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

Abstract

An operation method of a device in a wireless communication system, and the device are provided. The device receives operation information related to an operation applied to a time resource, and performs the operation in the time resource. The operation is determined on the basis of the operation information from among a half duplex (HD) operation, a subband full duplex (SBFD) operation, and a shared spectrum full duplex (SSFD) operation.

Description

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

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

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

[0003] NR can perform full duplex (FD) operation. FD operation allows simultaneous downlink reception and uplink transmission within a specific time resource. This differs from half duplex (HD) operation, which allows only downlink reception or uplink transmission within a specific time resource.

[0004] For FD operation, i) some frequency resources in a specific time resource may be allocated as downlink subbands and other frequency resources as uplink subbands, or ii) frequency resources that can be used for both downlink reception and uplink transmission may be allocated in a specific time resource.

[0005] The former may be called subband-wise full duplex (hereinafter referred to as subband full duplex or SBFD), and the latter may be called spectrum-sharing full duplex (hereinafter referred to as SSFD).

[0006] While the current standardization process primarily discusses the use of SBFD, future communication systems may also utilize SSFD. However, SSFD requires sophisticated signal processing due to the overlap between downlink and uplink frequency resources, which can significantly degrade performance in cases of significant channel interference.

[0007] In addition, when implementing SSFD, it will be necessary to consider whether the overlapping portion of downlink frequency resources and uplink frequency resources will be i) the entire frequency resources of the cell or ii) a specific portion of the entire frequency resources of the cell.

[0008] A resource setting method and device that takes these characteristics of SSFD into account are needed.

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

[0010] In one aspect, a method of operating a terminal in a wireless communication system is provided. The method comprises receiving operation information related to an operation applied to a time resource, and performing the operation on the time resource, wherein the operation is determined based on the operation information among a half duplex (HD) operation, a subband full duplex (SBFD) operation, and a shared spectrum full duplex (SSFD) operation.

[0011] In another aspect, a terminal, device, or computer-readable recording medium for executing the above method is provided.

[0012] In another aspect, a method of operating a base station in a wireless communication system and a base station using the operating method are provided.

[0013] A base station transmits operation information related to an operation applied to a time resource to a terminal, and communicates with the terminal according to the operation in the time resource, wherein the operation is determined based on the operation information among HD (half duplex) operation, SBFD (subband full duplex) operation, and SSFD (shared spectrum full duplex) operation.

[0014] According to the method according to the present disclosure, an appropriate operation among half duplex (HD) operation, SBFD operation, and SSFD operation can be used depending on circumstances such as interference, the amount of data to be transmitted and received, etc.

[0015] Additionally, it is possible to finely schedule SSFD operation resources that can be introduced to future communication systems.

[0016] Through this, the throughput and latency performance of the system can be improved.

[0017] Figure 1 illustrates a wireless communication system to which the present disclosure can be applied.

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

[0019] Figure 3 is a block diagram showing the wireless protocol structure for the control plane.

[0020] Figure 4 illustrates the system architecture of a New Generation Radio Access Network (NG-RAN) to which NR is applied.

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

[0022] Figure 6 illustrates a frame structure that can be applied in NR.

[0023] Figure 7 illustrates a slot structure.

[0024] Figure 8 illustrates a core set.

[0025] Figure 9 illustrates an example of a frame structure for a new wireless access technology.

[0026] Figure 10 illustrates the structure of a self-contained slot.

[0027] Figure 11 illustrates physical channels and general signal transmission.

[0028] Figure 12 shows examples of how to apply full duplex within a carrier.

[0029] Figure 13 shows an example in which time resources operating in HD (half duplex) and time resources operating in FD (full duplex), such as SBFD or SSFD, coexist.

[0030] Figure 14 shows examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0031] Figure 15 illustrates another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0032] Figure 16 illustrates the types of frequency resources that can configure a cell.

[0033] Figure 17 illustrates an operation method of a terminal in a wireless communication system.

[0034] Figure 18 shows an example of signaling and operation between a base station and a terminal.

[0035] Figure 19 illustrates a wireless device applicable to the present specification.

[0036] Figure 20 illustrates an example of a signal processing module structure.

[0037] Figure 21 illustrates another example of the structure of a signal processing module within a transmission device.

[0038] FIG. 22 illustrates an example of a wireless communication device according to an implementation example of the present disclosure.

[0039] Figure 23 shows an example of a processor (2000).

[0040] Figure 24 shows an example of a processor (3000).

[0041] Figure 25 illustrates another example of a wireless device.

[0042] Figure 26 illustrates another example of a wireless device to which the present specification applies.

[0043] Fig. 27 illustrates a communication system (1) applicable to this specification.

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

[0045] As used herein, a slash ( / ) or a comma can mean "and / or." For example, "A / B" can mean "A and / or B." Accordingly, "A / B" can mean "only A," "only B," or "both A and B." For example, "A, B, C" can mean "A, B, or C."

[0046] In this specification, “at least one of A and B” may mean “only A,” “only B,” or “both A and B.” Additionally, in this specification, the expressions “at least one of A or B” or “at least one of A and / or B” may be interpreted identically to “at least one of A and B.”

[0047] Additionally, in this specification, “at least one of A, B and C” can mean “only A,” “only B,” “only C,” or “any combination of A, B and C.” Additionally, “at least one of A, B or C” or “at least one of A, B and / or C” can mean “at least one of A, B and C.”

[0048] Additionally, parentheses used in this specification may mean “for example.” Specifically, when “control information (PDCCH)” is indicated, “PDCCH” may be suggested as an example of “control information.” In other words, “control information” in this specification is not limited to “PDCCH,” and “PDCCH” may be suggested as an example of “control information.” Furthermore, even when indicated as “control information (i.e., PDCCH),” “PDCCH” may be suggested as an example of “control information.”

[0049] Technical features individually described in a single drawing in this specification may be implemented individually or simultaneously.

[0050] Figure 1 illustrates a wireless communication system to which the present disclosure may be applied. This may also be referred to as an Evolved-UMTS Terrestrial Radio Access Network (E-UTRAN) or a Long Term Evolution (LTE) / LTE-A system.

[0051] E-UTRAN includes a base station (BS) 20 that provides a control plane and a user plane to a user equipment (UE) 10. The UE 10 may be fixed or mobile, and may be referred to by other terms such as a mobile station (MS), a user terminal (UT), a subscriber station (SS), a mobile terminal (MT), a wireless device, or a terminal. The base station (20) refers to a fixed station that communicates with the UE 10, and may be referred to by other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), or an access point.

[0052] Base stations (20) can be connected to each other via the X2 interface. The base station (20) is connected to an EPC (Evolved Packet Core, 30) via the S1 interface, more specifically, to an MME (Mobility Management Entity) via the S1-MME, and to an S-GW (Serving Gateway) via the S1-U.

[0053] The EPC (30) consists of an MME, an S-GW, and a P-GW (Packet Data Network-Gateway). The MME holds information about terminal access and capabilities, and this information is primarily used for terminal mobility management. The S-GW is a gateway with the E-UTRAN as its endpoint, and the P-GW is a gateway with the PDN as its endpoint.

[0054] The layers of the radio interface protocol between the terminal and the network can be divided into L1 (layer 1), L2 (layer 2), and L3 (layer 3) based on the three lower layers of the Open System Interconnection (OSI) standard model, which is widely known in communication systems. Among these, the physical layer belonging to layer 1 provides information transfer service using physical channels, and the RRC (Radio Resource Control) layer located in layer 3 controls radio resources between the terminal and the network. To this end, the RRC layer exchanges RRC messages between the terminal and the base station.

[0055] Figure 2 is a block diagram illustrating the radio protocol architecture for the user plane. Figure 3 is a block diagram illustrating the radio protocol architecture for the control plane. The user plane is a protocol stack for transmitting user data, and the control plane is a protocol stack for transmitting control signals.

[0056] Referring to Figures 2 and 3, the physical layer (PHY layer) provides information transfer services to upper layers using physical channels. The PHY layer is connected to its upper layer, the Medium Access Control (MAC) layer, through a transport channel. Data is transferred between the MAC layer and the PHY layer via the transport channel. Transport channels are classified based on how and with what characteristics data is transmitted over the wireless interface.

[0057] Data travels between different physical layers, i.e., between the physical layers of a transmitter and receiver, via a physical channel. This physical channel can be modulated using Orthogonal Frequency Division Multiplexing (OFDM) and utilizes time and frequency as radio resources.

[0058] The MAC layer's functions include mapping between logical channels and transport channels, and multiplexing / demultiplexing MAC service data units (SDUs) belonging to logical channels into transport blocks provided as physical channels on the transport channels. The MAC layer provides services to the RLC (Radio Link Control) layer through logical channels.

[0059] The functions of the RLC layer include concatenation, segmentation, and reassembly of RLC SDUs. To guarantee the various Quality of Service (QoS) required by radio bearers (RBs), the RLC layer provides three operating modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0060] The RRC (Radio Resource Control) layer is defined only in the control plane. The RRC layer is responsible for controlling logical, transport, and physical channels, including the configuration, reconfiguration, and release of radio bearers. An RB is a logical path provided by Layer 1 (PHY layer) and Layer 2 (MAC layer, RLC layer, PDCP layer) for data transmission between a terminal and the network.

[0061] The functions of the Packet Data Convergence Protocol (PDCP) layer in the user plane include the transmission of user data, header compression, and ciphering. The functions of the Packet Data Convergence Protocol (PDCP) layer in the control plane include the transmission of control plane data and encryption / integrity protection.

[0062] Establishing an RB refers to the process of defining the characteristics of the radio protocol layer and channel to provide a specific service, and setting specific parameters and operating methods for each. RBs can be further divided into two types: signaling RBs (SRBs) and data RBs (DRBs). SRBs are used as a conduit for transmitting RRC messages in the control plane, while DRBs are used as conduits for transmitting user data in the user plane.

[0063] When an RRC connection is established between the RRC layer of the terminal and the RRC layer of the E-UTRAN, the terminal is in an RRC connected state, otherwise it is in an RRC idle state.

[0064] Downlink transmission channels that transmit data from the network to the terminal include the Broadcast Channel (BCH), which transmits system information, and the downlink Shared Channel (SCH), which transmits user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services may be transmitted through the downlink SCH or a separate downlink Multicast Channel (MCH). Meanwhile, uplink transmission channels that transmit data from the terminal to the network include the Random Access Channel (RACH), which transmits initial control messages, and the uplink Shared Channel (SCH), which transmits user traffic or control messages.

[0065] Logical channels that are located above the transport channel and are mapped to the transport channel include BCCH (Broadcast Control Channel), PCCH (Paging Control Channel), CCCH (Common Control Channel), MCCH (Multicast Control Channel), and MTCH (Multicast Traffic Channel).

[0066] A physical channel consists of multiple OFDM symbols in the time domain and multiple subcarriers in the frequency domain. A single subframe consists of multiple OFDM symbols in the time domain. A resource block is a resource allocation unit and consists of multiple OFDM symbols and multiple subcarriers. Additionally, each subframe can use specific subcarriers of specific OFDM symbols (e.g., the first OFDM symbol) of the subframe for the Physical Downlink Control Channel (PDCCH), i.e., the L1 / L2 control channel. A Transmission Time Interval (TTI) is a unit time for subframe transmission.

[0067] Below, we describe new radio access technology (new RAT, NR).

[0068] As more and more communication devices demand greater communication capacity, the need for improved mobile broadband communications over existing radio access technology (RAT) is emerging. Furthermore, massive Machine Type Communications (MTC), which connects numerous devices and objects to provide diverse services anytime, anywhere, is also a key issue to be considered in next-generation communications. Furthermore, communication system design that considers reliability and latency-sensitive services / terminals is being discussed. The introduction of next-generation radio access technologies that take enhanced mobile broadband communications, massive MTC, and URLLC (Ultra-Reliable and Low Latency Communication) into account is being discussed. For convenience, these technologies are referred to herein as new RAT or NR.

[0069] Figure 4 illustrates the system architecture of a New Generation Radio Access Network (NG-RAN) to which NR is applied.

[0070] Referring to FIG. 4, the NG-RAN may include gNBs and / or eNBs that provide user plane and control plane protocol termination to the UE. FIG. 4 illustrates a case where only gNBs are included. The gNBs (eNBs) are connected to each other via Xn interfaces. The gNBs and eNBs are connected to the 5th generation core network (5G Core Network: 5GC) via the NG interface. More specifically, they are connected to the access and mobility management function (AMF) via the NG-C interface, and to the user plane function (UPF) via the NG-U interface.

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

[0072] Referring to FIG. 5, the gNB can provide functions such as inter-cell radio resource management (Inter Cell RRM), radio bearer management (RB control), connection mobility control (Connection Mobility Control), radio admission control (Radio Admission Control), measurement configuration and provision, and dynamic resource allocation. The AMF can provide functions such as NAS security and idle state mobility processing. The UPF can provide functions such as mobility anchoring and PDU processing. The SMF (Session Management Function) can provide functions such as terminal IP address allocation and PDU session control.

[0073] Figure 6 illustrates a frame structure that can be applied in NR.

