resources based on the channel environment in HD resources, UCI transmission may not be performed properly.

[0246] Therefore, the present disclosure proposes a method for enabling a terminal to transmit UCI in a slot in which a cell operates in HD rather than a slot in which the cell operates in FD, if possible.

[0247] Considering that a terminal can perform FD operation and whether the terminal operates HD / FD may vary depending on time resources, in the present disclosure, 'resources for a cell to operate in HD' and 'resources for a cell to operate in FD' may be replaced with 'resources for a terminal to operate in HD' and 'resources for a terminal to operate in FD', respectively.

[0248] Below, we propose a method for determining UCI transmission slot resources so that the slot resources through which a terminal transmits UCI (uplink control information) become HD resources.

[0249] Method 1. Delayed UCI transmission

[0250] If the terminal determines that UCI (e.g., HARQ-ACK, SR (scheduling request), CSI (channel state information), etc.) is transmitted in slot m (FD slot) according to the existing standard (i.e., if UCI is set to be transmitted in slot m, which is an FD slot according to the existing standard), in the present disclosure, the terminal determines the HD slot (let's call this slot m') closest to slot m among the slots after slot m as a slot for transmitting UCI, and can transmit UCI in the corresponding slot.

[0251] If slot m is an HD slot, the terminal transmits UCI in slot m. If slot m is an FD slot, the terminal determines the fastest HD slot after slot m+1 as the slot for transmitting UCI. Since this example is about UCI transmission by the terminal, the HD slot can be interpreted as a UL slot.

[0252] Figure 18 illustrates a method for transmitting HARQ-ACK information of a terminal.

[0253] In Fig. 18, DL slot and UL slot mean HD slot.

[0254] For example, when a terminal receives a PDSCH whose reception is terminated in slot n, it may be configured to transmit HARQ-ACK information for the corresponding PDSCH in slot n+k. Here, k is the number of slots, and may be indicated by the 'PDSCH-to-HARQ_feedback_timing_indicator' field (if present) of the DCI format, or may be provided by 'dl-DataToUL-ACK', 'dl-DataToUL-ACK-r16', 'dl-DataToUL-ACK-DCI-1-2', 'dl-DataToUL-ACK-r17', 'dl-DataToUL-ACK-DCI-1-2-r17' or 'dl-DataToUL-ACK-v1700' included in a higher layer message (e.g., 'PUCCH-Config' used to configure terminal-specific PUCCH parameters).

[0255] At this time, if slot n+k is an FD slot, the terminal determines that the fastest HD slot (e.g., slot n+k', which is a UL slot) among the slots existing after slot n+k is a slot for transmitting UCI, and can transmit UCI in that slot.

[0256] In the present disclosure, HD slot and FD slot may more specifically mean the following.

[0257] An HD slot may refer to a slot in which all symbols within the slot operate in HD. In other words, if all symbols within the slot are allocated for HD operation, it may be called an HD slot.

[0258] An FD slot may mean i) a slot in which all symbols within the slot operate as FDs. That is, if all symbols within the slot are allocated for FD operations, the slot may be referred to as an HD slot. Or ii) a slot in which at least one symbol operates as an FD.

[0259] Alternatively, in the present disclosure, an HD slot may mean a slot in which, when a terminal receives a specific DL signal / channel in the slot, all symbols in which the DL signal / channel is received are symbols that operate in HD, and when a terminal transmits a specific UL signal / channel in the slot, all symbols in which the UL signal / channel is transmitted are symbols that operate in HD.

[0260] An FD slot may refer to a slot in which, when a terminal receives a specific DL signal / channel in the slot, all symbols in which the DL signal / channel is received are symbols that operate as FDs, and may refer to a slot in which, when a terminal transmits a specific UL signal / channel in the slot, all symbols in which the UL signal / channel is transmitted are symbols that operate as FDs.

[0261] Alternatively, an FD slot may mean a slot in which at least one symbol among the symbols in which the DL signal / channel is received is a symbol that operates as an FD when the terminal receives a specific DL signal / channel in the slot, and may mean a slot in which at least one symbol among the symbols in which the UL signal / channel is transmitted is a symbol that operates as an FD when the terminal transmits a specific UL signal / channel in the slot.

[0262] In the present disclosure, a symbol / slot operating in HD may refer to a symbol / slot for which a base station has semi-statically configured the cell to operate in HD. In the present disclosure, a symbol / slot operating in FD may refer to a symbol / slot for which a base station has semi-statically configured the cell to operate in FD. Thereafter, when a terminal is dynamically instructed by a base station that a specific symbol / slot resource operates in HD or FD, the terminal may determine a slot for transmitting UCI by considering only the semi-statically instructed information.

[0263] Hereinafter, downlink (DL) SPS (semi-persistent scheduling) may mean periodically receiving downlink data via PDSCH on DL SPS resources that are semi-statically configured without separate DCI scheduling. The UE may feed back HARQ-ACK information on PUCCH resources that are periodically allocated for the periodically received DL SPS. However, there may be cases where HARQ-ACK information for DL ​​SPS received in a specific slot cannot be fed back. For example, let's assume that DL SPS is configured to receive downlink data on PDSCH of slot n and feed back HARQ-ACK information (which may be referred to as SPS HARQ-ACK) for the downlink data via PUCCH of slot n+k (which may be referred to as SPS PUCCH).

[0264] In this case, if the slot transmitting the SPS HARQ-ACK is a downlink slot set to semi-static, the terminal may delay the timing of the SPS HARQ-ACK transmission until a slot in which uplink transmission can be performed after the downlink slot. This operation may be referred to as SPS HARQ-ACK delay (or SPS PUCCH delay).

[0265] At this time, in the method according to the present disclosure, if a slot determined / set to transmit SPS HARQ-ACK according to a conventional standard is a DL slot or an FD slot, the terminal can determine the HD slot that can transmit UL the fastest thereafter as a slot for transmitting UCI. That is, if the slot that is set to transmit SPS HARQ-ACK is a slot that is semi-statically determined to be a DL slot and / or an FD slot, the terminal can determine the slot that can transmit UL the fastest thereafter as an HD slot as a slot for transmitting HARQ-ACK. At this time, if all symbols in a slot in which a PUCCH including HARQ-ACK information is transmitted are symbols that are semi-statically determined to be UL or symbols that are semi-statically determined to be flexible in which no SS / PBCH block is transmitted, the slot can be determined as an HD slot that can transmit UL.

[0266] If the slot for transmitting SPS HARQ-ACK is delayed, the terminal can receive the maximum delay value to apply (maximum number of delayed slots) from the base station through a higher layer parameter.

[0267] At this time, the terminal can only consider HD slots for counting delayed slots. That is, the terminal can set the maximum delay value to D max When the terminal transmits SPS HARQ-ACK, the transmission slot is at most D max I think it can be delayed as much as a dog's HD slot.

[0268] Figure 19 is an example of a delayed UCI transmission method.

[0269] Referring to FIG. 19, the terminal receives downlink data through PDSCH (DL SPS PDSCH) of downlink slots 191 and 192 by DL SPS.

