Method for operating device in wireless communication system and device using same

Abstract

An operation method of an apparatus in a wireless communication system and an apparatus using the same are provided. The method includes: receiving operation information from a base station, the operation information indicating which one of a half-duplex (HD) operation and a full-duplex (FD) operation is performed by a terminal with respect to a specific time resource; and performing, by the terminal, any one of an HD operation and an FD operation on the specific time resource based on the operation information.

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 by both the User Equipment (UE) and the base station. When performing FD operation, the device can simultaneously perform downlink reception and uplink transmission within a specific time resource. Half-duplex (HD) operation differs in that only one of downlink reception or uplink 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] When a UE operates in full-duplex mode, it simultaneously performs downlink (DL) reception and uplink (UL) transmission. This increases data transmission and reception throughput and reduces latency for data transmission and reception. However, full-duplex operation can introduce self-interference (SI), which is absent in half-duplex operation (i.e., the UE's UL transmission affects its own DL reception). Furthermore, cross-link interference (CLI) may be exacerbated compared to the environment in half-duplex operation. Considering these drawbacks, the transmission and reception quality of each transmitted and received signal / channel may be degraded when the UE operates in full-duplex mode compared to the case of half-duplex operation.

[0006] In view of the above problems, a method and equipment for operating the equipment are needed. Summary of the Invention

[0007] Technical issues

[0008] 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.

[0009] Technical solution

[0010] 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 from a base station operation information instructing the UE to perform either HD (half-duplex) operation or FD (full-duplex) operation for a specific time resource, and performs one of the HD or FD operations in the specific time resource based on the operation information. When the reception of a specific signal or channel is scheduled in the specific time resource, even if the operation information instructs the UE to perform FD operation for the specific time resource, the UE can still perform reception operation for the specific signal or channel in the specific time resource, and may not perform uplink transmission.

[0011] In another aspect, a UE, a device, and a computer-readable medium for performing the above-described methods are provided.

[0012] 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 a base station, the base station sends operation information to a UE instructing the UE to perform either an HD operation or an FD operation in a specific time resource, and based on the operation information, performs one of the HD operation and FD operation with the UE in the specific time resource.

[0013] Beneficial effects

[0014] According to the method disclosed herein, a UE that supports both HD and FD operations can perform the appropriate operation between FD and HD operations based on the channel environment and service type, thereby improving the system's transmission and reception performance.

[0015] Furthermore, even when time resources are scheduled or designated for FD operation, the UE performs HD operation when signals / channels that are important to its reception reliability or have priority exist in the time resources, thereby minimizing the impact on the reception performance of the signals / channels. Attached Figure Description

[0016] Figure 1 An example of a wireless communication system to which this disclosure can be applied is shown.

[0017] Figure 2 This is a block diagram illustrating the radio protocol architecture for the user plane.

[0018] Figure 3 This is a block diagram illustrating the radio protocol architecture used for the control plane.

[0019] Figure 4 An example of a system architecture for a next-generation radio access network (NG-RAN) using NR is presented.

[0020] Figure 5 This illustrates the functional division between NG-RAN and 5GC.

[0021] Figure 6 An example of a frame structure that can be applied to NR is shown.

[0022] Figure 7 The time slot structure of an NR frame is illustrated.

[0023] Figure 8 An example of CORESET is shown.

[0024] Figure 9 An example of a frame structure for a new radio access technology is shown.

[0025] Figure 10 An example of a self-contained time slot structure is shown.

[0026] Figure 11 The physical channel and typical signal transmission are illustrated.

[0027] Figure 12 This is an example of the repeating type A of PUSCH.

[0028] Figure 13 This is an example of the repeating type B of PUSCH.

[0029] Figure 14 An example of how to apply full-duplex within a carrier wave is shown.

[0030] 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.

[0031] Figure 16 Examples of first time resources, second time resources, first frequency resources, and second frequency resources are shown.

[0032] Figure 17 Another example of first time resources, second time resources, first frequency resources, and second frequency resources is shown.

[0033] Figure 18 An example of determining HD / FD operation according to Method 1 is shown.

[0034] Figure 19Examples of UE operations based on methods 2 and 3 are shown.

[0035] Figure 20 An example of the UE's operation method is shown.

[0036] Figure 21 Examples of signaling procedures and operations between the base station and the UE are illustrated.

[0037] Figure 22 A wireless device applicable to this specification is shown.

[0038] Figure 23 An example of the signal processing module structure is shown.

[0039] Figure 24 Another example of the structure of a signal processing module in a transmitting device is shown.

[0040] Figure 25 An example of a wireless communication device according to an embodiment of this disclosure is shown.

[0041] Figure 26 Another example of a wireless device is shown.