[0074] Referring to FIG. 6, a radio frame (hereinafter abbreviated as a frame) can be used for uplink and downlink transmission in NR. A frame has a length of 10 ms and can be defined as two 5 ms half-frames (Half-Frames, HF). A half-frame can be defined as five 1 ms sub-frames (Subframes, SF). A sub-frame can be divided into one or more slots, and the number of slots in a sub-frame depends on the Subcarrier Spacing (SCS). Each slot contains 12 or 14 OFDM (A) symbols depending on the CP (cyclic prefix). When a normal CP is used, each slot contains 14 symbols. When an extended CP is used, each slot contains 12 symbols. Here, the symbols can include an OFDM symbol (or a CP-OFDM symbol), an SC-FDMA symbol (or a DFT-s-OFDM symbol).

[0075] Table 1 below illustrates the subcarrier spacing configuration (also referred to as subcarrier spacing configuration) μ.

[0076] [Table 1]

[0077]

[0078] Table 2 below shows the number of slots (N) in a frame according to the subcarrier spacing setting μ. frame,μ slot ), number of slots in a subframe (N subframe,μ slot ), number of symbols in the slot (N slot symb ) are examples.

[0079] [Table 2]

[0080]

[0081] In Fig. 6, examples are given for μ=0, 1, 2, and 3.

[0082] Table 2-1 below illustrates that when extended CP is used, the number of symbols per slot, the number of slots per frame, and the number of slots per subframe change depending on the SCS.

[0083] [Table 2-1]

[0084]

[0085] In an NR system, OFDM(A) numerologies (e.g., SCS, CP length, etc.) may be set differently between multiple cells that are merged into a single terminal. Accordingly, the (absolute time) interval of a time resource (e.g., SF, slot, or TTI) (conveniently referred to as TU (Time Unit)) consisting of the same number of symbols may be set differently between the merged cells.

[0086] Figure 7 illustrates a slot structure.

[0087] A slot can contain multiple symbols in the time domain. For example, in the case of a normal CP, one slot can contain 14 symbols (or 7 symbols), but in the case of an extended CP, one slot can contain 12 symbols (or 6 symbols). A carrier can contain multiple subcarriers in the frequency domain. A Resource Block (RB) can be defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A Bandwidth Part (BWP) can be defined as multiple consecutive (P)RBs in the frequency domain, and can correspond to a single numerology (e.g., SCS, CP length, etc.). A carrier can contain up to N (e.g., 5) BWPs. Data communication is performed through activated BWPs, and only one BWP can be activated for a single terminal. In the resource grid, each element is referred to as a Resource Element (RE), to which one complex symbol can be mapped.

[0088] A PDCCH (physical downlink control channel) may be composed of one or more CCEs (control channel elements) as shown in Table 3 below.

[0089] [Table 3]

[0090]

[0091] That is, the PDCCH can be transmitted through a resource consisting of 1, 2, 4, 8, or 16 CCEs. Here, the CCEs are composed of 6 REGs (resource element groups), and one REG consists of one resource block in the frequency domain and one OFDM (orthogonal frequency division multiplexing) symbol in the time domain.

[0092] Monitoring refers to decoding each PDCCH candidate according to the DCI (downlink control information) format. The terminal monitors a set of PDCCH candidates in one or more core sets (CORESETs, described below) on the active DL BWP of each activated serving cell for which PDCCH monitoring is configured, according to the corresponding search space set.

[0093] In NR, a new unit called a control resource set (CORESET) can be introduced. A terminal can receive PDCCHs in a CORESET.

[0094] Figure 8 illustrates a core set.

[0095] Referring to Figure 8, the coreset is N in the frequency domain. CORESET RB It consists of N resource blocks and is in the time domain. CORESET symb ∈ {1, 2, 3} symbols. NCORESET RB , N CORESET symb can be provided by the base station via upper layer signals. As illustrated in Fig. 8, a core set may include multiple CCEs (or REGs).

[0096] A terminal may attempt PDCCH detection in units of 1, 2, 4, 8, or 16 CCEs within a core set. One or more CCEs for which PDCCH detection can be attempted may be referred to as PDCCH candidates.

[0097] A terminal can be configured with multiple core sets.

[0098] In conventional wireless communication systems (e.g., LTE / LTE-A), the control domain spans the entire system bandwidth used by the base station. Except for some terminals that support only narrow bandwidths (e.g., eMTC / NB-IoT terminals), all terminals must be able to receive radio signals across the entire system bandwidth of the base station to properly receive / decode the control information transmitted by the base station.

[0099] In contrast, NR introduces the aforementioned core set. A core set is a radio resource for control information that a terminal must receive. It can utilize only a portion of the system bandwidth in the frequency domain, rather than the entire bandwidth. Furthermore, it can utilize only a portion of the symbols within a slot in the time domain. The base station can assign a core set to each terminal and transmit control information through the assigned core set. In NR, a terminal can receive control information from the base station without necessarily receiving the entire system bandwidth.

[0100] The core set may include a terminal-specific core set for transmitting terminal-specific control information and a common core set for transmitting control information common to all terminals.

[0101] Meanwhile, in NR, depending on the application field, high reliability may be required, and in such a situation, the target BLER (block error rate) for downlink control information (DCI) transmitted through a downlink control channel (e.g., physical downlink control channel: PDCCH) may be significantly lower than in the prior art. One example of a method for satisfying such a requirement requiring high reliability is to reduce the amount of content included in the DCI and / or increase the amount of resources used when transmitting the DCI. In this case, the resources may include at least one of time domain resources, frequency domain resources, code domain resources, and spatial domain resources.

[0102] The following technologies / features can be applied in NR:

[0103] Self-contained subframe structure

[0104] Figure 9 illustrates an example of a frame structure for a new wireless access technology.

[0105] In NR, for the purpose of minimizing latency, a structure in which a control channel and a data channel are time-division multiplexed (TDM) within one TTI, as shown in Fig. 9, can be considered as one of the frame structures.

[0106] In Fig. 9, the hatched area represents a downlink control area, and the black area represents an uplink control area. Unmarked areas can be used for downlink data (DL data) transmission or uplink data (UL data) transmission. A characteristic of this structure is that downlink (DL) transmission and uplink (UL) transmission are sequentially performed within a single subframe, so that DL data can be sent and UL ACK / NACK (Acknowledgement / Not-acknowledgement) can also be received within the subframe. As a result, the time required for data retransmission when a data transmission error occurs is reduced, thereby minimizing the latency of the final data transmission.

[0107] In these data and control TDMed subframe structures, a time gap is required for the base station and terminal to transition from transmission mode to reception mode or from reception mode to transmission mode. To this end, some OFDM symbols at the transition point from DL to UL in the self-contained subframe structure can be set as a guard period (GP).

[0108] Figure 10 illustrates the structure of a self-contained slot.

[0109] In an NR system, a single slot may contain a DL control channel, DL or UL data, and a UL control channel. For example, the first N symbols in a slot may be used to transmit a DL control channel (hereinafter, referred to as a DL control region), and the last M symbols in the slot may be used to transmit a UL control channel (hereinafter, referred to as a UL control region). N and M are each integers greater than or equal to 0. A resource region (hereinafter, referred to as a data region) between the DL control region and the UL control region may be used for DL ​​data transmission or UL data transmission. As an example, the following configuration may be considered. Each section is listed in chronological order.

[0110] 1. DL only configuration

[0111] 2. UL only configuration

[0112] 3. Mixed UL-DL configuration

[0113] - DL area + GP (Guard Period) + UL control area

[0114] - DL control area + GP + UL area

[0115] DL area: (i) DL data area, (ii) DL control area + DL data area

[0116] UL domain: (i) UL data domain, (ii) UL data domain + UL control domain

[0117] In the DL control region, a PDCCH can be transmitted, and in the DL data region, a PDSCH (physical downlink shared channel) can be transmitted. In the UL control region, a PUCCH (physical uplink control channel) can be transmitted, and in the UL data region, a PUSCH (physical uplink shared channel) can be transmitted. In the PDCCH, downlink control information (DCI), such as DL data scheduling information and UL data scheduling information, can be transmitted. In the PUCCH, uplink control information (UCI), such as ACK / NACK (Positive Acknowledgement / Negative Acknowledgement) information for DL ​​data, CSI (Channel State Information) information, and SR (Scheduling Request), can be transmitted. GP provides a time gap when a base station and a terminal switch from transmission mode to reception mode or from reception mode to transmission mode. Some symbols at the time of switching from DL to UL within a subframe can be set as GP.

[0118] Analog Beamforming #1

[0119] In millimeter wave (mmW), the wavelength is shortened, allowing for the installation of multiple antenna elements in the same area. That is, in the 30 GHz band, the wavelength is 1 cm, allowing for a total of 100 antenna elements to be installed in a two-dimensional array at 0.5 wavelength (lambda) intervals on a 5 x 5 cm panel. Therefore, in mmW, multiple antenna elements are used to increase beamforming (BF) gain, thereby increasing coverage or throughput.

[0120] In this case, if there is a transceiver unit (TXRU) that allows transmission power and phase control for each antenna element, independent beamforming is possible for each frequency resource. However, it is not practical in terms of cost to install a TXRU for all 100 or so antenna elements. Therefore, a method of mapping multiple antenna elements to a single TXRU and controlling the direction of the beam with an analog phase shifter is being considered. This analog beamforming method has the disadvantage of being unable to perform frequency-selective beamforming because it can only create one beam direction for the entire band.

[0121] Hybrid beamforming (hybrid BF), which has B TXRUs, which is less than Q antenna elements, can be considered as an intermediate form between digital beamforming (Digital BF) and analog beamforming (Analog BF). In this case, depending on the connection method of the B TXRUs and Q antenna elements, the number of beam directions that can be transmitted simultaneously is limited to B or fewer.

[0122] Analog Beamforming #2

[0123] In NR systems, when multiple antennas are used, a hybrid beamforming technique that combines digital beamforming and analog beamforming is emerging. In this case, analog beamforming (or RF beamforming) performs precoding (or combining) at the RF end, which has the advantage of achieving performance close to digital beamforming while reducing the number of RF chains and D / A (or A / D) converters. For convenience, the hybrid beamforming structure can be expressed as N TXRUs and M physical antennas. Then, the digital beamforming for L data layers to be transmitted from the transmitter can be expressed as an N by L matrix, and the N converted digital signals are converted into analog signals through the TXRU, and then analog beamforming expressed as an M by N matrix is ​​applied.

[0124] System information of an NR system can be transmitted in a broadcasting manner. At this time, analog beams belonging to different antenna panels within one symbol can be transmitted simultaneously, and a method of introducing a beam reference signal (BRS), which is a reference signal (RS) transmitted by applying a single analog beam (corresponding to a specific antenna panel) to measure a channel for each analog beam, is being discussed. The BRS can be defined for multiple antenna ports, and each antenna port of the BRS can correspond to a single analog beam. At this time, unlike the BRS, a synchronization signal or xPBCH can be transmitted by applying all analog beams within an analog beam group so that any terminal can receive it well.

[0125] In NR, a synchronization signal block (SSB, or may be referred to as a synchronization signal and physical broadcast channel (SS / PBCH) in the time domain) may be composed of four OFDM symbols numbered in ascending order from 0 to 3 within the synchronization signal block, and a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a PBCH associated with a demodulation reference signal (DMRS) may be mapped to the symbols. As described above, the synchronization signal block may also be referred to as an SS / PBCH block.

[0126] In NR, multiple synchronization signal blocks can be transmitted at different times, and SSB can be used to perform initial access (IA), serving cell measurement, etc. Therefore, when the transmission timing and resources overlap with other signals, it is desirable to transmit SSB preferentially. To achieve this, the network can broadcast SSB transmission timing and resource information or indicate it through UE-specific RRC signaling.

[0127] NR can perform beam-based transmission and reception operations. If the reception performance of the current serving beam degrades, a process called beam failure recovery (BFR) can be used to find a new beam.

[0128] Since BFR is not a process for declaring an error / failure in the link between the network and the terminal, it can be assumed that the connection with the current serving cell is maintained even when the BFR process is performed. During the BFR process, measurements are performed on different beams set by the network (a beam can be expressed as a CSI-RS port or an SSB (synchronization signal block) index, etc.) and the best beam for the terminal is selected. The terminal can proceed with the BFR process by performing the RACH process associated with the beam with the best measurement result.

[0129] Now, we will describe the Transmission Configuration Indicator (TCI) state. The TCI state can be set for each core set of the control channel, and parameters for determining the terminal's receive (Rx) beam can be determined based on the TCI state.

[0130] For each downlink bandwidth portion (DL BWP) of a serving cell, a terminal may be configured with up to three core sets. Additionally, for each core set, the terminal may be provided with the following information:

[0131] 1) Coreset index p (e.g., one from 0 to 11, where the index of each coreset can be uniquely determined among the BWPs of a serving cell),

[0132] 2) PDCCH DM-RS scrambling sequence initialization value,

[0133] 3) Interval in the time domain of the core set (can be given in symbol units),

[0134] 4) A set of resource blocks,

[0135] 5) CCE-to-REG mapping parameters,

[0136] 6) Antenna port quasi co-location (QCL) information indicating quasi co-location (QCL) information of DM-RS antenna ports for PDCCH reception in each core set (from a set of antenna port quasi co-locations provided by a higher layer parameter called 'TCI-State');

[0137] 7) Indicating the presence or absence of a transmission configuration indication (TCI) field for a specific DCI format transmitted by PDCCH in the core set, etc.