[0270] Let us assume that the HARQ-ACK information for the downlink data of the DL SPS PDSCH received in slot n is semi-statically configured to be transmitted through the PUCCH resource of slot n+2. In other words, let us assume that the HARQ-ACK information for the downlink data of the DL SPS PDSCH received in slot 191 is configured to be transmitted in slot 193, and the HARQ-ACK information for the downlink data of the DL SPS PDSCH received in slot 192 is configured to be transmitted in slot 194.

[0271] However, slot 193 may be a DL slot and slot 194 may be an FD slot. In this case, the terminal may feed back HARQ-ACK information for downlink data of DL SPS PDSCH received in slot 191 in slot 196, which is the fastest UL transmission-capable HD slot after DL slot 193.

[0272] Additionally, the terminal can feedback HARQ-ACK information for downlink data of DL SPS PDSCH received in slot 192 in slot 196, which is the fastest UL transmission-capable HD slot after FD slot 194.

[0273] That is, the SPS HARQ-ACK information is transmitted with a delay from the originally set time. At this time, the maximum value that can be delayed (this is called D max (which can be displayed) can be set from the network to the terminal. That is, indefinitely delaying SPS HARQ-ACK information is not allowed.

[0274] If the above maximum delay value is exceeded, the terminal may not transmit SPS HARQ-ACK information or may transmit SPS HARQ-ACK information in another slot (e.g., slot 194). More specific operations will be described later (the gap between slot m and slot m' is G max(See Alt a to Alt d for larger cases). Also, when counting the maximum value of the delay, only HD slots can be considered. In the above example, if the maximum value of the delay is given as 2, slot 194, which is an FD slot, is not counted.

[0275] As another example, in the case of an aperiodic CSI report, the terminal multiplexes and transmits the aperiodic CSI information on the PUSCH of the first slot in which the PUSCH scheduled by the DCI instructing / requesting the aperiodic CSI report is transmitted.

[0276] For PUSCH repetition type A, when DCI format 0_1 ​​and DCI format 0_2 indicate codepoint “10” or “11” for ‘SRS resource set indicator’ and schedule aperiodic CSI reports on PUSCH with transport blocks by the ‘CSI request’ field of DCI, CSI report multiplexing is determined as follows.

[0277] If the upper layer parameter 'AP-CSI-MultiplexingMode' in 'CSI-AssociatedReportConfigInfo' is enabled and UCI other than CSI reports are not multiplexed on the PUSCH, the CSI reports are transmitted individually only on the first transmission occasion associated with the first SRS resource set and the first transmission occasion associated with the second SRS resource set. Otherwise, the CSI reports are transmitted only on the first transmission occasion.

[0278] For PUSCH transmission of TBoMS, when DCI format 0_1 ​​and DCI format 0_2 schedule aperiodic CSI reports by the 'CSI request' field of DCI in PUSCH with transport blocks, the CSI report is transmitted only in the first slot of the N·K slots determined for the PUSCH transmission.

[0279] For PUSCH repetition type B, when DCI format 0_1 ​​and DCI format 0_2 indicate code point "10" or "11" for 'SRS resource set indicator' and schedule aperiodic CSI reports on PUSCH with transport blocks by 'CSI request' field of DCI, CSI report multiplexing is determined as follows.

[0280] If the upper layer parameter 'AP-CSI-MultiplexingMode' in 'CSI-AssociatedReportConfigInfo' is enabled and the number of symbols of the first actual repetition associated with the first SRS resource set and the first actual repetition associated with the second SRS resource set are the same and no UCI other than the CSI report is multiplexed on the PUSCH, the CSI report is multiplexed separately only for the first actual repetition associated with the first SRS resource set and the first actual repetition associated with the second SRS resource set. Otherwise, the CSI report is multiplexed only for the first actual repetition.

[0281] When a slot configured to transmit aperiodic CSI information is slot m, slot m may be an FD slot. In this case, the terminal can apply the above method to determine the fastest HD slot after slot m as the slot for transmitting UCI.

[0282] Additionally, in the case of an aperiodic CSI report without PUSCH transmission, the terminal can report aperiodic CSI information through slot resources indicated by the TDRA field of the DCI indicating an aperiodic CSI report.

[0283] When a terminal is scheduled to transmit a PUSCH having no transport block but a CSI report by the 'CSI request' field of the DCI, the value m of the 'Time domain resource assignment' field of the DCI provides a row index m + 1 of the resource allocation table. The indexed row may define a start and length indicator SLIV or directly define a start symbol S and an allocation length L. The PUSCH mapping type and K2 value to be applied to the PUSCH transmission may be determined as follows.

[0284] [Formula 1]

[0285]

[0286] Here, Y j , j= 0, ..., N Rep -1 are the corresponding list entries of the upper layer parameters. N RepIn 'CSI-ReportConfig' for the triggered CSI reporting settings, the upper layer parameter may be, i) if PUSCH is scheduled by DCI format 0_2 (a DCI format used for scheduling PUSCH in one cell) and 'reportSlotOffsetListDCI-0-2' or 'reportSlotOffsetListDCI-0-2-r17' is set, 'reportSlotOffsetListDCI-0-2' or 'reportSlotOffsetListDCI-0-2-r17'. ii) If PUSCH is scheduled by DCI format 0_1 ​​(a DCI format used for scheduling one or more PUSCHs in one cell) and 'reportSlotOffsetListDCI-0-1' or 'reportSlotOffsetListDCI-0-1-r17' is set, it may be 'reportSlotOffsetListDCI-0-1' or 'reportSlotOffsetListDCI-0-1-r17'. iii) In other cases, it may be 'reportSlotOffsetList' or 'reportSlotOffsetList-r17'.

[0287] Y j (m+1) is Y j is the (m+1)th entry.

[0288] Slot K in which the terminal transmits PUSCH s can be determined as follows based on K2.

[0289] [Formula 2]

[0290]

[0291] If the terminal has 'ca-SlotOffset' set for at least one of the scheduled cell and scheduling cell, K s can be determined as follows:

[0292] [Formula 3]

[0293]

[0294] Here, K offset is a parameter set by the upper layer, is K offset The subcarrier spacing configuration for , where the value 0 is for frequency range 1, n is the slot with scheduling DCI, K2 is based on the numerology of PUSCH, and μ PUSCH and μ PDCCH are, in turn, subcarrier spacing settings for PUSCH and subcarrier spacing settings for PDCCH. Scheduling DCI is a DCI format other than DCI format 0_0 that is CRC scrambled by TC-RNTI.

[0295] 'N CA slot,offset,PDCCH' and 'μoffset,PDCCH' are, in order, N CA slot, offset, and μ offset These can be determined by the 'ca-SlotOffset' set by the upper layer for the cell receiving the PDCCH. 'N CA slot,offset,PUSCH' and 'μoffset,PUSCH' are, in order, N CA slot, offset, and μ offset These can be determined by the 'ca-SlotOffset' set by the upper layer for the cell transmitting PUSCH.

[0296] For a PUSCH scheduled by DCI format 0_1, if 'pusch-RepTypeIndicatorDCI-0-1' is set to 'pusch-RepTypeB', the UE applies the PUSCH repetition type B procedure when determining time-domain resource allocation. For a PUSCH scheduled by DCI format 0_2, if 'pusch-RepTypeIndicatorDCI-0-2' is set to 'pusch-RepTypeB', the UE applies the PUSCH repetition type B procedure when determining time-domain resource allocation. Otherwise, the UE applies the PUSCH repetition type A procedure when determining time-domain resource allocation for a PUSCH scheduled by PDCCH, RAR UL grant, or fallback RAR UL grant.