[0042] Figure 27 The communication system 1 used in this specification is shown. Detailed Implementation

[0043] 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”.

[0044] 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".

[0045] 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".

[0046] 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".

[0047] 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".

[0048] The technical features described individually in one of the accompanying drawings in this specification can be implemented individually or simultaneously.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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).

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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).

[0066] 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.

[0067] The following section describes the new radio access technology (New RAT, NR).

[0068] 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).

[0069] Figure 4 An example of a system architecture for a next-generation radio access network (NG-RAN) using NR is presented.

[0070] 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.

[0071] Figure 5 This illustrates the functional division between NG-RAN and 5GC.

[0072] 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.

[0073] Figure 6 An example of a frame structure that can be applied to NR is shown.

[0074] 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).

[0075] Table 1 below illustrates the subcarrier spacing configuration μ.

[0076] [Table 1]

[0077] 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.

[0078] [Table 2]

[0079] exist Figure 6 The example shows the cases where μ = 0, 1, 2, and 3.

[0080] 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.

[0081] [Table 2-1]

[0082] 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.

[0083] Figure 7 The time slot structure is illustrated.

[0084] 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.

[0085] The Physical Downlink Control Channel (PDCCH) may include one or more Control Channel Elements (CCEs), as illustrated in Table 3 below.

[0086] [Table 3]

[0087] 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.

[0088] 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.

[0089] In NR, a new unit called the Control Resource Set (CORESET) can be introduced. The UE can receive the PDCCH in the CORESET.

[0090] Figure 8 An example of CORESET is shown.

[0091] 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).

[0092] 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.

[0093] Multiple CORESETs can be configured for a UE.

[0094] 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.

[0095] 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.

[0096] CORESET can include UE-specific CORESET for sending UE-specific control information and public CORESET for sending common control information for all UEs.

[0097] 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.

[0098] The following technologies / features can be applied in NR.

[0099] <Self-contained subframe structure>

[0100] Figure 9 An example of a frame structure used for new radio access technologies is shown.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] Figure 10 An example of a self-contained time slot structure is shown.

[0105] 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.

[0106] 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.

[0107] DL regions: (i) DL data region, (ii) DL control region + DL data region

[0108] UL area: (i) UL data area, (ii) UL data area + UL control area.

[0109] 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.

[0110] <Simulated Beamforming #1>

[0111] 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.

[0112] 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.

[0113] 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.

[0114] <Simulated Beamforming #2>

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] The Transmission Configuration Indicator (TCI) state will now be described. The TCI state 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 state.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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).

[0127] [Table 4]

[0128] 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 PDDCH) or the CSI-RS port of the CSI-RS resource.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] Figure 11 The physical channel and typical signal transmission are illustrated.

[0133] 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.

[0134] 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.

[0135] (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.

[0136] 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).

[0137] 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).

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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 makes it easier to deploy a dense network of self-backhauled NR cells in a more integrated manner by establishing multiple control and data channels / processes defined as providing access to or from the UE. Such a system is referred to as integrated access and backhaul links (IAB).

[0144] The following definitions are made in this disclosure.

[0145] - AC(x): The access link between node (x) and the UE.

[0146] - BH(xy): The backhaul link between node (x) and node (y).

[0147] In this case, a 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.

[0148] When there are relay node 1 and relay node 2, and relay node 1 is connected to relay node 2 via a backhaul link and relays the data transmitted and received by relay node 2, relay node 1 is referred to as the parent node of relay node 2, and relay node 2 is referred to as the child node of relay node 1.

[0149] <PUSCH repetition>

[0150] PUSCH repetition types A and B are introduced in the standard specifications (e.g., NR Rel-15 / 16). Depending on the PUSCH repetition type, transmission is performed as follows.

[0151] 1) PUSCH repetition type A

[0152] Figure 12 is an example of PUSCH repetition type A.

[0153] 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.

[0154] 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.

[0155] i) Intra-slot frequency hopping (intra-slot frequency hopping) is applicable to single-slot and multi-slot PUSCH transmission.

[0156] ii) Inter-slot frequency hopping is applicable to multi-slot PUSCH transmission.

[0157] 2) PUSCH repeat type B

[0158] Figure 13 This is an example of the repeating type B of PUSCH.

[0159] 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).

[0160] However, in cases of actual PUSCH repetition, 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).

[0161] 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.

[0162] 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.

[0163] 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.

[0164] Now, we will describe full-duplex operation.

[0165] 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.

[0166] 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.

[0167] Figure 14 An example of how to apply full-duplex within a carrier wave is shown.

[0168] Reference Figure 14 Full-duplex methods include, for example, in Figure 14The sub-band full-duplex (hereinafter, it may be referred to as sub-band full-duplex or SBFD) shown in (a) 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.