[0138] Let's explain QCL. If the characteristics of the channel through which a symbol on one antenna port is transmitted can be inferred from the characteristics of the channel through which a symbol on another antenna port is transmitted, then the two antenna ports are said to be in quasi-co-location (QCL). For example, if two signals (A and B) are transmitted from the same transmit antenna array with identical / similar spatial filters applied, the two signals may experience identical / similar channel conditions. From the receiver's perspective, if one of the two signals is received, the channel characteristics of the received signal can be used to detect the other signal.

[0139] In this sense, the fact that A and B are QCL may mean that A and B experienced similar channel conditions, and thus, the channel information estimated to detect A is also useful for detecting B. Here, the channel conditions may be defined by, for example, Doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters, etc.

[0140] The 'TCI-State' parameter associates one or two downlink reference signals with a corresponding QCL type (there are QCL types A, B, C, and D, see Table 4).

[0141] [Table 4]

[0142]

[0143] Each 'TCI-State' may include parameters for establishing a quasi-colocation (QCL) relationship between one or two downlink reference signals and a DM-RS port of a PDSCH (or PDCCH), or a CSI-RS port of a CSI-RS resource.

[0144] Meanwhile, in each DL BWP configured for a terminal in a serving cell, the terminal may be provided with up to 10 search space sets. For each search space set, the terminal may be provided with at least one of the following pieces of information.

[0145] 1) Search space set index s (0≤s<40), 2) Association between core set P and search space set s, 3) PDCCH monitoring period and PDCCH monitoring offset (slot unit), 4) PDCCH monitoring pattern within a slot (e.g., indicating the first symbol of the core set within a slot for PDCCH monitoring), 5) Number of slots in which search space set s exists, 6) Number of PDCCH candidates per CCE aggregation level, 7) Information indicating whether search space set s is CSS or USS, etc.

[0146] In NR, core set #0 can be configured by PBCH (or terminal-specific signaling for handover, PSCell configuration, or BWP configuration). The search space (SS) set #0 configured by PBCH can have different monitoring offsets (e.g., slot offset, symbol offset) for each associated SSB. This may be necessary to minimize the search space occasions that the terminal must monitor. Alternatively, it may also be necessary to provide a beam sweeping control / data area that can transmit control / data for each beam so that communication with the terminal can be continuously performed in a situation where the best beam of the terminal dynamically changes.

[0147] Figure 11 illustrates physical channels and general signal transmission.

[0148] Referring to Figure 11, in a wireless communication system, a terminal receives information from a base station via the downlink (DL), and the terminal transmits information to the base station via the uplink (UL). The information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels exist depending on the type and purpose of the information they transmit and receive.

[0149] When a terminal is powered on again from a powered-off state or newly enters a cell, it performs an initial cell search operation, such as synchronizing with the base station (S11). To this end, the terminal receives the PSCH (Primary Synchronization Channel) and SSCH (Secondary Synchronization Channel) from the base station to synchronize with the base station and obtain information such as the cell ID (cell identity). In addition, the terminal can obtain broadcast information within the cell by receiving the PBCH (Physical Broadcast Channel) from the base station. In addition, the terminal can receive the DL RS (Downlink Reference Signal) during the initial cell search phase to check the downlink channel status.

[0150] (Initial) cell search can be defined as a procedure in which a terminal acquires time and frequency synchronization with a cell and detects the cell ID of the cell. Cell search can be based on the primary synchronization signal and secondary synchronization signal of the cell, and the PBCH DMRS.

[0151] A terminal that has completed initial cell search can obtain more specific system information by receiving a PDCCH (Physical Downlink Control Channel) and a corresponding PDSCH (Physical Downlink Control Channel) (S12).

[0152] Thereafter, the terminal may perform a random access procedure (Random Access Procedure) to complete connection to the base station (S13-S16). Specifically, the terminal may transmit a preamble through a Physical Random Access Channel (PRACH) (S13) and receive a Random Access Response (RAR) for the preamble through a PDCCH and a corresponding PDSCH (S14). Thereafter, the terminal may transmit a Physical Uplink Shared Channel (PUSCH) using scheduling information in the RAR (S15) and perform a contention resolution procedure (Contention Resolution Procedure) such as a PDCCH and a corresponding PDSCH (which may be considered a process of receiving a contention resolution message) (S16).

[0153] A terminal that has performed the above-described procedure can then perform PDCCH / PDSCH reception (S17) and PUSCH / PUCCH (Physical Uplink Control Channel) transmission (S18) as general uplink / downlink signal transmission procedures. Control information that the terminal transmits to the base station is referred to as UCI (Uplink Control Information). UCI includes HARQ ACK / NACK (Hybrid Automatic Repeat and reQuest Acknowledgement / Negative-ACK), SR (Scheduling Request), CSI (Channel State Information), etc. CSI includes CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indication), etc. UCI is generally transmitted through PUCCH, but can be transmitted through PUSCH when control information and data must be transmitted simultaneously. In addition, the terminal can aperiodically transmit UCI through PUSCH according to a request / instruction of the network.

[0154] To enable reasonable battery consumption when BA (bandwidth adaptation) is configured, only one uplink BWP and one downlink BWP, or only one downlink / uplink BWP pair, for each uplink carrier can be activated at a time within an active serving cell, while all other BWPs configured in the UE are deactivated. In deactivated BWPs, the UE does not monitor the PDCCH and does not transmit on the PUCCH, PRACH, and UL-SCH.

[0155] For BA, the receive and transmit bandwidth of the terminal need not be as wide as the cell bandwidth and can be adjusted: the width can be commanded to change (e.g., shrinking during periods of low activity to save power), the location in the frequency domain can be moved (e.g., to increase scheduling flexibility), and the subcarrier spacing can be commanded to change (e.g., to allow different services). A subset of the total cell bandwidth of a cell is referred to as a bandwidth part (BWP), and a BA is obtained by setting BWP(s) to the terminal and notifying the terminal which of the set BWPs is currently active. Once a BA is set, the terminal only needs to monitor the PDCCH on one active BWP. That is, there is no need to monitor the PDCCH on the entire downlink frequency of the cell. A BWP inactive timer (independent of the DRX inactive timer described above) is used to switch an active BWP to a default BWP: the timer is restarted upon successful PDCCH decoding, and a switch to the default BWP occurs when the timer expires.

[0156] Below, we describe the integrated access and backhaul link (IAB). For convenience, the proposed approach is based on the new RAT (NR) system. However, the scope of the proposed approach can be expanded to include other systems, such as 3GPP LTE / LTE-A systems, in addition to NR systems.

[0157] One potential technology that aims to enable future cellular network deployment scenarios and applications is support for wireless backhaul and relay links, enabling flexible and very dense deployment of NR cells without the need to proportionally densify the transport network.

[0158] The expected availability of greater bandwidth in NR compared to LTE (e.g., in the mmWave spectrum), along with the native deployment of massive MIMO or multi-beam systems, creates opportunities for the development and deployment of integrated access and backhaul links. This allows for easier deployment of dense networks of self-backhauled NR cells in a more integrated manner by establishing multiple control and data channels / procedures defined to provide connectivity or access to terminals. Such systems are referred to as integrated access and backhaul links (IAB).

[0159] In this disclosure, the following are defined:

[0160] - AC(x): Access link between node(x) and terminal(s).

[0161] - BH(xy): Backhaul link between node(x) and node(y).

[0162] At this time, the node may refer to a DgNB (donor gNB) or a relay node (RN). Here, the DgNB or donor node may be a gNB that provides a function to support backhaul for IAB nodes.

[0163] When relay node 1 and relay node 2 exist, and relay node 1 is connected to relay node 2 via a backhaul link and relays data transmitted and received to relay node 2, relay node 1 is called the parent node of relay node 2, and relay node 2 is called the child node of relay node 1.

[0164] Technical features individually described in a single drawing in this specification may be implemented individually or simultaneously.

[0165] The following drawings are intended to illustrate specific examples of the present specification. The names of specific devices and the names of specific signals / messages / fields depicted in the drawings are provided for illustrative purposes only, and the technical features of this specification are not limited to the specific names used in the drawings.

[0166] Now, we describe full duplex operation.

[0167] 5G is giving rise to new service types, such as extended reality (XR), AI-based services, and self-driving cars. These services feature dynamic traffic in both downlink (DL) and uplink (UL) directions, and require low latency for traffic transmission (e.g., packets). 5G services will experience explosive growth in traffic to support these diverse new use cases.

[0168] Existing semi-static or dynamic TDD UL / DL configurations suffer from transmission delays and interference between operators. Existing FDD schemes also face limitations in efficient frequency resource utilization in the DL / UL directions. Therefore, the introduction of full-duplex operation within a single carrier is being discussed to achieve low latency and efficient resource utilization in NR.

[0169] Figure 12 shows examples of how to apply full duplex within a carrier.

[0170] Referring to FIG. 12, in the full duplex method, subband-wise full duplex (hereinafter, referred to as subband full duplex or SBFD) as in (a) of FIG. 12 and spectrum-sharing full duplex (hereinafter, referred to as SSFD) as in (b) of FIG. 12 can be considered.

[0171] In the case of SBFD, DL and UL transmission and reception can be performed through different frequency resources within the same time resource within the same carrier (e.g., carrier #0). In other words, different frequency resources can be used for DL ​​and UL for the same time resource.

[0172] In the case of SSFD, transmission and reception of DL and UL can be performed through the same frequency resources or overlapping frequency resources in the same time resource within the same carrier (e.g., carrier #0). That is, the same or overlapping frequency resources can be used for DL ​​and UL for the same time resource.

[0173] This full-duplex (FD) operation can also be combined with existing half-duplex (HD) operation. For example, among the time resources used for existing half-duplex-based TDD operation, some of the time resources can be used for full-duplex operation. For example, SBFD or SSFD operation can be performed on the time resources performing full-duplex operation.

[0174] Figure 13 shows examples where time resources operating in HD (half duplex) and time resources operating in FD (full duplex), such as SBFD or SSFD, coexist.

[0175] In (a) of Fig. 13, some time resources operating in SBFD are indicated as SBFD, and time resources operating in half-duplex are indicated as HD. In (b) of Fig. 13, some time resources operating in SSFD are indicated as SSFD, and time resources operating in half-duplex are indicated as HD. The unit of the time resource may be, for example, a slot or a symbol. That is, (a) and (b) of Fig. 13 can be interpreted as examples in which there are 5 slots or 5 symbols on the time axis.

[0176] In a time resource operating under SBFD, some frequency resources are used as DL resources, while others are used as UL resources. Between the DL and UL frequency resources, there may be a guard subband that is unused for both DL and UL, leaving it empty. The guard subband may also be referred to by other terms, such as guard frequency resources or guard subcarrier(s).

[0177] In a time resource operating in SSFD, the entire frequency resource can be used for both DL and UL. Alternatively, to reduce the impact of interference (which may be referred to as adjacent carrier interference (ACI)) from other adjacent carriers, some frequency resources at one or both ends of the carrier can be left unused for DL ​​and / or UL. That is, one or both ends of the carrier can be used as guard bands (guard subbands) that are not used for both DL and UL. Alternatively, to reduce the impact of ACI on UL reception, one or both ends of the carrier can be used only for DL ​​transmission.

[0178] In this disclosure, slot resources operating in half-duplex are referred to as HD slots, and slot resources operating in SBFD and SSFD are referred to as SBFD slots and SSFD slots, respectively. Additionally, SSFD slots and SSFD slots may be collectively referred to as FD slots.

[0179] In the present disclosure, in a time resource operating as FD, a frequency resource operating as DL among the entire frequency resources is conveniently called a DL subband, and a frequency resource operating as UL may also be called a UL subband.

[0180] In full-duplex operation, both the base station and the terminal can perform full-duplex operation. That is, both the base station and the terminal can simultaneously transmit and receive DL and UL using the same or different frequency resources in the same time resource.

[0181] Alternatively, only the base station can perform full-duplex operation, while the terminals can perform half-duplex operation. The base station can simultaneously transmit and receive DL and UL signals using the same or different frequency resources in the same time resource, but the terminals perform only DL reception or UL transmission in specific time resources. In this case, the base station performs full-duplex operation by performing DL transmission and UL reception with different terminals at the same time.

[0182] The present disclosure assumes that the base station performs / supports full duplex operation, while the terminal performs / supports half duplex operation. However, the present disclosure can also be applied to cases where both the base station and the terminal perform / support full duplex operation.

[0183] When operating in intra-carrier full duplex, it is also possible to fallback to TDD operation in time resources operating in SBFD.

[0184] In the following, the term "network" may be interpreted as a base station or CU / DU. Furthermore, the term "terminal (UE)" may be interpreted as a mobile terminal (MT) of an IAB node or an MT of a network-controlled repeater (NCR-MT).

[0185] A. Characteristics of DL / UL time / frequency resources for SBFD and SSFD operations

[0186] A cell (base station) can perform both DL transmission and UL reception in the same time resource in a FD manner, such as SBFD or SSFD. For example, the base station can perform HD operation in the first time resource and FD operation in the second time resource (which may be any time resource other than the first time resource).

[0187] In the first time resource performing the HD operation, the DL operation or the UL operation is performed across the entire frequency resources that constitute the entire system bandwidth. Within the first time resource performing the HD operation, the network performs the DL operation through the 1-1 time resource and the UL operation through the 1-2 time resource. At this time, the 1-1 time resource and the 1-2 time resource do not overlap each other.