[0297] For PUSCH scheduled by DCI format 0_1 ​​or DCI format 0_2, if 'numberOfSlotsTBoMS' exists and is greater than 1, the UE may apply the TboMS procedure when determining time domain resource allocation.

[0298] For PUSCH repetition type A and TBoMS, the number of consecutive symbols L counted from the start symbol S based on the start of the slot and the symbol S allocated for PUSCH can be determined from the start and length indicator SLIV of the indexed row.

[0299] For example, if (L-1)≤7, then SLIV=14·(L-1)+S. Otherwise, SLIV=14·(14-L-1)+(14-1-S), and 0. <L≤14-S이다.

[0300] For PUSCH repetition type B, the number of consecutive symbols L calculated from the start symbol S based on the start of the slot and the symbol S allocated for PUSCH can be provided by 'startSymbol' and 'length' of the indexed row of the resource allocation table, respectively.

[0301] For PUSCH repetition type A and TBoMS, the PUSCH mapping type is set to type A or type B by the indexed row.

[0302] For PUSCH repetition type B, the PUSCH mapping type is set to type B.

[0303] When a slot configured to transmit aperiodic CSI information according to the conventional standard is referred to as slot m, slot m may be an FD slot. In this case, the terminal may determine the fastest HD slot after slot m as the slot for transmitting UCI by applying the method according to the present disclosure.

[0304] Additionally, if the terminal is set to transmit UCI in slot m by the existing standard, but the slot is an FD slot, and the terminal determines slot m' (m < m') as an HD slot to transmit UCI, the gap between slot m and slot m' is G max It may be limited to no larger than .

[0305] That is, in the present disclosure, the value of m'-m is G max can be restricted to not be larger than G. If the gap between slot m and slot m' is G max If it is greater than that, the terminal can determine the following slot as a slot for transmitting UCI.

[0306] Alt a. Terminal is slot m+G max is considered a slot for transmitting UCI.

[0307] Alt b. Terminal is slot m+G max Among the previously located slots, slot m+G that can be used by the terminal for PUCCH or PUSCH transmission max The slot closest to the UCI is determined to be the slot transmitting the UCI.

[0308] Alt c. The terminal determines slot m as the slot for transmitting UCI.

[0309] Alt d. The terminal does not perform the corresponding UCI transmission.

[0310] At this time, G max The value of can be fixed to a specific value and defined in the standard specification. Or G max The value may be a value that the terminal receives from the network through RRC, MAC-CE, and / or DCI signaling.

[0311] For an aperiodic CSI report with PUSCH transmission indicated via a UL grant, slot m' may be the same as the last slot in which the scheduled PUSCH is transmitted.

[0312] That is, when the number of slots in which PUSCH (which may also include TBoMS) is transmitted is N*K, G max The value of can be equal to N*K-1. Here, K represents the number of repetitions of PUSCH, and the value of N can represent the number of slots constituting one TBoMS transmission (N=1 for general PUSCH transmission, not TBoMS).

[0313] Method 2. A method of determining UCI transmission slots by counting only HD slots.

[0314] Method 2 is a method of counting only HD slots when counting several slots when transmitting UCI several slots after a specific slot.

[0315] As a specific example, when a terminal receives a PDSCH whose reception is terminated in slot n, the terminal may be configured to transmit HARQ-ACK information for the PDSCH in slot n+k. Here, k is the number of slots, and may be indicated by the 'PDSCH-to-HARQ_feedback_timing_indicator' field (if present) of the DCI format, or may be provided by 'dl-DataToUL-ACK', 'dl-DataToUL-ACK-r16', 'dl-DataToUL-ACK-DCI-1-2', 'dl-DataToUL-ACK-r17', 'dl-DataToUL-ACK-DCI-1-2-r17' or 'dl-DataToUL-ACK-v1700' included in a higher layer message (e.g., 'PUCCH-Config' used to set terminal-specific PUCCH parameters).

[0316] According to the present disclosure, when a terminal receives a PDSCH whose reception ends in slot n, the terminal determines the kth HD slot from slot n as a slot for transmitting UCI, and transmits UCI in that slot. That is, when the position of the kth HD slot from slot n is slot n+k' (k <= k'), the terminal determines slot n+k' as a slot for transmitting UCI, and transmits UCI.

[0317] Hereinafter, HD slot and FD slot may more specifically mean the following.

[0318] An HD slot may refer to a slot where all symbols within the slot operate in HD.

[0319] An FD slot may mean a slot in which all symbols within the slot operate as FDs, or may mean a slot in which at least one symbol within the slot operates as an FD.

[0320] Alternatively, an HD slot may mean a slot in which all symbols transmitted by a DL signal / channel are symbols operating in HD when a terminal receives a specific DL signal / channel in the slot, and may mean a slot in which all symbols transmitted by a UL signal / channel are symbols operating in HD when a terminal receives a specific UL signal / channel in the slot.

[0321] An FD slot may refer to a slot in which, when a terminal receives a specific DL signal / channel in the slot, all symbols through which the DL signal / channel is transmitted are symbols that operate as FDs, and may refer to a slot in which, when a terminal receives a specific UL signal / channel in the slot, all symbols through which the UL signal / channel is transmitted are symbols that operate as FDs.

[0322] Or, when a terminal receives a specific DL signal / channel in a slot, it may mean a slot in which at least one symbol among the symbols through which the DL signal / channel is transmitted is a symbol operating as an FD, and when a terminal receives a specific UL signal / channel in a slot, it may mean a slot in which at least one symbol among the symbols through which the UL signal / channel is transmitted is a symbol operating as an FD.

[0323] Alternatively, a symbol / slot operating in HD may refer to a symbol / slot for which the terminal has been semi-statically configured by the base station to operate in HD. In the present disclosure, a symbol / slot operating in FD may refer to a symbol / slot for which the terminal has been semi-statically configured by the base station to operate in FD. Thereafter, when the terminal is dynamically instructed by the base station that a specific symbol / slot resource operates in HD or FD, the terminal may determine a slot for transmitting UCI by considering only the semi-statically instructed information.

[0324] Additionally, according to the existing standard, the terminal had to transmit UCI in slot m, but according to the method of the present disclosure, if the terminal determines slot m' (m < m'), which is an HD slot, as a slot to transmit UCI because the slot is an FD slot, the gap between slot m and slot m' is G max It may be limited to no larger than .

[0325] That is, in the present disclosure, the value of m'-m is G max It is suggested that the gap between slot m and slot m' should not be greater than G max In larger cases, the terminal may determine the following slots as slots for transmitting UCI.

[0326] Alt a. Terminal is slot m+G max is considered a slot for transmitting UCI.

[0327] Alt b. Terminal is slot m+G max Among the previously located slots, slot m+G that can be used by the terminal for PUCCH or PUSCH transmission max The slot closest to the UCI is determined to be the slot transmitting the UCI.

[0328] Alt c. The terminal determines slot m as the slot for transmitting UCI.

[0329] Alt d. The terminal does not perform the corresponding UCI transmission.