[0169] 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.

[0170] 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.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] 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.

[0175] In the time resources utilized for SSFD operation, the entire frequency resource can be used for both DL and UL. Alternatively, in order 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, in order to reduce ACI on UL reception, one or both ends of the carrier can be used only for DL transmission.

[0176] In the present disclosure, the time slots resources for HD operation are referred to as HD time slots, and the time slots 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.

[0177] 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.

[0178] 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 perform DL and UL transmission and reception simultaneously using the same or different frequency resources in the same time resource.

[0179] Alternatively, only the base station can perform full duplex operation, while the UE can perform half duplex operation. The base station can perform DL and UL transmission and reception simultaneously 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.

[0180] 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.

[0181] <A. Characteristics of DL / UL Time / Frequency Resources for SBFD and SSFD Operations>

[0182] 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).

[0183] 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.

[0184] 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.

[0185] 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).

[0186] Figure 16 Examples of first time resources, second time resources, first frequency resources, and second frequency resources are shown.

[0187] 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.

[0188] 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.

[0189] Figure 17 Another example of first time resources, second time resources, first frequency resources, and second frequency resources is shown.

[0190] 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.

[0191] 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.

[0192] The first frequency resource and / or the second frequency resource may have all or some of the following characteristics.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] When the UE operates in the traditional TDD mode, the following assumptions are made for the symbols that transmit SSB (SS / PBCH).

[0202] 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').

[0203] 2) SS / PBCH transmission symbols can be configured as uplinks in SFI (Slot Format Indication) without using DCI format 2_0.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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 a cell performs SSFD operations.

[0211] 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.

[0212] 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.

[0213] 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).

[0214] 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.

[0215] 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.

[0216] 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.

[0217] 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.

[0218] 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.

[0219] 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.

[0220] 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).

[0221] As mentioned above, in a cell that performs / supports full-duplex operation, the cell can perform full-duplex operation such as SBFD or SSFD in some time resources and can perform half-duplex operation in the remaining time resources.

[0222] For UEs capable of full-duplex operation, the UE can simultaneously perform DL reception and UL transmission within the cell's full-duplex operation time resources. When the UE performs DL reception and UL transmission simultaneously, the throughput for data transmission and reception can be increased, and the waiting time for data transmission and reception can be reduced.

[0223] On the other hand, self-interference (SI) may occur, meaning that interference from the UE's UL transmission affects its own DL reception, which does not exist when the UE is operating in half-duplex. Furthermore, the impact of cross-link interference (CLI) may be more severe compared to the environment in which the UE operates in half-duplex. In this case, the transmission and reception quality of each UE's transmit / receive signal / channel may be degraded compared to the case where the UE is operating in half-duplex. In particular, due to self-interference that occurs when the UE is operating in full-duplex, the reception quality of DL signals / channels may be degraded compared to the case where the UE is operating in half-duplex.

[0224] Therefore, when the UE transmits and receives signals / channels that are important to its reliability, it may be helpful for the UE to perform half-duplex operation in the relevant resources and only transmit and receive that signal / channel.

[0225] In view of the above, this disclosure proposes that, within the time resources for full-duplex operation in a cell, a UE operating in full-duplex mode may selectively operate in half-duplex or full-duplex mode. That is, within the time resources for full-duplex operation in a cell, a UE may operate in full-duplex mode in some time resources and in half-duplex mode in the remaining time resources.

[0226] More specifically, when the cell is operating in full-duplex mode, a method is proposed to determine whether a UE capable of full-duplex operation is performing full-duplex (FD) operation or half-duplex (HD) operation in a specific resource.

[0227] The following description applies to time resources where the cell operates in FD mode. In time resources where the cell operates in HD mode, the UE can determine that it always operates in HD mode.

[0228] In resources where the base station operates in HD, the base station can perform DL transmission or UL reception.

[0229] In the resources where the base station operates in FD mode, 1) the base station can use resources in the first frequency resource to perform DL transmission and / or can use resources in the second frequency resource to perform UL reception.

[0230] 2) For a UE operating in HD mode, the base station can perform DL transmission to the UE or UL reception from the UE. For a UE operating in FD mode, the base station can perform DL transmission to the UE and / or UL reception from the UE.

[0231] 3) The base station may determine whether the FD UE is operating as FD or HD in a specific time resource based on the methods proposed below. Alternatively, the base station may determine whether the FD UE is operating as FD or HD in a specific time resource based on the methods proposed below, and may indicate the necessary information to the UE for this purpose.

[0232] Based on the above discussion, a method is proposed to determine whether a UE capable of full-duplex operation is operating in full-duplex or half-duplex mode in a specific resource during in-carrier full-duplex operation.