[0188] In the second time resource performing the FD operation, the network performs the DL operation through all or part of the frequency resources (first frequency resources) among the frequency resources constituting the system band of the cell, and performs the UL operation through all or part of the frequency resources (second frequency resources).

[0189] Figure 14 shows examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0190] Referring to (a) of FIG. 14, in the first time resource (indicated by A), the device operates in half-duplex. In the second time resource (indicated by B), the device may operate in, for example, SBFD. The resource indicated by DL in the first time resource corresponds to the aforementioned 1-1 time resource, and the resource indicated by UL corresponds to the aforementioned 1-2 time resource.

[0191] Referring to (b) of Fig. 14, the frequency resource operating as DL in the second time resource corresponds to the first frequency resource described above, and the frequency resource operating as UL corresponds to the second frequency resource described above.

[0192] Figure 15 illustrates another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource.

[0193] Referring to (a) of FIG. 15, in the first time resource (indicated by A), the device operates in half-duplex mode. In the second time resource (indicated by B), for example, it may operate in SSFD mode. The resource indicated by DL in the first time resource corresponds to the aforementioned 1-1 time resource, and the resource indicated by UL corresponds to the aforementioned 1-2 time resource.

[0194] Referring to (b) of Fig. 15, the frequency resources operating as DL and DL+UL in the second time resource correspond to the first frequency resource described above, and the frequency resources operating as DL+UL correspond to the second frequency resource described above.

[0195] The first frequency resource and / or the second frequency resource may have all or some of the following characteristics:

[0196] 1) When performing SBFD operation, the first frequency resource and the second frequency resource do not overlap with each other. This is to ensure that DL and UL operations are performed through different frequency resources. At this time, there may be frequency resources that do not correspond to either the first or second frequency resources, and such frequency resources are called guard subbands or guard frequency resources. Such guard frequency resources may be necessary to reduce interference between DL transmission and UL reception. The guard frequency resource may be located between the first and second frequency resources.

[0197] 2) When performing SSFD operation, the first frequency resource and the second frequency resource may overlap. In this case, there may be frequency resources that do not correspond to either the first frequency resource or the second frequency resource, and such frequency resources are called guard subbands or guard frequency resources. Such guard frequency resources may be necessary to reduce interference between DL transmissions on adjacent carriers and / or between DL transmissions and UL reception on adjacent carriers.

[0198] 3) When performing the SBFD operation, the second frequency resource may be configured with continuous frequency resources, and the first frequency resource may be configured with non-contiguous frequency resources. In this case, the first frequency resource may be configured with multiple (for example, two) non-contiguous sets, and each set may be configured with continuous frequency resources. This is to reduce interference of DL transmission on adjacent carriers to UL resources by positioning the second frequency resource used for UL at the center of the frequency resources constituting the cell. Conversely, the first frequency resource may be configured with continuous frequency resources, and the second frequency resource may be configured with non-contiguous frequency resources. In this case, the second frequency resource may be configured with multiple (for example, two) non-contiguous sets, and each set may be configured with continuous frequency resources. This is to reduce interference of DL transmission on UL resources on adjacent carriers by positioning the second frequency resource used for DL ​​at the center of the frequency resources constituting the cell.

[0199] 4) When performing SSFD operation, the second frequency resource may be configured with a portion of the frequency resources of the first frequency resource. In this case, the second frequency resource may be configured with X PRBs (physical resource blocks) less than the first frequency resource for one or both edge portions of the carrier. This is to reduce interference between DL transmission on adjacent carriers and UL reception.

[0200] The network can determine / judge the 'first time resource' and 'second time resource', and the 'first frequency resource' and 'second frequency resource' as described above, and provide all or part of the corresponding information to the terminal.

[0201] The terminal can determine information about time resources (hereinafter referred to as SBFD symbols) that operate as SBFD (and / or SSFD) for the FD (SBFD and / or SSFD) operation of the cell. For this purpose, information about SBFD symbols can be set to the terminal from the network.

[0202] When a specific time resource is configured as a time resource operating in SBFD (SBFD symbol), both DL and UL resources can exist in that time resource. In this case, if there is no UL signal to be received by the base station in that time resource, the base station can only perform DL transmission. In SBFD resources, DL transmission occurs only within the DL subband. Therefore, even if there is no UL signal transmitted in the UL subband, DL transmission can only be performed within the DL subband.

[0203] In this case, even if a specific time resource is determined to be an SBFD symbol, if there is no UL transmission to be received by the base station, it may be considered to perform DL transmission not only on the DL subband but also outside the DL subband to improve DL throughput. In other words, it may be considered to perform DL transmission over the entire bandwidth.

[0204] That is, a fallback to TDD operation that performs DL or UL operation over the entire band, rather than SBFD operation over DL / UL subbands, can be considered for resources judged as SBFD symbols.

[0205] In resources not identified by the SBFD symbol, the terminal can perform TDD operation (half-duplex operation) like a conventional terminal. That is, it can perform only DL or UL operation using the entire frequency resources of the cell.

[0206] In the case of fallback operation, transitions between SBFD and non-SBFD time resources may occur more frequently than in the case of non-fallback operation. This may lead to increased operational complexity of the base station and terminal, as well as increased overhead due to the transition period.

[0207] In the present disclosure, a time resource operating in SBFD or an SBFD symbol may mean a 'second time resource'. In addition, in the present disclosure, a time resource operating in TDD, a time resource operating in HD, a TDD symbol, or an HD symbol may mean a 'first time resource'.

[0208] With respect to SBFD, the DL subband mentioned in this disclosure may refer to the 'first frequency resource'. In addition, the UL subband mentioned in this disclosure may refer to the 'second frequency resource'.

[0209] The present disclosure assumes SBFD operation, where a cell performs DL and UL simultaneously using different frequency resources (e.g., subbands) in the same time resource. However, the contents of the present disclosure can also be applied to a cell performing SSFD operation.

[0210] The present disclosure may include the following terminal operations.

[0211] When a terminal performs DL reception in an SBFD symbol, i) the terminal can perform DL reception using frequency resources within the DL subband. The terminal can perform DL reception using frequency resources within the DL subband within the DL BWP. ii) the terminal does not perform DL reception on frequency resources other than the DL subband. The terminal does not perform DL reception using frequency resources other than the DL subband within the DL BWP.

[0212] When a terminal performs UL transmission in an SBFD symbol, i) the terminal can perform UL transmission using frequency resources within the UL subband. The terminal can perform UL transmission using frequency resources within the UL subband within the UL BWP. ii) the terminal does not perform UL transmission on frequency resources other than the UL subband. The terminal does not perform UL transmission using frequency resources other than the UL subband within the UL BWP.

[0213] Typically, a UE can perform DL reception within a DL subband and UL transmission within a UL subband in the time resources where the UE determines that the cell operates in SBFD. However, if the gNB (base station) performs only DL transmission or UL reception in the time resources where the UE determines that the cell operates in SBFD, or if necessary, it may consider performing DL transmission or UL reception (capable of receiving DL or UL scheduling) over the entire band.

[0214] In existing NR TDD carriers, a base station performs only one operation, either downlink or uplink, in a specific time resource. In this case, the base station always operates in downlink in the time resource where SSB is transmitted.

[0215] For terminals operating in existing TDD, the following assumptions are made regarding the symbols in which SSB is transmitted.

[0216] 1) SS / PBCH transmission symbols cannot be configured for uplink by TDD configuration (e.g., TDD-UL-DL-ConfigCommon and / or TDD-UL-DL-ConfigDedicated).

[0217] 2) SS / PBCH transmission symbols cannot be set to uplink by SFI (slot format indication) of DCI format 2_0.

[0218] 3) When SS / PBCH is transmitted in a symbol configured as flexible by TDD configuration (e.g., TDD-UL-DL-ConfigCommon and / or TDD-UL-DL-ConfigDedicated), if the uplink transmission of the terminal overlaps with the SS / PBCH symbol, the uplink transmission is not performed. For example, if the transmission of SRS overlaps with the SS / PBCH symbol in the flexible symbol, SRS transmission is not performed in the overlapped symbol(s).

[0219] Meanwhile, in FD environments such as SBFD and SSFD, both DL and UL resources can exist within the same time frame from the cell (network, base station) perspective. Therefore, the base station can simultaneously transmit downlink and receive uplink data.

[0220] Therefore, even if SS / PBCH is transmitted in a time resource where the cell performs FD operation, the base station can perform reception of uplink transmission of the terminal while transmitting SS / PBCH.

[0221] Meanwhile, according to the current standard, a terminal cannot perform uplink transmission in symbol resources where SS / PBCH is transmitted by the network. In other words, a terminal cannot perform FD operation in SS / PBCH transmission time resources.

[0222] When a specific time resource is set to operate as a SBFD time resource, both DL and UL resources exist in that time resource. At this time, if there is no UL signal to be received by the base station in that time resource, the base station can only perform DL transmission. In an SBFD resource, the base station's DL transmission occurs only within the DL subband. In other words, even if there is no UL signal transmitted by the terminal in the UL subband, DL transmission can only be performed within the DL subband.

[0223] Even if a specific time resource is determined to be an SBFD symbol, if there is no UL transmission from a terminal to be received by the base station, the base station may consider performing DL transmission not only on the DL subband but also outside the DL subband to improve DL throughput. In other words, performing DL transmission across the entire bandwidth may be considered.

[0224] In other words, it is possible to consider performing a fallback to TDD operation that performs DL or UL operation over the entire band, rather than SBFD operation over the DL / UL subband, in a resource determined as an SBFD symbol.

[0225] The base station may perform full duplex operation and the terminal may perform half duplex operation, or the base station may perform half duplex operation and the terminal may perform full duplex operation. Alternatively, both the base station and the terminal may support full duplex operation.

[0226] A terminal that knows that the base station can perform full duplex operation may be collectively referred to as an FD-aware terminal. A terminal that knows that the base station can perform SBFD operation may be collectively referred to as an SBFD-aware terminal. A terminal that knows that the base station can perform spectrum shared (or subband overlapping) full duplex (i.e., SSFD) operation may be referred to as an SSFD-aware terminal.

[0227] If a base station supports both half-duplex and full-duplex operations, it can inform the terminal of the resources (time or frequency, or both) that can (or are expected to) perform half-duplex and full-duplex.

[0228] If a base station is capable of SSFD operation, and in the case of a full-duplex base station, simultaneous UL reception is possible on some or all of the frequency resources available for DL ​​transmission at the base station. In other words, some frequency resources may allow for both DL transmission / reception and UL reception / transmission. In this case, in the case of SSFD, information about frequency resources that support SSFD can be communicated to the terminal. In addition, information about time resources that support SSFD can be communicated to the terminal.

[0229] For full duplex terminals, UL transmission may be possible simultaneously on some or all frequency resources available for DL ​​reception of the terminal.

[0230] When a base station performs full duplex operation such as SBFD or SSFD, it may perform SSFD and / or SBFD operation only for some time / frequency resources. In the case of SBFD-aware terminals and / or SSFD-aware terminals, if the cell knows the time / frequency resources on which the cell performs SSFD and / or SBFD operation, the cell may perform the operation of the terminal differently depending on the resource on which the cell operates in half duplex (HD), the resource on which the cell operates in SBFD, or the resource on which the cell operates in SSFD. For example, the terminal may perform transmission and reception by differently determining the time / frequency resource on which it performs reception of a DL signal / channel and / or transmission of a UL signal / channel as an HD resource, an SBFD resource, or an SSFD resource.

[0231] In the present disclosure, a method is described in which a terminal receives information for determining a time / frequency resource for performing full duplex from a base station, and a cell determines a time / frequency resource for performing full duplex from the information.

[0232] Through the contents of this disclosure, the base station and terminal can operate as follows.

[0233] The base station may perform a half-duplex operation in which only one of DL transmission or UL reception is performed in the entire frequency resources constituting the cell in the time resources operating in HD, and may perform a full-duplex operation in which DL transmission is performed through the first frequency resource (i.e., DL subband resource) within the frequency resources constituting the cell and UL reception is simultaneously performed through the second frequency resource (i.e., UL subband resource) within the frequency resources constituting the cell in the time resources operating in SBFD and SSFD.

[0234] To this end, the base station determines / determines time resources corresponding to the first time resource (i.e., HD symbol) and the second time resource (i.e., FD symbol) and transmits configuration information regarding the first time resource (i.e., HD symbol) and / or the second time resource (i.e., FD symbol) to the terminal. The FD symbol may include both the SBFD symbol and the SSFD symbol. More specifically, the base station determines / determines time resources corresponding to the HD symbol, the SBFD symbol, and / or the SSFD symbol, and transmits configuration information regarding the HD symbol, the SBFD symbol, and / or the SSFD symbol to the terminal.

[0235] At this time, the DL subband resources and / or UL subband resources may be configured differently in the time resources operating in SBFD and in the time resources operating in SSFD. In the time resources operating in SBFD, the DL subband resources and UL subband resources are configured so as not to overlap each other. In the time resources operating in SSFD, the DL subband resources and UL subband resources may be configured so as to overlap each other. The DL subband / UL subband resources may be configured with all frequency resources as well as some frequency resources of the system band.