[0330] Alternatively, if the terminal receives a PDSCH whose reception ends in slot n and determines to transmit HARQ-ACK information for the PDSCH in slot n+k', the gap between slot n and slot n+k' (i.e., the k' value) is G max may be restricted to be no greater than G. That is, in the present disclosure, the value of k' is G max It is suggested that the gap in the values ​​of k' should not be greater than G max In larger cases, the terminal may determine the following slots as slots for transmitting UCI.

[0331] Alt a. Terminal is slot n+G max is considered a slot for transmitting UCI.

[0332] Alt b. Terminal is slot n+G max Among the previously located slots, slot n+G that can be used by the terminal for PUCCH or PUSCH transmission max The slot closest to the UCI is determined to be the slot transmitting the UCI.

[0333] Alt c. The terminal determines slot n+k as the slot for transmitting UCI.

[0334] Alt d. The terminal does not perform the corresponding UCI transmission.

[0335] G max The value of can be fixed to a specific value and defined in the standard specification. Or G max The value may be a value that the terminal receives from the network through RRC, MAC-CE, and / or DCI signaling.

[0336] This method may be applied only to the transmission of HARQ-ACK information.

[0337] The above proposed methods, including the above-described methods 1 and 2, can be applied when all or some of the following conditions are satisfied.

[0338] i) The terminal may apply the above suggestion only when the application of the above operation is indicated by the network through RRC, MAC-CE, DCI signaling, etc.

[0339] ii) The terminal can apply the above proposed method differently depending on the UCI information transmitted.

[0340] For example, in the case of HARQ-ACK and / or SR information, transmission can be done in the same way as the existing method, and in the case of other information, transmission can be done by applying the above proposal. This is because low latency can be relatively important in the case of HARQ-ACK information.

[0341] Or, for example, G applied to the above method depending on the type of UCI transmitted. max The values ​​may be set / applied differently, as the required delay may vary depending on the UCI information.

[0342] Or, for example, for HARQ-ACK information, the above method 2 may be applied and for the remaining information, the above method 1 may be applied and transmitted.

[0343] iii) The method according to the present disclosure may be applied only when the terminal transmits UCI by multiplexing it over PUSCH. In other words, the method according to the present disclosure may be applied only when the terminal transmits UCI by applying the existing standard specification, but multiplexes the UCI onto PUSCH.

[0344] The base station requests UCI information such as HARQ-ACK, CSI, and SR from the terminal and receives this UCI information via PUCCH or PUSCH. The base station can determine the slot resources in which UCI is received by applying the above method to receive UCI in the HD slot as much as possible.

[0345] To this end, the base station determines / determines which resources the cell operates as FD and which resources it operates as HD, and signals information about the location and / or quantity of the corresponding resources to the terminal.

[0346] The base station then requests the terminal to transmit UCI.

[0347] Afterwards, the base station determines the slot resource for receiving UCI based on the slot location where the cell operates as FD and the slot location where the cell operates as HD.

[0348] From these resources, the base station receives UCI and obtains information such as HARQ-ACK, CSI, and SR.

[0349] Figure 20 illustrates the operation of a terminal according to the present disclosure.

[0350] Referring to Figure 20, the terminal receives downlink data from the network in the first slot (S201). For example, the terminal may receive downlink data (transmission block) via the PDSCH of the first slot.

[0351] The terminal determines a second slot for transmitting HARQ-ACK (hybrid automatic repeat request-acknowledgement) information for the downlink data to the network (S202).

[0352] For example, slot n, which is a downlink slot D In the case of SPS PDSCH reception ending in , the terminal may determine that it will transmit (or is set to transmit) HARQ-ACK information for the SPS PDSCH through the PUCCH of slot n+k, which is an uplink slot. In this case, k is provided by the 'PDSCH-to-HARQ_feedback timing indicator' field (if present) of the DCI format that activates the SPS PDSCH reception.

[0353] If the terminal is in the downlink slot n DWhen a DCI format for activating SPS PDSCH reception or scheduling PDSCH reception ending in is received, but the DCI format does not include a 'PDSCH-to-HARQ feedback timing indicator (PDSCH-to-HARQ_feedback timing indicator)', the terminal may determine that HARQ-ACK information will be transmitted (or is configured to be transmitted) in PUCCH transmission of uplink slot n+k. In this case, k is provided by a higher layer parameter 'dl-DataToUL-ACK', 'dl-DataToUL-ACK-r16', 'dl-DataToUL-ACK-DCI-1-2', 'dl-DataToUL-ACK-r17', 'dl-DataToUL-ACK-DCI-1-2-r17', or 'dl-DataToUL-ACK-v1700'.

[0354] If the terminal is in the downlink slot n D Receive a DCI format that schedules PDSCH receptions ending in or detects a DCI format that generates HARQ-ACK information bits in downlink slot n. D If PDSCH reception is not scheduled through PDCCH reception ending in , the UE determines that the corresponding HARQ-ACK information will be transmitted (or configured to be transmitted) in the PUCCH transmission of slot n+k, which is an uplink slot. Here, k is the number of slots, and is indicated by the 'PDSCH-to-HARQ_feedback timing indicator' field (if present) of the DCI format, or provided by the upper layer parameter 'dl-DataToUL-ACK', 'dl-DataToUL-ACK-r16', 'dl-DataToUL-ACK-DCI-1-2', 'dl-DataToUL-ACK-r17', 'dl-DataToUL-ACK-DCI-1-2-r17', or 'dl-DataToUL-ACK-v1700'.

[0355] For example, at least one value may be provided by a higher layer parameter (e.g., 'dl-DataToUL-ACK', 'dl-DataToUL-ACK-r16', 'dl-DataToUL-ACK-DCI-1-2', 'dl-DataToUL-ACK-r17', 'dl-DataToUL-ACK-DCI-1-2-r17' or 'dl-DataToUL-ACK-v1700'), and one of the at least one value may be indicated according to the value of the 'PDSCH-to-HARQ feedback timing indicator' field of the DCI format. For example, if the 'PDSCH-to-HARQ feedback timing indicator' field is 1 bit, if the value of the 1 bit is 0, it may indicate the first value among the values ​​provided by the upper layer parameter, and if the value of the 1 bit is 1, it may indicate the second value among the values ​​provided by the upper layer parameter. As another example, if the 'PDSCH-to-HARQ feedback timing indicator' field is 2 bits, if the values ​​of the 2 bits are '00', '01', '10', and '11', it may sequentially indicate the first, second, third, and fourth values ​​among the values ​​provided by the layer parameter. As another example, if the 'PDSCH-to-HARQ feedback timing indicator' field is 3 bits, if the values ​​of the 3 bits are '000', '001', '010', '011', '100', '101', '110', '111', then the first, second, third, fourth, fifth, sixth, seventh, and eighth values ​​among the values ​​provided by the layer parameters can be indicated in that order.

[0356] If the second slot is an FD slot composed of FD (full duplex) resources, the terminal transmits the HARQ-ACK information in the third slot, which is an HD slot composed of HD (half duplex) resources located next to the FD slot (S203).

[0357] The HD slot can be any one of a downlink (DL) slot, a flexible slot, or an uplink (UL) slot, and the third slot can be an uplink (UL) slot.

