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

Abstract

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

Description

Technical Field

[0001] This disclosure relates to a method for operating a device in a wireless communication system and an apparatus for using the method. Background Technology

[0002] With an increasing number of communication devices requiring greater communication capacity, there is a need for improved mobile broadband communications compared to existing radio access technologies. Furthermore, massive machine-type communication (MTC) that provides various services by connecting numerous devices and multiple objects is also one of the main issues to be considered in next-generation communications. Additionally, communication system designs considering reliability / latency-sensitive services / UEs are being discussed. The introduction of next-generation radio access technologies considering enhanced mobile broadband (eMBB), massive MTC (mMTC), and ultra-reliable low latency communication (URLLC) is being discussed. In this disclosure, for convenience, such new technologies may be referred to as new radio access technologies (new RAT or NR).

[0003] In NR or post-NR wireless communication systems, full-duplex (FD) operation can be performed. When performing FD operation, the device can simultaneously perform reception and transmission within a specific time resource. Half-duplex (HD) operation differs in that only reception or transmission can be performed within a given time resource.

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

[0005] On the other hand, when the device is configured with time / frequency resources (which may be referred to as FD resources) that operate in FD mode and / or support FD, the channel environment may be worse than that configured with time / frequency resources (which may be referred to as HD resources) that operate in HD mode due to cross-link interference (CLI), self-interference (SI), etc.

[0006] Therefore, when important control information (e.g., uplink control information (UCI)) is transmitted through FD resources, the receiver may not be able to successfully receive the UCI due to poor channel conditions.

[0007] In view of the above problems, there is a need for a method and apparatus for determining time resources for transmitting UCI in a communication system that supports FD operation. Summary of the Invention

[0008] Technical issues

[0009] The technical problem to be solved by this disclosure is to provide a method for operating a device in a wireless communication system and an apparatus for using the method.

[0010] Technical solution

[0011] A method for operating a device in a wireless communication system and an apparatus using the method are provided. According to the method, a UE receives downlink data from a network in a first time slot, and the UE determines a second time slot for sending Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) information for the downlink data to the network. In this case, when the second time slot is an FD time slot consisting of full-duplex (FD) resources, the UE sends the HARQ-ACK information in a third time slot consisting of half-duplex (HD) resources and located after the FD time slot.

[0012] In another aspect, a UE, a device, and a computer-readable medium for performing the above-described methods are provided.

[0013] In another aspect, a method for operating a base station and a base station using the method are provided. According to the method for operating the base station, the base station transmits downlink data to a UE in a first time slot and determines a second time slot from which to receive HARQ-ACK information for the downlink data from the UE. In this case, when the second time slot is an FD time slot composed of FD resources, the base station receives the HARQ-ACK information in a third time slot, the third time slot being an HD time slot composed of HD resources and located after the FD time slot.

[0014] Beneficial effects

[0015] In wireless communication systems that include UEs supporting both FD and HD operations, UCIs can be prevented from being transmitted through FD resources where the channel state may be worse than the channel state targeted by the base station. Therefore, UCIs can be reliably transmitted even in wireless communication systems that support FD operations.

[0016] Furthermore, when different types of resources (i.e., FD resources and HD resources) coexist, it is possible to clearly define which resource to use to send the UCI, thereby preventing ambiguity between the sending and receiving entities. Attached Figure Description

[0017] Figure 1 An example of a wireless communication system to which this disclosure can be applied is shown.

[0018] Figure 2 This is a block diagram illustrating the radio protocol architecture for the user plane.

[0019] Figure 3This is a block diagram illustrating the radio protocol architecture used for the control plane.

[0020] Figure 4 An example of a system architecture for a next-generation radio access network (NG-RAN) using NR is presented.

[0021] Figure 5 This illustrates the functional division between NG-RAN and 5GC.

[0022] Figure 6 An example of a frame structure that can be applied to NR is shown.

[0023] Figure 7 The time slot structure of an NR frame is illustrated.

[0024] Figure 8 An example of CORESET is shown.

[0025] Figure 9 An example of a frame structure for a new radio access technology is shown.

[0026] Figure 10 An example of a self-contained time slot structure is shown.

[0027] Figure 11 The physical channel and typical signal transmission are illustrated.

[0028] Figure 12 This is an example of the repeating type A of PUSCH.

[0029] Figure 13 This is an example of the repeating type B of PUSCH.

[0030] Figure 14 An example of how to apply full-duplex (FD) within a carrier wave is shown.

[0031] Figure 15 An example is shown where time resources operating in half-duplex (HD) and time resources operating in full-duplex (FD), such as SBFD or SSFD, coexist.

[0032] Figure 16 Examples of first time resources, second time resources, first frequency resources, and second frequency resources are shown.

[0033] Figure 17 Another example of first time resources, second time resources, first frequency resources, and second frequency resources is shown.

[0034] Figure 18 A method for sending HARQ-ACK information for a UE is shown.

[0035] Figure 19 An example of a delayed UCI transmission method is shown.

[0036] Figure 20 The operation method of a UE in a wireless communication system is shown.

[0037] Figure 21 The signaling process and operation between the base station and the UE are shown.

[0038] Figure 22 A wireless device applicable to this specification is shown.

[0039] Figure 23 An example of the signal processing module structure is shown.

[0040] Figure 24 Another example of the structure of a signal processing module in a transmitting device is shown.

[0041] Figure 25 An example of a wireless communication device according to an embodiment of this disclosure is shown.

[0042] Figure 26 Another example of a wireless device is shown.

[0043] Figure 27 The communication system 1 used in this specification is shown. Detailed Implementation

[0044] In this specification, “A or B” may mean “A only”, “B only”, or “both A and B”. In other words, in this specification, “A or B” may be interpreted as “A and / or B”. For example, in this specification, “A, B or C” may mean “A only”, “B only”, “C only”, or “any combination of A, B, and C”.

[0045] The forward slash ( / ) or comma used in this specification can mean "and / or". For example, "A / B" can mean "A and / or B". Therefore, "A / B" can mean "A only", "B only", or "both A and B". For example, "A, B, C" can mean "A, B, or C".

[0046] 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 expression "at least one of A or B" or "at least one of A and / or B" may be interpreted as "at least one of A and B".

[0047] Additionally, in this specification, "at least one of A, B, and C" may mean "A only", "B only", "C only" or "any combination of A, B, and C". Furthermore, "at least one of A, B, or C" or "at least one of A, B, and / or C" may mean "at least one of A, B, and C".

[0048] Additionally, the parentheses used in this specification may mean "for example". Specifically, when indicated as "Control Message (PDCCH)", this may mean that "PDCCH" is cited as an example of "control message". In other words, "control message" in this specification is not limited to "PDCCH", and "PDDCH" may be cited as an example of "control message". Specifically, when indicated as "Control Message (i.e., PDCCH)", this may also mean that "PDCCH" is cited as an example of "control message".

[0049] The technical features described individually in one of the accompanying drawings in this specification can be implemented individually or simultaneously.

[0050] The accompanying drawings below are used to illustrate specific embodiments of this specification. Because specific names of devices or signals / messages / fields described in the drawings are presented illustratively, the technical features of this specification are not limited to the specific names used in the following drawings.

[0051] Figure 1 This illustrates a wireless communication system to which this disclosure can be applied. This may also be referred to as an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) or an LTE (Long Term Evolution) / LTE-A system.

[0052] E-UTRAN includes a base station (BS) 20, which provides the control plane and user plane to the user equipment (UE) 10. The UE 10 can be fixed or mobile and can be referred to by other terms such as mobile station (MS), user terminal (UT), subscriber station (SS), mobile terminal (MT), radio device, terminal, etc. The BS 20 is generally a fixed station that communicates with the UE 10 and can be referred to by other terms such as evolved Node B (eNB), base transceiver system (BTS), access point, etc.

[0053] The BS interconnects via the X2 interface. The BS also connects to the Evolved Packet Core (EPC) 30 via the S1 interface, and more specifically, to the Mobility Management Entity (MME) via the S1-MME, and to the Serving Gateway (S-GW) via the S1-U.

[0054] EPC 30 includes an MME, an S-GW, and a Packet Data Network Gateway (P-GW). The MME contains UE access information or UE capability information, which is generally used for UE mobility management. The S-GW is a gateway with E-UTRAN as its endpoint. The P-GW is a gateway with PDN as its endpoint.

[0055] The radio interface protocol layer between the UE and the network can be divided into three layers—Layer 1 (L1), Layer 2 (L2), and Layer 3—based on the well-known Open Systems Interconnection (OSI) model in communication systems. The Physical Layer (PHY), belonging to Layer 1, provides information transmission services using physical channels. The Radio Resource Control (RRC) layer, belonging to Layer 3, controls radio resources between the UE and the network; therefore, the RRC layer exchanges RRC messages between the UE and the BS.

[0056] Figure 2 This is a block diagram illustrating the radio protocol architecture used in the user plane. Figure 3 This is a block diagram illustrating the radio protocol architecture used for the control plane. The user plane is the protocol stack used for user data transmission. The control plane is the protocol stack used for control signal transmission.

[0057] Reference Figure 2 and Figure 3 The PHY layer provides information transmission services to higher layers (i.e., higher-level layers) via physical channels. The PHY layer connects to the Media Access Control (MAC) layer, which is higher up, via transport channels. Data is transmitted between the MAC layer and the PHY layer via transport channels. Transport channels are classified according to how data is transmitted through the radio interface and the characteristics of the data.

[0058] Data moves between different PHY layers (i.e., the transmitter's PHY layer and the receiver's PHY layer) via physical channels. Physical channels can be modulated according to orthogonal frequency division multiplexing (OFDM) schemes and use time and frequency as radio resources.

[0059] The MAC layer's functions include mapping between logical channels and transport channels, as well as multiplexing and demultiplexing into transport blocks provided via physical channels on the transport channels of MAC Service Data Units (SDUs) that belong to the logical channels. The MAC layer provides services to the Radio Link Control (RLC) layer through logical channels.

[0060] The RLC layer's functions include the concatenation, segmentation, and reassembly of RLC SDUs. To ensure the various types of Quality of Service (QoS) required for 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 via Automatic Repeat Request (ARQ).

[0061] The RRC layer is defined only on the control plane. The RRC layer is associated with the configuration, reconfiguration, and release of radio bearers, and is responsible for the control of logical channels, transport channels, and PHY channels. RB represents the logical path provided by Layer 1 (PHY layer) and Layer 2 (MAC layer, RLC layer, and PDCP layer) for transmitting data between the UE and the network.

[0062] The Packet Data Convergence Protocol (PDCP) layer on the user plane performs functions including the transmission of user data and header compression and encryption. The PDCP layer on the user plane also performs functions related to the transmission of control plane data and encryption / integrity protection.

[0063] RB configuration refers to defining the characteristics of the radio protocol layer and channel to provide specific services and configuring various detailed parameters and operating methods. RBs can be divided into two types: Signaling RB (SRB) and Data RB (DRB). SRB is used as the channel for sending RRC messages in the control plane, while DRB is used as the channel for sending user data in the user plane.

[0064] If an RRC connection is established between the UE's RRC layer and the E-UTRAN's RRC layer, the UE is in RRC connected state. Otherwise, the UE is in RRC idle state.

[0065] Downlink transport channels used for transmitting data from the network to the UE include a broadcast channel (BCH) for transmitting system information and a downlink shared channel (SCH) for transmitting user service or control messages. Service or control messages for downlink multicast or broadcast services can be transmitted via the downlink SCH, or via a separate downlink multicast channel (MCH). Furthermore, UL transmission channels used for transmitting data from the UE to the network include a random access channel (RACH) for transmitting initial control messages and an uplink shared channel (SCH) for transmitting user service or control messages.

[0066] The logical channels located above the transport channel and mapped to the transport channel include the Broadcast Control Channel (BCCH), Paging Control Channel (PCCH), Common Control Channel (CCCH), Multicast Control Channel (MCCH), and Multicast Service Channel (MTCH).

[0067] A physical channel comprises multiple OFDM symbols in the time domain and multiple subcarriers in the frequency domain. A subframe comprises multiple OFDM symbols in the time domain. A Resource Allocation Unit (RB) is a unit of resource allocation that includes multiple OFDM symbols and multiple subcarriers. Additionally, each subframe may allocate specific subcarriers of a specific OFDM symbol (e.g., the first OFDM symbol) to the Physical Downlink Control Channel (PDCCH), i.e., the L1 / L2 control channel. The Transmission Time Interval (TTI) is the unit of time for subframe transmission.

[0068] The following section describes the new radio access technology (New RAT, NR).

[0069] With an increasing number of communication devices requiring greater communication capacity, there is a need for improved mobile broadband communications compared to existing radio access technologies. Furthermore, massive machine-type communication (MTC) that provides various services by connecting numerous devices and multiple objects is also one of the main issues to be considered in next-generation communications. Additionally, communication system designs considering reliability / latency-sensitive services / UEs are being discussed. The introduction of next-generation radio access technologies considering enhanced mobile broadband (eMBB), massive MTC (mMTC), and ultra-reliable low latency communication (URLLC) is being discussed. In this disclosure, for convenience, such new technologies may be referred to as new radio access technologies (new RAT or NR).

[0070] Figure 4 An example of a system architecture for a next-generation radio access network (NG-RAN) using NR is presented.

[0071] Reference Figure 4 NG-RAN may include gNBs and / or eNBs that provide user plane and control plane protocol termination to the UE. Figure 4 This example illustrates the case involving only the gNB. The gNB (eNB) connects via the Xn interface. Both the gNB and eNB connect to the 5G core network (5GC) via the NG interface. More specifically, the gNB and eNB connect 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.

[0072] Figure 5 This illustrates the functional division between NG-RAN and 5GC.

[0073] Reference Figure 5The gNB can provide functions such as Inter-Cell Radio Resource Management (IRM), Radio Bearer Management (RB) control, Connection Mobility Control, Radio Access Control, Measurement Configuration and Provisioning, 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 can provide functions such as UE IP Address Allocation and PDU Session Control.

[0074] Figure 6 An example of a frame structure that can be applied to NR is shown.

[0075] Reference Figure 6 In NR, radio frames (hereinafter also referred to as frames) can be used for both UL transmission and downlink transmission. The frame length is 10ms, which can be defined as two 5ms half-frames (HF). HF can be defined as five 1ms subframes (SF). SF can be divided into one or more time slots, the number of time slots within an SF depending on the subcarrier spacing (SCS). Each time slot includes 12 or 14 OFDM (A) symbols depending on the cyclic prefix (CP). With normal CP, each time slot includes 14 symbols. With extended CP, each time slot includes 12 symbols. Here, symbols can include OFDM symbols (or CP-OFDM symbols) and single-carrier-FDMA (SC-FDMA) symbols (or Discrete Fourier Transform Spread Spectrum-OFDM (DFT-s-OFDM) symbols).