[0233] In the following text, the network can be interpreted as being replaced by a base station, gNB, or CU / DU. Furthermore, the UE can be interpreted as being replaced by the MT (Mobile Terminal Unit) of the IAB node.

[0234] Information (hereinafter referred to as operation information) can be provided from the network to the UE regarding whether the UE performs an HD operation or an FD operation for a specific time resource. Operation information can be provided to the UE in various ways. For example, operation information can be provided to the UE based on method 1 or method 2 described below.

[0235] Method 1. Indication of HD / FD operations for resources per time

[0236] Information (operation information) can be sent from the network to the UE regarding whether the UE performs HD operation or FD operation for a specific time resource.

[0237] For example, the network can instruct the UE whether to perform HD operation or FD operation in each time resource.

[0238] Alternatively, information about time resources for FD operation can be provided to the UE from the network. In this case, the UE can determine that it will operate in HD for the remaining time resources.

[0239] Alternatively, the network can indicate to the UE information about the time resources for the UE to operate in HD mode. In this case, the UE can determine that it will operate in FD mode for the remaining time resources.

[0240] This instruction can be delivered via signaling such as RRC, MAC-CE, and / or DCI.

[0241] This instruction may be applied periodically, semi-permanently, and / or intermittently.

[0242] In the time resources of the cell operating in half-duplex mode, the UE can determine that the UE is operating in HD mode.

[0243] When the UE determines through the above indication that it will operate in FD mode in a specific time resource, the UE can simultaneously perform DL reception and UL transmission in that time resource.

[0244] In this case, the UE's DL reception can be restricted to be performed within the first frequency resource (see [link]). Figure 16 and Figure 17 (The same applies below). UE UL transmission can be restricted to be performed within the second frequency resource (see [link]). Figure 16 and Figure 17 (The same applies below).

[0245] When the UE determines that it will operate in HD mode in a specific time resource through the above indication, the UE may perform only one of DL reception and UL transmission in that time resource.

[0246] When time resources are resources used by the cell in FD operation, 1) when the UE performs DL reception, DL reception can be restricted to be performed within the first frequency resource. 2) when the UE performs UL transmission, UL transmission can be restricted to be performed within the second frequency resource.

[0247] When the time resource is a resource used by the cell in HD operation, 1) when the UE performs DL reception, it can perform DL reception within the entire frequency resource (within the DL BWP). That is, it can also perform DL reception in resources other than the first frequency resource. 2) when the UE performs UL transmission, it can perform UL transmission within the entire frequency resource (within the UL BWP). That is, it can also perform UL transmission in resources other than the second frequency resource.

[0248] Therefore, the base station can instruct the UE on the aforementioned 'information regarding whether the UE performs HD operation or FD operation for a specific time resource'.

[0249] Figure 18 An example of determining HD / FD operation according to Method 1 is shown.

[0250] Reference Figure 18 The UE receives operation information from the network (e.g., a base station). The operation information indicates which operation, HD or FD, the UE will perform for a specific time resource.

[0251] For example, the operation information can explicitly indicate the FD operation or HD operation for each of multiple time resources.

[0252] Alternatively, the operation information may explicitly indicate FD or HD operations for some of the multiple time resources, and may implicitly indicate FD or HD operations for the remaining time resources.

[0253] For example, such as Figure 18 As shown, operation information can be provided in a way that explicitly instructs the UE to use time resources for FD operation. In this case, the UE can implicitly determine that the remaining time resources besides those for FD operation are time resources for HD operation.

[0254] Alternatively, for example, operational information can be provided in a manner that explicitly instructs the UE to operate with time resources in HD mode. In this case, the remaining time resources other than those for HD operation can be implicitly defined as time resources for FD operation.

[0255] Method 2. Indication of UE's FD operation mode on / off

[0256] Information (operation information) can be sent from the network to the UE regarding which mode to operate in, either HD or FD.

[0257] For example, information about the FD operating mode can be indicated to the UE from the network. When the UE is indicated to operate in FD operating mode (e.g., an indication to enable FD operating mode), the UE determines that it is operating in FD mode. When the UE is indicated not to operate in FD operating mode (e.g., an indication to disable FD operating mode), the UE determines that it is operating in HD mode.

[0258] As another example, information about HD operating mode can be indicated to the UE from the network. When the UE is indicated to operate in HD operating mode (e.g., a start indication for HD operating mode), the UE determines that it is operating in HD mode. When the UE is indicated not to operate in HD operating mode (e.g., a stop indication for HD operating mode), the UE determines that it is operating in FD mode.