[0358] Here, a DL slot may be a slot in which all symbols within the slot are composed of DL symbols, but when a terminal wishes to perform a specific operation (e.g., reception of a DL signal or transmission of a UL signal) in the slot, it may mean a slot in which all symbols for performing the specific operation are composed of DL symbols.

[0359] A UL slot may be a slot in which all symbols within the slot are composed of UL symbols, but when a terminal wishes to perform a specific operation (e.g., transmission of a UL signal or reception of a DL signal) in the slot, it may mean a slot in which all symbols for performing the specific operation are composed of UL symbols.

[0360] A flexible slot may be a slot in which all symbols within the slot are composed of flexible symbols, but when a terminal wishes to perform a specific operation (e.g., transmission of a UL signal or reception of a DL signal) in the slot, it may mean a slot in which all symbols (or at least one symbol) to perform the specific operation are composed of flexible symbols.

[0361] If the second slot is an HD slot, and if the HD slot is a downlink (DL) slot, the HARQ-ACK information may be transmitted in the third slot, and if the HD slot is an uplink slot, the HARQ-ACK information may be transmitted in the second slot.

[0362] For convenience, when the first slot is referred to as slot n and the second slot is referred to as slot n+k, the value of k can be indicated by a specific field (e.g., the 'PDSCH-to-HARQ_feedback timing indicator' field described above) of downlink control information (DCI) that schedules a physical downlink shared channel (PDSCH) whose reception ends in slot n.

[0363] Alternatively, when the first slot is referred to as slot n and the second slot is referred to as slot n+k, the value of k may be provided by a higher layer parameter (e.g., 'dl-DataToUL-ACK', 'dl-DataToUL-ACK-r16', 'dl-DataToUL-ACK-DCI-1-2', 'dl-DataToUL-ACK-r17', 'dl-DataToUL-ACK-DCI-1-2-r17', or 'dl-DataToUL-ACK-v1700'). This may be applied when the DCI scheduling the PDSCH whose reception is terminated in the slot n does not have the specific field.

[0364] Alternatively, when the first slot is referred to as slot n and the second slot is referred to as slot n+k, the value of k may be a value indicated by a specific field of the DCI (a 'PDSCH-to-HARQ_feedback timing indicator' field) among a plurality of values ​​provided by a higher layer parameter (e.g., 'dl-DataToUL-ACK', 'dl-DataToUL-ACK-r16', 'dl-DataToUL-ACK-DCI-1-2', 'dl-DataToUL-ACK-r17', 'dl-DataToUL-ACK-DCI-1-2-r17', or 'dl-DataToUL-ACK-v1700').

[0365] In some embodiments, the terminal may further receive information indicating a maximum value of a gap between the second slot and the third slot.

[0366] At this time, the maximum value of the gap may be related to the number of HD slots after the second slot. For example, only the HD slots located after the second slot may be counted without counting the FD slots located after the second slot, and it may be determined whether the maximum value is exceeded.

[0367] In some embodiments, the terminal may further receive information indicating a maximum value of a gap between the first slot and the third slot.

[0368] According to an embodiment, the terminal determines a fourth slot to transmit uplink control information (UCI). If the fourth slot is an FD slot configured with FD (full duplex) resources, the terminal can transmit the UCI in a fifth slot, which is an HD slot configured with HD (half duplex) resources located next to the FD slot.

[0369] Depending on the type of the UCI, the maximum value of the gap between the fourth slot and the fifth slot may be applied differently.

[0370] The method of Fig. 20 can be said to be an example of applying the above-described method 1 and / or method 2.

[0371] According to the method of FIG. 20, in a wireless communication system including a terminal supporting both FD and HD operations, UCI can be prevented from being transmitted via FD resources whose channel conditions may be worse than the channel conditions targeted by the base station. Therefore, UCI can be reliably transmitted even in a wireless communication system supporting FD operations.

[0372] In addition, by clearly specifying which resource is used to transmit UCI when different types of resources (FD resources and HD resources) are mixed, ambiguity between the transmitting and receiving entities can be prevented.

[0373] Figure 21 illustrates a signaling process and operation method between a base station and a terminal.

[0374] Referring to Figure 21, the base station transmits a higher layer message to the terminal for setting up HD resources / FD resources (S211). The higher layer messages for setting up HD resources / FD resources may be included together in a single information element, or the higher layer messages for setting up HD resources and the higher layer messages for setting up FD resources may be included separately in separate information elements.

[0375] Depending on the embodiment, HD resources may be configured cell-specifically, and FD resources may be configured terminal-specifically. Alternatively, both HD resources and FD resources may be configured cell-specifically. HD resources and FD resources may be configured semi-persistently (semi-statically). Alternatively, HD resources may be configured semi-statically, and FD resources may be configured dynamically.

[0376] The base station provides the terminal with information on HARQ-ACK transmission timing (S212). For example, the base station may provide information indicating a slot for transmitting HARQ-ACK information through a specific field of DCI that schedules PDSCH (e.g., the aforementioned 'PDSCH-to-HARQ_feedback_timing_indicator' field). And / or, the base station may provide information related to the timing between PDSCH reception and HARQ-ACK information transmission through a higher layer message (e.g., 'dl-DataToUL-ACK', 'dl-DataToUL-ACK-r16', 'dl-DataToUL-ACK-DCI-1-2', 'dl-DataToUL-ACK-r17', 'dl-DataToUL-ACK-DCI-1-2-r17', or 'dl-DataToUL-ACK-v1700').

[0377] The base station transmits downlink data to the terminal (S213). The base station can transmit downlink data via the PDSCH (or SPS PDSCH).

[0378] The terminal determines a slot to transmit HARQ-ACK information by considering the FD slot (S214). First, the terminal can determine slot n+k to transmit HARQ-ACK information for PDSCH reception ending in slot n according to the existing standard specification. Then, the terminal determines a slot to actually transmit HARQ-ACK information by additionally considering whether the slot n+k is an FD slot. For example, if the slot n+k is an FD slot configured with FD resources, slot n+k' (wherein, k) which is an HD slot (more specifically, a UL slot) configured with HD resources located next to the FD slot <k')에서 상기 HARQ-ACK 정보를 전송하는 것이다.

[0379] In Fig. 20 and Fig. 21, the reception of downlink data through PDSCH and the transmission of HARQ-ACK information for the downlink data were described, but this can also be extended to UCI transmission. For example, let's assume that UCI is aperiodic CSI (aperiodic channel state information). A specific field of DCI indicating a report of such aperiodic CSI (aperiodic CSI report) can indicate a resource to perform the aperiodic CSI report. At this time, if the resource to perform the aperiodic CSI report is determined to be an FD slot, the terminal performs the aperiodic CSI report in the fastest HD slot (more specifically, an UL slot) after the FD slot.

[0380] In addition, when the terminal is required to transmit UCI in slot m according to the existing standard specification, when the terminal transmits UCI in slot m' (m < m'), which is an HD slot, because the slot m is an FD slot, according to the method of the present disclosure, the gap between slot m and slot m' is the maximum value (G max) may be limited to not be greater than the maximum value. The above maximum value may be set from the network to the terminal or may be predetermined according to the type of UCI in the standard specification.

[0381] Figure 22 illustrates a wireless device applicable to the present specification.