[0076] Table 1 below illustrates the subcarrier spacing configuration μ.

[0077] [Table 1]

[0078] Table 2 below illustrates the number of time slots (N) in a frame configured with subcarrier spacing μ. frame,μ slot The number of time slots in a subframe (N) subframe,μ slot ), the number of symbols in a time slot (N) slot symb )wait.

[0079] [Table 2]

[0080] exist Figure 6 The example shows the cases where μ = 0, 1, 2, and 3.

[0081] Table 2-1 below illustrates how the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary depending on the SCS when using extended CP.

[0082] [Table 2-1]

[0083] In NR systems, OFDM(A) parameter sets (e.g., SCS, CP length, etc.) can be configured differently across multiple cells merged into a single UE. Therefore, the (absolute time) duration of time resources (e.g., SF, time slots, or TTI) consisting of the same number of symbols (collectively referred to as Time Units (TUs) for simplicity) can be configured differently across merged cells.

[0084] Figure 7 The time slot structure is illustrated.

[0085] A time slot can include multiple symbols in the time domain. For example, in the case of normal CP, a time slot can include 14 symbols (or 7 symbols), but in the case of extended CP, a time slot can include 12 symbols (or 6 symbols). A carrier can include multiple subcarriers in the frequency domain. A resource block (RB) can be defined as multiple consecutive subcarriers in the frequency domain (e.g., 12 subcarriers). A bandwidth portion (BWP) can be defined as multiple consecutive (physical) resource blocks (P) RBs in the frequency domain, and a BWP can correspond to a set of parameters (e.g., SCS, CP length, etc.). A carrier can include up to N (e.g., 5) BWPs. Data communication can be performed through active BWPs, and only one BWP can be activated for a UE. In the resource grid, each element can be called a resource element (RE), and a complex symbol can be mapped to an RE.

[0086] The Physical Downlink Control Channel (PDCCH) may include one or more Control Channel Elements (CCEs), as illustrated in Table 3 below.

[0087] [Table 3]

[0088] In other words, PDCCH can be transmitted through resources including 1, 2, 4, 8, or 16 CCEs. Here, a CCE includes six Resource Element Groups (REGs), and a REG includes a resource block in the frequency domain and an orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

[0089] The monitoring implies decoding each PDCCH candidate according to the downlink control information (DCI) format. The UE monitors a set of PDCCH candidates in one or more CORESETs (described below) on the active DL BWP of each active serving cell configured with PDCCH monitoring, based on the corresponding search space set.

[0090] In NR, a new unit called the Control Resource Set (CORESET) can be introduced. The UE can receive the PDCCH in the CORESET.

[0091] Figure 8 An example of CORESET is shown.

[0092] Reference Figure 8 CORESET includes N in the frequency domain. CORESET RB N in the resource block and time domain CORESET symb ∈{1, 2, 3} symbols. N can be provided by the base station via higher-layer signaling. CORESET RB and N CORESET symb .like Figure 8 As illustrated, a CORESET may include multiple CCEs (or REGs).

[0093] The UE can attempt to detect PDCCH in units of 1, 2, 4, 8, or 16 CCEs in the CORESET. One or more CCEs that can be attempted for PDCCH detection can be referred to as PDCCH candidates.

[0094] Multiple CORESETs can be configured for a UE.

[0095] The control area of ​​the wireless communication system (e.g., LTE / LTE-A) of the relevant technology is configured on the entire system BW used by the base station (BS). All UEs except for some UEs that only support narrowband (e.g., eMTC / NB-IoT UEs) must be able to receive the wireless signals of the entire system BW of the BS in order to properly receive / decode the control information sent by the BS.

[0096] On the other hand, NR introduces the aforementioned CORESET. A CORESET is a radio resource used to transmit control information received by the UE, and it can utilize only a portion of the system bandwidth instead of the entire system bandwidth. The BS can allocate CORESETs to each UE and can transmit control information through the allocated CORESETs. In NR, the UE can receive control information from the BS without having to receive the entire system bandwidth.

[0097] CORESET can include UE-specific CORESET for sending UE-specific control information and public CORESET for sending common control information for all UEs.

[0098] On the other hand, depending on the application domain, NR may require high reliability. In this case, the target block error rate (BLER) of downlink control information (DCI) transmitted via a downlink control channel (e.g., physical downlink control channel (PDCCH)) can be significantly reduced compared to existing technologies. As an example of a method to meet the requirement of high reliability, the amount of content included in the DCI can be reduced and / or the amount of resources used when transmitting the DCI can be increased. In this case, resources may include at least one of resources in the time domain, resources in the frequency domain, resources in the code domain, and resources in the spatial domain.

[0099] The following technologies / features can be applied in NR.

[0100] <Self-contained subframe structure>

[0101] Figure 9 An example of a frame structure for a new radio access technology is shown.

[0102] In NR, such as Figure 9 As shown, the structure in which the control channel and data channel are time-division multiplexed within a TTI can be regarded as a frame structure in order to minimize the waiting time.

[0103] Figure 9 An example is shown where the downlink control area is located at the beginning of the TTI, and the uplink control area is located at the end of the TTI. The area between the downlink and uplink control areas can be used for the transmission of downlink data (DL data) or uplink data (UL data). This structure is characterized by sequentially performing downlink (DL) reception and uplink (UL) transmission within a subframe / slot, allowing DL data to be received and UL ACK / NACK (acknowledgment / negative acknowledgment) to be sent within a subframe / slot. As a result, the time spent until data retransmission in the event of a data transmission error is reduced, and therefore the latency for eventual data delivery can be minimized.

[0104] As mentioned above, in the subframe structure of data and control TDM, there may be time intervals required for the base station and UE to switch from transmit mode to receive mode or from receive mode to transmit mode. Therefore, some OFDM symbols during the DL to UL handover can be set as guard periods (GP) in the self-contained subframe structure.

[0105] Figure 10 An example of a self-contained time slot structure is shown.

[0106] In an NR system, a timeslot can contain DL control channels, DL or UL data, and UL control channels. For example, the first N symbols in a timeslot (hereinafter, the DL control area) can be used to transmit DL control channels, and the last M symbols in the timeslot (hereinafter, the UL control area) can be used to transmit UL control channels. N and M are both integers greater than or equal to 0. The resource area (hereinafter, the data area) located between the DL control area and the UL control area can be used for either DL data transmission or UL data transmission. For example, consider the following configuration. The time slots are listed in chronological order.

[0107] 1. DL configuration only. 2. UL configuration only. 3. Hybrid UL-DL configuration, - DL area + GP (protection period) + UL control area - DL control area + GP + UL area.

[0108] DL regions: (i) DL data region, (ii) DL control region + DL data region

[0109] UL area: (i) UL data area, (ii) UL data area + UL control area.

[0110] In the DL control area, the PDCCH can be transmitted, and in the DL data area, the Physical Downlink Shared Channel (PDSCH) can be transmitted. In the UL control area, the Physical Uplink Control Channel (PUCCH) can be transmitted, and in the UL data area, the Physical Uplink Shared Channel (PUSCH) can be transmitted. Downlink control information (DCI), such as DL data scheduling information or UL data scheduling information, can be transmitted on the PDCCH. Uplink control information (UCI), such as ACK / NACK information for DL ​​data, Channel State Information (CSI) information, or Scheduling Request (SR), can be transmitted on the PUCCH. GP provides time slots during the transition from TX mode to RX mode in the gNB and UE, or during the transition from RX mode to TX mode in the gNB and UE. Some symbols within a subframe during the transition from DL to UL can be configured as GP.

[0111] <Simulated Beamforming #1>

[0112] The wavelength is shortened to millimeter wave (mmW), thus allowing a large number of antenna elements to be installed in the same area. That is, the wavelength is 1 cm at 30 GHz, so a total of 100 antenna elements can be installed in a two-dimensional array in a 5×5 cm panel with a spacing of 0.5λ (wavelength). Therefore, a large number of antenna elements can be used in mmW to increase beamforming (BF) gain, thereby increasing coverage or improving throughput.

[0113] In this scenario, if transceiver units (TXRUs) are provided to adjust the transmit power and phase of each antenna element, independent beamforming for each frequency resource can be performed. However, installing TXRUs for all approximately 100 antenna elements is cost-inefficient. Therefore, a method using analog phase shifters to map a large number of antenna elements to a single TXRU and control the beam direction is considered. This analog beamforming can only form a beam direction across all frequency bands, thus failing to provide frequency-selective beamforming.

[0114] Hybrid beamforming (BF) with B TXRUs (less than Q antenna elements) can be considered an intermediate form between digital BF and analog BF. In this case, the number of beam directions that can be transmitted simultaneously is limited to B, although this number depends on the method of connecting the B TXRUs and Q antenna elements.

[0115] <Simulated Beamforming #2>

[0116] When multiple antennas are used in NR (Radio Frequency I / O), hybrid beamforming, a combination of digital and analog beamforming, emerges. Here, in analog beamforming (or RF beamforming), precoding (or combination) is performed at the RF end, thus achieving performance similar to digital beamforming while reducing the number of RF chains and D / A (or A / D) converters. For ease of description, the hybrid beamforming structure can be represented by N TXRUs and M physical antennas. Then, the digital beamforming of the L data layers transmitted at the transmitter can be represented by an N×L matrix. The converted N digital signals are then converted into analog signals via TXRUs and applied using an analog beamforming matrix represented by an M×N matrix.

[0117] System information for the NR system can be broadcast. In this case, analog beams belonging to different antenna panels can be transmitted simultaneously within a single symbol. A scheme is being discussed to introduce a beam RS (BRS) as a reference signal (RS) transmitted by applying a single analog beam (corresponding to a specific antenna panel) to measure the channel of each analog beam. The BRS can be defined for multiple antenna ports, and each antenna port of the BRS can correspond to a single analog beam. In this case, unlike the BRS, a synchronization signal or xPBCH can be transmitted by applying all analog beams within a group of analog beams so that it can be correctly received by any UE.

[0118] In NR, in the time domain, a synchronization signal block (SSB, or also known as the synchronization signal and physical broadcast channel (SS / PBCH)) can consist of four OFDM symbols indexed in ascending order from 0 to 3 within the synchronization signal block, and the PBCH associated with the primary synchronization signal (PSS), secondary synchronization signal (SSS), and demodulation reference signal (DMRS) can be mapped to symbols. As mentioned above, a synchronization signal block can also be represented by an SS / PBCH block.

[0119] In NR, since multiple synchronization signal blocks (SSBs) can be transmitted at different times and SSBs can be used to perform initial access (IA), serving cell measurements, etc., it is preferable to transmit the SSB first when its transmission time and resources overlap with those of other signals. For this purpose, the network can broadcast the transmission time and resource information of the SSBs or indicate them through UE-specific RRC signaling.

[0120] In NR, beams can be used for both transmitting and receiving. If the receiving performance of the currently serving beam degrades, a process called beam fault recovery (BFR) can be performed to search for a new beam.

[0121] Since BFR processing is not intended to declare errors or failures in the link between the network and the UE, it can be assumed that the connection to the current serving cell is preserved even if BFR processing is performed. During BFR processing, measurements of different beams configured by the network (which can be represented by CSI-RS port or Synchronization Signal Block (SSB) index) can be performed, and the optimal beam for the corresponding UE can be selected. The UE can perform BFR processing in a manner that associates RACH processing with the beam that produces good measurement results.

[0122] The Transmit Configuration Indicator (TCI) status will now be described. The TCI status can be configured for each CORESET of the control channel, and the parameters used to determine the RX beam of the UE can be determined based on the TCI status.

[0123] For each DL BWP of the serving cell, the UE can be configured for three or fewer CORESETs. Additionally, the UE can receive the following information for each CORESET.

[0124] 1) CORESET index p (e.g., one of 0 to 11, where the index of each CORESET can be uniquely determined within the BWP of a serving cell). 2) PDCCH DM-RS scrambling sequence initialization values, 3) The duration of CORESET in the time domain (which can be given in symbolic units). 4) Resource block set, 5) CCE to REG mapping parameters, 6) Antenna port quasi-co-addressing, which indicates the quasi-co-addressing (QCL) information of the DM-RS antenna ports used to receive PDCCH in each CORESET (from a set of antenna port quasi-co-addressings provided by a higher-layer parameter called "TCI-State"). 7) Indications for the presence of a Transmit Configuration Indicator (TCI) field in a specific DCI format sent by PDCCH in CORESET.

[0125] Quasi-co-located (QCL) will be described. If the characteristics of the channel through which a symbol at one antenna port is transmitted can be inferred from the characteristics of the channel through which a symbol at another antenna port is transmitted, then the two antenna ports are said to be quasi-co-located (QCL). For example, when two signals A and B are transmitted from the same transmit antenna array with the same / similar spatial filters applied, the two signals may experience the same / similar channel states. From the receiver's perspective, upon receiving one of the two signals, the other signal can be detected by using the channel characteristics of the received signal.

[0126] In this sense, when signals A and B are called quasi-co-located (QCL), it can mean that signals A and B experience similar channel conditions. Therefore, the channel information estimated for detecting signal A is also useful for detecting signal B. In this paper, channel conditions can be defined based on, for example, Doppler shift, Doppler spread, average delay, delay spread, and spatial reception parameters.

[0127] The “TCI-State” parameter associates one or two downlink reference signals with the corresponding QCL types (QCL types A, B, C, and D, see Table 4).

[0128] [Table 4]

[0129] Each “TCI-State” may include parameters for configuring the QCL relationship between one or two downlink reference signals and the DM-RS port of the PDSCH (or PDCCH) or the CSI-RS port of the CSI-RS resource.

[0130] Furthermore, for each DL BWP configured for a UE in a serving cell, the UE may provide 10 (or fewer) search space sets. For each search space set, the UE may provide at least one of the following information.

[0131] 1) Search space set index s (0≤s<40), 2) Correlation between CORESET p and search space set s, 3) PDCCH monitoring periodicity and PDCCH monitoring offset (slot unit), 4) PDCCH monitoring pattern within a slot (e.g., indicating the first symbol of CORESET in the slot used 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 a CSS (Common Search Space) or a USS (UE-Specific Search Space), etc.