[0236] The terminal receives configuration information about an HD symbol, an SBFD symbol, and / or an SSFD symbol from the network, and determines the positions of the HD symbol, the SBFD symbol, and / or the SSFD symbol. At this time, the terminal performs DL reception (UL transmission) through the entire frequency resources for which the terminal is configured to operate DL reception (UL transmission) in the HD symbol, and performs DL reception (UL transmission) through DL subband (UL subband) resources that are the same as or limited to the frequency resources for which the terminal performs DL reception (UL transmission) in the HD symbol in the SBFD symbol and / or SSFD symbol. In this case, even if the terminal is configured to perform DL reception (UL transmission) in a frequency resource that does not correspond to a DL subband resource (UL subband resource) in the SBFD symbol and / or SSFD symbol resource, the terminal does not perform DL reception (UL transmission) in a frequency resource that does not correspond to a DL subband resource (UL subband resource).

[0237] Hereinafter, a method is described in which an SBFD and / or SSFD-aware terminal receives configuration information about an HD time resource (e.g., a symbol), an SBFD time resource, and / or an SSFD time resource from a network, and determines the location of an HD symbol, an SBFD symbol, and / or an SSFD symbol.

[0238] Figure 16 illustrates the types of frequency resources that can configure a cell.

[0239] In Figure 16, the vertical axis represents frequency resources.

[0240] Referring to Fig. 16, when a cell performs HD, SBFD, and / or SSFD operations, the frequency resources constituting the cell can be configured / used in various forms from Type 1 to Type 7. Each type may also be referred to as an operation type of the cell.

[0241] The operations of the base station and terminal according to each type illustrated in Fig. 16 may be as follows.

[0242] Type 1: In the time resources in which the cell operates in Type 1, the base station performs half-duplex (HD) operation, and the entire frequency resources of the cell are used for DL. The terminal can perform reception of DL signals / channels in the entire frequency resources of the cell. And / or the terminal cannot perform transmission of UL signals / channels in the entire frequency resources of the cell.

[0243] Type 2: In the time resources where the cell operates in Type 2, the base station performs half-duplex operation, and the entire frequency resources of the cell are used for UL. The terminal can transmit UL signals / channels on the entire frequency resources of the cell. And / or the terminal cannot receive DL signals / channels on the entire frequency resources of the cell.

[0244] Type 3: In the time resource in which the cell operates as Type 3, the DL subband resources and the UL subband resources do not overlap each other. The base station performs the SBFD operation, and among the entire frequency resources of the cell, the DL subband resources are used for DL, and the UL subband resources are used for UL. The terminal can perform reception of a DL signal / channel in the DL subband resources within the cell. And / or the terminal cannot perform reception of a DL signal / channel in resources other than the DL subband within the cell. The terminal can perform transmission of a UL signal / channel in the UL subband resources within the cell. And / or the terminal cannot perform transmission of a UL signal / channel in resources other than the UL subband within the cell.

[0245] Type 4: In the time resources in which the cell operates in Type 4, the base station performs SSFD operation, and the entire frequency resources of the cell are used for DL ​​and UL operations. The terminal can receive DL signals / channels across the entire frequency resources of the cell. The terminal can transmit UL signals / channels across the entire frequency resources of the cell.

[0246] Type 5: In a time resource where the cell operates as Type 5, the base station performs SSFD operation, and the entire frequency resources of the cell are used for DL ​​operation, and among the entire frequency resources of the cell, UL subband resources are used for UL. The terminal can perform reception of DL signals / channels on the entire frequency resources of the cell. The terminal can perform transmission of UL signals / channels on UL subband resources within the cell. And / or the terminal cannot perform reception of DL signals / channels on UL subband resources within the cell.

[0247] Type 6: In a time resource where the cell operates as Type 6, the base station performs SSFD operation, and among the entire frequency resources of the cell, DL subband resources are used for DL, and the entire frequency resources of the cell are used for UL. The terminal can perform reception of DL signals / channels in the DL subband resources within the cell. And / or the terminal cannot perform transmission of UL signals / channels in the DL subband resources within the cell. The terminal can perform transmission of UL signals / channels in the entire frequency resources of the cell.

[0248] Type 7: In a time resource in which a cell operates in Type 7, DL subband resources and UL subband resources may overlap each other. The base station performs SSFD operation, and among the entire frequency resources of the cell, DL subband resources are used for DL, and UL subband resources are used for UL. Frequency resources included in both DL subbands and UL subbands are used for DL ​​and UL operations. A terminal can perform reception of a DL signal / channel in a DL subband resource within the cell. And / or the terminal cannot perform reception of a DL signal / channel in resources other than the DL subband within the cell. A terminal can perform transmission of a UL signal / channel in a UL subband resource within the cell. And / or the terminal cannot perform transmission of a UL signal / channel in resources other than the UL subband within the cell.

[0249] In the time resource where the cell operates in types 3 to 7, for HD terminals, DL reception or UL transmission operations can be performed. For FD terminals, DL reception and / or UL reception operations can be performed.

[0250] As described above, when a cell performs SBFD and / or SSFD operations, frequency resources for DL ​​and UL operations can be configured in various ways depending on time resources.

[0251] Hereinafter, a method is described in which a terminal receives information for determining the cell's operating type (or frequency resources for DL ​​and UL operations) related to SBFD / SSFD based on time resources, and determines the cell's operating type (or frequency resources for DL ​​and UL operations) based on the information. Once the terminal determines the cell's operating type based on specific resources, the terminal can perform operations based on the operating type.

[0252] In the following, the terminal may mean an SBFD and / or an SBFD-aware terminal.

[0253] Approach 1. Indicate subband / wideband information for DL / UL directions.

[0254] A terminal may operate as follows to determine frequency resources for performing DL and / or UL operations in a specific time resource for a cell performing SBFD and / or SSFD operations.

[0255] The terminal receives information from the network regarding whether it operates within a subband or a wideband for DL ​​and UL operations in a specific cell (this may be referred to as "operation information"). This operation information may vary by time resource (e.g., symbol, slot).

[0256] Through this, the terminal can determine information about frequency resources that can be used for DL ​​operations in the cell (i.e., the first frequency resource or DL ​​subband) and / or frequency resources that can perform UL operations (i.e., the second frequency resource or UL subband).

[0257] More specifically, at least one of the following pieces of information may be provided / indicated as operation information for each DL and UL operation. Frequency resources available for DL ​​and UL operations, as determined by the terminal based on the provided / indicated operation information, and the corresponding operation of the terminal may be as follows.

[0258] For example, the motion information may indicate at least one of a subband, a wideband, and an NA.

[0259] 1) Subband

[0260] The DL operation and / or UL operation frequency resources of the terminal may be indicated as being a subband. If a subband is indicated, this may mean that the terminal operates within a subband among the frequency resources constituting the cell. In other words, the operating frequency resources of the terminal are indicated as being a subband. In this case, information about the frequency resources constituting the subband may be indicated / determined independently / separately from the operation information.

[0261] When a subband is indicated for DL ​​operation, the terminal may perform reception of DL signals / channels on resources within the DL subband. And / or may not perform reception of DL signals / channels on resources outside the DL subband.

[0262] When a subband is indicated for UL operation, the terminal may transmit UL signals / channels on resources within the UL subband. And / or may not transmit UL signals / channels on resources outside the UL subband.

[0263] 2) Wideband

[0264] The terminal's DL operation and / or UL operation frequency resources may be indicated as wideband. If wideband is indicated, this may mean that the terminal operates across the entire frequency resources constituting the cell.

[0265] When wideband is indicated for DL ​​operation, the terminal can perform reception of DL signals / channels on the entire frequency resources of the cell.

[0266] When wideband is indicated for UL operation, the terminal can perform transmission of UL signals / channels on the entire frequency resources of the cell.

[0267] 3) Not Available (NA)

[0268] The terminal's DL operation and / or UL operation frequency resources may be indicated as NA. If NA is indicated, this may mean that there are no operable frequency resources.

[0269] When DL operation is indicated as NA, the terminal cannot perform reception of DL signals / channels on the entire frequency resources of the cell.

[0270] When UL operation is indicated as NA, the terminal cannot perform transmission of UL signals / channels on the entire frequency resources of the cell.

[0271] Such motion information may be set semi-statically, for example, via RRC signaling, or may be independently / additionally indicated dynamically via signaling such as DCI.

[0272] At this time, in the case of HD terminals, only one operation among DL reception and UL transmission can be performed in a specific time resource. In the case of FD terminals, DL reception and / or UL transmission can be performed in a specific time resource.

[0273] For example, for a specific time resource, a terminal may be instructed by the network to use wideband for DL ​​operation and NA for UL operation. This may mean that Type 1 of FIG. 16 has been instructed. When the terminal performs reception of a DL signal / channel in the specific time resource, the terminal determines that the entire frequency resource can be used for DL ​​reception. The terminal determines that it cannot transmit a UL signal / channel in the specific time resource.

[0274] As another example, a terminal may be instructed by the network to select a subband for DL ​​operation and a subband for UL operation in a specific time resource. This may mean that Type 3 of FIG. 16 has been instructed. When the terminal performs reception of a DL signal / channel in the specific time resource, the terminal determines that the frequency resources within the DL subband can be used for DL ​​reception. When the terminal performs transmission of a UL signal / channel in the specific time resource, the terminal determines that the frequency resources within the UL subband can be used for UL transmission.

[0275] As another example, a terminal may be instructed by the network to use a wideband for DL ​​operation and a wideband for UL operation in a specific time resource. This may mean that Type 4 of FIG. 16 has been instructed. When the terminal performs reception of a DL signal / channel in the specific time resource, the terminal determines that the entire DL frequency resource can be used for DL ​​reception. When the terminal performs transmission of a UL signal / channel in the specific time resource, the terminal determines that the entire frequency resource can be used for UL transmission.

[0276] As another example, a terminal may be instructed by the network to use a wideband for DL ​​operation and a subband for UL operation in a specific time resource. This may mean that Type 5 of FIG. 16 has been instructed. When the terminal performs reception of a DL signal / channel in the specific time resource, the terminal determines that the entire DL frequency resource can be used for DL ​​reception. When the terminal performs transmission of a UL signal / channel in the specific time resource, the terminal determines that the frequency resource within the UL subband can be used for UL transmission.

[0277] Meanwhile, a terminal may not receive operational information from the network regarding whether it operates within a subband or wideband for DL ​​and UL operations in a specific cell for a specific time resource, as described above. In this case, the terminal may perform one of the following two operations.

[0278] Alt 1. The terminal can assume that both DL and UL operations operate in wideband. That is, the terminal can determine that wideband operation is the default operation for both DL and UL operations. Thereafter, the terminal can receive information from the network regarding whether the operating frequency resource for each DL / UL operation is a subband or NA for a specific time resource.

[0279] Alt 2. The terminal can assume that both DL and UL operations operate in subbands. That is, the terminal can determine that subband operation is the default operation for both DL and UL operations. Thereafter, the terminal can receive information from the network regarding whether the operating frequency resource for each DL / UL operation is wideband or NA for a specific time resource.

[0280] Approach 2. HD / FD motion information and SB / SS motion information instructions.

[0281] A terminal may operate as follows to determine frequency resources for performing DL and / or UL operations in a specific time resource for a cell performing SBFD and / or SSFD operations.

[0282] A terminal can receive information from the network about whether a specific cell operates in HD or FD mode. For convenience, let's call this information HD / FD operation information. HD / FD operation information may vary by time resource (e.g., symbol, slot).

[0283] A terminal can receive information from the network regarding whether the cell performs SBFD or SSFD operation for a time resource designated as FD operation. For convenience, let's refer to this information as SBFD / SSFD operation information. SBFD / SSFD operation information may vary depending on the time resource (e.g., symbol, slot) for which the cell operates as FD.

[0284] More specifically, one of the following pieces of information may be indicated for the HD / FD operation information of the cell. For example, one of the following pieces of information may be indicated for a resource that has been instructed to perform FD operation. The frequency resources that can be used for DL ​​and UL operations determined by the terminal according to the indicated information and the corresponding operations of the terminal may be as follows.

[0285] 1) HD operation

[0286] A cell may be instructed to operate in half-duplex mode. In this case, the cell may perform either DL or UL operations using all frequency resources. If the terminal is instructed to operate in HD mode, it may receive DL signals / channels across all frequency resources of the cell when performing DL operation. If the terminal is instructed to operate in UL mode, it may transmit UL signals / channels across all frequency resources of the cell.

[0287] 2) FD operation

[0288] A cell may be indicated to operate in full duplex. Additionally, whether the cell operates in SBFD or SSFD may be indicated. Alternatively, whether the cell operates in SBFD, SSFD in all frequency resources, SSFD in resources within a DL subband, and / or SSFD in resources within a UL subband may be indicated.

[0289] When a terminal is instructed to perform FD operation and additionally instructed to perform SBFD operation, the terminal can perform reception of DL signals / channels in resources within the DL subband. And / or cannot perform reception of DL signals / channels in resources outside the DL subband. The terminal can perform transmission of UL signals / channels in resources within the UL subband. And / or cannot perform transmission of UL signals / channels in resources outside the UL subband.

[0290] When a terminal is instructed to perform FD operation and additionally instructed to perform SSFD operation, the terminal can perform reception of DL signals / channels across all frequency resources of the cell. The terminal can perform transmission of UL signals / channels across all frequency resources of the cell.