[0382] Referring to FIG. 22, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR).

[0383] A first wireless device (100) includes at least one processor (102) and at least one memory (104), and may further include at least one transceiver (106) and / or at least one antenna (108). The at least one processor (102, hereinafter simply referred to as a processor) controls at least one memory (104, hereinafter simply referred to as a memory) and / or at least one transceiver (106, hereinafter simply referred to as a transceiver or a transceiver), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (102) may process information in the memory (104) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (106). In addition, the processor (102) may receive a wireless signal including second information / signal through the transceiver (106), and then store information obtained from signal processing of the second information / signal in the memory (104). The memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive a wireless signal through one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit.In this specification, wireless device may also mean a communication modem / circuit / chip.

[0384] The processor (102) receives downlink data from the network in a first slot and determines a second slot for transmitting HARQ-ACK (hybrid automatic repeat request-acknowledgement) information for the downlink data to the network. If the second slot is an FD (full duplex) slot configured with FD (full duplex) resources, the terminal transmits the HARQ-ACK information in a third slot, which is an HD slot configured with HD (half duplex) resources located next to the FD slot. The specific operation thereof has been described with reference to FIGS. 18 to 21.

[0385] A second wireless device (200) includes at least one processor (202), at least one memory (204), and may further include at least one transceiver (206) and / or at least one antenna (208). The processor (202) controls the memory (204) and / or the transceiver (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information / signal, and then transmit a wireless signal including the third information / signal via the transceiver (206). In addition, the processor (202) may receive a wireless signal including fourth information / signal via the transceiver (206), and then store information obtained from signal processing of the fourth information / signal in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In this specification, a wireless device may also mean a communication modem / circuit / chip.

[0386] The processor (202) transmits downlink data to a terminal in a first slot and determines a second slot for receiving HARQ-ACK (hybrid automatic repeat request-acknowledgement) information for the downlink data from the terminal. If the second slot is an FD (full duplex) slot configured with FD (full duplex) resources, the base station receives the HARQ-ACK information in a third slot, which is an HD slot configured with HD (half duplex) resources located next to the FD slot. The specific operation thereof has been described with reference to FIGS. 18 to 21.

[0387] Hereinafter, the hardware elements of the wireless device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed herein, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed herein.

[0388] The one or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. The one or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in the one or more processors (102, 202). The one or more processors (102, 202) may also be implemented by at least one computer-readable medium (CRM) containing instructions based on being executed by at least one processor.

[0389] That is, at least one computer-readable medium (CRM) including instructions based on being executed by at least one processor receives downlink data from a network in a first slot and determines a second slot for transmitting HARQ-ACK information for the downlink data to the network. If the second slot is an FD slot configured with FD resources, the terminal transmits the HARQ-ACK information in a third slot, which is an HD slot configured with HD resources located next to the FD slot. The specific operation thereof has been described with reference to FIGS. 18 to 21.

[0390] The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions. The firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be included in one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202). The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0391] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0392] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of this document, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of this document, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed herein, via one or more antennas (108, 208). In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0393] Fig. 23 illustrates an example of a signal processing module structure. Here, signal processing may be performed in the processor (102, 202) of Fig. 22.

[0394] Referring to FIG. 23, a transmission device (e.g., a processor, a processor and a memory, or a processor and a transceiver) within a terminal or a base station may include a scrambler (301), a modulator (302), a layer mapper (303), an antenna port mapper (304), a resource block mapper (305), and a signal generator (306).

[0395] A transmitting device can transmit one or more codewords. The coded bits within each codeword are scrambled by a scrambler (301) and transmitted over a physical channel. A codeword may also be referred to as a data string and may be equivalent to a transport block, which is a data block provided by the MAC layer.

[0396] The scrambled bits are modulated into complex-valued modulation symbols by a modulator (302). The modulator (302) can modulate the scrambled bits according to a modulation scheme and arrange them into complex-valued modulation symbols that represent positions on a signal constellation. There is no limitation on the modulation scheme, and m-PSK (m-Phase Shift Keying) or m-QAM (m-Quadrature Amplitude Modulation) can be used to modulate the encoded data. The modulator may be referred to as a modulation mapper.

[0397] The complex modulation symbols may be mapped to one or more transmission layers by a layer mapper (303). The complex modulation symbols on each layer may be mapped by an antenna port mapper (304) for transmission on an antenna port.

[0398] The resource block mapper (305) can map the complex modulation symbol for each antenna port to an appropriate resource element within a virtual resource block (VRB) allocated for transmission. The resource block mapper can map the VRB to a physical resource block (PRB) according to an appropriate mapping scheme. The resource block mapper (305) can assign the complex modulation symbol for each antenna port to an appropriate subcarrier and multiplex it according to the user.

[0399] The signal generator (306) can generate a complex-valued time domain OFDM symbol signal by modulating a complex modulation symbol for each antenna port, i.e., an antenna-specific symbol, with a specific modulation method, for example, an Orthogonal Frequency Division Multiplexing (OFDM) method. The signal generator can perform an Inverse Fast Fourier Transform (IFFT) on the antenna-specific symbol, and a Cyclic Prefix (CP) can be inserted into the time domain symbol on which the IFFT is performed. The OFDM symbol is transmitted to a receiving device through each transmitting antenna through digital-to-analog conversion, frequency uplink conversion, etc. The signal generator can include an IFFT module, a CP inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0400] Fig. 24 illustrates another example of the signal processing module structure within a transmission device. Here, signal processing may be performed in a processor of a terminal / base station, such as the processor (102, 202) of Fig. 22.

[0401] Referring to FIG. 24, a transmission device (e.g., a processor, a processor and a memory, or a processor and a transceiver) within a terminal or base station may include a scrambler (401), a modulator (402), a layer mapper (403), a precoder (404), a resource block mapper (405), and a signal generator (406).

[0402] The transmitting device can transmit coded bits within a codeword through a physical channel after scrambling the coded bits within the codeword by a scrambler (401).

[0403] The scrambled bits are modulated into complex modulation symbols by a modulator (402). The modulator can modulate the scrambled bits according to a predetermined modulation scheme and arrange them into complex modulation symbols representing positions on a signal constellation. There is no limitation on the modulation scheme, and pi / 2-BPSK (pi / 2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), or m-QAM (m-Quadrature Amplitude Modulation) can be used to modulate the encoded data.

[0404] The above complex modulation symbol can be mapped to one or more transmission layers by the layer mapper (403).

[0405] The complex modulation symbols on each layer can be precoded by the precoder (404) for transmission on the antenna ports. Here, the precoder may perform precoding after performing transform precoding on the complex modulation symbols. Alternatively, the precoder may perform precoding without performing transform precoding. The precoder (404) may process the complex modulation symbols in a MIMO manner according to multiple transmission antennas to output antenna-specific symbols and distribute the antenna-specific symbols to the corresponding resource block mapper (405). The output z of the precoder (404) can be obtained by multiplying the output y of the layer mapper (403) by the precoding matrix W of NХM. Here, N is the number of antenna ports and M is the number of layers.

[0406] The resource block mapper (405) maps the demodulation modulation symbol for each antenna port to the appropriate resource element within the virtual resource block allocated for transmission.