[0132] In NR, CORESET #0 can be configured via PBCH (or UE-specific signaling used for handover, PSCell configuration, or BWP configuration). The search space (SS) set #0 configured via PBCH can monitor different offsets (e.g., slot offset, symbol offset) for each associated SSB. This may be necessary to minimize the timing of search space monitoring by the UE. Alternatively, this may be necessary to provide a beam scan control / data area capable of performing control / data transmission on a per-beam basis to persistently perform communication with the UE under optimal beam dynamic changes.

[0133] Figure 11 The physical channel and typical signal transmission are illustrated.

[0134] Reference Figure 11 In a wireless communication system, the UE receives information from the BS via the downlink (DL) and transmits information to the BS via the uplink (UL). The information transmitted / received by the BS and UE includes data and various control information, and various physical channels exist depending on the type / purpose of the information transmitted / received by the BS and UE.

[0135] When a UE is powered on again after a power outage or enters a new cell, it performs an initial cell search operation (S11) such as adjusting synchronization with the BS. For this purpose, the UE receives the primary synchronization channel (PSCH) and secondary synchronization channel (SSCH) from the BS to adjust synchronization with the BS and obtains information such as cell identity (ID). Additionally, the UE can receive the physical broadcast channel (PBCH) from the BS to obtain broadcast information within the cell. Furthermore, the UE can receive a downlink reference signal (DL RS) during the initial cell search step to identify the downlink channel state.

[0136] (Initial) Cell search is the process by which the UE obtains time and frequency synchronization with a cell and detects the cell ID of that cell. Cell search can be based on the cell's primary synchronization signal and secondary synchronization signal, and PBCH DMRS.

[0137] After completing the initial cell search, the UE can receive the Physical Downlink Control Channel (PDCCH) and its corresponding Physical Downlink Shared Channel (PDSCH) to obtain more specific system information (S12).

[0138] Subsequently, the UE can perform a random access procedure to complete access to the BS (S13 to S16). Specifically, the UE can send a preamble via the Physical Random Access Channel (PRACH) (S13) and receive a Random Access Response (RAR) to the preamble via the PDCCH and its corresponding PDSCH (S14). Afterward, the UE can send the Physical Uplink Shared Channel (PUSCH) using the scheduling information in the RAR (S15) and can perform a contention resolution procedure similar to that of the PDCCH and its corresponding PDSCH (which can be referred to as the process of receiving a contention resolution message) (S16).

[0139] After executing the above-mentioned procedures, the UE can perform PDCCH / PDSCH reception (S17) and PUSCH / Physical Uplink Control Channel (PUCCH) transmission (S18) as a typical uplink / downlink signal transmission process. The control information sent by the UE to the BS is called Uplink Control Information (UCI). UCI includes Hybrid Automatic Repeat and Request (HARQ) Acknowledgment (ACK) / Negative ACK (NACK), Scheduling Request (SR), Channel State Information (CSI), etc. CSI includes Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indicator (RI), etc. Typically, UCI is transmitted via PUCCH. However, when control information and data are to be transmitted simultaneously, UCI can be transmitted via PUSCH. Additionally, the UE can periodically transmit UCI via PUSCH based on network requests / instructions.

[0140] To ensure reasonable battery consumption when configuring bandwidth adaptation (BA), only one uplink BWP (bandwidth part) and one downlink BWP, or only one downlink / uplink BWP pair for each uplink carrier, can be activated at a time in the active serving cell, and all other BWPs configured in the UE can be disabled. In the disabled BWPs, the UE does not monitor the PDCCH and does not perform transmissions on the PUCCH, PRACH, and UL-SCH.

[0141] For BA (Balance of Entity), the UE's RX and TX bandwidths are not necessarily as wide as the cell's bandwidth and can be adjusted. That is, the bandwidth can be changed (e.g., reduced for low-activity periods to save power), the position in the frequency domain can be moved (e.g., to increase scheduling flexibility), and the subcarrier spacing can be changed (e.g., to allow different services). A subset of the cell's entire bandwidth is called the Bandwidth Part (BWP), and BA is obtained by configuring the BWP for the UE and by notifying the UE of the currently active BWP among the configured BWPs. When BA is configured, the UE only needs to monitor the PDCCH on one active BWP. That is, it does not need to monitor the PDCCH on the entire downlink frequency of the cell. A BWP inactivity timer (independent of the DRX inactivity timer mentioned above) is used to switch the active BWP to the default BWP. Specifically, the timer restarts when the PDCCH is successfully decoded, and switches to the default BWP when the timer expires.

[0142] The following section describes integrated access and backhaul link (IAB). For ease of explanation, the proposed approach is described based on the new RAT (NR) system, but the scope of systems applying the proposed approach can be extended beyond NR systems to other systems such as 3GPP LTE / LTE-A systems.

[0143] One of the potential technologies aimed at realizing future cellular network configuration scenarios and applications is a technology that supports wireless backhaul and relay links, which enables flexible and high-density deployment of NR cells without scaling up the transport network.

[0144] Compared with LTE, it is expected that in NR, larger bandwidths will be available together with the native deployment of massive MIMO or multi-beam systems (e.g., mmWave spectrum), thus creating opportunities for the research, development, and configuration of integrated access and backhaul links. It enables a denser network of self-backhauled NR cells in a more integrated way by establishing multiple control and data channels / processes defined as providing access to or from the UE. Such a system is called an integrated access and backhaul link (IAB).

[0145] The following definitions are made in this disclosure.

[0146] - AC(x): The access link between node (x) and the UE.

[0147] - BH(xy): The backhaul link between node (x) and node (y).

[0148] In this case, the node can refer to a donor gNB (DgNB) or a relay node (RN). Here, the DgNB or the donor node can be a gNB that provides the function of supporting the backhaul for IAB nodes.

[0149] When there are relay node 1 and relay node 2, and relay node 1 connects to relay node 2 via a backhaul link and relays the data transmitted and received by 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.

[0150] <PUSCH repetition>

[0151] In the standard specifications (e.g., NR Rel-15 / 16), PUSCH repetition types A and B are introduced. According to the PUSCH repetition type, transmission is performed as follows.

[0152] 1) PUSCH repetition type A

[0153] Figure 12 is an example of PUSCH repetition type A.

[0154] Refer to Figure 12PUSCH repetition type A is slot-based PUSCH repetition, and for each slot, repetition is performed using the same PUSCH start symbol position and PUSCH symbol length, such as... Figure 12 As shown. In this case, if the symbol resources constituting a specific PUSCH repetition contain invalid symbols that cannot be used for PUSCH transmission, they are discarded and the corresponding PUSCH repetition is not transmitted. For example, when a total of four PUSCH repetitions (Rep0, Rep1, Rep2, and Rep3) are transmitted in time slots N, N+1, N+2, and N+3 (one PUSCH repetition in each time slot), if the symbol resources constituting Rep1 include invalid symbols, the transmission of Rep1 is discarded, and only the transmissions of Rep0, Rep2, and Rep3 are performed. Therefore, the actual number of repetitions performed can be less than the configured number of repetitions.

[0155] For PUSCH repetition type A, frequency hopping can be configured for the UE via higher-layer parameters. One of two frequency hopping modes can be configured.

[0156] i) Intra-slot frequency hopping (intra-slot frequency hopping) is applicable to single-slot and multi-slot PUSCH transmission.

[0157] ii) Inter-slot frequency hopping is applicable to multi-slot PUSCH transmission.

[0158] 2) PUSCH repeat type B

[0159] Figure 13 This is an example of the repeating type B of PUSCH.

[0160] Reference Figure 13 Repeat PUSCH type B in units of the symbol length of the actual PUSCH sent. For example, as... Figure 13 In (a), when a PUSCH is sent over 10 symbols, PUSCH repetition is performed in units of 10 consecutive symbols. In this case, the repetition of PUSCH repetition time resources without considering slot boundaries, invalid symbols, etc., is called nominal repetition. Figure 13 (a) shows an example of configuring three nominal repeaters (denoted as N0, N1 and N2).

[0161] However, in cases of actual PUSCH duplication, a single PUSCH cannot be transmitted if it includes slot boundaries. That is, if the nominal PUSCH transmission includes slot boundaries (e.g., ...), Figure 13 In (a) N0, N2), two actual repetitions are executed with the time slot boundary as the boundary, such as Figure 13 As shown in (b). For example, in the case where the time slot boundary is the boundary, the nominal repetition N0 is performed with two actual repetitions (such as A0, A1).

[0162] Additionally, only consecutive symbols can be used to perform a single PUSCH transmission. If invalid symbols exist in the time resources where a PUSCH repetition should be sent, then consecutive symbols are used to form an actual repetition, with the invalid symbols as the boundary. For example, if symbols #0 to #9 constitute a nominal repetition and symbols #3 to #5 are invalid symbols, then symbols #0 to #2 and symbols #6 to #9 (excluding the invalid symbols) each constitute an actual repetition.

[0163] Invalid symbols can include the following: i) Downlink symbols configured via semi-static TDD UL-DL configuration, ii) Invalid symbol pattern configured via RRC (which can be configured via an invalid symbol pattern indicator). iii) SSB symbols configured via SIB1, and SSB symbols configured via "ServngCellConfigCommon". iv) Symbols for the PDCCH of SIB1, v) Invalid symbols for DL-UL switching configured via RRC.

[0164] If a symbol that cannot be used for PUSCH transmission (e.g., a DL symbol indicated by DCI format 2_0) is included in an actual duplicate resource, the corresponding actual duplicate transmission is discarded and not performed.

[0165] Now, we will describe full-duplex operation.

[0166] In 5G, new service types such as extended reality (XR), AI-based services, and autonomous vehicles are emerging. These services feature the ability to dynamically modify traffic in both the downlink (DL) and uplink (UL) directions and require low latency for the traffic to be sent, such as packets. Traffic will explode in 5G services to support these diverse new use cases.

[0167] Existing semi-static or dynamic TDD UL / DL configurations have limitations such as transmission time delay and inter-carrier interference. Existing FDD methods have limitations in terms of effective frequency resource utilization in the DL / UL direction. Therefore, to achieve low latency and efficient resource utilization in NR, the introduction of full-duplex operation within a single carrier is being discussed.

[0168] Figure 14 An example of how to apply full-duplex within a carrier wave is shown.

[0169] Reference Figure 14 Full-duplex methods include, for example, in Figure 14The sub-band full-duplex shown in (a) (which may be referred to as sub-band full-duplex or SBFD below) can also be considered as in Figure 14 The spectrum shared full-duplex (hereinafter, it may be referred to as SSFD) shown in (b) is shown.

[0170] In the case of SBFD, DL and UL transmit and receive using different frequency resources within the same carrier (e.g., carrier #0). That is, for the same time resource, different frequency resources are used in DL and UL.

[0171] In the case of SSFD, DL and UL transmit and receive using the same or overlapping frequency resources within the same carrier (e.g., carrier #0). That is, for the same time resources, the same or overlapping frequency resources can be used in DL and UL.

[0172] This full-duplex (FD) operation can also be used in conjunction with existing half-duplex (HD) operations. For example, some time resources used for existing half-duplex-based TDD operations can be used for full-duplex operations. SBFD or SSFD operations can be performed on the time resources used for full-duplex operations.

[0173] Figure 15 An example is shown where time resources operating in half-duplex (HD) and time resources operating in full-duplex (FD) (e.g., SBFD or SSFD) coexist.

[0174] exist Figure 15 In (a), some time resources that are SBFD (=SBFD) operations are designated as SBFD, while time resources that are HD operations are designated as HD. Figure 15 In (b), some time resources used as SSFD operations are designated as SSFD, while time resources used as HD operations are designated as HD. The unit of time resource can be, for example, a time slot or a symbol.

[0175] In the time resources used for SBFD operation, 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 and empty for both DL and UL. The guard subband may also be referred to by other terms, such as guard frequency resources or guard subcarriers.

[0176] In the time resources utilized for SSFD operation, the entire frequency resource can be used for both DL and UL. Alternatively, to reduce the impact of interference from other adjacent carriers (which can be referred to as ACI (Adjacent Carrier Interference)), some frequency resources located at one or both ends of the carrier can be not used for DL and / or UL. That is, one or both ends of the carrier can be used as unused guard bands (guard sub-bands) for both DL and UL. Alternatively, to reduce ACI on UL reception, one or both ends of the carrier can be used only for DL transmission.

[0177] In the present disclosure, the time slot resources for HD operation are referred to as HD time slots, and the time slot resources for SBFD operation and SSFD operation are referred to as SBFD time slots and SSFD time slots respectively. SBFD time slots and SSFD time slots are also collectively referred to as FD time slots.

[0178] In the present disclosure, in the time resources for FD operation, among all the frequency resources, for convenience, the frequency resources operating in DL can be referred to as DL sub-bands, and the frequency resources operating in UL can also be referred to as UL sub-bands.

[0179] In the case of full-duplex operation, both the base station and the UE can perform full-duplex operation. That is, both the base station and the UE can simultaneously perform DL and UL transmission and reception using the same or different frequency resources in the same time resource.

[0180] Alternatively, only the base station can perform full-duplex operation, while the UE can perform half-duplex operation. The base station can simultaneously perform DL and UL transmission and reception using the same or different frequency resources in the same time resource, but the UE only performs DL reception or UL transmission in specific time resources. In this case, the base station performs full-duplex operation by simultaneously performing DL transmission and UL reception with different UEs.

[0181] The content of the present disclosure is described under the assumption that the base station performs / supports full-duplex operation, but the UE performs / supports half-duplex operation. However, the content of the present disclosure can also be applied even if both the base station and the UE perform / support full-duplex operation.

[0182] <A. Characteristics of DL / UL Time / Frequency Resources for SBFD and SSFD Operations>

[0183] The cell (base station) can perform both DL transmission and UL reception in the same time resource in an FD scheme (e.g., 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 can be a time resource other than the first time resource).

[0184] Through this operation, the network can change the time resources used for transmission and reception between the first and second time resources, depending on the type of signal / channel to be transmitted and received or on the UE performing the transmission and reception. For example, for critical signals / channels less affected by interference and requiring improved transmission and reception performance (e.g., SSB and PRACH), resources can be configured such that transmission and reception are performed only in the first time resource, operating in half-duplex mode. Thus, while applying full-duplex to the cell, the transmission and reception performance of the signal / channel can be maintained. Alternatively, if the UE is significantly affected by CLI (Cross-Link Interference) when operating in full-duplex mode in the second time resource and therefore cannot properly perform transmission and reception, transmission and reception performance for the UE can be ensured by configuring resources to perform transmission and reception in the first time resource.