[0259] As another example, information about the applied operation in HD and FD modes can be indicated from the network to the UE. When the UE is indicated to HD operation mode, the UE determines that it is operating in HD mode. When the UE is indicated to FD operation mode, the UE determines that it is operating in FD mode.

[0260] When no operation information is indicated to the UE, the UE can determine that it is performing an HD operation. Alternatively, when no operation information is indicated to the UE, the UE can determine that it is performing an FD operation.

[0261] Operational information can be delivered via signaling such as RRC, MAC-CE, and / or DCI.

[0262] Operational information can be applied periodically, semi-persistently, and / or non-periodically.

[0263] Additionally, the operation information may include a validity period. When the validity period has elapsed based on the time the UE receives the operation information or the time the UE applies the operation information, the UE will no longer apply the operation information.

[0264] When the UE is instructed or determined to operate in FD mode via the above operation information, the UE can simultaneously perform DL reception and UL transmission. This operation can be applied until the operation information is updated or during the valid time period.

[0265] In the cell's half-duplex operation time resources: 1) When the UE performs DL reception, it can perform DL reception across the entire frequency resource (within the DL BWP). That is, it can also perform DL reception in resources other than the first frequency resource. 2) When the UE performs UL transmission, it can perform UL transmission across the entire frequency resource (within the UL BWP). That is, it can also perform UL transmission in resources other than the second frequency resource.

[0266] In the time resources for full-duplex operation within the cell, 1) UE's DL reception can be restricted to be performed within the first frequency resource. 2) UE's UL transmission can be restricted to be performed within the second frequency resource.

[0267] When the UE is instructed or determined to operate in HD mode via the above operation information, the UE may perform only one of DL reception and UL transmission within a specific time resource. This operation may be applied until the operation information is updated or during the valid time period.

[0268] Additionally, within the time resources for half-duplex operation in the cell: 1) When the UE performs DL reception, it can perform DL reception across the entire frequency resource (within the DL BWP). That is, it can also perform DL reception in resources other than the first frequency resource. 2) When the UE performs UL transmission, it can perform UL transmission across the entire frequency resource (within the UL BWP). That is, it can also perform UL transmission in resources other than the second frequency resource.

[0269] Within the time resources for full-duplex operation in the cell: 1) When the UE performs DL reception, it can perform DL reception across the entire frequency resource (within the DL BWP). That is, it can also perform DL reception in resources other than the first frequency resource. 2) When the UE performs UL transmission, it can perform UL transmission across the entire frequency resource (within the UL BWP). That is, it can also perform UL transmission in resources other than the second frequency resource.

[0270] Therefore, the base station can indicate to the UE the above-mentioned 'information on which mode to operate between HD operation mode and FD operation mode' (i.e., operation information).

[0271] Method 3. Determine HD / FD operation based on signals / channels transmitted / received by the UE

[0272] The UE can determine which resources it will perform HD operations for transmitting and receiving specific signals / channels. For the remaining resources, the UE can determine which resources it will perform FD operations.

[0273] Specifically, in resources of a cell operating in FD mode, the UE can perform DL reception only or DL ​​reception and UL transmission simultaneously, depending on the type of DL signal / channel received by the UE.

[0274] Even if the UE can perform FD operation in a specific time resource, when the UE receives a specific DL signal / channel in that time resource, the UE will not perform UL signal / channel transmission in that time resource.

[0275] Alternatively, even if the UE can perform FD operation in a specific frequency resource within a specific time resource, the UE will not perform UL signal / channel transmission in that resource when it receives DL signal / channel in that resource.

[0276] For example, for the following signals / channels whose reception reliability is relatively important compared to other signals / channels, the UE may perform only DL reception and may not perform UL transmission: 1)SSB, 2)CORESET0, 3)PDCCH.

[0277] Additionally / independently, the base station can indicate priority information for transmitting and receiving specific signals / channels to the UE, and it can determine that the UE performs HD operation during the time and / or frequency resources for transmitting and receiving signals / channels indicated as having priority. That is, with FD operation as the default operation, the UE performs HD operation during the time and / or frequency resources for transmitting and receiving signals / channels indicated as having priority.

[0278] Alternatively, the base station can indicate priority information for transmitting and receiving specific signals / channels to the UE, and can determine that the UE performs FD operation during the time and / or frequency resources for transmitting and receiving signals / channels indicated as having priority. That is, with HD operation as the default operation, the UE performs FD operation during the time and / or frequency resources for transmitting and receiving signals / channels indicated as having priority.

[0279] The base station can indicate priority information for receiving a specific DL signal / channel to the UE, and when the UE receives a DL signal / channel that is indicated to have priority in a specific time resource, the UE will not perform the transmission of UL signal / channel in that time resource.