[0407] The resource block mapper (405) can assign complex modulation symbols to appropriate subcarriers and multiplex them according to the user.

[0408] The signal generator (406) can generate a complex-valued time domain OFDM (Orthogonal Frequency Division Multiplexing) symbol signal by modulating a complex modulation symbol with a specific modulation method, for example, OFDM. The signal generator (406) can perform an Inverse Fast Fourier Transform (IFFT) on an antenna-specific symbol, and a Cyclic Prefix (CP) can be inserted into the time domain symbol on which the IFFT has been performed. The OFDM symbol is transmitted to a receiving device through each transmitting antenna after going through digital-to-analog conversion, frequency upconversion, etc. The signal generator (406) can include an IFFT module, a CP inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0409] The signal processing process of the receiving device may be configured in reverse order of the signal processing process of the transmitter. Specifically, the processor of the receiving device performs decoding and demodulation on a wireless signal received externally through the antenna port(s) of the transceiver. The receiving device may include a plurality of multiple receiving antennas, and each signal received through the receiving antenna is restored to a baseband signal and then multiplexed and MIMO demodulated to be restored to a data sequence originally intended to be transmitted by the transmitting device. The receiving device (1820) may include a signal restorer for restoring the received signal to a baseband signal, a multiplexer for combining and multiplexing the received and processed signals, and a channel demodulator for demodulating the multiplexed signal sequence into a corresponding codeword. The signal restorer, the multiplexer, and the channel demodulator may be configured as an integrated module performing their functions or as individual modules. More specifically, the signal restorer may include an analog-to-digital converter (ADC) that converts an analog signal into a digital signal, a CP remover that removes a CP from the digital signal, an FFT module that applies an FFT (fast Fourier transform) to a signal from which the CP has been removed to output a frequency domain symbol, and a resource element demapper / equalizer that restores the frequency domain symbol to an antenna-specific symbol. The antenna-specific symbol is restored to a transmission layer by a multiplexer, and the transmission layer is restored to a codeword that the transmitter intended to transmit by a channel demodulator.

[0410] FIG. 25 illustrates an example of a wireless communication device according to an implementation example of the present disclosure.

[0411] Referring to FIG. 25, a wireless communication device, for example, a terminal, may include at least one of a processor (2310) such as a digital signal processor (DSP) or a microprocessor, a transceiver (2335), a power management module (2305), an antenna (2340), a battery (2355), a display (2315), a keypad (2320), a global positioning system (GPS) chip (2360), a sensor (2365), a memory (2330), a subscriber identification module (SIM) card (2325), a speaker (2345), and a microphone (2350). There may be a plurality of antennas and processors.

[0412] The processor (2310) can implement the functions, procedures, and methods described in this specification. The processor (2310) of FIG. 25 may be the processor (102, 202) of FIG. 22.

[0413] Memory (2330) is connected to the processor (2310) and stores information related to the processor's operation. The memory may be located internally or externally to the processor and may be connected to the processor via various technologies, such as wired or wireless connections. The memory (2330) of FIG. 25 may be the memory (104, 204) of FIG. 22.

[0414] A user may input various types of information, such as a phone number, using various techniques, such as pressing buttons on a keypad (2320) or activating sound using a microphone (2350). The processor (2310) may receive and process the user's information and perform an appropriate function, such as dialing the entered phone number. In some scenarios, data may be retrieved from a SIM card (2325) or memory (2330) to perform the appropriate function. In some scenarios, the processor (2310) may display various types of information and data on a display (2315) for the user's convenience.

[0415] A transceiver (2335) is coupled to a processor (2310) and transmits and / or receives wireless signals, such as radio frequency (RF) signals. The processor may control the transceiver to initiate communication or transmit wireless signals containing various types of information or data, such as voice communication data. The transceiver includes a transmitter and a receiver for transmitting and receiving wireless signals. An antenna (2340) may facilitate the transmission and reception of wireless signals. In some implementations, upon receiving a wireless signal, the transceiver may forward and convert the signal to a baseband frequency for processing by the processor. The processed signal may be processed by various techniques, such as being converted into audible or readable information for output through a speaker (2345). The transceiver of FIG. 25 may be the transceiver (106, 206) of FIG. 29.

[0416] Although not shown in FIG. 25, various components, such as a camera and a Universal Serial Bus (USB) port, may be additionally included in the terminal. For example, the camera may be connected to the processor (2310).

[0417] Fig. 25 is only one implementation example for a terminal, and the implementation examples are not limited thereto. The terminal does not necessarily have to include all the elements of Fig. 25. That is, some components, such as a keypad (2320), a Global Positioning System (GPS) chip (2360), a sensor (2365), and a SIM card (2325), may not be essential elements, and in this case, may not be included in the terminal.

[0418] Figure 26 illustrates another example of a wireless device.

[0419] According to FIG. 26, the wireless device may include at least one processor (102, 202), at least one memory (104, 204), at least one transceiver (106, 206), and one or more antennas (108, 208).

[0420] The difference between the example of the wireless device described in FIG. 22 and the example of the wireless device in FIG. 26 is that in FIG. 22, the processor (102, 202) and the memory (104, 204) are separated, but in the example of FIG. 26, the memory (104, 204) is included in the processor (102, 202). That is, the processor and the memory may constitute a single chipset.

[0421] Fig. 27 illustrates a communication system (1) applicable to this specification.

[0422] Referring to FIG. 27, a communication system (1) applied to the present specification includes a wireless device, a base station, and a network. Here, the wireless device refers to a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Things) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone). XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices, and can be implemented in the form of HMD (Head-Mounted Device), HUD (Head-Up Display) installed in a vehicle, television, smartphone, computer, wearable device, home appliance, digital signage, vehicle, robot, etc. Mobile devices can include smartphone, smart pad, wearable device (e.g., smart watch, smart glass), computer (e.g., laptop, etc.), etc. Home appliances can include TV, refrigerator, washing machine, etc. IoT devices can include sensors, smart meters, etc. For example, base stations and networks can also be implemented as wireless devices, and a specific wireless device (200a) can act as a base station / network node to other wireless devices.

[0423] Wireless devices (100a to 100f) can be connected to a network (300) via a base station (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, etc. The wireless devices (100a to 100f) can communicate with each other via the base station (200) / network (300), but can also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to Everything) communication). In addition, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0424] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base stations (200), and base stations (200) / base stations (200). Here, wireless communication / connection can be achieved through various wireless access technologies (e.g., 5G NR) such as uplink / downlink communication (150a), sidelink communication (150b) (or, D2D communication), and communication between base stations (150c) (e.g., relay, IAB (Integrated Access Backhaul). Through wireless communication / connection (150a, 150b, 150c), wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals to each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, at least some of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and resource allocation processes can be performed based on various proposals of the present specification.

[0425] Meanwhile, NR supports multiple numerologies (or subcarrier spacing (SCS)) to support various 5G services. For example, an SCS of 15 kHz supports a wide area in traditional cellular bands; an SCS of 30 kHz / 60 kHz supports dense urban areas, lower latency, and wider carrier bandwidth; and an SCS of 60 kHz or higher supports a bandwidth greater than 24.25 GHz to overcome phase noise.