[0185] During the first time resource for HD operation, the UE / base station performs either DL or UL operation across all frequency resources constituting the entire system bandwidth. Within the first time resource for HD operation, the network performs DL operation via time resource 1-1 and UL operation via time resource 1-2. At this time, time resources 1-1 and 1-2 do not overlap.

[0186] In the second time resource for performing FD operation, the UE / base station performs DL operation through all or part of the frequency resources (first frequency resources) in the frequency resources of the system BW constituting the cell, and performs UL operation through all or part of the frequency resources (second frequency resources).

[0187] Figure 16 Examples of first time resources, second time resources, first frequency resources, and second frequency resources are shown.

[0188] Reference Figure 16 In (a), the operation is performed as HD in the first time resource (denoted by A). In the second time resource (denoted by B), for example, it can be performed as SBFD. In the first time resource, the resource indicated by DL corresponds to the 1-1 time resource described above, and the resource indicated by UL corresponds to the 1-2 time resource described above.

[0189] Reference Figure 16 (b) In the second time resource, the frequency resource for DL ​​operation corresponds to the first frequency resource, and the frequency resource for UL operation corresponds to the second frequency resource.

[0190] Figure 17 Another example of first time resources, second time resources, first frequency resources, and second frequency resources is shown.

[0191] Reference Figure 17 In (a), in the first time resource (labeled A), the device operates as a half-duplex. In the second time resource (labeled B), the device may, for example, operate as an SSFD. In the first time resource, the resource labeled DL corresponds to the aforementioned 1-1 time resource, and the resource labeled UL corresponds to the aforementioned 1-2 time resource.

[0192] Reference Figure 17 (b) In the second time resource, the frequency resource for DL ​​and DL+UL operations corresponds to the first frequency resource described above, and the frequency resource for DL+UL operations corresponds to the second frequency resource described above.

[0193] The first frequency resource and / or the second frequency resource may have all or some of the following characteristics.

[0194] 1) During SBFD operation, the first and second frequency resources do not overlap. This is to ensure that DL and UL operations are performed using different frequency resources. At this time, there may be frequency resources that do not correspond to both the first and second frequency resources, and these frequency resources are referred to as guard subbands or guard frequency resources. These guard frequency resources may be needed to reduce interference from DL transmissions to UL reception. Guard frequency resources can be located between the first and second frequency resources.

[0195] 2) During SSFD operation, the first and second frequency resources may overlap. In this case, there may be frequency resources that do not correspond to both the first and second frequency resources, and these frequency resources are referred to as guard subbands or guard frequency resources. These guard frequency resources may be needed to reduce interference from DL transmissions on adjacent carriers to UL reception, and / or to reduce interference from DL transmissions to UL receptions on adjacent carriers.

[0196] 3) During SBFD operation, the second frequency resource can consist of contiguous frequency resources, while the first frequency resource can consist of discontinuous frequency resources. In this case, the first frequency resource can consist of multiple (e.g., two) discontinuous sets, and each set can consist of contiguous frequency resources. This is to reduce interference from DL transmissions on adjacent carriers to the UL resource by placing the second frequency resource used for DL ​​at the center of the frequency resources constituting the cell. Conversely, the first frequency resource can consist of contiguous frequency resources, while the second frequency resource can consist of discontinuous frequency resources. In this case, the second frequency resource can consist of multiple (e.g., two) discontinuous sets, and each set can consist of contiguous frequency resources. This is to reduce interference from DL transmissions on adjacent carriers to the UL resource by placing the second frequency resource used for DL ​​at the center of the frequency resources constituting the cell.

[0197] 4) When performing SSFD operation, the second frequency resource can consist of some frequency resources from the first frequency resource. In this case, the second frequency resource can be configured to have X fewer physical resource blocks (PRBs) than the first frequency resource on one or both sides of the carrier. This is to reduce interference from DL transmissions on adjacent carriers to UL reception.

[0198] Through the above operations, the base station can perform half-duplex operation. In half-duplex operation, in the first time resource, only one of DL transmission or UL reception is performed in all frequency resources constituting the cell. It can also perform full-duplex operation. In full-duplex operation, in the second time resource, DL transmission is performed through the first frequency resource within the frequency resources constituting the cell, and UL reception is performed simultaneously through the second frequency resource within the frequency resources constituting the cell.

[0199] As described above, the network determines the 'first time resource' and 'second time resource', as well as the 'first frequency resource' and 'second frequency resource', and provides all or part of the corresponding information to the UE. The network can perform DL transmission to the UE in the 1-1 time resource within the first time resource and in the first frequency resource within the second time resource, and can perform UL reception from the UE in the 1-2 time resource within the first time resource and in the second frequency resource within the second time resource.

[0200] The network can provide the UE with all or some of the information regarding the aforementioned 'first time resource' and 'second time resource', as well as 'first frequency resource' and 'second frequency resource', and can determine the location of the resources. The UE can perform DL reception from the network through all or some of the 1-1 time resource within the first time resource and the first frequency resource within the second time resource, and can perform UL transmission to the network through the 1-2 time resource within the first time resource and the second frequency resource within the second time resource.

[0201] Meanwhile, in traditional NR TDD carriers, the base station performs only one operation—either downlink or uplink—during specific time resources. In this case, during the time resources for transmitting SSBs, the base station always operates in the downlink mode.

[0202] When the UE operates in the traditional TDD mode, the following assumptions are made for the symbols that transmit SSB (SS / PBCH).

[0203] 1) SS / PBCH transport symbols can be configured as uplinks without TDD configuration (e.g., 'TDD-UL-DL-ConfigCommon' and / or 'TDD-UL-DL-ConfigDedicated').

[0204] 2) SS / PBCH transmission symbols can be configured as uplinks in SFI (Slot Format Indication) without using DCI format 2_0.

[0205] 3) When SS / PBCH is transmitted in a flexible symbol configured via TDD (e.g., 'TDD-UL-DL-ConfigCommon' and / or 'TDD-UL-DL-ConfigDedicated'), uplink transmission is not performed if the UE's uplink transmission overlaps with the SS / PBCH symbol. In the case of SRS, SRS transmission is not performed in the overlapping symbol if SRS overlaps with the SS / PBCH symbol in a flexible symbol.

[0206] Furthermore, in FDs such as SBFD and SSFD, from the cell's perspective, DL resources and UL resources can both exist in the same time resources. Therefore, the base station can perform uplink reception while performing downlink transmission. Thus, even when transmitting SS / PBCH in the time resources for performing FD operation in the cell, the base station can perform uplink reception simultaneously.

[0207] Furthermore, under current standards and specifications, UEs cannot perform uplink transmissions within the symbol resources for transmitting SS / PBCH. That is, UEs cannot perform FD operations within the base station's SS / PBCH transmission time resources.

[0208] When a specific time resource is set as a time resource operating in SBFD mode (SBFD symbol), both DL (Deep Length) and UL (Ultra Length) resources can exist within 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 perform only DL transmission. In SBFD resources, DL transmission is only performed within the DL subband. Therefore, even if there is no UL signal to be transmitted in the UL subband, only DL transmission can be performed within the DL subband.

[0209] In this scenario, if the base station has no UL transmissions to receive, even if the resources at a specific time are designated as SBFD symbols, it can consider performing DL transmissions both outside and within the DL subband to improve DL throughput. In other words, it can consider performing DL transmissions across the entire frequency band.

[0210] In other words, for resources identified as SBFD symbols, it is possible to consider reverting to TDD operation, where DL or UL operation is performed across the entire frequency band, rather than SBFD operation on the DL / UL subband.

[0211] This disclosure provides a description assuming a cell simultaneously performs DL and UL SBFD operations using different frequency resources (e.g., subbands) within the same time resource. However, the contents of this disclosure can also be applied even when the cell performs SSFD operations.

[0212] In a wireless communication system, i) the base station can perform full-duplex operation and the UE can perform half-duplex operation, or ii) the base station can perform half-duplex operation and the UE can perform full-duplex operation. Alternatively, iii) both the base station and the UE can support full-duplex operation.

[0213] A UE that knows the base station can perform full-duplex operation will be referred to as a FD-aware UE in the following text. A UE that knows the base station can perform SBFD operation will be referred to as an SBFD-aware UE in the following text. A UE that knows the base station can perform SSFD operation will be referred to as an SSFD-aware UE in the following text.

[0214] When a base station supports both half-duplex and full-duplex operations, the base station can notify the UE of information about the resources (time and / or frequency) for which half-duplex and full-duplex operations can be performed (or are expected to be performed or are to be performed).

[0215] When the base station is a full-duplex base station capable of performing SSFD operation, UL reception can be possible simultaneously in some and / or all frequency resources where DL transmission is possible. That is, in some frequency resources, not only DL transmission / reception but also UL reception / transmission is possible. In this case, information about the frequency resources where SSFD is possible can be delivered to the UE. Furthermore, information about the time resources where SSFD is possible can be delivered to the UE.

[0216] In the case of a full-duplex UE, UL transmission may be possible simultaneously in some and / or all frequency resources where DL reception of the UE is possible. In this disclosure, a UE performing half-duplex operation may be referred to as an HD UE, and a UE capable of performing (or executing) full-duplex operation may be referred to as an FD UE.

[0217] When a base station performs full-duplex operations such as SBFD and SSFD, it can perform SSFD and / or SBFD operations only for certain time / frequency resources. When an SBFD-aware UE and / or an SSFD-aware UE know the time / frequency resources for the cell to perform SSFD and / or SBFD operations, the UE can perform operations differently based on the resources for the cell to operate in half-duplex (HD), the resources for the cell to operate in SBFD, and the resources for the cell to operate in SSFD. For example, the UE can perform transmission and reception by determining the time / frequency resources for receiving DL signals / channels and / or transmitting UL signals / channels differently based on HD resources, SBFD resources, and SSFD resources.

[0218] The base station can perform half-duplex operation, in which it performs only one of DL transmission or UL reception in all frequency resources constituting the cell in the time resources of HD operation, and can also perform full-duplex operation, in which it performs DL transmission through the first frequency resource (i.e., DL subband resource) within the frequency resources constituting the cell in the time resources of SBFD and SSFD operation, and simultaneously performs UL reception through the second frequency resource (i.e., UL subband resource) within the frequency resources constituting the cell.

[0219] To this end, the base station determines the time resources corresponding to the first time resource (i.e., the HD symbol) and the second time resource (i.e., the FD symbol), and sends configuration information about the first time resource (i.e., the HD symbol) and / or the second time resource (i.e., the FD symbol) to the UE. The FD symbol may include both SBFD symbols and SSFD symbols. More specifically, the base station may determine the time resources corresponding to the HD symbol, SBFD symbol, and / or SSFD symbol, and may send configuration information about the HD symbol, SBFD symbol, and / or SSFD symbol to the UE.

[0220] In this scenario, DL subband resources and / or UL subband resources can be configured differently in time resources operating under SBFD and SSFD. In time resources operating under SBFD, DL and UL subband resources are configured to not overlap. Conversely, in time resources operating under SSFD, DL and UL subband resources can be configured to overlap. DL / UL subband resources can be configured using some frequency resources of the system bandwidth, or they can be configured using all frequency resources.

[0221] The UE receives configuration information from the network regarding HD symbols, SBFD symbols, and / or SSFD symbols, and determines the locations of these symbols. In this case, within the HD symbol, the UE performs DL reception (UL transmission) using all frequency resources configured for the UE. Furthermore, within the SBFD and / or SSFD symbols, the UE performs DL reception (UL transmission) using DL subband resources (UL subband resources), which are the same as or less than the frequency resources used by the UE for DL ​​reception (UL transmission) in the HD symbol. In this case, even when frequency resources that do not correspond to DL subband resources (UL subband resources) are configured for DL ​​reception (UL transmission) in the SBFD and / or SSFD symbol resources, the UE does not perform DL reception (UL transmission) in frequency resources that do not correspond to DL subband resources (UL subband resources).

[0222] A method will now be described in which an apparatus determines time resources (e.g., time slots) for transmitting UCIs (e.g., HARQ-ACK, SR (Schedule Request), CSI (Channel State Information), etc.), and transmits the UCIs within the determined time resources. For convenience, HARQ-ACK will first be described as an example of a UCI.

[0223] First, a method for determining the slot position of the HARQ-ACK information received by the UE for the PDSCH according to existing standard specifications will be described.

[0224] For DL ​​time slot n D At the end of the SPS PDSCH reception, the UE sends HARQ-ACK information for the SPS PDSCH via the PUCCH in UL slot n+k. Here, k is provided by the 'PDSCH-to-HARQ_feedback timing indicator' field in DCI format that activates the SPS PDSCH reception (if it exists).

[0225] If the UE receives activation in DL slot n DIf the SPS PDSCH reception or scheduling PDSCH reception DCI format ends in the middle, and the DCI format does not include the 'PDSCH-to-HARQ_feedbacktiming indicator', then the UE sends / provides HARQ-ACK information in the PUCCH transmission of UL slot n+k, where k is provided by the higher layer parameters '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'.

[0226] If the UE receives a scheduling in DL time slot n D The PDSCH received in DCI format at the end of the middle, or the generation of HARQ-ACK information bits was detected but not received via PDCCH in DL slot n. D If the PDSCH received at the end of the transmission is in DCI format, then the UE will send / provide the corresponding HARQ-ACK information in the PUCCH transmission of UL slot n+k. Here, k is the number of slots and is indicated by the 'PDSCH-to-HARQ_feedback timingindicator' field in the DCI format (if present), or by the higher-layer parameters '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'.

[0227] In this disclosure, during intra-carrier full-duplex operation, the method for determining the time slot resources for UE to transmit UCI is described by considering both the time resources of the cell operating in FD mode and the time resources of the cell operating in HD mode. In other words, the method according to this disclosure, by considering both the time resources of the cell operating in FD mode and the time resources of the cell operating in HD mode, can modify the methods of existing standard specifications.

[0228] For a cell operating in FD mode, depending on time resources, the cell can operate in half-duplex (HD) or full-duplex (FD) mode. With full-duplex (FD) operation on time / frequency resources, the channel environment may be worse than with half-duplex (HD) operation due to cross-link interference (CLI), self-interference (SI), etc. Therefore, when performing UCI transmission via PUCCH or PUSCH on FD resources based on the channel environment of HD resources, UCI transmission may not be appropriate.