[0280] Alternatively, the base station can indicate priority information for receiving a specific DL signal / channel to the UE, and when the UE receives a DL signal / channel indicated as having priority in a specific frequency resource within a specific time, the UE will not perform UL signal / channel transmission in the resource where the DL signal / channel was received.

[0281] Specifically, priority information from the base station can be used to instruct the UE, and its operation can be determined based on this.

[0282] When a UE is scheduled for use with a PDSCH from a base station, the UE can be indicated along with the PDSCH priority information.

[0283] For example, priority information can be indicated by scheduling the DCI of the PDSCH.

[0284] Alternatively, for example, for SPS-PDSCH, priority information can be indicated by configuring the RRC signaling of SPS-PDSCH and / or by activating the DCI of SPS-PDSCH.

[0285] When the UE receives a PDSCH that is indicated as having priority, the UE operates in half-duplex mode within the time and / or frequency resources where the PDSCH was received. Therefore, the UE does not perform UL signal / channel transmission within the time and / or frequency resources.

[0286] The base station can indicate to the UE the priority information of the PDCCHs transmitted within the PDCCH search space linked to each CORESET. And / or, the base station can indicate to the UE the priority information of the PDCCHs transmitted within each PDCCH search space.

[0287] Priority information can be indicated together by configuring the RRC signaling of the CORESET and / or PDCCH search spaces.

[0288] When the UE receives / monitors the PDCCH in the PDCCH search space that has been determined to have priority, the UE operates in half-duplex mode in the corresponding time and / or frequency resources, and therefore does not perform the transmission of UL signals / channels.

[0289] Additionally / independently, during the time and / or frequency resources when the UE transmits some UL signals / channels, the UE may transmit UL signals / channels simultaneously with receiving DL signals / channels, without applying the method described above. Such UL signals / channels may include the following signals / channels.

[0290] 1) URLLC PUSCH, 2) PRACH.

[0291] Figure 19 Examples of UE operations based on methods 2 and 3 are shown.

[0292] Reference Figure 19 It can instruct the UE from the network on which mode to operate in, either FD or HD.

[0293] For example, the operation information could be FD operation information that instructs the UE on the FD operation mode, and could indicate the enabling or disabling of the FD operation mode for a specific time resource.

[0294] exist Figure 19 In the example, an enable instruction for FD operation mode is provided for time resources (191, 192, 193, 194, 195), and an disable instruction for FD operation mode is provided for the remaining time resources.

[0295] In this case, the UE can determine, based on the FD operation information, whether to perform FD operation in specific time resources (191, 192, 193, 194, 195) and HD operation in the remaining time resources.

[0296] In this scenario, when the reception of signals / channels (e.g., SSB, CORESET #0, PDCCH) whose reliability is critical to the UE is scheduled in some of the time resources (e.g., 192, 195) within the time resources where the UE will perform FD operations, or when the UE becomes aware of the presence of such signal / channel reception, the UE performs HD operations instead of FD operations in time resources (192, 195). That is, the UE can perform signal / channel reception only without performing UL transmission in time resources (192, 195). A similar approach can be applied when the reception of signals / channels with priority is scheduled in the time resources where the UE will perform FD operations or when such reception is present.

[0297] exist Figure 19 The example illustrates a scenario where a signal / channel with significant reception reliability or priority exists in the time resources during which the UE will perform FD operation. However, there may be situations where a signal / channel that is important for transmission or has transmission priority (e.g., URLLC PUSCH, PRACH) exists in the time resources during which the UE will perform FD operation. In this case, the UE can perform UL transmission while simultaneously receiving DL signals / channels in the FD time resources.

[0298] Figure 20 An example of the UE's operation method is shown.

[0299] Reference Figure 20 The UE receives operation information from the base station instructing the UE to perform either HD operation or FD operation for a specific time resource (S201).

[0300] The UE performs one of the HD operation and FD operation in a specific time resource based on the operation information (S202).

[0301] According to the implementation method, when the operation information indicates that the UE will perform FD operation in some time resources among multiple time resources, the UE can perform FD operation in some time resources and can perform HD operation in the remaining time resources among the multiple time resources.

[0302] According to the implementation method, when the operation information indicates that the UE will perform HD operation in some time resources among multiple time resources, the UE can perform HD operation in some time resources and can perform FD operation in the remaining time resources among the multiple time resources.

[0303] A specific example of this operation has already been described in Method 1.

[0304] According to the implementation method, the operation information may indicate either enabling information that the UE will perform FD operation for a specific time resource or disabling information that the UE will perform HD operation.

[0305] According to the implementation method, the operation information may indicate either enabling information that the UE will perform HD operation for a specific time resource or disabling information that the UE will perform FD operation.