[0291] When a terminal is instructed to perform FD operation and additionally instructed to perform SSFD operation within a DL subband, the terminal can perform reception of DL signals / channels on resources within the DL subband. And / or, the terminal cannot perform reception of DL signals / channels on resources outside the DL subband. The terminal can perform transmission of UL signals / channels on all frequency resources of the cell.

[0292] When a terminal is instructed to perform FD operation and additionally instructed to perform SSFD operation within a UL subband, the terminal can perform reception of DL signals / channels across all frequency resources of the cell. The terminal can perform transmission of UL signals / channels within resources within the UL subband. And / or cannot perform transmission of UL signals / channels on resources outside the UL subband.

[0293] Operation information such as HD / FD operation information and SB / SS operation information can be semi-statically set, for example, via RRC signaling, or can be dynamically indicated independently / additionally via signaling such as DCI. For example, HD / FD operation information of a cell can be semi-statically set via RRC signaling, and / or SBFD / SSFD operation information in FD resources can be dynamically indicated via signaling such as DCI.

[0294] At this time, in the case of HD terminals, only one operation among DL reception and UL transmission can be performed in a specific time resource. In the case of FD terminals, DL reception and / or UL transmission can be performed in a specific time resource.

[0295] For example, at a specific time resource, a terminal may be instructed by the network that the cell is performing HD operation. This may mean that Type 1 or Type 2 of FIG. 16 has been instructed. If the terminal performs DL reception, it operates as in Type 1, and if the terminal performs UL transmission, it operates as in Type 2.

[0296] As another example, in a specific time resource, a terminal may be instructed by the network that the cell performs FD operation and additionally performs SBFD operation. This may mean that Type 3 of FIG. 16 has been instructed. When the terminal performs reception of a DL signal / channel in the specific time resource, the terminal determines that the frequency resources within the DL subband can be used for DL ​​reception. When the terminal performs transmission of a UL signal / channel in the specific time resource, the terminal determines that the frequency resources within the UL subband can be used for UL transmission.

[0297] As another example, a terminal may be instructed by the network in a specific time resource that the cell performs FD operation and additionally performs SSFD operation. This may mean that Type 4 of FIG. 16 has been instructed. When the terminal performs reception of a DL signal / channel in the specific time resource, the terminal determines that the entire DL frequency resource can be used for DL ​​reception. When the terminal performs transmission of a UL signal / channel in the specific time resource, the terminal determines that the entire frequency resource can be used for UL transmission.

[0298] If the terminal has not received information from the network about whether a specific cell operates in HD or FD for a specific time resource, it can operate as follows.

[0299] The terminal may assume that the cell operates in HD mode during the specific time resource. In this case, the terminal may receive information from the network regarding the time resources during which the cell operates in FD mode. For the time resources during which the terminal is configured to operate in FD mode, the terminal may determine that the cell operates in FD mode, and for the remaining time resources, the terminal may determine that the cell operates in HD mode.

[0300] If the terminal has not received information from the network about whether the cell operates as SBFD or SSFD for a specific time resource for which the cell is set to operate as FD, it can operate as follows.

[0301] 1) The terminal can assume that the cell operates in SBFD at the specific time resource.

[0302] 2) The terminal can receive information from the network about the time resources during which the cell operates in SSFD. The terminal can determine that the cell operates in SSFD for the time resources during which the cell operates in FD, and determine that the cell operates in SBFD for the remaining time resources.

[0303] Figure 17 illustrates an operation method of a terminal in a wireless communication system.

[0304] Referring to Fig. 17, the terminal receives operation information related to an operation applied to a time resource from the network (S171).

[0305] The terminal performs the above operation within the time resource (S172). At this time, the operation is determined based on the operation information among HD (half duplex) operation, SBFD (subband full duplex) operation, and SSFD (shared spectrum full duplex) operation.

[0306] According to an embodiment, the operation information may indicate one of 1) subband, 2) wideband, and 3) not available (NA) for each of the downlink operation (specifically, reception of a downlink signal / channel, which may be abbreviated as downlink reception hereinafter) and the uplink operation (specifically, transmission of an uplink signal / channel, which may be abbreviated as uplink transmission hereinafter) of the terminal.

[0307] If the above-mentioned operation information indicates the subband for the downlink reception, the terminal performs the operation of receiving a downlink signal only on resources within the downlink subband in the time resource. In addition, if the above-mentioned operation information indicates the subband for the uplink transmission, the terminal performs the operation of transmitting an uplink signal only on resources within the uplink subband in the time resource.

[0308] If the above-mentioned operation information indicates the wideband for the downlink reception, the terminal performs a reception operation of a downlink signal in the entire frequency resources of the cell in the time resource, and if the above-mentioned operation information indicates the wideband for the uplink transmission, the terminal performs a transmission operation of an uplink signal in the entire frequency resources of the cell in the time resource.

[0309] If the above-mentioned operation information indicates that the downlink reception is not available, the terminal does not perform a reception operation of a downlink signal in the entire frequency resources of the cell in the time resource, and if the above-mentioned operation information indicates that the uplink transmission is not available, the terminal does not perform a transmission operation of an uplink signal in the entire frequency resources of the cell in the time resource.

[0310] If the above-mentioned operation information indicates the wideband for the downlink reception, the terminal performs a reception operation of a downlink signal in the entire frequency resources of the cell in the time resource, and if the above-mentioned operation information indicates the subband for the uplink transmission, the terminal performs a transmission operation of an uplink signal only in resources within the uplink subband in the time resource.

[0311] If the above-mentioned operation information indicates the subband for the downlink reception, the terminal performs a reception operation of a downlink signal only in resources within the downlink subband in the time resource, and if the above-mentioned operation information indicates the wideband for the uplink transmission, the terminal performs a transmission operation of an uplink signal in the entire frequency resources of the cell in the time resource.

[0312] An example of the operation of such a terminal has been described in detail in the aforementioned Approach 1. According to this example of operation, by indicating one of 1) subband, 2) wideband, and 3) Not available (NA) for each of the downlink operation and the uplink operation based on the operation information, one of the seven types of FIG. 16 can be indicated.

[0313] For example, if the motion information indicates wideband for downlink operation and not available (NA) for uplink operation, this can be interpreted as indicating type 1 (i.e., downlink HD) of FIG. 16.

[0314] If the downlink operation is not available based on the motion information and wideband is indicated for the uplink operation, this can be interpreted as indicating Type 2 (i.e., uplink HD) of FIG. 16.

[0315] When a subband is indicated for downlink operation and a subband for uplink operation based on operation information, if the downlink subband and the uplink subband do not overlap each other in the frequency domain, this can be interpreted as indicating Type 3 (i.e., SBFD) of FIG. 16.

[0316] If wideband is indicated for downlink operation and wideband for uplink operation based on the operation information, this can be interpreted as indicating type 4 of Fig. 16 (i.e., SSFD in the entire band of the cell).

[0317] If the downlink operation is indicated as wideband and the uplink operation as subband based on the operation information, this can be interpreted as indicating Type 5 of Fig. 16 (i.e., SSFD in some bands of the cell, downlink in the remaining bands).

[0318] If the downlink operation is indicated as a subband and the uplink operation as a wideband based on the operation information, this can be interpreted as indicating Type 6 of Fig. 16 (i.e., SSFD in some bands of the cell, uplink in the remaining bands).

[0319] When a subband is indicated for downlink operation and a subband for uplink operation based on operation information, if the downlink subband and the uplink subband overlap each other in the frequency domain, it can be interpreted as indicating Type 7 of FIG. 16 (i.e., SSFD in some bands of the cell, downlink in some of the remaining bands, and uplink in others).

[0320] According to the above operation example, for each downlink operation and uplink operation, instead of simply indicating one of the three types of HD, SBFD, and SSFD, one of the seven types of FIG. 16 can be indicated. That is, the SSFD operation can be subdivided into multiple operations (e.g., four operations) and one of them can be indicated. Then, since the base station and terminal can select / indicate a more appropriate operation by considering the amount of data to be transmitted or the channel environment, etc., the communication efficiency is increased.

[0321] That is, according to the method according to the present disclosure, an appropriate operation among half-duplex (HD), SBFD, and SSFD operations can be used depending on circumstances such as interference and the amount of data to be transmitted and received. Furthermore, SSFD operation resources can be finely divided and scheduled. This can improve the system's throughput and latency performance.

[0322] In some embodiments, the operation information may include first operation information indicating whether the cell operates in half duplex (HD) or full duplex (FD) and second operation information indicating whether the cell operates in SBFD or SSFD in a time resource in which the cell operates in FD.

[0323] If the first operation information indicates that the cell operates in half-duplex, the second operation information may not be included in the operation information, or may be ignored by the terminal even if included. In this case, the operation information may be interpreted as indicating Type 1 or 2 of FIG. 16.

[0324] If the first operation information indicates that the cell operates in the full duplex mode and the second operation information indicates that the cell operates in the SBFD mode, the terminal performs a downlink signal reception operation only in resources within the downlink subband in the time resource and performs an uplink signal transmission operation only in resources within the uplink subband. That is, the operation information can be interpreted as indicating Type 3 of FIG. 16.

[0325] Alternatively, if the first operation information indicates that the cell operates in the full duplex mode and the second operation information indicates that the cell operates in the SSFD mode, the terminal performs a reception operation of a downlink signal in the entire frequency resources of the cell in the time resource and performs a transmission operation of an uplink signal in the entire frequency resources of the cell. That is, the operation information can be interpreted as indicating Type 4 of FIG. 16.

[0326] Examples of these actions are described above in Approach 2.

[0327] Figure 18 shows an example of signaling and operation between a base station and a terminal.

[0328] Referring to Figure 18, the base station provides TDD configuration information to the terminal (S181). The TDD configuration information can inform the terminal of downlink resources and uplink resources.

[0329] The base station provides the terminal with operation information related to the operation applied to the time resource (S182).

[0330] The above operation information may include, as described in FIG. 17, i) one of subband, wideband, and Not available (NA) for each of downlink operation / uplink operation, or ii) first operation information indicating whether the cell operates in half duplex (HD) or full duplex (FD) and second operation information indicating whether the cell operates in SBFD or SSFD in a time resource in which the cell operates in FD.

[0331] The terminal determines the action to be applied to the time resource (S183). For example, the terminal can determine the action to be applied to the time resource based on TDD configuration information and action information.

[0332] The base station and terminal perform transmission and reception according to the operations determined for each time resource (S184). At this time, the operations of the base station and terminal have been described above in Approaches 1 and 2 and FIG. 17.

[0333] Approach 3. Indicate DL / UL information at subband level.

[0334] A terminal may operate as follows to determine frequency resources for performing DL and / or UL operations in a specific time resource for a cell performing SBFD and / or SSFD operations.

[0335] The frequency resources constituting a cell may be composed of multiple subbands. These subbands may be configured so as not to overlap with each other.

[0336] In this case, the terminal can receive information about the link direction of the cell from the network on a subband-by-subband basis for the multiple subband resources that make up the cell. This allows the terminal to determine the link direction in which the cell operates for each subband. Link direction information may vary by time resource (e.g., slot / symbol).

[0337] More specifically, at least one of the following link direction information may be indicated for each subband for a specific time resource. Frequency resources available for DL ​​and UL operations determined by the terminal based on the indicated information and the corresponding terminal operations may be as follows.

[0338] 1) Downlink (DL)

[0339] The terminal may be instructed that the corresponding subband is to be used as DL.

[0340] When a terminal performs reception of a DL signal / channel in the resource, it determines that the frequency resources within the subband can be used for DL ​​reception.

[0341] 2) Uplink (UL)

[0342] The terminal may be instructed that the corresponding subband is to be used as UL.

[0343] When a terminal performs transmission of a UL signal / channel in the resource, it determines that the frequency resources within the subband can be used for UL transmission.

[0344] 3) Downlink + Uplink (DL+UL)

[0345] The terminal may be instructed that the corresponding subband is to be used as DL and / or UL.

[0346] When a terminal performs reception of a DL signal / channel from a resource, it determines that the frequency resources within the subband can be used for DL ​​reception. And / or when it performs transmission of a UL signal / channel from the resource, it determines that the frequency resources within the subband can be used for UL transmission.

[0347] In the case of an HD terminal, the terminal can perform reception of a DL signal / channel or transmission of a UL signal / channel in the corresponding subband resource.

[0348] For FD terminals, the terminal can perform reception of DL signals / channels and / or transmission of UL signals / channels in the corresponding subband resources.

[0349] 4) Flexible (F)

[0350] The terminal may be instructed that the corresponding subband be used as a flexible resource, either DL or UL.

[0351] When a terminal performs reception of a DL signal / channel on a given resource, it determines that the frequency resources within the subband can be used for DL ​​reception. Alternatively, when performing transmission of a UL signal / channel on a given resource, it determines that the frequency resources within the subband can be used for UL transmission.

[0352] Information about this link direction can be set semi-statically, for example, via RRC signaling, or can be independently / additionally dynamically indicated via signaling such as DCI.

[0353] For information about flexible resources, a terminal may not receive explicit guidance from the network. If the terminal does not receive separate link direction information for a specific subband at a specific time resource from the network, the terminal may determine that resource to be a flexible resource.