[0229] Therefore, this disclosure proposes a method in which, if possible, the UE transmits UCI in a time slot where the cell operates in HD rather than in a time slot where the cell operates in FD.

[0230] Considering that the UE can perform FD operation and whether the UE operates in HD / FD mode can change for each time resource, in this disclosure, 'resources for cell operation in HD mode' and 'resources for cell operation in FD mode' can be interpreted as being replaced by 'resources for UE operation in HD mode' and 'resources for UE operation in FD mode', respectively.

[0231] The following section presents a method for determining UCI transmission time slot resources so that the time slot resources for UE to transmit UCI (uplink control information) become HD resources.

[0232] Method 1. Delayed UCI Transmission

[0233] When the UE determines, according to existing standard specifications, to transmit UCI (e.g., HARQ-ACK, SR (scheduling request), CSI (channel state information) etc.) in time slot m (FD time slot), in this disclosure, the UE can determine the closest HD time slot (referred to as time slot m') among the time slots after time slot m as the time slot for transmitting UCI, and can transmit UCI in the corresponding time slot.

[0234] When time slot m is an HD time slot, the UE transmits UCI in time slot m. When time slot m is an FD time slot, the UE determines the earliest HD time slot after time slot m+1 as the time slot for transmitting UCI. Since this example involves the transmission of UCI by the UE, the HD time slot can be interpreted as a UL time slot.

[0235] Figure 18 A method for sending HARQ-ACK information for a UE is shown.

[0236] exist Figure 18 In this context, DL and UL timeslots represent HD timeslots.

[0237] For example, when a UE receives a PDSCH that ends in slot n, the UE can be configured to send HARQ-ACK information for the corresponding PDSCH in slot n+k. Here, k is the number of slots and can be indicated by the 'PDSCH-to-HARQ_feedback timing indicator' field in DCI format (if present), or 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' for configuring UE-specific PUCCH parameters).

[0238] In this case, when time slot n+k is an FD time slot, the UE can determine the earliest HD time slot existing after time slot n+k (e.g., time slot n+k' as a UL time slot) as the time slot for transmitting UCI, and can transmit UCI in the corresponding time slot.

[0239] In this disclosure, HD slots and FD slots can be more specifically represented as follows.

[0240] An HD time slot can refer to a time slot in which all symbols within the time slot are operated in HD mode. In other words, when all symbols within a time slot are assigned to HD operations, that time slot can be called an HD time slot.

[0241] An FD time slot can refer to i) a time slot in which all symbols within the time slot are FD operated. That is, when all symbols within the time slot are allocated for FD operations, the time slot can be called an HD time slot. Alternatively, an FD time slot can mean ii) a time slot in which at least one symbol within the time slot is a symbol that is an FD operated.

[0242] Alternatively, in this disclosure, an HD time slot may refer to a time slot in which all symbols of a specific DL signal / channel are HD-operated when the UE receives such a signal / channel, and a time slot in which all symbols of a specific UL signal / channel are HD-operated when the UE transmits such a signal / channel.

[0243] FD time slots can refer to time slots in which all symbols of a DL signal / channel received by a UE in a given time slot are FD-operated symbols, and time slots in which all symbols of a UL signal / channel transmitted by a UE in a given time slot are FD-operated symbols.

[0244] Alternatively, an FD time slot may refer to a time slot in which at least one symbol of the symbols of a specific DL signal / channel is received when the UE receives the specific DL signal / channel in the corresponding time slot and is a time slot in which at least one symbol of the symbols of a specific UL signal / channel is transmitted when the UE transmits the specific UL signal / channel in the corresponding time slot and is a time slot in which at least one symbol of the symbols of a specific UL signal / channel is transmitted ...

[0245] In this disclosure, a symbol / time slot operating in HD can refer to a symbol / time slot in which the UE is semi-statically configured by the base station to enable the cell to operate in HD. In this disclosure, a symbol / time slot operating in FD can refer to a symbol / time slot in which the UE is semi-statically configured by the base station to enable the cell to operate in FD. Thereafter, even when the base station dynamically instructs the UE to operate specific symbol / time slot resources in HD or FD, the UE can determine the time slot used for transmitting UCI by considering only the semi-statically instructed information.

[0246] In the following text, downlink (DL) SPS (semi-persistent scheduling) can refer to the periodic reception of downlink data via PDSCH in semi-statically configured DL SPS resources without separate DCI scheduling. The UE can feed back HARQ-ACK information for the periodically received DL SPS in periodically allocated PUCCH resources. However, there may be situations where HARQ-ACK information for DL ​​SPS received in a specific time slot cannot be fed back. For example, suppose that according to DL SPS, the UE is configured to receive downlink data in the PDSCH of time slot n and feed back HARQ-ACK information (which can be called SPS HARQ-ACK) for the downlink data via the PUCCH of time slot n+k (which can be called SPSPUCCH).

[0247] In this scenario, when the time slot used to send SPS HARQ-ACK is a semi-static downlink time slot, the UE can delay the timing of SPS HARQ-ACK transmission until a time slot after the downlink time slot can be used for UL transmission, and this operation can be referred to as SPS HARQ-ACK delay (or SPS PUCCH delay).

[0248] In this scenario, according to the method of this disclosure, when the time slot for transmitting SPS HARQ-ACK is determined / configured as a DL time slot or FD time slot according to conventional standard specifications, the UE can determine the earliest subsequent UL-transmittable HD time slot as the time slot for transmitting UCI. That is, when the time slot configured for transmitting SPS HARQ-ACK is a time slot semi-statically determined as a DL time slot and / or an FD time slot, the UE can determine the earliest subsequent time slot capable of transmitting UL and also an HD time slot as the time slot for transmitting HARQ-ACK. In this case, when all symbols of the PUCCH including HARQ-ACK information transmitted within the time slot are symbols semi-statically determined as UL symbols or symbols semi-statically determined as flexible symbols that do not transmit SS / PBCH blocks, the corresponding time slot can be determined as an HD time slot capable of transmitting UL.

[0249] When the time slot used to send SPS HARQ-ACK is delayed, the UE can be configured by the base station through higher-layer parameters to have the maximum delay value (maximum number of delayed time slots) to be applied.

[0250] In this scenario, the UE can count the delay slots by considering only the HD slot. That is, when the maximum delay value configured for the UE is D... max When the UE determines that the SPS HARQ-ACK transmission slot can be delayed by a maximum of D... max One HD time slot.

[0251] Figure 19 An example of a delayed UCI transmission method is shown.

[0252] refer to Figure 19 The UE receives downlink data through the PDSCH (DL SPS PDSCH) of downlink time slots 191 and 192 according to DL SPS.

[0253] Suppose that the HARQ-ACK information for downlink data of DL SPS PDSCH received in time slot n is semi-statically configured to be transmitted via the PUCCH resource of time slot n+2. That is, assume that the HARQ-ACK information for downlink data of DL SPSPDSCH received in time slot 191 is configured to be transmitted in time slot 193, and the HARQ-ACK information for downlink data of DL SPS PDSCH received in time slot 192 is configured to be transmitted in time slot 194.

[0254] However, time slot 193 can be a DL time slot, while time slot 194 can be an FD time slot. In this case, the UE can send back HARQ-ACK information for the downlink data of the DL SPSP DSCH received in time slot 191 in time slot 196, which is the earliest UL-transmittable HD time slot after DL time slot 193.

[0255] In addition, the UE can send back HARQ-ACK information for the downlink data of the DL SPS PDSCH received in slot 192 in slot 196. Slot 196 is the earliest UL-transmittable HD slot after FD slot 194.

[0256] That is, the SPS HARQ-ACK message is sent with a delay from the original configuration point in time. In this case, the maximum possible delay can be configured from the network to the UE (which can be determined by D). max (This means that) an infinite delay in SPS HARQ-ACK information is not allowed.

[0257] If the maximum delay limit is exceeded, the UE may choose not to send the SPS HARQ-ACK message, or it may send the SPS HARQ-ACK message in another time slot (e.g., time slot 194). More specific operations will be described later (see When the gap between time slot m and time slot m' is greater than G). max (Applicable Alt a to Alt d). Furthermore, when counting the maximum delay, only the HD time slot can be considered. In the example above, when the maximum delay is given as 2, time slot 194, as the FD time slot, is not counted.

[0258] As another example, in the case of aperiodic CSI reporting, the UE multiplexes the aperiodic CSI information in the PUSCH scheduled for the first time slot for sending the PUSCH by instructing / requesting the aperiodic CSI reporting DCI, and then sends it.

[0259] In the case of PUSCH repetition type A, when DCI format 0_1 ​​and DCI format 0_2 indicate code point "10" or "11" for 'SRS resource set indication' and non-periodic CSI reports in a PUSCH with transport blocks are scheduled via the 'CSI request' field of the DCI, CSI report multiplexing is determined as follows.

[0260] If the high-level parameter 'AP-CSI-MultiplexingMode' in 'CSI-AssociatedReportConfigInfo' is enabled, and UCI other than CSI reports are not multiplexed in the PUSCH, then CSI reports are sent separately only in the first transmission timing associated with the first SRS resource set and the first transmission timing associated with the second SRS resource set. Otherwise, CSI reports are sent only in the first transmission timing.

[0261] In the case of TBoMS PUSCH transmission, when DCI format 0_1 ​​and DCI format 0_2 schedule a non-periodic CSI report in a PUSCH with a transport block via the 'CSI Request' field of DCI, the CSI report is sent only in the first of the N·K time slots determined for the PUSCH transmission.

[0262] In the case of 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 non-periodic CSI reports in a PUSCH with transport blocks are scheduled via the 'CSI request' field of the DCI, CSI report multiplexing is determined as follows.

[0263] If the high-level parameter 'AP-CSI-MultiplexingMode' in 'CSI-AssociatedReportConfigInfo' is enabled, the number of symbols for the first actual duplicate associated with the first SRS resource set is the same as the number of symbols for the first actual duplicate associated with the second SRS resource set, and UCIs other than CSI reports are not reused in PUSCH, then CSI reports are reused separately only for the first actual duplicate associated with the first SRS resource set and the first actual duplicate associated with the second SRS resource set. Otherwise, CSI reports are reused only in the first actual duplicate.

[0264] When the time slot configured to transmit aperiodic CSI information is time slot m, time slot m can be an FD time slot. In this case, the UE can apply the method described above and determine the earliest HD time slot after time slot m as the time slot for transmitting UCI.

[0265] In addition, in the absence of aperiodic CSI reports transmitted via PUSCH, the UE can report aperiodic CSI information via the time slot resources indicated by the TDRA field of the DCI that indicates aperiodic CSI reporting.

[0266] When a UE is scheduled to send a PUSCH without a transport block and with a CSI report via the DCI's 'CSI Request' field, the value m of the DCI's 'Time Domain Resource Allocation' field provides the row index m+1 of the resource allocation table. The indexed row can define a start and length indicator (SLIV), or it can directly define the start symbol S and the allocation length L. The PUSCH mapping type and K2 value to be applied to the PUSCH transmission can be determined as shown in the following equation.

[0267] [Equation 1]

[0268] Here, Y j j=0…,N Rep-1 These are the corresponding list entries for higher-level parameters. In the context of N... Rep In the CSI-ReportConfig configuration of the triggered CSI report, the high-level parameters can be i) 'reportSlotOffsetListDCI-0-2' or 'reportSlotOffsetListDCI-0-2-r17' if PUSCH is scheduled via DCI format 0_2 (the DCI format used to schedule PUSCH in a cell) and configured with 'reportSlotOffsetListDCI-0-2' or 'reportSlotOffsetListDCI-0-2-r17', ii) 'reportSlotOffsetListDCI-0-1' or 'reportSlotOffsetListDCI-0-1-r17' if PUSCH is scheduled via DCI format 0_1 ​​(the DCI format used to schedule one or more PUSCH in a cell) and configured with 'reportSlotOffsetListDCI-0-1' or 'reportSlotOffsetListDCI-0-1-r17', or iii) otherwise 'reportSlotOffsetList' or 'reportSlotOffsetList-r17'.

[0269] Y j (m+1) is Y j The (m+1)th entry.

[0270] UE transmits PUSCH in slot K s The following equation can be used to determine this based on K2.

[0271] [Equation 2]

[0272] If 'ca-SlotOffset' is configured for at least one of the scheduled cell and the scheduling cell, K can be determined according to the following equation. s .

[0273] [Equation 3]

[0274] Here, K offset These are parameters configured by higher levels, and It is for K offset The subcarrier spacing configuration, where the value 0 is used for frequency range 1, n is the time slot with scheduled DCI, K2 is the parameter set based on PUSCH, and μ PUSCH and μ PDCCH These are the subcarrier spacing configurations for PUSCH and PDCCH, respectively. The scheduling DCI is a DCI format other than the DCI format 0_0, which uses CRC scrambling via TC-RNTI.

[0275] 'N CA slot,offset,PDCCH ' and 'μ offset,PDCCH 'These are N' CA slot,offset and μ offset These can be determined by the 'ca-SlotOffset' configured by the higher layers of the cell used to receive the PDCCH. CA slot,offset,PUSCH 'and''μ offset,PUSCH 'These are N' CA slot,offset and μ offset These can be determined by the 'ca-SlotOffset' configured by the higher layer of the cell used to send PUSCH.

[0276] For the first PUSCH scheduled via DCI format 0_1, if 'pusch-RepTypeIndicatorDCI-0-1' is configured as 'pusch-RepTypeB', the UE applies the first PUSCH repetition type B procedure when determining time-domain resource allocation. For the PUSCH scheduled via DCI format 0_2, if 'pusch-RepTypeIndicatorDCI-0-2' is configured as 'pusch-RepTypeB', the UE applies the PUSCH repetition type B procedure when determining time-domain resource allocation. Otherwise, when determining time-domain resource allocation for a PUSCH scheduled via PDCCH, RAR UL license, or fallback RAR UL license, the UE applies the PUSCH repetition type A procedure.

[0277] For a 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 the time-domain resource assignment.

[0278] For PUSCH repetition type A and TBoMS, the starting symbol S and L based on the start of the time slot can be determined according to the SLIV which is the start and length indicator of the indexed row, where L is the number of consecutive symbols counted from symbol S allocated to the PUSCH.

[0279] For example, if (L - 1) ≤ 7, then . Otherwise, SLIV = 14·(14 - L - 1)+(14 - 1 - S), and 0 < L ≤ 14 - S.

[0280] For PUSCH repetition type B, the starting symbol S and L based on the start of the time slot can be provided respectively by'startSymbol' and 'length' of the indexed row of the resource allocation table, where L is the number of consecutive symbols counted from symbol S allocated to the PUSCH.