[0306] A specific example of this operation has already been described in Method 2.

[0307] The UE can perform FD operations in time resources that indicate operation information, and can perform HD operations in time resources that do not indicate operation information.

[0308] Alternatively, the UE may perform HD operations in time resources that indicate operation information, and may perform FD operations in time resources that do not indicate operation information.

[0309] According to the implementation method, the UE can also receive validity period information indicating the validity period of the operation information. In this case, when the validity period expires, the UE may not apply the operation information.

[0310] Meanwhile, when the reception of a specific signal or channel (e.g., a signal / channel that is important for its reception reliability or a signal / channel with priority) is scheduled in a specific time resource, the UE can perform a reception operation for a specific signal or channel in the specific time resource even if the operation information indicates that the UE will perform an FD operation for the specific time resource, and can not perform uplink transmission.

[0311] When the UE operates in full-duplex mode, it simultaneously performs DL reception and UL transmission. This increases throughput for both data transmission and reception and reduces latency. However, full-duplex operation can introduce self-interference (SI) that is absent in half-duplex operation (i.e., the UE's UL transmission affects its own DL reception). Furthermore, cross-link interference (CLI) may be exacerbated compared to the environment in half-duplex operation. Considering these drawbacks, the transmission and reception quality of each transmitted and received signal / channel may be degraded when the UE operates in full-duplex mode compared to the half-duplex scenario.

[0312] According to reference Figures 18 to 20 The described method enables UEs supporting HD and FD operations to perform appropriate operations based on the channel environment and service type, thereby improving the system's transmission and reception performance. Furthermore, even when time resources are scheduled or designated for FD operations, the UE performs HD operations when signals / channels with high reception reliability or priority exist in the time resources, thus minimizing the impact on signal / channel reception performance.

[0313] Figure 21 Examples of signaling procedures and operations between the base station and the UE are illustrated.

[0314] Reference Figure 21 The base station provides operation information to the UE (S211). The above applies to methods 1, 2, and... Figure 20 The operation information has already been described in the method.

[0315] The UE determines the operation (HD operation or FD operation) to be performed in each time resource based on the operation information (S212).

[0316] The UE performs HD operation in the first time resource (S213) and FD operation in the second time resource (S214).

[0317] Figure 22 The wireless device applicable to this specification is shown.

[0318] Reference Figure 22 The first wireless device 100 and the second wireless device 200 can transmit and receive radio signals via various RATs (e.g., LTE and NR).

[0319] 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.

[0320] The processor (102) receives operation information from the base station, the operation information instructing the UE to perform either a half-duplex (HD) operation or a full-duplex (FD) operation for a specific time resource, and based on the operation information, the UE performs one of the HD operation and the FD operation in the specific time resource. When scheduling the reception of a specific signal or channel in the specific time resource, even if the operation information instructs the UE to perform an FD operation for the specific time resource, the UE may still perform the reception operation for the specific signal or channel in the specific time resource, and may not perform uplink transmission. (See also...) Figures 18 to 21 The specific operations are described.

[0321] 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.

[0322] The processor (202) sends operation information to the UE instructing it to perform either a half-duplex (HD) operation or a full-duplex (FD) operation within a specific time resource, and performs one of the HD or FD operations with the UE within the specific time resource based on the operation information. (See also...) Figures 18 to 21 The specific operations are described.

[0323] 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.

[0324] 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.

[0325] That is, at least one computer-readable medium (CRM) has instructions to be executed by at least one processor to perform operations, said operations including: receiving operation information from a base station, said operation information instructing a UE to perform either half-duplex (HD) operation or full-duplex (FD) operation in a specific time resource; and, based on said operation information, performing one of said HD operation and said FD operation in said specific time resource. (Already referred to...) Figures 18 to 21 The specific operations are described.

[0326] 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.

[0327] 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.

[0328] 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.

[0329] 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.

[0330] 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.

[0331] The transmitting device can transmit one or more codewords. The encoded bits in each codeword are scrambled by the 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.

[0332] 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 encoded data. The modulator can be referred to as a modulation mapper.

[0333] 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.

[0334] 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.

[0335] Each 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.

[0336] 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.

[0337] 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.

[0338] 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.

[0339] 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.

[0340] Complex-valued modulation symbols can be mapped to one or more transport layers by layer mapper 403.

[0341] 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.

[0342] 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.

[0343] Resource block mapper 405 can assign complex-valued modulation symbols to appropriate subcarriers and multiplex complex-valued modulation symbols according to users.

[0344] 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.

[0345] The signal processing of the receiving device can be the reverse of the signal processing of the transmitting device. Specifically, the processor of the receiving 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, which are then multiplexed and demodulated according to MIMO to recover the data string intended to be transmitted by the transmitting device. The receiving device 1820 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.