[0426] The NR frequency band can be defined by two types of frequency ranges (FR1, FR2). The numerical values ​​of the frequency ranges can be changed, and for example, the two types of frequency ranges (FR1, FR2) can be as shown in Table 5 below. For convenience of explanation, among the frequency ranges used in the NR system, FR1 (frequency range 1) can mean the “sub 6 GHz range”, and FR2 (frequency range 2) can mean the “above 6 GHz range” and can be called millimeter wave (mmW).

[0427] [Table 5]

[0428]

[0429] As described above, the numerical value of the frequency range of the NR system can be changed. For example, FR1 may include a band from 410 MHz to 7125 MHz, as shown in Table 6 below. That is, FR1 may include a frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.). For example, the frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.) included within FR1 may include an unlicensed band. The unlicensed band may be used for various purposes, such as for vehicular communications (e.g., autonomous driving).

[0430] [Table 6]

[0431]

[0432] The claims set forth in this specification may be combined in various ways. For example, the technical features of the method claims of this specification may be combined and implemented as a device, and the technical features of the device claims of this specification may be combined and implemented as a method. Furthermore, the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a device, and the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a method.

Claims

1. In the method, The terminal receives downlink data from the network in the first slot, and The terminal determines a second slot for transmitting HARQ-ACK (hybrid automatic repeat request-acknowledgement) information for the downlink data to the network, A method characterized in that, when the second slot is an FD slot configured with FD (full duplex) resources, the terminal transmits the HARQ-ACK information in a third slot, which is an HD slot configured with HD (half duplex) resources located next to the FD slot.

2. A method according to claim 1, wherein the HD slot is one of a downlink slot, a flexible slot, or an uplink slot, and the third slot is the uplink slot.

3. A method characterized in that, in the first paragraph, if the second slot is an HD slot, if the HD slot is a downlink slot, the HARQ-ACK information is transmitted in the third slot, and if the HD slot is an uplink slot, the HARQ-ACK information is transmitted in the second slot.

4. In the first paragraph, when the first slot is referred to as slot n and the second slot is referred to as slot n+k, a method characterized in that the value of k is indicated by a specific field of downlink control information (DCI) that schedules a physical downlink shared channel (PDSCH) whose reception is terminated in slot n.

5. A method according to claim 1, wherein when the first slot is referred to as slot n and the second slot is referred to as slot n+k, the value of k is provided by a higher layer parameter.

6. A method characterized in that, in the first paragraph, information indicating the maximum value of the gap between the second slot and the third slot is received.

7. A method according to claim 6, characterized in that the maximum value of the gap is related to the number of HD slots after the second slot.

8. In the first paragraph, the terminal determines a fourth slot to transmit uplink control information (UCI). A method characterized in that, when the fourth slot is an FD slot composed of FD (full duplex) resources, the terminal transmits the UCI in a fifth slot, which is an HD slot composed of HD (half duplex) resources located next to the FD slot.

9. A method according to claim 8, characterized in that the maximum value of the gap between the fourth slot and the fifth slot is applied differently depending on the type of the UCI.

10. A method characterized in that, in the first paragraph, information indicating the maximum value of the gap between the first slot and the third slot is received.

11. The terminal is, At least one transceiver; At least one memory; and At least one processor operably coupled with said at least one memory and said at least one transceiver, wherein said at least one memory comprises instructions that are executed by said at least one processor to perform operations, The above actions are, The terminal receives downlink data from the network in the first slot, and The terminal determines a second slot for transmitting HARQ-ACK (hybrid automatic repeat request-acknowledgement) information for the downlink data to the network, A terminal characterized in that, when the second slot is an FD slot configured with FD (full duplex) resources, the terminal transmits the HARQ-ACK information in a third slot, which is an HD slot configured with HD (half duplex) resources located next to the FD slot.

12. A terminal characterized in that in the 11th paragraph, the HD slot is one of a downlink slot, a flexible slot, or an uplink slot, and the third slot is the uplink slot.

13. In the 11th paragraph, if the second slot is an HD slot, if the HD slot is a downlink slot, the terminal transmits the HARQ-ACK information in the third slot, and if the HD slot is an uplink slot, the terminal transmits the HARQ-ACK information in the second slot.

14. In the 11th paragraph, when the first slot is referred to as slot n and the second slot is referred to as slot n+k, a terminal characterized in that the value of k is indicated by a specific field of downlink control information (DCI) that schedules a physical downlink shared channel (PDSCH) whose reception is terminated in slot n.

15. A terminal characterized in that in the 11th paragraph, when the first slot is referred to as slot n and the second slot is referred to as slot n+k, the value of k is provided by an upper layer parameter.

16. A terminal characterized in that, in the 11th clause, information indicating the maximum value of the gap between the second slot and the third slot is received.

17. A terminal according to claim 16, wherein the maximum value of the gap is related to the number of HD slots after the second slot.

18. In paragraph 11, the terminal determines a fourth slot to transmit uplink control information (UCI). A terminal characterized in that, when the fourth slot is an FD slot composed of FD (full duplex) resources, the terminal transmits the UCI in a fifth slot, which is an HD slot composed of HD (half duplex) resources located next to the FD slot.

19. A terminal characterized in that, in clause 18, the maximum value of the gap between the fourth slot and the fifth slot is applied differently depending on the type of the UCI.

20. The device, At least one memory; and At least one processor operably coupled to at least one memory, wherein said at least one memory comprises instructions that are executed by said at least one processor to perform operations, The above actions are, The terminal receives downlink data from the network in the first slot, and The terminal determines a second slot for transmitting HARQ-ACK (hybrid automatic repeat request-acknowledgement) information for the downlink data to the network, A device characterized in that, when the second slot is an FD slot configured with FD (full duplex) resources, the terminal transmits the HARQ-ACK information in a third slot, which is an HD slot configured with HD (half duplex) resources located next to the FD slot.

21. At least one computer readable medium (CRM) containing instructions based on being executed by at least one processor, Receive downlink data from the network in the first slot, and Determine a second slot for transmitting HARQ-ACK (hybrid automatic repeat request-acknowledgement) information for the downlink data to the above network, CRM characterized in that, when the second slot is an FD slot composed of FD (full duplex) resources, the terminal transmits the HARQ-ACK information in a third slot, which is an HD slot composed of HD (half duplex) resources located next to the FD slot.

22. In the method, The base station transmits downlink data to the terminal in the first slot, and The base station determines a second slot in which to receive HARQ-ACK (hybrid automatic repeat request-acknowledgement) information for the downlink data from the terminal, A method characterized in that, when the second slot is an FD slot configured with FD (full duplex) resources, the base station receives the HARQ-ACK information in a third slot, which is an HD slot configured with HD (half duplex) resources located next to the FD slot.

23. The base station, At least one transceiver; At least one memory; and At least one processor operably coupled with said at least one memory and said at least one transceiver, wherein said at least one memory comprises instructions that are executed by said at least one processor to perform operations, The above actions are, Transmit downlink data to the terminal in the first slot, and Including determining a second slot for receiving HARQ-ACK (hybrid automatic repeat request-acknowledgement) information for the downlink data from the terminal, A base station characterized in that, when the second slot is an FD slot configured with FD (full duplex) resources, the HARQ-ACK information is received in a third slot, which is an HD slot configured with HD (half duplex) resources located next to the FD slot.

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