[0281] For PUSCH repetition type A and TBoMS, the PUSCH mapping type is configured as type A or type B through the indexed row.

[0282] For PUSCH repetition type B, the PUSCH mapping type is configured as type B.

[0283] When time slot m is a time slot configured to transmit aperiodic CSI information according to such a traditional standard specification, time slot m can be an FD time slot. In this case, the UE may apply the method according to the present disclosure and may determine the earliest HD time slot after time slot m as the time slot for transmitting UCI.

[0284] In addition, when the UE is configured to transmit UCI in time slot m according to the existing standard specification, but determines time slot m' (m < m') which is an HD time slot as the time slot for transmitting UCI because the corresponding time slot is an FD time slot, the gap between time slot m and time slot m' can be restricted to not greater than G max .

[0285] That is, in the present disclosure, the value of m' - m can be restricted to not greater than G max . If the gap between time slot m and time slot m' is greater than G max , then the UE can determine the time slot for transmitting UCI as follows.

[0286] Alt a. The UE determines time slot m + G max as the time slot for transmitting UCI.

[0287] Alt b. The UE will be located in time slot m+G max The previous time slot was designated for UCI transmission. This time slot can be used by the UE for PUCCH or PUSCH transmission, and the closest time slot is m+G. max .

[0288] Alt c. The UE determines time slot m as the time slot used for transmitting UCI.

[0289] Alt d. The UE does not perform the corresponding UCI transmission.

[0290] In this case, G max The value of G can be fixed to a specific value and is defined in a standard specification. Alternatively, G max The value can be a value indicated to the UE by the network via RRC, MAC-CE, and / or DCI signaling.

[0291] For non-periodic CSI reports of PUSCH transmissions indicated by UL authorization along with the PUSCH transmission, the time slot m' can be the same as the last time slot of the PUSCH transmission schedule.

[0292] That is, when the number of time slots transmitting PUSCH (which may also include TBoMS) is N When K, G max The value can be equal to N K-1. In this case, K can represent the number of times the PUSCH is repeated, and the value of N can represent the number of time slots that constitute a TBoMS transmission (N=1 for general PUSCH transmissions other than TBoMS).

[0293] Method 2. A method for determining UCI transmission slots by counting only HD slots.

[0294] Method 2 could be a method that counts only the HD slots when counting the number of slots used to transmit UCI after a specific slot number.

[0295] As a specific example, when the UE receives a PDSCH that ends in slot n, the UE can be configured to send HARQ-ACK information for the PDSCH in slot n+k. In this case, k is the number of slots and can be indicated by the 'PDSCH-to-HARQ_feedback timing indicator' field in DCI format (if present), or 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' for configuring UE-specific PUCCH parameters).

[0296] According to this disclosure, when the UE receives a PDSCH that ends in time slot n, the UE determines the k-th HD time slot after time slot n as the time slot for transmitting UCI, and transmits UCI in the corresponding time slot. That is, when the position of the k-th HD time slot after time slot n is time slot n+k' (k<=k'), the UE determines time slot n+k' as the time slot for transmitting UCI, and transmits UCI.

[0297] In the following text, HD slots and FD slots can be referred to more specifically as follows.

[0298] HD slots can refer to slots where all symbols within the slot are operated in HD.

[0299] An FD time slot can refer to a time slot in which all symbols within the time slot are operated on using FD. Alternatively, an FD time slot can refer to a time slot in which at least one symbol within the time slot is operated on using FD.

[0300] Alternatively, an HD time slot may refer to a time slot in which all symbols of the DL signal / channel are transmitted as HD-operated symbols when the UE receives a specific DL signal / channel in the corresponding time slot, and a time slot in which all symbols of the UL signal / channel are transmitted as HD-operated symbols when the UE receives a specific UL signal / channel in the corresponding time slot.

[0301] The FD time slot may refer to: when the UE receives a specific DL signal / channel in the corresponding time slot, all symbols of the corresponding DL signal / channel being transmitted are symbols operating in FD, and when the UE receives a specific UL signal / channel in the corresponding time slot, all symbols of the corresponding UL signal / channel being transmitted are symbols operating in FD.

[0302] Alternatively, the FD time slot may refer to: when the UE receives a specific DL signal / channel in the corresponding time slot, at least one of the symbols of the corresponding DL signal / channel being transmitted is a symbol operating in FD, and when the UE receives a specific UL signal / channel in the corresponding time slot, at least one of the symbols of the corresponding UL signal / channel being transmitted is a symbol operating in FD.

[0303] Alternatively, the symbol / slot operating in HD may refer to the symbol / slot in which the UE is semi-statically configured by the base station such that the cell operates in HD. In the present disclosure, the symbol / slot operating in FD may refer to the symbol / slot in which the UE is semi-statically configured by the base station such that the cell operates in FD. Thereafter, even when the UE is dynamically instructed by the base station to operate on a specific symbol / slot resource in HD or FD, the UE may determine the time slot for transmitting UCI only by considering the semi-statically indicated information.

[0304] In addition, according to traditional standard specifications, the UE should transmit UCI in time slot m, but since the corresponding time slot is an FD time slot, when the UE determines time slot m' (m < m') which is an HD time slot as the time slot for transmitting UCI according to the method of the present disclosure, the gap between time slot m and time slot m' can be limited to not greater than G max .

[0305] That is, the present disclosure proposes that the value of m' - m is not greater than G max . If the gap between time slot m and time slot m' is greater than G max , then the UE may determine the time slot for transmitting UCI as follows.

[0306] Alt a. The UE determines time slot m + G max as the time slot for transmitting UCI.

[0307] Alt b. The UE determines the time slot that is before time slot m + G max , can be used by the UE for PUCCH or PUSCH transmission, and is closest to time slot m + G max as the time slot for transmitting UCI.

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

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

[0310] Alternatively, when the UE receives a PDSCH that ends in time slot n and determines to send HARQ-ACK information for the corresponding PDSCH in time slot n+k', the gap between time slot n and time slot n+k' (i.e., the value of k') can be limited to no more than G. max That is, this disclosure proposes that the value of k' is no greater than G. max If the gap in the value of k' is greater than G max Then the UE can determine the time slot used to transmit UCI as follows.

[0311] Alt a. UE will use time slot n+G max The time slot has been determined for transmitting UCI.

[0312] Alt b. The UE will be located in time slot n+G max The previous one, which can be used by the UE for PUCCH or PUSCH transmission, and is closest to slot n+G max The time slot is determined to be used for transmitting UCI.

[0313] Alt c. The UE determines time slot n+k as the time slot used for transmitting UCI.

[0314] Alt d. The UE does not perform the corresponding UCI transmission.

[0315] G max The value of G can be fixed to a specific value and is defined in a standard specification. Alternatively, G max The value can be a value indicated to the UE by the network via RRC, MAC-CE, and / or DCI signaling.

[0316] This method can be applied only to the transmission of HARQ-ACK information.

[0317] The proposed methods, including methods 1 and 2 above, can be applied when all or some of the following conditions are met.

[0318] i) The UE can only apply the above proposal when the network indicates whether to apply the corresponding operation through RRC, MAC-CE, DCI signaling, etc.

[0319] ii) The UE may apply the proposed method differently depending on the UCI information it transmits.

[0320] For example, in the case of HARQ-ACK and / or SR information, the UE can transmit according to existing methods and apply the above proposal, and only transmit in the case of other information. This is because, in the case of HARQ-ACK information, low latency may be relatively important.

[0321] Alternatively, for example, G applied to the method max The value can be configured / applied differently depending on the type of UCI sent. This is because the required latency may vary depending on the UCI information.

[0322] Alternatively, for example, in the case of HARQ-ACK information, the UE may apply method 2, while in the case of remaining information, the UE may apply method 1 and transmit.

[0323] iii) The UE may apply the method according to this disclosure only when transmitting UCI by multiplexing UCI via PUSCH. That is, the UE may apply the method according to this disclosure only when it applies existing standard specifications and transmits UCI by multiplexing UCI in PUSCH.

[0324] The base station requests UCI information such as HARQ-ACK, CSI, and SR from the UE and receives such UCI information via PUCCH or PUSCH. To enable the base station to receive as many UCIs as possible in HD time slots, the base station can determine the time slot resources for receiving UCIs by applying the methods described above.

[0325] To this end, the base station determines / configures resources for the cell to operate in FD mode and resources for the cell to operate in HD mode, and signals the UE with information about the location and / or quantity of the corresponding resources.

[0326] Subsequently, the base station requests the transmission of UCI from the UE.

[0327] Subsequently, the base station determines the time slot resources for receiving UCI based on the time slots of the cell operating in FD mode and the time slots of the cell operating in HD mode.

[0328] In the relevant resources, the base station receives UCI and obtains information such as HARQ-ACK, CSI, and SR.

[0329] Figure 20 The operation of the UE according to this disclosure is shown.

[0330] Reference Figure 20 The UE receives downlink data from the network in the first time slot (S201). For example, the UE can receive downlink data (transport block) through the PDSCH of the first time slot.

[0331] The UE determines a second time slot (S202) for sending HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgment) information for downlink data to the network.

[0332] For example, in SPS PDSCH reception, in slot n which is a downlink time slot D In the case of the end of the process, the UE can determine that it will send HARQ-ACK information for the SPS PDSCH via the PUCCH in slot n+k, which is the uplink slot (or is configured to send such information). In this case, k is provided by the 'PDSCH-to-HARQ_feedback timing indicator' field in DCI format that activates the SPS PDSCH reception (if it exists).

[0333] If the UE receives and activates in slot n, which is a downlink time slot... D If the SPS PDSCH reception or the DCI format of the scheduled PDSCH reception ends in the middle, and this DCI format does not include the 'PDSCH-to-HARQ_feedback timing indicator', then the UE can determine that the UE will send HARQ-ACK information (or be configured to send such information) in the PUCCH transmission of uplink slot n+k. In this case, k is provided by the higher layer parameters 'd1-DataToUL-ACK', 'd1-DataToUL-ACK-r16', 'd1-DataToUL-ACK-DCI-1-2', 'd1-DataToUL-ACK-r17', 'd1-DataToUL-ACK-DCI-1-2-r17', or 'd1-DataToUL-ACK-v1700'.

[0334] If the UE receives a scheduling in slot n, which is a downlink time slot D The DCI format received at the end of the PDSCH, or the DCI format that generates HARQ-ACK information bits, but does not pass through downlink slot n DIf the PDCCH reception at the end of the PDCCH is used to schedule PDSCH reception, then the UE determines that it will send (or be configured to send) the corresponding HARQ-ACK information 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 in DCI format (if present), or by the higher-layer parameters 'd1-DataToUL-ACK', 'd1-DataToUL-ACK-r16', 'd1-DataToUL-ACK-DCI-1-2', 'd1-DataToUL-ACK-r17', 'd1-DataToUL-ACK-DCI-1-2-r17', or 'd1-DataToUL-ACK-v1700'.

[0335] As an example, at least one value can be provided by higher-level parameters (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 values ​​can be indicated based on the value of the 'PDSCH-to-HARQ_feedback timing indicator' field in DCI format. For example, when the 'PDSCH-to-HARQ_feedback timing indicator' field is 1 bit, if the value of the 1 bit is 0, it can indicate the first value among the values ​​provided by the higher-level parameters, and if the value of the 1 bit is 1, it can indicate the second value among the values ​​provided by the higher-level parameters. As another example, when the 'PDSCH-to-HARQ_feedback timing indicator' field is 2 bits, if the 2-bit value is '00', '01', '10', or '11', it can indicate the first, second, third, or fourth value provided by the higher-level parameters, respectively. As yet another example, when the 'PDSCH-to-HARQ_feedback timing indicator' field is 3 bits, if the 3-bit value is '000', '001', '010', '011', '100', '101', '110', or '111', it can indicate the first, second, third, fourth, fifth, sixth, seventh, or eighth value provided by the higher-level parameters, respectively.

[0336] When the second time slot is an FD time slot composed of FD (full-duplex) resources, the UE sends HARQ-ACK information in the third time slot, which is an HD (half-duplex) time slot located after the FD time slot (S203).

[0337] HD timeslots can be one of downlink (DL) timeslots, flexible timeslots, or uplink (UL) timeslots, and the third timeslot can be an uplink (UL) timeslot.

[0338] Here, a DL time slot can be a time slot in which all symbols within the time slot are composed of DL symbols. However, when the UE wants to perform a specific operation in the corresponding time slot (e.g., receiving a DL signal or transmitting a UL signal), the DL time slot can refer to a time slot in which all symbols for performing the specific operation are composed of DL symbols.

[0339] A UL time slot can be a time slot in which all symbols are composed of UL symbols. However, when a UE wants to perform a specific operation in a corresponding time slot (e.g., transmitting a UL signal or receiving a DL signal), a UL time slot can refer to a time slot in which all symbols used to perform the specific operation are composed of UL symbols.

[0340] A flexible time slot can be a time slot in which all symbols within the time slot are composed of flexible symbols. However, when the UE wants to perform a specific operation in the corresponding time slot (e.g., transmitting a UL signal or receiving a DL signal), a flexible time slot can refer to a time slot in which all symbols (or at least one symbol) used to perform the specific operation are composed of flexible symbols.

[0341] If the second time slot is an HD time slot, then when the HD time slot is a downlink (DL) time slot, the UE can send HARQ-ACK information in the third time slot, and when the HD time slot is an uplink time slot, the UE can send HARQ-ACK information in the second time slot.

[0342] For convenience, when the first time slot is time slot n and the second time slot is time slot n+k, the value of k can be notified by a specific field of the downlink control information (DCI) of the physical downlink shared channel (PDSCH) that is scheduled to end in time slot n (e.g., the 'PDSCH-to-HARQ_feedback timingindicator' field mentioned above).

[0343] Alternatively, when the first time slot is time slot n and the second time slot is time slot n+k, the value of k can be provided by higher-layer parameters (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 approach can be applied when the DCI of the PDSCH scheduled to end reception in time slot n does not have a specific field.

[0344] Alternatively, when the first time slot is time slot n and the second time slot is time slot n+k, the value of k can be the value indicated by a specific field of DCI (the 'PDSCH-to-HARQ_feedback timing indicator' field) among multiple values ​​provided by higher-level parameters (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').

[0345] According to the implementation method, the UE may also receive information about the maximum value of the gap between the second and third time slots.