[0354] Flexible resources and DL+UL resources can be indistinguishably designated with the same link direction information (e.g., "flexible"). In this case, if a terminal is designated as flexible for a specific time resource by the network, the terminal can operate as follows.

[0355] For HD terminals, the resource is judged and operates as a flexible resource. That is, the terminal can judge that the subband is used as a flexible resource for DL ​​or UL.

[0356] When a terminal performs reception of a DL signal / channel on a given resource, it determines that the frequency resources within the subband can be used for DL ​​reception. Alternatively, when performing transmission of a UL signal / channel on a given resource, it determines that the frequency resources within the subband can be used for UL transmission.

[0357] For FD terminals, the corresponding resource is judged and operates in the same manner as the DL+UL resource. That is, the terminal can judge that the corresponding subband is used as a flexible resource for DL ​​or UL.

[0358] When a terminal performs reception of a DL signal / channel on a given resource, it determines that the frequency resources within the subband can be used for DL ​​reception. Alternatively, when performing transmission of a UL signal / channel on a given resource, it determines that the frequency resources within the subband can be used for UL transmission.

[0359] In the case of HD terminals, if a specific resource is set as a DL+UL resource, the terminal can interpret / judge the resource in the same way as a flexible resource and operate it.

[0360] To perform the above operations, the terminal receives information about the frequency resources constituting each subband from the network via higher-layer signaling, and can use this information to determine the frequency resources constituting each subband. Each subband may be composed of either continuous or non-contiguous frequency resources.

[0361] The above can also be applied when a subband is composed of one, that is, when the entire resources of a cell are judged as one subband and the same link direction information is applied.

[0362] Figure 19 illustrates a wireless device applicable to the present specification.

[0363] Referring to FIG. 19, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR).

[0364] A first wireless device (100) includes at least one processor (102) and at least one memory (104), and may further include at least one transceiver (106) and / or at least one antenna (108). The processor (102) controls the memory (104) and / or the transceiver (106), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (102) may process information in the memory (104) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (106). Furthermore, the processor (102) may receive a wireless signal including 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 information / instructions related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including instructions for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals via one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit. In this specification, wireless device may also mean a communication modem / circuit / chip.The processor (102) receives operation information related to an operation applied to a time resource, and performs the operation on the time resource, wherein the operation is determined based on the operation information among an HD operation, an SBFD operation, and an SSFD operation.

[0365] The second wireless device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memories (204) and / or the transceivers (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). Furthermore, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of the fourth information / signals in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In this specification, a wireless device may also mean a communication modem / circuit / chip. The processor (202) transmits operation information related to an operation applied to a time resource to the terminal, and communicates with the terminal according to the operation in the time resource.At this time, the above operation is determined based on the operation information among the HD operation, SBFD operation, and SSFD operation.

[0366] Hereinafter, the hardware elements of the wireless device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed herein, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed herein.

[0367] The one or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. The one or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in the one or more processors (102, 202). The one or more processors (102, 202) may also be implemented by at least one computer-readable medium (CRM) containing instructions based on being executed by at least one processor.

[0368] That is, at least one computer-readable medium (CRM) including instructions based on being executed by at least one processor executes the steps of receiving operation information related to an operation applied to a time resource, and performing the operation on the time resource. At this time, the operation is determined based on the operation information among an HD operation, an SBFD operation, and an SSFD operation.

[0369] The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions. The firmware or software configured to perform the descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be included in one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202). The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0370] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0371] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of this document, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of this document, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed herein, via one or more antennas (108, 208). In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0372] Fig. 20 illustrates an example of a signal processing module structure. Here, signal processing may be performed in the processor (102, 202) of Fig. 19.

[0373] Referring to FIG. 20, a transmission device (e.g., a processor, a processor and a memory, or a processor and a transceiver) within a terminal or a base station may include a scrambler (301), a modulator (302), a layer mapper (303), an antenna port mapper (304), a resource block mapper (305), and a signal generator (306).

[0374] A transmitting device can transmit one or more codewords. The coded bits within each codeword are scrambled by a scrambler (301) and transmitted over a physical channel. A codeword may also be referred to as a data string and may be equivalent to a transport block, which is a data block provided by the MAC layer.

[0375] The scrambled bits are modulated into complex-valued modulation symbols by a modulator (302). The modulator (302) can modulate the scrambled bits according to a modulation scheme and arrange them into complex-valued modulation symbols that represent positions on a signal constellation. There is no limitation on the modulation scheme, and m-PSK (m-Phase Shift Keying) or m-QAM (m-Quadrature Amplitude Modulation) can be used to modulate the encoded data. The modulator may be referred to as a modulation mapper.

[0376] The complex modulation symbols may be mapped to one or more transmission layers by a layer mapper (303). The complex modulation symbols on each layer may be mapped by an antenna port mapper (304) for transmission on an antenna port.

[0377] The resource block mapper (305) can map the complex modulation symbol for each antenna port to an appropriate resource element within a virtual resource block (VRB) allocated for transmission. The resource block mapper can map the VRB to a physical resource block (PRB) according to an appropriate mapping scheme. The resource block mapper (305) can assign the complex modulation symbol for each antenna port to an appropriate subcarrier and multiplex it according to the user.

[0378] The signal generator (306) can generate a complex-valued time domain OFDM symbol signal by modulating a complex modulation symbol for each antenna port, i.e., an antenna-specific symbol, with a specific modulation method, for example, an Orthogonal Frequency Division Multiplexing (OFDM) method. The signal generator can perform an Inverse Fast Fourier Transform (IFFT) on the antenna-specific symbol, and a Cyclic Prefix (CP) can be inserted into the time domain symbol on which the IFFT is performed. The OFDM symbol is transmitted to a receiving device through each transmitting antenna through digital-to-analog conversion, frequency uplink conversion, etc. The signal generator can include an IFFT module, a CP inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0379] Fig. 21 illustrates another example of the signal processing module structure within a transmission device. Here, signal processing may be performed in a processor of a terminal / base station, such as the processor (102, 202) of Fig. 19.

[0380] Referring to FIG. 21, a transmission device (e.g., a processor, a processor and a memory, or a processor and a transceiver) within a terminal or a base station may include a scrambler (401), a modulator (402), a layer mapper (403), a precoder (404), a resource block mapper (405), and a signal generator (406).

[0381] The transmitting device can transmit coded bits within a codeword through a physical channel after scrambling the coded bits within the codeword by a scrambler (401).

[0382] The scrambled bits are modulated into complex modulation symbols by a modulator (402). The modulator can modulate the scrambled bits according to a predetermined modulation scheme and arrange them into complex modulation symbols representing positions on a signal constellation. There is no limitation on the modulation scheme, and pi / 2-BPSK (pi / 2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), or m-QAM (m-Quadrature Amplitude Modulation) can be used to modulate the encoded data.

[0383] The above complex modulation symbol can be mapped to one or more transmission layers by the layer mapper (403).

[0384] The complex modulation symbols on each layer can be precoded by the precoder (404) for transmission on the antenna ports. Here, the precoder may perform precoding after performing transform precoding on the complex modulation symbols. Alternatively, the precoder may perform precoding without performing transform precoding. The precoder (404) may process the complex modulation symbols in a MIMO manner according to multiple transmission antennas to output antenna-specific symbols and distribute the antenna-specific symbols to the corresponding resource block mapper (405). The output z of the precoder (404) can be obtained by multiplying the output y of the layer mapper (403) by the precoding matrix W of NХM. Here, N is the number of antenna ports and M is the number of layers.

[0385] The resource block mapper (405) maps the demodulation modulation symbol for each antenna port to the appropriate resource element within the virtual resource block allocated for transmission.

[0386] The resource block mapper (405) can assign complex modulation symbols to appropriate subcarriers and multiplex them according to the user.

[0387] The signal generator (406) can generate a complex-valued time domain OFDM (Orthogonal Frequency Division Multiplexing) symbol signal by modulating a complex modulation symbol with a specific modulation method, for example, OFDM. The signal generator (406) can perform an Inverse Fast Fourier Transform (IFFT) on an antenna-specific symbol, and a Cyclic Prefix (CP) can be inserted into the time domain symbol on which the IFFT has been performed. The OFDM symbol is transmitted to a receiving device through each transmitting antenna after going through digital-to-analog conversion, frequency upconversion, etc. The signal generator (406) can include an IFFT module, a CP inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0388] The signal processing process of the receiving device may be configured in reverse order of the signal processing process of the transmitter. Specifically, the processor of the receiving device performs decoding and demodulation on a wireless signal received externally through the antenna port(s) of the transceiver. The receiving device may include a plurality of multiple receiving antennas, and each signal received through the receiving antenna is restored to a baseband signal and then multiplexed and MIMO demodulated to be restored to a data sequence originally intended to be transmitted by the transmitting device. The receiving device (1820) may include a signal restorer for restoring the received signal to a baseband signal, a multiplexer for combining and multiplexing the received and processed signals, and a channel demodulator for demodulating the multiplexed signal sequence into a corresponding codeword. The signal restorer, the multiplexer, and the channel demodulator may be configured as an integrated module performing their functions or as individual modules. More specifically, the signal restorer may include an analog-to-digital converter (ADC) that converts an analog signal into a digital signal, a CP remover that removes a CP from the digital signal, an FFT module that applies an FFT (fast Fourier transform) to a signal from which the CP has been removed to output a frequency domain symbol, and a resource element demapper / equalizer that restores the frequency domain symbol to an antenna-specific symbol. The antenna-specific symbol is restored to a transmission layer by a multiplexer, and the transmission layer is restored to a codeword that the transmitter intended to transmit by a channel demodulator.

[0389] FIG. 22 illustrates an example of a wireless communication device according to an implementation example of the present disclosure.

[0390] Referring to FIG. 22, a wireless communication device, for example, a terminal, may include at least one of a processor (2310) such as a digital signal processor (DSP) or a microprocessor, a transceiver (2335), a power management module (2305), an antenna (2340), a battery (2355), a display (2315), a keypad (2320), a global positioning system (GPS) chip (2360), a sensor (2365), a memory (2330), a subscriber identification module (SIM) card (2325), a speaker (2345), and a microphone (2350). There may be a plurality of antennas and processors.

[0391] The processor (2310) can implement the functions, procedures, and methods described in this specification. The processor (2310) of FIG. 22 may be the processor (102, 202) of FIG. 19.

[0392] Memory (2330) is connected to the processor (2310) and stores information related to the processor's operation. The memory may be located internally or externally to the processor and may be connected to the processor via various technologies, such as wired or wireless connections. The memory (2330) of FIG. 22 may be the memory (104, 204) of FIG. 19.

[0393] A user may input various types of information, such as a phone number, using various techniques, such as pressing buttons on a keypad (2320) or activating sound using a microphone (2350). The processor (2310) may receive and process the user's information and perform an appropriate function, such as dialing the entered phone number. In some scenarios, data may be retrieved from a SIM card (2325) or memory (2330) to perform the appropriate function. In some scenarios, the processor (2310) may display various types of information and data on a display (2315) for the user's convenience.

[0394] A transceiver (2335) is coupled to a processor (2310) and transmits and / or receives wireless signals, such as radio frequency (RF) signals. The processor may control the transceiver to initiate communication or transmit wireless signals containing various types of information or data, such as voice communication data. The transceiver includes a transmitter and a receiver for transmitting and receiving wireless signals. An antenna (2340) may facilitate the transmission and reception of wireless signals. In some implementations, upon receiving a wireless signal, the transceiver may forward and convert the signal to a baseband frequency for processing by the processor. The processed signal may be processed by various techniques, such as being converted into audible or readable information for output through a speaker (2345). The transceiver of FIG. 22 may be the transceiver (106, 206) of FIG. 25.

[0395] Although not shown in FIG. 22, various components, such as a camera and a Universal Serial Bus (USB) port, may be additionally included in the terminal. For example, the camera may be connected to the processor (2310).

[0396] Fig. 22 is only one implementation example for a terminal, and the implementation examples are not limited thereto. The terminal does not necessarily have to include all the elements of Fig. 22. That is, some components, such as a keypad (2320), a Global Positioning System (GPS) chip (2360), a sensor (2365), and a SIM card (2325), may not be essential elements, and in this case, may not be included in the terminal.

[0397] Figure 23 shows an example of a processor (2000).

[0398] Referring to FIG. 23, the processor (2000) may include a control channel transceiver (2010) and a data channel transceiver (2020). The processor (2000) may, for example, execute the methods described in FIGS. 16 to 18 from the terminal's perspective. The processor (2000) may be an example of the processors (102, 202) of FIG. 19.

[0399] Figure 24 shows an example of a processor (3000).

[0400] Referring to FIG. 24, the processor (3000) may include a control information / data generation module (3010) and a transmission / reception module (3020). The processor (3000) may execute the methods described in FIGS. 16 to 18 from the perspective of a base station or a network. The processor (3000) may be an example of the processor (102, 202) of FIG. 19.

[0401] Figure 25 illustrates another example of a wireless device.

[0402] According to FIG. 25, the wireless device may include at least one processor (102, 202), at least one memory (104, 204), at least one transceiver (106, 206), and one or more antennas (108, 208).

[0403] The difference between the example of the wireless device described in FIG. 19 and the example of the wireless device in FIG. 25 is that in FIG. 19, the processor (102, 202) and the memory (104, 204) are separated, whereas in the example of FIG. 25, the memory (104, 204) is included in the processor (102, 202). That is, the processor and the memory may constitute a single chipset.