[0346] Figure 25 An example of a wireless communication device according to an implementation example of this disclosure is illustrated.

[0347] 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.

[0348] 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 The processors 102 and 202 are in the middle.

[0349] 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.

[0350] 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.

[0351] 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.

[0352] 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.

[0353] 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.

[0354] Figure 26 Another example of a wireless device is shown.

[0355] 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.

[0356] 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.

[0357] Figure 27 The communication system 1 used in this specification is shown.

[0358] 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.

[0359] 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.

[0360] 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.

[0361] In addition, NR supports multiple parameter sets (or subcarrier spacing (SCS)) to support a variety of 5G services. For example, a SCS of 15 kHz can support wide-area coverage in traditional cellular bands. A SCS of 30 kHz / 60 kHz supports dense urban areas, lower latency, and wider carrier bandwidth. A SCS of 60 kHz or higher uses a bandwidth greater than 24.25 GHz to overcome phase noise.

[0362] 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 can represent "below 6 GHz" and FR2 can represent "above 6 GHz" and can also be referred to as millimeter wave (mmW).

[0363] [Table 5]

[0364] 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).

[0365] [Table 6]

[0366] 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 operation information from the base station, which instructs the UE to perform either half-duplex (HD) or full-duplex (FD) operation for a specific time resource. as well as Based on the operation information, the UE performs one of the HD operation and the FD operation in the specific time resource.

2. The method according to claim 1, wherein, Based on the operation information, the UE is instructed to perform the FD operation on some of the multiple time resources, and performs the HD operation on the remaining time resources among the multiple time resources.

3. The method according to claim 1, wherein, Based on the operation information, the UE is instructed to perform the HD operation on some of the multiple time resources, and performs the FD operation on the remaining time resources among the multiple time resources.

4. The method according to claim 1, wherein, The operation information specifies either enabling information for the UE to perform the FD operation for the specific time resource, or disabling information for the UE to perform the HD operation for the specific time resource.

5. The method according to claim 1, wherein, The operation information specifies whether to notify the UE to enable the HD operation for the specific time resource, or to notify the UE to disable the FD operation for the specific time resource.

6. The method according to claim 1, wherein, The UE performs the HD operation during a time when the operation information is not assigned to the UE.

7. The method according to claim 1, wherein, The UE performs the FD operation during the time resources when the operation information is not assigned to the UE.

8. The method according to claim 1, further comprising receiving valid time information indicating the valid duration of the operation information.

9. The method according to claim 8, wherein, The UE skips applying the operation information based on the elapsed effective duration.

10. The method according to claim 1, wherein, Based on scheduling the reception of a specific signal or a specific channel in the specific time resource, even if the operation information specifies that the UE performs the FD operation for the specific time resource, the UE also performs the reception operation of the specific signal or the specific channel in the specific time resource and skips the uplink transmission.

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, Wherein, the at least one memory stores instructions, the instructions causing the at least one processor to perform an operation based on execution by the at least one processor, the operation including: The UE receives operation information from the base station, the operation information indicating which operation, half-duplex HD or full-duplex FD, it should perform for a specific time resource; and Based on the operation information, the UE performs one of the HD operation and the FD operation in the specific time resource.

12. 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 stores instructions, the instructions causing the at least one processor to perform an operation based on execution by the at least one processor, the operation including: The user equipment (UE) receives operation information from the base station, the operation information instructing the UE to perform either half-duplex (HD) or full-duplex (FD) operation for a specific time resource; and Based on the operation information, the UE performs one of the HD operation and the FD operation in the specific time resource.

13. A computer-readable medium CRM, the CRM storing instructions, the instructions being executed by at least one processor to cause the at least one processor to perform operations, the operations including: The user equipment (UE) receives operation information from the base station, which instructs the UE to perform either half-duplex (HD) or full-duplex (FD) operation for a specific time resource. as well as Based on the operation information, the UE performs one of the HD operation and the FD operation in the specific time resource.

14. A method comprising: Send operation information to the user equipment (UE), the operation information indicating which operation the UE should perform in a specific time resource, either half-duplex (HD) operation or full-duplex (FD) operation; as well as Based on the operation information, the UE performs one of the HD operation and the FD operation in the specific time resource.

15. 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 stores instructions, the instructions causing the at least one processor to perform an operation based on execution by the at least one processor, the operation including: Send operation information to the user equipment (UE), the operation information indicating whether the UE should perform a half-duplex (HD) operation or a full-duplex (FD) operation in a specific time resource; and Based on the operation information, the UE performs one of the HD operation and the FD operation in the specific time resource.

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