[0346] In this case, the maximum value of the gap can be related to the number of HD time slots following the second time slot. For example, it can be determined whether the maximum value has been exceeded by counting only the HD time slots following the second time slot and not counting the FD time slots following the second time slot.

[0347] According to the implementation method, the UE can also receive information about the maximum value of the gap between the first time slot and the third time slot.

[0348] According to the implementation method, the UE determines a fourth time slot for transmitting uplink control information (UCI), and when the fourth time slot is an FD time slot consisting of FD (full-duplex) resources, the UE can transmit UCI in a fifth time slot consisting of HD (half-duplex) resources and located after the FD time slot in the HD time slot.

[0349] Depending on the type of UCI, the maximum value of the gap between the fourth and fifth time slots can be applied differently.

[0350] Figure 20 The method can be an example of applying method 1 and / or method 2 described above.

[0351] according to Figure 20 This method, in wireless communication systems including UEs supporting both FD and HD operations, can prevent the transmission of UCIs via FD resources where the channel state may be worse than the channel state targeted by the base station. Therefore, UCIs can be reliably transmitted even in wireless communication systems supporting FD operations.

[0352] Furthermore, when different types of resources (FD resources and HD resources) coexist, it is possible to clearly define which resource to use to send the UCI, thereby preventing ambiguity between the sending and receiving entities.

[0353] Figure 21 The signaling process and operation method between the base station and the UE are shown.

[0354] Reference Figure 21 The base station sends a higher-layer message (S211) to the UE to configure HD resources / FD resources. The higher-layer message for configuring HD resources / FD resources can be included together in one information element, or the higher-layer message for configuring HD resources and the higher-layer message for configuring FD resources can be included separately in separate information elements.

[0355] According to the implementation method, HD resources can be configured cell-specifically, and FD resources can be configured UE-specifically. Alternatively, both HD resources and FD resources can be configured cell-specifically. HD resources and FD resources can be configured semi-persistently (semi-statically). Alternatively, HD resources can be configured semi-statically, and FD resources can be configured dynamically.

[0356] The base station provides the UE with information regarding the timing of HARQ-ACK transmission (S212). For example, the base station may provide information about the time slot for sending HARQ-ACK information through a specific field of the DCI that schedules the PDSCH (e.g., the 'PDSCH-to-HARQ_feedback timing indicator' field mentioned above). And / or the base station may provide information related to the timing between PDSCH reception and HARQ-ACK information transmission through higher-layer messages (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').

[0357] The base station sends downlink data to the UE (S213). The base station can send downlink data via PDSCH (or SPS PDSCH).

[0358] The UE considers FD time slots to determine the time slot for transmitting HARQ-ACK information (S214). According to existing standard specifications, the UE can first determine the time slot n + k for transmitting HARQ-ACK information for the PDSCH reception that ends in time slot n. Thereafter, considering whether time slot n + k is an FD time slot, the UE determines the time slot for actually transmitting the HARQ-ACK information. For example, when time slot n + k is an FD time slot composed of FD resources, the UE transmits the HARQ-ACK information in time slot n + k' (where k < k'), and the time slot n + k' is an HD time slot (more specifically, a UL time slot) composed of HD resources and located after the FD time slot.

[0359] In Figure 20 and Figure 21 it has been described the downlink data reception through PDSCH and the transmission of HARQ-ACK information for the downlink data, but this can be extended to UCI transmission. For example, assume that the UCI is an aperiodic CSI (aperiodic channel state information). A specific field of the DCI indicating the report of the aperiodic CSI (aperiodic CSI report) can indicate the resources for performing the aperiodic CSI report. In this case, when the resources for performing the aperiodic CSI report are determined to be an FD time slot, the UE performs the aperiodic CSI report in the earliest HD time slot (more specifically, a UL time slot) after the FD time slot.

[0360] Furthermore, when the UE is supposed to transmit UCI in time slot m according to existing standard specifications, since time slot m is an FD time slot, when the UE transmits UCI in time slot m' (m < m') which is an HD time slot according to the method of the present disclosure, the gap between time slot m and time slot m' can be restricted to not be greater than the maximum value (G max ). The maximum value can be configured from the network to the UE, or the maximum value can be predetermined in the standard specifications according to the type of UCI.

[0361] Figure 22 shows a wireless device applicable to this specification.

[0362] Referring to Figure 22 the first wireless device 100 and the second wireless device 200 can transmit and receive radio signals through various RATs (e.g., LTE and NR).

[0363] The first wireless device 100 may include at least one processor 102 and at least one memory 104, and additionally may include at least one transceiver 106 and / or at least one antenna 108. The at least one processor 102 (hereinafter simply referred to as the processor) may control at least one memory 104 (hereinafter simply referred to as the memory) and / or at least one transceiver 106 (hereinafter simply referred to as the transceiver), and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document. For example, the processor 102 may process information in the memory 104 to generate a first information / signal, and then transmit a radio signal including the first information / signal via the transceiver 106. Additionally, the processor 102 may receive a radio signal including a second information / signal via 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 pieces of information related to the operation of the processor 102. For example, memory 104 may store software code, including instructions for performing some or all of the processing controlled by processor 102 or for performing the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. Here, processor 102 and memory 104 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). Transceiver 106 may be connected to processor 102 and may transmit and / or receive radio signals via one or more antennas 108. Transceiver 106 may include a transmitter and / or a receiver. Transceiver 106 may be used interchangeably with a radio frequency (RF) unit. In this specification, a wireless device may refer to a communication modem / circuit / chip.

[0364] The processor (102) receives downlink data from the network in a first time slot and determines a second time slot for sending HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgment) information for the downlink data to the network. When the second time slot is an FD (full-duplex) time slot composed of FD resources, the UE sends the HARQ-ACK information in a third time slot, which is an HD (half-duplex) time slot following the FD time slot. (See also...) Figures 18 to 21 The specific operations are described.

[0365] The second wireless device 200 may include at least one processor 202 and at least one memory 204, and may also include at least one transceiver 206 and / or at least one antenna 208. The processor 202 may control the memory 204 and / or the transceiver 206, and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document. For example, the processor 202 may process information in the memory 204 to generate a third information / signal, and then transmit a radio signal including the third information / signal via the transceiver 206. Additionally, the processor 202 may receive a radio signal including a fourth information / signal via the transceiver 206, and may store information obtained by processing 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 store software code including instructions for performing some or all of the processing controlled by the processor 202 or for performing the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document. Here, processor 202 and memory 204 may be part of a communication modem / circuit / chip designed to implement RAT (e.g., LTE or NR). Transceiver 206 may be connected to processor 202 and may transmit and / or receive radio signals via one or more antennas 208. Transceiver 206 may include a transmitter and / or a receiver. Transceiver 206 may be used interchangeably with an RF unit. In this specification, wireless device may refer to a communication modem / circuit / chip.

[0366] The processor (202) sends downlink data to the UE in a first time slot and determines a second time slot from which to receive HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgment) information for the downlink data from the UE. When the second time slot is an FD (full-duplex) time slot composed of FD resources, the base station receives the HARQ-ACK information in a third time slot, which is an HD (half-duplex) time slot composed of HD resources and located after the FD time slot. (See also...) Figures 18 to 21 The specific operations are described.

[0367] The hardware components of wireless devices 100 and 200 will be described in more detail below. One or more protocol layers may be implemented by, but are not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) in accordance with the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information in accordance with the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors 102 and 202 may generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data, or information, according to the functions, processes, proposals, and / or methods disclosed in this document, and may provide the generated signals to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive signals (e.g., baseband signals) from one or more transceivers 106 and 206, and may acquire PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document.

[0368] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 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 one or more processors 102 and 202. One or more processors 102 and 202 may be implemented using at least one computer-readable medium (CRM) including instructions to be executed by at least one processor.

[0369] That is, at least one computer-readable medium (CRM), the at least one CRM including instructions to perform the following operations based on execution by at least one processor: receiving downlink data from the network in a first time slot, and determining a second time slot for sending HARQ-ACK information for the downlink data to the network. When the second time slot is an FD time slot consisting of FD resources, the UE sends HARQ-ACK information in a third time slot, the third time slot consisting of HD resources and located after the FD time slot. (Already referred to...) Figures 18 to 21 The specific operations are described.

[0370] The descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document may be implemented using firmware or software, and such firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document may be included in one or more processors 102 and 202, or stored in one or more memories 104 and 204, so as to be driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of code, commands, and / or command sets.

[0371] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and may store various types of data, signals, messages, information, programs, codes, instructions, and / or commands. One or more memories 104 and 204 may be configured as read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard disk drive, registers, cache, computer-readable storage media, and / or combinations thereof. At least one memory 104 and 204 may be located internally and / or externally to one or more processors 102 and 202. Furthermore, one or more memories 104 and 204 may be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0372] One or more transceivers 106 and 206 can transmit user data, control information, and / or radio signals / channels as disclosed in the methods and / or operation flowcharts disclosed in this document to one or more other devices. One or more transceivers 106 and 206 can receive user data, control information, and / or radio signals / channels as disclosed in the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 can be connected to one or more processors 102 and 202 and can transmit and receive radio signals. For example, one or more processors 102 and 202 can perform control to enable one or more transceivers 106 and 206 to transmit user data, control information, or radio signals to one or more other devices. Additionally, one or more processors 102 and 202 can perform control to enable one or more transceivers 106 and 206 to receive user data, control information, or radio signals from one or more other devices. Additionally, one or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to transmit or receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document through one or more antennas 108 and 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 and 206 may convert received radio signals / channels, etc., from RF band signals to baseband signals for processing by one or more processors 102 and 202. One or more transceivers 106 and 206 may convert user data, control information, radio signals / channels, etc., processed using one or more processors 102 and 202 from baseband signals to RF band signals. For this purpose, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0373] Figure 23 An example of the structure of a signal processing module is shown. Here, signal processing can be performed... Figure 22 It is executed in processors 102 and 202.

[0374] Reference Figure 23 The transmitting device (e.g., processor, processor and memory, or processor and transceiver) in the UE or BS 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.

[0375] The transmitting device can transmit one or more codewords. The encoded bits in each codeword are scrambled by a corresponding scrambler 301 and transmitted over the physical channel. The codeword can be referred to as a data string and can be equivalent to a transport block provided as a data block by the MAC layer.

[0376] The corresponding modulator 302 can modulate the scrambled bits into complex-valued modulation symbols. Modulator 302 can modulate the scrambled bits according to a modulation scheme to arrange complex-valued modulation symbols representing their positions on the signal constellation diagram. The modulation scheme is unrestricted, and m-PSK (m-phase shift keying) or m-QAM (m-quadrature amplitude modulation) can be used to modulate the coded data. The modulator can be referred to as a modulation mapper.

[0377] Complex-valued modulation symbols can be mapped to one or more transmission layers by layer mapper 303. Complex-valued modulation symbols on each layer can be mapped by antenna port mapper 304 for transmission at antenna ports.

[0378] Each resource block mapper 305 can map the complex-valued modulation symbols for each antenna port to appropriate resource elements in the virtual resource blocks allocated for transmission. The resource block mapper can map virtual resource blocks to physical resource blocks according to an appropriate mapping scheme. The resource block mapper 305 can allocate the complex-valued modulation symbols for each antenna port to appropriate subcarriers and multiplex the complex-valued modulation symbols according to the user.

[0379] Signal generator 306 can modulate complex-valued modulation symbols, i.e., antenna-specific symbols, for each antenna port according to a specific modulation scheme (e.g., OFDM (Orthogonal Frequency Division Multiplexing)) to generate complex-valued time-domain OFDM symbol signals. The signal generator can perform an IFFT (Inverse Fast Fourier Transform) on the antenna-specific symbols and can insert a CP (Cyclic Prefix) into the IFFT-operated time-domain symbols. The OFDM symbols undergo digital-to-analog conversion and up-conversion before being transmitted to the receiving device through each transmit antenna. The signal generator may include an IFFT module, a CP insertion unit, a digital-to-analog converter (DAC), and an up-converter.

[0380] Figure 24 Another example illustrating the structure of a signal processing module in a transmitting device is given. Here, signal processing can be performed in the processor of the UE / BS, for example... Figure 22 Processors 102 and 202.

[0381] Reference Figure 24 The transmitting device (e.g., processor, processor and memory, or processor and transceiver) in the UE or BS 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.

[0382] The transmitting device can scramble the encoded bits in the codeword using the corresponding scrambler 401, and then transmit the scrambled encoded bits through the physical channel.

[0383] The scrambled bits are modulated into complex-valued modulation symbols by the corresponding modulator 402. The modulator can modulate the scrambled bits according to a predetermined modulation scheme to arrange complex-valued modulation symbols representing the positions on the signal constellation diagram. The modulation scheme is unrestricted and can use π / 2-BPSK (π / 2-binary phase shift keying), m-PSK (m-phase shift keying), or m-QAM (m-quadrature amplitude modulation) to modulate the coded data.

[0384] Complex-valued modulation symbols can be mapped to one or more transport layers by layer mapper 403.

[0385] Complex-valued modulation symbols on each layer can be pre-coded by pre-encoder 404 for transmission at antenna ports. Here, the pre-encoder can perform transform precoding on the complex-valued modulation symbols, followed by precoding. Alternatively, the pre-encoder can perform precoding without transform precoding. Pre-encoder 404 can process the complex-valued modulation symbols according to MIMO using multiple transmit antennas to output antenna-specific symbols and assign these symbols to the corresponding resource block mapper 405. The output z of pre-encoder 404 can be obtained by multiplying the output y of layer mapper 403 by an N×M precoding matrix W. Here, N is the number of antenna ports, and M is the number of layers.

[0386] Each resource block mapper 405 maps the complex-valued modulation symbol for each antenna port to the appropriate resource element in the virtual resource block allocated for transmission.

[0387] Resource block mapper 405 can assign complex-valued modulation symbols to appropriate subcarriers and multiplex complex-valued modulation symbols according to users.

[0388] Signal generator 406 can modulate complex-valued modulation symbols according to a specific modulation scheme (e.g., OFDM) to generate complex-valued time-domain OFDM symbol signals. Signal generator 406 can perform IFFT (Inverse Fast Fourier Transform) on antenna-specific symbols and can insert CP (Cyclic Prefix) into the time-domain symbols that have undergone IFFT. The OFDM symbols are then converted from digital to analog and up-converted before being transmitted to the receiving device through each transmit antenna. Signal generator 406 may include an IFFT module, a CP insertion unit, a digital-to-analog converter (DAC), and an up-converter.