[0404] Figure 26 illustrates another example of a wireless device applicable to the present specification. The wireless device may be implemented in various forms depending on the use case / service.

[0405] Referring to FIG. 26, the wireless device (100, 200) may correspond to the wireless device of FIG. 19 and may be composed of various elements, components, units / units, and / or modules. For example, the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and an additional element (140). The communication unit may include a communication circuit (112) and a transceiver(s) (114). For example, the communication circuit (112) may include one or more processors (102, 202) and / or one or more memories (104, 204). For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 19. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (140) and controls the overall operations of the wireless device. For example, the control unit (120) can control the electrical / mechanical operations of the wireless device based on the program / code / command / information stored in the memory unit (130). In addition, the control unit (120) can transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless / wired interface in the memory unit (130).

[0406] The additional element (140) may be configured in various ways depending on the type of the wireless device. For example, the additional element (140) may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit. Although not limited thereto, the wireless device may be implemented in the form of a robot (Fig. 34, 100a), a vehicle (Fig. 34, 100b-1, 100b-2), an XR device (Fig. 34, 100c), a portable device (Fig. 34, 100d), a home appliance (Fig. 34, 100e), an IoT device (Fig. 34, 100f), a digital broadcasting terminal, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or a financial device), a security device, a climate / environmental device, an AI server / device (Fig. 34, 400), a base station (Fig. 34, 200), a network node, etc. Wireless devices may be mobile or stationary depending on the use / service.

[0407] In FIG. 26, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be entirely interconnected via a wired interface, or at least some may be wirelessly connected via a communication unit (110). For example, within the wireless device (100, 200), the control unit (120) and the communication unit (110) may be wired, and the control unit (120) and a first unit (e.g., 130, 140) may be wirelessly connected via the communication unit (110). In addition, each element, component, unit / part, and / or module within the wireless device (100, 200) may further include one or more elements. For example, the control unit (120) may be composed of one or more processor sets. For example, the control unit (120) may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing processor, a memory control processor, etc. As another example, the memory unit (130) may be composed of RAM (Random Access Memory), DRAM (Dynamic RAM), ROM (Read Only Memory), flash memory, volatile memory, non-volatile memory, and / or a combination thereof.

[0408] Examples of mobile devices applicable to this specification are provided. Mobile devices may include smartphones, smart pads, wearable devices (e.g., smartwatches, smartglasses), and portable computers (e.g., laptops). Mobile devices may be referred to as MS (Mobile Station), UT (User Terminal), MSS (Mobile Subscriber Station), SS (Subscriber Station), AMS (Advanced Mobile Station), or WT (Wireless Terminal).

[0409] Fig. 27 illustrates a communication system (1) applicable to this specification.

[0410] Referring to FIG. 27, a communication system (1) applied to the present specification includes a wireless device, a base station, and a network. Here, the wireless device refers to a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Things) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone). XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices, and can be implemented in the form of HMD (Head-Mounted Device), HUD (Head-Up Display) installed in a vehicle, television, smartphone, computer, wearable device, home appliance, digital signage, vehicle, robot, etc. Mobile devices can include smartphone, smart pad, wearable device (e.g., smart watch, smart glass), computer (e.g., laptop, etc.), etc. Home appliances can include TV, refrigerator, washing machine, etc. IoT devices can include sensors, smart meters, etc. For example, base stations and networks can also be implemented as wireless devices, and a specific wireless device (200a) can act as a base station / network node to other wireless devices.

[0411] Wireless devices (100a to 100f) can be connected to a network (300) via a base station (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, etc. The wireless devices (100a to 100f) can communicate with each other via the base station (200) / network (300), but can also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to Everything) communication). In addition, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0412] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base stations (200), and base stations (200) / base stations (200). Here, wireless communication / connection can be achieved through various wireless access technologies (e.g., 5G NR) such as uplink / downlink communication (150a), sidelink communication (150b) (or, D2D communication), and communication between base stations (150c) (e.g., relay, IAB (Integrated Access Backhaul). Through wireless communication / connection (150a, 150b, 150c), wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals to each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, at least some of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and resource allocation processes can be performed based on various proposals of the present specification.

[0413] Meanwhile, NR supports multiple numerologies (or subcarrier spacing (SCS)) to support various 5G services. For example, an SCS of 15 kHz supports a wide area in traditional cellular bands; an SCS of 30 kHz / 60 kHz supports dense urban areas, lower latency, and wider carrier bandwidth; and an SCS of 60 kHz or higher supports a bandwidth greater than 24.25 GHz to overcome phase noise.

[0414] The NR frequency band can be defined by two types of frequency ranges (FR1, FR2). The numerical values ​​of the frequency ranges can be changed, and for example, the frequency ranges of the two types (FR1, FR2) can be as shown in Table 5 below. For convenience of explanation, among the frequency ranges used in the NR system, FR1 can mean the “sub 6 GHz range”, and FR2 can mean the “above 6 GHz range” and can be called millimeter wave (mmW).

[0415] [Table 5]

[0416]

[0417] As described above, the numerical value of the frequency range of the NR system can be changed. For example, FR1 may include a band from 410 MHz to 7125 MHz, as shown in Table 6 below. That is, FR1 may include a frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.). For example, the frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.) included within FR1 may include an unlicensed band. The unlicensed band may be used for various purposes, such as for vehicular communications (e.g., autonomous driving).

[0418] [Table 6]

[0419]

[0420] The claims set forth in this specification may be combined in various ways. For example, the technical features of the method claims of this specification may be combined and implemented as a device, and the technical features of the device claims of this specification may be combined and implemented as a method. Furthermore, the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a device, and the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a method.

Claims

1. In the method, The terminal receives motion information related to the motion applied to the time resource, and The above terminal performs the above operation in the above time resource, A method characterized in that the above operation is determined based on the operation information among HD (half duplex) operation, SBFD (subband full duplex) operation, and SSFD (shared spectrum full duplex) operation.

2. A method according to claim 1, wherein the operation information indicates one of subband, wideband, and Not available (NA) for each of downlink reception and uplink transmission of the terminal.

3. In the second paragraph, if the operation information informs the subband for the downlink reception, the terminal performs the operation of receiving the downlink signal only in the resources within the downlink subband in the time resource, A method characterized in that, when the above operation information informs the subband for the uplink transmission, the terminal performs the transmission operation of the uplink signal only in the resources within the uplink subband in the time resource.

4. In the second paragraph, if the operation information informs the wideband about the downlink reception, the terminal performs the operation of receiving the downlink signal in the entire frequency resource of the cell in the time resource, A method characterized in that when the above operation information informs the wideband about the uplink transmission, the terminal performs an operation of transmitting an uplink signal in the entire frequency resource of the cell in the time resource.

5. In the second paragraph, if the operation information indicates that the downlink reception is not available, the terminal does not perform the reception operation of the downlink signal in the entire frequency resources of the cell in the time resource, A method characterized in that, if the above operation information indicates that the uplink transmission is not available, the terminal does not perform an operation of transmitting an uplink signal in the entire frequency resources of the cell in the time resource.

6. In the second paragraph, if the operation information informs the wideband about the downlink reception, the terminal performs the operation of receiving the downlink signal in the entire frequency resource of the cell in the time resource, A method characterized in that, when the above operation information informs the subband for the uplink transmission, the terminal performs the transmission operation of the uplink signal only in the resources within the uplink subband in the time resource.

7. In the second paragraph, if the operation information informs the subband for the downlink reception, the terminal performs the operation of receiving the downlink signal only in the resources within the downlink subband in the time resource, A method characterized in that when the above operation information informs the wideband about the uplink transmission, the terminal performs an operation of transmitting an uplink signal in the entire frequency resource of the cell in the time resource.

8. A method according to claim 1, wherein the operation information includes first operation information indicating whether the cell operates in half duplex (HD) or full duplex (FD) and second operation information indicating whether the cell operates in SBFD or SSFD in a time resource in which the cell operates in FD.

9. In the 8th paragraph, if the first operation information indicates that the cell operates in the full duplex mode and the second operation information indicates that the cell operates in the SBFD mode, A method characterized in that, in the above time resources, the terminal performs a reception operation of a downlink signal only in resources within a downlink subband, and performs a transmission operation of an uplink signal only in resources within an uplink subband.

10. In the 8th paragraph, if the first operation information indicates that the cell operates in the full duplex mode and the second operation information indicates that the cell operates in the SSFD mode, A method characterized in that, in the above time resources, the terminal performs a reception operation of a downlink signal in the entire frequency resources of the cell, and performs a transmission operation of an uplink signal in the entire frequency resources of the cell.

11. The terminal is, At least one transceiver; At least one memory; and At least one processor operably coupled with said at least one memory and said at least one transceiver, The at least one memory comprises instructions executed by the at least one processor, and the at least one processor, Receives action information related to actions applied to time resources, and Perform the above action in the above time resource, A terminal characterized in that the above operation is determined based on the operation information among HD (half duplex) operation, SBFD (subband full duplex) operation, and SSFD (shared spectrum full duplex) operation.

12. A terminal according to claim 11, wherein the operation information indicates one of subband, wideband, and Not available (NA) for each of downlink reception and uplink transmission of the terminal.

13. In the 12th paragraph, if the operation information informs the subband for the downlink reception, the terminal performs the operation of receiving the downlink signal only in the resources within the downlink subband in the time resource, A terminal characterized in that, when the above operation information informs the subband for the uplink transmission, the terminal performs the transmission operation of the uplink signal only in the resources within the uplink subband in the time resource.

14. In the 12th paragraph, if the operation information informs the wideband about the downlink reception, the terminal performs the operation of receiving the downlink signal in the entire frequency resource of the cell in the time resource, A terminal characterized in that, when the above operation information informs the wideband about the uplink transmission, the terminal performs an operation of transmitting an uplink signal in the entire frequency resource of the cell in the time resource.

15. In the 12th paragraph, if the operation information indicates that the downlink reception is not available, the terminal does not perform the operation of receiving a downlink signal in the entire frequency resources of the cell in the time resource, A terminal characterized in that, if the above operation information indicates that the uplink transmission is not available, the terminal does not perform an uplink signal transmission operation in the entire frequency resources of the cell in the time resource.

16. In the 12th paragraph, if the operation information informs the wideband about the downlink reception, the terminal performs the operation of receiving the downlink signal in the entire frequency resource of the cell in the time resource, A terminal characterized in that, when the above operation information informs the subband for the uplink transmission, the terminal performs the transmission operation of the uplink signal only in the resources within the uplink subband in the time resource.

17. In the 12th paragraph, if the operation information informs the subband for the downlink reception, the terminal performs the operation of receiving the downlink signal only in the resources within the downlink subband in the time resource, A terminal characterized in that, when the above operation information informs the wideband about the uplink transmission, the terminal performs an operation of transmitting an uplink signal in the entire frequency resource of the cell in the time resource.

18. A terminal characterized in that, in paragraph 11, the operation information includes first operation information indicating whether the cell operates in half duplex (HD) or full duplex (FD) and second operation information indicating whether the cell operates in SBFD or SSFD in a time resource in which the cell operates in FD.

19. In the 18th paragraph, if the first operation information indicates that the cell operates in the full duplex mode and the second operation information indicates that the cell operates in the SBFD mode, A terminal characterized in that, in the above time resources, the terminal performs a reception operation of a downlink signal only in resources within a downlink subband, and performs a transmission operation of an uplink signal only in resources within an uplink subband.

20. In the 18th paragraph, if the first operation information indicates that the cell operates in the full duplex mode and the second operation information indicates that the cell operates in the SSFD mode, A terminal characterized in that, in the above time resources, the terminal performs a reception operation of a downlink signal in the entire frequency resources of the cell, and performs a transmission operation of an uplink signal in the entire frequency resources of the cell.

21. The device, At least one memory; and At least one processor operably coupled to at least one memory, The at least one memory comprises instructions executed by the at least one processor, and the at least one processor, Receives action information related to actions applied to time resources, and Perform the above action in the above time resource, A device characterized in that the above operation is determined based on the operation information among HD (half duplex) operation, SBFD (subband full duplex) operation, and SSFD (shared spectrum full duplex) operation.

22. At least one computer readable medium (CRM) containing instructions based on being executed by at least one processor, Receives action information related to actions applied to time resources, and Perform the above action in the above time resource, CRM characterized in that the above operation is determined based on the operation information among HD (half duplex) operation, SBFD (subband full duplex) operation, and SSFD (shared spectrum full duplex) operation.

23. In the method, The base station transmits to the terminal motion information related to the motion applied to the time resource, and The above base station communicates with the terminal according to the above operation in the above time resource, A method characterized in that the above operation is determined based on the operation information among HD (half duplex) operation, SBFD (subband full duplex) operation, and SSFD (shared spectrum full duplex) operation.

24. The base station, At least one transceiver; At least one memory; and At least one processor operably coupled with said at least one memory and said at least one transceiver, wherein said at least one memory contains instructions executed by said at least one processor, At least one processor, Transmits motion information related to motions applied to time resources to the terminal, and Communicate with the terminal according to the above operation in the above time resource, The above operation is characterized in that the base station is determined based on the operation information among HD (half duplex) operation, SBFD (subband full duplex) operation, and SSFD (shared spectrum full duplex) operation.

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