[0389] The signal processing of the receiving device can be the reverse process of the signal processing of the transmitting device. Specifically, the processor of the transmitting device decodes and demodulates the RF signal received through the antenna port of the transceiver. The receiving device may include multiple receiving antennas, and the signals received through the receiving antennas are recovered into baseband signals, and then multiplexed and demodulated according to MIMO to recover the data string intended to be transmitted by the transmitting device. The receiving device may include: a signal recovery unit that recovers the received signal into a baseband signal; a multiplexer for combining and multiplexing the received signals; and a channel demodulator for demodulating the multiplexed signal string into corresponding codewords. The signal recovery unit, multiplexer, and channel demodulator may be configured as integrated modules or independent modules for performing their functions. More specifically, the signal recovery unit may include: an analog-to-digital converter (ADC) for converting an analog signal into a digital signal; a CP removal unit for removing CP from the digital signal; a FET module for applying an FFT (Fast Fourier Transform) to the CP-removed signal to output a frequency domain signal; and a resource element demapping / equalizer for recovering the frequency domain symbols into antenna-specific symbols. The antenna-specific symbols are then recovered into the transport layer by a multiplexer, and the transport layer is recovered into codewords intended to be transmitted by a transmitting device by a channel demodulator.

[0390] Figure 25 An example of a wireless communication device according to an implementation example of this disclosure is illustrated.

[0391] Reference Figure 25 A wireless communication device, such as a UE, may include at least one of a processor 2310 (e.g., a digital signal processor (DSP) or microprocessor), a transceiver 2335, a power management module 2305, an antenna 2340, a battery 2355, a display 2315, a keyboard 2320, a global positioning system (GPS) chip 2360, a sensor 2365, a memory 2330, a user identification module (SIM) card 2325, a speaker 2345, and a microphone 2350. Multiple antennas and multiple processors may be provided.

[0392] The processor 2310 can implement the functions, processes and methods described in this specification. Figure 25 The processor 2310 in Figure 23 The memory 2330 in the memory can be Figure 22 Processors 102 and 202 in the middle.

[0393] The memory 2330 is connected to the processor 2310 and stores information related to processor operation. The memory can be located inside or outside the processor and can be connected to the processor via various technologies such as wired or wireless connections. Figure 25 The memory 2330 in the memory can be Figure 22 The memory in the memory is 104 and 204.

[0394] Users can use various technologies, such as pressing buttons on keypad 2320 or using microphone 2350 to activate sound, to input various types of information, such as phone numbers. Processor 2310 can receive and process user information and perform appropriate functions, such as making a call using the entered phone number. In some scenarios, data can be retrieved from SIM card 2325 or memory 2330 to perform appropriate functions. In some scenarios, processor 2310 can display various types of information and data on display 2315 for user convenience.

[0395] Transceiver 2335 is connected to processor 2310 and transmits and / or receives RF signals. The processor can control the transceiver to initiate communication or transmit RF signals, including various types of information or data such as voice communication data. The transceiver includes a transmitter and a receiver for transmitting and receiving RF signals. Antenna 2340 facilitates the transmission and reception of RF signals. In some implementation examples, when the transceiver receives an RF signal, it can forward the signal and convert it into a baseband frequency for use in processing performed by the processor. The signal can be processed using various techniques, such as converting it into audible or readable information, for output through speaker 2345. Figure 25 The transceiver in the middle can be Figure 26 The transceivers in the middle are 106 and 206.

[0396] although Figure 25 Not shown in the diagram, but the UE may also include various components such as a camera and a Universal Serial Bus (USB) port. For example, the camera may be connected to the processor 2310.

[0397] Figure 25 This is an example of a UE implementation, and the implementation examples disclosed herein are not limited to this. The UE does not necessarily have to include... Figure 25 All components are shown. That is to say, some components, such as the keyboard 2320, GPS chip 2360, sensor 2365, and SIM card 2325, may not be required. In this case, they may not be included in the UE.

[0398] Figure 26 Another example of a wireless device is shown.

[0399] Reference Figure 26 The wireless device may include at least one processor 102 and 202, at least one memory 104 and 204, at least one transceiver 106 and 206, and at least one antenna 108 and 208.

[0400] Figure 26 Examples of wireless devices described in the document and Figure 22 The difference between the examples of wireless devices described in the text and the examples of wireless devices described in the text is that... Figure 22 The processors 102 and 202 are separate from the memories 104 and 204, while Figure 26 In the example, memories 104 and 204 are included in processors 102 and 202. That is, the processor and memory can form a chipset.

[0401] Figure 27 The communication system 1 used in this specification is shown.

[0402] Reference Figure 27 The communication system 1 used in this specification includes wireless devices, base stations (BS), and networks. In this document, a wireless device refers to a device that communicates using radio access technology (RAT) (e.g., 5G New RAT (NR)) or Long Term Evolution (LTE) and may be referred to as a communication / radio / 5G device. Wireless devices may include, but are not limited to, robots 100a, vehicles 100b-1 and 100b-2, extended reality (XR) devices 100c, handheld devices 100d, home appliances 100e, Internet of Things (IoT) devices 100f, and artificial intelligence (AI) devices / servers 400. For example, a vehicle may include a vehicle with wireless communication capabilities, an autonomous vehicle, and a vehicle capable of communication between vehicles. Here, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). XR devices may include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices and may be implemented in the form of head-mounted displays (HMDs), head-up displays (HUDs) installed in vehicles, televisions, smartphones, computers, wearable devices, home appliances, digital signage, vehicles, robots, etc. Handheld devices may include smartphones, smart tablets, wearable devices (e.g., smartwatches or smart glasses), and computers (e.g., laptops). Home appliances may include televisions, refrigerators, and washing machines. IoT devices may include sensors and smart meters. For example, the BS and network can be implemented as wireless devices, and a particular wireless device 200a can operate as a BS / network node relative to other wireless devices.

[0403] Wireless devices 100a to 100f can connect to network 300 via BS 200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can connect to AI server 400 via network 300. Network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although wireless devices 100a to 100f can communicate with each other via BS 200 / network 300, wireless devices 100a to 100f can also perform direct communication with each other without going through the BS / network (e.g., secondary link communication). For example, vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). In addition, IoT devices (e.g., sensors) can perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0404] Wireless communication / connections 150a, 150b, or 150c can be established between wireless devices 100a to 100f / BS 200 or between BS 200 and BS 200. In this document, wireless communication / connections can be established via various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, secondary link communication 150b (or D2D communication), or inter-BS communication (e.g., relay, integrated access and backhaul (IAB)). Wireless devices and BS / wireless devices can transmit / receive radio signals to / from each other via wireless communication / connections 150a, 150b, or 150c. For example, wireless communication / connections 150a, 150b, or 150c can transmit / receive signals via various physical channels. To this end, at least a portion of various configuration information configuration processes, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation processes for transmitting / receiving radio signals can be performed based on various proposals of this disclosure.

[0405] In addition, NR supports multiple parameter sets (or subcarrier spacing (SCS)) to support a variety of 5G services. For example, a 15 kHz SCS can support wide-area coverage in traditional cellular bands. A 30 kHz / 60 kHz SCS supports dense urban areas, lower latency, and wider carrier bandwidth. A 60 kHz or higher SCS uses a bandwidth greater than 24.25 GHz to overcome phase noise.

[0406] NR bands can be defined as two types of frequency ranges (FR1, FR2). The values ​​of the frequency ranges can be changed. For example, the two types of frequency ranges (FR1, FR2) are shown in Table 5 below. For ease of explanation, in the frequency ranges used in NR systems, FR1 (frequency range 1) can represent "below 6 GHz," and FR2 (frequency range 2) can represent "above 6 GHz" and can also be referred to as millimeter wave (mmW).

[0407] [Table 5]

[0408] As mentioned above, the frequency range value in an NR system can be varied. For example, as shown in Table 6 below, FR1 can include a frequency band ranging from 410MHz to 7125MHz. That is, FR1 can include a frequency band of at least 6GHz (or 5850MHz, 5900MHz, 5925MHz, etc.). For example, the frequency band of at least 6GHz (or 5850MHz, 5900MHz, 5925MHz, etc.) included in FR1 can include unlicensed frequency bands. Unlicensed frequency bands can be used for various purposes, such as unlicensed frequency bands for vehicle-specific communications (e.g., autonomous driving).

[0409] [Table 6]

[0410] The claims disclosed in this specification can be combined in various ways. For example, technical features in the method claims of this specification can be combined to implement or perform in a device, and technical features in the device claims of this specification can be combined to implement or perform in a method. Additionally, technical features in the method claims and device claims of this specification can be combined to implement or perform in a device.

Claims

1. A method, the method comprising: The user equipment (UE) receives downlink data from the network in the first time slot; as well as The UE determines a second time slot for sending a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) message to the network for the downlink data. Wherein, based on the second time slot being an FD time slot composed of full-duplex FD resources, the UE sends the HARQ-ACK information in the third time slot, the third time slot being an HD time slot composed of half-duplex HD resources and located after the FD time slot.

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

3. The method according to claim 1, wherein, Since the second time slot is an HD time slot Based on the fact that the HD time slot is a downlink time slot, the UE sends the HARQ-ACK information in the third time slot, and based on the fact that the HD time slot is an uplink time slot, the UE sends the HARQ-ACK information in the second time slot.

4. The method according to claim 1, wherein, Based on the fact that the first time slot is time slot n and the second time slot is time slot n+k, the value of k is specified by a specific field of the downlink control information (DCI) of the physical downlink shared channel (PDSCH) that is scheduled to end in time slot n.

5. The method according to claim 1, wherein, The first time slot is time slot n and the second time slot is time slot n+k, where the value of k is provided by higher layer parameters.

6. The method according to claim 1, wherein the method comprises: Receive information about the maximum value of the gap between the second time slot and the third time slot.

7. The method according to claim 6, wherein, The maximum value of the gap is related to the number of HD time slots following the second time slot.

8. The method according to claim 1, wherein the method comprises: The UE determines the fourth time slot for transmitting uplink control information (UCI). Specifically, the UE transmits the UCI in the fifth time slot, which is an FD time slot composed of full-duplex FD resources, based on the fourth time slot being an FD time slot composed of half-duplex HD resources and located after the FD time slot.

9. The method according to claim 8, wherein, The maximum value of the gap between the fourth and fifth time slots is applied differently depending on the type of UCI.

10. The method according to claim 1, wherein the method comprises: Receive information about the maximum value of the gap between the first time slot and the third time slot.

11. A user equipment (UE), the UE comprising: At least one transceiver; At least one memory; as well as At least one processor, said at least one processor being operatively coupled to said at least one memory and said at least one transceiver, The at least one memory includes instructions executed by the at least one processor to perform operations. The operation includes: Receive downlink data from the network in the first time slot; and A second time slot is determined for sending a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) message to the network for the downlink data. Wherein, based on the second time slot being an FD time slot composed of full-duplex FD resources, the UE sends the HARQ-ACK information in the third time slot, the third time slot being an HD time slot composed of half-duplex HD resources and located after the FD time slot.

12. The UE according to claim 11, wherein, The HD timeslot is one of a downlink timeslot, a flexible timeslot, or an uplink timeslot, and the third timeslot is the uplink timeslot.

13. The UE according to claim 11, wherein, Since the second time slot is an HD time slot Since the HD time slot is a downlink time slot, the UE sends the HARQ-ACK information in the third time slot, and Since the HD time slot is an uplink time slot, the UE sends the HARQ-ACK information in the second time slot.

14. The UE according to claim 11, wherein, Based on the fact that the first time slot is time slot n and the second time slot is time slot n+k, the value of k is specified by a specific field of the downlink control information (DCI) of the physical downlink shared channel (PDSCH) that is scheduled to end in time slot n.

15. The UE according to claim 11, wherein, The first time slot is time slot n and the second time slot is time slot n+k, where the value of k is provided by higher layer parameters.

16. The UE according to claim 11, wherein, The operation includes receiving information about the maximum value of the gap between the second time slot and the third time slot.

17. The UE according to claim 16, wherein, The maximum value of the gap is related to the number of HD time slots following the second time slot.

18. The UE according to claim 11, wherein, The operation includes: determining a fourth time slot for transmitting uplink control information (UCI), wherein, based on the fourth time slot being an FD time slot composed of full-duplex FD resources, the UE transmits the UCI in a fifth time slot, the fifth time slot being an HD time slot composed of half-duplex HD resources and located after the FD time slot.

19. The UE according to claim 18, wherein, The maximum value of the gap between the fourth and fifth time slots is applied differently depending on the type of UCI.

20. An apparatus, the apparatus comprising: At least one memory; as well as At least one processor, said at least one processor being operatively coupled to said at least one memory. Wherein, the at least one memory includes instructions executed by the at least one processor to perform operations, the operations including: Receive downlink data from the network in the first time slot; and A second time slot is determined for sending a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) message to the network for the downlink data. Wherein, based on the second time slot being an FD time slot composed of full-duplex FD resources, the user equipment sends the HARQ-ACK information in the third time slot, which is an HD time slot composed of half-duplex HD resources and located after the FD time slot.

21. At least one computer-readable medium CRM, said at least one computer-readable medium comprising instructions based on instructions executable by at least one processor, said instructions being used to: Receive downlink data from the network in the first time slot; and A second time slot is determined for sending a Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) message to the network for the downlink data. in, Based on the fact that the second time slot is an FD time slot composed of full-duplex FD resources, the user equipment sends the HARQ-ACK information in the third time slot, which is an HD time slot composed of half-duplex HD resources and located after the FD time slot.

22. A method, the method comprising: The base station sends downlink data to the user equipment (UE) in the first time slot; as well as The base station determines a second time slot for receiving HARQ-ACK information for the downlink data from the UE. Wherein, based on the second time slot being an FD time slot composed of full-duplex FD resources, the base station receives the HARQ-ACK information in the third time slot, the third time slot being an HD time slot composed of half-duplex HD resources and located after the FD time slot.

23. A base station, the base station comprising: At least one transceiver; At least one memory; as well as At least one processor, said at least one processor being operatively coupled to said at least one memory and said at least one transceiver, Wherein, the at least one memory includes instructions executed by the at least one processor to perform operations, the operations including: Send downlink data to the user equipment (UE) in the first time slot; and A second time slot is determined for receiving HARQ-ACK information from the UE for the downlink data. Wherein, based on the second time slot being an FD time slot composed of full-duplex FD resources, the base station receives the HARQ-ACK information in the third time slot, the third time slot being an HD time slot composed of half-duplex HD resources and located after the FD time slot.

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